]> git.proxmox.com Git - mirror_qemu.git/blame - linux-user/signal.c
projects / mirror_qemu.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
linux-user: convert DEBUG_SIGNAL logging to tracepoints
[mirror_qemu.git] / linux-user / signal.c
CommitLineData
31e31b8a 1/*
66fb9763 2 * Emulation of Linux signals
5fafdf24 3 *
31e31b8a
FB		 4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
8167ee88 17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
31e31b8a
FB		 18 */
19#include <stdlib.h>
20#include <stdio.h>
66fb9763 21#include <string.h>
31e31b8a 22#include <stdarg.h>
2677e107 23#include <unistd.h>
66fb9763 24#include <errno.h>
31e31b8a 25#include <sys/ucontext.h>
edf8e2af 26#include <sys/resource.h>
31e31b8a 27
3ef693a0 28#include "qemu.h"
7d99a001 29#include "qemu-common.h"
992f48a0 30#include "target_signal.h"
c8ee0a44 31#include "trace.h"
66fb9763 32
249c4c32 33static struct target_sigaltstack target_sigaltstack_used = {
a04e134a
TS		 34 .ss_sp = 0,
35 .ss_size = 0,
36 .ss_flags = TARGET_SS_DISABLE,
37};
38
624f7979 39static struct target_sigaction sigact_table[TARGET_NSIG];
31e31b8a 40
5fafdf24 41static void host_signal_handler(int host_signum, siginfo_t *info,
66fb9763
FB		 42 void *puc);
43
3ca05588 44static uint8_t host_to_target_signal_table[_NSIG] = {
9e5f5284
FB		 45 [SIGHUP] = TARGET_SIGHUP,
46 [SIGINT] = TARGET_SIGINT,
47 [SIGQUIT] = TARGET_SIGQUIT,
48 [SIGILL] = TARGET_SIGILL,
49 [SIGTRAP] = TARGET_SIGTRAP,
50 [SIGABRT] = TARGET_SIGABRT,
01e3b763 51/* [SIGIOT] = TARGET_SIGIOT,*/
9e5f5284
FB		 52 [SIGBUS] = TARGET_SIGBUS,
53 [SIGFPE] = TARGET_SIGFPE,
54 [SIGKILL] = TARGET_SIGKILL,
55 [SIGUSR1] = TARGET_SIGUSR1,
56 [SIGSEGV] = TARGET_SIGSEGV,
57 [SIGUSR2] = TARGET_SIGUSR2,
58 [SIGPIPE] = TARGET_SIGPIPE,
59 [SIGALRM] = TARGET_SIGALRM,
60 [SIGTERM] = TARGET_SIGTERM,
61#ifdef SIGSTKFLT
62 [SIGSTKFLT] = TARGET_SIGSTKFLT,
63#endif
64 [SIGCHLD] = TARGET_SIGCHLD,
65 [SIGCONT] = TARGET_SIGCONT,
66 [SIGSTOP] = TARGET_SIGSTOP,
67 [SIGTSTP] = TARGET_SIGTSTP,
68 [SIGTTIN] = TARGET_SIGTTIN,
69 [SIGTTOU] = TARGET_SIGTTOU,
70 [SIGURG] = TARGET_SIGURG,
71 [SIGXCPU] = TARGET_SIGXCPU,
72 [SIGXFSZ] = TARGET_SIGXFSZ,
73 [SIGVTALRM] = TARGET_SIGVTALRM,
74 [SIGPROF] = TARGET_SIGPROF,
75 [SIGWINCH] = TARGET_SIGWINCH,
76 [SIGIO] = TARGET_SIGIO,
77 [SIGPWR] = TARGET_SIGPWR,
78 [SIGSYS] = TARGET_SIGSYS,
79 /* next signals stay the same */
624f7979 80 /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with
b4916d7b 81 host libpthread signals. This assumes no one actually uses SIGRTMAX :-/
624f7979
PB		 82 To fix this properly we need to do manual signal delivery multiplexed
83 over a single host signal. */
84 [__SIGRTMIN] = __SIGRTMAX,
85 [__SIGRTMAX] = __SIGRTMIN,
9e5f5284 86};
3ca05588 87static uint8_t target_to_host_signal_table[_NSIG];
9e5f5284 88
a04e134a
TS		 89static inline int on_sig_stack(unsigned long sp)
90{
91 return (sp - target_sigaltstack_used.ss_sp
92 < target_sigaltstack_used.ss_size);
93}
94
95static inline int sas_ss_flags(unsigned long sp)
96{
97 return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE
98 : on_sig_stack(sp) ? SS_ONSTACK : 0);
99}
100
1d9d8b55 101int host_to_target_signal(int sig)
31e31b8a 102{
167c50d8 103 if (sig < 0 || sig >= _NSIG)
4cb05961 104 return sig;
9e5f5284 105 return host_to_target_signal_table[sig];
31e31b8a
FB		 106}
107
4cb05961 108int target_to_host_signal(int sig)
31e31b8a 109{
167c50d8 110 if (sig < 0 || sig >= _NSIG)
4cb05961 111 return sig;
9e5f5284 112 return target_to_host_signal_table[sig];
31e31b8a
FB		 113}
114
c227f099 115static inline void target_sigemptyset(target_sigset_t *set)
f5545b5c
PB		 116{
117 memset(set, 0, sizeof(*set));
118}
119
c227f099 120static inline void target_sigaddset(target_sigset_t *set, int signum)
f5545b5c
PB		 121{
122 signum--;
123 abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW);
124 set->sig[signum / TARGET_NSIG_BPW] |= mask;
125}
126
c227f099 127static inline int target_sigismember(const target_sigset_t *set, int signum)
f5545b5c
PB		 128{
129 signum--;
130 abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW);
131 return ((set->sig[signum / TARGET_NSIG_BPW] & mask) != 0);
132}
133
c227f099 134static void host_to_target_sigset_internal(target_sigset_t *d,
9231944d 135 const sigset_t *s)
66fb9763
FB		 136{
137 int i;
f5545b5c
PB		 138 target_sigemptyset(d);
139 for (i = 1; i <= TARGET_NSIG; i++) {
140 if (sigismember(s, i)) {
141 target_sigaddset(d, host_to_target_signal(i));
142 }
66fb9763
FB		 143 }
144}
145
c227f099 146void host_to_target_sigset(target_sigset_t *d, const sigset_t *s)
9231944d 147{
c227f099 148 target_sigset_t d1;
9231944d
FB		 149 int i;
150
151 host_to_target_sigset_internal(&d1, s);
152 for(i = 0;i < TARGET_NSIG_WORDS; i++)
cbb21eed 153 d->sig[i] = tswapal(d1.sig[i]);
9231944d
FB		 154}
155
8fcd3692 156static void target_to_host_sigset_internal(sigset_t *d,
c227f099 157 const target_sigset_t *s)
66fb9763
FB		 158{
159 int i;
f5545b5c
PB		 160 sigemptyset(d);
161 for (i = 1; i <= TARGET_NSIG; i++) {
162 if (target_sigismember(s, i)) {
163 sigaddset(d, target_to_host_signal(i));
164 }
165 }
66fb9763
FB		 166}
167
c227f099 168void target_to_host_sigset(sigset_t *d, const target_sigset_t *s)
9231944d 169{
c227f099 170 target_sigset_t s1;
9231944d
FB		 171 int i;
172
173 for(i = 0;i < TARGET_NSIG_WORDS; i++)
cbb21eed 174 s1.sig[i] = tswapal(s->sig[i]);
9231944d
FB		 175 target_to_host_sigset_internal(d, &s1);
176}
3b46e624 177
992f48a0 178void host_to_target_old_sigset(abi_ulong *old_sigset,
66fb9763
FB		 179 const sigset_t *sigset)
180{
c227f099 181 target_sigset_t d;
9e5f5284
FB		 182 host_to_target_sigset(&d, sigset);
183 *old_sigset = d.sig[0];
66fb9763
FB		 184}
185
5fafdf24 186void target_to_host_old_sigset(sigset_t *sigset,
992f48a0 187 const abi_ulong *old_sigset)
66fb9763 188{
c227f099 189 target_sigset_t d;
9e5f5284
FB		 190 int i;
191
192 d.sig[0] = *old_sigset;
193 for(i = 1;i < TARGET_NSIG_WORDS; i++)
194 d.sig[i] = 0;
195 target_to_host_sigset(sigset, &d);
66fb9763
FB		 196}
197
1c275925
AB		 198/* Wrapper for sigprocmask function
199 * Emulates a sigprocmask in a safe way for the guest. Note that set and oldset
200 * are host signal set, not guest ones. This wraps the sigprocmask host calls
201 * that should be protected (calls originated from guest)
202 */
203int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset)
204{
a7ec0f98
PM		 205 int ret;
206 sigset_t val;
207 sigset_t *temp = NULL;
208 CPUState *cpu = thread_cpu;
209 TaskState *ts = (TaskState *)cpu->opaque;
210 bool segv_was_blocked = ts->sigsegv_blocked;
211
212 if (set) {
213 bool has_sigsegv = sigismember(set, SIGSEGV);
214 val = *set;
215 temp = &val;
216
217 sigdelset(temp, SIGSEGV);
218
219 switch (how) {
220 case SIG_BLOCK:
221 if (has_sigsegv) {
222 ts->sigsegv_blocked = true;
223 }
224 break;
225 case SIG_UNBLOCK:
226 if (has_sigsegv) {
227 ts->sigsegv_blocked = false;
228 }
229 break;
230 case SIG_SETMASK:
231 ts->sigsegv_blocked = has_sigsegv;
232 break;
233 default:
234 g_assert_not_reached();
235 }
236 }
237
238 ret = sigprocmask(how, temp, oldset);
239
240 if (oldset && segv_was_blocked) {
241 sigaddset(oldset, SIGSEGV);
242 }
243
244 return ret;
1c275925
AB		 245}
246
9de5e440
FB		 247/* siginfo conversion */
248
c227f099 249static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo,
9de5e440 250 const siginfo_t *info)
66fb9763 251{
a05c6409 252 int sig = host_to_target_signal(info->si_signo);
9de5e440
FB		 253 tinfo->si_signo = sig;
254 tinfo->si_errno = 0;
afd7cd92 255 tinfo->si_code = info->si_code;
a05c6409
RH		 256
257 if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV
258 || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) {
259 /* Should never come here, but who knows. The information for
260 the target is irrelevant. */
9de5e440 261 tinfo->_sifields._sigfault._addr = 0;
a05c6409
RH		 262 } else if (sig == TARGET_SIGIO) {
263 tinfo->_sifields._sigpoll._band = info->si_band;
7f7f7c84 264 tinfo->_sifields._sigpoll._fd = info->si_fd;
a05c6409
RH		 265 } else if (sig == TARGET_SIGCHLD) {
266 tinfo->_sifields._sigchld._pid = info->si_pid;
267 tinfo->_sifields._sigchld._uid = info->si_uid;
268 tinfo->_sifields._sigchld._status
269 = host_to_target_waitstatus(info->si_status);
270 tinfo->_sifields._sigchld._utime = info->si_utime;
271 tinfo->_sifields._sigchld._stime = info->si_stime;
9de5e440
FB		 272 } else if (sig >= TARGET_SIGRTMIN) {
273 tinfo->_sifields._rt._pid = info->si_pid;
274 tinfo->_sifields._rt._uid = info->si_uid;
275 /* XXX: potential problem if 64 bit */
a05c6409
RH		 276 tinfo->_sifields._rt._sigval.sival_ptr
277 = (abi_ulong)(unsigned long)info->si_value.sival_ptr;
9de5e440
FB		 278 }
279}
280
c227f099
AL		 281static void tswap_siginfo(target_siginfo_t *tinfo,
282 const target_siginfo_t *info)
9de5e440 283{
a05c6409 284 int sig = info->si_signo;
9de5e440 285 tinfo->si_signo = tswap32(sig);
66fb9763
FB		 286 tinfo->si_errno = tswap32(info->si_errno);
287 tinfo->si_code = tswap32(info->si_code);
a05c6409
RH		 288
289 if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV
290 || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) {
291 tinfo->_sifields._sigfault._addr
292 = tswapal(info->_sifields._sigfault._addr);
293 } else if (sig == TARGET_SIGIO) {
294 tinfo->_sifields._sigpoll._band
295 = tswap32(info->_sifields._sigpoll._band);
296 tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd);
297 } else if (sig == TARGET_SIGCHLD) {
298 tinfo->_sifields._sigchld._pid
299 = tswap32(info->_sifields._sigchld._pid);
300 tinfo->_sifields._sigchld._uid
301 = tswap32(info->_sifields._sigchld._uid);
302 tinfo->_sifields._sigchld._status
303 = tswap32(info->_sifields._sigchld._status);
304 tinfo->_sifields._sigchld._utime
305 = tswapal(info->_sifields._sigchld._utime);
306 tinfo->_sifields._sigchld._stime
307 = tswapal(info->_sifields._sigchld._stime);
9de5e440
FB		 308 } else if (sig >= TARGET_SIGRTMIN) {
309 tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid);
310 tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid);
a05c6409
RH		 311 tinfo->_sifields._rt._sigval.sival_ptr
312 = tswapal(info->_sifields._rt._sigval.sival_ptr);
9de5e440
FB		 313 }
314}
315
316
c227f099 317void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info)
9de5e440
FB		 318{
319 host_to_target_siginfo_noswap(tinfo, info);
320 tswap_siginfo(tinfo, tinfo);
66fb9763
FB		 321}
322
9de5e440 323/* XXX: we support only POSIX RT signals are used. */
aa1f17c1 324/* XXX: find a solution for 64 bit (additional malloced data is needed) */
c227f099 325void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo)
66fb9763
FB		 326{
327 info->si_signo = tswap32(tinfo->si_signo);
328 info->si_errno = tswap32(tinfo->si_errno);
329 info->si_code = tswap32(tinfo->si_code);
9de5e440
FB		 330 info->si_pid = tswap32(tinfo->_sifields._rt._pid);
331 info->si_uid = tswap32(tinfo->_sifields._rt._uid);
5fafdf24 332 info->si_value.sival_ptr =
cbb21eed 333 (void *)(long)tswapal(tinfo->_sifields._rt._sigval.sival_ptr);
66fb9763
FB		 334}
335
ca587a8e
AJ		 336static int fatal_signal (int sig)
337{
338 switch (sig) {
339 case TARGET_SIGCHLD:
340 case TARGET_SIGURG:
341 case TARGET_SIGWINCH:
342 /* Ignored by default. */
343 return 0;
344 case TARGET_SIGCONT:
345 case TARGET_SIGSTOP:
346 case TARGET_SIGTSTP:
347 case TARGET_SIGTTIN:
348 case TARGET_SIGTTOU:
349 /* Job control signals. */
350 return 0;
351 default:
352 return 1;
353 }
354}
355
edf8e2af
MW		 356/* returns 1 if given signal should dump core if not handled */
357static int core_dump_signal(int sig)
358{
359 switch (sig) {
360 case TARGET_SIGABRT:
361 case TARGET_SIGFPE:
362 case TARGET_SIGILL:
363 case TARGET_SIGQUIT:
364 case TARGET_SIGSEGV:
365 case TARGET_SIGTRAP:
366 case TARGET_SIGBUS:
367 return (1);
368 default:
369 return (0);
370 }
371}
372
31e31b8a
FB		 373void signal_init(void)
374{
375 struct sigaction act;
624f7979 376 struct sigaction oact;
9e5f5284 377 int i, j;
624f7979 378 int host_sig;
31e31b8a 379
9e5f5284 380 /* generate signal conversion tables */
3ca05588 381 for(i = 1; i < _NSIG; i++) {
9e5f5284
FB		 382 if (host_to_target_signal_table[i] == 0)
383 host_to_target_signal_table[i] = i;
384 }
3ca05588 385 for(i = 1; i < _NSIG; i++) {
9e5f5284
FB		 386 j = host_to_target_signal_table[i];
387 target_to_host_signal_table[j] = i;
388 }
3b46e624 389
9de5e440
FB		 390 /* set all host signal handlers. ALL signals are blocked during
391 the handlers to serialize them. */
624f7979
PB		 392 memset(sigact_table, 0, sizeof(sigact_table));
393
9de5e440 394 sigfillset(&act.sa_mask);
31e31b8a
FB		 395 act.sa_flags = SA_SIGINFO;
396 act.sa_sigaction = host_signal_handler;
624f7979
PB		 397 for(i = 1; i <= TARGET_NSIG; i++) {
398 host_sig = target_to_host_signal(i);
399 sigaction(host_sig, NULL, &oact);
400 if (oact.sa_sigaction == (void *)SIG_IGN) {
401 sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN;
402 } else if (oact.sa_sigaction == (void *)SIG_DFL) {
403 sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL;
404 }
405 /* If there's already a handler installed then something has
406 gone horribly wrong, so don't even try to handle that case. */
ca587a8e
AJ		 407 /* Install some handlers for our own use. We need at least
408 SIGSEGV and SIGBUS, to detect exceptions. We can not just
409 trap all signals because it affects syscall interrupt
410 behavior. But do trap all default-fatal signals. */
411 if (fatal_signal (i))
624f7979 412 sigaction(host_sig, &act, NULL);
31e31b8a 413 }
66fb9763
FB		 414}
415
416/* signal queue handling */
417
9349b4f9 418static inline struct sigqueue *alloc_sigqueue(CPUArchState *env)
66fb9763 419{
0429a971
AF		 420 CPUState *cpu = ENV_GET_CPU(env);
421 TaskState *ts = cpu->opaque;
624f7979 422 struct sigqueue *q = ts->first_free;
66fb9763
FB		 423 if (!q)
424 return NULL;
624f7979 425 ts->first_free = q->next;
66fb9763 426 return q;
31e31b8a
FB		 427}
428
9349b4f9 429static inline void free_sigqueue(CPUArchState *env, struct sigqueue *q)
66fb9763 430{
0429a971
AF		 431 CPUState *cpu = ENV_GET_CPU(env);
432 TaskState *ts = cpu->opaque;
433
624f7979
PB		 434 q->next = ts->first_free;
435 ts->first_free = q;
66fb9763
FB		 436}
437
9de5e440 438/* abort execution with signal */
66393fb9 439static void QEMU_NORETURN force_sig(int target_sig)
66fb9763 440{
0429a971
AF		 441 CPUState *cpu = thread_cpu;
442 CPUArchState *env = cpu->env_ptr;
443 TaskState *ts = (TaskState *)cpu->opaque;
edf8e2af 444 int host_sig, core_dumped = 0;
603e4fd7 445 struct sigaction act;
c8ee0a44 446
66393fb9 447 host_sig = target_to_host_signal(target_sig);
c8ee0a44 448 trace_user_force_sig(env, target_sig, host_sig);
a2247f8e 449 gdb_signalled(env, target_sig);
603e4fd7 450
edf8e2af 451 /* dump core if supported by target binary format */
66393fb9 452 if (core_dump_signal(target_sig) && (ts->bprm->core_dump != NULL)) {
edf8e2af
MW		 453 stop_all_tasks();
454 core_dumped =
a2247f8e 455 ((*ts->bprm->core_dump)(target_sig, env) == 0);
edf8e2af
MW		 456 }
457 if (core_dumped) {
458 /* we already dumped the core of target process, we don't want
459 * a coredump of qemu itself */
460 struct rlimit nodump;
461 getrlimit(RLIMIT_CORE, &nodump);
462 nodump.rlim_cur=0;
463 setrlimit(RLIMIT_CORE, &nodump);
464 (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n",
66393fb9 465 target_sig, strsignal(host_sig), "core dumped" );
edf8e2af
MW		 466 }
467
0c58751c 468 /* The proper exit code for dying from an uncaught signal is
603e4fd7
AJ		 469 * -<signal>. The kernel doesn't allow exit() or _exit() to pass
470 * a negative value. To get the proper exit code we need to
471 * actually die from an uncaught signal. Here the default signal
472 * handler is installed, we send ourself a signal and we wait for
473 * it to arrive. */
474 sigfillset(&act.sa_mask);
475 act.sa_handler = SIG_DFL;
3a5d30bf 476 act.sa_flags = 0;
603e4fd7
AJ		 477 sigaction(host_sig, &act, NULL);
478
479 /* For some reason raise(host_sig) doesn't send the signal when
480 * statically linked on x86-64. */
481 kill(getpid(), host_sig);
482
483 /* Make sure the signal isn't masked (just reuse the mask inside
484 of act) */
485 sigdelset(&act.sa_mask, host_sig);
486 sigsuspend(&act.sa_mask);
487
488 /* unreachable */
a6c6f76c 489 abort();
66fb9763
FB		 490}
491
9de5e440
FB		 492/* queue a signal so that it will be send to the virtual CPU as soon
493 as possible */
9349b4f9 494int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info)
31e31b8a 495{
0429a971
AF		 496 CPUState *cpu = ENV_GET_CPU(env);
497 TaskState *ts = cpu->opaque;
624f7979 498 struct emulated_sigtable *k;
9de5e440 499 struct sigqueue *q, **pq;
992f48a0 500 abi_ulong handler;
ca587a8e 501 int queue;
66fb9763 502
c8ee0a44 503 trace_user_queue_signal(env, sig);
624f7979 504 k = &ts->sigtab[sig - 1];
ca587a8e 505 queue = gdb_queuesig ();
624f7979 506 handler = sigact_table[sig - 1]._sa_handler;
a7ec0f98
PM		 507
508 if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) {
509 /* Guest has blocked SIGSEGV but we got one anyway. Assume this
510 * is a forced SIGSEGV (ie one the kernel handles via force_sig_info
511 * because it got a real MMU fault). A blocked SIGSEGV in that
512 * situation is treated as if using the default handler. This is
513 * not correct if some other process has randomly sent us a SIGSEGV
514 * via kill(), but that is not easy to distinguish at this point,
515 * so we assume it doesn't happen.
516 */
517 handler = TARGET_SIG_DFL;
518 }
519
ca587a8e 520 if (!queue && handler == TARGET_SIG_DFL) {
60b19691
TS		 521 if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
522 kill(getpid(),SIGSTOP);
523 return 0;
524 } else
66fb9763 525 /* default handler : ignore some signal. The other are fatal */
5fafdf24
TS		 526 if (sig != TARGET_SIGCHLD &&
527 sig != TARGET_SIGURG &&
60b19691
TS		 528 sig != TARGET_SIGWINCH &&
529 sig != TARGET_SIGCONT) {
66fb9763 530 force_sig(sig);
9de5e440
FB		 531 } else {
532 return 0; /* indicate ignored */
66fb9763 533 }
ca587a8e 534 } else if (!queue && handler == TARGET_SIG_IGN) {
66fb9763 535 /* ignore signal */
9de5e440 536 return 0;
ca587a8e 537 } else if (!queue && handler == TARGET_SIG_ERR) {
66fb9763
FB		 538 force_sig(sig);
539 } else {
9de5e440
FB		 540 pq = &k->first;
541 if (sig < TARGET_SIGRTMIN) {
542 /* if non real time signal, we queue exactly one signal */
543 if (!k->pending)
544 q = &k->info;
545 else
546 return 0;
547 } else {
548 if (!k->pending) {
549 /* first signal */
550 q = &k->info;
551 } else {
624f7979 552 q = alloc_sigqueue(env);
9de5e440
FB		 553 if (!q)
554 return -EAGAIN;
555 while (*pq != NULL)
556 pq = &(*pq)->next;
557 }
558 }
559 *pq = q;
560 q->info = *info;
561 q->next = NULL;
562 k->pending = 1;
563 /* signal that a new signal is pending */
624f7979 564 ts->signal_pending = 1;
9de5e440
FB		 565 return 1; /* indicates that the signal was queued */
566 }
567}
568
5fafdf24 569static void host_signal_handler(int host_signum, siginfo_t *info,
9de5e440
FB		 570 void *puc)
571{
a2247f8e 572 CPUArchState *env = thread_cpu->env_ptr;
9de5e440 573 int sig;
c227f099 574 target_siginfo_t tinfo;
9de5e440
FB		 575
576 /* the CPU emulator uses some host signals to detect exceptions,
eaa449b9 577 we forward to it some signals */
ca587a8e 578 if ((host_signum == SIGSEGV || host_signum == SIGBUS)
eaa449b9 579 && info->si_code > 0) {
b346ff46 580 if (cpu_signal_handler(host_signum, info, puc))
9de5e440
FB		 581 return;
582 }
583
584 /* get target signal number */
585 sig = host_to_target_signal(host_signum);
586 if (sig < 1 || sig > TARGET_NSIG)
587 return;
c8ee0a44 588 trace_user_host_signal(env, host_signum, sig);
9de5e440 589 host_to_target_siginfo_noswap(&tinfo, info);
a2247f8e 590 if (queue_signal(env, sig, &tinfo) == 1) {
9de5e440 591 /* interrupt the virtual CPU as soon as possible */
a2247f8e 592 cpu_exit(thread_cpu);
66fb9763
FB		 593 }
594}
595
0da46a6e 596/* do_sigaltstack() returns target values and errnos. */
579a97f7
FB		 597/* compare linux/kernel/signal.c:do_sigaltstack() */
598abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp)
a04e134a
TS		 599{
600 int ret;
601 struct target_sigaltstack oss;
602
603 /* XXX: test errors */
579a97f7 604 if(uoss_addr)
a04e134a
TS		 605 {
606 __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp);
607 __put_user(target_sigaltstack_used.ss_size, &oss.ss_size);
608 __put_user(sas_ss_flags(sp), &oss.ss_flags);
609 }
610
579a97f7 611 if(uss_addr)
a04e134a 612 {
579a97f7
FB		 613 struct target_sigaltstack *uss;
614 struct target_sigaltstack ss;
0903c8be
TM		 615 size_t minstacksize = TARGET_MINSIGSTKSZ;
616
617#if defined(TARGET_PPC64)
618 /* ELF V2 for PPC64 has a 4K minimum stack size for signal handlers */
619 struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
620 if (get_ppc64_abi(image) > 1) {
621 minstacksize = 4096;
622 }
623#endif
a04e134a 624
0da46a6e 625 ret = -TARGET_EFAULT;
9eeb8306 626 if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1)) {
a04e134a 627 goto out;
9eeb8306
RV		 628 }
629 __get_user(ss.ss_sp, &uss->ss_sp);
630 __get_user(ss.ss_size, &uss->ss_size);
631 __get_user(ss.ss_flags, &uss->ss_flags);
579a97f7 632 unlock_user_struct(uss, uss_addr, 0);
a04e134a 633
0da46a6e 634 ret = -TARGET_EPERM;
a04e134a
TS		 635 if (on_sig_stack(sp))
636 goto out;
637
0da46a6e 638 ret = -TARGET_EINVAL;
a04e134a
TS		 639 if (ss.ss_flags != TARGET_SS_DISABLE
640 && ss.ss_flags != TARGET_SS_ONSTACK
641 && ss.ss_flags != 0)
642 goto out;
643
644 if (ss.ss_flags == TARGET_SS_DISABLE) {
645 ss.ss_size = 0;
646 ss.ss_sp = 0;
647 } else {
0da46a6e 648 ret = -TARGET_ENOMEM;
0903c8be 649 if (ss.ss_size < minstacksize) {
a04e134a 650 goto out;
0903c8be 651 }
a04e134a
TS		 652 }
653
654 target_sigaltstack_used.ss_sp = ss.ss_sp;
655 target_sigaltstack_used.ss_size = ss.ss_size;
656 }
657
579a97f7 658 if (uoss_addr) {
0da46a6e 659 ret = -TARGET_EFAULT;
579a97f7 660 if (copy_to_user(uoss_addr, &oss, sizeof(oss)))
a04e134a 661 goto out;
a04e134a
TS		 662 }
663
664 ret = 0;
665out:
666 return ret;
667}
668
0da46a6e 669/* do_sigaction() return host values and errnos */
66fb9763
FB		 670int do_sigaction(int sig, const struct target_sigaction *act,
671 struct target_sigaction *oact)
672{
624f7979 673 struct target_sigaction *k;
773b93ee
FB		 674 struct sigaction act1;
675 int host_sig;
0da46a6e 676 int ret = 0;
66fb9763 677
2a913eb1 678 if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP)
66fb9763
FB		 679 return -EINVAL;
680 k = &sigact_table[sig - 1];
66fb9763 681 if (oact) {
d2565875
RH		 682 __put_user(k->_sa_handler, &oact->_sa_handler);
683 __put_user(k->sa_flags, &oact->sa_flags);
388bb21a 684#if !defined(TARGET_MIPS)
d2565875 685 __put_user(k->sa_restorer, &oact->sa_restorer);
388bb21a 686#endif
d2565875 687 /* Not swapped. */
624f7979 688 oact->sa_mask = k->sa_mask;
66fb9763
FB		 689 }
690 if (act) {
624f7979 691 /* FIXME: This is not threadsafe. */
d2565875
RH		 692 __get_user(k->_sa_handler, &act->_sa_handler);
693 __get_user(k->sa_flags, &act->sa_flags);
388bb21a 694#if !defined(TARGET_MIPS)
d2565875 695 __get_user(k->sa_restorer, &act->sa_restorer);
388bb21a 696#endif
d2565875 697 /* To be swapped in target_to_host_sigset. */
624f7979 698 k->sa_mask = act->sa_mask;
773b93ee
FB		 699
700 /* we update the host linux signal state */
701 host_sig = target_to_host_signal(sig);
702 if (host_sig != SIGSEGV && host_sig != SIGBUS) {
703 sigfillset(&act1.sa_mask);
704 act1.sa_flags = SA_SIGINFO;
624f7979 705 if (k->sa_flags & TARGET_SA_RESTART)
773b93ee
FB		 706 act1.sa_flags |= SA_RESTART;
707 /* NOTE: it is important to update the host kernel signal
708 ignore state to avoid getting unexpected interrupted
709 syscalls */
624f7979 710 if (k->_sa_handler == TARGET_SIG_IGN) {
773b93ee 711 act1.sa_sigaction = (void *)SIG_IGN;
624f7979 712 } else if (k->_sa_handler == TARGET_SIG_DFL) {
ca587a8e
AJ		 713 if (fatal_signal (sig))
714 act1.sa_sigaction = host_signal_handler;
715 else
716 act1.sa_sigaction = (void *)SIG_DFL;
773b93ee
FB		 717 } else {
718 act1.sa_sigaction = host_signal_handler;
719 }
0da46a6e 720 ret = sigaction(host_sig, &act1, NULL);
773b93ee 721 }
66fb9763 722 }
0da46a6e 723 return ret;
66fb9763
FB		 724}
725
459a4017 726#if defined(TARGET_I386) && TARGET_ABI_BITS == 32
66fb9763
FB		 727
728/* from the Linux kernel */
729
730struct target_fpreg {
731 uint16_t significand[4];
732 uint16_t exponent;
733};
734
735struct target_fpxreg {
736 uint16_t significand[4];
737 uint16_t exponent;
738 uint16_t padding[3];
739};
740
741struct target_xmmreg {
992f48a0 742 abi_ulong element[4];
66fb9763
FB		 743};
744
745struct target_fpstate {
746 /* Regular FPU environment */
992f48a0
BS		 747 abi_ulong cw;
748 abi_ulong sw;
749 abi_ulong tag;
750 abi_ulong ipoff;
751 abi_ulong cssel;
752 abi_ulong dataoff;
753 abi_ulong datasel;
66fb9763
FB		 754 struct target_fpreg _st[8];
755 uint16_t status;
756 uint16_t magic; /* 0xffff = regular FPU data only */
757
758 /* FXSR FPU environment */
992f48a0
BS		 759 abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */
760 abi_ulong mxcsr;
761 abi_ulong reserved;
66fb9763
FB		 762 struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */
763 struct target_xmmreg _xmm[8];
992f48a0 764 abi_ulong padding[56];
66fb9763
FB		 765};
766
767#define X86_FXSR_MAGIC 0x0000
768
769struct target_sigcontext {
770 uint16_t gs, __gsh;
771 uint16_t fs, __fsh;
772 uint16_t es, __esh;
773 uint16_t ds, __dsh;
992f48a0
BS		 774 abi_ulong edi;
775 abi_ulong esi;
776 abi_ulong ebp;
777 abi_ulong esp;
778 abi_ulong ebx;
779 abi_ulong edx;
780 abi_ulong ecx;
781 abi_ulong eax;
782 abi_ulong trapno;
783 abi_ulong err;
784 abi_ulong eip;
66fb9763 785 uint16_t cs, __csh;
992f48a0
BS		 786 abi_ulong eflags;
787 abi_ulong esp_at_signal;
66fb9763 788 uint16_t ss, __ssh;
992f48a0
BS		 789 abi_ulong fpstate; /* pointer */
790 abi_ulong oldmask;
791 abi_ulong cr2;
66fb9763
FB		 792};
793
66fb9763 794struct target_ucontext {
992f48a0
BS		 795 abi_ulong tuc_flags;
796 abi_ulong tuc_link;
c227f099 797 target_stack_t tuc_stack;
b8076a74 798 struct target_sigcontext tuc_mcontext;
c227f099 799 target_sigset_t tuc_sigmask; /* mask last for extensibility */
66fb9763
FB		 800};
801
802struct sigframe
803{
992f48a0 804 abi_ulong pretcode;
66fb9763
FB		 805 int sig;
806 struct target_sigcontext sc;
807 struct target_fpstate fpstate;
992f48a0 808 abi_ulong extramask[TARGET_NSIG_WORDS-1];
66fb9763
FB		 809 char retcode[8];
810};
811
812struct rt_sigframe
813{
992f48a0 814 abi_ulong pretcode;
66fb9763 815 int sig;
992f48a0
BS		 816 abi_ulong pinfo;
817 abi_ulong puc;
66fb9763
FB		 818 struct target_siginfo info;
819 struct target_ucontext uc;
820 struct target_fpstate fpstate;
821 char retcode[8];
822};
823
824/*
825 * Set up a signal frame.
826 */
827
66fb9763 828/* XXX: save x87 state */
41ecc72b
RV		 829static void setup_sigcontext(struct target_sigcontext *sc,
830 struct target_fpstate *fpstate, CPUX86State *env, abi_ulong mask,
831 abi_ulong fpstate_addr)
66fb9763 832{
27103424 833 CPUState *cs = CPU(x86_env_get_cpu(env));
27103424 834 uint16_t magic;
66fb9763 835
579a97f7 836 /* already locked in setup_frame() */
1d8b512b
RV		 837 __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs);
838 __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs);
839 __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es);
840 __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds);
841 __put_user(env->regs[R_EDI], &sc->edi);
842 __put_user(env->regs[R_ESI], &sc->esi);
843 __put_user(env->regs[R_EBP], &sc->ebp);
844 __put_user(env->regs[R_ESP], &sc->esp);
845 __put_user(env->regs[R_EBX], &sc->ebx);
846 __put_user(env->regs[R_EDX], &sc->edx);
847 __put_user(env->regs[R_ECX], &sc->ecx);
848 __put_user(env->regs[R_EAX], &sc->eax);
849 __put_user(cs->exception_index, &sc->trapno);
850 __put_user(env->error_code, &sc->err);
851 __put_user(env->eip, &sc->eip);
852 __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs);
853 __put_user(env->eflags, &sc->eflags);
854 __put_user(env->regs[R_ESP], &sc->esp_at_signal);
855 __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss);
ed2dcdf6 856
28be6234 857 cpu_x86_fsave(env, fpstate_addr, 1);
ed2dcdf6 858 fpstate->status = fpstate->sw;
775b58d8 859 magic = 0xffff;
1d8b512b
RV		 860 __put_user(magic, &fpstate->magic);
861 __put_user(fpstate_addr, &sc->fpstate);
ed2dcdf6 862
66fb9763 863 /* non-iBCS2 extensions.. */
1d8b512b
RV		 864 __put_user(mask, &sc->oldmask);
865 __put_user(env->cr[2], &sc->cr2);
31e31b8a
FB		 866}
867
66fb9763
FB		 868/*
869 * Determine which stack to use..
870 */
31e31b8a 871
579a97f7 872static inline abi_ulong
624f7979 873get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size)
31e31b8a 874{
66fb9763
FB		 875 unsigned long esp;
876
877 /* Default to using normal stack */
878 esp = env->regs[R_ESP];
66fb9763 879 /* This is the X/Open sanctioned signal stack switching. */
624f7979 880 if (ka->sa_flags & TARGET_SA_ONSTACK) {
a04e134a
TS		 881 if (sas_ss_flags(esp) == 0)
882 esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
883 }
66fb9763
FB		 884
885 /* This is the legacy signal stack switching. */
5fafdf24 886 else
a52c757c 887 if ((env->segs[R_SS].selector & 0xffff) != __USER_DS &&
624f7979
PB		 888 !(ka->sa_flags & TARGET_SA_RESTORER) &&
889 ka->sa_restorer) {
890 esp = (unsigned long) ka->sa_restorer;
a52c757c 891 }
579a97f7 892 return (esp - frame_size) & -8ul;
66fb9763
FB		 893}
894
579a97f7 895/* compare linux/arch/i386/kernel/signal.c:setup_frame() */
624f7979 896static void setup_frame(int sig, struct target_sigaction *ka,
c227f099 897 target_sigset_t *set, CPUX86State *env)
66fb9763 898{
579a97f7 899 abi_ulong frame_addr;
66fb9763 900 struct sigframe *frame;
7df2fa36 901 int i;
66fb9763 902
579a97f7 903 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 904 trace_user_setup_frame(env, frame_addr);
66fb9763 905
579a97f7 906 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
66fb9763 907 goto give_sigsegv;
579a97f7 908
b6e2c935 909 __put_user(sig, &frame->sig);
66fb9763 910
28be6234
FB		 911 setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
912 frame_addr + offsetof(struct sigframe, fpstate));
66fb9763 913
7df2fa36
RV		 914 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
915 __put_user(set->sig[i], &frame->extramask[i - 1]);
916 }
66fb9763
FB		 917
918 /* Set up to return from userspace. If provided, use a stub
919 already in userspace. */
624f7979 920 if (ka->sa_flags & TARGET_SA_RESTORER) {
1d8b512b 921 __put_user(ka->sa_restorer, &frame->pretcode);
66fb9763 922 } else {
775b58d8 923 uint16_t val16;
28be6234
FB		 924 abi_ulong retcode_addr;
925 retcode_addr = frame_addr + offsetof(struct sigframe, retcode);
1d8b512b 926 __put_user(retcode_addr, &frame->pretcode);
66fb9763 927 /* This is popl %eax ; movl $,%eax ; int $0x80 */
775b58d8 928 val16 = 0xb858;
1d8b512b
RV		 929 __put_user(val16, (uint16_t *)(frame->retcode+0));
930 __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2));
775b58d8 931 val16 = 0x80cd;
1d8b512b 932 __put_user(val16, (uint16_t *)(frame->retcode+6));
66fb9763
FB		 933 }
934
66fb9763
FB		 935
936 /* Set up registers for signal handler */
28be6234 937 env->regs[R_ESP] = frame_addr;
624f7979 938 env->eip = ka->_sa_handler;
66fb9763
FB		 939
940 cpu_x86_load_seg(env, R_DS, __USER_DS);
941 cpu_x86_load_seg(env, R_ES, __USER_DS);
942 cpu_x86_load_seg(env, R_SS, __USER_DS);
943 cpu_x86_load_seg(env, R_CS, __USER_CS);
944 env->eflags &= ~TF_MASK;
945
579a97f7
FB		 946 unlock_user_struct(frame, frame_addr, 1);
947
66fb9763
FB		 948 return;
949
950give_sigsegv:
951 if (sig == TARGET_SIGSEGV)
624f7979 952 ka->_sa_handler = TARGET_SIG_DFL;
66fb9763
FB		 953 force_sig(TARGET_SIGSEGV /* , current */);
954}
955
579a97f7 956/* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */
624f7979 957static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099
AL		 958 target_siginfo_t *info,
959 target_sigset_t *set, CPUX86State *env)
66fb9763 960{
28be6234 961 abi_ulong frame_addr, addr;
66fb9763 962 struct rt_sigframe *frame;
0188fadb 963 int i;
66fb9763 964
579a97f7 965 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 966 trace_user_setup_rt_frame(env, frame_addr);
66fb9763 967
579a97f7 968 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
66fb9763 969 goto give_sigsegv;
66fb9763 970
b6e2c935 971 __put_user(sig, &frame->sig);
28be6234 972 addr = frame_addr + offsetof(struct rt_sigframe, info);
1d8b512b 973 __put_user(addr, &frame->pinfo);
28be6234 974 addr = frame_addr + offsetof(struct rt_sigframe, uc);
1d8b512b 975 __put_user(addr, &frame->puc);
f6c7a05b 976 tswap_siginfo(&frame->info, info);
31e31b8a 977
66fb9763 978 /* Create the ucontext. */
1d8b512b
RV		 979 __put_user(0, &frame->uc.tuc_flags);
980 __put_user(0, &frame->uc.tuc_link);
981 __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
982 __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
983 &frame->uc.tuc_stack.ss_flags);
984 __put_user(target_sigaltstack_used.ss_size,
985 &frame->uc.tuc_stack.ss_size);
41ecc72b
RV		 986 setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, env,
987 set->sig[0], frame_addr + offsetof(struct rt_sigframe, fpstate));
988
0188fadb
RV		 989 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
990 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
991 }
31e31b8a 992
66fb9763
FB		 993 /* Set up to return from userspace. If provided, use a stub
994 already in userspace. */
624f7979 995 if (ka->sa_flags & TARGET_SA_RESTORER) {
1d8b512b 996 __put_user(ka->sa_restorer, &frame->pretcode);
66fb9763 997 } else {
775b58d8 998 uint16_t val16;
28be6234 999 addr = frame_addr + offsetof(struct rt_sigframe, retcode);
1d8b512b 1000 __put_user(addr, &frame->pretcode);
66fb9763 1001 /* This is movl $,%eax ; int $0x80 */
1d8b512b
RV		 1002 __put_user(0xb8, (char *)(frame->retcode+0));
1003 __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1));
775b58d8 1004 val16 = 0x80cd;
1d8b512b 1005 __put_user(val16, (uint16_t *)(frame->retcode+5));
66fb9763
FB		 1006 }
1007
66fb9763 1008 /* Set up registers for signal handler */
28be6234 1009 env->regs[R_ESP] = frame_addr;
624f7979 1010 env->eip = ka->_sa_handler;
66fb9763
FB		 1011
1012 cpu_x86_load_seg(env, R_DS, __USER_DS);
1013 cpu_x86_load_seg(env, R_ES, __USER_DS);
1014 cpu_x86_load_seg(env, R_SS, __USER_DS);
1015 cpu_x86_load_seg(env, R_CS, __USER_CS);
1016 env->eflags &= ~TF_MASK;
1017
579a97f7
FB		 1018 unlock_user_struct(frame, frame_addr, 1);
1019
66fb9763
FB		 1020 return;
1021
1022give_sigsegv:
1023 if (sig == TARGET_SIGSEGV)
624f7979 1024 ka->_sa_handler = TARGET_SIG_DFL;
66fb9763
FB		 1025 force_sig(TARGET_SIGSEGV /* , current */);
1026}
1027
1028static int
1029restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax)
1030{
1031 unsigned int err = 0;
28be6234
FB		 1032 abi_ulong fpstate_addr;
1033 unsigned int tmpflags;
1034
1035 cpu_x86_load_seg(env, R_GS, tswap16(sc->gs));
1036 cpu_x86_load_seg(env, R_FS, tswap16(sc->fs));
1037 cpu_x86_load_seg(env, R_ES, tswap16(sc->es));
1038 cpu_x86_load_seg(env, R_DS, tswap16(sc->ds));
1039
1040 env->regs[R_EDI] = tswapl(sc->edi);
1041 env->regs[R_ESI] = tswapl(sc->esi);
1042 env->regs[R_EBP] = tswapl(sc->ebp);
1043 env->regs[R_ESP] = tswapl(sc->esp);
1044 env->regs[R_EBX] = tswapl(sc->ebx);
1045 env->regs[R_EDX] = tswapl(sc->edx);
1046 env->regs[R_ECX] = tswapl(sc->ecx);
1047 env->eip = tswapl(sc->eip);
66fb9763 1048
9a826d78
MM		 1049 cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3);
1050 cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3);
5fafdf24 1051
28be6234
FB		 1052 tmpflags = tswapl(sc->eflags);
1053 env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
1054 // regs->orig_eax = -1; /* disable syscall checks */
66fb9763 1055
28be6234
FB		 1056 fpstate_addr = tswapl(sc->fpstate);
1057 if (fpstate_addr != 0) {
1058 if (!access_ok(VERIFY_READ, fpstate_addr,
1059 sizeof(struct target_fpstate)))
1060 goto badframe;
1061 cpu_x86_frstor(env, fpstate_addr, 1);
66fb9763 1062 }
ed2dcdf6 1063
28be6234 1064 *peax = tswapl(sc->eax);
66fb9763 1065 return err;
66fb9763
FB		 1066badframe:
1067 return 1;
66fb9763
FB		 1068}
1069
1070long do_sigreturn(CPUX86State *env)
1071{
579a97f7
FB		 1072 struct sigframe *frame;
1073 abi_ulong frame_addr = env->regs[R_ESP] - 8;
c227f099 1074 target_sigset_t target_set;
66fb9763
FB		 1075 sigset_t set;
1076 int eax, i;
1077
c8ee0a44 1078 trace_user_do_sigreturn(env, frame_addr);
579a97f7
FB		 1079 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1080 goto badframe;
66fb9763 1081 /* set blocked signals */
f5f601af 1082 __get_user(target_set.sig[0], &frame->sc.oldmask);
9231944d 1083 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
f5f601af 1084 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
9231944d 1085 }
66fb9763 1086
9231944d 1087 target_to_host_sigset_internal(&set, &target_set);
1c275925 1088 do_sigprocmask(SIG_SETMASK, &set, NULL);
3b46e624 1089
66fb9763
FB		 1090 /* restore registers */
1091 if (restore_sigcontext(env, &frame->sc, &eax))
1092 goto badframe;
579a97f7 1093 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1094 return eax;
1095
1096badframe:
579a97f7 1097 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1098 force_sig(TARGET_SIGSEGV);
1099 return 0;
1100}
1101
1102long do_rt_sigreturn(CPUX86State *env)
1103{
28be6234
FB		 1104 abi_ulong frame_addr;
1105 struct rt_sigframe *frame;
66fb9763 1106 sigset_t set;
66fb9763
FB		 1107 int eax;
1108
28be6234 1109 frame_addr = env->regs[R_ESP] - 4;
c8ee0a44 1110 trace_user_do_rt_sigreturn(env, frame_addr);
28be6234
FB		 1111 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1112 goto badframe;
b8076a74 1113 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
1c275925 1114 do_sigprocmask(SIG_SETMASK, &set, NULL);
5fafdf24 1115
b8076a74 1116 if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax))
66fb9763
FB		 1117 goto badframe;
1118
28be6234
FB		 1119 if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0,
1120 get_sp_from_cpustate(env)) == -EFAULT)
66fb9763 1121 goto badframe;
a04e134a 1122
28be6234 1123 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1124 return eax;
1125
1126badframe:
28be6234
FB		 1127 unlock_user_struct(frame, frame_addr, 0);
1128 force_sig(TARGET_SIGSEGV);
66fb9763
FB		 1129 return 0;
1130}
1131
1744aea1
AS		 1132#elif defined(TARGET_AARCH64)
1133
1134struct target_sigcontext {
1135 uint64_t fault_address;
1136 /* AArch64 registers */
1137 uint64_t regs[31];
1138 uint64_t sp;
1139 uint64_t pc;
1140 uint64_t pstate;
1141 /* 4K reserved for FP/SIMD state and future expansion */
1142 char __reserved[4096] __attribute__((__aligned__(16)));
1143};
1144
1145struct target_ucontext {
1146 abi_ulong tuc_flags;
1147 abi_ulong tuc_link;
1148 target_stack_t tuc_stack;
1149 target_sigset_t tuc_sigmask;
1150 /* glibc uses a 1024-bit sigset_t */
1151 char __unused[1024 / 8 - sizeof(target_sigset_t)];
1152 /* last for future expansion */
1153 struct target_sigcontext tuc_mcontext;
1154};
1155
1156/*
1157 * Header to be used at the beginning of structures extending the user
1158 * context. Such structures must be placed after the rt_sigframe on the stack
1159 * and be 16-byte aligned. The last structure must be a dummy one with the
1160 * magic and size set to 0.
1161 */
1162struct target_aarch64_ctx {
1163 uint32_t magic;
1164 uint32_t size;
1165};
1166
1167#define TARGET_FPSIMD_MAGIC 0x46508001
1168
1169struct target_fpsimd_context {
1170 struct target_aarch64_ctx head;
1171 uint32_t fpsr;
1172 uint32_t fpcr;
1173 uint64_t vregs[32 * 2]; /* really uint128_t vregs[32] */
1174};
1175
1176/*
1177 * Auxiliary context saved in the sigcontext.__reserved array. Not exported to
1178 * user space as it will change with the addition of new context. User space
1179 * should check the magic/size information.
1180 */
1181struct target_aux_context {
1182 struct target_fpsimd_context fpsimd;
1183 /* additional context to be added before "end" */
1184 struct target_aarch64_ctx end;
1185};
1186
1187struct target_rt_sigframe {
1188 struct target_siginfo info;
1189 struct target_ucontext uc;
1190 uint64_t fp;
1191 uint64_t lr;
1192 uint32_t tramp[2];
1193};
1194
1195static int target_setup_sigframe(struct target_rt_sigframe *sf,
1196 CPUARMState *env, target_sigset_t *set)
1197{
1198 int i;
1199 struct target_aux_context *aux =
1200 (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved;
1201
1202 /* set up the stack frame for unwinding */
1203 __put_user(env->xregs[29], &sf->fp);
1204 __put_user(env->xregs[30], &sf->lr);
1205
1206 for (i = 0; i < 31; i++) {
1207 __put_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
1208 }
1209 __put_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
1210 __put_user(env->pc, &sf->uc.tuc_mcontext.pc);
d356312f 1211 __put_user(pstate_read(env), &sf->uc.tuc_mcontext.pstate);
1744aea1 1212
7af03928 1213 __put_user(env->exception.vaddress, &sf->uc.tuc_mcontext.fault_address);
1744aea1
AS		 1214
1215 for (i = 0; i < TARGET_NSIG_WORDS; i++) {
1216 __put_user(set->sig[i], &sf->uc.tuc_sigmask.sig[i]);
1217 }
1218
1219 for (i = 0; i < 32; i++) {
1220#ifdef TARGET_WORDS_BIGENDIAN
1221 __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]);
1222 __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]);
1223#else
1224 __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]);
1225 __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]);
1226#endif
1227 }
e0ee138b
WN		 1228 __put_user(vfp_get_fpsr(env), &aux->fpsimd.fpsr);
1229 __put_user(vfp_get_fpcr(env), &aux->fpsimd.fpcr);
1744aea1
AS		 1230 __put_user(TARGET_FPSIMD_MAGIC, &aux->fpsimd.head.magic);
1231 __put_user(sizeof(struct target_fpsimd_context),
1232 &aux->fpsimd.head.size);
1233
1234 /* set the "end" magic */
1235 __put_user(0, &aux->end.magic);
1236 __put_user(0, &aux->end.size);
1237
1238 return 0;
1239}
1240
1241static int target_restore_sigframe(CPUARMState *env,
1242 struct target_rt_sigframe *sf)
1243{
1244 sigset_t set;
1245 int i;
1246 struct target_aux_context *aux =
1247 (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved;
e0ee138b 1248 uint32_t magic, size, fpsr, fpcr;
d356312f 1249 uint64_t pstate;
1744aea1
AS		 1250
1251 target_to_host_sigset(&set, &sf->uc.tuc_sigmask);
1c275925 1252 do_sigprocmask(SIG_SETMASK, &set, NULL);
1744aea1
AS		 1253
1254 for (i = 0; i < 31; i++) {
1255 __get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
1256 }
1257
1258 __get_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
1259 __get_user(env->pc, &sf->uc.tuc_mcontext.pc);
d356312f
PM		 1260 __get_user(pstate, &sf->uc.tuc_mcontext.pstate);
1261 pstate_write(env, pstate);
1744aea1
AS		 1262
1263 __get_user(magic, &aux->fpsimd.head.magic);
1264 __get_user(size, &aux->fpsimd.head.size);
1265
1266 if (magic != TARGET_FPSIMD_MAGIC
1267 || size != sizeof(struct target_fpsimd_context)) {
1268 return 1;
1269 }
1270
4cf23480
PM		 1271 for (i = 0; i < 32; i++) {
1272#ifdef TARGET_WORDS_BIGENDIAN
1273 __get_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]);
1274 __get_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]);
1275#else
1276 __get_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]);
1277 __get_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]);
1278#endif
1744aea1 1279 }
e0ee138b
WN		 1280 __get_user(fpsr, &aux->fpsimd.fpsr);
1281 vfp_set_fpsr(env, fpsr);
1282 __get_user(fpcr, &aux->fpsimd.fpcr);
1283 vfp_set_fpcr(env, fpcr);
1744aea1
AS		 1284
1285 return 0;
1286}
1287
1288static abi_ulong get_sigframe(struct target_sigaction *ka, CPUARMState *env)
1289{
1290 abi_ulong sp;
1291
1292 sp = env->xregs[31];
1293
1294 /*
1295 * This is the X/Open sanctioned signal stack switching.
1296 */
b545f63f 1297 if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) {
1744aea1
AS		 1298 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
1299 }
1300
1301 sp = (sp - sizeof(struct target_rt_sigframe)) & ~15;
1302
1303 return sp;
1304}
1305
1306static void target_setup_frame(int usig, struct target_sigaction *ka,
1307 target_siginfo_t *info, target_sigset_t *set,
1308 CPUARMState *env)
1309{
1310 struct target_rt_sigframe *frame;
8a3ae910 1311 abi_ulong frame_addr, return_addr;
1744aea1
AS		 1312
1313 frame_addr = get_sigframe(ka, env);
c8ee0a44 1314 trace_user_setup_frame(env, frame_addr);
1744aea1
AS		 1315 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
1316 goto give_sigsegv;
1317 }
1318
1319 __put_user(0, &frame->uc.tuc_flags);
1320 __put_user(0, &frame->uc.tuc_link);
1321
1322 __put_user(target_sigaltstack_used.ss_sp,
1323 &frame->uc.tuc_stack.ss_sp);
1324 __put_user(sas_ss_flags(env->xregs[31]),
1325 &frame->uc.tuc_stack.ss_flags);
1326 __put_user(target_sigaltstack_used.ss_size,
1327 &frame->uc.tuc_stack.ss_size);
1328 target_setup_sigframe(frame, env, set);
8a3ae910
MM		 1329 if (ka->sa_flags & TARGET_SA_RESTORER) {
1330 return_addr = ka->sa_restorer;
1331 } else {
1332 /* mov x8,#__NR_rt_sigreturn; svc #0 */
1333 __put_user(0xd2801168, &frame->tramp[0]);
1334 __put_user(0xd4000001, &frame->tramp[1]);
1335 return_addr = frame_addr + offsetof(struct target_rt_sigframe, tramp);
1336 }
1744aea1
AS		 1337 env->xregs[0] = usig;
1338 env->xregs[31] = frame_addr;
1339 env->xregs[29] = env->xregs[31] + offsetof(struct target_rt_sigframe, fp);
1340 env->pc = ka->_sa_handler;
8a3ae910 1341 env->xregs[30] = return_addr;
1744aea1 1342 if (info) {
f6c7a05b 1343 tswap_siginfo(&frame->info, info);
1744aea1
AS		 1344 env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info);
1345 env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
1346 }
1347
1348 unlock_user_struct(frame, frame_addr, 1);
1349 return;
1350
1351 give_sigsegv:
1352 unlock_user_struct(frame, frame_addr, 1);
1353 force_sig(TARGET_SIGSEGV);
1354}
1355
1356static void setup_rt_frame(int sig, struct target_sigaction *ka,
1357 target_siginfo_t *info, target_sigset_t *set,
1358 CPUARMState *env)
1359{
1360 target_setup_frame(sig, ka, info, set, env);
1361}
1362
1363static void setup_frame(int sig, struct target_sigaction *ka,
1364 target_sigset_t *set, CPUARMState *env)
1365{
1366 target_setup_frame(sig, ka, 0, set, env);
1367}
1368
1369long do_rt_sigreturn(CPUARMState *env)
1370{
7f72cd23 1371 struct target_rt_sigframe *frame = NULL;
1744aea1
AS		 1372 abi_ulong frame_addr = env->xregs[31];
1373
c8ee0a44 1374 trace_user_do_rt_sigreturn(env, frame_addr);
1744aea1
AS		 1375 if (frame_addr & 15) {
1376 goto badframe;
1377 }
1378
1379 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
1380 goto badframe;
1381 }
1382
1383 if (target_restore_sigframe(env, frame)) {
1384 goto badframe;
1385 }
1386
1387 if (do_sigaltstack(frame_addr +
1388 offsetof(struct target_rt_sigframe, uc.tuc_stack),
1389 0, get_sp_from_cpustate(env)) == -EFAULT) {
1390 goto badframe;
1391 }
1392
1393 unlock_user_struct(frame, frame_addr, 0);
1394 return env->xregs[0];
1395
1396 badframe:
1397 unlock_user_struct(frame, frame_addr, 0);
1398 force_sig(TARGET_SIGSEGV);
1399 return 0;
1400}
1401
1402long do_sigreturn(CPUARMState *env)
1403{
1404 return do_rt_sigreturn(env);
1405}
1406
43fff238
FB		 1407#elif defined(TARGET_ARM)
1408
1409struct target_sigcontext {
992f48a0
BS		 1410 abi_ulong trap_no;
1411 abi_ulong error_code;
1412 abi_ulong oldmask;
1413 abi_ulong arm_r0;
1414 abi_ulong arm_r1;
1415 abi_ulong arm_r2;
1416 abi_ulong arm_r3;
1417 abi_ulong arm_r4;
1418 abi_ulong arm_r5;
1419 abi_ulong arm_r6;
1420 abi_ulong arm_r7;
1421 abi_ulong arm_r8;
1422 abi_ulong arm_r9;
1423 abi_ulong arm_r10;
1424 abi_ulong arm_fp;
1425 abi_ulong arm_ip;
1426 abi_ulong arm_sp;
1427 abi_ulong arm_lr;
1428 abi_ulong arm_pc;
1429 abi_ulong arm_cpsr;
1430 abi_ulong fault_address;
43fff238
FB		 1431};
1432
a745ec6d
PB		 1433struct target_ucontext_v1 {
1434 abi_ulong tuc_flags;
1435 abi_ulong tuc_link;
c227f099 1436 target_stack_t tuc_stack;
a745ec6d 1437 struct target_sigcontext tuc_mcontext;
c227f099 1438 target_sigset_t tuc_sigmask; /* mask last for extensibility */
a745ec6d
PB		 1439};
1440
1441struct target_ucontext_v2 {
992f48a0
BS		 1442 abi_ulong tuc_flags;
1443 abi_ulong tuc_link;
c227f099 1444 target_stack_t tuc_stack;
b8076a74 1445 struct target_sigcontext tuc_mcontext;
c227f099 1446 target_sigset_t tuc_sigmask; /* mask last for extensibility */
5f0b7c88 1447 char __unused[128 - sizeof(target_sigset_t)];
a745ec6d 1448 abi_ulong tuc_regspace[128] __attribute__((__aligned__(8)));
43fff238
FB		 1449};
1450
0d871bdb
PM		 1451struct target_user_vfp {
1452 uint64_t fpregs[32];
1453 abi_ulong fpscr;
1454};
1455
1456struct target_user_vfp_exc {
1457 abi_ulong fpexc;
1458 abi_ulong fpinst;
1459 abi_ulong fpinst2;
1460};
1461
1462struct target_vfp_sigframe {
1463 abi_ulong magic;
1464 abi_ulong size;
1465 struct target_user_vfp ufp;
1466 struct target_user_vfp_exc ufp_exc;
1467} __attribute__((__aligned__(8)));
1468
08e11256
PM		 1469struct target_iwmmxt_sigframe {
1470 abi_ulong magic;
1471 abi_ulong size;
1472 uint64_t regs[16];
1473 /* Note that not all the coprocessor control registers are stored here */
1474 uint32_t wcssf;
1475 uint32_t wcasf;
1476 uint32_t wcgr0;
1477 uint32_t wcgr1;
1478 uint32_t wcgr2;
1479 uint32_t wcgr3;
1480} __attribute__((__aligned__(8)));
1481
0d871bdb 1482#define TARGET_VFP_MAGIC 0x56465001
08e11256 1483#define TARGET_IWMMXT_MAGIC 0x12ef842a
0d871bdb 1484
a8c33204 1485struct sigframe_v1
43fff238
FB		 1486{
1487 struct target_sigcontext sc;
992f48a0
BS		 1488 abi_ulong extramask[TARGET_NSIG_WORDS-1];
1489 abi_ulong retcode;
43fff238
FB		 1490};
1491
a8c33204
PB		 1492struct sigframe_v2
1493{
1494 struct target_ucontext_v2 uc;
1495 abi_ulong retcode;
1496};
1497
a745ec6d 1498struct rt_sigframe_v1
43fff238 1499{
f8b0aa25
FB		 1500 abi_ulong pinfo;
1501 abi_ulong puc;
43fff238 1502 struct target_siginfo info;
a745ec6d
PB		 1503 struct target_ucontext_v1 uc;
1504 abi_ulong retcode;
1505};
1506
1507struct rt_sigframe_v2
1508{
1509 struct target_siginfo info;
1510 struct target_ucontext_v2 uc;
992f48a0 1511 abi_ulong retcode;
43fff238
FB		 1512};
1513
1514#define TARGET_CONFIG_CPU_32 1
1515
1516/*
1517 * For ARM syscalls, we encode the syscall number into the instruction.
1518 */
1519#define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE))
1520#define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE))
1521
1522/*
1523 * For Thumb syscalls, we pass the syscall number via r7. We therefore
1524 * need two 16-bit instructions.
1525 */
1526#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn))
1527#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn))
1528
992f48a0 1529static const abi_ulong retcodes[4] = {
43fff238
FB		 1530 SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN,
1531 SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN
1532};
1533
1534
05390248 1535static inline int valid_user_regs(CPUARMState *regs)
43fff238
FB		 1536{
1537 return 1;
1538}
1539
a8c33204 1540static void
43fff238 1541setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
05390248 1542 CPUARMState *env, abi_ulong mask)
43fff238 1543{
a8c33204
PB		 1544 __put_user(env->regs[0], &sc->arm_r0);
1545 __put_user(env->regs[1], &sc->arm_r1);
1546 __put_user(env->regs[2], &sc->arm_r2);
1547 __put_user(env->regs[3], &sc->arm_r3);
1548 __put_user(env->regs[4], &sc->arm_r4);
1549 __put_user(env->regs[5], &sc->arm_r5);
1550 __put_user(env->regs[6], &sc->arm_r6);
1551 __put_user(env->regs[7], &sc->arm_r7);
1552 __put_user(env->regs[8], &sc->arm_r8);
1553 __put_user(env->regs[9], &sc->arm_r9);
1554 __put_user(env->regs[10], &sc->arm_r10);
1555 __put_user(env->regs[11], &sc->arm_fp);
1556 __put_user(env->regs[12], &sc->arm_ip);
1557 __put_user(env->regs[13], &sc->arm_sp);
1558 __put_user(env->regs[14], &sc->arm_lr);
1559 __put_user(env->regs[15], &sc->arm_pc);
43fff238 1560#ifdef TARGET_CONFIG_CPU_32
a8c33204 1561 __put_user(cpsr_read(env), &sc->arm_cpsr);
43fff238
FB		 1562#endif
1563
a8c33204
PB		 1564 __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
1565 __put_user(/* current->thread.error_code */ 0, &sc->error_code);
1566 __put_user(/* current->thread.address */ 0, &sc->fault_address);
1567 __put_user(mask, &sc->oldmask);
43fff238
FB		 1568}
1569
579a97f7 1570static inline abi_ulong
05390248 1571get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize)
43fff238
FB		 1572{
1573 unsigned long sp = regs->regs[13];
1574
43fff238
FB		 1575 /*
1576 * This is the X/Open sanctioned signal stack switching.
1577 */
624f7979 1578 if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp))
a04e134a 1579 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
43fff238
FB		 1580 /*
1581 * ATPCS B01 mandates 8-byte alignment
1582 */
579a97f7 1583 return (sp - framesize) & ~7;
43fff238
FB		 1584}
1585
0188fadb 1586static void
05390248 1587setup_return(CPUARMState *env, struct target_sigaction *ka,
f8b0aa25 1588 abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
43fff238 1589{
624f7979 1590 abi_ulong handler = ka->_sa_handler;
992f48a0 1591 abi_ulong retcode;
75b680e5 1592 int thumb = handler & 1;
964413d9
PM		 1593 uint32_t cpsr = cpsr_read(env);
1594
1595 cpsr &= ~CPSR_IT;
1596 if (thumb) {
1597 cpsr |= CPSR_T;
1598 } else {
1599 cpsr &= ~CPSR_T;
1600 }
43fff238 1601
624f7979
PB		 1602 if (ka->sa_flags & TARGET_SA_RESTORER) {
1603 retcode = ka->sa_restorer;
43fff238
FB		 1604 } else {
1605 unsigned int idx = thumb;
1606
624f7979 1607 if (ka->sa_flags & TARGET_SA_SIGINFO)
43fff238
FB		 1608 idx += 2;
1609
0188fadb 1610 __put_user(retcodes[idx], rc);
ca8a277c 1611
f8b0aa25 1612 retcode = rc_addr + thumb;
43fff238
FB		 1613 }
1614
1615 env->regs[0] = usig;
f8b0aa25 1616 env->regs[13] = frame_addr;
43fff238
FB		 1617 env->regs[14] = retcode;
1618 env->regs[15] = handler & (thumb ? ~1 : ~3);
964413d9 1619 cpsr_write(env, cpsr, 0xffffffff);
43fff238
FB		 1620}
1621
05390248 1622static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env)
0d871bdb
PM		 1623{
1624 int i;
1625 struct target_vfp_sigframe *vfpframe;
1626 vfpframe = (struct target_vfp_sigframe *)regspace;
1627 __put_user(TARGET_VFP_MAGIC, &vfpframe->magic);
1628 __put_user(sizeof(*vfpframe), &vfpframe->size);
1629 for (i = 0; i < 32; i++) {
005e1a0a 1630 __put_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]);
0d871bdb
PM		 1631 }
1632 __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr);
1633 __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc);
1634 __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
1635 __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
1636 return (abi_ulong*)(vfpframe+1);
1637}
1638
05390248
AF		 1639static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace,
1640 CPUARMState *env)
08e11256
PM		 1641{
1642 int i;
1643 struct target_iwmmxt_sigframe *iwmmxtframe;
1644 iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
1645 __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic);
1646 __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size);
1647 for (i = 0; i < 16; i++) {
1648 __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
1649 }
1650 __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
1651 __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
1652 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
1653 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
1654 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
1655 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
1656 return (abi_ulong*)(iwmmxtframe+1);
1657}
1658
a8c33204 1659static void setup_sigframe_v2(struct target_ucontext_v2 *uc,
05390248 1660 target_sigset_t *set, CPUARMState *env)
a8c33204
PB		 1661{
1662 struct target_sigaltstack stack;
1663 int i;
0d871bdb 1664 abi_ulong *regspace;
a8c33204
PB		 1665
1666 /* Clear all the bits of the ucontext we don't use. */
1667 memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext));
1668
1669 memset(&stack, 0, sizeof(stack));
1670 __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
1671 __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
1672 __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
1673 memcpy(&uc->tuc_stack, &stack, sizeof(stack));
1674
1675 setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]);
0d871bdb
PM		 1676 /* Save coprocessor signal frame. */
1677 regspace = uc->tuc_regspace;
1678 if (arm_feature(env, ARM_FEATURE_VFP)) {
1679 regspace = setup_sigframe_v2_vfp(regspace, env);
1680 }
08e11256
PM		 1681 if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
1682 regspace = setup_sigframe_v2_iwmmxt(regspace, env);
1683 }
1684
0d871bdb
PM		 1685 /* Write terminating magic word */
1686 __put_user(0, regspace);
1687
a8c33204
PB		 1688 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
1689 __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]);
1690 }
1691}
1692
579a97f7 1693/* compare linux/arch/arm/kernel/signal.c:setup_frame() */
624f7979 1694static void setup_frame_v1(int usig, struct target_sigaction *ka,
05390248 1695 target_sigset_t *set, CPUARMState *regs)
43fff238 1696{
a8c33204 1697 struct sigframe_v1 *frame;
579a97f7 1698 abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
a8c33204 1699 int i;
43fff238 1700
c8ee0a44 1701 trace_user_setup_frame(regs, frame_addr);
579a97f7
FB		 1702 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1703 return;
1704
a8c33204 1705 setup_sigcontext(&frame->sc, regs, set->sig[0]);
43fff238 1706
0188fadb
RV		 1707 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1708 __put_user(set->sig[i], &frame->extramask[i - 1]);
1709 }
43fff238 1710
a8c33204
PB		 1711 setup_return(regs, ka, &frame->retcode, frame_addr, usig,
1712 frame_addr + offsetof(struct sigframe_v1, retcode));
579a97f7 1713
579a97f7 1714 unlock_user_struct(frame, frame_addr, 1);
a8c33204
PB		 1715}
1716
624f7979 1717static void setup_frame_v2(int usig, struct target_sigaction *ka,
05390248 1718 target_sigset_t *set, CPUARMState *regs)
a8c33204
PB		 1719{
1720 struct sigframe_v2 *frame;
1721 abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
1722
c8ee0a44 1723 trace_user_setup_frame(regs, frame_addr);
a8c33204
PB		 1724 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1725 return;
1726
1727 setup_sigframe_v2(&frame->uc, set, regs);
1728
1729 setup_return(regs, ka, &frame->retcode, frame_addr, usig,
1730 frame_addr + offsetof(struct sigframe_v2, retcode));
1731
1732 unlock_user_struct(frame, frame_addr, 1);
1733}
1734
624f7979 1735static void setup_frame(int usig, struct target_sigaction *ka,
05390248 1736 target_sigset_t *set, CPUARMState *regs)
a8c33204
PB		 1737{
1738 if (get_osversion() >= 0x020612) {
1739 setup_frame_v2(usig, ka, set, regs);
1740 } else {
1741 setup_frame_v1(usig, ka, set, regs);
1742 }
43fff238
FB		 1743}
1744
579a97f7 1745/* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */
624f7979 1746static void setup_rt_frame_v1(int usig, struct target_sigaction *ka,
c227f099 1747 target_siginfo_t *info,
05390248 1748 target_sigset_t *set, CPUARMState *env)
43fff238 1749{
a745ec6d 1750 struct rt_sigframe_v1 *frame;
579a97f7 1751 abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
a04e134a 1752 struct target_sigaltstack stack;
a8c33204 1753 int i;
f8b0aa25 1754 abi_ulong info_addr, uc_addr;
43fff238 1755
c8ee0a44 1756 trace_user_setup_rt_frame(env, frame_addr);
579a97f7 1757 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
edf779ff
FB		 1758 return /* 1 */;
1759
a745ec6d 1760 info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info);
a8c33204 1761 __put_user(info_addr, &frame->pinfo);
a745ec6d 1762 uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
a8c33204 1763 __put_user(uc_addr, &frame->puc);
f6c7a05b 1764 tswap_siginfo(&frame->info, info);
43fff238
FB		 1765
1766 /* Clear all the bits of the ucontext we don't use. */
a745ec6d 1767 memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
43fff238 1768
a04e134a
TS		 1769 memset(&stack, 0, sizeof(stack));
1770 __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
1771 __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
1772 __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
775b58d8 1773 memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
a04e134a 1774
a8c33204 1775 setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]);
9231944d 1776 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
0188fadb 1777 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
9231944d 1778 }
43fff238 1779
a8c33204
PB		 1780 setup_return(env, ka, &frame->retcode, frame_addr, usig,
1781 frame_addr + offsetof(struct rt_sigframe_v1, retcode));
a745ec6d 1782
a8c33204
PB		 1783 env->regs[1] = info_addr;
1784 env->regs[2] = uc_addr;
a745ec6d 1785
a745ec6d 1786 unlock_user_struct(frame, frame_addr, 1);
a745ec6d
PB		 1787}
1788
624f7979 1789static void setup_rt_frame_v2(int usig, struct target_sigaction *ka,
c227f099 1790 target_siginfo_t *info,
05390248 1791 target_sigset_t *set, CPUARMState *env)
a745ec6d
PB		 1792{
1793 struct rt_sigframe_v2 *frame;
1794 abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
a745ec6d
PB		 1795 abi_ulong info_addr, uc_addr;
1796
c8ee0a44 1797 trace_user_setup_rt_frame(env, frame_addr);
a745ec6d
PB		 1798 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1799 return /* 1 */;
1800
1801 info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
1802 uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
f6c7a05b 1803 tswap_siginfo(&frame->info, info);
a745ec6d 1804
a8c33204 1805 setup_sigframe_v2(&frame->uc, set, env);
a745ec6d 1806
a8c33204
PB		 1807 setup_return(env, ka, &frame->retcode, frame_addr, usig,
1808 frame_addr + offsetof(struct rt_sigframe_v2, retcode));
a745ec6d 1809
a8c33204
PB		 1810 env->regs[1] = info_addr;
1811 env->regs[2] = uc_addr;
43fff238 1812
579a97f7 1813 unlock_user_struct(frame, frame_addr, 1);
43fff238
FB		 1814}
1815
624f7979 1816static void setup_rt_frame(int usig, struct target_sigaction *ka,
c227f099 1817 target_siginfo_t *info,
05390248 1818 target_sigset_t *set, CPUARMState *env)
a745ec6d
PB		 1819{
1820 if (get_osversion() >= 0x020612) {
1821 setup_rt_frame_v2(usig, ka, info, set, env);
1822 } else {
1823 setup_rt_frame_v1(usig, ka, info, set, env);
1824 }
1825}
1826
43fff238 1827static int
05390248 1828restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc)
43fff238
FB		 1829{
1830 int err = 0;
b5ff1b31 1831 uint32_t cpsr;
43fff238 1832
1d8b512b
RV		 1833 __get_user(env->regs[0], &sc->arm_r0);
1834 __get_user(env->regs[1], &sc->arm_r1);
1835 __get_user(env->regs[2], &sc->arm_r2);
1836 __get_user(env->regs[3], &sc->arm_r3);
1837 __get_user(env->regs[4], &sc->arm_r4);
1838 __get_user(env->regs[5], &sc->arm_r5);
1839 __get_user(env->regs[6], &sc->arm_r6);
1840 __get_user(env->regs[7], &sc->arm_r7);
1841 __get_user(env->regs[8], &sc->arm_r8);
1842 __get_user(env->regs[9], &sc->arm_r9);
1843 __get_user(env->regs[10], &sc->arm_r10);
1844 __get_user(env->regs[11], &sc->arm_fp);
1845 __get_user(env->regs[12], &sc->arm_ip);
1846 __get_user(env->regs[13], &sc->arm_sp);
1847 __get_user(env->regs[14], &sc->arm_lr);
1848 __get_user(env->regs[15], &sc->arm_pc);
43fff238 1849#ifdef TARGET_CONFIG_CPU_32
1d8b512b 1850 __get_user(cpsr, &sc->arm_cpsr);
75b680e5 1851 cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC);
43fff238
FB		 1852#endif
1853
1854 err |= !valid_user_regs(env);
1855
1856 return err;
1857}
1858
05390248 1859static long do_sigreturn_v1(CPUARMState *env)
43fff238 1860{
f8b0aa25 1861 abi_ulong frame_addr;
978fae9f 1862 struct sigframe_v1 *frame = NULL;
c227f099 1863 target_sigset_t set;
43fff238 1864 sigset_t host_set;
9231944d 1865 int i;
43fff238
FB		 1866
1867 /*
1868 * Since we stacked the signal on a 64-bit boundary,
1869 * then 'sp' should be word aligned here. If it's
1870 * not, then the user is trying to mess with us.
1871 */
f8b0aa25 1872 frame_addr = env->regs[13];
c8ee0a44 1873 trace_user_do_sigreturn(env, frame_addr);
978fae9f
PM		 1874 if (frame_addr & 7) {
1875 goto badframe;
1876 }
1877
f8b0aa25
FB		 1878 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1879 goto badframe;
43fff238 1880
f5f601af
RV		 1881 __get_user(set.sig[0], &frame->sc.oldmask);
1882 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1883 __get_user(set.sig[i], &frame->extramask[i - 1]);
1884 }
43fff238 1885
9231944d 1886 target_to_host_sigset_internal(&host_set, &set);
1c275925 1887 do_sigprocmask(SIG_SETMASK, &host_set, NULL);
43fff238
FB		 1888
1889 if (restore_sigcontext(env, &frame->sc))
1890 goto badframe;
1891
1892#if 0
1893 /* Send SIGTRAP if we're single-stepping */
1894 if (ptrace_cancel_bpt(current))
1895 send_sig(SIGTRAP, current, 1);
1896#endif
f8b0aa25
FB		 1897 unlock_user_struct(frame, frame_addr, 0);
1898 return env->regs[0];
43fff238
FB		 1899
1900badframe:
66393fb9 1901 force_sig(TARGET_SIGSEGV /* , current */);
43fff238
FB		 1902 return 0;
1903}
1904
05390248 1905static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *regspace)
5f9099d9
PM		 1906{
1907 int i;
1908 abi_ulong magic, sz;
1909 uint32_t fpscr, fpexc;
1910 struct target_vfp_sigframe *vfpframe;
1911 vfpframe = (struct target_vfp_sigframe *)regspace;
1912
1913 __get_user(magic, &vfpframe->magic);
1914 __get_user(sz, &vfpframe->size);
1915 if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) {
1916 return 0;
1917 }
1918 for (i = 0; i < 32; i++) {
005e1a0a 1919 __get_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]);
5f9099d9
PM		 1920 }
1921 __get_user(fpscr, &vfpframe->ufp.fpscr);
1922 vfp_set_fpscr(env, fpscr);
1923 __get_user(fpexc, &vfpframe->ufp_exc.fpexc);
1924 /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid
1925 * and the exception flag is cleared
1926 */
1927 fpexc |= (1 << 30);
1928 fpexc &= ~((1 << 31) | (1 << 28));
1929 env->vfp.xregs[ARM_VFP_FPEXC] = fpexc;
1930 __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
1931 __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
1932 return (abi_ulong*)(vfpframe + 1);
1933}
1934
05390248
AF		 1935static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env,
1936 abi_ulong *regspace)
a59d69da
PM		 1937{
1938 int i;
1939 abi_ulong magic, sz;
1940 struct target_iwmmxt_sigframe *iwmmxtframe;
1941 iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
1942
1943 __get_user(magic, &iwmmxtframe->magic);
1944 __get_user(sz, &iwmmxtframe->size);
1945 if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) {
1946 return 0;
1947 }
1948 for (i = 0; i < 16; i++) {
1949 __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
1950 }
1951 __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
1952 __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
1953 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
1954 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
1955 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
1956 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
1957 return (abi_ulong*)(iwmmxtframe + 1);
1958}
1959
05390248 1960static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr,
a8c33204
PB		 1961 struct target_ucontext_v2 *uc)
1962{
1963 sigset_t host_set;
5f9099d9 1964 abi_ulong *regspace;
a8c33204
PB		 1965
1966 target_to_host_sigset(&host_set, &uc->tuc_sigmask);
1c275925 1967 do_sigprocmask(SIG_SETMASK, &host_set, NULL);
a8c33204
PB		 1968
1969 if (restore_sigcontext(env, &uc->tuc_mcontext))
1970 return 1;
1971
5f9099d9
PM		 1972 /* Restore coprocessor signal frame */
1973 regspace = uc->tuc_regspace;
1974 if (arm_feature(env, ARM_FEATURE_VFP)) {
1975 regspace = restore_sigframe_v2_vfp(env, regspace);
1976 if (!regspace) {
1977 return 1;
1978 }
1979 }
a59d69da
PM		 1980 if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
1981 regspace = restore_sigframe_v2_iwmmxt(env, regspace);
1982 if (!regspace) {
1983 return 1;
1984 }
1985 }
5f9099d9 1986
a8c33204
PB		 1987 if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
1988 return 1;
1989
1990#if 0
1991 /* Send SIGTRAP if we're single-stepping */
1992 if (ptrace_cancel_bpt(current))
1993 send_sig(SIGTRAP, current, 1);
1994#endif
1995
1996 return 0;
1997}
1998
05390248 1999static long do_sigreturn_v2(CPUARMState *env)
a8c33204
PB		 2000{
2001 abi_ulong frame_addr;
978fae9f 2002 struct sigframe_v2 *frame = NULL;
a8c33204
PB		 2003
2004 /*
2005 * Since we stacked the signal on a 64-bit boundary,
2006 * then 'sp' should be word aligned here. If it's
2007 * not, then the user is trying to mess with us.
2008 */
a8c33204 2009 frame_addr = env->regs[13];
c8ee0a44 2010 trace_user_do_sigreturn(env, frame_addr);
978fae9f
PM		 2011 if (frame_addr & 7) {
2012 goto badframe;
2013 }
2014
a8c33204
PB		 2015 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
2016 goto badframe;
2017
2018 if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
2019 goto badframe;
2020
2021 unlock_user_struct(frame, frame_addr, 0);
2022 return env->regs[0];
2023
2024badframe:
2025 unlock_user_struct(frame, frame_addr, 0);
66393fb9 2026 force_sig(TARGET_SIGSEGV /* , current */);
a8c33204
PB		 2027 return 0;
2028}
2029
05390248 2030long do_sigreturn(CPUARMState *env)
a8c33204
PB		 2031{
2032 if (get_osversion() >= 0x020612) {
2033 return do_sigreturn_v2(env);
2034 } else {
2035 return do_sigreturn_v1(env);
2036 }
2037}
2038
05390248 2039static long do_rt_sigreturn_v1(CPUARMState *env)
43fff238 2040{
f8b0aa25 2041 abi_ulong frame_addr;
978fae9f 2042 struct rt_sigframe_v1 *frame = NULL;
a745ec6d
PB		 2043 sigset_t host_set;
2044
2045 /*
2046 * Since we stacked the signal on a 64-bit boundary,
2047 * then 'sp' should be word aligned here. If it's
2048 * not, then the user is trying to mess with us.
2049 */
a745ec6d 2050 frame_addr = env->regs[13];
c8ee0a44 2051 trace_user_do_rt_sigreturn(env, frame_addr);
978fae9f
PM		 2052 if (frame_addr & 7) {
2053 goto badframe;
2054 }
2055
a745ec6d
PB		 2056 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
2057 goto badframe;
2058
2059 target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask);
1c275925 2060 do_sigprocmask(SIG_SETMASK, &host_set, NULL);
a745ec6d
PB		 2061
2062 if (restore_sigcontext(env, &frame->uc.tuc_mcontext))
2063 goto badframe;
2064
2065 if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
2066 goto badframe;
2067
2068#if 0
2069 /* Send SIGTRAP if we're single-stepping */
2070 if (ptrace_cancel_bpt(current))
2071 send_sig(SIGTRAP, current, 1);
2072#endif
2073 unlock_user_struct(frame, frame_addr, 0);
2074 return env->regs[0];
2075
2076badframe:
2077 unlock_user_struct(frame, frame_addr, 0);
66393fb9 2078 force_sig(TARGET_SIGSEGV /* , current */);
a745ec6d
PB		 2079 return 0;
2080}
2081
05390248 2082static long do_rt_sigreturn_v2(CPUARMState *env)
a745ec6d
PB		 2083{
2084 abi_ulong frame_addr;
978fae9f 2085 struct rt_sigframe_v2 *frame = NULL;
43fff238
FB		 2086
2087 /*
2088 * Since we stacked the signal on a 64-bit boundary,
2089 * then 'sp' should be word aligned here. If it's
2090 * not, then the user is trying to mess with us.
2091 */
f8b0aa25 2092 frame_addr = env->regs[13];
c8ee0a44 2093 trace_user_do_rt_sigreturn(env, frame_addr);
978fae9f
PM		 2094 if (frame_addr & 7) {
2095 goto badframe;
2096 }
2097
f8b0aa25
FB		 2098 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
2099 goto badframe;
43fff238 2100
a8c33204
PB		 2101 if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
2102 goto badframe;
a04e134a 2103
f8b0aa25 2104 unlock_user_struct(frame, frame_addr, 0);
43fff238
FB		 2105 return env->regs[0];
2106
2107badframe:
f8b0aa25 2108 unlock_user_struct(frame, frame_addr, 0);
66393fb9 2109 force_sig(TARGET_SIGSEGV /* , current */);
43fff238
FB		 2110 return 0;
2111}
2112
05390248 2113long do_rt_sigreturn(CPUARMState *env)
a745ec6d
PB		 2114{
2115 if (get_osversion() >= 0x020612) {
2116 return do_rt_sigreturn_v2(env);
2117 } else {
2118 return do_rt_sigreturn_v1(env);
2119 }
2120}
2121
6d5e216d 2122#elif defined(TARGET_SPARC)
80a9d035 2123
6d5e216d
FB		 2124#define __SUNOS_MAXWIN 31
2125
2126/* This is what SunOS does, so shall I. */
2127struct target_sigcontext {
992f48a0 2128 abi_ulong sigc_onstack; /* state to restore */
6d5e216d 2129
992f48a0
BS		 2130 abi_ulong sigc_mask; /* sigmask to restore */
2131 abi_ulong sigc_sp; /* stack pointer */
2132 abi_ulong sigc_pc; /* program counter */
2133 abi_ulong sigc_npc; /* next program counter */
2134 abi_ulong sigc_psr; /* for condition codes etc */
2135 abi_ulong sigc_g1; /* User uses these two registers */
2136 abi_ulong sigc_o0; /* within the trampoline code. */
6d5e216d
FB		 2137
2138 /* Now comes information regarding the users window set
2139 * at the time of the signal.
2140 */
992f48a0 2141 abi_ulong sigc_oswins; /* outstanding windows */
6d5e216d
FB		 2142
2143 /* stack ptrs for each regwin buf */
2144 char *sigc_spbuf[__SUNOS_MAXWIN];
2145
2146 /* Windows to restore after signal */
2147 struct {
992f48a0
BS		 2148 abi_ulong locals[8];
2149 abi_ulong ins[8];
6d5e216d
FB		 2150 } sigc_wbuf[__SUNOS_MAXWIN];
2151};
2152/* A Sparc stack frame */
2153struct sparc_stackf {
992f48a0 2154 abi_ulong locals[8];
e321c34a
PM		 2155 abi_ulong ins[8];
2156 /* It's simpler to treat fp and callers_pc as elements of ins[]
2157 * since we never need to access them ourselves.
2158 */
6d5e216d 2159 char *structptr;
992f48a0
BS		 2160 abi_ulong xargs[6];
2161 abi_ulong xxargs[1];
6d5e216d
FB		 2162};
2163
2164typedef struct {
2165 struct {
992f48a0
BS		 2166 abi_ulong psr;
2167 abi_ulong pc;
2168 abi_ulong npc;
2169 abi_ulong y;
2170 abi_ulong u_regs[16]; /* globals and ins */
6d5e216d
FB		 2171 } si_regs;
2172 int si_mask;
2173} __siginfo_t;
2174
2175typedef struct {
8954bae3 2176 abi_ulong si_float_regs[32];
6d5e216d
FB		 2177 unsigned long si_fsr;
2178 unsigned long si_fpqdepth;
2179 struct {
2180 unsigned long *insn_addr;
2181 unsigned long insn;
2182 } si_fpqueue [16];
c227f099 2183} qemu_siginfo_fpu_t;
6d5e216d
FB		 2184
2185
2186struct target_signal_frame {
2187 struct sparc_stackf ss;
2188 __siginfo_t info;
f8b0aa25 2189 abi_ulong fpu_save;
992f48a0
BS		 2190 abi_ulong insns[2] __attribute__ ((aligned (8)));
2191 abi_ulong extramask[TARGET_NSIG_WORDS - 1];
2192 abi_ulong extra_size; /* Should be 0 */
c227f099 2193 qemu_siginfo_fpu_t fpu_state;
6d5e216d
FB		 2194};
2195struct target_rt_signal_frame {
2196 struct sparc_stackf ss;
2197 siginfo_t info;
992f48a0 2198 abi_ulong regs[20];
6d5e216d 2199 sigset_t mask;
f8b0aa25 2200 abi_ulong fpu_save;
6d5e216d
FB		 2201 unsigned int insns[2];
2202 stack_t stack;
2203 unsigned int extra_size; /* Should be 0 */
c227f099 2204 qemu_siginfo_fpu_t fpu_state;
6d5e216d
FB		 2205};
2206
e80cfcfc
FB		 2207#define UREG_O0 16
2208#define UREG_O6 22
2209#define UREG_I0 0
2210#define UREG_I1 1
2211#define UREG_I2 2
5bfb56b2
BS		 2212#define UREG_I3 3
2213#define UREG_I4 4
2214#define UREG_I5 5
e80cfcfc
FB		 2215#define UREG_I6 6
2216#define UREG_I7 7
2217#define UREG_L0 8
6d5e216d
FB		 2218#define UREG_FP UREG_I6
2219#define UREG_SP UREG_O6
2220
624f7979 2221static inline abi_ulong get_sigframe(struct target_sigaction *sa,
05390248
AF		 2222 CPUSPARCState *env,
2223 unsigned long framesize)
6d5e216d 2224{
459a4017 2225 abi_ulong sp;
6d5e216d
FB		 2226
2227 sp = env->regwptr[UREG_FP];
6d5e216d
FB		 2228
2229 /* This is the X/Open sanctioned signal stack switching. */
624f7979 2230 if (sa->sa_flags & TARGET_SA_ONSTACK) {
a04e134a
TS		 2231 if (!on_sig_stack(sp)
2232 && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7))
2233 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
6d5e216d 2234 }
459a4017 2235 return sp - framesize;
6d5e216d
FB		 2236}
2237
2238static int
05390248 2239setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask)
6d5e216d
FB		 2240{
2241 int err = 0, i;
2242
1d8b512b
RV		 2243 __put_user(env->psr, &si->si_regs.psr);
2244 __put_user(env->pc, &si->si_regs.pc);
2245 __put_user(env->npc, &si->si_regs.npc);
2246 __put_user(env->y, &si->si_regs.y);
a315a145 2247 for (i=0; i < 8; i++) {
1d8b512b 2248 __put_user(env->gregs[i], &si->si_regs.u_regs[i]);
6d5e216d 2249 }
a315a145 2250 for (i=0; i < 8; i++) {
1d8b512b 2251 __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
6d5e216d 2252 }
1d8b512b 2253 __put_user(mask, &si->si_mask);
6d5e216d
FB		 2254 return err;
2255}
e80cfcfc 2256
80a9d035 2257#if 0
6d5e216d
FB		 2258static int
2259setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
05390248 2260 CPUSPARCState *env, unsigned long mask)
6d5e216d
FB		 2261{
2262 int err = 0;
2263
1d8b512b
RV		 2264 __put_user(mask, &sc->sigc_mask);
2265 __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
2266 __put_user(env->pc, &sc->sigc_pc);
2267 __put_user(env->npc, &sc->sigc_npc);
2268 __put_user(env->psr, &sc->sigc_psr);
2269 __put_user(env->gregs[1], &sc->sigc_g1);
2270 __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
6d5e216d
FB		 2271
2272 return err;
2273}
80a9d035 2274#endif
6d5e216d
FB		 2275#define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7)))
2276
624f7979 2277static void setup_frame(int sig, struct target_sigaction *ka,
05390248 2278 target_sigset_t *set, CPUSPARCState *env)
6d5e216d 2279{
459a4017 2280 abi_ulong sf_addr;
6d5e216d
FB		 2281 struct target_signal_frame *sf;
2282 int sigframe_size, err, i;
2283
2284 /* 1. Make sure everything is clean */
2285 //synchronize_user_stack();
2286
2287 sigframe_size = NF_ALIGNEDSZ;
459a4017 2288 sf_addr = get_sigframe(ka, env, sigframe_size);
c8ee0a44 2289 trace_user_setup_frame(env, sf_addr);
6d5e216d 2290
459a4017
FB		 2291 sf = lock_user(VERIFY_WRITE, sf_addr,
2292 sizeof(struct target_signal_frame), 0);
2293 if (!sf)
2294 goto sigsegv;
2295
6d5e216d
FB		 2296#if 0
2297 if (invalid_frame_pointer(sf, sigframe_size))
2298 goto sigill_and_return;
2299#endif
2300 /* 2. Save the current process state */
2301 err = setup___siginfo(&sf->info, env, set->sig[0]);
1d8b512b 2302 __put_user(0, &sf->extra_size);
6d5e216d 2303
1d8b512b
RV		 2304 //save_fpu_state(regs, &sf->fpu_state);
2305 //__put_user(&sf->fpu_state, &sf->fpu_save);
6d5e216d 2306
1d8b512b 2307 __put_user(set->sig[0], &sf->info.si_mask);
6d5e216d 2308 for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
1d8b512b 2309 __put_user(set->sig[i + 1], &sf->extramask[i]);
6d5e216d
FB		 2310 }
2311
a315a145 2312 for (i = 0; i < 8; i++) {
1d8b512b 2313 __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]);
6d5e216d 2314 }
a315a145 2315 for (i = 0; i < 8; i++) {
1d8b512b 2316 __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]);
6d5e216d 2317 }
6d5e216d
FB		 2318 if (err)
2319 goto sigsegv;
2320
2321 /* 3. signal handler back-trampoline and parameters */
459a4017 2322 env->regwptr[UREG_FP] = sf_addr;
6d5e216d 2323 env->regwptr[UREG_I0] = sig;
459a4017
FB		 2324 env->regwptr[UREG_I1] = sf_addr +
2325 offsetof(struct target_signal_frame, info);
2326 env->regwptr[UREG_I2] = sf_addr +
2327 offsetof(struct target_signal_frame, info);
6d5e216d
FB		 2328
2329 /* 4. signal handler */
624f7979 2330 env->pc = ka->_sa_handler;
6d5e216d
FB		 2331 env->npc = (env->pc + 4);
2332 /* 5. return to kernel instructions */
624f7979
PB		 2333 if (ka->sa_restorer)
2334 env->regwptr[UREG_I7] = ka->sa_restorer;
6d5e216d 2335 else {
775b58d8 2336 uint32_t val32;
459a4017
FB		 2337
2338 env->regwptr[UREG_I7] = sf_addr +
2339 offsetof(struct target_signal_frame, insns) - 2 * 4;
6d5e216d
FB		 2340
2341 /* mov __NR_sigreturn, %g1 */
775b58d8 2342 val32 = 0x821020d8;
1d8b512b 2343 __put_user(val32, &sf->insns[0]);
6d5e216d
FB		 2344
2345 /* t 0x10 */
775b58d8 2346 val32 = 0x91d02010;
1d8b512b 2347 __put_user(val32, &sf->insns[1]);
6d5e216d
FB		 2348 if (err)
2349 goto sigsegv;
2350
2351 /* Flush instruction space. */
2352 //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
bbd77c18 2353 // tb_flush(CPU(sparc_env_get_cpu(env)));
6d5e216d 2354 }
459a4017 2355 unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
6d5e216d 2356 return;
459a4017
FB		 2357#if 0
2358sigill_and_return:
6d5e216d 2359 force_sig(TARGET_SIGILL);
459a4017 2360#endif
6d5e216d 2361sigsegv:
459a4017 2362 unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
6d5e216d
FB		 2363 force_sig(TARGET_SIGSEGV);
2364}
6d5e216d 2365
624f7979 2366static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 2367 target_siginfo_t *info,
05390248 2368 target_sigset_t *set, CPUSPARCState *env)
6d5e216d
FB		 2369{
2370 fprintf(stderr, "setup_rt_frame: not implemented\n");
2371}
2372
05390248 2373long do_sigreturn(CPUSPARCState *env)
6d5e216d 2374{
f8b0aa25 2375 abi_ulong sf_addr;
6d5e216d 2376 struct target_signal_frame *sf;
e80cfcfc 2377 uint32_t up_psr, pc, npc;
c227f099 2378 target_sigset_t set;
e80cfcfc 2379 sigset_t host_set;
1d8b512b 2380 int err=0, i;
6d5e216d 2381
f8b0aa25 2382 sf_addr = env->regwptr[UREG_FP];
c8ee0a44 2383 trace_user_do_sigreturn(env, sf_addr);
f8b0aa25
FB		 2384 if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1))
2385 goto segv_and_exit;
6d5e216d
FB		 2386
2387 /* 1. Make sure we are not getting garbage from the user */
6d5e216d 2388
f8b0aa25 2389 if (sf_addr & 3)
6d5e216d
FB		 2390 goto segv_and_exit;
2391
1d8b512b
RV		 2392 __get_user(pc, &sf->info.si_regs.pc);
2393 __get_user(npc, &sf->info.si_regs.npc);
6d5e216d 2394
6d5e216d
FB		 2395 if ((pc | npc) & 3)
2396 goto segv_and_exit;
2397
2398 /* 2. Restore the state */
1d8b512b 2399 __get_user(up_psr, &sf->info.si_regs.psr);
e80cfcfc 2400
6d5e216d 2401 /* User can only change condition codes and FPU enabling in %psr. */
a315a145
FB		 2402 env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
2403 | (env->psr & ~(PSR_ICC /* | PSR_EF */));
2404
2405 env->pc = pc;
2406 env->npc = npc;
1d8b512b 2407 __get_user(env->y, &sf->info.si_regs.y);
a315a145 2408 for (i=0; i < 8; i++) {
1d8b512b 2409 __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]);
e80cfcfc 2410 }
a315a145 2411 for (i=0; i < 8; i++) {
1d8b512b 2412 __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
e80cfcfc 2413 }
6d5e216d 2414
2aec3a27
PM		 2415 /* FIXME: implement FPU save/restore:
2416 * __get_user(fpu_save, &sf->fpu_save);
2417 * if (fpu_save)
2418 * err |= restore_fpu_state(env, fpu_save);
2419 */
6d5e216d
FB		 2420
2421 /* This is pretty much atomic, no amount locking would prevent
2422 * the races which exist anyways.
2423 */
1d8b512b 2424 __get_user(set.sig[0], &sf->info.si_mask);
e80cfcfc 2425 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1d8b512b 2426 __get_user(set.sig[i], &sf->extramask[i - 1]);
e80cfcfc
FB		 2427 }
2428
2429 target_to_host_sigset_internal(&host_set, &set);
1c275925 2430 do_sigprocmask(SIG_SETMASK, &host_set, NULL);
6d5e216d
FB		 2431
2432 if (err)
2433 goto segv_and_exit;
f8b0aa25 2434 unlock_user_struct(sf, sf_addr, 0);
6d5e216d
FB		 2435 return env->regwptr[0];
2436
2437segv_and_exit:
f8b0aa25 2438 unlock_user_struct(sf, sf_addr, 0);
6d5e216d
FB		 2439 force_sig(TARGET_SIGSEGV);
2440}
2441
05390248 2442long do_rt_sigreturn(CPUSPARCState *env)
6d5e216d 2443{
c8ee0a44 2444 trace_user_do_rt_sigreturn(env, 0);
6d5e216d 2445 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
f8b0aa25 2446 return -TARGET_ENOSYS;
6d5e216d
FB		 2447}
2448
459a4017 2449#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
5bfb56b2
BS		 2450#define MC_TSTATE 0
2451#define MC_PC 1
2452#define MC_NPC 2
2453#define MC_Y 3
2454#define MC_G1 4
2455#define MC_G2 5
2456#define MC_G3 6
2457#define MC_G4 7
2458#define MC_G5 8
2459#define MC_G6 9
2460#define MC_G7 10
2461#define MC_O0 11
2462#define MC_O1 12
2463#define MC_O2 13
2464#define MC_O3 14
2465#define MC_O4 15
2466#define MC_O5 16
2467#define MC_O6 17
2468#define MC_O7 18
2469#define MC_NGREG 19
2470
c227f099
AL		 2471typedef abi_ulong target_mc_greg_t;
2472typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG];
5bfb56b2
BS		 2473
2474struct target_mc_fq {
992f48a0 2475 abi_ulong *mcfq_addr;
5bfb56b2
BS		 2476 uint32_t mcfq_insn;
2477};
2478
2479struct target_mc_fpu {
2480 union {
2481 uint32_t sregs[32];
2482 uint64_t dregs[32];
2483 //uint128_t qregs[16];
2484 } mcfpu_fregs;
992f48a0
BS		 2485 abi_ulong mcfpu_fsr;
2486 abi_ulong mcfpu_fprs;
2487 abi_ulong mcfpu_gsr;
5bfb56b2
BS		 2488 struct target_mc_fq *mcfpu_fq;
2489 unsigned char mcfpu_qcnt;
2490 unsigned char mcfpu_qentsz;
2491 unsigned char mcfpu_enab;
2492};
c227f099 2493typedef struct target_mc_fpu target_mc_fpu_t;
5bfb56b2
BS		 2494
2495typedef struct {
c227f099
AL		 2496 target_mc_gregset_t mc_gregs;
2497 target_mc_greg_t mc_fp;
2498 target_mc_greg_t mc_i7;
2499 target_mc_fpu_t mc_fpregs;
2500} target_mcontext_t;
5bfb56b2
BS		 2501
2502struct target_ucontext {
60e99246
AJ		 2503 struct target_ucontext *tuc_link;
2504 abi_ulong tuc_flags;
2505 target_sigset_t tuc_sigmask;
2506 target_mcontext_t tuc_mcontext;
5bfb56b2
BS		 2507};
2508
2509/* A V9 register window */
2510struct target_reg_window {
992f48a0
BS		 2511 abi_ulong locals[8];
2512 abi_ulong ins[8];
5bfb56b2
BS		 2513};
2514
2515#define TARGET_STACK_BIAS 2047
2516
2517/* {set, get}context() needed for 64-bit SparcLinux userland. */
2518void sparc64_set_context(CPUSPARCState *env)
2519{
459a4017
FB		 2520 abi_ulong ucp_addr;
2521 struct target_ucontext *ucp;
c227f099 2522 target_mc_gregset_t *grp;
992f48a0 2523 abi_ulong pc, npc, tstate;
459a4017 2524 abi_ulong fp, i7, w_addr;
5bfb56b2 2525 unsigned int i;
5bfb56b2 2526
459a4017
FB		 2527 ucp_addr = env->regwptr[UREG_I0];
2528 if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1))
2529 goto do_sigsegv;
60e99246 2530 grp = &ucp->tuc_mcontext.mc_gregs;
1d8b512b
RV		 2531 __get_user(pc, &((*grp)[MC_PC]));
2532 __get_user(npc, &((*grp)[MC_NPC]));
be3ef5c7 2533 if ((pc | npc) & 3)
5bfb56b2
BS		 2534 goto do_sigsegv;
2535 if (env->regwptr[UREG_I1]) {
c227f099 2536 target_sigset_t target_set;
5bfb56b2
BS		 2537 sigset_t set;
2538
2539 if (TARGET_NSIG_WORDS == 1) {
be3ef5c7 2540 __get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0]);
5bfb56b2 2541 } else {
459a4017 2542 abi_ulong *src, *dst;
60e99246 2543 src = ucp->tuc_sigmask.sig;
459a4017 2544 dst = target_set.sig;
0d9e61c2 2545 for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) {
1d8b512b 2546 __get_user(*dst, src);
0d9e61c2 2547 }
5bfb56b2
BS		 2548 }
2549 target_to_host_sigset_internal(&set, &target_set);
1c275925 2550 do_sigprocmask(SIG_SETMASK, &set, NULL);
5bfb56b2
BS		 2551 }
2552 env->pc = pc;
2553 env->npc = npc;
1d8b512b
RV		 2554 __get_user(env->y, &((*grp)[MC_Y]));
2555 __get_user(tstate, &((*grp)[MC_TSTATE]));
5bfb56b2 2556 env->asi = (tstate >> 24) & 0xff;
5a834bb4
BS		 2557 cpu_put_ccr(env, tstate >> 32);
2558 cpu_put_cwp64(env, tstate & 0x1f);
1d8b512b
RV		 2559 __get_user(env->gregs[1], (&(*grp)[MC_G1]));
2560 __get_user(env->gregs[2], (&(*grp)[MC_G2]));
2561 __get_user(env->gregs[3], (&(*grp)[MC_G3]));
2562 __get_user(env->gregs[4], (&(*grp)[MC_G4]));
2563 __get_user(env->gregs[5], (&(*grp)[MC_G5]));
2564 __get_user(env->gregs[6], (&(*grp)[MC_G6]));
2565 __get_user(env->gregs[7], (&(*grp)[MC_G7]));
2566 __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0]));
2567 __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1]));
2568 __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2]));
2569 __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3]));
2570 __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4]));
2571 __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5]));
2572 __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6]));
2573 __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7]));
2574
2575 __get_user(fp, &(ucp->tuc_mcontext.mc_fp));
2576 __get_user(i7, &(ucp->tuc_mcontext.mc_i7));
579a97f7 2577
459a4017
FB		 2578 w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
2579 if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
2580 abi_ulong) != 0)
2581 goto do_sigsegv;
2582 if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
2583 abi_ulong) != 0)
2584 goto do_sigsegv;
c7b016ba
PM		 2585 /* FIXME this does not match how the kernel handles the FPU in
2586 * its sparc64_set_context implementation. In particular the FPU
2587 * is only restored if fenab is non-zero in:
2588 * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab));
2589 */
be3ef5c7 2590 __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs));
459a4017 2591 {
30038fd8
RH		 2592 uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
2593 for (i = 0; i < 64; i++, src++) {
2594 if (i & 1) {
1d8b512b 2595 __get_user(env->fpr[i/2].l.lower, src);
30038fd8 2596 } else {
1d8b512b 2597 __get_user(env->fpr[i/2].l.upper, src);
30038fd8
RH		 2598 }
2599 }
459a4017 2600 }
1d8b512b
RV		 2601 __get_user(env->fsr,
2602 &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr));
2603 __get_user(env->gsr,
2604 &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr));
459a4017 2605 unlock_user_struct(ucp, ucp_addr, 0);
5bfb56b2
BS		 2606 return;
2607 do_sigsegv:
459a4017 2608 unlock_user_struct(ucp, ucp_addr, 0);
66393fb9 2609 force_sig(TARGET_SIGSEGV);
5bfb56b2
BS		 2610}
2611
2612void sparc64_get_context(CPUSPARCState *env)
2613{
459a4017
FB		 2614 abi_ulong ucp_addr;
2615 struct target_ucontext *ucp;
c227f099
AL		 2616 target_mc_gregset_t *grp;
2617 target_mcontext_t *mcp;
459a4017 2618 abi_ulong fp, i7, w_addr;
5bfb56b2
BS		 2619 int err;
2620 unsigned int i;
c227f099 2621 target_sigset_t target_set;
5bfb56b2
BS		 2622 sigset_t set;
2623
459a4017
FB		 2624 ucp_addr = env->regwptr[UREG_I0];
2625 if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0))
2626 goto do_sigsegv;
2627
60e99246 2628 mcp = &ucp->tuc_mcontext;
5bfb56b2
BS		 2629 grp = &mcp->mc_gregs;
2630
2631 /* Skip over the trap instruction, first. */
2632 env->pc = env->npc;
2633 env->npc += 4;
2634
2635 err = 0;
2636
1c275925 2637 do_sigprocmask(0, NULL, &set);
5bfb56b2 2638 host_to_target_sigset_internal(&target_set, &set);
459a4017 2639 if (TARGET_NSIG_WORDS == 1) {
1d8b512b
RV		 2640 __put_user(target_set.sig[0],
2641 (abi_ulong *)&ucp->tuc_sigmask);
459a4017
FB		 2642 } else {
2643 abi_ulong *src, *dst;
2644 src = target_set.sig;
60e99246 2645 dst = ucp->tuc_sigmask.sig;
0d9e61c2 2646 for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) {
1d8b512b 2647 __put_user(*src, dst);
0d9e61c2 2648 }
5bfb56b2
BS		 2649 if (err)
2650 goto do_sigsegv;
2651 }
2652
459a4017 2653 /* XXX: tstate must be saved properly */
1d8b512b
RV		 2654 // __put_user(env->tstate, &((*grp)[MC_TSTATE]));
2655 __put_user(env->pc, &((*grp)[MC_PC]));
2656 __put_user(env->npc, &((*grp)[MC_NPC]));
2657 __put_user(env->y, &((*grp)[MC_Y]));
2658 __put_user(env->gregs[1], &((*grp)[MC_G1]));
2659 __put_user(env->gregs[2], &((*grp)[MC_G2]));
2660 __put_user(env->gregs[3], &((*grp)[MC_G3]));
2661 __put_user(env->gregs[4], &((*grp)[MC_G4]));
2662 __put_user(env->gregs[5], &((*grp)[MC_G5]));
2663 __put_user(env->gregs[6], &((*grp)[MC_G6]));
2664 __put_user(env->gregs[7], &((*grp)[MC_G7]));
2665 __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0]));
2666 __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1]));
2667 __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2]));
2668 __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3]));
2669 __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4]));
2670 __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5]));
2671 __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6]));
2672 __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7]));
579a97f7 2673
459a4017
FB		 2674 w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
2675 fp = i7 = 0;
2676 if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
2677 abi_ulong) != 0)
2678 goto do_sigsegv;
2679 if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
2680 abi_ulong) != 0)
2681 goto do_sigsegv;
1d8b512b
RV		 2682 __put_user(fp, &(mcp->mc_fp));
2683 __put_user(i7, &(mcp->mc_i7));
5bfb56b2 2684
459a4017 2685 {
30038fd8
RH		 2686 uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
2687 for (i = 0; i < 64; i++, dst++) {
2688 if (i & 1) {
1d8b512b 2689 __put_user(env->fpr[i/2].l.lower, dst);
30038fd8 2690 } else {
1d8b512b 2691 __put_user(env->fpr[i/2].l.upper, dst);
30038fd8
RH		 2692 }
2693 }
459a4017 2694 }
1d8b512b
RV		 2695 __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr));
2696 __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr));
2697 __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs));
5bfb56b2
BS		 2698
2699 if (err)
2700 goto do_sigsegv;
459a4017 2701 unlock_user_struct(ucp, ucp_addr, 1);
5bfb56b2
BS		 2702 return;
2703 do_sigsegv:
459a4017 2704 unlock_user_struct(ucp, ucp_addr, 1);
66393fb9 2705 force_sig(TARGET_SIGSEGV);
5bfb56b2
BS		 2706}
2707#endif
ff970904 2708#elif defined(TARGET_MIPS) || defined(TARGET_MIPS64)
106ec879 2709
ff970904 2710# if defined(TARGET_ABI_MIPSO32)
106ec879
FB		 2711struct target_sigcontext {
2712 uint32_t sc_regmask; /* Unused */
2713 uint32_t sc_status;
2714 uint64_t sc_pc;
2715 uint64_t sc_regs[32];
2716 uint64_t sc_fpregs[32];
2717 uint32_t sc_ownedfp; /* Unused */
2718 uint32_t sc_fpc_csr;
2719 uint32_t sc_fpc_eir; /* Unused */
2720 uint32_t sc_used_math;
2721 uint32_t sc_dsp; /* dsp status, was sc_ssflags */
94c5495d 2722 uint32_t pad0;
106ec879
FB		 2723 uint64_t sc_mdhi;
2724 uint64_t sc_mdlo;
2725 target_ulong sc_hi1; /* Was sc_cause */
2726 target_ulong sc_lo1; /* Was sc_badvaddr */
2727 target_ulong sc_hi2; /* Was sc_sigset[4] */
2728 target_ulong sc_lo2;
2729 target_ulong sc_hi3;
2730 target_ulong sc_lo3;
2731};
ff970904
RH		 2732# else /* N32 || N64 */
2733struct target_sigcontext {
2734 uint64_t sc_regs[32];
2735 uint64_t sc_fpregs[32];
2736 uint64_t sc_mdhi;
2737 uint64_t sc_hi1;
2738 uint64_t sc_hi2;
2739 uint64_t sc_hi3;
2740 uint64_t sc_mdlo;
2741 uint64_t sc_lo1;
2742 uint64_t sc_lo2;
2743 uint64_t sc_lo3;
2744 uint64_t sc_pc;
2745 uint32_t sc_fpc_csr;
2746 uint32_t sc_used_math;
2747 uint32_t sc_dsp;
2748 uint32_t sc_reserved;
2749};
2750# endif /* O32 */
106ec879
FB		 2751
2752struct sigframe {
2753 uint32_t sf_ass[4]; /* argument save space for o32 */
2754 uint32_t sf_code[2]; /* signal trampoline */
2755 struct target_sigcontext sf_sc;
c227f099 2756 target_sigset_t sf_mask;
106ec879
FB		 2757};
2758
0b1bcb00 2759struct target_ucontext {
60e99246
AJ		 2760 target_ulong tuc_flags;
2761 target_ulong tuc_link;
2762 target_stack_t tuc_stack;
94c5495d 2763 target_ulong pad0;
60e99246
AJ		 2764 struct target_sigcontext tuc_mcontext;
2765 target_sigset_t tuc_sigmask;
0b1bcb00
PB		 2766};
2767
2768struct target_rt_sigframe {
2769 uint32_t rs_ass[4]; /* argument save space for o32 */
2770 uint32_t rs_code[2]; /* signal trampoline */
2771 struct target_siginfo rs_info;
2772 struct target_ucontext rs_uc;
2773};
2774
106ec879
FB		 2775/* Install trampoline to jump back from signal handler */
2776static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall)
2777{
084d0497 2778 int err = 0;
106ec879
FB		 2779
2780 /*
084d0497
RH		 2781 * Set up the return code ...
2782 *
2783 * li v0, __NR__foo_sigreturn
2784 * syscall
2785 */
106ec879 2786
1d8b512b
RV		 2787 __put_user(0x24020000 + syscall, tramp + 0);
2788 __put_user(0x0000000c , tramp + 1);
106ec879
FB		 2789 return err;
2790}
2791
41ecc72b
RV		 2792static inline void setup_sigcontext(CPUMIPSState *regs,
2793 struct target_sigcontext *sc)
106ec879 2794{
084d0497 2795 int i;
106ec879 2796
1d8b512b 2797 __put_user(exception_resume_pc(regs), &sc->sc_pc);
1239b472 2798 regs->hflags &= ~MIPS_HFLAG_BMASK;
106ec879 2799
084d0497
RH		 2800 __put_user(0, &sc->sc_regs[0]);
2801 for (i = 1; i < 32; ++i) {
1d8b512b 2802 __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
084d0497 2803 }
106ec879 2804
1d8b512b
RV		 2805 __put_user(regs->active_tc.HI[0], &sc->sc_mdhi);
2806 __put_user(regs->active_tc.LO[0], &sc->sc_mdlo);
106ec879 2807
084d0497
RH		 2808 /* Rather than checking for dsp existence, always copy. The storage
2809 would just be garbage otherwise. */
1d8b512b
RV		 2810 __put_user(regs->active_tc.HI[1], &sc->sc_hi1);
2811 __put_user(regs->active_tc.HI[2], &sc->sc_hi2);
2812 __put_user(regs->active_tc.HI[3], &sc->sc_hi3);
2813 __put_user(regs->active_tc.LO[1], &sc->sc_lo1);
2814 __put_user(regs->active_tc.LO[2], &sc->sc_lo2);
2815 __put_user(regs->active_tc.LO[3], &sc->sc_lo3);
084d0497
RH		 2816 {
2817 uint32_t dsp = cpu_rddsp(0x3ff, regs);
1d8b512b 2818 __put_user(dsp, &sc->sc_dsp);
106ec879 2819 }
106ec879 2820
1d8b512b 2821 __put_user(1, &sc->sc_used_math);
106ec879 2822
084d0497 2823 for (i = 0; i < 32; ++i) {
1d8b512b 2824 __put_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
106ec879 2825 }
106ec879
FB		 2826}
2827
016d2e1d 2828static inline void
05390248 2829restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc)
106ec879 2830{
084d0497 2831 int i;
106ec879 2832
1d8b512b 2833 __get_user(regs->CP0_EPC, &sc->sc_pc);
106ec879 2834
1d8b512b
RV		 2835 __get_user(regs->active_tc.HI[0], &sc->sc_mdhi);
2836 __get_user(regs->active_tc.LO[0], &sc->sc_mdlo);
106ec879 2837
084d0497 2838 for (i = 1; i < 32; ++i) {
1d8b512b 2839 __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
106ec879 2840 }
106ec879 2841
1d8b512b
RV		 2842 __get_user(regs->active_tc.HI[1], &sc->sc_hi1);
2843 __get_user(regs->active_tc.HI[2], &sc->sc_hi2);
2844 __get_user(regs->active_tc.HI[3], &sc->sc_hi3);
2845 __get_user(regs->active_tc.LO[1], &sc->sc_lo1);
2846 __get_user(regs->active_tc.LO[2], &sc->sc_lo2);
2847 __get_user(regs->active_tc.LO[3], &sc->sc_lo3);
084d0497
RH		 2848 {
2849 uint32_t dsp;
1d8b512b 2850 __get_user(dsp, &sc->sc_dsp);
084d0497
RH		 2851 cpu_wrdsp(dsp, 0x3ff, regs);
2852 }
106ec879 2853
084d0497 2854 for (i = 0; i < 32; ++i) {
1d8b512b 2855 __get_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
106ec879 2856 }
106ec879 2857}
ff970904 2858
106ec879
FB		 2859/*
2860 * Determine which stack to use..
2861 */
579a97f7 2862static inline abi_ulong
05390248 2863get_sigframe(struct target_sigaction *ka, CPUMIPSState *regs, size_t frame_size)
106ec879
FB		 2864{
2865 unsigned long sp;
2866
2867 /* Default to using normal stack */
b5dc7732 2868 sp = regs->active_tc.gpr[29];
106ec879
FB		 2869
2870 /*
93148aa5 2871 * FPU emulator may have its own trampoline active just
106ec879
FB		 2872 * above the user stack, 16-bytes before the next lowest
2873 * 16 byte boundary. Try to avoid trashing it.
2874 */
2875 sp -= 32;
2876
106ec879 2877 /* This is the X/Open sanctioned signal stack switching. */
624f7979 2878 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
a04e134a
TS		 2879 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
2880 }
106ec879 2881
579a97f7 2882 return (sp - frame_size) & ~7;
106ec879
FB		 2883}
2884
ea3164aa
KCY		 2885static void mips_set_hflags_isa_mode_from_pc(CPUMIPSState *env)
2886{
2887 if (env->insn_flags & (ASE_MIPS16 | ASE_MICROMIPS)) {
2888 env->hflags &= ~MIPS_HFLAG_M16;
2889 env->hflags |= (env->active_tc.PC & 1) << MIPS_HFLAG_M16_SHIFT;
2890 env->active_tc.PC &= ~(target_ulong) 1;
2891 }
2892}
2893
ff970904 2894# if defined(TARGET_ABI_MIPSO32)
579a97f7 2895/* compare linux/arch/mips/kernel/signal.c:setup_frame() */
624f7979 2896static void setup_frame(int sig, struct target_sigaction * ka,
05390248 2897 target_sigset_t *set, CPUMIPSState *regs)
106ec879
FB		 2898{
2899 struct sigframe *frame;
579a97f7 2900 abi_ulong frame_addr;
106ec879
FB		 2901 int i;
2902
579a97f7 2903 frame_addr = get_sigframe(ka, regs, sizeof(*frame));
c8ee0a44 2904 trace_user_setup_frame(regs, frame_addr);
579a97f7 2905 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
106ec879
FB		 2906 goto give_sigsegv;
2907
2908 install_sigtramp(frame->sf_code, TARGET_NR_sigreturn);
2909
41ecc72b 2910 setup_sigcontext(regs, &frame->sf_sc);
106ec879
FB		 2911
2912 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
0188fadb 2913 __put_user(set->sig[i], &frame->sf_mask.sig[i]);
106ec879
FB		 2914 }
2915
2916 /*
2917 * Arguments to signal handler:
2918 *
2919 * a0 = signal number
2920 * a1 = 0 (should be cause)
2921 * a2 = pointer to struct sigcontext
2922 *
2923 * $25 and PC point to the signal handler, $29 points to the
2924 * struct sigframe.
2925 */
b5dc7732
TS		 2926 regs->active_tc.gpr[ 4] = sig;
2927 regs->active_tc.gpr[ 5] = 0;
2928 regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc);
2929 regs->active_tc.gpr[29] = frame_addr;
2930 regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code);
106ec879
FB		 2931 /* The original kernel code sets CP0_EPC to the handler
2932 * since it returns to userland using eret
2933 * we cannot do this here, and we must set PC directly */
b5dc7732 2934 regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler;
ea3164aa 2935 mips_set_hflags_isa_mode_from_pc(regs);
579a97f7 2936 unlock_user_struct(frame, frame_addr, 1);
106ec879
FB		 2937 return;
2938
2939give_sigsegv:
2940 force_sig(TARGET_SIGSEGV/*, current*/);
106ec879
FB		 2941}
2942
05390248 2943long do_sigreturn(CPUMIPSState *regs)
106ec879 2944{
388bb21a 2945 struct sigframe *frame;
579a97f7 2946 abi_ulong frame_addr;
388bb21a 2947 sigset_t blocked;
c227f099 2948 target_sigset_t target_set;
388bb21a 2949 int i;
106ec879 2950
b5dc7732 2951 frame_addr = regs->active_tc.gpr[29];
c8ee0a44 2952 trace_user_do_sigreturn(regs, frame_addr);
579a97f7 2953 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
106ec879
FB		 2954 goto badframe;
2955
388bb21a 2956 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
f5f601af 2957 __get_user(target_set.sig[i], &frame->sf_mask.sig[i]);
388bb21a 2958 }
106ec879 2959
388bb21a 2960 target_to_host_sigset_internal(&blocked, &target_set);
1c275925 2961 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
106ec879 2962
016d2e1d 2963 restore_sigcontext(regs, &frame->sf_sc);
106ec879
FB		 2964
2965#if 0
388bb21a
TS		 2966 /*
2967 * Don't let your children do this ...
2968 */
2969 __asm__ __volatile__(
106ec879
FB		 2970 "move\t$29, %0\n\t"
2971 "j\tsyscall_exit"
2972 :/* no outputs */
2973 :"r" (&regs));
388bb21a 2974 /* Unreached */
106ec879 2975#endif
3b46e624 2976
b5dc7732 2977 regs->active_tc.PC = regs->CP0_EPC;
ea3164aa 2978 mips_set_hflags_isa_mode_from_pc(regs);
388bb21a 2979 /* I am not sure this is right, but it seems to work
106ec879
FB		 2980 * maybe a problem with nested signals ? */
2981 regs->CP0_EPC = 0;
0b1bcb00 2982 return -TARGET_QEMU_ESIGRETURN;
106ec879
FB		 2983
2984badframe:
388bb21a
TS		 2985 force_sig(TARGET_SIGSEGV/*, current*/);
2986 return 0;
106ec879 2987}
ff970904 2988# endif /* O32 */
106ec879 2989
624f7979 2990static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 2991 target_siginfo_t *info,
05390248 2992 target_sigset_t *set, CPUMIPSState *env)
106ec879 2993{
0b1bcb00
PB		 2994 struct target_rt_sigframe *frame;
2995 abi_ulong frame_addr;
2996 int i;
2997
2998 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 2999 trace_user_setup_rt_frame(env, frame_addr);
0b1bcb00
PB		 3000 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3001 goto give_sigsegv;
3002
3003 install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn);
3004
f6c7a05b 3005 tswap_siginfo(&frame->rs_info, info);
0b1bcb00 3006
60e99246
AJ		 3007 __put_user(0, &frame->rs_uc.tuc_flags);
3008 __put_user(0, &frame->rs_uc.tuc_link);
3009 __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp);
3010 __put_user(target_sigaltstack_used.ss_size, &frame->rs_uc.tuc_stack.ss_size);
0b1bcb00 3011 __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
60e99246 3012 &frame->rs_uc.tuc_stack.ss_flags);
0b1bcb00 3013
60e99246 3014 setup_sigcontext(env, &frame->rs_uc.tuc_mcontext);
0b1bcb00
PB		 3015
3016 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
60e99246 3017 __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]);
0b1bcb00
PB		 3018 }
3019
3020 /*
3021 * Arguments to signal handler:
3022 *
3023 * a0 = signal number
02d2bd5d 3024 * a1 = pointer to siginfo_t
0b1bcb00
PB		 3025 * a2 = pointer to struct ucontext
3026 *
3027 * $25 and PC point to the signal handler, $29 points to the
3028 * struct sigframe.
3029 */
3030 env->active_tc.gpr[ 4] = sig;
3031 env->active_tc.gpr[ 5] = frame_addr
3032 + offsetof(struct target_rt_sigframe, rs_info);
3033 env->active_tc.gpr[ 6] = frame_addr
3034 + offsetof(struct target_rt_sigframe, rs_uc);
3035 env->active_tc.gpr[29] = frame_addr;
3036 env->active_tc.gpr[31] = frame_addr
3037 + offsetof(struct target_rt_sigframe, rs_code);
3038 /* The original kernel code sets CP0_EPC to the handler
3039 * since it returns to userland using eret
3040 * we cannot do this here, and we must set PC directly */
3041 env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler;
ea3164aa 3042 mips_set_hflags_isa_mode_from_pc(env);
0b1bcb00
PB		 3043 unlock_user_struct(frame, frame_addr, 1);
3044 return;
3045
3046give_sigsegv:
3047 unlock_user_struct(frame, frame_addr, 1);
3048 force_sig(TARGET_SIGSEGV/*, current*/);
106ec879
FB		 3049}
3050
05390248 3051long do_rt_sigreturn(CPUMIPSState *env)
106ec879 3052{
0b1bcb00
PB		 3053 struct target_rt_sigframe *frame;
3054 abi_ulong frame_addr;
3055 sigset_t blocked;
3056
0b1bcb00 3057 frame_addr = env->active_tc.gpr[29];
c8ee0a44 3058 trace_user_do_rt_sigreturn(env, frame_addr);
0b1bcb00
PB		 3059 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
3060 goto badframe;
3061
60e99246 3062 target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask);
1c275925 3063 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
0b1bcb00 3064
016d2e1d 3065 restore_sigcontext(env, &frame->rs_uc.tuc_mcontext);
0b1bcb00
PB		 3066
3067 if (do_sigaltstack(frame_addr +
60e99246 3068 offsetof(struct target_rt_sigframe, rs_uc.tuc_stack),
0b1bcb00
PB		 3069 0, get_sp_from_cpustate(env)) == -EFAULT)
3070 goto badframe;
3071
3072 env->active_tc.PC = env->CP0_EPC;
ea3164aa 3073 mips_set_hflags_isa_mode_from_pc(env);
0b1bcb00
PB		 3074 /* I am not sure this is right, but it seems to work
3075 * maybe a problem with nested signals ? */
3076 env->CP0_EPC = 0;
3077 return -TARGET_QEMU_ESIGRETURN;
3078
3079badframe:
3080 force_sig(TARGET_SIGSEGV/*, current*/);
3081 return 0;
106ec879 3082}
6d5e216d 3083
c3b5bc8a
TS		 3084#elif defined(TARGET_SH4)
3085
3086/*
3087 * code and data structures from linux kernel:
3088 * include/asm-sh/sigcontext.h
3089 * arch/sh/kernel/signal.c
3090 */
3091
3092struct target_sigcontext {
3093 target_ulong oldmask;
3094
3095 /* CPU registers */
3096 target_ulong sc_gregs[16];
3097 target_ulong sc_pc;
3098 target_ulong sc_pr;
3099 target_ulong sc_sr;
3100 target_ulong sc_gbr;
3101 target_ulong sc_mach;
3102 target_ulong sc_macl;
3103
3104 /* FPU registers */
3105 target_ulong sc_fpregs[16];
3106 target_ulong sc_xfpregs[16];
3107 unsigned int sc_fpscr;
3108 unsigned int sc_fpul;
3109 unsigned int sc_ownedfp;
3110};
3111
3112struct target_sigframe
3113{
3114 struct target_sigcontext sc;
3115 target_ulong extramask[TARGET_NSIG_WORDS-1];
3116 uint16_t retcode[3];
3117};
3118
3119
3120struct target_ucontext {
60e99246
AJ		 3121 target_ulong tuc_flags;
3122 struct target_ucontext *tuc_link;
3123 target_stack_t tuc_stack;
3124 struct target_sigcontext tuc_mcontext;
3125 target_sigset_t tuc_sigmask; /* mask last for extensibility */
c3b5bc8a
TS		 3126};
3127
3128struct target_rt_sigframe
3129{
3130 struct target_siginfo info;
3131 struct target_ucontext uc;
3132 uint16_t retcode[3];
3133};
3134
3135
3136#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
3137#define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */
3138
624f7979 3139static abi_ulong get_sigframe(struct target_sigaction *ka,
c3b5bc8a
TS		 3140 unsigned long sp, size_t frame_size)
3141{
624f7979 3142 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) {
c3b5bc8a
TS		 3143 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
3144 }
3145
3146 return (sp - frame_size) & -8ul;
3147}
3148
41ecc72b 3149static void setup_sigcontext(struct target_sigcontext *sc,
05390248 3150 CPUSH4State *regs, unsigned long mask)
c3b5bc8a 3151{
d8714436 3152 int i;
c3b5bc8a 3153
1d8b512b 3154#define COPY(x) __put_user(regs->x, &sc->sc_##x)
c3b5bc8a
TS		 3155 COPY(gregs[0]); COPY(gregs[1]);
3156 COPY(gregs[2]); COPY(gregs[3]);
3157 COPY(gregs[4]); COPY(gregs[5]);
3158 COPY(gregs[6]); COPY(gregs[7]);
3159 COPY(gregs[8]); COPY(gregs[9]);
3160 COPY(gregs[10]); COPY(gregs[11]);
3161 COPY(gregs[12]); COPY(gregs[13]);
3162 COPY(gregs[14]); COPY(gregs[15]);
3163 COPY(gbr); COPY(mach);
3164 COPY(macl); COPY(pr);
3165 COPY(sr); COPY(pc);
3166#undef COPY
3167
d8714436 3168 for (i=0; i<16; i++) {
1d8b512b 3169 __put_user(regs->fregs[i], &sc->sc_fpregs[i]);
d8714436 3170 }
1d8b512b
RV		 3171 __put_user(regs->fpscr, &sc->sc_fpscr);
3172 __put_user(regs->fpul, &sc->sc_fpul);
c3b5bc8a
TS		 3173
3174 /* non-iBCS2 extensions.. */
1d8b512b 3175 __put_user(mask, &sc->oldmask);
c3b5bc8a
TS		 3176}
3177
016d2e1d 3178static void restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc,
d8714436 3179 target_ulong *r0_p)
c3b5bc8a 3180{
d8714436 3181 int i;
c3b5bc8a 3182
1d8b512b 3183#define COPY(x) __get_user(regs->x, &sc->sc_##x)
c3b5bc8a
TS		 3184 COPY(gregs[1]);
3185 COPY(gregs[2]); COPY(gregs[3]);
3186 COPY(gregs[4]); COPY(gregs[5]);
3187 COPY(gregs[6]); COPY(gregs[7]);
3188 COPY(gregs[8]); COPY(gregs[9]);
3189 COPY(gregs[10]); COPY(gregs[11]);
3190 COPY(gregs[12]); COPY(gregs[13]);
3191 COPY(gregs[14]); COPY(gregs[15]);
3192 COPY(gbr); COPY(mach);
3193 COPY(macl); COPY(pr);
3194 COPY(sr); COPY(pc);
3195#undef COPY
3196
d8714436 3197 for (i=0; i<16; i++) {
1d8b512b 3198 __get_user(regs->fregs[i], &sc->sc_fpregs[i]);
d8714436 3199 }
1d8b512b
RV		 3200 __get_user(regs->fpscr, &sc->sc_fpscr);
3201 __get_user(regs->fpul, &sc->sc_fpul);
c3b5bc8a
TS		 3202
3203 regs->tra = -1; /* disable syscall checks */
1d8b512b 3204 __get_user(*r0_p, &sc->sc_gregs[0]);
c3b5bc8a
TS		 3205}
3206
624f7979 3207static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3208 target_sigset_t *set, CPUSH4State *regs)
c3b5bc8a
TS		 3209{
3210 struct target_sigframe *frame;
3211 abi_ulong frame_addr;
3212 int i;
3213 int err = 0;
c3b5bc8a
TS		 3214
3215 frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
c8ee0a44 3216 trace_user_setup_frame(regs, frame_addr);
c3b5bc8a
TS		 3217 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3218 goto give_sigsegv;
3219
41ecc72b 3220 setup_sigcontext(&frame->sc, regs, set->sig[0]);
c3b5bc8a
TS		 3221
3222 for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
1d8b512b 3223 __put_user(set->sig[i + 1], &frame->extramask[i]);
c3b5bc8a
TS		 3224 }
3225
3226 /* Set up to return from userspace. If provided, use a stub
3227 already in userspace. */
624f7979
PB		 3228 if (ka->sa_flags & TARGET_SA_RESTORER) {
3229 regs->pr = (unsigned long) ka->sa_restorer;
c3b5bc8a
TS		 3230 } else {
3231 /* Generate return code (system call to sigreturn) */
1d8b512b
RV		 3232 __put_user(MOVW(2), &frame->retcode[0]);
3233 __put_user(TRAP_NOARG, &frame->retcode[1]);
3234 __put_user((TARGET_NR_sigreturn), &frame->retcode[2]);
c3b5bc8a
TS		 3235 regs->pr = (unsigned long) frame->retcode;
3236 }
3237
3238 if (err)
3239 goto give_sigsegv;
3240
3241 /* Set up registers for signal handler */
cb9c6268 3242 regs->gregs[15] = frame_addr;
b6e2c935 3243 regs->gregs[4] = sig; /* Arg for signal handler */
c3b5bc8a 3244 regs->gregs[5] = 0;
cb9c6268 3245 regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc);
624f7979 3246 regs->pc = (unsigned long) ka->_sa_handler;
c3b5bc8a
TS		 3247
3248 unlock_user_struct(frame, frame_addr, 1);
3249 return;
3250
3251give_sigsegv:
3252 unlock_user_struct(frame, frame_addr, 1);
66393fb9 3253 force_sig(TARGET_SIGSEGV);
c3b5bc8a
TS		 3254}
3255
624f7979 3256static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3257 target_siginfo_t *info,
05390248 3258 target_sigset_t *set, CPUSH4State *regs)
c3b5bc8a
TS		 3259{
3260 struct target_rt_sigframe *frame;
3261 abi_ulong frame_addr;
3262 int i;
3263 int err = 0;
c3b5bc8a
TS		 3264
3265 frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
c8ee0a44 3266 trace_user_setup_rt_frame(regs, frame_addr);
c3b5bc8a
TS		 3267 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3268 goto give_sigsegv;
3269
f6c7a05b 3270 tswap_siginfo(&frame->info, info);
c3b5bc8a
TS		 3271
3272 /* Create the ucontext. */
1d8b512b
RV		 3273 __put_user(0, &frame->uc.tuc_flags);
3274 __put_user(0, (unsigned long *)&frame->uc.tuc_link);
3275 __put_user((unsigned long)target_sigaltstack_used.ss_sp,
3276 &frame->uc.tuc_stack.ss_sp);
3277 __put_user(sas_ss_flags(regs->gregs[15]),
3278 &frame->uc.tuc_stack.ss_flags);
3279 __put_user(target_sigaltstack_used.ss_size,
3280 &frame->uc.tuc_stack.ss_size);
3281 setup_sigcontext(&frame->uc.tuc_mcontext,
c3b5bc8a
TS		 3282 regs, set->sig[0]);
3283 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
1d8b512b 3284 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
c3b5bc8a
TS		 3285 }
3286
3287 /* Set up to return from userspace. If provided, use a stub
3288 already in userspace. */
624f7979
PB		 3289 if (ka->sa_flags & TARGET_SA_RESTORER) {
3290 regs->pr = (unsigned long) ka->sa_restorer;
c3b5bc8a
TS		 3291 } else {
3292 /* Generate return code (system call to sigreturn) */
1d8b512b
RV		 3293 __put_user(MOVW(2), &frame->retcode[0]);
3294 __put_user(TRAP_NOARG, &frame->retcode[1]);
3295 __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]);
c3b5bc8a
TS		 3296 regs->pr = (unsigned long) frame->retcode;
3297 }
3298
3299 if (err)
3300 goto give_sigsegv;
3301
3302 /* Set up registers for signal handler */
cb9c6268 3303 regs->gregs[15] = frame_addr;
b6e2c935 3304 regs->gregs[4] = sig; /* Arg for signal handler */
cb9c6268
EI		 3305 regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info);
3306 regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc);
624f7979 3307 regs->pc = (unsigned long) ka->_sa_handler;
c3b5bc8a
TS		 3308
3309 unlock_user_struct(frame, frame_addr, 1);
3310 return;
3311
3312give_sigsegv:
3313 unlock_user_struct(frame, frame_addr, 1);
66393fb9 3314 force_sig(TARGET_SIGSEGV);
c3b5bc8a
TS		 3315}
3316
05390248 3317long do_sigreturn(CPUSH4State *regs)
c3b5bc8a
TS		 3318{
3319 struct target_sigframe *frame;
3320 abi_ulong frame_addr;
3321 sigset_t blocked;
c227f099 3322 target_sigset_t target_set;
d8714436 3323 target_ulong r0;
c3b5bc8a
TS		 3324 int i;
3325 int err = 0;
3326
c3b5bc8a 3327 frame_addr = regs->gregs[15];
c8ee0a44 3328 trace_user_do_sigreturn(regs, frame_addr);
c3b5bc8a
TS		 3329 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
3330 goto badframe;
3331
1d8b512b 3332 __get_user(target_set.sig[0], &frame->sc.oldmask);
c3b5bc8a 3333 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1d8b512b 3334 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
c3b5bc8a
TS		 3335 }
3336
3337 if (err)
3338 goto badframe;
3339
3340 target_to_host_sigset_internal(&blocked, &target_set);
1c275925 3341 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
c3b5bc8a 3342
016d2e1d 3343 restore_sigcontext(regs, &frame->sc, &r0);
c3b5bc8a
TS		 3344
3345 unlock_user_struct(frame, frame_addr, 0);
d8714436 3346 return r0;
c3b5bc8a
TS		 3347
3348badframe:
3349 unlock_user_struct(frame, frame_addr, 0);
3350 force_sig(TARGET_SIGSEGV);
3351 return 0;
3352}
3353
05390248 3354long do_rt_sigreturn(CPUSH4State *regs)
c3b5bc8a
TS		 3355{
3356 struct target_rt_sigframe *frame;
3357 abi_ulong frame_addr;
3358 sigset_t blocked;
d8714436 3359 target_ulong r0;
c3b5bc8a 3360
c3b5bc8a 3361 frame_addr = regs->gregs[15];
c8ee0a44 3362 trace_user_do_rt_sigreturn(regs, frame_addr);
c3b5bc8a
TS		 3363 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
3364 goto badframe;
3365
60e99246 3366 target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask);
1c275925 3367 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
c3b5bc8a 3368
016d2e1d 3369 restore_sigcontext(regs, &frame->uc.tuc_mcontext, &r0);
c3b5bc8a
TS		 3370
3371 if (do_sigaltstack(frame_addr +
60e99246 3372 offsetof(struct target_rt_sigframe, uc.tuc_stack),
c3b5bc8a
TS		 3373 0, get_sp_from_cpustate(regs)) == -EFAULT)
3374 goto badframe;
3375
3376 unlock_user_struct(frame, frame_addr, 0);
d8714436 3377 return r0;
c3b5bc8a
TS		 3378
3379badframe:
3380 unlock_user_struct(frame, frame_addr, 0);
3381 force_sig(TARGET_SIGSEGV);
3382 return 0;
3383}
b779e29e
EI		 3384#elif defined(TARGET_MICROBLAZE)
3385
3386struct target_sigcontext {
3387 struct target_pt_regs regs; /* needs to be first */
3388 uint32_t oldmask;
3389};
3390
b2178704
EI		 3391struct target_stack_t {
3392 abi_ulong ss_sp;
3393 int ss_flags;
3394 unsigned int ss_size;
3395};
3396
3397struct target_ucontext {
f711df67
RH		 3398 abi_ulong tuc_flags;
3399 abi_ulong tuc_link;
3400 struct target_stack_t tuc_stack;
3401 struct target_sigcontext tuc_mcontext;
3402 uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1];
b2178704
EI		 3403};
3404
b779e29e
EI		 3405/* Signal frames. */
3406struct target_signal_frame {
b2178704 3407 struct target_ucontext uc;
b779e29e
EI		 3408 uint32_t extramask[TARGET_NSIG_WORDS - 1];
3409 uint32_t tramp[2];
3410};
3411
3412struct rt_signal_frame {
02d2bd5d 3413 siginfo_t info;
b779e29e
EI		 3414 struct ucontext uc;
3415 uint32_t tramp[2];
3416};
3417
05390248 3418static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
b779e29e
EI		 3419{
3420 __put_user(env->regs[0], &sc->regs.r0);
3421 __put_user(env->regs[1], &sc->regs.r1);
3422 __put_user(env->regs[2], &sc->regs.r2);
3423 __put_user(env->regs[3], &sc->regs.r3);
3424 __put_user(env->regs[4], &sc->regs.r4);
3425 __put_user(env->regs[5], &sc->regs.r5);
3426 __put_user(env->regs[6], &sc->regs.r6);
3427 __put_user(env->regs[7], &sc->regs.r7);
3428 __put_user(env->regs[8], &sc->regs.r8);
3429 __put_user(env->regs[9], &sc->regs.r9);
3430 __put_user(env->regs[10], &sc->regs.r10);
3431 __put_user(env->regs[11], &sc->regs.r11);
3432 __put_user(env->regs[12], &sc->regs.r12);
3433 __put_user(env->regs[13], &sc->regs.r13);
3434 __put_user(env->regs[14], &sc->regs.r14);
3435 __put_user(env->regs[15], &sc->regs.r15);
3436 __put_user(env->regs[16], &sc->regs.r16);
3437 __put_user(env->regs[17], &sc->regs.r17);
3438 __put_user(env->regs[18], &sc->regs.r18);
3439 __put_user(env->regs[19], &sc->regs.r19);
3440 __put_user(env->regs[20], &sc->regs.r20);
3441 __put_user(env->regs[21], &sc->regs.r21);
3442 __put_user(env->regs[22], &sc->regs.r22);
3443 __put_user(env->regs[23], &sc->regs.r23);
3444 __put_user(env->regs[24], &sc->regs.r24);
3445 __put_user(env->regs[25], &sc->regs.r25);
3446 __put_user(env->regs[26], &sc->regs.r26);
3447 __put_user(env->regs[27], &sc->regs.r27);
3448 __put_user(env->regs[28], &sc->regs.r28);
3449 __put_user(env->regs[29], &sc->regs.r29);
3450 __put_user(env->regs[30], &sc->regs.r30);
3451 __put_user(env->regs[31], &sc->regs.r31);
3452 __put_user(env->sregs[SR_PC], &sc->regs.pc);
3453}
3454
05390248 3455static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
b779e29e
EI		 3456{
3457 __get_user(env->regs[0], &sc->regs.r0);
3458 __get_user(env->regs[1], &sc->regs.r1);
3459 __get_user(env->regs[2], &sc->regs.r2);
3460 __get_user(env->regs[3], &sc->regs.r3);
3461 __get_user(env->regs[4], &sc->regs.r4);
3462 __get_user(env->regs[5], &sc->regs.r5);
3463 __get_user(env->regs[6], &sc->regs.r6);
3464 __get_user(env->regs[7], &sc->regs.r7);
3465 __get_user(env->regs[8], &sc->regs.r8);
3466 __get_user(env->regs[9], &sc->regs.r9);
3467 __get_user(env->regs[10], &sc->regs.r10);
3468 __get_user(env->regs[11], &sc->regs.r11);
3469 __get_user(env->regs[12], &sc->regs.r12);
3470 __get_user(env->regs[13], &sc->regs.r13);
3471 __get_user(env->regs[14], &sc->regs.r14);
3472 __get_user(env->regs[15], &sc->regs.r15);
3473 __get_user(env->regs[16], &sc->regs.r16);
3474 __get_user(env->regs[17], &sc->regs.r17);
3475 __get_user(env->regs[18], &sc->regs.r18);
3476 __get_user(env->regs[19], &sc->regs.r19);
3477 __get_user(env->regs[20], &sc->regs.r20);
3478 __get_user(env->regs[21], &sc->regs.r21);
3479 __get_user(env->regs[22], &sc->regs.r22);
3480 __get_user(env->regs[23], &sc->regs.r23);
3481 __get_user(env->regs[24], &sc->regs.r24);
3482 __get_user(env->regs[25], &sc->regs.r25);
3483 __get_user(env->regs[26], &sc->regs.r26);
3484 __get_user(env->regs[27], &sc->regs.r27);
3485 __get_user(env->regs[28], &sc->regs.r28);
3486 __get_user(env->regs[29], &sc->regs.r29);
3487 __get_user(env->regs[30], &sc->regs.r30);
3488 __get_user(env->regs[31], &sc->regs.r31);
3489 __get_user(env->sregs[SR_PC], &sc->regs.pc);
3490}
3491
3492static abi_ulong get_sigframe(struct target_sigaction *ka,
05390248 3493 CPUMBState *env, int frame_size)
b779e29e
EI		 3494{
3495 abi_ulong sp = env->regs[1];
3496
b545f63f 3497 if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !on_sig_stack(sp)) {
b779e29e 3498 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
b545f63f 3499 }
b779e29e
EI		 3500
3501 return ((sp - frame_size) & -8UL);
3502}
3503
3504static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3505 target_sigset_t *set, CPUMBState *env)
b779e29e
EI		 3506{
3507 struct target_signal_frame *frame;
3508 abi_ulong frame_addr;
b779e29e
EI		 3509 int i;
3510
3511 frame_addr = get_sigframe(ka, env, sizeof *frame);
c8ee0a44 3512 trace_user_setup_frame(env, frame_addr);
b779e29e
EI		 3513 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3514 goto badframe;
3515
3516 /* Save the mask. */
1d8b512b 3517 __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask);
b779e29e
EI		 3518
3519 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
0188fadb 3520 __put_user(set->sig[i], &frame->extramask[i - 1]);
b779e29e
EI		 3521 }
3522
f711df67 3523 setup_sigcontext(&frame->uc.tuc_mcontext, env);
b779e29e
EI		 3524
3525 /* Set up to return from userspace. If provided, use a stub
3526 already in userspace. */
3527 /* minus 8 is offset to cater for "rtsd r15,8" offset */
3528 if (ka->sa_flags & TARGET_SA_RESTORER) {
3529 env->regs[15] = ((unsigned long)ka->sa_restorer)-8;
3530 } else {
3531 uint32_t t;
3532 /* Note, these encodings are _big endian_! */
3533 /* addi r12, r0, __NR_sigreturn */
3534 t = 0x31800000UL | TARGET_NR_sigreturn;
1d8b512b 3535 __put_user(t, frame->tramp + 0);
b779e29e
EI		 3536 /* brki r14, 0x8 */
3537 t = 0xb9cc0008UL;
1d8b512b 3538 __put_user(t, frame->tramp + 1);
b779e29e
EI		 3539
3540 /* Return from sighandler will jump to the tramp.
3541 Negative 8 offset because return is rtsd r15, 8 */
3542 env->regs[15] = ((unsigned long)frame->tramp) - 8;
3543 }
3544
b779e29e 3545 /* Set up registers for signal handler */
cb9c6268 3546 env->regs[1] = frame_addr;
b779e29e
EI		 3547 /* Signal handler args: */
3548 env->regs[5] = sig; /* Arg 0: signum */
187b4e08 3549 env->regs[6] = 0;
cb9c6268
EI		 3550 /* arg 1: sigcontext */
3551 env->regs[7] = frame_addr += offsetof(typeof(*frame), uc);
b779e29e
EI		 3552
3553 /* Offset of 4 to handle microblaze rtid r14, 0 */
3554 env->sregs[SR_PC] = (unsigned long)ka->_sa_handler;
3555
3556 unlock_user_struct(frame, frame_addr, 1);
3557 return;
3558 badframe:
b779e29e
EI		 3559 force_sig(TARGET_SIGSEGV);
3560}
3561
3562static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3563 target_siginfo_t *info,
05390248 3564 target_sigset_t *set, CPUMBState *env)
b779e29e
EI		 3565{
3566 fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n");
3567}
3568
05390248 3569long do_sigreturn(CPUMBState *env)
b779e29e
EI		 3570{
3571 struct target_signal_frame *frame;
3572 abi_ulong frame_addr;
c227f099 3573 target_sigset_t target_set;
b779e29e
EI		 3574 sigset_t set;
3575 int i;
3576
3577 frame_addr = env->regs[R_SP];
c8ee0a44 3578 trace_user_do_sigreturn(env, frame_addr);
b779e29e
EI		 3579 /* Make sure the guest isn't playing games. */
3580 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
3581 goto badframe;
3582
3583 /* Restore blocked signals */
f5f601af 3584 __get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask);
b779e29e 3585 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
f5f601af 3586 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
b779e29e
EI		 3587 }
3588 target_to_host_sigset_internal(&set, &target_set);
1c275925 3589 do_sigprocmask(SIG_SETMASK, &set, NULL);
b779e29e 3590
f711df67 3591 restore_sigcontext(&frame->uc.tuc_mcontext, env);
b779e29e
EI		 3592 /* We got here through a sigreturn syscall, our path back is via an
3593 rtb insn so setup r14 for that. */
3594 env->regs[14] = env->sregs[SR_PC];
3595
3596 unlock_user_struct(frame, frame_addr, 0);
3597 return env->regs[10];
3598 badframe:
b779e29e
EI		 3599 force_sig(TARGET_SIGSEGV);
3600}
3601
05390248 3602long do_rt_sigreturn(CPUMBState *env)
b779e29e 3603{
c8ee0a44 3604 trace_user_do_rt_sigreturn(env, 0);
b779e29e
EI		 3605 fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
3606 return -TARGET_ENOSYS;
3607}
3608
b6d3abda
EI		 3609#elif defined(TARGET_CRIS)
3610
3611struct target_sigcontext {
3612 struct target_pt_regs regs; /* needs to be first */
3613 uint32_t oldmask;
3614 uint32_t usp; /* usp before stacking this gunk on it */
3615};
3616
3617/* Signal frames. */
3618struct target_signal_frame {
3619 struct target_sigcontext sc;
3620 uint32_t extramask[TARGET_NSIG_WORDS - 1];
8cfc114a 3621 uint16_t retcode[4]; /* Trampoline code. */
b6d3abda
EI		 3622};
3623
3624struct rt_signal_frame {
02d2bd5d 3625 siginfo_t *pinfo;
b6d3abda 3626 void *puc;
02d2bd5d 3627 siginfo_t info;
b6d3abda 3628 struct ucontext uc;
8cfc114a 3629 uint16_t retcode[4]; /* Trampoline code. */
b6d3abda
EI		 3630};
3631
05390248 3632static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
b6d3abda 3633{
9664d928
EI		 3634 __put_user(env->regs[0], &sc->regs.r0);
3635 __put_user(env->regs[1], &sc->regs.r1);
3636 __put_user(env->regs[2], &sc->regs.r2);
3637 __put_user(env->regs[3], &sc->regs.r3);
3638 __put_user(env->regs[4], &sc->regs.r4);
3639 __put_user(env->regs[5], &sc->regs.r5);
3640 __put_user(env->regs[6], &sc->regs.r6);
3641 __put_user(env->regs[7], &sc->regs.r7);
3642 __put_user(env->regs[8], &sc->regs.r8);
3643 __put_user(env->regs[9], &sc->regs.r9);
3644 __put_user(env->regs[10], &sc->regs.r10);
3645 __put_user(env->regs[11], &sc->regs.r11);
3646 __put_user(env->regs[12], &sc->regs.r12);
3647 __put_user(env->regs[13], &sc->regs.r13);
3648 __put_user(env->regs[14], &sc->usp);
3649 __put_user(env->regs[15], &sc->regs.acr);
3650 __put_user(env->pregs[PR_MOF], &sc->regs.mof);
3651 __put_user(env->pregs[PR_SRP], &sc->regs.srp);
3652 __put_user(env->pc, &sc->regs.erp);
b6d3abda 3653}
9664d928 3654
05390248 3655static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
b6d3abda 3656{
9664d928
EI		 3657 __get_user(env->regs[0], &sc->regs.r0);
3658 __get_user(env->regs[1], &sc->regs.r1);
3659 __get_user(env->regs[2], &sc->regs.r2);
3660 __get_user(env->regs[3], &sc->regs.r3);
3661 __get_user(env->regs[4], &sc->regs.r4);
3662 __get_user(env->regs[5], &sc->regs.r5);
3663 __get_user(env->regs[6], &sc->regs.r6);
3664 __get_user(env->regs[7], &sc->regs.r7);
3665 __get_user(env->regs[8], &sc->regs.r8);
3666 __get_user(env->regs[9], &sc->regs.r9);
3667 __get_user(env->regs[10], &sc->regs.r10);
3668 __get_user(env->regs[11], &sc->regs.r11);
3669 __get_user(env->regs[12], &sc->regs.r12);
3670 __get_user(env->regs[13], &sc->regs.r13);
3671 __get_user(env->regs[14], &sc->usp);
3672 __get_user(env->regs[15], &sc->regs.acr);
3673 __get_user(env->pregs[PR_MOF], &sc->regs.mof);
3674 __get_user(env->pregs[PR_SRP], &sc->regs.srp);
3675 __get_user(env->pc, &sc->regs.erp);
3676}
3677
05390248 3678static abi_ulong get_sigframe(CPUCRISState *env, int framesize)
9664d928
EI		 3679{
3680 abi_ulong sp;
b6d3abda 3681 /* Align the stack downwards to 4. */
9664d928
EI		 3682 sp = (env->regs[R_SP] & ~3);
3683 return sp - framesize;
b6d3abda
EI		 3684}
3685
624f7979 3686static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3687 target_sigset_t *set, CPUCRISState *env)
b6d3abda
EI		 3688{
3689 struct target_signal_frame *frame;
9664d928 3690 abi_ulong frame_addr;
b6d3abda 3691 int i;
b6d3abda 3692
9664d928 3693 frame_addr = get_sigframe(env, sizeof *frame);
c8ee0a44 3694 trace_user_setup_frame(env, frame_addr);
9664d928 3695 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
b6d3abda
EI		 3696 goto badframe;
3697
3698 /*
3699 * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
3700 * use this trampoline anymore but it sets it up for GDB.
3701 * In QEMU, using the trampoline simplifies things a bit so we use it.
3702 *
3703 * This is movu.w __NR_sigreturn, r9; break 13;
3704 */
1d8b512b
RV		 3705 __put_user(0x9c5f, frame->retcode+0);
3706 __put_user(TARGET_NR_sigreturn,
3707 frame->retcode + 1);
3708 __put_user(0xe93d, frame->retcode + 2);
b6d3abda
EI		 3709
3710 /* Save the mask. */
1d8b512b 3711 __put_user(set->sig[0], &frame->sc.oldmask);
b6d3abda 3712
0188fadb
RV		 3713 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
3714 __put_user(set->sig[i], &frame->extramask[i - 1]);
3715 }
b6d3abda
EI		 3716
3717 setup_sigcontext(&frame->sc, env);
3718
3719 /* Move the stack and setup the arguments for the handler. */
cb9c6268 3720 env->regs[R_SP] = frame_addr;
b6d3abda 3721 env->regs[10] = sig;
624f7979 3722 env->pc = (unsigned long) ka->_sa_handler;
b6d3abda 3723 /* Link SRP so the guest returns through the trampoline. */
cb9c6268 3724 env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode);
b6d3abda 3725
9664d928 3726 unlock_user_struct(frame, frame_addr, 1);
b6d3abda
EI		 3727 return;
3728 badframe:
b6d3abda
EI		 3729 force_sig(TARGET_SIGSEGV);
3730}
3731
624f7979 3732static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3733 target_siginfo_t *info,
05390248 3734 target_sigset_t *set, CPUCRISState *env)
b6d3abda
EI		 3735{
3736 fprintf(stderr, "CRIS setup_rt_frame: not implemented\n");
3737}
3738
05390248 3739long do_sigreturn(CPUCRISState *env)
b6d3abda
EI		 3740{
3741 struct target_signal_frame *frame;
9664d928 3742 abi_ulong frame_addr;
c227f099 3743 target_sigset_t target_set;
b6d3abda
EI		 3744 sigset_t set;
3745 int i;
3746
9664d928 3747 frame_addr = env->regs[R_SP];
c8ee0a44 3748 trace_user_do_sigreturn(env, frame_addr);
b6d3abda 3749 /* Make sure the guest isn't playing games. */
9664d928 3750 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
b6d3abda
EI		 3751 goto badframe;
3752
3753 /* Restore blocked signals */
f5f601af 3754 __get_user(target_set.sig[0], &frame->sc.oldmask);
b6d3abda 3755 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
f5f601af 3756 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
b6d3abda
EI		 3757 }
3758 target_to_host_sigset_internal(&set, &target_set);
1c275925 3759 do_sigprocmask(SIG_SETMASK, &set, NULL);
b6d3abda
EI		 3760
3761 restore_sigcontext(&frame->sc, env);
9664d928 3762 unlock_user_struct(frame, frame_addr, 0);
b6d3abda
EI		 3763 return env->regs[10];
3764 badframe:
b6d3abda
EI		 3765 force_sig(TARGET_SIGSEGV);
3766}
3767
05390248 3768long do_rt_sigreturn(CPUCRISState *env)
b6d3abda 3769{
c8ee0a44 3770 trace_user_do_rt_sigreturn(env, 0);
b6d3abda
EI		 3771 fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n");
3772 return -TARGET_ENOSYS;
3773}
c3b5bc8a 3774
d962783e
JL		 3775#elif defined(TARGET_OPENRISC)
3776
3777struct target_sigcontext {
3778 struct target_pt_regs regs;
3779 abi_ulong oldmask;
3780 abi_ulong usp;
3781};
3782
3783struct target_ucontext {
3784 abi_ulong tuc_flags;
3785 abi_ulong tuc_link;
3786 target_stack_t tuc_stack;
3787 struct target_sigcontext tuc_mcontext;
3788 target_sigset_t tuc_sigmask; /* mask last for extensibility */
3789};
3790
3791struct target_rt_sigframe {
3792 abi_ulong pinfo;
3793 uint64_t puc;
3794 struct target_siginfo info;
3795 struct target_sigcontext sc;
3796 struct target_ucontext uc;
3797 unsigned char retcode[16]; /* trampoline code */
3798};
3799
3800/* This is the asm-generic/ucontext.h version */
3801#if 0
3802static int restore_sigcontext(CPUOpenRISCState *regs,
3803 struct target_sigcontext *sc)
3804{
3805 unsigned int err = 0;
3806 unsigned long old_usp;
3807
3808 /* Alwys make any pending restarted system call return -EINTR */
3809 current_thread_info()->restart_block.fn = do_no_restart_syscall;
3810
3811 /* restore the regs from &sc->regs (same as sc, since regs is first)
3812 * (sc is already checked for VERIFY_READ since the sigframe was
3813 * checked in sys_sigreturn previously)
3814 */
3815
3816 if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) {
3817 goto badframe;
3818 }
3819
3820 /* make sure the U-flag is set so user-mode cannot fool us */
3821
3822 regs->sr &= ~SR_SM;
3823
3824 /* restore the old USP as it was before we stacked the sc etc.
3825 * (we cannot just pop the sigcontext since we aligned the sp and
3826 * stuff after pushing it)
3827 */
3828
1d8b512b 3829 __get_user(old_usp, &sc->usp);
d962783e
JL		 3830 phx_signal("old_usp 0x%lx", old_usp);
3831
3832 __PHX__ REALLY /* ??? */
3833 wrusp(old_usp);
3834 regs->gpr[1] = old_usp;
3835
3836 /* TODO: the other ports use regs->orig_XX to disable syscall checks
3837 * after this completes, but we don't use that mechanism. maybe we can
3838 * use it now ?
3839 */
3840
3841 return err;
3842
3843badframe:
3844 return 1;
3845}
3846#endif
3847
3848/* Set up a signal frame. */
3849
41ecc72b 3850static void setup_sigcontext(struct target_sigcontext *sc,
d962783e
JL		 3851 CPUOpenRISCState *regs,
3852 unsigned long mask)
3853{
d962783e
JL		 3854 unsigned long usp = regs->gpr[1];
3855
3856 /* copy the regs. they are first in sc so we can use sc directly */
3857
1d8b512b 3858 /*copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/
d962783e
JL		 3859
3860 /* Set the frametype to CRIS_FRAME_NORMAL for the execution of
3861 the signal handler. The frametype will be restored to its previous
3862 value in restore_sigcontext. */
3863 /*regs->frametype = CRIS_FRAME_NORMAL;*/
3864
3865 /* then some other stuff */
1d8b512b 3866 __put_user(mask, &sc->oldmask);
41ecc72b 3867 __put_user(usp, &sc->usp);
d962783e
JL		 3868}
3869
3870static inline unsigned long align_sigframe(unsigned long sp)
3871{
3872 unsigned long i;
3873 i = sp & ~3UL;
3874 return i;
3875}
3876
3877static inline abi_ulong get_sigframe(struct target_sigaction *ka,
3878 CPUOpenRISCState *regs,
3879 size_t frame_size)
3880{
3881 unsigned long sp = regs->gpr[1];
3882 int onsigstack = on_sig_stack(sp);
3883
3884 /* redzone */
3885 /* This is the X/Open sanctioned signal stack switching. */
b545f63f 3886 if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !onsigstack) {
d962783e
JL		 3887 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
3888 }
3889
3890 sp = align_sigframe(sp - frame_size);
3891
3892 /*
3893 * If we are on the alternate signal stack and would overflow it, don't.
3894 * Return an always-bogus address instead so we will die with SIGSEGV.
3895 */
3896
3897 if (onsigstack && !likely(on_sig_stack(sp))) {
3898 return -1L;
3899 }
3900
3901 return sp;
3902}
3903
d962783e
JL		 3904static void setup_rt_frame(int sig, struct target_sigaction *ka,
3905 target_siginfo_t *info,
3906 target_sigset_t *set, CPUOpenRISCState *env)
3907{
3908 int err = 0;
3909 abi_ulong frame_addr;
3910 unsigned long return_ip;
3911 struct target_rt_sigframe *frame;
3912 abi_ulong info_addr, uc_addr;
3913
d962783e 3914 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 3915 trace_user_setup_rt_frame(env, frame_addr);
d962783e
JL		 3916 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
3917 goto give_sigsegv;
3918 }
3919
3920 info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
1d8b512b 3921 __put_user(info_addr, &frame->pinfo);
d962783e 3922 uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
1d8b512b 3923 __put_user(uc_addr, &frame->puc);
d962783e
JL		 3924
3925 if (ka->sa_flags & SA_SIGINFO) {
f6c7a05b 3926 tswap_siginfo(&frame->info, info);
d962783e
JL		 3927 }
3928
3929 /*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/
1d8b512b
RV		 3930 __put_user(0, &frame->uc.tuc_flags);
3931 __put_user(0, &frame->uc.tuc_link);
3932 __put_user(target_sigaltstack_used.ss_sp,
3933 &frame->uc.tuc_stack.ss_sp);
3934 __put_user(sas_ss_flags(env->gpr[1]), &frame->uc.tuc_stack.ss_flags);
3935 __put_user(target_sigaltstack_used.ss_size,
3936 &frame->uc.tuc_stack.ss_size);
41ecc72b 3937 setup_sigcontext(&frame->sc, env, set->sig[0]);
d962783e
JL		 3938
3939 /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/
3940
d962783e
JL		 3941 /* trampoline - the desired return ip is the retcode itself */
3942 return_ip = (unsigned long)&frame->retcode;
3943 /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */
1d8b512b
RV		 3944 __put_user(0xa960, (short *)(frame->retcode + 0));
3945 __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2));
3946 __put_user(0x20000001, (unsigned long *)(frame->retcode + 4));
3947 __put_user(0x15000000, (unsigned long *)(frame->retcode + 8));
d962783e
JL		 3948
3949 if (err) {
3950 goto give_sigsegv;
3951 }
3952
3953 /* TODO what is the current->exec_domain stuff and invmap ? */
3954
3955 /* Set up registers for signal handler */
3956 env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */
3957 env->gpr[9] = (unsigned long)return_ip; /* what we enter LATER */
3958 env->gpr[3] = (unsigned long)sig; /* arg 1: signo */
3959 env->gpr[4] = (unsigned long)&frame->info; /* arg 2: (siginfo_t*) */
3960 env->gpr[5] = (unsigned long)&frame->uc; /* arg 3: ucontext */
3961
3962 /* actually move the usp to reflect the stacked frame */
3963 env->gpr[1] = (unsigned long)frame;
3964
3965 return;
3966
3967give_sigsegv:
3968 unlock_user_struct(frame, frame_addr, 1);
3969 if (sig == TARGET_SIGSEGV) {
3970 ka->_sa_handler = TARGET_SIG_DFL;
3971 }
3972 force_sig(TARGET_SIGSEGV);
3973}
3974
3975long do_sigreturn(CPUOpenRISCState *env)
3976{
c8ee0a44
PB		 3977 trace_user_do_sigreturn(env, 0);
3978 fprintf(stderr, "do_sigreturn: not implemented\n");
d962783e
JL		 3979 return -TARGET_ENOSYS;
3980}
3981
3982long do_rt_sigreturn(CPUOpenRISCState *env)
3983{
c8ee0a44
PB		 3984 trace_user_do_rt_sigreturn(env, 0);
3985 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
d962783e
JL		 3986 return -TARGET_ENOSYS;
3987}
3988/* TARGET_OPENRISC */
3989
a4c075f1
UH		 3990#elif defined(TARGET_S390X)
3991
3992#define __NUM_GPRS 16
3993#define __NUM_FPRS 16
3994#define __NUM_ACRS 16
3995
3996#define S390_SYSCALL_SIZE 2
3997#define __SIGNAL_FRAMESIZE 160 /* FIXME: 31-bit mode -> 96 */
3998
3999#define _SIGCONTEXT_NSIG 64
4000#define _SIGCONTEXT_NSIG_BPW 64 /* FIXME: 31-bit mode -> 32 */
4001#define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW)
4002#define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS)
4003#define PSW_ADDR_AMODE 0x0000000000000000UL /* 0x80000000UL for 31-bit */
4004#define S390_SYSCALL_OPCODE ((uint16_t)0x0a00)
4005
4006typedef struct {
4007 target_psw_t psw;
4008 target_ulong gprs[__NUM_GPRS];
4009 unsigned int acrs[__NUM_ACRS];
4010} target_s390_regs_common;
4011
4012typedef struct {
4013 unsigned int fpc;
4014 double fprs[__NUM_FPRS];
4015} target_s390_fp_regs;
4016
4017typedef struct {
4018 target_s390_regs_common regs;
4019 target_s390_fp_regs fpregs;
4020} target_sigregs;
4021
4022struct target_sigcontext {
4023 target_ulong oldmask[_SIGCONTEXT_NSIG_WORDS];
4024 target_sigregs *sregs;
4025};
4026
4027typedef struct {
4028 uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
4029 struct target_sigcontext sc;
4030 target_sigregs sregs;
4031 int signo;
4032 uint8_t retcode[S390_SYSCALL_SIZE];
4033} sigframe;
4034
4035struct target_ucontext {
6fea2ea4
PM		 4036 target_ulong tuc_flags;
4037 struct target_ucontext *tuc_link;
4038 target_stack_t tuc_stack;
4039 target_sigregs tuc_mcontext;
4040 target_sigset_t tuc_sigmask; /* mask last for extensibility */
a4c075f1
UH		 4041};
4042
4043typedef struct {
4044 uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
4045 uint8_t retcode[S390_SYSCALL_SIZE];
4046 struct target_siginfo info;
4047 struct target_ucontext uc;
4048} rt_sigframe;
4049
4050static inline abi_ulong
05390248 4051get_sigframe(struct target_sigaction *ka, CPUS390XState *env, size_t frame_size)
a4c075f1
UH		 4052{
4053 abi_ulong sp;
4054
4055 /* Default to using normal stack */
4056 sp = env->regs[15];
4057
4058 /* This is the X/Open sanctioned signal stack switching. */
4059 if (ka->sa_flags & TARGET_SA_ONSTACK) {
4060 if (!sas_ss_flags(sp)) {
4061 sp = target_sigaltstack_used.ss_sp +
4062 target_sigaltstack_used.ss_size;
4063 }
4064 }
4065
4066 /* This is the legacy signal stack switching. */
4067 else if (/* FIXME !user_mode(regs) */ 0 &&
4068 !(ka->sa_flags & TARGET_SA_RESTORER) &&
4069 ka->sa_restorer) {
4070 sp = (abi_ulong) ka->sa_restorer;
4071 }
4072
4073 return (sp - frame_size) & -8ul;
4074}
4075
05390248 4076static void save_sigregs(CPUS390XState *env, target_sigregs *sregs)
a4c075f1
UH		 4077{
4078 int i;
4079 //save_access_regs(current->thread.acrs); FIXME
4080
4081 /* Copy a 'clean' PSW mask to the user to avoid leaking
4082 information about whether PER is currently on. */
4083 __put_user(env->psw.mask, &sregs->regs.psw.mask);
4084 __put_user(env->psw.addr, &sregs->regs.psw.addr);
4085 for (i = 0; i < 16; i++) {
4086 __put_user(env->regs[i], &sregs->regs.gprs[i]);
4087 }
4088 for (i = 0; i < 16; i++) {
4089 __put_user(env->aregs[i], &sregs->regs.acrs[i]);
4090 }
4091 /*
4092 * We have to store the fp registers to current->thread.fp_regs
4093 * to merge them with the emulated registers.
4094 */
4095 //save_fp_regs(&current->thread.fp_regs); FIXME
4096 for (i = 0; i < 16; i++) {
c498d8e3 4097 __put_user(get_freg(env, i)->ll, &sregs->fpregs.fprs[i]);
a4c075f1
UH		 4098 }
4099}
4100
4101static void setup_frame(int sig, struct target_sigaction *ka,
05390248 4102 target_sigset_t *set, CPUS390XState *env)
a4c075f1
UH		 4103{
4104 sigframe *frame;
4105 abi_ulong frame_addr;
4106
4107 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 4108 trace_user_setup_frame(env, frame_addr);
a4c075f1
UH		 4109 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
4110 goto give_sigsegv;
4111 }
4112
0188fadb 4113 __put_user(set->sig[0], &frame->sc.oldmask[0]);
a4c075f1
UH		 4114
4115 save_sigregs(env, &frame->sregs);
4116
4117 __put_user((abi_ulong)(unsigned long)&frame->sregs,
4118 (abi_ulong *)&frame->sc.sregs);
4119
4120 /* Set up to return from userspace. If provided, use a stub
4121 already in userspace. */
4122 if (ka->sa_flags & TARGET_SA_RESTORER) {
4123 env->regs[14] = (unsigned long)
4124 ka->sa_restorer | PSW_ADDR_AMODE;
4125 } else {
4126 env->regs[14] = (unsigned long)
4127 frame->retcode | PSW_ADDR_AMODE;
0188fadb
RV		 4128 __put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn,
4129 (uint16_t *)(frame->retcode));
a4c075f1
UH		 4130 }
4131
4132 /* Set up backchain. */
0188fadb 4133 __put_user(env->regs[15], (abi_ulong *) frame);
a4c075f1
UH		 4134
4135 /* Set up registers for signal handler */
cb9c6268 4136 env->regs[15] = frame_addr;
a4c075f1
UH		 4137 env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
4138
4139 env->regs[2] = sig; //map_signal(sig);
cb9c6268 4140 env->regs[3] = frame_addr += offsetof(typeof(*frame), sc);
a4c075f1
UH		 4141
4142 /* We forgot to include these in the sigcontext.
4143 To avoid breaking binary compatibility, they are passed as args. */
4144 env->regs[4] = 0; // FIXME: no clue... current->thread.trap_no;
4145 env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr;
4146
4147 /* Place signal number on stack to allow backtrace from handler. */
0188fadb 4148 __put_user(env->regs[2], (int *) &frame->signo);
a4c075f1
UH		 4149 unlock_user_struct(frame, frame_addr, 1);
4150 return;
4151
4152give_sigsegv:
a4c075f1
UH		 4153 force_sig(TARGET_SIGSEGV);
4154}
4155
4156static void setup_rt_frame(int sig, struct target_sigaction *ka,
4157 target_siginfo_t *info,
05390248 4158 target_sigset_t *set, CPUS390XState *env)
a4c075f1
UH		 4159{
4160 int i;
4161 rt_sigframe *frame;
4162 abi_ulong frame_addr;
4163
4164 frame_addr = get_sigframe(ka, env, sizeof *frame);
c8ee0a44 4165 trace_user_setup_rt_frame(env, frame_addr);
a4c075f1
UH		 4166 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
4167 goto give_sigsegv;
4168 }
4169
f6c7a05b 4170 tswap_siginfo(&frame->info, info);
a4c075f1
UH		 4171
4172 /* Create the ucontext. */
6fea2ea4
PM		 4173 __put_user(0, &frame->uc.tuc_flags);
4174 __put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link);
4175 __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
a4c075f1 4176 __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
6fea2ea4
PM		 4177 &frame->uc.tuc_stack.ss_flags);
4178 __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
4179 save_sigregs(env, &frame->uc.tuc_mcontext);
a4c075f1
UH		 4180 for (i = 0; i < TARGET_NSIG_WORDS; i++) {
4181 __put_user((abi_ulong)set->sig[i],
6fea2ea4 4182 (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
a4c075f1
UH		 4183 }
4184
4185 /* Set up to return from userspace. If provided, use a stub
4186 already in userspace. */
4187 if (ka->sa_flags & TARGET_SA_RESTORER) {
4188 env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE;
4189 } else {
4190 env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE;
0188fadb
RV		 4191 __put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn,
4192 (uint16_t *)(frame->retcode));
a4c075f1
UH		 4193 }
4194
4195 /* Set up backchain. */
0188fadb 4196 __put_user(env->regs[15], (abi_ulong *) frame);
a4c075f1
UH		 4197
4198 /* Set up registers for signal handler */
cb9c6268 4199 env->regs[15] = frame_addr;
a4c075f1
UH		 4200 env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
4201
4202 env->regs[2] = sig; //map_signal(sig);
cb9c6268
EI		 4203 env->regs[3] = frame_addr + offsetof(typeof(*frame), info);
4204 env->regs[4] = frame_addr + offsetof(typeof(*frame), uc);
a4c075f1
UH		 4205 return;
4206
4207give_sigsegv:
a4c075f1
UH		 4208 force_sig(TARGET_SIGSEGV);
4209}
4210
4211static int
05390248 4212restore_sigregs(CPUS390XState *env, target_sigregs *sc)
a4c075f1
UH		 4213{
4214 int err = 0;
4215 int i;
4216
4217 for (i = 0; i < 16; i++) {
1d8b512b 4218 __get_user(env->regs[i], &sc->regs.gprs[i]);
a4c075f1
UH		 4219 }
4220
1d8b512b 4221 __get_user(env->psw.mask, &sc->regs.psw.mask);
c8ee0a44
PB		 4222 trace_user_s390x_restore_sigregs(env, (unsigned long long)sc->regs.psw.addr,
4223 (unsigned long long)env->psw.addr);
1d8b512b 4224 __get_user(env->psw.addr, &sc->regs.psw.addr);
a4c075f1
UH		 4225 /* FIXME: 31-bit -> | PSW_ADDR_AMODE */
4226
4227 for (i = 0; i < 16; i++) {
1d8b512b 4228 __get_user(env->aregs[i], &sc->regs.acrs[i]);
a4c075f1
UH		 4229 }
4230 for (i = 0; i < 16; i++) {
c498d8e3 4231 __get_user(get_freg(env, i)->ll, &sc->fpregs.fprs[i]);
a4c075f1
UH		 4232 }
4233
4234 return err;
4235}
4236
05390248 4237long do_sigreturn(CPUS390XState *env)
a4c075f1
UH		 4238{
4239 sigframe *frame;
4240 abi_ulong frame_addr = env->regs[15];
a4c075f1
UH		 4241 target_sigset_t target_set;
4242 sigset_t set;
4243
c8ee0a44 4244 trace_user_do_sigreturn(env, frame_addr);
a4c075f1
UH		 4245 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
4246 goto badframe;
4247 }
f5f601af 4248 __get_user(target_set.sig[0], &frame->sc.oldmask[0]);
a4c075f1
UH		 4249
4250 target_to_host_sigset_internal(&set, &target_set);
1c275925 4251 do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */
a4c075f1
UH		 4252
4253 if (restore_sigregs(env, &frame->sregs)) {
4254 goto badframe;
4255 }
4256
4257 unlock_user_struct(frame, frame_addr, 0);
4258 return env->regs[2];
4259
4260badframe:
a4c075f1
UH		 4261 force_sig(TARGET_SIGSEGV);
4262 return 0;
4263}
4264
05390248 4265long do_rt_sigreturn(CPUS390XState *env)
a4c075f1
UH		 4266{
4267 rt_sigframe *frame;
4268 abi_ulong frame_addr = env->regs[15];
a4c075f1
UH		 4269 sigset_t set;
4270
c8ee0a44 4271 trace_user_do_rt_sigreturn(env, frame_addr);
a4c075f1
UH		 4272 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
4273 goto badframe;
4274 }
6fea2ea4 4275 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
a4c075f1 4276
1c275925 4277 do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */
a4c075f1 4278
6fea2ea4 4279 if (restore_sigregs(env, &frame->uc.tuc_mcontext)) {
a4c075f1
UH		 4280 goto badframe;
4281 }
4282
6fea2ea4 4283 if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0,
a4c075f1
UH		 4284 get_sp_from_cpustate(env)) == -EFAULT) {
4285 goto badframe;
4286 }
4287 unlock_user_struct(frame, frame_addr, 0);
4288 return env->regs[2];
4289
4290badframe:
4291 unlock_user_struct(frame, frame_addr, 0);
4292 force_sig(TARGET_SIGSEGV);
4293 return 0;
4294}
4295
61e75fec 4296#elif defined(TARGET_PPC)
bcd4933a
NF		 4297
4298/* Size of dummy stack frame allocated when calling signal handler.
4299 See arch/powerpc/include/asm/ptrace.h. */
4300#if defined(TARGET_PPC64)
4301#define SIGNAL_FRAMESIZE 128
4302#else
4303#define SIGNAL_FRAMESIZE 64
4304#endif
4305
61e75fec
TM		 4306/* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC;
4307 on 64-bit PPC, sigcontext and mcontext are one and the same. */
4308struct target_mcontext {
4309 target_ulong mc_gregs[48];
4310 /* Includes fpscr. */
4311 uint64_t mc_fregs[33];
4312 target_ulong mc_pad[2];
4313 /* We need to handle Altivec and SPE at the same time, which no
4314 kernel needs to do. Fortunately, the kernel defines this bit to
4315 be Altivec-register-large all the time, rather than trying to
4316 twiddle it based on the specific platform. */
4317 union {
4318 /* SPE vector registers. One extra for SPEFSCR. */
4319 uint32_t spe[33];
4320 /* Altivec vector registers. The packing of VSCR and VRSAVE
4321 varies depending on whether we're PPC64 or not: PPC64 splits
4322 them apart; PPC32 stuffs them together. */
4323#if defined(TARGET_PPC64)
4324#define QEMU_NVRREG 34
4325#else
4326#define QEMU_NVRREG 33
4327#endif
4328 ppc_avr_t altivec[QEMU_NVRREG];
4329#undef QEMU_NVRREG
4330 } mc_vregs __attribute__((__aligned__(16)));
4331};
4332
bcd4933a
NF		 4333/* See arch/powerpc/include/asm/sigcontext.h. */
4334struct target_sigcontext {
4335 target_ulong _unused[4];
4336 int32_t signal;
4337#if defined(TARGET_PPC64)
4338 int32_t pad0;
4339#endif
4340 target_ulong handler;
4341 target_ulong oldmask;
4342 target_ulong regs; /* struct pt_regs __user * */
61e75fec
TM		 4343#if defined(TARGET_PPC64)
4344 struct target_mcontext mcontext;
4345#endif
bcd4933a
NF		 4346};
4347
4348/* Indices for target_mcontext.mc_gregs, below.
4349 See arch/powerpc/include/asm/ptrace.h for details. */
4350enum {
4351 TARGET_PT_R0 = 0,
4352 TARGET_PT_R1 = 1,
4353 TARGET_PT_R2 = 2,
4354 TARGET_PT_R3 = 3,
4355 TARGET_PT_R4 = 4,
4356 TARGET_PT_R5 = 5,
4357 TARGET_PT_R6 = 6,
4358 TARGET_PT_R7 = 7,
4359 TARGET_PT_R8 = 8,
4360 TARGET_PT_R9 = 9,
4361 TARGET_PT_R10 = 10,
4362 TARGET_PT_R11 = 11,
4363 TARGET_PT_R12 = 12,
4364 TARGET_PT_R13 = 13,
4365 TARGET_PT_R14 = 14,
4366 TARGET_PT_R15 = 15,
4367 TARGET_PT_R16 = 16,
4368 TARGET_PT_R17 = 17,
4369 TARGET_PT_R18 = 18,
4370 TARGET_PT_R19 = 19,
4371 TARGET_PT_R20 = 20,
4372 TARGET_PT_R21 = 21,
4373 TARGET_PT_R22 = 22,
4374 TARGET_PT_R23 = 23,
4375 TARGET_PT_R24 = 24,
4376 TARGET_PT_R25 = 25,
4377 TARGET_PT_R26 = 26,
4378 TARGET_PT_R27 = 27,
4379 TARGET_PT_R28 = 28,
4380 TARGET_PT_R29 = 29,
4381 TARGET_PT_R30 = 30,
4382 TARGET_PT_R31 = 31,
4383 TARGET_PT_NIP = 32,
4384 TARGET_PT_MSR = 33,
4385 TARGET_PT_ORIG_R3 = 34,
4386 TARGET_PT_CTR = 35,
4387 TARGET_PT_LNK = 36,
4388 TARGET_PT_XER = 37,
4389 TARGET_PT_CCR = 38,
4390 /* Yes, there are two registers with #39. One is 64-bit only. */
4391 TARGET_PT_MQ = 39,
4392 TARGET_PT_SOFTE = 39,
4393 TARGET_PT_TRAP = 40,
4394 TARGET_PT_DAR = 41,
4395 TARGET_PT_DSISR = 42,
4396 TARGET_PT_RESULT = 43,
4397 TARGET_PT_REGS_COUNT = 44
4398};
4399
bcd4933a
NF		 4400
4401struct target_ucontext {
60e99246
AJ		 4402 target_ulong tuc_flags;
4403 target_ulong tuc_link; /* struct ucontext __user * */
4404 struct target_sigaltstack tuc_stack;
bcd4933a 4405#if !defined(TARGET_PPC64)
60e99246
AJ		 4406 int32_t tuc_pad[7];
4407 target_ulong tuc_regs; /* struct mcontext __user *
bcd4933a
NF		 4408 points to uc_mcontext field */
4409#endif
60e99246 4410 target_sigset_t tuc_sigmask;
bcd4933a 4411#if defined(TARGET_PPC64)
c227f099 4412 target_sigset_t unused[15]; /* Allow for uc_sigmask growth */
61e75fec 4413 struct target_sigcontext tuc_sigcontext;
bcd4933a 4414#else
60e99246
AJ		 4415 int32_t tuc_maskext[30];
4416 int32_t tuc_pad2[3];
4417 struct target_mcontext tuc_mcontext;
bcd4933a
NF		 4418#endif
4419};
4420
4421/* See arch/powerpc/kernel/signal_32.c. */
4422struct target_sigframe {
4423 struct target_sigcontext sctx;
4424 struct target_mcontext mctx;
4425 int32_t abigap[56];
4426};
4427
61e75fec
TM		 4428#if defined(TARGET_PPC64)
4429
4430#define TARGET_TRAMP_SIZE 6
4431
4432struct target_rt_sigframe {
4433 /* sys_rt_sigreturn requires the ucontext be the first field */
4434 struct target_ucontext uc;
4435 target_ulong _unused[2];
4436 uint32_t trampoline[TARGET_TRAMP_SIZE];
4437 target_ulong pinfo; /* struct siginfo __user * */
4438 target_ulong puc; /* void __user * */
4439 struct target_siginfo info;
4440 /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
4441 char abigap[288];
4442} __attribute__((aligned(16)));
4443
4444#else
4445
bcd4933a
NF		 4446struct target_rt_sigframe {
4447 struct target_siginfo info;
4448 struct target_ucontext uc;
4449 int32_t abigap[56];
4450};
4451
61e75fec
TM		 4452#endif
4453
8d6ab333
TM		 4454#if defined(TARGET_PPC64)
4455
4456struct target_func_ptr {
4457 target_ulong entry;
4458 target_ulong toc;
4459};
4460
4461#endif
4462
bcd4933a
NF		 4463/* We use the mc_pad field for the signal return trampoline. */
4464#define tramp mc_pad
4465
4466/* See arch/powerpc/kernel/signal.c. */
4467static target_ulong get_sigframe(struct target_sigaction *ka,
05390248 4468 CPUPPCState *env,
bcd4933a
NF		 4469 int frame_size)
4470{
4471 target_ulong oldsp, newsp;
4472
4473 oldsp = env->gpr[1];
4474
4475 if ((ka->sa_flags & TARGET_SA_ONSTACK) &&
32a2003a 4476 (sas_ss_flags(oldsp) == 0)) {
bcd4933a
NF		 4477 oldsp = (target_sigaltstack_used.ss_sp
4478 + target_sigaltstack_used.ss_size);
4479 }
4480
4481 newsp = (oldsp - frame_size) & ~0xFUL;
4482
4483 return newsp;
4484}
4485
7678108b 4486static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame)
bcd4933a
NF		 4487{
4488 target_ulong msr = env->msr;
4489 int i;
4490 target_ulong ccr = 0;
4491
4492 /* In general, the kernel attempts to be intelligent about what it
4493 needs to save for Altivec/FP/SPE registers. We don't care that
4494 much, so we just go ahead and save everything. */
4495
4496 /* Save general registers. */
4497 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
c650c008 4498 __put_user(env->gpr[i], &frame->mc_gregs[i]);
bcd4933a 4499 }
c650c008
RV		 4500 __put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
4501 __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
4502 __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
4503 __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]);
bcd4933a
NF		 4504
4505 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
4506 ccr |= env->crf[i] << (32 - ((i + 1) * 4));
4507 }
c650c008 4508 __put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
bcd4933a
NF		 4509
4510 /* Save Altivec registers if necessary. */
4511 if (env->insns_flags & PPC_ALTIVEC) {
4512 for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
c227f099
AL		 4513 ppc_avr_t *avr = &env->avr[i];
4514 ppc_avr_t *vreg = &frame->mc_vregs.altivec[i];
bcd4933a 4515
c650c008
RV		 4516 __put_user(avr->u64[0], &vreg->u64[0]);
4517 __put_user(avr->u64[1], &vreg->u64[1]);
bcd4933a
NF		 4518 }
4519 /* Set MSR_VR in the saved MSR value to indicate that
4520 frame->mc_vregs contains valid data. */
4521 msr |= MSR_VR;
c650c008
RV		 4522 __put_user((uint32_t)env->spr[SPR_VRSAVE],
4523 &frame->mc_vregs.altivec[32].u32[3]);
bcd4933a
NF		 4524 }
4525
4526 /* Save floating point registers. */
4527 if (env->insns_flags & PPC_FLOAT) {
4528 for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
c650c008 4529 __put_user(env->fpr[i], &frame->mc_fregs[i]);
bcd4933a 4530 }
c650c008 4531 __put_user((uint64_t) env->fpscr, &frame->mc_fregs[32]);
bcd4933a
NF		 4532 }
4533
4534 /* Save SPE registers. The kernel only saves the high half. */
4535 if (env->insns_flags & PPC_SPE) {
4536#if defined(TARGET_PPC64)
4537 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
c650c008 4538 __put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i]);
bcd4933a
NF		 4539 }
4540#else
4541 for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
c650c008 4542 __put_user(env->gprh[i], &frame->mc_vregs.spe[i]);
bcd4933a
NF		 4543 }
4544#endif
4545 /* Set MSR_SPE in the saved MSR value to indicate that
4546 frame->mc_vregs contains valid data. */
4547 msr |= MSR_SPE;
c650c008 4548 __put_user(env->spe_fscr, &frame->mc_vregs.spe[32]);
bcd4933a
NF		 4549 }
4550
4551 /* Store MSR. */
c650c008 4552 __put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
7678108b 4553}
bcd4933a 4554
7678108b
TM		 4555static void encode_trampoline(int sigret, uint32_t *tramp)
4556{
bcd4933a
NF		 4557 /* Set up the sigreturn trampoline: li r0,sigret; sc. */
4558 if (sigret) {
7678108b
TM		 4559 __put_user(0x38000000 | sigret, &tramp[0]);
4560 __put_user(0x44000002, &tramp[1]);
bcd4933a 4561 }
bcd4933a
NF		 4562}
4563
c650c008
RV		 4564static void restore_user_regs(CPUPPCState *env,
4565 struct target_mcontext *frame, int sig)
bcd4933a
NF		 4566{
4567 target_ulong save_r2 = 0;
4568 target_ulong msr;
4569 target_ulong ccr;
4570
4571 int i;
4572
4573 if (!sig) {
4574 save_r2 = env->gpr[2];
4575 }
4576
4577 /* Restore general registers. */
4578 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
c650c008 4579 __get_user(env->gpr[i], &frame->mc_gregs[i]);
bcd4933a 4580 }
c650c008
RV		 4581 __get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
4582 __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
4583 __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
4584 __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]);
4585 __get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
bcd4933a
NF		 4586
4587 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
4588 env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf;
4589 }
4590
4591 if (!sig) {
4592 env->gpr[2] = save_r2;
4593 }
4594 /* Restore MSR. */
c650c008 4595 __get_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
bcd4933a
NF		 4596
4597 /* If doing signal return, restore the previous little-endian mode. */
4598 if (sig)
4599 env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE);
4600
4601 /* Restore Altivec registers if necessary. */
4602 if (env->insns_flags & PPC_ALTIVEC) {
4603 for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
c227f099
AL		 4604 ppc_avr_t *avr = &env->avr[i];
4605 ppc_avr_t *vreg = &frame->mc_vregs.altivec[i];
bcd4933a 4606
c650c008
RV		 4607 __get_user(avr->u64[0], &vreg->u64[0]);
4608 __get_user(avr->u64[1], &vreg->u64[1]);
bcd4933a
NF		 4609 }
4610 /* Set MSR_VEC in the saved MSR value to indicate that
4611 frame->mc_vregs contains valid data. */
c650c008
RV		 4612 __get_user(env->spr[SPR_VRSAVE],
4613 (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3]));
bcd4933a
NF		 4614 }
4615
4616 /* Restore floating point registers. */
4617 if (env->insns_flags & PPC_FLOAT) {
4618 uint64_t fpscr;
4619 for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
c650c008 4620 __get_user(env->fpr[i], &frame->mc_fregs[i]);
bcd4933a 4621 }
c650c008 4622 __get_user(fpscr, &frame->mc_fregs[32]);
bcd4933a
NF		 4623 env->fpscr = (uint32_t) fpscr;
4624 }
4625
4626 /* Save SPE registers. The kernel only saves the high half. */
4627 if (env->insns_flags & PPC_SPE) {
4628#if defined(TARGET_PPC64)
4629 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
4630 uint32_t hi;
4631
c650c008 4632 __get_user(hi, &frame->mc_vregs.spe[i]);
bcd4933a
NF		 4633 env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]);
4634 }
4635#else
4636 for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
c650c008 4637 __get_user(env->gprh[i], &frame->mc_vregs.spe[i]);
bcd4933a
NF		 4638 }
4639#endif
c650c008 4640 __get_user(env->spe_fscr, &frame->mc_vregs.spe[32]);
bcd4933a 4641 }
bcd4933a
NF		 4642}
4643
4644static void setup_frame(int sig, struct target_sigaction *ka,
05390248 4645 target_sigset_t *set, CPUPPCState *env)
bcd4933a
NF		 4646{
4647 struct target_sigframe *frame;
4648 struct target_sigcontext *sc;
4649 target_ulong frame_addr, newsp;
4650 int err = 0;
14585580
TM		 4651#if defined(TARGET_PPC64)
4652 struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
4653#endif
bcd4933a
NF		 4654
4655 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 4656 trace_user_setup_frame(env, frame_addr);
bcd4933a
NF		 4657 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
4658 goto sigsegv;
4659 sc = &frame->sctx;
4660
1d8b512b
RV		 4661 __put_user(ka->_sa_handler, &sc->handler);
4662 __put_user(set->sig[0], &sc->oldmask);
61e75fec 4663#if TARGET_ABI_BITS == 64
1d8b512b 4664 __put_user(set->sig[0] >> 32, &sc->_unused[3]);
bcd4933a 4665#else
1d8b512b 4666 __put_user(set->sig[1], &sc->_unused[3]);
bcd4933a 4667#endif
1d8b512b
RV		 4668 __put_user(h2g(&frame->mctx), &sc->regs);
4669 __put_user(sig, &sc->signal);
bcd4933a
NF		 4670
4671 /* Save user regs. */
7678108b
TM		 4672 save_user_regs(env, &frame->mctx);
4673
4674 /* Construct the trampoline code on the stack. */
4675 encode_trampoline(TARGET_NR_sigreturn, (uint32_t *)&frame->mctx.tramp);
bcd4933a
NF		 4676
4677 /* The kernel checks for the presence of a VDSO here. We don't
4678 emulate a vdso, so use a sigreturn system call. */
4679 env->lr = (target_ulong) h2g(frame->mctx.tramp);
4680
4681 /* Turn off all fp exceptions. */
4682 env->fpscr = 0;
4683
4684 /* Create a stack frame for the caller of the handler. */
4685 newsp = frame_addr - SIGNAL_FRAMESIZE;
beb526b1 4686 err |= put_user(env->gpr[1], newsp, target_ulong);
bcd4933a
NF		 4687
4688 if (err)
4689 goto sigsegv;
4690
4691 /* Set up registers for signal handler. */
4692 env->gpr[1] = newsp;
b6e2c935 4693 env->gpr[3] = sig;
61993a67 4694 env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx);
8d6ab333
TM		 4695
4696#if defined(TARGET_PPC64)
14585580
TM		 4697 if (get_ppc64_abi(image) < 2) {
4698 /* ELFv1 PPC64 function pointers are pointers to OPD entries. */
4699 struct target_func_ptr *handler =
4700 (struct target_func_ptr *)g2h(ka->_sa_handler);
4701 env->nip = tswapl(handler->entry);
4702 env->gpr[2] = tswapl(handler->toc);
4703 } else {
4704 /* ELFv2 PPC64 function pointers are entry points, but R12
4705 * must also be set */
4706 env->nip = tswapl((target_ulong) ka->_sa_handler);
4707 env->gpr[12] = env->nip;
4708 }
8d6ab333 4709#else
bcd4933a 4710 env->nip = (target_ulong) ka->_sa_handler;
8d6ab333
TM		 4711#endif
4712
bcd4933a
NF		 4713 /* Signal handlers are entered in big-endian mode. */
4714 env->msr &= ~MSR_LE;
4715
4716 unlock_user_struct(frame, frame_addr, 1);
4717 return;
4718
4719sigsegv:
4720 unlock_user_struct(frame, frame_addr, 1);
66393fb9 4721 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4722}
4723
4724static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 4725 target_siginfo_t *info,
05390248 4726 target_sigset_t *set, CPUPPCState *env)
bcd4933a
NF		 4727{
4728 struct target_rt_sigframe *rt_sf;
61e75fec
TM		 4729 uint32_t *trampptr = 0;
4730 struct target_mcontext *mctx = 0;
bcd4933a
NF		 4731 target_ulong rt_sf_addr, newsp = 0;
4732 int i, err = 0;
14585580
TM		 4733#if defined(TARGET_PPC64)
4734 struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
4735#endif
bcd4933a
NF		 4736
4737 rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf));
4738 if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1))
4739 goto sigsegv;
4740
f6c7a05b 4741 tswap_siginfo(&rt_sf->info, info);
bcd4933a 4742
1d8b512b
RV		 4743 __put_user(0, &rt_sf->uc.tuc_flags);
4744 __put_user(0, &rt_sf->uc.tuc_link);
4745 __put_user((target_ulong)target_sigaltstack_used.ss_sp,
4746 &rt_sf->uc.tuc_stack.ss_sp);
4747 __put_user(sas_ss_flags(env->gpr[1]),
4748 &rt_sf->uc.tuc_stack.ss_flags);
4749 __put_user(target_sigaltstack_used.ss_size,
4750 &rt_sf->uc.tuc_stack.ss_size);
61e75fec 4751#if !defined(TARGET_PPC64)
1d8b512b
RV		 4752 __put_user(h2g (&rt_sf->uc.tuc_mcontext),
4753 &rt_sf->uc.tuc_regs);
61e75fec 4754#endif
bcd4933a 4755 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
1d8b512b 4756 __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]);
bcd4933a
NF		 4757 }
4758
61e75fec
TM		 4759#if defined(TARGET_PPC64)
4760 mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
4761 trampptr = &rt_sf->trampoline[0];
4762#else
4763 mctx = &rt_sf->uc.tuc_mcontext;
4764 trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
4765#endif
4766
4767 save_user_regs(env, mctx);
4768 encode_trampoline(TARGET_NR_rt_sigreturn, trampptr);
bcd4933a
NF		 4769
4770 /* The kernel checks for the presence of a VDSO here. We don't
4771 emulate a vdso, so use a sigreturn system call. */
61e75fec 4772 env->lr = (target_ulong) h2g(trampptr);
bcd4933a
NF		 4773
4774 /* Turn off all fp exceptions. */
4775 env->fpscr = 0;
4776
4777 /* Create a stack frame for the caller of the handler. */
4778 newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16);
fbdc200a 4779 err |= put_user(env->gpr[1], newsp, target_ulong);
bcd4933a
NF		 4780
4781 if (err)
4782 goto sigsegv;
4783
4784 /* Set up registers for signal handler. */
4785 env->gpr[1] = newsp;
b6e2c935 4786 env->gpr[3] = (target_ulong) sig;
bcd4933a
NF		 4787 env->gpr[4] = (target_ulong) h2g(&rt_sf->info);
4788 env->gpr[5] = (target_ulong) h2g(&rt_sf->uc);
4789 env->gpr[6] = (target_ulong) h2g(rt_sf);
8d6ab333
TM		 4790
4791#if defined(TARGET_PPC64)
14585580
TM		 4792 if (get_ppc64_abi(image) < 2) {
4793 /* ELFv1 PPC64 function pointers are pointers to OPD entries. */
4794 struct target_func_ptr *handler =
4795 (struct target_func_ptr *)g2h(ka->_sa_handler);
4796 env->nip = tswapl(handler->entry);
4797 env->gpr[2] = tswapl(handler->toc);
4798 } else {
4799 /* ELFv2 PPC64 function pointers are entry points, but R12
4800 * must also be set */
4801 env->nip = tswapl((target_ulong) ka->_sa_handler);
4802 env->gpr[12] = env->nip;
4803 }
8d6ab333 4804#else
bcd4933a 4805 env->nip = (target_ulong) ka->_sa_handler;
8d6ab333
TM		 4806#endif
4807
bcd4933a
NF		 4808 /* Signal handlers are entered in big-endian mode. */
4809 env->msr &= ~MSR_LE;
4810
4811 unlock_user_struct(rt_sf, rt_sf_addr, 1);
4812 return;
4813
4814sigsegv:
4815 unlock_user_struct(rt_sf, rt_sf_addr, 1);
66393fb9 4816 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4817
4818}
4819
05390248 4820long do_sigreturn(CPUPPCState *env)
bcd4933a
NF		 4821{
4822 struct target_sigcontext *sc = NULL;
4823 struct target_mcontext *sr = NULL;
b04636f8 4824 target_ulong sr_addr = 0, sc_addr;
bcd4933a 4825 sigset_t blocked;
c227f099 4826 target_sigset_t set;
bcd4933a
NF		 4827
4828 sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE;
4829 if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1))
4830 goto sigsegv;
4831
4832#if defined(TARGET_PPC64)
61e75fec 4833 set.sig[0] = sc->oldmask + ((uint64_t)(sc->_unused[3]) << 32);
bcd4933a 4834#else
f5f601af
RV		 4835 __get_user(set.sig[0], &sc->oldmask);
4836 __get_user(set.sig[1], &sc->_unused[3]);
bcd4933a
NF		 4837#endif
4838 target_to_host_sigset_internal(&blocked, &set);
1c275925 4839 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
bcd4933a 4840
f5f601af 4841 __get_user(sr_addr, &sc->regs);
bcd4933a
NF		 4842 if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1))
4843 goto sigsegv;
c650c008 4844 restore_user_regs(env, sr, 1);
bcd4933a
NF		 4845
4846 unlock_user_struct(sr, sr_addr, 1);
4847 unlock_user_struct(sc, sc_addr, 1);
4848 return -TARGET_QEMU_ESIGRETURN;
4849
4850sigsegv:
4851 unlock_user_struct(sr, sr_addr, 1);
4852 unlock_user_struct(sc, sc_addr, 1);
66393fb9 4853 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4854 return 0;
4855}
4856
4857/* See arch/powerpc/kernel/signal_32.c. */
05390248 4858static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int sig)
bcd4933a
NF		 4859{
4860 struct target_mcontext *mcp;
4861 target_ulong mcp_addr;
4862 sigset_t blocked;
c227f099 4863 target_sigset_t set;
bcd4933a 4864
60e99246 4865 if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext, tuc_sigmask),
bcd4933a
NF		 4866 sizeof (set)))
4867 return 1;
4868
19774ec5
TM		 4869#if defined(TARGET_PPC64)
4870 mcp_addr = h2g(ucp) +
4871 offsetof(struct target_ucontext, tuc_sigcontext.mcontext);
4872#else
9e918dc9 4873 __get_user(mcp_addr, &ucp->tuc_regs);
19774ec5 4874#endif
bcd4933a
NF		 4875
4876 if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1))
4877 return 1;
4878
4879 target_to_host_sigset_internal(&blocked, &set);
1c275925 4880 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
c650c008 4881 restore_user_regs(env, mcp, sig);
bcd4933a
NF		 4882
4883 unlock_user_struct(mcp, mcp_addr, 1);
4884 return 0;
bcd4933a
NF		 4885}
4886
05390248 4887long do_rt_sigreturn(CPUPPCState *env)
bcd4933a
NF		 4888{
4889 struct target_rt_sigframe *rt_sf = NULL;
4890 target_ulong rt_sf_addr;
4891
4892 rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16;
4893 if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1))
4894 goto sigsegv;
4895
4896 if (do_setcontext(&rt_sf->uc, env, 1))
4897 goto sigsegv;
4898
4899 do_sigaltstack(rt_sf_addr
60e99246 4900 + offsetof(struct target_rt_sigframe, uc.tuc_stack),
bcd4933a
NF		 4901 0, env->gpr[1]);
4902
4903 unlock_user_struct(rt_sf, rt_sf_addr, 1);
4904 return -TARGET_QEMU_ESIGRETURN;
4905
4906sigsegv:
4907 unlock_user_struct(rt_sf, rt_sf_addr, 1);
66393fb9 4908 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4909 return 0;
4910}
4911
492a8744
LV		 4912#elif defined(TARGET_M68K)
4913
4914struct target_sigcontext {
4915 abi_ulong sc_mask;
4916 abi_ulong sc_usp;
4917 abi_ulong sc_d0;
4918 abi_ulong sc_d1;
4919 abi_ulong sc_a0;
4920 abi_ulong sc_a1;
4921 unsigned short sc_sr;
4922 abi_ulong sc_pc;
4923};
4924
4925struct target_sigframe
4926{
4927 abi_ulong pretcode;
4928 int sig;
4929 int code;
4930 abi_ulong psc;
4931 char retcode[8];
4932 abi_ulong extramask[TARGET_NSIG_WORDS-1];
4933 struct target_sigcontext sc;
4934};
7181155d 4935
c227f099 4936typedef int target_greg_t;
7181155d 4937#define TARGET_NGREG 18
c227f099 4938typedef target_greg_t target_gregset_t[TARGET_NGREG];
7181155d
LV		 4939
4940typedef struct target_fpregset {
4941 int f_fpcntl[3];
4942 int f_fpregs[8*3];
c227f099 4943} target_fpregset_t;
7181155d
LV		 4944
4945struct target_mcontext {
4946 int version;
c227f099
AL		 4947 target_gregset_t gregs;
4948 target_fpregset_t fpregs;
7181155d
LV		 4949};
4950
4951#define TARGET_MCONTEXT_VERSION 2
4952
4953struct target_ucontext {
60e99246
AJ		 4954 abi_ulong tuc_flags;
4955 abi_ulong tuc_link;
4956 target_stack_t tuc_stack;
4957 struct target_mcontext tuc_mcontext;
4958 abi_long tuc_filler[80];
4959 target_sigset_t tuc_sigmask;
7181155d
LV		 4960};
4961
4962struct target_rt_sigframe
4963{
4964 abi_ulong pretcode;
4965 int sig;
4966 abi_ulong pinfo;
4967 abi_ulong puc;
4968 char retcode[8];
4969 struct target_siginfo info;
4970 struct target_ucontext uc;
4971};
492a8744 4972
41ecc72b
RV		 4973static void setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env,
4974 abi_ulong mask)
492a8744 4975{
1d8b512b
RV		 4976 __put_user(mask, &sc->sc_mask);
4977 __put_user(env->aregs[7], &sc->sc_usp);
4978 __put_user(env->dregs[0], &sc->sc_d0);
4979 __put_user(env->dregs[1], &sc->sc_d1);
4980 __put_user(env->aregs[0], &sc->sc_a0);
4981 __put_user(env->aregs[1], &sc->sc_a1);
4982 __put_user(env->sr, &sc->sc_sr);
4983 __put_user(env->pc, &sc->sc_pc);
492a8744
LV		 4984}
4985
016d2e1d 4986static void
05390248 4987restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc, int *pd0)
492a8744 4988{
492a8744
LV		 4989 int temp;
4990
1d8b512b
RV		 4991 __get_user(env->aregs[7], &sc->sc_usp);
4992 __get_user(env->dregs[1], &sc->sc_d1);
4993 __get_user(env->aregs[0], &sc->sc_a0);
4994 __get_user(env->aregs[1], &sc->sc_a1);
4995 __get_user(env->pc, &sc->sc_pc);
4996 __get_user(temp, &sc->sc_sr);
492a8744
LV		 4997 env->sr = (env->sr & 0xff00) | (temp & 0xff);
4998
4999 *pd0 = tswapl(sc->sc_d0);
492a8744
LV		 5000}
5001
5002/*
5003 * Determine which stack to use..
5004 */
5005static inline abi_ulong
05390248
AF		 5006get_sigframe(struct target_sigaction *ka, CPUM68KState *regs,
5007 size_t frame_size)
492a8744
LV		 5008{
5009 unsigned long sp;
5010
5011 sp = regs->aregs[7];
5012
5013 /* This is the X/Open sanctioned signal stack switching. */
5014 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
5015 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
5016 }
5017
5018 return ((sp - frame_size) & -8UL);
5019}
5020
5021static void setup_frame(int sig, struct target_sigaction *ka,
05390248 5022 target_sigset_t *set, CPUM68KState *env)
492a8744
LV		 5023{
5024 struct target_sigframe *frame;
5025 abi_ulong frame_addr;
5026 abi_ulong retcode_addr;
5027 abi_ulong sc_addr;
492a8744
LV		 5028 int i;
5029
5030 frame_addr = get_sigframe(ka, env, sizeof *frame);
c8ee0a44 5031 trace_user_setup_frame(env, frame_addr);
492a8744
LV		 5032 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
5033 goto give_sigsegv;
5034
1d8b512b 5035 __put_user(sig, &frame->sig);
492a8744
LV		 5036
5037 sc_addr = frame_addr + offsetof(struct target_sigframe, sc);
1d8b512b 5038 __put_user(sc_addr, &frame->psc);
492a8744 5039
41ecc72b 5040 setup_sigcontext(&frame->sc, env, set->sig[0]);
492a8744
LV		 5041
5042 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
0188fadb 5043 __put_user(set->sig[i], &frame->extramask[i - 1]);
492a8744
LV		 5044 }
5045
5046 /* Set up to return from userspace. */
5047
5048 retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
1d8b512b 5049 __put_user(retcode_addr, &frame->pretcode);
492a8744
LV		 5050
5051 /* moveq #,d0; trap #0 */
5052
1d8b512b 5053 __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
1669add7 5054 (uint32_t *)(frame->retcode));
492a8744 5055
492a8744
LV		 5056 /* Set up to return from userspace */
5057
5058 env->aregs[7] = frame_addr;
5059 env->pc = ka->_sa_handler;
5060
5061 unlock_user_struct(frame, frame_addr, 1);
5062 return;
5063
5064give_sigsegv:
66393fb9 5065 force_sig(TARGET_SIGSEGV);
492a8744
LV		 5066}
5067
7181155d 5068static inline int target_rt_setup_ucontext(struct target_ucontext *uc,
05390248 5069 CPUM68KState *env)
7181155d 5070{
60e99246 5071 target_greg_t *gregs = uc->tuc_mcontext.gregs;
7181155d 5072
1d8b512b
RV		 5073 __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version);
5074 __put_user(env->dregs[0], &gregs[0]);
5075 __put_user(env->dregs[1], &gregs[1]);
5076 __put_user(env->dregs[2], &gregs[2]);
5077 __put_user(env->dregs[3], &gregs[3]);
5078 __put_user(env->dregs[4], &gregs[4]);
5079 __put_user(env->dregs[5], &gregs[5]);
5080 __put_user(env->dregs[6], &gregs[6]);
5081 __put_user(env->dregs[7], &gregs[7]);
5082 __put_user(env->aregs[0], &gregs[8]);
5083 __put_user(env->aregs[1], &gregs[9]);
5084 __put_user(env->aregs[2], &gregs[10]);
5085 __put_user(env->aregs[3], &gregs[11]);
5086 __put_user(env->aregs[4], &gregs[12]);
5087 __put_user(env->aregs[5], &gregs[13]);
5088 __put_user(env->aregs[6], &gregs[14]);
5089 __put_user(env->aregs[7], &gregs[15]);
5090 __put_user(env->pc, &gregs[16]);
5091 __put_user(env->sr, &gregs[17]);
7181155d 5092
1d8b512b 5093 return 0;
7181155d
LV		 5094}
5095
05390248 5096static inline int target_rt_restore_ucontext(CPUM68KState *env,
7181155d
LV		 5097 struct target_ucontext *uc,
5098 int *pd0)
5099{
5100 int temp;
60e99246 5101 target_greg_t *gregs = uc->tuc_mcontext.gregs;
7181155d 5102
1d8b512b 5103 __get_user(temp, &uc->tuc_mcontext.version);
7181155d
LV		 5104 if (temp != TARGET_MCONTEXT_VERSION)
5105 goto badframe;
5106
5107 /* restore passed registers */
1d8b512b
RV		 5108 __get_user(env->dregs[0], &gregs[0]);
5109 __get_user(env->dregs[1], &gregs[1]);
5110 __get_user(env->dregs[2], &gregs[2]);
5111 __get_user(env->dregs[3], &gregs[3]);
5112 __get_user(env->dregs[4], &gregs[4]);
5113 __get_user(env->dregs[5], &gregs[5]);
5114 __get_user(env->dregs[6], &gregs[6]);
5115 __get_user(env->dregs[7], &gregs[7]);
5116 __get_user(env->aregs[0], &gregs[8]);
5117 __get_user(env->aregs[1], &gregs[9]);
5118 __get_user(env->aregs[2], &gregs[10]);
5119 __get_user(env->aregs[3], &gregs[11]);
5120 __get_user(env->aregs[4], &gregs[12]);
5121 __get_user(env->aregs[5], &gregs[13]);
5122 __get_user(env->aregs[6], &gregs[14]);
5123 __get_user(env->aregs[7], &gregs[15]);
5124 __get_user(env->pc, &gregs[16]);
5125 __get_user(temp, &gregs[17]);
7181155d
LV		 5126 env->sr = (env->sr & 0xff00) | (temp & 0xff);
5127
5128 *pd0 = env->dregs[0];
1d8b512b 5129 return 0;
7181155d
LV		 5130
5131badframe:
5132 return 1;
5133}
5134
492a8744 5135static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 5136 target_siginfo_t *info,
05390248 5137 target_sigset_t *set, CPUM68KState *env)
492a8744 5138{
7181155d
LV		 5139 struct target_rt_sigframe *frame;
5140 abi_ulong frame_addr;
5141 abi_ulong retcode_addr;
5142 abi_ulong info_addr;
5143 abi_ulong uc_addr;
5144 int err = 0;
5145 int i;
5146
5147 frame_addr = get_sigframe(ka, env, sizeof *frame);
c8ee0a44 5148 trace_user_setup_rt_frame(env, frame_addr);
7181155d
LV		 5149 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
5150 goto give_sigsegv;
5151
1d8b512b 5152 __put_user(sig, &frame->sig);
7181155d
LV		 5153
5154 info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
1d8b512b 5155 __put_user(info_addr, &frame->pinfo);
7181155d
LV		 5156
5157 uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
1d8b512b 5158 __put_user(uc_addr, &frame->puc);
7181155d 5159
f6c7a05b 5160 tswap_siginfo(&frame->info, info);
7181155d
LV		 5161
5162 /* Create the ucontext */
5163
1d8b512b
RV		 5164 __put_user(0, &frame->uc.tuc_flags);
5165 __put_user(0, &frame->uc.tuc_link);
5166 __put_user(target_sigaltstack_used.ss_sp,
5167 &frame->uc.tuc_stack.ss_sp);
5168 __put_user(sas_ss_flags(env->aregs[7]),
5169 &frame->uc.tuc_stack.ss_flags);
5170 __put_user(target_sigaltstack_used.ss_size,
5171 &frame->uc.tuc_stack.ss_size);
7181155d
LV		 5172 err |= target_rt_setup_ucontext(&frame->uc, env);
5173
5174 if (err)
5175 goto give_sigsegv;
5176
5177 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
0188fadb 5178 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
7181155d
LV		 5179 }
5180
5181 /* Set up to return from userspace. */
5182
5183 retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
1d8b512b 5184 __put_user(retcode_addr, &frame->pretcode);
7181155d
LV		 5185
5186 /* moveq #,d0; notb d0; trap #0 */
5187
1d8b512b 5188 __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16),
1669add7
PM		 5189 (uint32_t *)(frame->retcode + 0));
5190 __put_user(0x4e40, (uint16_t *)(frame->retcode + 4));
7181155d
LV		 5191
5192 if (err)
5193 goto give_sigsegv;
5194
5195 /* Set up to return from userspace */
5196
5197 env->aregs[7] = frame_addr;
5198 env->pc = ka->_sa_handler;
5199
5200 unlock_user_struct(frame, frame_addr, 1);
5201 return;
5202
5203give_sigsegv:
5204 unlock_user_struct(frame, frame_addr, 1);
66393fb9 5205 force_sig(TARGET_SIGSEGV);
492a8744
LV		 5206}
5207
05390248 5208long do_sigreturn(CPUM68KState *env)
492a8744
LV		 5209{
5210 struct target_sigframe *frame;
5211 abi_ulong frame_addr = env->aregs[7] - 4;
c227f099 5212 target_sigset_t target_set;
492a8744
LV		 5213 sigset_t set;
5214 int d0, i;
5215
c8ee0a44 5216 trace_user_do_sigreturn(env, frame_addr);
492a8744
LV		 5217 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
5218 goto badframe;
5219
5220 /* set blocked signals */
5221
f5f601af 5222 __get_user(target_set.sig[0], &frame->sc.sc_mask);
492a8744
LV		 5223
5224 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
f5f601af 5225 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
492a8744
LV		 5226 }
5227
5228 target_to_host_sigset_internal(&set, &target_set);
1c275925 5229 do_sigprocmask(SIG_SETMASK, &set, NULL);
492a8744
LV		 5230
5231 /* restore registers */
5232
016d2e1d 5233 restore_sigcontext(env, &frame->sc, &d0);
492a8744
LV		 5234
5235 unlock_user_struct(frame, frame_addr, 0);
5236 return d0;
5237
5238badframe:
492a8744
LV		 5239 force_sig(TARGET_SIGSEGV);
5240 return 0;
5241}
5242
05390248 5243long do_rt_sigreturn(CPUM68KState *env)
492a8744 5244{
7181155d
LV		 5245 struct target_rt_sigframe *frame;
5246 abi_ulong frame_addr = env->aregs[7] - 4;
c227f099 5247 target_sigset_t target_set;
7181155d
LV		 5248 sigset_t set;
5249 int d0;
5250
c8ee0a44 5251 trace_user_do_rt_sigreturn(env, frame_addr);
7181155d
LV		 5252 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
5253 goto badframe;
5254
5255 target_to_host_sigset_internal(&set, &target_set);
1c275925 5256 do_sigprocmask(SIG_SETMASK, &set, NULL);
7181155d
LV		 5257
5258 /* restore registers */
5259
5260 if (target_rt_restore_ucontext(env, &frame->uc, &d0))
5261 goto badframe;
5262
5263 if (do_sigaltstack(frame_addr +
60e99246 5264 offsetof(struct target_rt_sigframe, uc.tuc_stack),
7181155d
LV		 5265 0, get_sp_from_cpustate(env)) == -EFAULT)
5266 goto badframe;
5267
5268 unlock_user_struct(frame, frame_addr, 0);
5269 return d0;
5270
5271badframe:
5272 unlock_user_struct(frame, frame_addr, 0);
5273 force_sig(TARGET_SIGSEGV);
5274 return 0;
492a8744
LV		 5275}
5276
6049f4f8
RH		 5277#elif defined(TARGET_ALPHA)
5278
5279struct target_sigcontext {
5280 abi_long sc_onstack;
5281 abi_long sc_mask;
5282 abi_long sc_pc;
5283 abi_long sc_ps;
5284 abi_long sc_regs[32];
5285 abi_long sc_ownedfp;
5286 abi_long sc_fpregs[32];
5287 abi_ulong sc_fpcr;
5288 abi_ulong sc_fp_control;
5289 abi_ulong sc_reserved1;
5290 abi_ulong sc_reserved2;
5291 abi_ulong sc_ssize;
5292 abi_ulong sc_sbase;
5293 abi_ulong sc_traparg_a0;
5294 abi_ulong sc_traparg_a1;
5295 abi_ulong sc_traparg_a2;
5296 abi_ulong sc_fp_trap_pc;
5297 abi_ulong sc_fp_trigger_sum;
5298 abi_ulong sc_fp_trigger_inst;
5299};
5300
5301struct target_ucontext {
60e99246
AJ		 5302 abi_ulong tuc_flags;
5303 abi_ulong tuc_link;
5304 abi_ulong tuc_osf_sigmask;
5305 target_stack_t tuc_stack;
5306 struct target_sigcontext tuc_mcontext;
5307 target_sigset_t tuc_sigmask;
6049f4f8
RH		 5308};
5309
5310struct target_sigframe {
5311 struct target_sigcontext sc;
5312 unsigned int retcode[3];
5313};
5314
5315struct target_rt_sigframe {
5316 target_siginfo_t info;
5317 struct target_ucontext uc;
5318 unsigned int retcode[3];
5319};
5320
5321#define INSN_MOV_R30_R16 0x47fe0410
5322#define INSN_LDI_R0 0x201f0000
5323#define INSN_CALLSYS 0x00000083
5324
41ecc72b 5325static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env,
6049f4f8
RH		 5326 abi_ulong frame_addr, target_sigset_t *set)
5327{
41ecc72b 5328 int i;
6049f4f8 5329
1d8b512b
RV		 5330 __put_user(on_sig_stack(frame_addr), &sc->sc_onstack);
5331 __put_user(set->sig[0], &sc->sc_mask);
5332 __put_user(env->pc, &sc->sc_pc);
5333 __put_user(8, &sc->sc_ps);
6049f4f8
RH		 5334
5335 for (i = 0; i < 31; ++i) {
1d8b512b 5336 __put_user(env->ir[i], &sc->sc_regs[i]);
6049f4f8 5337 }
1d8b512b 5338 __put_user(0, &sc->sc_regs[31]);
6049f4f8
RH		 5339
5340 for (i = 0; i < 31; ++i) {
1d8b512b 5341 __put_user(env->fir[i], &sc->sc_fpregs[i]);
6049f4f8 5342 }
1d8b512b
RV		 5343 __put_user(0, &sc->sc_fpregs[31]);
5344 __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr);
6049f4f8 5345
1d8b512b
RV		 5346 __put_user(0, &sc->sc_traparg_a0); /* FIXME */
5347 __put_user(0, &sc->sc_traparg_a1); /* FIXME */
5348 __put_user(0, &sc->sc_traparg_a2); /* FIXME */
6049f4f8
RH		 5349}
5350
016d2e1d 5351static void restore_sigcontext(CPUAlphaState *env,
05390248 5352 struct target_sigcontext *sc)
6049f4f8
RH		 5353{
5354 uint64_t fpcr;
016d2e1d 5355 int i;
6049f4f8 5356
1d8b512b 5357 __get_user(env->pc, &sc->sc_pc);
6049f4f8
RH		 5358
5359 for (i = 0; i < 31; ++i) {
1d8b512b 5360 __get_user(env->ir[i], &sc->sc_regs[i]);
6049f4f8
RH		 5361 }
5362 for (i = 0; i < 31; ++i) {
1d8b512b 5363 __get_user(env->fir[i], &sc->sc_fpregs[i]);
6049f4f8
RH		 5364 }
5365
1d8b512b 5366 __get_user(fpcr, &sc->sc_fpcr);
6049f4f8 5367 cpu_alpha_store_fpcr(env, fpcr);
6049f4f8
RH		 5368}
5369
5370static inline abi_ulong get_sigframe(struct target_sigaction *sa,
05390248
AF		 5371 CPUAlphaState *env,
5372 unsigned long framesize)
6049f4f8
RH		 5373{
5374 abi_ulong sp = env->ir[IR_SP];
5375
5376 /* This is the X/Open sanctioned signal stack switching. */
5377 if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) {
5378 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
5379 }
5380 return (sp - framesize) & -32;
5381}
5382
5383static void setup_frame(int sig, struct target_sigaction *ka,
05390248 5384 target_sigset_t *set, CPUAlphaState *env)
6049f4f8
RH		 5385{
5386 abi_ulong frame_addr, r26;
5387 struct target_sigframe *frame;
5388 int err = 0;
5389
5390 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 5391 trace_user_setup_frame(env, frame_addr);
6049f4f8
RH		 5392 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
5393 goto give_sigsegv;
5394 }
5395
41ecc72b 5396 setup_sigcontext(&frame->sc, env, frame_addr, set);
6049f4f8
RH		 5397
5398 if (ka->sa_restorer) {
5399 r26 = ka->sa_restorer;
5400 } else {
1d8b512b
RV		 5401 __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
5402 __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn,
5403 &frame->retcode[1]);
5404 __put_user(INSN_CALLSYS, &frame->retcode[2]);
6049f4f8
RH		 5405 /* imb() */
5406 r26 = frame_addr;
5407 }
5408
5409 unlock_user_struct(frame, frame_addr, 1);
5410
5411 if (err) {
5412 give_sigsegv:
5413 if (sig == TARGET_SIGSEGV) {
5414 ka->_sa_handler = TARGET_SIG_DFL;
5415 }
5416 force_sig(TARGET_SIGSEGV);
5417 }
5418
5419 env->ir[IR_RA] = r26;
5420 env->ir[IR_PV] = env->pc = ka->_sa_handler;
5421 env->ir[IR_A0] = sig;
5422 env->ir[IR_A1] = 0;
5423 env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc);
5424 env->ir[IR_SP] = frame_addr;
5425}
5426
5427static void setup_rt_frame(int sig, struct target_sigaction *ka,
5428 target_siginfo_t *info,
05390248 5429 target_sigset_t *set, CPUAlphaState *env)
6049f4f8
RH		 5430{
5431 abi_ulong frame_addr, r26;
5432 struct target_rt_sigframe *frame;
5433 int i, err = 0;
5434
5435 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 5436 trace_user_setup_rt_frame(env, frame_addr);
6049f4f8
RH		 5437 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
5438 goto give_sigsegv;
5439 }
5440
f6c7a05b 5441 tswap_siginfo(&frame->info, info);
6049f4f8 5442
1d8b512b
RV		 5443 __put_user(0, &frame->uc.tuc_flags);
5444 __put_user(0, &frame->uc.tuc_link);
5445 __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask);
5446 __put_user(target_sigaltstack_used.ss_sp,
5447 &frame->uc.tuc_stack.ss_sp);
5448 __put_user(sas_ss_flags(env->ir[IR_SP]),
5449 &frame->uc.tuc_stack.ss_flags);
5450 __put_user(target_sigaltstack_used.ss_size,
5451 &frame->uc.tuc_stack.ss_size);
41ecc72b 5452 setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set);
6049f4f8 5453 for (i = 0; i < TARGET_NSIG_WORDS; ++i) {
1d8b512b 5454 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
6049f4f8
RH		 5455 }
5456
5457 if (ka->sa_restorer) {
5458 r26 = ka->sa_restorer;
5459 } else {
1d8b512b
RV		 5460 __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
5461 __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn,
5462 &frame->retcode[1]);
5463 __put_user(INSN_CALLSYS, &frame->retcode[2]);
6049f4f8
RH		 5464 /* imb(); */
5465 r26 = frame_addr;
5466 }
5467
5468 if (err) {
5469 give_sigsegv:
5470 if (sig == TARGET_SIGSEGV) {
5471 ka->_sa_handler = TARGET_SIG_DFL;
5472 }
5473 force_sig(TARGET_SIGSEGV);
5474 }
5475
5476 env->ir[IR_RA] = r26;
5477 env->ir[IR_PV] = env->pc = ka->_sa_handler;
5478 env->ir[IR_A0] = sig;
5479 env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info);
5480 env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
5481 env->ir[IR_SP] = frame_addr;
5482}
5483
05390248 5484long do_sigreturn(CPUAlphaState *env)
6049f4f8
RH		 5485{
5486 struct target_sigcontext *sc;
5487 abi_ulong sc_addr = env->ir[IR_A0];
5488 target_sigset_t target_set;
5489 sigset_t set;
5490
5491 if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) {
5492 goto badframe;
5493 }
5494
5495 target_sigemptyset(&target_set);
f5f601af 5496 __get_user(target_set.sig[0], &sc->sc_mask);
6049f4f8
RH		 5497
5498 target_to_host_sigset_internal(&set, &target_set);
1c275925 5499 do_sigprocmask(SIG_SETMASK, &set, NULL);
6049f4f8 5500
016d2e1d 5501 restore_sigcontext(env, sc);
6049f4f8
RH		 5502 unlock_user_struct(sc, sc_addr, 0);
5503 return env->ir[IR_V0];
5504
5505 badframe:
6049f4f8
RH		 5506 force_sig(TARGET_SIGSEGV);
5507}
5508
05390248 5509long do_rt_sigreturn(CPUAlphaState *env)
6049f4f8
RH		 5510{
5511 abi_ulong frame_addr = env->ir[IR_A0];
5512 struct target_rt_sigframe *frame;
5513 sigset_t set;
5514
c8ee0a44 5515 trace_user_do_rt_sigreturn(env, frame_addr);
6049f4f8
RH		 5516 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
5517 goto badframe;
5518 }
60e99246 5519 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
1c275925 5520 do_sigprocmask(SIG_SETMASK, &set, NULL);
6049f4f8 5521
016d2e1d 5522 restore_sigcontext(env, &frame->uc.tuc_mcontext);
6049f4f8 5523 if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
60e99246 5524 uc.tuc_stack),
6049f4f8
RH		 5525 0, env->ir[IR_SP]) == -EFAULT) {
5526 goto badframe;
5527 }
5528
5529 unlock_user_struct(frame, frame_addr, 0);
5530 return env->ir[IR_V0];
5531
5532
5533 badframe:
5534 unlock_user_struct(frame, frame_addr, 0);
5535 force_sig(TARGET_SIGSEGV);
5536}
5537
bf0f60a6
CG		 5538#elif defined(TARGET_TILEGX)
5539
5540struct target_sigcontext {
5541 union {
5542 /* General-purpose registers. */
5543 abi_ulong gregs[56];
5544 struct {
5545 abi_ulong __gregs[53];
5546 abi_ulong tp; /* Aliases gregs[TREG_TP]. */
5547 abi_ulong sp; /* Aliases gregs[TREG_SP]. */
5548 abi_ulong lr; /* Aliases gregs[TREG_LR]. */
5549 };
5550 };
5551 abi_ulong pc; /* Program counter. */
5552 abi_ulong ics; /* In Interrupt Critical Section? */
5553 abi_ulong faultnum; /* Fault number. */
5554 abi_ulong pad[5];
5555};
5556
5557struct target_ucontext {
5558 abi_ulong tuc_flags;
5559 abi_ulong tuc_link;
5560 target_stack_t tuc_stack;
5561 struct target_sigcontext tuc_mcontext;
5562 target_sigset_t tuc_sigmask; /* mask last for extensibility */
5563};
5564
5565struct target_rt_sigframe {
5566 unsigned char save_area[16]; /* caller save area */
5567 struct target_siginfo info;
5568 struct target_ucontext uc;
5569};
5570
5571static void setup_sigcontext(struct target_sigcontext *sc,
5572 CPUArchState *env, int signo)
5573{
5574 int i;
5575
5576 for (i = 0; i < TILEGX_R_COUNT; ++i) {
5577 __put_user(env->regs[i], &sc->gregs[i]);
5578 }
5579
5580 __put_user(env->pc, &sc->pc);
5581 __put_user(0, &sc->ics);
5582 __put_user(signo, &sc->faultnum);
5583}
5584
5585static void restore_sigcontext(CPUTLGState *env, struct target_sigcontext *sc)
5586{
5587 int i;
5588
5589 for (i = 0; i < TILEGX_R_COUNT; ++i) {
5590 __get_user(env->regs[i], &sc->gregs[i]);
5591 }
5592
5593 __get_user(env->pc, &sc->pc);
5594}
5595
5596static abi_ulong get_sigframe(struct target_sigaction *ka, CPUArchState *env,
5597 size_t frame_size)
5598{
5599 unsigned long sp = env->regs[TILEGX_R_SP];
5600
5601 if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) {
5602 return -1UL;
5603 }
5604
5605 if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) {
5606 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
5607 }
5608
5609 sp -= frame_size;
5610 sp &= -16UL;
5611 return sp;
5612}
5613
5614static void setup_rt_frame(int sig, struct target_sigaction *ka,
5615 target_siginfo_t *info,
5616 target_sigset_t *set, CPUArchState *env)
5617{
5618 abi_ulong frame_addr;
5619 struct target_rt_sigframe *frame;
5620 unsigned long restorer;
5621
5622 frame_addr = get_sigframe(ka, env, sizeof(*frame));
c8ee0a44 5623 trace_user_setup_rt_frame(env, frame_addr);
bf0f60a6
CG		 5624 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
5625 goto give_sigsegv;
5626 }
5627
5628 /* Always write at least the signal number for the stack backtracer. */
5629 if (ka->sa_flags & TARGET_SA_SIGINFO) {
5630 /* At sigreturn time, restore the callee-save registers too. */
5631 tswap_siginfo(&frame->info, info);
5632 /* regs->flags |= PT_FLAGS_RESTORE_REGS; FIXME: we can skip it? */
5633 } else {
5634 __put_user(info->si_signo, &frame->info.si_signo);
5635 }
5636
5637 /* Create the ucontext. */
5638 __put_user(0, &frame->uc.tuc_flags);
5639 __put_user(0, &frame->uc.tuc_link);
5640 __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
5641 __put_user(sas_ss_flags(env->regs[TILEGX_R_SP]),
5642 &frame->uc.tuc_stack.ss_flags);
5643 __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
5644 setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo);
5645
5646 restorer = (unsigned long) do_rt_sigreturn;
5647 if (ka->sa_flags & TARGET_SA_RESTORER) {
5648 restorer = (unsigned long) ka->sa_restorer;
5649 }
5650 env->pc = (unsigned long) ka->_sa_handler;
5651 env->regs[TILEGX_R_SP] = (unsigned long) frame;
5652 env->regs[TILEGX_R_LR] = restorer;
5653 env->regs[0] = (unsigned long) sig;
5654 env->regs[1] = (unsigned long) &frame->info;
5655 env->regs[2] = (unsigned long) &frame->uc;
5656 /* regs->flags |= PT_FLAGS_CALLER_SAVES; FIXME: we can skip it? */
5657
5658 unlock_user_struct(frame, frame_addr, 1);
5659 return;
5660
5661give_sigsegv:
5662 if (sig == TARGET_SIGSEGV) {
5663 ka->_sa_handler = TARGET_SIG_DFL;
5664 }
5665 force_sig(TARGET_SIGSEGV /* , current */);
5666}
5667
5668long do_rt_sigreturn(CPUTLGState *env)
5669{
5670 abi_ulong frame_addr = env->regs[TILEGX_R_SP];
5671 struct target_rt_sigframe *frame;
5672 sigset_t set;
5673
c8ee0a44 5674 trace_user_do_rt_sigreturn(env, frame_addr);
bf0f60a6
CG		 5675 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
5676 goto badframe;
5677 }
5678 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
5679 do_sigprocmask(SIG_SETMASK, &set, NULL);
5680
5681 restore_sigcontext(env, &frame->uc.tuc_mcontext);
5682 if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
5683 uc.tuc_stack),
5684 0, env->regs[TILEGX_R_SP]) == -EFAULT) {
5685 goto badframe;
5686 }
5687
5688 unlock_user_struct(frame, frame_addr, 0);
5689 return env->regs[TILEGX_R_RE];
5690
5691
5692 badframe:
5693 unlock_user_struct(frame, frame_addr, 0);
5694 force_sig(TARGET_SIGSEGV);
5695}
5696
b346ff46
FB		 5697#else
5698
624f7979 5699static void setup_frame(int sig, struct target_sigaction *ka,
9349b4f9 5700 target_sigset_t *set, CPUArchState *env)
b346ff46
FB		 5701{
5702 fprintf(stderr, "setup_frame: not implemented\n");
5703}
5704
624f7979 5705static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 5706 target_siginfo_t *info,
9349b4f9 5707 target_sigset_t *set, CPUArchState *env)
b346ff46
FB		 5708{
5709 fprintf(stderr, "setup_rt_frame: not implemented\n");
5710}
5711
9349b4f9 5712long do_sigreturn(CPUArchState *env)
b346ff46
FB		 5713{
5714 fprintf(stderr, "do_sigreturn: not implemented\n");
f8b0aa25 5715 return -TARGET_ENOSYS;
b346ff46
FB		 5716}
5717
9349b4f9 5718long do_rt_sigreturn(CPUArchState *env)
b346ff46
FB		 5719{
5720 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
f8b0aa25 5721 return -TARGET_ENOSYS;
b346ff46
FB		 5722}
5723
66fb9763
FB		 5724#endif
5725
9349b4f9 5726void process_pending_signals(CPUArchState *cpu_env)
66fb9763 5727{
db6b81d4 5728 CPUState *cpu = ENV_GET_CPU(cpu_env);
66fb9763 5729 int sig;
992f48a0 5730 abi_ulong handler;
9de5e440 5731 sigset_t set, old_set;
c227f099 5732 target_sigset_t target_old_set;
624f7979
PB		 5733 struct emulated_sigtable *k;
5734 struct target_sigaction *sa;
66fb9763 5735 struct sigqueue *q;
0429a971 5736 TaskState *ts = cpu->opaque;
3b46e624 5737
624f7979 5738 if (!ts->signal_pending)
31e31b8a
FB		 5739 return;
5740
624f7979
PB		 5741 /* FIXME: This is not threadsafe. */
5742 k = ts->sigtab;
66fb9763
FB		 5743 for(sig = 1; sig <= TARGET_NSIG; sig++) {
5744 if (k->pending)
31e31b8a 5745 goto handle_signal;
66fb9763 5746 k++;
31e31b8a
FB		 5747 }
5748 /* if no signal is pending, just return */
624f7979 5749 ts->signal_pending = 0;
31e31b8a 5750 return;
66fb9763 5751
31e31b8a 5752 handle_signal:
c8ee0a44 5753 trace_user_handle_signal(cpu_env, sig);
66fb9763
FB		 5754 /* dequeue signal */
5755 q = k->first;
5756 k->first = q->next;
5757 if (!k->first)
5758 k->pending = 0;
3b46e624 5759
db6b81d4 5760 sig = gdb_handlesig(cpu, sig);
1fddef4b 5761 if (!sig) {
ca587a8e
AJ		 5762 sa = NULL;
5763 handler = TARGET_SIG_IGN;
5764 } else {
5765 sa = &sigact_table[sig - 1];
5766 handler = sa->_sa_handler;
1fddef4b 5767 }
66fb9763 5768
a7ec0f98
PM		 5769 if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) {
5770 /* Guest has blocked SIGSEGV but we got one anyway. Assume this
5771 * is a forced SIGSEGV (ie one the kernel handles via force_sig_info
5772 * because it got a real MMU fault), and treat as if default handler.
5773 */
5774 handler = TARGET_SIG_DFL;
5775 }
5776
66fb9763 5777 if (handler == TARGET_SIG_DFL) {
ca587a8e
AJ		 5778 /* default handler : ignore some signal. The other are job control or fatal */
5779 if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
5780 kill(getpid(),SIGSTOP);
5781 } else if (sig != TARGET_SIGCHLD &&
5782 sig != TARGET_SIGURG &&
5783 sig != TARGET_SIGWINCH &&
5784 sig != TARGET_SIGCONT) {
66fb9763
FB		 5785 force_sig(sig);
5786 }
5787 } else if (handler == TARGET_SIG_IGN) {
5788 /* ignore sig */
5789 } else if (handler == TARGET_SIG_ERR) {
5790 force_sig(sig);
5791 } else {
9de5e440 5792 /* compute the blocked signals during the handler execution */
624f7979 5793 target_to_host_sigset(&set, &sa->sa_mask);
9de5e440
FB		 5794 /* SA_NODEFER indicates that the current signal should not be
5795 blocked during the handler */
624f7979 5796 if (!(sa->sa_flags & TARGET_SA_NODEFER))
9de5e440 5797 sigaddset(&set, target_to_host_signal(sig));
3b46e624 5798
9de5e440 5799 /* block signals in the handler using Linux */
1c275925 5800 do_sigprocmask(SIG_BLOCK, &set, &old_set);
9de5e440
FB		 5801 /* save the previous blocked signal state to restore it at the
5802 end of the signal execution (see do_sigreturn) */
9231944d 5803 host_to_target_sigset_internal(&target_old_set, &old_set);
9de5e440 5804
bc8a22cc 5805 /* if the CPU is in VM86 mode, we restore the 32 bit values */
84409ddb 5806#if defined(TARGET_I386) && !defined(TARGET_X86_64)
bc8a22cc
FB		 5807 {
5808 CPUX86State *env = cpu_env;
5809 if (env->eflags & VM_MASK)
5810 save_v86_state(env);
5811 }
5812#endif
9de5e440 5813 /* prepare the stack frame of the virtual CPU */
d0924a26 5814#if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64) \
bf0f60a6 5815 || defined(TARGET_OPENRISC) || defined(TARGET_TILEGX)
ff970904
RH		 5816 /* These targets do not have traditional signals. */
5817 setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
5818#else
624f7979
PB		 5819 if (sa->sa_flags & TARGET_SA_SIGINFO)
5820 setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
66fb9763 5821 else
624f7979 5822 setup_frame(sig, sa, &target_old_set, cpu_env);
ff970904 5823#endif
624f7979
PB		 5824 if (sa->sa_flags & TARGET_SA_RESETHAND)
5825 sa->_sa_handler = TARGET_SIG_DFL;
31e31b8a 5826 }
66fb9763 5827 if (q != &k->info)
624f7979 5828 free_sigqueue(cpu_env, q);
66fb9763 5829}
QEMU mirror