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Commit | Line | Data |
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31e31b8a | 1 | /* |
66fb9763 | 2 | * Emulation of Linux signals |
5fafdf24 | 3 | * |
31e31b8a FB |
4 | * Copyright (c) 2003 Fabrice Bellard |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
8167ee88 | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
31e31b8a FB |
18 | */ |
19 | #include <stdlib.h> | |
20 | #include <stdio.h> | |
66fb9763 | 21 | #include <string.h> |
31e31b8a | 22 | #include <stdarg.h> |
2677e107 | 23 | #include <unistd.h> |
31e31b8a | 24 | #include <signal.h> |
66fb9763 | 25 | #include <errno.h> |
603e4fd7 | 26 | #include <assert.h> |
31e31b8a | 27 | #include <sys/ucontext.h> |
edf8e2af | 28 | #include <sys/resource.h> |
31e31b8a | 29 | |
3ef693a0 | 30 | #include "qemu.h" |
7d99a001 | 31 | #include "qemu-common.h" |
992f48a0 | 32 | #include "target_signal.h" |
66fb9763 FB |
33 | |
34 | //#define DEBUG_SIGNAL | |
35 | ||
249c4c32 | 36 | static struct target_sigaltstack target_sigaltstack_used = { |
a04e134a TS |
37 | .ss_sp = 0, |
38 | .ss_size = 0, | |
39 | .ss_flags = TARGET_SS_DISABLE, | |
40 | }; | |
41 | ||
624f7979 | 42 | static struct target_sigaction sigact_table[TARGET_NSIG]; |
31e31b8a | 43 | |
5fafdf24 | 44 | static void host_signal_handler(int host_signum, siginfo_t *info, |
66fb9763 FB |
45 | void *puc); |
46 | ||
3ca05588 | 47 | static uint8_t host_to_target_signal_table[_NSIG] = { |
9e5f5284 FB |
48 | [SIGHUP] = TARGET_SIGHUP, |
49 | [SIGINT] = TARGET_SIGINT, | |
50 | [SIGQUIT] = TARGET_SIGQUIT, | |
51 | [SIGILL] = TARGET_SIGILL, | |
52 | [SIGTRAP] = TARGET_SIGTRAP, | |
53 | [SIGABRT] = TARGET_SIGABRT, | |
01e3b763 | 54 | /* [SIGIOT] = TARGET_SIGIOT,*/ |
9e5f5284 FB |
55 | [SIGBUS] = TARGET_SIGBUS, |
56 | [SIGFPE] = TARGET_SIGFPE, | |
57 | [SIGKILL] = TARGET_SIGKILL, | |
58 | [SIGUSR1] = TARGET_SIGUSR1, | |
59 | [SIGSEGV] = TARGET_SIGSEGV, | |
60 | [SIGUSR2] = TARGET_SIGUSR2, | |
61 | [SIGPIPE] = TARGET_SIGPIPE, | |
62 | [SIGALRM] = TARGET_SIGALRM, | |
63 | [SIGTERM] = TARGET_SIGTERM, | |
64 | #ifdef SIGSTKFLT | |
65 | [SIGSTKFLT] = TARGET_SIGSTKFLT, | |
66 | #endif | |
67 | [SIGCHLD] = TARGET_SIGCHLD, | |
68 | [SIGCONT] = TARGET_SIGCONT, | |
69 | [SIGSTOP] = TARGET_SIGSTOP, | |
70 | [SIGTSTP] = TARGET_SIGTSTP, | |
71 | [SIGTTIN] = TARGET_SIGTTIN, | |
72 | [SIGTTOU] = TARGET_SIGTTOU, | |
73 | [SIGURG] = TARGET_SIGURG, | |
74 | [SIGXCPU] = TARGET_SIGXCPU, | |
75 | [SIGXFSZ] = TARGET_SIGXFSZ, | |
76 | [SIGVTALRM] = TARGET_SIGVTALRM, | |
77 | [SIGPROF] = TARGET_SIGPROF, | |
78 | [SIGWINCH] = TARGET_SIGWINCH, | |
79 | [SIGIO] = TARGET_SIGIO, | |
80 | [SIGPWR] = TARGET_SIGPWR, | |
81 | [SIGSYS] = TARGET_SIGSYS, | |
82 | /* next signals stay the same */ | |
624f7979 PB |
83 | /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with |
84 | host libpthread signals. This assumes noone actually uses SIGRTMAX :-/ | |
85 | To fix this properly we need to do manual signal delivery multiplexed | |
86 | over a single host signal. */ | |
87 | [__SIGRTMIN] = __SIGRTMAX, | |
88 | [__SIGRTMAX] = __SIGRTMIN, | |
9e5f5284 | 89 | }; |
3ca05588 | 90 | static uint8_t target_to_host_signal_table[_NSIG]; |
9e5f5284 | 91 | |
a04e134a TS |
92 | static inline int on_sig_stack(unsigned long sp) |
93 | { | |
94 | return (sp - target_sigaltstack_used.ss_sp | |
95 | < target_sigaltstack_used.ss_size); | |
96 | } | |
97 | ||
98 | static inline int sas_ss_flags(unsigned long sp) | |
99 | { | |
100 | return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE | |
101 | : on_sig_stack(sp) ? SS_ONSTACK : 0); | |
102 | } | |
103 | ||
1d9d8b55 | 104 | int host_to_target_signal(int sig) |
31e31b8a | 105 | { |
3ca05588 | 106 | if (sig >= _NSIG) |
4cb05961 | 107 | return sig; |
9e5f5284 | 108 | return host_to_target_signal_table[sig]; |
31e31b8a FB |
109 | } |
110 | ||
4cb05961 | 111 | int target_to_host_signal(int sig) |
31e31b8a | 112 | { |
3ca05588 | 113 | if (sig >= _NSIG) |
4cb05961 | 114 | return sig; |
9e5f5284 | 115 | return target_to_host_signal_table[sig]; |
31e31b8a FB |
116 | } |
117 | ||
c227f099 | 118 | static inline void target_sigemptyset(target_sigset_t *set) |
f5545b5c PB |
119 | { |
120 | memset(set, 0, sizeof(*set)); | |
121 | } | |
122 | ||
c227f099 | 123 | static inline void target_sigaddset(target_sigset_t *set, int signum) |
f5545b5c PB |
124 | { |
125 | signum--; | |
126 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
127 | set->sig[signum / TARGET_NSIG_BPW] |= mask; | |
128 | } | |
129 | ||
c227f099 | 130 | static inline int target_sigismember(const target_sigset_t *set, int signum) |
f5545b5c PB |
131 | { |
132 | signum--; | |
133 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
134 | return ((set->sig[signum / TARGET_NSIG_BPW] & mask) != 0); | |
135 | } | |
136 | ||
c227f099 | 137 | static void host_to_target_sigset_internal(target_sigset_t *d, |
9231944d | 138 | const sigset_t *s) |
66fb9763 FB |
139 | { |
140 | int i; | |
f5545b5c PB |
141 | target_sigemptyset(d); |
142 | for (i = 1; i <= TARGET_NSIG; i++) { | |
143 | if (sigismember(s, i)) { | |
144 | target_sigaddset(d, host_to_target_signal(i)); | |
145 | } | |
66fb9763 FB |
146 | } |
147 | } | |
148 | ||
c227f099 | 149 | void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) |
9231944d | 150 | { |
c227f099 | 151 | target_sigset_t d1; |
9231944d FB |
152 | int i; |
153 | ||
154 | host_to_target_sigset_internal(&d1, s); | |
155 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
53a5960a | 156 | d->sig[i] = tswapl(d1.sig[i]); |
9231944d FB |
157 | } |
158 | ||
8fcd3692 | 159 | static void target_to_host_sigset_internal(sigset_t *d, |
c227f099 | 160 | const target_sigset_t *s) |
66fb9763 FB |
161 | { |
162 | int i; | |
f5545b5c PB |
163 | sigemptyset(d); |
164 | for (i = 1; i <= TARGET_NSIG; i++) { | |
165 | if (target_sigismember(s, i)) { | |
166 | sigaddset(d, target_to_host_signal(i)); | |
167 | } | |
168 | } | |
66fb9763 FB |
169 | } |
170 | ||
c227f099 | 171 | void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) |
9231944d | 172 | { |
c227f099 | 173 | target_sigset_t s1; |
9231944d FB |
174 | int i; |
175 | ||
176 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
53a5960a | 177 | s1.sig[i] = tswapl(s->sig[i]); |
9231944d FB |
178 | target_to_host_sigset_internal(d, &s1); |
179 | } | |
3b46e624 | 180 | |
992f48a0 | 181 | void host_to_target_old_sigset(abi_ulong *old_sigset, |
66fb9763 FB |
182 | const sigset_t *sigset) |
183 | { | |
c227f099 | 184 | target_sigset_t d; |
9e5f5284 FB |
185 | host_to_target_sigset(&d, sigset); |
186 | *old_sigset = d.sig[0]; | |
66fb9763 FB |
187 | } |
188 | ||
5fafdf24 | 189 | void target_to_host_old_sigset(sigset_t *sigset, |
992f48a0 | 190 | const abi_ulong *old_sigset) |
66fb9763 | 191 | { |
c227f099 | 192 | target_sigset_t d; |
9e5f5284 FB |
193 | int i; |
194 | ||
195 | d.sig[0] = *old_sigset; | |
196 | for(i = 1;i < TARGET_NSIG_WORDS; i++) | |
197 | d.sig[i] = 0; | |
198 | target_to_host_sigset(sigset, &d); | |
66fb9763 FB |
199 | } |
200 | ||
9de5e440 FB |
201 | /* siginfo conversion */ |
202 | ||
c227f099 | 203 | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
9de5e440 | 204 | const siginfo_t *info) |
66fb9763 | 205 | { |
9de5e440 FB |
206 | int sig; |
207 | sig = host_to_target_signal(info->si_signo); | |
208 | tinfo->si_signo = sig; | |
209 | tinfo->si_errno = 0; | |
afd7cd92 | 210 | tinfo->si_code = info->si_code; |
5fafdf24 | 211 | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV || |
447db213 | 212 | sig == SIGBUS || sig == SIGTRAP) { |
9de5e440 FB |
213 | /* should never come here, but who knows. The information for |
214 | the target is irrelevant */ | |
215 | tinfo->_sifields._sigfault._addr = 0; | |
7f7f7c84 TS |
216 | } else if (sig == SIGIO) { |
217 | tinfo->_sifields._sigpoll._fd = info->si_fd; | |
9de5e440 FB |
218 | } else if (sig >= TARGET_SIGRTMIN) { |
219 | tinfo->_sifields._rt._pid = info->si_pid; | |
220 | tinfo->_sifields._rt._uid = info->si_uid; | |
221 | /* XXX: potential problem if 64 bit */ | |
5fafdf24 | 222 | tinfo->_sifields._rt._sigval.sival_ptr = |
459a4017 | 223 | (abi_ulong)(unsigned long)info->si_value.sival_ptr; |
9de5e440 FB |
224 | } |
225 | } | |
226 | ||
c227f099 AL |
227 | static void tswap_siginfo(target_siginfo_t *tinfo, |
228 | const target_siginfo_t *info) | |
9de5e440 FB |
229 | { |
230 | int sig; | |
231 | sig = info->si_signo; | |
232 | tinfo->si_signo = tswap32(sig); | |
66fb9763 FB |
233 | tinfo->si_errno = tswap32(info->si_errno); |
234 | tinfo->si_code = tswap32(info->si_code); | |
5fafdf24 | 235 | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV || |
447db213 | 236 | sig == SIGBUS || sig == SIGTRAP) { |
5fafdf24 | 237 | tinfo->_sifields._sigfault._addr = |
9de5e440 | 238 | tswapl(info->_sifields._sigfault._addr); |
7f7f7c84 TS |
239 | } else if (sig == SIGIO) { |
240 | tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd); | |
9de5e440 FB |
241 | } else if (sig >= TARGET_SIGRTMIN) { |
242 | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); | |
243 | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); | |
5fafdf24 | 244 | tinfo->_sifields._rt._sigval.sival_ptr = |
9de5e440 FB |
245 | tswapl(info->_sifields._rt._sigval.sival_ptr); |
246 | } | |
247 | } | |
248 | ||
249 | ||
c227f099 | 250 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) |
9de5e440 FB |
251 | { |
252 | host_to_target_siginfo_noswap(tinfo, info); | |
253 | tswap_siginfo(tinfo, tinfo); | |
66fb9763 FB |
254 | } |
255 | ||
9de5e440 | 256 | /* XXX: we support only POSIX RT signals are used. */ |
aa1f17c1 | 257 | /* XXX: find a solution for 64 bit (additional malloced data is needed) */ |
c227f099 | 258 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
66fb9763 FB |
259 | { |
260 | info->si_signo = tswap32(tinfo->si_signo); | |
261 | info->si_errno = tswap32(tinfo->si_errno); | |
262 | info->si_code = tswap32(tinfo->si_code); | |
9de5e440 FB |
263 | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
264 | info->si_uid = tswap32(tinfo->_sifields._rt._uid); | |
5fafdf24 | 265 | info->si_value.sival_ptr = |
459a4017 | 266 | (void *)(long)tswapl(tinfo->_sifields._rt._sigval.sival_ptr); |
66fb9763 FB |
267 | } |
268 | ||
ca587a8e AJ |
269 | static int fatal_signal (int sig) |
270 | { | |
271 | switch (sig) { | |
272 | case TARGET_SIGCHLD: | |
273 | case TARGET_SIGURG: | |
274 | case TARGET_SIGWINCH: | |
275 | /* Ignored by default. */ | |
276 | return 0; | |
277 | case TARGET_SIGCONT: | |
278 | case TARGET_SIGSTOP: | |
279 | case TARGET_SIGTSTP: | |
280 | case TARGET_SIGTTIN: | |
281 | case TARGET_SIGTTOU: | |
282 | /* Job control signals. */ | |
283 | return 0; | |
284 | default: | |
285 | return 1; | |
286 | } | |
287 | } | |
288 | ||
edf8e2af MW |
289 | /* returns 1 if given signal should dump core if not handled */ |
290 | static int core_dump_signal(int sig) | |
291 | { | |
292 | switch (sig) { | |
293 | case TARGET_SIGABRT: | |
294 | case TARGET_SIGFPE: | |
295 | case TARGET_SIGILL: | |
296 | case TARGET_SIGQUIT: | |
297 | case TARGET_SIGSEGV: | |
298 | case TARGET_SIGTRAP: | |
299 | case TARGET_SIGBUS: | |
300 | return (1); | |
301 | default: | |
302 | return (0); | |
303 | } | |
304 | } | |
305 | ||
31e31b8a FB |
306 | void signal_init(void) |
307 | { | |
308 | struct sigaction act; | |
624f7979 | 309 | struct sigaction oact; |
9e5f5284 | 310 | int i, j; |
624f7979 | 311 | int host_sig; |
31e31b8a | 312 | |
9e5f5284 | 313 | /* generate signal conversion tables */ |
3ca05588 | 314 | for(i = 1; i < _NSIG; i++) { |
9e5f5284 FB |
315 | if (host_to_target_signal_table[i] == 0) |
316 | host_to_target_signal_table[i] = i; | |
317 | } | |
3ca05588 | 318 | for(i = 1; i < _NSIG; i++) { |
9e5f5284 FB |
319 | j = host_to_target_signal_table[i]; |
320 | target_to_host_signal_table[j] = i; | |
321 | } | |
3b46e624 | 322 | |
9de5e440 FB |
323 | /* set all host signal handlers. ALL signals are blocked during |
324 | the handlers to serialize them. */ | |
624f7979 PB |
325 | memset(sigact_table, 0, sizeof(sigact_table)); |
326 | ||
9de5e440 | 327 | sigfillset(&act.sa_mask); |
31e31b8a FB |
328 | act.sa_flags = SA_SIGINFO; |
329 | act.sa_sigaction = host_signal_handler; | |
624f7979 PB |
330 | for(i = 1; i <= TARGET_NSIG; i++) { |
331 | host_sig = target_to_host_signal(i); | |
332 | sigaction(host_sig, NULL, &oact); | |
333 | if (oact.sa_sigaction == (void *)SIG_IGN) { | |
334 | sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN; | |
335 | } else if (oact.sa_sigaction == (void *)SIG_DFL) { | |
336 | sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL; | |
337 | } | |
338 | /* If there's already a handler installed then something has | |
339 | gone horribly wrong, so don't even try to handle that case. */ | |
ca587a8e AJ |
340 | /* Install some handlers for our own use. We need at least |
341 | SIGSEGV and SIGBUS, to detect exceptions. We can not just | |
342 | trap all signals because it affects syscall interrupt | |
343 | behavior. But do trap all default-fatal signals. */ | |
344 | if (fatal_signal (i)) | |
624f7979 | 345 | sigaction(host_sig, &act, NULL); |
31e31b8a | 346 | } |
66fb9763 FB |
347 | } |
348 | ||
349 | /* signal queue handling */ | |
350 | ||
624f7979 | 351 | static inline struct sigqueue *alloc_sigqueue(CPUState *env) |
66fb9763 | 352 | { |
624f7979 PB |
353 | TaskState *ts = env->opaque; |
354 | struct sigqueue *q = ts->first_free; | |
66fb9763 FB |
355 | if (!q) |
356 | return NULL; | |
624f7979 | 357 | ts->first_free = q->next; |
66fb9763 | 358 | return q; |
31e31b8a FB |
359 | } |
360 | ||
624f7979 | 361 | static inline void free_sigqueue(CPUState *env, struct sigqueue *q) |
66fb9763 | 362 | { |
624f7979 PB |
363 | TaskState *ts = env->opaque; |
364 | q->next = ts->first_free; | |
365 | ts->first_free = q; | |
66fb9763 FB |
366 | } |
367 | ||
9de5e440 | 368 | /* abort execution with signal */ |
66393fb9 | 369 | static void QEMU_NORETURN force_sig(int target_sig) |
66fb9763 | 370 | { |
edf8e2af MW |
371 | TaskState *ts = (TaskState *)thread_env->opaque; |
372 | int host_sig, core_dumped = 0; | |
603e4fd7 | 373 | struct sigaction act; |
66393fb9 RV |
374 | host_sig = target_to_host_signal(target_sig); |
375 | gdb_signalled(thread_env, target_sig); | |
603e4fd7 | 376 | |
edf8e2af | 377 | /* dump core if supported by target binary format */ |
66393fb9 | 378 | if (core_dump_signal(target_sig) && (ts->bprm->core_dump != NULL)) { |
edf8e2af MW |
379 | stop_all_tasks(); |
380 | core_dumped = | |
66393fb9 | 381 | ((*ts->bprm->core_dump)(target_sig, thread_env) == 0); |
edf8e2af MW |
382 | } |
383 | if (core_dumped) { | |
384 | /* we already dumped the core of target process, we don't want | |
385 | * a coredump of qemu itself */ | |
386 | struct rlimit nodump; | |
387 | getrlimit(RLIMIT_CORE, &nodump); | |
388 | nodump.rlim_cur=0; | |
389 | setrlimit(RLIMIT_CORE, &nodump); | |
390 | (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n", | |
66393fb9 | 391 | target_sig, strsignal(host_sig), "core dumped" ); |
edf8e2af MW |
392 | } |
393 | ||
603e4fd7 AJ |
394 | /* The proper exit code for dieing from an uncaught signal is |
395 | * -<signal>. The kernel doesn't allow exit() or _exit() to pass | |
396 | * a negative value. To get the proper exit code we need to | |
397 | * actually die from an uncaught signal. Here the default signal | |
398 | * handler is installed, we send ourself a signal and we wait for | |
399 | * it to arrive. */ | |
400 | sigfillset(&act.sa_mask); | |
401 | act.sa_handler = SIG_DFL; | |
402 | sigaction(host_sig, &act, NULL); | |
403 | ||
404 | /* For some reason raise(host_sig) doesn't send the signal when | |
405 | * statically linked on x86-64. */ | |
406 | kill(getpid(), host_sig); | |
407 | ||
408 | /* Make sure the signal isn't masked (just reuse the mask inside | |
409 | of act) */ | |
410 | sigdelset(&act.sa_mask, host_sig); | |
411 | sigsuspend(&act.sa_mask); | |
412 | ||
413 | /* unreachable */ | |
a6c6f76c | 414 | abort(); |
66fb9763 FB |
415 | } |
416 | ||
9de5e440 FB |
417 | /* queue a signal so that it will be send to the virtual CPU as soon |
418 | as possible */ | |
c227f099 | 419 | int queue_signal(CPUState *env, int sig, target_siginfo_t *info) |
31e31b8a | 420 | { |
624f7979 PB |
421 | TaskState *ts = env->opaque; |
422 | struct emulated_sigtable *k; | |
9de5e440 | 423 | struct sigqueue *q, **pq; |
992f48a0 | 424 | abi_ulong handler; |
ca587a8e | 425 | int queue; |
66fb9763 | 426 | |
9de5e440 | 427 | #if defined(DEBUG_SIGNAL) |
5fafdf24 | 428 | fprintf(stderr, "queue_signal: sig=%d\n", |
9de5e440 | 429 | sig); |
66fb9763 | 430 | #endif |
624f7979 | 431 | k = &ts->sigtab[sig - 1]; |
ca587a8e | 432 | queue = gdb_queuesig (); |
624f7979 | 433 | handler = sigact_table[sig - 1]._sa_handler; |
ca587a8e | 434 | if (!queue && handler == TARGET_SIG_DFL) { |
60b19691 TS |
435 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { |
436 | kill(getpid(),SIGSTOP); | |
437 | return 0; | |
438 | } else | |
66fb9763 | 439 | /* default handler : ignore some signal. The other are fatal */ |
5fafdf24 TS |
440 | if (sig != TARGET_SIGCHLD && |
441 | sig != TARGET_SIGURG && | |
60b19691 TS |
442 | sig != TARGET_SIGWINCH && |
443 | sig != TARGET_SIGCONT) { | |
66fb9763 | 444 | force_sig(sig); |
9de5e440 FB |
445 | } else { |
446 | return 0; /* indicate ignored */ | |
66fb9763 | 447 | } |
ca587a8e | 448 | } else if (!queue && handler == TARGET_SIG_IGN) { |
66fb9763 | 449 | /* ignore signal */ |
9de5e440 | 450 | return 0; |
ca587a8e | 451 | } else if (!queue && handler == TARGET_SIG_ERR) { |
66fb9763 FB |
452 | force_sig(sig); |
453 | } else { | |
9de5e440 FB |
454 | pq = &k->first; |
455 | if (sig < TARGET_SIGRTMIN) { | |
456 | /* if non real time signal, we queue exactly one signal */ | |
457 | if (!k->pending) | |
458 | q = &k->info; | |
459 | else | |
460 | return 0; | |
461 | } else { | |
462 | if (!k->pending) { | |
463 | /* first signal */ | |
464 | q = &k->info; | |
465 | } else { | |
624f7979 | 466 | q = alloc_sigqueue(env); |
9de5e440 FB |
467 | if (!q) |
468 | return -EAGAIN; | |
469 | while (*pq != NULL) | |
470 | pq = &(*pq)->next; | |
471 | } | |
472 | } | |
473 | *pq = q; | |
474 | q->info = *info; | |
475 | q->next = NULL; | |
476 | k->pending = 1; | |
477 | /* signal that a new signal is pending */ | |
624f7979 | 478 | ts->signal_pending = 1; |
9de5e440 FB |
479 | return 1; /* indicates that the signal was queued */ |
480 | } | |
481 | } | |
482 | ||
5fafdf24 | 483 | static void host_signal_handler(int host_signum, siginfo_t *info, |
9de5e440 FB |
484 | void *puc) |
485 | { | |
486 | int sig; | |
c227f099 | 487 | target_siginfo_t tinfo; |
9de5e440 FB |
488 | |
489 | /* the CPU emulator uses some host signals to detect exceptions, | |
eaa449b9 | 490 | we forward to it some signals */ |
ca587a8e | 491 | if ((host_signum == SIGSEGV || host_signum == SIGBUS) |
eaa449b9 | 492 | && info->si_code > 0) { |
b346ff46 | 493 | if (cpu_signal_handler(host_signum, info, puc)) |
9de5e440 FB |
494 | return; |
495 | } | |
496 | ||
497 | /* get target signal number */ | |
498 | sig = host_to_target_signal(host_signum); | |
499 | if (sig < 1 || sig > TARGET_NSIG) | |
500 | return; | |
501 | #if defined(DEBUG_SIGNAL) | |
bc8a22cc | 502 | fprintf(stderr, "qemu: got signal %d\n", sig); |
9de5e440 FB |
503 | #endif |
504 | host_to_target_siginfo_noswap(&tinfo, info); | |
d5975363 | 505 | if (queue_signal(thread_env, sig, &tinfo) == 1) { |
9de5e440 | 506 | /* interrupt the virtual CPU as soon as possible */ |
3098dba0 | 507 | cpu_exit(thread_env); |
66fb9763 FB |
508 | } |
509 | } | |
510 | ||
0da46a6e | 511 | /* do_sigaltstack() returns target values and errnos. */ |
579a97f7 FB |
512 | /* compare linux/kernel/signal.c:do_sigaltstack() */ |
513 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) | |
a04e134a TS |
514 | { |
515 | int ret; | |
516 | struct target_sigaltstack oss; | |
517 | ||
518 | /* XXX: test errors */ | |
579a97f7 | 519 | if(uoss_addr) |
a04e134a TS |
520 | { |
521 | __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp); | |
522 | __put_user(target_sigaltstack_used.ss_size, &oss.ss_size); | |
523 | __put_user(sas_ss_flags(sp), &oss.ss_flags); | |
524 | } | |
525 | ||
579a97f7 | 526 | if(uss_addr) |
a04e134a | 527 | { |
579a97f7 FB |
528 | struct target_sigaltstack *uss; |
529 | struct target_sigaltstack ss; | |
a04e134a | 530 | |
0da46a6e | 531 | ret = -TARGET_EFAULT; |
579a97f7 | 532 | if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1) |
a04e134a TS |
533 | || __get_user(ss.ss_sp, &uss->ss_sp) |
534 | || __get_user(ss.ss_size, &uss->ss_size) | |
535 | || __get_user(ss.ss_flags, &uss->ss_flags)) | |
536 | goto out; | |
579a97f7 | 537 | unlock_user_struct(uss, uss_addr, 0); |
a04e134a | 538 | |
0da46a6e | 539 | ret = -TARGET_EPERM; |
a04e134a TS |
540 | if (on_sig_stack(sp)) |
541 | goto out; | |
542 | ||
0da46a6e | 543 | ret = -TARGET_EINVAL; |
a04e134a TS |
544 | if (ss.ss_flags != TARGET_SS_DISABLE |
545 | && ss.ss_flags != TARGET_SS_ONSTACK | |
546 | && ss.ss_flags != 0) | |
547 | goto out; | |
548 | ||
549 | if (ss.ss_flags == TARGET_SS_DISABLE) { | |
550 | ss.ss_size = 0; | |
551 | ss.ss_sp = 0; | |
552 | } else { | |
0da46a6e | 553 | ret = -TARGET_ENOMEM; |
a04e134a TS |
554 | if (ss.ss_size < MINSIGSTKSZ) |
555 | goto out; | |
556 | } | |
557 | ||
558 | target_sigaltstack_used.ss_sp = ss.ss_sp; | |
559 | target_sigaltstack_used.ss_size = ss.ss_size; | |
560 | } | |
561 | ||
579a97f7 | 562 | if (uoss_addr) { |
0da46a6e | 563 | ret = -TARGET_EFAULT; |
579a97f7 | 564 | if (copy_to_user(uoss_addr, &oss, sizeof(oss))) |
a04e134a | 565 | goto out; |
a04e134a TS |
566 | } |
567 | ||
568 | ret = 0; | |
569 | out: | |
570 | return ret; | |
571 | } | |
572 | ||
0da46a6e | 573 | /* do_sigaction() return host values and errnos */ |
66fb9763 FB |
574 | int do_sigaction(int sig, const struct target_sigaction *act, |
575 | struct target_sigaction *oact) | |
576 | { | |
624f7979 | 577 | struct target_sigaction *k; |
773b93ee FB |
578 | struct sigaction act1; |
579 | int host_sig; | |
0da46a6e | 580 | int ret = 0; |
66fb9763 | 581 | |
2a913eb1 | 582 | if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP) |
66fb9763 FB |
583 | return -EINVAL; |
584 | k = &sigact_table[sig - 1]; | |
773b93ee | 585 | #if defined(DEBUG_SIGNAL) |
0bf9e31a BS |
586 | fprintf(stderr, "sigaction sig=%d act=0x%p, oact=0x%p\n", |
587 | sig, act, oact); | |
66fb9763 FB |
588 | #endif |
589 | if (oact) { | |
624f7979 PB |
590 | oact->_sa_handler = tswapl(k->_sa_handler); |
591 | oact->sa_flags = tswapl(k->sa_flags); | |
388bb21a | 592 | #if !defined(TARGET_MIPS) |
624f7979 | 593 | oact->sa_restorer = tswapl(k->sa_restorer); |
388bb21a | 594 | #endif |
624f7979 | 595 | oact->sa_mask = k->sa_mask; |
66fb9763 FB |
596 | } |
597 | if (act) { | |
624f7979 PB |
598 | /* FIXME: This is not threadsafe. */ |
599 | k->_sa_handler = tswapl(act->_sa_handler); | |
600 | k->sa_flags = tswapl(act->sa_flags); | |
388bb21a | 601 | #if !defined(TARGET_MIPS) |
624f7979 | 602 | k->sa_restorer = tswapl(act->sa_restorer); |
388bb21a | 603 | #endif |
624f7979 | 604 | k->sa_mask = act->sa_mask; |
773b93ee FB |
605 | |
606 | /* we update the host linux signal state */ | |
607 | host_sig = target_to_host_signal(sig); | |
608 | if (host_sig != SIGSEGV && host_sig != SIGBUS) { | |
609 | sigfillset(&act1.sa_mask); | |
610 | act1.sa_flags = SA_SIGINFO; | |
624f7979 | 611 | if (k->sa_flags & TARGET_SA_RESTART) |
773b93ee FB |
612 | act1.sa_flags |= SA_RESTART; |
613 | /* NOTE: it is important to update the host kernel signal | |
614 | ignore state to avoid getting unexpected interrupted | |
615 | syscalls */ | |
624f7979 | 616 | if (k->_sa_handler == TARGET_SIG_IGN) { |
773b93ee | 617 | act1.sa_sigaction = (void *)SIG_IGN; |
624f7979 | 618 | } else if (k->_sa_handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
619 | if (fatal_signal (sig)) |
620 | act1.sa_sigaction = host_signal_handler; | |
621 | else | |
622 | act1.sa_sigaction = (void *)SIG_DFL; | |
773b93ee FB |
623 | } else { |
624 | act1.sa_sigaction = host_signal_handler; | |
625 | } | |
0da46a6e | 626 | ret = sigaction(host_sig, &act1, NULL); |
773b93ee | 627 | } |
66fb9763 | 628 | } |
0da46a6e | 629 | return ret; |
66fb9763 FB |
630 | } |
631 | ||
c227f099 AL |
632 | static inline int copy_siginfo_to_user(target_siginfo_t *tinfo, |
633 | const target_siginfo_t *info) | |
43fff238 FB |
634 | { |
635 | tswap_siginfo(tinfo, info); | |
636 | return 0; | |
637 | } | |
638 | ||
c3b5bc8a TS |
639 | static inline int current_exec_domain_sig(int sig) |
640 | { | |
641 | return /* current->exec_domain && current->exec_domain->signal_invmap | |
642 | && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig; | |
643 | } | |
644 | ||
459a4017 | 645 | #if defined(TARGET_I386) && TARGET_ABI_BITS == 32 |
66fb9763 FB |
646 | |
647 | /* from the Linux kernel */ | |
648 | ||
649 | struct target_fpreg { | |
650 | uint16_t significand[4]; | |
651 | uint16_t exponent; | |
652 | }; | |
653 | ||
654 | struct target_fpxreg { | |
655 | uint16_t significand[4]; | |
656 | uint16_t exponent; | |
657 | uint16_t padding[3]; | |
658 | }; | |
659 | ||
660 | struct target_xmmreg { | |
992f48a0 | 661 | abi_ulong element[4]; |
66fb9763 FB |
662 | }; |
663 | ||
664 | struct target_fpstate { | |
665 | /* Regular FPU environment */ | |
992f48a0 BS |
666 | abi_ulong cw; |
667 | abi_ulong sw; | |
668 | abi_ulong tag; | |
669 | abi_ulong ipoff; | |
670 | abi_ulong cssel; | |
671 | abi_ulong dataoff; | |
672 | abi_ulong datasel; | |
66fb9763 FB |
673 | struct target_fpreg _st[8]; |
674 | uint16_t status; | |
675 | uint16_t magic; /* 0xffff = regular FPU data only */ | |
676 | ||
677 | /* FXSR FPU environment */ | |
992f48a0 BS |
678 | abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
679 | abi_ulong mxcsr; | |
680 | abi_ulong reserved; | |
66fb9763 FB |
681 | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
682 | struct target_xmmreg _xmm[8]; | |
992f48a0 | 683 | abi_ulong padding[56]; |
66fb9763 FB |
684 | }; |
685 | ||
686 | #define X86_FXSR_MAGIC 0x0000 | |
687 | ||
688 | struct target_sigcontext { | |
689 | uint16_t gs, __gsh; | |
690 | uint16_t fs, __fsh; | |
691 | uint16_t es, __esh; | |
692 | uint16_t ds, __dsh; | |
992f48a0 BS |
693 | abi_ulong edi; |
694 | abi_ulong esi; | |
695 | abi_ulong ebp; | |
696 | abi_ulong esp; | |
697 | abi_ulong ebx; | |
698 | abi_ulong edx; | |
699 | abi_ulong ecx; | |
700 | abi_ulong eax; | |
701 | abi_ulong trapno; | |
702 | abi_ulong err; | |
703 | abi_ulong eip; | |
66fb9763 | 704 | uint16_t cs, __csh; |
992f48a0 BS |
705 | abi_ulong eflags; |
706 | abi_ulong esp_at_signal; | |
66fb9763 | 707 | uint16_t ss, __ssh; |
992f48a0 BS |
708 | abi_ulong fpstate; /* pointer */ |
709 | abi_ulong oldmask; | |
710 | abi_ulong cr2; | |
66fb9763 FB |
711 | }; |
712 | ||
66fb9763 | 713 | struct target_ucontext { |
992f48a0 BS |
714 | abi_ulong tuc_flags; |
715 | abi_ulong tuc_link; | |
c227f099 | 716 | target_stack_t tuc_stack; |
b8076a74 | 717 | struct target_sigcontext tuc_mcontext; |
c227f099 | 718 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
66fb9763 FB |
719 | }; |
720 | ||
721 | struct sigframe | |
722 | { | |
992f48a0 | 723 | abi_ulong pretcode; |
66fb9763 FB |
724 | int sig; |
725 | struct target_sigcontext sc; | |
726 | struct target_fpstate fpstate; | |
992f48a0 | 727 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
66fb9763 FB |
728 | char retcode[8]; |
729 | }; | |
730 | ||
731 | struct rt_sigframe | |
732 | { | |
992f48a0 | 733 | abi_ulong pretcode; |
66fb9763 | 734 | int sig; |
992f48a0 BS |
735 | abi_ulong pinfo; |
736 | abi_ulong puc; | |
66fb9763 FB |
737 | struct target_siginfo info; |
738 | struct target_ucontext uc; | |
739 | struct target_fpstate fpstate; | |
740 | char retcode[8]; | |
741 | }; | |
742 | ||
743 | /* | |
744 | * Set up a signal frame. | |
745 | */ | |
746 | ||
66fb9763 FB |
747 | /* XXX: save x87 state */ |
748 | static int | |
749 | setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate, | |
28be6234 | 750 | CPUX86State *env, abi_ulong mask, abi_ulong fpstate_addr) |
66fb9763 FB |
751 | { |
752 | int err = 0; | |
775b58d8 | 753 | uint16_t magic; |
66fb9763 | 754 | |
579a97f7 | 755 | /* already locked in setup_frame() */ |
a52c757c FB |
756 | err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
757 | err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); | |
758 | err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); | |
759 | err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); | |
66fb9763 FB |
760 | err |= __put_user(env->regs[R_EDI], &sc->edi); |
761 | err |= __put_user(env->regs[R_ESI], &sc->esi); | |
762 | err |= __put_user(env->regs[R_EBP], &sc->ebp); | |
763 | err |= __put_user(env->regs[R_ESP], &sc->esp); | |
764 | err |= __put_user(env->regs[R_EBX], &sc->ebx); | |
765 | err |= __put_user(env->regs[R_EDX], &sc->edx); | |
766 | err |= __put_user(env->regs[R_ECX], &sc->ecx); | |
767 | err |= __put_user(env->regs[R_EAX], &sc->eax); | |
66099dd9 FB |
768 | err |= __put_user(env->exception_index, &sc->trapno); |
769 | err |= __put_user(env->error_code, &sc->err); | |
66fb9763 | 770 | err |= __put_user(env->eip, &sc->eip); |
a52c757c | 771 | err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); |
66fb9763 FB |
772 | err |= __put_user(env->eflags, &sc->eflags); |
773 | err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal); | |
a52c757c | 774 | err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); |
ed2dcdf6 | 775 | |
28be6234 | 776 | cpu_x86_fsave(env, fpstate_addr, 1); |
ed2dcdf6 | 777 | fpstate->status = fpstate->sw; |
775b58d8 FB |
778 | magic = 0xffff; |
779 | err |= __put_user(magic, &fpstate->magic); | |
28be6234 | 780 | err |= __put_user(fpstate_addr, &sc->fpstate); |
ed2dcdf6 | 781 | |
66fb9763 FB |
782 | /* non-iBCS2 extensions.. */ |
783 | err |= __put_user(mask, &sc->oldmask); | |
a52c757c | 784 | err |= __put_user(env->cr[2], &sc->cr2); |
66fb9763 | 785 | return err; |
31e31b8a FB |
786 | } |
787 | ||
66fb9763 FB |
788 | /* |
789 | * Determine which stack to use.. | |
790 | */ | |
31e31b8a | 791 | |
579a97f7 | 792 | static inline abi_ulong |
624f7979 | 793 | get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size) |
31e31b8a | 794 | { |
66fb9763 FB |
795 | unsigned long esp; |
796 | ||
797 | /* Default to using normal stack */ | |
798 | esp = env->regs[R_ESP]; | |
66fb9763 | 799 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 800 | if (ka->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
801 | if (sas_ss_flags(esp) == 0) |
802 | esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
803 | } | |
66fb9763 FB |
804 | |
805 | /* This is the legacy signal stack switching. */ | |
5fafdf24 | 806 | else |
a52c757c | 807 | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
624f7979 PB |
808 | !(ka->sa_flags & TARGET_SA_RESTORER) && |
809 | ka->sa_restorer) { | |
810 | esp = (unsigned long) ka->sa_restorer; | |
a52c757c | 811 | } |
579a97f7 | 812 | return (esp - frame_size) & -8ul; |
66fb9763 FB |
813 | } |
814 | ||
579a97f7 | 815 | /* compare linux/arch/i386/kernel/signal.c:setup_frame() */ |
624f7979 | 816 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 817 | target_sigset_t *set, CPUX86State *env) |
66fb9763 | 818 | { |
579a97f7 | 819 | abi_ulong frame_addr; |
66fb9763 | 820 | struct sigframe *frame; |
9231944d | 821 | int i, err = 0; |
66fb9763 | 822 | |
579a97f7 | 823 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 824 | |
579a97f7 | 825 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 826 | goto give_sigsegv; |
579a97f7 | 827 | |
c3b5bc8a | 828 | err |= __put_user(current_exec_domain_sig(sig), |
66fb9763 FB |
829 | &frame->sig); |
830 | if (err) | |
831 | goto give_sigsegv; | |
832 | ||
28be6234 FB |
833 | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0], |
834 | frame_addr + offsetof(struct sigframe, fpstate)); | |
66fb9763 FB |
835 | if (err) |
836 | goto give_sigsegv; | |
837 | ||
9231944d FB |
838 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
839 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
840 | goto give_sigsegv; | |
841 | } | |
66fb9763 FB |
842 | |
843 | /* Set up to return from userspace. If provided, use a stub | |
844 | already in userspace. */ | |
624f7979 PB |
845 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
846 | err |= __put_user(ka->sa_restorer, &frame->pretcode); | |
66fb9763 | 847 | } else { |
775b58d8 | 848 | uint16_t val16; |
28be6234 FB |
849 | abi_ulong retcode_addr; |
850 | retcode_addr = frame_addr + offsetof(struct sigframe, retcode); | |
851 | err |= __put_user(retcode_addr, &frame->pretcode); | |
66fb9763 | 852 | /* This is popl %eax ; movl $,%eax ; int $0x80 */ |
775b58d8 FB |
853 | val16 = 0xb858; |
854 | err |= __put_user(val16, (uint16_t *)(frame->retcode+0)); | |
66fb9763 | 855 | err |= __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); |
775b58d8 FB |
856 | val16 = 0x80cd; |
857 | err |= __put_user(val16, (uint16_t *)(frame->retcode+6)); | |
66fb9763 FB |
858 | } |
859 | ||
860 | if (err) | |
861 | goto give_sigsegv; | |
862 | ||
863 | /* Set up registers for signal handler */ | |
28be6234 | 864 | env->regs[R_ESP] = frame_addr; |
624f7979 | 865 | env->eip = ka->_sa_handler; |
66fb9763 FB |
866 | |
867 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
868 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
869 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
870 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
871 | env->eflags &= ~TF_MASK; | |
872 | ||
579a97f7 FB |
873 | unlock_user_struct(frame, frame_addr, 1); |
874 | ||
66fb9763 FB |
875 | return; |
876 | ||
877 | give_sigsegv: | |
579a97f7 | 878 | unlock_user_struct(frame, frame_addr, 1); |
66fb9763 | 879 | if (sig == TARGET_SIGSEGV) |
624f7979 | 880 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
881 | force_sig(TARGET_SIGSEGV /* , current */); |
882 | } | |
883 | ||
579a97f7 | 884 | /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 885 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
886 | target_siginfo_t *info, |
887 | target_sigset_t *set, CPUX86State *env) | |
66fb9763 | 888 | { |
28be6234 | 889 | abi_ulong frame_addr, addr; |
66fb9763 | 890 | struct rt_sigframe *frame; |
9231944d | 891 | int i, err = 0; |
66fb9763 | 892 | |
579a97f7 | 893 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 894 | |
579a97f7 | 895 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 896 | goto give_sigsegv; |
66fb9763 | 897 | |
c3b5bc8a | 898 | err |= __put_user(current_exec_domain_sig(sig), |
66fb9763 | 899 | &frame->sig); |
28be6234 FB |
900 | addr = frame_addr + offsetof(struct rt_sigframe, info); |
901 | err |= __put_user(addr, &frame->pinfo); | |
902 | addr = frame_addr + offsetof(struct rt_sigframe, uc); | |
903 | err |= __put_user(addr, &frame->puc); | |
66fb9763 FB |
904 | err |= copy_siginfo_to_user(&frame->info, info); |
905 | if (err) | |
906 | goto give_sigsegv; | |
31e31b8a | 907 | |
66fb9763 | 908 | /* Create the ucontext. */ |
b8076a74 FB |
909 | err |= __put_user(0, &frame->uc.tuc_flags); |
910 | err |= __put_user(0, &frame->uc.tuc_link); | |
a04e134a | 911 | err |= __put_user(target_sigaltstack_used.ss_sp, |
b8076a74 | 912 | &frame->uc.tuc_stack.ss_sp); |
a04e134a | 913 | err |= __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
b8076a74 | 914 | &frame->uc.tuc_stack.ss_flags); |
a04e134a | 915 | err |= __put_user(target_sigaltstack_used.ss_size, |
b8076a74 FB |
916 | &frame->uc.tuc_stack.ss_size); |
917 | err |= setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, | |
28be6234 FB |
918 | env, set->sig[0], |
919 | frame_addr + offsetof(struct rt_sigframe, fpstate)); | |
9231944d | 920 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
b8076a74 | 921 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
9231944d FB |
922 | goto give_sigsegv; |
923 | } | |
31e31b8a | 924 | |
66fb9763 FB |
925 | /* Set up to return from userspace. If provided, use a stub |
926 | already in userspace. */ | |
624f7979 PB |
927 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
928 | err |= __put_user(ka->sa_restorer, &frame->pretcode); | |
66fb9763 | 929 | } else { |
775b58d8 | 930 | uint16_t val16; |
28be6234 FB |
931 | addr = frame_addr + offsetof(struct rt_sigframe, retcode); |
932 | err |= __put_user(addr, &frame->pretcode); | |
66fb9763 | 933 | /* This is movl $,%eax ; int $0x80 */ |
775b58d8 | 934 | err |= __put_user(0xb8, (char *)(frame->retcode+0)); |
66fb9763 | 935 | err |= __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); |
775b58d8 FB |
936 | val16 = 0x80cd; |
937 | err |= __put_user(val16, (uint16_t *)(frame->retcode+5)); | |
66fb9763 FB |
938 | } |
939 | ||
940 | if (err) | |
941 | goto give_sigsegv; | |
942 | ||
943 | /* Set up registers for signal handler */ | |
28be6234 | 944 | env->regs[R_ESP] = frame_addr; |
624f7979 | 945 | env->eip = ka->_sa_handler; |
66fb9763 FB |
946 | |
947 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
948 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
949 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
950 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
951 | env->eflags &= ~TF_MASK; | |
952 | ||
579a97f7 FB |
953 | unlock_user_struct(frame, frame_addr, 1); |
954 | ||
66fb9763 FB |
955 | return; |
956 | ||
957 | give_sigsegv: | |
579a97f7 | 958 | unlock_user_struct(frame, frame_addr, 1); |
66fb9763 | 959 | if (sig == TARGET_SIGSEGV) |
624f7979 | 960 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
961 | force_sig(TARGET_SIGSEGV /* , current */); |
962 | } | |
963 | ||
964 | static int | |
965 | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) | |
966 | { | |
967 | unsigned int err = 0; | |
28be6234 FB |
968 | abi_ulong fpstate_addr; |
969 | unsigned int tmpflags; | |
970 | ||
971 | cpu_x86_load_seg(env, R_GS, tswap16(sc->gs)); | |
972 | cpu_x86_load_seg(env, R_FS, tswap16(sc->fs)); | |
973 | cpu_x86_load_seg(env, R_ES, tswap16(sc->es)); | |
974 | cpu_x86_load_seg(env, R_DS, tswap16(sc->ds)); | |
975 | ||
976 | env->regs[R_EDI] = tswapl(sc->edi); | |
977 | env->regs[R_ESI] = tswapl(sc->esi); | |
978 | env->regs[R_EBP] = tswapl(sc->ebp); | |
979 | env->regs[R_ESP] = tswapl(sc->esp); | |
980 | env->regs[R_EBX] = tswapl(sc->ebx); | |
981 | env->regs[R_EDX] = tswapl(sc->edx); | |
982 | env->regs[R_ECX] = tswapl(sc->ecx); | |
983 | env->eip = tswapl(sc->eip); | |
66fb9763 FB |
984 | |
985 | cpu_x86_load_seg(env, R_CS, lduw(&sc->cs) | 3); | |
986 | cpu_x86_load_seg(env, R_SS, lduw(&sc->ss) | 3); | |
5fafdf24 | 987 | |
28be6234 FB |
988 | tmpflags = tswapl(sc->eflags); |
989 | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); | |
990 | // regs->orig_eax = -1; /* disable syscall checks */ | |
66fb9763 | 991 | |
28be6234 FB |
992 | fpstate_addr = tswapl(sc->fpstate); |
993 | if (fpstate_addr != 0) { | |
994 | if (!access_ok(VERIFY_READ, fpstate_addr, | |
995 | sizeof(struct target_fpstate))) | |
996 | goto badframe; | |
997 | cpu_x86_frstor(env, fpstate_addr, 1); | |
66fb9763 | 998 | } |
ed2dcdf6 | 999 | |
28be6234 | 1000 | *peax = tswapl(sc->eax); |
66fb9763 | 1001 | return err; |
66fb9763 FB |
1002 | badframe: |
1003 | return 1; | |
66fb9763 FB |
1004 | } |
1005 | ||
1006 | long do_sigreturn(CPUX86State *env) | |
1007 | { | |
579a97f7 FB |
1008 | struct sigframe *frame; |
1009 | abi_ulong frame_addr = env->regs[R_ESP] - 8; | |
c227f099 | 1010 | target_sigset_t target_set; |
66fb9763 FB |
1011 | sigset_t set; |
1012 | int eax, i; | |
1013 | ||
447db213 FB |
1014 | #if defined(DEBUG_SIGNAL) |
1015 | fprintf(stderr, "do_sigreturn\n"); | |
1016 | #endif | |
579a97f7 FB |
1017 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1018 | goto badframe; | |
66fb9763 | 1019 | /* set blocked signals */ |
9231944d FB |
1020 | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
1021 | goto badframe; | |
1022 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
1023 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
1024 | goto badframe; | |
1025 | } | |
66fb9763 | 1026 | |
9231944d | 1027 | target_to_host_sigset_internal(&set, &target_set); |
66fb9763 | 1028 | sigprocmask(SIG_SETMASK, &set, NULL); |
3b46e624 | 1029 | |
66fb9763 FB |
1030 | /* restore registers */ |
1031 | if (restore_sigcontext(env, &frame->sc, &eax)) | |
1032 | goto badframe; | |
579a97f7 | 1033 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1034 | return eax; |
1035 | ||
1036 | badframe: | |
579a97f7 | 1037 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1038 | force_sig(TARGET_SIGSEGV); |
1039 | return 0; | |
1040 | } | |
1041 | ||
1042 | long do_rt_sigreturn(CPUX86State *env) | |
1043 | { | |
28be6234 FB |
1044 | abi_ulong frame_addr; |
1045 | struct rt_sigframe *frame; | |
66fb9763 | 1046 | sigset_t set; |
66fb9763 FB |
1047 | int eax; |
1048 | ||
28be6234 FB |
1049 | frame_addr = env->regs[R_ESP] - 4; |
1050 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1051 | goto badframe; | |
b8076a74 | 1052 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
66fb9763 | 1053 | sigprocmask(SIG_SETMASK, &set, NULL); |
5fafdf24 | 1054 | |
b8076a74 | 1055 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax)) |
66fb9763 FB |
1056 | goto badframe; |
1057 | ||
28be6234 FB |
1058 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, |
1059 | get_sp_from_cpustate(env)) == -EFAULT) | |
66fb9763 | 1060 | goto badframe; |
a04e134a | 1061 | |
28be6234 | 1062 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
1063 | return eax; |
1064 | ||
1065 | badframe: | |
28be6234 FB |
1066 | unlock_user_struct(frame, frame_addr, 0); |
1067 | force_sig(TARGET_SIGSEGV); | |
66fb9763 FB |
1068 | return 0; |
1069 | } | |
1070 | ||
43fff238 FB |
1071 | #elif defined(TARGET_ARM) |
1072 | ||
1073 | struct target_sigcontext { | |
992f48a0 BS |
1074 | abi_ulong trap_no; |
1075 | abi_ulong error_code; | |
1076 | abi_ulong oldmask; | |
1077 | abi_ulong arm_r0; | |
1078 | abi_ulong arm_r1; | |
1079 | abi_ulong arm_r2; | |
1080 | abi_ulong arm_r3; | |
1081 | abi_ulong arm_r4; | |
1082 | abi_ulong arm_r5; | |
1083 | abi_ulong arm_r6; | |
1084 | abi_ulong arm_r7; | |
1085 | abi_ulong arm_r8; | |
1086 | abi_ulong arm_r9; | |
1087 | abi_ulong arm_r10; | |
1088 | abi_ulong arm_fp; | |
1089 | abi_ulong arm_ip; | |
1090 | abi_ulong arm_sp; | |
1091 | abi_ulong arm_lr; | |
1092 | abi_ulong arm_pc; | |
1093 | abi_ulong arm_cpsr; | |
1094 | abi_ulong fault_address; | |
43fff238 FB |
1095 | }; |
1096 | ||
a745ec6d PB |
1097 | struct target_ucontext_v1 { |
1098 | abi_ulong tuc_flags; | |
1099 | abi_ulong tuc_link; | |
c227f099 | 1100 | target_stack_t tuc_stack; |
a745ec6d | 1101 | struct target_sigcontext tuc_mcontext; |
c227f099 | 1102 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
a745ec6d PB |
1103 | }; |
1104 | ||
1105 | struct target_ucontext_v2 { | |
992f48a0 BS |
1106 | abi_ulong tuc_flags; |
1107 | abi_ulong tuc_link; | |
c227f099 | 1108 | target_stack_t tuc_stack; |
b8076a74 | 1109 | struct target_sigcontext tuc_mcontext; |
c227f099 | 1110 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ |
5f0b7c88 | 1111 | char __unused[128 - sizeof(target_sigset_t)]; |
a745ec6d | 1112 | abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); |
43fff238 FB |
1113 | }; |
1114 | ||
0d871bdb PM |
1115 | struct target_user_vfp { |
1116 | uint64_t fpregs[32]; | |
1117 | abi_ulong fpscr; | |
1118 | }; | |
1119 | ||
1120 | struct target_user_vfp_exc { | |
1121 | abi_ulong fpexc; | |
1122 | abi_ulong fpinst; | |
1123 | abi_ulong fpinst2; | |
1124 | }; | |
1125 | ||
1126 | struct target_vfp_sigframe { | |
1127 | abi_ulong magic; | |
1128 | abi_ulong size; | |
1129 | struct target_user_vfp ufp; | |
1130 | struct target_user_vfp_exc ufp_exc; | |
1131 | } __attribute__((__aligned__(8))); | |
1132 | ||
08e11256 PM |
1133 | struct target_iwmmxt_sigframe { |
1134 | abi_ulong magic; | |
1135 | abi_ulong size; | |
1136 | uint64_t regs[16]; | |
1137 | /* Note that not all the coprocessor control registers are stored here */ | |
1138 | uint32_t wcssf; | |
1139 | uint32_t wcasf; | |
1140 | uint32_t wcgr0; | |
1141 | uint32_t wcgr1; | |
1142 | uint32_t wcgr2; | |
1143 | uint32_t wcgr3; | |
1144 | } __attribute__((__aligned__(8))); | |
1145 | ||
0d871bdb | 1146 | #define TARGET_VFP_MAGIC 0x56465001 |
08e11256 | 1147 | #define TARGET_IWMMXT_MAGIC 0x12ef842a |
0d871bdb | 1148 | |
a8c33204 | 1149 | struct sigframe_v1 |
43fff238 FB |
1150 | { |
1151 | struct target_sigcontext sc; | |
992f48a0 BS |
1152 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
1153 | abi_ulong retcode; | |
43fff238 FB |
1154 | }; |
1155 | ||
a8c33204 PB |
1156 | struct sigframe_v2 |
1157 | { | |
1158 | struct target_ucontext_v2 uc; | |
1159 | abi_ulong retcode; | |
1160 | }; | |
1161 | ||
a745ec6d | 1162 | struct rt_sigframe_v1 |
43fff238 | 1163 | { |
f8b0aa25 FB |
1164 | abi_ulong pinfo; |
1165 | abi_ulong puc; | |
43fff238 | 1166 | struct target_siginfo info; |
a745ec6d PB |
1167 | struct target_ucontext_v1 uc; |
1168 | abi_ulong retcode; | |
1169 | }; | |
1170 | ||
1171 | struct rt_sigframe_v2 | |
1172 | { | |
1173 | struct target_siginfo info; | |
1174 | struct target_ucontext_v2 uc; | |
992f48a0 | 1175 | abi_ulong retcode; |
43fff238 FB |
1176 | }; |
1177 | ||
1178 | #define TARGET_CONFIG_CPU_32 1 | |
1179 | ||
1180 | /* | |
1181 | * For ARM syscalls, we encode the syscall number into the instruction. | |
1182 | */ | |
1183 | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) | |
1184 | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) | |
1185 | ||
1186 | /* | |
1187 | * For Thumb syscalls, we pass the syscall number via r7. We therefore | |
1188 | * need two 16-bit instructions. | |
1189 | */ | |
1190 | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) | |
1191 | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) | |
1192 | ||
992f48a0 | 1193 | static const abi_ulong retcodes[4] = { |
43fff238 FB |
1194 | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
1195 | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN | |
1196 | }; | |
1197 | ||
1198 | ||
43fff238 FB |
1199 | #define __get_user_error(x,p,e) __get_user(x, p) |
1200 | ||
1201 | static inline int valid_user_regs(CPUState *regs) | |
1202 | { | |
1203 | return 1; | |
1204 | } | |
1205 | ||
a8c33204 | 1206 | static void |
43fff238 | 1207 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
f8b0aa25 | 1208 | CPUState *env, abi_ulong mask) |
43fff238 | 1209 | { |
a8c33204 PB |
1210 | __put_user(env->regs[0], &sc->arm_r0); |
1211 | __put_user(env->regs[1], &sc->arm_r1); | |
1212 | __put_user(env->regs[2], &sc->arm_r2); | |
1213 | __put_user(env->regs[3], &sc->arm_r3); | |
1214 | __put_user(env->regs[4], &sc->arm_r4); | |
1215 | __put_user(env->regs[5], &sc->arm_r5); | |
1216 | __put_user(env->regs[6], &sc->arm_r6); | |
1217 | __put_user(env->regs[7], &sc->arm_r7); | |
1218 | __put_user(env->regs[8], &sc->arm_r8); | |
1219 | __put_user(env->regs[9], &sc->arm_r9); | |
1220 | __put_user(env->regs[10], &sc->arm_r10); | |
1221 | __put_user(env->regs[11], &sc->arm_fp); | |
1222 | __put_user(env->regs[12], &sc->arm_ip); | |
1223 | __put_user(env->regs[13], &sc->arm_sp); | |
1224 | __put_user(env->regs[14], &sc->arm_lr); | |
1225 | __put_user(env->regs[15], &sc->arm_pc); | |
43fff238 | 1226 | #ifdef TARGET_CONFIG_CPU_32 |
a8c33204 | 1227 | __put_user(cpsr_read(env), &sc->arm_cpsr); |
43fff238 FB |
1228 | #endif |
1229 | ||
a8c33204 PB |
1230 | __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); |
1231 | __put_user(/* current->thread.error_code */ 0, &sc->error_code); | |
1232 | __put_user(/* current->thread.address */ 0, &sc->fault_address); | |
1233 | __put_user(mask, &sc->oldmask); | |
43fff238 FB |
1234 | } |
1235 | ||
579a97f7 | 1236 | static inline abi_ulong |
624f7979 | 1237 | get_sigframe(struct target_sigaction *ka, CPUState *regs, int framesize) |
43fff238 FB |
1238 | { |
1239 | unsigned long sp = regs->regs[13]; | |
1240 | ||
43fff238 FB |
1241 | /* |
1242 | * This is the X/Open sanctioned signal stack switching. | |
1243 | */ | |
624f7979 | 1244 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) |
a04e134a | 1245 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
43fff238 FB |
1246 | /* |
1247 | * ATPCS B01 mandates 8-byte alignment | |
1248 | */ | |
579a97f7 | 1249 | return (sp - framesize) & ~7; |
43fff238 FB |
1250 | } |
1251 | ||
1252 | static int | |
624f7979 | 1253 | setup_return(CPUState *env, struct target_sigaction *ka, |
f8b0aa25 | 1254 | abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr) |
43fff238 | 1255 | { |
624f7979 | 1256 | abi_ulong handler = ka->_sa_handler; |
992f48a0 | 1257 | abi_ulong retcode; |
75b680e5 | 1258 | int thumb = handler & 1; |
964413d9 PM |
1259 | uint32_t cpsr = cpsr_read(env); |
1260 | ||
1261 | cpsr &= ~CPSR_IT; | |
1262 | if (thumb) { | |
1263 | cpsr |= CPSR_T; | |
1264 | } else { | |
1265 | cpsr &= ~CPSR_T; | |
1266 | } | |
43fff238 | 1267 | |
624f7979 PB |
1268 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1269 | retcode = ka->sa_restorer; | |
43fff238 FB |
1270 | } else { |
1271 | unsigned int idx = thumb; | |
1272 | ||
624f7979 | 1273 | if (ka->sa_flags & TARGET_SA_SIGINFO) |
43fff238 FB |
1274 | idx += 2; |
1275 | ||
1276 | if (__put_user(retcodes[idx], rc)) | |
1277 | return 1; | |
1278 | #if 0 | |
992f48a0 BS |
1279 | flush_icache_range((abi_ulong)rc, |
1280 | (abi_ulong)(rc + 1)); | |
43fff238 | 1281 | #endif |
f8b0aa25 | 1282 | retcode = rc_addr + thumb; |
43fff238 FB |
1283 | } |
1284 | ||
1285 | env->regs[0] = usig; | |
f8b0aa25 | 1286 | env->regs[13] = frame_addr; |
43fff238 FB |
1287 | env->regs[14] = retcode; |
1288 | env->regs[15] = handler & (thumb ? ~1 : ~3); | |
964413d9 | 1289 | cpsr_write(env, cpsr, 0xffffffff); |
43fff238 FB |
1290 | |
1291 | return 0; | |
1292 | } | |
1293 | ||
0d871bdb PM |
1294 | static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUState *env) |
1295 | { | |
1296 | int i; | |
1297 | struct target_vfp_sigframe *vfpframe; | |
1298 | vfpframe = (struct target_vfp_sigframe *)regspace; | |
1299 | __put_user(TARGET_VFP_MAGIC, &vfpframe->magic); | |
1300 | __put_user(sizeof(*vfpframe), &vfpframe->size); | |
1301 | for (i = 0; i < 32; i++) { | |
005e1a0a | 1302 | __put_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]); |
0d871bdb PM |
1303 | } |
1304 | __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr); | |
1305 | __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc); | |
1306 | __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); | |
1307 | __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2); | |
1308 | return (abi_ulong*)(vfpframe+1); | |
1309 | } | |
1310 | ||
08e11256 PM |
1311 | static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace, CPUState *env) |
1312 | { | |
1313 | int i; | |
1314 | struct target_iwmmxt_sigframe *iwmmxtframe; | |
1315 | iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace; | |
1316 | __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic); | |
1317 | __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size); | |
1318 | for (i = 0; i < 16; i++) { | |
1319 | __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); | |
1320 | } | |
1321 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); | |
1322 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); | |
1323 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); | |
1324 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); | |
1325 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); | |
1326 | __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); | |
1327 | return (abi_ulong*)(iwmmxtframe+1); | |
1328 | } | |
1329 | ||
a8c33204 | 1330 | static void setup_sigframe_v2(struct target_ucontext_v2 *uc, |
c227f099 | 1331 | target_sigset_t *set, CPUState *env) |
a8c33204 PB |
1332 | { |
1333 | struct target_sigaltstack stack; | |
1334 | int i; | |
0d871bdb | 1335 | abi_ulong *regspace; |
a8c33204 PB |
1336 | |
1337 | /* Clear all the bits of the ucontext we don't use. */ | |
1338 | memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); | |
1339 | ||
1340 | memset(&stack, 0, sizeof(stack)); | |
1341 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1342 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1343 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
1344 | memcpy(&uc->tuc_stack, &stack, sizeof(stack)); | |
1345 | ||
1346 | setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]); | |
0d871bdb PM |
1347 | /* Save coprocessor signal frame. */ |
1348 | regspace = uc->tuc_regspace; | |
1349 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
1350 | regspace = setup_sigframe_v2_vfp(regspace, env); | |
1351 | } | |
08e11256 PM |
1352 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
1353 | regspace = setup_sigframe_v2_iwmmxt(regspace, env); | |
1354 | } | |
1355 | ||
0d871bdb PM |
1356 | /* Write terminating magic word */ |
1357 | __put_user(0, regspace); | |
1358 | ||
a8c33204 PB |
1359 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1360 | __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); | |
1361 | } | |
1362 | } | |
1363 | ||
579a97f7 | 1364 | /* compare linux/arch/arm/kernel/signal.c:setup_frame() */ |
624f7979 | 1365 | static void setup_frame_v1(int usig, struct target_sigaction *ka, |
c227f099 | 1366 | target_sigset_t *set, CPUState *regs) |
43fff238 | 1367 | { |
a8c33204 | 1368 | struct sigframe_v1 *frame; |
579a97f7 | 1369 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
a8c33204 | 1370 | int i; |
43fff238 | 1371 | |
579a97f7 FB |
1372 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1373 | return; | |
1374 | ||
a8c33204 | 1375 | setup_sigcontext(&frame->sc, regs, set->sig[0]); |
43fff238 | 1376 | |
9231944d FB |
1377 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1378 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
579a97f7 | 1379 | goto end; |
43fff238 FB |
1380 | } |
1381 | ||
a8c33204 PB |
1382 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, |
1383 | frame_addr + offsetof(struct sigframe_v1, retcode)); | |
579a97f7 FB |
1384 | |
1385 | end: | |
1386 | unlock_user_struct(frame, frame_addr, 1); | |
a8c33204 PB |
1387 | } |
1388 | ||
624f7979 | 1389 | static void setup_frame_v2(int usig, struct target_sigaction *ka, |
c227f099 | 1390 | target_sigset_t *set, CPUState *regs) |
a8c33204 PB |
1391 | { |
1392 | struct sigframe_v2 *frame; | |
1393 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); | |
1394 | ||
1395 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1396 | return; | |
1397 | ||
1398 | setup_sigframe_v2(&frame->uc, set, regs); | |
1399 | ||
1400 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, | |
1401 | frame_addr + offsetof(struct sigframe_v2, retcode)); | |
1402 | ||
1403 | unlock_user_struct(frame, frame_addr, 1); | |
1404 | } | |
1405 | ||
624f7979 | 1406 | static void setup_frame(int usig, struct target_sigaction *ka, |
c227f099 | 1407 | target_sigset_t *set, CPUState *regs) |
a8c33204 PB |
1408 | { |
1409 | if (get_osversion() >= 0x020612) { | |
1410 | setup_frame_v2(usig, ka, set, regs); | |
1411 | } else { | |
1412 | setup_frame_v1(usig, ka, set, regs); | |
1413 | } | |
43fff238 FB |
1414 | } |
1415 | ||
579a97f7 | 1416 | /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 1417 | static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, |
c227f099 AL |
1418 | target_siginfo_t *info, |
1419 | target_sigset_t *set, CPUState *env) | |
43fff238 | 1420 | { |
a745ec6d | 1421 | struct rt_sigframe_v1 *frame; |
579a97f7 | 1422 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
a04e134a | 1423 | struct target_sigaltstack stack; |
a8c33204 | 1424 | int i; |
f8b0aa25 | 1425 | abi_ulong info_addr, uc_addr; |
43fff238 | 1426 | |
579a97f7 | 1427 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
edf779ff FB |
1428 | return /* 1 */; |
1429 | ||
a745ec6d | 1430 | info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info); |
a8c33204 | 1431 | __put_user(info_addr, &frame->pinfo); |
a745ec6d | 1432 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc); |
a8c33204 PB |
1433 | __put_user(uc_addr, &frame->puc); |
1434 | copy_siginfo_to_user(&frame->info, info); | |
43fff238 FB |
1435 | |
1436 | /* Clear all the bits of the ucontext we don't use. */ | |
a745ec6d | 1437 | memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext)); |
43fff238 | 1438 | |
a04e134a TS |
1439 | memset(&stack, 0, sizeof(stack)); |
1440 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1441 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1442 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
775b58d8 | 1443 | memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack)); |
a04e134a | 1444 | |
a8c33204 | 1445 | setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]); |
9231944d | 1446 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
b8076a74 | 1447 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
579a97f7 | 1448 | goto end; |
9231944d | 1449 | } |
43fff238 | 1450 | |
a8c33204 PB |
1451 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1452 | frame_addr + offsetof(struct rt_sigframe_v1, retcode)); | |
a745ec6d | 1453 | |
a8c33204 PB |
1454 | env->regs[1] = info_addr; |
1455 | env->regs[2] = uc_addr; | |
a745ec6d PB |
1456 | |
1457 | end: | |
1458 | unlock_user_struct(frame, frame_addr, 1); | |
a745ec6d PB |
1459 | } |
1460 | ||
624f7979 | 1461 | static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, |
c227f099 AL |
1462 | target_siginfo_t *info, |
1463 | target_sigset_t *set, CPUState *env) | |
a745ec6d PB |
1464 | { |
1465 | struct rt_sigframe_v2 *frame; | |
1466 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
a745ec6d PB |
1467 | abi_ulong info_addr, uc_addr; |
1468 | ||
1469 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1470 | return /* 1 */; | |
1471 | ||
1472 | info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info); | |
1473 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc); | |
a8c33204 | 1474 | copy_siginfo_to_user(&frame->info, info); |
a745ec6d | 1475 | |
a8c33204 | 1476 | setup_sigframe_v2(&frame->uc, set, env); |
a745ec6d | 1477 | |
a8c33204 PB |
1478 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1479 | frame_addr + offsetof(struct rt_sigframe_v2, retcode)); | |
a745ec6d | 1480 | |
a8c33204 PB |
1481 | env->regs[1] = info_addr; |
1482 | env->regs[2] = uc_addr; | |
43fff238 | 1483 | |
579a97f7 | 1484 | unlock_user_struct(frame, frame_addr, 1); |
43fff238 FB |
1485 | } |
1486 | ||
624f7979 | 1487 | static void setup_rt_frame(int usig, struct target_sigaction *ka, |
c227f099 AL |
1488 | target_siginfo_t *info, |
1489 | target_sigset_t *set, CPUState *env) | |
a745ec6d PB |
1490 | { |
1491 | if (get_osversion() >= 0x020612) { | |
1492 | setup_rt_frame_v2(usig, ka, info, set, env); | |
1493 | } else { | |
1494 | setup_rt_frame_v1(usig, ka, info, set, env); | |
1495 | } | |
1496 | } | |
1497 | ||
43fff238 FB |
1498 | static int |
1499 | restore_sigcontext(CPUState *env, struct target_sigcontext *sc) | |
1500 | { | |
1501 | int err = 0; | |
b5ff1b31 | 1502 | uint32_t cpsr; |
43fff238 FB |
1503 | |
1504 | __get_user_error(env->regs[0], &sc->arm_r0, err); | |
1505 | __get_user_error(env->regs[1], &sc->arm_r1, err); | |
1506 | __get_user_error(env->regs[2], &sc->arm_r2, err); | |
1507 | __get_user_error(env->regs[3], &sc->arm_r3, err); | |
1508 | __get_user_error(env->regs[4], &sc->arm_r4, err); | |
1509 | __get_user_error(env->regs[5], &sc->arm_r5, err); | |
1510 | __get_user_error(env->regs[6], &sc->arm_r6, err); | |
1511 | __get_user_error(env->regs[7], &sc->arm_r7, err); | |
1512 | __get_user_error(env->regs[8], &sc->arm_r8, err); | |
1513 | __get_user_error(env->regs[9], &sc->arm_r9, err); | |
1514 | __get_user_error(env->regs[10], &sc->arm_r10, err); | |
1515 | __get_user_error(env->regs[11], &sc->arm_fp, err); | |
1516 | __get_user_error(env->regs[12], &sc->arm_ip, err); | |
1517 | __get_user_error(env->regs[13], &sc->arm_sp, err); | |
1518 | __get_user_error(env->regs[14], &sc->arm_lr, err); | |
1519 | __get_user_error(env->regs[15], &sc->arm_pc, err); | |
1520 | #ifdef TARGET_CONFIG_CPU_32 | |
b5ff1b31 | 1521 | __get_user_error(cpsr, &sc->arm_cpsr, err); |
75b680e5 | 1522 | cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC); |
43fff238 FB |
1523 | #endif |
1524 | ||
1525 | err |= !valid_user_regs(env); | |
1526 | ||
1527 | return err; | |
1528 | } | |
1529 | ||
dc7eea67 | 1530 | static long do_sigreturn_v1(CPUState *env) |
43fff238 | 1531 | { |
f8b0aa25 | 1532 | abi_ulong frame_addr; |
a8c33204 | 1533 | struct sigframe_v1 *frame; |
c227f099 | 1534 | target_sigset_t set; |
43fff238 | 1535 | sigset_t host_set; |
9231944d | 1536 | int i; |
43fff238 FB |
1537 | |
1538 | /* | |
1539 | * Since we stacked the signal on a 64-bit boundary, | |
1540 | * then 'sp' should be word aligned here. If it's | |
1541 | * not, then the user is trying to mess with us. | |
1542 | */ | |
1543 | if (env->regs[13] & 7) | |
1544 | goto badframe; | |
1545 | ||
f8b0aa25 FB |
1546 | frame_addr = env->regs[13]; |
1547 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1548 | goto badframe; | |
43fff238 | 1549 | |
9231944d FB |
1550 | if (__get_user(set.sig[0], &frame->sc.oldmask)) |
1551 | goto badframe; | |
1552 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
1553 | if (__get_user(set.sig[i], &frame->extramask[i - 1])) | |
1554 | goto badframe; | |
1555 | } | |
43fff238 | 1556 | |
9231944d | 1557 | target_to_host_sigset_internal(&host_set, &set); |
43fff238 FB |
1558 | sigprocmask(SIG_SETMASK, &host_set, NULL); |
1559 | ||
1560 | if (restore_sigcontext(env, &frame->sc)) | |
1561 | goto badframe; | |
1562 | ||
1563 | #if 0 | |
1564 | /* Send SIGTRAP if we're single-stepping */ | |
1565 | if (ptrace_cancel_bpt(current)) | |
1566 | send_sig(SIGTRAP, current, 1); | |
1567 | #endif | |
f8b0aa25 FB |
1568 | unlock_user_struct(frame, frame_addr, 0); |
1569 | return env->regs[0]; | |
43fff238 FB |
1570 | |
1571 | badframe: | |
f8b0aa25 | 1572 | unlock_user_struct(frame, frame_addr, 0); |
66393fb9 | 1573 | force_sig(TARGET_SIGSEGV /* , current */); |
43fff238 FB |
1574 | return 0; |
1575 | } | |
1576 | ||
5f9099d9 PM |
1577 | static abi_ulong *restore_sigframe_v2_vfp(CPUState *env, abi_ulong *regspace) |
1578 | { | |
1579 | int i; | |
1580 | abi_ulong magic, sz; | |
1581 | uint32_t fpscr, fpexc; | |
1582 | struct target_vfp_sigframe *vfpframe; | |
1583 | vfpframe = (struct target_vfp_sigframe *)regspace; | |
1584 | ||
1585 | __get_user(magic, &vfpframe->magic); | |
1586 | __get_user(sz, &vfpframe->size); | |
1587 | if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) { | |
1588 | return 0; | |
1589 | } | |
1590 | for (i = 0; i < 32; i++) { | |
005e1a0a | 1591 | __get_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]); |
5f9099d9 PM |
1592 | } |
1593 | __get_user(fpscr, &vfpframe->ufp.fpscr); | |
1594 | vfp_set_fpscr(env, fpscr); | |
1595 | __get_user(fpexc, &vfpframe->ufp_exc.fpexc); | |
1596 | /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid | |
1597 | * and the exception flag is cleared | |
1598 | */ | |
1599 | fpexc |= (1 << 30); | |
1600 | fpexc &= ~((1 << 31) | (1 << 28)); | |
1601 | env->vfp.xregs[ARM_VFP_FPEXC] = fpexc; | |
1602 | __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst); | |
1603 | __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2); | |
1604 | return (abi_ulong*)(vfpframe + 1); | |
1605 | } | |
1606 | ||
a59d69da PM |
1607 | static abi_ulong *restore_sigframe_v2_iwmmxt(CPUState *env, abi_ulong *regspace) |
1608 | { | |
1609 | int i; | |
1610 | abi_ulong magic, sz; | |
1611 | struct target_iwmmxt_sigframe *iwmmxtframe; | |
1612 | iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace; | |
1613 | ||
1614 | __get_user(magic, &iwmmxtframe->magic); | |
1615 | __get_user(sz, &iwmmxtframe->size); | |
1616 | if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) { | |
1617 | return 0; | |
1618 | } | |
1619 | for (i = 0; i < 16; i++) { | |
1620 | __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]); | |
1621 | } | |
1622 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf); | |
1623 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf); | |
1624 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0); | |
1625 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1); | |
1626 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2); | |
1627 | __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3); | |
1628 | return (abi_ulong*)(iwmmxtframe + 1); | |
1629 | } | |
1630 | ||
a8c33204 PB |
1631 | static int do_sigframe_return_v2(CPUState *env, target_ulong frame_addr, |
1632 | struct target_ucontext_v2 *uc) | |
1633 | { | |
1634 | sigset_t host_set; | |
5f9099d9 | 1635 | abi_ulong *regspace; |
a8c33204 PB |
1636 | |
1637 | target_to_host_sigset(&host_set, &uc->tuc_sigmask); | |
1638 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
1639 | ||
1640 | if (restore_sigcontext(env, &uc->tuc_mcontext)) | |
1641 | return 1; | |
1642 | ||
5f9099d9 PM |
1643 | /* Restore coprocessor signal frame */ |
1644 | regspace = uc->tuc_regspace; | |
1645 | if (arm_feature(env, ARM_FEATURE_VFP)) { | |
1646 | regspace = restore_sigframe_v2_vfp(env, regspace); | |
1647 | if (!regspace) { | |
1648 | return 1; | |
1649 | } | |
1650 | } | |
a59d69da PM |
1651 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
1652 | regspace = restore_sigframe_v2_iwmmxt(env, regspace); | |
1653 | if (!regspace) { | |
1654 | return 1; | |
1655 | } | |
1656 | } | |
5f9099d9 | 1657 | |
a8c33204 PB |
1658 | if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) |
1659 | return 1; | |
1660 | ||
1661 | #if 0 | |
1662 | /* Send SIGTRAP if we're single-stepping */ | |
1663 | if (ptrace_cancel_bpt(current)) | |
1664 | send_sig(SIGTRAP, current, 1); | |
1665 | #endif | |
1666 | ||
1667 | return 0; | |
1668 | } | |
1669 | ||
dc7eea67 | 1670 | static long do_sigreturn_v2(CPUState *env) |
a8c33204 PB |
1671 | { |
1672 | abi_ulong frame_addr; | |
1673 | struct sigframe_v2 *frame; | |
1674 | ||
1675 | /* | |
1676 | * Since we stacked the signal on a 64-bit boundary, | |
1677 | * then 'sp' should be word aligned here. If it's | |
1678 | * not, then the user is trying to mess with us. | |
1679 | */ | |
1680 | if (env->regs[13] & 7) | |
1681 | goto badframe; | |
1682 | ||
1683 | frame_addr = env->regs[13]; | |
1684 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1685 | goto badframe; | |
1686 | ||
1687 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) | |
1688 | goto badframe; | |
1689 | ||
1690 | unlock_user_struct(frame, frame_addr, 0); | |
1691 | return env->regs[0]; | |
1692 | ||
1693 | badframe: | |
1694 | unlock_user_struct(frame, frame_addr, 0); | |
66393fb9 | 1695 | force_sig(TARGET_SIGSEGV /* , current */); |
a8c33204 PB |
1696 | return 0; |
1697 | } | |
1698 | ||
1699 | long do_sigreturn(CPUState *env) | |
1700 | { | |
1701 | if (get_osversion() >= 0x020612) { | |
1702 | return do_sigreturn_v2(env); | |
1703 | } else { | |
1704 | return do_sigreturn_v1(env); | |
1705 | } | |
1706 | } | |
1707 | ||
dc7eea67 | 1708 | static long do_rt_sigreturn_v1(CPUState *env) |
43fff238 | 1709 | { |
f8b0aa25 | 1710 | abi_ulong frame_addr; |
a745ec6d PB |
1711 | struct rt_sigframe_v1 *frame; |
1712 | sigset_t host_set; | |
1713 | ||
1714 | /* | |
1715 | * Since we stacked the signal on a 64-bit boundary, | |
1716 | * then 'sp' should be word aligned here. If it's | |
1717 | * not, then the user is trying to mess with us. | |
1718 | */ | |
1719 | if (env->regs[13] & 7) | |
1720 | goto badframe; | |
1721 | ||
1722 | frame_addr = env->regs[13]; | |
1723 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1724 | goto badframe; | |
1725 | ||
1726 | target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); | |
1727 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
1728 | ||
1729 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) | |
1730 | goto badframe; | |
1731 | ||
1732 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) | |
1733 | goto badframe; | |
1734 | ||
1735 | #if 0 | |
1736 | /* Send SIGTRAP if we're single-stepping */ | |
1737 | if (ptrace_cancel_bpt(current)) | |
1738 | send_sig(SIGTRAP, current, 1); | |
1739 | #endif | |
1740 | unlock_user_struct(frame, frame_addr, 0); | |
1741 | return env->regs[0]; | |
1742 | ||
1743 | badframe: | |
1744 | unlock_user_struct(frame, frame_addr, 0); | |
66393fb9 | 1745 | force_sig(TARGET_SIGSEGV /* , current */); |
a745ec6d PB |
1746 | return 0; |
1747 | } | |
1748 | ||
dc7eea67 | 1749 | static long do_rt_sigreturn_v2(CPUState *env) |
a745ec6d PB |
1750 | { |
1751 | abi_ulong frame_addr; | |
1752 | struct rt_sigframe_v2 *frame; | |
43fff238 FB |
1753 | |
1754 | /* | |
1755 | * Since we stacked the signal on a 64-bit boundary, | |
1756 | * then 'sp' should be word aligned here. If it's | |
1757 | * not, then the user is trying to mess with us. | |
1758 | */ | |
1759 | if (env->regs[13] & 7) | |
1760 | goto badframe; | |
1761 | ||
f8b0aa25 FB |
1762 | frame_addr = env->regs[13]; |
1763 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1764 | goto badframe; | |
43fff238 | 1765 | |
a8c33204 PB |
1766 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) |
1767 | goto badframe; | |
a04e134a | 1768 | |
f8b0aa25 | 1769 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
1770 | return env->regs[0]; |
1771 | ||
1772 | badframe: | |
f8b0aa25 | 1773 | unlock_user_struct(frame, frame_addr, 0); |
66393fb9 | 1774 | force_sig(TARGET_SIGSEGV /* , current */); |
43fff238 FB |
1775 | return 0; |
1776 | } | |
1777 | ||
a745ec6d PB |
1778 | long do_rt_sigreturn(CPUState *env) |
1779 | { | |
1780 | if (get_osversion() >= 0x020612) { | |
1781 | return do_rt_sigreturn_v2(env); | |
1782 | } else { | |
1783 | return do_rt_sigreturn_v1(env); | |
1784 | } | |
1785 | } | |
1786 | ||
6d5e216d | 1787 | #elif defined(TARGET_SPARC) |
80a9d035 | 1788 | |
6d5e216d FB |
1789 | #define __SUNOS_MAXWIN 31 |
1790 | ||
1791 | /* This is what SunOS does, so shall I. */ | |
1792 | struct target_sigcontext { | |
992f48a0 | 1793 | abi_ulong sigc_onstack; /* state to restore */ |
6d5e216d | 1794 | |
992f48a0 BS |
1795 | abi_ulong sigc_mask; /* sigmask to restore */ |
1796 | abi_ulong sigc_sp; /* stack pointer */ | |
1797 | abi_ulong sigc_pc; /* program counter */ | |
1798 | abi_ulong sigc_npc; /* next program counter */ | |
1799 | abi_ulong sigc_psr; /* for condition codes etc */ | |
1800 | abi_ulong sigc_g1; /* User uses these two registers */ | |
1801 | abi_ulong sigc_o0; /* within the trampoline code. */ | |
6d5e216d FB |
1802 | |
1803 | /* Now comes information regarding the users window set | |
1804 | * at the time of the signal. | |
1805 | */ | |
992f48a0 | 1806 | abi_ulong sigc_oswins; /* outstanding windows */ |
6d5e216d FB |
1807 | |
1808 | /* stack ptrs for each regwin buf */ | |
1809 | char *sigc_spbuf[__SUNOS_MAXWIN]; | |
1810 | ||
1811 | /* Windows to restore after signal */ | |
1812 | struct { | |
992f48a0 BS |
1813 | abi_ulong locals[8]; |
1814 | abi_ulong ins[8]; | |
6d5e216d FB |
1815 | } sigc_wbuf[__SUNOS_MAXWIN]; |
1816 | }; | |
1817 | /* A Sparc stack frame */ | |
1818 | struct sparc_stackf { | |
992f48a0 | 1819 | abi_ulong locals[8]; |
e321c34a PM |
1820 | abi_ulong ins[8]; |
1821 | /* It's simpler to treat fp and callers_pc as elements of ins[] | |
1822 | * since we never need to access them ourselves. | |
1823 | */ | |
6d5e216d | 1824 | char *structptr; |
992f48a0 BS |
1825 | abi_ulong xargs[6]; |
1826 | abi_ulong xxargs[1]; | |
6d5e216d FB |
1827 | }; |
1828 | ||
1829 | typedef struct { | |
1830 | struct { | |
992f48a0 BS |
1831 | abi_ulong psr; |
1832 | abi_ulong pc; | |
1833 | abi_ulong npc; | |
1834 | abi_ulong y; | |
1835 | abi_ulong u_regs[16]; /* globals and ins */ | |
6d5e216d FB |
1836 | } si_regs; |
1837 | int si_mask; | |
1838 | } __siginfo_t; | |
1839 | ||
1840 | typedef struct { | |
1841 | unsigned long si_float_regs [32]; | |
1842 | unsigned long si_fsr; | |
1843 | unsigned long si_fpqdepth; | |
1844 | struct { | |
1845 | unsigned long *insn_addr; | |
1846 | unsigned long insn; | |
1847 | } si_fpqueue [16]; | |
c227f099 | 1848 | } qemu_siginfo_fpu_t; |
6d5e216d FB |
1849 | |
1850 | ||
1851 | struct target_signal_frame { | |
1852 | struct sparc_stackf ss; | |
1853 | __siginfo_t info; | |
f8b0aa25 | 1854 | abi_ulong fpu_save; |
992f48a0 BS |
1855 | abi_ulong insns[2] __attribute__ ((aligned (8))); |
1856 | abi_ulong extramask[TARGET_NSIG_WORDS - 1]; | |
1857 | abi_ulong extra_size; /* Should be 0 */ | |
c227f099 | 1858 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
1859 | }; |
1860 | struct target_rt_signal_frame { | |
1861 | struct sparc_stackf ss; | |
1862 | siginfo_t info; | |
992f48a0 | 1863 | abi_ulong regs[20]; |
6d5e216d | 1864 | sigset_t mask; |
f8b0aa25 | 1865 | abi_ulong fpu_save; |
6d5e216d FB |
1866 | unsigned int insns[2]; |
1867 | stack_t stack; | |
1868 | unsigned int extra_size; /* Should be 0 */ | |
c227f099 | 1869 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
1870 | }; |
1871 | ||
e80cfcfc FB |
1872 | #define UREG_O0 16 |
1873 | #define UREG_O6 22 | |
1874 | #define UREG_I0 0 | |
1875 | #define UREG_I1 1 | |
1876 | #define UREG_I2 2 | |
5bfb56b2 BS |
1877 | #define UREG_I3 3 |
1878 | #define UREG_I4 4 | |
1879 | #define UREG_I5 5 | |
e80cfcfc FB |
1880 | #define UREG_I6 6 |
1881 | #define UREG_I7 7 | |
1882 | #define UREG_L0 8 | |
6d5e216d FB |
1883 | #define UREG_FP UREG_I6 |
1884 | #define UREG_SP UREG_O6 | |
1885 | ||
624f7979 | 1886 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, |
459a4017 | 1887 | CPUState *env, unsigned long framesize) |
6d5e216d | 1888 | { |
459a4017 | 1889 | abi_ulong sp; |
6d5e216d FB |
1890 | |
1891 | sp = env->regwptr[UREG_FP]; | |
6d5e216d FB |
1892 | |
1893 | /* This is the X/Open sanctioned signal stack switching. */ | |
624f7979 | 1894 | if (sa->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
1895 | if (!on_sig_stack(sp) |
1896 | && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7)) | |
1897 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
6d5e216d | 1898 | } |
459a4017 | 1899 | return sp - framesize; |
6d5e216d FB |
1900 | } |
1901 | ||
1902 | static int | |
992f48a0 | 1903 | setup___siginfo(__siginfo_t *si, CPUState *env, abi_ulong mask) |
6d5e216d FB |
1904 | { |
1905 | int err = 0, i; | |
1906 | ||
6d5e216d | 1907 | err |= __put_user(env->psr, &si->si_regs.psr); |
6d5e216d FB |
1908 | err |= __put_user(env->pc, &si->si_regs.pc); |
1909 | err |= __put_user(env->npc, &si->si_regs.npc); | |
1910 | err |= __put_user(env->y, &si->si_regs.y); | |
a315a145 | 1911 | for (i=0; i < 8; i++) { |
6d5e216d FB |
1912 | err |= __put_user(env->gregs[i], &si->si_regs.u_regs[i]); |
1913 | } | |
a315a145 | 1914 | for (i=0; i < 8; i++) { |
e80cfcfc | 1915 | err |= __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]); |
6d5e216d | 1916 | } |
6d5e216d FB |
1917 | err |= __put_user(mask, &si->si_mask); |
1918 | return err; | |
1919 | } | |
e80cfcfc | 1920 | |
80a9d035 | 1921 | #if 0 |
6d5e216d FB |
1922 | static int |
1923 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ | |
1924 | CPUState *env, unsigned long mask) | |
1925 | { | |
1926 | int err = 0; | |
1927 | ||
1928 | err |= __put_user(mask, &sc->sigc_mask); | |
1929 | err |= __put_user(env->regwptr[UREG_SP], &sc->sigc_sp); | |
1930 | err |= __put_user(env->pc, &sc->sigc_pc); | |
1931 | err |= __put_user(env->npc, &sc->sigc_npc); | |
1932 | err |= __put_user(env->psr, &sc->sigc_psr); | |
1933 | err |= __put_user(env->gregs[1], &sc->sigc_g1); | |
1934 | err |= __put_user(env->regwptr[UREG_O0], &sc->sigc_o0); | |
1935 | ||
1936 | return err; | |
1937 | } | |
80a9d035 | 1938 | #endif |
6d5e216d FB |
1939 | #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7))) |
1940 | ||
624f7979 | 1941 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 1942 | target_sigset_t *set, CPUState *env) |
6d5e216d | 1943 | { |
459a4017 | 1944 | abi_ulong sf_addr; |
6d5e216d FB |
1945 | struct target_signal_frame *sf; |
1946 | int sigframe_size, err, i; | |
1947 | ||
1948 | /* 1. Make sure everything is clean */ | |
1949 | //synchronize_user_stack(); | |
1950 | ||
1951 | sigframe_size = NF_ALIGNEDSZ; | |
459a4017 | 1952 | sf_addr = get_sigframe(ka, env, sigframe_size); |
6d5e216d | 1953 | |
459a4017 FB |
1954 | sf = lock_user(VERIFY_WRITE, sf_addr, |
1955 | sizeof(struct target_signal_frame), 0); | |
1956 | if (!sf) | |
1957 | goto sigsegv; | |
1958 | ||
e80cfcfc | 1959 | //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); |
6d5e216d FB |
1960 | #if 0 |
1961 | if (invalid_frame_pointer(sf, sigframe_size)) | |
1962 | goto sigill_and_return; | |
1963 | #endif | |
1964 | /* 2. Save the current process state */ | |
1965 | err = setup___siginfo(&sf->info, env, set->sig[0]); | |
1966 | err |= __put_user(0, &sf->extra_size); | |
1967 | ||
1968 | //err |= save_fpu_state(regs, &sf->fpu_state); | |
1969 | //err |= __put_user(&sf->fpu_state, &sf->fpu_save); | |
1970 | ||
1971 | err |= __put_user(set->sig[0], &sf->info.si_mask); | |
1972 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
1973 | err |= __put_user(set->sig[i + 1], &sf->extramask[i]); | |
1974 | } | |
1975 | ||
a315a145 | 1976 | for (i = 0; i < 8; i++) { |
e80cfcfc | 1977 | err |= __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]); |
6d5e216d | 1978 | } |
a315a145 | 1979 | for (i = 0; i < 8; i++) { |
e80cfcfc | 1980 | err |= __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]); |
6d5e216d | 1981 | } |
6d5e216d FB |
1982 | if (err) |
1983 | goto sigsegv; | |
1984 | ||
1985 | /* 3. signal handler back-trampoline and parameters */ | |
459a4017 | 1986 | env->regwptr[UREG_FP] = sf_addr; |
6d5e216d | 1987 | env->regwptr[UREG_I0] = sig; |
459a4017 FB |
1988 | env->regwptr[UREG_I1] = sf_addr + |
1989 | offsetof(struct target_signal_frame, info); | |
1990 | env->regwptr[UREG_I2] = sf_addr + | |
1991 | offsetof(struct target_signal_frame, info); | |
6d5e216d FB |
1992 | |
1993 | /* 4. signal handler */ | |
624f7979 | 1994 | env->pc = ka->_sa_handler; |
6d5e216d FB |
1995 | env->npc = (env->pc + 4); |
1996 | /* 5. return to kernel instructions */ | |
624f7979 PB |
1997 | if (ka->sa_restorer) |
1998 | env->regwptr[UREG_I7] = ka->sa_restorer; | |
6d5e216d | 1999 | else { |
775b58d8 | 2000 | uint32_t val32; |
459a4017 FB |
2001 | |
2002 | env->regwptr[UREG_I7] = sf_addr + | |
2003 | offsetof(struct target_signal_frame, insns) - 2 * 4; | |
6d5e216d FB |
2004 | |
2005 | /* mov __NR_sigreturn, %g1 */ | |
775b58d8 FB |
2006 | val32 = 0x821020d8; |
2007 | err |= __put_user(val32, &sf->insns[0]); | |
6d5e216d FB |
2008 | |
2009 | /* t 0x10 */ | |
775b58d8 FB |
2010 | val32 = 0x91d02010; |
2011 | err |= __put_user(val32, &sf->insns[1]); | |
6d5e216d FB |
2012 | if (err) |
2013 | goto sigsegv; | |
2014 | ||
2015 | /* Flush instruction space. */ | |
2016 | //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0])); | |
80a9d035 | 2017 | // tb_flush(env); |
6d5e216d | 2018 | } |
459a4017 | 2019 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d | 2020 | return; |
459a4017 FB |
2021 | #if 0 |
2022 | sigill_and_return: | |
6d5e216d | 2023 | force_sig(TARGET_SIGILL); |
459a4017 | 2024 | #endif |
6d5e216d | 2025 | sigsegv: |
e80cfcfc | 2026 | //fprintf(stderr, "force_sig\n"); |
459a4017 | 2027 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d FB |
2028 | force_sig(TARGET_SIGSEGV); |
2029 | } | |
2030 | static inline int | |
c227f099 | 2031 | restore_fpu_state(CPUState *env, qemu_siginfo_fpu_t *fpu) |
6d5e216d FB |
2032 | { |
2033 | int err; | |
2034 | #if 0 | |
2035 | #ifdef CONFIG_SMP | |
2036 | if (current->flags & PF_USEDFPU) | |
2037 | regs->psr &= ~PSR_EF; | |
2038 | #else | |
2039 | if (current == last_task_used_math) { | |
2040 | last_task_used_math = 0; | |
2041 | regs->psr &= ~PSR_EF; | |
2042 | } | |
2043 | #endif | |
2044 | current->used_math = 1; | |
2045 | current->flags &= ~PF_USEDFPU; | |
2046 | #endif | |
2047 | #if 0 | |
2048 | if (verify_area (VERIFY_READ, fpu, sizeof(*fpu))) | |
2049 | return -EFAULT; | |
2050 | #endif | |
2051 | ||
fafffaef FB |
2052 | #if 0 |
2053 | /* XXX: incorrect */ | |
6d5e216d FB |
2054 | err = __copy_from_user(&env->fpr[0], &fpu->si_float_regs[0], |
2055 | (sizeof(unsigned long) * 32)); | |
fafffaef | 2056 | #endif |
6d5e216d FB |
2057 | err |= __get_user(env->fsr, &fpu->si_fsr); |
2058 | #if 0 | |
2059 | err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth); | |
2060 | if (current->thread.fpqdepth != 0) | |
2061 | err |= __copy_from_user(¤t->thread.fpqueue[0], | |
2062 | &fpu->si_fpqueue[0], | |
2063 | ((sizeof(unsigned long) + | |
2064 | (sizeof(unsigned long *)))*16)); | |
2065 | #endif | |
2066 | return err; | |
2067 | } | |
2068 | ||
2069 | ||
624f7979 | 2070 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
2071 | target_siginfo_t *info, |
2072 | target_sigset_t *set, CPUState *env) | |
6d5e216d FB |
2073 | { |
2074 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2075 | } | |
2076 | ||
2077 | long do_sigreturn(CPUState *env) | |
2078 | { | |
f8b0aa25 | 2079 | abi_ulong sf_addr; |
6d5e216d | 2080 | struct target_signal_frame *sf; |
e80cfcfc | 2081 | uint32_t up_psr, pc, npc; |
c227f099 | 2082 | target_sigset_t set; |
e80cfcfc | 2083 | sigset_t host_set; |
f8b0aa25 | 2084 | abi_ulong fpu_save_addr; |
e80cfcfc | 2085 | int err, i; |
6d5e216d | 2086 | |
f8b0aa25 FB |
2087 | sf_addr = env->regwptr[UREG_FP]; |
2088 | if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) | |
2089 | goto segv_and_exit; | |
80a9d035 | 2090 | #if 0 |
e80cfcfc FB |
2091 | fprintf(stderr, "sigreturn\n"); |
2092 | fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); | |
80a9d035 | 2093 | #endif |
e80cfcfc | 2094 | //cpu_dump_state(env, stderr, fprintf, 0); |
6d5e216d FB |
2095 | |
2096 | /* 1. Make sure we are not getting garbage from the user */ | |
6d5e216d | 2097 | |
f8b0aa25 | 2098 | if (sf_addr & 3) |
6d5e216d FB |
2099 | goto segv_and_exit; |
2100 | ||
2101 | err = __get_user(pc, &sf->info.si_regs.pc); | |
2102 | err |= __get_user(npc, &sf->info.si_regs.npc); | |
2103 | ||
6d5e216d FB |
2104 | if ((pc | npc) & 3) |
2105 | goto segv_and_exit; | |
2106 | ||
2107 | /* 2. Restore the state */ | |
e80cfcfc FB |
2108 | err |= __get_user(up_psr, &sf->info.si_regs.psr); |
2109 | ||
6d5e216d | 2110 | /* User can only change condition codes and FPU enabling in %psr. */ |
a315a145 FB |
2111 | env->psr = (up_psr & (PSR_ICC /* | PSR_EF */)) |
2112 | | (env->psr & ~(PSR_ICC /* | PSR_EF */)); | |
2113 | ||
2114 | env->pc = pc; | |
2115 | env->npc = npc; | |
e80cfcfc | 2116 | err |= __get_user(env->y, &sf->info.si_regs.y); |
a315a145 | 2117 | for (i=0; i < 8; i++) { |
e80cfcfc FB |
2118 | err |= __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]); |
2119 | } | |
a315a145 | 2120 | for (i=0; i < 8; i++) { |
e80cfcfc FB |
2121 | err |= __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]); |
2122 | } | |
6d5e216d | 2123 | |
f8b0aa25 | 2124 | err |= __get_user(fpu_save_addr, &sf->fpu_save); |
6d5e216d | 2125 | |
e80cfcfc FB |
2126 | //if (fpu_save) |
2127 | // err |= restore_fpu_state(env, fpu_save); | |
6d5e216d FB |
2128 | |
2129 | /* This is pretty much atomic, no amount locking would prevent | |
2130 | * the races which exist anyways. | |
2131 | */ | |
2132 | err |= __get_user(set.sig[0], &sf->info.si_mask); | |
e80cfcfc FB |
2133 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
2134 | err |= (__get_user(set.sig[i], &sf->extramask[i - 1])); | |
2135 | } | |
2136 | ||
2137 | target_to_host_sigset_internal(&host_set, &set); | |
2138 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
6d5e216d FB |
2139 | |
2140 | if (err) | |
2141 | goto segv_and_exit; | |
f8b0aa25 | 2142 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
2143 | return env->regwptr[0]; |
2144 | ||
2145 | segv_and_exit: | |
f8b0aa25 | 2146 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
2147 | force_sig(TARGET_SIGSEGV); |
2148 | } | |
2149 | ||
2150 | long do_rt_sigreturn(CPUState *env) | |
2151 | { | |
2152 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2153 | return -TARGET_ENOSYS; |
6d5e216d FB |
2154 | } |
2155 | ||
459a4017 | 2156 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) |
5bfb56b2 BS |
2157 | #define MC_TSTATE 0 |
2158 | #define MC_PC 1 | |
2159 | #define MC_NPC 2 | |
2160 | #define MC_Y 3 | |
2161 | #define MC_G1 4 | |
2162 | #define MC_G2 5 | |
2163 | #define MC_G3 6 | |
2164 | #define MC_G4 7 | |
2165 | #define MC_G5 8 | |
2166 | #define MC_G6 9 | |
2167 | #define MC_G7 10 | |
2168 | #define MC_O0 11 | |
2169 | #define MC_O1 12 | |
2170 | #define MC_O2 13 | |
2171 | #define MC_O3 14 | |
2172 | #define MC_O4 15 | |
2173 | #define MC_O5 16 | |
2174 | #define MC_O6 17 | |
2175 | #define MC_O7 18 | |
2176 | #define MC_NGREG 19 | |
2177 | ||
c227f099 AL |
2178 | typedef abi_ulong target_mc_greg_t; |
2179 | typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG]; | |
5bfb56b2 BS |
2180 | |
2181 | struct target_mc_fq { | |
992f48a0 | 2182 | abi_ulong *mcfq_addr; |
5bfb56b2 BS |
2183 | uint32_t mcfq_insn; |
2184 | }; | |
2185 | ||
2186 | struct target_mc_fpu { | |
2187 | union { | |
2188 | uint32_t sregs[32]; | |
2189 | uint64_t dregs[32]; | |
2190 | //uint128_t qregs[16]; | |
2191 | } mcfpu_fregs; | |
992f48a0 BS |
2192 | abi_ulong mcfpu_fsr; |
2193 | abi_ulong mcfpu_fprs; | |
2194 | abi_ulong mcfpu_gsr; | |
5bfb56b2 BS |
2195 | struct target_mc_fq *mcfpu_fq; |
2196 | unsigned char mcfpu_qcnt; | |
2197 | unsigned char mcfpu_qentsz; | |
2198 | unsigned char mcfpu_enab; | |
2199 | }; | |
c227f099 | 2200 | typedef struct target_mc_fpu target_mc_fpu_t; |
5bfb56b2 BS |
2201 | |
2202 | typedef struct { | |
c227f099 AL |
2203 | target_mc_gregset_t mc_gregs; |
2204 | target_mc_greg_t mc_fp; | |
2205 | target_mc_greg_t mc_i7; | |
2206 | target_mc_fpu_t mc_fpregs; | |
2207 | } target_mcontext_t; | |
5bfb56b2 BS |
2208 | |
2209 | struct target_ucontext { | |
60e99246 AJ |
2210 | struct target_ucontext *tuc_link; |
2211 | abi_ulong tuc_flags; | |
2212 | target_sigset_t tuc_sigmask; | |
2213 | target_mcontext_t tuc_mcontext; | |
5bfb56b2 BS |
2214 | }; |
2215 | ||
2216 | /* A V9 register window */ | |
2217 | struct target_reg_window { | |
992f48a0 BS |
2218 | abi_ulong locals[8]; |
2219 | abi_ulong ins[8]; | |
5bfb56b2 BS |
2220 | }; |
2221 | ||
2222 | #define TARGET_STACK_BIAS 2047 | |
2223 | ||
2224 | /* {set, get}context() needed for 64-bit SparcLinux userland. */ | |
2225 | void sparc64_set_context(CPUSPARCState *env) | |
2226 | { | |
459a4017 FB |
2227 | abi_ulong ucp_addr; |
2228 | struct target_ucontext *ucp; | |
c227f099 | 2229 | target_mc_gregset_t *grp; |
992f48a0 | 2230 | abi_ulong pc, npc, tstate; |
459a4017 | 2231 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2232 | unsigned char fenab; |
2233 | int err; | |
2234 | unsigned int i; | |
5bfb56b2 | 2235 | |
459a4017 FB |
2236 | ucp_addr = env->regwptr[UREG_I0]; |
2237 | if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) | |
2238 | goto do_sigsegv; | |
60e99246 | 2239 | grp = &ucp->tuc_mcontext.mc_gregs; |
579a97f7 FB |
2240 | err = __get_user(pc, &((*grp)[MC_PC])); |
2241 | err |= __get_user(npc, &((*grp)[MC_NPC])); | |
5bfb56b2 BS |
2242 | if (err || ((pc | npc) & 3)) |
2243 | goto do_sigsegv; | |
2244 | if (env->regwptr[UREG_I1]) { | |
c227f099 | 2245 | target_sigset_t target_set; |
5bfb56b2 BS |
2246 | sigset_t set; |
2247 | ||
2248 | if (TARGET_NSIG_WORDS == 1) { | |
60e99246 | 2249 | if (__get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0])) |
5bfb56b2 BS |
2250 | goto do_sigsegv; |
2251 | } else { | |
459a4017 | 2252 | abi_ulong *src, *dst; |
60e99246 | 2253 | src = ucp->tuc_sigmask.sig; |
459a4017 | 2254 | dst = target_set.sig; |
c227f099 | 2255 | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
5bfb56b2 | 2256 | i++, dst++, src++) |
459a4017 | 2257 | err |= __get_user(*dst, src); |
5bfb56b2 BS |
2258 | if (err) |
2259 | goto do_sigsegv; | |
2260 | } | |
2261 | target_to_host_sigset_internal(&set, &target_set); | |
2262 | sigprocmask(SIG_SETMASK, &set, NULL); | |
2263 | } | |
2264 | env->pc = pc; | |
2265 | env->npc = npc; | |
579a97f7 FB |
2266 | err |= __get_user(env->y, &((*grp)[MC_Y])); |
2267 | err |= __get_user(tstate, &((*grp)[MC_TSTATE])); | |
5bfb56b2 | 2268 | env->asi = (tstate >> 24) & 0xff; |
5a834bb4 BS |
2269 | cpu_put_ccr(env, tstate >> 32); |
2270 | cpu_put_cwp64(env, tstate & 0x1f); | |
579a97f7 FB |
2271 | err |= __get_user(env->gregs[1], (&(*grp)[MC_G1])); |
2272 | err |= __get_user(env->gregs[2], (&(*grp)[MC_G2])); | |
2273 | err |= __get_user(env->gregs[3], (&(*grp)[MC_G3])); | |
2274 | err |= __get_user(env->gregs[4], (&(*grp)[MC_G4])); | |
2275 | err |= __get_user(env->gregs[5], (&(*grp)[MC_G5])); | |
2276 | err |= __get_user(env->gregs[6], (&(*grp)[MC_G6])); | |
2277 | err |= __get_user(env->gregs[7], (&(*grp)[MC_G7])); | |
2278 | err |= __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0])); | |
2279 | err |= __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1])); | |
2280 | err |= __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2])); | |
2281 | err |= __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3])); | |
2282 | err |= __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4])); | |
2283 | err |= __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5])); | |
2284 | err |= __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6])); | |
2285 | err |= __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7])); | |
2286 | ||
60e99246 AJ |
2287 | err |= __get_user(fp, &(ucp->tuc_mcontext.mc_fp)); |
2288 | err |= __get_user(i7, &(ucp->tuc_mcontext.mc_i7)); | |
579a97f7 | 2289 | |
459a4017 FB |
2290 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2291 | if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2292 | abi_ulong) != 0) | |
2293 | goto do_sigsegv; | |
2294 | if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2295 | abi_ulong) != 0) | |
2296 | goto do_sigsegv; | |
60e99246 AJ |
2297 | err |= __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab)); |
2298 | err |= __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs)); | |
459a4017 FB |
2299 | { |
2300 | uint32_t *src, *dst; | |
60e99246 | 2301 | src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
459a4017 FB |
2302 | dst = env->fpr; |
2303 | /* XXX: check that the CPU storage is the same as user context */ | |
2304 | for (i = 0; i < 64; i++, dst++, src++) | |
2305 | err |= __get_user(*dst, src); | |
2306 | } | |
579a97f7 | 2307 | err |= __get_user(env->fsr, |
60e99246 | 2308 | &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr)); |
579a97f7 | 2309 | err |= __get_user(env->gsr, |
60e99246 | 2310 | &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr)); |
5bfb56b2 BS |
2311 | if (err) |
2312 | goto do_sigsegv; | |
459a4017 | 2313 | unlock_user_struct(ucp, ucp_addr, 0); |
5bfb56b2 BS |
2314 | return; |
2315 | do_sigsegv: | |
459a4017 | 2316 | unlock_user_struct(ucp, ucp_addr, 0); |
66393fb9 | 2317 | force_sig(TARGET_SIGSEGV); |
5bfb56b2 BS |
2318 | } |
2319 | ||
2320 | void sparc64_get_context(CPUSPARCState *env) | |
2321 | { | |
459a4017 FB |
2322 | abi_ulong ucp_addr; |
2323 | struct target_ucontext *ucp; | |
c227f099 AL |
2324 | target_mc_gregset_t *grp; |
2325 | target_mcontext_t *mcp; | |
459a4017 | 2326 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2327 | int err; |
2328 | unsigned int i; | |
c227f099 | 2329 | target_sigset_t target_set; |
5bfb56b2 BS |
2330 | sigset_t set; |
2331 | ||
459a4017 FB |
2332 | ucp_addr = env->regwptr[UREG_I0]; |
2333 | if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) | |
2334 | goto do_sigsegv; | |
2335 | ||
60e99246 | 2336 | mcp = &ucp->tuc_mcontext; |
5bfb56b2 BS |
2337 | grp = &mcp->mc_gregs; |
2338 | ||
2339 | /* Skip over the trap instruction, first. */ | |
2340 | env->pc = env->npc; | |
2341 | env->npc += 4; | |
2342 | ||
2343 | err = 0; | |
2344 | ||
2345 | sigprocmask(0, NULL, &set); | |
2346 | host_to_target_sigset_internal(&target_set, &set); | |
459a4017 | 2347 | if (TARGET_NSIG_WORDS == 1) { |
579a97f7 | 2348 | err |= __put_user(target_set.sig[0], |
60e99246 | 2349 | (abi_ulong *)&ucp->tuc_sigmask); |
459a4017 FB |
2350 | } else { |
2351 | abi_ulong *src, *dst; | |
2352 | src = target_set.sig; | |
60e99246 | 2353 | dst = ucp->tuc_sigmask.sig; |
c227f099 | 2354 | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
5bfb56b2 | 2355 | i++, dst++, src++) |
459a4017 | 2356 | err |= __put_user(*src, dst); |
5bfb56b2 BS |
2357 | if (err) |
2358 | goto do_sigsegv; | |
2359 | } | |
2360 | ||
459a4017 FB |
2361 | /* XXX: tstate must be saved properly */ |
2362 | // err |= __put_user(env->tstate, &((*grp)[MC_TSTATE])); | |
579a97f7 FB |
2363 | err |= __put_user(env->pc, &((*grp)[MC_PC])); |
2364 | err |= __put_user(env->npc, &((*grp)[MC_NPC])); | |
2365 | err |= __put_user(env->y, &((*grp)[MC_Y])); | |
2366 | err |= __put_user(env->gregs[1], &((*grp)[MC_G1])); | |
2367 | err |= __put_user(env->gregs[2], &((*grp)[MC_G2])); | |
2368 | err |= __put_user(env->gregs[3], &((*grp)[MC_G3])); | |
2369 | err |= __put_user(env->gregs[4], &((*grp)[MC_G4])); | |
2370 | err |= __put_user(env->gregs[5], &((*grp)[MC_G5])); | |
2371 | err |= __put_user(env->gregs[6], &((*grp)[MC_G6])); | |
2372 | err |= __put_user(env->gregs[7], &((*grp)[MC_G7])); | |
2373 | err |= __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0])); | |
2374 | err |= __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1])); | |
2375 | err |= __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2])); | |
2376 | err |= __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3])); | |
2377 | err |= __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4])); | |
2378 | err |= __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5])); | |
2379 | err |= __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6])); | |
2380 | err |= __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7])); | |
2381 | ||
459a4017 FB |
2382 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2383 | fp = i7 = 0; | |
2384 | if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2385 | abi_ulong) != 0) | |
2386 | goto do_sigsegv; | |
2387 | if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2388 | abi_ulong) != 0) | |
2389 | goto do_sigsegv; | |
579a97f7 FB |
2390 | err |= __put_user(fp, &(mcp->mc_fp)); |
2391 | err |= __put_user(i7, &(mcp->mc_i7)); | |
5bfb56b2 | 2392 | |
459a4017 FB |
2393 | { |
2394 | uint32_t *src, *dst; | |
2395 | src = env->fpr; | |
60e99246 | 2396 | dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
459a4017 FB |
2397 | /* XXX: check that the CPU storage is the same as user context */ |
2398 | for (i = 0; i < 64; i++, dst++, src++) | |
2399 | err |= __put_user(*src, dst); | |
2400 | } | |
579a97f7 FB |
2401 | err |= __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); |
2402 | err |= __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); | |
2403 | err |= __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs)); | |
5bfb56b2 BS |
2404 | |
2405 | if (err) | |
2406 | goto do_sigsegv; | |
459a4017 | 2407 | unlock_user_struct(ucp, ucp_addr, 1); |
5bfb56b2 BS |
2408 | return; |
2409 | do_sigsegv: | |
459a4017 | 2410 | unlock_user_struct(ucp, ucp_addr, 1); |
66393fb9 | 2411 | force_sig(TARGET_SIGSEGV); |
5bfb56b2 BS |
2412 | } |
2413 | #endif | |
d26bc211 | 2414 | #elif defined(TARGET_ABI_MIPSN64) |
540635ba TS |
2415 | |
2416 | # warning signal handling not implemented | |
2417 | ||
624f7979 | 2418 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 2419 | target_sigset_t *set, CPUState *env) |
540635ba TS |
2420 | { |
2421 | fprintf(stderr, "setup_frame: not implemented\n"); | |
2422 | } | |
2423 | ||
624f7979 | 2424 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
2425 | target_siginfo_t *info, |
2426 | target_sigset_t *set, CPUState *env) | |
540635ba TS |
2427 | { |
2428 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2429 | } | |
2430 | ||
2431 | long do_sigreturn(CPUState *env) | |
2432 | { | |
2433 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 2434 | return -TARGET_ENOSYS; |
540635ba TS |
2435 | } |
2436 | ||
2437 | long do_rt_sigreturn(CPUState *env) | |
2438 | { | |
2439 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2440 | return -TARGET_ENOSYS; |
540635ba TS |
2441 | } |
2442 | ||
d26bc211 | 2443 | #elif defined(TARGET_ABI_MIPSN32) |
540635ba TS |
2444 | |
2445 | # warning signal handling not implemented | |
2446 | ||
624f7979 | 2447 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 2448 | target_sigset_t *set, CPUState *env) |
540635ba TS |
2449 | { |
2450 | fprintf(stderr, "setup_frame: not implemented\n"); | |
2451 | } | |
2452 | ||
624f7979 | 2453 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
2454 | target_siginfo_t *info, |
2455 | target_sigset_t *set, CPUState *env) | |
540635ba TS |
2456 | { |
2457 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2458 | } | |
2459 | ||
2460 | long do_sigreturn(CPUState *env) | |
2461 | { | |
2462 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 2463 | return -TARGET_ENOSYS; |
540635ba TS |
2464 | } |
2465 | ||
2466 | long do_rt_sigreturn(CPUState *env) | |
2467 | { | |
2468 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2469 | return -TARGET_ENOSYS; |
540635ba TS |
2470 | } |
2471 | ||
d26bc211 | 2472 | #elif defined(TARGET_ABI_MIPSO32) |
106ec879 FB |
2473 | |
2474 | struct target_sigcontext { | |
2475 | uint32_t sc_regmask; /* Unused */ | |
2476 | uint32_t sc_status; | |
2477 | uint64_t sc_pc; | |
2478 | uint64_t sc_regs[32]; | |
2479 | uint64_t sc_fpregs[32]; | |
2480 | uint32_t sc_ownedfp; /* Unused */ | |
2481 | uint32_t sc_fpc_csr; | |
2482 | uint32_t sc_fpc_eir; /* Unused */ | |
2483 | uint32_t sc_used_math; | |
2484 | uint32_t sc_dsp; /* dsp status, was sc_ssflags */ | |
94c5495d | 2485 | uint32_t pad0; |
106ec879 FB |
2486 | uint64_t sc_mdhi; |
2487 | uint64_t sc_mdlo; | |
2488 | target_ulong sc_hi1; /* Was sc_cause */ | |
2489 | target_ulong sc_lo1; /* Was sc_badvaddr */ | |
2490 | target_ulong sc_hi2; /* Was sc_sigset[4] */ | |
2491 | target_ulong sc_lo2; | |
2492 | target_ulong sc_hi3; | |
2493 | target_ulong sc_lo3; | |
2494 | }; | |
2495 | ||
2496 | struct sigframe { | |
2497 | uint32_t sf_ass[4]; /* argument save space for o32 */ | |
2498 | uint32_t sf_code[2]; /* signal trampoline */ | |
2499 | struct target_sigcontext sf_sc; | |
c227f099 | 2500 | target_sigset_t sf_mask; |
106ec879 FB |
2501 | }; |
2502 | ||
0b1bcb00 | 2503 | struct target_ucontext { |
60e99246 AJ |
2504 | target_ulong tuc_flags; |
2505 | target_ulong tuc_link; | |
2506 | target_stack_t tuc_stack; | |
94c5495d | 2507 | target_ulong pad0; |
60e99246 AJ |
2508 | struct target_sigcontext tuc_mcontext; |
2509 | target_sigset_t tuc_sigmask; | |
0b1bcb00 PB |
2510 | }; |
2511 | ||
2512 | struct target_rt_sigframe { | |
2513 | uint32_t rs_ass[4]; /* argument save space for o32 */ | |
2514 | uint32_t rs_code[2]; /* signal trampoline */ | |
2515 | struct target_siginfo rs_info; | |
2516 | struct target_ucontext rs_uc; | |
2517 | }; | |
2518 | ||
106ec879 FB |
2519 | /* Install trampoline to jump back from signal handler */ |
2520 | static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall) | |
2521 | { | |
2522 | int err; | |
2523 | ||
2524 | /* | |
2525 | * Set up the return code ... | |
2526 | * | |
2527 | * li v0, __NR__foo_sigreturn | |
2528 | * syscall | |
2529 | */ | |
2530 | ||
2531 | err = __put_user(0x24020000 + syscall, tramp + 0); | |
2532 | err |= __put_user(0x0000000c , tramp + 1); | |
2533 | /* flush_cache_sigtramp((unsigned long) tramp); */ | |
2534 | return err; | |
2535 | } | |
2536 | ||
2537 | static inline int | |
2538 | setup_sigcontext(CPUState *regs, struct target_sigcontext *sc) | |
2539 | { | |
2540 | int err = 0; | |
2541 | ||
b5dc7732 | 2542 | err |= __put_user(regs->active_tc.PC, &sc->sc_pc); |
106ec879 | 2543 | |
b5dc7732 TS |
2544 | #define save_gp_reg(i) do { \ |
2545 | err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \ | |
106ec879 FB |
2546 | } while(0) |
2547 | __put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2); | |
2548 | save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6); | |
2549 | save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10); | |
2550 | save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14); | |
2551 | save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18); | |
2552 | save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22); | |
2553 | save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26); | |
2554 | save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30); | |
2555 | save_gp_reg(31); | |
388bb21a | 2556 | #undef save_gp_reg |
106ec879 | 2557 | |
b5dc7732 TS |
2558 | err |= __put_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2559 | err |= __put_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 FB |
2560 | |
2561 | /* Not used yet, but might be useful if we ever have DSP suppport */ | |
2562 | #if 0 | |
2563 | if (cpu_has_dsp) { | |
2564 | err |= __put_user(mfhi1(), &sc->sc_hi1); | |
2565 | err |= __put_user(mflo1(), &sc->sc_lo1); | |
2566 | err |= __put_user(mfhi2(), &sc->sc_hi2); | |
2567 | err |= __put_user(mflo2(), &sc->sc_lo2); | |
2568 | err |= __put_user(mfhi3(), &sc->sc_hi3); | |
2569 | err |= __put_user(mflo3(), &sc->sc_lo3); | |
2570 | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp); | |
2571 | } | |
2572 | /* same with 64 bit */ | |
388bb21a | 2573 | #ifdef CONFIG_64BIT |
106ec879 FB |
2574 | err |= __put_user(regs->hi, &sc->sc_hi[0]); |
2575 | err |= __put_user(regs->lo, &sc->sc_lo[0]); | |
2576 | if (cpu_has_dsp) { | |
2577 | err |= __put_user(mfhi1(), &sc->sc_hi[1]); | |
2578 | err |= __put_user(mflo1(), &sc->sc_lo[1]); | |
2579 | err |= __put_user(mfhi2(), &sc->sc_hi[2]); | |
2580 | err |= __put_user(mflo2(), &sc->sc_lo[2]); | |
2581 | err |= __put_user(mfhi3(), &sc->sc_hi[3]); | |
2582 | err |= __put_user(mflo3(), &sc->sc_lo[3]); | |
2583 | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp); | |
2584 | } | |
388bb21a TS |
2585 | #endif |
2586 | #endif | |
106ec879 | 2587 | |
388bb21a | 2588 | #if 0 |
106ec879 FB |
2589 | err |= __put_user(!!used_math(), &sc->sc_used_math); |
2590 | ||
2591 | if (!used_math()) | |
2592 | goto out; | |
2593 | ||
2594 | /* | |
2595 | * Save FPU state to signal context. Signal handler will "inherit" | |
2596 | * current FPU state. | |
2597 | */ | |
2598 | preempt_disable(); | |
2599 | ||
2600 | if (!is_fpu_owner()) { | |
2601 | own_fpu(); | |
2602 | restore_fp(current); | |
2603 | } | |
2604 | err |= save_fp_context(sc); | |
2605 | ||
2606 | preempt_enable(); | |
2607 | out: | |
2608 | #endif | |
2609 | return err; | |
2610 | } | |
2611 | ||
2612 | static inline int | |
2613 | restore_sigcontext(CPUState *regs, struct target_sigcontext *sc) | |
2614 | { | |
2615 | int err = 0; | |
2616 | ||
2617 | err |= __get_user(regs->CP0_EPC, &sc->sc_pc); | |
2618 | ||
b5dc7732 TS |
2619 | err |= __get_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2620 | err |= __get_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2621 | |
ead9360e | 2622 | #define restore_gp_reg(i) do { \ |
b5dc7732 | 2623 | err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \ |
106ec879 FB |
2624 | } while(0) |
2625 | restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3); | |
2626 | restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6); | |
2627 | restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9); | |
2628 | restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12); | |
2629 | restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15); | |
2630 | restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18); | |
2631 | restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21); | |
2632 | restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24); | |
2633 | restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27); | |
2634 | restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30); | |
2635 | restore_gp_reg(31); | |
388bb21a | 2636 | #undef restore_gp_reg |
106ec879 FB |
2637 | |
2638 | #if 0 | |
2639 | if (cpu_has_dsp) { | |
2640 | err |= __get_user(treg, &sc->sc_hi1); mthi1(treg); | |
2641 | err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg); | |
2642 | err |= __get_user(treg, &sc->sc_hi2); mthi2(treg); | |
2643 | err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg); | |
2644 | err |= __get_user(treg, &sc->sc_hi3); mthi3(treg); | |
2645 | err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg); | |
2646 | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); | |
2647 | } | |
388bb21a | 2648 | #ifdef CONFIG_64BIT |
106ec879 FB |
2649 | err |= __get_user(regs->hi, &sc->sc_hi[0]); |
2650 | err |= __get_user(regs->lo, &sc->sc_lo[0]); | |
2651 | if (cpu_has_dsp) { | |
2652 | err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg); | |
2653 | err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg); | |
2654 | err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg); | |
2655 | err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg); | |
2656 | err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg); | |
2657 | err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg); | |
2658 | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); | |
2659 | } | |
388bb21a | 2660 | #endif |
106ec879 FB |
2661 | |
2662 | err |= __get_user(used_math, &sc->sc_used_math); | |
2663 | conditional_used_math(used_math); | |
2664 | ||
2665 | preempt_disable(); | |
2666 | ||
2667 | if (used_math()) { | |
2668 | /* restore fpu context if we have used it before */ | |
2669 | own_fpu(); | |
2670 | err |= restore_fp_context(sc); | |
2671 | } else { | |
2672 | /* signal handler may have used FPU. Give it up. */ | |
2673 | lose_fpu(); | |
2674 | } | |
2675 | ||
2676 | preempt_enable(); | |
2677 | #endif | |
2678 | return err; | |
2679 | } | |
2680 | /* | |
2681 | * Determine which stack to use.. | |
2682 | */ | |
579a97f7 | 2683 | static inline abi_ulong |
624f7979 | 2684 | get_sigframe(struct target_sigaction *ka, CPUState *regs, size_t frame_size) |
106ec879 FB |
2685 | { |
2686 | unsigned long sp; | |
2687 | ||
2688 | /* Default to using normal stack */ | |
b5dc7732 | 2689 | sp = regs->active_tc.gpr[29]; |
106ec879 FB |
2690 | |
2691 | /* | |
2692 | * FPU emulator may have it's own trampoline active just | |
2693 | * above the user stack, 16-bytes before the next lowest | |
2694 | * 16 byte boundary. Try to avoid trashing it. | |
2695 | */ | |
2696 | sp -= 32; | |
2697 | ||
106ec879 | 2698 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 2699 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { |
a04e134a TS |
2700 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2701 | } | |
106ec879 | 2702 | |
579a97f7 | 2703 | return (sp - frame_size) & ~7; |
106ec879 FB |
2704 | } |
2705 | ||
579a97f7 | 2706 | /* compare linux/arch/mips/kernel/signal.c:setup_frame() */ |
624f7979 | 2707 | static void setup_frame(int sig, struct target_sigaction * ka, |
c227f099 | 2708 | target_sigset_t *set, CPUState *regs) |
106ec879 FB |
2709 | { |
2710 | struct sigframe *frame; | |
579a97f7 | 2711 | abi_ulong frame_addr; |
106ec879 FB |
2712 | int i; |
2713 | ||
579a97f7 FB |
2714 | frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
2715 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
106ec879 FB |
2716 | goto give_sigsegv; |
2717 | ||
2718 | install_sigtramp(frame->sf_code, TARGET_NR_sigreturn); | |
2719 | ||
2720 | if(setup_sigcontext(regs, &frame->sf_sc)) | |
2721 | goto give_sigsegv; | |
2722 | ||
2723 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
2724 | if(__put_user(set->sig[i], &frame->sf_mask.sig[i])) | |
2725 | goto give_sigsegv; | |
2726 | } | |
2727 | ||
2728 | /* | |
2729 | * Arguments to signal handler: | |
2730 | * | |
2731 | * a0 = signal number | |
2732 | * a1 = 0 (should be cause) | |
2733 | * a2 = pointer to struct sigcontext | |
2734 | * | |
2735 | * $25 and PC point to the signal handler, $29 points to the | |
2736 | * struct sigframe. | |
2737 | */ | |
b5dc7732 TS |
2738 | regs->active_tc.gpr[ 4] = sig; |
2739 | regs->active_tc.gpr[ 5] = 0; | |
2740 | regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc); | |
2741 | regs->active_tc.gpr[29] = frame_addr; | |
2742 | regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code); | |
106ec879 FB |
2743 | /* The original kernel code sets CP0_EPC to the handler |
2744 | * since it returns to userland using eret | |
2745 | * we cannot do this here, and we must set PC directly */ | |
b5dc7732 | 2746 | regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler; |
579a97f7 | 2747 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 FB |
2748 | return; |
2749 | ||
2750 | give_sigsegv: | |
579a97f7 | 2751 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 | 2752 | force_sig(TARGET_SIGSEGV/*, current*/); |
5fafdf24 | 2753 | return; |
106ec879 FB |
2754 | } |
2755 | ||
2756 | long do_sigreturn(CPUState *regs) | |
2757 | { | |
388bb21a | 2758 | struct sigframe *frame; |
579a97f7 | 2759 | abi_ulong frame_addr; |
388bb21a | 2760 | sigset_t blocked; |
c227f099 | 2761 | target_sigset_t target_set; |
388bb21a | 2762 | int i; |
106ec879 FB |
2763 | |
2764 | #if defined(DEBUG_SIGNAL) | |
388bb21a | 2765 | fprintf(stderr, "do_sigreturn\n"); |
106ec879 | 2766 | #endif |
b5dc7732 | 2767 | frame_addr = regs->active_tc.gpr[29]; |
579a97f7 | 2768 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
106ec879 FB |
2769 | goto badframe; |
2770 | ||
388bb21a | 2771 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
106ec879 FB |
2772 | if(__get_user(target_set.sig[i], &frame->sf_mask.sig[i])) |
2773 | goto badframe; | |
388bb21a | 2774 | } |
106ec879 | 2775 | |
388bb21a TS |
2776 | target_to_host_sigset_internal(&blocked, &target_set); |
2777 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
106ec879 | 2778 | |
388bb21a | 2779 | if (restore_sigcontext(regs, &frame->sf_sc)) |
106ec879 FB |
2780 | goto badframe; |
2781 | ||
2782 | #if 0 | |
388bb21a TS |
2783 | /* |
2784 | * Don't let your children do this ... | |
2785 | */ | |
2786 | __asm__ __volatile__( | |
106ec879 FB |
2787 | "move\t$29, %0\n\t" |
2788 | "j\tsyscall_exit" | |
2789 | :/* no outputs */ | |
2790 | :"r" (®s)); | |
388bb21a | 2791 | /* Unreached */ |
106ec879 | 2792 | #endif |
3b46e624 | 2793 | |
b5dc7732 | 2794 | regs->active_tc.PC = regs->CP0_EPC; |
388bb21a | 2795 | /* I am not sure this is right, but it seems to work |
106ec879 FB |
2796 | * maybe a problem with nested signals ? */ |
2797 | regs->CP0_EPC = 0; | |
0b1bcb00 | 2798 | return -TARGET_QEMU_ESIGRETURN; |
106ec879 FB |
2799 | |
2800 | badframe: | |
388bb21a TS |
2801 | force_sig(TARGET_SIGSEGV/*, current*/); |
2802 | return 0; | |
106ec879 FB |
2803 | } |
2804 | ||
624f7979 | 2805 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
2806 | target_siginfo_t *info, |
2807 | target_sigset_t *set, CPUState *env) | |
106ec879 | 2808 | { |
0b1bcb00 PB |
2809 | struct target_rt_sigframe *frame; |
2810 | abi_ulong frame_addr; | |
2811 | int i; | |
2812 | ||
2813 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
2814 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
2815 | goto give_sigsegv; | |
2816 | ||
2817 | install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn); | |
2818 | ||
2819 | copy_siginfo_to_user(&frame->rs_info, info); | |
2820 | ||
60e99246 AJ |
2821 | __put_user(0, &frame->rs_uc.tuc_flags); |
2822 | __put_user(0, &frame->rs_uc.tuc_link); | |
2823 | __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp); | |
2824 | __put_user(target_sigaltstack_used.ss_size, &frame->rs_uc.tuc_stack.ss_size); | |
0b1bcb00 | 2825 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
60e99246 | 2826 | &frame->rs_uc.tuc_stack.ss_flags); |
0b1bcb00 | 2827 | |
60e99246 | 2828 | setup_sigcontext(env, &frame->rs_uc.tuc_mcontext); |
0b1bcb00 PB |
2829 | |
2830 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
60e99246 | 2831 | __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]); |
0b1bcb00 PB |
2832 | } |
2833 | ||
2834 | /* | |
2835 | * Arguments to signal handler: | |
2836 | * | |
2837 | * a0 = signal number | |
2838 | * a1 = pointer to struct siginfo | |
2839 | * a2 = pointer to struct ucontext | |
2840 | * | |
2841 | * $25 and PC point to the signal handler, $29 points to the | |
2842 | * struct sigframe. | |
2843 | */ | |
2844 | env->active_tc.gpr[ 4] = sig; | |
2845 | env->active_tc.gpr[ 5] = frame_addr | |
2846 | + offsetof(struct target_rt_sigframe, rs_info); | |
2847 | env->active_tc.gpr[ 6] = frame_addr | |
2848 | + offsetof(struct target_rt_sigframe, rs_uc); | |
2849 | env->active_tc.gpr[29] = frame_addr; | |
2850 | env->active_tc.gpr[31] = frame_addr | |
2851 | + offsetof(struct target_rt_sigframe, rs_code); | |
2852 | /* The original kernel code sets CP0_EPC to the handler | |
2853 | * since it returns to userland using eret | |
2854 | * we cannot do this here, and we must set PC directly */ | |
2855 | env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler; | |
2856 | unlock_user_struct(frame, frame_addr, 1); | |
2857 | return; | |
2858 | ||
2859 | give_sigsegv: | |
2860 | unlock_user_struct(frame, frame_addr, 1); | |
2861 | force_sig(TARGET_SIGSEGV/*, current*/); | |
2862 | return; | |
106ec879 FB |
2863 | } |
2864 | ||
2865 | long do_rt_sigreturn(CPUState *env) | |
2866 | { | |
0b1bcb00 PB |
2867 | struct target_rt_sigframe *frame; |
2868 | abi_ulong frame_addr; | |
2869 | sigset_t blocked; | |
2870 | ||
2871 | #if defined(DEBUG_SIGNAL) | |
2872 | fprintf(stderr, "do_rt_sigreturn\n"); | |
2873 | #endif | |
2874 | frame_addr = env->active_tc.gpr[29]; | |
2875 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
2876 | goto badframe; | |
2877 | ||
60e99246 | 2878 | target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask); |
0b1bcb00 PB |
2879 | sigprocmask(SIG_SETMASK, &blocked, NULL); |
2880 | ||
60e99246 | 2881 | if (restore_sigcontext(env, &frame->rs_uc.tuc_mcontext)) |
0b1bcb00 PB |
2882 | goto badframe; |
2883 | ||
2884 | if (do_sigaltstack(frame_addr + | |
60e99246 | 2885 | offsetof(struct target_rt_sigframe, rs_uc.tuc_stack), |
0b1bcb00 PB |
2886 | 0, get_sp_from_cpustate(env)) == -EFAULT) |
2887 | goto badframe; | |
2888 | ||
2889 | env->active_tc.PC = env->CP0_EPC; | |
2890 | /* I am not sure this is right, but it seems to work | |
2891 | * maybe a problem with nested signals ? */ | |
2892 | env->CP0_EPC = 0; | |
2893 | return -TARGET_QEMU_ESIGRETURN; | |
2894 | ||
2895 | badframe: | |
2896 | force_sig(TARGET_SIGSEGV/*, current*/); | |
2897 | return 0; | |
106ec879 | 2898 | } |
6d5e216d | 2899 | |
c3b5bc8a TS |
2900 | #elif defined(TARGET_SH4) |
2901 | ||
2902 | /* | |
2903 | * code and data structures from linux kernel: | |
2904 | * include/asm-sh/sigcontext.h | |
2905 | * arch/sh/kernel/signal.c | |
2906 | */ | |
2907 | ||
2908 | struct target_sigcontext { | |
2909 | target_ulong oldmask; | |
2910 | ||
2911 | /* CPU registers */ | |
2912 | target_ulong sc_gregs[16]; | |
2913 | target_ulong sc_pc; | |
2914 | target_ulong sc_pr; | |
2915 | target_ulong sc_sr; | |
2916 | target_ulong sc_gbr; | |
2917 | target_ulong sc_mach; | |
2918 | target_ulong sc_macl; | |
2919 | ||
2920 | /* FPU registers */ | |
2921 | target_ulong sc_fpregs[16]; | |
2922 | target_ulong sc_xfpregs[16]; | |
2923 | unsigned int sc_fpscr; | |
2924 | unsigned int sc_fpul; | |
2925 | unsigned int sc_ownedfp; | |
2926 | }; | |
2927 | ||
2928 | struct target_sigframe | |
2929 | { | |
2930 | struct target_sigcontext sc; | |
2931 | target_ulong extramask[TARGET_NSIG_WORDS-1]; | |
2932 | uint16_t retcode[3]; | |
2933 | }; | |
2934 | ||
2935 | ||
2936 | struct target_ucontext { | |
60e99246 AJ |
2937 | target_ulong tuc_flags; |
2938 | struct target_ucontext *tuc_link; | |
2939 | target_stack_t tuc_stack; | |
2940 | struct target_sigcontext tuc_mcontext; | |
2941 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
c3b5bc8a TS |
2942 | }; |
2943 | ||
2944 | struct target_rt_sigframe | |
2945 | { | |
2946 | struct target_siginfo info; | |
2947 | struct target_ucontext uc; | |
2948 | uint16_t retcode[3]; | |
2949 | }; | |
2950 | ||
2951 | ||
2952 | #define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */ | |
2953 | #define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */ | |
2954 | ||
624f7979 | 2955 | static abi_ulong get_sigframe(struct target_sigaction *ka, |
c3b5bc8a TS |
2956 | unsigned long sp, size_t frame_size) |
2957 | { | |
624f7979 | 2958 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) { |
c3b5bc8a TS |
2959 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2960 | } | |
2961 | ||
2962 | return (sp - frame_size) & -8ul; | |
2963 | } | |
2964 | ||
2965 | static int setup_sigcontext(struct target_sigcontext *sc, | |
2966 | CPUState *regs, unsigned long mask) | |
2967 | { | |
2968 | int err = 0; | |
d8714436 | 2969 | int i; |
c3b5bc8a TS |
2970 | |
2971 | #define COPY(x) err |= __put_user(regs->x, &sc->sc_##x) | |
2972 | COPY(gregs[0]); COPY(gregs[1]); | |
2973 | COPY(gregs[2]); COPY(gregs[3]); | |
2974 | COPY(gregs[4]); COPY(gregs[5]); | |
2975 | COPY(gregs[6]); COPY(gregs[7]); | |
2976 | COPY(gregs[8]); COPY(gregs[9]); | |
2977 | COPY(gregs[10]); COPY(gregs[11]); | |
2978 | COPY(gregs[12]); COPY(gregs[13]); | |
2979 | COPY(gregs[14]); COPY(gregs[15]); | |
2980 | COPY(gbr); COPY(mach); | |
2981 | COPY(macl); COPY(pr); | |
2982 | COPY(sr); COPY(pc); | |
2983 | #undef COPY | |
2984 | ||
d8714436 | 2985 | for (i=0; i<16; i++) { |
2986 | err |= __put_user(regs->fregs[i], &sc->sc_fpregs[i]); | |
2987 | } | |
2988 | err |= __put_user(regs->fpscr, &sc->sc_fpscr); | |
2989 | err |= __put_user(regs->fpul, &sc->sc_fpul); | |
c3b5bc8a TS |
2990 | |
2991 | /* non-iBCS2 extensions.. */ | |
2992 | err |= __put_user(mask, &sc->oldmask); | |
2993 | ||
2994 | return err; | |
2995 | } | |
2996 | ||
d8714436 | 2997 | static int restore_sigcontext(CPUState *regs, struct target_sigcontext *sc, |
2998 | target_ulong *r0_p) | |
c3b5bc8a TS |
2999 | { |
3000 | unsigned int err = 0; | |
d8714436 | 3001 | int i; |
c3b5bc8a TS |
3002 | |
3003 | #define COPY(x) err |= __get_user(regs->x, &sc->sc_##x) | |
3004 | COPY(gregs[1]); | |
3005 | COPY(gregs[2]); COPY(gregs[3]); | |
3006 | COPY(gregs[4]); COPY(gregs[5]); | |
3007 | COPY(gregs[6]); COPY(gregs[7]); | |
3008 | COPY(gregs[8]); COPY(gregs[9]); | |
3009 | COPY(gregs[10]); COPY(gregs[11]); | |
3010 | COPY(gregs[12]); COPY(gregs[13]); | |
3011 | COPY(gregs[14]); COPY(gregs[15]); | |
3012 | COPY(gbr); COPY(mach); | |
3013 | COPY(macl); COPY(pr); | |
3014 | COPY(sr); COPY(pc); | |
3015 | #undef COPY | |
3016 | ||
d8714436 | 3017 | for (i=0; i<16; i++) { |
3018 | err |= __get_user(regs->fregs[i], &sc->sc_fpregs[i]); | |
3019 | } | |
3020 | err |= __get_user(regs->fpscr, &sc->sc_fpscr); | |
3021 | err |= __get_user(regs->fpul, &sc->sc_fpul); | |
c3b5bc8a TS |
3022 | |
3023 | regs->tra = -1; /* disable syscall checks */ | |
d8714436 | 3024 | err |= __get_user(*r0_p, &sc->sc_gregs[0]); |
c3b5bc8a TS |
3025 | return err; |
3026 | } | |
3027 | ||
624f7979 | 3028 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3029 | target_sigset_t *set, CPUState *regs) |
c3b5bc8a TS |
3030 | { |
3031 | struct target_sigframe *frame; | |
3032 | abi_ulong frame_addr; | |
3033 | int i; | |
3034 | int err = 0; | |
3035 | int signal; | |
3036 | ||
3037 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
3038 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3039 | goto give_sigsegv; | |
3040 | ||
3041 | signal = current_exec_domain_sig(sig); | |
3042 | ||
3043 | err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); | |
3044 | ||
3045 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
3046 | err |= __put_user(set->sig[i + 1], &frame->extramask[i]); | |
3047 | } | |
3048 | ||
3049 | /* Set up to return from userspace. If provided, use a stub | |
3050 | already in userspace. */ | |
624f7979 PB |
3051 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
3052 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
3053 | } else { |
3054 | /* Generate return code (system call to sigreturn) */ | |
3055 | err |= __put_user(MOVW(2), &frame->retcode[0]); | |
3056 | err |= __put_user(TRAP_NOARG, &frame->retcode[1]); | |
3057 | err |= __put_user((TARGET_NR_sigreturn), &frame->retcode[2]); | |
3058 | regs->pr = (unsigned long) frame->retcode; | |
3059 | } | |
3060 | ||
3061 | if (err) | |
3062 | goto give_sigsegv; | |
3063 | ||
3064 | /* Set up registers for signal handler */ | |
3065 | regs->gregs[15] = (unsigned long) frame; | |
3066 | regs->gregs[4] = signal; /* Arg for signal handler */ | |
3067 | regs->gregs[5] = 0; | |
3068 | regs->gregs[6] = (unsigned long) &frame->sc; | |
624f7979 | 3069 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
3070 | |
3071 | unlock_user_struct(frame, frame_addr, 1); | |
3072 | return; | |
3073 | ||
3074 | give_sigsegv: | |
3075 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 3076 | force_sig(TARGET_SIGSEGV); |
c3b5bc8a TS |
3077 | } |
3078 | ||
624f7979 | 3079 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
3080 | target_siginfo_t *info, |
3081 | target_sigset_t *set, CPUState *regs) | |
c3b5bc8a TS |
3082 | { |
3083 | struct target_rt_sigframe *frame; | |
3084 | abi_ulong frame_addr; | |
3085 | int i; | |
3086 | int err = 0; | |
3087 | int signal; | |
3088 | ||
3089 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
3090 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3091 | goto give_sigsegv; | |
3092 | ||
3093 | signal = current_exec_domain_sig(sig); | |
3094 | ||
3095 | err |= copy_siginfo_to_user(&frame->info, info); | |
3096 | ||
3097 | /* Create the ucontext. */ | |
60e99246 AJ |
3098 | err |= __put_user(0, &frame->uc.tuc_flags); |
3099 | err |= __put_user(0, (unsigned long *)&frame->uc.tuc_link); | |
526ccb7a | 3100 | err |= __put_user((unsigned long)target_sigaltstack_used.ss_sp, |
60e99246 | 3101 | &frame->uc.tuc_stack.ss_sp); |
c3b5bc8a | 3102 | err |= __put_user(sas_ss_flags(regs->gregs[15]), |
60e99246 | 3103 | &frame->uc.tuc_stack.ss_flags); |
c3b5bc8a | 3104 | err |= __put_user(target_sigaltstack_used.ss_size, |
60e99246 AJ |
3105 | &frame->uc.tuc_stack.ss_size); |
3106 | err |= setup_sigcontext(&frame->uc.tuc_mcontext, | |
c3b5bc8a TS |
3107 | regs, set->sig[0]); |
3108 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
60e99246 | 3109 | err |= __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
c3b5bc8a TS |
3110 | } |
3111 | ||
3112 | /* Set up to return from userspace. If provided, use a stub | |
3113 | already in userspace. */ | |
624f7979 PB |
3114 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
3115 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
3116 | } else { |
3117 | /* Generate return code (system call to sigreturn) */ | |
3118 | err |= __put_user(MOVW(2), &frame->retcode[0]); | |
3119 | err |= __put_user(TRAP_NOARG, &frame->retcode[1]); | |
3120 | err |= __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]); | |
3121 | regs->pr = (unsigned long) frame->retcode; | |
3122 | } | |
3123 | ||
3124 | if (err) | |
3125 | goto give_sigsegv; | |
3126 | ||
3127 | /* Set up registers for signal handler */ | |
3128 | regs->gregs[15] = (unsigned long) frame; | |
3129 | regs->gregs[4] = signal; /* Arg for signal handler */ | |
3130 | regs->gregs[5] = (unsigned long) &frame->info; | |
3131 | regs->gregs[6] = (unsigned long) &frame->uc; | |
624f7979 | 3132 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
3133 | |
3134 | unlock_user_struct(frame, frame_addr, 1); | |
3135 | return; | |
3136 | ||
3137 | give_sigsegv: | |
3138 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 3139 | force_sig(TARGET_SIGSEGV); |
c3b5bc8a TS |
3140 | } |
3141 | ||
3142 | long do_sigreturn(CPUState *regs) | |
3143 | { | |
3144 | struct target_sigframe *frame; | |
3145 | abi_ulong frame_addr; | |
3146 | sigset_t blocked; | |
c227f099 | 3147 | target_sigset_t target_set; |
d8714436 | 3148 | target_ulong r0; |
c3b5bc8a TS |
3149 | int i; |
3150 | int err = 0; | |
3151 | ||
3152 | #if defined(DEBUG_SIGNAL) | |
3153 | fprintf(stderr, "do_sigreturn\n"); | |
3154 | #endif | |
3155 | frame_addr = regs->gregs[15]; | |
3156 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
3157 | goto badframe; | |
3158 | ||
3159 | err |= __get_user(target_set.sig[0], &frame->sc.oldmask); | |
3160 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3161 | err |= (__get_user(target_set.sig[i], &frame->extramask[i - 1])); | |
3162 | } | |
3163 | ||
3164 | if (err) | |
3165 | goto badframe; | |
3166 | ||
3167 | target_to_host_sigset_internal(&blocked, &target_set); | |
3168 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
3169 | ||
d8714436 | 3170 | if (restore_sigcontext(regs, &frame->sc, &r0)) |
c3b5bc8a TS |
3171 | goto badframe; |
3172 | ||
3173 | unlock_user_struct(frame, frame_addr, 0); | |
d8714436 | 3174 | return r0; |
c3b5bc8a TS |
3175 | |
3176 | badframe: | |
3177 | unlock_user_struct(frame, frame_addr, 0); | |
3178 | force_sig(TARGET_SIGSEGV); | |
3179 | return 0; | |
3180 | } | |
3181 | ||
3182 | long do_rt_sigreturn(CPUState *regs) | |
3183 | { | |
3184 | struct target_rt_sigframe *frame; | |
3185 | abi_ulong frame_addr; | |
3186 | sigset_t blocked; | |
d8714436 | 3187 | target_ulong r0; |
c3b5bc8a TS |
3188 | |
3189 | #if defined(DEBUG_SIGNAL) | |
3190 | fprintf(stderr, "do_rt_sigreturn\n"); | |
3191 | #endif | |
3192 | frame_addr = regs->gregs[15]; | |
3193 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
3194 | goto badframe; | |
3195 | ||
60e99246 | 3196 | target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask); |
c3b5bc8a TS |
3197 | sigprocmask(SIG_SETMASK, &blocked, NULL); |
3198 | ||
60e99246 | 3199 | if (restore_sigcontext(regs, &frame->uc.tuc_mcontext, &r0)) |
c3b5bc8a TS |
3200 | goto badframe; |
3201 | ||
3202 | if (do_sigaltstack(frame_addr + | |
60e99246 | 3203 | offsetof(struct target_rt_sigframe, uc.tuc_stack), |
c3b5bc8a TS |
3204 | 0, get_sp_from_cpustate(regs)) == -EFAULT) |
3205 | goto badframe; | |
3206 | ||
3207 | unlock_user_struct(frame, frame_addr, 0); | |
d8714436 | 3208 | return r0; |
c3b5bc8a TS |
3209 | |
3210 | badframe: | |
3211 | unlock_user_struct(frame, frame_addr, 0); | |
3212 | force_sig(TARGET_SIGSEGV); | |
3213 | return 0; | |
3214 | } | |
b779e29e EI |
3215 | #elif defined(TARGET_MICROBLAZE) |
3216 | ||
3217 | struct target_sigcontext { | |
3218 | struct target_pt_regs regs; /* needs to be first */ | |
3219 | uint32_t oldmask; | |
3220 | }; | |
3221 | ||
b2178704 EI |
3222 | struct target_stack_t { |
3223 | abi_ulong ss_sp; | |
3224 | int ss_flags; | |
3225 | unsigned int ss_size; | |
3226 | }; | |
3227 | ||
3228 | struct target_ucontext { | |
f711df67 RH |
3229 | abi_ulong tuc_flags; |
3230 | abi_ulong tuc_link; | |
3231 | struct target_stack_t tuc_stack; | |
3232 | struct target_sigcontext tuc_mcontext; | |
3233 | uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1]; | |
b2178704 EI |
3234 | }; |
3235 | ||
b779e29e EI |
3236 | /* Signal frames. */ |
3237 | struct target_signal_frame { | |
b2178704 | 3238 | struct target_ucontext uc; |
b779e29e EI |
3239 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; |
3240 | uint32_t tramp[2]; | |
3241 | }; | |
3242 | ||
3243 | struct rt_signal_frame { | |
3244 | struct siginfo info; | |
3245 | struct ucontext uc; | |
3246 | uint32_t tramp[2]; | |
3247 | }; | |
3248 | ||
3249 | static void setup_sigcontext(struct target_sigcontext *sc, CPUState *env) | |
3250 | { | |
3251 | __put_user(env->regs[0], &sc->regs.r0); | |
3252 | __put_user(env->regs[1], &sc->regs.r1); | |
3253 | __put_user(env->regs[2], &sc->regs.r2); | |
3254 | __put_user(env->regs[3], &sc->regs.r3); | |
3255 | __put_user(env->regs[4], &sc->regs.r4); | |
3256 | __put_user(env->regs[5], &sc->regs.r5); | |
3257 | __put_user(env->regs[6], &sc->regs.r6); | |
3258 | __put_user(env->regs[7], &sc->regs.r7); | |
3259 | __put_user(env->regs[8], &sc->regs.r8); | |
3260 | __put_user(env->regs[9], &sc->regs.r9); | |
3261 | __put_user(env->regs[10], &sc->regs.r10); | |
3262 | __put_user(env->regs[11], &sc->regs.r11); | |
3263 | __put_user(env->regs[12], &sc->regs.r12); | |
3264 | __put_user(env->regs[13], &sc->regs.r13); | |
3265 | __put_user(env->regs[14], &sc->regs.r14); | |
3266 | __put_user(env->regs[15], &sc->regs.r15); | |
3267 | __put_user(env->regs[16], &sc->regs.r16); | |
3268 | __put_user(env->regs[17], &sc->regs.r17); | |
3269 | __put_user(env->regs[18], &sc->regs.r18); | |
3270 | __put_user(env->regs[19], &sc->regs.r19); | |
3271 | __put_user(env->regs[20], &sc->regs.r20); | |
3272 | __put_user(env->regs[21], &sc->regs.r21); | |
3273 | __put_user(env->regs[22], &sc->regs.r22); | |
3274 | __put_user(env->regs[23], &sc->regs.r23); | |
3275 | __put_user(env->regs[24], &sc->regs.r24); | |
3276 | __put_user(env->regs[25], &sc->regs.r25); | |
3277 | __put_user(env->regs[26], &sc->regs.r26); | |
3278 | __put_user(env->regs[27], &sc->regs.r27); | |
3279 | __put_user(env->regs[28], &sc->regs.r28); | |
3280 | __put_user(env->regs[29], &sc->regs.r29); | |
3281 | __put_user(env->regs[30], &sc->regs.r30); | |
3282 | __put_user(env->regs[31], &sc->regs.r31); | |
3283 | __put_user(env->sregs[SR_PC], &sc->regs.pc); | |
3284 | } | |
3285 | ||
3286 | static void restore_sigcontext(struct target_sigcontext *sc, CPUState *env) | |
3287 | { | |
3288 | __get_user(env->regs[0], &sc->regs.r0); | |
3289 | __get_user(env->regs[1], &sc->regs.r1); | |
3290 | __get_user(env->regs[2], &sc->regs.r2); | |
3291 | __get_user(env->regs[3], &sc->regs.r3); | |
3292 | __get_user(env->regs[4], &sc->regs.r4); | |
3293 | __get_user(env->regs[5], &sc->regs.r5); | |
3294 | __get_user(env->regs[6], &sc->regs.r6); | |
3295 | __get_user(env->regs[7], &sc->regs.r7); | |
3296 | __get_user(env->regs[8], &sc->regs.r8); | |
3297 | __get_user(env->regs[9], &sc->regs.r9); | |
3298 | __get_user(env->regs[10], &sc->regs.r10); | |
3299 | __get_user(env->regs[11], &sc->regs.r11); | |
3300 | __get_user(env->regs[12], &sc->regs.r12); | |
3301 | __get_user(env->regs[13], &sc->regs.r13); | |
3302 | __get_user(env->regs[14], &sc->regs.r14); | |
3303 | __get_user(env->regs[15], &sc->regs.r15); | |
3304 | __get_user(env->regs[16], &sc->regs.r16); | |
3305 | __get_user(env->regs[17], &sc->regs.r17); | |
3306 | __get_user(env->regs[18], &sc->regs.r18); | |
3307 | __get_user(env->regs[19], &sc->regs.r19); | |
3308 | __get_user(env->regs[20], &sc->regs.r20); | |
3309 | __get_user(env->regs[21], &sc->regs.r21); | |
3310 | __get_user(env->regs[22], &sc->regs.r22); | |
3311 | __get_user(env->regs[23], &sc->regs.r23); | |
3312 | __get_user(env->regs[24], &sc->regs.r24); | |
3313 | __get_user(env->regs[25], &sc->regs.r25); | |
3314 | __get_user(env->regs[26], &sc->regs.r26); | |
3315 | __get_user(env->regs[27], &sc->regs.r27); | |
3316 | __get_user(env->regs[28], &sc->regs.r28); | |
3317 | __get_user(env->regs[29], &sc->regs.r29); | |
3318 | __get_user(env->regs[30], &sc->regs.r30); | |
3319 | __get_user(env->regs[31], &sc->regs.r31); | |
3320 | __get_user(env->sregs[SR_PC], &sc->regs.pc); | |
3321 | } | |
3322 | ||
3323 | static abi_ulong get_sigframe(struct target_sigaction *ka, | |
3324 | CPUState *env, int frame_size) | |
3325 | { | |
3326 | abi_ulong sp = env->regs[1]; | |
3327 | ||
3328 | if ((ka->sa_flags & SA_ONSTACK) != 0 && !on_sig_stack(sp)) | |
3329 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
3330 | ||
3331 | return ((sp - frame_size) & -8UL); | |
3332 | } | |
3333 | ||
3334 | static void setup_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 3335 | target_sigset_t *set, CPUState *env) |
b779e29e EI |
3336 | { |
3337 | struct target_signal_frame *frame; | |
3338 | abi_ulong frame_addr; | |
3339 | int err = 0; | |
3340 | int i; | |
3341 | ||
3342 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
3343 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
3344 | goto badframe; | |
3345 | ||
3346 | /* Save the mask. */ | |
f711df67 | 3347 | err |= __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask); |
b779e29e EI |
3348 | if (err) |
3349 | goto badframe; | |
3350 | ||
3351 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3352 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
3353 | goto badframe; | |
3354 | } | |
3355 | ||
f711df67 | 3356 | setup_sigcontext(&frame->uc.tuc_mcontext, env); |
b779e29e EI |
3357 | |
3358 | /* Set up to return from userspace. If provided, use a stub | |
3359 | already in userspace. */ | |
3360 | /* minus 8 is offset to cater for "rtsd r15,8" offset */ | |
3361 | if (ka->sa_flags & TARGET_SA_RESTORER) { | |
3362 | env->regs[15] = ((unsigned long)ka->sa_restorer)-8; | |
3363 | } else { | |
3364 | uint32_t t; | |
3365 | /* Note, these encodings are _big endian_! */ | |
3366 | /* addi r12, r0, __NR_sigreturn */ | |
3367 | t = 0x31800000UL | TARGET_NR_sigreturn; | |
3368 | err |= __put_user(t, frame->tramp + 0); | |
3369 | /* brki r14, 0x8 */ | |
3370 | t = 0xb9cc0008UL; | |
3371 | err |= __put_user(t, frame->tramp + 1); | |
3372 | ||
3373 | /* Return from sighandler will jump to the tramp. | |
3374 | Negative 8 offset because return is rtsd r15, 8 */ | |
3375 | env->regs[15] = ((unsigned long)frame->tramp) - 8; | |
3376 | } | |
3377 | ||
3378 | if (err) | |
3379 | goto badframe; | |
3380 | ||
3381 | /* Set up registers for signal handler */ | |
3382 | env->regs[1] = (unsigned long) frame; | |
3383 | /* Signal handler args: */ | |
3384 | env->regs[5] = sig; /* Arg 0: signum */ | |
187b4e08 | 3385 | env->regs[6] = 0; |
b2178704 | 3386 | env->regs[7] = (unsigned long) &frame->uc; /* arg 1: sigcontext */ |
b779e29e EI |
3387 | |
3388 | /* Offset of 4 to handle microblaze rtid r14, 0 */ | |
3389 | env->sregs[SR_PC] = (unsigned long)ka->_sa_handler; | |
3390 | ||
3391 | unlock_user_struct(frame, frame_addr, 1); | |
3392 | return; | |
3393 | badframe: | |
3394 | unlock_user_struct(frame, frame_addr, 1); | |
3395 | force_sig(TARGET_SIGSEGV); | |
3396 | } | |
3397 | ||
3398 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
c227f099 AL |
3399 | target_siginfo_t *info, |
3400 | target_sigset_t *set, CPUState *env) | |
b779e29e EI |
3401 | { |
3402 | fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n"); | |
3403 | } | |
3404 | ||
3405 | long do_sigreturn(CPUState *env) | |
3406 | { | |
3407 | struct target_signal_frame *frame; | |
3408 | abi_ulong frame_addr; | |
c227f099 | 3409 | target_sigset_t target_set; |
b779e29e EI |
3410 | sigset_t set; |
3411 | int i; | |
3412 | ||
3413 | frame_addr = env->regs[R_SP]; | |
3414 | /* Make sure the guest isn't playing games. */ | |
3415 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) | |
3416 | goto badframe; | |
3417 | ||
3418 | /* Restore blocked signals */ | |
f711df67 | 3419 | if (__get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask)) |
b779e29e EI |
3420 | goto badframe; |
3421 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3422 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
3423 | goto badframe; | |
3424 | } | |
3425 | target_to_host_sigset_internal(&set, &target_set); | |
3426 | sigprocmask(SIG_SETMASK, &set, NULL); | |
3427 | ||
f711df67 | 3428 | restore_sigcontext(&frame->uc.tuc_mcontext, env); |
b779e29e EI |
3429 | /* We got here through a sigreturn syscall, our path back is via an |
3430 | rtb insn so setup r14 for that. */ | |
3431 | env->regs[14] = env->sregs[SR_PC]; | |
3432 | ||
3433 | unlock_user_struct(frame, frame_addr, 0); | |
3434 | return env->regs[10]; | |
3435 | badframe: | |
3436 | unlock_user_struct(frame, frame_addr, 0); | |
3437 | force_sig(TARGET_SIGSEGV); | |
3438 | } | |
3439 | ||
3440 | long do_rt_sigreturn(CPUState *env) | |
3441 | { | |
3442 | fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n"); | |
3443 | return -TARGET_ENOSYS; | |
3444 | } | |
3445 | ||
b6d3abda EI |
3446 | #elif defined(TARGET_CRIS) |
3447 | ||
3448 | struct target_sigcontext { | |
3449 | struct target_pt_regs regs; /* needs to be first */ | |
3450 | uint32_t oldmask; | |
3451 | uint32_t usp; /* usp before stacking this gunk on it */ | |
3452 | }; | |
3453 | ||
3454 | /* Signal frames. */ | |
3455 | struct target_signal_frame { | |
3456 | struct target_sigcontext sc; | |
3457 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; | |
3458 | uint8_t retcode[8]; /* Trampoline code. */ | |
3459 | }; | |
3460 | ||
3461 | struct rt_signal_frame { | |
3462 | struct siginfo *pinfo; | |
3463 | void *puc; | |
3464 | struct siginfo info; | |
3465 | struct ucontext uc; | |
3466 | uint8_t retcode[8]; /* Trampoline code. */ | |
3467 | }; | |
3468 | ||
3469 | static void setup_sigcontext(struct target_sigcontext *sc, CPUState *env) | |
3470 | { | |
9664d928 EI |
3471 | __put_user(env->regs[0], &sc->regs.r0); |
3472 | __put_user(env->regs[1], &sc->regs.r1); | |
3473 | __put_user(env->regs[2], &sc->regs.r2); | |
3474 | __put_user(env->regs[3], &sc->regs.r3); | |
3475 | __put_user(env->regs[4], &sc->regs.r4); | |
3476 | __put_user(env->regs[5], &sc->regs.r5); | |
3477 | __put_user(env->regs[6], &sc->regs.r6); | |
3478 | __put_user(env->regs[7], &sc->regs.r7); | |
3479 | __put_user(env->regs[8], &sc->regs.r8); | |
3480 | __put_user(env->regs[9], &sc->regs.r9); | |
3481 | __put_user(env->regs[10], &sc->regs.r10); | |
3482 | __put_user(env->regs[11], &sc->regs.r11); | |
3483 | __put_user(env->regs[12], &sc->regs.r12); | |
3484 | __put_user(env->regs[13], &sc->regs.r13); | |
3485 | __put_user(env->regs[14], &sc->usp); | |
3486 | __put_user(env->regs[15], &sc->regs.acr); | |
3487 | __put_user(env->pregs[PR_MOF], &sc->regs.mof); | |
3488 | __put_user(env->pregs[PR_SRP], &sc->regs.srp); | |
3489 | __put_user(env->pc, &sc->regs.erp); | |
b6d3abda | 3490 | } |
9664d928 | 3491 | |
b6d3abda EI |
3492 | static void restore_sigcontext(struct target_sigcontext *sc, CPUState *env) |
3493 | { | |
9664d928 EI |
3494 | __get_user(env->regs[0], &sc->regs.r0); |
3495 | __get_user(env->regs[1], &sc->regs.r1); | |
3496 | __get_user(env->regs[2], &sc->regs.r2); | |
3497 | __get_user(env->regs[3], &sc->regs.r3); | |
3498 | __get_user(env->regs[4], &sc->regs.r4); | |
3499 | __get_user(env->regs[5], &sc->regs.r5); | |
3500 | __get_user(env->regs[6], &sc->regs.r6); | |
3501 | __get_user(env->regs[7], &sc->regs.r7); | |
3502 | __get_user(env->regs[8], &sc->regs.r8); | |
3503 | __get_user(env->regs[9], &sc->regs.r9); | |
3504 | __get_user(env->regs[10], &sc->regs.r10); | |
3505 | __get_user(env->regs[11], &sc->regs.r11); | |
3506 | __get_user(env->regs[12], &sc->regs.r12); | |
3507 | __get_user(env->regs[13], &sc->regs.r13); | |
3508 | __get_user(env->regs[14], &sc->usp); | |
3509 | __get_user(env->regs[15], &sc->regs.acr); | |
3510 | __get_user(env->pregs[PR_MOF], &sc->regs.mof); | |
3511 | __get_user(env->pregs[PR_SRP], &sc->regs.srp); | |
3512 | __get_user(env->pc, &sc->regs.erp); | |
3513 | } | |
3514 | ||
3515 | static abi_ulong get_sigframe(CPUState *env, int framesize) | |
3516 | { | |
3517 | abi_ulong sp; | |
b6d3abda | 3518 | /* Align the stack downwards to 4. */ |
9664d928 EI |
3519 | sp = (env->regs[R_SP] & ~3); |
3520 | return sp - framesize; | |
b6d3abda EI |
3521 | } |
3522 | ||
624f7979 | 3523 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 3524 | target_sigset_t *set, CPUState *env) |
b6d3abda EI |
3525 | { |
3526 | struct target_signal_frame *frame; | |
9664d928 | 3527 | abi_ulong frame_addr; |
b6d3abda EI |
3528 | int err = 0; |
3529 | int i; | |
b6d3abda | 3530 | |
9664d928 EI |
3531 | frame_addr = get_sigframe(env, sizeof *frame); |
3532 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
b6d3abda EI |
3533 | goto badframe; |
3534 | ||
3535 | /* | |
3536 | * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't | |
3537 | * use this trampoline anymore but it sets it up for GDB. | |
3538 | * In QEMU, using the trampoline simplifies things a bit so we use it. | |
3539 | * | |
3540 | * This is movu.w __NR_sigreturn, r9; break 13; | |
3541 | */ | |
3542 | err |= __put_user(0x9c5f, frame->retcode+0); | |
3543 | err |= __put_user(TARGET_NR_sigreturn, | |
3544 | frame->retcode+2); | |
3545 | err |= __put_user(0xe93d, frame->retcode+4); | |
3546 | ||
3547 | /* Save the mask. */ | |
3548 | err |= __put_user(set->sig[0], &frame->sc.oldmask); | |
3549 | if (err) | |
3550 | goto badframe; | |
3551 | ||
3552 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3553 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
3554 | goto badframe; | |
3555 | } | |
3556 | ||
3557 | setup_sigcontext(&frame->sc, env); | |
3558 | ||
3559 | /* Move the stack and setup the arguments for the handler. */ | |
526ccb7a | 3560 | env->regs[R_SP] = (uint32_t) (unsigned long) frame; |
b6d3abda | 3561 | env->regs[10] = sig; |
624f7979 | 3562 | env->pc = (unsigned long) ka->_sa_handler; |
b6d3abda | 3563 | /* Link SRP so the guest returns through the trampoline. */ |
526ccb7a | 3564 | env->pregs[PR_SRP] = (uint32_t) (unsigned long) &frame->retcode[0]; |
b6d3abda | 3565 | |
9664d928 | 3566 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
3567 | return; |
3568 | badframe: | |
9664d928 | 3569 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
3570 | force_sig(TARGET_SIGSEGV); |
3571 | } | |
3572 | ||
624f7979 | 3573 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
3574 | target_siginfo_t *info, |
3575 | target_sigset_t *set, CPUState *env) | |
b6d3abda EI |
3576 | { |
3577 | fprintf(stderr, "CRIS setup_rt_frame: not implemented\n"); | |
3578 | } | |
3579 | ||
3580 | long do_sigreturn(CPUState *env) | |
3581 | { | |
3582 | struct target_signal_frame *frame; | |
9664d928 | 3583 | abi_ulong frame_addr; |
c227f099 | 3584 | target_sigset_t target_set; |
b6d3abda EI |
3585 | sigset_t set; |
3586 | int i; | |
3587 | ||
9664d928 | 3588 | frame_addr = env->regs[R_SP]; |
b6d3abda | 3589 | /* Make sure the guest isn't playing games. */ |
9664d928 | 3590 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
b6d3abda EI |
3591 | goto badframe; |
3592 | ||
3593 | /* Restore blocked signals */ | |
3594 | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) | |
3595 | goto badframe; | |
3596 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3597 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
3598 | goto badframe; | |
3599 | } | |
3600 | target_to_host_sigset_internal(&set, &target_set); | |
3601 | sigprocmask(SIG_SETMASK, &set, NULL); | |
3602 | ||
3603 | restore_sigcontext(&frame->sc, env); | |
9664d928 | 3604 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3605 | return env->regs[10]; |
3606 | badframe: | |
9664d928 | 3607 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3608 | force_sig(TARGET_SIGSEGV); |
3609 | } | |
3610 | ||
3611 | long do_rt_sigreturn(CPUState *env) | |
3612 | { | |
3613 | fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n"); | |
3614 | return -TARGET_ENOSYS; | |
3615 | } | |
c3b5bc8a | 3616 | |
bcd4933a NF |
3617 | #elif defined(TARGET_PPC) && !defined(TARGET_PPC64) |
3618 | ||
3619 | /* FIXME: Many of the structures are defined for both PPC and PPC64, but | |
3620 | the signal handling is different enough that we haven't implemented | |
3621 | support for PPC64 yet. Hence the restriction above. | |
3622 | ||
3623 | There are various #if'd blocks for code for TARGET_PPC64. These | |
3624 | blocks should go away so that we can successfully run 32-bit and | |
3625 | 64-bit binaries on a QEMU configured for PPC64. */ | |
3626 | ||
3627 | /* Size of dummy stack frame allocated when calling signal handler. | |
3628 | See arch/powerpc/include/asm/ptrace.h. */ | |
3629 | #if defined(TARGET_PPC64) | |
3630 | #define SIGNAL_FRAMESIZE 128 | |
3631 | #else | |
3632 | #define SIGNAL_FRAMESIZE 64 | |
3633 | #endif | |
3634 | ||
3635 | /* See arch/powerpc/include/asm/sigcontext.h. */ | |
3636 | struct target_sigcontext { | |
3637 | target_ulong _unused[4]; | |
3638 | int32_t signal; | |
3639 | #if defined(TARGET_PPC64) | |
3640 | int32_t pad0; | |
3641 | #endif | |
3642 | target_ulong handler; | |
3643 | target_ulong oldmask; | |
3644 | target_ulong regs; /* struct pt_regs __user * */ | |
3645 | /* TODO: PPC64 includes extra bits here. */ | |
3646 | }; | |
3647 | ||
3648 | /* Indices for target_mcontext.mc_gregs, below. | |
3649 | See arch/powerpc/include/asm/ptrace.h for details. */ | |
3650 | enum { | |
3651 | TARGET_PT_R0 = 0, | |
3652 | TARGET_PT_R1 = 1, | |
3653 | TARGET_PT_R2 = 2, | |
3654 | TARGET_PT_R3 = 3, | |
3655 | TARGET_PT_R4 = 4, | |
3656 | TARGET_PT_R5 = 5, | |
3657 | TARGET_PT_R6 = 6, | |
3658 | TARGET_PT_R7 = 7, | |
3659 | TARGET_PT_R8 = 8, | |
3660 | TARGET_PT_R9 = 9, | |
3661 | TARGET_PT_R10 = 10, | |
3662 | TARGET_PT_R11 = 11, | |
3663 | TARGET_PT_R12 = 12, | |
3664 | TARGET_PT_R13 = 13, | |
3665 | TARGET_PT_R14 = 14, | |
3666 | TARGET_PT_R15 = 15, | |
3667 | TARGET_PT_R16 = 16, | |
3668 | TARGET_PT_R17 = 17, | |
3669 | TARGET_PT_R18 = 18, | |
3670 | TARGET_PT_R19 = 19, | |
3671 | TARGET_PT_R20 = 20, | |
3672 | TARGET_PT_R21 = 21, | |
3673 | TARGET_PT_R22 = 22, | |
3674 | TARGET_PT_R23 = 23, | |
3675 | TARGET_PT_R24 = 24, | |
3676 | TARGET_PT_R25 = 25, | |
3677 | TARGET_PT_R26 = 26, | |
3678 | TARGET_PT_R27 = 27, | |
3679 | TARGET_PT_R28 = 28, | |
3680 | TARGET_PT_R29 = 29, | |
3681 | TARGET_PT_R30 = 30, | |
3682 | TARGET_PT_R31 = 31, | |
3683 | TARGET_PT_NIP = 32, | |
3684 | TARGET_PT_MSR = 33, | |
3685 | TARGET_PT_ORIG_R3 = 34, | |
3686 | TARGET_PT_CTR = 35, | |
3687 | TARGET_PT_LNK = 36, | |
3688 | TARGET_PT_XER = 37, | |
3689 | TARGET_PT_CCR = 38, | |
3690 | /* Yes, there are two registers with #39. One is 64-bit only. */ | |
3691 | TARGET_PT_MQ = 39, | |
3692 | TARGET_PT_SOFTE = 39, | |
3693 | TARGET_PT_TRAP = 40, | |
3694 | TARGET_PT_DAR = 41, | |
3695 | TARGET_PT_DSISR = 42, | |
3696 | TARGET_PT_RESULT = 43, | |
3697 | TARGET_PT_REGS_COUNT = 44 | |
3698 | }; | |
3699 | ||
3700 | /* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC; | |
3701 | on 64-bit PPC, sigcontext and mcontext are one and the same. */ | |
3702 | struct target_mcontext { | |
3703 | target_ulong mc_gregs[48]; | |
3704 | /* Includes fpscr. */ | |
3705 | uint64_t mc_fregs[33]; | |
3706 | target_ulong mc_pad[2]; | |
3707 | /* We need to handle Altivec and SPE at the same time, which no | |
3708 | kernel needs to do. Fortunately, the kernel defines this bit to | |
3709 | be Altivec-register-large all the time, rather than trying to | |
3710 | twiddle it based on the specific platform. */ | |
3711 | union { | |
3712 | /* SPE vector registers. One extra for SPEFSCR. */ | |
3713 | uint32_t spe[33]; | |
3714 | /* Altivec vector registers. The packing of VSCR and VRSAVE | |
3715 | varies depending on whether we're PPC64 or not: PPC64 splits | |
3716 | them apart; PPC32 stuffs them together. */ | |
3717 | #if defined(TARGET_PPC64) | |
3efa9a67 | 3718 | #define QEMU_NVRREG 34 |
bcd4933a | 3719 | #else |
3efa9a67 | 3720 | #define QEMU_NVRREG 33 |
bcd4933a | 3721 | #endif |
c227f099 | 3722 | ppc_avr_t altivec[QEMU_NVRREG]; |
3efa9a67 | 3723 | #undef QEMU_NVRREG |
bcd4933a NF |
3724 | } mc_vregs __attribute__((__aligned__(16))); |
3725 | }; | |
3726 | ||
3727 | struct target_ucontext { | |
60e99246 AJ |
3728 | target_ulong tuc_flags; |
3729 | target_ulong tuc_link; /* struct ucontext __user * */ | |
3730 | struct target_sigaltstack tuc_stack; | |
bcd4933a | 3731 | #if !defined(TARGET_PPC64) |
60e99246 AJ |
3732 | int32_t tuc_pad[7]; |
3733 | target_ulong tuc_regs; /* struct mcontext __user * | |
bcd4933a NF |
3734 | points to uc_mcontext field */ |
3735 | #endif | |
60e99246 | 3736 | target_sigset_t tuc_sigmask; |
bcd4933a | 3737 | #if defined(TARGET_PPC64) |
c227f099 | 3738 | target_sigset_t unused[15]; /* Allow for uc_sigmask growth */ |
60e99246 | 3739 | struct target_sigcontext tuc_mcontext; |
bcd4933a | 3740 | #else |
60e99246 AJ |
3741 | int32_t tuc_maskext[30]; |
3742 | int32_t tuc_pad2[3]; | |
3743 | struct target_mcontext tuc_mcontext; | |
bcd4933a NF |
3744 | #endif |
3745 | }; | |
3746 | ||
3747 | /* See arch/powerpc/kernel/signal_32.c. */ | |
3748 | struct target_sigframe { | |
3749 | struct target_sigcontext sctx; | |
3750 | struct target_mcontext mctx; | |
3751 | int32_t abigap[56]; | |
3752 | }; | |
3753 | ||
3754 | struct target_rt_sigframe { | |
3755 | struct target_siginfo info; | |
3756 | struct target_ucontext uc; | |
3757 | int32_t abigap[56]; | |
3758 | }; | |
3759 | ||
3760 | /* We use the mc_pad field for the signal return trampoline. */ | |
3761 | #define tramp mc_pad | |
3762 | ||
3763 | /* See arch/powerpc/kernel/signal.c. */ | |
3764 | static target_ulong get_sigframe(struct target_sigaction *ka, | |
3765 | CPUState *env, | |
3766 | int frame_size) | |
3767 | { | |
3768 | target_ulong oldsp, newsp; | |
3769 | ||
3770 | oldsp = env->gpr[1]; | |
3771 | ||
3772 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && | |
3773 | (sas_ss_flags(oldsp))) { | |
3774 | oldsp = (target_sigaltstack_used.ss_sp | |
3775 | + target_sigaltstack_used.ss_size); | |
3776 | } | |
3777 | ||
3778 | newsp = (oldsp - frame_size) & ~0xFUL; | |
3779 | ||
3780 | return newsp; | |
3781 | } | |
3782 | ||
3783 | static int save_user_regs(CPUState *env, struct target_mcontext *frame, | |
3784 | int sigret) | |
3785 | { | |
3786 | target_ulong msr = env->msr; | |
3787 | int i; | |
3788 | target_ulong ccr = 0; | |
3789 | ||
3790 | /* In general, the kernel attempts to be intelligent about what it | |
3791 | needs to save for Altivec/FP/SPE registers. We don't care that | |
3792 | much, so we just go ahead and save everything. */ | |
3793 | ||
3794 | /* Save general registers. */ | |
3795 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
3796 | if (__put_user(env->gpr[i], &frame->mc_gregs[i])) { | |
3797 | return 1; | |
3798 | } | |
3799 | } | |
3800 | if (__put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]) | |
3801 | || __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]) | |
3802 | || __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]) | |
3803 | || __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER])) | |
3804 | return 1; | |
3805 | ||
3806 | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { | |
3807 | ccr |= env->crf[i] << (32 - ((i + 1) * 4)); | |
3808 | } | |
3809 | if (__put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR])) | |
3810 | return 1; | |
3811 | ||
3812 | /* Save Altivec registers if necessary. */ | |
3813 | if (env->insns_flags & PPC_ALTIVEC) { | |
3814 | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { | |
c227f099 AL |
3815 | ppc_avr_t *avr = &env->avr[i]; |
3816 | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; | |
bcd4933a NF |
3817 | |
3818 | if (__put_user(avr->u64[0], &vreg->u64[0]) || | |
3819 | __put_user(avr->u64[1], &vreg->u64[1])) { | |
3820 | return 1; | |
3821 | } | |
3822 | } | |
3823 | /* Set MSR_VR in the saved MSR value to indicate that | |
3824 | frame->mc_vregs contains valid data. */ | |
3825 | msr |= MSR_VR; | |
3826 | if (__put_user((uint32_t)env->spr[SPR_VRSAVE], | |
3827 | &frame->mc_vregs.altivec[32].u32[3])) | |
3828 | return 1; | |
3829 | } | |
3830 | ||
3831 | /* Save floating point registers. */ | |
3832 | if (env->insns_flags & PPC_FLOAT) { | |
3833 | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { | |
3834 | if (__put_user(env->fpr[i], &frame->mc_fregs[i])) { | |
3835 | return 1; | |
3836 | } | |
3837 | } | |
3838 | if (__put_user((uint64_t) env->fpscr, &frame->mc_fregs[32])) | |
3839 | return 1; | |
3840 | } | |
3841 | ||
3842 | /* Save SPE registers. The kernel only saves the high half. */ | |
3843 | if (env->insns_flags & PPC_SPE) { | |
3844 | #if defined(TARGET_PPC64) | |
3845 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
3846 | if (__put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i])) { | |
3847 | return 1; | |
3848 | } | |
3849 | } | |
3850 | #else | |
3851 | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { | |
3852 | if (__put_user(env->gprh[i], &frame->mc_vregs.spe[i])) { | |
3853 | return 1; | |
3854 | } | |
3855 | } | |
3856 | #endif | |
3857 | /* Set MSR_SPE in the saved MSR value to indicate that | |
3858 | frame->mc_vregs contains valid data. */ | |
3859 | msr |= MSR_SPE; | |
3860 | if (__put_user(env->spe_fscr, &frame->mc_vregs.spe[32])) | |
3861 | return 1; | |
3862 | } | |
3863 | ||
3864 | /* Store MSR. */ | |
3865 | if (__put_user(msr, &frame->mc_gregs[TARGET_PT_MSR])) | |
3866 | return 1; | |
3867 | ||
3868 | /* Set up the sigreturn trampoline: li r0,sigret; sc. */ | |
3869 | if (sigret) { | |
3870 | if (__put_user(0x38000000UL | sigret, &frame->tramp[0]) || | |
3871 | __put_user(0x44000002UL, &frame->tramp[1])) { | |
3872 | return 1; | |
3873 | } | |
3874 | } | |
3875 | ||
3876 | return 0; | |
3877 | } | |
3878 | ||
3879 | static int restore_user_regs(CPUState *env, | |
3880 | struct target_mcontext *frame, int sig) | |
3881 | { | |
3882 | target_ulong save_r2 = 0; | |
3883 | target_ulong msr; | |
3884 | target_ulong ccr; | |
3885 | ||
3886 | int i; | |
3887 | ||
3888 | if (!sig) { | |
3889 | save_r2 = env->gpr[2]; | |
3890 | } | |
3891 | ||
3892 | /* Restore general registers. */ | |
3893 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
3894 | if (__get_user(env->gpr[i], &frame->mc_gregs[i])) { | |
3895 | return 1; | |
3896 | } | |
3897 | } | |
3898 | if (__get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]) | |
3899 | || __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]) | |
3900 | || __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]) | |
3901 | || __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER])) | |
3902 | return 1; | |
3903 | if (__get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR])) | |
3904 | return 1; | |
3905 | ||
3906 | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { | |
3907 | env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf; | |
3908 | } | |
3909 | ||
3910 | if (!sig) { | |
3911 | env->gpr[2] = save_r2; | |
3912 | } | |
3913 | /* Restore MSR. */ | |
3914 | if (__get_user(msr, &frame->mc_gregs[TARGET_PT_MSR])) | |
3915 | return 1; | |
3916 | ||
3917 | /* If doing signal return, restore the previous little-endian mode. */ | |
3918 | if (sig) | |
3919 | env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE); | |
3920 | ||
3921 | /* Restore Altivec registers if necessary. */ | |
3922 | if (env->insns_flags & PPC_ALTIVEC) { | |
3923 | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { | |
c227f099 AL |
3924 | ppc_avr_t *avr = &env->avr[i]; |
3925 | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; | |
bcd4933a NF |
3926 | |
3927 | if (__get_user(avr->u64[0], &vreg->u64[0]) || | |
3928 | __get_user(avr->u64[1], &vreg->u64[1])) { | |
3929 | return 1; | |
3930 | } | |
3931 | } | |
3932 | /* Set MSR_VEC in the saved MSR value to indicate that | |
3933 | frame->mc_vregs contains valid data. */ | |
3934 | if (__get_user(env->spr[SPR_VRSAVE], | |
3935 | (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3]))) | |
3936 | return 1; | |
3937 | } | |
3938 | ||
3939 | /* Restore floating point registers. */ | |
3940 | if (env->insns_flags & PPC_FLOAT) { | |
3941 | uint64_t fpscr; | |
3942 | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { | |
3943 | if (__get_user(env->fpr[i], &frame->mc_fregs[i])) { | |
3944 | return 1; | |
3945 | } | |
3946 | } | |
3947 | if (__get_user(fpscr, &frame->mc_fregs[32])) | |
3948 | return 1; | |
3949 | env->fpscr = (uint32_t) fpscr; | |
3950 | } | |
3951 | ||
3952 | /* Save SPE registers. The kernel only saves the high half. */ | |
3953 | if (env->insns_flags & PPC_SPE) { | |
3954 | #if defined(TARGET_PPC64) | |
3955 | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { | |
3956 | uint32_t hi; | |
3957 | ||
3958 | if (__get_user(hi, &frame->mc_vregs.spe[i])) { | |
3959 | return 1; | |
3960 | } | |
3961 | env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]); | |
3962 | } | |
3963 | #else | |
3964 | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { | |
3965 | if (__get_user(env->gprh[i], &frame->mc_vregs.spe[i])) { | |
3966 | return 1; | |
3967 | } | |
3968 | } | |
3969 | #endif | |
3970 | if (__get_user(env->spe_fscr, &frame->mc_vregs.spe[32])) | |
3971 | return 1; | |
3972 | } | |
3973 | ||
3974 | return 0; | |
3975 | } | |
3976 | ||
3977 | static void setup_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 3978 | target_sigset_t *set, CPUState *env) |
bcd4933a NF |
3979 | { |
3980 | struct target_sigframe *frame; | |
3981 | struct target_sigcontext *sc; | |
3982 | target_ulong frame_addr, newsp; | |
3983 | int err = 0; | |
3984 | int signal; | |
3985 | ||
3986 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
3987 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) | |
3988 | goto sigsegv; | |
3989 | sc = &frame->sctx; | |
3990 | ||
3991 | signal = current_exec_domain_sig(sig); | |
3992 | ||
3993 | err |= __put_user(h2g(ka->_sa_handler), &sc->handler); | |
3994 | err |= __put_user(set->sig[0], &sc->oldmask); | |
3995 | #if defined(TARGET_PPC64) | |
3996 | err |= __put_user(set->sig[0] >> 32, &sc->_unused[3]); | |
3997 | #else | |
3998 | err |= __put_user(set->sig[1], &sc->_unused[3]); | |
3999 | #endif | |
4000 | err |= __put_user(h2g(&frame->mctx), &sc->regs); | |
4001 | err |= __put_user(sig, &sc->signal); | |
4002 | ||
4003 | /* Save user regs. */ | |
4004 | err |= save_user_regs(env, &frame->mctx, TARGET_NR_sigreturn); | |
4005 | ||
4006 | /* The kernel checks for the presence of a VDSO here. We don't | |
4007 | emulate a vdso, so use a sigreturn system call. */ | |
4008 | env->lr = (target_ulong) h2g(frame->mctx.tramp); | |
4009 | ||
4010 | /* Turn off all fp exceptions. */ | |
4011 | env->fpscr = 0; | |
4012 | ||
4013 | /* Create a stack frame for the caller of the handler. */ | |
4014 | newsp = frame_addr - SIGNAL_FRAMESIZE; | |
4015 | err |= __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp); | |
4016 | ||
4017 | if (err) | |
4018 | goto sigsegv; | |
4019 | ||
4020 | /* Set up registers for signal handler. */ | |
4021 | env->gpr[1] = newsp; | |
4022 | env->gpr[3] = signal; | |
4023 | env->gpr[4] = (target_ulong) h2g(sc); | |
4024 | env->nip = (target_ulong) ka->_sa_handler; | |
4025 | /* Signal handlers are entered in big-endian mode. */ | |
4026 | env->msr &= ~MSR_LE; | |
4027 | ||
4028 | unlock_user_struct(frame, frame_addr, 1); | |
4029 | return; | |
4030 | ||
4031 | sigsegv: | |
4032 | unlock_user_struct(frame, frame_addr, 1); | |
4033 | if (logfile) | |
4034 | fprintf (logfile, "segfaulting from setup_frame\n"); | |
66393fb9 | 4035 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4036 | } |
4037 | ||
4038 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
c227f099 AL |
4039 | target_siginfo_t *info, |
4040 | target_sigset_t *set, CPUState *env) | |
bcd4933a NF |
4041 | { |
4042 | struct target_rt_sigframe *rt_sf; | |
4043 | struct target_mcontext *frame; | |
4044 | target_ulong rt_sf_addr, newsp = 0; | |
4045 | int i, err = 0; | |
4046 | int signal; | |
4047 | ||
4048 | rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf)); | |
4049 | if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1)) | |
4050 | goto sigsegv; | |
4051 | ||
4052 | signal = current_exec_domain_sig(sig); | |
4053 | ||
4054 | err |= copy_siginfo_to_user(&rt_sf->info, info); | |
4055 | ||
60e99246 AJ |
4056 | err |= __put_user(0, &rt_sf->uc.tuc_flags); |
4057 | err |= __put_user(0, &rt_sf->uc.tuc_link); | |
bcd4933a | 4058 | err |= __put_user((target_ulong)target_sigaltstack_used.ss_sp, |
60e99246 | 4059 | &rt_sf->uc.tuc_stack.ss_sp); |
bcd4933a | 4060 | err |= __put_user(sas_ss_flags(env->gpr[1]), |
60e99246 | 4061 | &rt_sf->uc.tuc_stack.ss_flags); |
bcd4933a | 4062 | err |= __put_user(target_sigaltstack_used.ss_size, |
60e99246 AJ |
4063 | &rt_sf->uc.tuc_stack.ss_size); |
4064 | err |= __put_user(h2g (&rt_sf->uc.tuc_mcontext), | |
4065 | &rt_sf->uc.tuc_regs); | |
bcd4933a | 4066 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
60e99246 | 4067 | err |= __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]); |
bcd4933a NF |
4068 | } |
4069 | ||
60e99246 | 4070 | frame = &rt_sf->uc.tuc_mcontext; |
bcd4933a NF |
4071 | err |= save_user_regs(env, frame, TARGET_NR_rt_sigreturn); |
4072 | ||
4073 | /* The kernel checks for the presence of a VDSO here. We don't | |
4074 | emulate a vdso, so use a sigreturn system call. */ | |
4075 | env->lr = (target_ulong) h2g(frame->tramp); | |
4076 | ||
4077 | /* Turn off all fp exceptions. */ | |
4078 | env->fpscr = 0; | |
4079 | ||
4080 | /* Create a stack frame for the caller of the handler. */ | |
4081 | newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16); | |
4082 | err |= __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp); | |
4083 | ||
4084 | if (err) | |
4085 | goto sigsegv; | |
4086 | ||
4087 | /* Set up registers for signal handler. */ | |
4088 | env->gpr[1] = newsp; | |
4089 | env->gpr[3] = (target_ulong) signal; | |
4090 | env->gpr[4] = (target_ulong) h2g(&rt_sf->info); | |
4091 | env->gpr[5] = (target_ulong) h2g(&rt_sf->uc); | |
4092 | env->gpr[6] = (target_ulong) h2g(rt_sf); | |
4093 | env->nip = (target_ulong) ka->_sa_handler; | |
4094 | /* Signal handlers are entered in big-endian mode. */ | |
4095 | env->msr &= ~MSR_LE; | |
4096 | ||
4097 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4098 | return; | |
4099 | ||
4100 | sigsegv: | |
4101 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4102 | if (logfile) | |
4103 | fprintf (logfile, "segfaulting from setup_rt_frame\n"); | |
66393fb9 | 4104 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4105 | |
4106 | } | |
4107 | ||
4108 | long do_sigreturn(CPUState *env) | |
4109 | { | |
4110 | struct target_sigcontext *sc = NULL; | |
4111 | struct target_mcontext *sr = NULL; | |
4112 | target_ulong sr_addr, sc_addr; | |
4113 | sigset_t blocked; | |
c227f099 | 4114 | target_sigset_t set; |
bcd4933a NF |
4115 | |
4116 | sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE; | |
4117 | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) | |
4118 | goto sigsegv; | |
4119 | ||
4120 | #if defined(TARGET_PPC64) | |
4121 | set.sig[0] = sc->oldmask + ((long)(sc->_unused[3]) << 32); | |
4122 | #else | |
4123 | if(__get_user(set.sig[0], &sc->oldmask) || | |
4124 | __get_user(set.sig[1], &sc->_unused[3])) | |
4125 | goto sigsegv; | |
4126 | #endif | |
4127 | target_to_host_sigset_internal(&blocked, &set); | |
4128 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
4129 | ||
4130 | if (__get_user(sr_addr, &sc->regs)) | |
4131 | goto sigsegv; | |
4132 | if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1)) | |
4133 | goto sigsegv; | |
4134 | if (restore_user_regs(env, sr, 1)) | |
4135 | goto sigsegv; | |
4136 | ||
4137 | unlock_user_struct(sr, sr_addr, 1); | |
4138 | unlock_user_struct(sc, sc_addr, 1); | |
4139 | return -TARGET_QEMU_ESIGRETURN; | |
4140 | ||
4141 | sigsegv: | |
4142 | unlock_user_struct(sr, sr_addr, 1); | |
4143 | unlock_user_struct(sc, sc_addr, 1); | |
4144 | if (logfile) | |
4145 | fprintf (logfile, "segfaulting from do_sigreturn\n"); | |
66393fb9 | 4146 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4147 | return 0; |
4148 | } | |
4149 | ||
4150 | /* See arch/powerpc/kernel/signal_32.c. */ | |
4151 | static int do_setcontext(struct target_ucontext *ucp, CPUState *env, int sig) | |
4152 | { | |
4153 | struct target_mcontext *mcp; | |
4154 | target_ulong mcp_addr; | |
4155 | sigset_t blocked; | |
c227f099 | 4156 | target_sigset_t set; |
bcd4933a | 4157 | |
60e99246 | 4158 | if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext, tuc_sigmask), |
bcd4933a NF |
4159 | sizeof (set))) |
4160 | return 1; | |
4161 | ||
4162 | #if defined(TARGET_PPC64) | |
4163 | fprintf (stderr, "do_setcontext: not implemented\n"); | |
4164 | return 0; | |
4165 | #else | |
60e99246 | 4166 | if (__get_user(mcp_addr, &ucp->tuc_regs)) |
bcd4933a NF |
4167 | return 1; |
4168 | ||
4169 | if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1)) | |
4170 | return 1; | |
4171 | ||
4172 | target_to_host_sigset_internal(&blocked, &set); | |
4173 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
4174 | if (restore_user_regs(env, mcp, sig)) | |
4175 | goto sigsegv; | |
4176 | ||
4177 | unlock_user_struct(mcp, mcp_addr, 1); | |
4178 | return 0; | |
4179 | ||
4180 | sigsegv: | |
4181 | unlock_user_struct(mcp, mcp_addr, 1); | |
4182 | return 1; | |
4183 | #endif | |
4184 | } | |
4185 | ||
4186 | long do_rt_sigreturn(CPUState *env) | |
4187 | { | |
4188 | struct target_rt_sigframe *rt_sf = NULL; | |
4189 | target_ulong rt_sf_addr; | |
4190 | ||
4191 | rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16; | |
4192 | if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1)) | |
4193 | goto sigsegv; | |
4194 | ||
4195 | if (do_setcontext(&rt_sf->uc, env, 1)) | |
4196 | goto sigsegv; | |
4197 | ||
4198 | do_sigaltstack(rt_sf_addr | |
60e99246 | 4199 | + offsetof(struct target_rt_sigframe, uc.tuc_stack), |
bcd4933a NF |
4200 | 0, env->gpr[1]); |
4201 | ||
4202 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4203 | return -TARGET_QEMU_ESIGRETURN; | |
4204 | ||
4205 | sigsegv: | |
4206 | unlock_user_struct(rt_sf, rt_sf_addr, 1); | |
4207 | if (logfile) | |
4208 | fprintf (logfile, "segfaulting from do_rt_sigreturn\n"); | |
66393fb9 | 4209 | force_sig(TARGET_SIGSEGV); |
bcd4933a NF |
4210 | return 0; |
4211 | } | |
4212 | ||
492a8744 LV |
4213 | #elif defined(TARGET_M68K) |
4214 | ||
4215 | struct target_sigcontext { | |
4216 | abi_ulong sc_mask; | |
4217 | abi_ulong sc_usp; | |
4218 | abi_ulong sc_d0; | |
4219 | abi_ulong sc_d1; | |
4220 | abi_ulong sc_a0; | |
4221 | abi_ulong sc_a1; | |
4222 | unsigned short sc_sr; | |
4223 | abi_ulong sc_pc; | |
4224 | }; | |
4225 | ||
4226 | struct target_sigframe | |
4227 | { | |
4228 | abi_ulong pretcode; | |
4229 | int sig; | |
4230 | int code; | |
4231 | abi_ulong psc; | |
4232 | char retcode[8]; | |
4233 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; | |
4234 | struct target_sigcontext sc; | |
4235 | }; | |
7181155d | 4236 | |
c227f099 | 4237 | typedef int target_greg_t; |
7181155d | 4238 | #define TARGET_NGREG 18 |
c227f099 | 4239 | typedef target_greg_t target_gregset_t[TARGET_NGREG]; |
7181155d LV |
4240 | |
4241 | typedef struct target_fpregset { | |
4242 | int f_fpcntl[3]; | |
4243 | int f_fpregs[8*3]; | |
c227f099 | 4244 | } target_fpregset_t; |
7181155d LV |
4245 | |
4246 | struct target_mcontext { | |
4247 | int version; | |
c227f099 AL |
4248 | target_gregset_t gregs; |
4249 | target_fpregset_t fpregs; | |
7181155d LV |
4250 | }; |
4251 | ||
4252 | #define TARGET_MCONTEXT_VERSION 2 | |
4253 | ||
4254 | struct target_ucontext { | |
60e99246 AJ |
4255 | abi_ulong tuc_flags; |
4256 | abi_ulong tuc_link; | |
4257 | target_stack_t tuc_stack; | |
4258 | struct target_mcontext tuc_mcontext; | |
4259 | abi_long tuc_filler[80]; | |
4260 | target_sigset_t tuc_sigmask; | |
7181155d LV |
4261 | }; |
4262 | ||
4263 | struct target_rt_sigframe | |
4264 | { | |
4265 | abi_ulong pretcode; | |
4266 | int sig; | |
4267 | abi_ulong pinfo; | |
4268 | abi_ulong puc; | |
4269 | char retcode[8]; | |
4270 | struct target_siginfo info; | |
4271 | struct target_ucontext uc; | |
4272 | }; | |
492a8744 LV |
4273 | |
4274 | static int | |
4275 | setup_sigcontext(struct target_sigcontext *sc, CPUState *env, abi_ulong mask) | |
4276 | { | |
4277 | int err = 0; | |
4278 | ||
4279 | err |= __put_user(mask, &sc->sc_mask); | |
4280 | err |= __put_user(env->aregs[7], &sc->sc_usp); | |
4281 | err |= __put_user(env->dregs[0], &sc->sc_d0); | |
4282 | err |= __put_user(env->dregs[1], &sc->sc_d1); | |
4283 | err |= __put_user(env->aregs[0], &sc->sc_a0); | |
4284 | err |= __put_user(env->aregs[1], &sc->sc_a1); | |
4285 | err |= __put_user(env->sr, &sc->sc_sr); | |
4286 | err |= __put_user(env->pc, &sc->sc_pc); | |
4287 | ||
4288 | return err; | |
4289 | } | |
4290 | ||
4291 | static int | |
4292 | restore_sigcontext(CPUState *env, struct target_sigcontext *sc, int *pd0) | |
4293 | { | |
4294 | int err = 0; | |
4295 | int temp; | |
4296 | ||
4297 | err |= __get_user(env->aregs[7], &sc->sc_usp); | |
4298 | err |= __get_user(env->dregs[1], &sc->sc_d1); | |
4299 | err |= __get_user(env->aregs[0], &sc->sc_a0); | |
4300 | err |= __get_user(env->aregs[1], &sc->sc_a1); | |
4301 | err |= __get_user(env->pc, &sc->sc_pc); | |
4302 | err |= __get_user(temp, &sc->sc_sr); | |
4303 | env->sr = (env->sr & 0xff00) | (temp & 0xff); | |
4304 | ||
4305 | *pd0 = tswapl(sc->sc_d0); | |
4306 | ||
4307 | return err; | |
4308 | } | |
4309 | ||
4310 | /* | |
4311 | * Determine which stack to use.. | |
4312 | */ | |
4313 | static inline abi_ulong | |
4314 | get_sigframe(struct target_sigaction *ka, CPUState *regs, size_t frame_size) | |
4315 | { | |
4316 | unsigned long sp; | |
4317 | ||
4318 | sp = regs->aregs[7]; | |
4319 | ||
4320 | /* This is the X/Open sanctioned signal stack switching. */ | |
4321 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { | |
4322 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
4323 | } | |
4324 | ||
4325 | return ((sp - frame_size) & -8UL); | |
4326 | } | |
4327 | ||
4328 | static void setup_frame(int sig, struct target_sigaction *ka, | |
c227f099 | 4329 | target_sigset_t *set, CPUState *env) |
492a8744 LV |
4330 | { |
4331 | struct target_sigframe *frame; | |
4332 | abi_ulong frame_addr; | |
4333 | abi_ulong retcode_addr; | |
4334 | abi_ulong sc_addr; | |
4335 | int err = 0; | |
4336 | int i; | |
4337 | ||
4338 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
4339 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
4340 | goto give_sigsegv; | |
4341 | ||
4342 | err |= __put_user(sig, &frame->sig); | |
4343 | ||
4344 | sc_addr = frame_addr + offsetof(struct target_sigframe, sc); | |
4345 | err |= __put_user(sc_addr, &frame->psc); | |
4346 | ||
4347 | err |= setup_sigcontext(&frame->sc, env, set->sig[0]); | |
4348 | if (err) | |
4349 | goto give_sigsegv; | |
4350 | ||
4351 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
4352 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
4353 | goto give_sigsegv; | |
4354 | } | |
4355 | ||
4356 | /* Set up to return from userspace. */ | |
4357 | ||
4358 | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode); | |
4359 | err |= __put_user(retcode_addr, &frame->pretcode); | |
4360 | ||
4361 | /* moveq #,d0; trap #0 */ | |
4362 | ||
4363 | err |= __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16), | |
4364 | (long *)(frame->retcode)); | |
4365 | ||
4366 | if (err) | |
4367 | goto give_sigsegv; | |
4368 | ||
4369 | /* Set up to return from userspace */ | |
4370 | ||
4371 | env->aregs[7] = frame_addr; | |
4372 | env->pc = ka->_sa_handler; | |
4373 | ||
4374 | unlock_user_struct(frame, frame_addr, 1); | |
4375 | return; | |
4376 | ||
4377 | give_sigsegv: | |
4378 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 4379 | force_sig(TARGET_SIGSEGV); |
492a8744 LV |
4380 | } |
4381 | ||
7181155d LV |
4382 | static inline int target_rt_setup_ucontext(struct target_ucontext *uc, |
4383 | CPUState *env) | |
4384 | { | |
60e99246 | 4385 | target_greg_t *gregs = uc->tuc_mcontext.gregs; |
7181155d LV |
4386 | int err; |
4387 | ||
60e99246 | 4388 | err = __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version); |
7181155d LV |
4389 | err |= __put_user(env->dregs[0], &gregs[0]); |
4390 | err |= __put_user(env->dregs[1], &gregs[1]); | |
4391 | err |= __put_user(env->dregs[2], &gregs[2]); | |
4392 | err |= __put_user(env->dregs[3], &gregs[3]); | |
4393 | err |= __put_user(env->dregs[4], &gregs[4]); | |
4394 | err |= __put_user(env->dregs[5], &gregs[5]); | |
4395 | err |= __put_user(env->dregs[6], &gregs[6]); | |
4396 | err |= __put_user(env->dregs[7], &gregs[7]); | |
4397 | err |= __put_user(env->aregs[0], &gregs[8]); | |
4398 | err |= __put_user(env->aregs[1], &gregs[9]); | |
4399 | err |= __put_user(env->aregs[2], &gregs[10]); | |
4400 | err |= __put_user(env->aregs[3], &gregs[11]); | |
4401 | err |= __put_user(env->aregs[4], &gregs[12]); | |
4402 | err |= __put_user(env->aregs[5], &gregs[13]); | |
4403 | err |= __put_user(env->aregs[6], &gregs[14]); | |
4404 | err |= __put_user(env->aregs[7], &gregs[15]); | |
4405 | err |= __put_user(env->pc, &gregs[16]); | |
4406 | err |= __put_user(env->sr, &gregs[17]); | |
4407 | ||
4408 | return err; | |
4409 | } | |
4410 | ||
4411 | static inline int target_rt_restore_ucontext(CPUState *env, | |
4412 | struct target_ucontext *uc, | |
4413 | int *pd0) | |
4414 | { | |
4415 | int temp; | |
4416 | int err; | |
60e99246 | 4417 | target_greg_t *gregs = uc->tuc_mcontext.gregs; |
7181155d | 4418 | |
60e99246 | 4419 | err = __get_user(temp, &uc->tuc_mcontext.version); |
7181155d LV |
4420 | if (temp != TARGET_MCONTEXT_VERSION) |
4421 | goto badframe; | |
4422 | ||
4423 | /* restore passed registers */ | |
4424 | err |= __get_user(env->dregs[0], &gregs[0]); | |
4425 | err |= __get_user(env->dregs[1], &gregs[1]); | |
4426 | err |= __get_user(env->dregs[2], &gregs[2]); | |
4427 | err |= __get_user(env->dregs[3], &gregs[3]); | |
4428 | err |= __get_user(env->dregs[4], &gregs[4]); | |
4429 | err |= __get_user(env->dregs[5], &gregs[5]); | |
4430 | err |= __get_user(env->dregs[6], &gregs[6]); | |
4431 | err |= __get_user(env->dregs[7], &gregs[7]); | |
4432 | err |= __get_user(env->aregs[0], &gregs[8]); | |
4433 | err |= __get_user(env->aregs[1], &gregs[9]); | |
4434 | err |= __get_user(env->aregs[2], &gregs[10]); | |
4435 | err |= __get_user(env->aregs[3], &gregs[11]); | |
4436 | err |= __get_user(env->aregs[4], &gregs[12]); | |
4437 | err |= __get_user(env->aregs[5], &gregs[13]); | |
4438 | err |= __get_user(env->aregs[6], &gregs[14]); | |
4439 | err |= __get_user(env->aregs[7], &gregs[15]); | |
4440 | err |= __get_user(env->pc, &gregs[16]); | |
4441 | err |= __get_user(temp, &gregs[17]); | |
4442 | env->sr = (env->sr & 0xff00) | (temp & 0xff); | |
4443 | ||
4444 | *pd0 = env->dregs[0]; | |
4445 | return err; | |
4446 | ||
4447 | badframe: | |
4448 | return 1; | |
4449 | } | |
4450 | ||
492a8744 | 4451 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
4452 | target_siginfo_t *info, |
4453 | target_sigset_t *set, CPUState *env) | |
492a8744 | 4454 | { |
7181155d LV |
4455 | struct target_rt_sigframe *frame; |
4456 | abi_ulong frame_addr; | |
4457 | abi_ulong retcode_addr; | |
4458 | abi_ulong info_addr; | |
4459 | abi_ulong uc_addr; | |
4460 | int err = 0; | |
4461 | int i; | |
4462 | ||
4463 | frame_addr = get_sigframe(ka, env, sizeof *frame); | |
4464 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
4465 | goto give_sigsegv; | |
4466 | ||
4467 | err |= __put_user(sig, &frame->sig); | |
4468 | ||
4469 | info_addr = frame_addr + offsetof(struct target_rt_sigframe, info); | |
4470 | err |= __put_user(info_addr, &frame->pinfo); | |
4471 | ||
4472 | uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
4473 | err |= __put_user(uc_addr, &frame->puc); | |
4474 | ||
4475 | err |= copy_siginfo_to_user(&frame->info, info); | |
4476 | ||
4477 | /* Create the ucontext */ | |
4478 | ||
60e99246 AJ |
4479 | err |= __put_user(0, &frame->uc.tuc_flags); |
4480 | err |= __put_user(0, &frame->uc.tuc_link); | |
7181155d | 4481 | err |= __put_user(target_sigaltstack_used.ss_sp, |
60e99246 | 4482 | &frame->uc.tuc_stack.ss_sp); |
7181155d | 4483 | err |= __put_user(sas_ss_flags(env->aregs[7]), |
60e99246 | 4484 | &frame->uc.tuc_stack.ss_flags); |
7181155d | 4485 | err |= __put_user(target_sigaltstack_used.ss_size, |
60e99246 | 4486 | &frame->uc.tuc_stack.ss_size); |
7181155d LV |
4487 | err |= target_rt_setup_ucontext(&frame->uc, env); |
4488 | ||
4489 | if (err) | |
4490 | goto give_sigsegv; | |
4491 | ||
4492 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
60e99246 | 4493 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
7181155d LV |
4494 | goto give_sigsegv; |
4495 | } | |
4496 | ||
4497 | /* Set up to return from userspace. */ | |
4498 | ||
4499 | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode); | |
4500 | err |= __put_user(retcode_addr, &frame->pretcode); | |
4501 | ||
4502 | /* moveq #,d0; notb d0; trap #0 */ | |
4503 | ||
4504 | err |= __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16), | |
4505 | (long *)(frame->retcode + 0)); | |
4506 | err |= __put_user(0x4e40, (short *)(frame->retcode + 4)); | |
4507 | ||
4508 | if (err) | |
4509 | goto give_sigsegv; | |
4510 | ||
4511 | /* Set up to return from userspace */ | |
4512 | ||
4513 | env->aregs[7] = frame_addr; | |
4514 | env->pc = ka->_sa_handler; | |
4515 | ||
4516 | unlock_user_struct(frame, frame_addr, 1); | |
4517 | return; | |
4518 | ||
4519 | give_sigsegv: | |
4520 | unlock_user_struct(frame, frame_addr, 1); | |
66393fb9 | 4521 | force_sig(TARGET_SIGSEGV); |
492a8744 LV |
4522 | } |
4523 | ||
4524 | long do_sigreturn(CPUState *env) | |
4525 | { | |
4526 | struct target_sigframe *frame; | |
4527 | abi_ulong frame_addr = env->aregs[7] - 4; | |
c227f099 | 4528 | target_sigset_t target_set; |
492a8744 LV |
4529 | sigset_t set; |
4530 | int d0, i; | |
4531 | ||
4532 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
4533 | goto badframe; | |
4534 | ||
4535 | /* set blocked signals */ | |
4536 | ||
4537 | if (__get_user(target_set.sig[0], &frame->sc.sc_mask)) | |
4538 | goto badframe; | |
4539 | ||
4540 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
4541 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
4542 | goto badframe; | |
4543 | } | |
4544 | ||
4545 | target_to_host_sigset_internal(&set, &target_set); | |
4546 | sigprocmask(SIG_SETMASK, &set, NULL); | |
4547 | ||
4548 | /* restore registers */ | |
4549 | ||
4550 | if (restore_sigcontext(env, &frame->sc, &d0)) | |
4551 | goto badframe; | |
4552 | ||
4553 | unlock_user_struct(frame, frame_addr, 0); | |
4554 | return d0; | |
4555 | ||
4556 | badframe: | |
4557 | unlock_user_struct(frame, frame_addr, 0); | |
4558 | force_sig(TARGET_SIGSEGV); | |
4559 | return 0; | |
4560 | } | |
4561 | ||
4562 | long do_rt_sigreturn(CPUState *env) | |
4563 | { | |
7181155d LV |
4564 | struct target_rt_sigframe *frame; |
4565 | abi_ulong frame_addr = env->aregs[7] - 4; | |
c227f099 | 4566 | target_sigset_t target_set; |
7181155d LV |
4567 | sigset_t set; |
4568 | int d0; | |
4569 | ||
4570 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
4571 | goto badframe; | |
4572 | ||
4573 | target_to_host_sigset_internal(&set, &target_set); | |
4574 | sigprocmask(SIG_SETMASK, &set, NULL); | |
4575 | ||
4576 | /* restore registers */ | |
4577 | ||
4578 | if (target_rt_restore_ucontext(env, &frame->uc, &d0)) | |
4579 | goto badframe; | |
4580 | ||
4581 | if (do_sigaltstack(frame_addr + | |
60e99246 | 4582 | offsetof(struct target_rt_sigframe, uc.tuc_stack), |
7181155d LV |
4583 | 0, get_sp_from_cpustate(env)) == -EFAULT) |
4584 | goto badframe; | |
4585 | ||
4586 | unlock_user_struct(frame, frame_addr, 0); | |
4587 | return d0; | |
4588 | ||
4589 | badframe: | |
4590 | unlock_user_struct(frame, frame_addr, 0); | |
4591 | force_sig(TARGET_SIGSEGV); | |
4592 | return 0; | |
492a8744 LV |
4593 | } |
4594 | ||
6049f4f8 RH |
4595 | #elif defined(TARGET_ALPHA) |
4596 | ||
4597 | struct target_sigcontext { | |
4598 | abi_long sc_onstack; | |
4599 | abi_long sc_mask; | |
4600 | abi_long sc_pc; | |
4601 | abi_long sc_ps; | |
4602 | abi_long sc_regs[32]; | |
4603 | abi_long sc_ownedfp; | |
4604 | abi_long sc_fpregs[32]; | |
4605 | abi_ulong sc_fpcr; | |
4606 | abi_ulong sc_fp_control; | |
4607 | abi_ulong sc_reserved1; | |
4608 | abi_ulong sc_reserved2; | |
4609 | abi_ulong sc_ssize; | |
4610 | abi_ulong sc_sbase; | |
4611 | abi_ulong sc_traparg_a0; | |
4612 | abi_ulong sc_traparg_a1; | |
4613 | abi_ulong sc_traparg_a2; | |
4614 | abi_ulong sc_fp_trap_pc; | |
4615 | abi_ulong sc_fp_trigger_sum; | |
4616 | abi_ulong sc_fp_trigger_inst; | |
4617 | }; | |
4618 | ||
4619 | struct target_ucontext { | |
60e99246 AJ |
4620 | abi_ulong tuc_flags; |
4621 | abi_ulong tuc_link; | |
4622 | abi_ulong tuc_osf_sigmask; | |
4623 | target_stack_t tuc_stack; | |
4624 | struct target_sigcontext tuc_mcontext; | |
4625 | target_sigset_t tuc_sigmask; | |
6049f4f8 RH |
4626 | }; |
4627 | ||
4628 | struct target_sigframe { | |
4629 | struct target_sigcontext sc; | |
4630 | unsigned int retcode[3]; | |
4631 | }; | |
4632 | ||
4633 | struct target_rt_sigframe { | |
4634 | target_siginfo_t info; | |
4635 | struct target_ucontext uc; | |
4636 | unsigned int retcode[3]; | |
4637 | }; | |
4638 | ||
4639 | #define INSN_MOV_R30_R16 0x47fe0410 | |
4640 | #define INSN_LDI_R0 0x201f0000 | |
4641 | #define INSN_CALLSYS 0x00000083 | |
4642 | ||
4643 | static int setup_sigcontext(struct target_sigcontext *sc, CPUState *env, | |
4644 | abi_ulong frame_addr, target_sigset_t *set) | |
4645 | { | |
4646 | int i, err = 0; | |
4647 | ||
4648 | err |= __put_user(on_sig_stack(frame_addr), &sc->sc_onstack); | |
4649 | err |= __put_user(set->sig[0], &sc->sc_mask); | |
4650 | err |= __put_user(env->pc, &sc->sc_pc); | |
4651 | err |= __put_user(8, &sc->sc_ps); | |
4652 | ||
4653 | for (i = 0; i < 31; ++i) { | |
4654 | err |= __put_user(env->ir[i], &sc->sc_regs[i]); | |
4655 | } | |
4656 | err |= __put_user(0, &sc->sc_regs[31]); | |
4657 | ||
4658 | for (i = 0; i < 31; ++i) { | |
4659 | err |= __put_user(env->fir[i], &sc->sc_fpregs[i]); | |
4660 | } | |
4661 | err |= __put_user(0, &sc->sc_fpregs[31]); | |
4662 | err |= __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr); | |
4663 | ||
4664 | err |= __put_user(0, &sc->sc_traparg_a0); /* FIXME */ | |
4665 | err |= __put_user(0, &sc->sc_traparg_a1); /* FIXME */ | |
4666 | err |= __put_user(0, &sc->sc_traparg_a2); /* FIXME */ | |
4667 | ||
4668 | return err; | |
4669 | } | |
4670 | ||
4671 | static int restore_sigcontext(CPUState *env, struct target_sigcontext *sc) | |
4672 | { | |
4673 | uint64_t fpcr; | |
4674 | int i, err = 0; | |
4675 | ||
4676 | err |= __get_user(env->pc, &sc->sc_pc); | |
4677 | ||
4678 | for (i = 0; i < 31; ++i) { | |
4679 | err |= __get_user(env->ir[i], &sc->sc_regs[i]); | |
4680 | } | |
4681 | for (i = 0; i < 31; ++i) { | |
4682 | err |= __get_user(env->fir[i], &sc->sc_fpregs[i]); | |
4683 | } | |
4684 | ||
4685 | err |= __get_user(fpcr, &sc->sc_fpcr); | |
4686 | cpu_alpha_store_fpcr(env, fpcr); | |
4687 | ||
4688 | return err; | |
4689 | } | |
4690 | ||
4691 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, | |
4692 | CPUState *env, unsigned long framesize) | |
4693 | { | |
4694 | abi_ulong sp = env->ir[IR_SP]; | |
4695 | ||
4696 | /* This is the X/Open sanctioned signal stack switching. */ | |
4697 | if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) { | |
4698 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
4699 | } | |
4700 | return (sp - framesize) & -32; | |
4701 | } | |
4702 | ||
4703 | static void setup_frame(int sig, struct target_sigaction *ka, | |
4704 | target_sigset_t *set, CPUState *env) | |
4705 | { | |
4706 | abi_ulong frame_addr, r26; | |
4707 | struct target_sigframe *frame; | |
4708 | int err = 0; | |
4709 | ||
4710 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
4711 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
4712 | goto give_sigsegv; | |
4713 | } | |
4714 | ||
4715 | err |= setup_sigcontext(&frame->sc, env, frame_addr, set); | |
4716 | ||
4717 | if (ka->sa_restorer) { | |
4718 | r26 = ka->sa_restorer; | |
4719 | } else { | |
4720 | err |= __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); | |
4721 | err |= __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn, | |
4722 | &frame->retcode[1]); | |
4723 | err |= __put_user(INSN_CALLSYS, &frame->retcode[2]); | |
4724 | /* imb() */ | |
4725 | r26 = frame_addr; | |
4726 | } | |
4727 | ||
4728 | unlock_user_struct(frame, frame_addr, 1); | |
4729 | ||
4730 | if (err) { | |
4731 | give_sigsegv: | |
4732 | if (sig == TARGET_SIGSEGV) { | |
4733 | ka->_sa_handler = TARGET_SIG_DFL; | |
4734 | } | |
4735 | force_sig(TARGET_SIGSEGV); | |
4736 | } | |
4737 | ||
4738 | env->ir[IR_RA] = r26; | |
4739 | env->ir[IR_PV] = env->pc = ka->_sa_handler; | |
4740 | env->ir[IR_A0] = sig; | |
4741 | env->ir[IR_A1] = 0; | |
4742 | env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc); | |
4743 | env->ir[IR_SP] = frame_addr; | |
4744 | } | |
4745 | ||
4746 | static void setup_rt_frame(int sig, struct target_sigaction *ka, | |
4747 | target_siginfo_t *info, | |
4748 | target_sigset_t *set, CPUState *env) | |
4749 | { | |
4750 | abi_ulong frame_addr, r26; | |
4751 | struct target_rt_sigframe *frame; | |
4752 | int i, err = 0; | |
4753 | ||
4754 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
4755 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { | |
4756 | goto give_sigsegv; | |
4757 | } | |
4758 | ||
4759 | err |= copy_siginfo_to_user(&frame->info, info); | |
4760 | ||
60e99246 AJ |
4761 | err |= __put_user(0, &frame->uc.tuc_flags); |
4762 | err |= __put_user(0, &frame->uc.tuc_link); | |
4763 | err |= __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask); | |
6049f4f8 | 4764 | err |= __put_user(target_sigaltstack_used.ss_sp, |
60e99246 | 4765 | &frame->uc.tuc_stack.ss_sp); |
6049f4f8 | 4766 | err |= __put_user(sas_ss_flags(env->ir[IR_SP]), |
60e99246 | 4767 | &frame->uc.tuc_stack.ss_flags); |
6049f4f8 | 4768 | err |= __put_user(target_sigaltstack_used.ss_size, |
60e99246 AJ |
4769 | &frame->uc.tuc_stack.ss_size); |
4770 | err |= setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set); | |
6049f4f8 | 4771 | for (i = 0; i < TARGET_NSIG_WORDS; ++i) { |
60e99246 | 4772 | err |= __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); |
6049f4f8 RH |
4773 | } |
4774 | ||
4775 | if (ka->sa_restorer) { | |
4776 | r26 = ka->sa_restorer; | |
4777 | } else { | |
4778 | err |= __put_user(INSN_MOV_R30_R16, &frame->retcode[0]); | |
4779 | err |= __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn, | |
4780 | &frame->retcode[1]); | |
4781 | err |= __put_user(INSN_CALLSYS, &frame->retcode[2]); | |
4782 | /* imb(); */ | |
4783 | r26 = frame_addr; | |
4784 | } | |
4785 | ||
4786 | if (err) { | |
4787 | give_sigsegv: | |
4788 | if (sig == TARGET_SIGSEGV) { | |
4789 | ka->_sa_handler = TARGET_SIG_DFL; | |
4790 | } | |
4791 | force_sig(TARGET_SIGSEGV); | |
4792 | } | |
4793 | ||
4794 | env->ir[IR_RA] = r26; | |
4795 | env->ir[IR_PV] = env->pc = ka->_sa_handler; | |
4796 | env->ir[IR_A0] = sig; | |
4797 | env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info); | |
4798 | env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc); | |
4799 | env->ir[IR_SP] = frame_addr; | |
4800 | } | |
4801 | ||
4802 | long do_sigreturn(CPUState *env) | |
4803 | { | |
4804 | struct target_sigcontext *sc; | |
4805 | abi_ulong sc_addr = env->ir[IR_A0]; | |
4806 | target_sigset_t target_set; | |
4807 | sigset_t set; | |
4808 | ||
4809 | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) { | |
4810 | goto badframe; | |
4811 | } | |
4812 | ||
4813 | target_sigemptyset(&target_set); | |
4814 | if (__get_user(target_set.sig[0], &sc->sc_mask)) { | |
4815 | goto badframe; | |
4816 | } | |
4817 | ||
4818 | target_to_host_sigset_internal(&set, &target_set); | |
4819 | sigprocmask(SIG_SETMASK, &set, NULL); | |
4820 | ||
4821 | if (restore_sigcontext(env, sc)) { | |
4822 | goto badframe; | |
4823 | } | |
4824 | unlock_user_struct(sc, sc_addr, 0); | |
4825 | return env->ir[IR_V0]; | |
4826 | ||
4827 | badframe: | |
4828 | unlock_user_struct(sc, sc_addr, 0); | |
4829 | force_sig(TARGET_SIGSEGV); | |
4830 | } | |
4831 | ||
4832 | long do_rt_sigreturn(CPUState *env) | |
4833 | { | |
4834 | abi_ulong frame_addr = env->ir[IR_A0]; | |
4835 | struct target_rt_sigframe *frame; | |
4836 | sigset_t set; | |
4837 | ||
4838 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { | |
4839 | goto badframe; | |
4840 | } | |
60e99246 | 4841 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
6049f4f8 RH |
4842 | sigprocmask(SIG_SETMASK, &set, NULL); |
4843 | ||
60e99246 | 4844 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) { |
6049f4f8 RH |
4845 | goto badframe; |
4846 | } | |
4847 | if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe, | |
60e99246 | 4848 | uc.tuc_stack), |
6049f4f8 RH |
4849 | 0, env->ir[IR_SP]) == -EFAULT) { |
4850 | goto badframe; | |
4851 | } | |
4852 | ||
4853 | unlock_user_struct(frame, frame_addr, 0); | |
4854 | return env->ir[IR_V0]; | |
4855 | ||
4856 | ||
4857 | badframe: | |
4858 | unlock_user_struct(frame, frame_addr, 0); | |
4859 | force_sig(TARGET_SIGSEGV); | |
4860 | } | |
4861 | ||
b346ff46 FB |
4862 | #else |
4863 | ||
624f7979 | 4864 | static void setup_frame(int sig, struct target_sigaction *ka, |
c227f099 | 4865 | target_sigset_t *set, CPUState *env) |
b346ff46 FB |
4866 | { |
4867 | fprintf(stderr, "setup_frame: not implemented\n"); | |
4868 | } | |
4869 | ||
624f7979 | 4870 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c227f099 AL |
4871 | target_siginfo_t *info, |
4872 | target_sigset_t *set, CPUState *env) | |
b346ff46 FB |
4873 | { |
4874 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
4875 | } | |
4876 | ||
4877 | long do_sigreturn(CPUState *env) | |
4878 | { | |
4879 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 4880 | return -TARGET_ENOSYS; |
b346ff46 FB |
4881 | } |
4882 | ||
4883 | long do_rt_sigreturn(CPUState *env) | |
4884 | { | |
4885 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 4886 | return -TARGET_ENOSYS; |
b346ff46 FB |
4887 | } |
4888 | ||
66fb9763 FB |
4889 | #endif |
4890 | ||
624f7979 | 4891 | void process_pending_signals(CPUState *cpu_env) |
66fb9763 FB |
4892 | { |
4893 | int sig; | |
992f48a0 | 4894 | abi_ulong handler; |
9de5e440 | 4895 | sigset_t set, old_set; |
c227f099 | 4896 | target_sigset_t target_old_set; |
624f7979 PB |
4897 | struct emulated_sigtable *k; |
4898 | struct target_sigaction *sa; | |
66fb9763 | 4899 | struct sigqueue *q; |
624f7979 | 4900 | TaskState *ts = cpu_env->opaque; |
3b46e624 | 4901 | |
624f7979 | 4902 | if (!ts->signal_pending) |
31e31b8a FB |
4903 | return; |
4904 | ||
624f7979 PB |
4905 | /* FIXME: This is not threadsafe. */ |
4906 | k = ts->sigtab; | |
66fb9763 FB |
4907 | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
4908 | if (k->pending) | |
31e31b8a | 4909 | goto handle_signal; |
66fb9763 | 4910 | k++; |
31e31b8a FB |
4911 | } |
4912 | /* if no signal is pending, just return */ | |
624f7979 | 4913 | ts->signal_pending = 0; |
31e31b8a | 4914 | return; |
66fb9763 | 4915 | |
31e31b8a | 4916 | handle_signal: |
66fb9763 | 4917 | #ifdef DEBUG_SIGNAL |
bc8a22cc | 4918 | fprintf(stderr, "qemu: process signal %d\n", sig); |
66fb9763 FB |
4919 | #endif |
4920 | /* dequeue signal */ | |
4921 | q = k->first; | |
4922 | k->first = q->next; | |
4923 | if (!k->first) | |
4924 | k->pending = 0; | |
3b46e624 | 4925 | |
1fddef4b FB |
4926 | sig = gdb_handlesig (cpu_env, sig); |
4927 | if (!sig) { | |
ca587a8e AJ |
4928 | sa = NULL; |
4929 | handler = TARGET_SIG_IGN; | |
4930 | } else { | |
4931 | sa = &sigact_table[sig - 1]; | |
4932 | handler = sa->_sa_handler; | |
1fddef4b | 4933 | } |
66fb9763 | 4934 | |
66fb9763 | 4935 | if (handler == TARGET_SIG_DFL) { |
ca587a8e AJ |
4936 | /* default handler : ignore some signal. The other are job control or fatal */ |
4937 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) { | |
4938 | kill(getpid(),SIGSTOP); | |
4939 | } else if (sig != TARGET_SIGCHLD && | |
4940 | sig != TARGET_SIGURG && | |
4941 | sig != TARGET_SIGWINCH && | |
4942 | sig != TARGET_SIGCONT) { | |
66fb9763 FB |
4943 | force_sig(sig); |
4944 | } | |
4945 | } else if (handler == TARGET_SIG_IGN) { | |
4946 | /* ignore sig */ | |
4947 | } else if (handler == TARGET_SIG_ERR) { | |
4948 | force_sig(sig); | |
4949 | } else { | |
9de5e440 | 4950 | /* compute the blocked signals during the handler execution */ |
624f7979 | 4951 | target_to_host_sigset(&set, &sa->sa_mask); |
9de5e440 FB |
4952 | /* SA_NODEFER indicates that the current signal should not be |
4953 | blocked during the handler */ | |
624f7979 | 4954 | if (!(sa->sa_flags & TARGET_SA_NODEFER)) |
9de5e440 | 4955 | sigaddset(&set, target_to_host_signal(sig)); |
3b46e624 | 4956 | |
9de5e440 FB |
4957 | /* block signals in the handler using Linux */ |
4958 | sigprocmask(SIG_BLOCK, &set, &old_set); | |
4959 | /* save the previous blocked signal state to restore it at the | |
4960 | end of the signal execution (see do_sigreturn) */ | |
9231944d | 4961 | host_to_target_sigset_internal(&target_old_set, &old_set); |
9de5e440 | 4962 | |
bc8a22cc | 4963 | /* if the CPU is in VM86 mode, we restore the 32 bit values */ |
84409ddb | 4964 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
bc8a22cc FB |
4965 | { |
4966 | CPUX86State *env = cpu_env; | |
4967 | if (env->eflags & VM_MASK) | |
4968 | save_v86_state(env); | |
4969 | } | |
4970 | #endif | |
9de5e440 | 4971 | /* prepare the stack frame of the virtual CPU */ |
624f7979 PB |
4972 | if (sa->sa_flags & TARGET_SA_SIGINFO) |
4973 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
66fb9763 | 4974 | else |
624f7979 PB |
4975 | setup_frame(sig, sa, &target_old_set, cpu_env); |
4976 | if (sa->sa_flags & TARGET_SA_RESETHAND) | |
4977 | sa->_sa_handler = TARGET_SIG_DFL; | |
31e31b8a | 4978 | } |
66fb9763 | 4979 | if (q != &k->info) |
624f7979 | 4980 | free_sigqueue(cpu_env, q); |
66fb9763 | 4981 | } |