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Commit | Line | Data |
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31e31b8a | 1 | /* |
66fb9763 | 2 | * Emulation of Linux signals |
5fafdf24 | 3 | * |
31e31b8a FB |
4 | * Copyright (c) 2003 Fabrice Bellard |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
8167ee88 | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
31e31b8a | 18 | */ |
d39594e9 | 19 | #include "qemu/osdep.h" |
31e31b8a | 20 | #include <sys/ucontext.h> |
edf8e2af | 21 | #include <sys/resource.h> |
31e31b8a | 22 | |
3ef693a0 | 23 | #include "qemu.h" |
7d99a001 | 24 | #include "qemu-common.h" |
992f48a0 | 25 | #include "target_signal.h" |
c8ee0a44 | 26 | #include "trace.h" |
66fb9763 | 27 | |
249c4c32 | 28 | static struct target_sigaltstack target_sigaltstack_used = { |
a04e134a TS |
29 | .ss_sp = 0, |
30 | .ss_size = 0, | |
31 | .ss_flags = TARGET_SS_DISABLE, | |
32 | }; | |
33 | ||
624f7979 | 34 | static struct target_sigaction sigact_table[TARGET_NSIG]; |
31e31b8a | 35 | |
5fafdf24 | 36 | static void host_signal_handler(int host_signum, siginfo_t *info, |
66fb9763 FB |
37 | void *puc); |
38 | ||
3ca05588 | 39 | static uint8_t host_to_target_signal_table[_NSIG] = { |
9e5f5284 FB |
40 | [SIGHUP] = TARGET_SIGHUP, |
41 | [SIGINT] = TARGET_SIGINT, | |
42 | [SIGQUIT] = TARGET_SIGQUIT, | |
43 | [SIGILL] = TARGET_SIGILL, | |
44 | [SIGTRAP] = TARGET_SIGTRAP, | |
45 | [SIGABRT] = TARGET_SIGABRT, | |
01e3b763 | 46 | /* [SIGIOT] = TARGET_SIGIOT,*/ |
9e5f5284 FB |
47 | [SIGBUS] = TARGET_SIGBUS, |
48 | [SIGFPE] = TARGET_SIGFPE, | |
49 | [SIGKILL] = TARGET_SIGKILL, | |
50 | [SIGUSR1] = TARGET_SIGUSR1, | |
51 | [SIGSEGV] = TARGET_SIGSEGV, | |
52 | [SIGUSR2] = TARGET_SIGUSR2, | |
53 | [SIGPIPE] = TARGET_SIGPIPE, | |
54 | [SIGALRM] = TARGET_SIGALRM, | |
55 | [SIGTERM] = TARGET_SIGTERM, | |
56 | #ifdef SIGSTKFLT | |
57 | [SIGSTKFLT] = TARGET_SIGSTKFLT, | |
58 | #endif | |
59 | [SIGCHLD] = TARGET_SIGCHLD, | |
60 | [SIGCONT] = TARGET_SIGCONT, | |
61 | [SIGSTOP] = TARGET_SIGSTOP, | |
62 | [SIGTSTP] = TARGET_SIGTSTP, | |
63 | [SIGTTIN] = TARGET_SIGTTIN, | |
64 | [SIGTTOU] = TARGET_SIGTTOU, | |
65 | [SIGURG] = TARGET_SIGURG, | |
66 | [SIGXCPU] = TARGET_SIGXCPU, | |
67 | [SIGXFSZ] = TARGET_SIGXFSZ, | |
68 | [SIGVTALRM] = TARGET_SIGVTALRM, | |
69 | [SIGPROF] = TARGET_SIGPROF, | |
70 | [SIGWINCH] = TARGET_SIGWINCH, | |
71 | [SIGIO] = TARGET_SIGIO, | |
72 | [SIGPWR] = TARGET_SIGPWR, | |
73 | [SIGSYS] = TARGET_SIGSYS, | |
74 | /* next signals stay the same */ | |
624f7979 | 75 | /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with |
b4916d7b | 76 | host libpthread signals. This assumes no one actually uses SIGRTMAX :-/ |
624f7979 PB |
77 | To fix this properly we need to do manual signal delivery multiplexed |
78 | over a single host signal. */ | |
79 | [__SIGRTMIN] = __SIGRTMAX, | |
80 | [__SIGRTMAX] = __SIGRTMIN, | |
9e5f5284 | 81 | }; |
3ca05588 | 82 | static uint8_t target_to_host_signal_table[_NSIG]; |
9e5f5284 | 83 | |
a04e134a TS |
84 | static inline int on_sig_stack(unsigned long sp) |
85 | { | |
86 | return (sp - target_sigaltstack_used.ss_sp | |
87 | < target_sigaltstack_used.ss_size); | |
88 | } | |
89 | ||
90 | static inline int sas_ss_flags(unsigned long sp) | |
91 | { | |
92 | return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE | |
93 | : on_sig_stack(sp) ? SS_ONSTACK : 0); | |
94 | } | |
95 | ||
1d9d8b55 | 96 | int host_to_target_signal(int sig) |
31e31b8a | 97 | { |
167c50d8 | 98 | if (sig < 0 || sig >= _NSIG) |
4cb05961 | 99 | return sig; |
9e5f5284 | 100 | return host_to_target_signal_table[sig]; |
31e31b8a FB |
101 | } |
102 | ||
4cb05961 | 103 | int target_to_host_signal(int sig) |
31e31b8a | 104 | { |
167c50d8 | 105 | if (sig < 0 || sig >= _NSIG) |
4cb05961 | 106 | return sig; |
9e5f5284 | 107 | return target_to_host_signal_table[sig]; |
31e31b8a FB |
108 | } |
109 | ||
c227f099 | 110 | static inline void target_sigemptyset(target_sigset_t *set) |
f5545b5c PB |
111 | { |
112 | memset(set, 0, sizeof(*set)); | |
113 | } | |
114 | ||
c227f099 | 115 | static inline void target_sigaddset(target_sigset_t *set, int signum) |
f5545b5c PB |
116 | { |
117 | signum--; | |
118 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
119 | set->sig[signum / TARGET_NSIG_BPW] |= mask; | |
120 | } | |
121 | ||
c227f099 | 122 | static inline int target_sigismember(const target_sigset_t *set, int signum) |
f5545b5c PB |
123 | { |
124 | signum--; | |
125 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
126 | return ((set->sig[signum / TARGET_NSIG_BPW] & mask) != 0); | |
127 | } | |
128 | ||
c227f099 | 129 | static void host_to_target_sigset_internal(target_sigset_t *d, |
9231944d | 130 | const sigset_t *s) |
66fb9763 FB |
131 | { |
132 | int i; | |
f5545b5c PB |
133 | target_sigemptyset(d); |
134 | for (i = 1; i <= TARGET_NSIG; i++) { | |
135 | if (sigismember(s, i)) { | |
136 | target_sigaddset(d, host_to_target_signal(i)); | |
137 | } | |
66fb9763 FB |
138 | } |
139 | } | |
140 | ||
c227f099 | 141 | void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) |
9231944d | 142 | { |
c227f099 | 143 | target_sigset_t d1; |
9231944d FB |
144 | int i; |
145 | ||
146 | host_to_target_sigset_internal(&d1, s); | |
147 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
cbb21eed | 148 | d->sig[i] = tswapal(d1.sig[i]); |
9231944d FB |
149 | } |
150 | ||
8fcd3692 | 151 | static void target_to_host_sigset_internal(sigset_t *d, |
c227f099 | 152 | const target_sigset_t *s) |
66fb9763 FB |
153 | { |
154 | int i; | |
f5545b5c PB |
155 | sigemptyset(d); |
156 | for (i = 1; i <= TARGET_NSIG; i++) { | |
157 | if (target_sigismember(s, i)) { | |
158 | sigaddset(d, target_to_host_signal(i)); | |
159 | } | |
160 | } | |
66fb9763 FB |
161 | } |
162 | ||
c227f099 | 163 | void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) |
9231944d | 164 | { |
c227f099 | 165 | target_sigset_t s1; |
9231944d FB |
166 | int i; |
167 | ||
168 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
cbb21eed | 169 | s1.sig[i] = tswapal(s->sig[i]); |
9231944d FB |
170 | target_to_host_sigset_internal(d, &s1); |
171 | } | |
3b46e624 | 172 | |
992f48a0 | 173 | void host_to_target_old_sigset(abi_ulong *old_sigset, |
66fb9763 FB |
174 | const sigset_t *sigset) |
175 | { | |
c227f099 | 176 | target_sigset_t d; |
9e5f5284 FB |
177 | host_to_target_sigset(&d, sigset); |
178 | *old_sigset = d.sig[0]; | |
66fb9763 FB |
179 | } |
180 | ||
5fafdf24 | 181 | void target_to_host_old_sigset(sigset_t *sigset, |
992f48a0 | 182 | const abi_ulong *old_sigset) |
66fb9763 | 183 | { |
c227f099 | 184 | target_sigset_t d; |
9e5f5284 FB |
185 | int i; |
186 | ||
187 | d.sig[0] = *old_sigset; | |
188 | for(i = 1;i < TARGET_NSIG_WORDS; i++) | |
189 | d.sig[i] = 0; | |
190 | target_to_host_sigset(sigset, &d); | |
66fb9763 FB |
191 | } |
192 | ||
1c275925 AB |
193 | /* Wrapper for sigprocmask function |
194 | * Emulates a sigprocmask in a safe way for the guest. Note that set and oldset | |
195 | * are host signal set, not guest ones. This wraps the sigprocmask host calls | |
196 | * that should be protected (calls originated from guest) | |
197 | */ | |
198 | int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset) | |
199 | { | |
a7ec0f98 PM |
200 | int ret; |
201 | sigset_t val; | |
202 | sigset_t *temp = NULL; | |
203 | CPUState *cpu = thread_cpu; | |
204 | TaskState *ts = (TaskState *)cpu->opaque; | |
205 | bool segv_was_blocked = ts->sigsegv_blocked; | |
206 | ||
207 | if (set) { | |
208 | bool has_sigsegv = sigismember(set, SIGSEGV); | |
209 | val = *set; | |
210 | temp = &val; | |
211 | ||
212 | sigdelset(temp, SIGSEGV); | |
213 | ||
214 | switch (how) { | |
215 | case SIG_BLOCK: | |
216 | if (has_sigsegv) { | |
217 | ts->sigsegv_blocked = true; | |
218 | } | |
219 | break; | |
220 | case SIG_UNBLOCK: | |
221 | if (has_sigsegv) { | |
222 | ts->sigsegv_blocked = false; | |
223 | } | |
224 | break; | |
225 | case SIG_SETMASK: | |
226 | ts->sigsegv_blocked = has_sigsegv; | |
227 | break; | |
228 | default: | |
229 | g_assert_not_reached(); | |
230 | } | |
231 | } | |
232 | ||
233 | ret = sigprocmask(how, temp, oldset); | |
234 | ||
235 | if (oldset && segv_was_blocked) { | |
236 | sigaddset(oldset, SIGSEGV); | |
237 | } | |
238 | ||
239 | return ret; | |
1c275925 AB |
240 | } |
241 | ||
9de5e440 FB |
242 | /* siginfo conversion */ |
243 | ||
c227f099 | 244 | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
9de5e440 | 245 | const siginfo_t *info) |
66fb9763 | 246 | { |
a05c6409 | 247 | int sig = host_to_target_signal(info->si_signo); |
9de5e440 FB |
248 | tinfo->si_signo = sig; |
249 | tinfo->si_errno = 0; | |
afd7cd92 | 250 | tinfo->si_code = info->si_code; |
a05c6409 RH |
251 | |
252 | if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV | |
253 | || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) { | |
254 | /* Should never come here, but who knows. The information for | |
255 | the target is irrelevant. */ | |
9de5e440 | 256 | tinfo->_sifields._sigfault._addr = 0; |
a05c6409 RH |
257 | } else if (sig == TARGET_SIGIO) { |
258 | tinfo->_sifields._sigpoll._band = info->si_band; | |
7f7f7c84 | 259 | tinfo->_sifields._sigpoll._fd = info->si_fd; |
a05c6409 RH |
260 | } else if (sig == TARGET_SIGCHLD) { |
261 | tinfo->_sifields._sigchld._pid = info->si_pid; | |
262 | tinfo->_sifields._sigchld._uid = info->si_uid; | |
263 | tinfo->_sifields._sigchld._status | |
264 | = host_to_target_waitstatus(info->si_status); | |
265 | tinfo->_sifields._sigchld._utime = info->si_utime; | |
266 | tinfo->_sifields._sigchld._stime = info->si_stime; | |
9de5e440 FB |
267 | } else if (sig >= TARGET_SIGRTMIN) { |
268 | tinfo->_sifields._rt._pid = info->si_pid; | |
269 | tinfo->_sifields._rt._uid = info->si_uid; | |
270 | /* XXX: potential problem if 64 bit */ | |
a05c6409 RH |
271 | tinfo->_sifields._rt._sigval.sival_ptr |
272 | = (abi_ulong)(unsigned long)info->si_value.sival_ptr; | |
9de5e440 FB |
273 | } |
274 | } | |
275 | ||
c227f099 AL |
276 | static void tswap_siginfo(target_siginfo_t *tinfo, |
277 | const target_siginfo_t *info) | |
9de5e440 | 278 | { |
a05c6409 | 279 | int sig = info->si_signo; |
9de5e440 | 280 | tinfo->si_signo = tswap32(sig); |
66fb9763 FB |
281 | tinfo->si_errno = tswap32(info->si_errno); |
282 | tinfo->si_code = tswap32(info->si_code); | |
a05c6409 RH |
283 | |
284 | if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV | |
285 | || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) { | |
286 | tinfo->_sifields._sigfault._addr | |
287 | = tswapal(info->_sifields._sigfault._addr); | |
288 | } else if (sig == TARGET_SIGIO) { | |
289 | tinfo->_sifields._sigpoll._band | |
290 | = tswap32(info->_sifields._sigpoll._band); | |
291 | tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd); | |
292 | } else if (sig == TARGET_SIGCHLD) { | |
293 | tinfo->_sifields._sigchld._pid | |
294 | = tswap32(info->_sifields._sigchld._pid); | |
295 | tinfo->_sifields._sigchld._uid | |
296 | = tswap32(info->_sifields._sigchld._uid); | |
297 | tinfo->_sifields._sigchld._status | |
298 | = tswap32(info->_sifields._sigchld._status); | |
299 | tinfo->_sifields._sigchld._utime | |
300 | = tswapal(info->_sifields._sigchld._utime); | |
301 | tinfo->_sifields._sigchld._stime | |
302 | = tswapal(info->_sifields._sigchld._stime); | |
9de5e440 FB |
303 | } else if (sig >= TARGET_SIGRTMIN) { |
304 | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); | |
305 | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); | |
a05c6409 RH |
306 | tinfo->_sifields._rt._sigval.sival_ptr |
307 | = tswapal(info->_sifields._rt._sigval.sival_ptr); | |
9de5e440 FB |
308 | } |
309 | } | |
310 | ||
311 | ||
c227f099 | 312 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) |
9de5e440 FB |
313 | { |
314 | host_to_target_siginfo_noswap(tinfo, info); | |
315 | tswap_siginfo(tinfo, tinfo); | |
66fb9763 FB |
316 | } |
317 | ||
9de5e440 | 318 | /* XXX: we support only POSIX RT signals are used. */ |
aa1f17c1 | 319 | /* XXX: find a solution for 64 bit (additional malloced data is needed) */ |
c227f099 | 320 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
66fb9763 FB |
321 | { |
322 | info->si_signo = tswap32(tinfo->si_signo); | |
323 | info->si_errno = tswap32(tinfo->si_errno); | |
324 | info->si_code = tswap32(tinfo->si_code); | |
9de5e440 FB |
325 | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
326 | info->si_uid = tswap32(tinfo->_sifields._rt._uid); | |
5fafdf24 | 327 | info->si_value.sival_ptr = |
cbb21eed | 328 | (void *)(long)tswapal(tinfo->_sifields._rt._sigval.sival_ptr); |
66fb9763 FB |
329 | } |
330 | ||
ca587a8e AJ |
331 | static int fatal_signal (int sig) |
332 | { | |
333 | switch (sig) { | |
334 | case TARGET_SIGCHLD: | |
335 | case TARGET_SIGURG: | |
336 | case TARGET_SIGWINCH: | |
337 | /* Ignored by default. */ | |
338 | return 0; | |
339 | case TARGET_SIGCONT: | |
340 | case TARGET_SIGSTOP: | |
341 | case TARGET_SIGTSTP: | |
342 | case TARGET_SIGTTIN: | |
343 | case TARGET_SIGTTOU: | |
344 | /* Job control signals. */ | |
345 | return 0; | |
346 | default: | |
347 | return 1; | |
348 | } | |
349 | } | |
350 | ||
edf8e2af MW |
351 | /* returns 1 if given signal should dump core if not handled */ |
352 | static int core_dump_signal(int sig) | |
353 | { | |
354 | switch (sig) { | |
355 | case TARGET_SIGABRT: | |
356 | case TARGET_SIGFPE: | |
357 | case TARGET_SIGILL: | |
358 | case TARGET_SIGQUIT: | |
359 | case TARGET_SIGSEGV: | |
360 | case TARGET_SIGTRAP: | |
361 | case TARGET_SIGBUS: | |
362 | return (1); | |
363 | default: | |
364 | return (0); | |
365 | } | |
366 | } | |
367 | ||
31e31b8a FB |
368 | void signal_init(void) |
369 | { | |
370 | struct sigaction act; | |
624f7979 | 371 | struct sigaction oact; |
9e5f5284 | 372 | int i, j; |
624f7979 | 373 | int host_sig; |
31e31b8a | 374 | |
9e5f5284 | 375 | /* generate signal conversion tables */ |
3ca05588 | 376 | for(i = 1; i < _NSIG; i++) { |
9e5f5284 FB |
377 | if (host_to_target_signal_table[i] == 0) |
378 | host_to_target_signal_table[i] = i; | |
379 | } | |
3ca05588 | 380 | for(i = 1; i < _NSIG; i++) { |
9e5f5284 FB |
381 | j = host_to_target_signal_table[i]; |
382 | target_to_host_signal_table[j] = i; | |
383 | } | |
3b46e624 | 384 | |
9de5e440 FB |
385 | /* set all host signal handlers. ALL signals are blocked during |
386 | the handlers to serialize them. */ | |
624f7979 PB |
387 | memset(sigact_table, 0, sizeof(sigact_table)); |
388 | ||
9de5e440 | 389 | sigfillset(&act.sa_mask); |
31e31b8a FB |
390 | act.sa_flags = SA_SIGINFO; |
391 | act.sa_sigaction = host_signal_handler; | |
624f7979 PB |
392 | for(i = 1; i <= TARGET_NSIG; i++) { |
393 | host_sig = target_to_host_signal(i); | |
394 | sigaction(host_sig, NULL, &oact); | |
395 | if (oact.sa_sigaction == (void *)SIG_IGN) { | |
396 | sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN; | |
397 | } else if (oact.sa_sigaction == (void *)SIG_DFL) { | |
398 | sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL; | |
399 | } | |
400 | /* If there's already a handler installed then something has | |
401 | gone horribly wrong, so don't even try to handle that case. */ | |
ca587a8e AJ |
402 | /* Install some handlers for our own use. We need at least |
403 | SIGSEGV and SIGBUS, to detect exceptions. We can not just | |
404 | trap all signals because it affects syscall interrupt | |
405 | behavior. But do trap all default-fatal signals. */ | |
406 | if (fatal_signal (i)) | |
624f7979 | 407 | sigaction(host_sig, &act, NULL); |
31e31b8a | 408 | } |
66fb9763 FB |
409 | } |
410 | ||
411 | /* signal queue handling */ | |
412 | ||
9349b4f9 | 413 | static inline struct sigqueue *alloc_sigqueue(CPUArchState *env) |
66fb9763 | 414 | { |
0429a971 AF |
415 | CPUState *cpu = ENV_GET_CPU(env); |
416 | TaskState *ts = cpu->opaque; | |
624f7979 | 417 | struct sigqueue *q = ts->first_free; |
66fb9763 FB |
418 | if (!q) |
419 | return NULL; | |
624f7979 | 420 | ts->first_free = q->next; |
66fb9763 | 421 | return q; |
31e31b8a FB |
422 | } |
423 | ||
9349b4f9 | 424 | static inline void free_sigqueue(CPUArchState *env, struct sigqueue *q) |
66fb9763 | 425 | { |
0429a971 AF |
426 | CPUState *cpu = ENV_GET_CPU(env); |
427 | TaskState *ts = cpu->opaque; | |
428 | ||
624f7979 PB |
429 | q->next = ts->first_free; |
430 | ts->first_free = q; | |
66fb9763 FB |
431 | } |
432 | ||
9de5e440 | 433 | /* abort execution with signal */ |
66393fb9 | 434 | static void QEMU_NORETURN force_sig(int target_sig) |
66fb9763 | 435 | { |
0429a971 AF |
436 | CPUState *cpu = thread_cpu; |
437 | CPUArchState *env = cpu->env_ptr; | |
438 | TaskState *ts = (TaskState *)cpu->opaque; | |
edf8e2af | 439 | int host_sig, core_dumped = 0; |
603e4fd7 | 440 | struct sigaction act; |
c8ee0a44 | 441 | |
66393fb9 | 442 | host_sig = target_to_host_signal(target_sig); |
c8ee0a44 | 443 | trace_user_force_sig(env, target_sig, host_sig); |
a2247f8e | 444 | gdb_signalled(env, target_sig); |
603e4fd7 | 445 | |
edf8e2af | 446 | /* dump core if supported by target binary format */ |
66393fb9 | 447 | if (core_dump_signal(target_sig) && (ts->bprm->core_dump != NULL)) { |
edf8e2af MW |
448 | stop_all_tasks(); |
449 | core_dumped = | |
a2247f8e | 450 | ((*ts->bprm->core_dump)(target_sig, env) == 0); |
edf8e2af MW |
451 | } |
452 | if (core_dumped) { | |
453 | /* we already dumped the core of target process, we don't want | |
454 | * a coredump of qemu itself */ | |
455 | struct rlimit nodump; | |
456 | getrlimit(RLIMIT_CORE, &nodump); | |
457 | nodump.rlim_cur=0; | |
458 | setrlimit(RLIMIT_CORE, &nodump); | |
459 | (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n", | |
66393fb9 | 460 | target_sig, strsignal(host_sig), "core dumped" ); |
edf8e2af MW |
461 | } |
462 | ||
0c58751c | 463 | /* The proper exit code for dying from an uncaught signal is |
603e4fd7 AJ |
464 | * -<signal>. The kernel doesn't allow exit() or _exit() to pass |
465 | * a negative value. To get the proper exit code we need to | |
466 | * actually die from an uncaught signal. Here the default signal | |
467 | * handler is installed, we send ourself a signal and we wait for | |
468 | * it to arrive. */ | |
469 | sigfillset(&act.sa_mask); | |
470 | act.sa_handler = SIG_DFL; | |
3a5d30bf | 471 | act.sa_flags = 0; |
603e4fd7 AJ |
472 | sigaction(host_sig, &act, NULL); |
473 | ||
474 | /* For some reason raise(host_sig) doesn't send the signal when | |
475 | * statically linked on x86-64. */ | |
476 | kill(getpid(), host_sig); | |
477 | ||
478 | /* Make sure the signal isn't masked (just reuse the mask inside | |
479 | of act) */ | |
480 | sigdelset(&act.sa_mask, host_sig); | |
481 | sigsuspend(&act.sa_mask); | |
482 | ||
483 | /* unreachable */ | |
a6c6f76c | 484 | abort(); |
66fb9763 FB |
485 | } |
486 | ||
9de5e440 FB |
487 | /* queue a signal so that it will be send to the virtual CPU as soon |
488 | as possible */ | |
9349b4f9 | 489 | int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info) |
31e31b8a | 490 | { |
0429a971 AF |
491 | CPUState *cpu = ENV_GET_CPU(env); |
492 | TaskState *ts = cpu->opaque; | |
624f7979 | 493 | struct emulated_sigtable *k; |
9de5e440 | 494 | struct sigqueue *q, **pq; |
992f48a0 | 495 | abi_ulong handler; |
ca587a8e | 496 | int queue; |
66fb9763 | 497 | |
c8ee0a44 | 498 | trace_user_queue_signal(env, sig); |
624f7979 | 499 | k = &ts->sigtab[sig - 1]; |
ca587a8e | 500 | queue = gdb_queuesig (); |
624f7979 | 501 | handler = sigact_table[sig - 1]._sa_handler; |
a7ec0f98 PM |
502 | |
503 | if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) { | |
504 | /* Guest has blocked SIGSEGV but we got one anyway. Assume this | |
505 | * is a forced SIGSEGV (ie one the kernel handles via force_sig_info | |
506 | * because it got a real MMU fault). A blocked SIGSEGV in that | |
507 | * situation is treated as if using the default handler. This is | |
508 | * not correct if some other process has randomly sent us a SIGSEGV | |
509 | * via kill(), but that is not easy to distinguish at this point, | |
510 | * so we assume it doesn't happen. | |
511 | */ | |
512 | handler = TARGET_SIG_DFL; | |
513 | } | |
514 | ||
ca587a8e | 515 | if (!queue && handler == TARGET_SIG_DFL) { |
60b19691 TS |
516 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { |
517 | kill(getpid(),SIGSTOP); | |
518 | return 0; | |
519 | } else | |
66fb9763 | 520 | /* default handler : ignore some signal. The other are fatal */ |
5fafdf24 TS |
521 | if (sig != TARGET_SIGCHLD && |
522 | sig != TARGET_SIGURG && | |
60b19691 TS |
523 | sig != TARGET_SIGWINCH && |
524 | sig != TARGET_SIGCONT) { | |
66fb9763 | 525 | force_sig(sig); |
9de5e440 FB |
526 | } else { |
527 | return 0; /* indicate ignored */ | |
66fb9763 | 528 | } |
ca587a8e | 529 | } else if (!queue && handler == TARGET_SIG_IGN) { |
66fb9763 | 530 | /* ignore signal */ |
9de5e440 | 531 | return 0; |
ca587a8e | 532 | } else if (!queue && handler == TARGET_SIG_ERR) { |
66fb9763 FB |
533 | force_sig(sig); |
534 | } else { | |
9de5e440 FB |
535 | pq = &k->first; |
536 | if (sig < TARGET_SIGRTMIN) { | |
537 | /* if non real time signal, we queue exactly one signal */ | |
538 | if (!k->pending) | |
539 | q = &k->info; | |
540 | else | |
541 | return 0; | |
542 | } else { | |
543 | if (!k->pending) { | |
544 | /* first signal */ | |
545 | q = &k->info; | |
546 | } else { | |
624f7979 | 547 | q = alloc_sigqueue(env); |
9de5e440 FB |
548 | if (!q) |
549 | return -EAGAIN; | |
550 | while (*pq != NULL) | |
551 | pq = &(*pq)->next; | |
552 | } | |
553 | } | |
554 | *pq = q; | |
555 | q->info = *info; | |
556 | q->next = NULL; | |
557 | k->pending = 1; | |
558 | /* signal that a new signal is pending */ | |
624f7979 | 559 | ts->signal_pending = 1; |
9de5e440 FB |
560 | return 1; /* indicates that the signal was queued */ |
561 | } | |
562 | } | |
563 | ||
5fafdf24 | 564 | static void host_signal_handler(int host_signum, siginfo_t *info, |
9de5e440 FB |
565 | void *puc) |
566 | { | |
a2247f8e | 567 | CPUArchState *env = thread_cpu->env_ptr; |
9de5e440 | 568 | int sig; |
c227f099 | 569 | target_siginfo_t tinfo; |
9de5e440 FB |
570 | |
571 | /* the CPU emulator uses some host signals to detect exceptions, | |
eaa449b9 | 572 | we forward to it some signals */ |
ca587a8e | 573 | if ((host_signum == SIGSEGV || host_signum == SIGBUS) |
eaa449b9 | 574 | && info->si_code > 0) { |
b346ff46 | 575 | if (cpu_signal_handler(host_signum, info, puc)) |
9de5e440 FB |
576 | return; |
577 | } | |
578 | ||
579 | /* get target signal number */ | |
580 | sig = host_to_target_signal(host_signum); | |
581 | if (sig < 1 || sig > TARGET_NSIG) | |
582 | return; | |
c8ee0a44 | 583 | trace_user_host_signal(env, host_signum, sig); |
9de5e440 | 584 | host_to_target_siginfo_noswap(&tinfo, info); |
a2247f8e | 585 | if (queue_signal(env, sig, &tinfo) == 1) { |
9de5e440 | 586 | /* interrupt the virtual CPU as soon as possible */ |
a2247f8e | 587 | cpu_exit(thread_cpu); |
66fb9763 FB |
588 | } |
589 | } | |
590 | ||
0da46a6e | 591 | /* do_sigaltstack() returns target values and errnos. */ |
579a97f7 FB |
592 | /* compare linux/kernel/signal.c:do_sigaltstack() */ |
593 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) | |
a04e134a TS |
594 | { |
595 | int ret; | |
596 | struct target_sigaltstack oss; | |
597 | ||
598 | /* XXX: test errors */ | |
579a97f7 | 599 | if(uoss_addr) |
a04e134a TS |
600 | { |
601 | __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp); | |
602 | __put_user(target_sigaltstack_used.ss_size, &oss.ss_size); | |
603 | __put_user(sas_ss_flags(sp), &oss.ss_flags); | |
604 | } | |
605 | ||
579a97f7 | 606 | if(uss_addr) |
a04e134a | 607 | { |
579a97f7 FB |
608 | struct target_sigaltstack *uss; |
609 | struct target_sigaltstack ss; | |
0903c8be TM |
610 | size_t minstacksize = TARGET_MINSIGSTKSZ; |
611 | ||
612 | #if defined(TARGET_PPC64) | |
613 | /* ELF V2 for PPC64 has a 4K minimum stack size for signal handlers */ | |
614 | struct image_info *image = ((TaskState *)thread_cpu->opaque)->info; | |
615 | if (get_ppc64_abi(image) > 1) { | |
616 | minstacksize = 4096; | |
617 | } | |
618 | #endif | |
a04e134a | 619 | |
0da46a6e | 620 | ret = -TARGET_EFAULT; |
9eeb8306 | 621 | if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1)) { |
a04e134a | 622 | goto out; |
9eeb8306 RV |
623 | } |
624 | __get_user(ss.ss_sp, &uss->ss_sp); | |
625 | __get_user(ss.ss_size, &uss->ss_size); | |
626 | __get_user(ss.ss_flags, &uss->ss_flags); | |
579a97f7 | 627 | unlock_user_struct(uss, uss_addr, 0); |
a04e134a | 628 | |
0da46a6e | 629 | ret = -TARGET_EPERM; |
a04e134a TS |
630 | if (on_sig_stack(sp)) |
631 | goto out; | |
632 | ||
0da46a6e | 633 | ret = -TARGET_EINVAL; |
a04e134a TS |
634 | if (ss.ss_flags != TARGET_SS_DISABLE |
635 | && ss.ss_flags != TARGET_SS_ONSTACK | |
636 | && ss.ss_flags != 0) | |
637 | goto out; | |
638 | ||
639 | if (ss.ss_flags == TARGET_SS_DISABLE) { | |
640 | ss.ss_size = 0; | |
641 | ss.ss_sp = 0; | |
642 | } else { | |
0da46a6e | 643 | ret = -TARGET_ENOMEM; |
0903c8be | 644 | if (ss.ss_size < minstacksize) { |
a04e134a | 645 | goto out; |
0903c8be | 646 | } |
a04e134a TS |
647 | } |
648 | ||
649 | target_sigaltstack_used.ss_sp = ss.ss_sp; | |
650 | target_sigaltstack_used.ss_size = ss.ss_size; | |
651 | } | |
652 | ||
579a97f7 | 653 | if (uoss_addr) { |
0da46a6e | 654 | ret = -TARGET_EFAULT; |
579a97f7 | 655 | if (copy_to_user(uoss_addr, &oss, sizeof(oss))) |
a04e134a | 656 | goto out; |
a04e134a TS |
657 | } |
658 | ||
659 | ret = 0; | |
660 | out: | |
661 | return ret; | |
662 | } | |
663 | ||
0da46a6e | 664 | /* do_sigaction() return host values and errnos */ |
66fb9763 FB |
665 | int do_sigaction(int sig, const struct target_sigaction *act, |
666 | struct target_sigaction *oact) | |
667 | { | |
624f7979 | 668 | struct target_sigaction *k; |
773b93ee FB |
669 | struct sigaction act1; |
670 | int host_sig; | |
0da46a6e | 671 | int ret = 0; |
66fb9763 | 672 | |
2a913eb1 | 673 | if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP) |
66fb9763 FB |
674 | return -EINVAL; |
675 | k = &sigact_table[sig - 1]; | |
66fb9763 | 676 | if (oact) { |
d2565875 RH |
677 | __put_user(k->_sa_handler, &oact->_sa_handler); |
678 | __put_user(k->sa_flags, &oact->sa_flags); | |
388bb21a | 679 | #if !defined(TARGET_MIPS) |
d2565875 | 680 | __put_user(k->sa_restorer, &oact->sa_restorer); |
388bb21a | 681 | #endif |
d2565875 | 682 | /* Not swapped. */ |
624f7979 | 683 | oact->sa_mask = k->sa_mask; |
66fb9763 FB |
684 | } |
685 | if (act) { | |
624f7979 | 686 | /* FIXME: This is not threadsafe. */ |
d2565875 RH |
687 | __get_user(k->_sa_handler, &act->_sa_handler); |
688 | __get_user(k->sa_flags, &act->sa_flags); | |
388bb21a | 689 | #if !defined(TARGET_MIPS) |
d2565875 | 690 | __get_user(k->sa_restorer, &act->sa_restorer); |
388bb21a | 691 | #endif |
d2565875 | 692 | /* To be swapped in target_to_host_sigset. */ |
624f7979 | 693 | k->sa_mask = act->sa_mask; |
773b93ee FB |
694 | |
695 | /* we update the host linux signal state */ | |
696 | host_sig = target_to_host_signal(sig); | |
697 | if (host_sig != SIGSEGV && host_sig != SIGBUS) { | |
698 | sigfillset(&act1.sa_mask); | |
699 | act1.sa_flags = SA_SIGINFO; | |
624f7979 | 700 | if (k->sa_flags & TARGET_SA_RESTART) |
773b93ee FB |
701 | act1.sa_flags |= SA_RESTART; |
702 | /* NOTE: it is important to update the host kernel signal | |
703 | ignore state to avoid getting unexpected interrupted | |
704 | syscalls */ | |
624f7979 | 705 | if (k->_sa_handler == TARGET_SIG_IGN) { |
773b93ee | 706 | act1.sa_sigaction = (void *)SIG_IGN; |
624f7979 | 707 | } else if (k->_sa_handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
708 | if (fatal_signal (sig)) |
709 | act1.sa_sigaction = host_signal_handler; | |
710 | else | |
711 | act1.sa_sigaction = (void *)SIG_DFL; | |
773b93ee FB |
712 | } else { |
713 | act1.sa_sigaction = host_signal_handler; | |
714 | } | |
0da46a6e | 715 | ret = sigaction(host_sig, &act1, NULL); |
773b93ee | 716 | } |
66fb9763 | 717 | } |
0da46a6e | 718 | return ret; |
66fb9763 FB |
719 | } |
720 | ||
459a4017 | 721 | #if defined(TARGET_I386) && TARGET_ABI_BITS == 32 |
66fb9763 FB |
722 | |
723 | /* from the Linux kernel */ | |
724 | ||
725 | struct target_fpreg { | |
726 | uint16_t significand[4]; | |
727 | uint16_t exponent; | |
728 | }; | |
729 | ||
730 | struct target_fpxreg { | |
731 | uint16_t significand[4]; | |
732 | uint16_t exponent; | |
733 | uint16_t padding[3]; | |
734 | }; | |
735 | ||
736 | struct target_xmmreg { | |
992f48a0 | 737 | abi_ulong element[4]; |
66fb9763 FB |
738 | }; |
739 | ||
740 | struct target_fpstate { | |
741 | /* Regular FPU environment */ | |
992f48a0 BS |
742 | abi_ulong cw; |
743 | abi_ulong sw; | |
744 | abi_ulong tag; | |
745 | abi_ulong ipoff; | |
746 | abi_ulong cssel; | |
747 | abi_ulong dataoff; | |
748 | abi_ulong datasel; | |
66fb9763 FB |
749 | struct target_fpreg _st[8]; |
750 | uint16_t status; | |
751 | uint16_t magic; /* 0xffff = regular FPU data only */ | |
752 | ||
753 | /* FXSR FPU environment */ | |
992f48a0 BS |
754 | abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
755 | abi_ulong mxcsr; | |
756 | abi_ulong reserved; | |
66fb9763 FB |
757 | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
758 | struct target_xmmreg _xmm[8]; | |
992f48a0 | 759 | abi_ulong padding[56]; |
66fb9763 FB |
760 | }; |
761 | ||
762 | #define X86_FXSR_MAGIC 0x0000 | |
763 | ||
764 | struct target_sigcontext { | |
765 | uint16_t gs, __gsh; | |
766 | uint16_t fs, __fsh; | |
767 | uint16_t es, __esh; | |
768 | uint16_t ds, __dsh; | |
992f48a0 BS |
769 | abi_ulong edi; |
770 | abi_ulong esi; | |
771 | abi_ulong ebp; | |
772 | abi_ulong esp; | |
773 | abi_ulong ebx; | |
774 | abi_ulong edx; | |
775 | abi_ulong ecx; | |
776 | abi_ulong eax; | |
777 | abi_ulong trapno; | |
778 | abi_ulong err; | |
779 | abi_ulong eip; | |
66fb9763 | 780 | uint16_t cs, __csh; |
992f48a0 BS |
781 | abi_ulong eflags; |
782 | abi_ulong esp_at_signal; | |
66fb9763 | 783 | uint16_t ss, __ssh; |
992f48a0 BS |
784 | abi_ulong fpstate; /* pointer */ |
785 | abi_ulong oldmask; | |
786 | abi_ulong cr2; | |
66fb9763 FB |
787 | }; |
788 | ||
66fb9763 | 789 | struct target_ucontext { |
992f48a0 BS |
790 | abi_ulong tuc_flags; |
791 | abi_ulong tuc_link; | |
c227f099 | 792 | target_stack_t tuc_stack; |
b8076a74 | 793 | struct target_sigcontext tuc_mcontext; |
c227f099 | 794 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
66fb9763 FB |
795 | }; |
796 | ||
797 | struct sigframe | |
798 | { | |
992f48a0 | 799 | abi_ulong pretcode; |
66fb9763 FB |
800 | int sig; |
801 | struct target_sigcontext sc; | |
802 | struct target_fpstate fpstate; | |
992f48a0 | 803 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
66fb9763 FB |
804 | char retcode[8]; |
805 | }; | |
806 | ||
807 | struct rt_sigframe | |
808 | { | |
992f48a0 | 809 | abi_ulong pretcode; |
66fb9763 | 810 | int sig; |
992f48a0 BS |
811 | abi_ulong pinfo; |
812 | abi_ulong puc; | |
66fb9763 FB |
813 | struct target_siginfo info; |
814 | struct target_ucontext uc; | |
815 | struct target_fpstate fpstate; | |
816 | char retcode[8]; | |
817 | }; | |
818 | ||
819 | /* | |
820 | * Set up a signal frame. | |
821 | */ | |
822 | ||
66fb9763 | 823 | /* XXX: save x87 state */ |
41ecc72b RV |
824 | static void setup_sigcontext(struct target_sigcontext *sc, |
825 | struct target_fpstate *fpstate, CPUX86State *env, abi_ulong mask, | |
826 | abi_ulong fpstate_addr) | |
66fb9763 | 827 | { |
27103424 | 828 | CPUState *cs = CPU(x86_env_get_cpu(env)); |
27103424 | 829 | uint16_t magic; |
66fb9763 | 830 | |
579a97f7 | 831 | /* already locked in setup_frame() */ |
1d8b512b RV |
832 | __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
833 | __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); | |
834 | __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); | |
835 | __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); | |
836 | __put_user(env->regs[R_EDI], &sc->edi); | |
837 | __put_user(env->regs[R_ESI], &sc->esi); | |
838 | __put_user(env->regs[R_EBP], &sc->ebp); | |
839 | __put_user(env->regs[R_ESP], &sc->esp); | |
840 | __put_user(env->regs[R_EBX], &sc->ebx); | |
841 | __put_user(env->regs[R_EDX], &sc->edx); | |
842 | __put_user(env->regs[R_ECX], &sc->ecx); | |
843 | __put_user(env->regs[R_EAX], &sc->eax); | |
844 | __put_user(cs->exception_index, &sc->trapno); | |
845 | __put_user(env->error_code, &sc->err); | |
846 | __put_user(env->eip, &sc->eip); | |
847 | __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); | |
848 | __put_user(env->eflags, &sc->eflags); | |
849 | __put_user(env->regs[R_ESP], &sc->esp_at_signal); | |
850 | __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); | |
ed2dcdf6 | 851 | |
28be6234 | 852 | cpu_x86_fsave(env, fpstate_addr, 1); |
ed2dcdf6 | 853 | fpstate->status = fpstate->sw; |
775b58d8 | 854 | magic = 0xffff; |
1d8b512b RV |
855 | __put_user(magic, &fpstate->magic); |
856 | __put_user(fpstate_addr, &sc->fpstate); | |
ed2dcdf6 | 857 | |
66fb9763 | 858 | /* non-iBCS2 extensions.. */ |
1d8b512b RV |
859 | __put_user(mask, &sc->oldmask); |
860 | __put_user(env->cr[2], &sc->cr2); | |
31e31b8a FB |
861 | } |
862 | ||
66fb9763 FB |
863 | /* |
864 | * Determine which stack to use.. | |
865 | */ | |
31e31b8a | 866 | |
579a97f7 | 867 | static inline abi_ulong |
624f7979 | 868 | get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size) |
31e31b8a | 869 | { |
66fb9763 FB |
870 | unsigned long esp; |
871 | ||
872 | /* Default to using normal stack */ | |
873 | esp = env->regs[R_ESP]; | |
66fb9763 | 874 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 875 | if (ka->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
876 | if (sas_ss_flags(esp) == 0) |
877 | esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
878 | } | |
66fb9763 FB |
879 | |
880 | /* This is the legacy signal stack switching. */ | |
5fafdf24 | 881 | else |
a52c757c | 882 | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
624f7979 PB |
883 | !(ka->sa_flags & TARGET_SA_RESTORER) && |
884 | ka->sa_restorer) { | |
885 | esp = (unsigned long) ka->sa_restorer; | |
a52c757c | 886 | } |
579a97f7 | 887 | return (esp - frame_size) & -8ul; |
66fb9763 FB |
888 | } |
889 | ||
579a97f7 | 890 | /* compare linux/arch/i386/kernel/signal.c:setup_frame() */ |
624f7979 | 891 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 892 | target_sigset_t *set, CPUX86State *env) |
66fb9763 | 893 | { |
579a97f7 | 894 | abi_ulong frame_addr; |
66fb9763 | 895 | struct sigframe *frame; |
7df2fa36 | 896 | int i; |
66fb9763 | 897 | |
579a97f7 | 898 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
c8ee0a44 | 899 | trace_user_setup_frame(env, frame_addr); |
66fb9763 | 900 | |
579a97f7 | 901 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 902 | goto give_sigsegv; |
579a97f7 | 903 | |
b6e2c935 | 904 | __put_user(sig, &frame->sig); |
66fb9763 | 905 | |
28be6234 FB |
906 | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0], |
907 | frame_addr + offsetof(struct sigframe, fpstate)); | |
66fb9763 | 908 | |
7df2fa36 RV |
909 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
910 | __put_user(set->sig[i], &frame->extramask[i - 1]); | |
911 | } | |
66fb9763 FB |
912 | |
913 | /* Set up to return from userspace. If provided, use a stub | |
914 | already in userspace. */ | |
624f7979 | 915 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1d8b512b | 916 | __put_user(ka->sa_restorer, &frame->pretcode); |
66fb9763 | 917 | } else { |
775b58d8 | 918 | uint16_t val16; |
28be6234 FB |
919 | abi_ulong retcode_addr; |
920 | retcode_addr = frame_addr + offsetof(struct sigframe, retcode); | |
1d8b512b | 921 | __put_user(retcode_addr, &frame->pretcode); |
66fb9763 | 922 | /* This is popl %eax ; movl $,%eax ; int $0x80 */ |
775b58d8 | 923 | val16 = 0xb858; |
1d8b512b RV |
924 | __put_user(val16, (uint16_t *)(frame->retcode+0)); |
925 | __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); | |
775b58d8 | 926 | val16 = 0x80cd; |
1d8b512b | 927 | __put_user(val16, (uint16_t *)(frame->retcode+6)); |
66fb9763 FB |
928 | } |
929 | ||
66fb9763 FB |
930 | |
931 | /* Set up registers for signal handler */ | |
28be6234 | 932 | env->regs[R_ESP] = frame_addr; |
624f7979 | 933 | env->eip = ka->_sa_handler; |
66fb9763 FB |
934 | |
935 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
936 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
937 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
938 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
939 | env->eflags &= ~TF_MASK; | |
940 | ||
579a97f7 FB |
941 | unlock_user_struct(frame, frame_addr, 1); |
942 | ||
66fb9763 FB |
943 | return; |
944 | ||
945 | give_sigsegv: | |
946 | if (sig == TARGET_SIGSEGV) | |
624f7979 | 947 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
948 | force_sig(TARGET_SIGSEGV /* , current */); |
949 | } | |
950 | ||
579a97f7 | 951 | /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 952 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
953 | target_siginfo_t *info, |
954 | target_sigset_t *set, CPUX86State *env) | |
66fb9763 | 955 | { |
28be6234 | 956 | abi_ulong frame_addr, addr; |
66fb9763 | 957 | struct rt_sigframe *frame; |
0188fadb | 958 | int i; |
66fb9763 | 959 | |
579a97f7 | 960 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
c8ee0a44 | 961 | trace_user_setup_rt_frame(env, frame_addr); |
66fb9763 | 962 | |
579a97f7 | 963 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 964 | goto give_sigsegv; |
66fb9763 | 965 | |
b6e2c935 | 966 | __put_user(sig, &frame->sig); |
28be6234 | 967 | addr = frame_addr + offsetof(struct rt_sigframe, info); |
1d8b512b | 968 | __put_user(addr, &frame->pinfo); |
28be6234 | 969 | addr = frame_addr + offsetof(struct rt_sigframe, uc); |
1d8b512b | 970 | __put_user(addr, &frame->puc); |
f6c7a05b | 971 | tswap_siginfo(&frame->info, info); |
31e31b8a | 972 | |
66fb9763 | 973 | /* Create the ucontext. */ |
1d8b512b RV |
974 | __put_user(0, &frame->uc.tuc_flags); |
975 | __put_user(0, &frame->uc.tuc_link); | |
976 | __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp); | |
977 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), | |
978 | &frame->uc.tuc_stack.ss_flags); | |
979 | __put_user(target_sigaltstack_used.ss_size, | |
980 | &frame->uc.tuc_stack.ss_size); | |
41ecc72b RV |
981 | setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, env, |
982 | set->sig[0], frame_addr + offsetof(struct rt_sigframe, fpstate)); | |
983 | ||
0188fadb RV |
984 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
985 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); | |
986 | } | |
31e31b8a | 987 | |
66fb9763 FB |
988 | /* Set up to return from userspace. If provided, use a stub |
989 | already in userspace. */ | |
624f7979 | 990 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1d8b512b | 991 | __put_user(ka->sa_restorer, &frame->pretcode); |
66fb9763 | 992 | } else { |
775b58d8 | 993 | uint16_t val16; |
28be6234 | 994 | addr = frame_addr + offsetof(struct rt_sigframe, retcode); |
1d8b512b | 995 | __put_user(addr, &frame->pretcode); |
66fb9763 | 996 | /* This is movl $,%eax ; int $0x80 */ |
1d8b512b RV |
997 | __put_user(0xb8, (char *)(frame->retcode+0)); |
998 | __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); | |
775b58d8 | 999 | val16 = 0x80cd; |
1d8b512b | 1000 | __put_user(val16, (uint16_t *)(frame->retcode+5)); |
66fb9763 FB |
1001 | } |
1002 | ||
66fb9763 | 1003 | /* Set up registers for signal handler */ |
28be6234 | 1004 | env->regs[R_ESP] = frame_addr; |
624f7979 | 1005 | env->eip = ka->_sa_handler; |
66fb9763 FB |
1006 | |
1007 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
1008 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
1009 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
1010 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
1011 | env->eflags &= ~TF_MASK; | |
1012 | ||
579a97f7 FB |
1013 | unlock_user_struct(frame, frame_addr, 1); |
1014 | ||
66fb9763 FB |
1015 | return; |
1016 | ||
1017 | give_sigsegv: | |
1018 | if (sig == TARGET_SIGSEGV) | |
624f7979 | 1019 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
1020 | force_sig(TARGET_SIGSEGV /* , current */); |
1021 | } | |
1022 | ||
1023 | static int | |
1024 | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) | |
1025 | { | |
1026 | unsigned int err = 0; | |
28be6234 FB |
1027 | abi_ulong fpstate_addr; |
1028 | unsigned int tmpflags; | |
1029 | ||
1030 | cpu_x86_load_seg(env, R_GS, tswap16(sc->gs)); | |
1031 | cpu_x86_load_seg(env, R_FS, tswap16(sc->fs)); | |
1032 | cpu_x86_load_seg(env, R_ES, tswap16(sc->es)); | |
1033 | cpu_x86_load_seg(env, R_DS, tswap16(sc->ds)); | |
1034 | ||
1035 | env->regs[R_EDI] = tswapl(sc->edi); | |
1036 | env->regs[R_ESI] = tswapl(sc->esi); | |
1037 | env->regs[R_EBP] = tswapl(sc->ebp); | |
1038 | env->regs[R_ESP] = tswapl(sc->esp); | |
1039 | env->regs[R_EBX] = tswapl(sc->ebx); | |
1040 | env->regs[R_EDX] = tswapl(sc->edx); | |
1041 | env->regs[R_ECX] = tswapl(sc->ecx); | |
1042 | env->eip = tswapl(sc->eip); | |
66fb9763 | 1043 | |
9a826d78 MM |
1044 | cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3); |
1045 | cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3); | |
5fafdf24 | 1046 | |
28be6234 FB |
1047 | tmpflags = tswapl(sc->eflags); |
1048 | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); | |
1049 | // regs->orig_eax = -1; /* disable syscall checks */ | |
66fb9763 | 1050 | |
28be6234 FB |
1051 | fpstate_addr = tswapl(sc->fpstate); |
1052 | if (fpstate_addr != 0) { | |
1053 | if (!access_ok(VERIFY_READ, fpstate_addr, | |
1054 | sizeof(struct target_fpstate))) | |
1055 | goto badframe; | |
1056 | cpu_x86_frstor(env, fpstate_addr, 1); | |
66fb9763 | 1057 | } |
ed2dcdf6 | 1058 | |
28be6234 | 1059 | *peax = tswapl(sc->eax); |
66fb9763 | 1060 | return err; |
66fb9763 FB |
1061 | badframe: |
1062 | return 1; | |
66fb9763 FB |
1063 | } |
1064 | ||
1065 | long do_sigreturn(CPUX86State *env) | |
1066 | { | |
579a97f7 FB |
1067 | struct sigframe *frame; |
1068 | abi_ulong frame_addr = env->regs[R_ESP] - 8; | |
c227f099 | 1069 | target_sigset_t target_set; |
66fb9763 FB |
1070 | sigset_t set; |
1071 | int eax, i; | |
1072 | ||
c8ee0a44 | 1073 | trace_user_do_sigreturn(env, frame_addr); |
579a97f7 FB |
1074 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1075 | goto badframe; | |
66fb9763 | 1076 | /* set blocked signals */ |
f5f601af | 1077 | __get_user(target_set.sig[0], &frame->sc.oldmask); |
9231944d | 1078 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
f5f601af | 1079 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
9231944d | 1080 | } |
66fb9763 | 1081 | |
9231944d | 1082 | target_to_host_sigset_internal(&set, &target_set); |
1c275925 | 1083 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
3b46e624 | 1084 | |
66fb9763 FB |
1085 | /* restore registers */ |
1086 | if (restore_sigcontext(env, &frame->sc, &eax)) | |
1087 | goto badframe; | |
579a97f7 | 1088 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1089 | return eax; |
1090 | ||
1091 | badframe: | |
579a97f7 | 1092 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1093 | force_sig(TARGET_SIGSEGV); |
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | long do_rt_sigreturn(CPUX86State *env) | |
1098 | { | |
28be6234 FB |
1099 | abi_ulong frame_addr; |
1100 | struct rt_sigframe *frame; | |
66fb9763 | 1101 | sigset_t set; |
66fb9763 FB |
1102 | int eax; |
1103 | ||
28be6234 | 1104 | frame_addr = env->regs[R_ESP] - 4; |
c8ee0a44 | 1105 | trace_user_do_rt_sigreturn(env, frame_addr); |
28be6234 FB |
1106 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1107 | goto badframe; | |
b8076a74 | 1108 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
1c275925 | 1109 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
5fafdf24 | 1110 | |
b8076a74 | 1111 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax)) |
66fb9763 FB |
1112 | goto badframe; |
1113 | ||
28be6234 FB |
1114 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, |
1115 | get_sp_from_cpustate(env)) == -EFAULT) | |
66fb9763 | 1116 | goto badframe; |
a04e134a | 1117 | |
28be6234 | 1118 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1119 | return eax; |
1120 | ||
1121 | badframe: | |
28be6234 FB |
1122 | unlock_user_struct(frame, frame_addr, 0); |
1123 | force_sig(TARGET_SIGSEGV); | |
66fb9763 FB |
1124 | return 0; |
1125 | } | |
1126 | ||
1744aea1 AS |
1127 | #elif defined(TARGET_AARCH64) |
1128 | ||
1129 | struct target_sigcontext { | |
1130 | uint64_t fault_address; | |
1131 | /* AArch64 registers */ | |
1132 | uint64_t regs[31]; | |
1133 | uint64_t sp; | |
1134 | uint64_t pc; | |
1135 | uint64_t pstate; | |
1136 | /* 4K reserved for FP/SIMD state and future expansion */ | |
1137 | char __reserved[4096] __attribute__((__aligned__(16))); | |
1138 | }; | |
1139 | ||
1140 | struct target_ucontext { | |
1141 | abi_ulong tuc_flags; | |
1142 | abi_ulong tuc_link; | |
1143 | target_stack_t tuc_stack; | |
1144 | target_sigset_t tuc_sigmask; | |
1145 | /* glibc uses a 1024-bit sigset_t */ | |
1146 | char __unused[1024 / 8 - sizeof(target_sigset_t)]; | |
1147 | /* last for future expansion */ | |
1148 | struct target_sigcontext tuc_mcontext; | |
1149 | }; | |
1150 | ||
1151 | /* | |
1152 | * Header to be used at the beginning of structures extending the user | |
1153 | * context. Such structures must be placed after the rt_sigframe on the stack | |
1154 | * and be 16-byte aligned. The last structure must be a dummy one with the | |
1155 | * magic and size set to 0. | |
1156 | */ | |
1157 | struct target_aarch64_ctx { | |
1158 | uint32_t magic; | |
1159 | uint32_t size; | |
1160 | }; | |
1161 | ||
1162 | #define TARGET_FPSIMD_MAGIC 0x46508001 | |
1163 | ||
1164 | struct target_fpsimd_context { | |
1165 | struct target_aarch64_ctx head; | |
1166 | uint32_t fpsr; | |
1167 | uint32_t fpcr; | |
1168 | uint64_t vregs[32 * 2]; /* really uint128_t vregs[32] */ | |
1169 | }; | |
1170 | ||
1171 | /* | |
1172 | * Auxiliary context saved in the sigcontext.__reserved array. Not exported to | |
1173 | * user space as it will change with the addition of new context. User space | |
1174 | * should check the magic/size information. | |
1175 | */ | |
1176 | struct target_aux_context { | |
1177 | struct target_fpsimd_context fpsimd; | |
1178 | /* additional context to be added before "end" */ | |
1179 | struct target_aarch64_ctx end; | |
1180 | }; | |
1181 | ||
1182 | struct target_rt_sigframe { | |
1183 | struct target_siginfo info; | |
1184 | struct target_ucontext uc; | |
1185 | uint64_t fp; | |
1186 | uint64_t lr; | |
1187 | uint32_t tramp[2]; | |
1188 | }; | |
1189 | ||
1190 | static int target_setup_sigframe(struct target_rt_sigframe *sf, | |
1191 | CPUARMState *env, target_sigset_t *set) | |
1192 | { | |
1193 | int i; | |
1194 | struct target_aux_context *aux = | |
1195 | (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved; | |
1196 | ||
1197 | /* set up the stack frame for unwinding */ | |
1198 | __put_user(env->xregs[29], &sf->fp); | |
1199 | __put_user(env->xregs[30], &sf->lr); | |
1200 | ||
1201 | for (i = 0; i < 31; i++) { | |
1202 | __put_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]); | |
1203 | } | |
1204 | __put_user(env->xregs[31], &sf->uc.tuc_mcontext.sp); | |
1205 | __put_user(env->pc, &sf->uc.tuc_mcontext.pc); | |
d356312f | 1206 | __put_user(pstate_read(env), &sf->uc.tuc_mcontext.pstate); |
1744aea1 | 1207 | |
7af03928 | 1208 | __put_user(env->exception.vaddress, &sf->uc.tuc_mcontext.fault_address); |
1744aea1 AS |
1209 | |
1210 | for (i = 0; i < TARGET_NSIG_WORDS; i++) { | |
1211 | __put_user(set->sig[i], &sf->uc.tuc_sigmask.sig[i]); | |
1212 | } | |
1213 | ||
1214 | for (i = 0; i < 32; i++) { | |
1215 | #ifdef TARGET_WORDS_BIGENDIAN | |
1216 | __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]); | |
1217 | __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]); | |
1218 | #else | |
1219 | __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]); | |
1220 | __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]); | |
1221 | #endif | |
1222 | } | |
e0ee138b WN |
1223 | __put_user(vfp_get_fpsr(env), &aux->fpsimd.fpsr); |
1224 | __put_user(vfp_get_fpcr(env), &aux->fpsimd.fpcr); | |
1744aea1 AS |
1225 | __put_user(TARGET_FPSIMD_MAGIC, &aux->fpsimd.head.magic); |
1226 | __put_user(sizeof(struct target_fpsimd_context), | |
1227 | &aux->fpsimd.head.size); | |
1228 | ||
1229 | /* set the "end" magic */ | |
1230 | __put_user(0, &aux->end.magic); | |
1231 | __put_user(0, &aux->end.size); | |
1232 | ||
1233 | return 0; | |
1234 | } | |
1235 | ||
1236 | static int target_restore_sigframe(CPUARMState *env, | |
1237 | struct target_rt_sigframe *sf) | |
1238 | { | |
1239 | sigset_t set; | |
1240 | int i; | |
1241 | struct target_aux_context *aux = | |
1242 | (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved; | |
e0ee138b | 1243 | uint32_t magic, size, fpsr, fpcr; |
d356312f | 1244 | uint64_t pstate; |
1744aea1 AS |
1245 | |
1246 | target_to_host_sigset(&set, &sf->uc.tuc_sigmask); | |
1c275925 | 1247 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
1744aea1 AS |
1248 | |
1249 | for (i = 0; i < 31; i++) { | |
1250 | __get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]); | |
1251 | } | |
1252 | ||
1253 | __get_user(env->xregs[31], &sf->uc.tuc_mcontext.sp); | |
1254 | __get_user(env->pc, &sf->uc.tuc_mcontext.pc); | |
d356312f PM |
1255 | __get_user(pstate, &sf->uc.tuc_mcontext.pstate); |
1256 | pstate_write(env, pstate); | |
1744aea1 AS |
1257 | |
1258 | __get_user(magic, &aux->fpsimd.head.magic); | |
1259 | __get_user(size, &aux->fpsimd.head.size); | |
1260 | ||
1261 | if (magic != TARGET_FPSIMD_MAGIC | |
1262 | || size != sizeof(struct target_fpsimd_context)) { | |
1263 | return 1; | |
1264 | } | |
1265 | ||
4cf23480 PM |
1266 | for (i = 0; i < 32; i++) { |
1267 | #ifdef TARGET_WORDS_BIGENDIAN | |
1268 | __get_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]); | |
1269 | __get_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]); | |
1270 | #else | |
1271 | __get_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]); | |
1272 | __get_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]); | |
1273 | #endif | |
1744aea1 | 1274 | } |
e0ee138b WN |
1275 | __get_user(fpsr, &aux->fpsimd.fpsr); |
1276 | vfp_set_fpsr(env, fpsr); | |
1277 | __get_user(fpcr, &aux->fpsimd.fpcr); | |
1278 | vfp_set_fpcr(env, fpcr); | |
1744aea1 AS |
1279 | |
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | static abi_ulong get_sigframe(struct target_sigaction *ka, CPUARMState *env) | |
1284 | { | |
1285 | abi_ulong sp; | |
1286 | ||
1287 | sp = env->xregs[31]; | |
1288 | ||
1289 | /* | |
1290 | * This is the X/Open sanctioned signal stack switching. | |
1291 | */ | |
b545f63f | 1292 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) { |
1744aea1 AS |
1293 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
1294 | } | |
1295 | ||
1296 | sp = (sp - sizeof(struct target_rt_sigframe)) & ~15; | |
1297 | ||
1298 | return sp; | |
1299 | } | |
1300 | ||
1301 | static void target_setup_frame(int usig, struct target_sigaction *ka, | |
1302 | target_siginfo_t *info, target_sigset_t *set, | |
1303 | CPUARMState *env) | |
1304 | { | |
1305 | struct target_rt_sigframe *frame; | |
8a3ae910 | 1306 | abi_ulong frame_addr, return_addr; |
1744aea1 AS |
1307 | |
1308 | frame_addr = get_sigframe(ka, env); | |
c8ee0a44 | 1309 | trace_user_setup_frame(env, frame_addr); |
1744aea1 AS |
1310 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { |
1311 | goto give_sigsegv; | |
1312 | } | |
1313 | ||
1314 | __put_user(0, &frame->uc.tuc_flags); | |
1315 | __put_user(0, &frame->uc.tuc_link); | |
1316 | ||
1317 | __put_user(target_sigaltstack_used.ss_sp, | |
1318 | &frame->uc.tuc_stack.ss_sp); | |
1319 | __put_user(sas_ss_flags(env->xregs[31]), | |
1320 | &frame->uc.tuc_stack.ss_flags); | |
1321 | __put_user(target_sigaltstack_used.ss_size, | |
1322 | &frame->uc.tuc_stack.ss_size); | |
1323 | target_setup_sigframe(frame, env, set); | |
8a3ae910 MM |
1324 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1325 | return_addr = ka->sa_restorer; | |
1326 | } else { | |
1327 | /* mov x8,#__NR_rt_sigreturn; svc #0 */ | |
1328 | __put_user(0xd2801168, &frame->tramp[0]); | |
1329 | __put_user(0xd4000001, &frame->tramp[1]); | |
1330 | return_addr = frame_addr + offsetof(struct target_rt_sigframe, tramp); | |
1331 | } | |
1744aea1 AS |
1332 | env->xregs[0] = usig; |
1333 | env->xregs[31] = frame_addr; | |
1334 | env->xregs[29] = env->xregs[31] + offsetof(struct target_rt_sigframe, fp); | |
1335 | env->pc = ka->_sa_handler; | |
8a3ae910 | 1336 | env->xregs[30] = return_addr; |
1744aea1 | 1337 | if (info) { |
f6c7a05b | 1338 | tswap_siginfo(&frame->info, info); |
1744aea1 AS |
1339 | env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info); |
1340 | env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
1341 | } | |
1342 | ||
1343 | unlock_user_struct(frame, frame_addr, 1); | |
1344 | return; | |
1345 | ||
1346 | give_sigsegv: | |
1347 | unlock_user_struct(frame, frame_addr, 1); | |
1348 | force_sig(TARGET_SIGSEGV); | |
1349 | } | |
1350 | ||
1351 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
1352 | target_siginfo_t *info, target_sigset_t *set, | |
1353 | CPUARMState *env) | |
1354 | { | |
1355 | target_setup_frame(sig, ka, info, set, env); | |
1356 | } | |
1357 | ||
1358 | static void setup_frame(int sig, struct target_sigaction *ka, | |
1359 | target_sigset_t *set, CPUARMState *env) | |
1360 | { | |
1361 | target_setup_frame(sig, ka, 0, set, env); | |
1362 | } | |
1363 | ||
1364 | long do_rt_sigreturn(CPUARMState *env) | |
1365 | { | |
7f72cd23 | 1366 | struct target_rt_sigframe *frame = NULL; |
1744aea1 AS |
1367 | abi_ulong frame_addr = env->xregs[31]; |
1368 | ||
c8ee0a44 | 1369 | trace_user_do_rt_sigreturn(env, frame_addr); |
1744aea1 AS |
1370 | if (frame_addr & 15) { |
1371 | goto badframe; | |
1372 | } | |
1373 | ||
1374 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
1375 | goto badframe; | |
1376 | } | |
1377 | ||
1378 | if (target_restore_sigframe(env, frame)) { | |
1379 | goto badframe; | |
1380 | } | |
1381 | ||
1382 | if (do_sigaltstack(frame_addr + | |
1383 | offsetof(struct target_rt_sigframe, uc.tuc_stack), | |
1384 | 0, get_sp_from_cpustate(env)) == -EFAULT) { | |
1385 | goto badframe; | |
1386 | } | |
1387 | ||
1388 | unlock_user_struct(frame, frame_addr, 0); | |
1389 | return env->xregs[0]; | |
1390 | ||
1391 | badframe: | |
1392 | unlock_user_struct(frame, frame_addr, 0); | |
1393 | force_sig(TARGET_SIGSEGV); | |
1394 | return 0; | |
1395 | } | |
1396 | ||
1397 | long do_sigreturn(CPUARMState *env) | |
1398 | { | |
1399 | return do_rt_sigreturn(env); | |
1400 | } | |
1401 | ||
43fff238 FB |
1402 | #elif defined(TARGET_ARM) |
1403 | ||
1404 | struct target_sigcontext { | |
992f48a0 BS |
1405 | abi_ulong trap_no; |
1406 | abi_ulong error_code; | |
1407 | abi_ulong oldmask; | |
1408 | abi_ulong arm_r0; | |
1409 | abi_ulong arm_r1; | |
1410 | abi_ulong arm_r2; | |
1411 | abi_ulong arm_r3; | |
1412 | abi_ulong arm_r4; | |
1413 | abi_ulong arm_r5; | |
1414 | abi_ulong arm_r6; | |
1415 | abi_ulong arm_r7; | |
1416 | abi_ulong arm_r8; | |
1417 | abi_ulong arm_r9; | |
1418 | abi_ulong arm_r10; | |
1419 | abi_ulong arm_fp; | |
1420 | abi_ulong arm_ip; | |
1421 | abi_ulong arm_sp; | |
1422 | abi_ulong arm_lr; | |
1423 | abi_ulong arm_pc; | |
1424 | abi_ulong arm_cpsr; | |
1425 | abi_ulong fault_address; | |
43fff238 FB |
1426 | }; |
1427 | ||
a745ec6d PB |
1428 | struct target_ucontext_v1 { |
1429 | abi_ulong tuc_flags; | |
1430 | abi_ulong tuc_link; | |
c227f099 | 1431 | target_stack_t tuc_stack; |
a745ec6d | 1432 | struct target_sigcontext tuc_mcontext; |
c227f099 | 1433 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
a745ec6d PB |
1434 | }; |
1435 | ||
1436 | struct target_ucontext_v2 { | |
992f48a0 BS |
1437 | abi_ulong tuc_flags; |
1438 | abi_ulong tuc_link; | |
c227f099 | 1439 | target_stack_t tuc_stack; |
b8076a74 | 1440 | struct target_sigcontext tuc_mcontext; |
c227f099 | 1441 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
5f0b7c88 | 1442 | char __unused[128 - sizeof(target_sigset_t)]; |
a745ec6d | 1443 | abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); |
43fff238 FB |
1444 | }; |
1445 | ||
0d871bdb PM |
1446 | struct target_user_vfp { |
1447 | uint64_t fpregs[32]; | |
1448 | abi_ulong fpscr; | |
1449 | }; | |
1450 | ||
1451 | struct target_user_vfp_exc { | |
1452 | abi_ulong fpexc; | |
1453 | abi_ulong fpinst; | |
1454 | abi_ulong fpinst2; | |
1455 | }; | |
1456 | ||
1457 | struct target_vfp_sigframe { | |
1458 | abi_ulong magic; | |
1459 | abi_ulong size; | |
1460 | struct target_user_vfp ufp; | |
1461 | struct target_user_vfp_exc ufp_exc; | |
1462 | } __attribute__((__aligned__(8))); | |
1463 | ||
08e11256 PM |
1464 | struct target_iwmmxt_sigframe { |
1465 | abi_ulong magic; | |
1466 | abi_ulong size; | |
1467 | uint64_t regs[16]; | |
1468 | /* Note that not all the coprocessor control registers are stored here */ | |
1469 | uint32_t wcssf; | |
1470 | uint32_t wcasf; | |
1471 | uint32_t wcgr0; | |
1472 | uint32_t wcgr1; | |
1473 | uint32_t wcgr2; | |
1474 | uint32_t wcgr3; | |
1475 | } __attribute__((__aligned__(8))); | |
1476 | ||
0d871bdb | 1477 | #define TARGET_VFP_MAGIC 0x56465001 |
08e11256 | 1478 | #define TARGET_IWMMXT_MAGIC 0x12ef842a |
0d871bdb | 1479 | |
a8c33204 | 1480 | struct sigframe_v1 |
43fff238 FB |
1481 | { |
1482 | struct target_sigcontext sc; | |
992f48a0 BS |
1483 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
1484 | abi_ulong retcode; | |
43fff238 FB |
1485 | }; |
1486 | ||
a8c33204 PB |
1487 | struct sigframe_v2 |
1488 | { | |
1489 | struct target_ucontext_v2 uc; | |
1490 | abi_ulong retcode; | |
1491 | }; | |
1492 | ||
a745ec6d | 1493 | struct rt_sigframe_v1 |
43fff238 | 1494 | { |
f8b0aa25 FB |
1495 | abi_ulong pinfo; |
1496 | abi_ulong puc; | |
43fff238 | 1497 | struct target_siginfo info; |
a745ec6d PB |
1498 | struct target_ucontext_v1 uc; |
1499 | abi_ulong retcode; | |
1500 | }; | |
1501 | ||
1502 | struct rt_sigframe_v2 | |
1503 | { | |
1504 | struct target_siginfo info; | |
1505 | struct target_ucontext_v2 uc; | |
992f48a0 | 1506 | abi_ulong retcode; |
43fff238 FB |
1507 | }; |
1508 | ||
1509 | #define TARGET_CONFIG_CPU_32 1 | |
1510 | ||
1511 | /* | |
1512 | * For ARM syscalls, we encode the syscall number into the instruction. | |
1513 | */ | |
1514 | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) | |
1515 | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) | |
1516 | ||
1517 | /* | |
1518 | * For Thumb syscalls, we pass the syscall number via r7. We therefore | |
1519 | * need two 16-bit instructions. | |
1520 | */ | |
1521 | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) | |
1522 | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) | |
1523 | ||
992f48a0 | 1524 | static const abi_ulong retcodes[4] = { |
43fff238 FB |
1525 | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
1526 | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN | |
1527 | }; | |
1528 | ||
1529 | ||
05390248 | 1530 | static inline int valid_user_regs(CPUARMState *regs) |
43fff238 FB |
1531 | { |
1532 | return 1; | |
1533 | } | |
1534 | ||
a8c33204 | 1535 | static void |
43fff238 | 1536 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
05390248 | 1537 | CPUARMState *env, abi_ulong mask) |
43fff238 | 1538 | { |
a8c33204 PB |
1539 | __put_user(env->regs[0], &sc->arm_r0); |
1540 | __put_user(env->regs[1], &sc->arm_r1); | |
1541 | __put_user(env->regs[2], &sc->arm_r2); | |
1542 | __put_user(env->regs[3], &sc->arm_r3); | |
1543 | __put_user(env->regs[4], &sc->arm_r4); | |
1544 | __put_user(env->regs[5], &sc->arm_r5); | |
1545 | __put_user(env->regs[6], &sc->arm_r6); | |
1546 | __put_user(env->regs[7], &sc->arm_r7); | |
1547 | __put_user(env->regs[8], &sc->arm_r8); | |
1548 | __put_user(env->regs[9], &sc->arm_r9); | |
1549 | __put_user(env->regs[10], &sc->arm_r10); | |
1550 | __put_user(env->regs[11], &sc->arm_fp); | |
1551 | __put_user(env->regs[12], &sc->arm_ip); | |
1552 | __put_user(env->regs[13], &sc->arm_sp); | |
1553 | __put_user(env->regs[14], &sc->arm_lr); | |
1554 | __put_user(env->regs[15], &sc->arm_pc); | |
43fff238 | 1555 | #ifdef TARGET_CONFIG_CPU_32 |
a8c33204 | 1556 | __put_user(cpsr_read(env), &sc->arm_cpsr); |
43fff238 FB |
1557 | #endif |
1558 | ||
a8c33204 PB |
1559 | __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); |
1560 | __put_user(/* current->thread.error_code */ 0, &sc->error_code); | |
1561 | __put_user(/* current->thread.address */ 0, &sc->fault_address); | |
1562 | __put_user(mask, &sc->oldmask); | |
43fff238 FB |
1563 | } |
1564 | ||
579a97f7 | 1565 | static inline abi_ulong |
05390248 | 1566 | get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize) |
43fff238 FB |
1567 | { |
1568 | unsigned long sp = regs->regs[13]; | |
1569 | ||
43fff238 FB |
1570 | /* |
1571 | * This is the X/Open sanctioned signal stack switching. | |
1572 | */ | |
624f7979 | 1573 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) |
a04e134a | 1574 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
43fff238 FB |
1575 | /* |
1576 | * ATPCS B01 mandates 8-byte alignment | |
1577 | */ | |
579a97f7 | 1578 | return (sp - framesize) & ~7; |
43fff238 FB |
1579 | } |
1580 | ||
0188fadb | 1581 | static void |
05390248 | 1582 | setup_return(CPUARMState *env, struct target_sigaction *ka, |
f8b0aa25 | 1583 | abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr) |
43fff238 | 1584 | { |
624f7979 | 1585 | abi_ulong handler = ka->_sa_handler; |
992f48a0 | 1586 | abi_ulong retcode; |
75b680e5 | 1587 | int thumb = handler & 1; |
964413d9 PM |
1588 | uint32_t cpsr = cpsr_read(env); |
1589 | ||
1590 | cpsr &= ~CPSR_IT; | |
1591 | if (thumb) { | |
1592 | cpsr |= CPSR_T; | |
1593 | } else { | |
1594 | cpsr &= ~CPSR_T; | |
1595 | } | |
43fff238 | 1596 | |
624f7979 PB |
1597 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1598 | retcode = ka->sa_restorer; | |
43fff238 FB |
1599 | } else { |
1600 | unsigned int idx = thumb; | |
1601 | ||
624f7979 | 1602 | if (ka->sa_flags & TARGET_SA_SIGINFO) |
43fff238 FB |
1603 | idx += 2; |
1604 | ||
0188fadb | 1605 | __put_user(retcodes[idx], rc); |
ca8a277c | 1606 | |
f8b0aa25 | 1607 | retcode = rc_addr + thumb; |
43fff238 FB |
1608 | } |
1609 | ||
1610 | env->regs[0] = usig; | |
f8b0aa25 | 1611 | env->regs[13] = frame_addr; |
43fff238 FB |
1612 | env->regs[14] = retcode; |
1613 | env->regs[15] = handler & (thumb ? ~1 : ~3); | |
964413d9 | 1614 | cpsr_write(env, cpsr, 0xffffffff); |
43fff238 FB |
1615 | } |
1616 | ||
05390248 | 1617 | static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env) |
0d871bdb PM |
1618 | { |
1619 | int i; | |
1620 | struct target_vfp_sigframe *vfpframe; | |
1621 | vfpframe = (struct target_vfp_sigframe *)regspace; | |
1622 | __put_user(TARGET_VFP_MAGIC, &vfpframe->magic); | |
1623 | __put_user(sizeof(*vfpframe), &vfpframe->size); | |
1624 | for (i = 0; i < 32; i++) { | |
005e1a0a | 1625 | __put_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]); |
0d871bdb PM |
1626 | } |
1627 | __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr); | |
1628 | __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc); | |
1629 | __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); | |
1630 | __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2); | |
1631 | return (abi_ulong*)(vfpframe+1); | |
1632 | } | |
1633 | ||
05390248 AF |
1634 | static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace, |
1635 | CPUARMState *env) | |
08e11256 PM |
1636 | { |
1637 | int i; | |
1638 | struct target_iwmmxt_sigframe *iwmmxtframe; | |
1639 | iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace; | |
1640 | __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic); | |
1641 | __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size); | |
1642 | for (i = 0; i < 16; i++) { | |
1643 | __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); | |
1644 | } | |
1645 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); | |
1646 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); | |
1647 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); | |
1648 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); | |
1649 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); | |
1650 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); | |
1651 | return (abi_ulong*)(iwmmxtframe+1); | |
1652 | } | |
1653 | ||
a8c33204 | 1654 | static void setup_sigframe_v2(struct target_ucontext_v2 *uc, |
05390248 | 1655 | target_sigset_t *set, CPUARMState *env) |
a8c33204 PB |
1656 | { |
1657 | struct target_sigaltstack stack; | |
1658 | int i; | |
0d871bdb | 1659 | abi_ulong *regspace; |
a8c33204 PB |
1660 | |
1661 | /* Clear all the bits of the ucontext we don't use. */ | |
1662 | memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); | |
1663 | ||
1664 | memset(&stack, 0, sizeof(stack)); | |
1665 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1666 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1667 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
1668 | memcpy(&uc->tuc_stack, &stack, sizeof(stack)); | |
1669 | ||
1670 | setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]); | |
0d871bdb PM |
1671 | /* Save coprocessor signal frame. */ |
1672 | regspace = uc->tuc_regspace; | |
1673 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
1674 | regspace = setup_sigframe_v2_vfp(regspace, env); | |
1675 | } | |
08e11256 PM |
1676 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
1677 | regspace = setup_sigframe_v2_iwmmxt(regspace, env); | |
1678 | } | |
1679 | ||
0d871bdb PM |
1680 | /* Write terminating magic word */ |
1681 | __put_user(0, regspace); | |
1682 | ||
a8c33204 PB |
1683 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1684 | __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); | |
1685 | } | |
1686 | } | |
1687 | ||
579a97f7 | 1688 | /* compare linux/arch/arm/kernel/signal.c:setup_frame() */ |
624f7979 | 1689 | static void setup_frame_v1(int usig, struct target_sigaction *ka, |
05390248 | 1690 | target_sigset_t *set, CPUARMState *regs) |
43fff238 | 1691 | { |
a8c33204 | 1692 | struct sigframe_v1 *frame; |
579a97f7 | 1693 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
a8c33204 | 1694 | int i; |
43fff238 | 1695 | |
c8ee0a44 | 1696 | trace_user_setup_frame(regs, frame_addr); |
579a97f7 FB |
1697 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1698 | return; | |
1699 | ||
a8c33204 | 1700 | setup_sigcontext(&frame->sc, regs, set->sig[0]); |
43fff238 | 1701 | |
0188fadb RV |
1702 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1703 | __put_user(set->sig[i], &frame->extramask[i - 1]); | |
1704 | } | |
43fff238 | 1705 | |
a8c33204 PB |
1706 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, |
1707 | frame_addr + offsetof(struct sigframe_v1, retcode)); | |
579a97f7 | 1708 | |
579a97f7 | 1709 | unlock_user_struct(frame, frame_addr, 1); |
a8c33204 PB |
1710 | } |
1711 | ||
624f7979 | 1712 | static void setup_frame_v2(int usig, struct target_sigaction *ka, |
05390248 | 1713 | target_sigset_t *set, CPUARMState *regs) |
a8c33204 PB |
1714 | { |
1715 | struct sigframe_v2 *frame; | |
1716 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); | |
1717 | ||
c8ee0a44 | 1718 | trace_user_setup_frame(regs, frame_addr); |
a8c33204 PB |
1719 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1720 | return; | |
1721 | ||
1722 | setup_sigframe_v2(&frame->uc, set, regs); | |
1723 | ||
1724 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, | |
1725 | frame_addr + offsetof(struct sigframe_v2, retcode)); | |
1726 | ||
1727 | unlock_user_struct(frame, frame_addr, 1); | |
1728 | } | |
1729 | ||
624f7979 | 1730 | static void setup_frame(int usig, struct target_sigaction *ka, |
05390248 | 1731 | target_sigset_t *set, CPUARMState *regs) |
a8c33204 PB |
1732 | { |
1733 | if (get_osversion() >= 0x020612) { | |
1734 | setup_frame_v2(usig, ka, set, regs); | |
1735 | } else { | |
1736 | setup_frame_v1(usig, ka, set, regs); | |
1737 | } | |
43fff238 FB |
1738 | } |
1739 | ||
579a97f7 | 1740 | /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 1741 | static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, |
c227f099 | 1742 | target_siginfo_t *info, |
05390248 | 1743 | target_sigset_t *set, CPUARMState *env) |
43fff238 | 1744 | { |
a745ec6d | 1745 | struct rt_sigframe_v1 *frame; |
579a97f7 | 1746 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
a04e134a | 1747 | struct target_sigaltstack stack; |
a8c33204 | 1748 | int i; |
f8b0aa25 | 1749 | abi_ulong info_addr, uc_addr; |
43fff238 | 1750 | |
c8ee0a44 | 1751 | trace_user_setup_rt_frame(env, frame_addr); |
579a97f7 | 1752 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
edf779ff FB |
1753 | return /* 1 */; |
1754 | ||
a745ec6d | 1755 | info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info); |
a8c33204 | 1756 | __put_user(info_addr, &frame->pinfo); |
a745ec6d | 1757 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc); |
a8c33204 | 1758 | __put_user(uc_addr, &frame->puc); |
f6c7a05b | 1759 | tswap_siginfo(&frame->info, info); |
43fff238 FB |
1760 | |
1761 | /* Clear all the bits of the ucontext we don't use. */ | |
a745ec6d | 1762 | memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext)); |
43fff238 | 1763 | |
a04e134a TS |
1764 | memset(&stack, 0, sizeof(stack)); |
1765 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1766 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1767 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
775b58d8 | 1768 | memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack)); |
a04e134a | 1769 | |
a8c33204 | 1770 | setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]); |
9231944d | 1771 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
0188fadb | 1772 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
9231944d | 1773 | } |
43fff238 | 1774 | |
a8c33204 PB |
1775 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1776 | frame_addr + offsetof(struct rt_sigframe_v1, retcode)); | |
a745ec6d | 1777 | |
a8c33204 PB |
1778 | env->regs[1] = info_addr; |
1779 | env->regs[2] = uc_addr; | |
a745ec6d | 1780 | |
a745ec6d | 1781 | unlock_user_struct(frame, frame_addr, 1); |
a745ec6d PB |
1782 | } |
1783 | ||
624f7979 | 1784 | static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, |
c227f099 | 1785 | target_siginfo_t *info, |
05390248 | 1786 | target_sigset_t *set, CPUARMState *env) |
a745ec6d PB |
1787 | { |
1788 | struct rt_sigframe_v2 *frame; | |
1789 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
a745ec6d PB |
1790 | abi_ulong info_addr, uc_addr; |
1791 | ||
c8ee0a44 | 1792 | trace_user_setup_rt_frame(env, frame_addr); |
a745ec6d PB |
1793 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1794 | return /* 1 */; | |
1795 | ||
1796 | info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info); | |
1797 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc); | |
f6c7a05b | 1798 | tswap_siginfo(&frame->info, info); |
a745ec6d | 1799 | |
a8c33204 | 1800 | setup_sigframe_v2(&frame->uc, set, env); |
a745ec6d | 1801 | |
a8c33204 PB |
1802 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1803 | frame_addr + offsetof(struct rt_sigframe_v2, retcode)); | |
a745ec6d | 1804 | |
a8c33204 PB |
1805 | env->regs[1] = info_addr; |
1806 | env->regs[2] = uc_addr; | |
43fff238 | 1807 | |
579a97f7 | 1808 | unlock_user_struct(frame, frame_addr, 1); |
43fff238 FB |
1809 | } |
1810 | ||
624f7979 | 1811 | static void setup_rt_frame(int usig, struct target_sigaction *ka, |
c227f099 | 1812 | target_siginfo_t *info, |
05390248 | 1813 | target_sigset_t *set, CPUARMState *env) |
a745ec6d PB |
1814 | { |
1815 | if (get_osversion() >= 0x020612) { | |
1816 | setup_rt_frame_v2(usig, ka, info, set, env); | |
1817 | } else { | |
1818 | setup_rt_frame_v1(usig, ka, info, set, env); | |
1819 | } | |
1820 | } | |
1821 | ||
43fff238 | 1822 | static int |
05390248 | 1823 | restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc) |
43fff238 FB |
1824 | { |
1825 | int err = 0; | |
b5ff1b31 | 1826 | uint32_t cpsr; |
43fff238 | 1827 | |
1d8b512b RV |
1828 | __get_user(env->regs[0], &sc->arm_r0); |
1829 | __get_user(env->regs[1], &sc->arm_r1); | |
1830 | __get_user(env->regs[2], &sc->arm_r2); | |
1831 | __get_user(env->regs[3], &sc->arm_r3); | |
1832 | __get_user(env->regs[4], &sc->arm_r4); | |
1833 | __get_user(env->regs[5], &sc->arm_r5); | |
1834 | __get_user(env->regs[6], &sc->arm_r6); | |
1835 | __get_user(env->regs[7], &sc->arm_r7); | |
1836 | __get_user(env->regs[8], &sc->arm_r8); | |
1837 | __get_user(env->regs[9], &sc->arm_r9); | |
1838 | __get_user(env->regs[10], &sc->arm_r10); | |
1839 | __get_user(env->regs[11], &sc->arm_fp); | |
1840 | __get_user(env->regs[12], &sc->arm_ip); | |
1841 | __get_user(env->regs[13], &sc->arm_sp); | |
1842 | __get_user(env->regs[14], &sc->arm_lr); | |
1843 | __get_user(env->regs[15], &sc->arm_pc); | |
43fff238 | 1844 | #ifdef TARGET_CONFIG_CPU_32 |
1d8b512b | 1845 | __get_user(cpsr, &sc->arm_cpsr); |
75b680e5 | 1846 | cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC); |
43fff238 FB |
1847 | #endif |
1848 | ||
1849 | err |= !valid_user_regs(env); | |
1850 | ||
1851 | return err; | |
1852 | } | |
1853 | ||
05390248 | 1854 | static long do_sigreturn_v1(CPUARMState *env) |
43fff238 | 1855 | { |
f8b0aa25 | 1856 | abi_ulong frame_addr; |
978fae9f | 1857 | struct sigframe_v1 *frame = NULL; |
c227f099 | 1858 | target_sigset_t set; |
43fff238 | 1859 | sigset_t host_set; |
9231944d | 1860 | int i; |
43fff238 FB |
1861 | |
1862 | /* | |
1863 | * Since we stacked the signal on a 64-bit boundary, | |
1864 | * then 'sp' should be word aligned here. If it's | |
1865 | * not, then the user is trying to mess with us. | |
1866 | */ | |
f8b0aa25 | 1867 | frame_addr = env->regs[13]; |
c8ee0a44 | 1868 | trace_user_do_sigreturn(env, frame_addr); |
978fae9f PM |
1869 | if (frame_addr & 7) { |
1870 | goto badframe; | |
1871 | } | |
1872 | ||
f8b0aa25 FB |
1873 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1874 | goto badframe; | |
43fff238 | 1875 | |
f5f601af RV |
1876 | __get_user(set.sig[0], &frame->sc.oldmask); |
1877 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
1878 | __get_user(set.sig[i], &frame->extramask[i - 1]); | |
1879 | } | |
43fff238 | 1880 | |
9231944d | 1881 | target_to_host_sigset_internal(&host_set, &set); |
1c275925 | 1882 | do_sigprocmask(SIG_SETMASK, &host_set, NULL); |
43fff238 FB |
1883 | |
1884 | if (restore_sigcontext(env, &frame->sc)) | |
1885 | goto badframe; | |
1886 | ||
1887 | #if 0 | |
1888 | /* Send SIGTRAP if we're single-stepping */ | |
1889 | if (ptrace_cancel_bpt(current)) | |
1890 | send_sig(SIGTRAP, current, 1); | |
1891 | #endif | |
f8b0aa25 FB |
1892 | unlock_user_struct(frame, frame_addr, 0); |
1893 | return env->regs[0]; | |
43fff238 FB |
1894 | |
1895 | badframe: | |
66393fb9 | 1896 | force_sig(TARGET_SIGSEGV /* , current */); |
43fff238 FB |
1897 | return 0; |
1898 | } | |
1899 | ||
05390248 | 1900 | static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *regspace) |
5f9099d9 PM |
1901 | { |
1902 | int i; | |
1903 | abi_ulong magic, sz; | |
1904 | uint32_t fpscr, fpexc; | |
1905 | struct target_vfp_sigframe *vfpframe; | |
1906 | vfpframe = (struct target_vfp_sigframe *)regspace; | |
1907 | ||
1908 | __get_user(magic, &vfpframe->magic); | |
1909 | __get_user(sz, &vfpframe->size); | |
1910 | if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) { | |
1911 | return 0; | |
1912 | } | |
1913 | for (i = 0; i < 32; i++) { | |
005e1a0a | 1914 | __get_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]); |
5f9099d9 PM |
1915 | } |
1916 | __get_user(fpscr, &vfpframe->ufp.fpscr); | |
1917 | vfp_set_fpscr(env, fpscr); | |
1918 | __get_user(fpexc, &vfpframe->ufp_exc.fpexc); | |
1919 | /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid | |
1920 | * and the exception flag is cleared | |
1921 | */ | |
1922 | fpexc |= (1 << 30); | |
1923 | fpexc &= ~((1 << 31) | (1 << 28)); | |
1924 | env->vfp.xregs[ARM_VFP_FPEXC] = fpexc; | |
1925 | __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); | |
1926 | __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2); | |
1927 | return (abi_ulong*)(vfpframe + 1); | |
1928 | } | |
1929 | ||
05390248 AF |
1930 | static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env, |
1931 | abi_ulong *regspace) | |
a59d69da PM |
1932 | { |
1933 | int i; | |
1934 | abi_ulong magic, sz; | |
1935 | struct target_iwmmxt_sigframe *iwmmxtframe; | |
1936 | iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace; | |
1937 | ||
1938 | __get_user(magic, &iwmmxtframe->magic); | |
1939 | __get_user(sz, &iwmmxtframe->size); | |
1940 | if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) { | |
1941 | return 0; | |
1942 | } | |
1943 | for (i = 0; i < 16; i++) { | |
1944 | __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); | |
1945 | } | |
1946 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); | |
1947 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); | |
1948 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); | |
1949 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); | |
1950 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); | |
1951 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); | |
1952 | return (abi_ulong*)(iwmmxtframe + 1); | |
1953 | } | |
1954 | ||
05390248 | 1955 | static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr, |
a8c33204 PB |
1956 | struct target_ucontext_v2 *uc) |
1957 | { | |
1958 | sigset_t host_set; | |
5f9099d9 | 1959 | abi_ulong *regspace; |
a8c33204 PB |
1960 | |
1961 | target_to_host_sigset(&host_set, &uc->tuc_sigmask); | |
1c275925 | 1962 | do_sigprocmask(SIG_SETMASK, &host_set, NULL); |
a8c33204 PB |
1963 | |
1964 | if (restore_sigcontext(env, &uc->tuc_mcontext)) | |
1965 | return 1; | |
1966 | ||
5f9099d9 PM |
1967 | /* Restore coprocessor signal frame */ |
1968 | regspace = uc->tuc_regspace; | |
1969 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
1970 | regspace = restore_sigframe_v2_vfp(env, regspace); | |
1971 | if (!regspace) { | |
1972 | return 1; | |
1973 | } | |
1974 | } | |
a59d69da PM |
1975 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
1976 | regspace = restore_sigframe_v2_iwmmxt(env, regspace); | |
1977 | if (!regspace) { | |
1978 | return 1; | |
1979 | } | |
1980 | } | |
5f9099d9 | 1981 | |
a8c33204 PB |
1982 | if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) |
1983 | return 1; | |
1984 | ||
1985 | #if 0 | |
1986 | /* Send SIGTRAP if we're single-stepping */ | |
1987 | if (ptrace_cancel_bpt(current)) | |
1988 | send_sig(SIGTRAP, current, 1); | |
1989 | #endif | |
1990 | ||
1991 | return 0; | |
1992 | } | |
1993 | ||
05390248 | 1994 | static long do_sigreturn_v2(CPUARMState *env) |
a8c33204 PB |
1995 | { |
1996 | abi_ulong frame_addr; | |
978fae9f | 1997 | struct sigframe_v2 *frame = NULL; |
a8c33204 PB |
1998 | |
1999 | /* | |
2000 | * Since we stacked the signal on a 64-bit boundary, | |
2001 | * then 'sp' should be word aligned here. If it's | |
2002 | * not, then the user is trying to mess with us. | |
2003 | */ | |
a8c33204 | 2004 | frame_addr = env->regs[13]; |
c8ee0a44 | 2005 | trace_user_do_sigreturn(env, frame_addr); |
978fae9f PM |
2006 | if (frame_addr & 7) { |
2007 | goto badframe; | |
2008 | } | |
2009 | ||
a8c33204 PB |
2010 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2011 | goto badframe; | |
2012 | ||
2013 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) | |
2014 | goto badframe; | |
2015 | ||
2016 | unlock_user_struct(frame, frame_addr, 0); | |
2017 | return env->regs[0]; | |
2018 | ||
2019 | badframe: | |
2020 | unlock_user_struct(frame, frame_addr, 0); | |
66393fb9 | 2021 | force_sig(TARGET_SIGSEGV /* , current */); |
a8c33204 PB |
2022 | return 0; |
2023 | } | |
2024 | ||
05390248 | 2025 | long do_sigreturn(CPUARMState *env) |
a8c33204 PB |
2026 | { |
2027 | if (get_osversion() >= 0x020612) { | |
2028 | return do_sigreturn_v2(env); | |
2029 | } else { | |
2030 | return do_sigreturn_v1(env); | |
2031 | } | |
2032 | } | |
2033 | ||
05390248 | 2034 | static long do_rt_sigreturn_v1(CPUARMState *env) |
43fff238 | 2035 | { |
f8b0aa25 | 2036 | abi_ulong frame_addr; |
978fae9f | 2037 | struct rt_sigframe_v1 *frame = NULL; |
a745ec6d PB |
2038 | sigset_t host_set; |
2039 | ||
2040 | /* | |
2041 | * Since we stacked the signal on a 64-bit boundary, | |
2042 | * then 'sp' should be word aligned here. If it's | |
2043 | * not, then the user is trying to mess with us. | |
2044 | */ | |
a745ec6d | 2045 | frame_addr = env->regs[13]; |
c8ee0a44 | 2046 | trace_user_do_rt_sigreturn(env, frame_addr); |
978fae9f PM |
2047 | if (frame_addr & 7) { |
2048 | goto badframe; | |
2049 | } | |
2050 | ||
a745ec6d PB |
2051 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2052 | goto badframe; | |
2053 | ||
2054 | target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); | |
1c275925 | 2055 | do_sigprocmask(SIG_SETMASK, &host_set, NULL); |
a745ec6d PB |
2056 | |
2057 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) | |
2058 | goto badframe; | |
2059 | ||
2060 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) | |
2061 | goto badframe; | |
2062 | ||
2063 | #if 0 | |
2064 | /* Send SIGTRAP if we're single-stepping */ | |
2065 | if (ptrace_cancel_bpt(current)) | |
2066 | send_sig(SIGTRAP, current, 1); | |
2067 | #endif | |
2068 | unlock_user_struct(frame, frame_addr, 0); | |
2069 | return env->regs[0]; | |
2070 | ||
2071 | badframe: | |
2072 | unlock_user_struct(frame, frame_addr, 0); | |
66393fb9 | 2073 | force_sig(TARGET_SIGSEGV /* , current */); |
a745ec6d PB |
2074 | return 0; |
2075 | } | |
2076 | ||
05390248 | 2077 | static long do_rt_sigreturn_v2(CPUARMState *env) |
a745ec6d PB |
2078 | { |
2079 | abi_ulong frame_addr; | |
978fae9f | 2080 | struct rt_sigframe_v2 *frame = NULL; |
43fff238 FB |
2081 | |
2082 | /* | |
2083 | * Since we stacked the signal on a 64-bit boundary, | |
2084 | * then 'sp' should be word aligned here. If it's | |
2085 | * not, then the user is trying to mess with us. | |
2086 | */ | |
f8b0aa25 | 2087 | frame_addr = env->regs[13]; |
c8ee0a44 | 2088 | trace_user_do_rt_sigreturn(env, frame_addr); |
978fae9f PM |
2089 | if (frame_addr & 7) { |
2090 | goto badframe; | |
2091 | } | |
2092 | ||
f8b0aa25 FB |
2093 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2094 | goto badframe; | |
43fff238 | 2095 | |
a8c33204 PB |
2096 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) |
2097 | goto badframe; | |
a04e134a | 2098 | |
f8b0aa25 | 2099 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
2100 | return env->regs[0]; |
2101 | ||
2102 | badframe: | |
f8b0aa25 | 2103 | unlock_user_struct(frame, frame_addr, 0); |
66393fb9 | 2104 | force_sig(TARGET_SIGSEGV /* , current */); |
43fff238 FB |
2105 | return 0; |
2106 | } | |
2107 | ||
05390248 | 2108 | long do_rt_sigreturn(CPUARMState *env) |
a745ec6d PB |
2109 | { |
2110 | if (get_osversion() >= 0x020612) { | |
2111 | return do_rt_sigreturn_v2(env); | |
2112 | } else { | |
2113 | return do_rt_sigreturn_v1(env); | |
2114 | } | |
2115 | } | |
2116 | ||
6d5e216d | 2117 | #elif defined(TARGET_SPARC) |
80a9d035 | 2118 | |
6d5e216d FB |
2119 | #define __SUNOS_MAXWIN 31 |
2120 | ||
2121 | /* This is what SunOS does, so shall I. */ | |
2122 | struct target_sigcontext { | |
992f48a0 | 2123 | abi_ulong sigc_onstack; /* state to restore */ |
6d5e216d | 2124 | |
992f48a0 BS |
2125 | abi_ulong sigc_mask; /* sigmask to restore */ |
2126 | abi_ulong sigc_sp; /* stack pointer */ | |
2127 | abi_ulong sigc_pc; /* program counter */ | |
2128 | abi_ulong sigc_npc; /* next program counter */ | |
2129 | abi_ulong sigc_psr; /* for condition codes etc */ | |
2130 | abi_ulong sigc_g1; /* User uses these two registers */ | |
2131 | abi_ulong sigc_o0; /* within the trampoline code. */ | |
6d5e216d FB |
2132 | |
2133 | /* Now comes information regarding the users window set | |
2134 | * at the time of the signal. | |
2135 | */ | |
992f48a0 | 2136 | abi_ulong sigc_oswins; /* outstanding windows */ |
6d5e216d FB |
2137 | |
2138 | /* stack ptrs for each regwin buf */ | |
2139 | char *sigc_spbuf[__SUNOS_MAXWIN]; | |
2140 | ||
2141 | /* Windows to restore after signal */ | |
2142 | struct { | |
992f48a0 BS |
2143 | abi_ulong locals[8]; |
2144 | abi_ulong ins[8]; | |
6d5e216d FB |
2145 | } sigc_wbuf[__SUNOS_MAXWIN]; |
2146 | }; | |
2147 | /* A Sparc stack frame */ | |
2148 | struct sparc_stackf { | |
992f48a0 | 2149 | abi_ulong locals[8]; |
e321c34a PM |
2150 | abi_ulong ins[8]; |
2151 | /* It's simpler to treat fp and callers_pc as elements of ins[] | |
2152 | * since we never need to access them ourselves. | |
2153 | */ | |
6d5e216d | 2154 | char *structptr; |
992f48a0 BS |
2155 | abi_ulong xargs[6]; |
2156 | abi_ulong xxargs[1]; | |
6d5e216d FB |
2157 | }; |
2158 | ||
2159 | typedef struct { | |
2160 | struct { | |
992f48a0 BS |
2161 | abi_ulong psr; |
2162 | abi_ulong pc; | |
2163 | abi_ulong npc; | |
2164 | abi_ulong y; | |
2165 | abi_ulong u_regs[16]; /* globals and ins */ | |
6d5e216d FB |
2166 | } si_regs; |
2167 | int si_mask; | |
2168 | } __siginfo_t; | |
2169 | ||
2170 | typedef struct { | |
8954bae3 | 2171 | abi_ulong si_float_regs[32]; |
6d5e216d FB |
2172 | unsigned long si_fsr; |
2173 | unsigned long si_fpqdepth; | |
2174 | struct { | |
2175 | unsigned long *insn_addr; | |
2176 | unsigned long insn; | |
2177 | } si_fpqueue [16]; | |
c227f099 | 2178 | } qemu_siginfo_fpu_t; |
6d5e216d FB |
2179 | |
2180 | ||
2181 | struct target_signal_frame { | |
2182 | struct sparc_stackf ss; | |
2183 | __siginfo_t info; | |
f8b0aa25 | 2184 | abi_ulong fpu_save; |
992f48a0 BS |
2185 | abi_ulong insns[2] __attribute__ ((aligned (8))); |
2186 | abi_ulong extramask[TARGET_NSIG_WORDS - 1]; | |
2187 | abi_ulong extra_size; /* Should be 0 */ | |
c227f099 | 2188 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
2189 | }; |
2190 | struct target_rt_signal_frame { | |
2191 | struct sparc_stackf ss; | |
2192 | siginfo_t info; | |
992f48a0 | 2193 | abi_ulong regs[20]; |
6d5e216d | 2194 | sigset_t mask; |
f8b0aa25 | 2195 | abi_ulong fpu_save; |
6d5e216d FB |
2196 | unsigned int insns[2]; |
2197 | stack_t stack; | |
2198 | unsigned int extra_size; /* Should be 0 */ | |
c227f099 | 2199 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
2200 | }; |
2201 | ||
e80cfcfc FB |
2202 | #define UREG_O0 16 |
2203 | #define UREG_O6 22 | |
2204 | #define UREG_I0 0 | |
2205 | #define UREG_I1 1 | |
2206 | #define UREG_I2 2 | |
5bfb56b2 BS |
2207 | #define UREG_I3 3 |
2208 | #define UREG_I4 4 | |
2209 | #define UREG_I5 5 | |
e80cfcfc FB |
2210 | #define UREG_I6 6 |
2211 | #define UREG_I7 7 | |
2212 | #define UREG_L0 8 | |
6d5e216d FB |
2213 | #define UREG_FP UREG_I6 |
2214 | #define UREG_SP UREG_O6 | |
2215 | ||
624f7979 | 2216 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, |
05390248 AF |
2217 | CPUSPARCState *env, |
2218 | unsigned long framesize) | |
6d5e216d | 2219 | { |
459a4017 | 2220 | abi_ulong sp; |
6d5e216d FB |
2221 | |
2222 | sp = env->regwptr[UREG_FP]; | |
6d5e216d FB |
2223 | |
2224 | /* This is the X/Open sanctioned signal stack switching. */ | |
624f7979 | 2225 | if (sa->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
2226 | if (!on_sig_stack(sp) |
2227 | && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7)) | |
2228 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
6d5e216d | 2229 | } |
459a4017 | 2230 | return sp - framesize; |
6d5e216d FB |
2231 | } |
2232 | ||
2233 | static int | |
05390248 | 2234 | setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask) |
6d5e216d FB |
2235 | { |
2236 | int err = 0, i; | |
2237 | ||
1d8b512b RV |
2238 | __put_user(env->psr, &si->si_regs.psr); |
2239 | __put_user(env->pc, &si->si_regs.pc); | |
2240 | __put_user(env->npc, &si->si_regs.npc); | |
2241 | __put_user(env->y, &si->si_regs.y); | |
a315a145 | 2242 | for (i=0; i < 8; i++) { |
1d8b512b | 2243 | __put_user(env->gregs[i], &si->si_regs.u_regs[i]); |
6d5e216d | 2244 | } |
a315a145 | 2245 | for (i=0; i < 8; i++) { |
1d8b512b | 2246 | __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]); |
6d5e216d | 2247 | } |
1d8b512b | 2248 | __put_user(mask, &si->si_mask); |
6d5e216d FB |
2249 | return err; |
2250 | } | |
e80cfcfc | 2251 | |
80a9d035 | 2252 | #if 0 |
6d5e216d FB |
2253 | static int |
2254 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ | |
05390248 | 2255 | CPUSPARCState *env, unsigned long mask) |
6d5e216d FB |
2256 | { |
2257 | int err = 0; | |
2258 | ||
1d8b512b RV |
2259 | __put_user(mask, &sc->sigc_mask); |
2260 | __put_user(env->regwptr[UREG_SP], &sc->sigc_sp); | |
2261 | __put_user(env->pc, &sc->sigc_pc); | |
2262 | __put_user(env->npc, &sc->sigc_npc); | |
2263 | __put_user(env->psr, &sc->sigc_psr); | |
2264 | __put_user(env->gregs[1], &sc->sigc_g1); | |
2265 | __put_user(env->regwptr[UREG_O0], &sc->sigc_o0); | |
6d5e216d FB |
2266 | |
2267 | return err; | |
2268 | } | |
80a9d035 | 2269 | #endif |
6d5e216d FB |
2270 | #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7))) |
2271 | ||
624f7979 | 2272 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 2273 | target_sigset_t *set, CPUSPARCState *env) |
6d5e216d | 2274 | { |
459a4017 | 2275 | abi_ulong sf_addr; |
6d5e216d FB |
2276 | struct target_signal_frame *sf; |
2277 | int sigframe_size, err, i; | |
2278 | ||
2279 | /* 1. Make sure everything is clean */ | |
2280 | //synchronize_user_stack(); | |
2281 | ||
2282 | sigframe_size = NF_ALIGNEDSZ; | |
459a4017 | 2283 | sf_addr = get_sigframe(ka, env, sigframe_size); |
c8ee0a44 | 2284 | trace_user_setup_frame(env, sf_addr); |
6d5e216d | 2285 | |
459a4017 FB |
2286 | sf = lock_user(VERIFY_WRITE, sf_addr, |
2287 | sizeof(struct target_signal_frame), 0); | |
2288 | if (!sf) | |
2289 | goto sigsegv; | |
2290 | ||
6d5e216d FB |
2291 | #if 0 |
2292 | if (invalid_frame_pointer(sf, sigframe_size)) | |
2293 | goto sigill_and_return; | |
2294 | #endif | |
2295 | /* 2. Save the current process state */ | |
2296 | err = setup___siginfo(&sf->info, env, set->sig[0]); | |
1d8b512b | 2297 | __put_user(0, &sf->extra_size); |
6d5e216d | 2298 | |
1d8b512b RV |
2299 | //save_fpu_state(regs, &sf->fpu_state); |
2300 | //__put_user(&sf->fpu_state, &sf->fpu_save); | |
6d5e216d | 2301 | |
1d8b512b | 2302 | __put_user(set->sig[0], &sf->info.si_mask); |
6d5e216d | 2303 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { |
1d8b512b | 2304 | __put_user(set->sig[i + 1], &sf->extramask[i]); |
6d5e216d FB |
2305 | } |
2306 | ||
a315a145 | 2307 | for (i = 0; i < 8; i++) { |
1d8b512b | 2308 | __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]); |
6d5e216d | 2309 | } |
a315a145 | 2310 | for (i = 0; i < 8; i++) { |
1d8b512b | 2311 | __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]); |
6d5e216d | 2312 | } |
6d5e216d FB |
2313 | if (err) |
2314 | goto sigsegv; | |
2315 | ||
2316 | /* 3. signal handler back-trampoline and parameters */ | |
459a4017 | 2317 | env->regwptr[UREG_FP] = sf_addr; |
6d5e216d | 2318 | env->regwptr[UREG_I0] = sig; |
459a4017 FB |
2319 | env->regwptr[UREG_I1] = sf_addr + |
2320 | offsetof(struct target_signal_frame, info); | |
2321 | env->regwptr[UREG_I2] = sf_addr + | |
2322 | offsetof(struct target_signal_frame, info); | |
6d5e216d FB |
2323 | |
2324 | /* 4. signal handler */ | |
624f7979 | 2325 | env->pc = ka->_sa_handler; |
6d5e216d FB |
2326 | env->npc = (env->pc + 4); |
2327 | /* 5. return to kernel instructions */ | |
624f7979 PB |
2328 | if (ka->sa_restorer) |
2329 | env->regwptr[UREG_I7] = ka->sa_restorer; | |
6d5e216d | 2330 | else { |
775b58d8 | 2331 | uint32_t val32; |
459a4017 FB |
2332 | |
2333 | env->regwptr[UREG_I7] = sf_addr + | |
2334 | offsetof(struct target_signal_frame, insns) - 2 * 4; | |
6d5e216d FB |
2335 | |
2336 | /* mov __NR_sigreturn, %g1 */ | |
775b58d8 | 2337 | val32 = 0x821020d8; |
1d8b512b | 2338 | __put_user(val32, &sf->insns[0]); |
6d5e216d FB |
2339 | |
2340 | /* t 0x10 */ | |
775b58d8 | 2341 | val32 = 0x91d02010; |
1d8b512b | 2342 | __put_user(val32, &sf->insns[1]); |
6d5e216d FB |
2343 | if (err) |
2344 | goto sigsegv; | |
2345 | ||
2346 | /* Flush instruction space. */ | |
2347 | //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0])); | |
bbd77c18 | 2348 | // tb_flush(CPU(sparc_env_get_cpu(env))); |
6d5e216d | 2349 | } |
459a4017 | 2350 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d | 2351 | return; |
459a4017 FB |
2352 | #if 0 |
2353 | sigill_and_return: | |
6d5e216d | 2354 | force_sig(TARGET_SIGILL); |
459a4017 | 2355 | #endif |
6d5e216d | 2356 | sigsegv: |
459a4017 | 2357 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d FB |
2358 | force_sig(TARGET_SIGSEGV); |
2359 | } | |
6d5e216d | 2360 | |
624f7979 | 2361 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 2362 | target_siginfo_t *info, |
05390248 | 2363 | target_sigset_t *set, CPUSPARCState *env) |
6d5e216d FB |
2364 | { |
2365 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2366 | } | |
2367 | ||
05390248 | 2368 | long do_sigreturn(CPUSPARCState *env) |
6d5e216d | 2369 | { |
f8b0aa25 | 2370 | abi_ulong sf_addr; |
6d5e216d | 2371 | struct target_signal_frame *sf; |
e80cfcfc | 2372 | uint32_t up_psr, pc, npc; |
c227f099 | 2373 | target_sigset_t set; |
e80cfcfc | 2374 | sigset_t host_set; |
1d8b512b | 2375 | int err=0, i; |
6d5e216d | 2376 | |
f8b0aa25 | 2377 | sf_addr = env->regwptr[UREG_FP]; |
c8ee0a44 | 2378 | trace_user_do_sigreturn(env, sf_addr); |
f8b0aa25 FB |
2379 | if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) |
2380 | goto segv_and_exit; | |
6d5e216d FB |
2381 | |
2382 | /* 1. Make sure we are not getting garbage from the user */ | |
6d5e216d | 2383 | |
f8b0aa25 | 2384 | if (sf_addr & 3) |
6d5e216d FB |
2385 | goto segv_and_exit; |
2386 | ||
1d8b512b RV |
2387 | __get_user(pc, &sf->info.si_regs.pc); |
2388 | __get_user(npc, &sf->info.si_regs.npc); | |
6d5e216d | 2389 | |
6d5e216d FB |
2390 | if ((pc | npc) & 3) |
2391 | goto segv_and_exit; | |
2392 | ||
2393 | /* 2. Restore the state */ | |
1d8b512b | 2394 | __get_user(up_psr, &sf->info.si_regs.psr); |
e80cfcfc | 2395 | |
6d5e216d | 2396 | /* User can only change condition codes and FPU enabling in %psr. */ |
a315a145 FB |
2397 | env->psr = (up_psr & (PSR_ICC /* | PSR_EF */)) |
2398 | | (env->psr & ~(PSR_ICC /* | PSR_EF */)); | |
2399 | ||
2400 | env->pc = pc; | |
2401 | env->npc = npc; | |
1d8b512b | 2402 | __get_user(env->y, &sf->info.si_regs.y); |
a315a145 | 2403 | for (i=0; i < 8; i++) { |
1d8b512b | 2404 | __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]); |
e80cfcfc | 2405 | } |
a315a145 | 2406 | for (i=0; i < 8; i++) { |
1d8b512b | 2407 | __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]); |
e80cfcfc | 2408 | } |
6d5e216d | 2409 | |
2aec3a27 PM |
2410 | /* FIXME: implement FPU save/restore: |
2411 | * __get_user(fpu_save, &sf->fpu_save); | |
2412 | * if (fpu_save) | |
2413 | * err |= restore_fpu_state(env, fpu_save); | |
2414 | */ | |
6d5e216d FB |
2415 | |
2416 | /* This is pretty much atomic, no amount locking would prevent | |
2417 | * the races which exist anyways. | |
2418 | */ | |
1d8b512b | 2419 | __get_user(set.sig[0], &sf->info.si_mask); |
e80cfcfc | 2420 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1d8b512b | 2421 | __get_user(set.sig[i], &sf->extramask[i - 1]); |
e80cfcfc FB |
2422 | } |
2423 | ||
2424 | target_to_host_sigset_internal(&host_set, &set); | |
1c275925 | 2425 | do_sigprocmask(SIG_SETMASK, &host_set, NULL); |
6d5e216d FB |
2426 | |
2427 | if (err) | |
2428 | goto segv_and_exit; | |
f8b0aa25 | 2429 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
2430 | return env->regwptr[0]; |
2431 | ||
2432 | segv_and_exit: | |
f8b0aa25 | 2433 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
2434 | force_sig(TARGET_SIGSEGV); |
2435 | } | |
2436 | ||
05390248 | 2437 | long do_rt_sigreturn(CPUSPARCState *env) |
6d5e216d | 2438 | { |
c8ee0a44 | 2439 | trace_user_do_rt_sigreturn(env, 0); |
6d5e216d | 2440 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); |
f8b0aa25 | 2441 | return -TARGET_ENOSYS; |
6d5e216d FB |
2442 | } |
2443 | ||
459a4017 | 2444 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) |
5bfb56b2 BS |
2445 | #define MC_TSTATE 0 |
2446 | #define MC_PC 1 | |
2447 | #define MC_NPC 2 | |
2448 | #define MC_Y 3 | |
2449 | #define MC_G1 4 | |
2450 | #define MC_G2 5 | |
2451 | #define MC_G3 6 | |
2452 | #define MC_G4 7 | |
2453 | #define MC_G5 8 | |
2454 | #define MC_G6 9 | |
2455 | #define MC_G7 10 | |
2456 | #define MC_O0 11 | |
2457 | #define MC_O1 12 | |
2458 | #define MC_O2 13 | |
2459 | #define MC_O3 14 | |
2460 | #define MC_O4 15 | |
2461 | #define MC_O5 16 | |
2462 | #define MC_O6 17 | |
2463 | #define MC_O7 18 | |
2464 | #define MC_NGREG 19 | |
2465 | ||
c227f099 AL |
2466 | typedef abi_ulong target_mc_greg_t; |
2467 | typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG]; | |
5bfb56b2 BS |
2468 | |
2469 | struct target_mc_fq { | |
992f48a0 | 2470 | abi_ulong *mcfq_addr; |
5bfb56b2 BS |
2471 | uint32_t mcfq_insn; |
2472 | }; | |
2473 | ||
2474 | struct target_mc_fpu { | |
2475 | union { | |
2476 | uint32_t sregs[32]; | |
2477 | uint64_t dregs[32]; | |
2478 | //uint128_t qregs[16]; | |
2479 | } mcfpu_fregs; | |
992f48a0 BS |
2480 | abi_ulong mcfpu_fsr; |
2481 | abi_ulong mcfpu_fprs; | |
2482 | abi_ulong mcfpu_gsr; | |
5bfb56b2 BS |
2483 | struct target_mc_fq *mcfpu_fq; |
2484 | unsigned char mcfpu_qcnt; | |
2485 | unsigned char mcfpu_qentsz; | |
2486 | unsigned char mcfpu_enab; | |
2487 | }; | |
c227f099 | 2488 | typedef struct target_mc_fpu target_mc_fpu_t; |
5bfb56b2 BS |
2489 | |
2490 | typedef struct { | |
c227f099 AL |
2491 | target_mc_gregset_t mc_gregs; |
2492 | target_mc_greg_t mc_fp; | |
2493 | target_mc_greg_t mc_i7; | |
2494 | target_mc_fpu_t mc_fpregs; | |
2495 | } target_mcontext_t; | |
5bfb56b2 BS |
2496 | |
2497 | struct target_ucontext { | |
60e99246 AJ |
2498 | struct target_ucontext *tuc_link; |
2499 | abi_ulong tuc_flags; | |
2500 | target_sigset_t tuc_sigmask; | |
2501 | target_mcontext_t tuc_mcontext; | |
5bfb56b2 BS |
2502 | }; |
2503 | ||
2504 | /* A V9 register window */ | |
2505 | struct target_reg_window { | |
992f48a0 BS |
2506 | abi_ulong locals[8]; |
2507 | abi_ulong ins[8]; | |
5bfb56b2 BS |
2508 | }; |
2509 | ||
2510 | #define TARGET_STACK_BIAS 2047 | |
2511 | ||
2512 | /* {set, get}context() needed for 64-bit SparcLinux userland. */ | |
2513 | void sparc64_set_context(CPUSPARCState *env) | |
2514 | { | |
459a4017 FB |
2515 | abi_ulong ucp_addr; |
2516 | struct target_ucontext *ucp; | |
c227f099 | 2517 | target_mc_gregset_t *grp; |
992f48a0 | 2518 | abi_ulong pc, npc, tstate; |
459a4017 | 2519 | abi_ulong fp, i7, w_addr; |
5bfb56b2 | 2520 | unsigned int i; |
5bfb56b2 | 2521 | |
459a4017 FB |
2522 | ucp_addr = env->regwptr[UREG_I0]; |
2523 | if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) | |
2524 | goto do_sigsegv; | |
60e99246 | 2525 | grp = &ucp->tuc_mcontext.mc_gregs; |
1d8b512b RV |
2526 | __get_user(pc, &((*grp)[MC_PC])); |
2527 | __get_user(npc, &((*grp)[MC_NPC])); | |
be3ef5c7 | 2528 | if ((pc | npc) & 3) |
5bfb56b2 BS |
2529 | goto do_sigsegv; |
2530 | if (env->regwptr[UREG_I1]) { | |
c227f099 | 2531 | target_sigset_t target_set; |
5bfb56b2 BS |
2532 | sigset_t set; |
2533 | ||
2534 | if (TARGET_NSIG_WORDS == 1) { | |
be3ef5c7 | 2535 | __get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0]); |
5bfb56b2 | 2536 | } else { |
459a4017 | 2537 | abi_ulong *src, *dst; |
60e99246 | 2538 | src = ucp->tuc_sigmask.sig; |
459a4017 | 2539 | dst = target_set.sig; |
0d9e61c2 | 2540 | for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) { |
1d8b512b | 2541 | __get_user(*dst, src); |
0d9e61c2 | 2542 | } |
5bfb56b2 BS |
2543 | } |
2544 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 2545 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
5bfb56b2 BS |
2546 | } |
2547 | env->pc = pc; | |
2548 | env->npc = npc; | |
1d8b512b RV |
2549 | __get_user(env->y, &((*grp)[MC_Y])); |
2550 | __get_user(tstate, &((*grp)[MC_TSTATE])); | |
5bfb56b2 | 2551 | env->asi = (tstate >> 24) & 0xff; |
5a834bb4 BS |
2552 | cpu_put_ccr(env, tstate >> 32); |
2553 | cpu_put_cwp64(env, tstate & 0x1f); | |
1d8b512b RV |
2554 | __get_user(env->gregs[1], (&(*grp)[MC_G1])); |
2555 | __get_user(env->gregs[2], (&(*grp)[MC_G2])); | |
2556 | __get_user(env->gregs[3], (&(*grp)[MC_G3])); | |
2557 | __get_user(env->gregs[4], (&(*grp)[MC_G4])); | |
2558 | __get_user(env->gregs[5], (&(*grp)[MC_G5])); | |
2559 | __get_user(env->gregs[6], (&(*grp)[MC_G6])); | |
2560 | __get_user(env->gregs[7], (&(*grp)[MC_G7])); | |
2561 | __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0])); | |
2562 | __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1])); | |
2563 | __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2])); | |
2564 | __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3])); | |
2565 | __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4])); | |
2566 | __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5])); | |
2567 | __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6])); | |
2568 | __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7])); | |
2569 | ||
2570 | __get_user(fp, &(ucp->tuc_mcontext.mc_fp)); | |
2571 | __get_user(i7, &(ucp->tuc_mcontext.mc_i7)); | |
579a97f7 | 2572 | |
459a4017 FB |
2573 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2574 | if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2575 | abi_ulong) != 0) | |
2576 | goto do_sigsegv; | |
2577 | if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2578 | abi_ulong) != 0) | |
2579 | goto do_sigsegv; | |
c7b016ba PM |
2580 | /* FIXME this does not match how the kernel handles the FPU in |
2581 | * its sparc64_set_context implementation. In particular the FPU | |
2582 | * is only restored if fenab is non-zero in: | |
2583 | * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab)); | |
2584 | */ | |
be3ef5c7 | 2585 | __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs)); |
459a4017 | 2586 | { |
30038fd8 RH |
2587 | uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
2588 | for (i = 0; i < 64; i++, src++) { | |
2589 | if (i & 1) { | |
1d8b512b | 2590 | __get_user(env->fpr[i/2].l.lower, src); |
30038fd8 | 2591 | } else { |
1d8b512b | 2592 | __get_user(env->fpr[i/2].l.upper, src); |
30038fd8 RH |
2593 | } |
2594 | } | |
459a4017 | 2595 | } |
1d8b512b RV |
2596 | __get_user(env->fsr, |
2597 | &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr)); | |
2598 | __get_user(env->gsr, | |
2599 | &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr)); | |
459a4017 | 2600 | unlock_user_struct(ucp, ucp_addr, 0); |
5bfb56b2 BS |
2601 | return; |
2602 | do_sigsegv: | |
459a4017 | 2603 | unlock_user_struct(ucp, ucp_addr, 0); |
66393fb9 | 2604 | force_sig(TARGET_SIGSEGV); |
5bfb56b2 BS |
2605 | } |
2606 | ||
2607 | void sparc64_get_context(CPUSPARCState *env) | |
2608 | { | |
459a4017 FB |
2609 | abi_ulong ucp_addr; |
2610 | struct target_ucontext *ucp; | |
c227f099 AL |
2611 | target_mc_gregset_t *grp; |
2612 | target_mcontext_t *mcp; | |
459a4017 | 2613 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2614 | int err; |
2615 | unsigned int i; | |
c227f099 | 2616 | target_sigset_t target_set; |
5bfb56b2 BS |
2617 | sigset_t set; |
2618 | ||
459a4017 FB |
2619 | ucp_addr = env->regwptr[UREG_I0]; |
2620 | if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) | |
2621 | goto do_sigsegv; | |
2622 | ||
60e99246 | 2623 | mcp = &ucp->tuc_mcontext; |
5bfb56b2 BS |
2624 | grp = &mcp->mc_gregs; |
2625 | ||
2626 | /* Skip over the trap instruction, first. */ | |
2627 | env->pc = env->npc; | |
2628 | env->npc += 4; | |
2629 | ||
2630 | err = 0; | |
2631 | ||
1c275925 | 2632 | do_sigprocmask(0, NULL, &set); |
5bfb56b2 | 2633 | host_to_target_sigset_internal(&target_set, &set); |
459a4017 | 2634 | if (TARGET_NSIG_WORDS == 1) { |
1d8b512b RV |
2635 | __put_user(target_set.sig[0], |
2636 | (abi_ulong *)&ucp->tuc_sigmask); | |
459a4017 FB |
2637 | } else { |
2638 | abi_ulong *src, *dst; | |
2639 | src = target_set.sig; | |
60e99246 | 2640 | dst = ucp->tuc_sigmask.sig; |
0d9e61c2 | 2641 | for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) { |
1d8b512b | 2642 | __put_user(*src, dst); |
0d9e61c2 | 2643 | } |
5bfb56b2 BS |
2644 | if (err) |
2645 | goto do_sigsegv; | |
2646 | } | |
2647 | ||
459a4017 | 2648 | /* XXX: tstate must be saved properly */ |
1d8b512b RV |
2649 | // __put_user(env->tstate, &((*grp)[MC_TSTATE])); |
2650 | __put_user(env->pc, &((*grp)[MC_PC])); | |
2651 | __put_user(env->npc, &((*grp)[MC_NPC])); | |
2652 | __put_user(env->y, &((*grp)[MC_Y])); | |
2653 | __put_user(env->gregs[1], &((*grp)[MC_G1])); | |
2654 | __put_user(env->gregs[2], &((*grp)[MC_G2])); | |
2655 | __put_user(env->gregs[3], &((*grp)[MC_G3])); | |
2656 | __put_user(env->gregs[4], &((*grp)[MC_G4])); | |
2657 | __put_user(env->gregs[5], &((*grp)[MC_G5])); | |
2658 | __put_user(env->gregs[6], &((*grp)[MC_G6])); | |
2659 | __put_user(env->gregs[7], &((*grp)[MC_G7])); | |
2660 | __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0])); | |
2661 | __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1])); | |
2662 | __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2])); | |
2663 | __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3])); | |
2664 | __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4])); | |
2665 | __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5])); | |
2666 | __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6])); | |
2667 | __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7])); | |
579a97f7 | 2668 | |
459a4017 FB |
2669 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2670 | fp = i7 = 0; | |
2671 | if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2672 | abi_ulong) != 0) | |
2673 | goto do_sigsegv; | |
2674 | if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2675 | abi_ulong) != 0) | |
2676 | goto do_sigsegv; | |
1d8b512b RV |
2677 | __put_user(fp, &(mcp->mc_fp)); |
2678 | __put_user(i7, &(mcp->mc_i7)); | |
5bfb56b2 | 2679 | |
459a4017 | 2680 | { |
30038fd8 RH |
2681 | uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
2682 | for (i = 0; i < 64; i++, dst++) { | |
2683 | if (i & 1) { | |
1d8b512b | 2684 | __put_user(env->fpr[i/2].l.lower, dst); |
30038fd8 | 2685 | } else { |
1d8b512b | 2686 | __put_user(env->fpr[i/2].l.upper, dst); |
30038fd8 RH |
2687 | } |
2688 | } | |
459a4017 | 2689 | } |
1d8b512b RV |
2690 | __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); |
2691 | __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); | |
2692 | __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs)); | |
5bfb56b2 BS |
2693 | |
2694 | if (err) | |
2695 | goto do_sigsegv; | |
459a4017 | 2696 | unlock_user_struct(ucp, ucp_addr, 1); |
5bfb56b2 BS |
2697 | return; |
2698 | do_sigsegv: | |
459a4017 | 2699 | unlock_user_struct(ucp, ucp_addr, 1); |
66393fb9 | 2700 | force_sig(TARGET_SIGSEGV); |
5bfb56b2 BS |
2701 | } |
2702 | #endif | |
ff970904 | 2703 | #elif defined(TARGET_MIPS) || defined(TARGET_MIPS64) |
106ec879 | 2704 | |
ff970904 | 2705 | # if defined(TARGET_ABI_MIPSO32) |
106ec879 FB |
2706 | struct target_sigcontext { |
2707 | uint32_t sc_regmask; /* Unused */ | |
2708 | uint32_t sc_status; | |
2709 | uint64_t sc_pc; | |
2710 | uint64_t sc_regs[32]; | |
2711 | uint64_t sc_fpregs[32]; | |
2712 | uint32_t sc_ownedfp; /* Unused */ | |
2713 | uint32_t sc_fpc_csr; | |
2714 | uint32_t sc_fpc_eir; /* Unused */ | |
2715 | uint32_t sc_used_math; | |
2716 | uint32_t sc_dsp; /* dsp status, was sc_ssflags */ | |
94c5495d | 2717 | uint32_t pad0; |
106ec879 FB |
2718 | uint64_t sc_mdhi; |
2719 | uint64_t sc_mdlo; | |
2720 | target_ulong sc_hi1; /* Was sc_cause */ | |
2721 | target_ulong sc_lo1; /* Was sc_badvaddr */ | |
2722 | target_ulong sc_hi2; /* Was sc_sigset[4] */ | |
2723 | target_ulong sc_lo2; | |
2724 | target_ulong sc_hi3; | |
2725 | target_ulong sc_lo3; | |
2726 | }; | |
ff970904 RH |
2727 | # else /* N32 || N64 */ |
2728 | struct target_sigcontext { | |
2729 | uint64_t sc_regs[32]; | |
2730 | uint64_t sc_fpregs[32]; | |
2731 | uint64_t sc_mdhi; | |
2732 | uint64_t sc_hi1; | |
2733 | uint64_t sc_hi2; | |
2734 | uint64_t sc_hi3; | |
2735 | uint64_t sc_mdlo; | |
2736 | uint64_t sc_lo1; | |
2737 | uint64_t sc_lo2; | |
2738 | uint64_t sc_lo3; | |
2739 | uint64_t sc_pc; | |
2740 | uint32_t sc_fpc_csr; | |
2741 | uint32_t sc_used_math; | |
2742 | uint32_t sc_dsp; | |
2743 | uint32_t sc_reserved; | |
2744 | }; | |
2745 | # endif /* O32 */ | |
106ec879 FB |
2746 | |
2747 | struct sigframe { | |
2748 | uint32_t sf_ass[4]; /* argument save space for o32 */ | |
2749 | uint32_t sf_code[2]; /* signal trampoline */ | |
2750 | struct target_sigcontext sf_sc; | |
c227f099 | 2751 | target_sigset_t sf_mask; |
106ec879 FB |
2752 | }; |
2753 | ||
0b1bcb00 | 2754 | struct target_ucontext { |
60e99246 AJ |
2755 | target_ulong tuc_flags; |
2756 | target_ulong tuc_link; | |
2757 | target_stack_t tuc_stack; | |
94c5495d | 2758 | target_ulong pad0; |
60e99246 AJ |
2759 | struct target_sigcontext tuc_mcontext; |
2760 | target_sigset_t tuc_sigmask; | |
0b1bcb00 PB |
2761 | }; |
2762 | ||
2763 | struct target_rt_sigframe { | |
2764 | uint32_t rs_ass[4]; /* argument save space for o32 */ | |
2765 | uint32_t rs_code[2]; /* signal trampoline */ | |
2766 | struct target_siginfo rs_info; | |
2767 | struct target_ucontext rs_uc; | |
2768 | }; | |
2769 | ||
106ec879 FB |
2770 | /* Install trampoline to jump back from signal handler */ |
2771 | static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall) | |
2772 | { | |
084d0497 | 2773 | int err = 0; |
106ec879 FB |
2774 | |
2775 | /* | |
084d0497 RH |
2776 | * Set up the return code ... |
2777 | * | |
2778 | * li v0, __NR__foo_sigreturn | |
2779 | * syscall | |
2780 | */ | |
106ec879 | 2781 | |
1d8b512b RV |
2782 | __put_user(0x24020000 + syscall, tramp + 0); |
2783 | __put_user(0x0000000c , tramp + 1); | |
106ec879 FB |
2784 | return err; |
2785 | } | |
2786 | ||
41ecc72b RV |
2787 | static inline void setup_sigcontext(CPUMIPSState *regs, |
2788 | struct target_sigcontext *sc) | |
106ec879 | 2789 | { |
084d0497 | 2790 | int i; |
106ec879 | 2791 | |
1d8b512b | 2792 | __put_user(exception_resume_pc(regs), &sc->sc_pc); |
1239b472 | 2793 | regs->hflags &= ~MIPS_HFLAG_BMASK; |
106ec879 | 2794 | |
084d0497 RH |
2795 | __put_user(0, &sc->sc_regs[0]); |
2796 | for (i = 1; i < 32; ++i) { | |
1d8b512b | 2797 | __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); |
084d0497 | 2798 | } |
106ec879 | 2799 | |
1d8b512b RV |
2800 | __put_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2801 | __put_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2802 | |
084d0497 RH |
2803 | /* Rather than checking for dsp existence, always copy. The storage |
2804 | would just be garbage otherwise. */ | |
1d8b512b RV |
2805 | __put_user(regs->active_tc.HI[1], &sc->sc_hi1); |
2806 | __put_user(regs->active_tc.HI[2], &sc->sc_hi2); | |
2807 | __put_user(regs->active_tc.HI[3], &sc->sc_hi3); | |
2808 | __put_user(regs->active_tc.LO[1], &sc->sc_lo1); | |
2809 | __put_user(regs->active_tc.LO[2], &sc->sc_lo2); | |
2810 | __put_user(regs->active_tc.LO[3], &sc->sc_lo3); | |
084d0497 RH |
2811 | { |
2812 | uint32_t dsp = cpu_rddsp(0x3ff, regs); | |
1d8b512b | 2813 | __put_user(dsp, &sc->sc_dsp); |
106ec879 | 2814 | } |
106ec879 | 2815 | |
1d8b512b | 2816 | __put_user(1, &sc->sc_used_math); |
106ec879 | 2817 | |
084d0497 | 2818 | for (i = 0; i < 32; ++i) { |
1d8b512b | 2819 | __put_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]); |
106ec879 | 2820 | } |
106ec879 FB |
2821 | } |
2822 | ||
016d2e1d | 2823 | static inline void |
05390248 | 2824 | restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc) |
106ec879 | 2825 | { |
084d0497 | 2826 | int i; |
106ec879 | 2827 | |
1d8b512b | 2828 | __get_user(regs->CP0_EPC, &sc->sc_pc); |
106ec879 | 2829 | |
1d8b512b RV |
2830 | __get_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2831 | __get_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2832 | |
084d0497 | 2833 | for (i = 1; i < 32; ++i) { |
1d8b512b | 2834 | __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); |
106ec879 | 2835 | } |
106ec879 | 2836 | |
1d8b512b RV |
2837 | __get_user(regs->active_tc.HI[1], &sc->sc_hi1); |
2838 | __get_user(regs->active_tc.HI[2], &sc->sc_hi2); | |
2839 | __get_user(regs->active_tc.HI[3], &sc->sc_hi3); | |
2840 | __get_user(regs->active_tc.LO[1], &sc->sc_lo1); | |
2841 | __get_user(regs->active_tc.LO[2], &sc->sc_lo2); | |
2842 | __get_user(regs->active_tc.LO[3], &sc->sc_lo3); | |
084d0497 RH |
2843 | { |
2844 | uint32_t dsp; | |
1d8b512b | 2845 | __get_user(dsp, &sc->sc_dsp); |
084d0497 RH |
2846 | cpu_wrdsp(dsp, 0x3ff, regs); |
2847 | } | |
106ec879 | 2848 | |
084d0497 | 2849 | for (i = 0; i < 32; ++i) { |
1d8b512b | 2850 | __get_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]); |
106ec879 | 2851 | } |
106ec879 | 2852 | } |
ff970904 | 2853 | |
106ec879 FB |
2854 | /* |
2855 | * Determine which stack to use.. | |
2856 | */ | |
579a97f7 | 2857 | static inline abi_ulong |
05390248 | 2858 | get_sigframe(struct target_sigaction *ka, CPUMIPSState *regs, size_t frame_size) |
106ec879 FB |
2859 | { |
2860 | unsigned long sp; | |
2861 | ||
2862 | /* Default to using normal stack */ | |
b5dc7732 | 2863 | sp = regs->active_tc.gpr[29]; |
106ec879 FB |
2864 | |
2865 | /* | |
93148aa5 | 2866 | * FPU emulator may have its own trampoline active just |
106ec879 FB |
2867 | * above the user stack, 16-bytes before the next lowest |
2868 | * 16 byte boundary. Try to avoid trashing it. | |
2869 | */ | |
2870 | sp -= 32; | |
2871 | ||
106ec879 | 2872 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 2873 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { |
a04e134a TS |
2874 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2875 | } | |
106ec879 | 2876 | |
579a97f7 | 2877 | return (sp - frame_size) & ~7; |
106ec879 FB |
2878 | } |
2879 | ||
ea3164aa KCY |
2880 | static void mips_set_hflags_isa_mode_from_pc(CPUMIPSState *env) |
2881 | { | |
2882 | if (env->insn_flags & (ASE_MIPS16 | ASE_MICROMIPS)) { | |
2883 | env->hflags &= ~MIPS_HFLAG_M16; | |
2884 | env->hflags |= (env->active_tc.PC & 1) << MIPS_HFLAG_M16_SHIFT; | |
2885 | env->active_tc.PC &= ~(target_ulong) 1; | |
2886 | } | |
2887 | } | |
2888 | ||
ff970904 | 2889 | # if defined(TARGET_ABI_MIPSO32) |
579a97f7 | 2890 | /* compare linux/arch/mips/kernel/signal.c:setup_frame() */ |
624f7979 | 2891 | static void setup_frame(int sig, struct target_sigaction * ka, |
05390248 | 2892 | target_sigset_t *set, CPUMIPSState *regs) |
106ec879 FB |
2893 | { |
2894 | struct sigframe *frame; | |
579a97f7 | 2895 | abi_ulong frame_addr; |
106ec879 FB |
2896 | int i; |
2897 | ||
579a97f7 | 2898 | frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
c8ee0a44 | 2899 | trace_user_setup_frame(regs, frame_addr); |
579a97f7 | 2900 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
106ec879 FB |
2901 | goto give_sigsegv; |
2902 | ||
2903 | install_sigtramp(frame->sf_code, TARGET_NR_sigreturn); | |
2904 | ||
41ecc72b | 2905 | setup_sigcontext(regs, &frame->sf_sc); |
106ec879 FB |
2906 | |
2907 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
0188fadb | 2908 | __put_user(set->sig[i], &frame->sf_mask.sig[i]); |
106ec879 FB |
2909 | } |
2910 | ||
2911 | /* | |
2912 | * Arguments to signal handler: | |
2913 | * | |
2914 | * a0 = signal number | |
2915 | * a1 = 0 (should be cause) | |
2916 | * a2 = pointer to struct sigcontext | |
2917 | * | |
2918 | * $25 and PC point to the signal handler, $29 points to the | |
2919 | * struct sigframe. | |
2920 | */ | |
b5dc7732 TS |
2921 | regs->active_tc.gpr[ 4] = sig; |
2922 | regs->active_tc.gpr[ 5] = 0; | |
2923 | regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc); | |
2924 | regs->active_tc.gpr[29] = frame_addr; | |
2925 | regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code); | |
106ec879 FB |
2926 | /* The original kernel code sets CP0_EPC to the handler |
2927 | * since it returns to userland using eret | |
2928 | * we cannot do this here, and we must set PC directly */ | |
b5dc7732 | 2929 | regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler; |
ea3164aa | 2930 | mips_set_hflags_isa_mode_from_pc(regs); |
579a97f7 | 2931 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 FB |
2932 | return; |
2933 | ||
2934 | give_sigsegv: | |
2935 | force_sig(TARGET_SIGSEGV/*, current*/); | |
106ec879 FB |
2936 | } |
2937 | ||
05390248 | 2938 | long do_sigreturn(CPUMIPSState *regs) |
106ec879 | 2939 | { |
388bb21a | 2940 | struct sigframe *frame; |
579a97f7 | 2941 | abi_ulong frame_addr; |
388bb21a | 2942 | sigset_t blocked; |
c227f099 | 2943 | target_sigset_t target_set; |
388bb21a | 2944 | int i; |
106ec879 | 2945 | |
b5dc7732 | 2946 | frame_addr = regs->active_tc.gpr[29]; |
c8ee0a44 | 2947 | trace_user_do_sigreturn(regs, frame_addr); |
579a97f7 | 2948 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
106ec879 FB |
2949 | goto badframe; |
2950 | ||
388bb21a | 2951 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
f5f601af | 2952 | __get_user(target_set.sig[i], &frame->sf_mask.sig[i]); |
388bb21a | 2953 | } |
106ec879 | 2954 | |
388bb21a | 2955 | target_to_host_sigset_internal(&blocked, &target_set); |
1c275925 | 2956 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
106ec879 | 2957 | |
016d2e1d | 2958 | restore_sigcontext(regs, &frame->sf_sc); |
106ec879 FB |
2959 | |
2960 | #if 0 | |
388bb21a TS |
2961 | /* |
2962 | * Don't let your children do this ... | |
2963 | */ | |
2964 | __asm__ __volatile__( | |
106ec879 FB |
2965 | "move\t$29, %0\n\t" |
2966 | "j\tsyscall_exit" | |
2967 | :/* no outputs */ | |
2968 | :"r" (®s)); | |
388bb21a | 2969 | /* Unreached */ |
106ec879 | 2970 | #endif |
3b46e624 | 2971 | |
b5dc7732 | 2972 | regs->active_tc.PC = regs->CP0_EPC; |
ea3164aa | 2973 | mips_set_hflags_isa_mode_from_pc(regs); |
388bb21a | 2974 | /* I am not sure this is right, but it seems to work |
106ec879 FB |
2975 | * maybe a problem with nested signals ? */ |
2976 | regs->CP0_EPC = 0; | |
0b1bcb00 | 2977 | return -TARGET_QEMU_ESIGRETURN; |
106ec879 FB |
2978 | |
2979 | badframe: | |
388bb21a TS |
2980 | force_sig(TARGET_SIGSEGV/*, current*/); |
2981 | return 0; | |
106ec879 | 2982 | } |
ff970904 | 2983 | # endif /* O32 */ |
106ec879 | 2984 | |
624f7979 | 2985 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 2986 | target_siginfo_t *info, |
05390248 | 2987 | target_sigset_t *set, CPUMIPSState *env) |
106ec879 | 2988 | { |
0b1bcb00 PB |
2989 | struct target_rt_sigframe *frame; |
2990 | abi_ulong frame_addr; | |
2991 | int i; | |
2992 | ||
2993 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
c8ee0a44 | 2994 | trace_user_setup_rt_frame(env, frame_addr); |
0b1bcb00 PB |
2995 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
2996 | goto give_sigsegv; | |
2997 | ||
2998 | install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn); | |
2999 | ||
f6c7a05b | 3000 | tswap_siginfo(&frame->rs_info, info); |
0b1bcb00 | 3001 | |
60e99246 AJ |
3002 | __put_user(0, &frame->rs_uc.tuc_flags); |
3003 | __put_user(0, &frame->rs_uc.tuc_link); | |
3004 | __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp); | |
3005 | __put_user(target_sigaltstack_used.ss_size, &frame->rs_uc.tuc_stack.ss_size); | |
0b1bcb00 | 3006 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
60e99246 | 3007 | &frame->rs_uc.tuc_stack.ss_flags); |
0b1bcb00 | 3008 | |
60e99246 | 3009 | setup_sigcontext(env, &frame->rs_uc.tuc_mcontext); |
0b1bcb00 PB |
3010 | |
3011 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
60e99246 | 3012 | __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]); |
0b1bcb00 PB |
3013 | } |
3014 | ||
3015 | /* | |
3016 | * Arguments to signal handler: | |
3017 | * | |
3018 | * a0 = signal number | |
02d2bd5d | 3019 | * a1 = pointer to siginfo_t |
0b1bcb00 PB |
3020 | * a2 = pointer to struct ucontext |
3021 | * | |
3022 | * $25 and PC point to the signal handler, $29 points to the | |
3023 | * struct sigframe. | |
3024 | */ | |
3025 | env->active_tc.gpr[ 4] = sig; | |
3026 | env->active_tc.gpr[ 5] = frame_addr | |
3027 | + offsetof(struct target_rt_sigframe, rs_info); | |
3028 | env->active_tc.gpr[ 6] = frame_addr | |
3029 | + offsetof(struct target_rt_sigframe, rs_uc); | |
3030 | env->active_tc.gpr[29] = frame_addr; | |
3031 | env->active_tc.gpr[31] = frame_addr | |
3032 | + offsetof(struct target_rt_sigframe, rs_code); | |
3033 | /* The original kernel code sets CP0_EPC to the handler | |
3034 | * since it returns to userland using eret | |
3035 | * we cannot do this here, and we must set PC directly */ | |
3036 | env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler; | |
ea3164aa | 3037 | mips_set_hflags_isa_mode_from_pc(env); |
0b1bcb00 PB |
3038 | unlock_user_struct(frame, frame_addr, 1); |
3039 | return; | |
3040 | ||
3041 | give_sigsegv: | |
3042 | unlock_user_struct(frame, frame_addr, 1); | |
3043 | force_sig(TARGET_SIGSEGV/*, current*/); | |
106ec879 FB |
3044 | } |
3045 | ||
05390248 | 3046 | long do_rt_sigreturn(CPUMIPSState *env) |
106ec879 | 3047 | { |
0b1bcb00 PB |
3048 | struct target_rt_sigframe *frame; |
3049 | abi_ulong frame_addr; | |
3050 | sigset_t blocked; | |
3051 | ||
0b1bcb00 | 3052 | frame_addr = env->active_tc.gpr[29]; |
c8ee0a44 | 3053 | trace_user_do_rt_sigreturn(env, frame_addr); |
0b1bcb00 PB |
3054 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
3055 | goto badframe; | |
3056 | ||
60e99246 | 3057 | target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask); |
1c275925 | 3058 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
0b1bcb00 | 3059 | |
016d2e1d | 3060 | restore_sigcontext(env, &frame->rs_uc.tuc_mcontext); |
0b1bcb00 PB |
3061 | |
3062 | if (do_sigaltstack(frame_addr + | |
60e99246 | 3063 | offsetof(struct target_rt_sigframe, rs_uc.tuc_stack), |
0b1bcb00 PB |
3064 | 0, get_sp_from_cpustate(env)) == -EFAULT) |
3065 | goto badframe; | |
3066 | ||
3067 | env->active_tc.PC = env->CP0_EPC; | |
ea3164aa | 3068 | mips_set_hflags_isa_mode_from_pc(env); |
0b1bcb00 PB |
3069 | /* I am not sure this is right, but it seems to work |
3070 | * maybe a problem with nested signals ? */ | |
3071 | env->CP0_EPC = 0; | |
3072 | return -TARGET_QEMU_ESIGRETURN; | |
3073 | ||
3074 | badframe: | |
3075 | force_sig(TARGET_SIGSEGV/*, current*/); | |
3076 | return 0; | |
106ec879 | 3077 | } |
6d5e216d | 3078 | |
c3b5bc8a TS |
3079 | #elif defined(TARGET_SH4) |
3080 | ||
3081 | /* | |
3082 | * code and data structures from linux kernel: | |
3083 | * include/asm-sh/sigcontext.h | |
3084 | * arch/sh/kernel/signal.c | |
3085 | */ | |
3086 | ||
3087 | struct target_sigcontext { | |
3088 | target_ulong oldmask; | |
3089 | ||
3090 | /* CPU registers */ | |
3091 | target_ulong sc_gregs[16]; | |
3092 | target_ulong sc_pc; | |
3093 | target_ulong sc_pr; | |
3094 | target_ulong sc_sr; | |
3095 | target_ulong sc_gbr; | |
3096 | target_ulong sc_mach; | |
3097 | target_ulong sc_macl; | |
3098 | ||
3099 | /* FPU registers */ | |
3100 | target_ulong sc_fpregs[16]; | |
3101 | target_ulong sc_xfpregs[16]; | |
3102 | unsigned int sc_fpscr; | |
3103 | unsigned int sc_fpul; | |
3104 | unsigned int sc_ownedfp; | |
3105 | }; | |
3106 | ||
3107 | struct target_sigframe | |
3108 | { | |
3109 | struct target_sigcontext sc; | |
3110 | target_ulong extramask[TARGET_NSIG_WORDS-1]; | |
3111 | uint16_t retcode[3]; | |
3112 | }; | |
3113 | ||
3114 | ||
3115 | struct target_ucontext { | |
60e99246 AJ |
3116 | target_ulong tuc_flags; |
3117 | struct target_ucontext *tuc_link; | |
3118 | target_stack_t tuc_stack; | |
3119 | struct target_sigcontext tuc_mcontext; | |
3120 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
c3b5bc8a TS |
3121 | }; |
3122 | ||
3123 | struct target_rt_sigframe | |
3124 | { | |
3125 | struct target_siginfo info; | |
3126 | struct target_ucontext uc; | |
3127 | uint16_t retcode[3]; | |
3128 | }; | |
3129 | ||
3130 | ||
3131 | #define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */ | |
3132 | #define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */ | |
3133 | ||
624f7979 | 3134 | static abi_ulong get_sigframe(struct target_sigaction *ka, |
c3b5bc8a TS |
3135 | unsigned long sp, size_t frame_size) |
3136 | { | |
624f7979 | 3137 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) { |
c3b5bc8a TS |
3138 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
3139 | } | |
3140 | ||
3141 | return (sp - frame_size) & -8ul; | |
3142 | } | |
3143 | ||
41ecc72b | 3144 | static void setup_sigcontext(struct target_sigcontext *sc, |
05390248 | 3145 | CPUSH4State *regs, unsigned long mask) |
c3b5bc8a | 3146 | { |
d8714436 | 3147 | int i; |
c3b5bc8a | 3148 | |
1d8b512b | 3149 | #define COPY(x) __put_user(regs->x, &sc->sc_##x) |
c3b5bc8a TS |
3150 | COPY(gregs[0]); COPY(gregs[1]); |
3151 | COPY(gregs[2]); COPY(gregs[3]); | |
3152 | COPY(gregs[4]); COPY(gregs[5]); | |
3153 | COPY(gregs[6]); COPY(gregs[7]); | |
3154 | COPY(gregs[8]); COPY(gregs[9]); | |
3155 | COPY(gregs[10]); COPY(gregs[11]); | |
3156 | COPY(gregs[12]); COPY(gregs[13]); | |
3157 | COPY(gregs[14]); COPY(gregs[15]); | |
3158 | COPY(gbr); COPY(mach); | |
3159 | COPY(macl); COPY(pr); | |
3160 | COPY(sr); COPY(pc); | |
3161 | #undef COPY | |
3162 | ||
d8714436 | 3163 | for (i=0; i<16; i++) { |
1d8b512b | 3164 | __put_user(regs->fregs[i], &sc->sc_fpregs[i]); |
d8714436 | 3165 | } |
1d8b512b RV |
3166 | __put_user(regs->fpscr, &sc->sc_fpscr); |
3167 | __put_user(regs->fpul, &sc->sc_fpul); | |
c3b5bc8a TS |
3168 | |
3169 | /* non-iBCS2 extensions.. */ | |
1d8b512b | 3170 | __put_user(mask, &sc->oldmask); |
c3b5bc8a TS |
3171 | } |
3172 | ||
016d2e1d | 3173 | static void restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc, |
d8714436 | 3174 | target_ulong *r0_p) |
c3b5bc8a | 3175 | { |
d8714436 | 3176 | int i; |
c3b5bc8a | 3177 | |
1d8b512b | 3178 | #define COPY(x) __get_user(regs->x, &sc->sc_##x) |
c3b5bc8a TS |
3179 | COPY(gregs[1]); |
3180 | COPY(gregs[2]); COPY(gregs[3]); | |
3181 | COPY(gregs[4]); COPY(gregs[5]); | |
3182 | COPY(gregs[6]); COPY(gregs[7]); | |
3183 | COPY(gregs[8]); COPY(gregs[9]); | |
3184 | COPY(gregs[10]); COPY(gregs[11]); | |
3185 | COPY(gregs[12]); COPY(gregs[13]); | |
3186 | COPY(gregs[14]); COPY(gregs[15]); | |
3187 | COPY(gbr); COPY(mach); | |
3188 | COPY(macl); COPY(pr); | |
3189 | COPY(sr); COPY(pc); | |
3190 | #undef COPY | |
3191 | ||
d8714436 | 3192 | for (i=0; i<16; i++) { |
1d8b512b | 3193 | __get_user(regs->fregs[i], &sc->sc_fpregs[i]); |
d8714436 | 3194 | } |
1d8b512b RV |
3195 | __get_user(regs->fpscr, &sc->sc_fpscr); |
3196 | __get_user(regs->fpul, &sc->sc_fpul); | |
c3b5bc8a TS |
3197 | |
3198 | regs->tra = -1; /* disable syscall checks */ | |
1d8b512b | 3199 | __get_user(*r0_p, &sc->sc_gregs[0]); |
c3b5bc8a TS |
3200 | } |
3201 | ||
624f7979 | 3202 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 3203 | target_sigset_t *set, CPUSH4State *regs) |
c3b5bc8a TS |
3204 | { |
3205 | struct target_sigframe *frame; | |
3206 | abi_ulong frame_addr; | |
3207 | int i; | |
c3b5bc8a TS |
3208 | |
3209 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
c8ee0a44 | 3210 | trace_user_setup_frame(regs, frame_addr); |
c3b5bc8a TS |
3211 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
3212 | goto give_sigsegv; | |
3213 | ||
41ecc72b | 3214 | setup_sigcontext(&frame->sc, regs, set->sig[0]); |
c3b5bc8a TS |
3215 | |
3216 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
1d8b512b | 3217 | __put_user(set->sig[i + 1], &frame->extramask[i]); |
c3b5bc8a TS |
3218 | } |
3219 | ||
3220 | /* Set up to return from userspace. If provided, use a stub | |
3221 | already in userspace. */ | |
624f7979 PB |
3222 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
3223 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
3224 | } else { |
3225 | /* Generate return code (system call to sigreturn) */ | |
2a0fa68f LV |
3226 | abi_ulong retcode_addr = frame_addr + |
3227 | offsetof(struct target_sigframe, retcode); | |
1d8b512b RV |
3228 | __put_user(MOVW(2), &frame->retcode[0]); |
3229 | __put_user(TRAP_NOARG, &frame->retcode[1]); | |
3230 | __put_user((TARGET_NR_sigreturn), &frame->retcode[2]); | |
2a0fa68f | 3231 | regs->pr = (unsigned long) retcode_addr; |
c3b5bc8a TS |
3232 | } |
3233 | ||
c3b5bc8a | 3234 | /* Set up registers for signal handler */ |
cb9c6268 | 3235 | regs->gregs[15] = frame_addr; |
b6e2c935 | 3236 | regs->gregs[4] = sig; /* Arg for signal handler */ |
c3b5bc8a | 3237 | regs->gregs[5] = 0; |
cb9c6268 | 3238 | regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc); |
624f7979 | 3239 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
3240 | |
3241 | unlock_user_struct(frame, frame_addr, 1); | |
3242 | return; | |
3243 | ||
3244 | give_sigsegv: | |
3245 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 3246 | force_sig(TARGET_SIGSEGV); |
c3b5bc8a TS |
3247 | } |
3248 | ||
624f7979 | 3249 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3250 | target_siginfo_t *info, |
05390248 | 3251 | target_sigset_t *set, CPUSH4State *regs) |
c3b5bc8a TS |
3252 | { |
3253 | struct target_rt_sigframe *frame; | |
3254 | abi_ulong frame_addr; | |
3255 | int i; | |
c3b5bc8a TS |
3256 | |
3257 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
c8ee0a44 | 3258 | trace_user_setup_rt_frame(regs, frame_addr); |
c3b5bc8a TS |
3259 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
3260 | goto give_sigsegv; | |
3261 | ||
f6c7a05b | 3262 | tswap_siginfo(&frame->info, info); |
c3b5bc8a TS |
3263 | |
3264 | /* Create the ucontext. */ | |
1d8b512b RV |
3265 | __put_user(0, &frame->uc.tuc_flags); |
3266 | __put_user(0, (unsigned long *)&frame->uc.tuc_link); | |
3267 | __put_user((unsigned long)target_sigaltstack_used.ss_sp, | |
3268 | &frame->uc.tuc_stack.ss_sp); | |
3269 | __put_user(sas_ss_flags(regs->gregs[15]), | |
3270 | &frame->uc.tuc_stack.ss_flags); | |
3271 | __put_user(target_sigaltstack_used.ss_size, | |
3272 | &frame->uc.tuc_stack.ss_size); | |
3273 | setup_sigcontext(&frame->uc.tuc_mcontext, | |
c3b5bc8a TS |
3274 | regs, set->sig[0]); |
3275 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
1d8b512b | 3276 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
c3b5bc8a TS |
3277 | } |
3278 | ||
3279 | /* Set up to return from userspace. If provided, use a stub | |
3280 | already in userspace. */ | |
624f7979 PB |
3281 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
3282 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
3283 | } else { |
3284 | /* Generate return code (system call to sigreturn) */ | |
2a0fa68f LV |
3285 | abi_ulong retcode_addr = frame_addr + |
3286 | offsetof(struct target_rt_sigframe, retcode); | |
1d8b512b RV |
3287 | __put_user(MOVW(2), &frame->retcode[0]); |
3288 | __put_user(TRAP_NOARG, &frame->retcode[1]); | |
3289 | __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]); | |
2a0fa68f | 3290 | regs->pr = (unsigned long) retcode_addr; |
c3b5bc8a TS |
3291 | } |
3292 | ||
c3b5bc8a | 3293 | /* Set up registers for signal handler */ |
cb9c6268 | 3294 | regs->gregs[15] = frame_addr; |
b6e2c935 | 3295 | regs->gregs[4] = sig; /* Arg for signal handler */ |
cb9c6268 EI |
3296 | regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info); |
3297 | regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc); | |
624f7979 | 3298 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
3299 | |
3300 | unlock_user_struct(frame, frame_addr, 1); | |
3301 | return; | |
3302 | ||
3303 | give_sigsegv: | |
3304 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 3305 | force_sig(TARGET_SIGSEGV); |
c3b5bc8a TS |
3306 | } |
3307 | ||
05390248 | 3308 | long do_sigreturn(CPUSH4State *regs) |
c3b5bc8a TS |
3309 | { |
3310 | struct target_sigframe *frame; | |
3311 | abi_ulong frame_addr; | |
3312 | sigset_t blocked; | |
c227f099 | 3313 | target_sigset_t target_set; |
d8714436 | 3314 | target_ulong r0; |
c3b5bc8a TS |
3315 | int i; |
3316 | int err = 0; | |
3317 | ||
c3b5bc8a | 3318 | frame_addr = regs->gregs[15]; |
c8ee0a44 | 3319 | trace_user_do_sigreturn(regs, frame_addr); |
c3b5bc8a TS |
3320 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
3321 | goto badframe; | |
3322 | ||
1d8b512b | 3323 | __get_user(target_set.sig[0], &frame->sc.oldmask); |
c3b5bc8a | 3324 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1d8b512b | 3325 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
c3b5bc8a TS |
3326 | } |
3327 | ||
3328 | if (err) | |
3329 | goto badframe; | |
3330 | ||
3331 | target_to_host_sigset_internal(&blocked, &target_set); | |
1c275925 | 3332 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
c3b5bc8a | 3333 | |
016d2e1d | 3334 | restore_sigcontext(regs, &frame->sc, &r0); |
c3b5bc8a TS |
3335 | |
3336 | unlock_user_struct(frame, frame_addr, 0); | |
d8714436 | 3337 | return r0; |
c3b5bc8a TS |
3338 | |
3339 | badframe: | |
3340 | unlock_user_struct(frame, frame_addr, 0); | |
3341 | force_sig(TARGET_SIGSEGV); | |
3342 | return 0; | |
3343 | } | |
3344 | ||
05390248 | 3345 | long do_rt_sigreturn(CPUSH4State *regs) |
c3b5bc8a TS |
3346 | { |
3347 | struct target_rt_sigframe *frame; | |
3348 | abi_ulong frame_addr; | |
3349 | sigset_t blocked; | |
d8714436 | 3350 | target_ulong r0; |
c3b5bc8a | 3351 | |
c3b5bc8a | 3352 | frame_addr = regs->gregs[15]; |
c8ee0a44 | 3353 | trace_user_do_rt_sigreturn(regs, frame_addr); |
c3b5bc8a TS |
3354 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
3355 | goto badframe; | |
3356 | ||
60e99246 | 3357 | target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask); |
1c275925 | 3358 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
c3b5bc8a | 3359 | |
016d2e1d | 3360 | restore_sigcontext(regs, &frame->uc.tuc_mcontext, &r0); |
c3b5bc8a TS |
3361 | |
3362 | if (do_sigaltstack(frame_addr + | |
60e99246 | 3363 | offsetof(struct target_rt_sigframe, uc.tuc_stack), |
c3b5bc8a TS |
3364 | 0, get_sp_from_cpustate(regs)) == -EFAULT) |
3365 | goto badframe; | |
3366 | ||
3367 | unlock_user_struct(frame, frame_addr, 0); | |
d8714436 | 3368 | return r0; |
c3b5bc8a TS |
3369 | |
3370 | badframe: | |
3371 | unlock_user_struct(frame, frame_addr, 0); | |
3372 | force_sig(TARGET_SIGSEGV); | |
3373 | return 0; | |
3374 | } | |
b779e29e EI |
3375 | #elif defined(TARGET_MICROBLAZE) |
3376 | ||
3377 | struct target_sigcontext { | |
3378 | struct target_pt_regs regs; /* needs to be first */ | |
3379 | uint32_t oldmask; | |
3380 | }; | |
3381 | ||
b2178704 EI |
3382 | struct target_stack_t { |
3383 | abi_ulong ss_sp; | |
3384 | int ss_flags; | |
3385 | unsigned int ss_size; | |
3386 | }; | |
3387 | ||
3388 | struct target_ucontext { | |
f711df67 RH |
3389 | abi_ulong tuc_flags; |
3390 | abi_ulong tuc_link; | |
3391 | struct target_stack_t tuc_stack; | |
3392 | struct target_sigcontext tuc_mcontext; | |
3393 | uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1]; | |
b2178704 EI |
3394 | }; |
3395 | ||
b779e29e EI |
3396 | /* Signal frames. */ |
3397 | struct target_signal_frame { | |
b2178704 | 3398 | struct target_ucontext uc; |
b779e29e EI |
3399 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; |
3400 | uint32_t tramp[2]; | |
3401 | }; | |
3402 | ||
3403 | struct rt_signal_frame { | |
02d2bd5d | 3404 | siginfo_t info; |
b779e29e EI |
3405 | struct ucontext uc; |
3406 | uint32_t tramp[2]; | |
3407 | }; | |
3408 | ||
05390248 | 3409 | static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env) |
b779e29e EI |
3410 | { |
3411 | __put_user(env->regs[0], &sc->regs.r0); | |
3412 | __put_user(env->regs[1], &sc->regs.r1); | |
3413 | __put_user(env->regs[2], &sc->regs.r2); | |
3414 | __put_user(env->regs[3], &sc->regs.r3); | |
3415 | __put_user(env->regs[4], &sc->regs.r4); | |
3416 | __put_user(env->regs[5], &sc->regs.r5); | |
3417 | __put_user(env->regs[6], &sc->regs.r6); | |
3418 | __put_user(env->regs[7], &sc->regs.r7); | |
3419 | __put_user(env->regs[8], &sc->regs.r8); | |
3420 | __put_user(env->regs[9], &sc->regs.r9); | |
3421 | __put_user(env->regs[10], &sc->regs.r10); | |
3422 | __put_user(env->regs[11], &sc->regs.r11); | |
3423 | __put_user(env->regs[12], &sc->regs.r12); | |
3424 | __put_user(env->regs[13], &sc->regs.r13); | |
3425 | __put_user(env->regs[14], &sc->regs.r14); | |
3426 | __put_user(env->regs[15], &sc->regs.r15); | |
3427 | __put_user(env->regs[16], &sc->regs.r16); | |
3428 | __put_user(env->regs[17], &sc->regs.r17); | |
3429 | __put_user(env->regs[18], &sc->regs.r18); | |
3430 | __put_user(env->regs[19], &sc->regs.r19); | |
3431 | __put_user(env->regs[20], &sc->regs.r20); | |
3432 | __put_user(env->regs[21], &sc->regs.r21); | |
3433 | __put_user(env->regs[22], &sc->regs.r22); | |
3434 | __put_user(env->regs[23], &sc->regs.r23); | |
3435 | __put_user(env->regs[24], &sc->regs.r24); | |
3436 | __put_user(env->regs[25], &sc->regs.r25); | |
3437 | __put_user(env->regs[26], &sc->regs.r26); | |
3438 | __put_user(env->regs[27], &sc->regs.r27); | |
3439 | __put_user(env->regs[28], &sc->regs.r28); | |
3440 | __put_user(env->regs[29], &sc->regs.r29); | |
3441 | __put_user(env->regs[30], &sc->regs.r30); | |
3442 | __put_user(env->regs[31], &sc->regs.r31); | |
3443 | __put_user(env->sregs[SR_PC], &sc->regs.pc); | |
3444 | } | |
3445 | ||
05390248 | 3446 | static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env) |
b779e29e EI |
3447 | { |
3448 | __get_user(env->regs[0], &sc->regs.r0); | |
3449 | __get_user(env->regs[1], &sc->regs.r1); | |
3450 | __get_user(env->regs[2], &sc->regs.r2); | |
3451 | __get_user(env->regs[3], &sc->regs.r3); | |
3452 | __get_user(env->regs[4], &sc->regs.r4); | |
3453 | __get_user(env->regs[5], &sc->regs.r5); | |
3454 | __get_user(env->regs[6], &sc->regs.r6); | |
3455 | __get_user(env->regs[7], &sc->regs.r7); | |
3456 | __get_user(env->regs[8], &sc->regs.r8); | |
3457 | __get_user(env->regs[9], &sc->regs.r9); | |
3458 | __get_user(env->regs[10], &sc->regs.r10); | |
3459 | __get_user(env->regs[11], &sc->regs.r11); | |
3460 | __get_user(env->regs[12], &sc->regs.r12); | |
3461 | __get_user(env->regs[13], &sc->regs.r13); | |
3462 | __get_user(env->regs[14], &sc->regs.r14); | |
3463 | __get_user(env->regs[15], &sc->regs.r15); | |
3464 | __get_user(env->regs[16], &sc->regs.r16); | |
3465 | __get_user(env->regs[17], &sc->regs.r17); | |
3466 | __get_user(env->regs[18], &sc->regs.r18); | |
3467 | __get_user(env->regs[19], &sc->regs.r19); | |
3468 | __get_user(env->regs[20], &sc->regs.r20); | |
3469 | __get_user(env->regs[21], &sc->regs.r21); | |
3470 | __get_user(env->regs[22], &sc->regs.r22); | |
3471 | __get_user(env->regs[23], &sc->regs.r23); | |
3472 | __get_user(env->regs[24], &sc->regs.r24); | |
3473 | __get_user(env->regs[25], &sc->regs.r25); | |
3474 | __get_user(env->regs[26], &sc->regs.r26); | |
3475 | __get_user(env->regs[27], &sc->regs.r27); | |
3476 | __get_user(env->regs[28], &sc->regs.r28); | |
3477 | __get_user(env->regs[29], &sc->regs.r29); | |
3478 | __get_user(env->regs[30], &sc->regs.r30); | |
3479 | __get_user(env->regs[31], &sc->regs.r31); | |
3480 | __get_user(env->sregs[SR_PC], &sc->regs.pc); | |
3481 | } | |
3482 | ||
3483 | static abi_ulong get_sigframe(struct target_sigaction *ka, | |
05390248 | 3484 | CPUMBState *env, int frame_size) |
b779e29e EI |
3485 | { |
3486 | abi_ulong sp = env->regs[1]; | |
3487 | ||
b545f63f | 3488 | if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !on_sig_stack(sp)) { |
b779e29e | 3489 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
b545f63f | 3490 | } |
b779e29e EI |
3491 | |
3492 | return ((sp - frame_size) & -8UL); | |
3493 | } | |
3494 | ||
3495 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 3496 | target_sigset_t *set, CPUMBState *env) |
b779e29e EI |
3497 | { |
3498 | struct target_signal_frame *frame; | |
3499 | abi_ulong frame_addr; | |
b779e29e EI |
3500 | int i; |
3501 | ||
3502 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
c8ee0a44 | 3503 | trace_user_setup_frame(env, frame_addr); |
b779e29e EI |
3504 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
3505 | goto badframe; | |
3506 | ||
3507 | /* Save the mask. */ | |
1d8b512b | 3508 | __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask); |
b779e29e EI |
3509 | |
3510 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
0188fadb | 3511 | __put_user(set->sig[i], &frame->extramask[i - 1]); |
b779e29e EI |
3512 | } |
3513 | ||
f711df67 | 3514 | setup_sigcontext(&frame->uc.tuc_mcontext, env); |
b779e29e EI |
3515 | |
3516 | /* Set up to return from userspace. If provided, use a stub | |
3517 | already in userspace. */ | |
3518 | /* minus 8 is offset to cater for "rtsd r15,8" offset */ | |
3519 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
3520 | env->regs[15] = ((unsigned long)ka->sa_restorer)-8; | |
3521 | } else { | |
3522 | uint32_t t; | |
3523 | /* Note, these encodings are _big endian_! */ | |
3524 | /* addi r12, r0, __NR_sigreturn */ | |
3525 | t = 0x31800000UL | TARGET_NR_sigreturn; | |
1d8b512b | 3526 | __put_user(t, frame->tramp + 0); |
b779e29e EI |
3527 | /* brki r14, 0x8 */ |
3528 | t = 0xb9cc0008UL; | |
1d8b512b | 3529 | __put_user(t, frame->tramp + 1); |
b779e29e EI |
3530 | |
3531 | /* Return from sighandler will jump to the tramp. | |
3532 | Negative 8 offset because return is rtsd r15, 8 */ | |
3533 | env->regs[15] = ((unsigned long)frame->tramp) - 8; | |
3534 | } | |
3535 | ||
b779e29e | 3536 | /* Set up registers for signal handler */ |
cb9c6268 | 3537 | env->regs[1] = frame_addr; |
b779e29e EI |
3538 | /* Signal handler args: */ |
3539 | env->regs[5] = sig; /* Arg 0: signum */ | |
187b4e08 | 3540 | env->regs[6] = 0; |
cb9c6268 EI |
3541 | /* arg 1: sigcontext */ |
3542 | env->regs[7] = frame_addr += offsetof(typeof(*frame), uc); | |
b779e29e EI |
3543 | |
3544 | /* Offset of 4 to handle microblaze rtid r14, 0 */ | |
3545 | env->sregs[SR_PC] = (unsigned long)ka->_sa_handler; | |
3546 | ||
3547 | unlock_user_struct(frame, frame_addr, 1); | |
3548 | return; | |
3549 | badframe: | |
b779e29e EI |
3550 | force_sig(TARGET_SIGSEGV); |
3551 | } | |
3552 | ||
3553 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 3554 | target_siginfo_t *info, |
05390248 | 3555 | target_sigset_t *set, CPUMBState *env) |
b779e29e EI |
3556 | { |
3557 | fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n"); | |
3558 | } | |
3559 | ||
05390248 | 3560 | long do_sigreturn(CPUMBState *env) |
b779e29e EI |
3561 | { |
3562 | struct target_signal_frame *frame; | |
3563 | abi_ulong frame_addr; | |
c227f099 | 3564 | target_sigset_t target_set; |
b779e29e EI |
3565 | sigset_t set; |
3566 | int i; | |
3567 | ||
3568 | frame_addr = env->regs[R_SP]; | |
c8ee0a44 | 3569 | trace_user_do_sigreturn(env, frame_addr); |
b779e29e EI |
3570 | /* Make sure the guest isn't playing games. */ |
3571 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) | |
3572 | goto badframe; | |
3573 | ||
3574 | /* Restore blocked signals */ | |
f5f601af | 3575 | __get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask); |
b779e29e | 3576 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
f5f601af | 3577 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
b779e29e EI |
3578 | } |
3579 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 3580 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
b779e29e | 3581 | |
f711df67 | 3582 | restore_sigcontext(&frame->uc.tuc_mcontext, env); |
b779e29e EI |
3583 | /* We got here through a sigreturn syscall, our path back is via an |
3584 | rtb insn so setup r14 for that. */ | |
3585 | env->regs[14] = env->sregs[SR_PC]; | |
3586 | ||
3587 | unlock_user_struct(frame, frame_addr, 0); | |
3588 | return env->regs[10]; | |
3589 | badframe: | |
b779e29e EI |
3590 | force_sig(TARGET_SIGSEGV); |
3591 | } | |
3592 | ||
05390248 | 3593 | long do_rt_sigreturn(CPUMBState *env) |
b779e29e | 3594 | { |
c8ee0a44 | 3595 | trace_user_do_rt_sigreturn(env, 0); |
b779e29e EI |
3596 | fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n"); |
3597 | return -TARGET_ENOSYS; | |
3598 | } | |
3599 | ||
b6d3abda EI |
3600 | #elif defined(TARGET_CRIS) |
3601 | ||
3602 | struct target_sigcontext { | |
3603 | struct target_pt_regs regs; /* needs to be first */ | |
3604 | uint32_t oldmask; | |
3605 | uint32_t usp; /* usp before stacking this gunk on it */ | |
3606 | }; | |
3607 | ||
3608 | /* Signal frames. */ | |
3609 | struct target_signal_frame { | |
3610 | struct target_sigcontext sc; | |
3611 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; | |
8cfc114a | 3612 | uint16_t retcode[4]; /* Trampoline code. */ |
b6d3abda EI |
3613 | }; |
3614 | ||
3615 | struct rt_signal_frame { | |
02d2bd5d | 3616 | siginfo_t *pinfo; |
b6d3abda | 3617 | void *puc; |
02d2bd5d | 3618 | siginfo_t info; |
b6d3abda | 3619 | struct ucontext uc; |
8cfc114a | 3620 | uint16_t retcode[4]; /* Trampoline code. */ |
b6d3abda EI |
3621 | }; |
3622 | ||
05390248 | 3623 | static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) |
b6d3abda | 3624 | { |
9664d928 EI |
3625 | __put_user(env->regs[0], &sc->regs.r0); |
3626 | __put_user(env->regs[1], &sc->regs.r1); | |
3627 | __put_user(env->regs[2], &sc->regs.r2); | |
3628 | __put_user(env->regs[3], &sc->regs.r3); | |
3629 | __put_user(env->regs[4], &sc->regs.r4); | |
3630 | __put_user(env->regs[5], &sc->regs.r5); | |
3631 | __put_user(env->regs[6], &sc->regs.r6); | |
3632 | __put_user(env->regs[7], &sc->regs.r7); | |
3633 | __put_user(env->regs[8], &sc->regs.r8); | |
3634 | __put_user(env->regs[9], &sc->regs.r9); | |
3635 | __put_user(env->regs[10], &sc->regs.r10); | |
3636 | __put_user(env->regs[11], &sc->regs.r11); | |
3637 | __put_user(env->regs[12], &sc->regs.r12); | |
3638 | __put_user(env->regs[13], &sc->regs.r13); | |
3639 | __put_user(env->regs[14], &sc->usp); | |
3640 | __put_user(env->regs[15], &sc->regs.acr); | |
3641 | __put_user(env->pregs[PR_MOF], &sc->regs.mof); | |
3642 | __put_user(env->pregs[PR_SRP], &sc->regs.srp); | |
3643 | __put_user(env->pc, &sc->regs.erp); | |
b6d3abda | 3644 | } |
9664d928 | 3645 | |
05390248 | 3646 | static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) |
b6d3abda | 3647 | { |
9664d928 EI |
3648 | __get_user(env->regs[0], &sc->regs.r0); |
3649 | __get_user(env->regs[1], &sc->regs.r1); | |
3650 | __get_user(env->regs[2], &sc->regs.r2); | |
3651 | __get_user(env->regs[3], &sc->regs.r3); | |
3652 | __get_user(env->regs[4], &sc->regs.r4); | |
3653 | __get_user(env->regs[5], &sc->regs.r5); | |
3654 | __get_user(env->regs[6], &sc->regs.r6); | |
3655 | __get_user(env->regs[7], &sc->regs.r7); | |
3656 | __get_user(env->regs[8], &sc->regs.r8); | |
3657 | __get_user(env->regs[9], &sc->regs.r9); | |
3658 | __get_user(env->regs[10], &sc->regs.r10); | |
3659 | __get_user(env->regs[11], &sc->regs.r11); | |
3660 | __get_user(env->regs[12], &sc->regs.r12); | |
3661 | __get_user(env->regs[13], &sc->regs.r13); | |
3662 | __get_user(env->regs[14], &sc->usp); | |
3663 | __get_user(env->regs[15], &sc->regs.acr); | |
3664 | __get_user(env->pregs[PR_MOF], &sc->regs.mof); | |
3665 | __get_user(env->pregs[PR_SRP], &sc->regs.srp); | |
3666 | __get_user(env->pc, &sc->regs.erp); | |
3667 | } | |
3668 | ||
05390248 | 3669 | static abi_ulong get_sigframe(CPUCRISState *env, int framesize) |
9664d928 EI |
3670 | { |
3671 | abi_ulong sp; | |
b6d3abda | 3672 | /* Align the stack downwards to 4. */ |
9664d928 EI |
3673 | sp = (env->regs[R_SP] & ~3); |
3674 | return sp - framesize; | |
b6d3abda EI |
3675 | } |
3676 | ||
624f7979 | 3677 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 3678 | target_sigset_t *set, CPUCRISState *env) |
b6d3abda EI |
3679 | { |
3680 | struct target_signal_frame *frame; | |
9664d928 | 3681 | abi_ulong frame_addr; |
b6d3abda | 3682 | int i; |
b6d3abda | 3683 | |
9664d928 | 3684 | frame_addr = get_sigframe(env, sizeof *frame); |
c8ee0a44 | 3685 | trace_user_setup_frame(env, frame_addr); |
9664d928 | 3686 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
b6d3abda EI |
3687 | goto badframe; |
3688 | ||
3689 | /* | |
3690 | * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't | |
3691 | * use this trampoline anymore but it sets it up for GDB. | |
3692 | * In QEMU, using the trampoline simplifies things a bit so we use it. | |
3693 | * | |
3694 | * This is movu.w __NR_sigreturn, r9; break 13; | |
3695 | */ | |
1d8b512b RV |
3696 | __put_user(0x9c5f, frame->retcode+0); |
3697 | __put_user(TARGET_NR_sigreturn, | |
3698 | frame->retcode + 1); | |
3699 | __put_user(0xe93d, frame->retcode + 2); | |
b6d3abda EI |
3700 | |
3701 | /* Save the mask. */ | |
1d8b512b | 3702 | __put_user(set->sig[0], &frame->sc.oldmask); |
b6d3abda | 3703 | |
0188fadb RV |
3704 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
3705 | __put_user(set->sig[i], &frame->extramask[i - 1]); | |
3706 | } | |
b6d3abda EI |
3707 | |
3708 | setup_sigcontext(&frame->sc, env); | |
3709 | ||
3710 | /* Move the stack and setup the arguments for the handler. */ | |
cb9c6268 | 3711 | env->regs[R_SP] = frame_addr; |
b6d3abda | 3712 | env->regs[10] = sig; |
624f7979 | 3713 | env->pc = (unsigned long) ka->_sa_handler; |
b6d3abda | 3714 | /* Link SRP so the guest returns through the trampoline. */ |
cb9c6268 | 3715 | env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode); |
b6d3abda | 3716 | |
9664d928 | 3717 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
3718 | return; |
3719 | badframe: | |
b6d3abda EI |
3720 | force_sig(TARGET_SIGSEGV); |
3721 | } | |
3722 | ||
624f7979 | 3723 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3724 | target_siginfo_t *info, |
05390248 | 3725 | target_sigset_t *set, CPUCRISState *env) |
b6d3abda EI |
3726 | { |
3727 | fprintf(stderr, "CRIS setup_rt_frame: not implemented\n"); | |
3728 | } | |
3729 | ||
05390248 | 3730 | long do_sigreturn(CPUCRISState *env) |
b6d3abda EI |
3731 | { |
3732 | struct target_signal_frame *frame; | |
9664d928 | 3733 | abi_ulong frame_addr; |
c227f099 | 3734 | target_sigset_t target_set; |
b6d3abda EI |
3735 | sigset_t set; |
3736 | int i; | |
3737 | ||
9664d928 | 3738 | frame_addr = env->regs[R_SP]; |
c8ee0a44 | 3739 | trace_user_do_sigreturn(env, frame_addr); |
b6d3abda | 3740 | /* Make sure the guest isn't playing games. */ |
9664d928 | 3741 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
b6d3abda EI |
3742 | goto badframe; |
3743 | ||
3744 | /* Restore blocked signals */ | |
f5f601af | 3745 | __get_user(target_set.sig[0], &frame->sc.oldmask); |
b6d3abda | 3746 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
f5f601af | 3747 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
b6d3abda EI |
3748 | } |
3749 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 3750 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
b6d3abda EI |
3751 | |
3752 | restore_sigcontext(&frame->sc, env); | |
9664d928 | 3753 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3754 | return env->regs[10]; |
3755 | badframe: | |
b6d3abda EI |
3756 | force_sig(TARGET_SIGSEGV); |
3757 | } | |
3758 | ||
05390248 | 3759 | long do_rt_sigreturn(CPUCRISState *env) |
b6d3abda | 3760 | { |
c8ee0a44 | 3761 | trace_user_do_rt_sigreturn(env, 0); |
b6d3abda EI |
3762 | fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n"); |
3763 | return -TARGET_ENOSYS; | |
3764 | } | |
c3b5bc8a | 3765 | |
d962783e JL |
3766 | #elif defined(TARGET_OPENRISC) |
3767 | ||
3768 | struct target_sigcontext { | |
3769 | struct target_pt_regs regs; | |
3770 | abi_ulong oldmask; | |
3771 | abi_ulong usp; | |
3772 | }; | |
3773 | ||
3774 | struct target_ucontext { | |
3775 | abi_ulong tuc_flags; | |
3776 | abi_ulong tuc_link; | |
3777 | target_stack_t tuc_stack; | |
3778 | struct target_sigcontext tuc_mcontext; | |
3779 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
3780 | }; | |
3781 | ||
3782 | struct target_rt_sigframe { | |
3783 | abi_ulong pinfo; | |
3784 | uint64_t puc; | |
3785 | struct target_siginfo info; | |
3786 | struct target_sigcontext sc; | |
3787 | struct target_ucontext uc; | |
3788 | unsigned char retcode[16]; /* trampoline code */ | |
3789 | }; | |
3790 | ||
3791 | /* This is the asm-generic/ucontext.h version */ | |
3792 | #if 0 | |
3793 | static int restore_sigcontext(CPUOpenRISCState *regs, | |
3794 | struct target_sigcontext *sc) | |
3795 | { | |
3796 | unsigned int err = 0; | |
3797 | unsigned long old_usp; | |
3798 | ||
3799 | /* Alwys make any pending restarted system call return -EINTR */ | |
3800 | current_thread_info()->restart_block.fn = do_no_restart_syscall; | |
3801 | ||
3802 | /* restore the regs from &sc->regs (same as sc, since regs is first) | |
3803 | * (sc is already checked for VERIFY_READ since the sigframe was | |
3804 | * checked in sys_sigreturn previously) | |
3805 | */ | |
3806 | ||
3807 | if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) { | |
3808 | goto badframe; | |
3809 | } | |
3810 | ||
3811 | /* make sure the U-flag is set so user-mode cannot fool us */ | |
3812 | ||
3813 | regs->sr &= ~SR_SM; | |
3814 | ||
3815 | /* restore the old USP as it was before we stacked the sc etc. | |
3816 | * (we cannot just pop the sigcontext since we aligned the sp and | |
3817 | * stuff after pushing it) | |
3818 | */ | |
3819 | ||
1d8b512b | 3820 | __get_user(old_usp, &sc->usp); |
d962783e JL |
3821 | phx_signal("old_usp 0x%lx", old_usp); |
3822 | ||
3823 | __PHX__ REALLY /* ??? */ | |
3824 | wrusp(old_usp); | |
3825 | regs->gpr[1] = old_usp; | |
3826 | ||
3827 | /* TODO: the other ports use regs->orig_XX to disable syscall checks | |
3828 | * after this completes, but we don't use that mechanism. maybe we can | |
3829 | * use it now ? | |
3830 | */ | |
3831 | ||
3832 | return err; | |
3833 | ||
3834 | badframe: | |
3835 | return 1; | |
3836 | } | |
3837 | #endif | |
3838 | ||
3839 | /* Set up a signal frame. */ | |
3840 | ||
41ecc72b | 3841 | static void setup_sigcontext(struct target_sigcontext *sc, |
d962783e JL |
3842 | CPUOpenRISCState *regs, |
3843 | unsigned long mask) | |
3844 | { | |
d962783e JL |
3845 | unsigned long usp = regs->gpr[1]; |
3846 | ||
3847 | /* copy the regs. they are first in sc so we can use sc directly */ | |
3848 | ||
1d8b512b | 3849 | /*copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/ |
d962783e JL |
3850 | |
3851 | /* Set the frametype to CRIS_FRAME_NORMAL for the execution of | |
3852 | the signal handler. The frametype will be restored to its previous | |
3853 | value in restore_sigcontext. */ | |
3854 | /*regs->frametype = CRIS_FRAME_NORMAL;*/ | |
3855 | ||
3856 | /* then some other stuff */ | |
1d8b512b | 3857 | __put_user(mask, &sc->oldmask); |
41ecc72b | 3858 | __put_user(usp, &sc->usp); |
d962783e JL |
3859 | } |
3860 | ||
3861 | static inline unsigned long align_sigframe(unsigned long sp) | |
3862 | { | |
3863 | unsigned long i; | |
3864 | i = sp & ~3UL; | |
3865 | return i; | |
3866 | } | |
3867 | ||
3868 | static inline abi_ulong get_sigframe(struct target_sigaction *ka, | |
3869 | CPUOpenRISCState *regs, | |
3870 | size_t frame_size) | |
3871 | { | |
3872 | unsigned long sp = regs->gpr[1]; | |
3873 | int onsigstack = on_sig_stack(sp); | |
3874 | ||
3875 | /* redzone */ | |
3876 | /* This is the X/Open sanctioned signal stack switching. */ | |
b545f63f | 3877 | if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !onsigstack) { |
d962783e JL |
3878 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
3879 | } | |
3880 | ||
3881 | sp = align_sigframe(sp - frame_size); | |
3882 | ||
3883 | /* | |
3884 | * If we are on the alternate signal stack and would overflow it, don't. | |
3885 | * Return an always-bogus address instead so we will die with SIGSEGV. | |
3886 | */ | |
3887 | ||
3888 | if (onsigstack && !likely(on_sig_stack(sp))) { | |
3889 | return -1L; | |
3890 | } | |
3891 | ||
3892 | return sp; | |
3893 | } | |
3894 | ||
d962783e JL |
3895 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
3896 | target_siginfo_t *info, | |
3897 | target_sigset_t *set, CPUOpenRISCState *env) | |
3898 | { | |
3899 | int err = 0; | |
3900 | abi_ulong frame_addr; | |
3901 | unsigned long return_ip; | |
3902 | struct target_rt_sigframe *frame; | |
3903 | abi_ulong info_addr, uc_addr; | |
3904 | ||
d962783e | 3905 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
c8ee0a44 | 3906 | trace_user_setup_rt_frame(env, frame_addr); |
d962783e JL |
3907 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { |
3908 | goto give_sigsegv; | |
3909 | } | |
3910 | ||
3911 | info_addr = frame_addr + offsetof(struct target_rt_sigframe, info); | |
1d8b512b | 3912 | __put_user(info_addr, &frame->pinfo); |
d962783e | 3913 | uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc); |
1d8b512b | 3914 | __put_user(uc_addr, &frame->puc); |
d962783e JL |
3915 | |
3916 | if (ka->sa_flags & SA_SIGINFO) { | |
f6c7a05b | 3917 | tswap_siginfo(&frame->info, info); |
d962783e JL |
3918 | } |
3919 | ||
3920 | /*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/ | |
1d8b512b RV |
3921 | __put_user(0, &frame->uc.tuc_flags); |
3922 | __put_user(0, &frame->uc.tuc_link); | |
3923 | __put_user(target_sigaltstack_used.ss_sp, | |
3924 | &frame->uc.tuc_stack.ss_sp); | |
3925 | __put_user(sas_ss_flags(env->gpr[1]), &frame->uc.tuc_stack.ss_flags); | |
3926 | __put_user(target_sigaltstack_used.ss_size, | |
3927 | &frame->uc.tuc_stack.ss_size); | |
41ecc72b | 3928 | setup_sigcontext(&frame->sc, env, set->sig[0]); |
d962783e JL |
3929 | |
3930 | /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/ | |
3931 | ||
d962783e JL |
3932 | /* trampoline - the desired return ip is the retcode itself */ |
3933 | return_ip = (unsigned long)&frame->retcode; | |
3934 | /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */ | |
1d8b512b RV |
3935 | __put_user(0xa960, (short *)(frame->retcode + 0)); |
3936 | __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2)); | |
3937 | __put_user(0x20000001, (unsigned long *)(frame->retcode + 4)); | |
3938 | __put_user(0x15000000, (unsigned long *)(frame->retcode + 8)); | |
d962783e JL |
3939 | |
3940 | if (err) { | |
3941 | goto give_sigsegv; | |
3942 | } | |
3943 | ||
3944 | /* TODO what is the current->exec_domain stuff and invmap ? */ | |
3945 | ||
3946 | /* Set up registers for signal handler */ | |
3947 | env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */ | |
3948 | env->gpr[9] = (unsigned long)return_ip; /* what we enter LATER */ | |
3949 | env->gpr[3] = (unsigned long)sig; /* arg 1: signo */ | |
3950 | env->gpr[4] = (unsigned long)&frame->info; /* arg 2: (siginfo_t*) */ | |
3951 | env->gpr[5] = (unsigned long)&frame->uc; /* arg 3: ucontext */ | |
3952 | ||
3953 | /* actually move the usp to reflect the stacked frame */ | |
3954 | env->gpr[1] = (unsigned long)frame; | |
3955 | ||
3956 | return; | |
3957 | ||
3958 | give_sigsegv: | |
3959 | unlock_user_struct(frame, frame_addr, 1); | |
3960 | if (sig == TARGET_SIGSEGV) { | |
3961 | ka->_sa_handler = TARGET_SIG_DFL; | |
3962 | } | |
3963 | force_sig(TARGET_SIGSEGV); | |
3964 | } | |
3965 | ||
3966 | long do_sigreturn(CPUOpenRISCState *env) | |
3967 | { | |
c8ee0a44 PB |
3968 | trace_user_do_sigreturn(env, 0); |
3969 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
d962783e JL |
3970 | return -TARGET_ENOSYS; |
3971 | } | |
3972 | ||
3973 | long do_rt_sigreturn(CPUOpenRISCState *env) | |
3974 | { | |
c8ee0a44 PB |
3975 | trace_user_do_rt_sigreturn(env, 0); |
3976 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
d962783e JL |
3977 | return -TARGET_ENOSYS; |
3978 | } | |
3979 | /* TARGET_OPENRISC */ | |
3980 | ||
a4c075f1 UH |
3981 | #elif defined(TARGET_S390X) |
3982 | ||
3983 | #define __NUM_GPRS 16 | |
3984 | #define __NUM_FPRS 16 | |
3985 | #define __NUM_ACRS 16 | |
3986 | ||
3987 | #define S390_SYSCALL_SIZE 2 | |
3988 | #define __SIGNAL_FRAMESIZE 160 /* FIXME: 31-bit mode -> 96 */ | |
3989 | ||
3990 | #define _SIGCONTEXT_NSIG 64 | |
3991 | #define _SIGCONTEXT_NSIG_BPW 64 /* FIXME: 31-bit mode -> 32 */ | |
3992 | #define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW) | |
3993 | #define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS) | |
3994 | #define PSW_ADDR_AMODE 0x0000000000000000UL /* 0x80000000UL for 31-bit */ | |
3995 | #define S390_SYSCALL_OPCODE ((uint16_t)0x0a00) | |
3996 | ||
3997 | typedef struct { | |
3998 | target_psw_t psw; | |
3999 | target_ulong gprs[__NUM_GPRS]; | |
4000 | unsigned int acrs[__NUM_ACRS]; | |
4001 | } target_s390_regs_common; | |
4002 | ||
4003 | typedef struct { | |
4004 | unsigned int fpc; | |
4005 | double fprs[__NUM_FPRS]; | |
4006 | } target_s390_fp_regs; | |
4007 | ||
4008 | typedef struct { | |
4009 | target_s390_regs_common regs; | |
4010 | target_s390_fp_regs fpregs; | |
4011 | } target_sigregs; | |
4012 | ||
4013 | struct target_sigcontext { | |
4014 | target_ulong oldmask[_SIGCONTEXT_NSIG_WORDS]; | |
4015 | target_sigregs *sregs; | |
4016 | }; | |
4017 | ||
4018 | typedef struct { | |
4019 | uint8_t callee_used_stack[__SIGNAL_FRAMESIZE]; | |
4020 | struct target_sigcontext sc; | |
4021 | target_sigregs sregs; | |
4022 | int signo; | |
4023 | uint8_t retcode[S390_SYSCALL_SIZE]; | |
4024 | } sigframe; | |
4025 | ||
4026 | struct target_ucontext { | |
6fea2ea4 PM |
4027 | target_ulong tuc_flags; |
4028 | struct target_ucontext *tuc_link; | |
4029 | target_stack_t tuc_stack; | |
4030 | target_sigregs tuc_mcontext; | |
4031 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
a4c075f1 UH |
4032 | }; |
4033 | ||
4034 | typedef struct { | |
4035 | uint8_t callee_used_stack[__SIGNAL_FRAMESIZE]; | |
4036 | uint8_t retcode[S390_SYSCALL_SIZE]; | |
4037 | struct target_siginfo info; | |
4038 | struct target_ucontext uc; | |
4039 | } rt_sigframe; | |
4040 | ||
4041 | static inline abi_ulong | |
05390248 | 4042 | get_sigframe(struct target_sigaction *ka, CPUS390XState *env, size_t frame_size) |
a4c075f1 UH |
4043 | { |
4044 | abi_ulong sp; | |
4045 | ||
4046 | /* Default to using normal stack */ | |
4047 | sp = env->regs[15]; | |
4048 | ||
4049 | /* This is the X/Open sanctioned signal stack switching. */ | |
4050 | if (ka->sa_flags & TARGET_SA_ONSTACK) { | |
4051 | if (!sas_ss_flags(sp)) { | |
4052 | sp = target_sigaltstack_used.ss_sp + | |
4053 | target_sigaltstack_used.ss_size; | |
4054 | } | |
4055 | } | |
4056 | ||
4057 | /* This is the legacy signal stack switching. */ | |
4058 | else if (/* FIXME !user_mode(regs) */ 0 && | |
4059 | !(ka->sa_flags & TARGET_SA_RESTORER) && | |
4060 | ka->sa_restorer) { | |
4061 | sp = (abi_ulong) ka->sa_restorer; | |
4062 | } | |
4063 | ||
4064 | return (sp - frame_size) & -8ul; | |
4065 | } | |
4066 | ||
05390248 | 4067 | static void save_sigregs(CPUS390XState *env, target_sigregs *sregs) |
a4c075f1 UH |
4068 | { |
4069 | int i; | |
4070 | //save_access_regs(current->thread.acrs); FIXME | |
4071 | ||
4072 | /* Copy a 'clean' PSW mask to the user to avoid leaking | |
4073 | information about whether PER is currently on. */ | |
4074 | __put_user(env->psw.mask, &sregs->regs.psw.mask); | |
4075 | __put_user(env->psw.addr, &sregs->regs.psw.addr); | |
4076 | for (i = 0; i < 16; i++) { | |
4077 | __put_user(env->regs[i], &sregs->regs.gprs[i]); | |
4078 | } | |
4079 | for (i = 0; i < 16; i++) { | |
4080 | __put_user(env->aregs[i], &sregs->regs.acrs[i]); | |
4081 | } | |
4082 | /* | |
4083 | * We have to store the fp registers to current->thread.fp_regs | |
4084 | * to merge them with the emulated registers. | |
4085 | */ | |
4086 | //save_fp_regs(¤t->thread.fp_regs); FIXME | |
4087 | for (i = 0; i < 16; i++) { | |
c498d8e3 | 4088 | __put_user(get_freg(env, i)->ll, &sregs->fpregs.fprs[i]); |
a4c075f1 UH |
4089 | } |
4090 | } | |
4091 | ||
4092 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 4093 | target_sigset_t *set, CPUS390XState *env) |
a4c075f1 UH |
4094 | { |
4095 | sigframe *frame; | |
4096 | abi_ulong frame_addr; | |
4097 | ||
4098 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
c8ee0a44 | 4099 | trace_user_setup_frame(env, frame_addr); |
a4c075f1 UH |
4100 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { |
4101 | goto give_sigsegv; | |
4102 | } | |
4103 | ||
0188fadb | 4104 | __put_user(set->sig[0], &frame->sc.oldmask[0]); |
a4c075f1 UH |
4105 | |
4106 | save_sigregs(env, &frame->sregs); | |
4107 | ||
4108 | __put_user((abi_ulong)(unsigned long)&frame->sregs, | |
4109 | (abi_ulong *)&frame->sc.sregs); | |
4110 | ||
4111 | /* Set up to return from userspace. If provided, use a stub | |
4112 | already in userspace. */ | |
4113 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
4114 | env->regs[14] = (unsigned long) | |
4115 | ka->sa_restorer | PSW_ADDR_AMODE; | |
4116 | } else { | |
4117 | env->regs[14] = (unsigned long) | |
4118 | frame->retcode | PSW_ADDR_AMODE; | |
0188fadb RV |
4119 | __put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn, |
4120 | (uint16_t *)(frame->retcode)); | |
a4c075f1 UH |
4121 | } |
4122 | ||
4123 | /* Set up backchain. */ | |
0188fadb | 4124 | __put_user(env->regs[15], (abi_ulong *) frame); |
a4c075f1 UH |
4125 | |
4126 | /* Set up registers for signal handler */ | |
cb9c6268 | 4127 | env->regs[15] = frame_addr; |
a4c075f1 UH |
4128 | env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE; |
4129 | ||
4130 | env->regs[2] = sig; //map_signal(sig); | |
cb9c6268 | 4131 | env->regs[3] = frame_addr += offsetof(typeof(*frame), sc); |
a4c075f1 UH |
4132 | |
4133 | /* We forgot to include these in the sigcontext. | |
4134 | To avoid breaking binary compatibility, they are passed as args. */ | |
4135 | env->regs[4] = 0; // FIXME: no clue... current->thread.trap_no; | |
4136 | env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr; | |
4137 | ||
4138 | /* Place signal number on stack to allow backtrace from handler. */ | |
0188fadb | 4139 | __put_user(env->regs[2], (int *) &frame->signo); |
a4c075f1 UH |
4140 | unlock_user_struct(frame, frame_addr, 1); |
4141 | return; | |
4142 | ||
4143 | give_sigsegv: | |
a4c075f1 UH |
4144 | force_sig(TARGET_SIGSEGV); |
4145 | } | |
4146 | ||
4147 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
4148 | target_siginfo_t *info, | |
05390248 | 4149 | target_sigset_t *set, CPUS390XState *env) |
a4c075f1 UH |
4150 | { |
4151 | int i; | |
4152 | rt_sigframe *frame; | |
4153 | abi_ulong frame_addr; | |
4154 | ||
4155 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
c8ee0a44 | 4156 | trace_user_setup_rt_frame(env, frame_addr); |
a4c075f1 UH |
4157 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { |
4158 | goto give_sigsegv; | |
4159 | } | |
4160 | ||
f6c7a05b | 4161 | tswap_siginfo(&frame->info, info); |
a4c075f1 UH |
4162 | |
4163 | /* Create the ucontext. */ | |
6fea2ea4 PM |
4164 | __put_user(0, &frame->uc.tuc_flags); |
4165 | __put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link); | |
4166 | __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp); | |
a4c075f1 | 4167 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
6fea2ea4 PM |
4168 | &frame->uc.tuc_stack.ss_flags); |
4169 | __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size); | |
4170 | save_sigregs(env, &frame->uc.tuc_mcontext); | |
a4c075f1 UH |
4171 | for (i = 0; i < TARGET_NSIG_WORDS; i++) { |
4172 | __put_user((abi_ulong)set->sig[i], | |
6fea2ea4 | 4173 | (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]); |
a4c075f1 UH |
4174 | } |
4175 | ||
4176 | /* Set up to return from userspace. If provided, use a stub | |
4177 | already in userspace. */ | |
4178 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
4179 | env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE; | |
4180 | } else { | |
4181 | env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE; | |
0188fadb RV |
4182 | __put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn, |
4183 | (uint16_t *)(frame->retcode)); | |
a4c075f1 UH |
4184 | } |
4185 | ||
4186 | /* Set up backchain. */ | |
0188fadb | 4187 | __put_user(env->regs[15], (abi_ulong *) frame); |
a4c075f1 UH |
4188 | |
4189 | /* Set up registers for signal handler */ | |
cb9c6268 | 4190 | env->regs[15] = frame_addr; |
a4c075f1 UH |
4191 | env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE; |
4192 | ||
4193 | env->regs[2] = sig; //map_signal(sig); | |
cb9c6268 EI |
4194 | env->regs[3] = frame_addr + offsetof(typeof(*frame), info); |
4195 | env->regs[4] = frame_addr + offsetof(typeof(*frame), uc); | |
a4c075f1 UH |
4196 | return; |
4197 | ||
4198 | give_sigsegv: | |
a4c075f1 UH |
4199 | force_sig(TARGET_SIGSEGV); |
4200 | } | |
4201 | ||
4202 | static int | |
05390248 | 4203 | restore_sigregs(CPUS390XState *env, target_sigregs *sc) |
a4c075f1 UH |
4204 | { |
4205 | int err = 0; | |
4206 | int i; | |
4207 | ||
4208 | for (i = 0; i < 16; i++) { | |
1d8b512b | 4209 | __get_user(env->regs[i], &sc->regs.gprs[i]); |
a4c075f1 UH |
4210 | } |
4211 | ||
1d8b512b | 4212 | __get_user(env->psw.mask, &sc->regs.psw.mask); |
c8ee0a44 PB |
4213 | trace_user_s390x_restore_sigregs(env, (unsigned long long)sc->regs.psw.addr, |
4214 | (unsigned long long)env->psw.addr); | |
1d8b512b | 4215 | __get_user(env->psw.addr, &sc->regs.psw.addr); |
a4c075f1 UH |
4216 | /* FIXME: 31-bit -> | PSW_ADDR_AMODE */ |
4217 | ||
4218 | for (i = 0; i < 16; i++) { | |
1d8b512b | 4219 | __get_user(env->aregs[i], &sc->regs.acrs[i]); |
a4c075f1 UH |
4220 | } |
4221 | for (i = 0; i < 16; i++) { | |
c498d8e3 | 4222 | __get_user(get_freg(env, i)->ll, &sc->fpregs.fprs[i]); |
a4c075f1 UH |
4223 | } |
4224 | ||
4225 | return err; | |
4226 | } | |
4227 | ||
05390248 | 4228 | long do_sigreturn(CPUS390XState *env) |
a4c075f1 UH |
4229 | { |
4230 | sigframe *frame; | |
4231 | abi_ulong frame_addr = env->regs[15]; | |
a4c075f1 UH |
4232 | target_sigset_t target_set; |
4233 | sigset_t set; | |
4234 | ||
c8ee0a44 | 4235 | trace_user_do_sigreturn(env, frame_addr); |
a4c075f1 UH |
4236 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { |
4237 | goto badframe; | |
4238 | } | |
f5f601af | 4239 | __get_user(target_set.sig[0], &frame->sc.oldmask[0]); |
a4c075f1 UH |
4240 | |
4241 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 4242 | do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */ |
a4c075f1 UH |
4243 | |
4244 | if (restore_sigregs(env, &frame->sregs)) { | |
4245 | goto badframe; | |
4246 | } | |
4247 | ||
4248 | unlock_user_struct(frame, frame_addr, 0); | |
4249 | return env->regs[2]; | |
4250 | ||
4251 | badframe: | |
a4c075f1 UH |
4252 | force_sig(TARGET_SIGSEGV); |
4253 | return 0; | |
4254 | } | |
4255 | ||
05390248 | 4256 | long do_rt_sigreturn(CPUS390XState *env) |
a4c075f1 UH |
4257 | { |
4258 | rt_sigframe *frame; | |
4259 | abi_ulong frame_addr = env->regs[15]; | |
a4c075f1 UH |
4260 | sigset_t set; |
4261 | ||
c8ee0a44 | 4262 | trace_user_do_rt_sigreturn(env, frame_addr); |
a4c075f1 UH |
4263 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { |
4264 | goto badframe; | |
4265 | } | |
6fea2ea4 | 4266 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
a4c075f1 | 4267 | |
1c275925 | 4268 | do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */ |
a4c075f1 | 4269 | |
6fea2ea4 | 4270 | if (restore_sigregs(env, &frame->uc.tuc_mcontext)) { |
a4c075f1 UH |
4271 | goto badframe; |
4272 | } | |
4273 | ||
6fea2ea4 | 4274 | if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0, |
a4c075f1 UH |
4275 | get_sp_from_cpustate(env)) == -EFAULT) { |
4276 | goto badframe; | |
4277 | } | |
4278 | unlock_user_struct(frame, frame_addr, 0); | |
4279 | return env->regs[2]; | |
4280 | ||
4281 | badframe: | |
4282 | unlock_user_struct(frame, frame_addr, 0); | |
4283 | force_sig(TARGET_SIGSEGV); | |
4284 | return 0; | |
4285 | } | |
4286 | ||
61e75fec | 4287 | #elif defined(TARGET_PPC) |
bcd4933a NF |
4288 | |
4289 | /* Size of dummy stack frame allocated when calling signal handler. | |
4290 | See arch/powerpc/include/asm/ptrace.h. */ | |
4291 | #if defined(TARGET_PPC64) | |
4292 | #define SIGNAL_FRAMESIZE 128 | |
4293 | #else | |
4294 | #define SIGNAL_FRAMESIZE 64 | |
4295 | #endif | |
4296 | ||
61e75fec TM |
4297 | /* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC; |
4298 | on 64-bit PPC, sigcontext and mcontext are one and the same. */ | |
4299 | struct target_mcontext { | |
4300 | target_ulong mc_gregs[48]; | |
4301 | /* Includes fpscr. */ | |
4302 | uint64_t mc_fregs[33]; | |
4303 | target_ulong mc_pad[2]; | |
4304 | /* We need to handle Altivec and SPE at the same time, which no | |
4305 | kernel needs to do. Fortunately, the kernel defines this bit to | |
4306 | be Altivec-register-large all the time, rather than trying to | |
4307 | twiddle it based on the specific platform. */ | |
4308 | union { | |
4309 | /* SPE vector registers. One extra for SPEFSCR. */ | |
4310 | uint32_t spe[33]; | |
4311 | /* Altivec vector registers. The packing of VSCR and VRSAVE | |
4312 | varies depending on whether we're PPC64 or not: PPC64 splits | |
4313 | them apart; PPC32 stuffs them together. */ | |
4314 | #if defined(TARGET_PPC64) | |
4315 | #define QEMU_NVRREG 34 | |
4316 | #else | |
4317 | #define QEMU_NVRREG 33 | |
4318 | #endif | |
4319 | ppc_avr_t altivec[QEMU_NVRREG]; | |
4320 | #undef QEMU_NVRREG | |
4321 | } mc_vregs __attribute__((__aligned__(16))); | |
4322 | }; | |
4323 | ||
bcd4933a NF |
4324 | /* See arch/powerpc/include/asm/sigcontext.h. */ |
4325 | struct target_sigcontext { | |
4326 | target_ulong _unused[4]; | |
4327 | int32_t signal; | |
4328 | #if defined(TARGET_PPC64) | |
4329 | int32_t pad0; | |
4330 | #endif | |
4331 | target_ulong handler; | |
4332 | target_ulong oldmask; | |
4333 | target_ulong regs; /* struct pt_regs __user * */ | |
61e75fec TM |
4334 | #if defined(TARGET_PPC64) |
4335 | struct target_mcontext mcontext; | |
4336 | #endif | |
bcd4933a NF |
4337 | }; |
4338 | ||
4339 | /* Indices for target_mcontext.mc_gregs, below. | |
4340 | See arch/powerpc/include/asm/ptrace.h for details. */ | |
4341 | enum { | |
4342 | TARGET_PT_R0 = 0, | |
4343 | TARGET_PT_R1 = 1, | |
4344 | TARGET_PT_R2 = 2, | |
4345 | TARGET_PT_R3 = 3, | |
4346 | TARGET_PT_R4 = 4, | |
4347 | TARGET_PT_R5 = 5, | |
4348 | TARGET_PT_R6 = 6, | |
4349 | TARGET_PT_R7 = 7, | |
4350 | TARGET_PT_R8 = 8, | |
4351 | TARGET_PT_R9 = 9, | |
4352 | TARGET_PT_R10 = 10, | |
4353 | TARGET_PT_R11 = 11, | |
4354 | TARGET_PT_R12 = 12, | |
4355 | TARGET_PT_R13 = 13, | |
4356 | TARGET_PT_R14 = 14, | |
4357 | TARGET_PT_R15 = 15, | |
4358 | TARGET_PT_R16 = 16, | |
4359 | TARGET_PT_R17 = 17, | |
4360 | TARGET_PT_R18 = 18, | |
4361 | TARGET_PT_R19 = 19, | |
4362 | TARGET_PT_R20 = 20, | |
4363 | TARGET_PT_R21 = 21, | |
4364 | TARGET_PT_R22 = 22, | |
4365 | TARGET_PT_R23 = 23, | |
4366 | TARGET_PT_R24 = 24, | |
4367 | TARGET_PT_R25 = 25, | |
4368 | TARGET_PT_R26 = 26, | |
4369 | TARGET_PT_R27 = 27, | |
4370 | TARGET_PT_R28 = 28, | |
4371 | TARGET_PT_R29 = 29, | |
4372 | TARGET_PT_R30 = 30, | |
4373 | TARGET_PT_R31 = 31, | |
4374 | TARGET_PT_NIP = 32, | |
4375 | TARGET_PT_MSR = 33, | |
4376 | TARGET_PT_ORIG_R3 = 34, | |
4377 | TARGET_PT_CTR = 35, | |
4378 | TARGET_PT_LNK = 36, | |
4379 | TARGET_PT_XER = 37, | |
4380 | TARGET_PT_CCR = 38, | |
4381 | /* Yes, there are two registers with #39. One is 64-bit only. */ | |
4382 | TARGET_PT_MQ = 39, | |
4383 | TARGET_PT_SOFTE = 39, | |
4384 | TARGET_PT_TRAP = 40, | |
4385 | TARGET_PT_DAR = 41, | |
4386 | TARGET_PT_DSISR = 42, | |
4387 | TARGET_PT_RESULT = 43, | |
4388 | TARGET_PT_REGS_COUNT = 44 | |
4389 | }; | |
4390 | ||
bcd4933a NF |
4391 | |
4392 | struct target_ucontext { | |
60e99246 AJ |
4393 | target_ulong tuc_flags; |
4394 | target_ulong tuc_link; /* struct ucontext __user * */ | |
4395 | struct target_sigaltstack tuc_stack; | |
bcd4933a | 4396 | #if !defined(TARGET_PPC64) |
60e99246 AJ |
4397 | int32_t tuc_pad[7]; |
4398 | target_ulong tuc_regs; /* struct mcontext __user * | |
bcd4933a NF |
4399 | points to uc_mcontext field */ |
4400 | #endif | |
60e99246 | 4401 | target_sigset_t tuc_sigmask; |
bcd4933a | 4402 | #if defined(TARGET_PPC64) |
c227f099 | 4403 | target_sigset_t unused[15]; /* Allow for uc_sigmask growth */ |
61e75fec | 4404 | struct target_sigcontext tuc_sigcontext; |
bcd4933a | 4405 | #else |
60e99246 AJ |
4406 | int32_t tuc_maskext[30]; |
4407 | int32_t tuc_pad2[3]; | |
4408 | struct target_mcontext tuc_mcontext; | |
bcd4933a NF |
4409 | #endif |
4410 | }; | |
4411 | ||
4412 | /* See arch/powerpc/kernel/signal_32.c. */ | |
4413 | struct target_sigframe { | |
4414 | struct target_sigcontext sctx; | |
4415 | struct target_mcontext mctx; | |
4416 | int32_t abigap[56]; | |
4417 | }; | |
4418 | ||
61e75fec TM |
4419 | #if defined(TARGET_PPC64) |
4420 | ||
4421 | #define TARGET_TRAMP_SIZE 6 | |
4422 | ||
4423 | struct target_rt_sigframe { | |
4424 | /* sys_rt_sigreturn requires the ucontext be the first field */ | |
4425 | struct target_ucontext uc; | |
4426 | target_ulong _unused[2]; | |
4427 | uint32_t trampoline[TARGET_TRAMP_SIZE]; | |
4428 | target_ulong pinfo; /* struct siginfo __user * */ | |
4429 | target_ulong puc; /* void __user * */ | |
4430 | struct target_siginfo info; | |
4431 | /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */ | |
4432 | char abigap[288]; | |
4433 | } __attribute__((aligned(16))); | |
4434 | ||
4435 | #else | |
4436 | ||
bcd4933a NF |
4437 | struct target_rt_sigframe { |
4438 | struct target_siginfo info; | |
4439 | struct target_ucontext uc; | |
4440 | int32_t abigap[56]; | |
4441 | }; | |
4442 | ||
61e75fec TM |
4443 | #endif |
4444 | ||
8d6ab333 TM |
4445 | #if defined(TARGET_PPC64) |
4446 | ||
4447 | struct target_func_ptr { | |
4448 | target_ulong entry; | |
4449 | target_ulong toc; | |
4450 | }; | |
4451 | ||
4452 | #endif | |
4453 | ||
bcd4933a NF |
4454 | /* We use the mc_pad field for the signal return trampoline. */ |
4455 | #define tramp mc_pad | |
4456 | ||
4457 | /* See arch/powerpc/kernel/signal.c. */ | |
4458 | static target_ulong get_sigframe(struct target_sigaction *ka, | |
05390248 | 4459 | CPUPPCState *env, |
bcd4933a NF |
4460 | int frame_size) |
4461 | { | |
4462 | target_ulong oldsp, newsp; | |
4463 | ||
4464 | oldsp = env->gpr[1]; | |
4465 | ||
4466 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && | |
32a2003a | 4467 | (sas_ss_flags(oldsp) == 0)) { |
bcd4933a NF |
4468 | oldsp = (target_sigaltstack_used.ss_sp |
4469 | + target_sigaltstack_used.ss_size); | |
4470 | } | |
4471 | ||
4472 | newsp = (oldsp - frame_size) & ~0xFUL; | |
4473 | ||
4474 | return newsp; | |
4475 | } | |
4476 | ||
7678108b | 4477 | static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame) |
bcd4933a NF |
4478 | { |
4479 | target_ulong msr = env->msr; | |
4480 | int i; | |
4481 | target_ulong ccr = 0; | |
4482 | ||
4483 | /* In general, the kernel attempts to be intelligent about what it | |
4484 | needs to save for Altivec/FP/SPE registers. We don't care that | |
4485 | much, so we just go ahead and save everything. */ | |
4486 | ||
4487 | /* Save general registers. */ | |
4488 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
c650c008 | 4489 | __put_user(env->gpr[i], &frame->mc_gregs[i]); |
bcd4933a | 4490 | } |
c650c008 RV |
4491 | __put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]); |
4492 | __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]); | |
4493 | __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]); | |
4494 | __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]); | |
bcd4933a NF |
4495 | |
4496 | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { | |
4497 | ccr |= env->crf[i] << (32 - ((i + 1) * 4)); | |
4498 | } | |
c650c008 | 4499 | __put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]); |
bcd4933a NF |
4500 | |
4501 | /* Save Altivec registers if necessary. */ | |
4502 | if (env->insns_flags & PPC_ALTIVEC) { | |
4503 | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { | |
c227f099 AL |
4504 | ppc_avr_t *avr = &env->avr[i]; |
4505 | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; | |
bcd4933a | 4506 | |
c650c008 RV |
4507 | __put_user(avr->u64[0], &vreg->u64[0]); |
4508 | __put_user(avr->u64[1], &vreg->u64[1]); | |
bcd4933a NF |
4509 | } |
4510 | /* Set MSR_VR in the saved MSR value to indicate that | |
4511 | frame->mc_vregs contains valid data. */ | |
4512 | msr |= MSR_VR; | |
c650c008 RV |
4513 | __put_user((uint32_t)env->spr[SPR_VRSAVE], |
4514 | &frame->mc_vregs.altivec[32].u32[3]); | |
bcd4933a NF |
4515 | } |
4516 | ||
4517 | /* Save floating point registers. */ | |
4518 | if (env->insns_flags & PPC_FLOAT) { | |
4519 | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { | |
c650c008 | 4520 | __put_user(env->fpr[i], &frame->mc_fregs[i]); |
bcd4933a | 4521 | } |
c650c008 | 4522 | __put_user((uint64_t) env->fpscr, &frame->mc_fregs[32]); |
bcd4933a NF |
4523 | } |
4524 | ||
4525 | /* Save SPE registers. The kernel only saves the high half. */ | |
4526 | if (env->insns_flags & PPC_SPE) { | |
4527 | #if defined(TARGET_PPC64) | |
4528 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
c650c008 | 4529 | __put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i]); |
bcd4933a NF |
4530 | } |
4531 | #else | |
4532 | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { | |
c650c008 | 4533 | __put_user(env->gprh[i], &frame->mc_vregs.spe[i]); |
bcd4933a NF |
4534 | } |
4535 | #endif | |
4536 | /* Set MSR_SPE in the saved MSR value to indicate that | |
4537 | frame->mc_vregs contains valid data. */ | |
4538 | msr |= MSR_SPE; | |
c650c008 | 4539 | __put_user(env->spe_fscr, &frame->mc_vregs.spe[32]); |
bcd4933a NF |
4540 | } |
4541 | ||
4542 | /* Store MSR. */ | |
c650c008 | 4543 | __put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]); |
7678108b | 4544 | } |
bcd4933a | 4545 | |
7678108b TM |
4546 | static void encode_trampoline(int sigret, uint32_t *tramp) |
4547 | { | |
bcd4933a NF |
4548 | /* Set up the sigreturn trampoline: li r0,sigret; sc. */ |
4549 | if (sigret) { | |
7678108b TM |
4550 | __put_user(0x38000000 | sigret, &tramp[0]); |
4551 | __put_user(0x44000002, &tramp[1]); | |
bcd4933a | 4552 | } |
bcd4933a NF |
4553 | } |
4554 | ||
c650c008 RV |
4555 | static void restore_user_regs(CPUPPCState *env, |
4556 | struct target_mcontext *frame, int sig) | |
bcd4933a NF |
4557 | { |
4558 | target_ulong save_r2 = 0; | |
4559 | target_ulong msr; | |
4560 | target_ulong ccr; | |
4561 | ||
4562 | int i; | |
4563 | ||
4564 | if (!sig) { | |
4565 | save_r2 = env->gpr[2]; | |
4566 | } | |
4567 | ||
4568 | /* Restore general registers. */ | |
4569 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
c650c008 | 4570 | __get_user(env->gpr[i], &frame->mc_gregs[i]); |
bcd4933a | 4571 | } |
c650c008 RV |
4572 | __get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]); |
4573 | __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]); | |
4574 | __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]); | |
4575 | __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]); | |
4576 | __get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]); | |
bcd4933a NF |
4577 | |
4578 | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { | |
4579 | env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf; | |
4580 | } | |
4581 | ||
4582 | if (!sig) { | |
4583 | env->gpr[2] = save_r2; | |
4584 | } | |
4585 | /* Restore MSR. */ | |
c650c008 | 4586 | __get_user(msr, &frame->mc_gregs[TARGET_PT_MSR]); |
bcd4933a NF |
4587 | |
4588 | /* If doing signal return, restore the previous little-endian mode. */ | |
4589 | if (sig) | |
4590 | env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE); | |
4591 | ||
4592 | /* Restore Altivec registers if necessary. */ | |
4593 | if (env->insns_flags & PPC_ALTIVEC) { | |
4594 | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { | |
c227f099 AL |
4595 | ppc_avr_t *avr = &env->avr[i]; |
4596 | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; | |
bcd4933a | 4597 | |
c650c008 RV |
4598 | __get_user(avr->u64[0], &vreg->u64[0]); |
4599 | __get_user(avr->u64[1], &vreg->u64[1]); | |
bcd4933a NF |
4600 | } |
4601 | /* Set MSR_VEC in the saved MSR value to indicate that | |
4602 | frame->mc_vregs contains valid data. */ | |
c650c008 RV |
4603 | __get_user(env->spr[SPR_VRSAVE], |
4604 | (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3])); | |
bcd4933a NF |
4605 | } |
4606 | ||
4607 | /* Restore floating point registers. */ | |
4608 | if (env->insns_flags & PPC_FLOAT) { | |
4609 | uint64_t fpscr; | |
4610 | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { | |
c650c008 | 4611 | __get_user(env->fpr[i], &frame->mc_fregs[i]); |
bcd4933a | 4612 | } |
c650c008 | 4613 | __get_user(fpscr, &frame->mc_fregs[32]); |
bcd4933a NF |
4614 | env->fpscr = (uint32_t) fpscr; |
4615 | } | |
4616 | ||
4617 | /* Save SPE registers. The kernel only saves the high half. */ | |
4618 | if (env->insns_flags & PPC_SPE) { | |
4619 | #if defined(TARGET_PPC64) | |
4620 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
4621 | uint32_t hi; | |
4622 | ||
c650c008 | 4623 | __get_user(hi, &frame->mc_vregs.spe[i]); |
bcd4933a NF |
4624 | env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]); |
4625 | } | |
4626 | #else | |
4627 | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { | |
c650c008 | 4628 | __get_user(env->gprh[i], &frame->mc_vregs.spe[i]); |
bcd4933a NF |
4629 | } |
4630 | #endif | |
c650c008 | 4631 | __get_user(env->spe_fscr, &frame->mc_vregs.spe[32]); |
bcd4933a | 4632 | } |
bcd4933a NF |
4633 | } |
4634 | ||
4635 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 4636 | target_sigset_t *set, CPUPPCState *env) |
bcd4933a NF |
4637 | { |
4638 | struct target_sigframe *frame; | |
4639 | struct target_sigcontext *sc; | |
4640 | target_ulong frame_addr, newsp; | |
4641 | int err = 0; | |
14585580 TM |
4642 | #if defined(TARGET_PPC64) |
4643 | struct image_info *image = ((TaskState *)thread_cpu->opaque)->info; | |
4644 | #endif | |
bcd4933a NF |
4645 | |
4646 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
c8ee0a44 | 4647 | trace_user_setup_frame(env, frame_addr); |
bcd4933a NF |
4648 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
4649 | goto sigsegv; | |
4650 | sc = &frame->sctx; | |
4651 | ||
1d8b512b RV |
4652 | __put_user(ka->_sa_handler, &sc->handler); |
4653 | __put_user(set->sig[0], &sc->oldmask); | |
61e75fec | 4654 | #if TARGET_ABI_BITS == 64 |
1d8b512b | 4655 | __put_user(set->sig[0] >> 32, &sc->_unused[3]); |
bcd4933a | 4656 | #else |
1d8b512b | 4657 | __put_user(set->sig[1], &sc->_unused[3]); |
bcd4933a | 4658 | #endif |
1d8b512b RV |
4659 | __put_user(h2g(&frame->mctx), &sc->regs); |
4660 | __put_user(sig, &sc->signal); | |
bcd4933a NF |
4661 | |
4662 | /* Save user regs. */ | |
7678108b TM |
4663 | save_user_regs(env, &frame->mctx); |
4664 | ||
4665 | /* Construct the trampoline code on the stack. */ | |
4666 | encode_trampoline(TARGET_NR_sigreturn, (uint32_t *)&frame->mctx.tramp); | |
bcd4933a NF |
4667 | |
4668 | /* The kernel checks for the presence of a VDSO here. We don't | |
4669 | emulate a vdso, so use a sigreturn system call. */ | |
4670 | env->lr = (target_ulong) h2g(frame->mctx.tramp); | |
4671 | ||
4672 | /* Turn off all fp exceptions. */ | |
4673 | env->fpscr = 0; | |
4674 | ||
4675 | /* Create a stack frame for the caller of the handler. */ | |
4676 | newsp = frame_addr - SIGNAL_FRAMESIZE; | |
beb526b1 | 4677 | err |= put_user(env->gpr[1], newsp, target_ulong); |
bcd4933a NF |
4678 | |
4679 | if (err) | |
4680 | goto sigsegv; | |
4681 | ||
4682 | /* Set up registers for signal handler. */ | |
4683 | env->gpr[1] = newsp; | |
b6e2c935 | 4684 | env->gpr[3] = sig; |
61993a67 | 4685 | env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx); |
8d6ab333 TM |
4686 | |
4687 | #if defined(TARGET_PPC64) | |
14585580 TM |
4688 | if (get_ppc64_abi(image) < 2) { |
4689 | /* ELFv1 PPC64 function pointers are pointers to OPD entries. */ | |
4690 | struct target_func_ptr *handler = | |
4691 | (struct target_func_ptr *)g2h(ka->_sa_handler); | |
4692 | env->nip = tswapl(handler->entry); | |
4693 | env->gpr[2] = tswapl(handler->toc); | |
4694 | } else { | |
4695 | /* ELFv2 PPC64 function pointers are entry points, but R12 | |
4696 | * must also be set */ | |
4697 | env->nip = tswapl((target_ulong) ka->_sa_handler); | |
4698 | env->gpr[12] = env->nip; | |
4699 | } | |
8d6ab333 | 4700 | #else |
bcd4933a | 4701 | env->nip = (target_ulong) ka->_sa_handler; |
8d6ab333 TM |
4702 | #endif |
4703 | ||
bcd4933a NF |
4704 | /* Signal handlers are entered in big-endian mode. */ |
4705 | env->msr &= ~MSR_LE; | |
4706 | ||
4707 | unlock_user_struct(frame, frame_addr, 1); | |
4708 | return; | |
4709 | ||
4710 | sigsegv: | |
4711 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 4712 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4713 | } |
4714 | ||
4715 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 4716 | target_siginfo_t *info, |
05390248 | 4717 | target_sigset_t *set, CPUPPCState *env) |
bcd4933a NF |
4718 | { |
4719 | struct target_rt_sigframe *rt_sf; | |
61e75fec TM |
4720 | uint32_t *trampptr = 0; |
4721 | struct target_mcontext *mctx = 0; | |
bcd4933a NF |
4722 | target_ulong rt_sf_addr, newsp = 0; |
4723 | int i, err = 0; | |
14585580 TM |
4724 | #if defined(TARGET_PPC64) |
4725 | struct image_info *image = ((TaskState *)thread_cpu->opaque)->info; | |
4726 | #endif | |
bcd4933a NF |
4727 | |
4728 | rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf)); | |
4729 | if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1)) | |
4730 | goto sigsegv; | |
4731 | ||
f6c7a05b | 4732 | tswap_siginfo(&rt_sf->info, info); |
bcd4933a | 4733 | |
1d8b512b RV |
4734 | __put_user(0, &rt_sf->uc.tuc_flags); |
4735 | __put_user(0, &rt_sf->uc.tuc_link); | |
4736 | __put_user((target_ulong)target_sigaltstack_used.ss_sp, | |
4737 | &rt_sf->uc.tuc_stack.ss_sp); | |
4738 | __put_user(sas_ss_flags(env->gpr[1]), | |
4739 | &rt_sf->uc.tuc_stack.ss_flags); | |
4740 | __put_user(target_sigaltstack_used.ss_size, | |
4741 | &rt_sf->uc.tuc_stack.ss_size); | |
61e75fec | 4742 | #if !defined(TARGET_PPC64) |
1d8b512b RV |
4743 | __put_user(h2g (&rt_sf->uc.tuc_mcontext), |
4744 | &rt_sf->uc.tuc_regs); | |
61e75fec | 4745 | #endif |
bcd4933a | 4746 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1d8b512b | 4747 | __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]); |
bcd4933a NF |
4748 | } |
4749 | ||
61e75fec TM |
4750 | #if defined(TARGET_PPC64) |
4751 | mctx = &rt_sf->uc.tuc_sigcontext.mcontext; | |
4752 | trampptr = &rt_sf->trampoline[0]; | |
4753 | #else | |
4754 | mctx = &rt_sf->uc.tuc_mcontext; | |
4755 | trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp; | |
4756 | #endif | |
4757 | ||
4758 | save_user_regs(env, mctx); | |
4759 | encode_trampoline(TARGET_NR_rt_sigreturn, trampptr); | |
bcd4933a NF |
4760 | |
4761 | /* The kernel checks for the presence of a VDSO here. We don't | |
4762 | emulate a vdso, so use a sigreturn system call. */ | |
61e75fec | 4763 | env->lr = (target_ulong) h2g(trampptr); |
bcd4933a NF |
4764 | |
4765 | /* Turn off all fp exceptions. */ | |
4766 | env->fpscr = 0; | |
4767 | ||
4768 | /* Create a stack frame for the caller of the handler. */ | |
4769 | newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16); | |
fbdc200a | 4770 | err |= put_user(env->gpr[1], newsp, target_ulong); |
bcd4933a NF |
4771 | |
4772 | if (err) | |
4773 | goto sigsegv; | |
4774 | ||
4775 | /* Set up registers for signal handler. */ | |
4776 | env->gpr[1] = newsp; | |
b6e2c935 | 4777 | env->gpr[3] = (target_ulong) sig; |
bcd4933a NF |
4778 | env->gpr[4] = (target_ulong) h2g(&rt_sf->info); |
4779 | env->gpr[5] = (target_ulong) h2g(&rt_sf->uc); | |
4780 | env->gpr[6] = (target_ulong) h2g(rt_sf); | |
8d6ab333 TM |
4781 | |
4782 | #if defined(TARGET_PPC64) | |
14585580 TM |
4783 | if (get_ppc64_abi(image) < 2) { |
4784 | /* ELFv1 PPC64 function pointers are pointers to OPD entries. */ | |
4785 | struct target_func_ptr *handler = | |
4786 | (struct target_func_ptr *)g2h(ka->_sa_handler); | |
4787 | env->nip = tswapl(handler->entry); | |
4788 | env->gpr[2] = tswapl(handler->toc); | |
4789 | } else { | |
4790 | /* ELFv2 PPC64 function pointers are entry points, but R12 | |
4791 | * must also be set */ | |
4792 | env->nip = tswapl((target_ulong) ka->_sa_handler); | |
4793 | env->gpr[12] = env->nip; | |
4794 | } | |
8d6ab333 | 4795 | #else |
bcd4933a | 4796 | env->nip = (target_ulong) ka->_sa_handler; |
8d6ab333 TM |
4797 | #endif |
4798 | ||
bcd4933a NF |
4799 | /* Signal handlers are entered in big-endian mode. */ |
4800 | env->msr &= ~MSR_LE; | |
4801 | ||
4802 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4803 | return; | |
4804 | ||
4805 | sigsegv: | |
4806 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
66393fb9 | 4807 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4808 | |
4809 | } | |
4810 | ||
05390248 | 4811 | long do_sigreturn(CPUPPCState *env) |
bcd4933a NF |
4812 | { |
4813 | struct target_sigcontext *sc = NULL; | |
4814 | struct target_mcontext *sr = NULL; | |
b04636f8 | 4815 | target_ulong sr_addr = 0, sc_addr; |
bcd4933a | 4816 | sigset_t blocked; |
c227f099 | 4817 | target_sigset_t set; |
bcd4933a NF |
4818 | |
4819 | sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE; | |
4820 | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) | |
4821 | goto sigsegv; | |
4822 | ||
4823 | #if defined(TARGET_PPC64) | |
61e75fec | 4824 | set.sig[0] = sc->oldmask + ((uint64_t)(sc->_unused[3]) << 32); |
bcd4933a | 4825 | #else |
f5f601af RV |
4826 | __get_user(set.sig[0], &sc->oldmask); |
4827 | __get_user(set.sig[1], &sc->_unused[3]); | |
bcd4933a NF |
4828 | #endif |
4829 | target_to_host_sigset_internal(&blocked, &set); | |
1c275925 | 4830 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
bcd4933a | 4831 | |
f5f601af | 4832 | __get_user(sr_addr, &sc->regs); |
bcd4933a NF |
4833 | if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1)) |
4834 | goto sigsegv; | |
c650c008 | 4835 | restore_user_regs(env, sr, 1); |
bcd4933a NF |
4836 | |
4837 | unlock_user_struct(sr, sr_addr, 1); | |
4838 | unlock_user_struct(sc, sc_addr, 1); | |
4839 | return -TARGET_QEMU_ESIGRETURN; | |
4840 | ||
4841 | sigsegv: | |
4842 | unlock_user_struct(sr, sr_addr, 1); | |
4843 | unlock_user_struct(sc, sc_addr, 1); | |
66393fb9 | 4844 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4845 | return 0; |
4846 | } | |
4847 | ||
4848 | /* See arch/powerpc/kernel/signal_32.c. */ | |
05390248 | 4849 | static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int sig) |
bcd4933a NF |
4850 | { |
4851 | struct target_mcontext *mcp; | |
4852 | target_ulong mcp_addr; | |
4853 | sigset_t blocked; | |
c227f099 | 4854 | target_sigset_t set; |
bcd4933a | 4855 | |
60e99246 | 4856 | if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext, tuc_sigmask), |
bcd4933a NF |
4857 | sizeof (set))) |
4858 | return 1; | |
4859 | ||
19774ec5 TM |
4860 | #if defined(TARGET_PPC64) |
4861 | mcp_addr = h2g(ucp) + | |
4862 | offsetof(struct target_ucontext, tuc_sigcontext.mcontext); | |
4863 | #else | |
9e918dc9 | 4864 | __get_user(mcp_addr, &ucp->tuc_regs); |
19774ec5 | 4865 | #endif |
bcd4933a NF |
4866 | |
4867 | if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1)) | |
4868 | return 1; | |
4869 | ||
4870 | target_to_host_sigset_internal(&blocked, &set); | |
1c275925 | 4871 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
c650c008 | 4872 | restore_user_regs(env, mcp, sig); |
bcd4933a NF |
4873 | |
4874 | unlock_user_struct(mcp, mcp_addr, 1); | |
4875 | return 0; | |
bcd4933a NF |
4876 | } |
4877 | ||
05390248 | 4878 | long do_rt_sigreturn(CPUPPCState *env) |
bcd4933a NF |
4879 | { |
4880 | struct target_rt_sigframe *rt_sf = NULL; | |
4881 | target_ulong rt_sf_addr; | |
4882 | ||
4883 | rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16; | |
4884 | if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1)) | |
4885 | goto sigsegv; | |
4886 | ||
4887 | if (do_setcontext(&rt_sf->uc, env, 1)) | |
4888 | goto sigsegv; | |
4889 | ||
4890 | do_sigaltstack(rt_sf_addr | |
60e99246 | 4891 | + offsetof(struct target_rt_sigframe, uc.tuc_stack), |
bcd4933a NF |
4892 | 0, env->gpr[1]); |
4893 | ||
4894 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4895 | return -TARGET_QEMU_ESIGRETURN; | |
4896 | ||
4897 | sigsegv: | |
4898 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
66393fb9 | 4899 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4900 | return 0; |
4901 | } | |
4902 | ||
492a8744 LV |
4903 | #elif defined(TARGET_M68K) |
4904 | ||
4905 | struct target_sigcontext { | |
4906 | abi_ulong sc_mask; | |
4907 | abi_ulong sc_usp; | |
4908 | abi_ulong sc_d0; | |
4909 | abi_ulong sc_d1; | |
4910 | abi_ulong sc_a0; | |
4911 | abi_ulong sc_a1; | |
4912 | unsigned short sc_sr; | |
4913 | abi_ulong sc_pc; | |
4914 | }; | |
4915 | ||
4916 | struct target_sigframe | |
4917 | { | |
4918 | abi_ulong pretcode; | |
4919 | int sig; | |
4920 | int code; | |
4921 | abi_ulong psc; | |
4922 | char retcode[8]; | |
4923 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; | |
4924 | struct target_sigcontext sc; | |
4925 | }; | |
7181155d | 4926 | |
c227f099 | 4927 | typedef int target_greg_t; |
7181155d | 4928 | #define TARGET_NGREG 18 |
c227f099 | 4929 | typedef target_greg_t target_gregset_t[TARGET_NGREG]; |
7181155d LV |
4930 | |
4931 | typedef struct target_fpregset { | |
4932 | int f_fpcntl[3]; | |
4933 | int f_fpregs[8*3]; | |
c227f099 | 4934 | } target_fpregset_t; |
7181155d LV |
4935 | |
4936 | struct target_mcontext { | |
4937 | int version; | |
c227f099 AL |
4938 | target_gregset_t gregs; |
4939 | target_fpregset_t fpregs; | |
7181155d LV |
4940 | }; |
4941 | ||
4942 | #define TARGET_MCONTEXT_VERSION 2 | |
4943 | ||
4944 | struct target_ucontext { | |
60e99246 AJ |
4945 | abi_ulong tuc_flags; |
4946 | abi_ulong tuc_link; | |
4947 | target_stack_t tuc_stack; | |
4948 | struct target_mcontext tuc_mcontext; | |
4949 | abi_long tuc_filler[80]; | |
4950 | target_sigset_t tuc_sigmask; | |
7181155d LV |
4951 | }; |
4952 | ||
4953 | struct target_rt_sigframe | |
4954 | { | |
4955 | abi_ulong pretcode; | |
4956 | int sig; | |
4957 | abi_ulong pinfo; | |
4958 | abi_ulong puc; | |
4959 | char retcode[8]; | |
4960 | struct target_siginfo info; | |
4961 | struct target_ucontext uc; | |
4962 | }; | |
492a8744 | 4963 | |
41ecc72b RV |
4964 | static void setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env, |
4965 | abi_ulong mask) | |
492a8744 | 4966 | { |
1d8b512b RV |
4967 | __put_user(mask, &sc->sc_mask); |
4968 | __put_user(env->aregs[7], &sc->sc_usp); | |
4969 | __put_user(env->dregs[0], &sc->sc_d0); | |
4970 | __put_user(env->dregs[1], &sc->sc_d1); | |
4971 | __put_user(env->aregs[0], &sc->sc_a0); | |
4972 | __put_user(env->aregs[1], &sc->sc_a1); | |
4973 | __put_user(env->sr, &sc->sc_sr); | |
4974 | __put_user(env->pc, &sc->sc_pc); | |
492a8744 LV |
4975 | } |
4976 | ||
016d2e1d | 4977 | static void |
05390248 | 4978 | restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc, int *pd0) |
492a8744 | 4979 | { |
492a8744 LV |
4980 | int temp; |
4981 | ||
1d8b512b RV |
4982 | __get_user(env->aregs[7], &sc->sc_usp); |
4983 | __get_user(env->dregs[1], &sc->sc_d1); | |
4984 | __get_user(env->aregs[0], &sc->sc_a0); | |
4985 | __get_user(env->aregs[1], &sc->sc_a1); | |
4986 | __get_user(env->pc, &sc->sc_pc); | |
4987 | __get_user(temp, &sc->sc_sr); | |
492a8744 LV |
4988 | env->sr = (env->sr & 0xff00) | (temp & 0xff); |
4989 | ||
4990 | *pd0 = tswapl(sc->sc_d0); | |
492a8744 LV |
4991 | } |
4992 | ||
4993 | /* | |
4994 | * Determine which stack to use.. | |
4995 | */ | |
4996 | static inline abi_ulong | |
05390248 AF |
4997 | get_sigframe(struct target_sigaction *ka, CPUM68KState *regs, |
4998 | size_t frame_size) | |
492a8744 LV |
4999 | { |
5000 | unsigned long sp; | |
5001 | ||
5002 | sp = regs->aregs[7]; | |
5003 | ||
5004 | /* This is the X/Open sanctioned signal stack switching. */ | |
5005 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { | |
5006 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
5007 | } | |
5008 | ||
5009 | return ((sp - frame_size) & -8UL); | |
5010 | } | |
5011 | ||
5012 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 5013 | target_sigset_t *set, CPUM68KState *env) |
492a8744 LV |
5014 | { |
5015 | struct target_sigframe *frame; | |
5016 | abi_ulong frame_addr; | |
5017 | abi_ulong retcode_addr; | |
5018 | abi_ulong sc_addr; | |
492a8744 LV |
5019 | int i; |
5020 | ||
5021 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
c8ee0a44 | 5022 | trace_user_setup_frame(env, frame_addr); |
492a8744 LV |
5023 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
5024 | goto give_sigsegv; | |
5025 | ||
1d8b512b | 5026 | __put_user(sig, &frame->sig); |
492a8744 LV |
5027 | |
5028 | sc_addr = frame_addr + offsetof(struct target_sigframe, sc); | |
1d8b512b | 5029 | __put_user(sc_addr, &frame->psc); |
492a8744 | 5030 | |
41ecc72b | 5031 | setup_sigcontext(&frame->sc, env, set->sig[0]); |
492a8744 LV |
5032 | |
5033 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
0188fadb | 5034 | __put_user(set->sig[i], &frame->extramask[i - 1]); |
492a8744 LV |
5035 | } |
5036 | ||
5037 | /* Set up to return from userspace. */ | |
5038 | ||
5039 | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode); | |
1d8b512b | 5040 | __put_user(retcode_addr, &frame->pretcode); |
492a8744 LV |
5041 | |
5042 | /* moveq #,d0; trap #0 */ | |
5043 | ||
1d8b512b | 5044 | __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16), |
1669add7 | 5045 | (uint32_t *)(frame->retcode)); |
492a8744 | 5046 | |
492a8744 LV |
5047 | /* Set up to return from userspace */ |
5048 | ||
5049 | env->aregs[7] = frame_addr; | |
5050 | env->pc = ka->_sa_handler; | |
5051 | ||
5052 | unlock_user_struct(frame, frame_addr, 1); | |
5053 | return; | |
5054 | ||
5055 | give_sigsegv: | |
66393fb9 | 5056 | force_sig(TARGET_SIGSEGV); |
492a8744 LV |
5057 | } |
5058 | ||
7181155d | 5059 | static inline int target_rt_setup_ucontext(struct target_ucontext *uc, |
05390248 | 5060 | CPUM68KState *env) |
7181155d | 5061 | { |
60e99246 | 5062 | target_greg_t *gregs = uc->tuc_mcontext.gregs; |
7181155d | 5063 | |
1d8b512b RV |
5064 | __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version); |
5065 | __put_user(env->dregs[0], &gregs[0]); | |
5066 | __put_user(env->dregs[1], &gregs[1]); | |
5067 | __put_user(env->dregs[2], &gregs[2]); | |
5068 | __put_user(env->dregs[3], &gregs[3]); | |
5069 | __put_user(env->dregs[4], &gregs[4]); | |
5070 | __put_user(env->dregs[5], &gregs[5]); | |
5071 | __put_user(env->dregs[6], &gregs[6]); | |
5072 | __put_user(env->dregs[7], &gregs[7]); | |
5073 | __put_user(env->aregs[0], &gregs[8]); | |
5074 | __put_user(env->aregs[1], &gregs[9]); | |
5075 | __put_user(env->aregs[2], &gregs[10]); | |
5076 | __put_user(env->aregs[3], &gregs[11]); | |
5077 | __put_user(env->aregs[4], &gregs[12]); | |
5078 | __put_user(env->aregs[5], &gregs[13]); | |
5079 | __put_user(env->aregs[6], &gregs[14]); | |
5080 | __put_user(env->aregs[7], &gregs[15]); | |
5081 | __put_user(env->pc, &gregs[16]); | |
5082 | __put_user(env->sr, &gregs[17]); | |
7181155d | 5083 | |
1d8b512b | 5084 | return 0; |
7181155d LV |
5085 | } |
5086 | ||
05390248 | 5087 | static inline int target_rt_restore_ucontext(CPUM68KState *env, |
7181155d LV |
5088 | struct target_ucontext *uc, |
5089 | int *pd0) | |
5090 | { | |
5091 | int temp; | |
60e99246 | 5092 | target_greg_t *gregs = uc->tuc_mcontext.gregs; |
7181155d | 5093 | |
1d8b512b | 5094 | __get_user(temp, &uc->tuc_mcontext.version); |
7181155d LV |
5095 | if (temp != TARGET_MCONTEXT_VERSION) |
5096 | goto badframe; | |
5097 | ||
5098 | /* restore passed registers */ | |
1d8b512b RV |
5099 | __get_user(env->dregs[0], &gregs[0]); |
5100 | __get_user(env->dregs[1], &gregs[1]); | |
5101 | __get_user(env->dregs[2], &gregs[2]); | |
5102 | __get_user(env->dregs[3], &gregs[3]); | |
5103 | __get_user(env->dregs[4], &gregs[4]); | |
5104 | __get_user(env->dregs[5], &gregs[5]); | |
5105 | __get_user(env->dregs[6], &gregs[6]); | |
5106 | __get_user(env->dregs[7], &gregs[7]); | |
5107 | __get_user(env->aregs[0], &gregs[8]); | |
5108 | __get_user(env->aregs[1], &gregs[9]); | |
5109 | __get_user(env->aregs[2], &gregs[10]); | |
5110 | __get_user(env->aregs[3], &gregs[11]); | |
5111 | __get_user(env->aregs[4], &gregs[12]); | |
5112 | __get_user(env->aregs[5], &gregs[13]); | |
5113 | __get_user(env->aregs[6], &gregs[14]); | |
5114 | __get_user(env->aregs[7], &gregs[15]); | |
5115 | __get_user(env->pc, &gregs[16]); | |
5116 | __get_user(temp, &gregs[17]); | |
7181155d LV |
5117 | env->sr = (env->sr & 0xff00) | (temp & 0xff); |
5118 | ||
5119 | *pd0 = env->dregs[0]; | |
1d8b512b | 5120 | return 0; |
7181155d LV |
5121 | |
5122 | badframe: | |
5123 | return 1; | |
5124 | } | |
5125 | ||
492a8744 | 5126 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 5127 | target_siginfo_t *info, |
05390248 | 5128 | target_sigset_t *set, CPUM68KState *env) |
492a8744 | 5129 | { |
7181155d LV |
5130 | struct target_rt_sigframe *frame; |
5131 | abi_ulong frame_addr; | |
5132 | abi_ulong retcode_addr; | |
5133 | abi_ulong info_addr; | |
5134 | abi_ulong uc_addr; | |
5135 | int err = 0; | |
5136 | int i; | |
5137 | ||
5138 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
c8ee0a44 | 5139 | trace_user_setup_rt_frame(env, frame_addr); |
7181155d LV |
5140 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
5141 | goto give_sigsegv; | |
5142 | ||
1d8b512b | 5143 | __put_user(sig, &frame->sig); |
7181155d LV |
5144 | |
5145 | info_addr = frame_addr + offsetof(struct target_rt_sigframe, info); | |
1d8b512b | 5146 | __put_user(info_addr, &frame->pinfo); |
7181155d LV |
5147 | |
5148 | uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
1d8b512b | 5149 | __put_user(uc_addr, &frame->puc); |
7181155d | 5150 | |
f6c7a05b | 5151 | tswap_siginfo(&frame->info, info); |
7181155d LV |
5152 | |
5153 | /* Create the ucontext */ | |
5154 | ||
1d8b512b RV |
5155 | __put_user(0, &frame->uc.tuc_flags); |
5156 | __put_user(0, &frame->uc.tuc_link); | |
5157 | __put_user(target_sigaltstack_used.ss_sp, | |
5158 | &frame->uc.tuc_stack.ss_sp); | |
5159 | __put_user(sas_ss_flags(env->aregs[7]), | |
5160 | &frame->uc.tuc_stack.ss_flags); | |
5161 | __put_user(target_sigaltstack_used.ss_size, | |
5162 | &frame->uc.tuc_stack.ss_size); | |
7181155d LV |
5163 | err |= target_rt_setup_ucontext(&frame->uc, env); |
5164 | ||
5165 | if (err) | |
5166 | goto give_sigsegv; | |
5167 | ||
5168 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
0188fadb | 5169 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
7181155d LV |
5170 | } |
5171 | ||
5172 | /* Set up to return from userspace. */ | |
5173 | ||
5174 | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode); | |
1d8b512b | 5175 | __put_user(retcode_addr, &frame->pretcode); |
7181155d LV |
5176 | |
5177 | /* moveq #,d0; notb d0; trap #0 */ | |
5178 | ||
1d8b512b | 5179 | __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16), |
1669add7 PM |
5180 | (uint32_t *)(frame->retcode + 0)); |
5181 | __put_user(0x4e40, (uint16_t *)(frame->retcode + 4)); | |
7181155d LV |
5182 | |
5183 | if (err) | |
5184 | goto give_sigsegv; | |
5185 | ||
5186 | /* Set up to return from userspace */ | |
5187 | ||
5188 | env->aregs[7] = frame_addr; | |
5189 | env->pc = ka->_sa_handler; | |
5190 | ||
5191 | unlock_user_struct(frame, frame_addr, 1); | |
5192 | return; | |
5193 | ||
5194 | give_sigsegv: | |
5195 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 5196 | force_sig(TARGET_SIGSEGV); |
492a8744 LV |
5197 | } |
5198 | ||
05390248 | 5199 | long do_sigreturn(CPUM68KState *env) |
492a8744 LV |
5200 | { |
5201 | struct target_sigframe *frame; | |
5202 | abi_ulong frame_addr = env->aregs[7] - 4; | |
c227f099 | 5203 | target_sigset_t target_set; |
492a8744 LV |
5204 | sigset_t set; |
5205 | int d0, i; | |
5206 | ||
c8ee0a44 | 5207 | trace_user_do_sigreturn(env, frame_addr); |
492a8744 LV |
5208 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
5209 | goto badframe; | |
5210 | ||
5211 | /* set blocked signals */ | |
5212 | ||
f5f601af | 5213 | __get_user(target_set.sig[0], &frame->sc.sc_mask); |
492a8744 LV |
5214 | |
5215 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
f5f601af | 5216 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
492a8744 LV |
5217 | } |
5218 | ||
5219 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 5220 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
492a8744 LV |
5221 | |
5222 | /* restore registers */ | |
5223 | ||
016d2e1d | 5224 | restore_sigcontext(env, &frame->sc, &d0); |
492a8744 LV |
5225 | |
5226 | unlock_user_struct(frame, frame_addr, 0); | |
5227 | return d0; | |
5228 | ||
5229 | badframe: | |
492a8744 LV |
5230 | force_sig(TARGET_SIGSEGV); |
5231 | return 0; | |
5232 | } | |
5233 | ||
05390248 | 5234 | long do_rt_sigreturn(CPUM68KState *env) |
492a8744 | 5235 | { |
7181155d LV |
5236 | struct target_rt_sigframe *frame; |
5237 | abi_ulong frame_addr = env->aregs[7] - 4; | |
c227f099 | 5238 | target_sigset_t target_set; |
7181155d LV |
5239 | sigset_t set; |
5240 | int d0; | |
5241 | ||
c8ee0a44 | 5242 | trace_user_do_rt_sigreturn(env, frame_addr); |
7181155d LV |
5243 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
5244 | goto badframe; | |
5245 | ||
5246 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 5247 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
7181155d LV |
5248 | |
5249 | /* restore registers */ | |
5250 | ||
5251 | if (target_rt_restore_ucontext(env, &frame->uc, &d0)) | |
5252 | goto badframe; | |
5253 | ||
5254 | if (do_sigaltstack(frame_addr + | |
60e99246 | 5255 | offsetof(struct target_rt_sigframe, uc.tuc_stack), |
7181155d LV |
5256 | 0, get_sp_from_cpustate(env)) == -EFAULT) |
5257 | goto badframe; | |
5258 | ||
5259 | unlock_user_struct(frame, frame_addr, 0); | |
5260 | return d0; | |
5261 | ||
5262 | badframe: | |
5263 | unlock_user_struct(frame, frame_addr, 0); | |
5264 | force_sig(TARGET_SIGSEGV); | |
5265 | return 0; | |
492a8744 LV |
5266 | } |
5267 | ||
6049f4f8 RH |
5268 | #elif defined(TARGET_ALPHA) |
5269 | ||
5270 | struct target_sigcontext { | |
5271 | abi_long sc_onstack; | |
5272 | abi_long sc_mask; | |
5273 | abi_long sc_pc; | |
5274 | abi_long sc_ps; | |
5275 | abi_long sc_regs[32]; | |
5276 | abi_long sc_ownedfp; | |
5277 | abi_long sc_fpregs[32]; | |
5278 | abi_ulong sc_fpcr; | |
5279 | abi_ulong sc_fp_control; | |
5280 | abi_ulong sc_reserved1; | |
5281 | abi_ulong sc_reserved2; | |
5282 | abi_ulong sc_ssize; | |
5283 | abi_ulong sc_sbase; | |
5284 | abi_ulong sc_traparg_a0; | |
5285 | abi_ulong sc_traparg_a1; | |
5286 | abi_ulong sc_traparg_a2; | |
5287 | abi_ulong sc_fp_trap_pc; | |
5288 | abi_ulong sc_fp_trigger_sum; | |
5289 | abi_ulong sc_fp_trigger_inst; | |
5290 | }; | |
5291 | ||
5292 | struct target_ucontext { | |
60e99246 AJ |
5293 | abi_ulong tuc_flags; |
5294 | abi_ulong tuc_link; | |
5295 | abi_ulong tuc_osf_sigmask; | |
5296 | target_stack_t tuc_stack; | |
5297 | struct target_sigcontext tuc_mcontext; | |
5298 | target_sigset_t tuc_sigmask; | |
6049f4f8 RH |
5299 | }; |
5300 | ||
5301 | struct target_sigframe { | |
5302 | struct target_sigcontext sc; | |
5303 | unsigned int retcode[3]; | |
5304 | }; | |
5305 | ||
5306 | struct target_rt_sigframe { | |
5307 | target_siginfo_t info; | |
5308 | struct target_ucontext uc; | |
5309 | unsigned int retcode[3]; | |
5310 | }; | |
5311 | ||
5312 | #define INSN_MOV_R30_R16 0x47fe0410 | |
5313 | #define INSN_LDI_R0 0x201f0000 | |
5314 | #define INSN_CALLSYS 0x00000083 | |
5315 | ||
41ecc72b | 5316 | static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env, |
6049f4f8 RH |
5317 | abi_ulong frame_addr, target_sigset_t *set) |
5318 | { | |
41ecc72b | 5319 | int i; |
6049f4f8 | 5320 | |
1d8b512b RV |
5321 | __put_user(on_sig_stack(frame_addr), &sc->sc_onstack); |
5322 | __put_user(set->sig[0], &sc->sc_mask); | |
5323 | __put_user(env->pc, &sc->sc_pc); | |
5324 | __put_user(8, &sc->sc_ps); | |
6049f4f8 RH |
5325 | |
5326 | for (i = 0; i < 31; ++i) { | |
1d8b512b | 5327 | __put_user(env->ir[i], &sc->sc_regs[i]); |
6049f4f8 | 5328 | } |
1d8b512b | 5329 | __put_user(0, &sc->sc_regs[31]); |
6049f4f8 RH |
5330 | |
5331 | for (i = 0; i < 31; ++i) { | |
1d8b512b | 5332 | __put_user(env->fir[i], &sc->sc_fpregs[i]); |
6049f4f8 | 5333 | } |
1d8b512b RV |
5334 | __put_user(0, &sc->sc_fpregs[31]); |
5335 | __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr); | |
6049f4f8 | 5336 | |
1d8b512b RV |
5337 | __put_user(0, &sc->sc_traparg_a0); /* FIXME */ |
5338 | __put_user(0, &sc->sc_traparg_a1); /* FIXME */ | |
5339 | __put_user(0, &sc->sc_traparg_a2); /* FIXME */ | |
6049f4f8 RH |
5340 | } |
5341 | ||
016d2e1d | 5342 | static void restore_sigcontext(CPUAlphaState *env, |
05390248 | 5343 | struct target_sigcontext *sc) |
6049f4f8 RH |
5344 | { |
5345 | uint64_t fpcr; | |
016d2e1d | 5346 | int i; |
6049f4f8 | 5347 | |
1d8b512b | 5348 | __get_user(env->pc, &sc->sc_pc); |
6049f4f8 RH |
5349 | |
5350 | for (i = 0; i < 31; ++i) { | |
1d8b512b | 5351 | __get_user(env->ir[i], &sc->sc_regs[i]); |
6049f4f8 RH |
5352 | } |
5353 | for (i = 0; i < 31; ++i) { | |
1d8b512b | 5354 | __get_user(env->fir[i], &sc->sc_fpregs[i]); |
6049f4f8 RH |
5355 | } |
5356 | ||
1d8b512b | 5357 | __get_user(fpcr, &sc->sc_fpcr); |
6049f4f8 | 5358 | cpu_alpha_store_fpcr(env, fpcr); |
6049f4f8 RH |
5359 | } |
5360 | ||
5361 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, | |
05390248 AF |
5362 | CPUAlphaState *env, |
5363 | unsigned long framesize) | |
6049f4f8 RH |
5364 | { |
5365 | abi_ulong sp = env->ir[IR_SP]; | |
5366 | ||
5367 | /* This is the X/Open sanctioned signal stack switching. */ | |
5368 | if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) { | |
5369 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
5370 | } | |
5371 | return (sp - framesize) & -32; | |
5372 | } | |
5373 | ||
5374 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 5375 | target_sigset_t *set, CPUAlphaState *env) |
6049f4f8 RH |
5376 | { |
5377 | abi_ulong frame_addr, r26; | |
5378 | struct target_sigframe *frame; | |
5379 | int err = 0; | |
5380 | ||
5381 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
c8ee0a44 | 5382 | trace_user_setup_frame(env, frame_addr); |
6049f4f8 RH |
5383 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { |
5384 | goto give_sigsegv; | |
5385 | } | |
5386 | ||
41ecc72b | 5387 | setup_sigcontext(&frame->sc, env, frame_addr, set); |
6049f4f8 RH |
5388 | |
5389 | if (ka->sa_restorer) { | |
5390 | r26 = ka->sa_restorer; | |
5391 | } else { | |
1d8b512b RV |
5392 | __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); |
5393 | __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn, | |
5394 | &frame->retcode[1]); | |
5395 | __put_user(INSN_CALLSYS, &frame->retcode[2]); | |
6049f4f8 RH |
5396 | /* imb() */ |
5397 | r26 = frame_addr; | |
5398 | } | |
5399 | ||
5400 | unlock_user_struct(frame, frame_addr, 1); | |
5401 | ||
5402 | if (err) { | |
5403 | give_sigsegv: | |
5404 | if (sig == TARGET_SIGSEGV) { | |
5405 | ka->_sa_handler = TARGET_SIG_DFL; | |
5406 | } | |
5407 | force_sig(TARGET_SIGSEGV); | |
5408 | } | |
5409 | ||
5410 | env->ir[IR_RA] = r26; | |
5411 | env->ir[IR_PV] = env->pc = ka->_sa_handler; | |
5412 | env->ir[IR_A0] = sig; | |
5413 | env->ir[IR_A1] = 0; | |
5414 | env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc); | |
5415 | env->ir[IR_SP] = frame_addr; | |
5416 | } | |
5417 | ||
5418 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
5419 | target_siginfo_t *info, | |
05390248 | 5420 | target_sigset_t *set, CPUAlphaState *env) |
6049f4f8 RH |
5421 | { |
5422 | abi_ulong frame_addr, r26; | |
5423 | struct target_rt_sigframe *frame; | |
5424 | int i, err = 0; | |
5425 | ||
5426 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
c8ee0a44 | 5427 | trace_user_setup_rt_frame(env, frame_addr); |
6049f4f8 RH |
5428 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { |
5429 | goto give_sigsegv; | |
5430 | } | |
5431 | ||
f6c7a05b | 5432 | tswap_siginfo(&frame->info, info); |
6049f4f8 | 5433 | |
1d8b512b RV |
5434 | __put_user(0, &frame->uc.tuc_flags); |
5435 | __put_user(0, &frame->uc.tuc_link); | |
5436 | __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask); | |
5437 | __put_user(target_sigaltstack_used.ss_sp, | |
5438 | &frame->uc.tuc_stack.ss_sp); | |
5439 | __put_user(sas_ss_flags(env->ir[IR_SP]), | |
5440 | &frame->uc.tuc_stack.ss_flags); | |
5441 | __put_user(target_sigaltstack_used.ss_size, | |
5442 | &frame->uc.tuc_stack.ss_size); | |
41ecc72b | 5443 | setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set); |
6049f4f8 | 5444 | for (i = 0; i < TARGET_NSIG_WORDS; ++i) { |
1d8b512b | 5445 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
6049f4f8 RH |
5446 | } |
5447 | ||
5448 | if (ka->sa_restorer) { | |
5449 | r26 = ka->sa_restorer; | |
5450 | } else { | |
1d8b512b RV |
5451 | __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); |
5452 | __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn, | |
5453 | &frame->retcode[1]); | |
5454 | __put_user(INSN_CALLSYS, &frame->retcode[2]); | |
6049f4f8 RH |
5455 | /* imb(); */ |
5456 | r26 = frame_addr; | |
5457 | } | |
5458 | ||
5459 | if (err) { | |
5460 | give_sigsegv: | |
5461 | if (sig == TARGET_SIGSEGV) { | |
5462 | ka->_sa_handler = TARGET_SIG_DFL; | |
5463 | } | |
5464 | force_sig(TARGET_SIGSEGV); | |
5465 | } | |
5466 | ||
5467 | env->ir[IR_RA] = r26; | |
5468 | env->ir[IR_PV] = env->pc = ka->_sa_handler; | |
5469 | env->ir[IR_A0] = sig; | |
5470 | env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info); | |
5471 | env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
5472 | env->ir[IR_SP] = frame_addr; | |
5473 | } | |
5474 | ||
05390248 | 5475 | long do_sigreturn(CPUAlphaState *env) |
6049f4f8 RH |
5476 | { |
5477 | struct target_sigcontext *sc; | |
5478 | abi_ulong sc_addr = env->ir[IR_A0]; | |
5479 | target_sigset_t target_set; | |
5480 | sigset_t set; | |
5481 | ||
5482 | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) { | |
5483 | goto badframe; | |
5484 | } | |
5485 | ||
5486 | target_sigemptyset(&target_set); | |
f5f601af | 5487 | __get_user(target_set.sig[0], &sc->sc_mask); |
6049f4f8 RH |
5488 | |
5489 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 5490 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
6049f4f8 | 5491 | |
016d2e1d | 5492 | restore_sigcontext(env, sc); |
6049f4f8 RH |
5493 | unlock_user_struct(sc, sc_addr, 0); |
5494 | return env->ir[IR_V0]; | |
5495 | ||
5496 | badframe: | |
6049f4f8 RH |
5497 | force_sig(TARGET_SIGSEGV); |
5498 | } | |
5499 | ||
05390248 | 5500 | long do_rt_sigreturn(CPUAlphaState *env) |
6049f4f8 RH |
5501 | { |
5502 | abi_ulong frame_addr = env->ir[IR_A0]; | |
5503 | struct target_rt_sigframe *frame; | |
5504 | sigset_t set; | |
5505 | ||
c8ee0a44 | 5506 | trace_user_do_rt_sigreturn(env, frame_addr); |
6049f4f8 RH |
5507 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { |
5508 | goto badframe; | |
5509 | } | |
60e99246 | 5510 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
1c275925 | 5511 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
6049f4f8 | 5512 | |
016d2e1d | 5513 | restore_sigcontext(env, &frame->uc.tuc_mcontext); |
6049f4f8 | 5514 | if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe, |
60e99246 | 5515 | uc.tuc_stack), |
6049f4f8 RH |
5516 | 0, env->ir[IR_SP]) == -EFAULT) { |
5517 | goto badframe; | |
5518 | } | |
5519 | ||
5520 | unlock_user_struct(frame, frame_addr, 0); | |
5521 | return env->ir[IR_V0]; | |
5522 | ||
5523 | ||
5524 | badframe: | |
5525 | unlock_user_struct(frame, frame_addr, 0); | |
5526 | force_sig(TARGET_SIGSEGV); | |
5527 | } | |
5528 | ||
bf0f60a6 CG |
5529 | #elif defined(TARGET_TILEGX) |
5530 | ||
5531 | struct target_sigcontext { | |
5532 | union { | |
5533 | /* General-purpose registers. */ | |
5534 | abi_ulong gregs[56]; | |
5535 | struct { | |
5536 | abi_ulong __gregs[53]; | |
5537 | abi_ulong tp; /* Aliases gregs[TREG_TP]. */ | |
5538 | abi_ulong sp; /* Aliases gregs[TREG_SP]. */ | |
5539 | abi_ulong lr; /* Aliases gregs[TREG_LR]. */ | |
5540 | }; | |
5541 | }; | |
5542 | abi_ulong pc; /* Program counter. */ | |
5543 | abi_ulong ics; /* In Interrupt Critical Section? */ | |
5544 | abi_ulong faultnum; /* Fault number. */ | |
5545 | abi_ulong pad[5]; | |
5546 | }; | |
5547 | ||
5548 | struct target_ucontext { | |
5549 | abi_ulong tuc_flags; | |
5550 | abi_ulong tuc_link; | |
5551 | target_stack_t tuc_stack; | |
5552 | struct target_sigcontext tuc_mcontext; | |
5553 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
5554 | }; | |
5555 | ||
5556 | struct target_rt_sigframe { | |
5557 | unsigned char save_area[16]; /* caller save area */ | |
5558 | struct target_siginfo info; | |
5559 | struct target_ucontext uc; | |
5560 | }; | |
5561 | ||
5562 | static void setup_sigcontext(struct target_sigcontext *sc, | |
5563 | CPUArchState *env, int signo) | |
5564 | { | |
5565 | int i; | |
5566 | ||
5567 | for (i = 0; i < TILEGX_R_COUNT; ++i) { | |
5568 | __put_user(env->regs[i], &sc->gregs[i]); | |
5569 | } | |
5570 | ||
5571 | __put_user(env->pc, &sc->pc); | |
5572 | __put_user(0, &sc->ics); | |
5573 | __put_user(signo, &sc->faultnum); | |
5574 | } | |
5575 | ||
5576 | static void restore_sigcontext(CPUTLGState *env, struct target_sigcontext *sc) | |
5577 | { | |
5578 | int i; | |
5579 | ||
5580 | for (i = 0; i < TILEGX_R_COUNT; ++i) { | |
5581 | __get_user(env->regs[i], &sc->gregs[i]); | |
5582 | } | |
5583 | ||
5584 | __get_user(env->pc, &sc->pc); | |
5585 | } | |
5586 | ||
5587 | static abi_ulong get_sigframe(struct target_sigaction *ka, CPUArchState *env, | |
5588 | size_t frame_size) | |
5589 | { | |
5590 | unsigned long sp = env->regs[TILEGX_R_SP]; | |
5591 | ||
5592 | if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) { | |
5593 | return -1UL; | |
5594 | } | |
5595 | ||
5596 | if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) { | |
5597 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
5598 | } | |
5599 | ||
5600 | sp -= frame_size; | |
5601 | sp &= -16UL; | |
5602 | return sp; | |
5603 | } | |
5604 | ||
5605 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
5606 | target_siginfo_t *info, | |
5607 | target_sigset_t *set, CPUArchState *env) | |
5608 | { | |
5609 | abi_ulong frame_addr; | |
5610 | struct target_rt_sigframe *frame; | |
5611 | unsigned long restorer; | |
5612 | ||
5613 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
c8ee0a44 | 5614 | trace_user_setup_rt_frame(env, frame_addr); |
bf0f60a6 CG |
5615 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { |
5616 | goto give_sigsegv; | |
5617 | } | |
5618 | ||
5619 | /* Always write at least the signal number for the stack backtracer. */ | |
5620 | if (ka->sa_flags & TARGET_SA_SIGINFO) { | |
5621 | /* At sigreturn time, restore the callee-save registers too. */ | |
5622 | tswap_siginfo(&frame->info, info); | |
5623 | /* regs->flags |= PT_FLAGS_RESTORE_REGS; FIXME: we can skip it? */ | |
5624 | } else { | |
5625 | __put_user(info->si_signo, &frame->info.si_signo); | |
5626 | } | |
5627 | ||
5628 | /* Create the ucontext. */ | |
5629 | __put_user(0, &frame->uc.tuc_flags); | |
5630 | __put_user(0, &frame->uc.tuc_link); | |
5631 | __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp); | |
5632 | __put_user(sas_ss_flags(env->regs[TILEGX_R_SP]), | |
5633 | &frame->uc.tuc_stack.ss_flags); | |
5634 | __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size); | |
5635 | setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo); | |
5636 | ||
5637 | restorer = (unsigned long) do_rt_sigreturn; | |
5638 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
5639 | restorer = (unsigned long) ka->sa_restorer; | |
5640 | } | |
5641 | env->pc = (unsigned long) ka->_sa_handler; | |
5642 | env->regs[TILEGX_R_SP] = (unsigned long) frame; | |
5643 | env->regs[TILEGX_R_LR] = restorer; | |
5644 | env->regs[0] = (unsigned long) sig; | |
5645 | env->regs[1] = (unsigned long) &frame->info; | |
5646 | env->regs[2] = (unsigned long) &frame->uc; | |
5647 | /* regs->flags |= PT_FLAGS_CALLER_SAVES; FIXME: we can skip it? */ | |
5648 | ||
5649 | unlock_user_struct(frame, frame_addr, 1); | |
5650 | return; | |
5651 | ||
5652 | give_sigsegv: | |
5653 | if (sig == TARGET_SIGSEGV) { | |
5654 | ka->_sa_handler = TARGET_SIG_DFL; | |
5655 | } | |
5656 | force_sig(TARGET_SIGSEGV /* , current */); | |
5657 | } | |
5658 | ||
5659 | long do_rt_sigreturn(CPUTLGState *env) | |
5660 | { | |
5661 | abi_ulong frame_addr = env->regs[TILEGX_R_SP]; | |
5662 | struct target_rt_sigframe *frame; | |
5663 | sigset_t set; | |
5664 | ||
c8ee0a44 | 5665 | trace_user_do_rt_sigreturn(env, frame_addr); |
bf0f60a6 CG |
5666 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { |
5667 | goto badframe; | |
5668 | } | |
5669 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); | |
5670 | do_sigprocmask(SIG_SETMASK, &set, NULL); | |
5671 | ||
5672 | restore_sigcontext(env, &frame->uc.tuc_mcontext); | |
5673 | if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe, | |
5674 | uc.tuc_stack), | |
5675 | 0, env->regs[TILEGX_R_SP]) == -EFAULT) { | |
5676 | goto badframe; | |
5677 | } | |
5678 | ||
5679 | unlock_user_struct(frame, frame_addr, 0); | |
5680 | return env->regs[TILEGX_R_RE]; | |
5681 | ||
5682 | ||
5683 | badframe: | |
5684 | unlock_user_struct(frame, frame_addr, 0); | |
5685 | force_sig(TARGET_SIGSEGV); | |
5686 | } | |
5687 | ||
b346ff46 FB |
5688 | #else |
5689 | ||
624f7979 | 5690 | static void setup_frame(int sig, struct target_sigaction *ka, |
9349b4f9 | 5691 | target_sigset_t *set, CPUArchState *env) |
b346ff46 FB |
5692 | { |
5693 | fprintf(stderr, "setup_frame: not implemented\n"); | |
5694 | } | |
5695 | ||
624f7979 | 5696 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 5697 | target_siginfo_t *info, |
9349b4f9 | 5698 | target_sigset_t *set, CPUArchState *env) |
b346ff46 FB |
5699 | { |
5700 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
5701 | } | |
5702 | ||
9349b4f9 | 5703 | long do_sigreturn(CPUArchState *env) |
b346ff46 FB |
5704 | { |
5705 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 5706 | return -TARGET_ENOSYS; |
b346ff46 FB |
5707 | } |
5708 | ||
9349b4f9 | 5709 | long do_rt_sigreturn(CPUArchState *env) |
b346ff46 FB |
5710 | { |
5711 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 5712 | return -TARGET_ENOSYS; |
b346ff46 FB |
5713 | } |
5714 | ||
66fb9763 FB |
5715 | #endif |
5716 | ||
9349b4f9 | 5717 | void process_pending_signals(CPUArchState *cpu_env) |
66fb9763 | 5718 | { |
db6b81d4 | 5719 | CPUState *cpu = ENV_GET_CPU(cpu_env); |
66fb9763 | 5720 | int sig; |
992f48a0 | 5721 | abi_ulong handler; |
9de5e440 | 5722 | sigset_t set, old_set; |
c227f099 | 5723 | target_sigset_t target_old_set; |
624f7979 PB |
5724 | struct emulated_sigtable *k; |
5725 | struct target_sigaction *sa; | |
66fb9763 | 5726 | struct sigqueue *q; |
0429a971 | 5727 | TaskState *ts = cpu->opaque; |
3b46e624 | 5728 | |
624f7979 | 5729 | if (!ts->signal_pending) |
31e31b8a FB |
5730 | return; |
5731 | ||
624f7979 PB |
5732 | /* FIXME: This is not threadsafe. */ |
5733 | k = ts->sigtab; | |
66fb9763 FB |
5734 | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
5735 | if (k->pending) | |
31e31b8a | 5736 | goto handle_signal; |
66fb9763 | 5737 | k++; |
31e31b8a FB |
5738 | } |
5739 | /* if no signal is pending, just return */ | |
624f7979 | 5740 | ts->signal_pending = 0; |
31e31b8a | 5741 | return; |
66fb9763 | 5742 | |
31e31b8a | 5743 | handle_signal: |
c8ee0a44 | 5744 | trace_user_handle_signal(cpu_env, sig); |
66fb9763 FB |
5745 | /* dequeue signal */ |
5746 | q = k->first; | |
5747 | k->first = q->next; | |
5748 | if (!k->first) | |
5749 | k->pending = 0; | |
3b46e624 | 5750 | |
db6b81d4 | 5751 | sig = gdb_handlesig(cpu, sig); |
1fddef4b | 5752 | if (!sig) { |
ca587a8e AJ |
5753 | sa = NULL; |
5754 | handler = TARGET_SIG_IGN; | |
5755 | } else { | |
5756 | sa = &sigact_table[sig - 1]; | |
5757 | handler = sa->_sa_handler; | |
1fddef4b | 5758 | } |
66fb9763 | 5759 | |
a7ec0f98 PM |
5760 | if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) { |
5761 | /* Guest has blocked SIGSEGV but we got one anyway. Assume this | |
5762 | * is a forced SIGSEGV (ie one the kernel handles via force_sig_info | |
5763 | * because it got a real MMU fault), and treat as if default handler. | |
5764 | */ | |
5765 | handler = TARGET_SIG_DFL; | |
5766 | } | |
5767 | ||
66fb9763 | 5768 | if (handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
5769 | /* default handler : ignore some signal. The other are job control or fatal */ |
5770 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { | |
5771 | kill(getpid(),SIGSTOP); | |
5772 | } else if (sig != TARGET_SIGCHLD && | |
5773 | sig != TARGET_SIGURG && | |
5774 | sig != TARGET_SIGWINCH && | |
5775 | sig != TARGET_SIGCONT) { | |
66fb9763 FB |
5776 | force_sig(sig); |
5777 | } | |
5778 | } else if (handler == TARGET_SIG_IGN) { | |
5779 | /* ignore sig */ | |
5780 | } else if (handler == TARGET_SIG_ERR) { | |
5781 | force_sig(sig); | |
5782 | } else { | |
9de5e440 | 5783 | /* compute the blocked signals during the handler execution */ |
624f7979 | 5784 | target_to_host_sigset(&set, &sa->sa_mask); |
9de5e440 FB |
5785 | /* SA_NODEFER indicates that the current signal should not be |
5786 | blocked during the handler */ | |
624f7979 | 5787 | if (!(sa->sa_flags & TARGET_SA_NODEFER)) |
9de5e440 | 5788 | sigaddset(&set, target_to_host_signal(sig)); |
3b46e624 | 5789 | |
9de5e440 | 5790 | /* block signals in the handler using Linux */ |
1c275925 | 5791 | do_sigprocmask(SIG_BLOCK, &set, &old_set); |
9de5e440 FB |
5792 | /* save the previous blocked signal state to restore it at the |
5793 | end of the signal execution (see do_sigreturn) */ | |
9231944d | 5794 | host_to_target_sigset_internal(&target_old_set, &old_set); |
9de5e440 | 5795 | |
bc8a22cc | 5796 | /* if the CPU is in VM86 mode, we restore the 32 bit values */ |
84409ddb | 5797 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
bc8a22cc FB |
5798 | { |
5799 | CPUX86State *env = cpu_env; | |
5800 | if (env->eflags & VM_MASK) | |
5801 | save_v86_state(env); | |
5802 | } | |
5803 | #endif | |
9de5e440 | 5804 | /* prepare the stack frame of the virtual CPU */ |
d0924a26 | 5805 | #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64) \ |
bf0f60a6 | 5806 | || defined(TARGET_OPENRISC) || defined(TARGET_TILEGX) |
ff970904 RH |
5807 | /* These targets do not have traditional signals. */ |
5808 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
5809 | #else | |
624f7979 PB |
5810 | if (sa->sa_flags & TARGET_SA_SIGINFO) |
5811 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
66fb9763 | 5812 | else |
624f7979 | 5813 | setup_frame(sig, sa, &target_old_set, cpu_env); |
ff970904 | 5814 | #endif |
624f7979 PB |
5815 | if (sa->sa_flags & TARGET_SA_RESETHAND) |
5816 | sa->_sa_handler = TARGET_SIG_DFL; | |
31e31b8a | 5817 | } |
66fb9763 | 5818 | if (q != &k->info) |
624f7979 | 5819 | free_sigqueue(cpu_env, q); |
66fb9763 | 5820 | } |