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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 FB |
18 | */ |
19 | #include <stdlib.h> | |
20 | #include <stdio.h> | |
66fb9763 | 21 | #include <string.h> |
31e31b8a | 22 | #include <stdarg.h> |
2677e107 | 23 | #include <unistd.h> |
66fb9763 | 24 | #include <errno.h> |
603e4fd7 | 25 | #include <assert.h> |
31e31b8a | 26 | #include <sys/ucontext.h> |
edf8e2af | 27 | #include <sys/resource.h> |
31e31b8a | 28 | |
3ef693a0 | 29 | #include "qemu.h" |
7d99a001 | 30 | #include "qemu-common.h" |
992f48a0 | 31 | #include "target_signal.h" |
66fb9763 FB |
32 | |
33 | //#define DEBUG_SIGNAL | |
34 | ||
249c4c32 | 35 | static struct target_sigaltstack target_sigaltstack_used = { |
a04e134a TS |
36 | .ss_sp = 0, |
37 | .ss_size = 0, | |
38 | .ss_flags = TARGET_SS_DISABLE, | |
39 | }; | |
40 | ||
624f7979 | 41 | static struct target_sigaction sigact_table[TARGET_NSIG]; |
31e31b8a | 42 | |
5fafdf24 | 43 | static void host_signal_handler(int host_signum, siginfo_t *info, |
66fb9763 FB |
44 | void *puc); |
45 | ||
3ca05588 | 46 | static uint8_t host_to_target_signal_table[_NSIG] = { |
9e5f5284 FB |
47 | [SIGHUP] = TARGET_SIGHUP, |
48 | [SIGINT] = TARGET_SIGINT, | |
49 | [SIGQUIT] = TARGET_SIGQUIT, | |
50 | [SIGILL] = TARGET_SIGILL, | |
51 | [SIGTRAP] = TARGET_SIGTRAP, | |
52 | [SIGABRT] = TARGET_SIGABRT, | |
01e3b763 | 53 | /* [SIGIOT] = TARGET_SIGIOT,*/ |
9e5f5284 FB |
54 | [SIGBUS] = TARGET_SIGBUS, |
55 | [SIGFPE] = TARGET_SIGFPE, | |
56 | [SIGKILL] = TARGET_SIGKILL, | |
57 | [SIGUSR1] = TARGET_SIGUSR1, | |
58 | [SIGSEGV] = TARGET_SIGSEGV, | |
59 | [SIGUSR2] = TARGET_SIGUSR2, | |
60 | [SIGPIPE] = TARGET_SIGPIPE, | |
61 | [SIGALRM] = TARGET_SIGALRM, | |
62 | [SIGTERM] = TARGET_SIGTERM, | |
63 | #ifdef SIGSTKFLT | |
64 | [SIGSTKFLT] = TARGET_SIGSTKFLT, | |
65 | #endif | |
66 | [SIGCHLD] = TARGET_SIGCHLD, | |
67 | [SIGCONT] = TARGET_SIGCONT, | |
68 | [SIGSTOP] = TARGET_SIGSTOP, | |
69 | [SIGTSTP] = TARGET_SIGTSTP, | |
70 | [SIGTTIN] = TARGET_SIGTTIN, | |
71 | [SIGTTOU] = TARGET_SIGTTOU, | |
72 | [SIGURG] = TARGET_SIGURG, | |
73 | [SIGXCPU] = TARGET_SIGXCPU, | |
74 | [SIGXFSZ] = TARGET_SIGXFSZ, | |
75 | [SIGVTALRM] = TARGET_SIGVTALRM, | |
76 | [SIGPROF] = TARGET_SIGPROF, | |
77 | [SIGWINCH] = TARGET_SIGWINCH, | |
78 | [SIGIO] = TARGET_SIGIO, | |
79 | [SIGPWR] = TARGET_SIGPWR, | |
80 | [SIGSYS] = TARGET_SIGSYS, | |
81 | /* next signals stay the same */ | |
624f7979 | 82 | /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with |
b4916d7b | 83 | host libpthread signals. This assumes no one actually uses SIGRTMAX :-/ |
624f7979 PB |
84 | To fix this properly we need to do manual signal delivery multiplexed |
85 | over a single host signal. */ | |
86 | [__SIGRTMIN] = __SIGRTMAX, | |
87 | [__SIGRTMAX] = __SIGRTMIN, | |
9e5f5284 | 88 | }; |
3ca05588 | 89 | static uint8_t target_to_host_signal_table[_NSIG]; |
9e5f5284 | 90 | |
a04e134a TS |
91 | static inline int on_sig_stack(unsigned long sp) |
92 | { | |
93 | return (sp - target_sigaltstack_used.ss_sp | |
94 | < target_sigaltstack_used.ss_size); | |
95 | } | |
96 | ||
97 | static inline int sas_ss_flags(unsigned long sp) | |
98 | { | |
99 | return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE | |
100 | : on_sig_stack(sp) ? SS_ONSTACK : 0); | |
101 | } | |
102 | ||
1d9d8b55 | 103 | int host_to_target_signal(int sig) |
31e31b8a | 104 | { |
167c50d8 | 105 | if (sig < 0 || sig >= _NSIG) |
4cb05961 | 106 | return sig; |
9e5f5284 | 107 | return host_to_target_signal_table[sig]; |
31e31b8a FB |
108 | } |
109 | ||
4cb05961 | 110 | int target_to_host_signal(int sig) |
31e31b8a | 111 | { |
167c50d8 | 112 | if (sig < 0 || sig >= _NSIG) |
4cb05961 | 113 | return sig; |
9e5f5284 | 114 | return target_to_host_signal_table[sig]; |
31e31b8a FB |
115 | } |
116 | ||
c227f099 | 117 | static inline void target_sigemptyset(target_sigset_t *set) |
f5545b5c PB |
118 | { |
119 | memset(set, 0, sizeof(*set)); | |
120 | } | |
121 | ||
c227f099 | 122 | static inline void target_sigaddset(target_sigset_t *set, int signum) |
f5545b5c PB |
123 | { |
124 | signum--; | |
125 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
126 | set->sig[signum / TARGET_NSIG_BPW] |= mask; | |
127 | } | |
128 | ||
c227f099 | 129 | static inline int target_sigismember(const target_sigset_t *set, int signum) |
f5545b5c PB |
130 | { |
131 | signum--; | |
132 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
133 | return ((set->sig[signum / TARGET_NSIG_BPW] & mask) != 0); | |
134 | } | |
135 | ||
c227f099 | 136 | static void host_to_target_sigset_internal(target_sigset_t *d, |
9231944d | 137 | const sigset_t *s) |
66fb9763 FB |
138 | { |
139 | int i; | |
f5545b5c PB |
140 | target_sigemptyset(d); |
141 | for (i = 1; i <= TARGET_NSIG; i++) { | |
142 | if (sigismember(s, i)) { | |
143 | target_sigaddset(d, host_to_target_signal(i)); | |
144 | } | |
66fb9763 FB |
145 | } |
146 | } | |
147 | ||
c227f099 | 148 | void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) |
9231944d | 149 | { |
c227f099 | 150 | target_sigset_t d1; |
9231944d FB |
151 | int i; |
152 | ||
153 | host_to_target_sigset_internal(&d1, s); | |
154 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
cbb21eed | 155 | d->sig[i] = tswapal(d1.sig[i]); |
9231944d FB |
156 | } |
157 | ||
8fcd3692 | 158 | static void target_to_host_sigset_internal(sigset_t *d, |
c227f099 | 159 | const target_sigset_t *s) |
66fb9763 FB |
160 | { |
161 | int i; | |
f5545b5c PB |
162 | sigemptyset(d); |
163 | for (i = 1; i <= TARGET_NSIG; i++) { | |
164 | if (target_sigismember(s, i)) { | |
165 | sigaddset(d, target_to_host_signal(i)); | |
166 | } | |
167 | } | |
66fb9763 FB |
168 | } |
169 | ||
c227f099 | 170 | void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) |
9231944d | 171 | { |
c227f099 | 172 | target_sigset_t s1; |
9231944d FB |
173 | int i; |
174 | ||
175 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
cbb21eed | 176 | s1.sig[i] = tswapal(s->sig[i]); |
9231944d FB |
177 | target_to_host_sigset_internal(d, &s1); |
178 | } | |
3b46e624 | 179 | |
992f48a0 | 180 | void host_to_target_old_sigset(abi_ulong *old_sigset, |
66fb9763 FB |
181 | const sigset_t *sigset) |
182 | { | |
c227f099 | 183 | target_sigset_t d; |
9e5f5284 FB |
184 | host_to_target_sigset(&d, sigset); |
185 | *old_sigset = d.sig[0]; | |
66fb9763 FB |
186 | } |
187 | ||
5fafdf24 | 188 | void target_to_host_old_sigset(sigset_t *sigset, |
992f48a0 | 189 | const abi_ulong *old_sigset) |
66fb9763 | 190 | { |
c227f099 | 191 | target_sigset_t d; |
9e5f5284 FB |
192 | int i; |
193 | ||
194 | d.sig[0] = *old_sigset; | |
195 | for(i = 1;i < TARGET_NSIG_WORDS; i++) | |
196 | d.sig[i] = 0; | |
197 | target_to_host_sigset(sigset, &d); | |
66fb9763 FB |
198 | } |
199 | ||
1c275925 AB |
200 | /* Wrapper for sigprocmask function |
201 | * Emulates a sigprocmask in a safe way for the guest. Note that set and oldset | |
202 | * are host signal set, not guest ones. This wraps the sigprocmask host calls | |
203 | * that should be protected (calls originated from guest) | |
204 | */ | |
205 | int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset) | |
206 | { | |
a7ec0f98 PM |
207 | int ret; |
208 | sigset_t val; | |
209 | sigset_t *temp = NULL; | |
210 | CPUState *cpu = thread_cpu; | |
211 | TaskState *ts = (TaskState *)cpu->opaque; | |
212 | bool segv_was_blocked = ts->sigsegv_blocked; | |
213 | ||
214 | if (set) { | |
215 | bool has_sigsegv = sigismember(set, SIGSEGV); | |
216 | val = *set; | |
217 | temp = &val; | |
218 | ||
219 | sigdelset(temp, SIGSEGV); | |
220 | ||
221 | switch (how) { | |
222 | case SIG_BLOCK: | |
223 | if (has_sigsegv) { | |
224 | ts->sigsegv_blocked = true; | |
225 | } | |
226 | break; | |
227 | case SIG_UNBLOCK: | |
228 | if (has_sigsegv) { | |
229 | ts->sigsegv_blocked = false; | |
230 | } | |
231 | break; | |
232 | case SIG_SETMASK: | |
233 | ts->sigsegv_blocked = has_sigsegv; | |
234 | break; | |
235 | default: | |
236 | g_assert_not_reached(); | |
237 | } | |
238 | } | |
239 | ||
240 | ret = sigprocmask(how, temp, oldset); | |
241 | ||
242 | if (oldset && segv_was_blocked) { | |
243 | sigaddset(oldset, SIGSEGV); | |
244 | } | |
245 | ||
246 | return ret; | |
1c275925 AB |
247 | } |
248 | ||
9de5e440 FB |
249 | /* siginfo conversion */ |
250 | ||
c227f099 | 251 | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
9de5e440 | 252 | const siginfo_t *info) |
66fb9763 | 253 | { |
a05c6409 | 254 | int sig = host_to_target_signal(info->si_signo); |
9de5e440 FB |
255 | tinfo->si_signo = sig; |
256 | tinfo->si_errno = 0; | |
afd7cd92 | 257 | tinfo->si_code = info->si_code; |
a05c6409 RH |
258 | |
259 | if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV | |
260 | || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) { | |
261 | /* Should never come here, but who knows. The information for | |
262 | the target is irrelevant. */ | |
9de5e440 | 263 | tinfo->_sifields._sigfault._addr = 0; |
a05c6409 RH |
264 | } else if (sig == TARGET_SIGIO) { |
265 | tinfo->_sifields._sigpoll._band = info->si_band; | |
7f7f7c84 | 266 | tinfo->_sifields._sigpoll._fd = info->si_fd; |
a05c6409 RH |
267 | } else if (sig == TARGET_SIGCHLD) { |
268 | tinfo->_sifields._sigchld._pid = info->si_pid; | |
269 | tinfo->_sifields._sigchld._uid = info->si_uid; | |
270 | tinfo->_sifields._sigchld._status | |
271 | = host_to_target_waitstatus(info->si_status); | |
272 | tinfo->_sifields._sigchld._utime = info->si_utime; | |
273 | tinfo->_sifields._sigchld._stime = info->si_stime; | |
9de5e440 FB |
274 | } else if (sig >= TARGET_SIGRTMIN) { |
275 | tinfo->_sifields._rt._pid = info->si_pid; | |
276 | tinfo->_sifields._rt._uid = info->si_uid; | |
277 | /* XXX: potential problem if 64 bit */ | |
a05c6409 RH |
278 | tinfo->_sifields._rt._sigval.sival_ptr |
279 | = (abi_ulong)(unsigned long)info->si_value.sival_ptr; | |
9de5e440 FB |
280 | } |
281 | } | |
282 | ||
c227f099 AL |
283 | static void tswap_siginfo(target_siginfo_t *tinfo, |
284 | const target_siginfo_t *info) | |
9de5e440 | 285 | { |
a05c6409 | 286 | int sig = info->si_signo; |
9de5e440 | 287 | tinfo->si_signo = tswap32(sig); |
66fb9763 FB |
288 | tinfo->si_errno = tswap32(info->si_errno); |
289 | tinfo->si_code = tswap32(info->si_code); | |
a05c6409 RH |
290 | |
291 | if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV | |
292 | || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) { | |
293 | tinfo->_sifields._sigfault._addr | |
294 | = tswapal(info->_sifields._sigfault._addr); | |
295 | } else if (sig == TARGET_SIGIO) { | |
296 | tinfo->_sifields._sigpoll._band | |
297 | = tswap32(info->_sifields._sigpoll._band); | |
298 | tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd); | |
299 | } else if (sig == TARGET_SIGCHLD) { | |
300 | tinfo->_sifields._sigchld._pid | |
301 | = tswap32(info->_sifields._sigchld._pid); | |
302 | tinfo->_sifields._sigchld._uid | |
303 | = tswap32(info->_sifields._sigchld._uid); | |
304 | tinfo->_sifields._sigchld._status | |
305 | = tswap32(info->_sifields._sigchld._status); | |
306 | tinfo->_sifields._sigchld._utime | |
307 | = tswapal(info->_sifields._sigchld._utime); | |
308 | tinfo->_sifields._sigchld._stime | |
309 | = tswapal(info->_sifields._sigchld._stime); | |
9de5e440 FB |
310 | } else if (sig >= TARGET_SIGRTMIN) { |
311 | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); | |
312 | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); | |
a05c6409 RH |
313 | tinfo->_sifields._rt._sigval.sival_ptr |
314 | = tswapal(info->_sifields._rt._sigval.sival_ptr); | |
9de5e440 FB |
315 | } |
316 | } | |
317 | ||
318 | ||
c227f099 | 319 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) |
9de5e440 FB |
320 | { |
321 | host_to_target_siginfo_noswap(tinfo, info); | |
322 | tswap_siginfo(tinfo, tinfo); | |
66fb9763 FB |
323 | } |
324 | ||
9de5e440 | 325 | /* XXX: we support only POSIX RT signals are used. */ |
aa1f17c1 | 326 | /* XXX: find a solution for 64 bit (additional malloced data is needed) */ |
c227f099 | 327 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
66fb9763 FB |
328 | { |
329 | info->si_signo = tswap32(tinfo->si_signo); | |
330 | info->si_errno = tswap32(tinfo->si_errno); | |
331 | info->si_code = tswap32(tinfo->si_code); | |
9de5e440 FB |
332 | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
333 | info->si_uid = tswap32(tinfo->_sifields._rt._uid); | |
5fafdf24 | 334 | info->si_value.sival_ptr = |
cbb21eed | 335 | (void *)(long)tswapal(tinfo->_sifields._rt._sigval.sival_ptr); |
66fb9763 FB |
336 | } |
337 | ||
ca587a8e AJ |
338 | static int fatal_signal (int sig) |
339 | { | |
340 | switch (sig) { | |
341 | case TARGET_SIGCHLD: | |
342 | case TARGET_SIGURG: | |
343 | case TARGET_SIGWINCH: | |
344 | /* Ignored by default. */ | |
345 | return 0; | |
346 | case TARGET_SIGCONT: | |
347 | case TARGET_SIGSTOP: | |
348 | case TARGET_SIGTSTP: | |
349 | case TARGET_SIGTTIN: | |
350 | case TARGET_SIGTTOU: | |
351 | /* Job control signals. */ | |
352 | return 0; | |
353 | default: | |
354 | return 1; | |
355 | } | |
356 | } | |
357 | ||
edf8e2af MW |
358 | /* returns 1 if given signal should dump core if not handled */ |
359 | static int core_dump_signal(int sig) | |
360 | { | |
361 | switch (sig) { | |
362 | case TARGET_SIGABRT: | |
363 | case TARGET_SIGFPE: | |
364 | case TARGET_SIGILL: | |
365 | case TARGET_SIGQUIT: | |
366 | case TARGET_SIGSEGV: | |
367 | case TARGET_SIGTRAP: | |
368 | case TARGET_SIGBUS: | |
369 | return (1); | |
370 | default: | |
371 | return (0); | |
372 | } | |
373 | } | |
374 | ||
31e31b8a FB |
375 | void signal_init(void) |
376 | { | |
377 | struct sigaction act; | |
624f7979 | 378 | struct sigaction oact; |
9e5f5284 | 379 | int i, j; |
624f7979 | 380 | int host_sig; |
31e31b8a | 381 | |
9e5f5284 | 382 | /* generate signal conversion tables */ |
3ca05588 | 383 | for(i = 1; i < _NSIG; i++) { |
9e5f5284 FB |
384 | if (host_to_target_signal_table[i] == 0) |
385 | host_to_target_signal_table[i] = i; | |
386 | } | |
3ca05588 | 387 | for(i = 1; i < _NSIG; i++) { |
9e5f5284 FB |
388 | j = host_to_target_signal_table[i]; |
389 | target_to_host_signal_table[j] = i; | |
390 | } | |
3b46e624 | 391 | |
9de5e440 FB |
392 | /* set all host signal handlers. ALL signals are blocked during |
393 | the handlers to serialize them. */ | |
624f7979 PB |
394 | memset(sigact_table, 0, sizeof(sigact_table)); |
395 | ||
9de5e440 | 396 | sigfillset(&act.sa_mask); |
31e31b8a FB |
397 | act.sa_flags = SA_SIGINFO; |
398 | act.sa_sigaction = host_signal_handler; | |
624f7979 PB |
399 | for(i = 1; i <= TARGET_NSIG; i++) { |
400 | host_sig = target_to_host_signal(i); | |
401 | sigaction(host_sig, NULL, &oact); | |
402 | if (oact.sa_sigaction == (void *)SIG_IGN) { | |
403 | sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN; | |
404 | } else if (oact.sa_sigaction == (void *)SIG_DFL) { | |
405 | sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL; | |
406 | } | |
407 | /* If there's already a handler installed then something has | |
408 | gone horribly wrong, so don't even try to handle that case. */ | |
ca587a8e AJ |
409 | /* Install some handlers for our own use. We need at least |
410 | SIGSEGV and SIGBUS, to detect exceptions. We can not just | |
411 | trap all signals because it affects syscall interrupt | |
412 | behavior. But do trap all default-fatal signals. */ | |
413 | if (fatal_signal (i)) | |
624f7979 | 414 | sigaction(host_sig, &act, NULL); |
31e31b8a | 415 | } |
66fb9763 FB |
416 | } |
417 | ||
418 | /* signal queue handling */ | |
419 | ||
9349b4f9 | 420 | static inline struct sigqueue *alloc_sigqueue(CPUArchState *env) |
66fb9763 | 421 | { |
0429a971 AF |
422 | CPUState *cpu = ENV_GET_CPU(env); |
423 | TaskState *ts = cpu->opaque; | |
624f7979 | 424 | struct sigqueue *q = ts->first_free; |
66fb9763 FB |
425 | if (!q) |
426 | return NULL; | |
624f7979 | 427 | ts->first_free = q->next; |
66fb9763 | 428 | return q; |
31e31b8a FB |
429 | } |
430 | ||
9349b4f9 | 431 | static inline void free_sigqueue(CPUArchState *env, struct sigqueue *q) |
66fb9763 | 432 | { |
0429a971 AF |
433 | CPUState *cpu = ENV_GET_CPU(env); |
434 | TaskState *ts = cpu->opaque; | |
435 | ||
624f7979 PB |
436 | q->next = ts->first_free; |
437 | ts->first_free = q; | |
66fb9763 FB |
438 | } |
439 | ||
9de5e440 | 440 | /* abort execution with signal */ |
66393fb9 | 441 | static void QEMU_NORETURN force_sig(int target_sig) |
66fb9763 | 442 | { |
0429a971 AF |
443 | CPUState *cpu = thread_cpu; |
444 | CPUArchState *env = cpu->env_ptr; | |
445 | TaskState *ts = (TaskState *)cpu->opaque; | |
edf8e2af | 446 | int host_sig, core_dumped = 0; |
603e4fd7 | 447 | struct sigaction act; |
66393fb9 | 448 | host_sig = target_to_host_signal(target_sig); |
a2247f8e | 449 | gdb_signalled(env, target_sig); |
603e4fd7 | 450 | |
edf8e2af | 451 | /* dump core if supported by target binary format */ |
66393fb9 | 452 | if (core_dump_signal(target_sig) && (ts->bprm->core_dump != NULL)) { |
edf8e2af MW |
453 | stop_all_tasks(); |
454 | core_dumped = | |
a2247f8e | 455 | ((*ts->bprm->core_dump)(target_sig, env) == 0); |
edf8e2af MW |
456 | } |
457 | if (core_dumped) { | |
458 | /* we already dumped the core of target process, we don't want | |
459 | * a coredump of qemu itself */ | |
460 | struct rlimit nodump; | |
461 | getrlimit(RLIMIT_CORE, &nodump); | |
462 | nodump.rlim_cur=0; | |
463 | setrlimit(RLIMIT_CORE, &nodump); | |
464 | (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n", | |
66393fb9 | 465 | target_sig, strsignal(host_sig), "core dumped" ); |
edf8e2af MW |
466 | } |
467 | ||
0c58751c | 468 | /* The proper exit code for dying from an uncaught signal is |
603e4fd7 AJ |
469 | * -<signal>. The kernel doesn't allow exit() or _exit() to pass |
470 | * a negative value. To get the proper exit code we need to | |
471 | * actually die from an uncaught signal. Here the default signal | |
472 | * handler is installed, we send ourself a signal and we wait for | |
473 | * it to arrive. */ | |
474 | sigfillset(&act.sa_mask); | |
475 | act.sa_handler = SIG_DFL; | |
3a5d30bf | 476 | act.sa_flags = 0; |
603e4fd7 AJ |
477 | sigaction(host_sig, &act, NULL); |
478 | ||
479 | /* For some reason raise(host_sig) doesn't send the signal when | |
480 | * statically linked on x86-64. */ | |
481 | kill(getpid(), host_sig); | |
482 | ||
483 | /* Make sure the signal isn't masked (just reuse the mask inside | |
484 | of act) */ | |
485 | sigdelset(&act.sa_mask, host_sig); | |
486 | sigsuspend(&act.sa_mask); | |
487 | ||
488 | /* unreachable */ | |
a6c6f76c | 489 | abort(); |
66fb9763 FB |
490 | } |
491 | ||
9de5e440 FB |
492 | /* queue a signal so that it will be send to the virtual CPU as soon |
493 | as possible */ | |
9349b4f9 | 494 | int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info) |
31e31b8a | 495 | { |
0429a971 AF |
496 | CPUState *cpu = ENV_GET_CPU(env); |
497 | TaskState *ts = cpu->opaque; | |
624f7979 | 498 | struct emulated_sigtable *k; |
9de5e440 | 499 | struct sigqueue *q, **pq; |
992f48a0 | 500 | abi_ulong handler; |
ca587a8e | 501 | int queue; |
66fb9763 | 502 | |
9de5e440 | 503 | #if defined(DEBUG_SIGNAL) |
5fafdf24 | 504 | fprintf(stderr, "queue_signal: sig=%d\n", |
9de5e440 | 505 | sig); |
66fb9763 | 506 | #endif |
624f7979 | 507 | k = &ts->sigtab[sig - 1]; |
ca587a8e | 508 | queue = gdb_queuesig (); |
624f7979 | 509 | handler = sigact_table[sig - 1]._sa_handler; |
a7ec0f98 PM |
510 | |
511 | if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) { | |
512 | /* Guest has blocked SIGSEGV but we got one anyway. Assume this | |
513 | * is a forced SIGSEGV (ie one the kernel handles via force_sig_info | |
514 | * because it got a real MMU fault). A blocked SIGSEGV in that | |
515 | * situation is treated as if using the default handler. This is | |
516 | * not correct if some other process has randomly sent us a SIGSEGV | |
517 | * via kill(), but that is not easy to distinguish at this point, | |
518 | * so we assume it doesn't happen. | |
519 | */ | |
520 | handler = TARGET_SIG_DFL; | |
521 | } | |
522 | ||
ca587a8e | 523 | if (!queue && handler == TARGET_SIG_DFL) { |
60b19691 TS |
524 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { |
525 | kill(getpid(),SIGSTOP); | |
526 | return 0; | |
527 | } else | |
66fb9763 | 528 | /* default handler : ignore some signal. The other are fatal */ |
5fafdf24 TS |
529 | if (sig != TARGET_SIGCHLD && |
530 | sig != TARGET_SIGURG && | |
60b19691 TS |
531 | sig != TARGET_SIGWINCH && |
532 | sig != TARGET_SIGCONT) { | |
66fb9763 | 533 | force_sig(sig); |
9de5e440 FB |
534 | } else { |
535 | return 0; /* indicate ignored */ | |
66fb9763 | 536 | } |
ca587a8e | 537 | } else if (!queue && handler == TARGET_SIG_IGN) { |
66fb9763 | 538 | /* ignore signal */ |
9de5e440 | 539 | return 0; |
ca587a8e | 540 | } else if (!queue && handler == TARGET_SIG_ERR) { |
66fb9763 FB |
541 | force_sig(sig); |
542 | } else { | |
9de5e440 FB |
543 | pq = &k->first; |
544 | if (sig < TARGET_SIGRTMIN) { | |
545 | /* if non real time signal, we queue exactly one signal */ | |
546 | if (!k->pending) | |
547 | q = &k->info; | |
548 | else | |
549 | return 0; | |
550 | } else { | |
551 | if (!k->pending) { | |
552 | /* first signal */ | |
553 | q = &k->info; | |
554 | } else { | |
624f7979 | 555 | q = alloc_sigqueue(env); |
9de5e440 FB |
556 | if (!q) |
557 | return -EAGAIN; | |
558 | while (*pq != NULL) | |
559 | pq = &(*pq)->next; | |
560 | } | |
561 | } | |
562 | *pq = q; | |
563 | q->info = *info; | |
564 | q->next = NULL; | |
565 | k->pending = 1; | |
566 | /* signal that a new signal is pending */ | |
624f7979 | 567 | ts->signal_pending = 1; |
9de5e440 FB |
568 | return 1; /* indicates that the signal was queued */ |
569 | } | |
570 | } | |
571 | ||
5fafdf24 | 572 | static void host_signal_handler(int host_signum, siginfo_t *info, |
9de5e440 FB |
573 | void *puc) |
574 | { | |
a2247f8e | 575 | CPUArchState *env = thread_cpu->env_ptr; |
9de5e440 | 576 | int sig; |
c227f099 | 577 | target_siginfo_t tinfo; |
9de5e440 FB |
578 | |
579 | /* the CPU emulator uses some host signals to detect exceptions, | |
eaa449b9 | 580 | we forward to it some signals */ |
ca587a8e | 581 | if ((host_signum == SIGSEGV || host_signum == SIGBUS) |
eaa449b9 | 582 | && info->si_code > 0) { |
b346ff46 | 583 | if (cpu_signal_handler(host_signum, info, puc)) |
9de5e440 FB |
584 | return; |
585 | } | |
586 | ||
587 | /* get target signal number */ | |
588 | sig = host_to_target_signal(host_signum); | |
589 | if (sig < 1 || sig > TARGET_NSIG) | |
590 | return; | |
591 | #if defined(DEBUG_SIGNAL) | |
bc8a22cc | 592 | fprintf(stderr, "qemu: got signal %d\n", sig); |
9de5e440 FB |
593 | #endif |
594 | host_to_target_siginfo_noswap(&tinfo, info); | |
a2247f8e | 595 | if (queue_signal(env, sig, &tinfo) == 1) { |
9de5e440 | 596 | /* interrupt the virtual CPU as soon as possible */ |
a2247f8e | 597 | cpu_exit(thread_cpu); |
66fb9763 FB |
598 | } |
599 | } | |
600 | ||
0da46a6e | 601 | /* do_sigaltstack() returns target values and errnos. */ |
579a97f7 FB |
602 | /* compare linux/kernel/signal.c:do_sigaltstack() */ |
603 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) | |
a04e134a TS |
604 | { |
605 | int ret; | |
606 | struct target_sigaltstack oss; | |
607 | ||
608 | /* XXX: test errors */ | |
579a97f7 | 609 | if(uoss_addr) |
a04e134a TS |
610 | { |
611 | __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp); | |
612 | __put_user(target_sigaltstack_used.ss_size, &oss.ss_size); | |
613 | __put_user(sas_ss_flags(sp), &oss.ss_flags); | |
614 | } | |
615 | ||
579a97f7 | 616 | if(uss_addr) |
a04e134a | 617 | { |
579a97f7 FB |
618 | struct target_sigaltstack *uss; |
619 | struct target_sigaltstack ss; | |
a04e134a | 620 | |
0da46a6e | 621 | ret = -TARGET_EFAULT; |
9eeb8306 | 622 | if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1)) { |
a04e134a | 623 | goto out; |
9eeb8306 RV |
624 | } |
625 | __get_user(ss.ss_sp, &uss->ss_sp); | |
626 | __get_user(ss.ss_size, &uss->ss_size); | |
627 | __get_user(ss.ss_flags, &uss->ss_flags); | |
579a97f7 | 628 | unlock_user_struct(uss, uss_addr, 0); |
a04e134a | 629 | |
0da46a6e | 630 | ret = -TARGET_EPERM; |
a04e134a TS |
631 | if (on_sig_stack(sp)) |
632 | goto out; | |
633 | ||
0da46a6e | 634 | ret = -TARGET_EINVAL; |
a04e134a TS |
635 | if (ss.ss_flags != TARGET_SS_DISABLE |
636 | && ss.ss_flags != TARGET_SS_ONSTACK | |
637 | && ss.ss_flags != 0) | |
638 | goto out; | |
639 | ||
640 | if (ss.ss_flags == TARGET_SS_DISABLE) { | |
641 | ss.ss_size = 0; | |
642 | ss.ss_sp = 0; | |
643 | } else { | |
0da46a6e | 644 | ret = -TARGET_ENOMEM; |
a04e134a TS |
645 | if (ss.ss_size < MINSIGSTKSZ) |
646 | goto out; | |
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]; | |
773b93ee | 676 | #if defined(DEBUG_SIGNAL) |
0bf9e31a BS |
677 | fprintf(stderr, "sigaction sig=%d act=0x%p, oact=0x%p\n", |
678 | sig, act, oact); | |
66fb9763 FB |
679 | #endif |
680 | if (oact) { | |
d2565875 RH |
681 | __put_user(k->_sa_handler, &oact->_sa_handler); |
682 | __put_user(k->sa_flags, &oact->sa_flags); | |
388bb21a | 683 | #if !defined(TARGET_MIPS) |
d2565875 | 684 | __put_user(k->sa_restorer, &oact->sa_restorer); |
388bb21a | 685 | #endif |
d2565875 | 686 | /* Not swapped. */ |
624f7979 | 687 | oact->sa_mask = k->sa_mask; |
66fb9763 FB |
688 | } |
689 | if (act) { | |
624f7979 | 690 | /* FIXME: This is not threadsafe. */ |
d2565875 RH |
691 | __get_user(k->_sa_handler, &act->_sa_handler); |
692 | __get_user(k->sa_flags, &act->sa_flags); | |
388bb21a | 693 | #if !defined(TARGET_MIPS) |
d2565875 | 694 | __get_user(k->sa_restorer, &act->sa_restorer); |
388bb21a | 695 | #endif |
d2565875 | 696 | /* To be swapped in target_to_host_sigset. */ |
624f7979 | 697 | k->sa_mask = act->sa_mask; |
773b93ee FB |
698 | |
699 | /* we update the host linux signal state */ | |
700 | host_sig = target_to_host_signal(sig); | |
701 | if (host_sig != SIGSEGV && host_sig != SIGBUS) { | |
702 | sigfillset(&act1.sa_mask); | |
703 | act1.sa_flags = SA_SIGINFO; | |
624f7979 | 704 | if (k->sa_flags & TARGET_SA_RESTART) |
773b93ee FB |
705 | act1.sa_flags |= SA_RESTART; |
706 | /* NOTE: it is important to update the host kernel signal | |
707 | ignore state to avoid getting unexpected interrupted | |
708 | syscalls */ | |
624f7979 | 709 | if (k->_sa_handler == TARGET_SIG_IGN) { |
773b93ee | 710 | act1.sa_sigaction = (void *)SIG_IGN; |
624f7979 | 711 | } else if (k->_sa_handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
712 | if (fatal_signal (sig)) |
713 | act1.sa_sigaction = host_signal_handler; | |
714 | else | |
715 | act1.sa_sigaction = (void *)SIG_DFL; | |
773b93ee FB |
716 | } else { |
717 | act1.sa_sigaction = host_signal_handler; | |
718 | } | |
0da46a6e | 719 | ret = sigaction(host_sig, &act1, NULL); |
773b93ee | 720 | } |
66fb9763 | 721 | } |
0da46a6e | 722 | return ret; |
66fb9763 FB |
723 | } |
724 | ||
b0fd8d18 | 725 | static inline void copy_siginfo_to_user(target_siginfo_t *tinfo, |
c227f099 | 726 | const target_siginfo_t *info) |
43fff238 FB |
727 | { |
728 | tswap_siginfo(tinfo, info); | |
43fff238 FB |
729 | } |
730 | ||
c3b5bc8a TS |
731 | static inline int current_exec_domain_sig(int sig) |
732 | { | |
733 | return /* current->exec_domain && current->exec_domain->signal_invmap | |
734 | && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig; | |
735 | } | |
736 | ||
459a4017 | 737 | #if defined(TARGET_I386) && TARGET_ABI_BITS == 32 |
66fb9763 FB |
738 | |
739 | /* from the Linux kernel */ | |
740 | ||
741 | struct target_fpreg { | |
742 | uint16_t significand[4]; | |
743 | uint16_t exponent; | |
744 | }; | |
745 | ||
746 | struct target_fpxreg { | |
747 | uint16_t significand[4]; | |
748 | uint16_t exponent; | |
749 | uint16_t padding[3]; | |
750 | }; | |
751 | ||
752 | struct target_xmmreg { | |
992f48a0 | 753 | abi_ulong element[4]; |
66fb9763 FB |
754 | }; |
755 | ||
756 | struct target_fpstate { | |
757 | /* Regular FPU environment */ | |
992f48a0 BS |
758 | abi_ulong cw; |
759 | abi_ulong sw; | |
760 | abi_ulong tag; | |
761 | abi_ulong ipoff; | |
762 | abi_ulong cssel; | |
763 | abi_ulong dataoff; | |
764 | abi_ulong datasel; | |
66fb9763 FB |
765 | struct target_fpreg _st[8]; |
766 | uint16_t status; | |
767 | uint16_t magic; /* 0xffff = regular FPU data only */ | |
768 | ||
769 | /* FXSR FPU environment */ | |
992f48a0 BS |
770 | abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
771 | abi_ulong mxcsr; | |
772 | abi_ulong reserved; | |
66fb9763 FB |
773 | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
774 | struct target_xmmreg _xmm[8]; | |
992f48a0 | 775 | abi_ulong padding[56]; |
66fb9763 FB |
776 | }; |
777 | ||
778 | #define X86_FXSR_MAGIC 0x0000 | |
779 | ||
780 | struct target_sigcontext { | |
781 | uint16_t gs, __gsh; | |
782 | uint16_t fs, __fsh; | |
783 | uint16_t es, __esh; | |
784 | uint16_t ds, __dsh; | |
992f48a0 BS |
785 | abi_ulong edi; |
786 | abi_ulong esi; | |
787 | abi_ulong ebp; | |
788 | abi_ulong esp; | |
789 | abi_ulong ebx; | |
790 | abi_ulong edx; | |
791 | abi_ulong ecx; | |
792 | abi_ulong eax; | |
793 | abi_ulong trapno; | |
794 | abi_ulong err; | |
795 | abi_ulong eip; | |
66fb9763 | 796 | uint16_t cs, __csh; |
992f48a0 BS |
797 | abi_ulong eflags; |
798 | abi_ulong esp_at_signal; | |
66fb9763 | 799 | uint16_t ss, __ssh; |
992f48a0 BS |
800 | abi_ulong fpstate; /* pointer */ |
801 | abi_ulong oldmask; | |
802 | abi_ulong cr2; | |
66fb9763 FB |
803 | }; |
804 | ||
66fb9763 | 805 | struct target_ucontext { |
992f48a0 BS |
806 | abi_ulong tuc_flags; |
807 | abi_ulong tuc_link; | |
c227f099 | 808 | target_stack_t tuc_stack; |
b8076a74 | 809 | struct target_sigcontext tuc_mcontext; |
c227f099 | 810 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
66fb9763 FB |
811 | }; |
812 | ||
813 | struct sigframe | |
814 | { | |
992f48a0 | 815 | abi_ulong pretcode; |
66fb9763 FB |
816 | int sig; |
817 | struct target_sigcontext sc; | |
818 | struct target_fpstate fpstate; | |
992f48a0 | 819 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
66fb9763 FB |
820 | char retcode[8]; |
821 | }; | |
822 | ||
823 | struct rt_sigframe | |
824 | { | |
992f48a0 | 825 | abi_ulong pretcode; |
66fb9763 | 826 | int sig; |
992f48a0 BS |
827 | abi_ulong pinfo; |
828 | abi_ulong puc; | |
66fb9763 FB |
829 | struct target_siginfo info; |
830 | struct target_ucontext uc; | |
831 | struct target_fpstate fpstate; | |
832 | char retcode[8]; | |
833 | }; | |
834 | ||
835 | /* | |
836 | * Set up a signal frame. | |
837 | */ | |
838 | ||
66fb9763 | 839 | /* XXX: save x87 state */ |
41ecc72b RV |
840 | static void setup_sigcontext(struct target_sigcontext *sc, |
841 | struct target_fpstate *fpstate, CPUX86State *env, abi_ulong mask, | |
842 | abi_ulong fpstate_addr) | |
66fb9763 | 843 | { |
27103424 | 844 | CPUState *cs = CPU(x86_env_get_cpu(env)); |
27103424 | 845 | uint16_t magic; |
66fb9763 | 846 | |
579a97f7 | 847 | /* already locked in setup_frame() */ |
1d8b512b RV |
848 | __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
849 | __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); | |
850 | __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); | |
851 | __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); | |
852 | __put_user(env->regs[R_EDI], &sc->edi); | |
853 | __put_user(env->regs[R_ESI], &sc->esi); | |
854 | __put_user(env->regs[R_EBP], &sc->ebp); | |
855 | __put_user(env->regs[R_ESP], &sc->esp); | |
856 | __put_user(env->regs[R_EBX], &sc->ebx); | |
857 | __put_user(env->regs[R_EDX], &sc->edx); | |
858 | __put_user(env->regs[R_ECX], &sc->ecx); | |
859 | __put_user(env->regs[R_EAX], &sc->eax); | |
860 | __put_user(cs->exception_index, &sc->trapno); | |
861 | __put_user(env->error_code, &sc->err); | |
862 | __put_user(env->eip, &sc->eip); | |
863 | __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); | |
864 | __put_user(env->eflags, &sc->eflags); | |
865 | __put_user(env->regs[R_ESP], &sc->esp_at_signal); | |
866 | __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); | |
ed2dcdf6 | 867 | |
28be6234 | 868 | cpu_x86_fsave(env, fpstate_addr, 1); |
ed2dcdf6 | 869 | fpstate->status = fpstate->sw; |
775b58d8 | 870 | magic = 0xffff; |
1d8b512b RV |
871 | __put_user(magic, &fpstate->magic); |
872 | __put_user(fpstate_addr, &sc->fpstate); | |
ed2dcdf6 | 873 | |
66fb9763 | 874 | /* non-iBCS2 extensions.. */ |
1d8b512b RV |
875 | __put_user(mask, &sc->oldmask); |
876 | __put_user(env->cr[2], &sc->cr2); | |
31e31b8a FB |
877 | } |
878 | ||
66fb9763 FB |
879 | /* |
880 | * Determine which stack to use.. | |
881 | */ | |
31e31b8a | 882 | |
579a97f7 | 883 | static inline abi_ulong |
624f7979 | 884 | get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size) |
31e31b8a | 885 | { |
66fb9763 FB |
886 | unsigned long esp; |
887 | ||
888 | /* Default to using normal stack */ | |
889 | esp = env->regs[R_ESP]; | |
66fb9763 | 890 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 891 | if (ka->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
892 | if (sas_ss_flags(esp) == 0) |
893 | esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
894 | } | |
66fb9763 FB |
895 | |
896 | /* This is the legacy signal stack switching. */ | |
5fafdf24 | 897 | else |
a52c757c | 898 | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
624f7979 PB |
899 | !(ka->sa_flags & TARGET_SA_RESTORER) && |
900 | ka->sa_restorer) { | |
901 | esp = (unsigned long) ka->sa_restorer; | |
a52c757c | 902 | } |
579a97f7 | 903 | return (esp - frame_size) & -8ul; |
66fb9763 FB |
904 | } |
905 | ||
579a97f7 | 906 | /* compare linux/arch/i386/kernel/signal.c:setup_frame() */ |
624f7979 | 907 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 908 | target_sigset_t *set, CPUX86State *env) |
66fb9763 | 909 | { |
579a97f7 | 910 | abi_ulong frame_addr; |
66fb9763 | 911 | struct sigframe *frame; |
7df2fa36 | 912 | int i; |
66fb9763 | 913 | |
579a97f7 | 914 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 915 | |
579a97f7 | 916 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 917 | goto give_sigsegv; |
579a97f7 | 918 | |
1d8b512b RV |
919 | __put_user(current_exec_domain_sig(sig), |
920 | &frame->sig); | |
66fb9763 | 921 | |
28be6234 FB |
922 | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0], |
923 | frame_addr + offsetof(struct sigframe, fpstate)); | |
66fb9763 | 924 | |
7df2fa36 RV |
925 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
926 | __put_user(set->sig[i], &frame->extramask[i - 1]); | |
927 | } | |
66fb9763 FB |
928 | |
929 | /* Set up to return from userspace. If provided, use a stub | |
930 | already in userspace. */ | |
624f7979 | 931 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1d8b512b | 932 | __put_user(ka->sa_restorer, &frame->pretcode); |
66fb9763 | 933 | } else { |
775b58d8 | 934 | uint16_t val16; |
28be6234 FB |
935 | abi_ulong retcode_addr; |
936 | retcode_addr = frame_addr + offsetof(struct sigframe, retcode); | |
1d8b512b | 937 | __put_user(retcode_addr, &frame->pretcode); |
66fb9763 | 938 | /* This is popl %eax ; movl $,%eax ; int $0x80 */ |
775b58d8 | 939 | val16 = 0xb858; |
1d8b512b RV |
940 | __put_user(val16, (uint16_t *)(frame->retcode+0)); |
941 | __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); | |
775b58d8 | 942 | val16 = 0x80cd; |
1d8b512b | 943 | __put_user(val16, (uint16_t *)(frame->retcode+6)); |
66fb9763 FB |
944 | } |
945 | ||
66fb9763 FB |
946 | |
947 | /* Set up registers for signal handler */ | |
28be6234 | 948 | env->regs[R_ESP] = frame_addr; |
624f7979 | 949 | env->eip = ka->_sa_handler; |
66fb9763 FB |
950 | |
951 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
952 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
953 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
954 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
955 | env->eflags &= ~TF_MASK; | |
956 | ||
579a97f7 FB |
957 | unlock_user_struct(frame, frame_addr, 1); |
958 | ||
66fb9763 FB |
959 | return; |
960 | ||
961 | give_sigsegv: | |
962 | if (sig == TARGET_SIGSEGV) | |
624f7979 | 963 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
964 | force_sig(TARGET_SIGSEGV /* , current */); |
965 | } | |
966 | ||
579a97f7 | 967 | /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 968 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
969 | target_siginfo_t *info, |
970 | target_sigset_t *set, CPUX86State *env) | |
66fb9763 | 971 | { |
28be6234 | 972 | abi_ulong frame_addr, addr; |
66fb9763 | 973 | struct rt_sigframe *frame; |
0188fadb | 974 | int i; |
66fb9763 | 975 | |
579a97f7 | 976 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 977 | |
579a97f7 | 978 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 979 | goto give_sigsegv; |
66fb9763 | 980 | |
1d8b512b | 981 | __put_user(current_exec_domain_sig(sig), &frame->sig); |
28be6234 | 982 | addr = frame_addr + offsetof(struct rt_sigframe, info); |
1d8b512b | 983 | __put_user(addr, &frame->pinfo); |
28be6234 | 984 | addr = frame_addr + offsetof(struct rt_sigframe, uc); |
1d8b512b | 985 | __put_user(addr, &frame->puc); |
b0fd8d18 | 986 | copy_siginfo_to_user(&frame->info, info); |
31e31b8a | 987 | |
66fb9763 | 988 | /* Create the ucontext. */ |
1d8b512b RV |
989 | __put_user(0, &frame->uc.tuc_flags); |
990 | __put_user(0, &frame->uc.tuc_link); | |
991 | __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp); | |
992 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), | |
993 | &frame->uc.tuc_stack.ss_flags); | |
994 | __put_user(target_sigaltstack_used.ss_size, | |
995 | &frame->uc.tuc_stack.ss_size); | |
41ecc72b RV |
996 | setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, env, |
997 | set->sig[0], frame_addr + offsetof(struct rt_sigframe, fpstate)); | |
998 | ||
0188fadb RV |
999 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1000 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); | |
1001 | } | |
31e31b8a | 1002 | |
66fb9763 FB |
1003 | /* Set up to return from userspace. If provided, use a stub |
1004 | already in userspace. */ | |
624f7979 | 1005 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1d8b512b | 1006 | __put_user(ka->sa_restorer, &frame->pretcode); |
66fb9763 | 1007 | } else { |
775b58d8 | 1008 | uint16_t val16; |
28be6234 | 1009 | addr = frame_addr + offsetof(struct rt_sigframe, retcode); |
1d8b512b | 1010 | __put_user(addr, &frame->pretcode); |
66fb9763 | 1011 | /* This is movl $,%eax ; int $0x80 */ |
1d8b512b RV |
1012 | __put_user(0xb8, (char *)(frame->retcode+0)); |
1013 | __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); | |
775b58d8 | 1014 | val16 = 0x80cd; |
1d8b512b | 1015 | __put_user(val16, (uint16_t *)(frame->retcode+5)); |
66fb9763 FB |
1016 | } |
1017 | ||
66fb9763 | 1018 | /* Set up registers for signal handler */ |
28be6234 | 1019 | env->regs[R_ESP] = frame_addr; |
624f7979 | 1020 | env->eip = ka->_sa_handler; |
66fb9763 FB |
1021 | |
1022 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
1023 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
1024 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
1025 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
1026 | env->eflags &= ~TF_MASK; | |
1027 | ||
579a97f7 FB |
1028 | unlock_user_struct(frame, frame_addr, 1); |
1029 | ||
66fb9763 FB |
1030 | return; |
1031 | ||
1032 | give_sigsegv: | |
1033 | if (sig == TARGET_SIGSEGV) | |
624f7979 | 1034 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
1035 | force_sig(TARGET_SIGSEGV /* , current */); |
1036 | } | |
1037 | ||
1038 | static int | |
1039 | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) | |
1040 | { | |
1041 | unsigned int err = 0; | |
28be6234 FB |
1042 | abi_ulong fpstate_addr; |
1043 | unsigned int tmpflags; | |
1044 | ||
1045 | cpu_x86_load_seg(env, R_GS, tswap16(sc->gs)); | |
1046 | cpu_x86_load_seg(env, R_FS, tswap16(sc->fs)); | |
1047 | cpu_x86_load_seg(env, R_ES, tswap16(sc->es)); | |
1048 | cpu_x86_load_seg(env, R_DS, tswap16(sc->ds)); | |
1049 | ||
1050 | env->regs[R_EDI] = tswapl(sc->edi); | |
1051 | env->regs[R_ESI] = tswapl(sc->esi); | |
1052 | env->regs[R_EBP] = tswapl(sc->ebp); | |
1053 | env->regs[R_ESP] = tswapl(sc->esp); | |
1054 | env->regs[R_EBX] = tswapl(sc->ebx); | |
1055 | env->regs[R_EDX] = tswapl(sc->edx); | |
1056 | env->regs[R_ECX] = tswapl(sc->ecx); | |
1057 | env->eip = tswapl(sc->eip); | |
66fb9763 | 1058 | |
9a826d78 MM |
1059 | cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3); |
1060 | cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3); | |
5fafdf24 | 1061 | |
28be6234 FB |
1062 | tmpflags = tswapl(sc->eflags); |
1063 | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); | |
1064 | // regs->orig_eax = -1; /* disable syscall checks */ | |
66fb9763 | 1065 | |
28be6234 FB |
1066 | fpstate_addr = tswapl(sc->fpstate); |
1067 | if (fpstate_addr != 0) { | |
1068 | if (!access_ok(VERIFY_READ, fpstate_addr, | |
1069 | sizeof(struct target_fpstate))) | |
1070 | goto badframe; | |
1071 | cpu_x86_frstor(env, fpstate_addr, 1); | |
66fb9763 | 1072 | } |
ed2dcdf6 | 1073 | |
28be6234 | 1074 | *peax = tswapl(sc->eax); |
66fb9763 | 1075 | return err; |
66fb9763 FB |
1076 | badframe: |
1077 | return 1; | |
66fb9763 FB |
1078 | } |
1079 | ||
1080 | long do_sigreturn(CPUX86State *env) | |
1081 | { | |
579a97f7 FB |
1082 | struct sigframe *frame; |
1083 | abi_ulong frame_addr = env->regs[R_ESP] - 8; | |
c227f099 | 1084 | target_sigset_t target_set; |
66fb9763 FB |
1085 | sigset_t set; |
1086 | int eax, i; | |
1087 | ||
447db213 FB |
1088 | #if defined(DEBUG_SIGNAL) |
1089 | fprintf(stderr, "do_sigreturn\n"); | |
1090 | #endif | |
579a97f7 FB |
1091 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1092 | goto badframe; | |
66fb9763 | 1093 | /* set blocked signals */ |
f5f601af | 1094 | __get_user(target_set.sig[0], &frame->sc.oldmask); |
9231944d | 1095 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
f5f601af | 1096 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
9231944d | 1097 | } |
66fb9763 | 1098 | |
9231944d | 1099 | target_to_host_sigset_internal(&set, &target_set); |
1c275925 | 1100 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
3b46e624 | 1101 | |
66fb9763 FB |
1102 | /* restore registers */ |
1103 | if (restore_sigcontext(env, &frame->sc, &eax)) | |
1104 | goto badframe; | |
579a97f7 | 1105 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1106 | return eax; |
1107 | ||
1108 | badframe: | |
579a97f7 | 1109 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1110 | force_sig(TARGET_SIGSEGV); |
1111 | return 0; | |
1112 | } | |
1113 | ||
1114 | long do_rt_sigreturn(CPUX86State *env) | |
1115 | { | |
28be6234 FB |
1116 | abi_ulong frame_addr; |
1117 | struct rt_sigframe *frame; | |
66fb9763 | 1118 | sigset_t set; |
66fb9763 FB |
1119 | int eax; |
1120 | ||
28be6234 FB |
1121 | frame_addr = env->regs[R_ESP] - 4; |
1122 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1123 | goto badframe; | |
b8076a74 | 1124 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
1c275925 | 1125 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
5fafdf24 | 1126 | |
b8076a74 | 1127 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax)) |
66fb9763 FB |
1128 | goto badframe; |
1129 | ||
28be6234 FB |
1130 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, |
1131 | get_sp_from_cpustate(env)) == -EFAULT) | |
66fb9763 | 1132 | goto badframe; |
a04e134a | 1133 | |
28be6234 | 1134 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1135 | return eax; |
1136 | ||
1137 | badframe: | |
28be6234 FB |
1138 | unlock_user_struct(frame, frame_addr, 0); |
1139 | force_sig(TARGET_SIGSEGV); | |
66fb9763 FB |
1140 | return 0; |
1141 | } | |
1142 | ||
1744aea1 AS |
1143 | #elif defined(TARGET_AARCH64) |
1144 | ||
1145 | struct target_sigcontext { | |
1146 | uint64_t fault_address; | |
1147 | /* AArch64 registers */ | |
1148 | uint64_t regs[31]; | |
1149 | uint64_t sp; | |
1150 | uint64_t pc; | |
1151 | uint64_t pstate; | |
1152 | /* 4K reserved for FP/SIMD state and future expansion */ | |
1153 | char __reserved[4096] __attribute__((__aligned__(16))); | |
1154 | }; | |
1155 | ||
1156 | struct target_ucontext { | |
1157 | abi_ulong tuc_flags; | |
1158 | abi_ulong tuc_link; | |
1159 | target_stack_t tuc_stack; | |
1160 | target_sigset_t tuc_sigmask; | |
1161 | /* glibc uses a 1024-bit sigset_t */ | |
1162 | char __unused[1024 / 8 - sizeof(target_sigset_t)]; | |
1163 | /* last for future expansion */ | |
1164 | struct target_sigcontext tuc_mcontext; | |
1165 | }; | |
1166 | ||
1167 | /* | |
1168 | * Header to be used at the beginning of structures extending the user | |
1169 | * context. Such structures must be placed after the rt_sigframe on the stack | |
1170 | * and be 16-byte aligned. The last structure must be a dummy one with the | |
1171 | * magic and size set to 0. | |
1172 | */ | |
1173 | struct target_aarch64_ctx { | |
1174 | uint32_t magic; | |
1175 | uint32_t size; | |
1176 | }; | |
1177 | ||
1178 | #define TARGET_FPSIMD_MAGIC 0x46508001 | |
1179 | ||
1180 | struct target_fpsimd_context { | |
1181 | struct target_aarch64_ctx head; | |
1182 | uint32_t fpsr; | |
1183 | uint32_t fpcr; | |
1184 | uint64_t vregs[32 * 2]; /* really uint128_t vregs[32] */ | |
1185 | }; | |
1186 | ||
1187 | /* | |
1188 | * Auxiliary context saved in the sigcontext.__reserved array. Not exported to | |
1189 | * user space as it will change with the addition of new context. User space | |
1190 | * should check the magic/size information. | |
1191 | */ | |
1192 | struct target_aux_context { | |
1193 | struct target_fpsimd_context fpsimd; | |
1194 | /* additional context to be added before "end" */ | |
1195 | struct target_aarch64_ctx end; | |
1196 | }; | |
1197 | ||
1198 | struct target_rt_sigframe { | |
1199 | struct target_siginfo info; | |
1200 | struct target_ucontext uc; | |
1201 | uint64_t fp; | |
1202 | uint64_t lr; | |
1203 | uint32_t tramp[2]; | |
1204 | }; | |
1205 | ||
1206 | static int target_setup_sigframe(struct target_rt_sigframe *sf, | |
1207 | CPUARMState *env, target_sigset_t *set) | |
1208 | { | |
1209 | int i; | |
1210 | struct target_aux_context *aux = | |
1211 | (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved; | |
1212 | ||
1213 | /* set up the stack frame for unwinding */ | |
1214 | __put_user(env->xregs[29], &sf->fp); | |
1215 | __put_user(env->xregs[30], &sf->lr); | |
1216 | ||
1217 | for (i = 0; i < 31; i++) { | |
1218 | __put_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]); | |
1219 | } | |
1220 | __put_user(env->xregs[31], &sf->uc.tuc_mcontext.sp); | |
1221 | __put_user(env->pc, &sf->uc.tuc_mcontext.pc); | |
d356312f | 1222 | __put_user(pstate_read(env), &sf->uc.tuc_mcontext.pstate); |
1744aea1 | 1223 | |
7af03928 | 1224 | __put_user(env->exception.vaddress, &sf->uc.tuc_mcontext.fault_address); |
1744aea1 AS |
1225 | |
1226 | for (i = 0; i < TARGET_NSIG_WORDS; i++) { | |
1227 | __put_user(set->sig[i], &sf->uc.tuc_sigmask.sig[i]); | |
1228 | } | |
1229 | ||
1230 | for (i = 0; i < 32; i++) { | |
1231 | #ifdef TARGET_WORDS_BIGENDIAN | |
1232 | __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]); | |
1233 | __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]); | |
1234 | #else | |
1235 | __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]); | |
1236 | __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]); | |
1237 | #endif | |
1238 | } | |
e0ee138b WN |
1239 | __put_user(vfp_get_fpsr(env), &aux->fpsimd.fpsr); |
1240 | __put_user(vfp_get_fpcr(env), &aux->fpsimd.fpcr); | |
1744aea1 AS |
1241 | __put_user(TARGET_FPSIMD_MAGIC, &aux->fpsimd.head.magic); |
1242 | __put_user(sizeof(struct target_fpsimd_context), | |
1243 | &aux->fpsimd.head.size); | |
1244 | ||
1245 | /* set the "end" magic */ | |
1246 | __put_user(0, &aux->end.magic); | |
1247 | __put_user(0, &aux->end.size); | |
1248 | ||
1249 | return 0; | |
1250 | } | |
1251 | ||
1252 | static int target_restore_sigframe(CPUARMState *env, | |
1253 | struct target_rt_sigframe *sf) | |
1254 | { | |
1255 | sigset_t set; | |
1256 | int i; | |
1257 | struct target_aux_context *aux = | |
1258 | (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved; | |
e0ee138b | 1259 | uint32_t magic, size, fpsr, fpcr; |
d356312f | 1260 | uint64_t pstate; |
1744aea1 AS |
1261 | |
1262 | target_to_host_sigset(&set, &sf->uc.tuc_sigmask); | |
1c275925 | 1263 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
1744aea1 AS |
1264 | |
1265 | for (i = 0; i < 31; i++) { | |
1266 | __get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]); | |
1267 | } | |
1268 | ||
1269 | __get_user(env->xregs[31], &sf->uc.tuc_mcontext.sp); | |
1270 | __get_user(env->pc, &sf->uc.tuc_mcontext.pc); | |
d356312f PM |
1271 | __get_user(pstate, &sf->uc.tuc_mcontext.pstate); |
1272 | pstate_write(env, pstate); | |
1744aea1 AS |
1273 | |
1274 | __get_user(magic, &aux->fpsimd.head.magic); | |
1275 | __get_user(size, &aux->fpsimd.head.size); | |
1276 | ||
1277 | if (magic != TARGET_FPSIMD_MAGIC | |
1278 | || size != sizeof(struct target_fpsimd_context)) { | |
1279 | return 1; | |
1280 | } | |
1281 | ||
4cf23480 PM |
1282 | for (i = 0; i < 32; i++) { |
1283 | #ifdef TARGET_WORDS_BIGENDIAN | |
1284 | __get_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]); | |
1285 | __get_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]); | |
1286 | #else | |
1287 | __get_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]); | |
1288 | __get_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]); | |
1289 | #endif | |
1744aea1 | 1290 | } |
e0ee138b WN |
1291 | __get_user(fpsr, &aux->fpsimd.fpsr); |
1292 | vfp_set_fpsr(env, fpsr); | |
1293 | __get_user(fpcr, &aux->fpsimd.fpcr); | |
1294 | vfp_set_fpcr(env, fpcr); | |
1744aea1 AS |
1295 | |
1296 | return 0; | |
1297 | } | |
1298 | ||
1299 | static abi_ulong get_sigframe(struct target_sigaction *ka, CPUARMState *env) | |
1300 | { | |
1301 | abi_ulong sp; | |
1302 | ||
1303 | sp = env->xregs[31]; | |
1304 | ||
1305 | /* | |
1306 | * This is the X/Open sanctioned signal stack switching. | |
1307 | */ | |
1308 | if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) { | |
1309 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
1310 | } | |
1311 | ||
1312 | sp = (sp - sizeof(struct target_rt_sigframe)) & ~15; | |
1313 | ||
1314 | return sp; | |
1315 | } | |
1316 | ||
1317 | static void target_setup_frame(int usig, struct target_sigaction *ka, | |
1318 | target_siginfo_t *info, target_sigset_t *set, | |
1319 | CPUARMState *env) | |
1320 | { | |
1321 | struct target_rt_sigframe *frame; | |
8a3ae910 | 1322 | abi_ulong frame_addr, return_addr; |
1744aea1 AS |
1323 | |
1324 | frame_addr = get_sigframe(ka, env); | |
1325 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
1326 | goto give_sigsegv; | |
1327 | } | |
1328 | ||
1329 | __put_user(0, &frame->uc.tuc_flags); | |
1330 | __put_user(0, &frame->uc.tuc_link); | |
1331 | ||
1332 | __put_user(target_sigaltstack_used.ss_sp, | |
1333 | &frame->uc.tuc_stack.ss_sp); | |
1334 | __put_user(sas_ss_flags(env->xregs[31]), | |
1335 | &frame->uc.tuc_stack.ss_flags); | |
1336 | __put_user(target_sigaltstack_used.ss_size, | |
1337 | &frame->uc.tuc_stack.ss_size); | |
1338 | target_setup_sigframe(frame, env, set); | |
8a3ae910 MM |
1339 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1340 | return_addr = ka->sa_restorer; | |
1341 | } else { | |
1342 | /* mov x8,#__NR_rt_sigreturn; svc #0 */ | |
1343 | __put_user(0xd2801168, &frame->tramp[0]); | |
1344 | __put_user(0xd4000001, &frame->tramp[1]); | |
1345 | return_addr = frame_addr + offsetof(struct target_rt_sigframe, tramp); | |
1346 | } | |
1744aea1 AS |
1347 | env->xregs[0] = usig; |
1348 | env->xregs[31] = frame_addr; | |
1349 | env->xregs[29] = env->xregs[31] + offsetof(struct target_rt_sigframe, fp); | |
1350 | env->pc = ka->_sa_handler; | |
8a3ae910 | 1351 | env->xregs[30] = return_addr; |
1744aea1 | 1352 | if (info) { |
b0fd8d18 | 1353 | copy_siginfo_to_user(&frame->info, info); |
1744aea1 AS |
1354 | env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info); |
1355 | env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
1356 | } | |
1357 | ||
1358 | unlock_user_struct(frame, frame_addr, 1); | |
1359 | return; | |
1360 | ||
1361 | give_sigsegv: | |
1362 | unlock_user_struct(frame, frame_addr, 1); | |
1363 | force_sig(TARGET_SIGSEGV); | |
1364 | } | |
1365 | ||
1366 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
1367 | target_siginfo_t *info, target_sigset_t *set, | |
1368 | CPUARMState *env) | |
1369 | { | |
1370 | target_setup_frame(sig, ka, info, set, env); | |
1371 | } | |
1372 | ||
1373 | static void setup_frame(int sig, struct target_sigaction *ka, | |
1374 | target_sigset_t *set, CPUARMState *env) | |
1375 | { | |
1376 | target_setup_frame(sig, ka, 0, set, env); | |
1377 | } | |
1378 | ||
1379 | long do_rt_sigreturn(CPUARMState *env) | |
1380 | { | |
7f72cd23 | 1381 | struct target_rt_sigframe *frame = NULL; |
1744aea1 AS |
1382 | abi_ulong frame_addr = env->xregs[31]; |
1383 | ||
1384 | if (frame_addr & 15) { | |
1385 | goto badframe; | |
1386 | } | |
1387 | ||
1388 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
1389 | goto badframe; | |
1390 | } | |
1391 | ||
1392 | if (target_restore_sigframe(env, frame)) { | |
1393 | goto badframe; | |
1394 | } | |
1395 | ||
1396 | if (do_sigaltstack(frame_addr + | |
1397 | offsetof(struct target_rt_sigframe, uc.tuc_stack), | |
1398 | 0, get_sp_from_cpustate(env)) == -EFAULT) { | |
1399 | goto badframe; | |
1400 | } | |
1401 | ||
1402 | unlock_user_struct(frame, frame_addr, 0); | |
1403 | return env->xregs[0]; | |
1404 | ||
1405 | badframe: | |
1406 | unlock_user_struct(frame, frame_addr, 0); | |
1407 | force_sig(TARGET_SIGSEGV); | |
1408 | return 0; | |
1409 | } | |
1410 | ||
1411 | long do_sigreturn(CPUARMState *env) | |
1412 | { | |
1413 | return do_rt_sigreturn(env); | |
1414 | } | |
1415 | ||
43fff238 FB |
1416 | #elif defined(TARGET_ARM) |
1417 | ||
1418 | struct target_sigcontext { | |
992f48a0 BS |
1419 | abi_ulong trap_no; |
1420 | abi_ulong error_code; | |
1421 | abi_ulong oldmask; | |
1422 | abi_ulong arm_r0; | |
1423 | abi_ulong arm_r1; | |
1424 | abi_ulong arm_r2; | |
1425 | abi_ulong arm_r3; | |
1426 | abi_ulong arm_r4; | |
1427 | abi_ulong arm_r5; | |
1428 | abi_ulong arm_r6; | |
1429 | abi_ulong arm_r7; | |
1430 | abi_ulong arm_r8; | |
1431 | abi_ulong arm_r9; | |
1432 | abi_ulong arm_r10; | |
1433 | abi_ulong arm_fp; | |
1434 | abi_ulong arm_ip; | |
1435 | abi_ulong arm_sp; | |
1436 | abi_ulong arm_lr; | |
1437 | abi_ulong arm_pc; | |
1438 | abi_ulong arm_cpsr; | |
1439 | abi_ulong fault_address; | |
43fff238 FB |
1440 | }; |
1441 | ||
a745ec6d PB |
1442 | struct target_ucontext_v1 { |
1443 | abi_ulong tuc_flags; | |
1444 | abi_ulong tuc_link; | |
c227f099 | 1445 | target_stack_t tuc_stack; |
a745ec6d | 1446 | struct target_sigcontext tuc_mcontext; |
c227f099 | 1447 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
a745ec6d PB |
1448 | }; |
1449 | ||
1450 | struct target_ucontext_v2 { | |
992f48a0 BS |
1451 | abi_ulong tuc_flags; |
1452 | abi_ulong tuc_link; | |
c227f099 | 1453 | target_stack_t tuc_stack; |
b8076a74 | 1454 | struct target_sigcontext tuc_mcontext; |
c227f099 | 1455 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
5f0b7c88 | 1456 | char __unused[128 - sizeof(target_sigset_t)]; |
a745ec6d | 1457 | abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); |
43fff238 FB |
1458 | }; |
1459 | ||
0d871bdb PM |
1460 | struct target_user_vfp { |
1461 | uint64_t fpregs[32]; | |
1462 | abi_ulong fpscr; | |
1463 | }; | |
1464 | ||
1465 | struct target_user_vfp_exc { | |
1466 | abi_ulong fpexc; | |
1467 | abi_ulong fpinst; | |
1468 | abi_ulong fpinst2; | |
1469 | }; | |
1470 | ||
1471 | struct target_vfp_sigframe { | |
1472 | abi_ulong magic; | |
1473 | abi_ulong size; | |
1474 | struct target_user_vfp ufp; | |
1475 | struct target_user_vfp_exc ufp_exc; | |
1476 | } __attribute__((__aligned__(8))); | |
1477 | ||
08e11256 PM |
1478 | struct target_iwmmxt_sigframe { |
1479 | abi_ulong magic; | |
1480 | abi_ulong size; | |
1481 | uint64_t regs[16]; | |
1482 | /* Note that not all the coprocessor control registers are stored here */ | |
1483 | uint32_t wcssf; | |
1484 | uint32_t wcasf; | |
1485 | uint32_t wcgr0; | |
1486 | uint32_t wcgr1; | |
1487 | uint32_t wcgr2; | |
1488 | uint32_t wcgr3; | |
1489 | } __attribute__((__aligned__(8))); | |
1490 | ||
0d871bdb | 1491 | #define TARGET_VFP_MAGIC 0x56465001 |
08e11256 | 1492 | #define TARGET_IWMMXT_MAGIC 0x12ef842a |
0d871bdb | 1493 | |
a8c33204 | 1494 | struct sigframe_v1 |
43fff238 FB |
1495 | { |
1496 | struct target_sigcontext sc; | |
992f48a0 BS |
1497 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
1498 | abi_ulong retcode; | |
43fff238 FB |
1499 | }; |
1500 | ||
a8c33204 PB |
1501 | struct sigframe_v2 |
1502 | { | |
1503 | struct target_ucontext_v2 uc; | |
1504 | abi_ulong retcode; | |
1505 | }; | |
1506 | ||
a745ec6d | 1507 | struct rt_sigframe_v1 |
43fff238 | 1508 | { |
f8b0aa25 FB |
1509 | abi_ulong pinfo; |
1510 | abi_ulong puc; | |
43fff238 | 1511 | struct target_siginfo info; |
a745ec6d PB |
1512 | struct target_ucontext_v1 uc; |
1513 | abi_ulong retcode; | |
1514 | }; | |
1515 | ||
1516 | struct rt_sigframe_v2 | |
1517 | { | |
1518 | struct target_siginfo info; | |
1519 | struct target_ucontext_v2 uc; | |
992f48a0 | 1520 | abi_ulong retcode; |
43fff238 FB |
1521 | }; |
1522 | ||
1523 | #define TARGET_CONFIG_CPU_32 1 | |
1524 | ||
1525 | /* | |
1526 | * For ARM syscalls, we encode the syscall number into the instruction. | |
1527 | */ | |
1528 | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) | |
1529 | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) | |
1530 | ||
1531 | /* | |
1532 | * For Thumb syscalls, we pass the syscall number via r7. We therefore | |
1533 | * need two 16-bit instructions. | |
1534 | */ | |
1535 | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) | |
1536 | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) | |
1537 | ||
992f48a0 | 1538 | static const abi_ulong retcodes[4] = { |
43fff238 FB |
1539 | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
1540 | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN | |
1541 | }; | |
1542 | ||
1543 | ||
05390248 | 1544 | static inline int valid_user_regs(CPUARMState *regs) |
43fff238 FB |
1545 | { |
1546 | return 1; | |
1547 | } | |
1548 | ||
a8c33204 | 1549 | static void |
43fff238 | 1550 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
05390248 | 1551 | CPUARMState *env, abi_ulong mask) |
43fff238 | 1552 | { |
a8c33204 PB |
1553 | __put_user(env->regs[0], &sc->arm_r0); |
1554 | __put_user(env->regs[1], &sc->arm_r1); | |
1555 | __put_user(env->regs[2], &sc->arm_r2); | |
1556 | __put_user(env->regs[3], &sc->arm_r3); | |
1557 | __put_user(env->regs[4], &sc->arm_r4); | |
1558 | __put_user(env->regs[5], &sc->arm_r5); | |
1559 | __put_user(env->regs[6], &sc->arm_r6); | |
1560 | __put_user(env->regs[7], &sc->arm_r7); | |
1561 | __put_user(env->regs[8], &sc->arm_r8); | |
1562 | __put_user(env->regs[9], &sc->arm_r9); | |
1563 | __put_user(env->regs[10], &sc->arm_r10); | |
1564 | __put_user(env->regs[11], &sc->arm_fp); | |
1565 | __put_user(env->regs[12], &sc->arm_ip); | |
1566 | __put_user(env->regs[13], &sc->arm_sp); | |
1567 | __put_user(env->regs[14], &sc->arm_lr); | |
1568 | __put_user(env->regs[15], &sc->arm_pc); | |
43fff238 | 1569 | #ifdef TARGET_CONFIG_CPU_32 |
a8c33204 | 1570 | __put_user(cpsr_read(env), &sc->arm_cpsr); |
43fff238 FB |
1571 | #endif |
1572 | ||
a8c33204 PB |
1573 | __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); |
1574 | __put_user(/* current->thread.error_code */ 0, &sc->error_code); | |
1575 | __put_user(/* current->thread.address */ 0, &sc->fault_address); | |
1576 | __put_user(mask, &sc->oldmask); | |
43fff238 FB |
1577 | } |
1578 | ||
579a97f7 | 1579 | static inline abi_ulong |
05390248 | 1580 | get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize) |
43fff238 FB |
1581 | { |
1582 | unsigned long sp = regs->regs[13]; | |
1583 | ||
43fff238 FB |
1584 | /* |
1585 | * This is the X/Open sanctioned signal stack switching. | |
1586 | */ | |
624f7979 | 1587 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) |
a04e134a | 1588 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
43fff238 FB |
1589 | /* |
1590 | * ATPCS B01 mandates 8-byte alignment | |
1591 | */ | |
579a97f7 | 1592 | return (sp - framesize) & ~7; |
43fff238 FB |
1593 | } |
1594 | ||
0188fadb | 1595 | static void |
05390248 | 1596 | setup_return(CPUARMState *env, struct target_sigaction *ka, |
f8b0aa25 | 1597 | abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr) |
43fff238 | 1598 | { |
624f7979 | 1599 | abi_ulong handler = ka->_sa_handler; |
992f48a0 | 1600 | abi_ulong retcode; |
75b680e5 | 1601 | int thumb = handler & 1; |
964413d9 PM |
1602 | uint32_t cpsr = cpsr_read(env); |
1603 | ||
1604 | cpsr &= ~CPSR_IT; | |
1605 | if (thumb) { | |
1606 | cpsr |= CPSR_T; | |
1607 | } else { | |
1608 | cpsr &= ~CPSR_T; | |
1609 | } | |
43fff238 | 1610 | |
624f7979 PB |
1611 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1612 | retcode = ka->sa_restorer; | |
43fff238 FB |
1613 | } else { |
1614 | unsigned int idx = thumb; | |
1615 | ||
624f7979 | 1616 | if (ka->sa_flags & TARGET_SA_SIGINFO) |
43fff238 FB |
1617 | idx += 2; |
1618 | ||
0188fadb | 1619 | __put_user(retcodes[idx], rc); |
ca8a277c | 1620 | |
f8b0aa25 | 1621 | retcode = rc_addr + thumb; |
43fff238 FB |
1622 | } |
1623 | ||
1624 | env->regs[0] = usig; | |
f8b0aa25 | 1625 | env->regs[13] = frame_addr; |
43fff238 FB |
1626 | env->regs[14] = retcode; |
1627 | env->regs[15] = handler & (thumb ? ~1 : ~3); | |
964413d9 | 1628 | cpsr_write(env, cpsr, 0xffffffff); |
43fff238 FB |
1629 | } |
1630 | ||
05390248 | 1631 | static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env) |
0d871bdb PM |
1632 | { |
1633 | int i; | |
1634 | struct target_vfp_sigframe *vfpframe; | |
1635 | vfpframe = (struct target_vfp_sigframe *)regspace; | |
1636 | __put_user(TARGET_VFP_MAGIC, &vfpframe->magic); | |
1637 | __put_user(sizeof(*vfpframe), &vfpframe->size); | |
1638 | for (i = 0; i < 32; i++) { | |
005e1a0a | 1639 | __put_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]); |
0d871bdb PM |
1640 | } |
1641 | __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr); | |
1642 | __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc); | |
1643 | __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); | |
1644 | __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2); | |
1645 | return (abi_ulong*)(vfpframe+1); | |
1646 | } | |
1647 | ||
05390248 AF |
1648 | static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace, |
1649 | CPUARMState *env) | |
08e11256 PM |
1650 | { |
1651 | int i; | |
1652 | struct target_iwmmxt_sigframe *iwmmxtframe; | |
1653 | iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace; | |
1654 | __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic); | |
1655 | __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size); | |
1656 | for (i = 0; i < 16; i++) { | |
1657 | __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); | |
1658 | } | |
1659 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); | |
1660 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); | |
1661 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); | |
1662 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); | |
1663 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); | |
1664 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); | |
1665 | return (abi_ulong*)(iwmmxtframe+1); | |
1666 | } | |
1667 | ||
a8c33204 | 1668 | static void setup_sigframe_v2(struct target_ucontext_v2 *uc, |
05390248 | 1669 | target_sigset_t *set, CPUARMState *env) |
a8c33204 PB |
1670 | { |
1671 | struct target_sigaltstack stack; | |
1672 | int i; | |
0d871bdb | 1673 | abi_ulong *regspace; |
a8c33204 PB |
1674 | |
1675 | /* Clear all the bits of the ucontext we don't use. */ | |
1676 | memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); | |
1677 | ||
1678 | memset(&stack, 0, sizeof(stack)); | |
1679 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1680 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1681 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
1682 | memcpy(&uc->tuc_stack, &stack, sizeof(stack)); | |
1683 | ||
1684 | setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]); | |
0d871bdb PM |
1685 | /* Save coprocessor signal frame. */ |
1686 | regspace = uc->tuc_regspace; | |
1687 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
1688 | regspace = setup_sigframe_v2_vfp(regspace, env); | |
1689 | } | |
08e11256 PM |
1690 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
1691 | regspace = setup_sigframe_v2_iwmmxt(regspace, env); | |
1692 | } | |
1693 | ||
0d871bdb PM |
1694 | /* Write terminating magic word */ |
1695 | __put_user(0, regspace); | |
1696 | ||
a8c33204 PB |
1697 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1698 | __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); | |
1699 | } | |
1700 | } | |
1701 | ||
579a97f7 | 1702 | /* compare linux/arch/arm/kernel/signal.c:setup_frame() */ |
624f7979 | 1703 | static void setup_frame_v1(int usig, struct target_sigaction *ka, |
05390248 | 1704 | target_sigset_t *set, CPUARMState *regs) |
43fff238 | 1705 | { |
a8c33204 | 1706 | struct sigframe_v1 *frame; |
579a97f7 | 1707 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
a8c33204 | 1708 | int i; |
43fff238 | 1709 | |
579a97f7 FB |
1710 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1711 | return; | |
1712 | ||
a8c33204 | 1713 | setup_sigcontext(&frame->sc, regs, set->sig[0]); |
43fff238 | 1714 | |
0188fadb RV |
1715 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1716 | __put_user(set->sig[i], &frame->extramask[i - 1]); | |
1717 | } | |
43fff238 | 1718 | |
a8c33204 PB |
1719 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, |
1720 | frame_addr + offsetof(struct sigframe_v1, retcode)); | |
579a97f7 | 1721 | |
579a97f7 | 1722 | unlock_user_struct(frame, frame_addr, 1); |
a8c33204 PB |
1723 | } |
1724 | ||
624f7979 | 1725 | static void setup_frame_v2(int usig, struct target_sigaction *ka, |
05390248 | 1726 | target_sigset_t *set, CPUARMState *regs) |
a8c33204 PB |
1727 | { |
1728 | struct sigframe_v2 *frame; | |
1729 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); | |
1730 | ||
1731 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1732 | return; | |
1733 | ||
1734 | setup_sigframe_v2(&frame->uc, set, regs); | |
1735 | ||
1736 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, | |
1737 | frame_addr + offsetof(struct sigframe_v2, retcode)); | |
1738 | ||
1739 | unlock_user_struct(frame, frame_addr, 1); | |
1740 | } | |
1741 | ||
624f7979 | 1742 | static void setup_frame(int usig, struct target_sigaction *ka, |
05390248 | 1743 | target_sigset_t *set, CPUARMState *regs) |
a8c33204 PB |
1744 | { |
1745 | if (get_osversion() >= 0x020612) { | |
1746 | setup_frame_v2(usig, ka, set, regs); | |
1747 | } else { | |
1748 | setup_frame_v1(usig, ka, set, regs); | |
1749 | } | |
43fff238 FB |
1750 | } |
1751 | ||
579a97f7 | 1752 | /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 1753 | static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, |
c227f099 | 1754 | target_siginfo_t *info, |
05390248 | 1755 | target_sigset_t *set, CPUARMState *env) |
43fff238 | 1756 | { |
a745ec6d | 1757 | struct rt_sigframe_v1 *frame; |
579a97f7 | 1758 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
a04e134a | 1759 | struct target_sigaltstack stack; |
a8c33204 | 1760 | int i; |
f8b0aa25 | 1761 | abi_ulong info_addr, uc_addr; |
43fff238 | 1762 | |
579a97f7 | 1763 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
edf779ff FB |
1764 | return /* 1 */; |
1765 | ||
a745ec6d | 1766 | info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info); |
a8c33204 | 1767 | __put_user(info_addr, &frame->pinfo); |
a745ec6d | 1768 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc); |
a8c33204 PB |
1769 | __put_user(uc_addr, &frame->puc); |
1770 | copy_siginfo_to_user(&frame->info, info); | |
43fff238 FB |
1771 | |
1772 | /* Clear all the bits of the ucontext we don't use. */ | |
a745ec6d | 1773 | memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext)); |
43fff238 | 1774 | |
a04e134a TS |
1775 | memset(&stack, 0, sizeof(stack)); |
1776 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1777 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1778 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
775b58d8 | 1779 | memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack)); |
a04e134a | 1780 | |
a8c33204 | 1781 | setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]); |
9231944d | 1782 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
0188fadb | 1783 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
9231944d | 1784 | } |
43fff238 | 1785 | |
a8c33204 PB |
1786 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1787 | frame_addr + offsetof(struct rt_sigframe_v1, retcode)); | |
a745ec6d | 1788 | |
a8c33204 PB |
1789 | env->regs[1] = info_addr; |
1790 | env->regs[2] = uc_addr; | |
a745ec6d | 1791 | |
a745ec6d | 1792 | unlock_user_struct(frame, frame_addr, 1); |
a745ec6d PB |
1793 | } |
1794 | ||
624f7979 | 1795 | static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, |
c227f099 | 1796 | target_siginfo_t *info, |
05390248 | 1797 | target_sigset_t *set, CPUARMState *env) |
a745ec6d PB |
1798 | { |
1799 | struct rt_sigframe_v2 *frame; | |
1800 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
a745ec6d PB |
1801 | abi_ulong info_addr, uc_addr; |
1802 | ||
1803 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1804 | return /* 1 */; | |
1805 | ||
1806 | info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info); | |
1807 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc); | |
a8c33204 | 1808 | copy_siginfo_to_user(&frame->info, info); |
a745ec6d | 1809 | |
a8c33204 | 1810 | setup_sigframe_v2(&frame->uc, set, env); |
a745ec6d | 1811 | |
a8c33204 PB |
1812 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1813 | frame_addr + offsetof(struct rt_sigframe_v2, retcode)); | |
a745ec6d | 1814 | |
a8c33204 PB |
1815 | env->regs[1] = info_addr; |
1816 | env->regs[2] = uc_addr; | |
43fff238 | 1817 | |
579a97f7 | 1818 | unlock_user_struct(frame, frame_addr, 1); |
43fff238 FB |
1819 | } |
1820 | ||
624f7979 | 1821 | static void setup_rt_frame(int usig, struct target_sigaction *ka, |
c227f099 | 1822 | target_siginfo_t *info, |
05390248 | 1823 | target_sigset_t *set, CPUARMState *env) |
a745ec6d PB |
1824 | { |
1825 | if (get_osversion() >= 0x020612) { | |
1826 | setup_rt_frame_v2(usig, ka, info, set, env); | |
1827 | } else { | |
1828 | setup_rt_frame_v1(usig, ka, info, set, env); | |
1829 | } | |
1830 | } | |
1831 | ||
43fff238 | 1832 | static int |
05390248 | 1833 | restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc) |
43fff238 FB |
1834 | { |
1835 | int err = 0; | |
b5ff1b31 | 1836 | uint32_t cpsr; |
43fff238 | 1837 | |
1d8b512b RV |
1838 | __get_user(env->regs[0], &sc->arm_r0); |
1839 | __get_user(env->regs[1], &sc->arm_r1); | |
1840 | __get_user(env->regs[2], &sc->arm_r2); | |
1841 | __get_user(env->regs[3], &sc->arm_r3); | |
1842 | __get_user(env->regs[4], &sc->arm_r4); | |
1843 | __get_user(env->regs[5], &sc->arm_r5); | |
1844 | __get_user(env->regs[6], &sc->arm_r6); | |
1845 | __get_user(env->regs[7], &sc->arm_r7); | |
1846 | __get_user(env->regs[8], &sc->arm_r8); | |
1847 | __get_user(env->regs[9], &sc->arm_r9); | |
1848 | __get_user(env->regs[10], &sc->arm_r10); | |
1849 | __get_user(env->regs[11], &sc->arm_fp); | |
1850 | __get_user(env->regs[12], &sc->arm_ip); | |
1851 | __get_user(env->regs[13], &sc->arm_sp); | |
1852 | __get_user(env->regs[14], &sc->arm_lr); | |
1853 | __get_user(env->regs[15], &sc->arm_pc); | |
43fff238 | 1854 | #ifdef TARGET_CONFIG_CPU_32 |
1d8b512b | 1855 | __get_user(cpsr, &sc->arm_cpsr); |
75b680e5 | 1856 | cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC); |
43fff238 FB |
1857 | #endif |
1858 | ||
1859 | err |= !valid_user_regs(env); | |
1860 | ||
1861 | return err; | |
1862 | } | |
1863 | ||
05390248 | 1864 | static long do_sigreturn_v1(CPUARMState *env) |
43fff238 | 1865 | { |
f8b0aa25 | 1866 | abi_ulong frame_addr; |
978fae9f | 1867 | struct sigframe_v1 *frame = NULL; |
c227f099 | 1868 | target_sigset_t set; |
43fff238 | 1869 | sigset_t host_set; |
9231944d | 1870 | int i; |
43fff238 FB |
1871 | |
1872 | /* | |
1873 | * Since we stacked the signal on a 64-bit boundary, | |
1874 | * then 'sp' should be word aligned here. If it's | |
1875 | * not, then the user is trying to mess with us. | |
1876 | */ | |
f8b0aa25 | 1877 | frame_addr = env->regs[13]; |
978fae9f PM |
1878 | if (frame_addr & 7) { |
1879 | goto badframe; | |
1880 | } | |
1881 | ||
f8b0aa25 FB |
1882 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1883 | goto badframe; | |
43fff238 | 1884 | |
f5f601af RV |
1885 | __get_user(set.sig[0], &frame->sc.oldmask); |
1886 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
1887 | __get_user(set.sig[i], &frame->extramask[i - 1]); | |
1888 | } | |
43fff238 | 1889 | |
9231944d | 1890 | target_to_host_sigset_internal(&host_set, &set); |
1c275925 | 1891 | do_sigprocmask(SIG_SETMASK, &host_set, NULL); |
43fff238 FB |
1892 | |
1893 | if (restore_sigcontext(env, &frame->sc)) | |
1894 | goto badframe; | |
1895 | ||
1896 | #if 0 | |
1897 | /* Send SIGTRAP if we're single-stepping */ | |
1898 | if (ptrace_cancel_bpt(current)) | |
1899 | send_sig(SIGTRAP, current, 1); | |
1900 | #endif | |
f8b0aa25 FB |
1901 | unlock_user_struct(frame, frame_addr, 0); |
1902 | return env->regs[0]; | |
43fff238 FB |
1903 | |
1904 | badframe: | |
66393fb9 | 1905 | force_sig(TARGET_SIGSEGV /* , current */); |
43fff238 FB |
1906 | return 0; |
1907 | } | |
1908 | ||
05390248 | 1909 | static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *regspace) |
5f9099d9 PM |
1910 | { |
1911 | int i; | |
1912 | abi_ulong magic, sz; | |
1913 | uint32_t fpscr, fpexc; | |
1914 | struct target_vfp_sigframe *vfpframe; | |
1915 | vfpframe = (struct target_vfp_sigframe *)regspace; | |
1916 | ||
1917 | __get_user(magic, &vfpframe->magic); | |
1918 | __get_user(sz, &vfpframe->size); | |
1919 | if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) { | |
1920 | return 0; | |
1921 | } | |
1922 | for (i = 0; i < 32; i++) { | |
005e1a0a | 1923 | __get_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]); |
5f9099d9 PM |
1924 | } |
1925 | __get_user(fpscr, &vfpframe->ufp.fpscr); | |
1926 | vfp_set_fpscr(env, fpscr); | |
1927 | __get_user(fpexc, &vfpframe->ufp_exc.fpexc); | |
1928 | /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid | |
1929 | * and the exception flag is cleared | |
1930 | */ | |
1931 | fpexc |= (1 << 30); | |
1932 | fpexc &= ~((1 << 31) | (1 << 28)); | |
1933 | env->vfp.xregs[ARM_VFP_FPEXC] = fpexc; | |
1934 | __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); | |
1935 | __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2); | |
1936 | return (abi_ulong*)(vfpframe + 1); | |
1937 | } | |
1938 | ||
05390248 AF |
1939 | static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env, |
1940 | abi_ulong *regspace) | |
a59d69da PM |
1941 | { |
1942 | int i; | |
1943 | abi_ulong magic, sz; | |
1944 | struct target_iwmmxt_sigframe *iwmmxtframe; | |
1945 | iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace; | |
1946 | ||
1947 | __get_user(magic, &iwmmxtframe->magic); | |
1948 | __get_user(sz, &iwmmxtframe->size); | |
1949 | if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) { | |
1950 | return 0; | |
1951 | } | |
1952 | for (i = 0; i < 16; i++) { | |
1953 | __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); | |
1954 | } | |
1955 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); | |
1956 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); | |
1957 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); | |
1958 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); | |
1959 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); | |
1960 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); | |
1961 | return (abi_ulong*)(iwmmxtframe + 1); | |
1962 | } | |
1963 | ||
05390248 | 1964 | static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr, |
a8c33204 PB |
1965 | struct target_ucontext_v2 *uc) |
1966 | { | |
1967 | sigset_t host_set; | |
5f9099d9 | 1968 | abi_ulong *regspace; |
a8c33204 PB |
1969 | |
1970 | target_to_host_sigset(&host_set, &uc->tuc_sigmask); | |
1c275925 | 1971 | do_sigprocmask(SIG_SETMASK, &host_set, NULL); |
a8c33204 PB |
1972 | |
1973 | if (restore_sigcontext(env, &uc->tuc_mcontext)) | |
1974 | return 1; | |
1975 | ||
5f9099d9 PM |
1976 | /* Restore coprocessor signal frame */ |
1977 | regspace = uc->tuc_regspace; | |
1978 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
1979 | regspace = restore_sigframe_v2_vfp(env, regspace); | |
1980 | if (!regspace) { | |
1981 | return 1; | |
1982 | } | |
1983 | } | |
a59d69da PM |
1984 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
1985 | regspace = restore_sigframe_v2_iwmmxt(env, regspace); | |
1986 | if (!regspace) { | |
1987 | return 1; | |
1988 | } | |
1989 | } | |
5f9099d9 | 1990 | |
a8c33204 PB |
1991 | if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) |
1992 | return 1; | |
1993 | ||
1994 | #if 0 | |
1995 | /* Send SIGTRAP if we're single-stepping */ | |
1996 | if (ptrace_cancel_bpt(current)) | |
1997 | send_sig(SIGTRAP, current, 1); | |
1998 | #endif | |
1999 | ||
2000 | return 0; | |
2001 | } | |
2002 | ||
05390248 | 2003 | static long do_sigreturn_v2(CPUARMState *env) |
a8c33204 PB |
2004 | { |
2005 | abi_ulong frame_addr; | |
978fae9f | 2006 | struct sigframe_v2 *frame = NULL; |
a8c33204 PB |
2007 | |
2008 | /* | |
2009 | * Since we stacked the signal on a 64-bit boundary, | |
2010 | * then 'sp' should be word aligned here. If it's | |
2011 | * not, then the user is trying to mess with us. | |
2012 | */ | |
a8c33204 | 2013 | frame_addr = env->regs[13]; |
978fae9f PM |
2014 | if (frame_addr & 7) { |
2015 | goto badframe; | |
2016 | } | |
2017 | ||
a8c33204 PB |
2018 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2019 | goto badframe; | |
2020 | ||
2021 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) | |
2022 | goto badframe; | |
2023 | ||
2024 | unlock_user_struct(frame, frame_addr, 0); | |
2025 | return env->regs[0]; | |
2026 | ||
2027 | badframe: | |
2028 | unlock_user_struct(frame, frame_addr, 0); | |
66393fb9 | 2029 | force_sig(TARGET_SIGSEGV /* , current */); |
a8c33204 PB |
2030 | return 0; |
2031 | } | |
2032 | ||
05390248 | 2033 | long do_sigreturn(CPUARMState *env) |
a8c33204 PB |
2034 | { |
2035 | if (get_osversion() >= 0x020612) { | |
2036 | return do_sigreturn_v2(env); | |
2037 | } else { | |
2038 | return do_sigreturn_v1(env); | |
2039 | } | |
2040 | } | |
2041 | ||
05390248 | 2042 | static long do_rt_sigreturn_v1(CPUARMState *env) |
43fff238 | 2043 | { |
f8b0aa25 | 2044 | abi_ulong frame_addr; |
978fae9f | 2045 | struct rt_sigframe_v1 *frame = NULL; |
a745ec6d PB |
2046 | sigset_t host_set; |
2047 | ||
2048 | /* | |
2049 | * Since we stacked the signal on a 64-bit boundary, | |
2050 | * then 'sp' should be word aligned here. If it's | |
2051 | * not, then the user is trying to mess with us. | |
2052 | */ | |
a745ec6d | 2053 | frame_addr = env->regs[13]; |
978fae9f PM |
2054 | if (frame_addr & 7) { |
2055 | goto badframe; | |
2056 | } | |
2057 | ||
a745ec6d PB |
2058 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2059 | goto badframe; | |
2060 | ||
2061 | target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); | |
1c275925 | 2062 | do_sigprocmask(SIG_SETMASK, &host_set, NULL); |
a745ec6d PB |
2063 | |
2064 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) | |
2065 | goto badframe; | |
2066 | ||
2067 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) | |
2068 | goto badframe; | |
2069 | ||
2070 | #if 0 | |
2071 | /* Send SIGTRAP if we're single-stepping */ | |
2072 | if (ptrace_cancel_bpt(current)) | |
2073 | send_sig(SIGTRAP, current, 1); | |
2074 | #endif | |
2075 | unlock_user_struct(frame, frame_addr, 0); | |
2076 | return env->regs[0]; | |
2077 | ||
2078 | badframe: | |
2079 | unlock_user_struct(frame, frame_addr, 0); | |
66393fb9 | 2080 | force_sig(TARGET_SIGSEGV /* , current */); |
a745ec6d PB |
2081 | return 0; |
2082 | } | |
2083 | ||
05390248 | 2084 | static long do_rt_sigreturn_v2(CPUARMState *env) |
a745ec6d PB |
2085 | { |
2086 | abi_ulong frame_addr; | |
978fae9f | 2087 | struct rt_sigframe_v2 *frame = NULL; |
43fff238 FB |
2088 | |
2089 | /* | |
2090 | * Since we stacked the signal on a 64-bit boundary, | |
2091 | * then 'sp' should be word aligned here. If it's | |
2092 | * not, then the user is trying to mess with us. | |
2093 | */ | |
f8b0aa25 | 2094 | frame_addr = env->regs[13]; |
978fae9f PM |
2095 | if (frame_addr & 7) { |
2096 | goto badframe; | |
2097 | } | |
2098 | ||
f8b0aa25 FB |
2099 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2100 | goto badframe; | |
43fff238 | 2101 | |
a8c33204 PB |
2102 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) |
2103 | goto badframe; | |
a04e134a | 2104 | |
f8b0aa25 | 2105 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
2106 | return env->regs[0]; |
2107 | ||
2108 | badframe: | |
f8b0aa25 | 2109 | unlock_user_struct(frame, frame_addr, 0); |
66393fb9 | 2110 | force_sig(TARGET_SIGSEGV /* , current */); |
43fff238 FB |
2111 | return 0; |
2112 | } | |
2113 | ||
05390248 | 2114 | long do_rt_sigreturn(CPUARMState *env) |
a745ec6d PB |
2115 | { |
2116 | if (get_osversion() >= 0x020612) { | |
2117 | return do_rt_sigreturn_v2(env); | |
2118 | } else { | |
2119 | return do_rt_sigreturn_v1(env); | |
2120 | } | |
2121 | } | |
2122 | ||
6d5e216d | 2123 | #elif defined(TARGET_SPARC) |
80a9d035 | 2124 | |
6d5e216d FB |
2125 | #define __SUNOS_MAXWIN 31 |
2126 | ||
2127 | /* This is what SunOS does, so shall I. */ | |
2128 | struct target_sigcontext { | |
992f48a0 | 2129 | abi_ulong sigc_onstack; /* state to restore */ |
6d5e216d | 2130 | |
992f48a0 BS |
2131 | abi_ulong sigc_mask; /* sigmask to restore */ |
2132 | abi_ulong sigc_sp; /* stack pointer */ | |
2133 | abi_ulong sigc_pc; /* program counter */ | |
2134 | abi_ulong sigc_npc; /* next program counter */ | |
2135 | abi_ulong sigc_psr; /* for condition codes etc */ | |
2136 | abi_ulong sigc_g1; /* User uses these two registers */ | |
2137 | abi_ulong sigc_o0; /* within the trampoline code. */ | |
6d5e216d FB |
2138 | |
2139 | /* Now comes information regarding the users window set | |
2140 | * at the time of the signal. | |
2141 | */ | |
992f48a0 | 2142 | abi_ulong sigc_oswins; /* outstanding windows */ |
6d5e216d FB |
2143 | |
2144 | /* stack ptrs for each regwin buf */ | |
2145 | char *sigc_spbuf[__SUNOS_MAXWIN]; | |
2146 | ||
2147 | /* Windows to restore after signal */ | |
2148 | struct { | |
992f48a0 BS |
2149 | abi_ulong locals[8]; |
2150 | abi_ulong ins[8]; | |
6d5e216d FB |
2151 | } sigc_wbuf[__SUNOS_MAXWIN]; |
2152 | }; | |
2153 | /* A Sparc stack frame */ | |
2154 | struct sparc_stackf { | |
992f48a0 | 2155 | abi_ulong locals[8]; |
e321c34a PM |
2156 | abi_ulong ins[8]; |
2157 | /* It's simpler to treat fp and callers_pc as elements of ins[] | |
2158 | * since we never need to access them ourselves. | |
2159 | */ | |
6d5e216d | 2160 | char *structptr; |
992f48a0 BS |
2161 | abi_ulong xargs[6]; |
2162 | abi_ulong xxargs[1]; | |
6d5e216d FB |
2163 | }; |
2164 | ||
2165 | typedef struct { | |
2166 | struct { | |
992f48a0 BS |
2167 | abi_ulong psr; |
2168 | abi_ulong pc; | |
2169 | abi_ulong npc; | |
2170 | abi_ulong y; | |
2171 | abi_ulong u_regs[16]; /* globals and ins */ | |
6d5e216d FB |
2172 | } si_regs; |
2173 | int si_mask; | |
2174 | } __siginfo_t; | |
2175 | ||
2176 | typedef struct { | |
8954bae3 | 2177 | abi_ulong si_float_regs[32]; |
6d5e216d FB |
2178 | unsigned long si_fsr; |
2179 | unsigned long si_fpqdepth; | |
2180 | struct { | |
2181 | unsigned long *insn_addr; | |
2182 | unsigned long insn; | |
2183 | } si_fpqueue [16]; | |
c227f099 | 2184 | } qemu_siginfo_fpu_t; |
6d5e216d FB |
2185 | |
2186 | ||
2187 | struct target_signal_frame { | |
2188 | struct sparc_stackf ss; | |
2189 | __siginfo_t info; | |
f8b0aa25 | 2190 | abi_ulong fpu_save; |
992f48a0 BS |
2191 | abi_ulong insns[2] __attribute__ ((aligned (8))); |
2192 | abi_ulong extramask[TARGET_NSIG_WORDS - 1]; | |
2193 | abi_ulong extra_size; /* Should be 0 */ | |
c227f099 | 2194 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
2195 | }; |
2196 | struct target_rt_signal_frame { | |
2197 | struct sparc_stackf ss; | |
2198 | siginfo_t info; | |
992f48a0 | 2199 | abi_ulong regs[20]; |
6d5e216d | 2200 | sigset_t mask; |
f8b0aa25 | 2201 | abi_ulong fpu_save; |
6d5e216d FB |
2202 | unsigned int insns[2]; |
2203 | stack_t stack; | |
2204 | unsigned int extra_size; /* Should be 0 */ | |
c227f099 | 2205 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
2206 | }; |
2207 | ||
e80cfcfc FB |
2208 | #define UREG_O0 16 |
2209 | #define UREG_O6 22 | |
2210 | #define UREG_I0 0 | |
2211 | #define UREG_I1 1 | |
2212 | #define UREG_I2 2 | |
5bfb56b2 BS |
2213 | #define UREG_I3 3 |
2214 | #define UREG_I4 4 | |
2215 | #define UREG_I5 5 | |
e80cfcfc FB |
2216 | #define UREG_I6 6 |
2217 | #define UREG_I7 7 | |
2218 | #define UREG_L0 8 | |
6d5e216d FB |
2219 | #define UREG_FP UREG_I6 |
2220 | #define UREG_SP UREG_O6 | |
2221 | ||
624f7979 | 2222 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, |
05390248 AF |
2223 | CPUSPARCState *env, |
2224 | unsigned long framesize) | |
6d5e216d | 2225 | { |
459a4017 | 2226 | abi_ulong sp; |
6d5e216d FB |
2227 | |
2228 | sp = env->regwptr[UREG_FP]; | |
6d5e216d FB |
2229 | |
2230 | /* This is the X/Open sanctioned signal stack switching. */ | |
624f7979 | 2231 | if (sa->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
2232 | if (!on_sig_stack(sp) |
2233 | && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7)) | |
2234 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
6d5e216d | 2235 | } |
459a4017 | 2236 | return sp - framesize; |
6d5e216d FB |
2237 | } |
2238 | ||
2239 | static int | |
05390248 | 2240 | setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask) |
6d5e216d FB |
2241 | { |
2242 | int err = 0, i; | |
2243 | ||
1d8b512b RV |
2244 | __put_user(env->psr, &si->si_regs.psr); |
2245 | __put_user(env->pc, &si->si_regs.pc); | |
2246 | __put_user(env->npc, &si->si_regs.npc); | |
2247 | __put_user(env->y, &si->si_regs.y); | |
a315a145 | 2248 | for (i=0; i < 8; i++) { |
1d8b512b | 2249 | __put_user(env->gregs[i], &si->si_regs.u_regs[i]); |
6d5e216d | 2250 | } |
a315a145 | 2251 | for (i=0; i < 8; i++) { |
1d8b512b | 2252 | __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]); |
6d5e216d | 2253 | } |
1d8b512b | 2254 | __put_user(mask, &si->si_mask); |
6d5e216d FB |
2255 | return err; |
2256 | } | |
e80cfcfc | 2257 | |
80a9d035 | 2258 | #if 0 |
6d5e216d FB |
2259 | static int |
2260 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ | |
05390248 | 2261 | CPUSPARCState *env, unsigned long mask) |
6d5e216d FB |
2262 | { |
2263 | int err = 0; | |
2264 | ||
1d8b512b RV |
2265 | __put_user(mask, &sc->sigc_mask); |
2266 | __put_user(env->regwptr[UREG_SP], &sc->sigc_sp); | |
2267 | __put_user(env->pc, &sc->sigc_pc); | |
2268 | __put_user(env->npc, &sc->sigc_npc); | |
2269 | __put_user(env->psr, &sc->sigc_psr); | |
2270 | __put_user(env->gregs[1], &sc->sigc_g1); | |
2271 | __put_user(env->regwptr[UREG_O0], &sc->sigc_o0); | |
6d5e216d FB |
2272 | |
2273 | return err; | |
2274 | } | |
80a9d035 | 2275 | #endif |
6d5e216d FB |
2276 | #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7))) |
2277 | ||
624f7979 | 2278 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 2279 | target_sigset_t *set, CPUSPARCState *env) |
6d5e216d | 2280 | { |
459a4017 | 2281 | abi_ulong sf_addr; |
6d5e216d FB |
2282 | struct target_signal_frame *sf; |
2283 | int sigframe_size, err, i; | |
2284 | ||
2285 | /* 1. Make sure everything is clean */ | |
2286 | //synchronize_user_stack(); | |
2287 | ||
2288 | sigframe_size = NF_ALIGNEDSZ; | |
459a4017 | 2289 | sf_addr = get_sigframe(ka, env, sigframe_size); |
6d5e216d | 2290 | |
459a4017 FB |
2291 | sf = lock_user(VERIFY_WRITE, sf_addr, |
2292 | sizeof(struct target_signal_frame), 0); | |
2293 | if (!sf) | |
2294 | goto sigsegv; | |
2295 | ||
e80cfcfc | 2296 | //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); |
6d5e216d FB |
2297 | #if 0 |
2298 | if (invalid_frame_pointer(sf, sigframe_size)) | |
2299 | goto sigill_and_return; | |
2300 | #endif | |
2301 | /* 2. Save the current process state */ | |
2302 | err = setup___siginfo(&sf->info, env, set->sig[0]); | |
1d8b512b | 2303 | __put_user(0, &sf->extra_size); |
6d5e216d | 2304 | |
1d8b512b RV |
2305 | //save_fpu_state(regs, &sf->fpu_state); |
2306 | //__put_user(&sf->fpu_state, &sf->fpu_save); | |
6d5e216d | 2307 | |
1d8b512b | 2308 | __put_user(set->sig[0], &sf->info.si_mask); |
6d5e216d | 2309 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { |
1d8b512b | 2310 | __put_user(set->sig[i + 1], &sf->extramask[i]); |
6d5e216d FB |
2311 | } |
2312 | ||
a315a145 | 2313 | for (i = 0; i < 8; i++) { |
1d8b512b | 2314 | __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]); |
6d5e216d | 2315 | } |
a315a145 | 2316 | for (i = 0; i < 8; i++) { |
1d8b512b | 2317 | __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]); |
6d5e216d | 2318 | } |
6d5e216d FB |
2319 | if (err) |
2320 | goto sigsegv; | |
2321 | ||
2322 | /* 3. signal handler back-trampoline and parameters */ | |
459a4017 | 2323 | env->regwptr[UREG_FP] = sf_addr; |
6d5e216d | 2324 | env->regwptr[UREG_I0] = sig; |
459a4017 FB |
2325 | env->regwptr[UREG_I1] = sf_addr + |
2326 | offsetof(struct target_signal_frame, info); | |
2327 | env->regwptr[UREG_I2] = sf_addr + | |
2328 | offsetof(struct target_signal_frame, info); | |
6d5e216d FB |
2329 | |
2330 | /* 4. signal handler */ | |
624f7979 | 2331 | env->pc = ka->_sa_handler; |
6d5e216d FB |
2332 | env->npc = (env->pc + 4); |
2333 | /* 5. return to kernel instructions */ | |
624f7979 PB |
2334 | if (ka->sa_restorer) |
2335 | env->regwptr[UREG_I7] = ka->sa_restorer; | |
6d5e216d | 2336 | else { |
775b58d8 | 2337 | uint32_t val32; |
459a4017 FB |
2338 | |
2339 | env->regwptr[UREG_I7] = sf_addr + | |
2340 | offsetof(struct target_signal_frame, insns) - 2 * 4; | |
6d5e216d FB |
2341 | |
2342 | /* mov __NR_sigreturn, %g1 */ | |
775b58d8 | 2343 | val32 = 0x821020d8; |
1d8b512b | 2344 | __put_user(val32, &sf->insns[0]); |
6d5e216d FB |
2345 | |
2346 | /* t 0x10 */ | |
775b58d8 | 2347 | val32 = 0x91d02010; |
1d8b512b | 2348 | __put_user(val32, &sf->insns[1]); |
6d5e216d FB |
2349 | if (err) |
2350 | goto sigsegv; | |
2351 | ||
2352 | /* Flush instruction space. */ | |
2353 | //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0])); | |
80a9d035 | 2354 | // tb_flush(env); |
6d5e216d | 2355 | } |
459a4017 | 2356 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d | 2357 | return; |
459a4017 FB |
2358 | #if 0 |
2359 | sigill_and_return: | |
6d5e216d | 2360 | force_sig(TARGET_SIGILL); |
459a4017 | 2361 | #endif |
6d5e216d | 2362 | sigsegv: |
e80cfcfc | 2363 | //fprintf(stderr, "force_sig\n"); |
459a4017 | 2364 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d FB |
2365 | force_sig(TARGET_SIGSEGV); |
2366 | } | |
6d5e216d | 2367 | |
624f7979 | 2368 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 2369 | target_siginfo_t *info, |
05390248 | 2370 | target_sigset_t *set, CPUSPARCState *env) |
6d5e216d FB |
2371 | { |
2372 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2373 | } | |
2374 | ||
05390248 | 2375 | long do_sigreturn(CPUSPARCState *env) |
6d5e216d | 2376 | { |
f8b0aa25 | 2377 | abi_ulong sf_addr; |
6d5e216d | 2378 | struct target_signal_frame *sf; |
e80cfcfc | 2379 | uint32_t up_psr, pc, npc; |
c227f099 | 2380 | target_sigset_t set; |
e80cfcfc | 2381 | sigset_t host_set; |
1d8b512b | 2382 | int err=0, i; |
6d5e216d | 2383 | |
f8b0aa25 FB |
2384 | sf_addr = env->regwptr[UREG_FP]; |
2385 | if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) | |
2386 | goto segv_and_exit; | |
80a9d035 | 2387 | #if 0 |
e80cfcfc FB |
2388 | fprintf(stderr, "sigreturn\n"); |
2389 | fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); | |
80a9d035 | 2390 | #endif |
e80cfcfc | 2391 | //cpu_dump_state(env, stderr, fprintf, 0); |
6d5e216d FB |
2392 | |
2393 | /* 1. Make sure we are not getting garbage from the user */ | |
6d5e216d | 2394 | |
f8b0aa25 | 2395 | if (sf_addr & 3) |
6d5e216d FB |
2396 | goto segv_and_exit; |
2397 | ||
1d8b512b RV |
2398 | __get_user(pc, &sf->info.si_regs.pc); |
2399 | __get_user(npc, &sf->info.si_regs.npc); | |
6d5e216d | 2400 | |
6d5e216d FB |
2401 | if ((pc | npc) & 3) |
2402 | goto segv_and_exit; | |
2403 | ||
2404 | /* 2. Restore the state */ | |
1d8b512b | 2405 | __get_user(up_psr, &sf->info.si_regs.psr); |
e80cfcfc | 2406 | |
6d5e216d | 2407 | /* User can only change condition codes and FPU enabling in %psr. */ |
a315a145 FB |
2408 | env->psr = (up_psr & (PSR_ICC /* | PSR_EF */)) |
2409 | | (env->psr & ~(PSR_ICC /* | PSR_EF */)); | |
2410 | ||
2411 | env->pc = pc; | |
2412 | env->npc = npc; | |
1d8b512b | 2413 | __get_user(env->y, &sf->info.si_regs.y); |
a315a145 | 2414 | for (i=0; i < 8; i++) { |
1d8b512b | 2415 | __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]); |
e80cfcfc | 2416 | } |
a315a145 | 2417 | for (i=0; i < 8; i++) { |
1d8b512b | 2418 | __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]); |
e80cfcfc | 2419 | } |
6d5e216d | 2420 | |
2aec3a27 PM |
2421 | /* FIXME: implement FPU save/restore: |
2422 | * __get_user(fpu_save, &sf->fpu_save); | |
2423 | * if (fpu_save) | |
2424 | * err |= restore_fpu_state(env, fpu_save); | |
2425 | */ | |
6d5e216d FB |
2426 | |
2427 | /* This is pretty much atomic, no amount locking would prevent | |
2428 | * the races which exist anyways. | |
2429 | */ | |
1d8b512b | 2430 | __get_user(set.sig[0], &sf->info.si_mask); |
e80cfcfc | 2431 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1d8b512b | 2432 | __get_user(set.sig[i], &sf->extramask[i - 1]); |
e80cfcfc FB |
2433 | } |
2434 | ||
2435 | target_to_host_sigset_internal(&host_set, &set); | |
1c275925 | 2436 | do_sigprocmask(SIG_SETMASK, &host_set, NULL); |
6d5e216d FB |
2437 | |
2438 | if (err) | |
2439 | goto segv_and_exit; | |
f8b0aa25 | 2440 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
2441 | return env->regwptr[0]; |
2442 | ||
2443 | segv_and_exit: | |
f8b0aa25 | 2444 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
2445 | force_sig(TARGET_SIGSEGV); |
2446 | } | |
2447 | ||
05390248 | 2448 | long do_rt_sigreturn(CPUSPARCState *env) |
6d5e216d FB |
2449 | { |
2450 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2451 | return -TARGET_ENOSYS; |
6d5e216d FB |
2452 | } |
2453 | ||
459a4017 | 2454 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) |
5bfb56b2 BS |
2455 | #define MC_TSTATE 0 |
2456 | #define MC_PC 1 | |
2457 | #define MC_NPC 2 | |
2458 | #define MC_Y 3 | |
2459 | #define MC_G1 4 | |
2460 | #define MC_G2 5 | |
2461 | #define MC_G3 6 | |
2462 | #define MC_G4 7 | |
2463 | #define MC_G5 8 | |
2464 | #define MC_G6 9 | |
2465 | #define MC_G7 10 | |
2466 | #define MC_O0 11 | |
2467 | #define MC_O1 12 | |
2468 | #define MC_O2 13 | |
2469 | #define MC_O3 14 | |
2470 | #define MC_O4 15 | |
2471 | #define MC_O5 16 | |
2472 | #define MC_O6 17 | |
2473 | #define MC_O7 18 | |
2474 | #define MC_NGREG 19 | |
2475 | ||
c227f099 AL |
2476 | typedef abi_ulong target_mc_greg_t; |
2477 | typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG]; | |
5bfb56b2 BS |
2478 | |
2479 | struct target_mc_fq { | |
992f48a0 | 2480 | abi_ulong *mcfq_addr; |
5bfb56b2 BS |
2481 | uint32_t mcfq_insn; |
2482 | }; | |
2483 | ||
2484 | struct target_mc_fpu { | |
2485 | union { | |
2486 | uint32_t sregs[32]; | |
2487 | uint64_t dregs[32]; | |
2488 | //uint128_t qregs[16]; | |
2489 | } mcfpu_fregs; | |
992f48a0 BS |
2490 | abi_ulong mcfpu_fsr; |
2491 | abi_ulong mcfpu_fprs; | |
2492 | abi_ulong mcfpu_gsr; | |
5bfb56b2 BS |
2493 | struct target_mc_fq *mcfpu_fq; |
2494 | unsigned char mcfpu_qcnt; | |
2495 | unsigned char mcfpu_qentsz; | |
2496 | unsigned char mcfpu_enab; | |
2497 | }; | |
c227f099 | 2498 | typedef struct target_mc_fpu target_mc_fpu_t; |
5bfb56b2 BS |
2499 | |
2500 | typedef struct { | |
c227f099 AL |
2501 | target_mc_gregset_t mc_gregs; |
2502 | target_mc_greg_t mc_fp; | |
2503 | target_mc_greg_t mc_i7; | |
2504 | target_mc_fpu_t mc_fpregs; | |
2505 | } target_mcontext_t; | |
5bfb56b2 BS |
2506 | |
2507 | struct target_ucontext { | |
60e99246 AJ |
2508 | struct target_ucontext *tuc_link; |
2509 | abi_ulong tuc_flags; | |
2510 | target_sigset_t tuc_sigmask; | |
2511 | target_mcontext_t tuc_mcontext; | |
5bfb56b2 BS |
2512 | }; |
2513 | ||
2514 | /* A V9 register window */ | |
2515 | struct target_reg_window { | |
992f48a0 BS |
2516 | abi_ulong locals[8]; |
2517 | abi_ulong ins[8]; | |
5bfb56b2 BS |
2518 | }; |
2519 | ||
2520 | #define TARGET_STACK_BIAS 2047 | |
2521 | ||
2522 | /* {set, get}context() needed for 64-bit SparcLinux userland. */ | |
2523 | void sparc64_set_context(CPUSPARCState *env) | |
2524 | { | |
459a4017 FB |
2525 | abi_ulong ucp_addr; |
2526 | struct target_ucontext *ucp; | |
c227f099 | 2527 | target_mc_gregset_t *grp; |
992f48a0 | 2528 | abi_ulong pc, npc, tstate; |
459a4017 | 2529 | abi_ulong fp, i7, w_addr; |
1d8b512b | 2530 | int err = 0; |
5bfb56b2 | 2531 | unsigned int i; |
5bfb56b2 | 2532 | |
459a4017 FB |
2533 | ucp_addr = env->regwptr[UREG_I0]; |
2534 | if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) | |
2535 | goto do_sigsegv; | |
60e99246 | 2536 | grp = &ucp->tuc_mcontext.mc_gregs; |
1d8b512b RV |
2537 | __get_user(pc, &((*grp)[MC_PC])); |
2538 | __get_user(npc, &((*grp)[MC_NPC])); | |
5bfb56b2 BS |
2539 | if (err || ((pc | npc) & 3)) |
2540 | goto do_sigsegv; | |
2541 | if (env->regwptr[UREG_I1]) { | |
c227f099 | 2542 | target_sigset_t target_set; |
5bfb56b2 BS |
2543 | sigset_t set; |
2544 | ||
2545 | if (TARGET_NSIG_WORDS == 1) { | |
60e99246 | 2546 | if (__get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0])) |
5bfb56b2 BS |
2547 | goto do_sigsegv; |
2548 | } else { | |
459a4017 | 2549 | abi_ulong *src, *dst; |
60e99246 | 2550 | src = ucp->tuc_sigmask.sig; |
459a4017 | 2551 | dst = target_set.sig; |
0d9e61c2 | 2552 | for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) { |
1d8b512b | 2553 | __get_user(*dst, src); |
0d9e61c2 | 2554 | } |
5bfb56b2 BS |
2555 | if (err) |
2556 | goto do_sigsegv; | |
2557 | } | |
2558 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 2559 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
5bfb56b2 BS |
2560 | } |
2561 | env->pc = pc; | |
2562 | env->npc = npc; | |
1d8b512b RV |
2563 | __get_user(env->y, &((*grp)[MC_Y])); |
2564 | __get_user(tstate, &((*grp)[MC_TSTATE])); | |
5bfb56b2 | 2565 | env->asi = (tstate >> 24) & 0xff; |
5a834bb4 BS |
2566 | cpu_put_ccr(env, tstate >> 32); |
2567 | cpu_put_cwp64(env, tstate & 0x1f); | |
1d8b512b RV |
2568 | __get_user(env->gregs[1], (&(*grp)[MC_G1])); |
2569 | __get_user(env->gregs[2], (&(*grp)[MC_G2])); | |
2570 | __get_user(env->gregs[3], (&(*grp)[MC_G3])); | |
2571 | __get_user(env->gregs[4], (&(*grp)[MC_G4])); | |
2572 | __get_user(env->gregs[5], (&(*grp)[MC_G5])); | |
2573 | __get_user(env->gregs[6], (&(*grp)[MC_G6])); | |
2574 | __get_user(env->gregs[7], (&(*grp)[MC_G7])); | |
2575 | __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0])); | |
2576 | __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1])); | |
2577 | __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2])); | |
2578 | __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3])); | |
2579 | __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4])); | |
2580 | __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5])); | |
2581 | __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6])); | |
2582 | __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7])); | |
2583 | ||
2584 | __get_user(fp, &(ucp->tuc_mcontext.mc_fp)); | |
2585 | __get_user(i7, &(ucp->tuc_mcontext.mc_i7)); | |
579a97f7 | 2586 | |
459a4017 FB |
2587 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2588 | if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2589 | abi_ulong) != 0) | |
2590 | goto do_sigsegv; | |
2591 | if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2592 | abi_ulong) != 0) | |
2593 | goto do_sigsegv; | |
c7b016ba PM |
2594 | /* FIXME this does not match how the kernel handles the FPU in |
2595 | * its sparc64_set_context implementation. In particular the FPU | |
2596 | * is only restored if fenab is non-zero in: | |
2597 | * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab)); | |
2598 | */ | |
60e99246 | 2599 | err |= __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs)); |
459a4017 | 2600 | { |
30038fd8 RH |
2601 | uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
2602 | for (i = 0; i < 64; i++, src++) { | |
2603 | if (i & 1) { | |
1d8b512b | 2604 | __get_user(env->fpr[i/2].l.lower, src); |
30038fd8 | 2605 | } else { |
1d8b512b | 2606 | __get_user(env->fpr[i/2].l.upper, src); |
30038fd8 RH |
2607 | } |
2608 | } | |
459a4017 | 2609 | } |
1d8b512b RV |
2610 | __get_user(env->fsr, |
2611 | &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr)); | |
2612 | __get_user(env->gsr, | |
2613 | &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr)); | |
5bfb56b2 BS |
2614 | if (err) |
2615 | goto do_sigsegv; | |
459a4017 | 2616 | unlock_user_struct(ucp, ucp_addr, 0); |
5bfb56b2 BS |
2617 | return; |
2618 | do_sigsegv: | |
459a4017 | 2619 | unlock_user_struct(ucp, ucp_addr, 0); |
66393fb9 | 2620 | force_sig(TARGET_SIGSEGV); |
5bfb56b2 BS |
2621 | } |
2622 | ||
2623 | void sparc64_get_context(CPUSPARCState *env) | |
2624 | { | |
459a4017 FB |
2625 | abi_ulong ucp_addr; |
2626 | struct target_ucontext *ucp; | |
c227f099 AL |
2627 | target_mc_gregset_t *grp; |
2628 | target_mcontext_t *mcp; | |
459a4017 | 2629 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2630 | int err; |
2631 | unsigned int i; | |
c227f099 | 2632 | target_sigset_t target_set; |
5bfb56b2 BS |
2633 | sigset_t set; |
2634 | ||
459a4017 FB |
2635 | ucp_addr = env->regwptr[UREG_I0]; |
2636 | if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) | |
2637 | goto do_sigsegv; | |
2638 | ||
60e99246 | 2639 | mcp = &ucp->tuc_mcontext; |
5bfb56b2 BS |
2640 | grp = &mcp->mc_gregs; |
2641 | ||
2642 | /* Skip over the trap instruction, first. */ | |
2643 | env->pc = env->npc; | |
2644 | env->npc += 4; | |
2645 | ||
2646 | err = 0; | |
2647 | ||
1c275925 | 2648 | do_sigprocmask(0, NULL, &set); |
5bfb56b2 | 2649 | host_to_target_sigset_internal(&target_set, &set); |
459a4017 | 2650 | if (TARGET_NSIG_WORDS == 1) { |
1d8b512b RV |
2651 | __put_user(target_set.sig[0], |
2652 | (abi_ulong *)&ucp->tuc_sigmask); | |
459a4017 FB |
2653 | } else { |
2654 | abi_ulong *src, *dst; | |
2655 | src = target_set.sig; | |
60e99246 | 2656 | dst = ucp->tuc_sigmask.sig; |
0d9e61c2 | 2657 | for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) { |
1d8b512b | 2658 | __put_user(*src, dst); |
0d9e61c2 | 2659 | } |
5bfb56b2 BS |
2660 | if (err) |
2661 | goto do_sigsegv; | |
2662 | } | |
2663 | ||
459a4017 | 2664 | /* XXX: tstate must be saved properly */ |
1d8b512b RV |
2665 | // __put_user(env->tstate, &((*grp)[MC_TSTATE])); |
2666 | __put_user(env->pc, &((*grp)[MC_PC])); | |
2667 | __put_user(env->npc, &((*grp)[MC_NPC])); | |
2668 | __put_user(env->y, &((*grp)[MC_Y])); | |
2669 | __put_user(env->gregs[1], &((*grp)[MC_G1])); | |
2670 | __put_user(env->gregs[2], &((*grp)[MC_G2])); | |
2671 | __put_user(env->gregs[3], &((*grp)[MC_G3])); | |
2672 | __put_user(env->gregs[4], &((*grp)[MC_G4])); | |
2673 | __put_user(env->gregs[5], &((*grp)[MC_G5])); | |
2674 | __put_user(env->gregs[6], &((*grp)[MC_G6])); | |
2675 | __put_user(env->gregs[7], &((*grp)[MC_G7])); | |
2676 | __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0])); | |
2677 | __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1])); | |
2678 | __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2])); | |
2679 | __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3])); | |
2680 | __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4])); | |
2681 | __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5])); | |
2682 | __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6])); | |
2683 | __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7])); | |
579a97f7 | 2684 | |
459a4017 FB |
2685 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2686 | fp = i7 = 0; | |
2687 | if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2688 | abi_ulong) != 0) | |
2689 | goto do_sigsegv; | |
2690 | if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2691 | abi_ulong) != 0) | |
2692 | goto do_sigsegv; | |
1d8b512b RV |
2693 | __put_user(fp, &(mcp->mc_fp)); |
2694 | __put_user(i7, &(mcp->mc_i7)); | |
5bfb56b2 | 2695 | |
459a4017 | 2696 | { |
30038fd8 RH |
2697 | uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
2698 | for (i = 0; i < 64; i++, dst++) { | |
2699 | if (i & 1) { | |
1d8b512b | 2700 | __put_user(env->fpr[i/2].l.lower, dst); |
30038fd8 | 2701 | } else { |
1d8b512b | 2702 | __put_user(env->fpr[i/2].l.upper, dst); |
30038fd8 RH |
2703 | } |
2704 | } | |
459a4017 | 2705 | } |
1d8b512b RV |
2706 | __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); |
2707 | __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); | |
2708 | __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs)); | |
5bfb56b2 BS |
2709 | |
2710 | if (err) | |
2711 | goto do_sigsegv; | |
459a4017 | 2712 | unlock_user_struct(ucp, ucp_addr, 1); |
5bfb56b2 BS |
2713 | return; |
2714 | do_sigsegv: | |
459a4017 | 2715 | unlock_user_struct(ucp, ucp_addr, 1); |
66393fb9 | 2716 | force_sig(TARGET_SIGSEGV); |
5bfb56b2 BS |
2717 | } |
2718 | #endif | |
ff970904 | 2719 | #elif defined(TARGET_MIPS) || defined(TARGET_MIPS64) |
106ec879 | 2720 | |
ff970904 | 2721 | # if defined(TARGET_ABI_MIPSO32) |
106ec879 FB |
2722 | struct target_sigcontext { |
2723 | uint32_t sc_regmask; /* Unused */ | |
2724 | uint32_t sc_status; | |
2725 | uint64_t sc_pc; | |
2726 | uint64_t sc_regs[32]; | |
2727 | uint64_t sc_fpregs[32]; | |
2728 | uint32_t sc_ownedfp; /* Unused */ | |
2729 | uint32_t sc_fpc_csr; | |
2730 | uint32_t sc_fpc_eir; /* Unused */ | |
2731 | uint32_t sc_used_math; | |
2732 | uint32_t sc_dsp; /* dsp status, was sc_ssflags */ | |
94c5495d | 2733 | uint32_t pad0; |
106ec879 FB |
2734 | uint64_t sc_mdhi; |
2735 | uint64_t sc_mdlo; | |
2736 | target_ulong sc_hi1; /* Was sc_cause */ | |
2737 | target_ulong sc_lo1; /* Was sc_badvaddr */ | |
2738 | target_ulong sc_hi2; /* Was sc_sigset[4] */ | |
2739 | target_ulong sc_lo2; | |
2740 | target_ulong sc_hi3; | |
2741 | target_ulong sc_lo3; | |
2742 | }; | |
ff970904 RH |
2743 | # else /* N32 || N64 */ |
2744 | struct target_sigcontext { | |
2745 | uint64_t sc_regs[32]; | |
2746 | uint64_t sc_fpregs[32]; | |
2747 | uint64_t sc_mdhi; | |
2748 | uint64_t sc_hi1; | |
2749 | uint64_t sc_hi2; | |
2750 | uint64_t sc_hi3; | |
2751 | uint64_t sc_mdlo; | |
2752 | uint64_t sc_lo1; | |
2753 | uint64_t sc_lo2; | |
2754 | uint64_t sc_lo3; | |
2755 | uint64_t sc_pc; | |
2756 | uint32_t sc_fpc_csr; | |
2757 | uint32_t sc_used_math; | |
2758 | uint32_t sc_dsp; | |
2759 | uint32_t sc_reserved; | |
2760 | }; | |
2761 | # endif /* O32 */ | |
106ec879 FB |
2762 | |
2763 | struct sigframe { | |
2764 | uint32_t sf_ass[4]; /* argument save space for o32 */ | |
2765 | uint32_t sf_code[2]; /* signal trampoline */ | |
2766 | struct target_sigcontext sf_sc; | |
c227f099 | 2767 | target_sigset_t sf_mask; |
106ec879 FB |
2768 | }; |
2769 | ||
0b1bcb00 | 2770 | struct target_ucontext { |
60e99246 AJ |
2771 | target_ulong tuc_flags; |
2772 | target_ulong tuc_link; | |
2773 | target_stack_t tuc_stack; | |
94c5495d | 2774 | target_ulong pad0; |
60e99246 AJ |
2775 | struct target_sigcontext tuc_mcontext; |
2776 | target_sigset_t tuc_sigmask; | |
0b1bcb00 PB |
2777 | }; |
2778 | ||
2779 | struct target_rt_sigframe { | |
2780 | uint32_t rs_ass[4]; /* argument save space for o32 */ | |
2781 | uint32_t rs_code[2]; /* signal trampoline */ | |
2782 | struct target_siginfo rs_info; | |
2783 | struct target_ucontext rs_uc; | |
2784 | }; | |
2785 | ||
106ec879 FB |
2786 | /* Install trampoline to jump back from signal handler */ |
2787 | static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall) | |
2788 | { | |
084d0497 | 2789 | int err = 0; |
106ec879 FB |
2790 | |
2791 | /* | |
084d0497 RH |
2792 | * Set up the return code ... |
2793 | * | |
2794 | * li v0, __NR__foo_sigreturn | |
2795 | * syscall | |
2796 | */ | |
106ec879 | 2797 | |
1d8b512b RV |
2798 | __put_user(0x24020000 + syscall, tramp + 0); |
2799 | __put_user(0x0000000c , tramp + 1); | |
106ec879 FB |
2800 | return err; |
2801 | } | |
2802 | ||
41ecc72b RV |
2803 | static inline void setup_sigcontext(CPUMIPSState *regs, |
2804 | struct target_sigcontext *sc) | |
106ec879 | 2805 | { |
084d0497 | 2806 | int i; |
106ec879 | 2807 | |
1d8b512b | 2808 | __put_user(exception_resume_pc(regs), &sc->sc_pc); |
1239b472 | 2809 | regs->hflags &= ~MIPS_HFLAG_BMASK; |
106ec879 | 2810 | |
084d0497 RH |
2811 | __put_user(0, &sc->sc_regs[0]); |
2812 | for (i = 1; i < 32; ++i) { | |
1d8b512b | 2813 | __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); |
084d0497 | 2814 | } |
106ec879 | 2815 | |
1d8b512b RV |
2816 | __put_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2817 | __put_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2818 | |
084d0497 RH |
2819 | /* Rather than checking for dsp existence, always copy. The storage |
2820 | would just be garbage otherwise. */ | |
1d8b512b RV |
2821 | __put_user(regs->active_tc.HI[1], &sc->sc_hi1); |
2822 | __put_user(regs->active_tc.HI[2], &sc->sc_hi2); | |
2823 | __put_user(regs->active_tc.HI[3], &sc->sc_hi3); | |
2824 | __put_user(regs->active_tc.LO[1], &sc->sc_lo1); | |
2825 | __put_user(regs->active_tc.LO[2], &sc->sc_lo2); | |
2826 | __put_user(regs->active_tc.LO[3], &sc->sc_lo3); | |
084d0497 RH |
2827 | { |
2828 | uint32_t dsp = cpu_rddsp(0x3ff, regs); | |
1d8b512b | 2829 | __put_user(dsp, &sc->sc_dsp); |
106ec879 | 2830 | } |
106ec879 | 2831 | |
1d8b512b | 2832 | __put_user(1, &sc->sc_used_math); |
106ec879 | 2833 | |
084d0497 | 2834 | for (i = 0; i < 32; ++i) { |
1d8b512b | 2835 | __put_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]); |
106ec879 | 2836 | } |
106ec879 FB |
2837 | } |
2838 | ||
016d2e1d | 2839 | static inline void |
05390248 | 2840 | restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc) |
106ec879 | 2841 | { |
084d0497 | 2842 | int i; |
106ec879 | 2843 | |
1d8b512b | 2844 | __get_user(regs->CP0_EPC, &sc->sc_pc); |
106ec879 | 2845 | |
1d8b512b RV |
2846 | __get_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2847 | __get_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2848 | |
084d0497 | 2849 | for (i = 1; i < 32; ++i) { |
1d8b512b | 2850 | __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); |
106ec879 | 2851 | } |
106ec879 | 2852 | |
1d8b512b RV |
2853 | __get_user(regs->active_tc.HI[1], &sc->sc_hi1); |
2854 | __get_user(regs->active_tc.HI[2], &sc->sc_hi2); | |
2855 | __get_user(regs->active_tc.HI[3], &sc->sc_hi3); | |
2856 | __get_user(regs->active_tc.LO[1], &sc->sc_lo1); | |
2857 | __get_user(regs->active_tc.LO[2], &sc->sc_lo2); | |
2858 | __get_user(regs->active_tc.LO[3], &sc->sc_lo3); | |
084d0497 RH |
2859 | { |
2860 | uint32_t dsp; | |
1d8b512b | 2861 | __get_user(dsp, &sc->sc_dsp); |
084d0497 RH |
2862 | cpu_wrdsp(dsp, 0x3ff, regs); |
2863 | } | |
106ec879 | 2864 | |
084d0497 | 2865 | for (i = 0; i < 32; ++i) { |
1d8b512b | 2866 | __get_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]); |
106ec879 | 2867 | } |
106ec879 | 2868 | } |
ff970904 | 2869 | |
106ec879 FB |
2870 | /* |
2871 | * Determine which stack to use.. | |
2872 | */ | |
579a97f7 | 2873 | static inline abi_ulong |
05390248 | 2874 | get_sigframe(struct target_sigaction *ka, CPUMIPSState *regs, size_t frame_size) |
106ec879 FB |
2875 | { |
2876 | unsigned long sp; | |
2877 | ||
2878 | /* Default to using normal stack */ | |
b5dc7732 | 2879 | sp = regs->active_tc.gpr[29]; |
106ec879 FB |
2880 | |
2881 | /* | |
93148aa5 | 2882 | * FPU emulator may have its own trampoline active just |
106ec879 FB |
2883 | * above the user stack, 16-bytes before the next lowest |
2884 | * 16 byte boundary. Try to avoid trashing it. | |
2885 | */ | |
2886 | sp -= 32; | |
2887 | ||
106ec879 | 2888 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 2889 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { |
a04e134a TS |
2890 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2891 | } | |
106ec879 | 2892 | |
579a97f7 | 2893 | return (sp - frame_size) & ~7; |
106ec879 FB |
2894 | } |
2895 | ||
ea3164aa KCY |
2896 | static void mips_set_hflags_isa_mode_from_pc(CPUMIPSState *env) |
2897 | { | |
2898 | if (env->insn_flags & (ASE_MIPS16 | ASE_MICROMIPS)) { | |
2899 | env->hflags &= ~MIPS_HFLAG_M16; | |
2900 | env->hflags |= (env->active_tc.PC & 1) << MIPS_HFLAG_M16_SHIFT; | |
2901 | env->active_tc.PC &= ~(target_ulong) 1; | |
2902 | } | |
2903 | } | |
2904 | ||
ff970904 | 2905 | # if defined(TARGET_ABI_MIPSO32) |
579a97f7 | 2906 | /* compare linux/arch/mips/kernel/signal.c:setup_frame() */ |
624f7979 | 2907 | static void setup_frame(int sig, struct target_sigaction * ka, |
05390248 | 2908 | target_sigset_t *set, CPUMIPSState *regs) |
106ec879 FB |
2909 | { |
2910 | struct sigframe *frame; | |
579a97f7 | 2911 | abi_ulong frame_addr; |
106ec879 FB |
2912 | int i; |
2913 | ||
579a97f7 FB |
2914 | frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
2915 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
106ec879 FB |
2916 | goto give_sigsegv; |
2917 | ||
2918 | install_sigtramp(frame->sf_code, TARGET_NR_sigreturn); | |
2919 | ||
41ecc72b | 2920 | setup_sigcontext(regs, &frame->sf_sc); |
106ec879 FB |
2921 | |
2922 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
0188fadb | 2923 | __put_user(set->sig[i], &frame->sf_mask.sig[i]); |
106ec879 FB |
2924 | } |
2925 | ||
2926 | /* | |
2927 | * Arguments to signal handler: | |
2928 | * | |
2929 | * a0 = signal number | |
2930 | * a1 = 0 (should be cause) | |
2931 | * a2 = pointer to struct sigcontext | |
2932 | * | |
2933 | * $25 and PC point to the signal handler, $29 points to the | |
2934 | * struct sigframe. | |
2935 | */ | |
b5dc7732 TS |
2936 | regs->active_tc.gpr[ 4] = sig; |
2937 | regs->active_tc.gpr[ 5] = 0; | |
2938 | regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc); | |
2939 | regs->active_tc.gpr[29] = frame_addr; | |
2940 | regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code); | |
106ec879 FB |
2941 | /* The original kernel code sets CP0_EPC to the handler |
2942 | * since it returns to userland using eret | |
2943 | * we cannot do this here, and we must set PC directly */ | |
b5dc7732 | 2944 | regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler; |
ea3164aa | 2945 | mips_set_hflags_isa_mode_from_pc(regs); |
579a97f7 | 2946 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 FB |
2947 | return; |
2948 | ||
2949 | give_sigsegv: | |
2950 | force_sig(TARGET_SIGSEGV/*, current*/); | |
106ec879 FB |
2951 | } |
2952 | ||
05390248 | 2953 | long do_sigreturn(CPUMIPSState *regs) |
106ec879 | 2954 | { |
388bb21a | 2955 | struct sigframe *frame; |
579a97f7 | 2956 | abi_ulong frame_addr; |
388bb21a | 2957 | sigset_t blocked; |
c227f099 | 2958 | target_sigset_t target_set; |
388bb21a | 2959 | int i; |
106ec879 FB |
2960 | |
2961 | #if defined(DEBUG_SIGNAL) | |
388bb21a | 2962 | fprintf(stderr, "do_sigreturn\n"); |
106ec879 | 2963 | #endif |
b5dc7732 | 2964 | frame_addr = regs->active_tc.gpr[29]; |
579a97f7 | 2965 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
106ec879 FB |
2966 | goto badframe; |
2967 | ||
388bb21a | 2968 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
f5f601af | 2969 | __get_user(target_set.sig[i], &frame->sf_mask.sig[i]); |
388bb21a | 2970 | } |
106ec879 | 2971 | |
388bb21a | 2972 | target_to_host_sigset_internal(&blocked, &target_set); |
1c275925 | 2973 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
106ec879 | 2974 | |
016d2e1d | 2975 | restore_sigcontext(regs, &frame->sf_sc); |
106ec879 FB |
2976 | |
2977 | #if 0 | |
388bb21a TS |
2978 | /* |
2979 | * Don't let your children do this ... | |
2980 | */ | |
2981 | __asm__ __volatile__( | |
106ec879 FB |
2982 | "move\t$29, %0\n\t" |
2983 | "j\tsyscall_exit" | |
2984 | :/* no outputs */ | |
2985 | :"r" (®s)); | |
388bb21a | 2986 | /* Unreached */ |
106ec879 | 2987 | #endif |
3b46e624 | 2988 | |
b5dc7732 | 2989 | regs->active_tc.PC = regs->CP0_EPC; |
ea3164aa | 2990 | mips_set_hflags_isa_mode_from_pc(regs); |
388bb21a | 2991 | /* I am not sure this is right, but it seems to work |
106ec879 FB |
2992 | * maybe a problem with nested signals ? */ |
2993 | regs->CP0_EPC = 0; | |
0b1bcb00 | 2994 | return -TARGET_QEMU_ESIGRETURN; |
106ec879 FB |
2995 | |
2996 | badframe: | |
388bb21a TS |
2997 | force_sig(TARGET_SIGSEGV/*, current*/); |
2998 | return 0; | |
106ec879 | 2999 | } |
ff970904 | 3000 | # endif /* O32 */ |
106ec879 | 3001 | |
624f7979 | 3002 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3003 | target_siginfo_t *info, |
05390248 | 3004 | target_sigset_t *set, CPUMIPSState *env) |
106ec879 | 3005 | { |
0b1bcb00 PB |
3006 | struct target_rt_sigframe *frame; |
3007 | abi_ulong frame_addr; | |
3008 | int i; | |
3009 | ||
3010 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
3011 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3012 | goto give_sigsegv; | |
3013 | ||
3014 | install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn); | |
3015 | ||
3016 | copy_siginfo_to_user(&frame->rs_info, info); | |
3017 | ||
60e99246 AJ |
3018 | __put_user(0, &frame->rs_uc.tuc_flags); |
3019 | __put_user(0, &frame->rs_uc.tuc_link); | |
3020 | __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp); | |
3021 | __put_user(target_sigaltstack_used.ss_size, &frame->rs_uc.tuc_stack.ss_size); | |
0b1bcb00 | 3022 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
60e99246 | 3023 | &frame->rs_uc.tuc_stack.ss_flags); |
0b1bcb00 | 3024 | |
60e99246 | 3025 | setup_sigcontext(env, &frame->rs_uc.tuc_mcontext); |
0b1bcb00 PB |
3026 | |
3027 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
60e99246 | 3028 | __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]); |
0b1bcb00 PB |
3029 | } |
3030 | ||
3031 | /* | |
3032 | * Arguments to signal handler: | |
3033 | * | |
3034 | * a0 = signal number | |
02d2bd5d | 3035 | * a1 = pointer to siginfo_t |
0b1bcb00 PB |
3036 | * a2 = pointer to struct ucontext |
3037 | * | |
3038 | * $25 and PC point to the signal handler, $29 points to the | |
3039 | * struct sigframe. | |
3040 | */ | |
3041 | env->active_tc.gpr[ 4] = sig; | |
3042 | env->active_tc.gpr[ 5] = frame_addr | |
3043 | + offsetof(struct target_rt_sigframe, rs_info); | |
3044 | env->active_tc.gpr[ 6] = frame_addr | |
3045 | + offsetof(struct target_rt_sigframe, rs_uc); | |
3046 | env->active_tc.gpr[29] = frame_addr; | |
3047 | env->active_tc.gpr[31] = frame_addr | |
3048 | + offsetof(struct target_rt_sigframe, rs_code); | |
3049 | /* The original kernel code sets CP0_EPC to the handler | |
3050 | * since it returns to userland using eret | |
3051 | * we cannot do this here, and we must set PC directly */ | |
3052 | env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler; | |
ea3164aa | 3053 | mips_set_hflags_isa_mode_from_pc(env); |
0b1bcb00 PB |
3054 | unlock_user_struct(frame, frame_addr, 1); |
3055 | return; | |
3056 | ||
3057 | give_sigsegv: | |
3058 | unlock_user_struct(frame, frame_addr, 1); | |
3059 | force_sig(TARGET_SIGSEGV/*, current*/); | |
106ec879 FB |
3060 | } |
3061 | ||
05390248 | 3062 | long do_rt_sigreturn(CPUMIPSState *env) |
106ec879 | 3063 | { |
0b1bcb00 PB |
3064 | struct target_rt_sigframe *frame; |
3065 | abi_ulong frame_addr; | |
3066 | sigset_t blocked; | |
3067 | ||
3068 | #if defined(DEBUG_SIGNAL) | |
3069 | fprintf(stderr, "do_rt_sigreturn\n"); | |
3070 | #endif | |
3071 | frame_addr = env->active_tc.gpr[29]; | |
3072 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
3073 | goto badframe; | |
3074 | ||
60e99246 | 3075 | target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask); |
1c275925 | 3076 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
0b1bcb00 | 3077 | |
016d2e1d | 3078 | restore_sigcontext(env, &frame->rs_uc.tuc_mcontext); |
0b1bcb00 PB |
3079 | |
3080 | if (do_sigaltstack(frame_addr + | |
60e99246 | 3081 | offsetof(struct target_rt_sigframe, rs_uc.tuc_stack), |
0b1bcb00 PB |
3082 | 0, get_sp_from_cpustate(env)) == -EFAULT) |
3083 | goto badframe; | |
3084 | ||
3085 | env->active_tc.PC = env->CP0_EPC; | |
ea3164aa | 3086 | mips_set_hflags_isa_mode_from_pc(env); |
0b1bcb00 PB |
3087 | /* I am not sure this is right, but it seems to work |
3088 | * maybe a problem with nested signals ? */ | |
3089 | env->CP0_EPC = 0; | |
3090 | return -TARGET_QEMU_ESIGRETURN; | |
3091 | ||
3092 | badframe: | |
3093 | force_sig(TARGET_SIGSEGV/*, current*/); | |
3094 | return 0; | |
106ec879 | 3095 | } |
6d5e216d | 3096 | |
c3b5bc8a TS |
3097 | #elif defined(TARGET_SH4) |
3098 | ||
3099 | /* | |
3100 | * code and data structures from linux kernel: | |
3101 | * include/asm-sh/sigcontext.h | |
3102 | * arch/sh/kernel/signal.c | |
3103 | */ | |
3104 | ||
3105 | struct target_sigcontext { | |
3106 | target_ulong oldmask; | |
3107 | ||
3108 | /* CPU registers */ | |
3109 | target_ulong sc_gregs[16]; | |
3110 | target_ulong sc_pc; | |
3111 | target_ulong sc_pr; | |
3112 | target_ulong sc_sr; | |
3113 | target_ulong sc_gbr; | |
3114 | target_ulong sc_mach; | |
3115 | target_ulong sc_macl; | |
3116 | ||
3117 | /* FPU registers */ | |
3118 | target_ulong sc_fpregs[16]; | |
3119 | target_ulong sc_xfpregs[16]; | |
3120 | unsigned int sc_fpscr; | |
3121 | unsigned int sc_fpul; | |
3122 | unsigned int sc_ownedfp; | |
3123 | }; | |
3124 | ||
3125 | struct target_sigframe | |
3126 | { | |
3127 | struct target_sigcontext sc; | |
3128 | target_ulong extramask[TARGET_NSIG_WORDS-1]; | |
3129 | uint16_t retcode[3]; | |
3130 | }; | |
3131 | ||
3132 | ||
3133 | struct target_ucontext { | |
60e99246 AJ |
3134 | target_ulong tuc_flags; |
3135 | struct target_ucontext *tuc_link; | |
3136 | target_stack_t tuc_stack; | |
3137 | struct target_sigcontext tuc_mcontext; | |
3138 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
c3b5bc8a TS |
3139 | }; |
3140 | ||
3141 | struct target_rt_sigframe | |
3142 | { | |
3143 | struct target_siginfo info; | |
3144 | struct target_ucontext uc; | |
3145 | uint16_t retcode[3]; | |
3146 | }; | |
3147 | ||
3148 | ||
3149 | #define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */ | |
3150 | #define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */ | |
3151 | ||
624f7979 | 3152 | static abi_ulong get_sigframe(struct target_sigaction *ka, |
c3b5bc8a TS |
3153 | unsigned long sp, size_t frame_size) |
3154 | { | |
624f7979 | 3155 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) { |
c3b5bc8a TS |
3156 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
3157 | } | |
3158 | ||
3159 | return (sp - frame_size) & -8ul; | |
3160 | } | |
3161 | ||
41ecc72b | 3162 | static void setup_sigcontext(struct target_sigcontext *sc, |
05390248 | 3163 | CPUSH4State *regs, unsigned long mask) |
c3b5bc8a | 3164 | { |
d8714436 | 3165 | int i; |
c3b5bc8a | 3166 | |
1d8b512b | 3167 | #define COPY(x) __put_user(regs->x, &sc->sc_##x) |
c3b5bc8a TS |
3168 | COPY(gregs[0]); COPY(gregs[1]); |
3169 | COPY(gregs[2]); COPY(gregs[3]); | |
3170 | COPY(gregs[4]); COPY(gregs[5]); | |
3171 | COPY(gregs[6]); COPY(gregs[7]); | |
3172 | COPY(gregs[8]); COPY(gregs[9]); | |
3173 | COPY(gregs[10]); COPY(gregs[11]); | |
3174 | COPY(gregs[12]); COPY(gregs[13]); | |
3175 | COPY(gregs[14]); COPY(gregs[15]); | |
3176 | COPY(gbr); COPY(mach); | |
3177 | COPY(macl); COPY(pr); | |
3178 | COPY(sr); COPY(pc); | |
3179 | #undef COPY | |
3180 | ||
d8714436 | 3181 | for (i=0; i<16; i++) { |
1d8b512b | 3182 | __put_user(regs->fregs[i], &sc->sc_fpregs[i]); |
d8714436 | 3183 | } |
1d8b512b RV |
3184 | __put_user(regs->fpscr, &sc->sc_fpscr); |
3185 | __put_user(regs->fpul, &sc->sc_fpul); | |
c3b5bc8a TS |
3186 | |
3187 | /* non-iBCS2 extensions.. */ | |
1d8b512b | 3188 | __put_user(mask, &sc->oldmask); |
c3b5bc8a TS |
3189 | } |
3190 | ||
016d2e1d | 3191 | static void restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc, |
d8714436 | 3192 | target_ulong *r0_p) |
c3b5bc8a | 3193 | { |
d8714436 | 3194 | int i; |
c3b5bc8a | 3195 | |
1d8b512b | 3196 | #define COPY(x) __get_user(regs->x, &sc->sc_##x) |
c3b5bc8a TS |
3197 | COPY(gregs[1]); |
3198 | COPY(gregs[2]); COPY(gregs[3]); | |
3199 | COPY(gregs[4]); COPY(gregs[5]); | |
3200 | COPY(gregs[6]); COPY(gregs[7]); | |
3201 | COPY(gregs[8]); COPY(gregs[9]); | |
3202 | COPY(gregs[10]); COPY(gregs[11]); | |
3203 | COPY(gregs[12]); COPY(gregs[13]); | |
3204 | COPY(gregs[14]); COPY(gregs[15]); | |
3205 | COPY(gbr); COPY(mach); | |
3206 | COPY(macl); COPY(pr); | |
3207 | COPY(sr); COPY(pc); | |
3208 | #undef COPY | |
3209 | ||
d8714436 | 3210 | for (i=0; i<16; i++) { |
1d8b512b | 3211 | __get_user(regs->fregs[i], &sc->sc_fpregs[i]); |
d8714436 | 3212 | } |
1d8b512b RV |
3213 | __get_user(regs->fpscr, &sc->sc_fpscr); |
3214 | __get_user(regs->fpul, &sc->sc_fpul); | |
c3b5bc8a TS |
3215 | |
3216 | regs->tra = -1; /* disable syscall checks */ | |
1d8b512b | 3217 | __get_user(*r0_p, &sc->sc_gregs[0]); |
c3b5bc8a TS |
3218 | } |
3219 | ||
624f7979 | 3220 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 3221 | target_sigset_t *set, CPUSH4State *regs) |
c3b5bc8a TS |
3222 | { |
3223 | struct target_sigframe *frame; | |
3224 | abi_ulong frame_addr; | |
3225 | int i; | |
3226 | int err = 0; | |
3227 | int signal; | |
3228 | ||
3229 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
3230 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3231 | goto give_sigsegv; | |
3232 | ||
3233 | signal = current_exec_domain_sig(sig); | |
3234 | ||
41ecc72b | 3235 | setup_sigcontext(&frame->sc, regs, set->sig[0]); |
c3b5bc8a TS |
3236 | |
3237 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
1d8b512b | 3238 | __put_user(set->sig[i + 1], &frame->extramask[i]); |
c3b5bc8a TS |
3239 | } |
3240 | ||
3241 | /* Set up to return from userspace. If provided, use a stub | |
3242 | already in userspace. */ | |
624f7979 PB |
3243 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
3244 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
3245 | } else { |
3246 | /* Generate return code (system call to sigreturn) */ | |
1d8b512b RV |
3247 | __put_user(MOVW(2), &frame->retcode[0]); |
3248 | __put_user(TRAP_NOARG, &frame->retcode[1]); | |
3249 | __put_user((TARGET_NR_sigreturn), &frame->retcode[2]); | |
c3b5bc8a TS |
3250 | regs->pr = (unsigned long) frame->retcode; |
3251 | } | |
3252 | ||
3253 | if (err) | |
3254 | goto give_sigsegv; | |
3255 | ||
3256 | /* Set up registers for signal handler */ | |
cb9c6268 | 3257 | regs->gregs[15] = frame_addr; |
c3b5bc8a TS |
3258 | regs->gregs[4] = signal; /* Arg for signal handler */ |
3259 | regs->gregs[5] = 0; | |
cb9c6268 | 3260 | regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc); |
624f7979 | 3261 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
3262 | |
3263 | unlock_user_struct(frame, frame_addr, 1); | |
3264 | return; | |
3265 | ||
3266 | give_sigsegv: | |
3267 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 3268 | force_sig(TARGET_SIGSEGV); |
c3b5bc8a TS |
3269 | } |
3270 | ||
624f7979 | 3271 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3272 | target_siginfo_t *info, |
05390248 | 3273 | target_sigset_t *set, CPUSH4State *regs) |
c3b5bc8a TS |
3274 | { |
3275 | struct target_rt_sigframe *frame; | |
3276 | abi_ulong frame_addr; | |
3277 | int i; | |
3278 | int err = 0; | |
3279 | int signal; | |
3280 | ||
3281 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
3282 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3283 | goto give_sigsegv; | |
3284 | ||
3285 | signal = current_exec_domain_sig(sig); | |
3286 | ||
b0fd8d18 | 3287 | copy_siginfo_to_user(&frame->info, info); |
c3b5bc8a TS |
3288 | |
3289 | /* Create the ucontext. */ | |
1d8b512b RV |
3290 | __put_user(0, &frame->uc.tuc_flags); |
3291 | __put_user(0, (unsigned long *)&frame->uc.tuc_link); | |
3292 | __put_user((unsigned long)target_sigaltstack_used.ss_sp, | |
3293 | &frame->uc.tuc_stack.ss_sp); | |
3294 | __put_user(sas_ss_flags(regs->gregs[15]), | |
3295 | &frame->uc.tuc_stack.ss_flags); | |
3296 | __put_user(target_sigaltstack_used.ss_size, | |
3297 | &frame->uc.tuc_stack.ss_size); | |
3298 | setup_sigcontext(&frame->uc.tuc_mcontext, | |
c3b5bc8a TS |
3299 | regs, set->sig[0]); |
3300 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
1d8b512b | 3301 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
c3b5bc8a TS |
3302 | } |
3303 | ||
3304 | /* Set up to return from userspace. If provided, use a stub | |
3305 | already in userspace. */ | |
624f7979 PB |
3306 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
3307 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
3308 | } else { |
3309 | /* Generate return code (system call to sigreturn) */ | |
1d8b512b RV |
3310 | __put_user(MOVW(2), &frame->retcode[0]); |
3311 | __put_user(TRAP_NOARG, &frame->retcode[1]); | |
3312 | __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]); | |
c3b5bc8a TS |
3313 | regs->pr = (unsigned long) frame->retcode; |
3314 | } | |
3315 | ||
3316 | if (err) | |
3317 | goto give_sigsegv; | |
3318 | ||
3319 | /* Set up registers for signal handler */ | |
cb9c6268 | 3320 | regs->gregs[15] = frame_addr; |
c3b5bc8a | 3321 | regs->gregs[4] = signal; /* Arg for signal handler */ |
cb9c6268 EI |
3322 | regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info); |
3323 | regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc); | |
624f7979 | 3324 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
3325 | |
3326 | unlock_user_struct(frame, frame_addr, 1); | |
3327 | return; | |
3328 | ||
3329 | give_sigsegv: | |
3330 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 3331 | force_sig(TARGET_SIGSEGV); |
c3b5bc8a TS |
3332 | } |
3333 | ||
05390248 | 3334 | long do_sigreturn(CPUSH4State *regs) |
c3b5bc8a TS |
3335 | { |
3336 | struct target_sigframe *frame; | |
3337 | abi_ulong frame_addr; | |
3338 | sigset_t blocked; | |
c227f099 | 3339 | target_sigset_t target_set; |
d8714436 | 3340 | target_ulong r0; |
c3b5bc8a TS |
3341 | int i; |
3342 | int err = 0; | |
3343 | ||
3344 | #if defined(DEBUG_SIGNAL) | |
3345 | fprintf(stderr, "do_sigreturn\n"); | |
3346 | #endif | |
3347 | frame_addr = regs->gregs[15]; | |
3348 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
3349 | goto badframe; | |
3350 | ||
1d8b512b | 3351 | __get_user(target_set.sig[0], &frame->sc.oldmask); |
c3b5bc8a | 3352 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1d8b512b | 3353 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
c3b5bc8a TS |
3354 | } |
3355 | ||
3356 | if (err) | |
3357 | goto badframe; | |
3358 | ||
3359 | target_to_host_sigset_internal(&blocked, &target_set); | |
1c275925 | 3360 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
c3b5bc8a | 3361 | |
016d2e1d | 3362 | restore_sigcontext(regs, &frame->sc, &r0); |
c3b5bc8a TS |
3363 | |
3364 | unlock_user_struct(frame, frame_addr, 0); | |
d8714436 | 3365 | return r0; |
c3b5bc8a TS |
3366 | |
3367 | badframe: | |
3368 | unlock_user_struct(frame, frame_addr, 0); | |
3369 | force_sig(TARGET_SIGSEGV); | |
3370 | return 0; | |
3371 | } | |
3372 | ||
05390248 | 3373 | long do_rt_sigreturn(CPUSH4State *regs) |
c3b5bc8a TS |
3374 | { |
3375 | struct target_rt_sigframe *frame; | |
3376 | abi_ulong frame_addr; | |
3377 | sigset_t blocked; | |
d8714436 | 3378 | target_ulong r0; |
c3b5bc8a TS |
3379 | |
3380 | #if defined(DEBUG_SIGNAL) | |
3381 | fprintf(stderr, "do_rt_sigreturn\n"); | |
3382 | #endif | |
3383 | frame_addr = regs->gregs[15]; | |
3384 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
3385 | goto badframe; | |
3386 | ||
60e99246 | 3387 | target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask); |
1c275925 | 3388 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
c3b5bc8a | 3389 | |
016d2e1d | 3390 | restore_sigcontext(regs, &frame->uc.tuc_mcontext, &r0); |
c3b5bc8a TS |
3391 | |
3392 | if (do_sigaltstack(frame_addr + | |
60e99246 | 3393 | offsetof(struct target_rt_sigframe, uc.tuc_stack), |
c3b5bc8a TS |
3394 | 0, get_sp_from_cpustate(regs)) == -EFAULT) |
3395 | goto badframe; | |
3396 | ||
3397 | unlock_user_struct(frame, frame_addr, 0); | |
d8714436 | 3398 | return r0; |
c3b5bc8a TS |
3399 | |
3400 | badframe: | |
3401 | unlock_user_struct(frame, frame_addr, 0); | |
3402 | force_sig(TARGET_SIGSEGV); | |
3403 | return 0; | |
3404 | } | |
b779e29e EI |
3405 | #elif defined(TARGET_MICROBLAZE) |
3406 | ||
3407 | struct target_sigcontext { | |
3408 | struct target_pt_regs regs; /* needs to be first */ | |
3409 | uint32_t oldmask; | |
3410 | }; | |
3411 | ||
b2178704 EI |
3412 | struct target_stack_t { |
3413 | abi_ulong ss_sp; | |
3414 | int ss_flags; | |
3415 | unsigned int ss_size; | |
3416 | }; | |
3417 | ||
3418 | struct target_ucontext { | |
f711df67 RH |
3419 | abi_ulong tuc_flags; |
3420 | abi_ulong tuc_link; | |
3421 | struct target_stack_t tuc_stack; | |
3422 | struct target_sigcontext tuc_mcontext; | |
3423 | uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1]; | |
b2178704 EI |
3424 | }; |
3425 | ||
b779e29e EI |
3426 | /* Signal frames. */ |
3427 | struct target_signal_frame { | |
b2178704 | 3428 | struct target_ucontext uc; |
b779e29e EI |
3429 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; |
3430 | uint32_t tramp[2]; | |
3431 | }; | |
3432 | ||
3433 | struct rt_signal_frame { | |
02d2bd5d | 3434 | siginfo_t info; |
b779e29e EI |
3435 | struct ucontext uc; |
3436 | uint32_t tramp[2]; | |
3437 | }; | |
3438 | ||
05390248 | 3439 | static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env) |
b779e29e EI |
3440 | { |
3441 | __put_user(env->regs[0], &sc->regs.r0); | |
3442 | __put_user(env->regs[1], &sc->regs.r1); | |
3443 | __put_user(env->regs[2], &sc->regs.r2); | |
3444 | __put_user(env->regs[3], &sc->regs.r3); | |
3445 | __put_user(env->regs[4], &sc->regs.r4); | |
3446 | __put_user(env->regs[5], &sc->regs.r5); | |
3447 | __put_user(env->regs[6], &sc->regs.r6); | |
3448 | __put_user(env->regs[7], &sc->regs.r7); | |
3449 | __put_user(env->regs[8], &sc->regs.r8); | |
3450 | __put_user(env->regs[9], &sc->regs.r9); | |
3451 | __put_user(env->regs[10], &sc->regs.r10); | |
3452 | __put_user(env->regs[11], &sc->regs.r11); | |
3453 | __put_user(env->regs[12], &sc->regs.r12); | |
3454 | __put_user(env->regs[13], &sc->regs.r13); | |
3455 | __put_user(env->regs[14], &sc->regs.r14); | |
3456 | __put_user(env->regs[15], &sc->regs.r15); | |
3457 | __put_user(env->regs[16], &sc->regs.r16); | |
3458 | __put_user(env->regs[17], &sc->regs.r17); | |
3459 | __put_user(env->regs[18], &sc->regs.r18); | |
3460 | __put_user(env->regs[19], &sc->regs.r19); | |
3461 | __put_user(env->regs[20], &sc->regs.r20); | |
3462 | __put_user(env->regs[21], &sc->regs.r21); | |
3463 | __put_user(env->regs[22], &sc->regs.r22); | |
3464 | __put_user(env->regs[23], &sc->regs.r23); | |
3465 | __put_user(env->regs[24], &sc->regs.r24); | |
3466 | __put_user(env->regs[25], &sc->regs.r25); | |
3467 | __put_user(env->regs[26], &sc->regs.r26); | |
3468 | __put_user(env->regs[27], &sc->regs.r27); | |
3469 | __put_user(env->regs[28], &sc->regs.r28); | |
3470 | __put_user(env->regs[29], &sc->regs.r29); | |
3471 | __put_user(env->regs[30], &sc->regs.r30); | |
3472 | __put_user(env->regs[31], &sc->regs.r31); | |
3473 | __put_user(env->sregs[SR_PC], &sc->regs.pc); | |
3474 | } | |
3475 | ||
05390248 | 3476 | static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env) |
b779e29e EI |
3477 | { |
3478 | __get_user(env->regs[0], &sc->regs.r0); | |
3479 | __get_user(env->regs[1], &sc->regs.r1); | |
3480 | __get_user(env->regs[2], &sc->regs.r2); | |
3481 | __get_user(env->regs[3], &sc->regs.r3); | |
3482 | __get_user(env->regs[4], &sc->regs.r4); | |
3483 | __get_user(env->regs[5], &sc->regs.r5); | |
3484 | __get_user(env->regs[6], &sc->regs.r6); | |
3485 | __get_user(env->regs[7], &sc->regs.r7); | |
3486 | __get_user(env->regs[8], &sc->regs.r8); | |
3487 | __get_user(env->regs[9], &sc->regs.r9); | |
3488 | __get_user(env->regs[10], &sc->regs.r10); | |
3489 | __get_user(env->regs[11], &sc->regs.r11); | |
3490 | __get_user(env->regs[12], &sc->regs.r12); | |
3491 | __get_user(env->regs[13], &sc->regs.r13); | |
3492 | __get_user(env->regs[14], &sc->regs.r14); | |
3493 | __get_user(env->regs[15], &sc->regs.r15); | |
3494 | __get_user(env->regs[16], &sc->regs.r16); | |
3495 | __get_user(env->regs[17], &sc->regs.r17); | |
3496 | __get_user(env->regs[18], &sc->regs.r18); | |
3497 | __get_user(env->regs[19], &sc->regs.r19); | |
3498 | __get_user(env->regs[20], &sc->regs.r20); | |
3499 | __get_user(env->regs[21], &sc->regs.r21); | |
3500 | __get_user(env->regs[22], &sc->regs.r22); | |
3501 | __get_user(env->regs[23], &sc->regs.r23); | |
3502 | __get_user(env->regs[24], &sc->regs.r24); | |
3503 | __get_user(env->regs[25], &sc->regs.r25); | |
3504 | __get_user(env->regs[26], &sc->regs.r26); | |
3505 | __get_user(env->regs[27], &sc->regs.r27); | |
3506 | __get_user(env->regs[28], &sc->regs.r28); | |
3507 | __get_user(env->regs[29], &sc->regs.r29); | |
3508 | __get_user(env->regs[30], &sc->regs.r30); | |
3509 | __get_user(env->regs[31], &sc->regs.r31); | |
3510 | __get_user(env->sregs[SR_PC], &sc->regs.pc); | |
3511 | } | |
3512 | ||
3513 | static abi_ulong get_sigframe(struct target_sigaction *ka, | |
05390248 | 3514 | CPUMBState *env, int frame_size) |
b779e29e EI |
3515 | { |
3516 | abi_ulong sp = env->regs[1]; | |
3517 | ||
3518 | if ((ka->sa_flags & SA_ONSTACK) != 0 && !on_sig_stack(sp)) | |
3519 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
3520 | ||
3521 | return ((sp - frame_size) & -8UL); | |
3522 | } | |
3523 | ||
3524 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 3525 | target_sigset_t *set, CPUMBState *env) |
b779e29e EI |
3526 | { |
3527 | struct target_signal_frame *frame; | |
3528 | abi_ulong frame_addr; | |
b779e29e EI |
3529 | int i; |
3530 | ||
3531 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
3532 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3533 | goto badframe; | |
3534 | ||
3535 | /* Save the mask. */ | |
1d8b512b | 3536 | __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask); |
b779e29e EI |
3537 | |
3538 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
0188fadb | 3539 | __put_user(set->sig[i], &frame->extramask[i - 1]); |
b779e29e EI |
3540 | } |
3541 | ||
f711df67 | 3542 | setup_sigcontext(&frame->uc.tuc_mcontext, env); |
b779e29e EI |
3543 | |
3544 | /* Set up to return from userspace. If provided, use a stub | |
3545 | already in userspace. */ | |
3546 | /* minus 8 is offset to cater for "rtsd r15,8" offset */ | |
3547 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
3548 | env->regs[15] = ((unsigned long)ka->sa_restorer)-8; | |
3549 | } else { | |
3550 | uint32_t t; | |
3551 | /* Note, these encodings are _big endian_! */ | |
3552 | /* addi r12, r0, __NR_sigreturn */ | |
3553 | t = 0x31800000UL | TARGET_NR_sigreturn; | |
1d8b512b | 3554 | __put_user(t, frame->tramp + 0); |
b779e29e EI |
3555 | /* brki r14, 0x8 */ |
3556 | t = 0xb9cc0008UL; | |
1d8b512b | 3557 | __put_user(t, frame->tramp + 1); |
b779e29e EI |
3558 | |
3559 | /* Return from sighandler will jump to the tramp. | |
3560 | Negative 8 offset because return is rtsd r15, 8 */ | |
3561 | env->regs[15] = ((unsigned long)frame->tramp) - 8; | |
3562 | } | |
3563 | ||
b779e29e | 3564 | /* Set up registers for signal handler */ |
cb9c6268 | 3565 | env->regs[1] = frame_addr; |
b779e29e EI |
3566 | /* Signal handler args: */ |
3567 | env->regs[5] = sig; /* Arg 0: signum */ | |
187b4e08 | 3568 | env->regs[6] = 0; |
cb9c6268 EI |
3569 | /* arg 1: sigcontext */ |
3570 | env->regs[7] = frame_addr += offsetof(typeof(*frame), uc); | |
b779e29e EI |
3571 | |
3572 | /* Offset of 4 to handle microblaze rtid r14, 0 */ | |
3573 | env->sregs[SR_PC] = (unsigned long)ka->_sa_handler; | |
3574 | ||
3575 | unlock_user_struct(frame, frame_addr, 1); | |
3576 | return; | |
3577 | badframe: | |
b779e29e EI |
3578 | force_sig(TARGET_SIGSEGV); |
3579 | } | |
3580 | ||
3581 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 3582 | target_siginfo_t *info, |
05390248 | 3583 | target_sigset_t *set, CPUMBState *env) |
b779e29e EI |
3584 | { |
3585 | fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n"); | |
3586 | } | |
3587 | ||
05390248 | 3588 | long do_sigreturn(CPUMBState *env) |
b779e29e EI |
3589 | { |
3590 | struct target_signal_frame *frame; | |
3591 | abi_ulong frame_addr; | |
c227f099 | 3592 | target_sigset_t target_set; |
b779e29e EI |
3593 | sigset_t set; |
3594 | int i; | |
3595 | ||
3596 | frame_addr = env->regs[R_SP]; | |
3597 | /* Make sure the guest isn't playing games. */ | |
3598 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) | |
3599 | goto badframe; | |
3600 | ||
3601 | /* Restore blocked signals */ | |
f5f601af | 3602 | __get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask); |
b779e29e | 3603 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
f5f601af | 3604 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
b779e29e EI |
3605 | } |
3606 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 3607 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
b779e29e | 3608 | |
f711df67 | 3609 | restore_sigcontext(&frame->uc.tuc_mcontext, env); |
b779e29e EI |
3610 | /* We got here through a sigreturn syscall, our path back is via an |
3611 | rtb insn so setup r14 for that. */ | |
3612 | env->regs[14] = env->sregs[SR_PC]; | |
3613 | ||
3614 | unlock_user_struct(frame, frame_addr, 0); | |
3615 | return env->regs[10]; | |
3616 | badframe: | |
b779e29e EI |
3617 | force_sig(TARGET_SIGSEGV); |
3618 | } | |
3619 | ||
05390248 | 3620 | long do_rt_sigreturn(CPUMBState *env) |
b779e29e EI |
3621 | { |
3622 | fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n"); | |
3623 | return -TARGET_ENOSYS; | |
3624 | } | |
3625 | ||
b6d3abda EI |
3626 | #elif defined(TARGET_CRIS) |
3627 | ||
3628 | struct target_sigcontext { | |
3629 | struct target_pt_regs regs; /* needs to be first */ | |
3630 | uint32_t oldmask; | |
3631 | uint32_t usp; /* usp before stacking this gunk on it */ | |
3632 | }; | |
3633 | ||
3634 | /* Signal frames. */ | |
3635 | struct target_signal_frame { | |
3636 | struct target_sigcontext sc; | |
3637 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; | |
8cfc114a | 3638 | uint16_t retcode[4]; /* Trampoline code. */ |
b6d3abda EI |
3639 | }; |
3640 | ||
3641 | struct rt_signal_frame { | |
02d2bd5d | 3642 | siginfo_t *pinfo; |
b6d3abda | 3643 | void *puc; |
02d2bd5d | 3644 | siginfo_t info; |
b6d3abda | 3645 | struct ucontext uc; |
8cfc114a | 3646 | uint16_t retcode[4]; /* Trampoline code. */ |
b6d3abda EI |
3647 | }; |
3648 | ||
05390248 | 3649 | static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) |
b6d3abda | 3650 | { |
9664d928 EI |
3651 | __put_user(env->regs[0], &sc->regs.r0); |
3652 | __put_user(env->regs[1], &sc->regs.r1); | |
3653 | __put_user(env->regs[2], &sc->regs.r2); | |
3654 | __put_user(env->regs[3], &sc->regs.r3); | |
3655 | __put_user(env->regs[4], &sc->regs.r4); | |
3656 | __put_user(env->regs[5], &sc->regs.r5); | |
3657 | __put_user(env->regs[6], &sc->regs.r6); | |
3658 | __put_user(env->regs[7], &sc->regs.r7); | |
3659 | __put_user(env->regs[8], &sc->regs.r8); | |
3660 | __put_user(env->regs[9], &sc->regs.r9); | |
3661 | __put_user(env->regs[10], &sc->regs.r10); | |
3662 | __put_user(env->regs[11], &sc->regs.r11); | |
3663 | __put_user(env->regs[12], &sc->regs.r12); | |
3664 | __put_user(env->regs[13], &sc->regs.r13); | |
3665 | __put_user(env->regs[14], &sc->usp); | |
3666 | __put_user(env->regs[15], &sc->regs.acr); | |
3667 | __put_user(env->pregs[PR_MOF], &sc->regs.mof); | |
3668 | __put_user(env->pregs[PR_SRP], &sc->regs.srp); | |
3669 | __put_user(env->pc, &sc->regs.erp); | |
b6d3abda | 3670 | } |
9664d928 | 3671 | |
05390248 | 3672 | static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) |
b6d3abda | 3673 | { |
9664d928 EI |
3674 | __get_user(env->regs[0], &sc->regs.r0); |
3675 | __get_user(env->regs[1], &sc->regs.r1); | |
3676 | __get_user(env->regs[2], &sc->regs.r2); | |
3677 | __get_user(env->regs[3], &sc->regs.r3); | |
3678 | __get_user(env->regs[4], &sc->regs.r4); | |
3679 | __get_user(env->regs[5], &sc->regs.r5); | |
3680 | __get_user(env->regs[6], &sc->regs.r6); | |
3681 | __get_user(env->regs[7], &sc->regs.r7); | |
3682 | __get_user(env->regs[8], &sc->regs.r8); | |
3683 | __get_user(env->regs[9], &sc->regs.r9); | |
3684 | __get_user(env->regs[10], &sc->regs.r10); | |
3685 | __get_user(env->regs[11], &sc->regs.r11); | |
3686 | __get_user(env->regs[12], &sc->regs.r12); | |
3687 | __get_user(env->regs[13], &sc->regs.r13); | |
3688 | __get_user(env->regs[14], &sc->usp); | |
3689 | __get_user(env->regs[15], &sc->regs.acr); | |
3690 | __get_user(env->pregs[PR_MOF], &sc->regs.mof); | |
3691 | __get_user(env->pregs[PR_SRP], &sc->regs.srp); | |
3692 | __get_user(env->pc, &sc->regs.erp); | |
3693 | } | |
3694 | ||
05390248 | 3695 | static abi_ulong get_sigframe(CPUCRISState *env, int framesize) |
9664d928 EI |
3696 | { |
3697 | abi_ulong sp; | |
b6d3abda | 3698 | /* Align the stack downwards to 4. */ |
9664d928 EI |
3699 | sp = (env->regs[R_SP] & ~3); |
3700 | return sp - framesize; | |
b6d3abda EI |
3701 | } |
3702 | ||
624f7979 | 3703 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 3704 | target_sigset_t *set, CPUCRISState *env) |
b6d3abda EI |
3705 | { |
3706 | struct target_signal_frame *frame; | |
9664d928 | 3707 | abi_ulong frame_addr; |
b6d3abda | 3708 | int i; |
b6d3abda | 3709 | |
9664d928 EI |
3710 | frame_addr = get_sigframe(env, sizeof *frame); |
3711 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
b6d3abda EI |
3712 | goto badframe; |
3713 | ||
3714 | /* | |
3715 | * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't | |
3716 | * use this trampoline anymore but it sets it up for GDB. | |
3717 | * In QEMU, using the trampoline simplifies things a bit so we use it. | |
3718 | * | |
3719 | * This is movu.w __NR_sigreturn, r9; break 13; | |
3720 | */ | |
1d8b512b RV |
3721 | __put_user(0x9c5f, frame->retcode+0); |
3722 | __put_user(TARGET_NR_sigreturn, | |
3723 | frame->retcode + 1); | |
3724 | __put_user(0xe93d, frame->retcode + 2); | |
b6d3abda EI |
3725 | |
3726 | /* Save the mask. */ | |
1d8b512b | 3727 | __put_user(set->sig[0], &frame->sc.oldmask); |
b6d3abda | 3728 | |
0188fadb RV |
3729 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
3730 | __put_user(set->sig[i], &frame->extramask[i - 1]); | |
3731 | } | |
b6d3abda EI |
3732 | |
3733 | setup_sigcontext(&frame->sc, env); | |
3734 | ||
3735 | /* Move the stack and setup the arguments for the handler. */ | |
cb9c6268 | 3736 | env->regs[R_SP] = frame_addr; |
b6d3abda | 3737 | env->regs[10] = sig; |
624f7979 | 3738 | env->pc = (unsigned long) ka->_sa_handler; |
b6d3abda | 3739 | /* Link SRP so the guest returns through the trampoline. */ |
cb9c6268 | 3740 | env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode); |
b6d3abda | 3741 | |
9664d928 | 3742 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
3743 | return; |
3744 | badframe: | |
b6d3abda EI |
3745 | force_sig(TARGET_SIGSEGV); |
3746 | } | |
3747 | ||
624f7979 | 3748 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3749 | target_siginfo_t *info, |
05390248 | 3750 | target_sigset_t *set, CPUCRISState *env) |
b6d3abda EI |
3751 | { |
3752 | fprintf(stderr, "CRIS setup_rt_frame: not implemented\n"); | |
3753 | } | |
3754 | ||
05390248 | 3755 | long do_sigreturn(CPUCRISState *env) |
b6d3abda EI |
3756 | { |
3757 | struct target_signal_frame *frame; | |
9664d928 | 3758 | abi_ulong frame_addr; |
c227f099 | 3759 | target_sigset_t target_set; |
b6d3abda EI |
3760 | sigset_t set; |
3761 | int i; | |
3762 | ||
9664d928 | 3763 | frame_addr = env->regs[R_SP]; |
b6d3abda | 3764 | /* Make sure the guest isn't playing games. */ |
9664d928 | 3765 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
b6d3abda EI |
3766 | goto badframe; |
3767 | ||
3768 | /* Restore blocked signals */ | |
f5f601af | 3769 | __get_user(target_set.sig[0], &frame->sc.oldmask); |
b6d3abda | 3770 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
f5f601af | 3771 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
b6d3abda EI |
3772 | } |
3773 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 3774 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
b6d3abda EI |
3775 | |
3776 | restore_sigcontext(&frame->sc, env); | |
9664d928 | 3777 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3778 | return env->regs[10]; |
3779 | badframe: | |
b6d3abda EI |
3780 | force_sig(TARGET_SIGSEGV); |
3781 | } | |
3782 | ||
05390248 | 3783 | long do_rt_sigreturn(CPUCRISState *env) |
b6d3abda EI |
3784 | { |
3785 | fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n"); | |
3786 | return -TARGET_ENOSYS; | |
3787 | } | |
c3b5bc8a | 3788 | |
d962783e JL |
3789 | #elif defined(TARGET_OPENRISC) |
3790 | ||
3791 | struct target_sigcontext { | |
3792 | struct target_pt_regs regs; | |
3793 | abi_ulong oldmask; | |
3794 | abi_ulong usp; | |
3795 | }; | |
3796 | ||
3797 | struct target_ucontext { | |
3798 | abi_ulong tuc_flags; | |
3799 | abi_ulong tuc_link; | |
3800 | target_stack_t tuc_stack; | |
3801 | struct target_sigcontext tuc_mcontext; | |
3802 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
3803 | }; | |
3804 | ||
3805 | struct target_rt_sigframe { | |
3806 | abi_ulong pinfo; | |
3807 | uint64_t puc; | |
3808 | struct target_siginfo info; | |
3809 | struct target_sigcontext sc; | |
3810 | struct target_ucontext uc; | |
3811 | unsigned char retcode[16]; /* trampoline code */ | |
3812 | }; | |
3813 | ||
3814 | /* This is the asm-generic/ucontext.h version */ | |
3815 | #if 0 | |
3816 | static int restore_sigcontext(CPUOpenRISCState *regs, | |
3817 | struct target_sigcontext *sc) | |
3818 | { | |
3819 | unsigned int err = 0; | |
3820 | unsigned long old_usp; | |
3821 | ||
3822 | /* Alwys make any pending restarted system call return -EINTR */ | |
3823 | current_thread_info()->restart_block.fn = do_no_restart_syscall; | |
3824 | ||
3825 | /* restore the regs from &sc->regs (same as sc, since regs is first) | |
3826 | * (sc is already checked for VERIFY_READ since the sigframe was | |
3827 | * checked in sys_sigreturn previously) | |
3828 | */ | |
3829 | ||
3830 | if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) { | |
3831 | goto badframe; | |
3832 | } | |
3833 | ||
3834 | /* make sure the U-flag is set so user-mode cannot fool us */ | |
3835 | ||
3836 | regs->sr &= ~SR_SM; | |
3837 | ||
3838 | /* restore the old USP as it was before we stacked the sc etc. | |
3839 | * (we cannot just pop the sigcontext since we aligned the sp and | |
3840 | * stuff after pushing it) | |
3841 | */ | |
3842 | ||
1d8b512b | 3843 | __get_user(old_usp, &sc->usp); |
d962783e JL |
3844 | phx_signal("old_usp 0x%lx", old_usp); |
3845 | ||
3846 | __PHX__ REALLY /* ??? */ | |
3847 | wrusp(old_usp); | |
3848 | regs->gpr[1] = old_usp; | |
3849 | ||
3850 | /* TODO: the other ports use regs->orig_XX to disable syscall checks | |
3851 | * after this completes, but we don't use that mechanism. maybe we can | |
3852 | * use it now ? | |
3853 | */ | |
3854 | ||
3855 | return err; | |
3856 | ||
3857 | badframe: | |
3858 | return 1; | |
3859 | } | |
3860 | #endif | |
3861 | ||
3862 | /* Set up a signal frame. */ | |
3863 | ||
41ecc72b | 3864 | static void setup_sigcontext(struct target_sigcontext *sc, |
d962783e JL |
3865 | CPUOpenRISCState *regs, |
3866 | unsigned long mask) | |
3867 | { | |
d962783e JL |
3868 | unsigned long usp = regs->gpr[1]; |
3869 | ||
3870 | /* copy the regs. they are first in sc so we can use sc directly */ | |
3871 | ||
1d8b512b | 3872 | /*copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/ |
d962783e JL |
3873 | |
3874 | /* Set the frametype to CRIS_FRAME_NORMAL for the execution of | |
3875 | the signal handler. The frametype will be restored to its previous | |
3876 | value in restore_sigcontext. */ | |
3877 | /*regs->frametype = CRIS_FRAME_NORMAL;*/ | |
3878 | ||
3879 | /* then some other stuff */ | |
1d8b512b | 3880 | __put_user(mask, &sc->oldmask); |
41ecc72b | 3881 | __put_user(usp, &sc->usp); |
d962783e JL |
3882 | } |
3883 | ||
3884 | static inline unsigned long align_sigframe(unsigned long sp) | |
3885 | { | |
3886 | unsigned long i; | |
3887 | i = sp & ~3UL; | |
3888 | return i; | |
3889 | } | |
3890 | ||
3891 | static inline abi_ulong get_sigframe(struct target_sigaction *ka, | |
3892 | CPUOpenRISCState *regs, | |
3893 | size_t frame_size) | |
3894 | { | |
3895 | unsigned long sp = regs->gpr[1]; | |
3896 | int onsigstack = on_sig_stack(sp); | |
3897 | ||
3898 | /* redzone */ | |
3899 | /* This is the X/Open sanctioned signal stack switching. */ | |
3900 | if ((ka->sa_flags & SA_ONSTACK) != 0 && !onsigstack) { | |
3901 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
3902 | } | |
3903 | ||
3904 | sp = align_sigframe(sp - frame_size); | |
3905 | ||
3906 | /* | |
3907 | * If we are on the alternate signal stack and would overflow it, don't. | |
3908 | * Return an always-bogus address instead so we will die with SIGSEGV. | |
3909 | */ | |
3910 | ||
3911 | if (onsigstack && !likely(on_sig_stack(sp))) { | |
3912 | return -1L; | |
3913 | } | |
3914 | ||
3915 | return sp; | |
3916 | } | |
3917 | ||
3918 | static void setup_frame(int sig, struct target_sigaction *ka, | |
3919 | target_sigset_t *set, CPUOpenRISCState *env) | |
3920 | { | |
3921 | qemu_log("Not implement.\n"); | |
3922 | } | |
3923 | ||
3924 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
3925 | target_siginfo_t *info, | |
3926 | target_sigset_t *set, CPUOpenRISCState *env) | |
3927 | { | |
3928 | int err = 0; | |
3929 | abi_ulong frame_addr; | |
3930 | unsigned long return_ip; | |
3931 | struct target_rt_sigframe *frame; | |
3932 | abi_ulong info_addr, uc_addr; | |
3933 | ||
d962783e JL |
3934 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
3935 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
3936 | goto give_sigsegv; | |
3937 | } | |
3938 | ||
3939 | info_addr = frame_addr + offsetof(struct target_rt_sigframe, info); | |
1d8b512b | 3940 | __put_user(info_addr, &frame->pinfo); |
d962783e | 3941 | uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc); |
1d8b512b | 3942 | __put_user(uc_addr, &frame->puc); |
d962783e JL |
3943 | |
3944 | if (ka->sa_flags & SA_SIGINFO) { | |
b0fd8d18 | 3945 | copy_siginfo_to_user(&frame->info, info); |
d962783e JL |
3946 | } |
3947 | ||
3948 | /*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/ | |
1d8b512b RV |
3949 | __put_user(0, &frame->uc.tuc_flags); |
3950 | __put_user(0, &frame->uc.tuc_link); | |
3951 | __put_user(target_sigaltstack_used.ss_sp, | |
3952 | &frame->uc.tuc_stack.ss_sp); | |
3953 | __put_user(sas_ss_flags(env->gpr[1]), &frame->uc.tuc_stack.ss_flags); | |
3954 | __put_user(target_sigaltstack_used.ss_size, | |
3955 | &frame->uc.tuc_stack.ss_size); | |
41ecc72b | 3956 | setup_sigcontext(&frame->sc, env, set->sig[0]); |
d962783e JL |
3957 | |
3958 | /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/ | |
3959 | ||
d962783e JL |
3960 | /* trampoline - the desired return ip is the retcode itself */ |
3961 | return_ip = (unsigned long)&frame->retcode; | |
3962 | /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */ | |
1d8b512b RV |
3963 | __put_user(0xa960, (short *)(frame->retcode + 0)); |
3964 | __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2)); | |
3965 | __put_user(0x20000001, (unsigned long *)(frame->retcode + 4)); | |
3966 | __put_user(0x15000000, (unsigned long *)(frame->retcode + 8)); | |
d962783e JL |
3967 | |
3968 | if (err) { | |
3969 | goto give_sigsegv; | |
3970 | } | |
3971 | ||
3972 | /* TODO what is the current->exec_domain stuff and invmap ? */ | |
3973 | ||
3974 | /* Set up registers for signal handler */ | |
3975 | env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */ | |
3976 | env->gpr[9] = (unsigned long)return_ip; /* what we enter LATER */ | |
3977 | env->gpr[3] = (unsigned long)sig; /* arg 1: signo */ | |
3978 | env->gpr[4] = (unsigned long)&frame->info; /* arg 2: (siginfo_t*) */ | |
3979 | env->gpr[5] = (unsigned long)&frame->uc; /* arg 3: ucontext */ | |
3980 | ||
3981 | /* actually move the usp to reflect the stacked frame */ | |
3982 | env->gpr[1] = (unsigned long)frame; | |
3983 | ||
3984 | return; | |
3985 | ||
3986 | give_sigsegv: | |
3987 | unlock_user_struct(frame, frame_addr, 1); | |
3988 | if (sig == TARGET_SIGSEGV) { | |
3989 | ka->_sa_handler = TARGET_SIG_DFL; | |
3990 | } | |
3991 | force_sig(TARGET_SIGSEGV); | |
3992 | } | |
3993 | ||
3994 | long do_sigreturn(CPUOpenRISCState *env) | |
3995 | { | |
3996 | ||
3997 | qemu_log("do_sigreturn: not implemented\n"); | |
3998 | return -TARGET_ENOSYS; | |
3999 | } | |
4000 | ||
4001 | long do_rt_sigreturn(CPUOpenRISCState *env) | |
4002 | { | |
4003 | qemu_log("do_rt_sigreturn: not implemented\n"); | |
4004 | return -TARGET_ENOSYS; | |
4005 | } | |
4006 | /* TARGET_OPENRISC */ | |
4007 | ||
a4c075f1 UH |
4008 | #elif defined(TARGET_S390X) |
4009 | ||
4010 | #define __NUM_GPRS 16 | |
4011 | #define __NUM_FPRS 16 | |
4012 | #define __NUM_ACRS 16 | |
4013 | ||
4014 | #define S390_SYSCALL_SIZE 2 | |
4015 | #define __SIGNAL_FRAMESIZE 160 /* FIXME: 31-bit mode -> 96 */ | |
4016 | ||
4017 | #define _SIGCONTEXT_NSIG 64 | |
4018 | #define _SIGCONTEXT_NSIG_BPW 64 /* FIXME: 31-bit mode -> 32 */ | |
4019 | #define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW) | |
4020 | #define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS) | |
4021 | #define PSW_ADDR_AMODE 0x0000000000000000UL /* 0x80000000UL for 31-bit */ | |
4022 | #define S390_SYSCALL_OPCODE ((uint16_t)0x0a00) | |
4023 | ||
4024 | typedef struct { | |
4025 | target_psw_t psw; | |
4026 | target_ulong gprs[__NUM_GPRS]; | |
4027 | unsigned int acrs[__NUM_ACRS]; | |
4028 | } target_s390_regs_common; | |
4029 | ||
4030 | typedef struct { | |
4031 | unsigned int fpc; | |
4032 | double fprs[__NUM_FPRS]; | |
4033 | } target_s390_fp_regs; | |
4034 | ||
4035 | typedef struct { | |
4036 | target_s390_regs_common regs; | |
4037 | target_s390_fp_regs fpregs; | |
4038 | } target_sigregs; | |
4039 | ||
4040 | struct target_sigcontext { | |
4041 | target_ulong oldmask[_SIGCONTEXT_NSIG_WORDS]; | |
4042 | target_sigregs *sregs; | |
4043 | }; | |
4044 | ||
4045 | typedef struct { | |
4046 | uint8_t callee_used_stack[__SIGNAL_FRAMESIZE]; | |
4047 | struct target_sigcontext sc; | |
4048 | target_sigregs sregs; | |
4049 | int signo; | |
4050 | uint8_t retcode[S390_SYSCALL_SIZE]; | |
4051 | } sigframe; | |
4052 | ||
4053 | struct target_ucontext { | |
6fea2ea4 PM |
4054 | target_ulong tuc_flags; |
4055 | struct target_ucontext *tuc_link; | |
4056 | target_stack_t tuc_stack; | |
4057 | target_sigregs tuc_mcontext; | |
4058 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
a4c075f1 UH |
4059 | }; |
4060 | ||
4061 | typedef struct { | |
4062 | uint8_t callee_used_stack[__SIGNAL_FRAMESIZE]; | |
4063 | uint8_t retcode[S390_SYSCALL_SIZE]; | |
4064 | struct target_siginfo info; | |
4065 | struct target_ucontext uc; | |
4066 | } rt_sigframe; | |
4067 | ||
4068 | static inline abi_ulong | |
05390248 | 4069 | get_sigframe(struct target_sigaction *ka, CPUS390XState *env, size_t frame_size) |
a4c075f1 UH |
4070 | { |
4071 | abi_ulong sp; | |
4072 | ||
4073 | /* Default to using normal stack */ | |
4074 | sp = env->regs[15]; | |
4075 | ||
4076 | /* This is the X/Open sanctioned signal stack switching. */ | |
4077 | if (ka->sa_flags & TARGET_SA_ONSTACK) { | |
4078 | if (!sas_ss_flags(sp)) { | |
4079 | sp = target_sigaltstack_used.ss_sp + | |
4080 | target_sigaltstack_used.ss_size; | |
4081 | } | |
4082 | } | |
4083 | ||
4084 | /* This is the legacy signal stack switching. */ | |
4085 | else if (/* FIXME !user_mode(regs) */ 0 && | |
4086 | !(ka->sa_flags & TARGET_SA_RESTORER) && | |
4087 | ka->sa_restorer) { | |
4088 | sp = (abi_ulong) ka->sa_restorer; | |
4089 | } | |
4090 | ||
4091 | return (sp - frame_size) & -8ul; | |
4092 | } | |
4093 | ||
05390248 | 4094 | static void save_sigregs(CPUS390XState *env, target_sigregs *sregs) |
a4c075f1 UH |
4095 | { |
4096 | int i; | |
4097 | //save_access_regs(current->thread.acrs); FIXME | |
4098 | ||
4099 | /* Copy a 'clean' PSW mask to the user to avoid leaking | |
4100 | information about whether PER is currently on. */ | |
4101 | __put_user(env->psw.mask, &sregs->regs.psw.mask); | |
4102 | __put_user(env->psw.addr, &sregs->regs.psw.addr); | |
4103 | for (i = 0; i < 16; i++) { | |
4104 | __put_user(env->regs[i], &sregs->regs.gprs[i]); | |
4105 | } | |
4106 | for (i = 0; i < 16; i++) { | |
4107 | __put_user(env->aregs[i], &sregs->regs.acrs[i]); | |
4108 | } | |
4109 | /* | |
4110 | * We have to store the fp registers to current->thread.fp_regs | |
4111 | * to merge them with the emulated registers. | |
4112 | */ | |
4113 | //save_fp_regs(¤t->thread.fp_regs); FIXME | |
4114 | for (i = 0; i < 16; i++) { | |
4115 | __put_user(env->fregs[i].ll, &sregs->fpregs.fprs[i]); | |
4116 | } | |
4117 | } | |
4118 | ||
4119 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 4120 | target_sigset_t *set, CPUS390XState *env) |
a4c075f1 UH |
4121 | { |
4122 | sigframe *frame; | |
4123 | abi_ulong frame_addr; | |
4124 | ||
4125 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
4126 | qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, | |
4127 | (unsigned long long)frame_addr); | |
4128 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
4129 | goto give_sigsegv; | |
4130 | } | |
4131 | ||
4132 | qemu_log("%s: 1\n", __FUNCTION__); | |
0188fadb | 4133 | __put_user(set->sig[0], &frame->sc.oldmask[0]); |
a4c075f1 UH |
4134 | |
4135 | save_sigregs(env, &frame->sregs); | |
4136 | ||
4137 | __put_user((abi_ulong)(unsigned long)&frame->sregs, | |
4138 | (abi_ulong *)&frame->sc.sregs); | |
4139 | ||
4140 | /* Set up to return from userspace. If provided, use a stub | |
4141 | already in userspace. */ | |
4142 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
4143 | env->regs[14] = (unsigned long) | |
4144 | ka->sa_restorer | PSW_ADDR_AMODE; | |
4145 | } else { | |
4146 | env->regs[14] = (unsigned long) | |
4147 | frame->retcode | PSW_ADDR_AMODE; | |
0188fadb RV |
4148 | __put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn, |
4149 | (uint16_t *)(frame->retcode)); | |
a4c075f1 UH |
4150 | } |
4151 | ||
4152 | /* Set up backchain. */ | |
0188fadb | 4153 | __put_user(env->regs[15], (abi_ulong *) frame); |
a4c075f1 UH |
4154 | |
4155 | /* Set up registers for signal handler */ | |
cb9c6268 | 4156 | env->regs[15] = frame_addr; |
a4c075f1 UH |
4157 | env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE; |
4158 | ||
4159 | env->regs[2] = sig; //map_signal(sig); | |
cb9c6268 | 4160 | env->regs[3] = frame_addr += offsetof(typeof(*frame), sc); |
a4c075f1 UH |
4161 | |
4162 | /* We forgot to include these in the sigcontext. | |
4163 | To avoid breaking binary compatibility, they are passed as args. */ | |
4164 | env->regs[4] = 0; // FIXME: no clue... current->thread.trap_no; | |
4165 | env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr; | |
4166 | ||
4167 | /* Place signal number on stack to allow backtrace from handler. */ | |
0188fadb | 4168 | __put_user(env->regs[2], (int *) &frame->signo); |
a4c075f1 UH |
4169 | unlock_user_struct(frame, frame_addr, 1); |
4170 | return; | |
4171 | ||
4172 | give_sigsegv: | |
4173 | qemu_log("%s: give_sigsegv\n", __FUNCTION__); | |
a4c075f1 UH |
4174 | force_sig(TARGET_SIGSEGV); |
4175 | } | |
4176 | ||
4177 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
4178 | target_siginfo_t *info, | |
05390248 | 4179 | target_sigset_t *set, CPUS390XState *env) |
a4c075f1 UH |
4180 | { |
4181 | int i; | |
4182 | rt_sigframe *frame; | |
4183 | abi_ulong frame_addr; | |
4184 | ||
4185 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
4186 | qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, | |
4187 | (unsigned long long)frame_addr); | |
4188 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
4189 | goto give_sigsegv; | |
4190 | } | |
4191 | ||
4192 | qemu_log("%s: 1\n", __FUNCTION__); | |
b0fd8d18 | 4193 | copy_siginfo_to_user(&frame->info, info); |
a4c075f1 UH |
4194 | |
4195 | /* Create the ucontext. */ | |
6fea2ea4 PM |
4196 | __put_user(0, &frame->uc.tuc_flags); |
4197 | __put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link); | |
4198 | __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp); | |
a4c075f1 | 4199 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
6fea2ea4 PM |
4200 | &frame->uc.tuc_stack.ss_flags); |
4201 | __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size); | |
4202 | save_sigregs(env, &frame->uc.tuc_mcontext); | |
a4c075f1 UH |
4203 | for (i = 0; i < TARGET_NSIG_WORDS; i++) { |
4204 | __put_user((abi_ulong)set->sig[i], | |
6fea2ea4 | 4205 | (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]); |
a4c075f1 UH |
4206 | } |
4207 | ||
4208 | /* Set up to return from userspace. If provided, use a stub | |
4209 | already in userspace. */ | |
4210 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
4211 | env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE; | |
4212 | } else { | |
4213 | env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE; | |
0188fadb RV |
4214 | __put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn, |
4215 | (uint16_t *)(frame->retcode)); | |
a4c075f1 UH |
4216 | } |
4217 | ||
4218 | /* Set up backchain. */ | |
0188fadb | 4219 | __put_user(env->regs[15], (abi_ulong *) frame); |
a4c075f1 UH |
4220 | |
4221 | /* Set up registers for signal handler */ | |
cb9c6268 | 4222 | env->regs[15] = frame_addr; |
a4c075f1 UH |
4223 | env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE; |
4224 | ||
4225 | env->regs[2] = sig; //map_signal(sig); | |
cb9c6268 EI |
4226 | env->regs[3] = frame_addr + offsetof(typeof(*frame), info); |
4227 | env->regs[4] = frame_addr + offsetof(typeof(*frame), uc); | |
a4c075f1 UH |
4228 | return; |
4229 | ||
4230 | give_sigsegv: | |
4231 | qemu_log("%s: give_sigsegv\n", __FUNCTION__); | |
a4c075f1 UH |
4232 | force_sig(TARGET_SIGSEGV); |
4233 | } | |
4234 | ||
4235 | static int | |
05390248 | 4236 | restore_sigregs(CPUS390XState *env, target_sigregs *sc) |
a4c075f1 UH |
4237 | { |
4238 | int err = 0; | |
4239 | int i; | |
4240 | ||
4241 | for (i = 0; i < 16; i++) { | |
1d8b512b | 4242 | __get_user(env->regs[i], &sc->regs.gprs[i]); |
a4c075f1 UH |
4243 | } |
4244 | ||
1d8b512b | 4245 | __get_user(env->psw.mask, &sc->regs.psw.mask); |
a4c075f1 UH |
4246 | qemu_log("%s: sc->regs.psw.addr 0x%llx env->psw.addr 0x%llx\n", |
4247 | __FUNCTION__, (unsigned long long)sc->regs.psw.addr, | |
4248 | (unsigned long long)env->psw.addr); | |
1d8b512b | 4249 | __get_user(env->psw.addr, &sc->regs.psw.addr); |
a4c075f1 UH |
4250 | /* FIXME: 31-bit -> | PSW_ADDR_AMODE */ |
4251 | ||
4252 | for (i = 0; i < 16; i++) { | |
1d8b512b | 4253 | __get_user(env->aregs[i], &sc->regs.acrs[i]); |
a4c075f1 UH |
4254 | } |
4255 | for (i = 0; i < 16; i++) { | |
1d8b512b | 4256 | __get_user(env->fregs[i].ll, &sc->fpregs.fprs[i]); |
a4c075f1 UH |
4257 | } |
4258 | ||
4259 | return err; | |
4260 | } | |
4261 | ||
05390248 | 4262 | long do_sigreturn(CPUS390XState *env) |
a4c075f1 UH |
4263 | { |
4264 | sigframe *frame; | |
4265 | abi_ulong frame_addr = env->regs[15]; | |
4266 | qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, | |
4267 | (unsigned long long)frame_addr); | |
4268 | target_sigset_t target_set; | |
4269 | sigset_t set; | |
4270 | ||
4271 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
4272 | goto badframe; | |
4273 | } | |
f5f601af | 4274 | __get_user(target_set.sig[0], &frame->sc.oldmask[0]); |
a4c075f1 UH |
4275 | |
4276 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 4277 | do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */ |
a4c075f1 UH |
4278 | |
4279 | if (restore_sigregs(env, &frame->sregs)) { | |
4280 | goto badframe; | |
4281 | } | |
4282 | ||
4283 | unlock_user_struct(frame, frame_addr, 0); | |
4284 | return env->regs[2]; | |
4285 | ||
4286 | badframe: | |
a4c075f1 UH |
4287 | force_sig(TARGET_SIGSEGV); |
4288 | return 0; | |
4289 | } | |
4290 | ||
05390248 | 4291 | long do_rt_sigreturn(CPUS390XState *env) |
a4c075f1 UH |
4292 | { |
4293 | rt_sigframe *frame; | |
4294 | abi_ulong frame_addr = env->regs[15]; | |
4295 | qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, | |
4296 | (unsigned long long)frame_addr); | |
4297 | sigset_t set; | |
4298 | ||
4299 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
4300 | goto badframe; | |
4301 | } | |
6fea2ea4 | 4302 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
a4c075f1 | 4303 | |
1c275925 | 4304 | do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */ |
a4c075f1 | 4305 | |
6fea2ea4 | 4306 | if (restore_sigregs(env, &frame->uc.tuc_mcontext)) { |
a4c075f1 UH |
4307 | goto badframe; |
4308 | } | |
4309 | ||
6fea2ea4 | 4310 | if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0, |
a4c075f1 UH |
4311 | get_sp_from_cpustate(env)) == -EFAULT) { |
4312 | goto badframe; | |
4313 | } | |
4314 | unlock_user_struct(frame, frame_addr, 0); | |
4315 | return env->regs[2]; | |
4316 | ||
4317 | badframe: | |
4318 | unlock_user_struct(frame, frame_addr, 0); | |
4319 | force_sig(TARGET_SIGSEGV); | |
4320 | return 0; | |
4321 | } | |
4322 | ||
bcd4933a NF |
4323 | #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) |
4324 | ||
4325 | /* FIXME: Many of the structures are defined for both PPC and PPC64, but | |
4326 | the signal handling is different enough that we haven't implemented | |
4327 | support for PPC64 yet. Hence the restriction above. | |
4328 | ||
4329 | There are various #if'd blocks for code for TARGET_PPC64. These | |
4330 | blocks should go away so that we can successfully run 32-bit and | |
4331 | 64-bit binaries on a QEMU configured for PPC64. */ | |
4332 | ||
4333 | /* Size of dummy stack frame allocated when calling signal handler. | |
4334 | See arch/powerpc/include/asm/ptrace.h. */ | |
4335 | #if defined(TARGET_PPC64) | |
4336 | #define SIGNAL_FRAMESIZE 128 | |
4337 | #else | |
4338 | #define SIGNAL_FRAMESIZE 64 | |
4339 | #endif | |
4340 | ||
4341 | /* See arch/powerpc/include/asm/sigcontext.h. */ | |
4342 | struct target_sigcontext { | |
4343 | target_ulong _unused[4]; | |
4344 | int32_t signal; | |
4345 | #if defined(TARGET_PPC64) | |
4346 | int32_t pad0; | |
4347 | #endif | |
4348 | target_ulong handler; | |
4349 | target_ulong oldmask; | |
4350 | target_ulong regs; /* struct pt_regs __user * */ | |
4351 | /* TODO: PPC64 includes extra bits here. */ | |
4352 | }; | |
4353 | ||
4354 | /* Indices for target_mcontext.mc_gregs, below. | |
4355 | See arch/powerpc/include/asm/ptrace.h for details. */ | |
4356 | enum { | |
4357 | TARGET_PT_R0 = 0, | |
4358 | TARGET_PT_R1 = 1, | |
4359 | TARGET_PT_R2 = 2, | |
4360 | TARGET_PT_R3 = 3, | |
4361 | TARGET_PT_R4 = 4, | |
4362 | TARGET_PT_R5 = 5, | |
4363 | TARGET_PT_R6 = 6, | |
4364 | TARGET_PT_R7 = 7, | |
4365 | TARGET_PT_R8 = 8, | |
4366 | TARGET_PT_R9 = 9, | |
4367 | TARGET_PT_R10 = 10, | |
4368 | TARGET_PT_R11 = 11, | |
4369 | TARGET_PT_R12 = 12, | |
4370 | TARGET_PT_R13 = 13, | |
4371 | TARGET_PT_R14 = 14, | |
4372 | TARGET_PT_R15 = 15, | |
4373 | TARGET_PT_R16 = 16, | |
4374 | TARGET_PT_R17 = 17, | |
4375 | TARGET_PT_R18 = 18, | |
4376 | TARGET_PT_R19 = 19, | |
4377 | TARGET_PT_R20 = 20, | |
4378 | TARGET_PT_R21 = 21, | |
4379 | TARGET_PT_R22 = 22, | |
4380 | TARGET_PT_R23 = 23, | |
4381 | TARGET_PT_R24 = 24, | |
4382 | TARGET_PT_R25 = 25, | |
4383 | TARGET_PT_R26 = 26, | |
4384 | TARGET_PT_R27 = 27, | |
4385 | TARGET_PT_R28 = 28, | |
4386 | TARGET_PT_R29 = 29, | |
4387 | TARGET_PT_R30 = 30, | |
4388 | TARGET_PT_R31 = 31, | |
4389 | TARGET_PT_NIP = 32, | |
4390 | TARGET_PT_MSR = 33, | |
4391 | TARGET_PT_ORIG_R3 = 34, | |
4392 | TARGET_PT_CTR = 35, | |
4393 | TARGET_PT_LNK = 36, | |
4394 | TARGET_PT_XER = 37, | |
4395 | TARGET_PT_CCR = 38, | |
4396 | /* Yes, there are two registers with #39. One is 64-bit only. */ | |
4397 | TARGET_PT_MQ = 39, | |
4398 | TARGET_PT_SOFTE = 39, | |
4399 | TARGET_PT_TRAP = 40, | |
4400 | TARGET_PT_DAR = 41, | |
4401 | TARGET_PT_DSISR = 42, | |
4402 | TARGET_PT_RESULT = 43, | |
4403 | TARGET_PT_REGS_COUNT = 44 | |
4404 | }; | |
4405 | ||
4406 | /* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC; | |
4407 | on 64-bit PPC, sigcontext and mcontext are one and the same. */ | |
4408 | struct target_mcontext { | |
4409 | target_ulong mc_gregs[48]; | |
4410 | /* Includes fpscr. */ | |
4411 | uint64_t mc_fregs[33]; | |
4412 | target_ulong mc_pad[2]; | |
4413 | /* We need to handle Altivec and SPE at the same time, which no | |
4414 | kernel needs to do. Fortunately, the kernel defines this bit to | |
4415 | be Altivec-register-large all the time, rather than trying to | |
4416 | twiddle it based on the specific platform. */ | |
4417 | union { | |
4418 | /* SPE vector registers. One extra for SPEFSCR. */ | |
4419 | uint32_t spe[33]; | |
4420 | /* Altivec vector registers. The packing of VSCR and VRSAVE | |
4421 | varies depending on whether we're PPC64 or not: PPC64 splits | |
4422 | them apart; PPC32 stuffs them together. */ | |
4423 | #if defined(TARGET_PPC64) | |
3efa9a67 | 4424 | #define QEMU_NVRREG 34 |
bcd4933a | 4425 | #else |
3efa9a67 | 4426 | #define QEMU_NVRREG 33 |
bcd4933a | 4427 | #endif |
c227f099 | 4428 | ppc_avr_t altivec[QEMU_NVRREG]; |
3efa9a67 | 4429 | #undef QEMU_NVRREG |
bcd4933a NF |
4430 | } mc_vregs __attribute__((__aligned__(16))); |
4431 | }; | |
4432 | ||
4433 | struct target_ucontext { | |
60e99246 AJ |
4434 | target_ulong tuc_flags; |
4435 | target_ulong tuc_link; /* struct ucontext __user * */ | |
4436 | struct target_sigaltstack tuc_stack; | |
bcd4933a | 4437 | #if !defined(TARGET_PPC64) |
60e99246 AJ |
4438 | int32_t tuc_pad[7]; |
4439 | target_ulong tuc_regs; /* struct mcontext __user * | |
bcd4933a NF |
4440 | points to uc_mcontext field */ |
4441 | #endif | |
60e99246 | 4442 | target_sigset_t tuc_sigmask; |
bcd4933a | 4443 | #if defined(TARGET_PPC64) |
c227f099 | 4444 | target_sigset_t unused[15]; /* Allow for uc_sigmask growth */ |
60e99246 | 4445 | struct target_sigcontext tuc_mcontext; |
bcd4933a | 4446 | #else |
60e99246 AJ |
4447 | int32_t tuc_maskext[30]; |
4448 | int32_t tuc_pad2[3]; | |
4449 | struct target_mcontext tuc_mcontext; | |
bcd4933a NF |
4450 | #endif |
4451 | }; | |
4452 | ||
4453 | /* See arch/powerpc/kernel/signal_32.c. */ | |
4454 | struct target_sigframe { | |
4455 | struct target_sigcontext sctx; | |
4456 | struct target_mcontext mctx; | |
4457 | int32_t abigap[56]; | |
4458 | }; | |
4459 | ||
4460 | struct target_rt_sigframe { | |
4461 | struct target_siginfo info; | |
4462 | struct target_ucontext uc; | |
4463 | int32_t abigap[56]; | |
4464 | }; | |
4465 | ||
4466 | /* We use the mc_pad field for the signal return trampoline. */ | |
4467 | #define tramp mc_pad | |
4468 | ||
4469 | /* See arch/powerpc/kernel/signal.c. */ | |
4470 | static target_ulong get_sigframe(struct target_sigaction *ka, | |
05390248 | 4471 | CPUPPCState *env, |
bcd4933a NF |
4472 | int frame_size) |
4473 | { | |
4474 | target_ulong oldsp, newsp; | |
4475 | ||
4476 | oldsp = env->gpr[1]; | |
4477 | ||
4478 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && | |
32a2003a | 4479 | (sas_ss_flags(oldsp) == 0)) { |
bcd4933a NF |
4480 | oldsp = (target_sigaltstack_used.ss_sp |
4481 | + target_sigaltstack_used.ss_size); | |
4482 | } | |
4483 | ||
4484 | newsp = (oldsp - frame_size) & ~0xFUL; | |
4485 | ||
4486 | return newsp; | |
4487 | } | |
4488 | ||
c650c008 | 4489 | static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame, |
bcd4933a NF |
4490 | int sigret) |
4491 | { | |
4492 | target_ulong msr = env->msr; | |
4493 | int i; | |
4494 | target_ulong ccr = 0; | |
4495 | ||
4496 | /* In general, the kernel attempts to be intelligent about what it | |
4497 | needs to save for Altivec/FP/SPE registers. We don't care that | |
4498 | much, so we just go ahead and save everything. */ | |
4499 | ||
4500 | /* Save general registers. */ | |
4501 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
c650c008 | 4502 | __put_user(env->gpr[i], &frame->mc_gregs[i]); |
bcd4933a | 4503 | } |
c650c008 RV |
4504 | __put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]); |
4505 | __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]); | |
4506 | __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]); | |
4507 | __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]); | |
bcd4933a NF |
4508 | |
4509 | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { | |
4510 | ccr |= env->crf[i] << (32 - ((i + 1) * 4)); | |
4511 | } | |
c650c008 | 4512 | __put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]); |
bcd4933a NF |
4513 | |
4514 | /* Save Altivec registers if necessary. */ | |
4515 | if (env->insns_flags & PPC_ALTIVEC) { | |
4516 | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { | |
c227f099 AL |
4517 | ppc_avr_t *avr = &env->avr[i]; |
4518 | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; | |
bcd4933a | 4519 | |
c650c008 RV |
4520 | __put_user(avr->u64[0], &vreg->u64[0]); |
4521 | __put_user(avr->u64[1], &vreg->u64[1]); | |
bcd4933a NF |
4522 | } |
4523 | /* Set MSR_VR in the saved MSR value to indicate that | |
4524 | frame->mc_vregs contains valid data. */ | |
4525 | msr |= MSR_VR; | |
c650c008 RV |
4526 | __put_user((uint32_t)env->spr[SPR_VRSAVE], |
4527 | &frame->mc_vregs.altivec[32].u32[3]); | |
bcd4933a NF |
4528 | } |
4529 | ||
4530 | /* Save floating point registers. */ | |
4531 | if (env->insns_flags & PPC_FLOAT) { | |
4532 | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { | |
c650c008 | 4533 | __put_user(env->fpr[i], &frame->mc_fregs[i]); |
bcd4933a | 4534 | } |
c650c008 | 4535 | __put_user((uint64_t) env->fpscr, &frame->mc_fregs[32]); |
bcd4933a NF |
4536 | } |
4537 | ||
4538 | /* Save SPE registers. The kernel only saves the high half. */ | |
4539 | if (env->insns_flags & PPC_SPE) { | |
4540 | #if defined(TARGET_PPC64) | |
4541 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
c650c008 | 4542 | __put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i]); |
bcd4933a NF |
4543 | } |
4544 | #else | |
4545 | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { | |
c650c008 | 4546 | __put_user(env->gprh[i], &frame->mc_vregs.spe[i]); |
bcd4933a NF |
4547 | } |
4548 | #endif | |
4549 | /* Set MSR_SPE in the saved MSR value to indicate that | |
4550 | frame->mc_vregs contains valid data. */ | |
4551 | msr |= MSR_SPE; | |
c650c008 | 4552 | __put_user(env->spe_fscr, &frame->mc_vregs.spe[32]); |
bcd4933a NF |
4553 | } |
4554 | ||
4555 | /* Store MSR. */ | |
c650c008 | 4556 | __put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]); |
bcd4933a NF |
4557 | |
4558 | /* Set up the sigreturn trampoline: li r0,sigret; sc. */ | |
4559 | if (sigret) { | |
c650c008 RV |
4560 | __put_user(0x38000000UL | sigret, &frame->tramp[0]); |
4561 | __put_user(0x44000002UL, &frame->tramp[1]); | |
bcd4933a | 4562 | } |
bcd4933a NF |
4563 | } |
4564 | ||
c650c008 RV |
4565 | static void restore_user_regs(CPUPPCState *env, |
4566 | struct target_mcontext *frame, int sig) | |
bcd4933a NF |
4567 | { |
4568 | target_ulong save_r2 = 0; | |
4569 | target_ulong msr; | |
4570 | target_ulong ccr; | |
4571 | ||
4572 | int i; | |
4573 | ||
4574 | if (!sig) { | |
4575 | save_r2 = env->gpr[2]; | |
4576 | } | |
4577 | ||
4578 | /* Restore general registers. */ | |
4579 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
c650c008 | 4580 | __get_user(env->gpr[i], &frame->mc_gregs[i]); |
bcd4933a | 4581 | } |
c650c008 RV |
4582 | __get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]); |
4583 | __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]); | |
4584 | __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]); | |
4585 | __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]); | |
4586 | __get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]); | |
bcd4933a NF |
4587 | |
4588 | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { | |
4589 | env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf; | |
4590 | } | |
4591 | ||
4592 | if (!sig) { | |
4593 | env->gpr[2] = save_r2; | |
4594 | } | |
4595 | /* Restore MSR. */ | |
c650c008 | 4596 | __get_user(msr, &frame->mc_gregs[TARGET_PT_MSR]); |
bcd4933a NF |
4597 | |
4598 | /* If doing signal return, restore the previous little-endian mode. */ | |
4599 | if (sig) | |
4600 | env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE); | |
4601 | ||
4602 | /* Restore Altivec registers if necessary. */ | |
4603 | if (env->insns_flags & PPC_ALTIVEC) { | |
4604 | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { | |
c227f099 AL |
4605 | ppc_avr_t *avr = &env->avr[i]; |
4606 | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; | |
bcd4933a | 4607 | |
c650c008 RV |
4608 | __get_user(avr->u64[0], &vreg->u64[0]); |
4609 | __get_user(avr->u64[1], &vreg->u64[1]); | |
bcd4933a NF |
4610 | } |
4611 | /* Set MSR_VEC in the saved MSR value to indicate that | |
4612 | frame->mc_vregs contains valid data. */ | |
c650c008 RV |
4613 | __get_user(env->spr[SPR_VRSAVE], |
4614 | (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3])); | |
bcd4933a NF |
4615 | } |
4616 | ||
4617 | /* Restore floating point registers. */ | |
4618 | if (env->insns_flags & PPC_FLOAT) { | |
4619 | uint64_t fpscr; | |
4620 | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { | |
c650c008 | 4621 | __get_user(env->fpr[i], &frame->mc_fregs[i]); |
bcd4933a | 4622 | } |
c650c008 | 4623 | __get_user(fpscr, &frame->mc_fregs[32]); |
bcd4933a NF |
4624 | env->fpscr = (uint32_t) fpscr; |
4625 | } | |
4626 | ||
4627 | /* Save SPE registers. The kernel only saves the high half. */ | |
4628 | if (env->insns_flags & PPC_SPE) { | |
4629 | #if defined(TARGET_PPC64) | |
4630 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
4631 | uint32_t hi; | |
4632 | ||
c650c008 | 4633 | __get_user(hi, &frame->mc_vregs.spe[i]); |
bcd4933a NF |
4634 | env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]); |
4635 | } | |
4636 | #else | |
4637 | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { | |
c650c008 | 4638 | __get_user(env->gprh[i], &frame->mc_vregs.spe[i]); |
bcd4933a NF |
4639 | } |
4640 | #endif | |
c650c008 | 4641 | __get_user(env->spe_fscr, &frame->mc_vregs.spe[32]); |
bcd4933a | 4642 | } |
bcd4933a NF |
4643 | } |
4644 | ||
4645 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 4646 | target_sigset_t *set, CPUPPCState *env) |
bcd4933a NF |
4647 | { |
4648 | struct target_sigframe *frame; | |
4649 | struct target_sigcontext *sc; | |
4650 | target_ulong frame_addr, newsp; | |
4651 | int err = 0; | |
4652 | int signal; | |
4653 | ||
4654 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
4655 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) | |
4656 | goto sigsegv; | |
4657 | sc = &frame->sctx; | |
4658 | ||
4659 | signal = current_exec_domain_sig(sig); | |
4660 | ||
1d8b512b RV |
4661 | __put_user(ka->_sa_handler, &sc->handler); |
4662 | __put_user(set->sig[0], &sc->oldmask); | |
bcd4933a | 4663 | #if defined(TARGET_PPC64) |
1d8b512b | 4664 | __put_user(set->sig[0] >> 32, &sc->_unused[3]); |
bcd4933a | 4665 | #else |
1d8b512b | 4666 | __put_user(set->sig[1], &sc->_unused[3]); |
bcd4933a | 4667 | #endif |
1d8b512b RV |
4668 | __put_user(h2g(&frame->mctx), &sc->regs); |
4669 | __put_user(sig, &sc->signal); | |
bcd4933a NF |
4670 | |
4671 | /* Save user regs. */ | |
c650c008 | 4672 | save_user_regs(env, &frame->mctx, TARGET_NR_sigreturn); |
bcd4933a NF |
4673 | |
4674 | /* The kernel checks for the presence of a VDSO here. We don't | |
4675 | emulate a vdso, so use a sigreturn system call. */ | |
4676 | env->lr = (target_ulong) h2g(frame->mctx.tramp); | |
4677 | ||
4678 | /* Turn off all fp exceptions. */ | |
4679 | env->fpscr = 0; | |
4680 | ||
4681 | /* Create a stack frame for the caller of the handler. */ | |
4682 | newsp = frame_addr - SIGNAL_FRAMESIZE; | |
beb526b1 | 4683 | err |= put_user(env->gpr[1], newsp, target_ulong); |
bcd4933a NF |
4684 | |
4685 | if (err) | |
4686 | goto sigsegv; | |
4687 | ||
4688 | /* Set up registers for signal handler. */ | |
4689 | env->gpr[1] = newsp; | |
4690 | env->gpr[3] = signal; | |
61993a67 | 4691 | env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx); |
bcd4933a NF |
4692 | env->nip = (target_ulong) ka->_sa_handler; |
4693 | /* Signal handlers are entered in big-endian mode. */ | |
4694 | env->msr &= ~MSR_LE; | |
4695 | ||
4696 | unlock_user_struct(frame, frame_addr, 1); | |
4697 | return; | |
4698 | ||
4699 | sigsegv: | |
4700 | unlock_user_struct(frame, frame_addr, 1); | |
eeacee4d | 4701 | qemu_log("segfaulting from setup_frame\n"); |
66393fb9 | 4702 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4703 | } |
4704 | ||
4705 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 4706 | target_siginfo_t *info, |
05390248 | 4707 | target_sigset_t *set, CPUPPCState *env) |
bcd4933a NF |
4708 | { |
4709 | struct target_rt_sigframe *rt_sf; | |
4710 | struct target_mcontext *frame; | |
4711 | target_ulong rt_sf_addr, newsp = 0; | |
4712 | int i, err = 0; | |
4713 | int signal; | |
4714 | ||
4715 | rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf)); | |
4716 | if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1)) | |
4717 | goto sigsegv; | |
4718 | ||
4719 | signal = current_exec_domain_sig(sig); | |
4720 | ||
b0fd8d18 | 4721 | copy_siginfo_to_user(&rt_sf->info, info); |
bcd4933a | 4722 | |
1d8b512b RV |
4723 | __put_user(0, &rt_sf->uc.tuc_flags); |
4724 | __put_user(0, &rt_sf->uc.tuc_link); | |
4725 | __put_user((target_ulong)target_sigaltstack_used.ss_sp, | |
4726 | &rt_sf->uc.tuc_stack.ss_sp); | |
4727 | __put_user(sas_ss_flags(env->gpr[1]), | |
4728 | &rt_sf->uc.tuc_stack.ss_flags); | |
4729 | __put_user(target_sigaltstack_used.ss_size, | |
4730 | &rt_sf->uc.tuc_stack.ss_size); | |
4731 | __put_user(h2g (&rt_sf->uc.tuc_mcontext), | |
4732 | &rt_sf->uc.tuc_regs); | |
bcd4933a | 4733 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1d8b512b | 4734 | __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]); |
bcd4933a NF |
4735 | } |
4736 | ||
60e99246 | 4737 | frame = &rt_sf->uc.tuc_mcontext; |
c650c008 | 4738 | save_user_regs(env, frame, TARGET_NR_rt_sigreturn); |
bcd4933a NF |
4739 | |
4740 | /* The kernel checks for the presence of a VDSO here. We don't | |
4741 | emulate a vdso, so use a sigreturn system call. */ | |
4742 | env->lr = (target_ulong) h2g(frame->tramp); | |
4743 | ||
4744 | /* Turn off all fp exceptions. */ | |
4745 | env->fpscr = 0; | |
4746 | ||
4747 | /* Create a stack frame for the caller of the handler. */ | |
4748 | newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16); | |
1d8b512b | 4749 | __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp); |
bcd4933a NF |
4750 | |
4751 | if (err) | |
4752 | goto sigsegv; | |
4753 | ||
4754 | /* Set up registers for signal handler. */ | |
4755 | env->gpr[1] = newsp; | |
4756 | env->gpr[3] = (target_ulong) signal; | |
4757 | env->gpr[4] = (target_ulong) h2g(&rt_sf->info); | |
4758 | env->gpr[5] = (target_ulong) h2g(&rt_sf->uc); | |
4759 | env->gpr[6] = (target_ulong) h2g(rt_sf); | |
4760 | env->nip = (target_ulong) ka->_sa_handler; | |
4761 | /* Signal handlers are entered in big-endian mode. */ | |
4762 | env->msr &= ~MSR_LE; | |
4763 | ||
4764 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4765 | return; | |
4766 | ||
4767 | sigsegv: | |
4768 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
eeacee4d | 4769 | qemu_log("segfaulting from setup_rt_frame\n"); |
66393fb9 | 4770 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4771 | |
4772 | } | |
4773 | ||
05390248 | 4774 | long do_sigreturn(CPUPPCState *env) |
bcd4933a NF |
4775 | { |
4776 | struct target_sigcontext *sc = NULL; | |
4777 | struct target_mcontext *sr = NULL; | |
b04636f8 | 4778 | target_ulong sr_addr = 0, sc_addr; |
bcd4933a | 4779 | sigset_t blocked; |
c227f099 | 4780 | target_sigset_t set; |
bcd4933a NF |
4781 | |
4782 | sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE; | |
4783 | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) | |
4784 | goto sigsegv; | |
4785 | ||
4786 | #if defined(TARGET_PPC64) | |
4787 | set.sig[0] = sc->oldmask + ((long)(sc->_unused[3]) << 32); | |
4788 | #else | |
f5f601af RV |
4789 | __get_user(set.sig[0], &sc->oldmask); |
4790 | __get_user(set.sig[1], &sc->_unused[3]); | |
bcd4933a NF |
4791 | #endif |
4792 | target_to_host_sigset_internal(&blocked, &set); | |
1c275925 | 4793 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
bcd4933a | 4794 | |
f5f601af | 4795 | __get_user(sr_addr, &sc->regs); |
bcd4933a NF |
4796 | if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1)) |
4797 | goto sigsegv; | |
c650c008 | 4798 | restore_user_regs(env, sr, 1); |
bcd4933a NF |
4799 | |
4800 | unlock_user_struct(sr, sr_addr, 1); | |
4801 | unlock_user_struct(sc, sc_addr, 1); | |
4802 | return -TARGET_QEMU_ESIGRETURN; | |
4803 | ||
4804 | sigsegv: | |
4805 | unlock_user_struct(sr, sr_addr, 1); | |
4806 | unlock_user_struct(sc, sc_addr, 1); | |
eeacee4d | 4807 | qemu_log("segfaulting from do_sigreturn\n"); |
66393fb9 | 4808 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4809 | return 0; |
4810 | } | |
4811 | ||
4812 | /* See arch/powerpc/kernel/signal_32.c. */ | |
05390248 | 4813 | static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int sig) |
bcd4933a NF |
4814 | { |
4815 | struct target_mcontext *mcp; | |
4816 | target_ulong mcp_addr; | |
4817 | sigset_t blocked; | |
c227f099 | 4818 | target_sigset_t set; |
bcd4933a | 4819 | |
60e99246 | 4820 | if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext, tuc_sigmask), |
bcd4933a NF |
4821 | sizeof (set))) |
4822 | return 1; | |
4823 | ||
4824 | #if defined(TARGET_PPC64) | |
4825 | fprintf (stderr, "do_setcontext: not implemented\n"); | |
4826 | return 0; | |
4827 | #else | |
60e99246 | 4828 | if (__get_user(mcp_addr, &ucp->tuc_regs)) |
bcd4933a NF |
4829 | return 1; |
4830 | ||
4831 | if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1)) | |
4832 | return 1; | |
4833 | ||
4834 | target_to_host_sigset_internal(&blocked, &set); | |
1c275925 | 4835 | do_sigprocmask(SIG_SETMASK, &blocked, NULL); |
c650c008 | 4836 | restore_user_regs(env, mcp, sig); |
bcd4933a NF |
4837 | |
4838 | unlock_user_struct(mcp, mcp_addr, 1); | |
4839 | return 0; | |
bcd4933a NF |
4840 | #endif |
4841 | } | |
4842 | ||
05390248 | 4843 | long do_rt_sigreturn(CPUPPCState *env) |
bcd4933a NF |
4844 | { |
4845 | struct target_rt_sigframe *rt_sf = NULL; | |
4846 | target_ulong rt_sf_addr; | |
4847 | ||
4848 | rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16; | |
4849 | if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1)) | |
4850 | goto sigsegv; | |
4851 | ||
4852 | if (do_setcontext(&rt_sf->uc, env, 1)) | |
4853 | goto sigsegv; | |
4854 | ||
4855 | do_sigaltstack(rt_sf_addr | |
60e99246 | 4856 | + offsetof(struct target_rt_sigframe, uc.tuc_stack), |
bcd4933a NF |
4857 | 0, env->gpr[1]); |
4858 | ||
4859 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4860 | return -TARGET_QEMU_ESIGRETURN; | |
4861 | ||
4862 | sigsegv: | |
4863 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
eeacee4d | 4864 | qemu_log("segfaulting from do_rt_sigreturn\n"); |
66393fb9 | 4865 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4866 | return 0; |
4867 | } | |
4868 | ||
492a8744 LV |
4869 | #elif defined(TARGET_M68K) |
4870 | ||
4871 | struct target_sigcontext { | |
4872 | abi_ulong sc_mask; | |
4873 | abi_ulong sc_usp; | |
4874 | abi_ulong sc_d0; | |
4875 | abi_ulong sc_d1; | |
4876 | abi_ulong sc_a0; | |
4877 | abi_ulong sc_a1; | |
4878 | unsigned short sc_sr; | |
4879 | abi_ulong sc_pc; | |
4880 | }; | |
4881 | ||
4882 | struct target_sigframe | |
4883 | { | |
4884 | abi_ulong pretcode; | |
4885 | int sig; | |
4886 | int code; | |
4887 | abi_ulong psc; | |
4888 | char retcode[8]; | |
4889 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; | |
4890 | struct target_sigcontext sc; | |
4891 | }; | |
7181155d | 4892 | |
c227f099 | 4893 | typedef int target_greg_t; |
7181155d | 4894 | #define TARGET_NGREG 18 |
c227f099 | 4895 | typedef target_greg_t target_gregset_t[TARGET_NGREG]; |
7181155d LV |
4896 | |
4897 | typedef struct target_fpregset { | |
4898 | int f_fpcntl[3]; | |
4899 | int f_fpregs[8*3]; | |
c227f099 | 4900 | } target_fpregset_t; |
7181155d LV |
4901 | |
4902 | struct target_mcontext { | |
4903 | int version; | |
c227f099 AL |
4904 | target_gregset_t gregs; |
4905 | target_fpregset_t fpregs; | |
7181155d LV |
4906 | }; |
4907 | ||
4908 | #define TARGET_MCONTEXT_VERSION 2 | |
4909 | ||
4910 | struct target_ucontext { | |
60e99246 AJ |
4911 | abi_ulong tuc_flags; |
4912 | abi_ulong tuc_link; | |
4913 | target_stack_t tuc_stack; | |
4914 | struct target_mcontext tuc_mcontext; | |
4915 | abi_long tuc_filler[80]; | |
4916 | target_sigset_t tuc_sigmask; | |
7181155d LV |
4917 | }; |
4918 | ||
4919 | struct target_rt_sigframe | |
4920 | { | |
4921 | abi_ulong pretcode; | |
4922 | int sig; | |
4923 | abi_ulong pinfo; | |
4924 | abi_ulong puc; | |
4925 | char retcode[8]; | |
4926 | struct target_siginfo info; | |
4927 | struct target_ucontext uc; | |
4928 | }; | |
492a8744 | 4929 | |
41ecc72b RV |
4930 | static void setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env, |
4931 | abi_ulong mask) | |
492a8744 | 4932 | { |
1d8b512b RV |
4933 | __put_user(mask, &sc->sc_mask); |
4934 | __put_user(env->aregs[7], &sc->sc_usp); | |
4935 | __put_user(env->dregs[0], &sc->sc_d0); | |
4936 | __put_user(env->dregs[1], &sc->sc_d1); | |
4937 | __put_user(env->aregs[0], &sc->sc_a0); | |
4938 | __put_user(env->aregs[1], &sc->sc_a1); | |
4939 | __put_user(env->sr, &sc->sc_sr); | |
4940 | __put_user(env->pc, &sc->sc_pc); | |
492a8744 LV |
4941 | } |
4942 | ||
016d2e1d | 4943 | static void |
05390248 | 4944 | restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc, int *pd0) |
492a8744 | 4945 | { |
492a8744 LV |
4946 | int temp; |
4947 | ||
1d8b512b RV |
4948 | __get_user(env->aregs[7], &sc->sc_usp); |
4949 | __get_user(env->dregs[1], &sc->sc_d1); | |
4950 | __get_user(env->aregs[0], &sc->sc_a0); | |
4951 | __get_user(env->aregs[1], &sc->sc_a1); | |
4952 | __get_user(env->pc, &sc->sc_pc); | |
4953 | __get_user(temp, &sc->sc_sr); | |
492a8744 LV |
4954 | env->sr = (env->sr & 0xff00) | (temp & 0xff); |
4955 | ||
4956 | *pd0 = tswapl(sc->sc_d0); | |
492a8744 LV |
4957 | } |
4958 | ||
4959 | /* | |
4960 | * Determine which stack to use.. | |
4961 | */ | |
4962 | static inline abi_ulong | |
05390248 AF |
4963 | get_sigframe(struct target_sigaction *ka, CPUM68KState *regs, |
4964 | size_t frame_size) | |
492a8744 LV |
4965 | { |
4966 | unsigned long sp; | |
4967 | ||
4968 | sp = regs->aregs[7]; | |
4969 | ||
4970 | /* This is the X/Open sanctioned signal stack switching. */ | |
4971 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { | |
4972 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
4973 | } | |
4974 | ||
4975 | return ((sp - frame_size) & -8UL); | |
4976 | } | |
4977 | ||
4978 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 4979 | target_sigset_t *set, CPUM68KState *env) |
492a8744 LV |
4980 | { |
4981 | struct target_sigframe *frame; | |
4982 | abi_ulong frame_addr; | |
4983 | abi_ulong retcode_addr; | |
4984 | abi_ulong sc_addr; | |
492a8744 LV |
4985 | int i; |
4986 | ||
4987 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
4988 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
4989 | goto give_sigsegv; | |
4990 | ||
1d8b512b | 4991 | __put_user(sig, &frame->sig); |
492a8744 LV |
4992 | |
4993 | sc_addr = frame_addr + offsetof(struct target_sigframe, sc); | |
1d8b512b | 4994 | __put_user(sc_addr, &frame->psc); |
492a8744 | 4995 | |
41ecc72b | 4996 | setup_sigcontext(&frame->sc, env, set->sig[0]); |
492a8744 LV |
4997 | |
4998 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
0188fadb | 4999 | __put_user(set->sig[i], &frame->extramask[i - 1]); |
492a8744 LV |
5000 | } |
5001 | ||
5002 | /* Set up to return from userspace. */ | |
5003 | ||
5004 | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode); | |
1d8b512b | 5005 | __put_user(retcode_addr, &frame->pretcode); |
492a8744 LV |
5006 | |
5007 | /* moveq #,d0; trap #0 */ | |
5008 | ||
1d8b512b | 5009 | __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16), |
492a8744 LV |
5010 | (long *)(frame->retcode)); |
5011 | ||
492a8744 LV |
5012 | /* Set up to return from userspace */ |
5013 | ||
5014 | env->aregs[7] = frame_addr; | |
5015 | env->pc = ka->_sa_handler; | |
5016 | ||
5017 | unlock_user_struct(frame, frame_addr, 1); | |
5018 | return; | |
5019 | ||
5020 | give_sigsegv: | |
66393fb9 | 5021 | force_sig(TARGET_SIGSEGV); |
492a8744 LV |
5022 | } |
5023 | ||
7181155d | 5024 | static inline int target_rt_setup_ucontext(struct target_ucontext *uc, |
05390248 | 5025 | CPUM68KState *env) |
7181155d | 5026 | { |
60e99246 | 5027 | target_greg_t *gregs = uc->tuc_mcontext.gregs; |
7181155d | 5028 | |
1d8b512b RV |
5029 | __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version); |
5030 | __put_user(env->dregs[0], &gregs[0]); | |
5031 | __put_user(env->dregs[1], &gregs[1]); | |
5032 | __put_user(env->dregs[2], &gregs[2]); | |
5033 | __put_user(env->dregs[3], &gregs[3]); | |
5034 | __put_user(env->dregs[4], &gregs[4]); | |
5035 | __put_user(env->dregs[5], &gregs[5]); | |
5036 | __put_user(env->dregs[6], &gregs[6]); | |
5037 | __put_user(env->dregs[7], &gregs[7]); | |
5038 | __put_user(env->aregs[0], &gregs[8]); | |
5039 | __put_user(env->aregs[1], &gregs[9]); | |
5040 | __put_user(env->aregs[2], &gregs[10]); | |
5041 | __put_user(env->aregs[3], &gregs[11]); | |
5042 | __put_user(env->aregs[4], &gregs[12]); | |
5043 | __put_user(env->aregs[5], &gregs[13]); | |
5044 | __put_user(env->aregs[6], &gregs[14]); | |
5045 | __put_user(env->aregs[7], &gregs[15]); | |
5046 | __put_user(env->pc, &gregs[16]); | |
5047 | __put_user(env->sr, &gregs[17]); | |
7181155d | 5048 | |
1d8b512b | 5049 | return 0; |
7181155d LV |
5050 | } |
5051 | ||
05390248 | 5052 | static inline int target_rt_restore_ucontext(CPUM68KState *env, |
7181155d LV |
5053 | struct target_ucontext *uc, |
5054 | int *pd0) | |
5055 | { | |
5056 | int temp; | |
60e99246 | 5057 | target_greg_t *gregs = uc->tuc_mcontext.gregs; |
7181155d | 5058 | |
1d8b512b | 5059 | __get_user(temp, &uc->tuc_mcontext.version); |
7181155d LV |
5060 | if (temp != TARGET_MCONTEXT_VERSION) |
5061 | goto badframe; | |
5062 | ||
5063 | /* restore passed registers */ | |
1d8b512b RV |
5064 | __get_user(env->dregs[0], &gregs[0]); |
5065 | __get_user(env->dregs[1], &gregs[1]); | |
5066 | __get_user(env->dregs[2], &gregs[2]); | |
5067 | __get_user(env->dregs[3], &gregs[3]); | |
5068 | __get_user(env->dregs[4], &gregs[4]); | |
5069 | __get_user(env->dregs[5], &gregs[5]); | |
5070 | __get_user(env->dregs[6], &gregs[6]); | |
5071 | __get_user(env->dregs[7], &gregs[7]); | |
5072 | __get_user(env->aregs[0], &gregs[8]); | |
5073 | __get_user(env->aregs[1], &gregs[9]); | |
5074 | __get_user(env->aregs[2], &gregs[10]); | |
5075 | __get_user(env->aregs[3], &gregs[11]); | |
5076 | __get_user(env->aregs[4], &gregs[12]); | |
5077 | __get_user(env->aregs[5], &gregs[13]); | |
5078 | __get_user(env->aregs[6], &gregs[14]); | |
5079 | __get_user(env->aregs[7], &gregs[15]); | |
5080 | __get_user(env->pc, &gregs[16]); | |
5081 | __get_user(temp, &gregs[17]); | |
7181155d LV |
5082 | env->sr = (env->sr & 0xff00) | (temp & 0xff); |
5083 | ||
5084 | *pd0 = env->dregs[0]; | |
1d8b512b | 5085 | return 0; |
7181155d LV |
5086 | |
5087 | badframe: | |
5088 | return 1; | |
5089 | } | |
5090 | ||
492a8744 | 5091 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 5092 | target_siginfo_t *info, |
05390248 | 5093 | target_sigset_t *set, CPUM68KState *env) |
492a8744 | 5094 | { |
7181155d LV |
5095 | struct target_rt_sigframe *frame; |
5096 | abi_ulong frame_addr; | |
5097 | abi_ulong retcode_addr; | |
5098 | abi_ulong info_addr; | |
5099 | abi_ulong uc_addr; | |
5100 | int err = 0; | |
5101 | int i; | |
5102 | ||
5103 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
5104 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
5105 | goto give_sigsegv; | |
5106 | ||
1d8b512b | 5107 | __put_user(sig, &frame->sig); |
7181155d LV |
5108 | |
5109 | info_addr = frame_addr + offsetof(struct target_rt_sigframe, info); | |
1d8b512b | 5110 | __put_user(info_addr, &frame->pinfo); |
7181155d LV |
5111 | |
5112 | uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
1d8b512b | 5113 | __put_user(uc_addr, &frame->puc); |
7181155d | 5114 | |
b0fd8d18 | 5115 | copy_siginfo_to_user(&frame->info, info); |
7181155d LV |
5116 | |
5117 | /* Create the ucontext */ | |
5118 | ||
1d8b512b RV |
5119 | __put_user(0, &frame->uc.tuc_flags); |
5120 | __put_user(0, &frame->uc.tuc_link); | |
5121 | __put_user(target_sigaltstack_used.ss_sp, | |
5122 | &frame->uc.tuc_stack.ss_sp); | |
5123 | __put_user(sas_ss_flags(env->aregs[7]), | |
5124 | &frame->uc.tuc_stack.ss_flags); | |
5125 | __put_user(target_sigaltstack_used.ss_size, | |
5126 | &frame->uc.tuc_stack.ss_size); | |
7181155d LV |
5127 | err |= target_rt_setup_ucontext(&frame->uc, env); |
5128 | ||
5129 | if (err) | |
5130 | goto give_sigsegv; | |
5131 | ||
5132 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
0188fadb | 5133 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
7181155d LV |
5134 | } |
5135 | ||
5136 | /* Set up to return from userspace. */ | |
5137 | ||
5138 | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode); | |
1d8b512b | 5139 | __put_user(retcode_addr, &frame->pretcode); |
7181155d LV |
5140 | |
5141 | /* moveq #,d0; notb d0; trap #0 */ | |
5142 | ||
1d8b512b RV |
5143 | __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16), |
5144 | (long *)(frame->retcode + 0)); | |
5145 | __put_user(0x4e40, (short *)(frame->retcode + 4)); | |
7181155d LV |
5146 | |
5147 | if (err) | |
5148 | goto give_sigsegv; | |
5149 | ||
5150 | /* Set up to return from userspace */ | |
5151 | ||
5152 | env->aregs[7] = frame_addr; | |
5153 | env->pc = ka->_sa_handler; | |
5154 | ||
5155 | unlock_user_struct(frame, frame_addr, 1); | |
5156 | return; | |
5157 | ||
5158 | give_sigsegv: | |
5159 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 5160 | force_sig(TARGET_SIGSEGV); |
492a8744 LV |
5161 | } |
5162 | ||
05390248 | 5163 | long do_sigreturn(CPUM68KState *env) |
492a8744 LV |
5164 | { |
5165 | struct target_sigframe *frame; | |
5166 | abi_ulong frame_addr = env->aregs[7] - 4; | |
c227f099 | 5167 | target_sigset_t target_set; |
492a8744 LV |
5168 | sigset_t set; |
5169 | int d0, i; | |
5170 | ||
5171 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
5172 | goto badframe; | |
5173 | ||
5174 | /* set blocked signals */ | |
5175 | ||
f5f601af | 5176 | __get_user(target_set.sig[0], &frame->sc.sc_mask); |
492a8744 LV |
5177 | |
5178 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
f5f601af | 5179 | __get_user(target_set.sig[i], &frame->extramask[i - 1]); |
492a8744 LV |
5180 | } |
5181 | ||
5182 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 5183 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
492a8744 LV |
5184 | |
5185 | /* restore registers */ | |
5186 | ||
016d2e1d | 5187 | restore_sigcontext(env, &frame->sc, &d0); |
492a8744 LV |
5188 | |
5189 | unlock_user_struct(frame, frame_addr, 0); | |
5190 | return d0; | |
5191 | ||
5192 | badframe: | |
492a8744 LV |
5193 | force_sig(TARGET_SIGSEGV); |
5194 | return 0; | |
5195 | } | |
5196 | ||
05390248 | 5197 | long do_rt_sigreturn(CPUM68KState *env) |
492a8744 | 5198 | { |
7181155d LV |
5199 | struct target_rt_sigframe *frame; |
5200 | abi_ulong frame_addr = env->aregs[7] - 4; | |
c227f099 | 5201 | target_sigset_t target_set; |
7181155d LV |
5202 | sigset_t set; |
5203 | int d0; | |
5204 | ||
5205 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
5206 | goto badframe; | |
5207 | ||
5208 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 5209 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
7181155d LV |
5210 | |
5211 | /* restore registers */ | |
5212 | ||
5213 | if (target_rt_restore_ucontext(env, &frame->uc, &d0)) | |
5214 | goto badframe; | |
5215 | ||
5216 | if (do_sigaltstack(frame_addr + | |
60e99246 | 5217 | offsetof(struct target_rt_sigframe, uc.tuc_stack), |
7181155d LV |
5218 | 0, get_sp_from_cpustate(env)) == -EFAULT) |
5219 | goto badframe; | |
5220 | ||
5221 | unlock_user_struct(frame, frame_addr, 0); | |
5222 | return d0; | |
5223 | ||
5224 | badframe: | |
5225 | unlock_user_struct(frame, frame_addr, 0); | |
5226 | force_sig(TARGET_SIGSEGV); | |
5227 | return 0; | |
492a8744 LV |
5228 | } |
5229 | ||
6049f4f8 RH |
5230 | #elif defined(TARGET_ALPHA) |
5231 | ||
5232 | struct target_sigcontext { | |
5233 | abi_long sc_onstack; | |
5234 | abi_long sc_mask; | |
5235 | abi_long sc_pc; | |
5236 | abi_long sc_ps; | |
5237 | abi_long sc_regs[32]; | |
5238 | abi_long sc_ownedfp; | |
5239 | abi_long sc_fpregs[32]; | |
5240 | abi_ulong sc_fpcr; | |
5241 | abi_ulong sc_fp_control; | |
5242 | abi_ulong sc_reserved1; | |
5243 | abi_ulong sc_reserved2; | |
5244 | abi_ulong sc_ssize; | |
5245 | abi_ulong sc_sbase; | |
5246 | abi_ulong sc_traparg_a0; | |
5247 | abi_ulong sc_traparg_a1; | |
5248 | abi_ulong sc_traparg_a2; | |
5249 | abi_ulong sc_fp_trap_pc; | |
5250 | abi_ulong sc_fp_trigger_sum; | |
5251 | abi_ulong sc_fp_trigger_inst; | |
5252 | }; | |
5253 | ||
5254 | struct target_ucontext { | |
60e99246 AJ |
5255 | abi_ulong tuc_flags; |
5256 | abi_ulong tuc_link; | |
5257 | abi_ulong tuc_osf_sigmask; | |
5258 | target_stack_t tuc_stack; | |
5259 | struct target_sigcontext tuc_mcontext; | |
5260 | target_sigset_t tuc_sigmask; | |
6049f4f8 RH |
5261 | }; |
5262 | ||
5263 | struct target_sigframe { | |
5264 | struct target_sigcontext sc; | |
5265 | unsigned int retcode[3]; | |
5266 | }; | |
5267 | ||
5268 | struct target_rt_sigframe { | |
5269 | target_siginfo_t info; | |
5270 | struct target_ucontext uc; | |
5271 | unsigned int retcode[3]; | |
5272 | }; | |
5273 | ||
5274 | #define INSN_MOV_R30_R16 0x47fe0410 | |
5275 | #define INSN_LDI_R0 0x201f0000 | |
5276 | #define INSN_CALLSYS 0x00000083 | |
5277 | ||
41ecc72b | 5278 | static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env, |
6049f4f8 RH |
5279 | abi_ulong frame_addr, target_sigset_t *set) |
5280 | { | |
41ecc72b | 5281 | int i; |
6049f4f8 | 5282 | |
1d8b512b RV |
5283 | __put_user(on_sig_stack(frame_addr), &sc->sc_onstack); |
5284 | __put_user(set->sig[0], &sc->sc_mask); | |
5285 | __put_user(env->pc, &sc->sc_pc); | |
5286 | __put_user(8, &sc->sc_ps); | |
6049f4f8 RH |
5287 | |
5288 | for (i = 0; i < 31; ++i) { | |
1d8b512b | 5289 | __put_user(env->ir[i], &sc->sc_regs[i]); |
6049f4f8 | 5290 | } |
1d8b512b | 5291 | __put_user(0, &sc->sc_regs[31]); |
6049f4f8 RH |
5292 | |
5293 | for (i = 0; i < 31; ++i) { | |
1d8b512b | 5294 | __put_user(env->fir[i], &sc->sc_fpregs[i]); |
6049f4f8 | 5295 | } |
1d8b512b RV |
5296 | __put_user(0, &sc->sc_fpregs[31]); |
5297 | __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr); | |
6049f4f8 | 5298 | |
1d8b512b RV |
5299 | __put_user(0, &sc->sc_traparg_a0); /* FIXME */ |
5300 | __put_user(0, &sc->sc_traparg_a1); /* FIXME */ | |
5301 | __put_user(0, &sc->sc_traparg_a2); /* FIXME */ | |
6049f4f8 RH |
5302 | } |
5303 | ||
016d2e1d | 5304 | static void restore_sigcontext(CPUAlphaState *env, |
05390248 | 5305 | struct target_sigcontext *sc) |
6049f4f8 RH |
5306 | { |
5307 | uint64_t fpcr; | |
016d2e1d | 5308 | int i; |
6049f4f8 | 5309 | |
1d8b512b | 5310 | __get_user(env->pc, &sc->sc_pc); |
6049f4f8 RH |
5311 | |
5312 | for (i = 0; i < 31; ++i) { | |
1d8b512b | 5313 | __get_user(env->ir[i], &sc->sc_regs[i]); |
6049f4f8 RH |
5314 | } |
5315 | for (i = 0; i < 31; ++i) { | |
1d8b512b | 5316 | __get_user(env->fir[i], &sc->sc_fpregs[i]); |
6049f4f8 RH |
5317 | } |
5318 | ||
1d8b512b | 5319 | __get_user(fpcr, &sc->sc_fpcr); |
6049f4f8 | 5320 | cpu_alpha_store_fpcr(env, fpcr); |
6049f4f8 RH |
5321 | } |
5322 | ||
5323 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, | |
05390248 AF |
5324 | CPUAlphaState *env, |
5325 | unsigned long framesize) | |
6049f4f8 RH |
5326 | { |
5327 | abi_ulong sp = env->ir[IR_SP]; | |
5328 | ||
5329 | /* This is the X/Open sanctioned signal stack switching. */ | |
5330 | if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) { | |
5331 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
5332 | } | |
5333 | return (sp - framesize) & -32; | |
5334 | } | |
5335 | ||
5336 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 5337 | target_sigset_t *set, CPUAlphaState *env) |
6049f4f8 RH |
5338 | { |
5339 | abi_ulong frame_addr, r26; | |
5340 | struct target_sigframe *frame; | |
5341 | int err = 0; | |
5342 | ||
5343 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
5344 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
5345 | goto give_sigsegv; | |
5346 | } | |
5347 | ||
41ecc72b | 5348 | setup_sigcontext(&frame->sc, env, frame_addr, set); |
6049f4f8 RH |
5349 | |
5350 | if (ka->sa_restorer) { | |
5351 | r26 = ka->sa_restorer; | |
5352 | } else { | |
1d8b512b RV |
5353 | __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); |
5354 | __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn, | |
5355 | &frame->retcode[1]); | |
5356 | __put_user(INSN_CALLSYS, &frame->retcode[2]); | |
6049f4f8 RH |
5357 | /* imb() */ |
5358 | r26 = frame_addr; | |
5359 | } | |
5360 | ||
5361 | unlock_user_struct(frame, frame_addr, 1); | |
5362 | ||
5363 | if (err) { | |
5364 | give_sigsegv: | |
5365 | if (sig == TARGET_SIGSEGV) { | |
5366 | ka->_sa_handler = TARGET_SIG_DFL; | |
5367 | } | |
5368 | force_sig(TARGET_SIGSEGV); | |
5369 | } | |
5370 | ||
5371 | env->ir[IR_RA] = r26; | |
5372 | env->ir[IR_PV] = env->pc = ka->_sa_handler; | |
5373 | env->ir[IR_A0] = sig; | |
5374 | env->ir[IR_A1] = 0; | |
5375 | env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc); | |
5376 | env->ir[IR_SP] = frame_addr; | |
5377 | } | |
5378 | ||
5379 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
5380 | target_siginfo_t *info, | |
05390248 | 5381 | target_sigset_t *set, CPUAlphaState *env) |
6049f4f8 RH |
5382 | { |
5383 | abi_ulong frame_addr, r26; | |
5384 | struct target_rt_sigframe *frame; | |
5385 | int i, err = 0; | |
5386 | ||
5387 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
5388 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
5389 | goto give_sigsegv; | |
5390 | } | |
5391 | ||
b0fd8d18 | 5392 | copy_siginfo_to_user(&frame->info, info); |
6049f4f8 | 5393 | |
1d8b512b RV |
5394 | __put_user(0, &frame->uc.tuc_flags); |
5395 | __put_user(0, &frame->uc.tuc_link); | |
5396 | __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask); | |
5397 | __put_user(target_sigaltstack_used.ss_sp, | |
5398 | &frame->uc.tuc_stack.ss_sp); | |
5399 | __put_user(sas_ss_flags(env->ir[IR_SP]), | |
5400 | &frame->uc.tuc_stack.ss_flags); | |
5401 | __put_user(target_sigaltstack_used.ss_size, | |
5402 | &frame->uc.tuc_stack.ss_size); | |
41ecc72b | 5403 | setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set); |
6049f4f8 | 5404 | for (i = 0; i < TARGET_NSIG_WORDS; ++i) { |
1d8b512b | 5405 | __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
6049f4f8 RH |
5406 | } |
5407 | ||
5408 | if (ka->sa_restorer) { | |
5409 | r26 = ka->sa_restorer; | |
5410 | } else { | |
1d8b512b RV |
5411 | __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); |
5412 | __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn, | |
5413 | &frame->retcode[1]); | |
5414 | __put_user(INSN_CALLSYS, &frame->retcode[2]); | |
6049f4f8 RH |
5415 | /* imb(); */ |
5416 | r26 = frame_addr; | |
5417 | } | |
5418 | ||
5419 | if (err) { | |
5420 | give_sigsegv: | |
5421 | if (sig == TARGET_SIGSEGV) { | |
5422 | ka->_sa_handler = TARGET_SIG_DFL; | |
5423 | } | |
5424 | force_sig(TARGET_SIGSEGV); | |
5425 | } | |
5426 | ||
5427 | env->ir[IR_RA] = r26; | |
5428 | env->ir[IR_PV] = env->pc = ka->_sa_handler; | |
5429 | env->ir[IR_A0] = sig; | |
5430 | env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info); | |
5431 | env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
5432 | env->ir[IR_SP] = frame_addr; | |
5433 | } | |
5434 | ||
05390248 | 5435 | long do_sigreturn(CPUAlphaState *env) |
6049f4f8 RH |
5436 | { |
5437 | struct target_sigcontext *sc; | |
5438 | abi_ulong sc_addr = env->ir[IR_A0]; | |
5439 | target_sigset_t target_set; | |
5440 | sigset_t set; | |
5441 | ||
5442 | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) { | |
5443 | goto badframe; | |
5444 | } | |
5445 | ||
5446 | target_sigemptyset(&target_set); | |
f5f601af | 5447 | __get_user(target_set.sig[0], &sc->sc_mask); |
6049f4f8 RH |
5448 | |
5449 | target_to_host_sigset_internal(&set, &target_set); | |
1c275925 | 5450 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
6049f4f8 | 5451 | |
016d2e1d | 5452 | restore_sigcontext(env, sc); |
6049f4f8 RH |
5453 | unlock_user_struct(sc, sc_addr, 0); |
5454 | return env->ir[IR_V0]; | |
5455 | ||
5456 | badframe: | |
6049f4f8 RH |
5457 | force_sig(TARGET_SIGSEGV); |
5458 | } | |
5459 | ||
05390248 | 5460 | long do_rt_sigreturn(CPUAlphaState *env) |
6049f4f8 RH |
5461 | { |
5462 | abi_ulong frame_addr = env->ir[IR_A0]; | |
5463 | struct target_rt_sigframe *frame; | |
5464 | sigset_t set; | |
5465 | ||
5466 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
5467 | goto badframe; | |
5468 | } | |
60e99246 | 5469 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
1c275925 | 5470 | do_sigprocmask(SIG_SETMASK, &set, NULL); |
6049f4f8 | 5471 | |
016d2e1d | 5472 | restore_sigcontext(env, &frame->uc.tuc_mcontext); |
6049f4f8 | 5473 | if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe, |
60e99246 | 5474 | uc.tuc_stack), |
6049f4f8 RH |
5475 | 0, env->ir[IR_SP]) == -EFAULT) { |
5476 | goto badframe; | |
5477 | } | |
5478 | ||
5479 | unlock_user_struct(frame, frame_addr, 0); | |
5480 | return env->ir[IR_V0]; | |
5481 | ||
5482 | ||
5483 | badframe: | |
5484 | unlock_user_struct(frame, frame_addr, 0); | |
5485 | force_sig(TARGET_SIGSEGV); | |
5486 | } | |
5487 | ||
b346ff46 FB |
5488 | #else |
5489 | ||
624f7979 | 5490 | static void setup_frame(int sig, struct target_sigaction *ka, |
9349b4f9 | 5491 | target_sigset_t *set, CPUArchState *env) |
b346ff46 FB |
5492 | { |
5493 | fprintf(stderr, "setup_frame: not implemented\n"); | |
5494 | } | |
5495 | ||
624f7979 | 5496 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 5497 | target_siginfo_t *info, |
9349b4f9 | 5498 | target_sigset_t *set, CPUArchState *env) |
b346ff46 FB |
5499 | { |
5500 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
5501 | } | |
5502 | ||
9349b4f9 | 5503 | long do_sigreturn(CPUArchState *env) |
b346ff46 FB |
5504 | { |
5505 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 5506 | return -TARGET_ENOSYS; |
b346ff46 FB |
5507 | } |
5508 | ||
9349b4f9 | 5509 | long do_rt_sigreturn(CPUArchState *env) |
b346ff46 FB |
5510 | { |
5511 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 5512 | return -TARGET_ENOSYS; |
b346ff46 FB |
5513 | } |
5514 | ||
66fb9763 FB |
5515 | #endif |
5516 | ||
9349b4f9 | 5517 | void process_pending_signals(CPUArchState *cpu_env) |
66fb9763 | 5518 | { |
db6b81d4 | 5519 | CPUState *cpu = ENV_GET_CPU(cpu_env); |
66fb9763 | 5520 | int sig; |
992f48a0 | 5521 | abi_ulong handler; |
9de5e440 | 5522 | sigset_t set, old_set; |
c227f099 | 5523 | target_sigset_t target_old_set; |
624f7979 PB |
5524 | struct emulated_sigtable *k; |
5525 | struct target_sigaction *sa; | |
66fb9763 | 5526 | struct sigqueue *q; |
0429a971 | 5527 | TaskState *ts = cpu->opaque; |
3b46e624 | 5528 | |
624f7979 | 5529 | if (!ts->signal_pending) |
31e31b8a FB |
5530 | return; |
5531 | ||
624f7979 PB |
5532 | /* FIXME: This is not threadsafe. */ |
5533 | k = ts->sigtab; | |
66fb9763 FB |
5534 | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
5535 | if (k->pending) | |
31e31b8a | 5536 | goto handle_signal; |
66fb9763 | 5537 | k++; |
31e31b8a FB |
5538 | } |
5539 | /* if no signal is pending, just return */ | |
624f7979 | 5540 | ts->signal_pending = 0; |
31e31b8a | 5541 | return; |
66fb9763 | 5542 | |
31e31b8a | 5543 | handle_signal: |
66fb9763 | 5544 | #ifdef DEBUG_SIGNAL |
bc8a22cc | 5545 | fprintf(stderr, "qemu: process signal %d\n", sig); |
66fb9763 FB |
5546 | #endif |
5547 | /* dequeue signal */ | |
5548 | q = k->first; | |
5549 | k->first = q->next; | |
5550 | if (!k->first) | |
5551 | k->pending = 0; | |
3b46e624 | 5552 | |
db6b81d4 | 5553 | sig = gdb_handlesig(cpu, sig); |
1fddef4b | 5554 | if (!sig) { |
ca587a8e AJ |
5555 | sa = NULL; |
5556 | handler = TARGET_SIG_IGN; | |
5557 | } else { | |
5558 | sa = &sigact_table[sig - 1]; | |
5559 | handler = sa->_sa_handler; | |
1fddef4b | 5560 | } |
66fb9763 | 5561 | |
a7ec0f98 PM |
5562 | if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) { |
5563 | /* Guest has blocked SIGSEGV but we got one anyway. Assume this | |
5564 | * is a forced SIGSEGV (ie one the kernel handles via force_sig_info | |
5565 | * because it got a real MMU fault), and treat as if default handler. | |
5566 | */ | |
5567 | handler = TARGET_SIG_DFL; | |
5568 | } | |
5569 | ||
66fb9763 | 5570 | if (handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
5571 | /* default handler : ignore some signal. The other are job control or fatal */ |
5572 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { | |
5573 | kill(getpid(),SIGSTOP); | |
5574 | } else if (sig != TARGET_SIGCHLD && | |
5575 | sig != TARGET_SIGURG && | |
5576 | sig != TARGET_SIGWINCH && | |
5577 | sig != TARGET_SIGCONT) { | |
66fb9763 FB |
5578 | force_sig(sig); |
5579 | } | |
5580 | } else if (handler == TARGET_SIG_IGN) { | |
5581 | /* ignore sig */ | |
5582 | } else if (handler == TARGET_SIG_ERR) { | |
5583 | force_sig(sig); | |
5584 | } else { | |
9de5e440 | 5585 | /* compute the blocked signals during the handler execution */ |
624f7979 | 5586 | target_to_host_sigset(&set, &sa->sa_mask); |
9de5e440 FB |
5587 | /* SA_NODEFER indicates that the current signal should not be |
5588 | blocked during the handler */ | |
624f7979 | 5589 | if (!(sa->sa_flags & TARGET_SA_NODEFER)) |
9de5e440 | 5590 | sigaddset(&set, target_to_host_signal(sig)); |
3b46e624 | 5591 | |
9de5e440 | 5592 | /* block signals in the handler using Linux */ |
1c275925 | 5593 | do_sigprocmask(SIG_BLOCK, &set, &old_set); |
9de5e440 FB |
5594 | /* save the previous blocked signal state to restore it at the |
5595 | end of the signal execution (see do_sigreturn) */ | |
9231944d | 5596 | host_to_target_sigset_internal(&target_old_set, &old_set); |
9de5e440 | 5597 | |
bc8a22cc | 5598 | /* if the CPU is in VM86 mode, we restore the 32 bit values */ |
84409ddb | 5599 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
bc8a22cc FB |
5600 | { |
5601 | CPUX86State *env = cpu_env; | |
5602 | if (env->eflags & VM_MASK) | |
5603 | save_v86_state(env); | |
5604 | } | |
5605 | #endif | |
9de5e440 | 5606 | /* prepare the stack frame of the virtual CPU */ |
ff970904 RH |
5607 | #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64) |
5608 | /* These targets do not have traditional signals. */ | |
5609 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
5610 | #else | |
624f7979 PB |
5611 | if (sa->sa_flags & TARGET_SA_SIGINFO) |
5612 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
66fb9763 | 5613 | else |
624f7979 | 5614 | setup_frame(sig, sa, &target_old_set, cpu_env); |
ff970904 | 5615 | #endif |
624f7979 PB |
5616 | if (sa->sa_flags & TARGET_SA_RESETHAND) |
5617 | sa->_sa_handler = TARGET_SIG_DFL; | |
31e31b8a | 5618 | } |
66fb9763 | 5619 | if (q != &k->info) |
624f7979 | 5620 | free_sigqueue(cpu_env, q); |
66fb9763 | 5621 | } |