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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 | |
17 | * along with this program; if not, write to the Free Software | |
530e7615 BS |
18 | * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | * MA 02110-1301, USA. | |
31e31b8a FB |
20 | */ |
21 | #include <stdlib.h> | |
22 | #include <stdio.h> | |
66fb9763 | 23 | #include <string.h> |
31e31b8a | 24 | #include <stdarg.h> |
2677e107 | 25 | #include <unistd.h> |
31e31b8a | 26 | #include <signal.h> |
66fb9763 | 27 | #include <errno.h> |
31e31b8a FB |
28 | #include <sys/ucontext.h> |
29 | ||
3ef693a0 | 30 | #include "qemu.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 | ||
9e5f5284 FB |
46 | static uint8_t host_to_target_signal_table[65] = { |
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 PB |
82 | /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with |
83 | host libpthread signals. This assumes noone actually uses SIGRTMAX :-/ | |
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 FB |
88 | }; |
89 | static uint8_t target_to_host_signal_table[65]; | |
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 | ||
31e31b8a FB |
103 | static inline int host_to_target_signal(int sig) |
104 | { | |
4cb05961 PB |
105 | if (sig > 64) |
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 | { |
4cb05961 PB |
112 | if (sig > 64) |
113 | return sig; | |
9e5f5284 | 114 | return target_to_host_signal_table[sig]; |
31e31b8a FB |
115 | } |
116 | ||
f5545b5c PB |
117 | static inline void target_sigemptyset(target_sigset_t *set) |
118 | { | |
119 | memset(set, 0, sizeof(*set)); | |
120 | } | |
121 | ||
122 | static inline void target_sigaddset(target_sigset_t *set, int signum) | |
123 | { | |
124 | signum--; | |
125 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
126 | set->sig[signum / TARGET_NSIG_BPW] |= mask; | |
127 | } | |
128 | ||
129 | static inline int target_sigismember(const target_sigset_t *set, int signum) | |
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 | ||
5fafdf24 | 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 | ||
9231944d FB |
148 | void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) |
149 | { | |
150 | target_sigset_t d1; | |
151 | int i; | |
152 | ||
153 | host_to_target_sigset_internal(&d1, s); | |
154 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
53a5960a | 155 | d->sig[i] = tswapl(d1.sig[i]); |
9231944d FB |
156 | } |
157 | ||
8fcd3692 BS |
158 | static void target_to_host_sigset_internal(sigset_t *d, |
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 | ||
9231944d FB |
170 | void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) |
171 | { | |
172 | target_sigset_t s1; | |
173 | int i; | |
174 | ||
175 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
53a5960a | 176 | s1.sig[i] = tswapl(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 | { | |
9e5f5284 FB |
183 | target_sigset_t d; |
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 | { |
9e5f5284 FB |
191 | target_sigset_t d; |
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 | ||
5fafdf24 | 202 | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
9de5e440 | 203 | const siginfo_t *info) |
66fb9763 | 204 | { |
9de5e440 FB |
205 | int sig; |
206 | sig = host_to_target_signal(info->si_signo); | |
207 | tinfo->si_signo = sig; | |
208 | tinfo->si_errno = 0; | |
afd7cd92 | 209 | tinfo->si_code = info->si_code; |
5fafdf24 | 210 | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV || |
447db213 | 211 | sig == SIGBUS || sig == SIGTRAP) { |
9de5e440 FB |
212 | /* should never come here, but who knows. The information for |
213 | the target is irrelevant */ | |
214 | tinfo->_sifields._sigfault._addr = 0; | |
7f7f7c84 TS |
215 | } else if (sig == SIGIO) { |
216 | tinfo->_sifields._sigpoll._fd = info->si_fd; | |
9de5e440 FB |
217 | } else if (sig >= TARGET_SIGRTMIN) { |
218 | tinfo->_sifields._rt._pid = info->si_pid; | |
219 | tinfo->_sifields._rt._uid = info->si_uid; | |
220 | /* XXX: potential problem if 64 bit */ | |
5fafdf24 | 221 | tinfo->_sifields._rt._sigval.sival_ptr = |
459a4017 | 222 | (abi_ulong)(unsigned long)info->si_value.sival_ptr; |
9de5e440 FB |
223 | } |
224 | } | |
225 | ||
5fafdf24 | 226 | static void tswap_siginfo(target_siginfo_t *tinfo, |
9de5e440 FB |
227 | const target_siginfo_t *info) |
228 | { | |
229 | int sig; | |
230 | sig = info->si_signo; | |
231 | tinfo->si_signo = tswap32(sig); | |
66fb9763 FB |
232 | tinfo->si_errno = tswap32(info->si_errno); |
233 | tinfo->si_code = tswap32(info->si_code); | |
5fafdf24 | 234 | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV || |
447db213 | 235 | sig == SIGBUS || sig == SIGTRAP) { |
5fafdf24 | 236 | tinfo->_sifields._sigfault._addr = |
9de5e440 | 237 | tswapl(info->_sifields._sigfault._addr); |
7f7f7c84 TS |
238 | } else if (sig == SIGIO) { |
239 | tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd); | |
9de5e440 FB |
240 | } else if (sig >= TARGET_SIGRTMIN) { |
241 | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); | |
242 | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); | |
5fafdf24 | 243 | tinfo->_sifields._rt._sigval.sival_ptr = |
9de5e440 FB |
244 | tswapl(info->_sifields._rt._sigval.sival_ptr); |
245 | } | |
246 | } | |
247 | ||
248 | ||
249 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) | |
250 | { | |
251 | host_to_target_siginfo_noswap(tinfo, info); | |
252 | tswap_siginfo(tinfo, tinfo); | |
66fb9763 FB |
253 | } |
254 | ||
9de5e440 | 255 | /* XXX: we support only POSIX RT signals are used. */ |
aa1f17c1 | 256 | /* XXX: find a solution for 64 bit (additional malloced data is needed) */ |
9de5e440 | 257 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
66fb9763 FB |
258 | { |
259 | info->si_signo = tswap32(tinfo->si_signo); | |
260 | info->si_errno = tswap32(tinfo->si_errno); | |
261 | info->si_code = tswap32(tinfo->si_code); | |
9de5e440 FB |
262 | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
263 | info->si_uid = tswap32(tinfo->_sifields._rt._uid); | |
5fafdf24 | 264 | info->si_value.sival_ptr = |
459a4017 | 265 | (void *)(long)tswapl(tinfo->_sifields._rt._sigval.sival_ptr); |
66fb9763 FB |
266 | } |
267 | ||
ca587a8e AJ |
268 | static int fatal_signal (int sig) |
269 | { | |
270 | switch (sig) { | |
271 | case TARGET_SIGCHLD: | |
272 | case TARGET_SIGURG: | |
273 | case TARGET_SIGWINCH: | |
274 | /* Ignored by default. */ | |
275 | return 0; | |
276 | case TARGET_SIGCONT: | |
277 | case TARGET_SIGSTOP: | |
278 | case TARGET_SIGTSTP: | |
279 | case TARGET_SIGTTIN: | |
280 | case TARGET_SIGTTOU: | |
281 | /* Job control signals. */ | |
282 | return 0; | |
283 | default: | |
284 | return 1; | |
285 | } | |
286 | } | |
287 | ||
31e31b8a FB |
288 | void signal_init(void) |
289 | { | |
290 | struct sigaction act; | |
624f7979 | 291 | struct sigaction oact; |
9e5f5284 | 292 | int i, j; |
624f7979 | 293 | int host_sig; |
31e31b8a | 294 | |
9e5f5284 FB |
295 | /* generate signal conversion tables */ |
296 | for(i = 1; i <= 64; i++) { | |
297 | if (host_to_target_signal_table[i] == 0) | |
298 | host_to_target_signal_table[i] = i; | |
299 | } | |
300 | for(i = 1; i <= 64; i++) { | |
301 | j = host_to_target_signal_table[i]; | |
302 | target_to_host_signal_table[j] = i; | |
303 | } | |
3b46e624 | 304 | |
9de5e440 FB |
305 | /* set all host signal handlers. ALL signals are blocked during |
306 | the handlers to serialize them. */ | |
624f7979 PB |
307 | memset(sigact_table, 0, sizeof(sigact_table)); |
308 | ||
9de5e440 | 309 | sigfillset(&act.sa_mask); |
31e31b8a FB |
310 | act.sa_flags = SA_SIGINFO; |
311 | act.sa_sigaction = host_signal_handler; | |
624f7979 PB |
312 | for(i = 1; i <= TARGET_NSIG; i++) { |
313 | host_sig = target_to_host_signal(i); | |
314 | sigaction(host_sig, NULL, &oact); | |
315 | if (oact.sa_sigaction == (void *)SIG_IGN) { | |
316 | sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN; | |
317 | } else if (oact.sa_sigaction == (void *)SIG_DFL) { | |
318 | sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL; | |
319 | } | |
320 | /* If there's already a handler installed then something has | |
321 | gone horribly wrong, so don't even try to handle that case. */ | |
ca587a8e AJ |
322 | /* Install some handlers for our own use. We need at least |
323 | SIGSEGV and SIGBUS, to detect exceptions. We can not just | |
324 | trap all signals because it affects syscall interrupt | |
325 | behavior. But do trap all default-fatal signals. */ | |
326 | if (fatal_signal (i)) | |
624f7979 | 327 | sigaction(host_sig, &act, NULL); |
31e31b8a | 328 | } |
66fb9763 FB |
329 | } |
330 | ||
331 | /* signal queue handling */ | |
332 | ||
624f7979 | 333 | static inline struct sigqueue *alloc_sigqueue(CPUState *env) |
66fb9763 | 334 | { |
624f7979 PB |
335 | TaskState *ts = env->opaque; |
336 | struct sigqueue *q = ts->first_free; | |
66fb9763 FB |
337 | if (!q) |
338 | return NULL; | |
624f7979 | 339 | ts->first_free = q->next; |
66fb9763 | 340 | return q; |
31e31b8a FB |
341 | } |
342 | ||
624f7979 | 343 | static inline void free_sigqueue(CPUState *env, struct sigqueue *q) |
66fb9763 | 344 | { |
624f7979 PB |
345 | TaskState *ts = env->opaque; |
346 | q->next = ts->first_free; | |
347 | ts->first_free = q; | |
66fb9763 FB |
348 | } |
349 | ||
9de5e440 | 350 | /* abort execution with signal */ |
8fcd3692 | 351 | static void __attribute((noreturn)) force_sig(int sig) |
66fb9763 FB |
352 | { |
353 | int host_sig; | |
66fb9763 | 354 | host_sig = target_to_host_signal(sig); |
5fafdf24 | 355 | fprintf(stderr, "qemu: uncaught target signal %d (%s) - exiting\n", |
66fb9763 | 356 | sig, strsignal(host_sig)); |
9de5e440 | 357 | #if 1 |
ca587a8e | 358 | gdb_signalled(thread_env, sig); |
66fb9763 | 359 | _exit(-host_sig); |
9de5e440 FB |
360 | #else |
361 | { | |
362 | struct sigaction act; | |
363 | sigemptyset(&act.sa_mask); | |
364 | act.sa_flags = SA_SIGINFO; | |
365 | act.sa_sigaction = SIG_DFL; | |
366 | sigaction(SIGABRT, &act, NULL); | |
367 | abort(); | |
368 | } | |
369 | #endif | |
66fb9763 FB |
370 | } |
371 | ||
9de5e440 FB |
372 | /* queue a signal so that it will be send to the virtual CPU as soon |
373 | as possible */ | |
624f7979 | 374 | int queue_signal(CPUState *env, int sig, target_siginfo_t *info) |
31e31b8a | 375 | { |
624f7979 PB |
376 | TaskState *ts = env->opaque; |
377 | struct emulated_sigtable *k; | |
9de5e440 | 378 | struct sigqueue *q, **pq; |
992f48a0 | 379 | abi_ulong handler; |
ca587a8e | 380 | int queue; |
66fb9763 | 381 | |
9de5e440 | 382 | #if defined(DEBUG_SIGNAL) |
5fafdf24 | 383 | fprintf(stderr, "queue_signal: sig=%d\n", |
9de5e440 | 384 | sig); |
66fb9763 | 385 | #endif |
624f7979 | 386 | k = &ts->sigtab[sig - 1]; |
ca587a8e | 387 | queue = gdb_queuesig (); |
624f7979 | 388 | handler = sigact_table[sig - 1]._sa_handler; |
ca587a8e | 389 | if (!queue && handler == TARGET_SIG_DFL) { |
60b19691 TS |
390 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { |
391 | kill(getpid(),SIGSTOP); | |
392 | return 0; | |
393 | } else | |
66fb9763 | 394 | /* default handler : ignore some signal. The other are fatal */ |
5fafdf24 TS |
395 | if (sig != TARGET_SIGCHLD && |
396 | sig != TARGET_SIGURG && | |
60b19691 TS |
397 | sig != TARGET_SIGWINCH && |
398 | sig != TARGET_SIGCONT) { | |
66fb9763 | 399 | force_sig(sig); |
9de5e440 FB |
400 | } else { |
401 | return 0; /* indicate ignored */ | |
66fb9763 | 402 | } |
ca587a8e | 403 | } else if (!queue && handler == TARGET_SIG_IGN) { |
66fb9763 | 404 | /* ignore signal */ |
9de5e440 | 405 | return 0; |
ca587a8e | 406 | } else if (!queue && handler == TARGET_SIG_ERR) { |
66fb9763 FB |
407 | force_sig(sig); |
408 | } else { | |
9de5e440 FB |
409 | pq = &k->first; |
410 | if (sig < TARGET_SIGRTMIN) { | |
411 | /* if non real time signal, we queue exactly one signal */ | |
412 | if (!k->pending) | |
413 | q = &k->info; | |
414 | else | |
415 | return 0; | |
416 | } else { | |
417 | if (!k->pending) { | |
418 | /* first signal */ | |
419 | q = &k->info; | |
420 | } else { | |
624f7979 | 421 | q = alloc_sigqueue(env); |
9de5e440 FB |
422 | if (!q) |
423 | return -EAGAIN; | |
424 | while (*pq != NULL) | |
425 | pq = &(*pq)->next; | |
426 | } | |
427 | } | |
428 | *pq = q; | |
429 | q->info = *info; | |
430 | q->next = NULL; | |
431 | k->pending = 1; | |
432 | /* signal that a new signal is pending */ | |
624f7979 | 433 | ts->signal_pending = 1; |
9de5e440 FB |
434 | return 1; /* indicates that the signal was queued */ |
435 | } | |
436 | } | |
437 | ||
5fafdf24 | 438 | static void host_signal_handler(int host_signum, siginfo_t *info, |
9de5e440 FB |
439 | void *puc) |
440 | { | |
441 | int sig; | |
442 | target_siginfo_t tinfo; | |
443 | ||
444 | /* the CPU emulator uses some host signals to detect exceptions, | |
eaa449b9 | 445 | we forward to it some signals */ |
ca587a8e | 446 | if ((host_signum == SIGSEGV || host_signum == SIGBUS) |
eaa449b9 | 447 | && info->si_code > 0) { |
b346ff46 | 448 | if (cpu_signal_handler(host_signum, info, puc)) |
9de5e440 FB |
449 | return; |
450 | } | |
451 | ||
452 | /* get target signal number */ | |
453 | sig = host_to_target_signal(host_signum); | |
454 | if (sig < 1 || sig > TARGET_NSIG) | |
455 | return; | |
456 | #if defined(DEBUG_SIGNAL) | |
bc8a22cc | 457 | fprintf(stderr, "qemu: got signal %d\n", sig); |
9de5e440 FB |
458 | #endif |
459 | host_to_target_siginfo_noswap(&tinfo, info); | |
d5975363 | 460 | if (queue_signal(thread_env, sig, &tinfo) == 1) { |
9de5e440 | 461 | /* interrupt the virtual CPU as soon as possible */ |
d5975363 | 462 | cpu_interrupt(thread_env, CPU_INTERRUPT_EXIT); |
66fb9763 FB |
463 | } |
464 | } | |
465 | ||
0da46a6e | 466 | /* do_sigaltstack() returns target values and errnos. */ |
579a97f7 FB |
467 | /* compare linux/kernel/signal.c:do_sigaltstack() */ |
468 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) | |
a04e134a TS |
469 | { |
470 | int ret; | |
471 | struct target_sigaltstack oss; | |
472 | ||
473 | /* XXX: test errors */ | |
579a97f7 | 474 | if(uoss_addr) |
a04e134a TS |
475 | { |
476 | __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp); | |
477 | __put_user(target_sigaltstack_used.ss_size, &oss.ss_size); | |
478 | __put_user(sas_ss_flags(sp), &oss.ss_flags); | |
479 | } | |
480 | ||
579a97f7 | 481 | if(uss_addr) |
a04e134a | 482 | { |
579a97f7 FB |
483 | struct target_sigaltstack *uss; |
484 | struct target_sigaltstack ss; | |
a04e134a | 485 | |
0da46a6e | 486 | ret = -TARGET_EFAULT; |
579a97f7 | 487 | if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1) |
a04e134a TS |
488 | || __get_user(ss.ss_sp, &uss->ss_sp) |
489 | || __get_user(ss.ss_size, &uss->ss_size) | |
490 | || __get_user(ss.ss_flags, &uss->ss_flags)) | |
491 | goto out; | |
579a97f7 | 492 | unlock_user_struct(uss, uss_addr, 0); |
a04e134a | 493 | |
0da46a6e | 494 | ret = -TARGET_EPERM; |
a04e134a TS |
495 | if (on_sig_stack(sp)) |
496 | goto out; | |
497 | ||
0da46a6e | 498 | ret = -TARGET_EINVAL; |
a04e134a TS |
499 | if (ss.ss_flags != TARGET_SS_DISABLE |
500 | && ss.ss_flags != TARGET_SS_ONSTACK | |
501 | && ss.ss_flags != 0) | |
502 | goto out; | |
503 | ||
504 | if (ss.ss_flags == TARGET_SS_DISABLE) { | |
505 | ss.ss_size = 0; | |
506 | ss.ss_sp = 0; | |
507 | } else { | |
0da46a6e | 508 | ret = -TARGET_ENOMEM; |
a04e134a TS |
509 | if (ss.ss_size < MINSIGSTKSZ) |
510 | goto out; | |
511 | } | |
512 | ||
513 | target_sigaltstack_used.ss_sp = ss.ss_sp; | |
514 | target_sigaltstack_used.ss_size = ss.ss_size; | |
515 | } | |
516 | ||
579a97f7 | 517 | if (uoss_addr) { |
0da46a6e | 518 | ret = -TARGET_EFAULT; |
579a97f7 | 519 | if (copy_to_user(uoss_addr, &oss, sizeof(oss))) |
a04e134a | 520 | goto out; |
a04e134a TS |
521 | } |
522 | ||
523 | ret = 0; | |
524 | out: | |
525 | return ret; | |
526 | } | |
527 | ||
0da46a6e | 528 | /* do_sigaction() return host values and errnos */ |
66fb9763 FB |
529 | int do_sigaction(int sig, const struct target_sigaction *act, |
530 | struct target_sigaction *oact) | |
531 | { | |
624f7979 | 532 | struct target_sigaction *k; |
773b93ee FB |
533 | struct sigaction act1; |
534 | int host_sig; | |
0da46a6e | 535 | int ret = 0; |
66fb9763 | 536 | |
2a913eb1 | 537 | if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP) |
66fb9763 FB |
538 | return -EINVAL; |
539 | k = &sigact_table[sig - 1]; | |
773b93ee | 540 | #if defined(DEBUG_SIGNAL) |
5fafdf24 | 541 | fprintf(stderr, "sigaction sig=%d act=0x%08x, oact=0x%08x\n", |
66fb9763 FB |
542 | sig, (int)act, (int)oact); |
543 | #endif | |
544 | if (oact) { | |
624f7979 PB |
545 | oact->_sa_handler = tswapl(k->_sa_handler); |
546 | oact->sa_flags = tswapl(k->sa_flags); | |
388bb21a | 547 | #if !defined(TARGET_MIPS) |
624f7979 | 548 | oact->sa_restorer = tswapl(k->sa_restorer); |
388bb21a | 549 | #endif |
624f7979 | 550 | oact->sa_mask = k->sa_mask; |
66fb9763 FB |
551 | } |
552 | if (act) { | |
624f7979 PB |
553 | /* FIXME: This is not threadsafe. */ |
554 | k->_sa_handler = tswapl(act->_sa_handler); | |
555 | k->sa_flags = tswapl(act->sa_flags); | |
388bb21a | 556 | #if !defined(TARGET_MIPS) |
624f7979 | 557 | k->sa_restorer = tswapl(act->sa_restorer); |
388bb21a | 558 | #endif |
624f7979 | 559 | k->sa_mask = act->sa_mask; |
773b93ee FB |
560 | |
561 | /* we update the host linux signal state */ | |
562 | host_sig = target_to_host_signal(sig); | |
563 | if (host_sig != SIGSEGV && host_sig != SIGBUS) { | |
564 | sigfillset(&act1.sa_mask); | |
565 | act1.sa_flags = SA_SIGINFO; | |
624f7979 | 566 | if (k->sa_flags & TARGET_SA_RESTART) |
773b93ee FB |
567 | act1.sa_flags |= SA_RESTART; |
568 | /* NOTE: it is important to update the host kernel signal | |
569 | ignore state to avoid getting unexpected interrupted | |
570 | syscalls */ | |
624f7979 | 571 | if (k->_sa_handler == TARGET_SIG_IGN) { |
773b93ee | 572 | act1.sa_sigaction = (void *)SIG_IGN; |
624f7979 | 573 | } else if (k->_sa_handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
574 | if (fatal_signal (sig)) |
575 | act1.sa_sigaction = host_signal_handler; | |
576 | else | |
577 | act1.sa_sigaction = (void *)SIG_DFL; | |
773b93ee FB |
578 | } else { |
579 | act1.sa_sigaction = host_signal_handler; | |
580 | } | |
0da46a6e | 581 | ret = sigaction(host_sig, &act1, NULL); |
773b93ee | 582 | } |
66fb9763 | 583 | } |
0da46a6e | 584 | return ret; |
66fb9763 FB |
585 | } |
586 | ||
5fafdf24 | 587 | static inline int copy_siginfo_to_user(target_siginfo_t *tinfo, |
43fff238 FB |
588 | const target_siginfo_t *info) |
589 | { | |
590 | tswap_siginfo(tinfo, info); | |
591 | return 0; | |
592 | } | |
593 | ||
c3b5bc8a TS |
594 | static inline int current_exec_domain_sig(int sig) |
595 | { | |
596 | return /* current->exec_domain && current->exec_domain->signal_invmap | |
597 | && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig; | |
598 | } | |
599 | ||
459a4017 | 600 | #if defined(TARGET_I386) && TARGET_ABI_BITS == 32 |
66fb9763 FB |
601 | |
602 | /* from the Linux kernel */ | |
603 | ||
604 | struct target_fpreg { | |
605 | uint16_t significand[4]; | |
606 | uint16_t exponent; | |
607 | }; | |
608 | ||
609 | struct target_fpxreg { | |
610 | uint16_t significand[4]; | |
611 | uint16_t exponent; | |
612 | uint16_t padding[3]; | |
613 | }; | |
614 | ||
615 | struct target_xmmreg { | |
992f48a0 | 616 | abi_ulong element[4]; |
66fb9763 FB |
617 | }; |
618 | ||
619 | struct target_fpstate { | |
620 | /* Regular FPU environment */ | |
992f48a0 BS |
621 | abi_ulong cw; |
622 | abi_ulong sw; | |
623 | abi_ulong tag; | |
624 | abi_ulong ipoff; | |
625 | abi_ulong cssel; | |
626 | abi_ulong dataoff; | |
627 | abi_ulong datasel; | |
66fb9763 FB |
628 | struct target_fpreg _st[8]; |
629 | uint16_t status; | |
630 | uint16_t magic; /* 0xffff = regular FPU data only */ | |
631 | ||
632 | /* FXSR FPU environment */ | |
992f48a0 BS |
633 | abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
634 | abi_ulong mxcsr; | |
635 | abi_ulong reserved; | |
66fb9763 FB |
636 | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
637 | struct target_xmmreg _xmm[8]; | |
992f48a0 | 638 | abi_ulong padding[56]; |
66fb9763 FB |
639 | }; |
640 | ||
641 | #define X86_FXSR_MAGIC 0x0000 | |
642 | ||
643 | struct target_sigcontext { | |
644 | uint16_t gs, __gsh; | |
645 | uint16_t fs, __fsh; | |
646 | uint16_t es, __esh; | |
647 | uint16_t ds, __dsh; | |
992f48a0 BS |
648 | abi_ulong edi; |
649 | abi_ulong esi; | |
650 | abi_ulong ebp; | |
651 | abi_ulong esp; | |
652 | abi_ulong ebx; | |
653 | abi_ulong edx; | |
654 | abi_ulong ecx; | |
655 | abi_ulong eax; | |
656 | abi_ulong trapno; | |
657 | abi_ulong err; | |
658 | abi_ulong eip; | |
66fb9763 | 659 | uint16_t cs, __csh; |
992f48a0 BS |
660 | abi_ulong eflags; |
661 | abi_ulong esp_at_signal; | |
66fb9763 | 662 | uint16_t ss, __ssh; |
992f48a0 BS |
663 | abi_ulong fpstate; /* pointer */ |
664 | abi_ulong oldmask; | |
665 | abi_ulong cr2; | |
66fb9763 FB |
666 | }; |
667 | ||
66fb9763 | 668 | struct target_ucontext { |
992f48a0 BS |
669 | abi_ulong tuc_flags; |
670 | abi_ulong tuc_link; | |
b8076a74 FB |
671 | target_stack_t tuc_stack; |
672 | struct target_sigcontext tuc_mcontext; | |
673 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
66fb9763 FB |
674 | }; |
675 | ||
676 | struct sigframe | |
677 | { | |
992f48a0 | 678 | abi_ulong pretcode; |
66fb9763 FB |
679 | int sig; |
680 | struct target_sigcontext sc; | |
681 | struct target_fpstate fpstate; | |
992f48a0 | 682 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
66fb9763 FB |
683 | char retcode[8]; |
684 | }; | |
685 | ||
686 | struct rt_sigframe | |
687 | { | |
992f48a0 | 688 | abi_ulong pretcode; |
66fb9763 | 689 | int sig; |
992f48a0 BS |
690 | abi_ulong pinfo; |
691 | abi_ulong puc; | |
66fb9763 FB |
692 | struct target_siginfo info; |
693 | struct target_ucontext uc; | |
694 | struct target_fpstate fpstate; | |
695 | char retcode[8]; | |
696 | }; | |
697 | ||
698 | /* | |
699 | * Set up a signal frame. | |
700 | */ | |
701 | ||
66fb9763 FB |
702 | /* XXX: save x87 state */ |
703 | static int | |
704 | setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate, | |
28be6234 | 705 | CPUX86State *env, abi_ulong mask, abi_ulong fpstate_addr) |
66fb9763 FB |
706 | { |
707 | int err = 0; | |
775b58d8 | 708 | uint16_t magic; |
66fb9763 | 709 | |
579a97f7 | 710 | /* already locked in setup_frame() */ |
a52c757c FB |
711 | err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
712 | err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); | |
713 | err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); | |
714 | err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); | |
66fb9763 FB |
715 | err |= __put_user(env->regs[R_EDI], &sc->edi); |
716 | err |= __put_user(env->regs[R_ESI], &sc->esi); | |
717 | err |= __put_user(env->regs[R_EBP], &sc->ebp); | |
718 | err |= __put_user(env->regs[R_ESP], &sc->esp); | |
719 | err |= __put_user(env->regs[R_EBX], &sc->ebx); | |
720 | err |= __put_user(env->regs[R_EDX], &sc->edx); | |
721 | err |= __put_user(env->regs[R_ECX], &sc->ecx); | |
722 | err |= __put_user(env->regs[R_EAX], &sc->eax); | |
66099dd9 FB |
723 | err |= __put_user(env->exception_index, &sc->trapno); |
724 | err |= __put_user(env->error_code, &sc->err); | |
66fb9763 | 725 | err |= __put_user(env->eip, &sc->eip); |
a52c757c | 726 | err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); |
66fb9763 FB |
727 | err |= __put_user(env->eflags, &sc->eflags); |
728 | err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal); | |
a52c757c | 729 | err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); |
ed2dcdf6 | 730 | |
28be6234 | 731 | cpu_x86_fsave(env, fpstate_addr, 1); |
ed2dcdf6 | 732 | fpstate->status = fpstate->sw; |
775b58d8 FB |
733 | magic = 0xffff; |
734 | err |= __put_user(magic, &fpstate->magic); | |
28be6234 | 735 | err |= __put_user(fpstate_addr, &sc->fpstate); |
ed2dcdf6 | 736 | |
66fb9763 FB |
737 | /* non-iBCS2 extensions.. */ |
738 | err |= __put_user(mask, &sc->oldmask); | |
a52c757c | 739 | err |= __put_user(env->cr[2], &sc->cr2); |
66fb9763 | 740 | return err; |
31e31b8a FB |
741 | } |
742 | ||
66fb9763 FB |
743 | /* |
744 | * Determine which stack to use.. | |
745 | */ | |
31e31b8a | 746 | |
579a97f7 | 747 | static inline abi_ulong |
624f7979 | 748 | get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size) |
31e31b8a | 749 | { |
66fb9763 FB |
750 | unsigned long esp; |
751 | ||
752 | /* Default to using normal stack */ | |
753 | esp = env->regs[R_ESP]; | |
66fb9763 | 754 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 755 | if (ka->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
756 | if (sas_ss_flags(esp) == 0) |
757 | esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
758 | } | |
66fb9763 FB |
759 | |
760 | /* This is the legacy signal stack switching. */ | |
5fafdf24 | 761 | else |
a52c757c | 762 | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
624f7979 PB |
763 | !(ka->sa_flags & TARGET_SA_RESTORER) && |
764 | ka->sa_restorer) { | |
765 | esp = (unsigned long) ka->sa_restorer; | |
a52c757c | 766 | } |
579a97f7 | 767 | return (esp - frame_size) & -8ul; |
66fb9763 FB |
768 | } |
769 | ||
579a97f7 | 770 | /* compare linux/arch/i386/kernel/signal.c:setup_frame() */ |
624f7979 | 771 | static void setup_frame(int sig, struct target_sigaction *ka, |
66fb9763 FB |
772 | target_sigset_t *set, CPUX86State *env) |
773 | { | |
579a97f7 | 774 | abi_ulong frame_addr; |
66fb9763 | 775 | struct sigframe *frame; |
9231944d | 776 | int i, err = 0; |
66fb9763 | 777 | |
579a97f7 | 778 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 779 | |
579a97f7 | 780 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 781 | goto give_sigsegv; |
579a97f7 | 782 | |
c3b5bc8a | 783 | err |= __put_user(current_exec_domain_sig(sig), |
66fb9763 FB |
784 | &frame->sig); |
785 | if (err) | |
786 | goto give_sigsegv; | |
787 | ||
28be6234 FB |
788 | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0], |
789 | frame_addr + offsetof(struct sigframe, fpstate)); | |
66fb9763 FB |
790 | if (err) |
791 | goto give_sigsegv; | |
792 | ||
9231944d FB |
793 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
794 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
795 | goto give_sigsegv; | |
796 | } | |
66fb9763 FB |
797 | |
798 | /* Set up to return from userspace. If provided, use a stub | |
799 | already in userspace. */ | |
624f7979 PB |
800 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
801 | err |= __put_user(ka->sa_restorer, &frame->pretcode); | |
66fb9763 | 802 | } else { |
775b58d8 | 803 | uint16_t val16; |
28be6234 FB |
804 | abi_ulong retcode_addr; |
805 | retcode_addr = frame_addr + offsetof(struct sigframe, retcode); | |
806 | err |= __put_user(retcode_addr, &frame->pretcode); | |
66fb9763 | 807 | /* This is popl %eax ; movl $,%eax ; int $0x80 */ |
775b58d8 FB |
808 | val16 = 0xb858; |
809 | err |= __put_user(val16, (uint16_t *)(frame->retcode+0)); | |
66fb9763 | 810 | err |= __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); |
775b58d8 FB |
811 | val16 = 0x80cd; |
812 | err |= __put_user(val16, (uint16_t *)(frame->retcode+6)); | |
66fb9763 FB |
813 | } |
814 | ||
815 | if (err) | |
816 | goto give_sigsegv; | |
817 | ||
818 | /* Set up registers for signal handler */ | |
28be6234 | 819 | env->regs[R_ESP] = frame_addr; |
624f7979 | 820 | env->eip = ka->_sa_handler; |
66fb9763 FB |
821 | |
822 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
823 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
824 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
825 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
826 | env->eflags &= ~TF_MASK; | |
827 | ||
579a97f7 FB |
828 | unlock_user_struct(frame, frame_addr, 1); |
829 | ||
66fb9763 FB |
830 | return; |
831 | ||
832 | give_sigsegv: | |
579a97f7 | 833 | unlock_user_struct(frame, frame_addr, 1); |
66fb9763 | 834 | if (sig == TARGET_SIGSEGV) |
624f7979 | 835 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
836 | force_sig(TARGET_SIGSEGV /* , current */); |
837 | } | |
838 | ||
579a97f7 | 839 | /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 840 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
9de5e440 | 841 | target_siginfo_t *info, |
66fb9763 FB |
842 | target_sigset_t *set, CPUX86State *env) |
843 | { | |
28be6234 | 844 | abi_ulong frame_addr, addr; |
66fb9763 | 845 | struct rt_sigframe *frame; |
9231944d | 846 | int i, err = 0; |
66fb9763 | 847 | |
579a97f7 | 848 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 849 | |
579a97f7 | 850 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 851 | goto give_sigsegv; |
66fb9763 | 852 | |
c3b5bc8a | 853 | err |= __put_user(current_exec_domain_sig(sig), |
66fb9763 | 854 | &frame->sig); |
28be6234 FB |
855 | addr = frame_addr + offsetof(struct rt_sigframe, info); |
856 | err |= __put_user(addr, &frame->pinfo); | |
857 | addr = frame_addr + offsetof(struct rt_sigframe, uc); | |
858 | err |= __put_user(addr, &frame->puc); | |
66fb9763 FB |
859 | err |= copy_siginfo_to_user(&frame->info, info); |
860 | if (err) | |
861 | goto give_sigsegv; | |
31e31b8a | 862 | |
66fb9763 | 863 | /* Create the ucontext. */ |
b8076a74 FB |
864 | err |= __put_user(0, &frame->uc.tuc_flags); |
865 | err |= __put_user(0, &frame->uc.tuc_link); | |
a04e134a | 866 | err |= __put_user(target_sigaltstack_used.ss_sp, |
b8076a74 | 867 | &frame->uc.tuc_stack.ss_sp); |
a04e134a | 868 | err |= __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
b8076a74 | 869 | &frame->uc.tuc_stack.ss_flags); |
a04e134a | 870 | err |= __put_user(target_sigaltstack_used.ss_size, |
b8076a74 FB |
871 | &frame->uc.tuc_stack.ss_size); |
872 | err |= setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, | |
28be6234 FB |
873 | env, set->sig[0], |
874 | frame_addr + offsetof(struct rt_sigframe, fpstate)); | |
9231944d | 875 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
b8076a74 | 876 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
9231944d FB |
877 | goto give_sigsegv; |
878 | } | |
31e31b8a | 879 | |
66fb9763 FB |
880 | /* Set up to return from userspace. If provided, use a stub |
881 | already in userspace. */ | |
624f7979 PB |
882 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
883 | err |= __put_user(ka->sa_restorer, &frame->pretcode); | |
66fb9763 | 884 | } else { |
775b58d8 | 885 | uint16_t val16; |
28be6234 FB |
886 | addr = frame_addr + offsetof(struct rt_sigframe, retcode); |
887 | err |= __put_user(addr, &frame->pretcode); | |
66fb9763 | 888 | /* This is movl $,%eax ; int $0x80 */ |
775b58d8 | 889 | err |= __put_user(0xb8, (char *)(frame->retcode+0)); |
66fb9763 | 890 | err |= __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); |
775b58d8 FB |
891 | val16 = 0x80cd; |
892 | err |= __put_user(val16, (uint16_t *)(frame->retcode+5)); | |
66fb9763 FB |
893 | } |
894 | ||
895 | if (err) | |
896 | goto give_sigsegv; | |
897 | ||
898 | /* Set up registers for signal handler */ | |
28be6234 | 899 | env->regs[R_ESP] = frame_addr; |
624f7979 | 900 | env->eip = ka->_sa_handler; |
66fb9763 FB |
901 | |
902 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
903 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
904 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
905 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
906 | env->eflags &= ~TF_MASK; | |
907 | ||
579a97f7 FB |
908 | unlock_user_struct(frame, frame_addr, 1); |
909 | ||
66fb9763 FB |
910 | return; |
911 | ||
912 | give_sigsegv: | |
579a97f7 | 913 | unlock_user_struct(frame, frame_addr, 1); |
66fb9763 | 914 | if (sig == TARGET_SIGSEGV) |
624f7979 | 915 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
916 | force_sig(TARGET_SIGSEGV /* , current */); |
917 | } | |
918 | ||
919 | static int | |
920 | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) | |
921 | { | |
922 | unsigned int err = 0; | |
28be6234 FB |
923 | abi_ulong fpstate_addr; |
924 | unsigned int tmpflags; | |
925 | ||
926 | cpu_x86_load_seg(env, R_GS, tswap16(sc->gs)); | |
927 | cpu_x86_load_seg(env, R_FS, tswap16(sc->fs)); | |
928 | cpu_x86_load_seg(env, R_ES, tswap16(sc->es)); | |
929 | cpu_x86_load_seg(env, R_DS, tswap16(sc->ds)); | |
930 | ||
931 | env->regs[R_EDI] = tswapl(sc->edi); | |
932 | env->regs[R_ESI] = tswapl(sc->esi); | |
933 | env->regs[R_EBP] = tswapl(sc->ebp); | |
934 | env->regs[R_ESP] = tswapl(sc->esp); | |
935 | env->regs[R_EBX] = tswapl(sc->ebx); | |
936 | env->regs[R_EDX] = tswapl(sc->edx); | |
937 | env->regs[R_ECX] = tswapl(sc->ecx); | |
938 | env->eip = tswapl(sc->eip); | |
66fb9763 FB |
939 | |
940 | cpu_x86_load_seg(env, R_CS, lduw(&sc->cs) | 3); | |
941 | cpu_x86_load_seg(env, R_SS, lduw(&sc->ss) | 3); | |
5fafdf24 | 942 | |
28be6234 FB |
943 | tmpflags = tswapl(sc->eflags); |
944 | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); | |
945 | // regs->orig_eax = -1; /* disable syscall checks */ | |
66fb9763 | 946 | |
28be6234 FB |
947 | fpstate_addr = tswapl(sc->fpstate); |
948 | if (fpstate_addr != 0) { | |
949 | if (!access_ok(VERIFY_READ, fpstate_addr, | |
950 | sizeof(struct target_fpstate))) | |
951 | goto badframe; | |
952 | cpu_x86_frstor(env, fpstate_addr, 1); | |
66fb9763 | 953 | } |
ed2dcdf6 | 954 | |
28be6234 | 955 | *peax = tswapl(sc->eax); |
66fb9763 | 956 | return err; |
66fb9763 FB |
957 | badframe: |
958 | return 1; | |
66fb9763 FB |
959 | } |
960 | ||
961 | long do_sigreturn(CPUX86State *env) | |
962 | { | |
579a97f7 FB |
963 | struct sigframe *frame; |
964 | abi_ulong frame_addr = env->regs[R_ESP] - 8; | |
66fb9763 FB |
965 | target_sigset_t target_set; |
966 | sigset_t set; | |
967 | int eax, i; | |
968 | ||
447db213 FB |
969 | #if defined(DEBUG_SIGNAL) |
970 | fprintf(stderr, "do_sigreturn\n"); | |
971 | #endif | |
579a97f7 FB |
972 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
973 | goto badframe; | |
66fb9763 | 974 | /* set blocked signals */ |
9231944d FB |
975 | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
976 | goto badframe; | |
977 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
978 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
979 | goto badframe; | |
980 | } | |
66fb9763 | 981 | |
9231944d | 982 | target_to_host_sigset_internal(&set, &target_set); |
66fb9763 | 983 | sigprocmask(SIG_SETMASK, &set, NULL); |
3b46e624 | 984 | |
66fb9763 FB |
985 | /* restore registers */ |
986 | if (restore_sigcontext(env, &frame->sc, &eax)) | |
987 | goto badframe; | |
579a97f7 | 988 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
989 | return eax; |
990 | ||
991 | badframe: | |
579a97f7 | 992 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
993 | force_sig(TARGET_SIGSEGV); |
994 | return 0; | |
995 | } | |
996 | ||
997 | long do_rt_sigreturn(CPUX86State *env) | |
998 | { | |
28be6234 FB |
999 | abi_ulong frame_addr; |
1000 | struct rt_sigframe *frame; | |
66fb9763 | 1001 | sigset_t set; |
66fb9763 FB |
1002 | int eax; |
1003 | ||
28be6234 FB |
1004 | frame_addr = env->regs[R_ESP] - 4; |
1005 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1006 | goto badframe; | |
b8076a74 | 1007 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
66fb9763 | 1008 | sigprocmask(SIG_SETMASK, &set, NULL); |
5fafdf24 | 1009 | |
b8076a74 | 1010 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax)) |
66fb9763 FB |
1011 | goto badframe; |
1012 | ||
28be6234 FB |
1013 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, |
1014 | get_sp_from_cpustate(env)) == -EFAULT) | |
66fb9763 | 1015 | goto badframe; |
a04e134a | 1016 | |
28be6234 | 1017 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1018 | return eax; |
1019 | ||
1020 | badframe: | |
28be6234 FB |
1021 | unlock_user_struct(frame, frame_addr, 0); |
1022 | force_sig(TARGET_SIGSEGV); | |
66fb9763 FB |
1023 | return 0; |
1024 | } | |
1025 | ||
43fff238 FB |
1026 | #elif defined(TARGET_ARM) |
1027 | ||
1028 | struct target_sigcontext { | |
992f48a0 BS |
1029 | abi_ulong trap_no; |
1030 | abi_ulong error_code; | |
1031 | abi_ulong oldmask; | |
1032 | abi_ulong arm_r0; | |
1033 | abi_ulong arm_r1; | |
1034 | abi_ulong arm_r2; | |
1035 | abi_ulong arm_r3; | |
1036 | abi_ulong arm_r4; | |
1037 | abi_ulong arm_r5; | |
1038 | abi_ulong arm_r6; | |
1039 | abi_ulong arm_r7; | |
1040 | abi_ulong arm_r8; | |
1041 | abi_ulong arm_r9; | |
1042 | abi_ulong arm_r10; | |
1043 | abi_ulong arm_fp; | |
1044 | abi_ulong arm_ip; | |
1045 | abi_ulong arm_sp; | |
1046 | abi_ulong arm_lr; | |
1047 | abi_ulong arm_pc; | |
1048 | abi_ulong arm_cpsr; | |
1049 | abi_ulong fault_address; | |
43fff238 FB |
1050 | }; |
1051 | ||
a745ec6d PB |
1052 | struct target_ucontext_v1 { |
1053 | abi_ulong tuc_flags; | |
1054 | abi_ulong tuc_link; | |
1055 | target_stack_t tuc_stack; | |
1056 | struct target_sigcontext tuc_mcontext; | |
1057 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
1058 | }; | |
1059 | ||
1060 | struct target_ucontext_v2 { | |
992f48a0 BS |
1061 | abi_ulong tuc_flags; |
1062 | abi_ulong tuc_link; | |
b8076a74 FB |
1063 | target_stack_t tuc_stack; |
1064 | struct target_sigcontext tuc_mcontext; | |
1065 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
a745ec6d PB |
1066 | char __unused[128 - sizeof(sigset_t)]; |
1067 | abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); | |
43fff238 FB |
1068 | }; |
1069 | ||
a8c33204 | 1070 | struct sigframe_v1 |
43fff238 FB |
1071 | { |
1072 | struct target_sigcontext sc; | |
992f48a0 BS |
1073 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
1074 | abi_ulong retcode; | |
43fff238 FB |
1075 | }; |
1076 | ||
a8c33204 PB |
1077 | struct sigframe_v2 |
1078 | { | |
1079 | struct target_ucontext_v2 uc; | |
1080 | abi_ulong retcode; | |
1081 | }; | |
1082 | ||
a745ec6d | 1083 | struct rt_sigframe_v1 |
43fff238 | 1084 | { |
f8b0aa25 FB |
1085 | abi_ulong pinfo; |
1086 | abi_ulong puc; | |
43fff238 | 1087 | struct target_siginfo info; |
a745ec6d PB |
1088 | struct target_ucontext_v1 uc; |
1089 | abi_ulong retcode; | |
1090 | }; | |
1091 | ||
1092 | struct rt_sigframe_v2 | |
1093 | { | |
1094 | struct target_siginfo info; | |
1095 | struct target_ucontext_v2 uc; | |
992f48a0 | 1096 | abi_ulong retcode; |
43fff238 FB |
1097 | }; |
1098 | ||
1099 | #define TARGET_CONFIG_CPU_32 1 | |
1100 | ||
1101 | /* | |
1102 | * For ARM syscalls, we encode the syscall number into the instruction. | |
1103 | */ | |
1104 | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) | |
1105 | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) | |
1106 | ||
1107 | /* | |
1108 | * For Thumb syscalls, we pass the syscall number via r7. We therefore | |
1109 | * need two 16-bit instructions. | |
1110 | */ | |
1111 | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) | |
1112 | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) | |
1113 | ||
992f48a0 | 1114 | static const abi_ulong retcodes[4] = { |
43fff238 FB |
1115 | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
1116 | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN | |
1117 | }; | |
1118 | ||
1119 | ||
43fff238 FB |
1120 | #define __get_user_error(x,p,e) __get_user(x, p) |
1121 | ||
1122 | static inline int valid_user_regs(CPUState *regs) | |
1123 | { | |
1124 | return 1; | |
1125 | } | |
1126 | ||
a8c33204 | 1127 | static void |
43fff238 | 1128 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
f8b0aa25 | 1129 | CPUState *env, abi_ulong mask) |
43fff238 | 1130 | { |
a8c33204 PB |
1131 | __put_user(env->regs[0], &sc->arm_r0); |
1132 | __put_user(env->regs[1], &sc->arm_r1); | |
1133 | __put_user(env->regs[2], &sc->arm_r2); | |
1134 | __put_user(env->regs[3], &sc->arm_r3); | |
1135 | __put_user(env->regs[4], &sc->arm_r4); | |
1136 | __put_user(env->regs[5], &sc->arm_r5); | |
1137 | __put_user(env->regs[6], &sc->arm_r6); | |
1138 | __put_user(env->regs[7], &sc->arm_r7); | |
1139 | __put_user(env->regs[8], &sc->arm_r8); | |
1140 | __put_user(env->regs[9], &sc->arm_r9); | |
1141 | __put_user(env->regs[10], &sc->arm_r10); | |
1142 | __put_user(env->regs[11], &sc->arm_fp); | |
1143 | __put_user(env->regs[12], &sc->arm_ip); | |
1144 | __put_user(env->regs[13], &sc->arm_sp); | |
1145 | __put_user(env->regs[14], &sc->arm_lr); | |
1146 | __put_user(env->regs[15], &sc->arm_pc); | |
43fff238 | 1147 | #ifdef TARGET_CONFIG_CPU_32 |
a8c33204 | 1148 | __put_user(cpsr_read(env), &sc->arm_cpsr); |
43fff238 FB |
1149 | #endif |
1150 | ||
a8c33204 PB |
1151 | __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); |
1152 | __put_user(/* current->thread.error_code */ 0, &sc->error_code); | |
1153 | __put_user(/* current->thread.address */ 0, &sc->fault_address); | |
1154 | __put_user(mask, &sc->oldmask); | |
43fff238 FB |
1155 | } |
1156 | ||
579a97f7 | 1157 | static inline abi_ulong |
624f7979 | 1158 | get_sigframe(struct target_sigaction *ka, CPUState *regs, int framesize) |
43fff238 FB |
1159 | { |
1160 | unsigned long sp = regs->regs[13]; | |
1161 | ||
43fff238 FB |
1162 | /* |
1163 | * This is the X/Open sanctioned signal stack switching. | |
1164 | */ | |
624f7979 | 1165 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) |
a04e134a | 1166 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
43fff238 FB |
1167 | /* |
1168 | * ATPCS B01 mandates 8-byte alignment | |
1169 | */ | |
579a97f7 | 1170 | return (sp - framesize) & ~7; |
43fff238 FB |
1171 | } |
1172 | ||
1173 | static int | |
624f7979 | 1174 | setup_return(CPUState *env, struct target_sigaction *ka, |
f8b0aa25 | 1175 | abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr) |
43fff238 | 1176 | { |
624f7979 | 1177 | abi_ulong handler = ka->_sa_handler; |
992f48a0 | 1178 | abi_ulong retcode; |
75b680e5 | 1179 | int thumb = handler & 1; |
43fff238 | 1180 | |
624f7979 PB |
1181 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1182 | retcode = ka->sa_restorer; | |
43fff238 FB |
1183 | } else { |
1184 | unsigned int idx = thumb; | |
1185 | ||
624f7979 | 1186 | if (ka->sa_flags & TARGET_SA_SIGINFO) |
43fff238 FB |
1187 | idx += 2; |
1188 | ||
1189 | if (__put_user(retcodes[idx], rc)) | |
1190 | return 1; | |
1191 | #if 0 | |
992f48a0 BS |
1192 | flush_icache_range((abi_ulong)rc, |
1193 | (abi_ulong)(rc + 1)); | |
43fff238 | 1194 | #endif |
f8b0aa25 | 1195 | retcode = rc_addr + thumb; |
43fff238 FB |
1196 | } |
1197 | ||
1198 | env->regs[0] = usig; | |
f8b0aa25 | 1199 | env->regs[13] = frame_addr; |
43fff238 FB |
1200 | env->regs[14] = retcode; |
1201 | env->regs[15] = handler & (thumb ? ~1 : ~3); | |
75b680e5 | 1202 | env->thumb = thumb; |
43fff238 | 1203 | |
b5ff1b31 | 1204 | #if 0 |
43fff238 FB |
1205 | #ifdef TARGET_CONFIG_CPU_32 |
1206 | env->cpsr = cpsr; | |
b5ff1b31 | 1207 | #endif |
43fff238 FB |
1208 | #endif |
1209 | ||
1210 | return 0; | |
1211 | } | |
1212 | ||
a8c33204 PB |
1213 | static void setup_sigframe_v2(struct target_ucontext_v2 *uc, |
1214 | target_sigset_t *set, CPUState *env) | |
1215 | { | |
1216 | struct target_sigaltstack stack; | |
1217 | int i; | |
1218 | ||
1219 | /* Clear all the bits of the ucontext we don't use. */ | |
1220 | memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); | |
1221 | ||
1222 | memset(&stack, 0, sizeof(stack)); | |
1223 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1224 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1225 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
1226 | memcpy(&uc->tuc_stack, &stack, sizeof(stack)); | |
1227 | ||
1228 | setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]); | |
1229 | /* FIXME: Save coprocessor signal frame. */ | |
1230 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
1231 | __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); | |
1232 | } | |
1233 | } | |
1234 | ||
579a97f7 | 1235 | /* compare linux/arch/arm/kernel/signal.c:setup_frame() */ |
624f7979 | 1236 | static void setup_frame_v1(int usig, struct target_sigaction *ka, |
a8c33204 | 1237 | target_sigset_t *set, CPUState *regs) |
43fff238 | 1238 | { |
a8c33204 | 1239 | struct sigframe_v1 *frame; |
579a97f7 | 1240 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
a8c33204 | 1241 | int i; |
43fff238 | 1242 | |
579a97f7 FB |
1243 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1244 | return; | |
1245 | ||
a8c33204 | 1246 | setup_sigcontext(&frame->sc, regs, set->sig[0]); |
43fff238 | 1247 | |
9231944d FB |
1248 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1249 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
579a97f7 | 1250 | goto end; |
43fff238 FB |
1251 | } |
1252 | ||
a8c33204 PB |
1253 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, |
1254 | frame_addr + offsetof(struct sigframe_v1, retcode)); | |
579a97f7 FB |
1255 | |
1256 | end: | |
1257 | unlock_user_struct(frame, frame_addr, 1); | |
a8c33204 PB |
1258 | } |
1259 | ||
624f7979 | 1260 | static void setup_frame_v2(int usig, struct target_sigaction *ka, |
a8c33204 PB |
1261 | target_sigset_t *set, CPUState *regs) |
1262 | { | |
1263 | struct sigframe_v2 *frame; | |
1264 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); | |
1265 | ||
1266 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1267 | return; | |
1268 | ||
1269 | setup_sigframe_v2(&frame->uc, set, regs); | |
1270 | ||
1271 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, | |
1272 | frame_addr + offsetof(struct sigframe_v2, retcode)); | |
1273 | ||
1274 | unlock_user_struct(frame, frame_addr, 1); | |
1275 | } | |
1276 | ||
624f7979 | 1277 | static void setup_frame(int usig, struct target_sigaction *ka, |
a8c33204 PB |
1278 | target_sigset_t *set, CPUState *regs) |
1279 | { | |
1280 | if (get_osversion() >= 0x020612) { | |
1281 | setup_frame_v2(usig, ka, set, regs); | |
1282 | } else { | |
1283 | setup_frame_v1(usig, ka, set, regs); | |
1284 | } | |
43fff238 FB |
1285 | } |
1286 | ||
579a97f7 | 1287 | /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 1288 | static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, |
a745ec6d PB |
1289 | target_siginfo_t *info, |
1290 | target_sigset_t *set, CPUState *env) | |
43fff238 | 1291 | { |
a745ec6d | 1292 | struct rt_sigframe_v1 *frame; |
579a97f7 | 1293 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
a04e134a | 1294 | struct target_sigaltstack stack; |
a8c33204 | 1295 | int i; |
f8b0aa25 | 1296 | abi_ulong info_addr, uc_addr; |
43fff238 | 1297 | |
579a97f7 | 1298 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
edf779ff FB |
1299 | return /* 1 */; |
1300 | ||
a745ec6d | 1301 | info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info); |
a8c33204 | 1302 | __put_user(info_addr, &frame->pinfo); |
a745ec6d | 1303 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc); |
a8c33204 PB |
1304 | __put_user(uc_addr, &frame->puc); |
1305 | copy_siginfo_to_user(&frame->info, info); | |
43fff238 FB |
1306 | |
1307 | /* Clear all the bits of the ucontext we don't use. */ | |
a745ec6d | 1308 | memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext)); |
43fff238 | 1309 | |
a04e134a TS |
1310 | memset(&stack, 0, sizeof(stack)); |
1311 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1312 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1313 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
775b58d8 | 1314 | memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack)); |
a04e134a | 1315 | |
a8c33204 | 1316 | setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]); |
9231944d | 1317 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
b8076a74 | 1318 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
579a97f7 | 1319 | goto end; |
9231944d | 1320 | } |
43fff238 | 1321 | |
a8c33204 PB |
1322 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1323 | frame_addr + offsetof(struct rt_sigframe_v1, retcode)); | |
a745ec6d | 1324 | |
a8c33204 PB |
1325 | env->regs[1] = info_addr; |
1326 | env->regs[2] = uc_addr; | |
a745ec6d PB |
1327 | |
1328 | end: | |
1329 | unlock_user_struct(frame, frame_addr, 1); | |
a745ec6d PB |
1330 | } |
1331 | ||
624f7979 | 1332 | static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, |
a745ec6d PB |
1333 | target_siginfo_t *info, |
1334 | target_sigset_t *set, CPUState *env) | |
1335 | { | |
1336 | struct rt_sigframe_v2 *frame; | |
1337 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
a745ec6d PB |
1338 | abi_ulong info_addr, uc_addr; |
1339 | ||
1340 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1341 | return /* 1 */; | |
1342 | ||
1343 | info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info); | |
1344 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc); | |
a8c33204 | 1345 | copy_siginfo_to_user(&frame->info, info); |
a745ec6d | 1346 | |
a8c33204 | 1347 | setup_sigframe_v2(&frame->uc, set, env); |
a745ec6d | 1348 | |
a8c33204 PB |
1349 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1350 | frame_addr + offsetof(struct rt_sigframe_v2, retcode)); | |
a745ec6d | 1351 | |
a8c33204 PB |
1352 | env->regs[1] = info_addr; |
1353 | env->regs[2] = uc_addr; | |
43fff238 | 1354 | |
579a97f7 | 1355 | unlock_user_struct(frame, frame_addr, 1); |
43fff238 FB |
1356 | } |
1357 | ||
624f7979 | 1358 | static void setup_rt_frame(int usig, struct target_sigaction *ka, |
a745ec6d PB |
1359 | target_siginfo_t *info, |
1360 | target_sigset_t *set, CPUState *env) | |
1361 | { | |
1362 | if (get_osversion() >= 0x020612) { | |
1363 | setup_rt_frame_v2(usig, ka, info, set, env); | |
1364 | } else { | |
1365 | setup_rt_frame_v1(usig, ka, info, set, env); | |
1366 | } | |
1367 | } | |
1368 | ||
43fff238 FB |
1369 | static int |
1370 | restore_sigcontext(CPUState *env, struct target_sigcontext *sc) | |
1371 | { | |
1372 | int err = 0; | |
b5ff1b31 | 1373 | uint32_t cpsr; |
43fff238 FB |
1374 | |
1375 | __get_user_error(env->regs[0], &sc->arm_r0, err); | |
1376 | __get_user_error(env->regs[1], &sc->arm_r1, err); | |
1377 | __get_user_error(env->regs[2], &sc->arm_r2, err); | |
1378 | __get_user_error(env->regs[3], &sc->arm_r3, err); | |
1379 | __get_user_error(env->regs[4], &sc->arm_r4, err); | |
1380 | __get_user_error(env->regs[5], &sc->arm_r5, err); | |
1381 | __get_user_error(env->regs[6], &sc->arm_r6, err); | |
1382 | __get_user_error(env->regs[7], &sc->arm_r7, err); | |
1383 | __get_user_error(env->regs[8], &sc->arm_r8, err); | |
1384 | __get_user_error(env->regs[9], &sc->arm_r9, err); | |
1385 | __get_user_error(env->regs[10], &sc->arm_r10, err); | |
1386 | __get_user_error(env->regs[11], &sc->arm_fp, err); | |
1387 | __get_user_error(env->regs[12], &sc->arm_ip, err); | |
1388 | __get_user_error(env->regs[13], &sc->arm_sp, err); | |
1389 | __get_user_error(env->regs[14], &sc->arm_lr, err); | |
1390 | __get_user_error(env->regs[15], &sc->arm_pc, err); | |
1391 | #ifdef TARGET_CONFIG_CPU_32 | |
b5ff1b31 | 1392 | __get_user_error(cpsr, &sc->arm_cpsr, err); |
75b680e5 | 1393 | cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC); |
43fff238 FB |
1394 | #endif |
1395 | ||
1396 | err |= !valid_user_regs(env); | |
1397 | ||
1398 | return err; | |
1399 | } | |
1400 | ||
a8c33204 | 1401 | long do_sigreturn_v1(CPUState *env) |
43fff238 | 1402 | { |
f8b0aa25 | 1403 | abi_ulong frame_addr; |
a8c33204 | 1404 | struct sigframe_v1 *frame; |
43fff238 FB |
1405 | target_sigset_t set; |
1406 | sigset_t host_set; | |
9231944d | 1407 | int i; |
43fff238 FB |
1408 | |
1409 | /* | |
1410 | * Since we stacked the signal on a 64-bit boundary, | |
1411 | * then 'sp' should be word aligned here. If it's | |
1412 | * not, then the user is trying to mess with us. | |
1413 | */ | |
1414 | if (env->regs[13] & 7) | |
1415 | goto badframe; | |
1416 | ||
f8b0aa25 FB |
1417 | frame_addr = env->regs[13]; |
1418 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1419 | goto badframe; | |
43fff238 | 1420 | |
9231944d FB |
1421 | if (__get_user(set.sig[0], &frame->sc.oldmask)) |
1422 | goto badframe; | |
1423 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
1424 | if (__get_user(set.sig[i], &frame->extramask[i - 1])) | |
1425 | goto badframe; | |
1426 | } | |
43fff238 | 1427 | |
9231944d | 1428 | target_to_host_sigset_internal(&host_set, &set); |
43fff238 FB |
1429 | sigprocmask(SIG_SETMASK, &host_set, NULL); |
1430 | ||
1431 | if (restore_sigcontext(env, &frame->sc)) | |
1432 | goto badframe; | |
1433 | ||
1434 | #if 0 | |
1435 | /* Send SIGTRAP if we're single-stepping */ | |
1436 | if (ptrace_cancel_bpt(current)) | |
1437 | send_sig(SIGTRAP, current, 1); | |
1438 | #endif | |
f8b0aa25 FB |
1439 | unlock_user_struct(frame, frame_addr, 0); |
1440 | return env->regs[0]; | |
43fff238 FB |
1441 | |
1442 | badframe: | |
f8b0aa25 | 1443 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
1444 | force_sig(SIGSEGV /* , current */); |
1445 | return 0; | |
1446 | } | |
1447 | ||
a8c33204 PB |
1448 | static int do_sigframe_return_v2(CPUState *env, target_ulong frame_addr, |
1449 | struct target_ucontext_v2 *uc) | |
1450 | { | |
1451 | sigset_t host_set; | |
1452 | ||
1453 | target_to_host_sigset(&host_set, &uc->tuc_sigmask); | |
1454 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
1455 | ||
1456 | if (restore_sigcontext(env, &uc->tuc_mcontext)) | |
1457 | return 1; | |
1458 | ||
1459 | if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) | |
1460 | return 1; | |
1461 | ||
1462 | #if 0 | |
1463 | /* Send SIGTRAP if we're single-stepping */ | |
1464 | if (ptrace_cancel_bpt(current)) | |
1465 | send_sig(SIGTRAP, current, 1); | |
1466 | #endif | |
1467 | ||
1468 | return 0; | |
1469 | } | |
1470 | ||
1471 | long do_sigreturn_v2(CPUState *env) | |
1472 | { | |
1473 | abi_ulong frame_addr; | |
1474 | struct sigframe_v2 *frame; | |
1475 | ||
1476 | /* | |
1477 | * Since we stacked the signal on a 64-bit boundary, | |
1478 | * then 'sp' should be word aligned here. If it's | |
1479 | * not, then the user is trying to mess with us. | |
1480 | */ | |
1481 | if (env->regs[13] & 7) | |
1482 | goto badframe; | |
1483 | ||
1484 | frame_addr = env->regs[13]; | |
1485 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1486 | goto badframe; | |
1487 | ||
1488 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) | |
1489 | goto badframe; | |
1490 | ||
1491 | unlock_user_struct(frame, frame_addr, 0); | |
1492 | return env->regs[0]; | |
1493 | ||
1494 | badframe: | |
1495 | unlock_user_struct(frame, frame_addr, 0); | |
1496 | force_sig(SIGSEGV /* , current */); | |
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | long do_sigreturn(CPUState *env) | |
1501 | { | |
1502 | if (get_osversion() >= 0x020612) { | |
1503 | return do_sigreturn_v2(env); | |
1504 | } else { | |
1505 | return do_sigreturn_v1(env); | |
1506 | } | |
1507 | } | |
1508 | ||
a745ec6d | 1509 | long do_rt_sigreturn_v1(CPUState *env) |
43fff238 | 1510 | { |
f8b0aa25 | 1511 | abi_ulong frame_addr; |
a745ec6d PB |
1512 | struct rt_sigframe_v1 *frame; |
1513 | sigset_t host_set; | |
1514 | ||
1515 | /* | |
1516 | * Since we stacked the signal on a 64-bit boundary, | |
1517 | * then 'sp' should be word aligned here. If it's | |
1518 | * not, then the user is trying to mess with us. | |
1519 | */ | |
1520 | if (env->regs[13] & 7) | |
1521 | goto badframe; | |
1522 | ||
1523 | frame_addr = env->regs[13]; | |
1524 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1525 | goto badframe; | |
1526 | ||
1527 | target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); | |
1528 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
1529 | ||
1530 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) | |
1531 | goto badframe; | |
1532 | ||
1533 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) | |
1534 | goto badframe; | |
1535 | ||
1536 | #if 0 | |
1537 | /* Send SIGTRAP if we're single-stepping */ | |
1538 | if (ptrace_cancel_bpt(current)) | |
1539 | send_sig(SIGTRAP, current, 1); | |
1540 | #endif | |
1541 | unlock_user_struct(frame, frame_addr, 0); | |
1542 | return env->regs[0]; | |
1543 | ||
1544 | badframe: | |
1545 | unlock_user_struct(frame, frame_addr, 0); | |
1546 | force_sig(SIGSEGV /* , current */); | |
1547 | return 0; | |
1548 | } | |
1549 | ||
1550 | long do_rt_sigreturn_v2(CPUState *env) | |
1551 | { | |
1552 | abi_ulong frame_addr; | |
1553 | struct rt_sigframe_v2 *frame; | |
43fff238 FB |
1554 | |
1555 | /* | |
1556 | * Since we stacked the signal on a 64-bit boundary, | |
1557 | * then 'sp' should be word aligned here. If it's | |
1558 | * not, then the user is trying to mess with us. | |
1559 | */ | |
1560 | if (env->regs[13] & 7) | |
1561 | goto badframe; | |
1562 | ||
f8b0aa25 FB |
1563 | frame_addr = env->regs[13]; |
1564 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1565 | goto badframe; | |
43fff238 | 1566 | |
a8c33204 PB |
1567 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) |
1568 | goto badframe; | |
a04e134a | 1569 | |
f8b0aa25 | 1570 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
1571 | return env->regs[0]; |
1572 | ||
1573 | badframe: | |
f8b0aa25 | 1574 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
1575 | force_sig(SIGSEGV /* , current */); |
1576 | return 0; | |
1577 | } | |
1578 | ||
a745ec6d PB |
1579 | long do_rt_sigreturn(CPUState *env) |
1580 | { | |
1581 | if (get_osversion() >= 0x020612) { | |
1582 | return do_rt_sigreturn_v2(env); | |
1583 | } else { | |
1584 | return do_rt_sigreturn_v1(env); | |
1585 | } | |
1586 | } | |
1587 | ||
6d5e216d | 1588 | #elif defined(TARGET_SPARC) |
80a9d035 | 1589 | |
6d5e216d FB |
1590 | #define __SUNOS_MAXWIN 31 |
1591 | ||
1592 | /* This is what SunOS does, so shall I. */ | |
1593 | struct target_sigcontext { | |
992f48a0 | 1594 | abi_ulong sigc_onstack; /* state to restore */ |
6d5e216d | 1595 | |
992f48a0 BS |
1596 | abi_ulong sigc_mask; /* sigmask to restore */ |
1597 | abi_ulong sigc_sp; /* stack pointer */ | |
1598 | abi_ulong sigc_pc; /* program counter */ | |
1599 | abi_ulong sigc_npc; /* next program counter */ | |
1600 | abi_ulong sigc_psr; /* for condition codes etc */ | |
1601 | abi_ulong sigc_g1; /* User uses these two registers */ | |
1602 | abi_ulong sigc_o0; /* within the trampoline code. */ | |
6d5e216d FB |
1603 | |
1604 | /* Now comes information regarding the users window set | |
1605 | * at the time of the signal. | |
1606 | */ | |
992f48a0 | 1607 | abi_ulong sigc_oswins; /* outstanding windows */ |
6d5e216d FB |
1608 | |
1609 | /* stack ptrs for each regwin buf */ | |
1610 | char *sigc_spbuf[__SUNOS_MAXWIN]; | |
1611 | ||
1612 | /* Windows to restore after signal */ | |
1613 | struct { | |
992f48a0 BS |
1614 | abi_ulong locals[8]; |
1615 | abi_ulong ins[8]; | |
6d5e216d FB |
1616 | } sigc_wbuf[__SUNOS_MAXWIN]; |
1617 | }; | |
1618 | /* A Sparc stack frame */ | |
1619 | struct sparc_stackf { | |
992f48a0 BS |
1620 | abi_ulong locals[8]; |
1621 | abi_ulong ins[6]; | |
6d5e216d | 1622 | struct sparc_stackf *fp; |
992f48a0 | 1623 | abi_ulong callers_pc; |
6d5e216d | 1624 | char *structptr; |
992f48a0 BS |
1625 | abi_ulong xargs[6]; |
1626 | abi_ulong xxargs[1]; | |
6d5e216d FB |
1627 | }; |
1628 | ||
1629 | typedef struct { | |
1630 | struct { | |
992f48a0 BS |
1631 | abi_ulong psr; |
1632 | abi_ulong pc; | |
1633 | abi_ulong npc; | |
1634 | abi_ulong y; | |
1635 | abi_ulong u_regs[16]; /* globals and ins */ | |
6d5e216d FB |
1636 | } si_regs; |
1637 | int si_mask; | |
1638 | } __siginfo_t; | |
1639 | ||
1640 | typedef struct { | |
1641 | unsigned long si_float_regs [32]; | |
1642 | unsigned long si_fsr; | |
1643 | unsigned long si_fpqdepth; | |
1644 | struct { | |
1645 | unsigned long *insn_addr; | |
1646 | unsigned long insn; | |
1647 | } si_fpqueue [16]; | |
74ccb34e | 1648 | } qemu_siginfo_fpu_t; |
6d5e216d FB |
1649 | |
1650 | ||
1651 | struct target_signal_frame { | |
1652 | struct sparc_stackf ss; | |
1653 | __siginfo_t info; | |
f8b0aa25 | 1654 | abi_ulong fpu_save; |
992f48a0 BS |
1655 | abi_ulong insns[2] __attribute__ ((aligned (8))); |
1656 | abi_ulong extramask[TARGET_NSIG_WORDS - 1]; | |
1657 | abi_ulong extra_size; /* Should be 0 */ | |
74ccb34e | 1658 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
1659 | }; |
1660 | struct target_rt_signal_frame { | |
1661 | struct sparc_stackf ss; | |
1662 | siginfo_t info; | |
992f48a0 | 1663 | abi_ulong regs[20]; |
6d5e216d | 1664 | sigset_t mask; |
f8b0aa25 | 1665 | abi_ulong fpu_save; |
6d5e216d FB |
1666 | unsigned int insns[2]; |
1667 | stack_t stack; | |
1668 | unsigned int extra_size; /* Should be 0 */ | |
74ccb34e | 1669 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
1670 | }; |
1671 | ||
e80cfcfc FB |
1672 | #define UREG_O0 16 |
1673 | #define UREG_O6 22 | |
1674 | #define UREG_I0 0 | |
1675 | #define UREG_I1 1 | |
1676 | #define UREG_I2 2 | |
5bfb56b2 BS |
1677 | #define UREG_I3 3 |
1678 | #define UREG_I4 4 | |
1679 | #define UREG_I5 5 | |
e80cfcfc FB |
1680 | #define UREG_I6 6 |
1681 | #define UREG_I7 7 | |
1682 | #define UREG_L0 8 | |
6d5e216d FB |
1683 | #define UREG_FP UREG_I6 |
1684 | #define UREG_SP UREG_O6 | |
1685 | ||
624f7979 | 1686 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, |
459a4017 | 1687 | CPUState *env, unsigned long framesize) |
6d5e216d | 1688 | { |
459a4017 | 1689 | abi_ulong sp; |
6d5e216d FB |
1690 | |
1691 | sp = env->regwptr[UREG_FP]; | |
6d5e216d FB |
1692 | |
1693 | /* This is the X/Open sanctioned signal stack switching. */ | |
624f7979 | 1694 | if (sa->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
1695 | if (!on_sig_stack(sp) |
1696 | && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7)) | |
1697 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
6d5e216d | 1698 | } |
459a4017 | 1699 | return sp - framesize; |
6d5e216d FB |
1700 | } |
1701 | ||
1702 | static int | |
992f48a0 | 1703 | setup___siginfo(__siginfo_t *si, CPUState *env, abi_ulong mask) |
6d5e216d FB |
1704 | { |
1705 | int err = 0, i; | |
1706 | ||
6d5e216d | 1707 | err |= __put_user(env->psr, &si->si_regs.psr); |
6d5e216d FB |
1708 | err |= __put_user(env->pc, &si->si_regs.pc); |
1709 | err |= __put_user(env->npc, &si->si_regs.npc); | |
1710 | err |= __put_user(env->y, &si->si_regs.y); | |
a315a145 | 1711 | for (i=0; i < 8; i++) { |
6d5e216d FB |
1712 | err |= __put_user(env->gregs[i], &si->si_regs.u_regs[i]); |
1713 | } | |
a315a145 | 1714 | for (i=0; i < 8; i++) { |
e80cfcfc | 1715 | err |= __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]); |
6d5e216d | 1716 | } |
6d5e216d FB |
1717 | err |= __put_user(mask, &si->si_mask); |
1718 | return err; | |
1719 | } | |
e80cfcfc | 1720 | |
80a9d035 | 1721 | #if 0 |
6d5e216d FB |
1722 | static int |
1723 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ | |
1724 | CPUState *env, unsigned long mask) | |
1725 | { | |
1726 | int err = 0; | |
1727 | ||
1728 | err |= __put_user(mask, &sc->sigc_mask); | |
1729 | err |= __put_user(env->regwptr[UREG_SP], &sc->sigc_sp); | |
1730 | err |= __put_user(env->pc, &sc->sigc_pc); | |
1731 | err |= __put_user(env->npc, &sc->sigc_npc); | |
1732 | err |= __put_user(env->psr, &sc->sigc_psr); | |
1733 | err |= __put_user(env->gregs[1], &sc->sigc_g1); | |
1734 | err |= __put_user(env->regwptr[UREG_O0], &sc->sigc_o0); | |
1735 | ||
1736 | return err; | |
1737 | } | |
80a9d035 | 1738 | #endif |
6d5e216d FB |
1739 | #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7))) |
1740 | ||
624f7979 | 1741 | static void setup_frame(int sig, struct target_sigaction *ka, |
6d5e216d FB |
1742 | target_sigset_t *set, CPUState *env) |
1743 | { | |
459a4017 | 1744 | abi_ulong sf_addr; |
6d5e216d FB |
1745 | struct target_signal_frame *sf; |
1746 | int sigframe_size, err, i; | |
1747 | ||
1748 | /* 1. Make sure everything is clean */ | |
1749 | //synchronize_user_stack(); | |
1750 | ||
1751 | sigframe_size = NF_ALIGNEDSZ; | |
459a4017 | 1752 | sf_addr = get_sigframe(ka, env, sigframe_size); |
6d5e216d | 1753 | |
459a4017 FB |
1754 | sf = lock_user(VERIFY_WRITE, sf_addr, |
1755 | sizeof(struct target_signal_frame), 0); | |
1756 | if (!sf) | |
1757 | goto sigsegv; | |
1758 | ||
e80cfcfc | 1759 | //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); |
6d5e216d FB |
1760 | #if 0 |
1761 | if (invalid_frame_pointer(sf, sigframe_size)) | |
1762 | goto sigill_and_return; | |
1763 | #endif | |
1764 | /* 2. Save the current process state */ | |
1765 | err = setup___siginfo(&sf->info, env, set->sig[0]); | |
1766 | err |= __put_user(0, &sf->extra_size); | |
1767 | ||
1768 | //err |= save_fpu_state(regs, &sf->fpu_state); | |
1769 | //err |= __put_user(&sf->fpu_state, &sf->fpu_save); | |
1770 | ||
1771 | err |= __put_user(set->sig[0], &sf->info.si_mask); | |
1772 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
1773 | err |= __put_user(set->sig[i + 1], &sf->extramask[i]); | |
1774 | } | |
1775 | ||
a315a145 | 1776 | for (i = 0; i < 8; i++) { |
e80cfcfc | 1777 | err |= __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]); |
6d5e216d | 1778 | } |
a315a145 | 1779 | for (i = 0; i < 8; i++) { |
e80cfcfc | 1780 | err |= __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]); |
6d5e216d | 1781 | } |
6d5e216d FB |
1782 | if (err) |
1783 | goto sigsegv; | |
1784 | ||
1785 | /* 3. signal handler back-trampoline and parameters */ | |
459a4017 | 1786 | env->regwptr[UREG_FP] = sf_addr; |
6d5e216d | 1787 | env->regwptr[UREG_I0] = sig; |
459a4017 FB |
1788 | env->regwptr[UREG_I1] = sf_addr + |
1789 | offsetof(struct target_signal_frame, info); | |
1790 | env->regwptr[UREG_I2] = sf_addr + | |
1791 | offsetof(struct target_signal_frame, info); | |
6d5e216d FB |
1792 | |
1793 | /* 4. signal handler */ | |
624f7979 | 1794 | env->pc = ka->_sa_handler; |
6d5e216d FB |
1795 | env->npc = (env->pc + 4); |
1796 | /* 5. return to kernel instructions */ | |
624f7979 PB |
1797 | if (ka->sa_restorer) |
1798 | env->regwptr[UREG_I7] = ka->sa_restorer; | |
6d5e216d | 1799 | else { |
775b58d8 | 1800 | uint32_t val32; |
459a4017 FB |
1801 | |
1802 | env->regwptr[UREG_I7] = sf_addr + | |
1803 | offsetof(struct target_signal_frame, insns) - 2 * 4; | |
6d5e216d FB |
1804 | |
1805 | /* mov __NR_sigreturn, %g1 */ | |
775b58d8 FB |
1806 | val32 = 0x821020d8; |
1807 | err |= __put_user(val32, &sf->insns[0]); | |
6d5e216d FB |
1808 | |
1809 | /* t 0x10 */ | |
775b58d8 FB |
1810 | val32 = 0x91d02010; |
1811 | err |= __put_user(val32, &sf->insns[1]); | |
6d5e216d FB |
1812 | if (err) |
1813 | goto sigsegv; | |
1814 | ||
1815 | /* Flush instruction space. */ | |
1816 | //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0])); | |
80a9d035 | 1817 | // tb_flush(env); |
6d5e216d | 1818 | } |
459a4017 | 1819 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d | 1820 | return; |
459a4017 FB |
1821 | #if 0 |
1822 | sigill_and_return: | |
6d5e216d | 1823 | force_sig(TARGET_SIGILL); |
459a4017 | 1824 | #endif |
6d5e216d | 1825 | sigsegv: |
e80cfcfc | 1826 | //fprintf(stderr, "force_sig\n"); |
459a4017 | 1827 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d FB |
1828 | force_sig(TARGET_SIGSEGV); |
1829 | } | |
1830 | static inline int | |
74ccb34e | 1831 | restore_fpu_state(CPUState *env, qemu_siginfo_fpu_t *fpu) |
6d5e216d FB |
1832 | { |
1833 | int err; | |
1834 | #if 0 | |
1835 | #ifdef CONFIG_SMP | |
1836 | if (current->flags & PF_USEDFPU) | |
1837 | regs->psr &= ~PSR_EF; | |
1838 | #else | |
1839 | if (current == last_task_used_math) { | |
1840 | last_task_used_math = 0; | |
1841 | regs->psr &= ~PSR_EF; | |
1842 | } | |
1843 | #endif | |
1844 | current->used_math = 1; | |
1845 | current->flags &= ~PF_USEDFPU; | |
1846 | #endif | |
1847 | #if 0 | |
1848 | if (verify_area (VERIFY_READ, fpu, sizeof(*fpu))) | |
1849 | return -EFAULT; | |
1850 | #endif | |
1851 | ||
fafffaef FB |
1852 | #if 0 |
1853 | /* XXX: incorrect */ | |
6d5e216d FB |
1854 | err = __copy_from_user(&env->fpr[0], &fpu->si_float_regs[0], |
1855 | (sizeof(unsigned long) * 32)); | |
fafffaef | 1856 | #endif |
6d5e216d FB |
1857 | err |= __get_user(env->fsr, &fpu->si_fsr); |
1858 | #if 0 | |
1859 | err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth); | |
1860 | if (current->thread.fpqdepth != 0) | |
1861 | err |= __copy_from_user(¤t->thread.fpqueue[0], | |
1862 | &fpu->si_fpqueue[0], | |
1863 | ((sizeof(unsigned long) + | |
1864 | (sizeof(unsigned long *)))*16)); | |
1865 | #endif | |
1866 | return err; | |
1867 | } | |
1868 | ||
1869 | ||
624f7979 | 1870 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
6d5e216d FB |
1871 | target_siginfo_t *info, |
1872 | target_sigset_t *set, CPUState *env) | |
1873 | { | |
1874 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
1875 | } | |
1876 | ||
1877 | long do_sigreturn(CPUState *env) | |
1878 | { | |
f8b0aa25 | 1879 | abi_ulong sf_addr; |
6d5e216d | 1880 | struct target_signal_frame *sf; |
e80cfcfc | 1881 | uint32_t up_psr, pc, npc; |
6d5e216d | 1882 | target_sigset_t set; |
e80cfcfc | 1883 | sigset_t host_set; |
f8b0aa25 | 1884 | abi_ulong fpu_save_addr; |
e80cfcfc | 1885 | int err, i; |
6d5e216d | 1886 | |
f8b0aa25 FB |
1887 | sf_addr = env->regwptr[UREG_FP]; |
1888 | if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) | |
1889 | goto segv_and_exit; | |
80a9d035 | 1890 | #if 0 |
e80cfcfc FB |
1891 | fprintf(stderr, "sigreturn\n"); |
1892 | fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); | |
80a9d035 | 1893 | #endif |
e80cfcfc | 1894 | //cpu_dump_state(env, stderr, fprintf, 0); |
6d5e216d FB |
1895 | |
1896 | /* 1. Make sure we are not getting garbage from the user */ | |
6d5e216d | 1897 | |
f8b0aa25 | 1898 | if (sf_addr & 3) |
6d5e216d FB |
1899 | goto segv_and_exit; |
1900 | ||
1901 | err = __get_user(pc, &sf->info.si_regs.pc); | |
1902 | err |= __get_user(npc, &sf->info.si_regs.npc); | |
1903 | ||
6d5e216d FB |
1904 | if ((pc | npc) & 3) |
1905 | goto segv_and_exit; | |
1906 | ||
1907 | /* 2. Restore the state */ | |
e80cfcfc FB |
1908 | err |= __get_user(up_psr, &sf->info.si_regs.psr); |
1909 | ||
6d5e216d | 1910 | /* User can only change condition codes and FPU enabling in %psr. */ |
a315a145 FB |
1911 | env->psr = (up_psr & (PSR_ICC /* | PSR_EF */)) |
1912 | | (env->psr & ~(PSR_ICC /* | PSR_EF */)); | |
1913 | ||
1914 | env->pc = pc; | |
1915 | env->npc = npc; | |
e80cfcfc | 1916 | err |= __get_user(env->y, &sf->info.si_regs.y); |
a315a145 | 1917 | for (i=0; i < 8; i++) { |
e80cfcfc FB |
1918 | err |= __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]); |
1919 | } | |
a315a145 | 1920 | for (i=0; i < 8; i++) { |
e80cfcfc FB |
1921 | err |= __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]); |
1922 | } | |
6d5e216d | 1923 | |
f8b0aa25 | 1924 | err |= __get_user(fpu_save_addr, &sf->fpu_save); |
6d5e216d | 1925 | |
e80cfcfc FB |
1926 | //if (fpu_save) |
1927 | // err |= restore_fpu_state(env, fpu_save); | |
6d5e216d FB |
1928 | |
1929 | /* This is pretty much atomic, no amount locking would prevent | |
1930 | * the races which exist anyways. | |
1931 | */ | |
1932 | err |= __get_user(set.sig[0], &sf->info.si_mask); | |
e80cfcfc FB |
1933 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1934 | err |= (__get_user(set.sig[i], &sf->extramask[i - 1])); | |
1935 | } | |
1936 | ||
1937 | target_to_host_sigset_internal(&host_set, &set); | |
1938 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
6d5e216d FB |
1939 | |
1940 | if (err) | |
1941 | goto segv_and_exit; | |
f8b0aa25 | 1942 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
1943 | return env->regwptr[0]; |
1944 | ||
1945 | segv_and_exit: | |
f8b0aa25 | 1946 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
1947 | force_sig(TARGET_SIGSEGV); |
1948 | } | |
1949 | ||
1950 | long do_rt_sigreturn(CPUState *env) | |
1951 | { | |
1952 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 1953 | return -TARGET_ENOSYS; |
6d5e216d FB |
1954 | } |
1955 | ||
459a4017 | 1956 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) |
5bfb56b2 BS |
1957 | #define MC_TSTATE 0 |
1958 | #define MC_PC 1 | |
1959 | #define MC_NPC 2 | |
1960 | #define MC_Y 3 | |
1961 | #define MC_G1 4 | |
1962 | #define MC_G2 5 | |
1963 | #define MC_G3 6 | |
1964 | #define MC_G4 7 | |
1965 | #define MC_G5 8 | |
1966 | #define MC_G6 9 | |
1967 | #define MC_G7 10 | |
1968 | #define MC_O0 11 | |
1969 | #define MC_O1 12 | |
1970 | #define MC_O2 13 | |
1971 | #define MC_O3 14 | |
1972 | #define MC_O4 15 | |
1973 | #define MC_O5 16 | |
1974 | #define MC_O6 17 | |
1975 | #define MC_O7 18 | |
1976 | #define MC_NGREG 19 | |
1977 | ||
992f48a0 | 1978 | typedef abi_ulong target_mc_greg_t; |
5bfb56b2 BS |
1979 | typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG]; |
1980 | ||
1981 | struct target_mc_fq { | |
992f48a0 | 1982 | abi_ulong *mcfq_addr; |
5bfb56b2 BS |
1983 | uint32_t mcfq_insn; |
1984 | }; | |
1985 | ||
1986 | struct target_mc_fpu { | |
1987 | union { | |
1988 | uint32_t sregs[32]; | |
1989 | uint64_t dregs[32]; | |
1990 | //uint128_t qregs[16]; | |
1991 | } mcfpu_fregs; | |
992f48a0 BS |
1992 | abi_ulong mcfpu_fsr; |
1993 | abi_ulong mcfpu_fprs; | |
1994 | abi_ulong mcfpu_gsr; | |
5bfb56b2 BS |
1995 | struct target_mc_fq *mcfpu_fq; |
1996 | unsigned char mcfpu_qcnt; | |
1997 | unsigned char mcfpu_qentsz; | |
1998 | unsigned char mcfpu_enab; | |
1999 | }; | |
2000 | typedef struct target_mc_fpu target_mc_fpu_t; | |
2001 | ||
2002 | typedef struct { | |
2003 | target_mc_gregset_t mc_gregs; | |
2004 | target_mc_greg_t mc_fp; | |
2005 | target_mc_greg_t mc_i7; | |
2006 | target_mc_fpu_t mc_fpregs; | |
2007 | } target_mcontext_t; | |
2008 | ||
2009 | struct target_ucontext { | |
2010 | struct target_ucontext *uc_link; | |
992f48a0 | 2011 | abi_ulong uc_flags; |
5bfb56b2 BS |
2012 | target_sigset_t uc_sigmask; |
2013 | target_mcontext_t uc_mcontext; | |
2014 | }; | |
2015 | ||
2016 | /* A V9 register window */ | |
2017 | struct target_reg_window { | |
992f48a0 BS |
2018 | abi_ulong locals[8]; |
2019 | abi_ulong ins[8]; | |
5bfb56b2 BS |
2020 | }; |
2021 | ||
2022 | #define TARGET_STACK_BIAS 2047 | |
2023 | ||
2024 | /* {set, get}context() needed for 64-bit SparcLinux userland. */ | |
2025 | void sparc64_set_context(CPUSPARCState *env) | |
2026 | { | |
459a4017 FB |
2027 | abi_ulong ucp_addr; |
2028 | struct target_ucontext *ucp; | |
5bfb56b2 | 2029 | target_mc_gregset_t *grp; |
992f48a0 | 2030 | abi_ulong pc, npc, tstate; |
459a4017 | 2031 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2032 | unsigned char fenab; |
2033 | int err; | |
2034 | unsigned int i; | |
5bfb56b2 | 2035 | |
459a4017 FB |
2036 | ucp_addr = env->regwptr[UREG_I0]; |
2037 | if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) | |
2038 | goto do_sigsegv; | |
5bfb56b2 | 2039 | grp = &ucp->uc_mcontext.mc_gregs; |
579a97f7 FB |
2040 | err = __get_user(pc, &((*grp)[MC_PC])); |
2041 | err |= __get_user(npc, &((*grp)[MC_NPC])); | |
5bfb56b2 BS |
2042 | if (err || ((pc | npc) & 3)) |
2043 | goto do_sigsegv; | |
2044 | if (env->regwptr[UREG_I1]) { | |
2045 | target_sigset_t target_set; | |
2046 | sigset_t set; | |
2047 | ||
2048 | if (TARGET_NSIG_WORDS == 1) { | |
579a97f7 | 2049 | if (__get_user(target_set.sig[0], &ucp->uc_sigmask.sig[0])) |
5bfb56b2 BS |
2050 | goto do_sigsegv; |
2051 | } else { | |
459a4017 FB |
2052 | abi_ulong *src, *dst; |
2053 | src = ucp->uc_sigmask.sig; | |
2054 | dst = target_set.sig; | |
992f48a0 | 2055 | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
5bfb56b2 | 2056 | i++, dst++, src++) |
459a4017 | 2057 | err |= __get_user(*dst, src); |
5bfb56b2 BS |
2058 | if (err) |
2059 | goto do_sigsegv; | |
2060 | } | |
2061 | target_to_host_sigset_internal(&set, &target_set); | |
2062 | sigprocmask(SIG_SETMASK, &set, NULL); | |
2063 | } | |
2064 | env->pc = pc; | |
2065 | env->npc = npc; | |
579a97f7 FB |
2066 | err |= __get_user(env->y, &((*grp)[MC_Y])); |
2067 | err |= __get_user(tstate, &((*grp)[MC_TSTATE])); | |
5bfb56b2 BS |
2068 | env->asi = (tstate >> 24) & 0xff; |
2069 | PUT_CCR(env, tstate >> 32); | |
2070 | PUT_CWP64(env, tstate & 0x1f); | |
579a97f7 FB |
2071 | err |= __get_user(env->gregs[1], (&(*grp)[MC_G1])); |
2072 | err |= __get_user(env->gregs[2], (&(*grp)[MC_G2])); | |
2073 | err |= __get_user(env->gregs[3], (&(*grp)[MC_G3])); | |
2074 | err |= __get_user(env->gregs[4], (&(*grp)[MC_G4])); | |
2075 | err |= __get_user(env->gregs[5], (&(*grp)[MC_G5])); | |
2076 | err |= __get_user(env->gregs[6], (&(*grp)[MC_G6])); | |
2077 | err |= __get_user(env->gregs[7], (&(*grp)[MC_G7])); | |
2078 | err |= __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0])); | |
2079 | err |= __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1])); | |
2080 | err |= __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2])); | |
2081 | err |= __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3])); | |
2082 | err |= __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4])); | |
2083 | err |= __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5])); | |
2084 | err |= __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6])); | |
2085 | err |= __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7])); | |
2086 | ||
2087 | err |= __get_user(fp, &(ucp->uc_mcontext.mc_fp)); | |
2088 | err |= __get_user(i7, &(ucp->uc_mcontext.mc_i7)); | |
579a97f7 | 2089 | |
459a4017 FB |
2090 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2091 | if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2092 | abi_ulong) != 0) | |
2093 | goto do_sigsegv; | |
2094 | if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2095 | abi_ulong) != 0) | |
2096 | goto do_sigsegv; | |
579a97f7 FB |
2097 | err |= __get_user(fenab, &(ucp->uc_mcontext.mc_fpregs.mcfpu_enab)); |
2098 | err |= __get_user(env->fprs, &(ucp->uc_mcontext.mc_fpregs.mcfpu_fprs)); | |
459a4017 FB |
2099 | { |
2100 | uint32_t *src, *dst; | |
2101 | src = ucp->uc_mcontext.mc_fpregs.mcfpu_fregs.sregs; | |
2102 | dst = env->fpr; | |
2103 | /* XXX: check that the CPU storage is the same as user context */ | |
2104 | for (i = 0; i < 64; i++, dst++, src++) | |
2105 | err |= __get_user(*dst, src); | |
2106 | } | |
579a97f7 FB |
2107 | err |= __get_user(env->fsr, |
2108 | &(ucp->uc_mcontext.mc_fpregs.mcfpu_fsr)); | |
2109 | err |= __get_user(env->gsr, | |
2110 | &(ucp->uc_mcontext.mc_fpregs.mcfpu_gsr)); | |
5bfb56b2 BS |
2111 | if (err) |
2112 | goto do_sigsegv; | |
459a4017 | 2113 | unlock_user_struct(ucp, ucp_addr, 0); |
5bfb56b2 BS |
2114 | return; |
2115 | do_sigsegv: | |
459a4017 | 2116 | unlock_user_struct(ucp, ucp_addr, 0); |
5bfb56b2 BS |
2117 | force_sig(SIGSEGV); |
2118 | } | |
2119 | ||
2120 | void sparc64_get_context(CPUSPARCState *env) | |
2121 | { | |
459a4017 FB |
2122 | abi_ulong ucp_addr; |
2123 | struct target_ucontext *ucp; | |
5bfb56b2 BS |
2124 | target_mc_gregset_t *grp; |
2125 | target_mcontext_t *mcp; | |
459a4017 | 2126 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2127 | int err; |
2128 | unsigned int i; | |
5bfb56b2 BS |
2129 | target_sigset_t target_set; |
2130 | sigset_t set; | |
2131 | ||
459a4017 FB |
2132 | ucp_addr = env->regwptr[UREG_I0]; |
2133 | if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) | |
2134 | goto do_sigsegv; | |
2135 | ||
5bfb56b2 BS |
2136 | mcp = &ucp->uc_mcontext; |
2137 | grp = &mcp->mc_gregs; | |
2138 | ||
2139 | /* Skip over the trap instruction, first. */ | |
2140 | env->pc = env->npc; | |
2141 | env->npc += 4; | |
2142 | ||
2143 | err = 0; | |
2144 | ||
2145 | sigprocmask(0, NULL, &set); | |
2146 | host_to_target_sigset_internal(&target_set, &set); | |
459a4017 | 2147 | if (TARGET_NSIG_WORDS == 1) { |
579a97f7 FB |
2148 | err |= __put_user(target_set.sig[0], |
2149 | (abi_ulong *)&ucp->uc_sigmask); | |
459a4017 FB |
2150 | } else { |
2151 | abi_ulong *src, *dst; | |
2152 | src = target_set.sig; | |
2153 | dst = ucp->uc_sigmask.sig; | |
992f48a0 | 2154 | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
5bfb56b2 | 2155 | i++, dst++, src++) |
459a4017 | 2156 | err |= __put_user(*src, dst); |
5bfb56b2 BS |
2157 | if (err) |
2158 | goto do_sigsegv; | |
2159 | } | |
2160 | ||
459a4017 FB |
2161 | /* XXX: tstate must be saved properly */ |
2162 | // err |= __put_user(env->tstate, &((*grp)[MC_TSTATE])); | |
579a97f7 FB |
2163 | err |= __put_user(env->pc, &((*grp)[MC_PC])); |
2164 | err |= __put_user(env->npc, &((*grp)[MC_NPC])); | |
2165 | err |= __put_user(env->y, &((*grp)[MC_Y])); | |
2166 | err |= __put_user(env->gregs[1], &((*grp)[MC_G1])); | |
2167 | err |= __put_user(env->gregs[2], &((*grp)[MC_G2])); | |
2168 | err |= __put_user(env->gregs[3], &((*grp)[MC_G3])); | |
2169 | err |= __put_user(env->gregs[4], &((*grp)[MC_G4])); | |
2170 | err |= __put_user(env->gregs[5], &((*grp)[MC_G5])); | |
2171 | err |= __put_user(env->gregs[6], &((*grp)[MC_G6])); | |
2172 | err |= __put_user(env->gregs[7], &((*grp)[MC_G7])); | |
2173 | err |= __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0])); | |
2174 | err |= __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1])); | |
2175 | err |= __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2])); | |
2176 | err |= __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3])); | |
2177 | err |= __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4])); | |
2178 | err |= __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5])); | |
2179 | err |= __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6])); | |
2180 | err |= __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7])); | |
2181 | ||
459a4017 FB |
2182 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2183 | fp = i7 = 0; | |
2184 | if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2185 | abi_ulong) != 0) | |
2186 | goto do_sigsegv; | |
2187 | if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2188 | abi_ulong) != 0) | |
2189 | goto do_sigsegv; | |
579a97f7 FB |
2190 | err |= __put_user(fp, &(mcp->mc_fp)); |
2191 | err |= __put_user(i7, &(mcp->mc_i7)); | |
5bfb56b2 | 2192 | |
459a4017 FB |
2193 | { |
2194 | uint32_t *src, *dst; | |
2195 | src = env->fpr; | |
2196 | dst = ucp->uc_mcontext.mc_fpregs.mcfpu_fregs.sregs; | |
2197 | /* XXX: check that the CPU storage is the same as user context */ | |
2198 | for (i = 0; i < 64; i++, dst++, src++) | |
2199 | err |= __put_user(*src, dst); | |
2200 | } | |
579a97f7 FB |
2201 | err |= __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); |
2202 | err |= __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); | |
2203 | err |= __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs)); | |
5bfb56b2 BS |
2204 | |
2205 | if (err) | |
2206 | goto do_sigsegv; | |
459a4017 | 2207 | unlock_user_struct(ucp, ucp_addr, 1); |
5bfb56b2 BS |
2208 | return; |
2209 | do_sigsegv: | |
459a4017 | 2210 | unlock_user_struct(ucp, ucp_addr, 1); |
5bfb56b2 BS |
2211 | force_sig(SIGSEGV); |
2212 | } | |
2213 | #endif | |
d26bc211 | 2214 | #elif defined(TARGET_ABI_MIPSN64) |
540635ba TS |
2215 | |
2216 | # warning signal handling not implemented | |
2217 | ||
624f7979 | 2218 | static void setup_frame(int sig, struct target_sigaction *ka, |
540635ba TS |
2219 | target_sigset_t *set, CPUState *env) |
2220 | { | |
2221 | fprintf(stderr, "setup_frame: not implemented\n"); | |
2222 | } | |
2223 | ||
624f7979 | 2224 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
540635ba TS |
2225 | target_siginfo_t *info, |
2226 | target_sigset_t *set, CPUState *env) | |
2227 | { | |
2228 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2229 | } | |
2230 | ||
2231 | long do_sigreturn(CPUState *env) | |
2232 | { | |
2233 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 2234 | return -TARGET_ENOSYS; |
540635ba TS |
2235 | } |
2236 | ||
2237 | long do_rt_sigreturn(CPUState *env) | |
2238 | { | |
2239 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2240 | return -TARGET_ENOSYS; |
540635ba TS |
2241 | } |
2242 | ||
d26bc211 | 2243 | #elif defined(TARGET_ABI_MIPSN32) |
540635ba TS |
2244 | |
2245 | # warning signal handling not implemented | |
2246 | ||
624f7979 | 2247 | static void setup_frame(int sig, struct target_sigaction *ka, |
540635ba TS |
2248 | target_sigset_t *set, CPUState *env) |
2249 | { | |
2250 | fprintf(stderr, "setup_frame: not implemented\n"); | |
2251 | } | |
2252 | ||
624f7979 | 2253 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
540635ba TS |
2254 | target_siginfo_t *info, |
2255 | target_sigset_t *set, CPUState *env) | |
2256 | { | |
2257 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2258 | } | |
2259 | ||
2260 | long do_sigreturn(CPUState *env) | |
2261 | { | |
2262 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 2263 | return -TARGET_ENOSYS; |
540635ba TS |
2264 | } |
2265 | ||
2266 | long do_rt_sigreturn(CPUState *env) | |
2267 | { | |
2268 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2269 | return -TARGET_ENOSYS; |
540635ba TS |
2270 | } |
2271 | ||
d26bc211 | 2272 | #elif defined(TARGET_ABI_MIPSO32) |
106ec879 FB |
2273 | |
2274 | struct target_sigcontext { | |
2275 | uint32_t sc_regmask; /* Unused */ | |
2276 | uint32_t sc_status; | |
2277 | uint64_t sc_pc; | |
2278 | uint64_t sc_regs[32]; | |
2279 | uint64_t sc_fpregs[32]; | |
2280 | uint32_t sc_ownedfp; /* Unused */ | |
2281 | uint32_t sc_fpc_csr; | |
2282 | uint32_t sc_fpc_eir; /* Unused */ | |
2283 | uint32_t sc_used_math; | |
2284 | uint32_t sc_dsp; /* dsp status, was sc_ssflags */ | |
2285 | uint64_t sc_mdhi; | |
2286 | uint64_t sc_mdlo; | |
2287 | target_ulong sc_hi1; /* Was sc_cause */ | |
2288 | target_ulong sc_lo1; /* Was sc_badvaddr */ | |
2289 | target_ulong sc_hi2; /* Was sc_sigset[4] */ | |
2290 | target_ulong sc_lo2; | |
2291 | target_ulong sc_hi3; | |
2292 | target_ulong sc_lo3; | |
2293 | }; | |
2294 | ||
2295 | struct sigframe { | |
2296 | uint32_t sf_ass[4]; /* argument save space for o32 */ | |
2297 | uint32_t sf_code[2]; /* signal trampoline */ | |
2298 | struct target_sigcontext sf_sc; | |
2299 | target_sigset_t sf_mask; | |
2300 | }; | |
2301 | ||
2302 | /* Install trampoline to jump back from signal handler */ | |
2303 | static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall) | |
2304 | { | |
2305 | int err; | |
2306 | ||
2307 | /* | |
2308 | * Set up the return code ... | |
2309 | * | |
2310 | * li v0, __NR__foo_sigreturn | |
2311 | * syscall | |
2312 | */ | |
2313 | ||
2314 | err = __put_user(0x24020000 + syscall, tramp + 0); | |
2315 | err |= __put_user(0x0000000c , tramp + 1); | |
2316 | /* flush_cache_sigtramp((unsigned long) tramp); */ | |
2317 | return err; | |
2318 | } | |
2319 | ||
2320 | static inline int | |
2321 | setup_sigcontext(CPUState *regs, struct target_sigcontext *sc) | |
2322 | { | |
2323 | int err = 0; | |
2324 | ||
b5dc7732 | 2325 | err |= __put_user(regs->active_tc.PC, &sc->sc_pc); |
106ec879 | 2326 | |
b5dc7732 TS |
2327 | #define save_gp_reg(i) do { \ |
2328 | err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \ | |
106ec879 FB |
2329 | } while(0) |
2330 | __put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2); | |
2331 | save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6); | |
2332 | save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10); | |
2333 | save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14); | |
2334 | save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18); | |
2335 | save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22); | |
2336 | save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26); | |
2337 | save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30); | |
2338 | save_gp_reg(31); | |
388bb21a | 2339 | #undef save_gp_reg |
106ec879 | 2340 | |
b5dc7732 TS |
2341 | err |= __put_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2342 | err |= __put_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 FB |
2343 | |
2344 | /* Not used yet, but might be useful if we ever have DSP suppport */ | |
2345 | #if 0 | |
2346 | if (cpu_has_dsp) { | |
2347 | err |= __put_user(mfhi1(), &sc->sc_hi1); | |
2348 | err |= __put_user(mflo1(), &sc->sc_lo1); | |
2349 | err |= __put_user(mfhi2(), &sc->sc_hi2); | |
2350 | err |= __put_user(mflo2(), &sc->sc_lo2); | |
2351 | err |= __put_user(mfhi3(), &sc->sc_hi3); | |
2352 | err |= __put_user(mflo3(), &sc->sc_lo3); | |
2353 | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp); | |
2354 | } | |
2355 | /* same with 64 bit */ | |
388bb21a | 2356 | #ifdef CONFIG_64BIT |
106ec879 FB |
2357 | err |= __put_user(regs->hi, &sc->sc_hi[0]); |
2358 | err |= __put_user(regs->lo, &sc->sc_lo[0]); | |
2359 | if (cpu_has_dsp) { | |
2360 | err |= __put_user(mfhi1(), &sc->sc_hi[1]); | |
2361 | err |= __put_user(mflo1(), &sc->sc_lo[1]); | |
2362 | err |= __put_user(mfhi2(), &sc->sc_hi[2]); | |
2363 | err |= __put_user(mflo2(), &sc->sc_lo[2]); | |
2364 | err |= __put_user(mfhi3(), &sc->sc_hi[3]); | |
2365 | err |= __put_user(mflo3(), &sc->sc_lo[3]); | |
2366 | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp); | |
2367 | } | |
388bb21a TS |
2368 | #endif |
2369 | #endif | |
106ec879 | 2370 | |
388bb21a | 2371 | #if 0 |
106ec879 FB |
2372 | err |= __put_user(!!used_math(), &sc->sc_used_math); |
2373 | ||
2374 | if (!used_math()) | |
2375 | goto out; | |
2376 | ||
2377 | /* | |
2378 | * Save FPU state to signal context. Signal handler will "inherit" | |
2379 | * current FPU state. | |
2380 | */ | |
2381 | preempt_disable(); | |
2382 | ||
2383 | if (!is_fpu_owner()) { | |
2384 | own_fpu(); | |
2385 | restore_fp(current); | |
2386 | } | |
2387 | err |= save_fp_context(sc); | |
2388 | ||
2389 | preempt_enable(); | |
2390 | out: | |
2391 | #endif | |
2392 | return err; | |
2393 | } | |
2394 | ||
2395 | static inline int | |
2396 | restore_sigcontext(CPUState *regs, struct target_sigcontext *sc) | |
2397 | { | |
2398 | int err = 0; | |
2399 | ||
2400 | err |= __get_user(regs->CP0_EPC, &sc->sc_pc); | |
2401 | ||
b5dc7732 TS |
2402 | err |= __get_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2403 | err |= __get_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2404 | |
ead9360e | 2405 | #define restore_gp_reg(i) do { \ |
b5dc7732 | 2406 | err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \ |
106ec879 FB |
2407 | } while(0) |
2408 | restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3); | |
2409 | restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6); | |
2410 | restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9); | |
2411 | restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12); | |
2412 | restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15); | |
2413 | restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18); | |
2414 | restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21); | |
2415 | restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24); | |
2416 | restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27); | |
2417 | restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30); | |
2418 | restore_gp_reg(31); | |
388bb21a | 2419 | #undef restore_gp_reg |
106ec879 FB |
2420 | |
2421 | #if 0 | |
2422 | if (cpu_has_dsp) { | |
2423 | err |= __get_user(treg, &sc->sc_hi1); mthi1(treg); | |
2424 | err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg); | |
2425 | err |= __get_user(treg, &sc->sc_hi2); mthi2(treg); | |
2426 | err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg); | |
2427 | err |= __get_user(treg, &sc->sc_hi3); mthi3(treg); | |
2428 | err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg); | |
2429 | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); | |
2430 | } | |
388bb21a | 2431 | #ifdef CONFIG_64BIT |
106ec879 FB |
2432 | err |= __get_user(regs->hi, &sc->sc_hi[0]); |
2433 | err |= __get_user(regs->lo, &sc->sc_lo[0]); | |
2434 | if (cpu_has_dsp) { | |
2435 | err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg); | |
2436 | err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg); | |
2437 | err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg); | |
2438 | err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg); | |
2439 | err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg); | |
2440 | err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg); | |
2441 | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); | |
2442 | } | |
388bb21a | 2443 | #endif |
106ec879 FB |
2444 | |
2445 | err |= __get_user(used_math, &sc->sc_used_math); | |
2446 | conditional_used_math(used_math); | |
2447 | ||
2448 | preempt_disable(); | |
2449 | ||
2450 | if (used_math()) { | |
2451 | /* restore fpu context if we have used it before */ | |
2452 | own_fpu(); | |
2453 | err |= restore_fp_context(sc); | |
2454 | } else { | |
2455 | /* signal handler may have used FPU. Give it up. */ | |
2456 | lose_fpu(); | |
2457 | } | |
2458 | ||
2459 | preempt_enable(); | |
2460 | #endif | |
2461 | return err; | |
2462 | } | |
2463 | /* | |
2464 | * Determine which stack to use.. | |
2465 | */ | |
579a97f7 | 2466 | static inline abi_ulong |
624f7979 | 2467 | get_sigframe(struct target_sigaction *ka, CPUState *regs, size_t frame_size) |
106ec879 FB |
2468 | { |
2469 | unsigned long sp; | |
2470 | ||
2471 | /* Default to using normal stack */ | |
b5dc7732 | 2472 | sp = regs->active_tc.gpr[29]; |
106ec879 FB |
2473 | |
2474 | /* | |
2475 | * FPU emulator may have it's own trampoline active just | |
2476 | * above the user stack, 16-bytes before the next lowest | |
2477 | * 16 byte boundary. Try to avoid trashing it. | |
2478 | */ | |
2479 | sp -= 32; | |
2480 | ||
106ec879 | 2481 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 2482 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { |
a04e134a TS |
2483 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2484 | } | |
106ec879 | 2485 | |
579a97f7 | 2486 | return (sp - frame_size) & ~7; |
106ec879 FB |
2487 | } |
2488 | ||
579a97f7 | 2489 | /* compare linux/arch/mips/kernel/signal.c:setup_frame() */ |
624f7979 | 2490 | static void setup_frame(int sig, struct target_sigaction * ka, |
579a97f7 | 2491 | target_sigset_t *set, CPUState *regs) |
106ec879 FB |
2492 | { |
2493 | struct sigframe *frame; | |
579a97f7 | 2494 | abi_ulong frame_addr; |
106ec879 FB |
2495 | int i; |
2496 | ||
579a97f7 FB |
2497 | frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
2498 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
106ec879 FB |
2499 | goto give_sigsegv; |
2500 | ||
2501 | install_sigtramp(frame->sf_code, TARGET_NR_sigreturn); | |
2502 | ||
2503 | if(setup_sigcontext(regs, &frame->sf_sc)) | |
2504 | goto give_sigsegv; | |
2505 | ||
2506 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
2507 | if(__put_user(set->sig[i], &frame->sf_mask.sig[i])) | |
2508 | goto give_sigsegv; | |
2509 | } | |
2510 | ||
2511 | /* | |
2512 | * Arguments to signal handler: | |
2513 | * | |
2514 | * a0 = signal number | |
2515 | * a1 = 0 (should be cause) | |
2516 | * a2 = pointer to struct sigcontext | |
2517 | * | |
2518 | * $25 and PC point to the signal handler, $29 points to the | |
2519 | * struct sigframe. | |
2520 | */ | |
b5dc7732 TS |
2521 | regs->active_tc.gpr[ 4] = sig; |
2522 | regs->active_tc.gpr[ 5] = 0; | |
2523 | regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc); | |
2524 | regs->active_tc.gpr[29] = frame_addr; | |
2525 | regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code); | |
106ec879 FB |
2526 | /* The original kernel code sets CP0_EPC to the handler |
2527 | * since it returns to userland using eret | |
2528 | * we cannot do this here, and we must set PC directly */ | |
b5dc7732 | 2529 | regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler; |
579a97f7 | 2530 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 FB |
2531 | return; |
2532 | ||
2533 | give_sigsegv: | |
579a97f7 | 2534 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 | 2535 | force_sig(TARGET_SIGSEGV/*, current*/); |
5fafdf24 | 2536 | return; |
106ec879 FB |
2537 | } |
2538 | ||
2539 | long do_sigreturn(CPUState *regs) | |
2540 | { | |
388bb21a | 2541 | struct sigframe *frame; |
579a97f7 | 2542 | abi_ulong frame_addr; |
388bb21a TS |
2543 | sigset_t blocked; |
2544 | target_sigset_t target_set; | |
2545 | int i; | |
106ec879 FB |
2546 | |
2547 | #if defined(DEBUG_SIGNAL) | |
388bb21a | 2548 | fprintf(stderr, "do_sigreturn\n"); |
106ec879 | 2549 | #endif |
b5dc7732 | 2550 | frame_addr = regs->active_tc.gpr[29]; |
579a97f7 | 2551 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
106ec879 FB |
2552 | goto badframe; |
2553 | ||
388bb21a | 2554 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
106ec879 FB |
2555 | if(__get_user(target_set.sig[i], &frame->sf_mask.sig[i])) |
2556 | goto badframe; | |
388bb21a | 2557 | } |
106ec879 | 2558 | |
388bb21a TS |
2559 | target_to_host_sigset_internal(&blocked, &target_set); |
2560 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
106ec879 | 2561 | |
388bb21a | 2562 | if (restore_sigcontext(regs, &frame->sf_sc)) |
106ec879 FB |
2563 | goto badframe; |
2564 | ||
2565 | #if 0 | |
388bb21a TS |
2566 | /* |
2567 | * Don't let your children do this ... | |
2568 | */ | |
2569 | __asm__ __volatile__( | |
106ec879 FB |
2570 | "move\t$29, %0\n\t" |
2571 | "j\tsyscall_exit" | |
2572 | :/* no outputs */ | |
2573 | :"r" (®s)); | |
388bb21a | 2574 | /* Unreached */ |
106ec879 | 2575 | #endif |
3b46e624 | 2576 | |
b5dc7732 | 2577 | regs->active_tc.PC = regs->CP0_EPC; |
388bb21a | 2578 | /* I am not sure this is right, but it seems to work |
106ec879 FB |
2579 | * maybe a problem with nested signals ? */ |
2580 | regs->CP0_EPC = 0; | |
2581 | return 0; | |
2582 | ||
2583 | badframe: | |
388bb21a TS |
2584 | force_sig(TARGET_SIGSEGV/*, current*/); |
2585 | return 0; | |
106ec879 FB |
2586 | } |
2587 | ||
624f7979 | 2588 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
106ec879 FB |
2589 | target_siginfo_t *info, |
2590 | target_sigset_t *set, CPUState *env) | |
2591 | { | |
2592 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2593 | } | |
2594 | ||
2595 | long do_rt_sigreturn(CPUState *env) | |
2596 | { | |
2597 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2598 | return -TARGET_ENOSYS; |
106ec879 | 2599 | } |
6d5e216d | 2600 | |
c3b5bc8a TS |
2601 | #elif defined(TARGET_SH4) |
2602 | ||
2603 | /* | |
2604 | * code and data structures from linux kernel: | |
2605 | * include/asm-sh/sigcontext.h | |
2606 | * arch/sh/kernel/signal.c | |
2607 | */ | |
2608 | ||
2609 | struct target_sigcontext { | |
2610 | target_ulong oldmask; | |
2611 | ||
2612 | /* CPU registers */ | |
2613 | target_ulong sc_gregs[16]; | |
2614 | target_ulong sc_pc; | |
2615 | target_ulong sc_pr; | |
2616 | target_ulong sc_sr; | |
2617 | target_ulong sc_gbr; | |
2618 | target_ulong sc_mach; | |
2619 | target_ulong sc_macl; | |
2620 | ||
2621 | /* FPU registers */ | |
2622 | target_ulong sc_fpregs[16]; | |
2623 | target_ulong sc_xfpregs[16]; | |
2624 | unsigned int sc_fpscr; | |
2625 | unsigned int sc_fpul; | |
2626 | unsigned int sc_ownedfp; | |
2627 | }; | |
2628 | ||
2629 | struct target_sigframe | |
2630 | { | |
2631 | struct target_sigcontext sc; | |
2632 | target_ulong extramask[TARGET_NSIG_WORDS-1]; | |
2633 | uint16_t retcode[3]; | |
2634 | }; | |
2635 | ||
2636 | ||
2637 | struct target_ucontext { | |
2638 | target_ulong uc_flags; | |
2639 | struct target_ucontext *uc_link; | |
2640 | target_stack_t uc_stack; | |
2641 | struct target_sigcontext uc_mcontext; | |
2642 | target_sigset_t uc_sigmask; /* mask last for extensibility */ | |
2643 | }; | |
2644 | ||
2645 | struct target_rt_sigframe | |
2646 | { | |
2647 | struct target_siginfo info; | |
2648 | struct target_ucontext uc; | |
2649 | uint16_t retcode[3]; | |
2650 | }; | |
2651 | ||
2652 | ||
2653 | #define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */ | |
2654 | #define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */ | |
2655 | ||
624f7979 | 2656 | static abi_ulong get_sigframe(struct target_sigaction *ka, |
c3b5bc8a TS |
2657 | unsigned long sp, size_t frame_size) |
2658 | { | |
624f7979 | 2659 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) { |
c3b5bc8a TS |
2660 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2661 | } | |
2662 | ||
2663 | return (sp - frame_size) & -8ul; | |
2664 | } | |
2665 | ||
2666 | static int setup_sigcontext(struct target_sigcontext *sc, | |
2667 | CPUState *regs, unsigned long mask) | |
2668 | { | |
2669 | int err = 0; | |
2670 | ||
2671 | #define COPY(x) err |= __put_user(regs->x, &sc->sc_##x) | |
2672 | COPY(gregs[0]); COPY(gregs[1]); | |
2673 | COPY(gregs[2]); COPY(gregs[3]); | |
2674 | COPY(gregs[4]); COPY(gregs[5]); | |
2675 | COPY(gregs[6]); COPY(gregs[7]); | |
2676 | COPY(gregs[8]); COPY(gregs[9]); | |
2677 | COPY(gregs[10]); COPY(gregs[11]); | |
2678 | COPY(gregs[12]); COPY(gregs[13]); | |
2679 | COPY(gregs[14]); COPY(gregs[15]); | |
2680 | COPY(gbr); COPY(mach); | |
2681 | COPY(macl); COPY(pr); | |
2682 | COPY(sr); COPY(pc); | |
2683 | #undef COPY | |
2684 | ||
2685 | /* todo: save FPU registers here */ | |
2686 | ||
2687 | /* non-iBCS2 extensions.. */ | |
2688 | err |= __put_user(mask, &sc->oldmask); | |
2689 | ||
2690 | return err; | |
2691 | } | |
2692 | ||
2693 | static int restore_sigcontext(struct CPUState *regs, | |
2694 | struct target_sigcontext *sc) | |
2695 | { | |
2696 | unsigned int err = 0; | |
2697 | ||
2698 | #define COPY(x) err |= __get_user(regs->x, &sc->sc_##x) | |
2699 | COPY(gregs[1]); | |
2700 | COPY(gregs[2]); COPY(gregs[3]); | |
2701 | COPY(gregs[4]); COPY(gregs[5]); | |
2702 | COPY(gregs[6]); COPY(gregs[7]); | |
2703 | COPY(gregs[8]); COPY(gregs[9]); | |
2704 | COPY(gregs[10]); COPY(gregs[11]); | |
2705 | COPY(gregs[12]); COPY(gregs[13]); | |
2706 | COPY(gregs[14]); COPY(gregs[15]); | |
2707 | COPY(gbr); COPY(mach); | |
2708 | COPY(macl); COPY(pr); | |
2709 | COPY(sr); COPY(pc); | |
2710 | #undef COPY | |
2711 | ||
2712 | /* todo: restore FPU registers here */ | |
2713 | ||
2714 | regs->tra = -1; /* disable syscall checks */ | |
2715 | return err; | |
2716 | } | |
2717 | ||
624f7979 | 2718 | static void setup_frame(int sig, struct target_sigaction *ka, |
c3b5bc8a TS |
2719 | target_sigset_t *set, CPUState *regs) |
2720 | { | |
2721 | struct target_sigframe *frame; | |
2722 | abi_ulong frame_addr; | |
2723 | int i; | |
2724 | int err = 0; | |
2725 | int signal; | |
2726 | ||
2727 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
2728 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
2729 | goto give_sigsegv; | |
2730 | ||
2731 | signal = current_exec_domain_sig(sig); | |
2732 | ||
2733 | err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); | |
2734 | ||
2735 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
2736 | err |= __put_user(set->sig[i + 1], &frame->extramask[i]); | |
2737 | } | |
2738 | ||
2739 | /* Set up to return from userspace. If provided, use a stub | |
2740 | already in userspace. */ | |
624f7979 PB |
2741 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
2742 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
2743 | } else { |
2744 | /* Generate return code (system call to sigreturn) */ | |
2745 | err |= __put_user(MOVW(2), &frame->retcode[0]); | |
2746 | err |= __put_user(TRAP_NOARG, &frame->retcode[1]); | |
2747 | err |= __put_user((TARGET_NR_sigreturn), &frame->retcode[2]); | |
2748 | regs->pr = (unsigned long) frame->retcode; | |
2749 | } | |
2750 | ||
2751 | if (err) | |
2752 | goto give_sigsegv; | |
2753 | ||
2754 | /* Set up registers for signal handler */ | |
2755 | regs->gregs[15] = (unsigned long) frame; | |
2756 | regs->gregs[4] = signal; /* Arg for signal handler */ | |
2757 | regs->gregs[5] = 0; | |
2758 | regs->gregs[6] = (unsigned long) &frame->sc; | |
624f7979 | 2759 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
2760 | |
2761 | unlock_user_struct(frame, frame_addr, 1); | |
2762 | return; | |
2763 | ||
2764 | give_sigsegv: | |
2765 | unlock_user_struct(frame, frame_addr, 1); | |
2766 | force_sig(SIGSEGV); | |
2767 | } | |
2768 | ||
624f7979 | 2769 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c3b5bc8a TS |
2770 | target_siginfo_t *info, |
2771 | target_sigset_t *set, CPUState *regs) | |
2772 | { | |
2773 | struct target_rt_sigframe *frame; | |
2774 | abi_ulong frame_addr; | |
2775 | int i; | |
2776 | int err = 0; | |
2777 | int signal; | |
2778 | ||
2779 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
2780 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
2781 | goto give_sigsegv; | |
2782 | ||
2783 | signal = current_exec_domain_sig(sig); | |
2784 | ||
2785 | err |= copy_siginfo_to_user(&frame->info, info); | |
2786 | ||
2787 | /* Create the ucontext. */ | |
2788 | err |= __put_user(0, &frame->uc.uc_flags); | |
2789 | err |= __put_user(0, (unsigned long *)&frame->uc.uc_link); | |
526ccb7a | 2790 | err |= __put_user((unsigned long)target_sigaltstack_used.ss_sp, |
c3b5bc8a TS |
2791 | &frame->uc.uc_stack.ss_sp); |
2792 | err |= __put_user(sas_ss_flags(regs->gregs[15]), | |
2793 | &frame->uc.uc_stack.ss_flags); | |
2794 | err |= __put_user(target_sigaltstack_used.ss_size, | |
2795 | &frame->uc.uc_stack.ss_size); | |
2796 | err |= setup_sigcontext(&frame->uc.uc_mcontext, | |
2797 | regs, set->sig[0]); | |
2798 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
2799 | err |= __put_user(set->sig[i], &frame->uc.uc_sigmask.sig[i]); | |
2800 | } | |
2801 | ||
2802 | /* Set up to return from userspace. If provided, use a stub | |
2803 | already in userspace. */ | |
624f7979 PB |
2804 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
2805 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
2806 | } else { |
2807 | /* Generate return code (system call to sigreturn) */ | |
2808 | err |= __put_user(MOVW(2), &frame->retcode[0]); | |
2809 | err |= __put_user(TRAP_NOARG, &frame->retcode[1]); | |
2810 | err |= __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]); | |
2811 | regs->pr = (unsigned long) frame->retcode; | |
2812 | } | |
2813 | ||
2814 | if (err) | |
2815 | goto give_sigsegv; | |
2816 | ||
2817 | /* Set up registers for signal handler */ | |
2818 | regs->gregs[15] = (unsigned long) frame; | |
2819 | regs->gregs[4] = signal; /* Arg for signal handler */ | |
2820 | regs->gregs[5] = (unsigned long) &frame->info; | |
2821 | regs->gregs[6] = (unsigned long) &frame->uc; | |
624f7979 | 2822 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
2823 | |
2824 | unlock_user_struct(frame, frame_addr, 1); | |
2825 | return; | |
2826 | ||
2827 | give_sigsegv: | |
2828 | unlock_user_struct(frame, frame_addr, 1); | |
2829 | force_sig(SIGSEGV); | |
2830 | } | |
2831 | ||
2832 | long do_sigreturn(CPUState *regs) | |
2833 | { | |
2834 | struct target_sigframe *frame; | |
2835 | abi_ulong frame_addr; | |
2836 | sigset_t blocked; | |
2837 | target_sigset_t target_set; | |
2838 | int i; | |
2839 | int err = 0; | |
2840 | ||
2841 | #if defined(DEBUG_SIGNAL) | |
2842 | fprintf(stderr, "do_sigreturn\n"); | |
2843 | #endif | |
2844 | frame_addr = regs->gregs[15]; | |
2845 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
2846 | goto badframe; | |
2847 | ||
2848 | err |= __get_user(target_set.sig[0], &frame->sc.oldmask); | |
2849 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
2850 | err |= (__get_user(target_set.sig[i], &frame->extramask[i - 1])); | |
2851 | } | |
2852 | ||
2853 | if (err) | |
2854 | goto badframe; | |
2855 | ||
2856 | target_to_host_sigset_internal(&blocked, &target_set); | |
2857 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
2858 | ||
2859 | if (restore_sigcontext(regs, &frame->sc)) | |
2860 | goto badframe; | |
2861 | ||
2862 | unlock_user_struct(frame, frame_addr, 0); | |
2863 | return regs->gregs[0]; | |
2864 | ||
2865 | badframe: | |
2866 | unlock_user_struct(frame, frame_addr, 0); | |
2867 | force_sig(TARGET_SIGSEGV); | |
2868 | return 0; | |
2869 | } | |
2870 | ||
2871 | long do_rt_sigreturn(CPUState *regs) | |
2872 | { | |
2873 | struct target_rt_sigframe *frame; | |
2874 | abi_ulong frame_addr; | |
2875 | sigset_t blocked; | |
2876 | ||
2877 | #if defined(DEBUG_SIGNAL) | |
2878 | fprintf(stderr, "do_rt_sigreturn\n"); | |
2879 | #endif | |
2880 | frame_addr = regs->gregs[15]; | |
2881 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
2882 | goto badframe; | |
2883 | ||
2884 | target_to_host_sigset(&blocked, &frame->uc.uc_sigmask); | |
2885 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
2886 | ||
2887 | if (restore_sigcontext(regs, &frame->uc.uc_mcontext)) | |
2888 | goto badframe; | |
2889 | ||
2890 | if (do_sigaltstack(frame_addr + | |
2891 | offsetof(struct target_rt_sigframe, uc.uc_stack), | |
2892 | 0, get_sp_from_cpustate(regs)) == -EFAULT) | |
2893 | goto badframe; | |
2894 | ||
2895 | unlock_user_struct(frame, frame_addr, 0); | |
2896 | return regs->gregs[0]; | |
2897 | ||
2898 | badframe: | |
2899 | unlock_user_struct(frame, frame_addr, 0); | |
2900 | force_sig(TARGET_SIGSEGV); | |
2901 | return 0; | |
2902 | } | |
b6d3abda EI |
2903 | #elif defined(TARGET_CRIS) |
2904 | ||
2905 | struct target_sigcontext { | |
2906 | struct target_pt_regs regs; /* needs to be first */ | |
2907 | uint32_t oldmask; | |
2908 | uint32_t usp; /* usp before stacking this gunk on it */ | |
2909 | }; | |
2910 | ||
2911 | /* Signal frames. */ | |
2912 | struct target_signal_frame { | |
2913 | struct target_sigcontext sc; | |
2914 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; | |
2915 | uint8_t retcode[8]; /* Trampoline code. */ | |
2916 | }; | |
2917 | ||
2918 | struct rt_signal_frame { | |
2919 | struct siginfo *pinfo; | |
2920 | void *puc; | |
2921 | struct siginfo info; | |
2922 | struct ucontext uc; | |
2923 | uint8_t retcode[8]; /* Trampoline code. */ | |
2924 | }; | |
2925 | ||
2926 | static void setup_sigcontext(struct target_sigcontext *sc, CPUState *env) | |
2927 | { | |
9664d928 EI |
2928 | __put_user(env->regs[0], &sc->regs.r0); |
2929 | __put_user(env->regs[1], &sc->regs.r1); | |
2930 | __put_user(env->regs[2], &sc->regs.r2); | |
2931 | __put_user(env->regs[3], &sc->regs.r3); | |
2932 | __put_user(env->regs[4], &sc->regs.r4); | |
2933 | __put_user(env->regs[5], &sc->regs.r5); | |
2934 | __put_user(env->regs[6], &sc->regs.r6); | |
2935 | __put_user(env->regs[7], &sc->regs.r7); | |
2936 | __put_user(env->regs[8], &sc->regs.r8); | |
2937 | __put_user(env->regs[9], &sc->regs.r9); | |
2938 | __put_user(env->regs[10], &sc->regs.r10); | |
2939 | __put_user(env->regs[11], &sc->regs.r11); | |
2940 | __put_user(env->regs[12], &sc->regs.r12); | |
2941 | __put_user(env->regs[13], &sc->regs.r13); | |
2942 | __put_user(env->regs[14], &sc->usp); | |
2943 | __put_user(env->regs[15], &sc->regs.acr); | |
2944 | __put_user(env->pregs[PR_MOF], &sc->regs.mof); | |
2945 | __put_user(env->pregs[PR_SRP], &sc->regs.srp); | |
2946 | __put_user(env->pc, &sc->regs.erp); | |
b6d3abda | 2947 | } |
9664d928 | 2948 | |
b6d3abda EI |
2949 | static void restore_sigcontext(struct target_sigcontext *sc, CPUState *env) |
2950 | { | |
9664d928 EI |
2951 | __get_user(env->regs[0], &sc->regs.r0); |
2952 | __get_user(env->regs[1], &sc->regs.r1); | |
2953 | __get_user(env->regs[2], &sc->regs.r2); | |
2954 | __get_user(env->regs[3], &sc->regs.r3); | |
2955 | __get_user(env->regs[4], &sc->regs.r4); | |
2956 | __get_user(env->regs[5], &sc->regs.r5); | |
2957 | __get_user(env->regs[6], &sc->regs.r6); | |
2958 | __get_user(env->regs[7], &sc->regs.r7); | |
2959 | __get_user(env->regs[8], &sc->regs.r8); | |
2960 | __get_user(env->regs[9], &sc->regs.r9); | |
2961 | __get_user(env->regs[10], &sc->regs.r10); | |
2962 | __get_user(env->regs[11], &sc->regs.r11); | |
2963 | __get_user(env->regs[12], &sc->regs.r12); | |
2964 | __get_user(env->regs[13], &sc->regs.r13); | |
2965 | __get_user(env->regs[14], &sc->usp); | |
2966 | __get_user(env->regs[15], &sc->regs.acr); | |
2967 | __get_user(env->pregs[PR_MOF], &sc->regs.mof); | |
2968 | __get_user(env->pregs[PR_SRP], &sc->regs.srp); | |
2969 | __get_user(env->pc, &sc->regs.erp); | |
2970 | } | |
2971 | ||
2972 | static abi_ulong get_sigframe(CPUState *env, int framesize) | |
2973 | { | |
2974 | abi_ulong sp; | |
b6d3abda | 2975 | /* Align the stack downwards to 4. */ |
9664d928 EI |
2976 | sp = (env->regs[R_SP] & ~3); |
2977 | return sp - framesize; | |
b6d3abda EI |
2978 | } |
2979 | ||
624f7979 | 2980 | static void setup_frame(int sig, struct target_sigaction *ka, |
b6d3abda EI |
2981 | target_sigset_t *set, CPUState *env) |
2982 | { | |
2983 | struct target_signal_frame *frame; | |
9664d928 | 2984 | abi_ulong frame_addr; |
b6d3abda EI |
2985 | int err = 0; |
2986 | int i; | |
b6d3abda | 2987 | |
9664d928 EI |
2988 | frame_addr = get_sigframe(env, sizeof *frame); |
2989 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
b6d3abda EI |
2990 | goto badframe; |
2991 | ||
2992 | /* | |
2993 | * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't | |
2994 | * use this trampoline anymore but it sets it up for GDB. | |
2995 | * In QEMU, using the trampoline simplifies things a bit so we use it. | |
2996 | * | |
2997 | * This is movu.w __NR_sigreturn, r9; break 13; | |
2998 | */ | |
2999 | err |= __put_user(0x9c5f, frame->retcode+0); | |
3000 | err |= __put_user(TARGET_NR_sigreturn, | |
3001 | frame->retcode+2); | |
3002 | err |= __put_user(0xe93d, frame->retcode+4); | |
3003 | ||
3004 | /* Save the mask. */ | |
3005 | err |= __put_user(set->sig[0], &frame->sc.oldmask); | |
3006 | if (err) | |
3007 | goto badframe; | |
3008 | ||
3009 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3010 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
3011 | goto badframe; | |
3012 | } | |
3013 | ||
3014 | setup_sigcontext(&frame->sc, env); | |
3015 | ||
3016 | /* Move the stack and setup the arguments for the handler. */ | |
526ccb7a | 3017 | env->regs[R_SP] = (uint32_t) (unsigned long) frame; |
b6d3abda | 3018 | env->regs[10] = sig; |
624f7979 | 3019 | env->pc = (unsigned long) ka->_sa_handler; |
b6d3abda | 3020 | /* Link SRP so the guest returns through the trampoline. */ |
526ccb7a | 3021 | env->pregs[PR_SRP] = (uint32_t) (unsigned long) &frame->retcode[0]; |
b6d3abda | 3022 | |
9664d928 | 3023 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
3024 | return; |
3025 | badframe: | |
9664d928 | 3026 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
3027 | force_sig(TARGET_SIGSEGV); |
3028 | } | |
3029 | ||
624f7979 | 3030 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
b6d3abda EI |
3031 | target_siginfo_t *info, |
3032 | target_sigset_t *set, CPUState *env) | |
3033 | { | |
3034 | fprintf(stderr, "CRIS setup_rt_frame: not implemented\n"); | |
3035 | } | |
3036 | ||
3037 | long do_sigreturn(CPUState *env) | |
3038 | { | |
3039 | struct target_signal_frame *frame; | |
9664d928 | 3040 | abi_ulong frame_addr; |
b6d3abda EI |
3041 | target_sigset_t target_set; |
3042 | sigset_t set; | |
3043 | int i; | |
3044 | ||
9664d928 | 3045 | frame_addr = env->regs[R_SP]; |
b6d3abda | 3046 | /* Make sure the guest isn't playing games. */ |
9664d928 | 3047 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
b6d3abda EI |
3048 | goto badframe; |
3049 | ||
3050 | /* Restore blocked signals */ | |
3051 | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) | |
3052 | goto badframe; | |
3053 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3054 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
3055 | goto badframe; | |
3056 | } | |
3057 | target_to_host_sigset_internal(&set, &target_set); | |
3058 | sigprocmask(SIG_SETMASK, &set, NULL); | |
3059 | ||
3060 | restore_sigcontext(&frame->sc, env); | |
9664d928 | 3061 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3062 | return env->regs[10]; |
3063 | badframe: | |
9664d928 | 3064 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3065 | force_sig(TARGET_SIGSEGV); |
3066 | } | |
3067 | ||
3068 | long do_rt_sigreturn(CPUState *env) | |
3069 | { | |
3070 | fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n"); | |
3071 | return -TARGET_ENOSYS; | |
3072 | } | |
c3b5bc8a | 3073 | |
b346ff46 FB |
3074 | #else |
3075 | ||
624f7979 | 3076 | static void setup_frame(int sig, struct target_sigaction *ka, |
b346ff46 FB |
3077 | target_sigset_t *set, CPUState *env) |
3078 | { | |
3079 | fprintf(stderr, "setup_frame: not implemented\n"); | |
3080 | } | |
3081 | ||
624f7979 | 3082 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
b346ff46 FB |
3083 | target_siginfo_t *info, |
3084 | target_sigset_t *set, CPUState *env) | |
3085 | { | |
3086 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
3087 | } | |
3088 | ||
3089 | long do_sigreturn(CPUState *env) | |
3090 | { | |
3091 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 3092 | return -TARGET_ENOSYS; |
b346ff46 FB |
3093 | } |
3094 | ||
3095 | long do_rt_sigreturn(CPUState *env) | |
3096 | { | |
3097 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 3098 | return -TARGET_ENOSYS; |
b346ff46 FB |
3099 | } |
3100 | ||
66fb9763 FB |
3101 | #endif |
3102 | ||
624f7979 | 3103 | void process_pending_signals(CPUState *cpu_env) |
66fb9763 FB |
3104 | { |
3105 | int sig; | |
992f48a0 | 3106 | abi_ulong handler; |
9de5e440 FB |
3107 | sigset_t set, old_set; |
3108 | target_sigset_t target_old_set; | |
624f7979 PB |
3109 | struct emulated_sigtable *k; |
3110 | struct target_sigaction *sa; | |
66fb9763 | 3111 | struct sigqueue *q; |
624f7979 | 3112 | TaskState *ts = cpu_env->opaque; |
3b46e624 | 3113 | |
624f7979 | 3114 | if (!ts->signal_pending) |
31e31b8a FB |
3115 | return; |
3116 | ||
624f7979 PB |
3117 | /* FIXME: This is not threadsafe. */ |
3118 | k = ts->sigtab; | |
66fb9763 FB |
3119 | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
3120 | if (k->pending) | |
31e31b8a | 3121 | goto handle_signal; |
66fb9763 | 3122 | k++; |
31e31b8a FB |
3123 | } |
3124 | /* if no signal is pending, just return */ | |
624f7979 | 3125 | ts->signal_pending = 0; |
31e31b8a | 3126 | return; |
66fb9763 | 3127 | |
31e31b8a | 3128 | handle_signal: |
66fb9763 | 3129 | #ifdef DEBUG_SIGNAL |
bc8a22cc | 3130 | fprintf(stderr, "qemu: process signal %d\n", sig); |
66fb9763 FB |
3131 | #endif |
3132 | /* dequeue signal */ | |
3133 | q = k->first; | |
3134 | k->first = q->next; | |
3135 | if (!k->first) | |
3136 | k->pending = 0; | |
3b46e624 | 3137 | |
1fddef4b FB |
3138 | sig = gdb_handlesig (cpu_env, sig); |
3139 | if (!sig) { | |
ca587a8e AJ |
3140 | sa = NULL; |
3141 | handler = TARGET_SIG_IGN; | |
3142 | } else { | |
3143 | sa = &sigact_table[sig - 1]; | |
3144 | handler = sa->_sa_handler; | |
1fddef4b | 3145 | } |
66fb9763 | 3146 | |
66fb9763 | 3147 | if (handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
3148 | /* default handler : ignore some signal. The other are job control or fatal */ |
3149 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { | |
3150 | kill(getpid(),SIGSTOP); | |
3151 | } else if (sig != TARGET_SIGCHLD && | |
3152 | sig != TARGET_SIGURG && | |
3153 | sig != TARGET_SIGWINCH && | |
3154 | sig != TARGET_SIGCONT) { | |
66fb9763 FB |
3155 | force_sig(sig); |
3156 | } | |
3157 | } else if (handler == TARGET_SIG_IGN) { | |
3158 | /* ignore sig */ | |
3159 | } else if (handler == TARGET_SIG_ERR) { | |
3160 | force_sig(sig); | |
3161 | } else { | |
9de5e440 | 3162 | /* compute the blocked signals during the handler execution */ |
624f7979 | 3163 | target_to_host_sigset(&set, &sa->sa_mask); |
9de5e440 FB |
3164 | /* SA_NODEFER indicates that the current signal should not be |
3165 | blocked during the handler */ | |
624f7979 | 3166 | if (!(sa->sa_flags & TARGET_SA_NODEFER)) |
9de5e440 | 3167 | sigaddset(&set, target_to_host_signal(sig)); |
3b46e624 | 3168 | |
9de5e440 FB |
3169 | /* block signals in the handler using Linux */ |
3170 | sigprocmask(SIG_BLOCK, &set, &old_set); | |
3171 | /* save the previous blocked signal state to restore it at the | |
3172 | end of the signal execution (see do_sigreturn) */ | |
9231944d | 3173 | host_to_target_sigset_internal(&target_old_set, &old_set); |
9de5e440 | 3174 | |
bc8a22cc | 3175 | /* if the CPU is in VM86 mode, we restore the 32 bit values */ |
84409ddb | 3176 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
bc8a22cc FB |
3177 | { |
3178 | CPUX86State *env = cpu_env; | |
3179 | if (env->eflags & VM_MASK) | |
3180 | save_v86_state(env); | |
3181 | } | |
3182 | #endif | |
9de5e440 | 3183 | /* prepare the stack frame of the virtual CPU */ |
624f7979 PB |
3184 | if (sa->sa_flags & TARGET_SA_SIGINFO) |
3185 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
66fb9763 | 3186 | else |
624f7979 PB |
3187 | setup_frame(sig, sa, &target_old_set, cpu_env); |
3188 | if (sa->sa_flags & TARGET_SA_RESETHAND) | |
3189 | sa->_sa_handler = TARGET_SIG_DFL; | |
31e31b8a | 3190 | } |
66fb9763 | 3191 | if (q != &k->info) |
624f7979 | 3192 | free_sigqueue(cpu_env, q); |
66fb9763 | 3193 | } |