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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 | ||
9de5e440 FB |
200 | /* siginfo conversion */ |
201 | ||
c227f099 | 202 | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
9de5e440 | 203 | const siginfo_t *info) |
66fb9763 | 204 | { |
a05c6409 | 205 | int sig = host_to_target_signal(info->si_signo); |
9de5e440 FB |
206 | tinfo->si_signo = sig; |
207 | tinfo->si_errno = 0; | |
afd7cd92 | 208 | tinfo->si_code = info->si_code; |
a05c6409 RH |
209 | |
210 | if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV | |
211 | || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) { | |
212 | /* Should never come here, but who knows. The information for | |
213 | the target is irrelevant. */ | |
9de5e440 | 214 | tinfo->_sifields._sigfault._addr = 0; |
a05c6409 RH |
215 | } else if (sig == TARGET_SIGIO) { |
216 | tinfo->_sifields._sigpoll._band = info->si_band; | |
7f7f7c84 | 217 | tinfo->_sifields._sigpoll._fd = info->si_fd; |
a05c6409 RH |
218 | } else if (sig == TARGET_SIGCHLD) { |
219 | tinfo->_sifields._sigchld._pid = info->si_pid; | |
220 | tinfo->_sifields._sigchld._uid = info->si_uid; | |
221 | tinfo->_sifields._sigchld._status | |
222 | = host_to_target_waitstatus(info->si_status); | |
223 | tinfo->_sifields._sigchld._utime = info->si_utime; | |
224 | tinfo->_sifields._sigchld._stime = info->si_stime; | |
9de5e440 FB |
225 | } else if (sig >= TARGET_SIGRTMIN) { |
226 | tinfo->_sifields._rt._pid = info->si_pid; | |
227 | tinfo->_sifields._rt._uid = info->si_uid; | |
228 | /* XXX: potential problem if 64 bit */ | |
a05c6409 RH |
229 | tinfo->_sifields._rt._sigval.sival_ptr |
230 | = (abi_ulong)(unsigned long)info->si_value.sival_ptr; | |
9de5e440 FB |
231 | } |
232 | } | |
233 | ||
c227f099 AL |
234 | static void tswap_siginfo(target_siginfo_t *tinfo, |
235 | const target_siginfo_t *info) | |
9de5e440 | 236 | { |
a05c6409 | 237 | int sig = info->si_signo; |
9de5e440 | 238 | tinfo->si_signo = tswap32(sig); |
66fb9763 FB |
239 | tinfo->si_errno = tswap32(info->si_errno); |
240 | tinfo->si_code = tswap32(info->si_code); | |
a05c6409 RH |
241 | |
242 | if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV | |
243 | || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) { | |
244 | tinfo->_sifields._sigfault._addr | |
245 | = tswapal(info->_sifields._sigfault._addr); | |
246 | } else if (sig == TARGET_SIGIO) { | |
247 | tinfo->_sifields._sigpoll._band | |
248 | = tswap32(info->_sifields._sigpoll._band); | |
249 | tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd); | |
250 | } else if (sig == TARGET_SIGCHLD) { | |
251 | tinfo->_sifields._sigchld._pid | |
252 | = tswap32(info->_sifields._sigchld._pid); | |
253 | tinfo->_sifields._sigchld._uid | |
254 | = tswap32(info->_sifields._sigchld._uid); | |
255 | tinfo->_sifields._sigchld._status | |
256 | = tswap32(info->_sifields._sigchld._status); | |
257 | tinfo->_sifields._sigchld._utime | |
258 | = tswapal(info->_sifields._sigchld._utime); | |
259 | tinfo->_sifields._sigchld._stime | |
260 | = tswapal(info->_sifields._sigchld._stime); | |
9de5e440 FB |
261 | } else if (sig >= TARGET_SIGRTMIN) { |
262 | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); | |
263 | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); | |
a05c6409 RH |
264 | tinfo->_sifields._rt._sigval.sival_ptr |
265 | = tswapal(info->_sifields._rt._sigval.sival_ptr); | |
9de5e440 FB |
266 | } |
267 | } | |
268 | ||
269 | ||
c227f099 | 270 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) |
9de5e440 FB |
271 | { |
272 | host_to_target_siginfo_noswap(tinfo, info); | |
273 | tswap_siginfo(tinfo, tinfo); | |
66fb9763 FB |
274 | } |
275 | ||
9de5e440 | 276 | /* XXX: we support only POSIX RT signals are used. */ |
aa1f17c1 | 277 | /* XXX: find a solution for 64 bit (additional malloced data is needed) */ |
c227f099 | 278 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
66fb9763 FB |
279 | { |
280 | info->si_signo = tswap32(tinfo->si_signo); | |
281 | info->si_errno = tswap32(tinfo->si_errno); | |
282 | info->si_code = tswap32(tinfo->si_code); | |
9de5e440 FB |
283 | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
284 | info->si_uid = tswap32(tinfo->_sifields._rt._uid); | |
5fafdf24 | 285 | info->si_value.sival_ptr = |
cbb21eed | 286 | (void *)(long)tswapal(tinfo->_sifields._rt._sigval.sival_ptr); |
66fb9763 FB |
287 | } |
288 | ||
ca587a8e AJ |
289 | static int fatal_signal (int sig) |
290 | { | |
291 | switch (sig) { | |
292 | case TARGET_SIGCHLD: | |
293 | case TARGET_SIGURG: | |
294 | case TARGET_SIGWINCH: | |
295 | /* Ignored by default. */ | |
296 | return 0; | |
297 | case TARGET_SIGCONT: | |
298 | case TARGET_SIGSTOP: | |
299 | case TARGET_SIGTSTP: | |
300 | case TARGET_SIGTTIN: | |
301 | case TARGET_SIGTTOU: | |
302 | /* Job control signals. */ | |
303 | return 0; | |
304 | default: | |
305 | return 1; | |
306 | } | |
307 | } | |
308 | ||
edf8e2af MW |
309 | /* returns 1 if given signal should dump core if not handled */ |
310 | static int core_dump_signal(int sig) | |
311 | { | |
312 | switch (sig) { | |
313 | case TARGET_SIGABRT: | |
314 | case TARGET_SIGFPE: | |
315 | case TARGET_SIGILL: | |
316 | case TARGET_SIGQUIT: | |
317 | case TARGET_SIGSEGV: | |
318 | case TARGET_SIGTRAP: | |
319 | case TARGET_SIGBUS: | |
320 | return (1); | |
321 | default: | |
322 | return (0); | |
323 | } | |
324 | } | |
325 | ||
31e31b8a FB |
326 | void signal_init(void) |
327 | { | |
328 | struct sigaction act; | |
624f7979 | 329 | struct sigaction oact; |
9e5f5284 | 330 | int i, j; |
624f7979 | 331 | int host_sig; |
31e31b8a | 332 | |
9e5f5284 | 333 | /* generate signal conversion tables */ |
3ca05588 | 334 | for(i = 1; i < _NSIG; i++) { |
9e5f5284 FB |
335 | if (host_to_target_signal_table[i] == 0) |
336 | host_to_target_signal_table[i] = i; | |
337 | } | |
3ca05588 | 338 | for(i = 1; i < _NSIG; i++) { |
9e5f5284 FB |
339 | j = host_to_target_signal_table[i]; |
340 | target_to_host_signal_table[j] = i; | |
341 | } | |
3b46e624 | 342 | |
9de5e440 FB |
343 | /* set all host signal handlers. ALL signals are blocked during |
344 | the handlers to serialize them. */ | |
624f7979 PB |
345 | memset(sigact_table, 0, sizeof(sigact_table)); |
346 | ||
9de5e440 | 347 | sigfillset(&act.sa_mask); |
31e31b8a FB |
348 | act.sa_flags = SA_SIGINFO; |
349 | act.sa_sigaction = host_signal_handler; | |
624f7979 PB |
350 | for(i = 1; i <= TARGET_NSIG; i++) { |
351 | host_sig = target_to_host_signal(i); | |
352 | sigaction(host_sig, NULL, &oact); | |
353 | if (oact.sa_sigaction == (void *)SIG_IGN) { | |
354 | sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN; | |
355 | } else if (oact.sa_sigaction == (void *)SIG_DFL) { | |
356 | sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL; | |
357 | } | |
358 | /* If there's already a handler installed then something has | |
359 | gone horribly wrong, so don't even try to handle that case. */ | |
ca587a8e AJ |
360 | /* Install some handlers for our own use. We need at least |
361 | SIGSEGV and SIGBUS, to detect exceptions. We can not just | |
362 | trap all signals because it affects syscall interrupt | |
363 | behavior. But do trap all default-fatal signals. */ | |
364 | if (fatal_signal (i)) | |
624f7979 | 365 | sigaction(host_sig, &act, NULL); |
31e31b8a | 366 | } |
66fb9763 FB |
367 | } |
368 | ||
369 | /* signal queue handling */ | |
370 | ||
9349b4f9 | 371 | static inline struct sigqueue *alloc_sigqueue(CPUArchState *env) |
66fb9763 | 372 | { |
624f7979 PB |
373 | TaskState *ts = env->opaque; |
374 | struct sigqueue *q = ts->first_free; | |
66fb9763 FB |
375 | if (!q) |
376 | return NULL; | |
624f7979 | 377 | ts->first_free = q->next; |
66fb9763 | 378 | return q; |
31e31b8a FB |
379 | } |
380 | ||
9349b4f9 | 381 | static inline void free_sigqueue(CPUArchState *env, struct sigqueue *q) |
66fb9763 | 382 | { |
624f7979 PB |
383 | TaskState *ts = env->opaque; |
384 | q->next = ts->first_free; | |
385 | ts->first_free = q; | |
66fb9763 FB |
386 | } |
387 | ||
9de5e440 | 388 | /* abort execution with signal */ |
66393fb9 | 389 | static void QEMU_NORETURN force_sig(int target_sig) |
66fb9763 | 390 | { |
a2247f8e AF |
391 | CPUArchState *env = thread_cpu->env_ptr; |
392 | TaskState *ts = (TaskState *)env->opaque; | |
edf8e2af | 393 | int host_sig, core_dumped = 0; |
603e4fd7 | 394 | struct sigaction act; |
66393fb9 | 395 | host_sig = target_to_host_signal(target_sig); |
a2247f8e | 396 | gdb_signalled(env, target_sig); |
603e4fd7 | 397 | |
edf8e2af | 398 | /* dump core if supported by target binary format */ |
66393fb9 | 399 | if (core_dump_signal(target_sig) && (ts->bprm->core_dump != NULL)) { |
edf8e2af MW |
400 | stop_all_tasks(); |
401 | core_dumped = | |
a2247f8e | 402 | ((*ts->bprm->core_dump)(target_sig, env) == 0); |
edf8e2af MW |
403 | } |
404 | if (core_dumped) { | |
405 | /* we already dumped the core of target process, we don't want | |
406 | * a coredump of qemu itself */ | |
407 | struct rlimit nodump; | |
408 | getrlimit(RLIMIT_CORE, &nodump); | |
409 | nodump.rlim_cur=0; | |
410 | setrlimit(RLIMIT_CORE, &nodump); | |
411 | (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n", | |
66393fb9 | 412 | target_sig, strsignal(host_sig), "core dumped" ); |
edf8e2af MW |
413 | } |
414 | ||
0c58751c | 415 | /* The proper exit code for dying from an uncaught signal is |
603e4fd7 AJ |
416 | * -<signal>. The kernel doesn't allow exit() or _exit() to pass |
417 | * a negative value. To get the proper exit code we need to | |
418 | * actually die from an uncaught signal. Here the default signal | |
419 | * handler is installed, we send ourself a signal and we wait for | |
420 | * it to arrive. */ | |
421 | sigfillset(&act.sa_mask); | |
422 | act.sa_handler = SIG_DFL; | |
423 | sigaction(host_sig, &act, NULL); | |
424 | ||
425 | /* For some reason raise(host_sig) doesn't send the signal when | |
426 | * statically linked on x86-64. */ | |
427 | kill(getpid(), host_sig); | |
428 | ||
429 | /* Make sure the signal isn't masked (just reuse the mask inside | |
430 | of act) */ | |
431 | sigdelset(&act.sa_mask, host_sig); | |
432 | sigsuspend(&act.sa_mask); | |
433 | ||
434 | /* unreachable */ | |
a6c6f76c | 435 | abort(); |
66fb9763 FB |
436 | } |
437 | ||
9de5e440 FB |
438 | /* queue a signal so that it will be send to the virtual CPU as soon |
439 | as possible */ | |
9349b4f9 | 440 | int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info) |
31e31b8a | 441 | { |
624f7979 PB |
442 | TaskState *ts = env->opaque; |
443 | struct emulated_sigtable *k; | |
9de5e440 | 444 | struct sigqueue *q, **pq; |
992f48a0 | 445 | abi_ulong handler; |
ca587a8e | 446 | int queue; |
66fb9763 | 447 | |
9de5e440 | 448 | #if defined(DEBUG_SIGNAL) |
5fafdf24 | 449 | fprintf(stderr, "queue_signal: sig=%d\n", |
9de5e440 | 450 | sig); |
66fb9763 | 451 | #endif |
624f7979 | 452 | k = &ts->sigtab[sig - 1]; |
ca587a8e | 453 | queue = gdb_queuesig (); |
624f7979 | 454 | handler = sigact_table[sig - 1]._sa_handler; |
ca587a8e | 455 | if (!queue && handler == TARGET_SIG_DFL) { |
60b19691 TS |
456 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { |
457 | kill(getpid(),SIGSTOP); | |
458 | return 0; | |
459 | } else | |
66fb9763 | 460 | /* default handler : ignore some signal. The other are fatal */ |
5fafdf24 TS |
461 | if (sig != TARGET_SIGCHLD && |
462 | sig != TARGET_SIGURG && | |
60b19691 TS |
463 | sig != TARGET_SIGWINCH && |
464 | sig != TARGET_SIGCONT) { | |
66fb9763 | 465 | force_sig(sig); |
9de5e440 FB |
466 | } else { |
467 | return 0; /* indicate ignored */ | |
66fb9763 | 468 | } |
ca587a8e | 469 | } else if (!queue && handler == TARGET_SIG_IGN) { |
66fb9763 | 470 | /* ignore signal */ |
9de5e440 | 471 | return 0; |
ca587a8e | 472 | } else if (!queue && handler == TARGET_SIG_ERR) { |
66fb9763 FB |
473 | force_sig(sig); |
474 | } else { | |
9de5e440 FB |
475 | pq = &k->first; |
476 | if (sig < TARGET_SIGRTMIN) { | |
477 | /* if non real time signal, we queue exactly one signal */ | |
478 | if (!k->pending) | |
479 | q = &k->info; | |
480 | else | |
481 | return 0; | |
482 | } else { | |
483 | if (!k->pending) { | |
484 | /* first signal */ | |
485 | q = &k->info; | |
486 | } else { | |
624f7979 | 487 | q = alloc_sigqueue(env); |
9de5e440 FB |
488 | if (!q) |
489 | return -EAGAIN; | |
490 | while (*pq != NULL) | |
491 | pq = &(*pq)->next; | |
492 | } | |
493 | } | |
494 | *pq = q; | |
495 | q->info = *info; | |
496 | q->next = NULL; | |
497 | k->pending = 1; | |
498 | /* signal that a new signal is pending */ | |
624f7979 | 499 | ts->signal_pending = 1; |
9de5e440 FB |
500 | return 1; /* indicates that the signal was queued */ |
501 | } | |
502 | } | |
503 | ||
5fafdf24 | 504 | static void host_signal_handler(int host_signum, siginfo_t *info, |
9de5e440 FB |
505 | void *puc) |
506 | { | |
a2247f8e | 507 | CPUArchState *env = thread_cpu->env_ptr; |
9de5e440 | 508 | int sig; |
c227f099 | 509 | target_siginfo_t tinfo; |
9de5e440 FB |
510 | |
511 | /* the CPU emulator uses some host signals to detect exceptions, | |
eaa449b9 | 512 | we forward to it some signals */ |
ca587a8e | 513 | if ((host_signum == SIGSEGV || host_signum == SIGBUS) |
eaa449b9 | 514 | && info->si_code > 0) { |
b346ff46 | 515 | if (cpu_signal_handler(host_signum, info, puc)) |
9de5e440 FB |
516 | return; |
517 | } | |
518 | ||
519 | /* get target signal number */ | |
520 | sig = host_to_target_signal(host_signum); | |
521 | if (sig < 1 || sig > TARGET_NSIG) | |
522 | return; | |
523 | #if defined(DEBUG_SIGNAL) | |
bc8a22cc | 524 | fprintf(stderr, "qemu: got signal %d\n", sig); |
9de5e440 FB |
525 | #endif |
526 | host_to_target_siginfo_noswap(&tinfo, info); | |
a2247f8e | 527 | if (queue_signal(env, sig, &tinfo) == 1) { |
9de5e440 | 528 | /* interrupt the virtual CPU as soon as possible */ |
a2247f8e | 529 | cpu_exit(thread_cpu); |
66fb9763 FB |
530 | } |
531 | } | |
532 | ||
0da46a6e | 533 | /* do_sigaltstack() returns target values and errnos. */ |
579a97f7 FB |
534 | /* compare linux/kernel/signal.c:do_sigaltstack() */ |
535 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) | |
a04e134a TS |
536 | { |
537 | int ret; | |
538 | struct target_sigaltstack oss; | |
539 | ||
540 | /* XXX: test errors */ | |
579a97f7 | 541 | if(uoss_addr) |
a04e134a TS |
542 | { |
543 | __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp); | |
544 | __put_user(target_sigaltstack_used.ss_size, &oss.ss_size); | |
545 | __put_user(sas_ss_flags(sp), &oss.ss_flags); | |
546 | } | |
547 | ||
579a97f7 | 548 | if(uss_addr) |
a04e134a | 549 | { |
579a97f7 FB |
550 | struct target_sigaltstack *uss; |
551 | struct target_sigaltstack ss; | |
a04e134a | 552 | |
0da46a6e | 553 | ret = -TARGET_EFAULT; |
579a97f7 | 554 | if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1) |
a04e134a TS |
555 | || __get_user(ss.ss_sp, &uss->ss_sp) |
556 | || __get_user(ss.ss_size, &uss->ss_size) | |
557 | || __get_user(ss.ss_flags, &uss->ss_flags)) | |
558 | goto out; | |
579a97f7 | 559 | unlock_user_struct(uss, uss_addr, 0); |
a04e134a | 560 | |
0da46a6e | 561 | ret = -TARGET_EPERM; |
a04e134a TS |
562 | if (on_sig_stack(sp)) |
563 | goto out; | |
564 | ||
0da46a6e | 565 | ret = -TARGET_EINVAL; |
a04e134a TS |
566 | if (ss.ss_flags != TARGET_SS_DISABLE |
567 | && ss.ss_flags != TARGET_SS_ONSTACK | |
568 | && ss.ss_flags != 0) | |
569 | goto out; | |
570 | ||
571 | if (ss.ss_flags == TARGET_SS_DISABLE) { | |
572 | ss.ss_size = 0; | |
573 | ss.ss_sp = 0; | |
574 | } else { | |
0da46a6e | 575 | ret = -TARGET_ENOMEM; |
a04e134a TS |
576 | if (ss.ss_size < MINSIGSTKSZ) |
577 | goto out; | |
578 | } | |
579 | ||
580 | target_sigaltstack_used.ss_sp = ss.ss_sp; | |
581 | target_sigaltstack_used.ss_size = ss.ss_size; | |
582 | } | |
583 | ||
579a97f7 | 584 | if (uoss_addr) { |
0da46a6e | 585 | ret = -TARGET_EFAULT; |
579a97f7 | 586 | if (copy_to_user(uoss_addr, &oss, sizeof(oss))) |
a04e134a | 587 | goto out; |
a04e134a TS |
588 | } |
589 | ||
590 | ret = 0; | |
591 | out: | |
592 | return ret; | |
593 | } | |
594 | ||
0da46a6e | 595 | /* do_sigaction() return host values and errnos */ |
66fb9763 FB |
596 | int do_sigaction(int sig, const struct target_sigaction *act, |
597 | struct target_sigaction *oact) | |
598 | { | |
624f7979 | 599 | struct target_sigaction *k; |
773b93ee FB |
600 | struct sigaction act1; |
601 | int host_sig; | |
0da46a6e | 602 | int ret = 0; |
66fb9763 | 603 | |
2a913eb1 | 604 | if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP) |
66fb9763 FB |
605 | return -EINVAL; |
606 | k = &sigact_table[sig - 1]; | |
773b93ee | 607 | #if defined(DEBUG_SIGNAL) |
0bf9e31a BS |
608 | fprintf(stderr, "sigaction sig=%d act=0x%p, oact=0x%p\n", |
609 | sig, act, oact); | |
66fb9763 FB |
610 | #endif |
611 | if (oact) { | |
d2565875 RH |
612 | __put_user(k->_sa_handler, &oact->_sa_handler); |
613 | __put_user(k->sa_flags, &oact->sa_flags); | |
388bb21a | 614 | #if !defined(TARGET_MIPS) |
d2565875 | 615 | __put_user(k->sa_restorer, &oact->sa_restorer); |
388bb21a | 616 | #endif |
d2565875 | 617 | /* Not swapped. */ |
624f7979 | 618 | oact->sa_mask = k->sa_mask; |
66fb9763 FB |
619 | } |
620 | if (act) { | |
624f7979 | 621 | /* FIXME: This is not threadsafe. */ |
d2565875 RH |
622 | __get_user(k->_sa_handler, &act->_sa_handler); |
623 | __get_user(k->sa_flags, &act->sa_flags); | |
388bb21a | 624 | #if !defined(TARGET_MIPS) |
d2565875 | 625 | __get_user(k->sa_restorer, &act->sa_restorer); |
388bb21a | 626 | #endif |
d2565875 | 627 | /* To be swapped in target_to_host_sigset. */ |
624f7979 | 628 | k->sa_mask = act->sa_mask; |
773b93ee FB |
629 | |
630 | /* we update the host linux signal state */ | |
631 | host_sig = target_to_host_signal(sig); | |
632 | if (host_sig != SIGSEGV && host_sig != SIGBUS) { | |
633 | sigfillset(&act1.sa_mask); | |
634 | act1.sa_flags = SA_SIGINFO; | |
624f7979 | 635 | if (k->sa_flags & TARGET_SA_RESTART) |
773b93ee FB |
636 | act1.sa_flags |= SA_RESTART; |
637 | /* NOTE: it is important to update the host kernel signal | |
638 | ignore state to avoid getting unexpected interrupted | |
639 | syscalls */ | |
624f7979 | 640 | if (k->_sa_handler == TARGET_SIG_IGN) { |
773b93ee | 641 | act1.sa_sigaction = (void *)SIG_IGN; |
624f7979 | 642 | } else if (k->_sa_handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
643 | if (fatal_signal (sig)) |
644 | act1.sa_sigaction = host_signal_handler; | |
645 | else | |
646 | act1.sa_sigaction = (void *)SIG_DFL; | |
773b93ee FB |
647 | } else { |
648 | act1.sa_sigaction = host_signal_handler; | |
649 | } | |
0da46a6e | 650 | ret = sigaction(host_sig, &act1, NULL); |
773b93ee | 651 | } |
66fb9763 | 652 | } |
0da46a6e | 653 | return ret; |
66fb9763 FB |
654 | } |
655 | ||
c227f099 AL |
656 | static inline int copy_siginfo_to_user(target_siginfo_t *tinfo, |
657 | const target_siginfo_t *info) | |
43fff238 FB |
658 | { |
659 | tswap_siginfo(tinfo, info); | |
660 | return 0; | |
661 | } | |
662 | ||
c3b5bc8a TS |
663 | static inline int current_exec_domain_sig(int sig) |
664 | { | |
665 | return /* current->exec_domain && current->exec_domain->signal_invmap | |
666 | && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig; | |
667 | } | |
668 | ||
459a4017 | 669 | #if defined(TARGET_I386) && TARGET_ABI_BITS == 32 |
66fb9763 FB |
670 | |
671 | /* from the Linux kernel */ | |
672 | ||
673 | struct target_fpreg { | |
674 | uint16_t significand[4]; | |
675 | uint16_t exponent; | |
676 | }; | |
677 | ||
678 | struct target_fpxreg { | |
679 | uint16_t significand[4]; | |
680 | uint16_t exponent; | |
681 | uint16_t padding[3]; | |
682 | }; | |
683 | ||
684 | struct target_xmmreg { | |
992f48a0 | 685 | abi_ulong element[4]; |
66fb9763 FB |
686 | }; |
687 | ||
688 | struct target_fpstate { | |
689 | /* Regular FPU environment */ | |
992f48a0 BS |
690 | abi_ulong cw; |
691 | abi_ulong sw; | |
692 | abi_ulong tag; | |
693 | abi_ulong ipoff; | |
694 | abi_ulong cssel; | |
695 | abi_ulong dataoff; | |
696 | abi_ulong datasel; | |
66fb9763 FB |
697 | struct target_fpreg _st[8]; |
698 | uint16_t status; | |
699 | uint16_t magic; /* 0xffff = regular FPU data only */ | |
700 | ||
701 | /* FXSR FPU environment */ | |
992f48a0 BS |
702 | abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
703 | abi_ulong mxcsr; | |
704 | abi_ulong reserved; | |
66fb9763 FB |
705 | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
706 | struct target_xmmreg _xmm[8]; | |
992f48a0 | 707 | abi_ulong padding[56]; |
66fb9763 FB |
708 | }; |
709 | ||
710 | #define X86_FXSR_MAGIC 0x0000 | |
711 | ||
712 | struct target_sigcontext { | |
713 | uint16_t gs, __gsh; | |
714 | uint16_t fs, __fsh; | |
715 | uint16_t es, __esh; | |
716 | uint16_t ds, __dsh; | |
992f48a0 BS |
717 | abi_ulong edi; |
718 | abi_ulong esi; | |
719 | abi_ulong ebp; | |
720 | abi_ulong esp; | |
721 | abi_ulong ebx; | |
722 | abi_ulong edx; | |
723 | abi_ulong ecx; | |
724 | abi_ulong eax; | |
725 | abi_ulong trapno; | |
726 | abi_ulong err; | |
727 | abi_ulong eip; | |
66fb9763 | 728 | uint16_t cs, __csh; |
992f48a0 BS |
729 | abi_ulong eflags; |
730 | abi_ulong esp_at_signal; | |
66fb9763 | 731 | uint16_t ss, __ssh; |
992f48a0 BS |
732 | abi_ulong fpstate; /* pointer */ |
733 | abi_ulong oldmask; | |
734 | abi_ulong cr2; | |
66fb9763 FB |
735 | }; |
736 | ||
66fb9763 | 737 | struct target_ucontext { |
992f48a0 BS |
738 | abi_ulong tuc_flags; |
739 | abi_ulong tuc_link; | |
c227f099 | 740 | target_stack_t tuc_stack; |
b8076a74 | 741 | struct target_sigcontext tuc_mcontext; |
c227f099 | 742 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
66fb9763 FB |
743 | }; |
744 | ||
745 | struct sigframe | |
746 | { | |
992f48a0 | 747 | abi_ulong pretcode; |
66fb9763 FB |
748 | int sig; |
749 | struct target_sigcontext sc; | |
750 | struct target_fpstate fpstate; | |
992f48a0 | 751 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
66fb9763 FB |
752 | char retcode[8]; |
753 | }; | |
754 | ||
755 | struct rt_sigframe | |
756 | { | |
992f48a0 | 757 | abi_ulong pretcode; |
66fb9763 | 758 | int sig; |
992f48a0 BS |
759 | abi_ulong pinfo; |
760 | abi_ulong puc; | |
66fb9763 FB |
761 | struct target_siginfo info; |
762 | struct target_ucontext uc; | |
763 | struct target_fpstate fpstate; | |
764 | char retcode[8]; | |
765 | }; | |
766 | ||
767 | /* | |
768 | * Set up a signal frame. | |
769 | */ | |
770 | ||
66fb9763 FB |
771 | /* XXX: save x87 state */ |
772 | static int | |
773 | setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate, | |
28be6234 | 774 | CPUX86State *env, abi_ulong mask, abi_ulong fpstate_addr) |
66fb9763 FB |
775 | { |
776 | int err = 0; | |
775b58d8 | 777 | uint16_t magic; |
66fb9763 | 778 | |
579a97f7 | 779 | /* already locked in setup_frame() */ |
a52c757c FB |
780 | err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
781 | err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); | |
782 | err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); | |
783 | err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); | |
66fb9763 FB |
784 | err |= __put_user(env->regs[R_EDI], &sc->edi); |
785 | err |= __put_user(env->regs[R_ESI], &sc->esi); | |
786 | err |= __put_user(env->regs[R_EBP], &sc->ebp); | |
787 | err |= __put_user(env->regs[R_ESP], &sc->esp); | |
788 | err |= __put_user(env->regs[R_EBX], &sc->ebx); | |
789 | err |= __put_user(env->regs[R_EDX], &sc->edx); | |
790 | err |= __put_user(env->regs[R_ECX], &sc->ecx); | |
791 | err |= __put_user(env->regs[R_EAX], &sc->eax); | |
66099dd9 FB |
792 | err |= __put_user(env->exception_index, &sc->trapno); |
793 | err |= __put_user(env->error_code, &sc->err); | |
66fb9763 | 794 | err |= __put_user(env->eip, &sc->eip); |
a52c757c | 795 | err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); |
66fb9763 FB |
796 | err |= __put_user(env->eflags, &sc->eflags); |
797 | err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal); | |
a52c757c | 798 | err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); |
ed2dcdf6 | 799 | |
28be6234 | 800 | cpu_x86_fsave(env, fpstate_addr, 1); |
ed2dcdf6 | 801 | fpstate->status = fpstate->sw; |
775b58d8 FB |
802 | magic = 0xffff; |
803 | err |= __put_user(magic, &fpstate->magic); | |
28be6234 | 804 | err |= __put_user(fpstate_addr, &sc->fpstate); |
ed2dcdf6 | 805 | |
66fb9763 FB |
806 | /* non-iBCS2 extensions.. */ |
807 | err |= __put_user(mask, &sc->oldmask); | |
a52c757c | 808 | err |= __put_user(env->cr[2], &sc->cr2); |
66fb9763 | 809 | return err; |
31e31b8a FB |
810 | } |
811 | ||
66fb9763 FB |
812 | /* |
813 | * Determine which stack to use.. | |
814 | */ | |
31e31b8a | 815 | |
579a97f7 | 816 | static inline abi_ulong |
624f7979 | 817 | get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size) |
31e31b8a | 818 | { |
66fb9763 FB |
819 | unsigned long esp; |
820 | ||
821 | /* Default to using normal stack */ | |
822 | esp = env->regs[R_ESP]; | |
66fb9763 | 823 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 824 | if (ka->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
825 | if (sas_ss_flags(esp) == 0) |
826 | esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
827 | } | |
66fb9763 FB |
828 | |
829 | /* This is the legacy signal stack switching. */ | |
5fafdf24 | 830 | else |
a52c757c | 831 | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
624f7979 PB |
832 | !(ka->sa_flags & TARGET_SA_RESTORER) && |
833 | ka->sa_restorer) { | |
834 | esp = (unsigned long) ka->sa_restorer; | |
a52c757c | 835 | } |
579a97f7 | 836 | return (esp - frame_size) & -8ul; |
66fb9763 FB |
837 | } |
838 | ||
579a97f7 | 839 | /* compare linux/arch/i386/kernel/signal.c:setup_frame() */ |
624f7979 | 840 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 841 | target_sigset_t *set, CPUX86State *env) |
66fb9763 | 842 | { |
579a97f7 | 843 | abi_ulong frame_addr; |
66fb9763 | 844 | struct sigframe *frame; |
9231944d | 845 | int i, err = 0; |
66fb9763 | 846 | |
579a97f7 | 847 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 848 | |
579a97f7 | 849 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 850 | goto give_sigsegv; |
579a97f7 | 851 | |
c3b5bc8a | 852 | err |= __put_user(current_exec_domain_sig(sig), |
66fb9763 FB |
853 | &frame->sig); |
854 | if (err) | |
855 | goto give_sigsegv; | |
856 | ||
28be6234 FB |
857 | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0], |
858 | frame_addr + offsetof(struct sigframe, fpstate)); | |
66fb9763 FB |
859 | if (err) |
860 | goto give_sigsegv; | |
861 | ||
9231944d FB |
862 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
863 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
864 | goto give_sigsegv; | |
865 | } | |
66fb9763 FB |
866 | |
867 | /* Set up to return from userspace. If provided, use a stub | |
868 | already in userspace. */ | |
624f7979 PB |
869 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
870 | err |= __put_user(ka->sa_restorer, &frame->pretcode); | |
66fb9763 | 871 | } else { |
775b58d8 | 872 | uint16_t val16; |
28be6234 FB |
873 | abi_ulong retcode_addr; |
874 | retcode_addr = frame_addr + offsetof(struct sigframe, retcode); | |
875 | err |= __put_user(retcode_addr, &frame->pretcode); | |
66fb9763 | 876 | /* This is popl %eax ; movl $,%eax ; int $0x80 */ |
775b58d8 FB |
877 | val16 = 0xb858; |
878 | err |= __put_user(val16, (uint16_t *)(frame->retcode+0)); | |
66fb9763 | 879 | err |= __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); |
775b58d8 FB |
880 | val16 = 0x80cd; |
881 | err |= __put_user(val16, (uint16_t *)(frame->retcode+6)); | |
66fb9763 FB |
882 | } |
883 | ||
884 | if (err) | |
885 | goto give_sigsegv; | |
886 | ||
887 | /* Set up registers for signal handler */ | |
28be6234 | 888 | env->regs[R_ESP] = frame_addr; |
624f7979 | 889 | env->eip = ka->_sa_handler; |
66fb9763 FB |
890 | |
891 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
892 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
893 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
894 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
895 | env->eflags &= ~TF_MASK; | |
896 | ||
579a97f7 FB |
897 | unlock_user_struct(frame, frame_addr, 1); |
898 | ||
66fb9763 FB |
899 | return; |
900 | ||
901 | give_sigsegv: | |
579a97f7 | 902 | unlock_user_struct(frame, frame_addr, 1); |
66fb9763 | 903 | if (sig == TARGET_SIGSEGV) |
624f7979 | 904 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
905 | force_sig(TARGET_SIGSEGV /* , current */); |
906 | } | |
907 | ||
579a97f7 | 908 | /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 909 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
910 | target_siginfo_t *info, |
911 | target_sigset_t *set, CPUX86State *env) | |
66fb9763 | 912 | { |
28be6234 | 913 | abi_ulong frame_addr, addr; |
66fb9763 | 914 | struct rt_sigframe *frame; |
9231944d | 915 | int i, err = 0; |
66fb9763 | 916 | |
579a97f7 | 917 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 918 | |
579a97f7 | 919 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 920 | goto give_sigsegv; |
66fb9763 | 921 | |
c3b5bc8a | 922 | err |= __put_user(current_exec_domain_sig(sig), |
66fb9763 | 923 | &frame->sig); |
28be6234 FB |
924 | addr = frame_addr + offsetof(struct rt_sigframe, info); |
925 | err |= __put_user(addr, &frame->pinfo); | |
926 | addr = frame_addr + offsetof(struct rt_sigframe, uc); | |
927 | err |= __put_user(addr, &frame->puc); | |
66fb9763 FB |
928 | err |= copy_siginfo_to_user(&frame->info, info); |
929 | if (err) | |
930 | goto give_sigsegv; | |
31e31b8a | 931 | |
66fb9763 | 932 | /* Create the ucontext. */ |
b8076a74 FB |
933 | err |= __put_user(0, &frame->uc.tuc_flags); |
934 | err |= __put_user(0, &frame->uc.tuc_link); | |
a04e134a | 935 | err |= __put_user(target_sigaltstack_used.ss_sp, |
b8076a74 | 936 | &frame->uc.tuc_stack.ss_sp); |
a04e134a | 937 | err |= __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
b8076a74 | 938 | &frame->uc.tuc_stack.ss_flags); |
a04e134a | 939 | err |= __put_user(target_sigaltstack_used.ss_size, |
b8076a74 FB |
940 | &frame->uc.tuc_stack.ss_size); |
941 | err |= setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, | |
28be6234 FB |
942 | env, set->sig[0], |
943 | frame_addr + offsetof(struct rt_sigframe, fpstate)); | |
9231944d | 944 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
b8076a74 | 945 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
9231944d FB |
946 | goto give_sigsegv; |
947 | } | |
31e31b8a | 948 | |
66fb9763 FB |
949 | /* Set up to return from userspace. If provided, use a stub |
950 | already in userspace. */ | |
624f7979 PB |
951 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
952 | err |= __put_user(ka->sa_restorer, &frame->pretcode); | |
66fb9763 | 953 | } else { |
775b58d8 | 954 | uint16_t val16; |
28be6234 FB |
955 | addr = frame_addr + offsetof(struct rt_sigframe, retcode); |
956 | err |= __put_user(addr, &frame->pretcode); | |
66fb9763 | 957 | /* This is movl $,%eax ; int $0x80 */ |
775b58d8 | 958 | err |= __put_user(0xb8, (char *)(frame->retcode+0)); |
66fb9763 | 959 | err |= __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); |
775b58d8 FB |
960 | val16 = 0x80cd; |
961 | err |= __put_user(val16, (uint16_t *)(frame->retcode+5)); | |
66fb9763 FB |
962 | } |
963 | ||
964 | if (err) | |
965 | goto give_sigsegv; | |
966 | ||
967 | /* Set up registers for signal handler */ | |
28be6234 | 968 | env->regs[R_ESP] = frame_addr; |
624f7979 | 969 | env->eip = ka->_sa_handler; |
66fb9763 FB |
970 | |
971 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
972 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
973 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
974 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
975 | env->eflags &= ~TF_MASK; | |
976 | ||
579a97f7 FB |
977 | unlock_user_struct(frame, frame_addr, 1); |
978 | ||
66fb9763 FB |
979 | return; |
980 | ||
981 | give_sigsegv: | |
579a97f7 | 982 | unlock_user_struct(frame, frame_addr, 1); |
66fb9763 | 983 | if (sig == TARGET_SIGSEGV) |
624f7979 | 984 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
985 | force_sig(TARGET_SIGSEGV /* , current */); |
986 | } | |
987 | ||
988 | static int | |
989 | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) | |
990 | { | |
991 | unsigned int err = 0; | |
28be6234 FB |
992 | abi_ulong fpstate_addr; |
993 | unsigned int tmpflags; | |
994 | ||
995 | cpu_x86_load_seg(env, R_GS, tswap16(sc->gs)); | |
996 | cpu_x86_load_seg(env, R_FS, tswap16(sc->fs)); | |
997 | cpu_x86_load_seg(env, R_ES, tswap16(sc->es)); | |
998 | cpu_x86_load_seg(env, R_DS, tswap16(sc->ds)); | |
999 | ||
1000 | env->regs[R_EDI] = tswapl(sc->edi); | |
1001 | env->regs[R_ESI] = tswapl(sc->esi); | |
1002 | env->regs[R_EBP] = tswapl(sc->ebp); | |
1003 | env->regs[R_ESP] = tswapl(sc->esp); | |
1004 | env->regs[R_EBX] = tswapl(sc->ebx); | |
1005 | env->regs[R_EDX] = tswapl(sc->edx); | |
1006 | env->regs[R_ECX] = tswapl(sc->ecx); | |
1007 | env->eip = tswapl(sc->eip); | |
66fb9763 | 1008 | |
9a826d78 MM |
1009 | cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3); |
1010 | cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3); | |
5fafdf24 | 1011 | |
28be6234 FB |
1012 | tmpflags = tswapl(sc->eflags); |
1013 | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); | |
1014 | // regs->orig_eax = -1; /* disable syscall checks */ | |
66fb9763 | 1015 | |
28be6234 FB |
1016 | fpstate_addr = tswapl(sc->fpstate); |
1017 | if (fpstate_addr != 0) { | |
1018 | if (!access_ok(VERIFY_READ, fpstate_addr, | |
1019 | sizeof(struct target_fpstate))) | |
1020 | goto badframe; | |
1021 | cpu_x86_frstor(env, fpstate_addr, 1); | |
66fb9763 | 1022 | } |
ed2dcdf6 | 1023 | |
28be6234 | 1024 | *peax = tswapl(sc->eax); |
66fb9763 | 1025 | return err; |
66fb9763 FB |
1026 | badframe: |
1027 | return 1; | |
66fb9763 FB |
1028 | } |
1029 | ||
1030 | long do_sigreturn(CPUX86State *env) | |
1031 | { | |
579a97f7 FB |
1032 | struct sigframe *frame; |
1033 | abi_ulong frame_addr = env->regs[R_ESP] - 8; | |
c227f099 | 1034 | target_sigset_t target_set; |
66fb9763 FB |
1035 | sigset_t set; |
1036 | int eax, i; | |
1037 | ||
447db213 FB |
1038 | #if defined(DEBUG_SIGNAL) |
1039 | fprintf(stderr, "do_sigreturn\n"); | |
1040 | #endif | |
579a97f7 FB |
1041 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1042 | goto badframe; | |
66fb9763 | 1043 | /* set blocked signals */ |
9231944d FB |
1044 | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
1045 | goto badframe; | |
1046 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
1047 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
1048 | goto badframe; | |
1049 | } | |
66fb9763 | 1050 | |
9231944d | 1051 | target_to_host_sigset_internal(&set, &target_set); |
66fb9763 | 1052 | sigprocmask(SIG_SETMASK, &set, NULL); |
3b46e624 | 1053 | |
66fb9763 FB |
1054 | /* restore registers */ |
1055 | if (restore_sigcontext(env, &frame->sc, &eax)) | |
1056 | goto badframe; | |
579a97f7 | 1057 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1058 | return eax; |
1059 | ||
1060 | badframe: | |
579a97f7 | 1061 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1062 | force_sig(TARGET_SIGSEGV); |
1063 | return 0; | |
1064 | } | |
1065 | ||
1066 | long do_rt_sigreturn(CPUX86State *env) | |
1067 | { | |
28be6234 FB |
1068 | abi_ulong frame_addr; |
1069 | struct rt_sigframe *frame; | |
66fb9763 | 1070 | sigset_t set; |
66fb9763 FB |
1071 | int eax; |
1072 | ||
28be6234 FB |
1073 | frame_addr = env->regs[R_ESP] - 4; |
1074 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1075 | goto badframe; | |
b8076a74 | 1076 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
66fb9763 | 1077 | sigprocmask(SIG_SETMASK, &set, NULL); |
5fafdf24 | 1078 | |
b8076a74 | 1079 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax)) |
66fb9763 FB |
1080 | goto badframe; |
1081 | ||
28be6234 FB |
1082 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, |
1083 | get_sp_from_cpustate(env)) == -EFAULT) | |
66fb9763 | 1084 | goto badframe; |
a04e134a | 1085 | |
28be6234 | 1086 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1087 | return eax; |
1088 | ||
1089 | badframe: | |
28be6234 FB |
1090 | unlock_user_struct(frame, frame_addr, 0); |
1091 | force_sig(TARGET_SIGSEGV); | |
66fb9763 FB |
1092 | return 0; |
1093 | } | |
1094 | ||
1744aea1 AS |
1095 | #elif defined(TARGET_AARCH64) |
1096 | ||
1097 | struct target_sigcontext { | |
1098 | uint64_t fault_address; | |
1099 | /* AArch64 registers */ | |
1100 | uint64_t regs[31]; | |
1101 | uint64_t sp; | |
1102 | uint64_t pc; | |
1103 | uint64_t pstate; | |
1104 | /* 4K reserved for FP/SIMD state and future expansion */ | |
1105 | char __reserved[4096] __attribute__((__aligned__(16))); | |
1106 | }; | |
1107 | ||
1108 | struct target_ucontext { | |
1109 | abi_ulong tuc_flags; | |
1110 | abi_ulong tuc_link; | |
1111 | target_stack_t tuc_stack; | |
1112 | target_sigset_t tuc_sigmask; | |
1113 | /* glibc uses a 1024-bit sigset_t */ | |
1114 | char __unused[1024 / 8 - sizeof(target_sigset_t)]; | |
1115 | /* last for future expansion */ | |
1116 | struct target_sigcontext tuc_mcontext; | |
1117 | }; | |
1118 | ||
1119 | /* | |
1120 | * Header to be used at the beginning of structures extending the user | |
1121 | * context. Such structures must be placed after the rt_sigframe on the stack | |
1122 | * and be 16-byte aligned. The last structure must be a dummy one with the | |
1123 | * magic and size set to 0. | |
1124 | */ | |
1125 | struct target_aarch64_ctx { | |
1126 | uint32_t magic; | |
1127 | uint32_t size; | |
1128 | }; | |
1129 | ||
1130 | #define TARGET_FPSIMD_MAGIC 0x46508001 | |
1131 | ||
1132 | struct target_fpsimd_context { | |
1133 | struct target_aarch64_ctx head; | |
1134 | uint32_t fpsr; | |
1135 | uint32_t fpcr; | |
1136 | uint64_t vregs[32 * 2]; /* really uint128_t vregs[32] */ | |
1137 | }; | |
1138 | ||
1139 | /* | |
1140 | * Auxiliary context saved in the sigcontext.__reserved array. Not exported to | |
1141 | * user space as it will change with the addition of new context. User space | |
1142 | * should check the magic/size information. | |
1143 | */ | |
1144 | struct target_aux_context { | |
1145 | struct target_fpsimd_context fpsimd; | |
1146 | /* additional context to be added before "end" */ | |
1147 | struct target_aarch64_ctx end; | |
1148 | }; | |
1149 | ||
1150 | struct target_rt_sigframe { | |
1151 | struct target_siginfo info; | |
1152 | struct target_ucontext uc; | |
1153 | uint64_t fp; | |
1154 | uint64_t lr; | |
1155 | uint32_t tramp[2]; | |
1156 | }; | |
1157 | ||
1158 | static int target_setup_sigframe(struct target_rt_sigframe *sf, | |
1159 | CPUARMState *env, target_sigset_t *set) | |
1160 | { | |
1161 | int i; | |
1162 | struct target_aux_context *aux = | |
1163 | (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved; | |
1164 | ||
1165 | /* set up the stack frame for unwinding */ | |
1166 | __put_user(env->xregs[29], &sf->fp); | |
1167 | __put_user(env->xregs[30], &sf->lr); | |
1168 | ||
1169 | for (i = 0; i < 31; i++) { | |
1170 | __put_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]); | |
1171 | } | |
1172 | __put_user(env->xregs[31], &sf->uc.tuc_mcontext.sp); | |
1173 | __put_user(env->pc, &sf->uc.tuc_mcontext.pc); | |
d356312f | 1174 | __put_user(pstate_read(env), &sf->uc.tuc_mcontext.pstate); |
1744aea1 AS |
1175 | |
1176 | __put_user(/*current->thread.fault_address*/ 0, | |
1177 | &sf->uc.tuc_mcontext.fault_address); | |
1178 | ||
1179 | for (i = 0; i < TARGET_NSIG_WORDS; i++) { | |
1180 | __put_user(set->sig[i], &sf->uc.tuc_sigmask.sig[i]); | |
1181 | } | |
1182 | ||
1183 | for (i = 0; i < 32; i++) { | |
1184 | #ifdef TARGET_WORDS_BIGENDIAN | |
1185 | __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]); | |
1186 | __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]); | |
1187 | #else | |
1188 | __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]); | |
1189 | __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]); | |
1190 | #endif | |
1191 | } | |
e0ee138b WN |
1192 | __put_user(vfp_get_fpsr(env), &aux->fpsimd.fpsr); |
1193 | __put_user(vfp_get_fpcr(env), &aux->fpsimd.fpcr); | |
1744aea1 AS |
1194 | __put_user(TARGET_FPSIMD_MAGIC, &aux->fpsimd.head.magic); |
1195 | __put_user(sizeof(struct target_fpsimd_context), | |
1196 | &aux->fpsimd.head.size); | |
1197 | ||
1198 | /* set the "end" magic */ | |
1199 | __put_user(0, &aux->end.magic); | |
1200 | __put_user(0, &aux->end.size); | |
1201 | ||
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | static int target_restore_sigframe(CPUARMState *env, | |
1206 | struct target_rt_sigframe *sf) | |
1207 | { | |
1208 | sigset_t set; | |
1209 | int i; | |
1210 | struct target_aux_context *aux = | |
1211 | (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved; | |
e0ee138b | 1212 | uint32_t magic, size, fpsr, fpcr; |
d356312f | 1213 | uint64_t pstate; |
1744aea1 AS |
1214 | |
1215 | target_to_host_sigset(&set, &sf->uc.tuc_sigmask); | |
1216 | sigprocmask(SIG_SETMASK, &set, NULL); | |
1217 | ||
1218 | for (i = 0; i < 31; i++) { | |
1219 | __get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]); | |
1220 | } | |
1221 | ||
1222 | __get_user(env->xregs[31], &sf->uc.tuc_mcontext.sp); | |
1223 | __get_user(env->pc, &sf->uc.tuc_mcontext.pc); | |
d356312f PM |
1224 | __get_user(pstate, &sf->uc.tuc_mcontext.pstate); |
1225 | pstate_write(env, pstate); | |
1744aea1 AS |
1226 | |
1227 | __get_user(magic, &aux->fpsimd.head.magic); | |
1228 | __get_user(size, &aux->fpsimd.head.size); | |
1229 | ||
1230 | if (magic != TARGET_FPSIMD_MAGIC | |
1231 | || size != sizeof(struct target_fpsimd_context)) { | |
1232 | return 1; | |
1233 | } | |
1234 | ||
1235 | for (i = 0; i < 32 * 2; i++) { | |
1236 | __get_user(env->vfp.regs[i], &aux->fpsimd.vregs[i]); | |
1237 | } | |
e0ee138b WN |
1238 | __get_user(fpsr, &aux->fpsimd.fpsr); |
1239 | vfp_set_fpsr(env, fpsr); | |
1240 | __get_user(fpcr, &aux->fpsimd.fpcr); | |
1241 | vfp_set_fpcr(env, fpcr); | |
1744aea1 AS |
1242 | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | static abi_ulong get_sigframe(struct target_sigaction *ka, CPUARMState *env) | |
1247 | { | |
1248 | abi_ulong sp; | |
1249 | ||
1250 | sp = env->xregs[31]; | |
1251 | ||
1252 | /* | |
1253 | * This is the X/Open sanctioned signal stack switching. | |
1254 | */ | |
1255 | if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) { | |
1256 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
1257 | } | |
1258 | ||
1259 | sp = (sp - sizeof(struct target_rt_sigframe)) & ~15; | |
1260 | ||
1261 | return sp; | |
1262 | } | |
1263 | ||
1264 | static void target_setup_frame(int usig, struct target_sigaction *ka, | |
1265 | target_siginfo_t *info, target_sigset_t *set, | |
1266 | CPUARMState *env) | |
1267 | { | |
1268 | struct target_rt_sigframe *frame; | |
1269 | abi_ulong frame_addr; | |
1270 | ||
1271 | frame_addr = get_sigframe(ka, env); | |
1272 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
1273 | goto give_sigsegv; | |
1274 | } | |
1275 | ||
1276 | __put_user(0, &frame->uc.tuc_flags); | |
1277 | __put_user(0, &frame->uc.tuc_link); | |
1278 | ||
1279 | __put_user(target_sigaltstack_used.ss_sp, | |
1280 | &frame->uc.tuc_stack.ss_sp); | |
1281 | __put_user(sas_ss_flags(env->xregs[31]), | |
1282 | &frame->uc.tuc_stack.ss_flags); | |
1283 | __put_user(target_sigaltstack_used.ss_size, | |
1284 | &frame->uc.tuc_stack.ss_size); | |
1285 | target_setup_sigframe(frame, env, set); | |
1286 | /* mov x8,#__NR_rt_sigreturn; svc #0 */ | |
1287 | __put_user(0xd2801168, &frame->tramp[0]); | |
1288 | __put_user(0xd4000001, &frame->tramp[1]); | |
1289 | env->xregs[0] = usig; | |
1290 | env->xregs[31] = frame_addr; | |
1291 | env->xregs[29] = env->xregs[31] + offsetof(struct target_rt_sigframe, fp); | |
1292 | env->pc = ka->_sa_handler; | |
1293 | env->xregs[30] = env->xregs[31] + | |
1294 | offsetof(struct target_rt_sigframe, tramp); | |
1295 | if (info) { | |
1296 | if (copy_siginfo_to_user(&frame->info, info)) { | |
1297 | goto give_sigsegv; | |
1298 | } | |
1299 | env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info); | |
1300 | env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
1301 | } | |
1302 | ||
1303 | unlock_user_struct(frame, frame_addr, 1); | |
1304 | return; | |
1305 | ||
1306 | give_sigsegv: | |
1307 | unlock_user_struct(frame, frame_addr, 1); | |
1308 | force_sig(TARGET_SIGSEGV); | |
1309 | } | |
1310 | ||
1311 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
1312 | target_siginfo_t *info, target_sigset_t *set, | |
1313 | CPUARMState *env) | |
1314 | { | |
1315 | target_setup_frame(sig, ka, info, set, env); | |
1316 | } | |
1317 | ||
1318 | static void setup_frame(int sig, struct target_sigaction *ka, | |
1319 | target_sigset_t *set, CPUARMState *env) | |
1320 | { | |
1321 | target_setup_frame(sig, ka, 0, set, env); | |
1322 | } | |
1323 | ||
1324 | long do_rt_sigreturn(CPUARMState *env) | |
1325 | { | |
1326 | struct target_rt_sigframe *frame; | |
1327 | abi_ulong frame_addr = env->xregs[31]; | |
1328 | ||
1329 | if (frame_addr & 15) { | |
1330 | goto badframe; | |
1331 | } | |
1332 | ||
1333 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
1334 | goto badframe; | |
1335 | } | |
1336 | ||
1337 | if (target_restore_sigframe(env, frame)) { | |
1338 | goto badframe; | |
1339 | } | |
1340 | ||
1341 | if (do_sigaltstack(frame_addr + | |
1342 | offsetof(struct target_rt_sigframe, uc.tuc_stack), | |
1343 | 0, get_sp_from_cpustate(env)) == -EFAULT) { | |
1344 | goto badframe; | |
1345 | } | |
1346 | ||
1347 | unlock_user_struct(frame, frame_addr, 0); | |
1348 | return env->xregs[0]; | |
1349 | ||
1350 | badframe: | |
1351 | unlock_user_struct(frame, frame_addr, 0); | |
1352 | force_sig(TARGET_SIGSEGV); | |
1353 | return 0; | |
1354 | } | |
1355 | ||
1356 | long do_sigreturn(CPUARMState *env) | |
1357 | { | |
1358 | return do_rt_sigreturn(env); | |
1359 | } | |
1360 | ||
43fff238 FB |
1361 | #elif defined(TARGET_ARM) |
1362 | ||
1363 | struct target_sigcontext { | |
992f48a0 BS |
1364 | abi_ulong trap_no; |
1365 | abi_ulong error_code; | |
1366 | abi_ulong oldmask; | |
1367 | abi_ulong arm_r0; | |
1368 | abi_ulong arm_r1; | |
1369 | abi_ulong arm_r2; | |
1370 | abi_ulong arm_r3; | |
1371 | abi_ulong arm_r4; | |
1372 | abi_ulong arm_r5; | |
1373 | abi_ulong arm_r6; | |
1374 | abi_ulong arm_r7; | |
1375 | abi_ulong arm_r8; | |
1376 | abi_ulong arm_r9; | |
1377 | abi_ulong arm_r10; | |
1378 | abi_ulong arm_fp; | |
1379 | abi_ulong arm_ip; | |
1380 | abi_ulong arm_sp; | |
1381 | abi_ulong arm_lr; | |
1382 | abi_ulong arm_pc; | |
1383 | abi_ulong arm_cpsr; | |
1384 | abi_ulong fault_address; | |
43fff238 FB |
1385 | }; |
1386 | ||
a745ec6d PB |
1387 | struct target_ucontext_v1 { |
1388 | abi_ulong tuc_flags; | |
1389 | abi_ulong tuc_link; | |
c227f099 | 1390 | target_stack_t tuc_stack; |
a745ec6d | 1391 | struct target_sigcontext tuc_mcontext; |
c227f099 | 1392 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
a745ec6d PB |
1393 | }; |
1394 | ||
1395 | struct target_ucontext_v2 { | |
992f48a0 BS |
1396 | abi_ulong tuc_flags; |
1397 | abi_ulong tuc_link; | |
c227f099 | 1398 | target_stack_t tuc_stack; |
b8076a74 | 1399 | struct target_sigcontext tuc_mcontext; |
c227f099 | 1400 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
5f0b7c88 | 1401 | char __unused[128 - sizeof(target_sigset_t)]; |
a745ec6d | 1402 | abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); |
43fff238 FB |
1403 | }; |
1404 | ||
0d871bdb PM |
1405 | struct target_user_vfp { |
1406 | uint64_t fpregs[32]; | |
1407 | abi_ulong fpscr; | |
1408 | }; | |
1409 | ||
1410 | struct target_user_vfp_exc { | |
1411 | abi_ulong fpexc; | |
1412 | abi_ulong fpinst; | |
1413 | abi_ulong fpinst2; | |
1414 | }; | |
1415 | ||
1416 | struct target_vfp_sigframe { | |
1417 | abi_ulong magic; | |
1418 | abi_ulong size; | |
1419 | struct target_user_vfp ufp; | |
1420 | struct target_user_vfp_exc ufp_exc; | |
1421 | } __attribute__((__aligned__(8))); | |
1422 | ||
08e11256 PM |
1423 | struct target_iwmmxt_sigframe { |
1424 | abi_ulong magic; | |
1425 | abi_ulong size; | |
1426 | uint64_t regs[16]; | |
1427 | /* Note that not all the coprocessor control registers are stored here */ | |
1428 | uint32_t wcssf; | |
1429 | uint32_t wcasf; | |
1430 | uint32_t wcgr0; | |
1431 | uint32_t wcgr1; | |
1432 | uint32_t wcgr2; | |
1433 | uint32_t wcgr3; | |
1434 | } __attribute__((__aligned__(8))); | |
1435 | ||
0d871bdb | 1436 | #define TARGET_VFP_MAGIC 0x56465001 |
08e11256 | 1437 | #define TARGET_IWMMXT_MAGIC 0x12ef842a |
0d871bdb | 1438 | |
a8c33204 | 1439 | struct sigframe_v1 |
43fff238 FB |
1440 | { |
1441 | struct target_sigcontext sc; | |
992f48a0 BS |
1442 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
1443 | abi_ulong retcode; | |
43fff238 FB |
1444 | }; |
1445 | ||
a8c33204 PB |
1446 | struct sigframe_v2 |
1447 | { | |
1448 | struct target_ucontext_v2 uc; | |
1449 | abi_ulong retcode; | |
1450 | }; | |
1451 | ||
a745ec6d | 1452 | struct rt_sigframe_v1 |
43fff238 | 1453 | { |
f8b0aa25 FB |
1454 | abi_ulong pinfo; |
1455 | abi_ulong puc; | |
43fff238 | 1456 | struct target_siginfo info; |
a745ec6d PB |
1457 | struct target_ucontext_v1 uc; |
1458 | abi_ulong retcode; | |
1459 | }; | |
1460 | ||
1461 | struct rt_sigframe_v2 | |
1462 | { | |
1463 | struct target_siginfo info; | |
1464 | struct target_ucontext_v2 uc; | |
992f48a0 | 1465 | abi_ulong retcode; |
43fff238 FB |
1466 | }; |
1467 | ||
1468 | #define TARGET_CONFIG_CPU_32 1 | |
1469 | ||
1470 | /* | |
1471 | * For ARM syscalls, we encode the syscall number into the instruction. | |
1472 | */ | |
1473 | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) | |
1474 | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) | |
1475 | ||
1476 | /* | |
1477 | * For Thumb syscalls, we pass the syscall number via r7. We therefore | |
1478 | * need two 16-bit instructions. | |
1479 | */ | |
1480 | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) | |
1481 | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) | |
1482 | ||
992f48a0 | 1483 | static const abi_ulong retcodes[4] = { |
43fff238 FB |
1484 | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
1485 | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN | |
1486 | }; | |
1487 | ||
1488 | ||
43fff238 FB |
1489 | #define __get_user_error(x,p,e) __get_user(x, p) |
1490 | ||
05390248 | 1491 | static inline int valid_user_regs(CPUARMState *regs) |
43fff238 FB |
1492 | { |
1493 | return 1; | |
1494 | } | |
1495 | ||
a8c33204 | 1496 | static void |
43fff238 | 1497 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
05390248 | 1498 | CPUARMState *env, abi_ulong mask) |
43fff238 | 1499 | { |
a8c33204 PB |
1500 | __put_user(env->regs[0], &sc->arm_r0); |
1501 | __put_user(env->regs[1], &sc->arm_r1); | |
1502 | __put_user(env->regs[2], &sc->arm_r2); | |
1503 | __put_user(env->regs[3], &sc->arm_r3); | |
1504 | __put_user(env->regs[4], &sc->arm_r4); | |
1505 | __put_user(env->regs[5], &sc->arm_r5); | |
1506 | __put_user(env->regs[6], &sc->arm_r6); | |
1507 | __put_user(env->regs[7], &sc->arm_r7); | |
1508 | __put_user(env->regs[8], &sc->arm_r8); | |
1509 | __put_user(env->regs[9], &sc->arm_r9); | |
1510 | __put_user(env->regs[10], &sc->arm_r10); | |
1511 | __put_user(env->regs[11], &sc->arm_fp); | |
1512 | __put_user(env->regs[12], &sc->arm_ip); | |
1513 | __put_user(env->regs[13], &sc->arm_sp); | |
1514 | __put_user(env->regs[14], &sc->arm_lr); | |
1515 | __put_user(env->regs[15], &sc->arm_pc); | |
43fff238 | 1516 | #ifdef TARGET_CONFIG_CPU_32 |
a8c33204 | 1517 | __put_user(cpsr_read(env), &sc->arm_cpsr); |
43fff238 FB |
1518 | #endif |
1519 | ||
a8c33204 PB |
1520 | __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); |
1521 | __put_user(/* current->thread.error_code */ 0, &sc->error_code); | |
1522 | __put_user(/* current->thread.address */ 0, &sc->fault_address); | |
1523 | __put_user(mask, &sc->oldmask); | |
43fff238 FB |
1524 | } |
1525 | ||
579a97f7 | 1526 | static inline abi_ulong |
05390248 | 1527 | get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize) |
43fff238 FB |
1528 | { |
1529 | unsigned long sp = regs->regs[13]; | |
1530 | ||
43fff238 FB |
1531 | /* |
1532 | * This is the X/Open sanctioned signal stack switching. | |
1533 | */ | |
624f7979 | 1534 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) |
a04e134a | 1535 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
43fff238 FB |
1536 | /* |
1537 | * ATPCS B01 mandates 8-byte alignment | |
1538 | */ | |
579a97f7 | 1539 | return (sp - framesize) & ~7; |
43fff238 FB |
1540 | } |
1541 | ||
1542 | static int | |
05390248 | 1543 | setup_return(CPUARMState *env, struct target_sigaction *ka, |
f8b0aa25 | 1544 | abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr) |
43fff238 | 1545 | { |
624f7979 | 1546 | abi_ulong handler = ka->_sa_handler; |
992f48a0 | 1547 | abi_ulong retcode; |
75b680e5 | 1548 | int thumb = handler & 1; |
964413d9 PM |
1549 | uint32_t cpsr = cpsr_read(env); |
1550 | ||
1551 | cpsr &= ~CPSR_IT; | |
1552 | if (thumb) { | |
1553 | cpsr |= CPSR_T; | |
1554 | } else { | |
1555 | cpsr &= ~CPSR_T; | |
1556 | } | |
43fff238 | 1557 | |
624f7979 PB |
1558 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1559 | retcode = ka->sa_restorer; | |
43fff238 FB |
1560 | } else { |
1561 | unsigned int idx = thumb; | |
1562 | ||
624f7979 | 1563 | if (ka->sa_flags & TARGET_SA_SIGINFO) |
43fff238 FB |
1564 | idx += 2; |
1565 | ||
1566 | if (__put_user(retcodes[idx], rc)) | |
1567 | return 1; | |
ca8a277c | 1568 | |
f8b0aa25 | 1569 | retcode = rc_addr + thumb; |
43fff238 FB |
1570 | } |
1571 | ||
1572 | env->regs[0] = usig; | |
f8b0aa25 | 1573 | env->regs[13] = frame_addr; |
43fff238 FB |
1574 | env->regs[14] = retcode; |
1575 | env->regs[15] = handler & (thumb ? ~1 : ~3); | |
964413d9 | 1576 | cpsr_write(env, cpsr, 0xffffffff); |
43fff238 FB |
1577 | |
1578 | return 0; | |
1579 | } | |
1580 | ||
05390248 | 1581 | static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env) |
0d871bdb PM |
1582 | { |
1583 | int i; | |
1584 | struct target_vfp_sigframe *vfpframe; | |
1585 | vfpframe = (struct target_vfp_sigframe *)regspace; | |
1586 | __put_user(TARGET_VFP_MAGIC, &vfpframe->magic); | |
1587 | __put_user(sizeof(*vfpframe), &vfpframe->size); | |
1588 | for (i = 0; i < 32; i++) { | |
005e1a0a | 1589 | __put_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]); |
0d871bdb PM |
1590 | } |
1591 | __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr); | |
1592 | __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc); | |
1593 | __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); | |
1594 | __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2); | |
1595 | return (abi_ulong*)(vfpframe+1); | |
1596 | } | |
1597 | ||
05390248 AF |
1598 | static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace, |
1599 | CPUARMState *env) | |
08e11256 PM |
1600 | { |
1601 | int i; | |
1602 | struct target_iwmmxt_sigframe *iwmmxtframe; | |
1603 | iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace; | |
1604 | __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic); | |
1605 | __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size); | |
1606 | for (i = 0; i < 16; i++) { | |
1607 | __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); | |
1608 | } | |
1609 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); | |
1610 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); | |
1611 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); | |
1612 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); | |
1613 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); | |
1614 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); | |
1615 | return (abi_ulong*)(iwmmxtframe+1); | |
1616 | } | |
1617 | ||
a8c33204 | 1618 | static void setup_sigframe_v2(struct target_ucontext_v2 *uc, |
05390248 | 1619 | target_sigset_t *set, CPUARMState *env) |
a8c33204 PB |
1620 | { |
1621 | struct target_sigaltstack stack; | |
1622 | int i; | |
0d871bdb | 1623 | abi_ulong *regspace; |
a8c33204 PB |
1624 | |
1625 | /* Clear all the bits of the ucontext we don't use. */ | |
1626 | memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); | |
1627 | ||
1628 | memset(&stack, 0, sizeof(stack)); | |
1629 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1630 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1631 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
1632 | memcpy(&uc->tuc_stack, &stack, sizeof(stack)); | |
1633 | ||
1634 | setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]); | |
0d871bdb PM |
1635 | /* Save coprocessor signal frame. */ |
1636 | regspace = uc->tuc_regspace; | |
1637 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
1638 | regspace = setup_sigframe_v2_vfp(regspace, env); | |
1639 | } | |
08e11256 PM |
1640 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
1641 | regspace = setup_sigframe_v2_iwmmxt(regspace, env); | |
1642 | } | |
1643 | ||
0d871bdb PM |
1644 | /* Write terminating magic word */ |
1645 | __put_user(0, regspace); | |
1646 | ||
a8c33204 PB |
1647 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1648 | __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); | |
1649 | } | |
1650 | } | |
1651 | ||
579a97f7 | 1652 | /* compare linux/arch/arm/kernel/signal.c:setup_frame() */ |
624f7979 | 1653 | static void setup_frame_v1(int usig, struct target_sigaction *ka, |
05390248 | 1654 | target_sigset_t *set, CPUARMState *regs) |
43fff238 | 1655 | { |
a8c33204 | 1656 | struct sigframe_v1 *frame; |
579a97f7 | 1657 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
a8c33204 | 1658 | int i; |
43fff238 | 1659 | |
579a97f7 FB |
1660 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1661 | return; | |
1662 | ||
a8c33204 | 1663 | setup_sigcontext(&frame->sc, regs, set->sig[0]); |
43fff238 | 1664 | |
9231944d FB |
1665 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1666 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
579a97f7 | 1667 | goto end; |
43fff238 FB |
1668 | } |
1669 | ||
a8c33204 PB |
1670 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, |
1671 | frame_addr + offsetof(struct sigframe_v1, retcode)); | |
579a97f7 FB |
1672 | |
1673 | end: | |
1674 | unlock_user_struct(frame, frame_addr, 1); | |
a8c33204 PB |
1675 | } |
1676 | ||
624f7979 | 1677 | static void setup_frame_v2(int usig, struct target_sigaction *ka, |
05390248 | 1678 | target_sigset_t *set, CPUARMState *regs) |
a8c33204 PB |
1679 | { |
1680 | struct sigframe_v2 *frame; | |
1681 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); | |
1682 | ||
1683 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1684 | return; | |
1685 | ||
1686 | setup_sigframe_v2(&frame->uc, set, regs); | |
1687 | ||
1688 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, | |
1689 | frame_addr + offsetof(struct sigframe_v2, retcode)); | |
1690 | ||
1691 | unlock_user_struct(frame, frame_addr, 1); | |
1692 | } | |
1693 | ||
624f7979 | 1694 | static void setup_frame(int usig, struct target_sigaction *ka, |
05390248 | 1695 | target_sigset_t *set, CPUARMState *regs) |
a8c33204 PB |
1696 | { |
1697 | if (get_osversion() >= 0x020612) { | |
1698 | setup_frame_v2(usig, ka, set, regs); | |
1699 | } else { | |
1700 | setup_frame_v1(usig, ka, set, regs); | |
1701 | } | |
43fff238 FB |
1702 | } |
1703 | ||
579a97f7 | 1704 | /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 1705 | static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, |
c227f099 | 1706 | target_siginfo_t *info, |
05390248 | 1707 | target_sigset_t *set, CPUARMState *env) |
43fff238 | 1708 | { |
a745ec6d | 1709 | struct rt_sigframe_v1 *frame; |
579a97f7 | 1710 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
a04e134a | 1711 | struct target_sigaltstack stack; |
a8c33204 | 1712 | int i; |
f8b0aa25 | 1713 | abi_ulong info_addr, uc_addr; |
43fff238 | 1714 | |
579a97f7 | 1715 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
edf779ff FB |
1716 | return /* 1 */; |
1717 | ||
a745ec6d | 1718 | info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info); |
a8c33204 | 1719 | __put_user(info_addr, &frame->pinfo); |
a745ec6d | 1720 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc); |
a8c33204 PB |
1721 | __put_user(uc_addr, &frame->puc); |
1722 | copy_siginfo_to_user(&frame->info, info); | |
43fff238 FB |
1723 | |
1724 | /* Clear all the bits of the ucontext we don't use. */ | |
a745ec6d | 1725 | memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext)); |
43fff238 | 1726 | |
a04e134a TS |
1727 | memset(&stack, 0, sizeof(stack)); |
1728 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1729 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1730 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
775b58d8 | 1731 | memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack)); |
a04e134a | 1732 | |
a8c33204 | 1733 | setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]); |
9231944d | 1734 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
b8076a74 | 1735 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
579a97f7 | 1736 | goto end; |
9231944d | 1737 | } |
43fff238 | 1738 | |
a8c33204 PB |
1739 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1740 | frame_addr + offsetof(struct rt_sigframe_v1, retcode)); | |
a745ec6d | 1741 | |
a8c33204 PB |
1742 | env->regs[1] = info_addr; |
1743 | env->regs[2] = uc_addr; | |
a745ec6d PB |
1744 | |
1745 | end: | |
1746 | unlock_user_struct(frame, frame_addr, 1); | |
a745ec6d PB |
1747 | } |
1748 | ||
624f7979 | 1749 | static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, |
c227f099 | 1750 | target_siginfo_t *info, |
05390248 | 1751 | target_sigset_t *set, CPUARMState *env) |
a745ec6d PB |
1752 | { |
1753 | struct rt_sigframe_v2 *frame; | |
1754 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
a745ec6d PB |
1755 | abi_ulong info_addr, uc_addr; |
1756 | ||
1757 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1758 | return /* 1 */; | |
1759 | ||
1760 | info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info); | |
1761 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc); | |
a8c33204 | 1762 | copy_siginfo_to_user(&frame->info, info); |
a745ec6d | 1763 | |
a8c33204 | 1764 | setup_sigframe_v2(&frame->uc, set, env); |
a745ec6d | 1765 | |
a8c33204 PB |
1766 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1767 | frame_addr + offsetof(struct rt_sigframe_v2, retcode)); | |
a745ec6d | 1768 | |
a8c33204 PB |
1769 | env->regs[1] = info_addr; |
1770 | env->regs[2] = uc_addr; | |
43fff238 | 1771 | |
579a97f7 | 1772 | unlock_user_struct(frame, frame_addr, 1); |
43fff238 FB |
1773 | } |
1774 | ||
624f7979 | 1775 | static void setup_rt_frame(int usig, struct target_sigaction *ka, |
c227f099 | 1776 | target_siginfo_t *info, |
05390248 | 1777 | target_sigset_t *set, CPUARMState *env) |
a745ec6d PB |
1778 | { |
1779 | if (get_osversion() >= 0x020612) { | |
1780 | setup_rt_frame_v2(usig, ka, info, set, env); | |
1781 | } else { | |
1782 | setup_rt_frame_v1(usig, ka, info, set, env); | |
1783 | } | |
1784 | } | |
1785 | ||
43fff238 | 1786 | static int |
05390248 | 1787 | restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc) |
43fff238 FB |
1788 | { |
1789 | int err = 0; | |
b5ff1b31 | 1790 | uint32_t cpsr; |
43fff238 FB |
1791 | |
1792 | __get_user_error(env->regs[0], &sc->arm_r0, err); | |
1793 | __get_user_error(env->regs[1], &sc->arm_r1, err); | |
1794 | __get_user_error(env->regs[2], &sc->arm_r2, err); | |
1795 | __get_user_error(env->regs[3], &sc->arm_r3, err); | |
1796 | __get_user_error(env->regs[4], &sc->arm_r4, err); | |
1797 | __get_user_error(env->regs[5], &sc->arm_r5, err); | |
1798 | __get_user_error(env->regs[6], &sc->arm_r6, err); | |
1799 | __get_user_error(env->regs[7], &sc->arm_r7, err); | |
1800 | __get_user_error(env->regs[8], &sc->arm_r8, err); | |
1801 | __get_user_error(env->regs[9], &sc->arm_r9, err); | |
1802 | __get_user_error(env->regs[10], &sc->arm_r10, err); | |
1803 | __get_user_error(env->regs[11], &sc->arm_fp, err); | |
1804 | __get_user_error(env->regs[12], &sc->arm_ip, err); | |
1805 | __get_user_error(env->regs[13], &sc->arm_sp, err); | |
1806 | __get_user_error(env->regs[14], &sc->arm_lr, err); | |
1807 | __get_user_error(env->regs[15], &sc->arm_pc, err); | |
1808 | #ifdef TARGET_CONFIG_CPU_32 | |
b5ff1b31 | 1809 | __get_user_error(cpsr, &sc->arm_cpsr, err); |
75b680e5 | 1810 | cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC); |
43fff238 FB |
1811 | #endif |
1812 | ||
1813 | err |= !valid_user_regs(env); | |
1814 | ||
1815 | return err; | |
1816 | } | |
1817 | ||
05390248 | 1818 | static long do_sigreturn_v1(CPUARMState *env) |
43fff238 | 1819 | { |
f8b0aa25 | 1820 | abi_ulong frame_addr; |
978fae9f | 1821 | struct sigframe_v1 *frame = NULL; |
c227f099 | 1822 | target_sigset_t set; |
43fff238 | 1823 | sigset_t host_set; |
9231944d | 1824 | int i; |
43fff238 FB |
1825 | |
1826 | /* | |
1827 | * Since we stacked the signal on a 64-bit boundary, | |
1828 | * then 'sp' should be word aligned here. If it's | |
1829 | * not, then the user is trying to mess with us. | |
1830 | */ | |
f8b0aa25 | 1831 | frame_addr = env->regs[13]; |
978fae9f PM |
1832 | if (frame_addr & 7) { |
1833 | goto badframe; | |
1834 | } | |
1835 | ||
f8b0aa25 FB |
1836 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1837 | goto badframe; | |
43fff238 | 1838 | |
9231944d FB |
1839 | if (__get_user(set.sig[0], &frame->sc.oldmask)) |
1840 | goto badframe; | |
1841 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
1842 | if (__get_user(set.sig[i], &frame->extramask[i - 1])) | |
1843 | goto badframe; | |
1844 | } | |
43fff238 | 1845 | |
9231944d | 1846 | target_to_host_sigset_internal(&host_set, &set); |
43fff238 FB |
1847 | sigprocmask(SIG_SETMASK, &host_set, NULL); |
1848 | ||
1849 | if (restore_sigcontext(env, &frame->sc)) | |
1850 | goto badframe; | |
1851 | ||
1852 | #if 0 | |
1853 | /* Send SIGTRAP if we're single-stepping */ | |
1854 | if (ptrace_cancel_bpt(current)) | |
1855 | send_sig(SIGTRAP, current, 1); | |
1856 | #endif | |
f8b0aa25 FB |
1857 | unlock_user_struct(frame, frame_addr, 0); |
1858 | return env->regs[0]; | |
43fff238 FB |
1859 | |
1860 | badframe: | |
f8b0aa25 | 1861 | unlock_user_struct(frame, frame_addr, 0); |
66393fb9 | 1862 | force_sig(TARGET_SIGSEGV /* , current */); |
43fff238 FB |
1863 | return 0; |
1864 | } | |
1865 | ||
05390248 | 1866 | static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *regspace) |
5f9099d9 PM |
1867 | { |
1868 | int i; | |
1869 | abi_ulong magic, sz; | |
1870 | uint32_t fpscr, fpexc; | |
1871 | struct target_vfp_sigframe *vfpframe; | |
1872 | vfpframe = (struct target_vfp_sigframe *)regspace; | |
1873 | ||
1874 | __get_user(magic, &vfpframe->magic); | |
1875 | __get_user(sz, &vfpframe->size); | |
1876 | if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) { | |
1877 | return 0; | |
1878 | } | |
1879 | for (i = 0; i < 32; i++) { | |
005e1a0a | 1880 | __get_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]); |
5f9099d9 PM |
1881 | } |
1882 | __get_user(fpscr, &vfpframe->ufp.fpscr); | |
1883 | vfp_set_fpscr(env, fpscr); | |
1884 | __get_user(fpexc, &vfpframe->ufp_exc.fpexc); | |
1885 | /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid | |
1886 | * and the exception flag is cleared | |
1887 | */ | |
1888 | fpexc |= (1 << 30); | |
1889 | fpexc &= ~((1 << 31) | (1 << 28)); | |
1890 | env->vfp.xregs[ARM_VFP_FPEXC] = fpexc; | |
1891 | __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); | |
1892 | __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2); | |
1893 | return (abi_ulong*)(vfpframe + 1); | |
1894 | } | |
1895 | ||
05390248 AF |
1896 | static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env, |
1897 | abi_ulong *regspace) | |
a59d69da PM |
1898 | { |
1899 | int i; | |
1900 | abi_ulong magic, sz; | |
1901 | struct target_iwmmxt_sigframe *iwmmxtframe; | |
1902 | iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace; | |
1903 | ||
1904 | __get_user(magic, &iwmmxtframe->magic); | |
1905 | __get_user(sz, &iwmmxtframe->size); | |
1906 | if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) { | |
1907 | return 0; | |
1908 | } | |
1909 | for (i = 0; i < 16; i++) { | |
1910 | __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); | |
1911 | } | |
1912 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); | |
1913 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); | |
1914 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); | |
1915 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); | |
1916 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); | |
1917 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); | |
1918 | return (abi_ulong*)(iwmmxtframe + 1); | |
1919 | } | |
1920 | ||
05390248 | 1921 | static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr, |
a8c33204 PB |
1922 | struct target_ucontext_v2 *uc) |
1923 | { | |
1924 | sigset_t host_set; | |
5f9099d9 | 1925 | abi_ulong *regspace; |
a8c33204 PB |
1926 | |
1927 | target_to_host_sigset(&host_set, &uc->tuc_sigmask); | |
1928 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
1929 | ||
1930 | if (restore_sigcontext(env, &uc->tuc_mcontext)) | |
1931 | return 1; | |
1932 | ||
5f9099d9 PM |
1933 | /* Restore coprocessor signal frame */ |
1934 | regspace = uc->tuc_regspace; | |
1935 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
1936 | regspace = restore_sigframe_v2_vfp(env, regspace); | |
1937 | if (!regspace) { | |
1938 | return 1; | |
1939 | } | |
1940 | } | |
a59d69da PM |
1941 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
1942 | regspace = restore_sigframe_v2_iwmmxt(env, regspace); | |
1943 | if (!regspace) { | |
1944 | return 1; | |
1945 | } | |
1946 | } | |
5f9099d9 | 1947 | |
a8c33204 PB |
1948 | if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) |
1949 | return 1; | |
1950 | ||
1951 | #if 0 | |
1952 | /* Send SIGTRAP if we're single-stepping */ | |
1953 | if (ptrace_cancel_bpt(current)) | |
1954 | send_sig(SIGTRAP, current, 1); | |
1955 | #endif | |
1956 | ||
1957 | return 0; | |
1958 | } | |
1959 | ||
05390248 | 1960 | static long do_sigreturn_v2(CPUARMState *env) |
a8c33204 PB |
1961 | { |
1962 | abi_ulong frame_addr; | |
978fae9f | 1963 | struct sigframe_v2 *frame = NULL; |
a8c33204 PB |
1964 | |
1965 | /* | |
1966 | * Since we stacked the signal on a 64-bit boundary, | |
1967 | * then 'sp' should be word aligned here. If it's | |
1968 | * not, then the user is trying to mess with us. | |
1969 | */ | |
a8c33204 | 1970 | frame_addr = env->regs[13]; |
978fae9f PM |
1971 | if (frame_addr & 7) { |
1972 | goto badframe; | |
1973 | } | |
1974 | ||
a8c33204 PB |
1975 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1976 | goto badframe; | |
1977 | ||
1978 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) | |
1979 | goto badframe; | |
1980 | ||
1981 | unlock_user_struct(frame, frame_addr, 0); | |
1982 | return env->regs[0]; | |
1983 | ||
1984 | badframe: | |
1985 | unlock_user_struct(frame, frame_addr, 0); | |
66393fb9 | 1986 | force_sig(TARGET_SIGSEGV /* , current */); |
a8c33204 PB |
1987 | return 0; |
1988 | } | |
1989 | ||
05390248 | 1990 | long do_sigreturn(CPUARMState *env) |
a8c33204 PB |
1991 | { |
1992 | if (get_osversion() >= 0x020612) { | |
1993 | return do_sigreturn_v2(env); | |
1994 | } else { | |
1995 | return do_sigreturn_v1(env); | |
1996 | } | |
1997 | } | |
1998 | ||
05390248 | 1999 | static long do_rt_sigreturn_v1(CPUARMState *env) |
43fff238 | 2000 | { |
f8b0aa25 | 2001 | abi_ulong frame_addr; |
978fae9f | 2002 | struct rt_sigframe_v1 *frame = NULL; |
a745ec6d PB |
2003 | sigset_t host_set; |
2004 | ||
2005 | /* | |
2006 | * Since we stacked the signal on a 64-bit boundary, | |
2007 | * then 'sp' should be word aligned here. If it's | |
2008 | * not, then the user is trying to mess with us. | |
2009 | */ | |
a745ec6d | 2010 | frame_addr = env->regs[13]; |
978fae9f PM |
2011 | if (frame_addr & 7) { |
2012 | goto badframe; | |
2013 | } | |
2014 | ||
a745ec6d PB |
2015 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2016 | goto badframe; | |
2017 | ||
2018 | target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); | |
2019 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
2020 | ||
2021 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) | |
2022 | goto badframe; | |
2023 | ||
2024 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) | |
2025 | goto badframe; | |
2026 | ||
2027 | #if 0 | |
2028 | /* Send SIGTRAP if we're single-stepping */ | |
2029 | if (ptrace_cancel_bpt(current)) | |
2030 | send_sig(SIGTRAP, current, 1); | |
2031 | #endif | |
2032 | unlock_user_struct(frame, frame_addr, 0); | |
2033 | return env->regs[0]; | |
2034 | ||
2035 | badframe: | |
2036 | unlock_user_struct(frame, frame_addr, 0); | |
66393fb9 | 2037 | force_sig(TARGET_SIGSEGV /* , current */); |
a745ec6d PB |
2038 | return 0; |
2039 | } | |
2040 | ||
05390248 | 2041 | static long do_rt_sigreturn_v2(CPUARMState *env) |
a745ec6d PB |
2042 | { |
2043 | abi_ulong frame_addr; | |
978fae9f | 2044 | struct rt_sigframe_v2 *frame = NULL; |
43fff238 FB |
2045 | |
2046 | /* | |
2047 | * Since we stacked the signal on a 64-bit boundary, | |
2048 | * then 'sp' should be word aligned here. If it's | |
2049 | * not, then the user is trying to mess with us. | |
2050 | */ | |
f8b0aa25 | 2051 | frame_addr = env->regs[13]; |
978fae9f PM |
2052 | if (frame_addr & 7) { |
2053 | goto badframe; | |
2054 | } | |
2055 | ||
f8b0aa25 FB |
2056 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2057 | goto badframe; | |
43fff238 | 2058 | |
a8c33204 PB |
2059 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) |
2060 | goto badframe; | |
a04e134a | 2061 | |
f8b0aa25 | 2062 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
2063 | return env->regs[0]; |
2064 | ||
2065 | badframe: | |
f8b0aa25 | 2066 | unlock_user_struct(frame, frame_addr, 0); |
66393fb9 | 2067 | force_sig(TARGET_SIGSEGV /* , current */); |
43fff238 FB |
2068 | return 0; |
2069 | } | |
2070 | ||
05390248 | 2071 | long do_rt_sigreturn(CPUARMState *env) |
a745ec6d PB |
2072 | { |
2073 | if (get_osversion() >= 0x020612) { | |
2074 | return do_rt_sigreturn_v2(env); | |
2075 | } else { | |
2076 | return do_rt_sigreturn_v1(env); | |
2077 | } | |
2078 | } | |
2079 | ||
6d5e216d | 2080 | #elif defined(TARGET_SPARC) |
80a9d035 | 2081 | |
6d5e216d FB |
2082 | #define __SUNOS_MAXWIN 31 |
2083 | ||
2084 | /* This is what SunOS does, so shall I. */ | |
2085 | struct target_sigcontext { | |
992f48a0 | 2086 | abi_ulong sigc_onstack; /* state to restore */ |
6d5e216d | 2087 | |
992f48a0 BS |
2088 | abi_ulong sigc_mask; /* sigmask to restore */ |
2089 | abi_ulong sigc_sp; /* stack pointer */ | |
2090 | abi_ulong sigc_pc; /* program counter */ | |
2091 | abi_ulong sigc_npc; /* next program counter */ | |
2092 | abi_ulong sigc_psr; /* for condition codes etc */ | |
2093 | abi_ulong sigc_g1; /* User uses these two registers */ | |
2094 | abi_ulong sigc_o0; /* within the trampoline code. */ | |
6d5e216d FB |
2095 | |
2096 | /* Now comes information regarding the users window set | |
2097 | * at the time of the signal. | |
2098 | */ | |
992f48a0 | 2099 | abi_ulong sigc_oswins; /* outstanding windows */ |
6d5e216d FB |
2100 | |
2101 | /* stack ptrs for each regwin buf */ | |
2102 | char *sigc_spbuf[__SUNOS_MAXWIN]; | |
2103 | ||
2104 | /* Windows to restore after signal */ | |
2105 | struct { | |
992f48a0 BS |
2106 | abi_ulong locals[8]; |
2107 | abi_ulong ins[8]; | |
6d5e216d FB |
2108 | } sigc_wbuf[__SUNOS_MAXWIN]; |
2109 | }; | |
2110 | /* A Sparc stack frame */ | |
2111 | struct sparc_stackf { | |
992f48a0 | 2112 | abi_ulong locals[8]; |
e321c34a PM |
2113 | abi_ulong ins[8]; |
2114 | /* It's simpler to treat fp and callers_pc as elements of ins[] | |
2115 | * since we never need to access them ourselves. | |
2116 | */ | |
6d5e216d | 2117 | char *structptr; |
992f48a0 BS |
2118 | abi_ulong xargs[6]; |
2119 | abi_ulong xxargs[1]; | |
6d5e216d FB |
2120 | }; |
2121 | ||
2122 | typedef struct { | |
2123 | struct { | |
992f48a0 BS |
2124 | abi_ulong psr; |
2125 | abi_ulong pc; | |
2126 | abi_ulong npc; | |
2127 | abi_ulong y; | |
2128 | abi_ulong u_regs[16]; /* globals and ins */ | |
6d5e216d FB |
2129 | } si_regs; |
2130 | int si_mask; | |
2131 | } __siginfo_t; | |
2132 | ||
2133 | typedef struct { | |
8954bae3 | 2134 | abi_ulong si_float_regs[32]; |
6d5e216d FB |
2135 | unsigned long si_fsr; |
2136 | unsigned long si_fpqdepth; | |
2137 | struct { | |
2138 | unsigned long *insn_addr; | |
2139 | unsigned long insn; | |
2140 | } si_fpqueue [16]; | |
c227f099 | 2141 | } qemu_siginfo_fpu_t; |
6d5e216d FB |
2142 | |
2143 | ||
2144 | struct target_signal_frame { | |
2145 | struct sparc_stackf ss; | |
2146 | __siginfo_t info; | |
f8b0aa25 | 2147 | abi_ulong fpu_save; |
992f48a0 BS |
2148 | abi_ulong insns[2] __attribute__ ((aligned (8))); |
2149 | abi_ulong extramask[TARGET_NSIG_WORDS - 1]; | |
2150 | abi_ulong extra_size; /* Should be 0 */ | |
c227f099 | 2151 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
2152 | }; |
2153 | struct target_rt_signal_frame { | |
2154 | struct sparc_stackf ss; | |
2155 | siginfo_t info; | |
992f48a0 | 2156 | abi_ulong regs[20]; |
6d5e216d | 2157 | sigset_t mask; |
f8b0aa25 | 2158 | abi_ulong fpu_save; |
6d5e216d FB |
2159 | unsigned int insns[2]; |
2160 | stack_t stack; | |
2161 | unsigned int extra_size; /* Should be 0 */ | |
c227f099 | 2162 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
2163 | }; |
2164 | ||
e80cfcfc FB |
2165 | #define UREG_O0 16 |
2166 | #define UREG_O6 22 | |
2167 | #define UREG_I0 0 | |
2168 | #define UREG_I1 1 | |
2169 | #define UREG_I2 2 | |
5bfb56b2 BS |
2170 | #define UREG_I3 3 |
2171 | #define UREG_I4 4 | |
2172 | #define UREG_I5 5 | |
e80cfcfc FB |
2173 | #define UREG_I6 6 |
2174 | #define UREG_I7 7 | |
2175 | #define UREG_L0 8 | |
6d5e216d FB |
2176 | #define UREG_FP UREG_I6 |
2177 | #define UREG_SP UREG_O6 | |
2178 | ||
624f7979 | 2179 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, |
05390248 AF |
2180 | CPUSPARCState *env, |
2181 | unsigned long framesize) | |
6d5e216d | 2182 | { |
459a4017 | 2183 | abi_ulong sp; |
6d5e216d FB |
2184 | |
2185 | sp = env->regwptr[UREG_FP]; | |
6d5e216d FB |
2186 | |
2187 | /* This is the X/Open sanctioned signal stack switching. */ | |
624f7979 | 2188 | if (sa->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
2189 | if (!on_sig_stack(sp) |
2190 | && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7)) | |
2191 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
6d5e216d | 2192 | } |
459a4017 | 2193 | return sp - framesize; |
6d5e216d FB |
2194 | } |
2195 | ||
2196 | static int | |
05390248 | 2197 | setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask) |
6d5e216d FB |
2198 | { |
2199 | int err = 0, i; | |
2200 | ||
6d5e216d | 2201 | err |= __put_user(env->psr, &si->si_regs.psr); |
6d5e216d FB |
2202 | err |= __put_user(env->pc, &si->si_regs.pc); |
2203 | err |= __put_user(env->npc, &si->si_regs.npc); | |
2204 | err |= __put_user(env->y, &si->si_regs.y); | |
a315a145 | 2205 | for (i=0; i < 8; i++) { |
6d5e216d FB |
2206 | err |= __put_user(env->gregs[i], &si->si_regs.u_regs[i]); |
2207 | } | |
a315a145 | 2208 | for (i=0; i < 8; i++) { |
e80cfcfc | 2209 | err |= __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]); |
6d5e216d | 2210 | } |
6d5e216d FB |
2211 | err |= __put_user(mask, &si->si_mask); |
2212 | return err; | |
2213 | } | |
e80cfcfc | 2214 | |
80a9d035 | 2215 | #if 0 |
6d5e216d FB |
2216 | static int |
2217 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ | |
05390248 | 2218 | CPUSPARCState *env, unsigned long mask) |
6d5e216d FB |
2219 | { |
2220 | int err = 0; | |
2221 | ||
2222 | err |= __put_user(mask, &sc->sigc_mask); | |
2223 | err |= __put_user(env->regwptr[UREG_SP], &sc->sigc_sp); | |
2224 | err |= __put_user(env->pc, &sc->sigc_pc); | |
2225 | err |= __put_user(env->npc, &sc->sigc_npc); | |
2226 | err |= __put_user(env->psr, &sc->sigc_psr); | |
2227 | err |= __put_user(env->gregs[1], &sc->sigc_g1); | |
2228 | err |= __put_user(env->regwptr[UREG_O0], &sc->sigc_o0); | |
2229 | ||
2230 | return err; | |
2231 | } | |
80a9d035 | 2232 | #endif |
6d5e216d FB |
2233 | #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7))) |
2234 | ||
624f7979 | 2235 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 2236 | target_sigset_t *set, CPUSPARCState *env) |
6d5e216d | 2237 | { |
459a4017 | 2238 | abi_ulong sf_addr; |
6d5e216d FB |
2239 | struct target_signal_frame *sf; |
2240 | int sigframe_size, err, i; | |
2241 | ||
2242 | /* 1. Make sure everything is clean */ | |
2243 | //synchronize_user_stack(); | |
2244 | ||
2245 | sigframe_size = NF_ALIGNEDSZ; | |
459a4017 | 2246 | sf_addr = get_sigframe(ka, env, sigframe_size); |
6d5e216d | 2247 | |
459a4017 FB |
2248 | sf = lock_user(VERIFY_WRITE, sf_addr, |
2249 | sizeof(struct target_signal_frame), 0); | |
2250 | if (!sf) | |
2251 | goto sigsegv; | |
2252 | ||
e80cfcfc | 2253 | //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); |
6d5e216d FB |
2254 | #if 0 |
2255 | if (invalid_frame_pointer(sf, sigframe_size)) | |
2256 | goto sigill_and_return; | |
2257 | #endif | |
2258 | /* 2. Save the current process state */ | |
2259 | err = setup___siginfo(&sf->info, env, set->sig[0]); | |
2260 | err |= __put_user(0, &sf->extra_size); | |
2261 | ||
2262 | //err |= save_fpu_state(regs, &sf->fpu_state); | |
2263 | //err |= __put_user(&sf->fpu_state, &sf->fpu_save); | |
2264 | ||
2265 | err |= __put_user(set->sig[0], &sf->info.si_mask); | |
2266 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
2267 | err |= __put_user(set->sig[i + 1], &sf->extramask[i]); | |
2268 | } | |
2269 | ||
a315a145 | 2270 | for (i = 0; i < 8; i++) { |
e80cfcfc | 2271 | err |= __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]); |
6d5e216d | 2272 | } |
a315a145 | 2273 | for (i = 0; i < 8; i++) { |
e80cfcfc | 2274 | err |= __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]); |
6d5e216d | 2275 | } |
6d5e216d FB |
2276 | if (err) |
2277 | goto sigsegv; | |
2278 | ||
2279 | /* 3. signal handler back-trampoline and parameters */ | |
459a4017 | 2280 | env->regwptr[UREG_FP] = sf_addr; |
6d5e216d | 2281 | env->regwptr[UREG_I0] = sig; |
459a4017 FB |
2282 | env->regwptr[UREG_I1] = sf_addr + |
2283 | offsetof(struct target_signal_frame, info); | |
2284 | env->regwptr[UREG_I2] = sf_addr + | |
2285 | offsetof(struct target_signal_frame, info); | |
6d5e216d FB |
2286 | |
2287 | /* 4. signal handler */ | |
624f7979 | 2288 | env->pc = ka->_sa_handler; |
6d5e216d FB |
2289 | env->npc = (env->pc + 4); |
2290 | /* 5. return to kernel instructions */ | |
624f7979 PB |
2291 | if (ka->sa_restorer) |
2292 | env->regwptr[UREG_I7] = ka->sa_restorer; | |
6d5e216d | 2293 | else { |
775b58d8 | 2294 | uint32_t val32; |
459a4017 FB |
2295 | |
2296 | env->regwptr[UREG_I7] = sf_addr + | |
2297 | offsetof(struct target_signal_frame, insns) - 2 * 4; | |
6d5e216d FB |
2298 | |
2299 | /* mov __NR_sigreturn, %g1 */ | |
775b58d8 FB |
2300 | val32 = 0x821020d8; |
2301 | err |= __put_user(val32, &sf->insns[0]); | |
6d5e216d FB |
2302 | |
2303 | /* t 0x10 */ | |
775b58d8 FB |
2304 | val32 = 0x91d02010; |
2305 | err |= __put_user(val32, &sf->insns[1]); | |
6d5e216d FB |
2306 | if (err) |
2307 | goto sigsegv; | |
2308 | ||
2309 | /* Flush instruction space. */ | |
2310 | //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0])); | |
80a9d035 | 2311 | // tb_flush(env); |
6d5e216d | 2312 | } |
459a4017 | 2313 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d | 2314 | return; |
459a4017 FB |
2315 | #if 0 |
2316 | sigill_and_return: | |
6d5e216d | 2317 | force_sig(TARGET_SIGILL); |
459a4017 | 2318 | #endif |
6d5e216d | 2319 | sigsegv: |
e80cfcfc | 2320 | //fprintf(stderr, "force_sig\n"); |
459a4017 | 2321 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d FB |
2322 | force_sig(TARGET_SIGSEGV); |
2323 | } | |
2324 | static inline int | |
05390248 | 2325 | restore_fpu_state(CPUSPARCState *env, qemu_siginfo_fpu_t *fpu) |
6d5e216d FB |
2326 | { |
2327 | int err; | |
2328 | #if 0 | |
2329 | #ifdef CONFIG_SMP | |
2330 | if (current->flags & PF_USEDFPU) | |
2331 | regs->psr &= ~PSR_EF; | |
2332 | #else | |
2333 | if (current == last_task_used_math) { | |
2334 | last_task_used_math = 0; | |
2335 | regs->psr &= ~PSR_EF; | |
2336 | } | |
2337 | #endif | |
2338 | current->used_math = 1; | |
2339 | current->flags &= ~PF_USEDFPU; | |
2340 | #endif | |
2341 | #if 0 | |
2342 | if (verify_area (VERIFY_READ, fpu, sizeof(*fpu))) | |
2343 | return -EFAULT; | |
2344 | #endif | |
2345 | ||
fafffaef | 2346 | /* XXX: incorrect */ |
8954bae3 BS |
2347 | err = copy_from_user(&env->fpr[0], fpu->si_float_regs[0], |
2348 | (sizeof(abi_ulong) * 32)); | |
6d5e216d FB |
2349 | err |= __get_user(env->fsr, &fpu->si_fsr); |
2350 | #if 0 | |
2351 | err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth); | |
2352 | if (current->thread.fpqdepth != 0) | |
2353 | err |= __copy_from_user(¤t->thread.fpqueue[0], | |
2354 | &fpu->si_fpqueue[0], | |
2355 | ((sizeof(unsigned long) + | |
2356 | (sizeof(unsigned long *)))*16)); | |
2357 | #endif | |
2358 | return err; | |
2359 | } | |
2360 | ||
2361 | ||
624f7979 | 2362 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 2363 | target_siginfo_t *info, |
05390248 | 2364 | target_sigset_t *set, CPUSPARCState *env) |
6d5e216d FB |
2365 | { |
2366 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2367 | } | |
2368 | ||
05390248 | 2369 | long do_sigreturn(CPUSPARCState *env) |
6d5e216d | 2370 | { |
f8b0aa25 | 2371 | abi_ulong sf_addr; |
6d5e216d | 2372 | struct target_signal_frame *sf; |
e80cfcfc | 2373 | uint32_t up_psr, pc, npc; |
c227f099 | 2374 | target_sigset_t set; |
e80cfcfc | 2375 | sigset_t host_set; |
e80cfcfc | 2376 | int err, i; |
6d5e216d | 2377 | |
f8b0aa25 FB |
2378 | sf_addr = env->regwptr[UREG_FP]; |
2379 | if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) | |
2380 | goto segv_and_exit; | |
80a9d035 | 2381 | #if 0 |
e80cfcfc FB |
2382 | fprintf(stderr, "sigreturn\n"); |
2383 | fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); | |
80a9d035 | 2384 | #endif |
e80cfcfc | 2385 | //cpu_dump_state(env, stderr, fprintf, 0); |
6d5e216d FB |
2386 | |
2387 | /* 1. Make sure we are not getting garbage from the user */ | |
6d5e216d | 2388 | |
f8b0aa25 | 2389 | if (sf_addr & 3) |
6d5e216d FB |
2390 | goto segv_and_exit; |
2391 | ||
2392 | err = __get_user(pc, &sf->info.si_regs.pc); | |
2393 | err |= __get_user(npc, &sf->info.si_regs.npc); | |
2394 | ||
6d5e216d FB |
2395 | if ((pc | npc) & 3) |
2396 | goto segv_and_exit; | |
2397 | ||
2398 | /* 2. Restore the state */ | |
e80cfcfc FB |
2399 | err |= __get_user(up_psr, &sf->info.si_regs.psr); |
2400 | ||
6d5e216d | 2401 | /* User can only change condition codes and FPU enabling in %psr. */ |
a315a145 FB |
2402 | env->psr = (up_psr & (PSR_ICC /* | PSR_EF */)) |
2403 | | (env->psr & ~(PSR_ICC /* | PSR_EF */)); | |
2404 | ||
2405 | env->pc = pc; | |
2406 | env->npc = npc; | |
e80cfcfc | 2407 | err |= __get_user(env->y, &sf->info.si_regs.y); |
a315a145 | 2408 | for (i=0; i < 8; i++) { |
e80cfcfc FB |
2409 | err |= __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]); |
2410 | } | |
a315a145 | 2411 | for (i=0; i < 8; i++) { |
e80cfcfc FB |
2412 | err |= __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]); |
2413 | } | |
6d5e216d | 2414 | |
2aec3a27 PM |
2415 | /* FIXME: implement FPU save/restore: |
2416 | * __get_user(fpu_save, &sf->fpu_save); | |
2417 | * if (fpu_save) | |
2418 | * err |= restore_fpu_state(env, fpu_save); | |
2419 | */ | |
6d5e216d FB |
2420 | |
2421 | /* This is pretty much atomic, no amount locking would prevent | |
2422 | * the races which exist anyways. | |
2423 | */ | |
2424 | err |= __get_user(set.sig[0], &sf->info.si_mask); | |
e80cfcfc FB |
2425 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
2426 | err |= (__get_user(set.sig[i], &sf->extramask[i - 1])); | |
2427 | } | |
2428 | ||
2429 | target_to_host_sigset_internal(&host_set, &set); | |
2430 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
6d5e216d FB |
2431 | |
2432 | if (err) | |
2433 | goto segv_and_exit; | |
f8b0aa25 | 2434 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
2435 | return env->regwptr[0]; |
2436 | ||
2437 | segv_and_exit: | |
f8b0aa25 | 2438 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
2439 | force_sig(TARGET_SIGSEGV); |
2440 | } | |
2441 | ||
05390248 | 2442 | long do_rt_sigreturn(CPUSPARCState *env) |
6d5e216d FB |
2443 | { |
2444 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2445 | return -TARGET_ENOSYS; |
6d5e216d FB |
2446 | } |
2447 | ||
459a4017 | 2448 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) |
5bfb56b2 BS |
2449 | #define MC_TSTATE 0 |
2450 | #define MC_PC 1 | |
2451 | #define MC_NPC 2 | |
2452 | #define MC_Y 3 | |
2453 | #define MC_G1 4 | |
2454 | #define MC_G2 5 | |
2455 | #define MC_G3 6 | |
2456 | #define MC_G4 7 | |
2457 | #define MC_G5 8 | |
2458 | #define MC_G6 9 | |
2459 | #define MC_G7 10 | |
2460 | #define MC_O0 11 | |
2461 | #define MC_O1 12 | |
2462 | #define MC_O2 13 | |
2463 | #define MC_O3 14 | |
2464 | #define MC_O4 15 | |
2465 | #define MC_O5 16 | |
2466 | #define MC_O6 17 | |
2467 | #define MC_O7 18 | |
2468 | #define MC_NGREG 19 | |
2469 | ||
c227f099 AL |
2470 | typedef abi_ulong target_mc_greg_t; |
2471 | typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG]; | |
5bfb56b2 BS |
2472 | |
2473 | struct target_mc_fq { | |
992f48a0 | 2474 | abi_ulong *mcfq_addr; |
5bfb56b2 BS |
2475 | uint32_t mcfq_insn; |
2476 | }; | |
2477 | ||
2478 | struct target_mc_fpu { | |
2479 | union { | |
2480 | uint32_t sregs[32]; | |
2481 | uint64_t dregs[32]; | |
2482 | //uint128_t qregs[16]; | |
2483 | } mcfpu_fregs; | |
992f48a0 BS |
2484 | abi_ulong mcfpu_fsr; |
2485 | abi_ulong mcfpu_fprs; | |
2486 | abi_ulong mcfpu_gsr; | |
5bfb56b2 BS |
2487 | struct target_mc_fq *mcfpu_fq; |
2488 | unsigned char mcfpu_qcnt; | |
2489 | unsigned char mcfpu_qentsz; | |
2490 | unsigned char mcfpu_enab; | |
2491 | }; | |
c227f099 | 2492 | typedef struct target_mc_fpu target_mc_fpu_t; |
5bfb56b2 BS |
2493 | |
2494 | typedef struct { | |
c227f099 AL |
2495 | target_mc_gregset_t mc_gregs; |
2496 | target_mc_greg_t mc_fp; | |
2497 | target_mc_greg_t mc_i7; | |
2498 | target_mc_fpu_t mc_fpregs; | |
2499 | } target_mcontext_t; | |
5bfb56b2 BS |
2500 | |
2501 | struct target_ucontext { | |
60e99246 AJ |
2502 | struct target_ucontext *tuc_link; |
2503 | abi_ulong tuc_flags; | |
2504 | target_sigset_t tuc_sigmask; | |
2505 | target_mcontext_t tuc_mcontext; | |
5bfb56b2 BS |
2506 | }; |
2507 | ||
2508 | /* A V9 register window */ | |
2509 | struct target_reg_window { | |
992f48a0 BS |
2510 | abi_ulong locals[8]; |
2511 | abi_ulong ins[8]; | |
5bfb56b2 BS |
2512 | }; |
2513 | ||
2514 | #define TARGET_STACK_BIAS 2047 | |
2515 | ||
2516 | /* {set, get}context() needed for 64-bit SparcLinux userland. */ | |
2517 | void sparc64_set_context(CPUSPARCState *env) | |
2518 | { | |
459a4017 FB |
2519 | abi_ulong ucp_addr; |
2520 | struct target_ucontext *ucp; | |
c227f099 | 2521 | target_mc_gregset_t *grp; |
992f48a0 | 2522 | abi_ulong pc, npc, tstate; |
459a4017 | 2523 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2524 | int err; |
2525 | unsigned int i; | |
5bfb56b2 | 2526 | |
459a4017 FB |
2527 | ucp_addr = env->regwptr[UREG_I0]; |
2528 | if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) | |
2529 | goto do_sigsegv; | |
60e99246 | 2530 | grp = &ucp->tuc_mcontext.mc_gregs; |
579a97f7 FB |
2531 | err = __get_user(pc, &((*grp)[MC_PC])); |
2532 | err |= __get_user(npc, &((*grp)[MC_NPC])); | |
5bfb56b2 BS |
2533 | if (err || ((pc | npc) & 3)) |
2534 | goto do_sigsegv; | |
2535 | if (env->regwptr[UREG_I1]) { | |
c227f099 | 2536 | target_sigset_t target_set; |
5bfb56b2 BS |
2537 | sigset_t set; |
2538 | ||
2539 | if (TARGET_NSIG_WORDS == 1) { | |
60e99246 | 2540 | if (__get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0])) |
5bfb56b2 BS |
2541 | goto do_sigsegv; |
2542 | } else { | |
459a4017 | 2543 | abi_ulong *src, *dst; |
60e99246 | 2544 | src = ucp->tuc_sigmask.sig; |
459a4017 | 2545 | dst = target_set.sig; |
0d9e61c2 | 2546 | for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) { |
459a4017 | 2547 | err |= __get_user(*dst, src); |
0d9e61c2 | 2548 | } |
5bfb56b2 BS |
2549 | if (err) |
2550 | goto do_sigsegv; | |
2551 | } | |
2552 | target_to_host_sigset_internal(&set, &target_set); | |
2553 | sigprocmask(SIG_SETMASK, &set, NULL); | |
2554 | } | |
2555 | env->pc = pc; | |
2556 | env->npc = npc; | |
579a97f7 FB |
2557 | err |= __get_user(env->y, &((*grp)[MC_Y])); |
2558 | err |= __get_user(tstate, &((*grp)[MC_TSTATE])); | |
5bfb56b2 | 2559 | env->asi = (tstate >> 24) & 0xff; |
5a834bb4 BS |
2560 | cpu_put_ccr(env, tstate >> 32); |
2561 | cpu_put_cwp64(env, tstate & 0x1f); | |
579a97f7 FB |
2562 | err |= __get_user(env->gregs[1], (&(*grp)[MC_G1])); |
2563 | err |= __get_user(env->gregs[2], (&(*grp)[MC_G2])); | |
2564 | err |= __get_user(env->gregs[3], (&(*grp)[MC_G3])); | |
2565 | err |= __get_user(env->gregs[4], (&(*grp)[MC_G4])); | |
2566 | err |= __get_user(env->gregs[5], (&(*grp)[MC_G5])); | |
2567 | err |= __get_user(env->gregs[6], (&(*grp)[MC_G6])); | |
2568 | err |= __get_user(env->gregs[7], (&(*grp)[MC_G7])); | |
2569 | err |= __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0])); | |
2570 | err |= __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1])); | |
2571 | err |= __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2])); | |
2572 | err |= __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3])); | |
2573 | err |= __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4])); | |
2574 | err |= __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5])); | |
2575 | err |= __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6])); | |
2576 | err |= __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7])); | |
2577 | ||
60e99246 AJ |
2578 | err |= __get_user(fp, &(ucp->tuc_mcontext.mc_fp)); |
2579 | err |= __get_user(i7, &(ucp->tuc_mcontext.mc_i7)); | |
579a97f7 | 2580 | |
459a4017 FB |
2581 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2582 | if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2583 | abi_ulong) != 0) | |
2584 | goto do_sigsegv; | |
2585 | if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2586 | abi_ulong) != 0) | |
2587 | goto do_sigsegv; | |
c7b016ba PM |
2588 | /* FIXME this does not match how the kernel handles the FPU in |
2589 | * its sparc64_set_context implementation. In particular the FPU | |
2590 | * is only restored if fenab is non-zero in: | |
2591 | * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab)); | |
2592 | */ | |
60e99246 | 2593 | err |= __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs)); |
459a4017 | 2594 | { |
30038fd8 RH |
2595 | uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
2596 | for (i = 0; i < 64; i++, src++) { | |
2597 | if (i & 1) { | |
2598 | err |= __get_user(env->fpr[i/2].l.lower, src); | |
2599 | } else { | |
2600 | err |= __get_user(env->fpr[i/2].l.upper, src); | |
2601 | } | |
2602 | } | |
459a4017 | 2603 | } |
579a97f7 | 2604 | err |= __get_user(env->fsr, |
60e99246 | 2605 | &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr)); |
579a97f7 | 2606 | err |= __get_user(env->gsr, |
60e99246 | 2607 | &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr)); |
5bfb56b2 BS |
2608 | if (err) |
2609 | goto do_sigsegv; | |
459a4017 | 2610 | unlock_user_struct(ucp, ucp_addr, 0); |
5bfb56b2 BS |
2611 | return; |
2612 | do_sigsegv: | |
459a4017 | 2613 | unlock_user_struct(ucp, ucp_addr, 0); |
66393fb9 | 2614 | force_sig(TARGET_SIGSEGV); |
5bfb56b2 BS |
2615 | } |
2616 | ||
2617 | void sparc64_get_context(CPUSPARCState *env) | |
2618 | { | |
459a4017 FB |
2619 | abi_ulong ucp_addr; |
2620 | struct target_ucontext *ucp; | |
c227f099 AL |
2621 | target_mc_gregset_t *grp; |
2622 | target_mcontext_t *mcp; | |
459a4017 | 2623 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2624 | int err; |
2625 | unsigned int i; | |
c227f099 | 2626 | target_sigset_t target_set; |
5bfb56b2 BS |
2627 | sigset_t set; |
2628 | ||
459a4017 FB |
2629 | ucp_addr = env->regwptr[UREG_I0]; |
2630 | if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) | |
2631 | goto do_sigsegv; | |
2632 | ||
60e99246 | 2633 | mcp = &ucp->tuc_mcontext; |
5bfb56b2 BS |
2634 | grp = &mcp->mc_gregs; |
2635 | ||
2636 | /* Skip over the trap instruction, first. */ | |
2637 | env->pc = env->npc; | |
2638 | env->npc += 4; | |
2639 | ||
2640 | err = 0; | |
2641 | ||
2642 | sigprocmask(0, NULL, &set); | |
2643 | host_to_target_sigset_internal(&target_set, &set); | |
459a4017 | 2644 | if (TARGET_NSIG_WORDS == 1) { |
579a97f7 | 2645 | err |= __put_user(target_set.sig[0], |
60e99246 | 2646 | (abi_ulong *)&ucp->tuc_sigmask); |
459a4017 FB |
2647 | } else { |
2648 | abi_ulong *src, *dst; | |
2649 | src = target_set.sig; | |
60e99246 | 2650 | dst = ucp->tuc_sigmask.sig; |
0d9e61c2 | 2651 | for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) { |
459a4017 | 2652 | err |= __put_user(*src, dst); |
0d9e61c2 | 2653 | } |
5bfb56b2 BS |
2654 | if (err) |
2655 | goto do_sigsegv; | |
2656 | } | |
2657 | ||
459a4017 FB |
2658 | /* XXX: tstate must be saved properly */ |
2659 | // err |= __put_user(env->tstate, &((*grp)[MC_TSTATE])); | |
579a97f7 FB |
2660 | err |= __put_user(env->pc, &((*grp)[MC_PC])); |
2661 | err |= __put_user(env->npc, &((*grp)[MC_NPC])); | |
2662 | err |= __put_user(env->y, &((*grp)[MC_Y])); | |
2663 | err |= __put_user(env->gregs[1], &((*grp)[MC_G1])); | |
2664 | err |= __put_user(env->gregs[2], &((*grp)[MC_G2])); | |
2665 | err |= __put_user(env->gregs[3], &((*grp)[MC_G3])); | |
2666 | err |= __put_user(env->gregs[4], &((*grp)[MC_G4])); | |
2667 | err |= __put_user(env->gregs[5], &((*grp)[MC_G5])); | |
2668 | err |= __put_user(env->gregs[6], &((*grp)[MC_G6])); | |
2669 | err |= __put_user(env->gregs[7], &((*grp)[MC_G7])); | |
2670 | err |= __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0])); | |
2671 | err |= __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1])); | |
2672 | err |= __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2])); | |
2673 | err |= __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3])); | |
2674 | err |= __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4])); | |
2675 | err |= __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5])); | |
2676 | err |= __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6])); | |
2677 | err |= __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7])); | |
2678 | ||
459a4017 FB |
2679 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2680 | fp = i7 = 0; | |
2681 | if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2682 | abi_ulong) != 0) | |
2683 | goto do_sigsegv; | |
2684 | if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2685 | abi_ulong) != 0) | |
2686 | goto do_sigsegv; | |
579a97f7 FB |
2687 | err |= __put_user(fp, &(mcp->mc_fp)); |
2688 | err |= __put_user(i7, &(mcp->mc_i7)); | |
5bfb56b2 | 2689 | |
459a4017 | 2690 | { |
30038fd8 RH |
2691 | uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
2692 | for (i = 0; i < 64; i++, dst++) { | |
2693 | if (i & 1) { | |
2694 | err |= __put_user(env->fpr[i/2].l.lower, dst); | |
2695 | } else { | |
2696 | err |= __put_user(env->fpr[i/2].l.upper, dst); | |
2697 | } | |
2698 | } | |
459a4017 | 2699 | } |
579a97f7 FB |
2700 | err |= __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); |
2701 | err |= __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); | |
2702 | err |= __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs)); | |
5bfb56b2 BS |
2703 | |
2704 | if (err) | |
2705 | goto do_sigsegv; | |
459a4017 | 2706 | unlock_user_struct(ucp, ucp_addr, 1); |
5bfb56b2 BS |
2707 | return; |
2708 | do_sigsegv: | |
459a4017 | 2709 | unlock_user_struct(ucp, ucp_addr, 1); |
66393fb9 | 2710 | force_sig(TARGET_SIGSEGV); |
5bfb56b2 BS |
2711 | } |
2712 | #endif | |
ff970904 | 2713 | #elif defined(TARGET_MIPS) || defined(TARGET_MIPS64) |
106ec879 | 2714 | |
ff970904 | 2715 | # if defined(TARGET_ABI_MIPSO32) |
106ec879 FB |
2716 | struct target_sigcontext { |
2717 | uint32_t sc_regmask; /* Unused */ | |
2718 | uint32_t sc_status; | |
2719 | uint64_t sc_pc; | |
2720 | uint64_t sc_regs[32]; | |
2721 | uint64_t sc_fpregs[32]; | |
2722 | uint32_t sc_ownedfp; /* Unused */ | |
2723 | uint32_t sc_fpc_csr; | |
2724 | uint32_t sc_fpc_eir; /* Unused */ | |
2725 | uint32_t sc_used_math; | |
2726 | uint32_t sc_dsp; /* dsp status, was sc_ssflags */ | |
94c5495d | 2727 | uint32_t pad0; |
106ec879 FB |
2728 | uint64_t sc_mdhi; |
2729 | uint64_t sc_mdlo; | |
2730 | target_ulong sc_hi1; /* Was sc_cause */ | |
2731 | target_ulong sc_lo1; /* Was sc_badvaddr */ | |
2732 | target_ulong sc_hi2; /* Was sc_sigset[4] */ | |
2733 | target_ulong sc_lo2; | |
2734 | target_ulong sc_hi3; | |
2735 | target_ulong sc_lo3; | |
2736 | }; | |
ff970904 RH |
2737 | # else /* N32 || N64 */ |
2738 | struct target_sigcontext { | |
2739 | uint64_t sc_regs[32]; | |
2740 | uint64_t sc_fpregs[32]; | |
2741 | uint64_t sc_mdhi; | |
2742 | uint64_t sc_hi1; | |
2743 | uint64_t sc_hi2; | |
2744 | uint64_t sc_hi3; | |
2745 | uint64_t sc_mdlo; | |
2746 | uint64_t sc_lo1; | |
2747 | uint64_t sc_lo2; | |
2748 | uint64_t sc_lo3; | |
2749 | uint64_t sc_pc; | |
2750 | uint32_t sc_fpc_csr; | |
2751 | uint32_t sc_used_math; | |
2752 | uint32_t sc_dsp; | |
2753 | uint32_t sc_reserved; | |
2754 | }; | |
2755 | # endif /* O32 */ | |
106ec879 FB |
2756 | |
2757 | struct sigframe { | |
2758 | uint32_t sf_ass[4]; /* argument save space for o32 */ | |
2759 | uint32_t sf_code[2]; /* signal trampoline */ | |
2760 | struct target_sigcontext sf_sc; | |
c227f099 | 2761 | target_sigset_t sf_mask; |
106ec879 FB |
2762 | }; |
2763 | ||
0b1bcb00 | 2764 | struct target_ucontext { |
60e99246 AJ |
2765 | target_ulong tuc_flags; |
2766 | target_ulong tuc_link; | |
2767 | target_stack_t tuc_stack; | |
94c5495d | 2768 | target_ulong pad0; |
60e99246 AJ |
2769 | struct target_sigcontext tuc_mcontext; |
2770 | target_sigset_t tuc_sigmask; | |
0b1bcb00 PB |
2771 | }; |
2772 | ||
2773 | struct target_rt_sigframe { | |
2774 | uint32_t rs_ass[4]; /* argument save space for o32 */ | |
2775 | uint32_t rs_code[2]; /* signal trampoline */ | |
2776 | struct target_siginfo rs_info; | |
2777 | struct target_ucontext rs_uc; | |
2778 | }; | |
2779 | ||
106ec879 FB |
2780 | /* Install trampoline to jump back from signal handler */ |
2781 | static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall) | |
2782 | { | |
084d0497 | 2783 | int err = 0; |
106ec879 FB |
2784 | |
2785 | /* | |
084d0497 RH |
2786 | * Set up the return code ... |
2787 | * | |
2788 | * li v0, __NR__foo_sigreturn | |
2789 | * syscall | |
2790 | */ | |
106ec879 | 2791 | |
084d0497 | 2792 | err |= __put_user(0x24020000 + syscall, tramp + 0); |
106ec879 | 2793 | err |= __put_user(0x0000000c , tramp + 1); |
106ec879 FB |
2794 | return err; |
2795 | } | |
2796 | ||
2797 | static inline int | |
05390248 | 2798 | setup_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc) |
106ec879 FB |
2799 | { |
2800 | int err = 0; | |
084d0497 | 2801 | int i; |
106ec879 | 2802 | |
1239b472 KCY |
2803 | err |= __put_user(exception_resume_pc(regs), &sc->sc_pc); |
2804 | regs->hflags &= ~MIPS_HFLAG_BMASK; | |
106ec879 | 2805 | |
084d0497 RH |
2806 | __put_user(0, &sc->sc_regs[0]); |
2807 | for (i = 1; i < 32; ++i) { | |
2808 | err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); | |
2809 | } | |
106ec879 | 2810 | |
b5dc7732 TS |
2811 | err |= __put_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2812 | err |= __put_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2813 | |
084d0497 RH |
2814 | /* Rather than checking for dsp existence, always copy. The storage |
2815 | would just be garbage otherwise. */ | |
2816 | err |= __put_user(regs->active_tc.HI[1], &sc->sc_hi1); | |
2817 | err |= __put_user(regs->active_tc.HI[2], &sc->sc_hi2); | |
2818 | err |= __put_user(regs->active_tc.HI[3], &sc->sc_hi3); | |
2819 | err |= __put_user(regs->active_tc.LO[1], &sc->sc_lo1); | |
2820 | err |= __put_user(regs->active_tc.LO[2], &sc->sc_lo2); | |
2821 | err |= __put_user(regs->active_tc.LO[3], &sc->sc_lo3); | |
2822 | { | |
2823 | uint32_t dsp = cpu_rddsp(0x3ff, regs); | |
2824 | err |= __put_user(dsp, &sc->sc_dsp); | |
106ec879 | 2825 | } |
106ec879 | 2826 | |
084d0497 | 2827 | err |= __put_user(1, &sc->sc_used_math); |
106ec879 | 2828 | |
084d0497 RH |
2829 | for (i = 0; i < 32; ++i) { |
2830 | err |= __put_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]); | |
106ec879 | 2831 | } |
106ec879 | 2832 | |
106ec879 FB |
2833 | return err; |
2834 | } | |
2835 | ||
2836 | static inline int | |
05390248 | 2837 | restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc) |
106ec879 FB |
2838 | { |
2839 | int err = 0; | |
084d0497 | 2840 | int i; |
106ec879 FB |
2841 | |
2842 | err |= __get_user(regs->CP0_EPC, &sc->sc_pc); | |
2843 | ||
b5dc7732 TS |
2844 | err |= __get_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2845 | err |= __get_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2846 | |
084d0497 RH |
2847 | for (i = 1; i < 32; ++i) { |
2848 | err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); | |
106ec879 | 2849 | } |
106ec879 | 2850 | |
084d0497 RH |
2851 | err |= __get_user(regs->active_tc.HI[1], &sc->sc_hi1); |
2852 | err |= __get_user(regs->active_tc.HI[2], &sc->sc_hi2); | |
2853 | err |= __get_user(regs->active_tc.HI[3], &sc->sc_hi3); | |
2854 | err |= __get_user(regs->active_tc.LO[1], &sc->sc_lo1); | |
2855 | err |= __get_user(regs->active_tc.LO[2], &sc->sc_lo2); | |
2856 | err |= __get_user(regs->active_tc.LO[3], &sc->sc_lo3); | |
2857 | { | |
2858 | uint32_t dsp; | |
2859 | err |= __get_user(dsp, &sc->sc_dsp); | |
2860 | cpu_wrdsp(dsp, 0x3ff, regs); | |
2861 | } | |
106ec879 | 2862 | |
084d0497 RH |
2863 | for (i = 0; i < 32; ++i) { |
2864 | err |= __get_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]); | |
106ec879 FB |
2865 | } |
2866 | ||
106ec879 FB |
2867 | return err; |
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 | ||
2920 | if(setup_sigcontext(regs, &frame->sf_sc)) | |
2921 | goto give_sigsegv; | |
2922 | ||
2923 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
2924 | if(__put_user(set->sig[i], &frame->sf_mask.sig[i])) | |
2925 | goto give_sigsegv; | |
2926 | } | |
2927 | ||
2928 | /* | |
2929 | * Arguments to signal handler: | |
2930 | * | |
2931 | * a0 = signal number | |
2932 | * a1 = 0 (should be cause) | |
2933 | * a2 = pointer to struct sigcontext | |
2934 | * | |
2935 | * $25 and PC point to the signal handler, $29 points to the | |
2936 | * struct sigframe. | |
2937 | */ | |
b5dc7732 TS |
2938 | regs->active_tc.gpr[ 4] = sig; |
2939 | regs->active_tc.gpr[ 5] = 0; | |
2940 | regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc); | |
2941 | regs->active_tc.gpr[29] = frame_addr; | |
2942 | regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code); | |
106ec879 FB |
2943 | /* The original kernel code sets CP0_EPC to the handler |
2944 | * since it returns to userland using eret | |
2945 | * we cannot do this here, and we must set PC directly */ | |
b5dc7732 | 2946 | regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler; |
ea3164aa | 2947 | mips_set_hflags_isa_mode_from_pc(regs); |
579a97f7 | 2948 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 FB |
2949 | return; |
2950 | ||
2951 | give_sigsegv: | |
579a97f7 | 2952 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 | 2953 | force_sig(TARGET_SIGSEGV/*, current*/); |
106ec879 FB |
2954 | } |
2955 | ||
05390248 | 2956 | long do_sigreturn(CPUMIPSState *regs) |
106ec879 | 2957 | { |
388bb21a | 2958 | struct sigframe *frame; |
579a97f7 | 2959 | abi_ulong frame_addr; |
388bb21a | 2960 | sigset_t blocked; |
c227f099 | 2961 | target_sigset_t target_set; |
388bb21a | 2962 | int i; |
106ec879 FB |
2963 | |
2964 | #if defined(DEBUG_SIGNAL) | |
388bb21a | 2965 | fprintf(stderr, "do_sigreturn\n"); |
106ec879 | 2966 | #endif |
b5dc7732 | 2967 | frame_addr = regs->active_tc.gpr[29]; |
579a97f7 | 2968 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
106ec879 FB |
2969 | goto badframe; |
2970 | ||
388bb21a | 2971 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
106ec879 FB |
2972 | if(__get_user(target_set.sig[i], &frame->sf_mask.sig[i])) |
2973 | goto badframe; | |
388bb21a | 2974 | } |
106ec879 | 2975 | |
388bb21a TS |
2976 | target_to_host_sigset_internal(&blocked, &target_set); |
2977 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
106ec879 | 2978 | |
388bb21a | 2979 | if (restore_sigcontext(regs, &frame->sf_sc)) |
106ec879 FB |
2980 | goto badframe; |
2981 | ||
2982 | #if 0 | |
388bb21a TS |
2983 | /* |
2984 | * Don't let your children do this ... | |
2985 | */ | |
2986 | __asm__ __volatile__( | |
106ec879 FB |
2987 | "move\t$29, %0\n\t" |
2988 | "j\tsyscall_exit" | |
2989 | :/* no outputs */ | |
2990 | :"r" (®s)); | |
388bb21a | 2991 | /* Unreached */ |
106ec879 | 2992 | #endif |
3b46e624 | 2993 | |
b5dc7732 | 2994 | regs->active_tc.PC = regs->CP0_EPC; |
ea3164aa | 2995 | mips_set_hflags_isa_mode_from_pc(regs); |
388bb21a | 2996 | /* I am not sure this is right, but it seems to work |
106ec879 FB |
2997 | * maybe a problem with nested signals ? */ |
2998 | regs->CP0_EPC = 0; | |
0b1bcb00 | 2999 | return -TARGET_QEMU_ESIGRETURN; |
106ec879 FB |
3000 | |
3001 | badframe: | |
388bb21a TS |
3002 | force_sig(TARGET_SIGSEGV/*, current*/); |
3003 | return 0; | |
106ec879 | 3004 | } |
ff970904 | 3005 | # endif /* O32 */ |
106ec879 | 3006 | |
624f7979 | 3007 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3008 | target_siginfo_t *info, |
05390248 | 3009 | target_sigset_t *set, CPUMIPSState *env) |
106ec879 | 3010 | { |
0b1bcb00 PB |
3011 | struct target_rt_sigframe *frame; |
3012 | abi_ulong frame_addr; | |
3013 | int i; | |
3014 | ||
3015 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
3016 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3017 | goto give_sigsegv; | |
3018 | ||
3019 | install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn); | |
3020 | ||
3021 | copy_siginfo_to_user(&frame->rs_info, info); | |
3022 | ||
60e99246 AJ |
3023 | __put_user(0, &frame->rs_uc.tuc_flags); |
3024 | __put_user(0, &frame->rs_uc.tuc_link); | |
3025 | __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp); | |
3026 | __put_user(target_sigaltstack_used.ss_size, &frame->rs_uc.tuc_stack.ss_size); | |
0b1bcb00 | 3027 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
60e99246 | 3028 | &frame->rs_uc.tuc_stack.ss_flags); |
0b1bcb00 | 3029 | |
60e99246 | 3030 | setup_sigcontext(env, &frame->rs_uc.tuc_mcontext); |
0b1bcb00 PB |
3031 | |
3032 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
60e99246 | 3033 | __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]); |
0b1bcb00 PB |
3034 | } |
3035 | ||
3036 | /* | |
3037 | * Arguments to signal handler: | |
3038 | * | |
3039 | * a0 = signal number | |
02d2bd5d | 3040 | * a1 = pointer to siginfo_t |
0b1bcb00 PB |
3041 | * a2 = pointer to struct ucontext |
3042 | * | |
3043 | * $25 and PC point to the signal handler, $29 points to the | |
3044 | * struct sigframe. | |
3045 | */ | |
3046 | env->active_tc.gpr[ 4] = sig; | |
3047 | env->active_tc.gpr[ 5] = frame_addr | |
3048 | + offsetof(struct target_rt_sigframe, rs_info); | |
3049 | env->active_tc.gpr[ 6] = frame_addr | |
3050 | + offsetof(struct target_rt_sigframe, rs_uc); | |
3051 | env->active_tc.gpr[29] = frame_addr; | |
3052 | env->active_tc.gpr[31] = frame_addr | |
3053 | + offsetof(struct target_rt_sigframe, rs_code); | |
3054 | /* The original kernel code sets CP0_EPC to the handler | |
3055 | * since it returns to userland using eret | |
3056 | * we cannot do this here, and we must set PC directly */ | |
3057 | env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler; | |
ea3164aa | 3058 | mips_set_hflags_isa_mode_from_pc(env); |
0b1bcb00 PB |
3059 | unlock_user_struct(frame, frame_addr, 1); |
3060 | return; | |
3061 | ||
3062 | give_sigsegv: | |
3063 | unlock_user_struct(frame, frame_addr, 1); | |
3064 | force_sig(TARGET_SIGSEGV/*, current*/); | |
106ec879 FB |
3065 | } |
3066 | ||
05390248 | 3067 | long do_rt_sigreturn(CPUMIPSState *env) |
106ec879 | 3068 | { |
0b1bcb00 PB |
3069 | struct target_rt_sigframe *frame; |
3070 | abi_ulong frame_addr; | |
3071 | sigset_t blocked; | |
3072 | ||
3073 | #if defined(DEBUG_SIGNAL) | |
3074 | fprintf(stderr, "do_rt_sigreturn\n"); | |
3075 | #endif | |
3076 | frame_addr = env->active_tc.gpr[29]; | |
3077 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
3078 | goto badframe; | |
3079 | ||
60e99246 | 3080 | target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask); |
0b1bcb00 PB |
3081 | sigprocmask(SIG_SETMASK, &blocked, NULL); |
3082 | ||
60e99246 | 3083 | if (restore_sigcontext(env, &frame->rs_uc.tuc_mcontext)) |
0b1bcb00 PB |
3084 | goto badframe; |
3085 | ||
3086 | if (do_sigaltstack(frame_addr + | |
60e99246 | 3087 | offsetof(struct target_rt_sigframe, rs_uc.tuc_stack), |
0b1bcb00 PB |
3088 | 0, get_sp_from_cpustate(env)) == -EFAULT) |
3089 | goto badframe; | |
3090 | ||
3091 | env->active_tc.PC = env->CP0_EPC; | |
ea3164aa | 3092 | mips_set_hflags_isa_mode_from_pc(env); |
0b1bcb00 PB |
3093 | /* I am not sure this is right, but it seems to work |
3094 | * maybe a problem with nested signals ? */ | |
3095 | env->CP0_EPC = 0; | |
3096 | return -TARGET_QEMU_ESIGRETURN; | |
3097 | ||
3098 | badframe: | |
3099 | force_sig(TARGET_SIGSEGV/*, current*/); | |
3100 | return 0; | |
106ec879 | 3101 | } |
6d5e216d | 3102 | |
c3b5bc8a TS |
3103 | #elif defined(TARGET_SH4) |
3104 | ||
3105 | /* | |
3106 | * code and data structures from linux kernel: | |
3107 | * include/asm-sh/sigcontext.h | |
3108 | * arch/sh/kernel/signal.c | |
3109 | */ | |
3110 | ||
3111 | struct target_sigcontext { | |
3112 | target_ulong oldmask; | |
3113 | ||
3114 | /* CPU registers */ | |
3115 | target_ulong sc_gregs[16]; | |
3116 | target_ulong sc_pc; | |
3117 | target_ulong sc_pr; | |
3118 | target_ulong sc_sr; | |
3119 | target_ulong sc_gbr; | |
3120 | target_ulong sc_mach; | |
3121 | target_ulong sc_macl; | |
3122 | ||
3123 | /* FPU registers */ | |
3124 | target_ulong sc_fpregs[16]; | |
3125 | target_ulong sc_xfpregs[16]; | |
3126 | unsigned int sc_fpscr; | |
3127 | unsigned int sc_fpul; | |
3128 | unsigned int sc_ownedfp; | |
3129 | }; | |
3130 | ||
3131 | struct target_sigframe | |
3132 | { | |
3133 | struct target_sigcontext sc; | |
3134 | target_ulong extramask[TARGET_NSIG_WORDS-1]; | |
3135 | uint16_t retcode[3]; | |
3136 | }; | |
3137 | ||
3138 | ||
3139 | struct target_ucontext { | |
60e99246 AJ |
3140 | target_ulong tuc_flags; |
3141 | struct target_ucontext *tuc_link; | |
3142 | target_stack_t tuc_stack; | |
3143 | struct target_sigcontext tuc_mcontext; | |
3144 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
c3b5bc8a TS |
3145 | }; |
3146 | ||
3147 | struct target_rt_sigframe | |
3148 | { | |
3149 | struct target_siginfo info; | |
3150 | struct target_ucontext uc; | |
3151 | uint16_t retcode[3]; | |
3152 | }; | |
3153 | ||
3154 | ||
3155 | #define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */ | |
3156 | #define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */ | |
3157 | ||
624f7979 | 3158 | static abi_ulong get_sigframe(struct target_sigaction *ka, |
c3b5bc8a TS |
3159 | unsigned long sp, size_t frame_size) |
3160 | { | |
624f7979 | 3161 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) { |
c3b5bc8a TS |
3162 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
3163 | } | |
3164 | ||
3165 | return (sp - frame_size) & -8ul; | |
3166 | } | |
3167 | ||
3168 | static int setup_sigcontext(struct target_sigcontext *sc, | |
05390248 | 3169 | CPUSH4State *regs, unsigned long mask) |
c3b5bc8a TS |
3170 | { |
3171 | int err = 0; | |
d8714436 | 3172 | int i; |
c3b5bc8a TS |
3173 | |
3174 | #define COPY(x) err |= __put_user(regs->x, &sc->sc_##x) | |
3175 | COPY(gregs[0]); COPY(gregs[1]); | |
3176 | COPY(gregs[2]); COPY(gregs[3]); | |
3177 | COPY(gregs[4]); COPY(gregs[5]); | |
3178 | COPY(gregs[6]); COPY(gregs[7]); | |
3179 | COPY(gregs[8]); COPY(gregs[9]); | |
3180 | COPY(gregs[10]); COPY(gregs[11]); | |
3181 | COPY(gregs[12]); COPY(gregs[13]); | |
3182 | COPY(gregs[14]); COPY(gregs[15]); | |
3183 | COPY(gbr); COPY(mach); | |
3184 | COPY(macl); COPY(pr); | |
3185 | COPY(sr); COPY(pc); | |
3186 | #undef COPY | |
3187 | ||
d8714436 TY |
3188 | for (i=0; i<16; i++) { |
3189 | err |= __put_user(regs->fregs[i], &sc->sc_fpregs[i]); | |
3190 | } | |
3191 | err |= __put_user(regs->fpscr, &sc->sc_fpscr); | |
3192 | err |= __put_user(regs->fpul, &sc->sc_fpul); | |
c3b5bc8a TS |
3193 | |
3194 | /* non-iBCS2 extensions.. */ | |
3195 | err |= __put_user(mask, &sc->oldmask); | |
3196 | ||
3197 | return err; | |
3198 | } | |
3199 | ||
05390248 | 3200 | static int restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc, |
d8714436 | 3201 | target_ulong *r0_p) |
c3b5bc8a TS |
3202 | { |
3203 | unsigned int err = 0; | |
d8714436 | 3204 | int i; |
c3b5bc8a TS |
3205 | |
3206 | #define COPY(x) err |= __get_user(regs->x, &sc->sc_##x) | |
3207 | COPY(gregs[1]); | |
3208 | COPY(gregs[2]); COPY(gregs[3]); | |
3209 | COPY(gregs[4]); COPY(gregs[5]); | |
3210 | COPY(gregs[6]); COPY(gregs[7]); | |
3211 | COPY(gregs[8]); COPY(gregs[9]); | |
3212 | COPY(gregs[10]); COPY(gregs[11]); | |
3213 | COPY(gregs[12]); COPY(gregs[13]); | |
3214 | COPY(gregs[14]); COPY(gregs[15]); | |
3215 | COPY(gbr); COPY(mach); | |
3216 | COPY(macl); COPY(pr); | |
3217 | COPY(sr); COPY(pc); | |
3218 | #undef COPY | |
3219 | ||
d8714436 TY |
3220 | for (i=0; i<16; i++) { |
3221 | err |= __get_user(regs->fregs[i], &sc->sc_fpregs[i]); | |
3222 | } | |
3223 | err |= __get_user(regs->fpscr, &sc->sc_fpscr); | |
3224 | err |= __get_user(regs->fpul, &sc->sc_fpul); | |
c3b5bc8a TS |
3225 | |
3226 | regs->tra = -1; /* disable syscall checks */ | |
d8714436 | 3227 | err |= __get_user(*r0_p, &sc->sc_gregs[0]); |
c3b5bc8a TS |
3228 | return err; |
3229 | } | |
3230 | ||
624f7979 | 3231 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 3232 | target_sigset_t *set, CPUSH4State *regs) |
c3b5bc8a TS |
3233 | { |
3234 | struct target_sigframe *frame; | |
3235 | abi_ulong frame_addr; | |
3236 | int i; | |
3237 | int err = 0; | |
3238 | int signal; | |
3239 | ||
3240 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
3241 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3242 | goto give_sigsegv; | |
3243 | ||
3244 | signal = current_exec_domain_sig(sig); | |
3245 | ||
3246 | err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); | |
3247 | ||
3248 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
3249 | err |= __put_user(set->sig[i + 1], &frame->extramask[i]); | |
3250 | } | |
3251 | ||
3252 | /* Set up to return from userspace. If provided, use a stub | |
3253 | already in userspace. */ | |
624f7979 PB |
3254 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
3255 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
3256 | } else { |
3257 | /* Generate return code (system call to sigreturn) */ | |
3258 | err |= __put_user(MOVW(2), &frame->retcode[0]); | |
3259 | err |= __put_user(TRAP_NOARG, &frame->retcode[1]); | |
3260 | err |= __put_user((TARGET_NR_sigreturn), &frame->retcode[2]); | |
3261 | regs->pr = (unsigned long) frame->retcode; | |
3262 | } | |
3263 | ||
3264 | if (err) | |
3265 | goto give_sigsegv; | |
3266 | ||
3267 | /* Set up registers for signal handler */ | |
cb9c6268 | 3268 | regs->gregs[15] = frame_addr; |
c3b5bc8a TS |
3269 | regs->gregs[4] = signal; /* Arg for signal handler */ |
3270 | regs->gregs[5] = 0; | |
cb9c6268 | 3271 | regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc); |
624f7979 | 3272 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
3273 | |
3274 | unlock_user_struct(frame, frame_addr, 1); | |
3275 | return; | |
3276 | ||
3277 | give_sigsegv: | |
3278 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 3279 | force_sig(TARGET_SIGSEGV); |
c3b5bc8a TS |
3280 | } |
3281 | ||
624f7979 | 3282 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3283 | target_siginfo_t *info, |
05390248 | 3284 | target_sigset_t *set, CPUSH4State *regs) |
c3b5bc8a TS |
3285 | { |
3286 | struct target_rt_sigframe *frame; | |
3287 | abi_ulong frame_addr; | |
3288 | int i; | |
3289 | int err = 0; | |
3290 | int signal; | |
3291 | ||
3292 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
3293 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3294 | goto give_sigsegv; | |
3295 | ||
3296 | signal = current_exec_domain_sig(sig); | |
3297 | ||
3298 | err |= copy_siginfo_to_user(&frame->info, info); | |
3299 | ||
3300 | /* Create the ucontext. */ | |
60e99246 AJ |
3301 | err |= __put_user(0, &frame->uc.tuc_flags); |
3302 | err |= __put_user(0, (unsigned long *)&frame->uc.tuc_link); | |
526ccb7a | 3303 | err |= __put_user((unsigned long)target_sigaltstack_used.ss_sp, |
60e99246 | 3304 | &frame->uc.tuc_stack.ss_sp); |
c3b5bc8a | 3305 | err |= __put_user(sas_ss_flags(regs->gregs[15]), |
60e99246 | 3306 | &frame->uc.tuc_stack.ss_flags); |
c3b5bc8a | 3307 | err |= __put_user(target_sigaltstack_used.ss_size, |
60e99246 AJ |
3308 | &frame->uc.tuc_stack.ss_size); |
3309 | err |= setup_sigcontext(&frame->uc.tuc_mcontext, | |
c3b5bc8a TS |
3310 | regs, set->sig[0]); |
3311 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
60e99246 | 3312 | err |= __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
c3b5bc8a TS |
3313 | } |
3314 | ||
3315 | /* Set up to return from userspace. If provided, use a stub | |
3316 | already in userspace. */ | |
624f7979 PB |
3317 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
3318 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
3319 | } else { |
3320 | /* Generate return code (system call to sigreturn) */ | |
3321 | err |= __put_user(MOVW(2), &frame->retcode[0]); | |
3322 | err |= __put_user(TRAP_NOARG, &frame->retcode[1]); | |
3323 | err |= __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]); | |
3324 | regs->pr = (unsigned long) frame->retcode; | |
3325 | } | |
3326 | ||
3327 | if (err) | |
3328 | goto give_sigsegv; | |
3329 | ||
3330 | /* Set up registers for signal handler */ | |
cb9c6268 | 3331 | regs->gregs[15] = frame_addr; |
c3b5bc8a | 3332 | regs->gregs[4] = signal; /* Arg for signal handler */ |
cb9c6268 EI |
3333 | regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info); |
3334 | regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc); | |
624f7979 | 3335 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
3336 | |
3337 | unlock_user_struct(frame, frame_addr, 1); | |
3338 | return; | |
3339 | ||
3340 | give_sigsegv: | |
3341 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 3342 | force_sig(TARGET_SIGSEGV); |
c3b5bc8a TS |
3343 | } |
3344 | ||
05390248 | 3345 | long do_sigreturn(CPUSH4State *regs) |
c3b5bc8a TS |
3346 | { |
3347 | struct target_sigframe *frame; | |
3348 | abi_ulong frame_addr; | |
3349 | sigset_t blocked; | |
c227f099 | 3350 | target_sigset_t target_set; |
d8714436 | 3351 | target_ulong r0; |
c3b5bc8a TS |
3352 | int i; |
3353 | int err = 0; | |
3354 | ||
3355 | #if defined(DEBUG_SIGNAL) | |
3356 | fprintf(stderr, "do_sigreturn\n"); | |
3357 | #endif | |
3358 | frame_addr = regs->gregs[15]; | |
3359 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
3360 | goto badframe; | |
3361 | ||
3362 | err |= __get_user(target_set.sig[0], &frame->sc.oldmask); | |
3363 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3364 | err |= (__get_user(target_set.sig[i], &frame->extramask[i - 1])); | |
3365 | } | |
3366 | ||
3367 | if (err) | |
3368 | goto badframe; | |
3369 | ||
3370 | target_to_host_sigset_internal(&blocked, &target_set); | |
3371 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
3372 | ||
d8714436 | 3373 | if (restore_sigcontext(regs, &frame->sc, &r0)) |
c3b5bc8a TS |
3374 | goto badframe; |
3375 | ||
3376 | unlock_user_struct(frame, frame_addr, 0); | |
d8714436 | 3377 | return r0; |
c3b5bc8a TS |
3378 | |
3379 | badframe: | |
3380 | unlock_user_struct(frame, frame_addr, 0); | |
3381 | force_sig(TARGET_SIGSEGV); | |
3382 | return 0; | |
3383 | } | |
3384 | ||
05390248 | 3385 | long do_rt_sigreturn(CPUSH4State *regs) |
c3b5bc8a TS |
3386 | { |
3387 | struct target_rt_sigframe *frame; | |
3388 | abi_ulong frame_addr; | |
3389 | sigset_t blocked; | |
d8714436 | 3390 | target_ulong r0; |
c3b5bc8a TS |
3391 | |
3392 | #if defined(DEBUG_SIGNAL) | |
3393 | fprintf(stderr, "do_rt_sigreturn\n"); | |
3394 | #endif | |
3395 | frame_addr = regs->gregs[15]; | |
3396 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
3397 | goto badframe; | |
3398 | ||
60e99246 | 3399 | target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask); |
c3b5bc8a TS |
3400 | sigprocmask(SIG_SETMASK, &blocked, NULL); |
3401 | ||
60e99246 | 3402 | if (restore_sigcontext(regs, &frame->uc.tuc_mcontext, &r0)) |
c3b5bc8a TS |
3403 | goto badframe; |
3404 | ||
3405 | if (do_sigaltstack(frame_addr + | |
60e99246 | 3406 | offsetof(struct target_rt_sigframe, uc.tuc_stack), |
c3b5bc8a TS |
3407 | 0, get_sp_from_cpustate(regs)) == -EFAULT) |
3408 | goto badframe; | |
3409 | ||
3410 | unlock_user_struct(frame, frame_addr, 0); | |
d8714436 | 3411 | return r0; |
c3b5bc8a TS |
3412 | |
3413 | badframe: | |
3414 | unlock_user_struct(frame, frame_addr, 0); | |
3415 | force_sig(TARGET_SIGSEGV); | |
3416 | return 0; | |
3417 | } | |
b779e29e EI |
3418 | #elif defined(TARGET_MICROBLAZE) |
3419 | ||
3420 | struct target_sigcontext { | |
3421 | struct target_pt_regs regs; /* needs to be first */ | |
3422 | uint32_t oldmask; | |
3423 | }; | |
3424 | ||
b2178704 EI |
3425 | struct target_stack_t { |
3426 | abi_ulong ss_sp; | |
3427 | int ss_flags; | |
3428 | unsigned int ss_size; | |
3429 | }; | |
3430 | ||
3431 | struct target_ucontext { | |
f711df67 RH |
3432 | abi_ulong tuc_flags; |
3433 | abi_ulong tuc_link; | |
3434 | struct target_stack_t tuc_stack; | |
3435 | struct target_sigcontext tuc_mcontext; | |
3436 | uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1]; | |
b2178704 EI |
3437 | }; |
3438 | ||
b779e29e EI |
3439 | /* Signal frames. */ |
3440 | struct target_signal_frame { | |
b2178704 | 3441 | struct target_ucontext uc; |
b779e29e EI |
3442 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; |
3443 | uint32_t tramp[2]; | |
3444 | }; | |
3445 | ||
3446 | struct rt_signal_frame { | |
02d2bd5d | 3447 | siginfo_t info; |
b779e29e EI |
3448 | struct ucontext uc; |
3449 | uint32_t tramp[2]; | |
3450 | }; | |
3451 | ||
05390248 | 3452 | static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env) |
b779e29e EI |
3453 | { |
3454 | __put_user(env->regs[0], &sc->regs.r0); | |
3455 | __put_user(env->regs[1], &sc->regs.r1); | |
3456 | __put_user(env->regs[2], &sc->regs.r2); | |
3457 | __put_user(env->regs[3], &sc->regs.r3); | |
3458 | __put_user(env->regs[4], &sc->regs.r4); | |
3459 | __put_user(env->regs[5], &sc->regs.r5); | |
3460 | __put_user(env->regs[6], &sc->regs.r6); | |
3461 | __put_user(env->regs[7], &sc->regs.r7); | |
3462 | __put_user(env->regs[8], &sc->regs.r8); | |
3463 | __put_user(env->regs[9], &sc->regs.r9); | |
3464 | __put_user(env->regs[10], &sc->regs.r10); | |
3465 | __put_user(env->regs[11], &sc->regs.r11); | |
3466 | __put_user(env->regs[12], &sc->regs.r12); | |
3467 | __put_user(env->regs[13], &sc->regs.r13); | |
3468 | __put_user(env->regs[14], &sc->regs.r14); | |
3469 | __put_user(env->regs[15], &sc->regs.r15); | |
3470 | __put_user(env->regs[16], &sc->regs.r16); | |
3471 | __put_user(env->regs[17], &sc->regs.r17); | |
3472 | __put_user(env->regs[18], &sc->regs.r18); | |
3473 | __put_user(env->regs[19], &sc->regs.r19); | |
3474 | __put_user(env->regs[20], &sc->regs.r20); | |
3475 | __put_user(env->regs[21], &sc->regs.r21); | |
3476 | __put_user(env->regs[22], &sc->regs.r22); | |
3477 | __put_user(env->regs[23], &sc->regs.r23); | |
3478 | __put_user(env->regs[24], &sc->regs.r24); | |
3479 | __put_user(env->regs[25], &sc->regs.r25); | |
3480 | __put_user(env->regs[26], &sc->regs.r26); | |
3481 | __put_user(env->regs[27], &sc->regs.r27); | |
3482 | __put_user(env->regs[28], &sc->regs.r28); | |
3483 | __put_user(env->regs[29], &sc->regs.r29); | |
3484 | __put_user(env->regs[30], &sc->regs.r30); | |
3485 | __put_user(env->regs[31], &sc->regs.r31); | |
3486 | __put_user(env->sregs[SR_PC], &sc->regs.pc); | |
3487 | } | |
3488 | ||
05390248 | 3489 | static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env) |
b779e29e EI |
3490 | { |
3491 | __get_user(env->regs[0], &sc->regs.r0); | |
3492 | __get_user(env->regs[1], &sc->regs.r1); | |
3493 | __get_user(env->regs[2], &sc->regs.r2); | |
3494 | __get_user(env->regs[3], &sc->regs.r3); | |
3495 | __get_user(env->regs[4], &sc->regs.r4); | |
3496 | __get_user(env->regs[5], &sc->regs.r5); | |
3497 | __get_user(env->regs[6], &sc->regs.r6); | |
3498 | __get_user(env->regs[7], &sc->regs.r7); | |
3499 | __get_user(env->regs[8], &sc->regs.r8); | |
3500 | __get_user(env->regs[9], &sc->regs.r9); | |
3501 | __get_user(env->regs[10], &sc->regs.r10); | |
3502 | __get_user(env->regs[11], &sc->regs.r11); | |
3503 | __get_user(env->regs[12], &sc->regs.r12); | |
3504 | __get_user(env->regs[13], &sc->regs.r13); | |
3505 | __get_user(env->regs[14], &sc->regs.r14); | |
3506 | __get_user(env->regs[15], &sc->regs.r15); | |
3507 | __get_user(env->regs[16], &sc->regs.r16); | |
3508 | __get_user(env->regs[17], &sc->regs.r17); | |
3509 | __get_user(env->regs[18], &sc->regs.r18); | |
3510 | __get_user(env->regs[19], &sc->regs.r19); | |
3511 | __get_user(env->regs[20], &sc->regs.r20); | |
3512 | __get_user(env->regs[21], &sc->regs.r21); | |
3513 | __get_user(env->regs[22], &sc->regs.r22); | |
3514 | __get_user(env->regs[23], &sc->regs.r23); | |
3515 | __get_user(env->regs[24], &sc->regs.r24); | |
3516 | __get_user(env->regs[25], &sc->regs.r25); | |
3517 | __get_user(env->regs[26], &sc->regs.r26); | |
3518 | __get_user(env->regs[27], &sc->regs.r27); | |
3519 | __get_user(env->regs[28], &sc->regs.r28); | |
3520 | __get_user(env->regs[29], &sc->regs.r29); | |
3521 | __get_user(env->regs[30], &sc->regs.r30); | |
3522 | __get_user(env->regs[31], &sc->regs.r31); | |
3523 | __get_user(env->sregs[SR_PC], &sc->regs.pc); | |
3524 | } | |
3525 | ||
3526 | static abi_ulong get_sigframe(struct target_sigaction *ka, | |
05390248 | 3527 | CPUMBState *env, int frame_size) |
b779e29e EI |
3528 | { |
3529 | abi_ulong sp = env->regs[1]; | |
3530 | ||
3531 | if ((ka->sa_flags & SA_ONSTACK) != 0 && !on_sig_stack(sp)) | |
3532 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
3533 | ||
3534 | return ((sp - frame_size) & -8UL); | |
3535 | } | |
3536 | ||
3537 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 3538 | target_sigset_t *set, CPUMBState *env) |
b779e29e EI |
3539 | { |
3540 | struct target_signal_frame *frame; | |
3541 | abi_ulong frame_addr; | |
3542 | int err = 0; | |
3543 | int i; | |
3544 | ||
3545 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
3546 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3547 | goto badframe; | |
3548 | ||
3549 | /* Save the mask. */ | |
f711df67 | 3550 | err |= __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask); |
b779e29e EI |
3551 | if (err) |
3552 | goto badframe; | |
3553 | ||
3554 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3555 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
3556 | goto badframe; | |
3557 | } | |
3558 | ||
f711df67 | 3559 | setup_sigcontext(&frame->uc.tuc_mcontext, env); |
b779e29e EI |
3560 | |
3561 | /* Set up to return from userspace. If provided, use a stub | |
3562 | already in userspace. */ | |
3563 | /* minus 8 is offset to cater for "rtsd r15,8" offset */ | |
3564 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
3565 | env->regs[15] = ((unsigned long)ka->sa_restorer)-8; | |
3566 | } else { | |
3567 | uint32_t t; | |
3568 | /* Note, these encodings are _big endian_! */ | |
3569 | /* addi r12, r0, __NR_sigreturn */ | |
3570 | t = 0x31800000UL | TARGET_NR_sigreturn; | |
3571 | err |= __put_user(t, frame->tramp + 0); | |
3572 | /* brki r14, 0x8 */ | |
3573 | t = 0xb9cc0008UL; | |
3574 | err |= __put_user(t, frame->tramp + 1); | |
3575 | ||
3576 | /* Return from sighandler will jump to the tramp. | |
3577 | Negative 8 offset because return is rtsd r15, 8 */ | |
3578 | env->regs[15] = ((unsigned long)frame->tramp) - 8; | |
3579 | } | |
3580 | ||
3581 | if (err) | |
3582 | goto badframe; | |
3583 | ||
3584 | /* Set up registers for signal handler */ | |
cb9c6268 | 3585 | env->regs[1] = frame_addr; |
b779e29e EI |
3586 | /* Signal handler args: */ |
3587 | env->regs[5] = sig; /* Arg 0: signum */ | |
187b4e08 | 3588 | env->regs[6] = 0; |
cb9c6268 EI |
3589 | /* arg 1: sigcontext */ |
3590 | env->regs[7] = frame_addr += offsetof(typeof(*frame), uc); | |
b779e29e EI |
3591 | |
3592 | /* Offset of 4 to handle microblaze rtid r14, 0 */ | |
3593 | env->sregs[SR_PC] = (unsigned long)ka->_sa_handler; | |
3594 | ||
3595 | unlock_user_struct(frame, frame_addr, 1); | |
3596 | return; | |
3597 | badframe: | |
3598 | unlock_user_struct(frame, frame_addr, 1); | |
3599 | force_sig(TARGET_SIGSEGV); | |
3600 | } | |
3601 | ||
3602 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 3603 | target_siginfo_t *info, |
05390248 | 3604 | target_sigset_t *set, CPUMBState *env) |
b779e29e EI |
3605 | { |
3606 | fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n"); | |
3607 | } | |
3608 | ||
05390248 | 3609 | long do_sigreturn(CPUMBState *env) |
b779e29e EI |
3610 | { |
3611 | struct target_signal_frame *frame; | |
3612 | abi_ulong frame_addr; | |
c227f099 | 3613 | target_sigset_t target_set; |
b779e29e EI |
3614 | sigset_t set; |
3615 | int i; | |
3616 | ||
3617 | frame_addr = env->regs[R_SP]; | |
3618 | /* Make sure the guest isn't playing games. */ | |
3619 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) | |
3620 | goto badframe; | |
3621 | ||
3622 | /* Restore blocked signals */ | |
f711df67 | 3623 | if (__get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask)) |
b779e29e EI |
3624 | goto badframe; |
3625 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3626 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
3627 | goto badframe; | |
3628 | } | |
3629 | target_to_host_sigset_internal(&set, &target_set); | |
3630 | sigprocmask(SIG_SETMASK, &set, NULL); | |
3631 | ||
f711df67 | 3632 | restore_sigcontext(&frame->uc.tuc_mcontext, env); |
b779e29e EI |
3633 | /* We got here through a sigreturn syscall, our path back is via an |
3634 | rtb insn so setup r14 for that. */ | |
3635 | env->regs[14] = env->sregs[SR_PC]; | |
3636 | ||
3637 | unlock_user_struct(frame, frame_addr, 0); | |
3638 | return env->regs[10]; | |
3639 | badframe: | |
3640 | unlock_user_struct(frame, frame_addr, 0); | |
3641 | force_sig(TARGET_SIGSEGV); | |
3642 | } | |
3643 | ||
05390248 | 3644 | long do_rt_sigreturn(CPUMBState *env) |
b779e29e EI |
3645 | { |
3646 | fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n"); | |
3647 | return -TARGET_ENOSYS; | |
3648 | } | |
3649 | ||
b6d3abda EI |
3650 | #elif defined(TARGET_CRIS) |
3651 | ||
3652 | struct target_sigcontext { | |
3653 | struct target_pt_regs regs; /* needs to be first */ | |
3654 | uint32_t oldmask; | |
3655 | uint32_t usp; /* usp before stacking this gunk on it */ | |
3656 | }; | |
3657 | ||
3658 | /* Signal frames. */ | |
3659 | struct target_signal_frame { | |
3660 | struct target_sigcontext sc; | |
3661 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; | |
8cfc114a | 3662 | uint16_t retcode[4]; /* Trampoline code. */ |
b6d3abda EI |
3663 | }; |
3664 | ||
3665 | struct rt_signal_frame { | |
02d2bd5d | 3666 | siginfo_t *pinfo; |
b6d3abda | 3667 | void *puc; |
02d2bd5d | 3668 | siginfo_t info; |
b6d3abda | 3669 | struct ucontext uc; |
8cfc114a | 3670 | uint16_t retcode[4]; /* Trampoline code. */ |
b6d3abda EI |
3671 | }; |
3672 | ||
05390248 | 3673 | static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) |
b6d3abda | 3674 | { |
9664d928 EI |
3675 | __put_user(env->regs[0], &sc->regs.r0); |
3676 | __put_user(env->regs[1], &sc->regs.r1); | |
3677 | __put_user(env->regs[2], &sc->regs.r2); | |
3678 | __put_user(env->regs[3], &sc->regs.r3); | |
3679 | __put_user(env->regs[4], &sc->regs.r4); | |
3680 | __put_user(env->regs[5], &sc->regs.r5); | |
3681 | __put_user(env->regs[6], &sc->regs.r6); | |
3682 | __put_user(env->regs[7], &sc->regs.r7); | |
3683 | __put_user(env->regs[8], &sc->regs.r8); | |
3684 | __put_user(env->regs[9], &sc->regs.r9); | |
3685 | __put_user(env->regs[10], &sc->regs.r10); | |
3686 | __put_user(env->regs[11], &sc->regs.r11); | |
3687 | __put_user(env->regs[12], &sc->regs.r12); | |
3688 | __put_user(env->regs[13], &sc->regs.r13); | |
3689 | __put_user(env->regs[14], &sc->usp); | |
3690 | __put_user(env->regs[15], &sc->regs.acr); | |
3691 | __put_user(env->pregs[PR_MOF], &sc->regs.mof); | |
3692 | __put_user(env->pregs[PR_SRP], &sc->regs.srp); | |
3693 | __put_user(env->pc, &sc->regs.erp); | |
b6d3abda | 3694 | } |
9664d928 | 3695 | |
05390248 | 3696 | static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env) |
b6d3abda | 3697 | { |
9664d928 EI |
3698 | __get_user(env->regs[0], &sc->regs.r0); |
3699 | __get_user(env->regs[1], &sc->regs.r1); | |
3700 | __get_user(env->regs[2], &sc->regs.r2); | |
3701 | __get_user(env->regs[3], &sc->regs.r3); | |
3702 | __get_user(env->regs[4], &sc->regs.r4); | |
3703 | __get_user(env->regs[5], &sc->regs.r5); | |
3704 | __get_user(env->regs[6], &sc->regs.r6); | |
3705 | __get_user(env->regs[7], &sc->regs.r7); | |
3706 | __get_user(env->regs[8], &sc->regs.r8); | |
3707 | __get_user(env->regs[9], &sc->regs.r9); | |
3708 | __get_user(env->regs[10], &sc->regs.r10); | |
3709 | __get_user(env->regs[11], &sc->regs.r11); | |
3710 | __get_user(env->regs[12], &sc->regs.r12); | |
3711 | __get_user(env->regs[13], &sc->regs.r13); | |
3712 | __get_user(env->regs[14], &sc->usp); | |
3713 | __get_user(env->regs[15], &sc->regs.acr); | |
3714 | __get_user(env->pregs[PR_MOF], &sc->regs.mof); | |
3715 | __get_user(env->pregs[PR_SRP], &sc->regs.srp); | |
3716 | __get_user(env->pc, &sc->regs.erp); | |
3717 | } | |
3718 | ||
05390248 | 3719 | static abi_ulong get_sigframe(CPUCRISState *env, int framesize) |
9664d928 EI |
3720 | { |
3721 | abi_ulong sp; | |
b6d3abda | 3722 | /* Align the stack downwards to 4. */ |
9664d928 EI |
3723 | sp = (env->regs[R_SP] & ~3); |
3724 | return sp - framesize; | |
b6d3abda EI |
3725 | } |
3726 | ||
624f7979 | 3727 | static void setup_frame(int sig, struct target_sigaction *ka, |
05390248 | 3728 | target_sigset_t *set, CPUCRISState *env) |
b6d3abda EI |
3729 | { |
3730 | struct target_signal_frame *frame; | |
9664d928 | 3731 | abi_ulong frame_addr; |
b6d3abda EI |
3732 | int err = 0; |
3733 | int i; | |
b6d3abda | 3734 | |
9664d928 EI |
3735 | frame_addr = get_sigframe(env, sizeof *frame); |
3736 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
b6d3abda EI |
3737 | goto badframe; |
3738 | ||
3739 | /* | |
3740 | * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't | |
3741 | * use this trampoline anymore but it sets it up for GDB. | |
3742 | * In QEMU, using the trampoline simplifies things a bit so we use it. | |
3743 | * | |
3744 | * This is movu.w __NR_sigreturn, r9; break 13; | |
3745 | */ | |
3746 | err |= __put_user(0x9c5f, frame->retcode+0); | |
3747 | err |= __put_user(TARGET_NR_sigreturn, | |
8cfc114a SW |
3748 | frame->retcode + 1); |
3749 | err |= __put_user(0xe93d, frame->retcode + 2); | |
b6d3abda EI |
3750 | |
3751 | /* Save the mask. */ | |
3752 | err |= __put_user(set->sig[0], &frame->sc.oldmask); | |
3753 | if (err) | |
3754 | goto badframe; | |
3755 | ||
3756 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3757 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
3758 | goto badframe; | |
3759 | } | |
3760 | ||
3761 | setup_sigcontext(&frame->sc, env); | |
3762 | ||
3763 | /* Move the stack and setup the arguments for the handler. */ | |
cb9c6268 | 3764 | env->regs[R_SP] = frame_addr; |
b6d3abda | 3765 | env->regs[10] = sig; |
624f7979 | 3766 | env->pc = (unsigned long) ka->_sa_handler; |
b6d3abda | 3767 | /* Link SRP so the guest returns through the trampoline. */ |
cb9c6268 | 3768 | env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode); |
b6d3abda | 3769 | |
9664d928 | 3770 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
3771 | return; |
3772 | badframe: | |
9664d928 | 3773 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
3774 | force_sig(TARGET_SIGSEGV); |
3775 | } | |
3776 | ||
624f7979 | 3777 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3778 | target_siginfo_t *info, |
05390248 | 3779 | target_sigset_t *set, CPUCRISState *env) |
b6d3abda EI |
3780 | { |
3781 | fprintf(stderr, "CRIS setup_rt_frame: not implemented\n"); | |
3782 | } | |
3783 | ||
05390248 | 3784 | long do_sigreturn(CPUCRISState *env) |
b6d3abda EI |
3785 | { |
3786 | struct target_signal_frame *frame; | |
9664d928 | 3787 | abi_ulong frame_addr; |
c227f099 | 3788 | target_sigset_t target_set; |
b6d3abda EI |
3789 | sigset_t set; |
3790 | int i; | |
3791 | ||
9664d928 | 3792 | frame_addr = env->regs[R_SP]; |
b6d3abda | 3793 | /* Make sure the guest isn't playing games. */ |
9664d928 | 3794 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
b6d3abda EI |
3795 | goto badframe; |
3796 | ||
3797 | /* Restore blocked signals */ | |
3798 | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) | |
3799 | goto badframe; | |
3800 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3801 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
3802 | goto badframe; | |
3803 | } | |
3804 | target_to_host_sigset_internal(&set, &target_set); | |
3805 | sigprocmask(SIG_SETMASK, &set, NULL); | |
3806 | ||
3807 | restore_sigcontext(&frame->sc, env); | |
9664d928 | 3808 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3809 | return env->regs[10]; |
3810 | badframe: | |
9664d928 | 3811 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3812 | force_sig(TARGET_SIGSEGV); |
3813 | } | |
3814 | ||
05390248 | 3815 | long do_rt_sigreturn(CPUCRISState *env) |
b6d3abda EI |
3816 | { |
3817 | fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n"); | |
3818 | return -TARGET_ENOSYS; | |
3819 | } | |
c3b5bc8a | 3820 | |
d962783e JL |
3821 | #elif defined(TARGET_OPENRISC) |
3822 | ||
3823 | struct target_sigcontext { | |
3824 | struct target_pt_regs regs; | |
3825 | abi_ulong oldmask; | |
3826 | abi_ulong usp; | |
3827 | }; | |
3828 | ||
3829 | struct target_ucontext { | |
3830 | abi_ulong tuc_flags; | |
3831 | abi_ulong tuc_link; | |
3832 | target_stack_t tuc_stack; | |
3833 | struct target_sigcontext tuc_mcontext; | |
3834 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
3835 | }; | |
3836 | ||
3837 | struct target_rt_sigframe { | |
3838 | abi_ulong pinfo; | |
3839 | uint64_t puc; | |
3840 | struct target_siginfo info; | |
3841 | struct target_sigcontext sc; | |
3842 | struct target_ucontext uc; | |
3843 | unsigned char retcode[16]; /* trampoline code */ | |
3844 | }; | |
3845 | ||
3846 | /* This is the asm-generic/ucontext.h version */ | |
3847 | #if 0 | |
3848 | static int restore_sigcontext(CPUOpenRISCState *regs, | |
3849 | struct target_sigcontext *sc) | |
3850 | { | |
3851 | unsigned int err = 0; | |
3852 | unsigned long old_usp; | |
3853 | ||
3854 | /* Alwys make any pending restarted system call return -EINTR */ | |
3855 | current_thread_info()->restart_block.fn = do_no_restart_syscall; | |
3856 | ||
3857 | /* restore the regs from &sc->regs (same as sc, since regs is first) | |
3858 | * (sc is already checked for VERIFY_READ since the sigframe was | |
3859 | * checked in sys_sigreturn previously) | |
3860 | */ | |
3861 | ||
3862 | if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) { | |
3863 | goto badframe; | |
3864 | } | |
3865 | ||
3866 | /* make sure the U-flag is set so user-mode cannot fool us */ | |
3867 | ||
3868 | regs->sr &= ~SR_SM; | |
3869 | ||
3870 | /* restore the old USP as it was before we stacked the sc etc. | |
3871 | * (we cannot just pop the sigcontext since we aligned the sp and | |
3872 | * stuff after pushing it) | |
3873 | */ | |
3874 | ||
3875 | err |= __get_user(old_usp, &sc->usp); | |
3876 | phx_signal("old_usp 0x%lx", old_usp); | |
3877 | ||
3878 | __PHX__ REALLY /* ??? */ | |
3879 | wrusp(old_usp); | |
3880 | regs->gpr[1] = old_usp; | |
3881 | ||
3882 | /* TODO: the other ports use regs->orig_XX to disable syscall checks | |
3883 | * after this completes, but we don't use that mechanism. maybe we can | |
3884 | * use it now ? | |
3885 | */ | |
3886 | ||
3887 | return err; | |
3888 | ||
3889 | badframe: | |
3890 | return 1; | |
3891 | } | |
3892 | #endif | |
3893 | ||
3894 | /* Set up a signal frame. */ | |
3895 | ||
3896 | static int setup_sigcontext(struct target_sigcontext *sc, | |
3897 | CPUOpenRISCState *regs, | |
3898 | unsigned long mask) | |
3899 | { | |
3900 | int err = 0; | |
3901 | unsigned long usp = regs->gpr[1]; | |
3902 | ||
3903 | /* copy the regs. they are first in sc so we can use sc directly */ | |
3904 | ||
3905 | /*err |= copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/ | |
3906 | ||
3907 | /* Set the frametype to CRIS_FRAME_NORMAL for the execution of | |
3908 | the signal handler. The frametype will be restored to its previous | |
3909 | value in restore_sigcontext. */ | |
3910 | /*regs->frametype = CRIS_FRAME_NORMAL;*/ | |
3911 | ||
3912 | /* then some other stuff */ | |
3913 | err |= __put_user(mask, &sc->oldmask); | |
3914 | err |= __put_user(usp, &sc->usp); return err; | |
3915 | } | |
3916 | ||
3917 | static inline unsigned long align_sigframe(unsigned long sp) | |
3918 | { | |
3919 | unsigned long i; | |
3920 | i = sp & ~3UL; | |
3921 | return i; | |
3922 | } | |
3923 | ||
3924 | static inline abi_ulong get_sigframe(struct target_sigaction *ka, | |
3925 | CPUOpenRISCState *regs, | |
3926 | size_t frame_size) | |
3927 | { | |
3928 | unsigned long sp = regs->gpr[1]; | |
3929 | int onsigstack = on_sig_stack(sp); | |
3930 | ||
3931 | /* redzone */ | |
3932 | /* This is the X/Open sanctioned signal stack switching. */ | |
3933 | if ((ka->sa_flags & SA_ONSTACK) != 0 && !onsigstack) { | |
3934 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
3935 | } | |
3936 | ||
3937 | sp = align_sigframe(sp - frame_size); | |
3938 | ||
3939 | /* | |
3940 | * If we are on the alternate signal stack and would overflow it, don't. | |
3941 | * Return an always-bogus address instead so we will die with SIGSEGV. | |
3942 | */ | |
3943 | ||
3944 | if (onsigstack && !likely(on_sig_stack(sp))) { | |
3945 | return -1L; | |
3946 | } | |
3947 | ||
3948 | return sp; | |
3949 | } | |
3950 | ||
3951 | static void setup_frame(int sig, struct target_sigaction *ka, | |
3952 | target_sigset_t *set, CPUOpenRISCState *env) | |
3953 | { | |
3954 | qemu_log("Not implement.\n"); | |
3955 | } | |
3956 | ||
3957 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
3958 | target_siginfo_t *info, | |
3959 | target_sigset_t *set, CPUOpenRISCState *env) | |
3960 | { | |
3961 | int err = 0; | |
3962 | abi_ulong frame_addr; | |
3963 | unsigned long return_ip; | |
3964 | struct target_rt_sigframe *frame; | |
3965 | abi_ulong info_addr, uc_addr; | |
3966 | ||
3967 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
3968 | ||
3969 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
3970 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
3971 | goto give_sigsegv; | |
3972 | } | |
3973 | ||
3974 | info_addr = frame_addr + offsetof(struct target_rt_sigframe, info); | |
3975 | err |= __put_user(info_addr, &frame->pinfo); | |
3976 | uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
3977 | err |= __put_user(uc_addr, &frame->puc); | |
3978 | ||
3979 | if (ka->sa_flags & SA_SIGINFO) { | |
3980 | err |= copy_siginfo_to_user(&frame->info, info); | |
3981 | } | |
3982 | if (err) { | |
3983 | goto give_sigsegv; | |
3984 | } | |
3985 | ||
3986 | /*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/ | |
3987 | err |= __put_user(0, &frame->uc.tuc_flags); | |
3988 | err |= __put_user(0, &frame->uc.tuc_link); | |
3989 | err |= __put_user(target_sigaltstack_used.ss_sp, | |
3990 | &frame->uc.tuc_stack.ss_sp); | |
3991 | err |= __put_user(sas_ss_flags(env->gpr[1]), &frame->uc.tuc_stack.ss_flags); | |
3992 | err |= __put_user(target_sigaltstack_used.ss_size, | |
3993 | &frame->uc.tuc_stack.ss_size); | |
3994 | err |= setup_sigcontext(&frame->sc, env, set->sig[0]); | |
3995 | ||
3996 | /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/ | |
3997 | ||
3998 | if (err) { | |
3999 | goto give_sigsegv; | |
4000 | } | |
4001 | ||
4002 | /* trampoline - the desired return ip is the retcode itself */ | |
4003 | return_ip = (unsigned long)&frame->retcode; | |
4004 | /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */ | |
4005 | err |= __put_user(0xa960, (short *)(frame->retcode + 0)); | |
4006 | err |= __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2)); | |
4007 | err |= __put_user(0x20000001, (unsigned long *)(frame->retcode + 4)); | |
4008 | err |= __put_user(0x15000000, (unsigned long *)(frame->retcode + 8)); | |
4009 | ||
4010 | if (err) { | |
4011 | goto give_sigsegv; | |
4012 | } | |
4013 | ||
4014 | /* TODO what is the current->exec_domain stuff and invmap ? */ | |
4015 | ||
4016 | /* Set up registers for signal handler */ | |
4017 | env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */ | |
4018 | env->gpr[9] = (unsigned long)return_ip; /* what we enter LATER */ | |
4019 | env->gpr[3] = (unsigned long)sig; /* arg 1: signo */ | |
4020 | env->gpr[4] = (unsigned long)&frame->info; /* arg 2: (siginfo_t*) */ | |
4021 | env->gpr[5] = (unsigned long)&frame->uc; /* arg 3: ucontext */ | |
4022 | ||
4023 | /* actually move the usp to reflect the stacked frame */ | |
4024 | env->gpr[1] = (unsigned long)frame; | |
4025 | ||
4026 | return; | |
4027 | ||
4028 | give_sigsegv: | |
4029 | unlock_user_struct(frame, frame_addr, 1); | |
4030 | if (sig == TARGET_SIGSEGV) { | |
4031 | ka->_sa_handler = TARGET_SIG_DFL; | |
4032 | } | |
4033 | force_sig(TARGET_SIGSEGV); | |
4034 | } | |
4035 | ||
4036 | long do_sigreturn(CPUOpenRISCState *env) | |
4037 | { | |
4038 | ||
4039 | qemu_log("do_sigreturn: not implemented\n"); | |
4040 | return -TARGET_ENOSYS; | |
4041 | } | |
4042 | ||
4043 | long do_rt_sigreturn(CPUOpenRISCState *env) | |
4044 | { | |
4045 | qemu_log("do_rt_sigreturn: not implemented\n"); | |
4046 | return -TARGET_ENOSYS; | |
4047 | } | |
4048 | /* TARGET_OPENRISC */ | |
4049 | ||
a4c075f1 UH |
4050 | #elif defined(TARGET_S390X) |
4051 | ||
4052 | #define __NUM_GPRS 16 | |
4053 | #define __NUM_FPRS 16 | |
4054 | #define __NUM_ACRS 16 | |
4055 | ||
4056 | #define S390_SYSCALL_SIZE 2 | |
4057 | #define __SIGNAL_FRAMESIZE 160 /* FIXME: 31-bit mode -> 96 */ | |
4058 | ||
4059 | #define _SIGCONTEXT_NSIG 64 | |
4060 | #define _SIGCONTEXT_NSIG_BPW 64 /* FIXME: 31-bit mode -> 32 */ | |
4061 | #define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW) | |
4062 | #define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS) | |
4063 | #define PSW_ADDR_AMODE 0x0000000000000000UL /* 0x80000000UL for 31-bit */ | |
4064 | #define S390_SYSCALL_OPCODE ((uint16_t)0x0a00) | |
4065 | ||
4066 | typedef struct { | |
4067 | target_psw_t psw; | |
4068 | target_ulong gprs[__NUM_GPRS]; | |
4069 | unsigned int acrs[__NUM_ACRS]; | |
4070 | } target_s390_regs_common; | |
4071 | ||
4072 | typedef struct { | |
4073 | unsigned int fpc; | |
4074 | double fprs[__NUM_FPRS]; | |
4075 | } target_s390_fp_regs; | |
4076 | ||
4077 | typedef struct { | |
4078 | target_s390_regs_common regs; | |
4079 | target_s390_fp_regs fpregs; | |
4080 | } target_sigregs; | |
4081 | ||
4082 | struct target_sigcontext { | |
4083 | target_ulong oldmask[_SIGCONTEXT_NSIG_WORDS]; | |
4084 | target_sigregs *sregs; | |
4085 | }; | |
4086 | ||
4087 | typedef struct { | |
4088 | uint8_t callee_used_stack[__SIGNAL_FRAMESIZE]; | |
4089 | struct target_sigcontext sc; | |
4090 | target_sigregs sregs; | |
4091 | int signo; | |
4092 | uint8_t retcode[S390_SYSCALL_SIZE]; | |
4093 | } sigframe; | |
4094 | ||
4095 | struct target_ucontext { | |
6fea2ea4 PM |
4096 | target_ulong tuc_flags; |
4097 | struct target_ucontext *tuc_link; | |
4098 | target_stack_t tuc_stack; | |
4099 | target_sigregs tuc_mcontext; | |
4100 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
a4c075f1 UH |
4101 | }; |
4102 | ||
4103 | typedef struct { | |
4104 | uint8_t callee_used_stack[__SIGNAL_FRAMESIZE]; | |
4105 | uint8_t retcode[S390_SYSCALL_SIZE]; | |
4106 | struct target_siginfo info; | |
4107 | struct target_ucontext uc; | |
4108 | } rt_sigframe; | |
4109 | ||
4110 | static inline abi_ulong | |
05390248 | 4111 | get_sigframe(struct target_sigaction *ka, CPUS390XState *env, size_t frame_size) |
a4c075f1 UH |
4112 | { |
4113 | abi_ulong sp; | |
4114 | ||
4115 | /* Default to using normal stack */ | |
4116 | sp = env->regs[15]; | |
4117 | ||
4118 | /* This is the X/Open sanctioned signal stack switching. */ | |
4119 | if (ka->sa_flags & TARGET_SA_ONSTACK) { | |
4120 | if (!sas_ss_flags(sp)) { | |
4121 | sp = target_sigaltstack_used.ss_sp + | |
4122 | target_sigaltstack_used.ss_size; | |
4123 | } | |
4124 | } | |
4125 | ||
4126 | /* This is the legacy signal stack switching. */ | |
4127 | else if (/* FIXME !user_mode(regs) */ 0 && | |
4128 | !(ka->sa_flags & TARGET_SA_RESTORER) && | |
4129 | ka->sa_restorer) { | |
4130 | sp = (abi_ulong) ka->sa_restorer; | |
4131 | } | |
4132 | ||
4133 | return (sp - frame_size) & -8ul; | |
4134 | } | |
4135 | ||
05390248 | 4136 | static void save_sigregs(CPUS390XState *env, target_sigregs *sregs) |
a4c075f1 UH |
4137 | { |
4138 | int i; | |
4139 | //save_access_regs(current->thread.acrs); FIXME | |
4140 | ||
4141 | /* Copy a 'clean' PSW mask to the user to avoid leaking | |
4142 | information about whether PER is currently on. */ | |
4143 | __put_user(env->psw.mask, &sregs->regs.psw.mask); | |
4144 | __put_user(env->psw.addr, &sregs->regs.psw.addr); | |
4145 | for (i = 0; i < 16; i++) { | |
4146 | __put_user(env->regs[i], &sregs->regs.gprs[i]); | |
4147 | } | |
4148 | for (i = 0; i < 16; i++) { | |
4149 | __put_user(env->aregs[i], &sregs->regs.acrs[i]); | |
4150 | } | |
4151 | /* | |
4152 | * We have to store the fp registers to current->thread.fp_regs | |
4153 | * to merge them with the emulated registers. | |
4154 | */ | |
4155 | //save_fp_regs(¤t->thread.fp_regs); FIXME | |
4156 | for (i = 0; i < 16; i++) { | |
4157 | __put_user(env->fregs[i].ll, &sregs->fpregs.fprs[i]); | |
4158 | } | |
4159 | } | |
4160 | ||
4161 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 4162 | target_sigset_t *set, CPUS390XState *env) |
a4c075f1 UH |
4163 | { |
4164 | sigframe *frame; | |
4165 | abi_ulong frame_addr; | |
4166 | ||
4167 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
4168 | qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, | |
4169 | (unsigned long long)frame_addr); | |
4170 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
4171 | goto give_sigsegv; | |
4172 | } | |
4173 | ||
4174 | qemu_log("%s: 1\n", __FUNCTION__); | |
4175 | if (__put_user(set->sig[0], &frame->sc.oldmask[0])) { | |
4176 | goto give_sigsegv; | |
4177 | } | |
4178 | ||
4179 | save_sigregs(env, &frame->sregs); | |
4180 | ||
4181 | __put_user((abi_ulong)(unsigned long)&frame->sregs, | |
4182 | (abi_ulong *)&frame->sc.sregs); | |
4183 | ||
4184 | /* Set up to return from userspace. If provided, use a stub | |
4185 | already in userspace. */ | |
4186 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
4187 | env->regs[14] = (unsigned long) | |
4188 | ka->sa_restorer | PSW_ADDR_AMODE; | |
4189 | } else { | |
4190 | env->regs[14] = (unsigned long) | |
4191 | frame->retcode | PSW_ADDR_AMODE; | |
4192 | if (__put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn, | |
4193 | (uint16_t *)(frame->retcode))) | |
4194 | goto give_sigsegv; | |
4195 | } | |
4196 | ||
4197 | /* Set up backchain. */ | |
4198 | if (__put_user(env->regs[15], (abi_ulong *) frame)) { | |
4199 | goto give_sigsegv; | |
4200 | } | |
4201 | ||
4202 | /* Set up registers for signal handler */ | |
cb9c6268 | 4203 | env->regs[15] = frame_addr; |
a4c075f1 UH |
4204 | env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE; |
4205 | ||
4206 | env->regs[2] = sig; //map_signal(sig); | |
cb9c6268 | 4207 | env->regs[3] = frame_addr += offsetof(typeof(*frame), sc); |
a4c075f1 UH |
4208 | |
4209 | /* We forgot to include these in the sigcontext. | |
4210 | To avoid breaking binary compatibility, they are passed as args. */ | |
4211 | env->regs[4] = 0; // FIXME: no clue... current->thread.trap_no; | |
4212 | env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr; | |
4213 | ||
4214 | /* Place signal number on stack to allow backtrace from handler. */ | |
4215 | if (__put_user(env->regs[2], (int *) &frame->signo)) { | |
4216 | goto give_sigsegv; | |
4217 | } | |
4218 | unlock_user_struct(frame, frame_addr, 1); | |
4219 | return; | |
4220 | ||
4221 | give_sigsegv: | |
4222 | qemu_log("%s: give_sigsegv\n", __FUNCTION__); | |
4223 | unlock_user_struct(frame, frame_addr, 1); | |
4224 | force_sig(TARGET_SIGSEGV); | |
4225 | } | |
4226 | ||
4227 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
4228 | target_siginfo_t *info, | |
05390248 | 4229 | target_sigset_t *set, CPUS390XState *env) |
a4c075f1 UH |
4230 | { |
4231 | int i; | |
4232 | rt_sigframe *frame; | |
4233 | abi_ulong frame_addr; | |
4234 | ||
4235 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
4236 | qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, | |
4237 | (unsigned long long)frame_addr); | |
4238 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
4239 | goto give_sigsegv; | |
4240 | } | |
4241 | ||
4242 | qemu_log("%s: 1\n", __FUNCTION__); | |
4243 | if (copy_siginfo_to_user(&frame->info, info)) { | |
4244 | goto give_sigsegv; | |
4245 | } | |
4246 | ||
4247 | /* Create the ucontext. */ | |
6fea2ea4 PM |
4248 | __put_user(0, &frame->uc.tuc_flags); |
4249 | __put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link); | |
4250 | __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp); | |
a4c075f1 | 4251 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
6fea2ea4 PM |
4252 | &frame->uc.tuc_stack.ss_flags); |
4253 | __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size); | |
4254 | save_sigregs(env, &frame->uc.tuc_mcontext); | |
a4c075f1 UH |
4255 | for (i = 0; i < TARGET_NSIG_WORDS; i++) { |
4256 | __put_user((abi_ulong)set->sig[i], | |
6fea2ea4 | 4257 | (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]); |
a4c075f1 UH |
4258 | } |
4259 | ||
4260 | /* Set up to return from userspace. If provided, use a stub | |
4261 | already in userspace. */ | |
4262 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
4263 | env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE; | |
4264 | } else { | |
4265 | env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE; | |
4266 | if (__put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn, | |
4267 | (uint16_t *)(frame->retcode))) { | |
4268 | goto give_sigsegv; | |
4269 | } | |
4270 | } | |
4271 | ||
4272 | /* Set up backchain. */ | |
4273 | if (__put_user(env->regs[15], (abi_ulong *) frame)) { | |
4274 | goto give_sigsegv; | |
4275 | } | |
4276 | ||
4277 | /* Set up registers for signal handler */ | |
cb9c6268 | 4278 | env->regs[15] = frame_addr; |
a4c075f1 UH |
4279 | env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE; |
4280 | ||
4281 | env->regs[2] = sig; //map_signal(sig); | |
cb9c6268 EI |
4282 | env->regs[3] = frame_addr + offsetof(typeof(*frame), info); |
4283 | env->regs[4] = frame_addr + offsetof(typeof(*frame), uc); | |
a4c075f1 UH |
4284 | return; |
4285 | ||
4286 | give_sigsegv: | |
4287 | qemu_log("%s: give_sigsegv\n", __FUNCTION__); | |
4288 | unlock_user_struct(frame, frame_addr, 1); | |
4289 | force_sig(TARGET_SIGSEGV); | |
4290 | } | |
4291 | ||
4292 | static int | |
05390248 | 4293 | restore_sigregs(CPUS390XState *env, target_sigregs *sc) |
a4c075f1 UH |
4294 | { |
4295 | int err = 0; | |
4296 | int i; | |
4297 | ||
4298 | for (i = 0; i < 16; i++) { | |
4299 | err |= __get_user(env->regs[i], &sc->regs.gprs[i]); | |
4300 | } | |
4301 | ||
4302 | err |= __get_user(env->psw.mask, &sc->regs.psw.mask); | |
4303 | qemu_log("%s: sc->regs.psw.addr 0x%llx env->psw.addr 0x%llx\n", | |
4304 | __FUNCTION__, (unsigned long long)sc->regs.psw.addr, | |
4305 | (unsigned long long)env->psw.addr); | |
4306 | err |= __get_user(env->psw.addr, &sc->regs.psw.addr); | |
4307 | /* FIXME: 31-bit -> | PSW_ADDR_AMODE */ | |
4308 | ||
4309 | for (i = 0; i < 16; i++) { | |
4310 | err |= __get_user(env->aregs[i], &sc->regs.acrs[i]); | |
4311 | } | |
4312 | for (i = 0; i < 16; i++) { | |
4313 | err |= __get_user(env->fregs[i].ll, &sc->fpregs.fprs[i]); | |
4314 | } | |
4315 | ||
4316 | return err; | |
4317 | } | |
4318 | ||
05390248 | 4319 | long do_sigreturn(CPUS390XState *env) |
a4c075f1 UH |
4320 | { |
4321 | sigframe *frame; | |
4322 | abi_ulong frame_addr = env->regs[15]; | |
4323 | qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, | |
4324 | (unsigned long long)frame_addr); | |
4325 | target_sigset_t target_set; | |
4326 | sigset_t set; | |
4327 | ||
4328 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
4329 | goto badframe; | |
4330 | } | |
4331 | if (__get_user(target_set.sig[0], &frame->sc.oldmask[0])) { | |
4332 | goto badframe; | |
4333 | } | |
4334 | ||
4335 | target_to_host_sigset_internal(&set, &target_set); | |
4336 | sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */ | |
4337 | ||
4338 | if (restore_sigregs(env, &frame->sregs)) { | |
4339 | goto badframe; | |
4340 | } | |
4341 | ||
4342 | unlock_user_struct(frame, frame_addr, 0); | |
4343 | return env->regs[2]; | |
4344 | ||
4345 | badframe: | |
4346 | unlock_user_struct(frame, frame_addr, 0); | |
4347 | force_sig(TARGET_SIGSEGV); | |
4348 | return 0; | |
4349 | } | |
4350 | ||
05390248 | 4351 | long do_rt_sigreturn(CPUS390XState *env) |
a4c075f1 UH |
4352 | { |
4353 | rt_sigframe *frame; | |
4354 | abi_ulong frame_addr = env->regs[15]; | |
4355 | qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, | |
4356 | (unsigned long long)frame_addr); | |
4357 | sigset_t set; | |
4358 | ||
4359 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
4360 | goto badframe; | |
4361 | } | |
6fea2ea4 | 4362 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
a4c075f1 UH |
4363 | |
4364 | sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */ | |
4365 | ||
6fea2ea4 | 4366 | if (restore_sigregs(env, &frame->uc.tuc_mcontext)) { |
a4c075f1 UH |
4367 | goto badframe; |
4368 | } | |
4369 | ||
6fea2ea4 | 4370 | if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0, |
a4c075f1 UH |
4371 | get_sp_from_cpustate(env)) == -EFAULT) { |
4372 | goto badframe; | |
4373 | } | |
4374 | unlock_user_struct(frame, frame_addr, 0); | |
4375 | return env->regs[2]; | |
4376 | ||
4377 | badframe: | |
4378 | unlock_user_struct(frame, frame_addr, 0); | |
4379 | force_sig(TARGET_SIGSEGV); | |
4380 | return 0; | |
4381 | } | |
4382 | ||
bcd4933a NF |
4383 | #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) |
4384 | ||
4385 | /* FIXME: Many of the structures are defined for both PPC and PPC64, but | |
4386 | the signal handling is different enough that we haven't implemented | |
4387 | support for PPC64 yet. Hence the restriction above. | |
4388 | ||
4389 | There are various #if'd blocks for code for TARGET_PPC64. These | |
4390 | blocks should go away so that we can successfully run 32-bit and | |
4391 | 64-bit binaries on a QEMU configured for PPC64. */ | |
4392 | ||
4393 | /* Size of dummy stack frame allocated when calling signal handler. | |
4394 | See arch/powerpc/include/asm/ptrace.h. */ | |
4395 | #if defined(TARGET_PPC64) | |
4396 | #define SIGNAL_FRAMESIZE 128 | |
4397 | #else | |
4398 | #define SIGNAL_FRAMESIZE 64 | |
4399 | #endif | |
4400 | ||
4401 | /* See arch/powerpc/include/asm/sigcontext.h. */ | |
4402 | struct target_sigcontext { | |
4403 | target_ulong _unused[4]; | |
4404 | int32_t signal; | |
4405 | #if defined(TARGET_PPC64) | |
4406 | int32_t pad0; | |
4407 | #endif | |
4408 | target_ulong handler; | |
4409 | target_ulong oldmask; | |
4410 | target_ulong regs; /* struct pt_regs __user * */ | |
4411 | /* TODO: PPC64 includes extra bits here. */ | |
4412 | }; | |
4413 | ||
4414 | /* Indices for target_mcontext.mc_gregs, below. | |
4415 | See arch/powerpc/include/asm/ptrace.h for details. */ | |
4416 | enum { | |
4417 | TARGET_PT_R0 = 0, | |
4418 | TARGET_PT_R1 = 1, | |
4419 | TARGET_PT_R2 = 2, | |
4420 | TARGET_PT_R3 = 3, | |
4421 | TARGET_PT_R4 = 4, | |
4422 | TARGET_PT_R5 = 5, | |
4423 | TARGET_PT_R6 = 6, | |
4424 | TARGET_PT_R7 = 7, | |
4425 | TARGET_PT_R8 = 8, | |
4426 | TARGET_PT_R9 = 9, | |
4427 | TARGET_PT_R10 = 10, | |
4428 | TARGET_PT_R11 = 11, | |
4429 | TARGET_PT_R12 = 12, | |
4430 | TARGET_PT_R13 = 13, | |
4431 | TARGET_PT_R14 = 14, | |
4432 | TARGET_PT_R15 = 15, | |
4433 | TARGET_PT_R16 = 16, | |
4434 | TARGET_PT_R17 = 17, | |
4435 | TARGET_PT_R18 = 18, | |
4436 | TARGET_PT_R19 = 19, | |
4437 | TARGET_PT_R20 = 20, | |
4438 | TARGET_PT_R21 = 21, | |
4439 | TARGET_PT_R22 = 22, | |
4440 | TARGET_PT_R23 = 23, | |
4441 | TARGET_PT_R24 = 24, | |
4442 | TARGET_PT_R25 = 25, | |
4443 | TARGET_PT_R26 = 26, | |
4444 | TARGET_PT_R27 = 27, | |
4445 | TARGET_PT_R28 = 28, | |
4446 | TARGET_PT_R29 = 29, | |
4447 | TARGET_PT_R30 = 30, | |
4448 | TARGET_PT_R31 = 31, | |
4449 | TARGET_PT_NIP = 32, | |
4450 | TARGET_PT_MSR = 33, | |
4451 | TARGET_PT_ORIG_R3 = 34, | |
4452 | TARGET_PT_CTR = 35, | |
4453 | TARGET_PT_LNK = 36, | |
4454 | TARGET_PT_XER = 37, | |
4455 | TARGET_PT_CCR = 38, | |
4456 | /* Yes, there are two registers with #39. One is 64-bit only. */ | |
4457 | TARGET_PT_MQ = 39, | |
4458 | TARGET_PT_SOFTE = 39, | |
4459 | TARGET_PT_TRAP = 40, | |
4460 | TARGET_PT_DAR = 41, | |
4461 | TARGET_PT_DSISR = 42, | |
4462 | TARGET_PT_RESULT = 43, | |
4463 | TARGET_PT_REGS_COUNT = 44 | |
4464 | }; | |
4465 | ||
4466 | /* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC; | |
4467 | on 64-bit PPC, sigcontext and mcontext are one and the same. */ | |
4468 | struct target_mcontext { | |
4469 | target_ulong mc_gregs[48]; | |
4470 | /* Includes fpscr. */ | |
4471 | uint64_t mc_fregs[33]; | |
4472 | target_ulong mc_pad[2]; | |
4473 | /* We need to handle Altivec and SPE at the same time, which no | |
4474 | kernel needs to do. Fortunately, the kernel defines this bit to | |
4475 | be Altivec-register-large all the time, rather than trying to | |
4476 | twiddle it based on the specific platform. */ | |
4477 | union { | |
4478 | /* SPE vector registers. One extra for SPEFSCR. */ | |
4479 | uint32_t spe[33]; | |
4480 | /* Altivec vector registers. The packing of VSCR and VRSAVE | |
4481 | varies depending on whether we're PPC64 or not: PPC64 splits | |
4482 | them apart; PPC32 stuffs them together. */ | |
4483 | #if defined(TARGET_PPC64) | |
3efa9a67 | 4484 | #define QEMU_NVRREG 34 |
bcd4933a | 4485 | #else |
3efa9a67 | 4486 | #define QEMU_NVRREG 33 |
bcd4933a | 4487 | #endif |
c227f099 | 4488 | ppc_avr_t altivec[QEMU_NVRREG]; |
3efa9a67 | 4489 | #undef QEMU_NVRREG |
bcd4933a NF |
4490 | } mc_vregs __attribute__((__aligned__(16))); |
4491 | }; | |
4492 | ||
4493 | struct target_ucontext { | |
60e99246 AJ |
4494 | target_ulong tuc_flags; |
4495 | target_ulong tuc_link; /* struct ucontext __user * */ | |
4496 | struct target_sigaltstack tuc_stack; | |
bcd4933a | 4497 | #if !defined(TARGET_PPC64) |
60e99246 AJ |
4498 | int32_t tuc_pad[7]; |
4499 | target_ulong tuc_regs; /* struct mcontext __user * | |
bcd4933a NF |
4500 | points to uc_mcontext field */ |
4501 | #endif | |
60e99246 | 4502 | target_sigset_t tuc_sigmask; |
bcd4933a | 4503 | #if defined(TARGET_PPC64) |
c227f099 | 4504 | target_sigset_t unused[15]; /* Allow for uc_sigmask growth */ |
60e99246 | 4505 | struct target_sigcontext tuc_mcontext; |
bcd4933a | 4506 | #else |
60e99246 AJ |
4507 | int32_t tuc_maskext[30]; |
4508 | int32_t tuc_pad2[3]; | |
4509 | struct target_mcontext tuc_mcontext; | |
bcd4933a NF |
4510 | #endif |
4511 | }; | |
4512 | ||
4513 | /* See arch/powerpc/kernel/signal_32.c. */ | |
4514 | struct target_sigframe { | |
4515 | struct target_sigcontext sctx; | |
4516 | struct target_mcontext mctx; | |
4517 | int32_t abigap[56]; | |
4518 | }; | |
4519 | ||
4520 | struct target_rt_sigframe { | |
4521 | struct target_siginfo info; | |
4522 | struct target_ucontext uc; | |
4523 | int32_t abigap[56]; | |
4524 | }; | |
4525 | ||
4526 | /* We use the mc_pad field for the signal return trampoline. */ | |
4527 | #define tramp mc_pad | |
4528 | ||
4529 | /* See arch/powerpc/kernel/signal.c. */ | |
4530 | static target_ulong get_sigframe(struct target_sigaction *ka, | |
05390248 | 4531 | CPUPPCState *env, |
bcd4933a NF |
4532 | int frame_size) |
4533 | { | |
4534 | target_ulong oldsp, newsp; | |
4535 | ||
4536 | oldsp = env->gpr[1]; | |
4537 | ||
4538 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && | |
32a2003a | 4539 | (sas_ss_flags(oldsp) == 0)) { |
bcd4933a NF |
4540 | oldsp = (target_sigaltstack_used.ss_sp |
4541 | + target_sigaltstack_used.ss_size); | |
4542 | } | |
4543 | ||
4544 | newsp = (oldsp - frame_size) & ~0xFUL; | |
4545 | ||
4546 | return newsp; | |
4547 | } | |
4548 | ||
05390248 | 4549 | static int save_user_regs(CPUPPCState *env, struct target_mcontext *frame, |
bcd4933a NF |
4550 | int sigret) |
4551 | { | |
4552 | target_ulong msr = env->msr; | |
4553 | int i; | |
4554 | target_ulong ccr = 0; | |
4555 | ||
4556 | /* In general, the kernel attempts to be intelligent about what it | |
4557 | needs to save for Altivec/FP/SPE registers. We don't care that | |
4558 | much, so we just go ahead and save everything. */ | |
4559 | ||
4560 | /* Save general registers. */ | |
4561 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
4562 | if (__put_user(env->gpr[i], &frame->mc_gregs[i])) { | |
4563 | return 1; | |
4564 | } | |
4565 | } | |
4566 | if (__put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]) | |
4567 | || __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]) | |
4568 | || __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]) | |
4569 | || __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER])) | |
4570 | return 1; | |
4571 | ||
4572 | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { | |
4573 | ccr |= env->crf[i] << (32 - ((i + 1) * 4)); | |
4574 | } | |
4575 | if (__put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR])) | |
4576 | return 1; | |
4577 | ||
4578 | /* Save Altivec registers if necessary. */ | |
4579 | if (env->insns_flags & PPC_ALTIVEC) { | |
4580 | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { | |
c227f099 AL |
4581 | ppc_avr_t *avr = &env->avr[i]; |
4582 | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; | |
bcd4933a NF |
4583 | |
4584 | if (__put_user(avr->u64[0], &vreg->u64[0]) || | |
4585 | __put_user(avr->u64[1], &vreg->u64[1])) { | |
4586 | return 1; | |
4587 | } | |
4588 | } | |
4589 | /* Set MSR_VR in the saved MSR value to indicate that | |
4590 | frame->mc_vregs contains valid data. */ | |
4591 | msr |= MSR_VR; | |
4592 | if (__put_user((uint32_t)env->spr[SPR_VRSAVE], | |
4593 | &frame->mc_vregs.altivec[32].u32[3])) | |
4594 | return 1; | |
4595 | } | |
4596 | ||
4597 | /* Save floating point registers. */ | |
4598 | if (env->insns_flags & PPC_FLOAT) { | |
4599 | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { | |
4600 | if (__put_user(env->fpr[i], &frame->mc_fregs[i])) { | |
4601 | return 1; | |
4602 | } | |
4603 | } | |
4604 | if (__put_user((uint64_t) env->fpscr, &frame->mc_fregs[32])) | |
4605 | return 1; | |
4606 | } | |
4607 | ||
4608 | /* Save SPE registers. The kernel only saves the high half. */ | |
4609 | if (env->insns_flags & PPC_SPE) { | |
4610 | #if defined(TARGET_PPC64) | |
4611 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
4612 | if (__put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i])) { | |
4613 | return 1; | |
4614 | } | |
4615 | } | |
4616 | #else | |
4617 | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { | |
4618 | if (__put_user(env->gprh[i], &frame->mc_vregs.spe[i])) { | |
4619 | return 1; | |
4620 | } | |
4621 | } | |
4622 | #endif | |
4623 | /* Set MSR_SPE in the saved MSR value to indicate that | |
4624 | frame->mc_vregs contains valid data. */ | |
4625 | msr |= MSR_SPE; | |
4626 | if (__put_user(env->spe_fscr, &frame->mc_vregs.spe[32])) | |
4627 | return 1; | |
4628 | } | |
4629 | ||
4630 | /* Store MSR. */ | |
4631 | if (__put_user(msr, &frame->mc_gregs[TARGET_PT_MSR])) | |
4632 | return 1; | |
4633 | ||
4634 | /* Set up the sigreturn trampoline: li r0,sigret; sc. */ | |
4635 | if (sigret) { | |
4636 | if (__put_user(0x38000000UL | sigret, &frame->tramp[0]) || | |
4637 | __put_user(0x44000002UL, &frame->tramp[1])) { | |
4638 | return 1; | |
4639 | } | |
4640 | } | |
4641 | ||
4642 | return 0; | |
4643 | } | |
4644 | ||
05390248 | 4645 | static int restore_user_regs(CPUPPCState *env, |
bcd4933a NF |
4646 | struct target_mcontext *frame, int sig) |
4647 | { | |
4648 | target_ulong save_r2 = 0; | |
4649 | target_ulong msr; | |
4650 | target_ulong ccr; | |
4651 | ||
4652 | int i; | |
4653 | ||
4654 | if (!sig) { | |
4655 | save_r2 = env->gpr[2]; | |
4656 | } | |
4657 | ||
4658 | /* Restore general registers. */ | |
4659 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
4660 | if (__get_user(env->gpr[i], &frame->mc_gregs[i])) { | |
4661 | return 1; | |
4662 | } | |
4663 | } | |
4664 | if (__get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]) | |
4665 | || __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]) | |
4666 | || __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]) | |
4667 | || __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER])) | |
4668 | return 1; | |
4669 | if (__get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR])) | |
4670 | return 1; | |
4671 | ||
4672 | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { | |
4673 | env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf; | |
4674 | } | |
4675 | ||
4676 | if (!sig) { | |
4677 | env->gpr[2] = save_r2; | |
4678 | } | |
4679 | /* Restore MSR. */ | |
4680 | if (__get_user(msr, &frame->mc_gregs[TARGET_PT_MSR])) | |
4681 | return 1; | |
4682 | ||
4683 | /* If doing signal return, restore the previous little-endian mode. */ | |
4684 | if (sig) | |
4685 | env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE); | |
4686 | ||
4687 | /* Restore Altivec registers if necessary. */ | |
4688 | if (env->insns_flags & PPC_ALTIVEC) { | |
4689 | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { | |
c227f099 AL |
4690 | ppc_avr_t *avr = &env->avr[i]; |
4691 | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; | |
bcd4933a NF |
4692 | |
4693 | if (__get_user(avr->u64[0], &vreg->u64[0]) || | |
4694 | __get_user(avr->u64[1], &vreg->u64[1])) { | |
4695 | return 1; | |
4696 | } | |
4697 | } | |
4698 | /* Set MSR_VEC in the saved MSR value to indicate that | |
4699 | frame->mc_vregs contains valid data. */ | |
4700 | if (__get_user(env->spr[SPR_VRSAVE], | |
4701 | (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3]))) | |
4702 | return 1; | |
4703 | } | |
4704 | ||
4705 | /* Restore floating point registers. */ | |
4706 | if (env->insns_flags & PPC_FLOAT) { | |
4707 | uint64_t fpscr; | |
4708 | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { | |
4709 | if (__get_user(env->fpr[i], &frame->mc_fregs[i])) { | |
4710 | return 1; | |
4711 | } | |
4712 | } | |
4713 | if (__get_user(fpscr, &frame->mc_fregs[32])) | |
4714 | return 1; | |
4715 | env->fpscr = (uint32_t) fpscr; | |
4716 | } | |
4717 | ||
4718 | /* Save SPE registers. The kernel only saves the high half. */ | |
4719 | if (env->insns_flags & PPC_SPE) { | |
4720 | #if defined(TARGET_PPC64) | |
4721 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
4722 | uint32_t hi; | |
4723 | ||
4724 | if (__get_user(hi, &frame->mc_vregs.spe[i])) { | |
4725 | return 1; | |
4726 | } | |
4727 | env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]); | |
4728 | } | |
4729 | #else | |
4730 | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { | |
4731 | if (__get_user(env->gprh[i], &frame->mc_vregs.spe[i])) { | |
4732 | return 1; | |
4733 | } | |
4734 | } | |
4735 | #endif | |
4736 | if (__get_user(env->spe_fscr, &frame->mc_vregs.spe[32])) | |
4737 | return 1; | |
4738 | } | |
4739 | ||
4740 | return 0; | |
4741 | } | |
4742 | ||
4743 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 4744 | target_sigset_t *set, CPUPPCState *env) |
bcd4933a NF |
4745 | { |
4746 | struct target_sigframe *frame; | |
4747 | struct target_sigcontext *sc; | |
4748 | target_ulong frame_addr, newsp; | |
4749 | int err = 0; | |
4750 | int signal; | |
4751 | ||
4752 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
4753 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) | |
4754 | goto sigsegv; | |
4755 | sc = &frame->sctx; | |
4756 | ||
4757 | signal = current_exec_domain_sig(sig); | |
4758 | ||
beb526b1 | 4759 | err |= __put_user(ka->_sa_handler, &sc->handler); |
bcd4933a NF |
4760 | err |= __put_user(set->sig[0], &sc->oldmask); |
4761 | #if defined(TARGET_PPC64) | |
4762 | err |= __put_user(set->sig[0] >> 32, &sc->_unused[3]); | |
4763 | #else | |
4764 | err |= __put_user(set->sig[1], &sc->_unused[3]); | |
4765 | #endif | |
4766 | err |= __put_user(h2g(&frame->mctx), &sc->regs); | |
4767 | err |= __put_user(sig, &sc->signal); | |
4768 | ||
4769 | /* Save user regs. */ | |
4770 | err |= save_user_regs(env, &frame->mctx, TARGET_NR_sigreturn); | |
4771 | ||
4772 | /* The kernel checks for the presence of a VDSO here. We don't | |
4773 | emulate a vdso, so use a sigreturn system call. */ | |
4774 | env->lr = (target_ulong) h2g(frame->mctx.tramp); | |
4775 | ||
4776 | /* Turn off all fp exceptions. */ | |
4777 | env->fpscr = 0; | |
4778 | ||
4779 | /* Create a stack frame for the caller of the handler. */ | |
4780 | newsp = frame_addr - SIGNAL_FRAMESIZE; | |
beb526b1 | 4781 | err |= put_user(env->gpr[1], newsp, target_ulong); |
bcd4933a NF |
4782 | |
4783 | if (err) | |
4784 | goto sigsegv; | |
4785 | ||
4786 | /* Set up registers for signal handler. */ | |
4787 | env->gpr[1] = newsp; | |
4788 | env->gpr[3] = signal; | |
61993a67 | 4789 | env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx); |
bcd4933a NF |
4790 | env->nip = (target_ulong) ka->_sa_handler; |
4791 | /* Signal handlers are entered in big-endian mode. */ | |
4792 | env->msr &= ~MSR_LE; | |
4793 | ||
4794 | unlock_user_struct(frame, frame_addr, 1); | |
4795 | return; | |
4796 | ||
4797 | sigsegv: | |
4798 | unlock_user_struct(frame, frame_addr, 1); | |
eeacee4d | 4799 | qemu_log("segfaulting from setup_frame\n"); |
66393fb9 | 4800 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4801 | } |
4802 | ||
4803 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 4804 | target_siginfo_t *info, |
05390248 | 4805 | target_sigset_t *set, CPUPPCState *env) |
bcd4933a NF |
4806 | { |
4807 | struct target_rt_sigframe *rt_sf; | |
4808 | struct target_mcontext *frame; | |
4809 | target_ulong rt_sf_addr, newsp = 0; | |
4810 | int i, err = 0; | |
4811 | int signal; | |
4812 | ||
4813 | rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf)); | |
4814 | if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1)) | |
4815 | goto sigsegv; | |
4816 | ||
4817 | signal = current_exec_domain_sig(sig); | |
4818 | ||
4819 | err |= copy_siginfo_to_user(&rt_sf->info, info); | |
4820 | ||
60e99246 AJ |
4821 | err |= __put_user(0, &rt_sf->uc.tuc_flags); |
4822 | err |= __put_user(0, &rt_sf->uc.tuc_link); | |
bcd4933a | 4823 | err |= __put_user((target_ulong)target_sigaltstack_used.ss_sp, |
60e99246 | 4824 | &rt_sf->uc.tuc_stack.ss_sp); |
bcd4933a | 4825 | err |= __put_user(sas_ss_flags(env->gpr[1]), |
60e99246 | 4826 | &rt_sf->uc.tuc_stack.ss_flags); |
bcd4933a | 4827 | err |= __put_user(target_sigaltstack_used.ss_size, |
60e99246 AJ |
4828 | &rt_sf->uc.tuc_stack.ss_size); |
4829 | err |= __put_user(h2g (&rt_sf->uc.tuc_mcontext), | |
4830 | &rt_sf->uc.tuc_regs); | |
bcd4933a | 4831 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
60e99246 | 4832 | err |= __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]); |
bcd4933a NF |
4833 | } |
4834 | ||
60e99246 | 4835 | frame = &rt_sf->uc.tuc_mcontext; |
bcd4933a NF |
4836 | err |= save_user_regs(env, frame, TARGET_NR_rt_sigreturn); |
4837 | ||
4838 | /* The kernel checks for the presence of a VDSO here. We don't | |
4839 | emulate a vdso, so use a sigreturn system call. */ | |
4840 | env->lr = (target_ulong) h2g(frame->tramp); | |
4841 | ||
4842 | /* Turn off all fp exceptions. */ | |
4843 | env->fpscr = 0; | |
4844 | ||
4845 | /* Create a stack frame for the caller of the handler. */ | |
4846 | newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16); | |
4847 | err |= __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp); | |
4848 | ||
4849 | if (err) | |
4850 | goto sigsegv; | |
4851 | ||
4852 | /* Set up registers for signal handler. */ | |
4853 | env->gpr[1] = newsp; | |
4854 | env->gpr[3] = (target_ulong) signal; | |
4855 | env->gpr[4] = (target_ulong) h2g(&rt_sf->info); | |
4856 | env->gpr[5] = (target_ulong) h2g(&rt_sf->uc); | |
4857 | env->gpr[6] = (target_ulong) h2g(rt_sf); | |
4858 | env->nip = (target_ulong) ka->_sa_handler; | |
4859 | /* Signal handlers are entered in big-endian mode. */ | |
4860 | env->msr &= ~MSR_LE; | |
4861 | ||
4862 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4863 | return; | |
4864 | ||
4865 | sigsegv: | |
4866 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
eeacee4d | 4867 | qemu_log("segfaulting from setup_rt_frame\n"); |
66393fb9 | 4868 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4869 | |
4870 | } | |
4871 | ||
05390248 | 4872 | long do_sigreturn(CPUPPCState *env) |
bcd4933a NF |
4873 | { |
4874 | struct target_sigcontext *sc = NULL; | |
4875 | struct target_mcontext *sr = NULL; | |
b04636f8 | 4876 | target_ulong sr_addr = 0, sc_addr; |
bcd4933a | 4877 | sigset_t blocked; |
c227f099 | 4878 | target_sigset_t set; |
bcd4933a NF |
4879 | |
4880 | sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE; | |
4881 | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) | |
4882 | goto sigsegv; | |
4883 | ||
4884 | #if defined(TARGET_PPC64) | |
4885 | set.sig[0] = sc->oldmask + ((long)(sc->_unused[3]) << 32); | |
4886 | #else | |
4887 | if(__get_user(set.sig[0], &sc->oldmask) || | |
4888 | __get_user(set.sig[1], &sc->_unused[3])) | |
4889 | goto sigsegv; | |
4890 | #endif | |
4891 | target_to_host_sigset_internal(&blocked, &set); | |
4892 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
4893 | ||
4894 | if (__get_user(sr_addr, &sc->regs)) | |
4895 | goto sigsegv; | |
4896 | if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1)) | |
4897 | goto sigsegv; | |
4898 | if (restore_user_regs(env, sr, 1)) | |
4899 | goto sigsegv; | |
4900 | ||
4901 | unlock_user_struct(sr, sr_addr, 1); | |
4902 | unlock_user_struct(sc, sc_addr, 1); | |
4903 | return -TARGET_QEMU_ESIGRETURN; | |
4904 | ||
4905 | sigsegv: | |
4906 | unlock_user_struct(sr, sr_addr, 1); | |
4907 | unlock_user_struct(sc, sc_addr, 1); | |
eeacee4d | 4908 | qemu_log("segfaulting from do_sigreturn\n"); |
66393fb9 | 4909 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4910 | return 0; |
4911 | } | |
4912 | ||
4913 | /* See arch/powerpc/kernel/signal_32.c. */ | |
05390248 | 4914 | static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int sig) |
bcd4933a NF |
4915 | { |
4916 | struct target_mcontext *mcp; | |
4917 | target_ulong mcp_addr; | |
4918 | sigset_t blocked; | |
c227f099 | 4919 | target_sigset_t set; |
bcd4933a | 4920 | |
60e99246 | 4921 | if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext, tuc_sigmask), |
bcd4933a NF |
4922 | sizeof (set))) |
4923 | return 1; | |
4924 | ||
4925 | #if defined(TARGET_PPC64) | |
4926 | fprintf (stderr, "do_setcontext: not implemented\n"); | |
4927 | return 0; | |
4928 | #else | |
60e99246 | 4929 | if (__get_user(mcp_addr, &ucp->tuc_regs)) |
bcd4933a NF |
4930 | return 1; |
4931 | ||
4932 | if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1)) | |
4933 | return 1; | |
4934 | ||
4935 | target_to_host_sigset_internal(&blocked, &set); | |
4936 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
4937 | if (restore_user_regs(env, mcp, sig)) | |
4938 | goto sigsegv; | |
4939 | ||
4940 | unlock_user_struct(mcp, mcp_addr, 1); | |
4941 | return 0; | |
4942 | ||
4943 | sigsegv: | |
4944 | unlock_user_struct(mcp, mcp_addr, 1); | |
4945 | return 1; | |
4946 | #endif | |
4947 | } | |
4948 | ||
05390248 | 4949 | long do_rt_sigreturn(CPUPPCState *env) |
bcd4933a NF |
4950 | { |
4951 | struct target_rt_sigframe *rt_sf = NULL; | |
4952 | target_ulong rt_sf_addr; | |
4953 | ||
4954 | rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16; | |
4955 | if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1)) | |
4956 | goto sigsegv; | |
4957 | ||
4958 | if (do_setcontext(&rt_sf->uc, env, 1)) | |
4959 | goto sigsegv; | |
4960 | ||
4961 | do_sigaltstack(rt_sf_addr | |
60e99246 | 4962 | + offsetof(struct target_rt_sigframe, uc.tuc_stack), |
bcd4933a NF |
4963 | 0, env->gpr[1]); |
4964 | ||
4965 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4966 | return -TARGET_QEMU_ESIGRETURN; | |
4967 | ||
4968 | sigsegv: | |
4969 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
eeacee4d | 4970 | qemu_log("segfaulting from do_rt_sigreturn\n"); |
66393fb9 | 4971 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4972 | return 0; |
4973 | } | |
4974 | ||
492a8744 LV |
4975 | #elif defined(TARGET_M68K) |
4976 | ||
4977 | struct target_sigcontext { | |
4978 | abi_ulong sc_mask; | |
4979 | abi_ulong sc_usp; | |
4980 | abi_ulong sc_d0; | |
4981 | abi_ulong sc_d1; | |
4982 | abi_ulong sc_a0; | |
4983 | abi_ulong sc_a1; | |
4984 | unsigned short sc_sr; | |
4985 | abi_ulong sc_pc; | |
4986 | }; | |
4987 | ||
4988 | struct target_sigframe | |
4989 | { | |
4990 | abi_ulong pretcode; | |
4991 | int sig; | |
4992 | int code; | |
4993 | abi_ulong psc; | |
4994 | char retcode[8]; | |
4995 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; | |
4996 | struct target_sigcontext sc; | |
4997 | }; | |
7181155d | 4998 | |
c227f099 | 4999 | typedef int target_greg_t; |
7181155d | 5000 | #define TARGET_NGREG 18 |
c227f099 | 5001 | typedef target_greg_t target_gregset_t[TARGET_NGREG]; |
7181155d LV |
5002 | |
5003 | typedef struct target_fpregset { | |
5004 | int f_fpcntl[3]; | |
5005 | int f_fpregs[8*3]; | |
c227f099 | 5006 | } target_fpregset_t; |
7181155d LV |
5007 | |
5008 | struct target_mcontext { | |
5009 | int version; | |
c227f099 AL |
5010 | target_gregset_t gregs; |
5011 | target_fpregset_t fpregs; | |
7181155d LV |
5012 | }; |
5013 | ||
5014 | #define TARGET_MCONTEXT_VERSION 2 | |
5015 | ||
5016 | struct target_ucontext { | |
60e99246 AJ |
5017 | abi_ulong tuc_flags; |
5018 | abi_ulong tuc_link; | |
5019 | target_stack_t tuc_stack; | |
5020 | struct target_mcontext tuc_mcontext; | |
5021 | abi_long tuc_filler[80]; | |
5022 | target_sigset_t tuc_sigmask; | |
7181155d LV |
5023 | }; |
5024 | ||
5025 | struct target_rt_sigframe | |
5026 | { | |
5027 | abi_ulong pretcode; | |
5028 | int sig; | |
5029 | abi_ulong pinfo; | |
5030 | abi_ulong puc; | |
5031 | char retcode[8]; | |
5032 | struct target_siginfo info; | |
5033 | struct target_ucontext uc; | |
5034 | }; | |
492a8744 LV |
5035 | |
5036 | static int | |
05390248 AF |
5037 | setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env, |
5038 | abi_ulong mask) | |
492a8744 LV |
5039 | { |
5040 | int err = 0; | |
5041 | ||
5042 | err |= __put_user(mask, &sc->sc_mask); | |
5043 | err |= __put_user(env->aregs[7], &sc->sc_usp); | |
5044 | err |= __put_user(env->dregs[0], &sc->sc_d0); | |
5045 | err |= __put_user(env->dregs[1], &sc->sc_d1); | |
5046 | err |= __put_user(env->aregs[0], &sc->sc_a0); | |
5047 | err |= __put_user(env->aregs[1], &sc->sc_a1); | |
5048 | err |= __put_user(env->sr, &sc->sc_sr); | |
5049 | err |= __put_user(env->pc, &sc->sc_pc); | |
5050 | ||
5051 | return err; | |
5052 | } | |
5053 | ||
5054 | static int | |
05390248 | 5055 | restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc, int *pd0) |
492a8744 LV |
5056 | { |
5057 | int err = 0; | |
5058 | int temp; | |
5059 | ||
5060 | err |= __get_user(env->aregs[7], &sc->sc_usp); | |
5061 | err |= __get_user(env->dregs[1], &sc->sc_d1); | |
5062 | err |= __get_user(env->aregs[0], &sc->sc_a0); | |
5063 | err |= __get_user(env->aregs[1], &sc->sc_a1); | |
5064 | err |= __get_user(env->pc, &sc->sc_pc); | |
5065 | err |= __get_user(temp, &sc->sc_sr); | |
5066 | env->sr = (env->sr & 0xff00) | (temp & 0xff); | |
5067 | ||
5068 | *pd0 = tswapl(sc->sc_d0); | |
5069 | ||
5070 | return err; | |
5071 | } | |
5072 | ||
5073 | /* | |
5074 | * Determine which stack to use.. | |
5075 | */ | |
5076 | static inline abi_ulong | |
05390248 AF |
5077 | get_sigframe(struct target_sigaction *ka, CPUM68KState *regs, |
5078 | size_t frame_size) | |
492a8744 LV |
5079 | { |
5080 | unsigned long sp; | |
5081 | ||
5082 | sp = regs->aregs[7]; | |
5083 | ||
5084 | /* This is the X/Open sanctioned signal stack switching. */ | |
5085 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { | |
5086 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
5087 | } | |
5088 | ||
5089 | return ((sp - frame_size) & -8UL); | |
5090 | } | |
5091 | ||
5092 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 5093 | target_sigset_t *set, CPUM68KState *env) |
492a8744 LV |
5094 | { |
5095 | struct target_sigframe *frame; | |
5096 | abi_ulong frame_addr; | |
5097 | abi_ulong retcode_addr; | |
5098 | abi_ulong sc_addr; | |
5099 | int err = 0; | |
5100 | int i; | |
5101 | ||
5102 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
5103 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
5104 | goto give_sigsegv; | |
5105 | ||
5106 | err |= __put_user(sig, &frame->sig); | |
5107 | ||
5108 | sc_addr = frame_addr + offsetof(struct target_sigframe, sc); | |
5109 | err |= __put_user(sc_addr, &frame->psc); | |
5110 | ||
5111 | err |= setup_sigcontext(&frame->sc, env, set->sig[0]); | |
5112 | if (err) | |
5113 | goto give_sigsegv; | |
5114 | ||
5115 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
5116 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
5117 | goto give_sigsegv; | |
5118 | } | |
5119 | ||
5120 | /* Set up to return from userspace. */ | |
5121 | ||
5122 | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode); | |
5123 | err |= __put_user(retcode_addr, &frame->pretcode); | |
5124 | ||
5125 | /* moveq #,d0; trap #0 */ | |
5126 | ||
5127 | err |= __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16), | |
5128 | (long *)(frame->retcode)); | |
5129 | ||
5130 | if (err) | |
5131 | goto give_sigsegv; | |
5132 | ||
5133 | /* Set up to return from userspace */ | |
5134 | ||
5135 | env->aregs[7] = frame_addr; | |
5136 | env->pc = ka->_sa_handler; | |
5137 | ||
5138 | unlock_user_struct(frame, frame_addr, 1); | |
5139 | return; | |
5140 | ||
5141 | give_sigsegv: | |
5142 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 5143 | force_sig(TARGET_SIGSEGV); |
492a8744 LV |
5144 | } |
5145 | ||
7181155d | 5146 | static inline int target_rt_setup_ucontext(struct target_ucontext *uc, |
05390248 | 5147 | CPUM68KState *env) |
7181155d | 5148 | { |
60e99246 | 5149 | target_greg_t *gregs = uc->tuc_mcontext.gregs; |
7181155d LV |
5150 | int err; |
5151 | ||
60e99246 | 5152 | err = __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version); |
7181155d LV |
5153 | err |= __put_user(env->dregs[0], &gregs[0]); |
5154 | err |= __put_user(env->dregs[1], &gregs[1]); | |
5155 | err |= __put_user(env->dregs[2], &gregs[2]); | |
5156 | err |= __put_user(env->dregs[3], &gregs[3]); | |
5157 | err |= __put_user(env->dregs[4], &gregs[4]); | |
5158 | err |= __put_user(env->dregs[5], &gregs[5]); | |
5159 | err |= __put_user(env->dregs[6], &gregs[6]); | |
5160 | err |= __put_user(env->dregs[7], &gregs[7]); | |
5161 | err |= __put_user(env->aregs[0], &gregs[8]); | |
5162 | err |= __put_user(env->aregs[1], &gregs[9]); | |
5163 | err |= __put_user(env->aregs[2], &gregs[10]); | |
5164 | err |= __put_user(env->aregs[3], &gregs[11]); | |
5165 | err |= __put_user(env->aregs[4], &gregs[12]); | |
5166 | err |= __put_user(env->aregs[5], &gregs[13]); | |
5167 | err |= __put_user(env->aregs[6], &gregs[14]); | |
5168 | err |= __put_user(env->aregs[7], &gregs[15]); | |
5169 | err |= __put_user(env->pc, &gregs[16]); | |
5170 | err |= __put_user(env->sr, &gregs[17]); | |
5171 | ||
5172 | return err; | |
5173 | } | |
5174 | ||
05390248 | 5175 | static inline int target_rt_restore_ucontext(CPUM68KState *env, |
7181155d LV |
5176 | struct target_ucontext *uc, |
5177 | int *pd0) | |
5178 | { | |
5179 | int temp; | |
5180 | int err; | |
60e99246 | 5181 | target_greg_t *gregs = uc->tuc_mcontext.gregs; |
7181155d | 5182 | |
60e99246 | 5183 | err = __get_user(temp, &uc->tuc_mcontext.version); |
7181155d LV |
5184 | if (temp != TARGET_MCONTEXT_VERSION) |
5185 | goto badframe; | |
5186 | ||
5187 | /* restore passed registers */ | |
5188 | err |= __get_user(env->dregs[0], &gregs[0]); | |
5189 | err |= __get_user(env->dregs[1], &gregs[1]); | |
5190 | err |= __get_user(env->dregs[2], &gregs[2]); | |
5191 | err |= __get_user(env->dregs[3], &gregs[3]); | |
5192 | err |= __get_user(env->dregs[4], &gregs[4]); | |
5193 | err |= __get_user(env->dregs[5], &gregs[5]); | |
5194 | err |= __get_user(env->dregs[6], &gregs[6]); | |
5195 | err |= __get_user(env->dregs[7], &gregs[7]); | |
5196 | err |= __get_user(env->aregs[0], &gregs[8]); | |
5197 | err |= __get_user(env->aregs[1], &gregs[9]); | |
5198 | err |= __get_user(env->aregs[2], &gregs[10]); | |
5199 | err |= __get_user(env->aregs[3], &gregs[11]); | |
5200 | err |= __get_user(env->aregs[4], &gregs[12]); | |
5201 | err |= __get_user(env->aregs[5], &gregs[13]); | |
5202 | err |= __get_user(env->aregs[6], &gregs[14]); | |
5203 | err |= __get_user(env->aregs[7], &gregs[15]); | |
5204 | err |= __get_user(env->pc, &gregs[16]); | |
5205 | err |= __get_user(temp, &gregs[17]); | |
5206 | env->sr = (env->sr & 0xff00) | (temp & 0xff); | |
5207 | ||
5208 | *pd0 = env->dregs[0]; | |
5209 | return err; | |
5210 | ||
5211 | badframe: | |
5212 | return 1; | |
5213 | } | |
5214 | ||
492a8744 | 5215 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 5216 | target_siginfo_t *info, |
05390248 | 5217 | target_sigset_t *set, CPUM68KState *env) |
492a8744 | 5218 | { |
7181155d LV |
5219 | struct target_rt_sigframe *frame; |
5220 | abi_ulong frame_addr; | |
5221 | abi_ulong retcode_addr; | |
5222 | abi_ulong info_addr; | |
5223 | abi_ulong uc_addr; | |
5224 | int err = 0; | |
5225 | int i; | |
5226 | ||
5227 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
5228 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
5229 | goto give_sigsegv; | |
5230 | ||
5231 | err |= __put_user(sig, &frame->sig); | |
5232 | ||
5233 | info_addr = frame_addr + offsetof(struct target_rt_sigframe, info); | |
5234 | err |= __put_user(info_addr, &frame->pinfo); | |
5235 | ||
5236 | uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
5237 | err |= __put_user(uc_addr, &frame->puc); | |
5238 | ||
5239 | err |= copy_siginfo_to_user(&frame->info, info); | |
5240 | ||
5241 | /* Create the ucontext */ | |
5242 | ||
60e99246 AJ |
5243 | err |= __put_user(0, &frame->uc.tuc_flags); |
5244 | err |= __put_user(0, &frame->uc.tuc_link); | |
7181155d | 5245 | err |= __put_user(target_sigaltstack_used.ss_sp, |
60e99246 | 5246 | &frame->uc.tuc_stack.ss_sp); |
7181155d | 5247 | err |= __put_user(sas_ss_flags(env->aregs[7]), |
60e99246 | 5248 | &frame->uc.tuc_stack.ss_flags); |
7181155d | 5249 | err |= __put_user(target_sigaltstack_used.ss_size, |
60e99246 | 5250 | &frame->uc.tuc_stack.ss_size); |
7181155d LV |
5251 | err |= target_rt_setup_ucontext(&frame->uc, env); |
5252 | ||
5253 | if (err) | |
5254 | goto give_sigsegv; | |
5255 | ||
5256 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
60e99246 | 5257 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
7181155d LV |
5258 | goto give_sigsegv; |
5259 | } | |
5260 | ||
5261 | /* Set up to return from userspace. */ | |
5262 | ||
5263 | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode); | |
5264 | err |= __put_user(retcode_addr, &frame->pretcode); | |
5265 | ||
5266 | /* moveq #,d0; notb d0; trap #0 */ | |
5267 | ||
5268 | err |= __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16), | |
5269 | (long *)(frame->retcode + 0)); | |
5270 | err |= __put_user(0x4e40, (short *)(frame->retcode + 4)); | |
5271 | ||
5272 | if (err) | |
5273 | goto give_sigsegv; | |
5274 | ||
5275 | /* Set up to return from userspace */ | |
5276 | ||
5277 | env->aregs[7] = frame_addr; | |
5278 | env->pc = ka->_sa_handler; | |
5279 | ||
5280 | unlock_user_struct(frame, frame_addr, 1); | |
5281 | return; | |
5282 | ||
5283 | give_sigsegv: | |
5284 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 5285 | force_sig(TARGET_SIGSEGV); |
492a8744 LV |
5286 | } |
5287 | ||
05390248 | 5288 | long do_sigreturn(CPUM68KState *env) |
492a8744 LV |
5289 | { |
5290 | struct target_sigframe *frame; | |
5291 | abi_ulong frame_addr = env->aregs[7] - 4; | |
c227f099 | 5292 | target_sigset_t target_set; |
492a8744 LV |
5293 | sigset_t set; |
5294 | int d0, i; | |
5295 | ||
5296 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
5297 | goto badframe; | |
5298 | ||
5299 | /* set blocked signals */ | |
5300 | ||
5301 | if (__get_user(target_set.sig[0], &frame->sc.sc_mask)) | |
5302 | goto badframe; | |
5303 | ||
5304 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
5305 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
5306 | goto badframe; | |
5307 | } | |
5308 | ||
5309 | target_to_host_sigset_internal(&set, &target_set); | |
5310 | sigprocmask(SIG_SETMASK, &set, NULL); | |
5311 | ||
5312 | /* restore registers */ | |
5313 | ||
5314 | if (restore_sigcontext(env, &frame->sc, &d0)) | |
5315 | goto badframe; | |
5316 | ||
5317 | unlock_user_struct(frame, frame_addr, 0); | |
5318 | return d0; | |
5319 | ||
5320 | badframe: | |
5321 | unlock_user_struct(frame, frame_addr, 0); | |
5322 | force_sig(TARGET_SIGSEGV); | |
5323 | return 0; | |
5324 | } | |
5325 | ||
05390248 | 5326 | long do_rt_sigreturn(CPUM68KState *env) |
492a8744 | 5327 | { |
7181155d LV |
5328 | struct target_rt_sigframe *frame; |
5329 | abi_ulong frame_addr = env->aregs[7] - 4; | |
c227f099 | 5330 | target_sigset_t target_set; |
7181155d LV |
5331 | sigset_t set; |
5332 | int d0; | |
5333 | ||
5334 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
5335 | goto badframe; | |
5336 | ||
5337 | target_to_host_sigset_internal(&set, &target_set); | |
5338 | sigprocmask(SIG_SETMASK, &set, NULL); | |
5339 | ||
5340 | /* restore registers */ | |
5341 | ||
5342 | if (target_rt_restore_ucontext(env, &frame->uc, &d0)) | |
5343 | goto badframe; | |
5344 | ||
5345 | if (do_sigaltstack(frame_addr + | |
60e99246 | 5346 | offsetof(struct target_rt_sigframe, uc.tuc_stack), |
7181155d LV |
5347 | 0, get_sp_from_cpustate(env)) == -EFAULT) |
5348 | goto badframe; | |
5349 | ||
5350 | unlock_user_struct(frame, frame_addr, 0); | |
5351 | return d0; | |
5352 | ||
5353 | badframe: | |
5354 | unlock_user_struct(frame, frame_addr, 0); | |
5355 | force_sig(TARGET_SIGSEGV); | |
5356 | return 0; | |
492a8744 LV |
5357 | } |
5358 | ||
6049f4f8 RH |
5359 | #elif defined(TARGET_ALPHA) |
5360 | ||
5361 | struct target_sigcontext { | |
5362 | abi_long sc_onstack; | |
5363 | abi_long sc_mask; | |
5364 | abi_long sc_pc; | |
5365 | abi_long sc_ps; | |
5366 | abi_long sc_regs[32]; | |
5367 | abi_long sc_ownedfp; | |
5368 | abi_long sc_fpregs[32]; | |
5369 | abi_ulong sc_fpcr; | |
5370 | abi_ulong sc_fp_control; | |
5371 | abi_ulong sc_reserved1; | |
5372 | abi_ulong sc_reserved2; | |
5373 | abi_ulong sc_ssize; | |
5374 | abi_ulong sc_sbase; | |
5375 | abi_ulong sc_traparg_a0; | |
5376 | abi_ulong sc_traparg_a1; | |
5377 | abi_ulong sc_traparg_a2; | |
5378 | abi_ulong sc_fp_trap_pc; | |
5379 | abi_ulong sc_fp_trigger_sum; | |
5380 | abi_ulong sc_fp_trigger_inst; | |
5381 | }; | |
5382 | ||
5383 | struct target_ucontext { | |
60e99246 AJ |
5384 | abi_ulong tuc_flags; |
5385 | abi_ulong tuc_link; | |
5386 | abi_ulong tuc_osf_sigmask; | |
5387 | target_stack_t tuc_stack; | |
5388 | struct target_sigcontext tuc_mcontext; | |
5389 | target_sigset_t tuc_sigmask; | |
6049f4f8 RH |
5390 | }; |
5391 | ||
5392 | struct target_sigframe { | |
5393 | struct target_sigcontext sc; | |
5394 | unsigned int retcode[3]; | |
5395 | }; | |
5396 | ||
5397 | struct target_rt_sigframe { | |
5398 | target_siginfo_t info; | |
5399 | struct target_ucontext uc; | |
5400 | unsigned int retcode[3]; | |
5401 | }; | |
5402 | ||
5403 | #define INSN_MOV_R30_R16 0x47fe0410 | |
5404 | #define INSN_LDI_R0 0x201f0000 | |
5405 | #define INSN_CALLSYS 0x00000083 | |
5406 | ||
05390248 | 5407 | static int setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env, |
6049f4f8 RH |
5408 | abi_ulong frame_addr, target_sigset_t *set) |
5409 | { | |
5410 | int i, err = 0; | |
5411 | ||
5412 | err |= __put_user(on_sig_stack(frame_addr), &sc->sc_onstack); | |
5413 | err |= __put_user(set->sig[0], &sc->sc_mask); | |
5414 | err |= __put_user(env->pc, &sc->sc_pc); | |
5415 | err |= __put_user(8, &sc->sc_ps); | |
5416 | ||
5417 | for (i = 0; i < 31; ++i) { | |
5418 | err |= __put_user(env->ir[i], &sc->sc_regs[i]); | |
5419 | } | |
5420 | err |= __put_user(0, &sc->sc_regs[31]); | |
5421 | ||
5422 | for (i = 0; i < 31; ++i) { | |
5423 | err |= __put_user(env->fir[i], &sc->sc_fpregs[i]); | |
5424 | } | |
5425 | err |= __put_user(0, &sc->sc_fpregs[31]); | |
5426 | err |= __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr); | |
5427 | ||
5428 | err |= __put_user(0, &sc->sc_traparg_a0); /* FIXME */ | |
5429 | err |= __put_user(0, &sc->sc_traparg_a1); /* FIXME */ | |
5430 | err |= __put_user(0, &sc->sc_traparg_a2); /* FIXME */ | |
5431 | ||
5432 | return err; | |
5433 | } | |
5434 | ||
05390248 AF |
5435 | static int restore_sigcontext(CPUAlphaState *env, |
5436 | struct target_sigcontext *sc) | |
6049f4f8 RH |
5437 | { |
5438 | uint64_t fpcr; | |
5439 | int i, err = 0; | |
5440 | ||
5441 | err |= __get_user(env->pc, &sc->sc_pc); | |
5442 | ||
5443 | for (i = 0; i < 31; ++i) { | |
5444 | err |= __get_user(env->ir[i], &sc->sc_regs[i]); | |
5445 | } | |
5446 | for (i = 0; i < 31; ++i) { | |
5447 | err |= __get_user(env->fir[i], &sc->sc_fpregs[i]); | |
5448 | } | |
5449 | ||
5450 | err |= __get_user(fpcr, &sc->sc_fpcr); | |
5451 | cpu_alpha_store_fpcr(env, fpcr); | |
5452 | ||
5453 | return err; | |
5454 | } | |
5455 | ||
5456 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, | |
05390248 AF |
5457 | CPUAlphaState *env, |
5458 | unsigned long framesize) | |
6049f4f8 RH |
5459 | { |
5460 | abi_ulong sp = env->ir[IR_SP]; | |
5461 | ||
5462 | /* This is the X/Open sanctioned signal stack switching. */ | |
5463 | if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) { | |
5464 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
5465 | } | |
5466 | return (sp - framesize) & -32; | |
5467 | } | |
5468 | ||
5469 | static void setup_frame(int sig, struct target_sigaction *ka, | |
05390248 | 5470 | target_sigset_t *set, CPUAlphaState *env) |
6049f4f8 RH |
5471 | { |
5472 | abi_ulong frame_addr, r26; | |
5473 | struct target_sigframe *frame; | |
5474 | int err = 0; | |
5475 | ||
5476 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
5477 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
5478 | goto give_sigsegv; | |
5479 | } | |
5480 | ||
5481 | err |= setup_sigcontext(&frame->sc, env, frame_addr, set); | |
5482 | ||
5483 | if (ka->sa_restorer) { | |
5484 | r26 = ka->sa_restorer; | |
5485 | } else { | |
5486 | err |= __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); | |
5487 | err |= __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn, | |
5488 | &frame->retcode[1]); | |
5489 | err |= __put_user(INSN_CALLSYS, &frame->retcode[2]); | |
5490 | /* imb() */ | |
5491 | r26 = frame_addr; | |
5492 | } | |
5493 | ||
5494 | unlock_user_struct(frame, frame_addr, 1); | |
5495 | ||
5496 | if (err) { | |
5497 | give_sigsegv: | |
5498 | if (sig == TARGET_SIGSEGV) { | |
5499 | ka->_sa_handler = TARGET_SIG_DFL; | |
5500 | } | |
5501 | force_sig(TARGET_SIGSEGV); | |
5502 | } | |
5503 | ||
5504 | env->ir[IR_RA] = r26; | |
5505 | env->ir[IR_PV] = env->pc = ka->_sa_handler; | |
5506 | env->ir[IR_A0] = sig; | |
5507 | env->ir[IR_A1] = 0; | |
5508 | env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc); | |
5509 | env->ir[IR_SP] = frame_addr; | |
5510 | } | |
5511 | ||
5512 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
5513 | target_siginfo_t *info, | |
05390248 | 5514 | target_sigset_t *set, CPUAlphaState *env) |
6049f4f8 RH |
5515 | { |
5516 | abi_ulong frame_addr, r26; | |
5517 | struct target_rt_sigframe *frame; | |
5518 | int i, err = 0; | |
5519 | ||
5520 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
5521 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
5522 | goto give_sigsegv; | |
5523 | } | |
5524 | ||
5525 | err |= copy_siginfo_to_user(&frame->info, info); | |
5526 | ||
60e99246 AJ |
5527 | err |= __put_user(0, &frame->uc.tuc_flags); |
5528 | err |= __put_user(0, &frame->uc.tuc_link); | |
5529 | err |= __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask); | |
6049f4f8 | 5530 | err |= __put_user(target_sigaltstack_used.ss_sp, |
60e99246 | 5531 | &frame->uc.tuc_stack.ss_sp); |
6049f4f8 | 5532 | err |= __put_user(sas_ss_flags(env->ir[IR_SP]), |
60e99246 | 5533 | &frame->uc.tuc_stack.ss_flags); |
6049f4f8 | 5534 | err |= __put_user(target_sigaltstack_used.ss_size, |
60e99246 AJ |
5535 | &frame->uc.tuc_stack.ss_size); |
5536 | err |= setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set); | |
6049f4f8 | 5537 | for (i = 0; i < TARGET_NSIG_WORDS; ++i) { |
60e99246 | 5538 | err |= __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
6049f4f8 RH |
5539 | } |
5540 | ||
5541 | if (ka->sa_restorer) { | |
5542 | r26 = ka->sa_restorer; | |
5543 | } else { | |
5544 | err |= __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); | |
5545 | err |= __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn, | |
5546 | &frame->retcode[1]); | |
5547 | err |= __put_user(INSN_CALLSYS, &frame->retcode[2]); | |
5548 | /* imb(); */ | |
5549 | r26 = frame_addr; | |
5550 | } | |
5551 | ||
5552 | if (err) { | |
5553 | give_sigsegv: | |
5554 | if (sig == TARGET_SIGSEGV) { | |
5555 | ka->_sa_handler = TARGET_SIG_DFL; | |
5556 | } | |
5557 | force_sig(TARGET_SIGSEGV); | |
5558 | } | |
5559 | ||
5560 | env->ir[IR_RA] = r26; | |
5561 | env->ir[IR_PV] = env->pc = ka->_sa_handler; | |
5562 | env->ir[IR_A0] = sig; | |
5563 | env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info); | |
5564 | env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
5565 | env->ir[IR_SP] = frame_addr; | |
5566 | } | |
5567 | ||
05390248 | 5568 | long do_sigreturn(CPUAlphaState *env) |
6049f4f8 RH |
5569 | { |
5570 | struct target_sigcontext *sc; | |
5571 | abi_ulong sc_addr = env->ir[IR_A0]; | |
5572 | target_sigset_t target_set; | |
5573 | sigset_t set; | |
5574 | ||
5575 | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) { | |
5576 | goto badframe; | |
5577 | } | |
5578 | ||
5579 | target_sigemptyset(&target_set); | |
5580 | if (__get_user(target_set.sig[0], &sc->sc_mask)) { | |
5581 | goto badframe; | |
5582 | } | |
5583 | ||
5584 | target_to_host_sigset_internal(&set, &target_set); | |
5585 | sigprocmask(SIG_SETMASK, &set, NULL); | |
5586 | ||
5587 | if (restore_sigcontext(env, sc)) { | |
5588 | goto badframe; | |
5589 | } | |
5590 | unlock_user_struct(sc, sc_addr, 0); | |
5591 | return env->ir[IR_V0]; | |
5592 | ||
5593 | badframe: | |
5594 | unlock_user_struct(sc, sc_addr, 0); | |
5595 | force_sig(TARGET_SIGSEGV); | |
5596 | } | |
5597 | ||
05390248 | 5598 | long do_rt_sigreturn(CPUAlphaState *env) |
6049f4f8 RH |
5599 | { |
5600 | abi_ulong frame_addr = env->ir[IR_A0]; | |
5601 | struct target_rt_sigframe *frame; | |
5602 | sigset_t set; | |
5603 | ||
5604 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
5605 | goto badframe; | |
5606 | } | |
60e99246 | 5607 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
6049f4f8 RH |
5608 | sigprocmask(SIG_SETMASK, &set, NULL); |
5609 | ||
60e99246 | 5610 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) { |
6049f4f8 RH |
5611 | goto badframe; |
5612 | } | |
5613 | if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe, | |
60e99246 | 5614 | uc.tuc_stack), |
6049f4f8 RH |
5615 | 0, env->ir[IR_SP]) == -EFAULT) { |
5616 | goto badframe; | |
5617 | } | |
5618 | ||
5619 | unlock_user_struct(frame, frame_addr, 0); | |
5620 | return env->ir[IR_V0]; | |
5621 | ||
5622 | ||
5623 | badframe: | |
5624 | unlock_user_struct(frame, frame_addr, 0); | |
5625 | force_sig(TARGET_SIGSEGV); | |
5626 | } | |
5627 | ||
b346ff46 FB |
5628 | #else |
5629 | ||
624f7979 | 5630 | static void setup_frame(int sig, struct target_sigaction *ka, |
9349b4f9 | 5631 | target_sigset_t *set, CPUArchState *env) |
b346ff46 FB |
5632 | { |
5633 | fprintf(stderr, "setup_frame: not implemented\n"); | |
5634 | } | |
5635 | ||
624f7979 | 5636 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 | 5637 | target_siginfo_t *info, |
9349b4f9 | 5638 | target_sigset_t *set, CPUArchState *env) |
b346ff46 FB |
5639 | { |
5640 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
5641 | } | |
5642 | ||
9349b4f9 | 5643 | long do_sigreturn(CPUArchState *env) |
b346ff46 FB |
5644 | { |
5645 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 5646 | return -TARGET_ENOSYS; |
b346ff46 FB |
5647 | } |
5648 | ||
9349b4f9 | 5649 | long do_rt_sigreturn(CPUArchState *env) |
b346ff46 FB |
5650 | { |
5651 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 5652 | return -TARGET_ENOSYS; |
b346ff46 FB |
5653 | } |
5654 | ||
66fb9763 FB |
5655 | #endif |
5656 | ||
9349b4f9 | 5657 | void process_pending_signals(CPUArchState *cpu_env) |
66fb9763 | 5658 | { |
db6b81d4 | 5659 | CPUState *cpu = ENV_GET_CPU(cpu_env); |
66fb9763 | 5660 | int sig; |
992f48a0 | 5661 | abi_ulong handler; |
9de5e440 | 5662 | sigset_t set, old_set; |
c227f099 | 5663 | target_sigset_t target_old_set; |
624f7979 PB |
5664 | struct emulated_sigtable *k; |
5665 | struct target_sigaction *sa; | |
66fb9763 | 5666 | struct sigqueue *q; |
624f7979 | 5667 | TaskState *ts = cpu_env->opaque; |
3b46e624 | 5668 | |
624f7979 | 5669 | if (!ts->signal_pending) |
31e31b8a FB |
5670 | return; |
5671 | ||
624f7979 PB |
5672 | /* FIXME: This is not threadsafe. */ |
5673 | k = ts->sigtab; | |
66fb9763 FB |
5674 | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
5675 | if (k->pending) | |
31e31b8a | 5676 | goto handle_signal; |
66fb9763 | 5677 | k++; |
31e31b8a FB |
5678 | } |
5679 | /* if no signal is pending, just return */ | |
624f7979 | 5680 | ts->signal_pending = 0; |
31e31b8a | 5681 | return; |
66fb9763 | 5682 | |
31e31b8a | 5683 | handle_signal: |
66fb9763 | 5684 | #ifdef DEBUG_SIGNAL |
bc8a22cc | 5685 | fprintf(stderr, "qemu: process signal %d\n", sig); |
66fb9763 FB |
5686 | #endif |
5687 | /* dequeue signal */ | |
5688 | q = k->first; | |
5689 | k->first = q->next; | |
5690 | if (!k->first) | |
5691 | k->pending = 0; | |
3b46e624 | 5692 | |
db6b81d4 | 5693 | sig = gdb_handlesig(cpu, sig); |
1fddef4b | 5694 | if (!sig) { |
ca587a8e AJ |
5695 | sa = NULL; |
5696 | handler = TARGET_SIG_IGN; | |
5697 | } else { | |
5698 | sa = &sigact_table[sig - 1]; | |
5699 | handler = sa->_sa_handler; | |
1fddef4b | 5700 | } |
66fb9763 | 5701 | |
66fb9763 | 5702 | if (handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
5703 | /* default handler : ignore some signal. The other are job control or fatal */ |
5704 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { | |
5705 | kill(getpid(),SIGSTOP); | |
5706 | } else if (sig != TARGET_SIGCHLD && | |
5707 | sig != TARGET_SIGURG && | |
5708 | sig != TARGET_SIGWINCH && | |
5709 | sig != TARGET_SIGCONT) { | |
66fb9763 FB |
5710 | force_sig(sig); |
5711 | } | |
5712 | } else if (handler == TARGET_SIG_IGN) { | |
5713 | /* ignore sig */ | |
5714 | } else if (handler == TARGET_SIG_ERR) { | |
5715 | force_sig(sig); | |
5716 | } else { | |
9de5e440 | 5717 | /* compute the blocked signals during the handler execution */ |
624f7979 | 5718 | target_to_host_sigset(&set, &sa->sa_mask); |
9de5e440 FB |
5719 | /* SA_NODEFER indicates that the current signal should not be |
5720 | blocked during the handler */ | |
624f7979 | 5721 | if (!(sa->sa_flags & TARGET_SA_NODEFER)) |
9de5e440 | 5722 | sigaddset(&set, target_to_host_signal(sig)); |
3b46e624 | 5723 | |
9de5e440 FB |
5724 | /* block signals in the handler using Linux */ |
5725 | sigprocmask(SIG_BLOCK, &set, &old_set); | |
5726 | /* save the previous blocked signal state to restore it at the | |
5727 | end of the signal execution (see do_sigreturn) */ | |
9231944d | 5728 | host_to_target_sigset_internal(&target_old_set, &old_set); |
9de5e440 | 5729 | |
bc8a22cc | 5730 | /* if the CPU is in VM86 mode, we restore the 32 bit values */ |
84409ddb | 5731 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
bc8a22cc FB |
5732 | { |
5733 | CPUX86State *env = cpu_env; | |
5734 | if (env->eflags & VM_MASK) | |
5735 | save_v86_state(env); | |
5736 | } | |
5737 | #endif | |
9de5e440 | 5738 | /* prepare the stack frame of the virtual CPU */ |
ff970904 RH |
5739 | #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64) |
5740 | /* These targets do not have traditional signals. */ | |
5741 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
5742 | #else | |
624f7979 PB |
5743 | if (sa->sa_flags & TARGET_SA_SIGINFO) |
5744 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
66fb9763 | 5745 | else |
624f7979 | 5746 | setup_frame(sig, sa, &target_old_set, cpu_env); |
ff970904 | 5747 | #endif |
624f7979 PB |
5748 | if (sa->sa_flags & TARGET_SA_RESETHAND) |
5749 | sa->_sa_handler = TARGET_SIG_DFL; | |
31e31b8a | 5750 | } |
66fb9763 | 5751 | if (q != &k->info) |
624f7979 | 5752 | free_sigqueue(cpu_env, q); |
66fb9763 | 5753 | } |