* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <errno.h>
+#include "qemu/osdep.h"
+#include "qemu/bitops.h"
#include <sys/ucontext.h>
#include <sys/resource.h>
#include "qemu.h"
#include "qemu-common.h"
#include "target_signal.h"
-
-//#define DEBUG_SIGNAL
+#include "trace.h"
static struct target_sigaltstack target_sigaltstack_used = {
.ss_sp = 0,
if (target_sigismember(s, i)) {
sigaddset(d, target_to_host_signal(i));
}
- }
+ }
}
void target_to_host_sigset(sigset_t *d, const target_sigset_t *s)
target_to_host_sigset(sigset, &d);
}
+int block_signals(void)
+{
+ TaskState *ts = (TaskState *)thread_cpu->opaque;
+ sigset_t set;
+
+ /* It's OK to block everything including SIGSEGV, because we won't
+ * run any further guest code before unblocking signals in
+ * process_pending_signals().
+ */
+ sigfillset(&set);
+ sigprocmask(SIG_SETMASK, &set, 0);
+
+ return atomic_xchg(&ts->signal_pending, 1);
+}
+
/* Wrapper for sigprocmask function
* Emulates a sigprocmask in a safe way for the guest. Note that set and oldset
- * are host signal set, not guest ones. This wraps the sigprocmask host calls
- * that should be protected (calls originated from guest)
+ * are host signal set, not guest ones. Returns -TARGET_ERESTARTSYS if
+ * a signal was already pending and the syscall must be restarted, or
+ * 0 on success.
+ * If set is NULL, this is guaranteed not to fail.
*/
int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset)
{
- int ret;
- sigset_t val;
- sigset_t *temp = NULL;
- CPUState *cpu = thread_cpu;
- TaskState *ts = (TaskState *)cpu->opaque;
- bool segv_was_blocked = ts->sigsegv_blocked;
+ TaskState *ts = (TaskState *)thread_cpu->opaque;
+
+ if (oldset) {
+ *oldset = ts->signal_mask;
+ }
if (set) {
- bool has_sigsegv = sigismember(set, SIGSEGV);
- val = *set;
- temp = &val;
+ int i;
- sigdelset(temp, SIGSEGV);
+ if (block_signals()) {
+ return -TARGET_ERESTARTSYS;
+ }
switch (how) {
case SIG_BLOCK:
- if (has_sigsegv) {
- ts->sigsegv_blocked = true;
- }
+ sigorset(&ts->signal_mask, &ts->signal_mask, set);
break;
case SIG_UNBLOCK:
- if (has_sigsegv) {
- ts->sigsegv_blocked = false;
+ for (i = 1; i <= NSIG; ++i) {
+ if (sigismember(set, i)) {
+ sigdelset(&ts->signal_mask, i);
+ }
}
break;
case SIG_SETMASK:
- ts->sigsegv_blocked = has_sigsegv;
+ ts->signal_mask = *set;
break;
default:
g_assert_not_reached();
}
- }
- ret = sigprocmask(how, temp, oldset);
-
- if (oldset && segv_was_blocked) {
- sigaddset(oldset, SIGSEGV);
+ /* Silently ignore attempts to change blocking status of KILL or STOP */
+ sigdelset(&ts->signal_mask, SIGKILL);
+ sigdelset(&ts->signal_mask, SIGSTOP);
}
+ return 0;
+}
- return ret;
+#if !defined(TARGET_OPENRISC) && !defined(TARGET_UNICORE32) && \
+ !defined(TARGET_X86_64) && !defined(TARGET_NIOS2)
+/* Just set the guest's signal mask to the specified value; the
+ * caller is assumed to have called block_signals() already.
+ */
+static void set_sigmask(const sigset_t *set)
+{
+ TaskState *ts = (TaskState *)thread_cpu->opaque;
+
+ ts->signal_mask = *set;
}
+#endif
/* siginfo conversion */
const siginfo_t *info)
{
int sig = host_to_target_signal(info->si_signo);
+ int si_code = info->si_code;
+ int si_type;
tinfo->si_signo = sig;
tinfo->si_errno = 0;
tinfo->si_code = info->si_code;
- if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV
- || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) {
- /* Should never come here, but who knows. The information for
- the target is irrelevant. */
- tinfo->_sifields._sigfault._addr = 0;
- } else if (sig == TARGET_SIGIO) {
- tinfo->_sifields._sigpoll._band = info->si_band;
- tinfo->_sifields._sigpoll._fd = info->si_fd;
- } else if (sig == TARGET_SIGCHLD) {
- tinfo->_sifields._sigchld._pid = info->si_pid;
- tinfo->_sifields._sigchld._uid = info->si_uid;
- tinfo->_sifields._sigchld._status
- = host_to_target_waitstatus(info->si_status);
- tinfo->_sifields._sigchld._utime = info->si_utime;
- tinfo->_sifields._sigchld._stime = info->si_stime;
- } else if (sig >= TARGET_SIGRTMIN) {
- tinfo->_sifields._rt._pid = info->si_pid;
- tinfo->_sifields._rt._uid = info->si_uid;
- /* XXX: potential problem if 64 bit */
- tinfo->_sifields._rt._sigval.sival_ptr
- = (abi_ulong)(unsigned long)info->si_value.sival_ptr;
+ /* This memset serves two purposes:
+ * (1) ensure we don't leak random junk to the guest later
+ * (2) placate false positives from gcc about fields
+ * being used uninitialized if it chooses to inline both this
+ * function and tswap_siginfo() into host_to_target_siginfo().
+ */
+ memset(tinfo->_sifields._pad, 0, sizeof(tinfo->_sifields._pad));
+
+ /* This is awkward, because we have to use a combination of
+ * the si_code and si_signo to figure out which of the union's
+ * members are valid. (Within the host kernel it is always possible
+ * to tell, but the kernel carefully avoids giving userspace the
+ * high 16 bits of si_code, so we don't have the information to
+ * do this the easy way...) We therefore make our best guess,
+ * bearing in mind that a guest can spoof most of the si_codes
+ * via rt_sigqueueinfo() if it likes.
+ *
+ * Once we have made our guess, we record it in the top 16 bits of
+ * the si_code, so that tswap_siginfo() later can use it.
+ * tswap_siginfo() will strip these top bits out before writing
+ * si_code to the guest (sign-extending the lower bits).
+ */
+
+ switch (si_code) {
+ case SI_USER:
+ case SI_TKILL:
+ case SI_KERNEL:
+ /* Sent via kill(), tkill() or tgkill(), or direct from the kernel.
+ * These are the only unspoofable si_code values.
+ */
+ tinfo->_sifields._kill._pid = info->si_pid;
+ tinfo->_sifields._kill._uid = info->si_uid;
+ si_type = QEMU_SI_KILL;
+ break;
+ default:
+ /* Everything else is spoofable. Make best guess based on signal */
+ switch (sig) {
+ case TARGET_SIGCHLD:
+ tinfo->_sifields._sigchld._pid = info->si_pid;
+ tinfo->_sifields._sigchld._uid = info->si_uid;
+ tinfo->_sifields._sigchld._status
+ = host_to_target_waitstatus(info->si_status);
+ tinfo->_sifields._sigchld._utime = info->si_utime;
+ tinfo->_sifields._sigchld._stime = info->si_stime;
+ si_type = QEMU_SI_CHLD;
+ break;
+ case TARGET_SIGIO:
+ tinfo->_sifields._sigpoll._band = info->si_band;
+ tinfo->_sifields._sigpoll._fd = info->si_fd;
+ si_type = QEMU_SI_POLL;
+ break;
+ default:
+ /* Assume a sigqueue()/mq_notify()/rt_sigqueueinfo() source. */
+ tinfo->_sifields._rt._pid = info->si_pid;
+ tinfo->_sifields._rt._uid = info->si_uid;
+ /* XXX: potential problem if 64 bit */
+ tinfo->_sifields._rt._sigval.sival_ptr
+ = (abi_ulong)(unsigned long)info->si_value.sival_ptr;
+ si_type = QEMU_SI_RT;
+ break;
+ }
+ break;
}
+
+ tinfo->si_code = deposit32(si_code, 16, 16, si_type);
}
static void tswap_siginfo(target_siginfo_t *tinfo,
const target_siginfo_t *info)
{
- int sig = info->si_signo;
- tinfo->si_signo = tswap32(sig);
- tinfo->si_errno = tswap32(info->si_errno);
- tinfo->si_code = tswap32(info->si_code);
-
- if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV
- || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) {
- tinfo->_sifields._sigfault._addr
- = tswapal(info->_sifields._sigfault._addr);
- } else if (sig == TARGET_SIGIO) {
- tinfo->_sifields._sigpoll._band
- = tswap32(info->_sifields._sigpoll._band);
- tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd);
- } else if (sig == TARGET_SIGCHLD) {
- tinfo->_sifields._sigchld._pid
- = tswap32(info->_sifields._sigchld._pid);
- tinfo->_sifields._sigchld._uid
- = tswap32(info->_sifields._sigchld._uid);
- tinfo->_sifields._sigchld._status
- = tswap32(info->_sifields._sigchld._status);
- tinfo->_sifields._sigchld._utime
- = tswapal(info->_sifields._sigchld._utime);
- tinfo->_sifields._sigchld._stime
- = tswapal(info->_sifields._sigchld._stime);
- } else if (sig >= TARGET_SIGRTMIN) {
- tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid);
- tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid);
- tinfo->_sifields._rt._sigval.sival_ptr
- = tswapal(info->_sifields._rt._sigval.sival_ptr);
+ int si_type = extract32(info->si_code, 16, 16);
+ int si_code = sextract32(info->si_code, 0, 16);
+
+ __put_user(info->si_signo, &tinfo->si_signo);
+ __put_user(info->si_errno, &tinfo->si_errno);
+ __put_user(si_code, &tinfo->si_code);
+
+ /* We can use our internal marker of which fields in the structure
+ * are valid, rather than duplicating the guesswork of
+ * host_to_target_siginfo_noswap() here.
+ */
+ switch (si_type) {
+ case QEMU_SI_KILL:
+ __put_user(info->_sifields._kill._pid, &tinfo->_sifields._kill._pid);
+ __put_user(info->_sifields._kill._uid, &tinfo->_sifields._kill._uid);
+ break;
+ case QEMU_SI_TIMER:
+ __put_user(info->_sifields._timer._timer1,
+ &tinfo->_sifields._timer._timer1);
+ __put_user(info->_sifields._timer._timer2,
+ &tinfo->_sifields._timer._timer2);
+ break;
+ case QEMU_SI_POLL:
+ __put_user(info->_sifields._sigpoll._band,
+ &tinfo->_sifields._sigpoll._band);
+ __put_user(info->_sifields._sigpoll._fd,
+ &tinfo->_sifields._sigpoll._fd);
+ break;
+ case QEMU_SI_FAULT:
+ __put_user(info->_sifields._sigfault._addr,
+ &tinfo->_sifields._sigfault._addr);
+ break;
+ case QEMU_SI_CHLD:
+ __put_user(info->_sifields._sigchld._pid,
+ &tinfo->_sifields._sigchld._pid);
+ __put_user(info->_sifields._sigchld._uid,
+ &tinfo->_sifields._sigchld._uid);
+ __put_user(info->_sifields._sigchld._status,
+ &tinfo->_sifields._sigchld._status);
+ __put_user(info->_sifields._sigchld._utime,
+ &tinfo->_sifields._sigchld._utime);
+ __put_user(info->_sifields._sigchld._stime,
+ &tinfo->_sifields._sigchld._stime);
+ break;
+ case QEMU_SI_RT:
+ __put_user(info->_sifields._rt._pid, &tinfo->_sifields._rt._pid);
+ __put_user(info->_sifields._rt._uid, &tinfo->_sifields._rt._uid);
+ __put_user(info->_sifields._rt._sigval.sival_ptr,
+ &tinfo->_sifields._rt._sigval.sival_ptr);
+ break;
+ default:
+ g_assert_not_reached();
}
}
-
void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info)
{
- host_to_target_siginfo_noswap(tinfo, info);
- tswap_siginfo(tinfo, tinfo);
+ target_siginfo_t tgt_tmp;
+ host_to_target_siginfo_noswap(&tgt_tmp, info);
+ tswap_siginfo(tinfo, &tgt_tmp);
}
/* XXX: we support only POSIX RT signals are used. */
/* XXX: find a solution for 64 bit (additional malloced data is needed) */
void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo)
{
- info->si_signo = tswap32(tinfo->si_signo);
- info->si_errno = tswap32(tinfo->si_errno);
- info->si_code = tswap32(tinfo->si_code);
- info->si_pid = tswap32(tinfo->_sifields._rt._pid);
- info->si_uid = tswap32(tinfo->_sifields._rt._uid);
- info->si_value.sival_ptr =
- (void *)(long)tswapal(tinfo->_sifields._rt._sigval.sival_ptr);
+ /* This conversion is used only for the rt_sigqueueinfo syscall,
+ * and so we know that the _rt fields are the valid ones.
+ */
+ abi_ulong sival_ptr;
+
+ __get_user(info->si_signo, &tinfo->si_signo);
+ __get_user(info->si_errno, &tinfo->si_errno);
+ __get_user(info->si_code, &tinfo->si_code);
+ __get_user(info->si_pid, &tinfo->_sifields._rt._pid);
+ __get_user(info->si_uid, &tinfo->_sifields._rt._uid);
+ __get_user(sival_ptr, &tinfo->_sifields._rt._sigval.sival_ptr);
+ info->si_value.sival_ptr = (void *)(long)sival_ptr;
}
static int fatal_signal (int sig)
void signal_init(void)
{
+ TaskState *ts = (TaskState *)thread_cpu->opaque;
struct sigaction act;
struct sigaction oact;
int i, j;
target_to_host_signal_table[j] = i;
}
+ /* Set the signal mask from the host mask. */
+ sigprocmask(0, 0, &ts->signal_mask);
+
/* set all host signal handlers. ALL signals are blocked during
the handlers to serialize them. */
memset(sigact_table, 0, sizeof(sigact_table));
}
}
-/* signal queue handling */
-
-static inline struct sigqueue *alloc_sigqueue(CPUArchState *env)
+#if !(defined(TARGET_X86_64) || defined(TARGET_UNICORE32))
+/* Force a synchronously taken signal. The kernel force_sig() function
+ * also forces the signal to "not blocked, not ignored", but for QEMU
+ * that work is done in process_pending_signals().
+ */
+static void force_sig(int sig)
{
- CPUState *cpu = ENV_GET_CPU(env);
- TaskState *ts = cpu->opaque;
- struct sigqueue *q = ts->first_free;
- if (!q)
- return NULL;
- ts->first_free = q->next;
- return q;
+ CPUState *cpu = thread_cpu;
+ CPUArchState *env = cpu->env_ptr;
+ target_siginfo_t info;
+
+ info.si_signo = sig;
+ info.si_errno = 0;
+ info.si_code = TARGET_SI_KERNEL;
+ info._sifields._kill._pid = 0;
+ info._sifields._kill._uid = 0;
+ queue_signal(env, info.si_signo, QEMU_SI_KILL, &info);
}
-static inline void free_sigqueue(CPUArchState *env, struct sigqueue *q)
+/* Force a SIGSEGV if we couldn't write to memory trying to set
+ * up the signal frame. oldsig is the signal we were trying to handle
+ * at the point of failure.
+ */
+static void force_sigsegv(int oldsig)
{
- CPUState *cpu = ENV_GET_CPU(env);
- TaskState *ts = cpu->opaque;
-
- q->next = ts->first_free;
- ts->first_free = q;
+ if (oldsig == SIGSEGV) {
+ /* Make sure we don't try to deliver the signal again; this will
+ * end up with handle_pending_signal() calling dump_core_and_abort().
+ */
+ sigact_table[oldsig - 1]._sa_handler = TARGET_SIG_DFL;
+ }
+ force_sig(TARGET_SIGSEGV);
}
+#endif
/* abort execution with signal */
-static void QEMU_NORETURN force_sig(int target_sig)
+static void QEMU_NORETURN dump_core_and_abort(int target_sig)
{
CPUState *cpu = thread_cpu;
CPUArchState *env = cpu->env_ptr;
TaskState *ts = (TaskState *)cpu->opaque;
int host_sig, core_dumped = 0;
struct sigaction act;
+
host_sig = target_to_host_signal(target_sig);
+ trace_user_force_sig(env, target_sig, host_sig);
gdb_signalled(env, target_sig);
/* dump core if supported by target binary format */
/* queue a signal so that it will be send to the virtual CPU as soon
as possible */
-int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info)
+int queue_signal(CPUArchState *env, int sig, int si_type,
+ target_siginfo_t *info)
{
CPUState *cpu = ENV_GET_CPU(env);
TaskState *ts = cpu->opaque;
- struct emulated_sigtable *k;
- struct sigqueue *q, **pq;
- abi_ulong handler;
- int queue;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "queue_signal: sig=%d\n",
- sig);
-#endif
- k = &ts->sigtab[sig - 1];
- queue = gdb_queuesig ();
- handler = sigact_table[sig - 1]._sa_handler;
-
- if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) {
- /* Guest has blocked SIGSEGV but we got one anyway. Assume this
- * is a forced SIGSEGV (ie one the kernel handles via force_sig_info
- * because it got a real MMU fault). A blocked SIGSEGV in that
- * situation is treated as if using the default handler. This is
- * not correct if some other process has randomly sent us a SIGSEGV
- * via kill(), but that is not easy to distinguish at this point,
- * so we assume it doesn't happen.
- */
- handler = TARGET_SIG_DFL;
- }
+ trace_user_queue_signal(env, sig);
- if (!queue && handler == TARGET_SIG_DFL) {
- if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
- kill(getpid(),SIGSTOP);
- return 0;
- } else
- /* default handler : ignore some signal. The other are fatal */
- if (sig != TARGET_SIGCHLD &&
- sig != TARGET_SIGURG &&
- sig != TARGET_SIGWINCH &&
- sig != TARGET_SIGCONT) {
- force_sig(sig);
- } else {
- return 0; /* indicate ignored */
- }
- } else if (!queue && handler == TARGET_SIG_IGN) {
- /* ignore signal */
- return 0;
- } else if (!queue && handler == TARGET_SIG_ERR) {
- force_sig(sig);
- } else {
- pq = &k->first;
- if (sig < TARGET_SIGRTMIN) {
- /* if non real time signal, we queue exactly one signal */
- if (!k->pending)
- q = &k->info;
- else
- return 0;
- } else {
- if (!k->pending) {
- /* first signal */
- q = &k->info;
- } else {
- q = alloc_sigqueue(env);
- if (!q)
- return -EAGAIN;
- while (*pq != NULL)
- pq = &(*pq)->next;
- }
- }
- *pq = q;
- q->info = *info;
- q->next = NULL;
- k->pending = 1;
- /* signal that a new signal is pending */
- ts->signal_pending = 1;
- return 1; /* indicates that the signal was queued */
- }
+ info->si_code = deposit32(info->si_code, 16, 16, si_type);
+
+ ts->sync_signal.info = *info;
+ ts->sync_signal.pending = sig;
+ /* signal that a new signal is pending */
+ atomic_set(&ts->signal_pending, 1);
+ return 1; /* indicates that the signal was queued */
+}
+
+#ifndef HAVE_SAFE_SYSCALL
+static inline void rewind_if_in_safe_syscall(void *puc)
+{
+ /* Default version: never rewind */
}
+#endif
static void host_signal_handler(int host_signum, siginfo_t *info,
void *puc)
{
CPUArchState *env = thread_cpu->env_ptr;
+ CPUState *cpu = ENV_GET_CPU(env);
+ TaskState *ts = cpu->opaque;
+
int sig;
target_siginfo_t tinfo;
+ ucontext_t *uc = puc;
+ struct emulated_sigtable *k;
/* the CPU emulator uses some host signals to detect exceptions,
we forward to it some signals */
sig = host_to_target_signal(host_signum);
if (sig < 1 || sig > TARGET_NSIG)
return;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "qemu: got signal %d\n", sig);
-#endif
+ trace_user_host_signal(env, host_signum, sig);
+
+ rewind_if_in_safe_syscall(puc);
+
host_to_target_siginfo_noswap(&tinfo, info);
- if (queue_signal(env, sig, &tinfo) == 1) {
- /* interrupt the virtual CPU as soon as possible */
- cpu_exit(thread_cpu);
- }
+ k = &ts->sigtab[sig - 1];
+ k->info = tinfo;
+ k->pending = sig;
+ ts->signal_pending = 1;
+
+ /* Block host signals until target signal handler entered. We
+ * can't block SIGSEGV or SIGBUS while we're executing guest
+ * code in case the guest code provokes one in the window between
+ * now and it getting out to the main loop. Signals will be
+ * unblocked again in process_pending_signals().
+ *
+ * WARNING: we cannot use sigfillset() here because the uc_sigmask
+ * field is a kernel sigset_t, which is much smaller than the
+ * libc sigset_t which sigfillset() operates on. Using sigfillset()
+ * would write 0xff bytes off the end of the structure and trash
+ * data on the struct.
+ * We can't use sizeof(uc->uc_sigmask) either, because the libc
+ * headers define the struct field with the wrong (too large) type.
+ */
+ memset(&uc->uc_sigmask, 0xff, SIGSET_T_SIZE);
+ sigdelset(&uc->uc_sigmask, SIGSEGV);
+ sigdelset(&uc->uc_sigmask, SIGBUS);
+
+ /* interrupt the virtual CPU as soon as possible */
+ cpu_exit(thread_cpu);
}
/* do_sigaltstack() returns target values and errnos. */
return ret;
}
-/* do_sigaction() return host values and errnos */
+/* do_sigaction() return target values and host errnos */
int do_sigaction(int sig, const struct target_sigaction *act,
struct target_sigaction *oact)
{
int host_sig;
int ret = 0;
- if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP)
- return -EINVAL;
+ if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP) {
+ return -TARGET_EINVAL;
+ }
+
+ if (block_signals()) {
+ return -TARGET_ERESTARTSYS;
+ }
+
k = &sigact_table[sig - 1];
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "sigaction sig=%d act=0x%p, oact=0x%p\n",
- sig, act, oact);
-#endif
if (oact) {
__put_user(k->_sa_handler, &oact->_sa_handler);
__put_user(k->sa_flags, &oact->sa_flags);
/* from the Linux kernel */
struct target_fpreg {
- uint16_t significand[4];
- uint16_t exponent;
+ uint16_t significand[4];
+ uint16_t exponent;
};
struct target_fpxreg {
- uint16_t significand[4];
- uint16_t exponent;
- uint16_t padding[3];
+ uint16_t significand[4];
+ uint16_t exponent;
+ uint16_t padding[3];
};
struct target_xmmreg {
- abi_ulong element[4];
+ abi_ulong element[4];
};
struct target_fpstate {
- /* Regular FPU environment */
- abi_ulong cw;
- abi_ulong sw;
- abi_ulong tag;
- abi_ulong ipoff;
- abi_ulong cssel;
- abi_ulong dataoff;
- abi_ulong datasel;
- struct target_fpreg _st[8];
- uint16_t status;
- uint16_t magic; /* 0xffff = regular FPU data only */
-
- /* FXSR FPU environment */
- abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */
- abi_ulong mxcsr;
- abi_ulong reserved;
- struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */
- struct target_xmmreg _xmm[8];
- abi_ulong padding[56];
+ /* Regular FPU environment */
+ abi_ulong cw;
+ abi_ulong sw;
+ abi_ulong tag;
+ abi_ulong ipoff;
+ abi_ulong cssel;
+ abi_ulong dataoff;
+ abi_ulong datasel;
+ struct target_fpreg _st[8];
+ uint16_t status;
+ uint16_t magic; /* 0xffff = regular FPU data only */
+
+ /* FXSR FPU environment */
+ abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */
+ abi_ulong mxcsr;
+ abi_ulong reserved;
+ struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */
+ struct target_xmmreg _xmm[8];
+ abi_ulong padding[56];
};
#define X86_FXSR_MAGIC 0x0000
struct target_sigcontext {
- uint16_t gs, __gsh;
- uint16_t fs, __fsh;
- uint16_t es, __esh;
- uint16_t ds, __dsh;
- abi_ulong edi;
- abi_ulong esi;
- abi_ulong ebp;
- abi_ulong esp;
- abi_ulong ebx;
- abi_ulong edx;
- abi_ulong ecx;
- abi_ulong eax;
- abi_ulong trapno;
- abi_ulong err;
- abi_ulong eip;
- uint16_t cs, __csh;
- abi_ulong eflags;
- abi_ulong esp_at_signal;
- uint16_t ss, __ssh;
- abi_ulong fpstate; /* pointer */
- abi_ulong oldmask;
- abi_ulong cr2;
+ uint16_t gs, __gsh;
+ uint16_t fs, __fsh;
+ uint16_t es, __esh;
+ uint16_t ds, __dsh;
+ abi_ulong edi;
+ abi_ulong esi;
+ abi_ulong ebp;
+ abi_ulong esp;
+ abi_ulong ebx;
+ abi_ulong edx;
+ abi_ulong ecx;
+ abi_ulong eax;
+ abi_ulong trapno;
+ abi_ulong err;
+ abi_ulong eip;
+ uint16_t cs, __csh;
+ abi_ulong eflags;
+ abi_ulong esp_at_signal;
+ uint16_t ss, __ssh;
+ abi_ulong fpstate; /* pointer */
+ abi_ulong oldmask;
+ abi_ulong cr2;
};
struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
};
struct sigframe
CPUState *cs = CPU(x86_env_get_cpu(env));
uint16_t magic;
- /* already locked in setup_frame() */
+ /* already locked in setup_frame() */
__put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs);
__put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs);
__put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es);
__put_user(env->regs[R_ESP], &sc->esp_at_signal);
__put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss);
- cpu_x86_fsave(env, fpstate_addr, 1);
- fpstate->status = fpstate->sw;
- magic = 0xffff;
+ cpu_x86_fsave(env, fpstate_addr, 1);
+ fpstate->status = fpstate->sw;
+ magic = 0xffff;
__put_user(magic, &fpstate->magic);
__put_user(fpstate_addr, &sc->fpstate);
- /* non-iBCS2 extensions.. */
+ /* non-iBCS2 extensions.. */
__put_user(mask, &sc->oldmask);
__put_user(env->cr[2], &sc->cr2);
}
static inline abi_ulong
get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size)
{
- unsigned long esp;
+ unsigned long esp;
- /* Default to using normal stack */
- esp = env->regs[R_ESP];
- /* This is the X/Open sanctioned signal stack switching. */
- if (ka->sa_flags & TARGET_SA_ONSTACK) {
- if (sas_ss_flags(esp) == 0)
- esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ /* Default to using normal stack */
+ esp = env->regs[R_ESP];
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (ka->sa_flags & TARGET_SA_ONSTACK) {
+ if (sas_ss_flags(esp) == 0) {
+ esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
}
+ } else {
- /* This is the legacy signal stack switching. */
- else
+ /* This is the legacy signal stack switching. */
if ((env->segs[R_SS].selector & 0xffff) != __USER_DS &&
- !(ka->sa_flags & TARGET_SA_RESTORER) &&
- ka->sa_restorer) {
+ !(ka->sa_flags & TARGET_SA_RESTORER) &&
+ ka->sa_restorer) {
esp = (unsigned long) ka->sa_restorer;
- }
- return (esp - frame_size) & -8ul;
+ }
+ }
+ return (esp - frame_size) & -8ul;
}
/* compare linux/arch/i386/kernel/signal.c:setup_frame() */
static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUX86State *env)
+ target_sigset_t *set, CPUX86State *env)
{
- abi_ulong frame_addr;
- struct sigframe *frame;
- int i;
+ abi_ulong frame_addr;
+ struct sigframe *frame;
+ int i;
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
+ goto give_sigsegv;
__put_user(sig, &frame->sig);
- setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
- frame_addr + offsetof(struct sigframe, fpstate));
+ setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
+ frame_addr + offsetof(struct sigframe, fpstate));
for(i = 1; i < TARGET_NSIG_WORDS; i++) {
__put_user(set->sig[i], &frame->extramask[i - 1]);
}
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa_flags & TARGET_SA_RESTORER) {
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
__put_user(ka->sa_restorer, &frame->pretcode);
- } else {
- uint16_t val16;
- abi_ulong retcode_addr;
- retcode_addr = frame_addr + offsetof(struct sigframe, retcode);
+ } else {
+ uint16_t val16;
+ abi_ulong retcode_addr;
+ retcode_addr = frame_addr + offsetof(struct sigframe, retcode);
__put_user(retcode_addr, &frame->pretcode);
- /* This is popl %eax ; movl $,%eax ; int $0x80 */
- val16 = 0xb858;
+ /* This is popl %eax ; movl $,%eax ; int $0x80 */
+ val16 = 0xb858;
__put_user(val16, (uint16_t *)(frame->retcode+0));
__put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2));
- val16 = 0x80cd;
+ val16 = 0x80cd;
__put_user(val16, (uint16_t *)(frame->retcode+6));
- }
+ }
- /* Set up registers for signal handler */
- env->regs[R_ESP] = frame_addr;
- env->eip = ka->_sa_handler;
+ /* Set up registers for signal handler */
+ env->regs[R_ESP] = frame_addr;
+ env->eip = ka->_sa_handler;
- cpu_x86_load_seg(env, R_DS, __USER_DS);
- cpu_x86_load_seg(env, R_ES, __USER_DS);
- cpu_x86_load_seg(env, R_SS, __USER_DS);
- cpu_x86_load_seg(env, R_CS, __USER_CS);
- env->eflags &= ~TF_MASK;
+ cpu_x86_load_seg(env, R_DS, __USER_DS);
+ cpu_x86_load_seg(env, R_ES, __USER_DS);
+ cpu_x86_load_seg(env, R_SS, __USER_DS);
+ cpu_x86_load_seg(env, R_CS, __USER_CS);
+ env->eflags &= ~TF_MASK;
- unlock_user_struct(frame, frame_addr, 1);
+ unlock_user_struct(frame, frame_addr, 1);
- return;
+ return;
give_sigsegv:
- if (sig == TARGET_SIGSEGV)
- ka->_sa_handler = TARGET_SIG_DFL;
- force_sig(TARGET_SIGSEGV /* , current */);
+ force_sigsegv(sig);
}
/* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */
static void setup_rt_frame(int sig, struct target_sigaction *ka,
target_siginfo_t *info,
- target_sigset_t *set, CPUX86State *env)
+ target_sigset_t *set, CPUX86State *env)
{
- abi_ulong frame_addr, addr;
- struct rt_sigframe *frame;
- int i;
+ abi_ulong frame_addr, addr;
+ struct rt_sigframe *frame;
+ int i;
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
+ goto give_sigsegv;
__put_user(sig, &frame->sig);
- addr = frame_addr + offsetof(struct rt_sigframe, info);
+ addr = frame_addr + offsetof(struct rt_sigframe, info);
__put_user(addr, &frame->pinfo);
- addr = frame_addr + offsetof(struct rt_sigframe, uc);
+ addr = frame_addr + offsetof(struct rt_sigframe, uc);
__put_user(addr, &frame->puc);
tswap_siginfo(&frame->info, info);
- /* Create the ucontext. */
+ /* Create the ucontext. */
__put_user(0, &frame->uc.tuc_flags);
__put_user(0, &frame->uc.tuc_link);
__put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
}
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa_flags & TARGET_SA_RESTORER) {
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
__put_user(ka->sa_restorer, &frame->pretcode);
- } else {
- uint16_t val16;
- addr = frame_addr + offsetof(struct rt_sigframe, retcode);
+ } else {
+ uint16_t val16;
+ addr = frame_addr + offsetof(struct rt_sigframe, retcode);
__put_user(addr, &frame->pretcode);
- /* This is movl $,%eax ; int $0x80 */
+ /* This is movl $,%eax ; int $0x80 */
__put_user(0xb8, (char *)(frame->retcode+0));
__put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1));
- val16 = 0x80cd;
+ val16 = 0x80cd;
__put_user(val16, (uint16_t *)(frame->retcode+5));
- }
+ }
- /* Set up registers for signal handler */
- env->regs[R_ESP] = frame_addr;
- env->eip = ka->_sa_handler;
+ /* Set up registers for signal handler */
+ env->regs[R_ESP] = frame_addr;
+ env->eip = ka->_sa_handler;
- cpu_x86_load_seg(env, R_DS, __USER_DS);
- cpu_x86_load_seg(env, R_ES, __USER_DS);
- cpu_x86_load_seg(env, R_SS, __USER_DS);
- cpu_x86_load_seg(env, R_CS, __USER_CS);
- env->eflags &= ~TF_MASK;
+ cpu_x86_load_seg(env, R_DS, __USER_DS);
+ cpu_x86_load_seg(env, R_ES, __USER_DS);
+ cpu_x86_load_seg(env, R_SS, __USER_DS);
+ cpu_x86_load_seg(env, R_CS, __USER_CS);
+ env->eflags &= ~TF_MASK;
- unlock_user_struct(frame, frame_addr, 1);
+ unlock_user_struct(frame, frame_addr, 1);
- return;
+ return;
give_sigsegv:
- if (sig == TARGET_SIGSEGV)
- ka->_sa_handler = TARGET_SIG_DFL;
- force_sig(TARGET_SIGSEGV /* , current */);
+ force_sigsegv(sig);
}
static int
-restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax)
-{
- unsigned int err = 0;
- abi_ulong fpstate_addr;
- unsigned int tmpflags;
-
- cpu_x86_load_seg(env, R_GS, tswap16(sc->gs));
- cpu_x86_load_seg(env, R_FS, tswap16(sc->fs));
- cpu_x86_load_seg(env, R_ES, tswap16(sc->es));
- cpu_x86_load_seg(env, R_DS, tswap16(sc->ds));
-
- env->regs[R_EDI] = tswapl(sc->edi);
- env->regs[R_ESI] = tswapl(sc->esi);
- env->regs[R_EBP] = tswapl(sc->ebp);
- env->regs[R_ESP] = tswapl(sc->esp);
- env->regs[R_EBX] = tswapl(sc->ebx);
- env->regs[R_EDX] = tswapl(sc->edx);
- env->regs[R_ECX] = tswapl(sc->ecx);
- env->eip = tswapl(sc->eip);
-
- cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3);
- cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3);
-
- tmpflags = tswapl(sc->eflags);
- env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
- // regs->orig_eax = -1; /* disable syscall checks */
-
- fpstate_addr = tswapl(sc->fpstate);
- if (fpstate_addr != 0) {
- if (!access_ok(VERIFY_READ, fpstate_addr,
- sizeof(struct target_fpstate)))
- goto badframe;
- cpu_x86_frstor(env, fpstate_addr, 1);
- }
+restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc)
+{
+ unsigned int err = 0;
+ abi_ulong fpstate_addr;
+ unsigned int tmpflags;
+
+ cpu_x86_load_seg(env, R_GS, tswap16(sc->gs));
+ cpu_x86_load_seg(env, R_FS, tswap16(sc->fs));
+ cpu_x86_load_seg(env, R_ES, tswap16(sc->es));
+ cpu_x86_load_seg(env, R_DS, tswap16(sc->ds));
+
+ env->regs[R_EDI] = tswapl(sc->edi);
+ env->regs[R_ESI] = tswapl(sc->esi);
+ env->regs[R_EBP] = tswapl(sc->ebp);
+ env->regs[R_ESP] = tswapl(sc->esp);
+ env->regs[R_EBX] = tswapl(sc->ebx);
+ env->regs[R_EDX] = tswapl(sc->edx);
+ env->regs[R_ECX] = tswapl(sc->ecx);
+ env->regs[R_EAX] = tswapl(sc->eax);
+ env->eip = tswapl(sc->eip);
+
+ cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3);
+ cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3);
+
+ tmpflags = tswapl(sc->eflags);
+ env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
+ // regs->orig_eax = -1; /* disable syscall checks */
+
+ fpstate_addr = tswapl(sc->fpstate);
+ if (fpstate_addr != 0) {
+ if (!access_ok(VERIFY_READ, fpstate_addr,
+ sizeof(struct target_fpstate)))
+ goto badframe;
+ cpu_x86_frstor(env, fpstate_addr, 1);
+ }
- *peax = tswapl(sc->eax);
- return err;
+ return err;
badframe:
- return 1;
+ return 1;
}
long do_sigreturn(CPUX86State *env)
abi_ulong frame_addr = env->regs[R_ESP] - 8;
target_sigset_t target_set;
sigset_t set;
- int eax, i;
+ int i;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_sigreturn\n");
-#endif
+ trace_user_do_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
/* set blocked signals */
}
target_to_host_sigset_internal(&set, &target_set);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
/* restore registers */
- if (restore_sigcontext(env, &frame->sc, &eax))
+ if (restore_sigcontext(env, &frame->sc))
goto badframe;
unlock_user_struct(frame, frame_addr, 0);
- return eax;
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUX86State *env)
{
- abi_ulong frame_addr;
- struct rt_sigframe *frame;
- sigset_t set;
- int eax;
+ abi_ulong frame_addr;
+ struct rt_sigframe *frame;
+ sigset_t set;
- frame_addr = env->regs[R_ESP] - 4;
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ frame_addr = env->regs[R_ESP] - 4;
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
+ goto badframe;
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ set_sigmask(&set);
- if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax))
- goto badframe;
+ if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) {
+ goto badframe;
+ }
- if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0,
- get_sp_from_cpustate(env)) == -EFAULT)
- goto badframe;
+ if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0,
+ get_sp_from_cpustate(env)) == -EFAULT) {
+ goto badframe;
+ }
- unlock_user_struct(frame, frame_addr, 0);
- return eax;
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return 0;
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
#elif defined(TARGET_AARCH64)
uint64_t pstate;
target_to_host_sigset(&set, &sf->uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
for (i = 0; i < 31; i++) {
__get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
abi_ulong frame_addr, return_addr;
frame_addr = get_sigframe(ka, env);
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
give_sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(usig);
}
static void setup_rt_frame(int sig, struct target_sigaction *ka,
struct target_rt_sigframe *frame = NULL;
abi_ulong frame_addr = env->xregs[31];
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (frame_addr & 15) {
goto badframe;
}
}
unlock_user_struct(frame, frame_addr, 0);
- return env->xregs[0];
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_sigreturn(CPUARMState *env)
#elif defined(TARGET_ARM)
struct target_sigcontext {
- abi_ulong trap_no;
- abi_ulong error_code;
- abi_ulong oldmask;
- abi_ulong arm_r0;
- abi_ulong arm_r1;
- abi_ulong arm_r2;
- abi_ulong arm_r3;
- abi_ulong arm_r4;
- abi_ulong arm_r5;
- abi_ulong arm_r6;
- abi_ulong arm_r7;
- abi_ulong arm_r8;
- abi_ulong arm_r9;
- abi_ulong arm_r10;
- abi_ulong arm_fp;
- abi_ulong arm_ip;
- abi_ulong arm_sp;
- abi_ulong arm_lr;
- abi_ulong arm_pc;
- abi_ulong arm_cpsr;
- abi_ulong fault_address;
+ abi_ulong trap_no;
+ abi_ulong error_code;
+ abi_ulong oldmask;
+ abi_ulong arm_r0;
+ abi_ulong arm_r1;
+ abi_ulong arm_r2;
+ abi_ulong arm_r3;
+ abi_ulong arm_r4;
+ abi_ulong arm_r5;
+ abi_ulong arm_r6;
+ abi_ulong arm_r7;
+ abi_ulong arm_r8;
+ abi_ulong arm_r9;
+ abi_ulong arm_r10;
+ abi_ulong arm_fp;
+ abi_ulong arm_ip;
+ abi_ulong arm_sp;
+ abi_ulong arm_lr;
+ abi_ulong arm_pc;
+ abi_ulong arm_cpsr;
+ abi_ulong fault_address;
};
struct target_ucontext_v1 {
setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
CPUARMState *env, abi_ulong mask)
{
- __put_user(env->regs[0], &sc->arm_r0);
- __put_user(env->regs[1], &sc->arm_r1);
- __put_user(env->regs[2], &sc->arm_r2);
- __put_user(env->regs[3], &sc->arm_r3);
- __put_user(env->regs[4], &sc->arm_r4);
- __put_user(env->regs[5], &sc->arm_r5);
- __put_user(env->regs[6], &sc->arm_r6);
- __put_user(env->regs[7], &sc->arm_r7);
- __put_user(env->regs[8], &sc->arm_r8);
- __put_user(env->regs[9], &sc->arm_r9);
- __put_user(env->regs[10], &sc->arm_r10);
- __put_user(env->regs[11], &sc->arm_fp);
- __put_user(env->regs[12], &sc->arm_ip);
- __put_user(env->regs[13], &sc->arm_sp);
- __put_user(env->regs[14], &sc->arm_lr);
- __put_user(env->regs[15], &sc->arm_pc);
+ __put_user(env->regs[0], &sc->arm_r0);
+ __put_user(env->regs[1], &sc->arm_r1);
+ __put_user(env->regs[2], &sc->arm_r2);
+ __put_user(env->regs[3], &sc->arm_r3);
+ __put_user(env->regs[4], &sc->arm_r4);
+ __put_user(env->regs[5], &sc->arm_r5);
+ __put_user(env->regs[6], &sc->arm_r6);
+ __put_user(env->regs[7], &sc->arm_r7);
+ __put_user(env->regs[8], &sc->arm_r8);
+ __put_user(env->regs[9], &sc->arm_r9);
+ __put_user(env->regs[10], &sc->arm_r10);
+ __put_user(env->regs[11], &sc->arm_fp);
+ __put_user(env->regs[12], &sc->arm_ip);
+ __put_user(env->regs[13], &sc->arm_sp);
+ __put_user(env->regs[14], &sc->arm_lr);
+ __put_user(env->regs[15], &sc->arm_pc);
#ifdef TARGET_CONFIG_CPU_32
- __put_user(cpsr_read(env), &sc->arm_cpsr);
+ __put_user(cpsr_read(env), &sc->arm_cpsr);
#endif
- __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
- __put_user(/* current->thread.error_code */ 0, &sc->error_code);
- __put_user(/* current->thread.address */ 0, &sc->fault_address);
- __put_user(mask, &sc->oldmask);
+ __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
+ __put_user(/* current->thread.error_code */ 0, &sc->error_code);
+ __put_user(/* current->thread.address */ 0, &sc->fault_address);
+ __put_user(mask, &sc->oldmask);
}
static inline abi_ulong
get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize)
{
- unsigned long sp = regs->regs[13];
+ unsigned long sp = regs->regs[13];
- /*
- * This is the X/Open sanctioned signal stack switching.
- */
- if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp))
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- /*
- * ATPCS B01 mandates 8-byte alignment
- */
- return (sp - framesize) & ~7;
+ /*
+ * This is the X/Open sanctioned signal stack switching.
+ */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+ /*
+ * ATPCS B01 mandates 8-byte alignment
+ */
+ return (sp - framesize) & ~7;
}
static void
setup_return(CPUARMState *env, struct target_sigaction *ka,
- abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
+ abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
{
- abi_ulong handler = ka->_sa_handler;
- abi_ulong retcode;
- int thumb = handler & 1;
- uint32_t cpsr = cpsr_read(env);
+ abi_ulong handler = ka->_sa_handler;
+ abi_ulong retcode;
+ int thumb = handler & 1;
+ uint32_t cpsr = cpsr_read(env);
- cpsr &= ~CPSR_IT;
- if (thumb) {
- cpsr |= CPSR_T;
- } else {
- cpsr &= ~CPSR_T;
- }
+ cpsr &= ~CPSR_IT;
+ if (thumb) {
+ cpsr |= CPSR_T;
+ } else {
+ cpsr &= ~CPSR_T;
+ }
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- retcode = ka->sa_restorer;
- } else {
- unsigned int idx = thumb;
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ retcode = ka->sa_restorer;
+ } else {
+ unsigned int idx = thumb;
- if (ka->sa_flags & TARGET_SA_SIGINFO)
- idx += 2;
+ if (ka->sa_flags & TARGET_SA_SIGINFO) {
+ idx += 2;
+ }
__put_user(retcodes[idx], rc);
- retcode = rc_addr + thumb;
- }
+ retcode = rc_addr + thumb;
+ }
- env->regs[0] = usig;
- env->regs[13] = frame_addr;
- env->regs[14] = retcode;
- env->regs[15] = handler & (thumb ? ~1 : ~3);
- cpsr_write(env, cpsr, 0xffffffff);
+ env->regs[0] = usig;
+ env->regs[13] = frame_addr;
+ env->regs[14] = retcode;
+ env->regs[15] = handler & (thumb ? ~1 : ~3);
+ cpsr_write(env, cpsr, CPSR_IT | CPSR_T, CPSRWriteByInstr);
}
static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env)
static void setup_frame_v1(int usig, struct target_sigaction *ka,
target_sigset_t *set, CPUARMState *regs)
{
- struct sigframe_v1 *frame;
- abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
- int i;
+ struct sigframe_v1 *frame;
+ abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
+ int i;
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- return;
+ trace_user_setup_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto sigsegv;
+ }
- setup_sigcontext(&frame->sc, regs, set->sig[0]);
+ setup_sigcontext(&frame->sc, regs, set->sig[0]);
for(i = 1; i < TARGET_NSIG_WORDS; i++) {
__put_user(set->sig[i], &frame->extramask[i - 1]);
}
- setup_return(regs, ka, &frame->retcode, frame_addr, usig,
- frame_addr + offsetof(struct sigframe_v1, retcode));
+ setup_return(regs, ka, &frame->retcode, frame_addr, usig,
+ frame_addr + offsetof(struct sigframe_v1, retcode));
- unlock_user_struct(frame, frame_addr, 1);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+sigsegv:
+ force_sigsegv(usig);
}
static void setup_frame_v2(int usig, struct target_sigaction *ka,
target_sigset_t *set, CPUARMState *regs)
{
- struct sigframe_v2 *frame;
- abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
+ struct sigframe_v2 *frame;
+ abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- return;
+ trace_user_setup_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto sigsegv;
+ }
- setup_sigframe_v2(&frame->uc, set, regs);
+ setup_sigframe_v2(&frame->uc, set, regs);
- setup_return(regs, ka, &frame->retcode, frame_addr, usig,
- frame_addr + offsetof(struct sigframe_v2, retcode));
+ setup_return(regs, ka, &frame->retcode, frame_addr, usig,
+ frame_addr + offsetof(struct sigframe_v2, retcode));
- unlock_user_struct(frame, frame_addr, 1);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+sigsegv:
+ force_sigsegv(usig);
}
static void setup_frame(int usig, struct target_sigaction *ka,
target_siginfo_t *info,
target_sigset_t *set, CPUARMState *env)
{
- struct rt_sigframe_v1 *frame;
- abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
- struct target_sigaltstack stack;
- int i;
- abi_ulong info_addr, uc_addr;
+ struct rt_sigframe_v1 *frame;
+ abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ struct target_sigaltstack stack;
+ int i;
+ abi_ulong info_addr, uc_addr;
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- return /* 1 */;
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto sigsegv;
+ }
- info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info);
- __put_user(info_addr, &frame->pinfo);
- uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
- __put_user(uc_addr, &frame->puc);
- tswap_siginfo(&frame->info, info);
+ info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info);
+ __put_user(info_addr, &frame->pinfo);
+ uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
+ __put_user(uc_addr, &frame->puc);
+ tswap_siginfo(&frame->info, info);
- /* Clear all the bits of the ucontext we don't use. */
- memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
+ /* Clear all the bits of the ucontext we don't use. */
+ memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
- memset(&stack, 0, sizeof(stack));
- __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
- __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
- __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
- memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
+ memset(&stack, 0, sizeof(stack));
+ __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
+ __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
+ __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
+ memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
- setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]);
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
+ setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]);
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
- setup_return(env, ka, &frame->retcode, frame_addr, usig,
- frame_addr + offsetof(struct rt_sigframe_v1, retcode));
+ setup_return(env, ka, &frame->retcode, frame_addr, usig,
+ frame_addr + offsetof(struct rt_sigframe_v1, retcode));
- env->regs[1] = info_addr;
- env->regs[2] = uc_addr;
+ env->regs[1] = info_addr;
+ env->regs[2] = uc_addr;
- unlock_user_struct(frame, frame_addr, 1);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+sigsegv:
+ force_sigsegv(usig);
}
static void setup_rt_frame_v2(int usig, struct target_sigaction *ka,
target_siginfo_t *info,
target_sigset_t *set, CPUARMState *env)
{
- struct rt_sigframe_v2 *frame;
- abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
- abi_ulong info_addr, uc_addr;
+ struct rt_sigframe_v2 *frame;
+ abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ abi_ulong info_addr, uc_addr;
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- return /* 1 */;
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto sigsegv;
+ }
- info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
- uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
- tswap_siginfo(&frame->info, info);
+ info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
+ uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
+ tswap_siginfo(&frame->info, info);
- setup_sigframe_v2(&frame->uc, set, env);
+ setup_sigframe_v2(&frame->uc, set, env);
- setup_return(env, ka, &frame->retcode, frame_addr, usig,
- frame_addr + offsetof(struct rt_sigframe_v2, retcode));
+ setup_return(env, ka, &frame->retcode, frame_addr, usig,
+ frame_addr + offsetof(struct rt_sigframe_v2, retcode));
- env->regs[1] = info_addr;
- env->regs[2] = uc_addr;
+ env->regs[1] = info_addr;
+ env->regs[2] = uc_addr;
- unlock_user_struct(frame, frame_addr, 1);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+sigsegv:
+ force_sigsegv(usig);
}
static void setup_rt_frame(int usig, struct target_sigaction *ka,
static int
restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc)
{
- int err = 0;
- uint32_t cpsr;
+ int err = 0;
+ uint32_t cpsr;
__get_user(env->regs[0], &sc->arm_r0);
__get_user(env->regs[1], &sc->arm_r1);
__get_user(env->regs[15], &sc->arm_pc);
#ifdef TARGET_CONFIG_CPU_32
__get_user(cpsr, &sc->arm_cpsr);
- cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC);
+ cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC, CPSRWriteByInstr);
#endif
- err |= !valid_user_regs(env);
+ err |= !valid_user_regs(env);
- return err;
+ return err;
}
static long do_sigreturn_v1(CPUARMState *env)
{
- abi_ulong frame_addr;
- struct sigframe_v1 *frame = NULL;
- target_sigset_t set;
- sigset_t host_set;
- int i;
-
- /*
- * Since we stacked the signal on a 64-bit boundary,
- * then 'sp' should be word aligned here. If it's
- * not, then the user is trying to mess with us.
- */
- frame_addr = env->regs[13];
- if (frame_addr & 7) {
- goto badframe;
- }
-
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
+ abi_ulong frame_addr;
+ struct sigframe_v1 *frame = NULL;
+ target_sigset_t set;
+ sigset_t host_set;
+ int i;
- __get_user(set.sig[0], &frame->sc.oldmask);
+ /*
+ * Since we stacked the signal on a 64-bit boundary,
+ * then 'sp' should be word aligned here. If it's
+ * not, then the user is trying to mess with us.
+ */
+ frame_addr = env->regs[13];
+ trace_user_do_sigreturn(env, frame_addr);
+ if (frame_addr & 7) {
+ goto badframe;
+ }
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ __get_user(set.sig[0], &frame->sc.oldmask);
for(i = 1; i < TARGET_NSIG_WORDS; i++) {
__get_user(set.sig[i], &frame->extramask[i - 1]);
}
- target_to_host_sigset_internal(&host_set, &set);
- do_sigprocmask(SIG_SETMASK, &host_set, NULL);
+ target_to_host_sigset_internal(&host_set, &set);
+ set_sigmask(&host_set);
- if (restore_sigcontext(env, &frame->sc))
- goto badframe;
+ if (restore_sigcontext(env, &frame->sc)) {
+ goto badframe;
+ }
#if 0
- /* Send SIGTRAP if we're single-stepping */
- if (ptrace_cancel_bpt(current))
- send_sig(SIGTRAP, current, 1);
+ /* Send SIGTRAP if we're single-stepping */
+ if (ptrace_cancel_bpt(current))
+ send_sig(SIGTRAP, current, 1);
#endif
- unlock_user_struct(frame, frame_addr, 0);
- return env->regs[0];
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
- force_sig(TARGET_SIGSEGV /* , current */);
- return 0;
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *regspace)
return (abi_ulong*)(iwmmxtframe + 1);
}
-static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr,
+static int do_sigframe_return_v2(CPUARMState *env,
+ target_ulong context_addr,
struct target_ucontext_v2 *uc)
{
sigset_t host_set;
abi_ulong *regspace;
target_to_host_sigset(&host_set, &uc->tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &host_set, NULL);
+ set_sigmask(&host_set);
if (restore_sigcontext(env, &uc->tuc_mcontext))
return 1;
}
}
- if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
+ if (do_sigaltstack(context_addr
+ + offsetof(struct target_ucontext_v2, tuc_stack),
+ 0, get_sp_from_cpustate(env)) == -EFAULT) {
return 1;
+ }
#if 0
/* Send SIGTRAP if we're single-stepping */
if (ptrace_cancel_bpt(current))
- send_sig(SIGTRAP, current, 1);
+ send_sig(SIGTRAP, current, 1);
#endif
return 0;
static long do_sigreturn_v2(CPUARMState *env)
{
- abi_ulong frame_addr;
- struct sigframe_v2 *frame = NULL;
+ abi_ulong frame_addr;
+ struct sigframe_v2 *frame = NULL;
- /*
- * Since we stacked the signal on a 64-bit boundary,
- * then 'sp' should be word aligned here. If it's
- * not, then the user is trying to mess with us.
- */
- frame_addr = env->regs[13];
- if (frame_addr & 7) {
- goto badframe;
- }
+ /*
+ * Since we stacked the signal on a 64-bit boundary,
+ * then 'sp' should be word aligned here. If it's
+ * not, then the user is trying to mess with us.
+ */
+ frame_addr = env->regs[13];
+ trace_user_do_sigreturn(env, frame_addr);
+ if (frame_addr & 7) {
+ goto badframe;
+ }
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
- if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
- goto badframe;
+ if (do_sigframe_return_v2(env,
+ frame_addr
+ + offsetof(struct sigframe_v2, uc),
+ &frame->uc)) {
+ goto badframe;
+ }
- unlock_user_struct(frame, frame_addr, 0);
- return env->regs[0];
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV /* , current */);
- return 0;
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_sigreturn(CPUARMState *env)
static long do_rt_sigreturn_v1(CPUARMState *env)
{
- abi_ulong frame_addr;
- struct rt_sigframe_v1 *frame = NULL;
- sigset_t host_set;
-
- /*
- * Since we stacked the signal on a 64-bit boundary,
- * then 'sp' should be word aligned here. If it's
- * not, then the user is trying to mess with us.
- */
- frame_addr = env->regs[13];
- if (frame_addr & 7) {
- goto badframe;
- }
+ abi_ulong frame_addr;
+ struct rt_sigframe_v1 *frame = NULL;
+ sigset_t host_set;
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
+ /*
+ * Since we stacked the signal on a 64-bit boundary,
+ * then 'sp' should be word aligned here. If it's
+ * not, then the user is trying to mess with us.
+ */
+ frame_addr = env->regs[13];
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (frame_addr & 7) {
+ goto badframe;
+ }
- target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &host_set, NULL);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
- if (restore_sigcontext(env, &frame->uc.tuc_mcontext))
- goto badframe;
+ target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask);
+ set_sigmask(&host_set);
- if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
- goto badframe;
+ if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) {
+ goto badframe;
+ }
+
+ if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
+ goto badframe;
#if 0
- /* Send SIGTRAP if we're single-stepping */
- if (ptrace_cancel_bpt(current))
- send_sig(SIGTRAP, current, 1);
+ /* Send SIGTRAP if we're single-stepping */
+ if (ptrace_cancel_bpt(current))
+ send_sig(SIGTRAP, current, 1);
#endif
- unlock_user_struct(frame, frame_addr, 0);
- return env->regs[0];
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV /* , current */);
- return 0;
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
static long do_rt_sigreturn_v2(CPUARMState *env)
{
- abi_ulong frame_addr;
- struct rt_sigframe_v2 *frame = NULL;
+ abi_ulong frame_addr;
+ struct rt_sigframe_v2 *frame = NULL;
- /*
- * Since we stacked the signal on a 64-bit boundary,
- * then 'sp' should be word aligned here. If it's
- * not, then the user is trying to mess with us.
- */
- frame_addr = env->regs[13];
- if (frame_addr & 7) {
- goto badframe;
- }
+ /*
+ * Since we stacked the signal on a 64-bit boundary,
+ * then 'sp' should be word aligned here. If it's
+ * not, then the user is trying to mess with us.
+ */
+ frame_addr = env->regs[13];
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (frame_addr & 7) {
+ goto badframe;
+ }
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
- if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
- goto badframe;
+ if (do_sigframe_return_v2(env,
+ frame_addr
+ + offsetof(struct rt_sigframe_v2, uc),
+ &frame->uc)) {
+ goto badframe;
+ }
- unlock_user_struct(frame, frame_addr, 0);
- return env->regs[0];
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV /* , current */);
- return 0;
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUARMState *env)
/* This is what SunOS does, so shall I. */
struct target_sigcontext {
- abi_ulong sigc_onstack; /* state to restore */
+ abi_ulong sigc_onstack; /* state to restore */
- abi_ulong sigc_mask; /* sigmask to restore */
- abi_ulong sigc_sp; /* stack pointer */
- abi_ulong sigc_pc; /* program counter */
- abi_ulong sigc_npc; /* next program counter */
- abi_ulong sigc_psr; /* for condition codes etc */
- abi_ulong sigc_g1; /* User uses these two registers */
- abi_ulong sigc_o0; /* within the trampoline code. */
+ abi_ulong sigc_mask; /* sigmask to restore */
+ abi_ulong sigc_sp; /* stack pointer */
+ abi_ulong sigc_pc; /* program counter */
+ abi_ulong sigc_npc; /* next program counter */
+ abi_ulong sigc_psr; /* for condition codes etc */
+ abi_ulong sigc_g1; /* User uses these two registers */
+ abi_ulong sigc_o0; /* within the trampoline code. */
- /* Now comes information regarding the users window set
+ /* Now comes information regarding the users window set
* at the time of the signal.
*/
- abi_ulong sigc_oswins; /* outstanding windows */
+ abi_ulong sigc_oswins; /* outstanding windows */
- /* stack ptrs for each regwin buf */
- char *sigc_spbuf[__SUNOS_MAXWIN];
+ /* stack ptrs for each regwin buf */
+ char *sigc_spbuf[__SUNOS_MAXWIN];
- /* Windows to restore after signal */
- struct {
- abi_ulong locals[8];
- abi_ulong ins[8];
- } sigc_wbuf[__SUNOS_MAXWIN];
+ /* Windows to restore after signal */
+ struct {
+ abi_ulong locals[8];
+ abi_ulong ins[8];
+ } sigc_wbuf[__SUNOS_MAXWIN];
};
/* A Sparc stack frame */
struct sparc_stackf {
- abi_ulong locals[8];
- abi_ulong ins[8];
- /* It's simpler to treat fp and callers_pc as elements of ins[]
+ abi_ulong locals[8];
+ abi_ulong ins[8];
+ /* It's simpler to treat fp and callers_pc as elements of ins[]
* since we never need to access them ourselves.
*/
- char *structptr;
- abi_ulong xargs[6];
- abi_ulong xxargs[1];
+ char *structptr;
+ abi_ulong xargs[6];
+ abi_ulong xxargs[1];
};
typedef struct {
- struct {
- abi_ulong psr;
- abi_ulong pc;
- abi_ulong npc;
- abi_ulong y;
- abi_ulong u_regs[16]; /* globals and ins */
- } si_regs;
- int si_mask;
+ struct {
+ abi_ulong psr;
+ abi_ulong pc;
+ abi_ulong npc;
+ abi_ulong y;
+ abi_ulong u_regs[16]; /* globals and ins */
+ } si_regs;
+ int si_mask;
} __siginfo_t;
typedef struct {
- abi_ulong si_float_regs[32];
- unsigned long si_fsr;
- unsigned long si_fpqdepth;
- struct {
- unsigned long *insn_addr;
- unsigned long insn;
- } si_fpqueue [16];
+ abi_ulong si_float_regs[32];
+ unsigned long si_fsr;
+ unsigned long si_fpqdepth;
+ struct {
+ unsigned long *insn_addr;
+ unsigned long insn;
+ } si_fpqueue [16];
} qemu_siginfo_fpu_t;
struct target_signal_frame {
- struct sparc_stackf ss;
- __siginfo_t info;
- abi_ulong fpu_save;
- abi_ulong insns[2] __attribute__ ((aligned (8)));
- abi_ulong extramask[TARGET_NSIG_WORDS - 1];
- abi_ulong extra_size; /* Should be 0 */
- qemu_siginfo_fpu_t fpu_state;
+ struct sparc_stackf ss;
+ __siginfo_t info;
+ abi_ulong fpu_save;
+ abi_ulong insns[2] __attribute__ ((aligned (8)));
+ abi_ulong extramask[TARGET_NSIG_WORDS - 1];
+ abi_ulong extra_size; /* Should be 0 */
+ qemu_siginfo_fpu_t fpu_state;
};
struct target_rt_signal_frame {
- struct sparc_stackf ss;
- siginfo_t info;
- abi_ulong regs[20];
- sigset_t mask;
- abi_ulong fpu_save;
- unsigned int insns[2];
- stack_t stack;
- unsigned int extra_size; /* Should be 0 */
- qemu_siginfo_fpu_t fpu_state;
+ struct sparc_stackf ss;
+ siginfo_t info;
+ abi_ulong regs[20];
+ sigset_t mask;
+ abi_ulong fpu_save;
+ unsigned int insns[2];
+ stack_t stack;
+ unsigned int extra_size; /* Should be 0 */
+ qemu_siginfo_fpu_t fpu_state;
};
#define UREG_O0 16
CPUSPARCState *env,
unsigned long framesize)
{
- abi_ulong sp;
+ abi_ulong sp;
- sp = env->regwptr[UREG_FP];
+ sp = env->regwptr[UREG_FP];
- /* This is the X/Open sanctioned signal stack switching. */
- if (sa->sa_flags & TARGET_SA_ONSTACK) {
- if (!on_sig_stack(sp)
- && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7))
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
- return sp - framesize;
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (sa->sa_flags & TARGET_SA_ONSTACK) {
+ if (!on_sig_stack(sp)
+ && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+ }
+ return sp - framesize;
}
static int
setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask)
{
- int err = 0, i;
+ int err = 0, i;
__put_user(env->psr, &si->si_regs.psr);
__put_user(env->pc, &si->si_regs.pc);
__put_user(env->npc, &si->si_regs.npc);
__put_user(env->y, &si->si_regs.y);
- for (i=0; i < 8; i++) {
+ for (i=0; i < 8; i++) {
__put_user(env->gregs[i], &si->si_regs.u_regs[i]);
- }
- for (i=0; i < 8; i++) {
+ }
+ for (i=0; i < 8; i++) {
__put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
- }
+ }
__put_user(mask, &si->si_mask);
- return err;
+ return err;
}
#if 0
setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
CPUSPARCState *env, unsigned long mask)
{
- int err = 0;
+ int err = 0;
__put_user(mask, &sc->sigc_mask);
__put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
__put_user(env->gregs[1], &sc->sigc_g1);
__put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
- return err;
+ return err;
}
#endif
#define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7)))
static void setup_frame(int sig, struct target_sigaction *ka,
target_sigset_t *set, CPUSPARCState *env)
{
- abi_ulong sf_addr;
- struct target_signal_frame *sf;
- int sigframe_size, err, i;
+ abi_ulong sf_addr;
+ struct target_signal_frame *sf;
+ int sigframe_size, err, i;
- /* 1. Make sure everything is clean */
- //synchronize_user_stack();
+ /* 1. Make sure everything is clean */
+ //synchronize_user_stack();
- sigframe_size = NF_ALIGNEDSZ;
- sf_addr = get_sigframe(ka, env, sigframe_size);
+ sigframe_size = NF_ALIGNEDSZ;
+ sf_addr = get_sigframe(ka, env, sigframe_size);
+ trace_user_setup_frame(env, sf_addr);
- sf = lock_user(VERIFY_WRITE, sf_addr,
- sizeof(struct target_signal_frame), 0);
- if (!sf)
- goto sigsegv;
-
- //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
+ sf = lock_user(VERIFY_WRITE, sf_addr,
+ sizeof(struct target_signal_frame), 0);
+ if (!sf) {
+ goto sigsegv;
+ }
#if 0
- if (invalid_frame_pointer(sf, sigframe_size))
- goto sigill_and_return;
+ if (invalid_frame_pointer(sf, sigframe_size))
+ goto sigill_and_return;
#endif
- /* 2. Save the current process state */
- err = setup___siginfo(&sf->info, env, set->sig[0]);
+ /* 2. Save the current process state */
+ err = setup___siginfo(&sf->info, env, set->sig[0]);
__put_user(0, &sf->extra_size);
- //save_fpu_state(regs, &sf->fpu_state);
- //__put_user(&sf->fpu_state, &sf->fpu_save);
+ //save_fpu_state(regs, &sf->fpu_state);
+ //__put_user(&sf->fpu_state, &sf->fpu_save);
__put_user(set->sig[0], &sf->info.si_mask);
- for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
+ for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
__put_user(set->sig[i + 1], &sf->extramask[i]);
- }
+ }
- for (i = 0; i < 8; i++) {
+ for (i = 0; i < 8; i++) {
__put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]);
- }
- for (i = 0; i < 8; i++) {
+ }
+ for (i = 0; i < 8; i++) {
__put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]);
- }
- if (err)
- goto sigsegv;
-
- /* 3. signal handler back-trampoline and parameters */
- env->regwptr[UREG_FP] = sf_addr;
- env->regwptr[UREG_I0] = sig;
- env->regwptr[UREG_I1] = sf_addr +
- offsetof(struct target_signal_frame, info);
- env->regwptr[UREG_I2] = sf_addr +
- offsetof(struct target_signal_frame, info);
-
- /* 4. signal handler */
- env->pc = ka->_sa_handler;
- env->npc = (env->pc + 4);
- /* 5. return to kernel instructions */
- if (ka->sa_restorer)
- env->regwptr[UREG_I7] = ka->sa_restorer;
- else {
- uint32_t val32;
-
- env->regwptr[UREG_I7] = sf_addr +
- offsetof(struct target_signal_frame, insns) - 2 * 4;
-
- /* mov __NR_sigreturn, %g1 */
- val32 = 0x821020d8;
+ }
+ if (err)
+ goto sigsegv;
+
+ /* 3. signal handler back-trampoline and parameters */
+ env->regwptr[UREG_FP] = sf_addr;
+ env->regwptr[UREG_I0] = sig;
+ env->regwptr[UREG_I1] = sf_addr +
+ offsetof(struct target_signal_frame, info);
+ env->regwptr[UREG_I2] = sf_addr +
+ offsetof(struct target_signal_frame, info);
+
+ /* 4. signal handler */
+ env->pc = ka->_sa_handler;
+ env->npc = (env->pc + 4);
+ /* 5. return to kernel instructions */
+ if (ka->sa_restorer) {
+ env->regwptr[UREG_I7] = ka->sa_restorer;
+ } else {
+ uint32_t val32;
+
+ env->regwptr[UREG_I7] = sf_addr +
+ offsetof(struct target_signal_frame, insns) - 2 * 4;
+
+ /* mov __NR_sigreturn, %g1 */
+ val32 = 0x821020d8;
__put_user(val32, &sf->insns[0]);
- /* t 0x10 */
- val32 = 0x91d02010;
+ /* t 0x10 */
+ val32 = 0x91d02010;
__put_user(val32, &sf->insns[1]);
- if (err)
- goto sigsegv;
+ if (err)
+ goto sigsegv;
- /* Flush instruction space. */
- //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
- // tb_flush(CPU(sparc_env_get_cpu(env)));
- }
- unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
- return;
+ /* Flush instruction space. */
+ // flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
+ // tb_flush(env);
+ }
+ unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
+ return;
#if 0
sigill_and_return:
- force_sig(TARGET_SIGILL);
+ force_sig(TARGET_SIGILL);
#endif
sigsegv:
- //fprintf(stderr, "force_sig\n");
- unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
- force_sig(TARGET_SIGSEGV);
+ unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
+ force_sigsegv(sig);
}
static void setup_rt_frame(int sig, struct target_sigaction *ka,
long do_sigreturn(CPUSPARCState *env)
{
- abi_ulong sf_addr;
- struct target_signal_frame *sf;
- uint32_t up_psr, pc, npc;
- target_sigset_t set;
- sigset_t host_set;
- int err=0, i;
+ abi_ulong sf_addr;
+ struct target_signal_frame *sf;
+ uint32_t up_psr, pc, npc;
+ target_sigset_t set;
+ sigset_t host_set;
+ int err=0, i;
- sf_addr = env->regwptr[UREG_FP];
- if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1))
- goto segv_and_exit;
-#if 0
- fprintf(stderr, "sigreturn\n");
- fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
-#endif
- //cpu_dump_state(env, stderr, fprintf, 0);
+ sf_addr = env->regwptr[UREG_FP];
+ trace_user_do_sigreturn(env, sf_addr);
+ if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) {
+ goto segv_and_exit;
+ }
- /* 1. Make sure we are not getting garbage from the user */
+ /* 1. Make sure we are not getting garbage from the user */
- if (sf_addr & 3)
- goto segv_and_exit;
+ if (sf_addr & 3)
+ goto segv_and_exit;
- __get_user(pc, &sf->info.si_regs.pc);
- __get_user(npc, &sf->info.si_regs.npc);
+ __get_user(pc, &sf->info.si_regs.pc);
+ __get_user(npc, &sf->info.si_regs.npc);
- if ((pc | npc) & 3)
- goto segv_and_exit;
+ if ((pc | npc) & 3) {
+ goto segv_and_exit;
+ }
- /* 2. Restore the state */
- __get_user(up_psr, &sf->info.si_regs.psr);
+ /* 2. Restore the state */
+ __get_user(up_psr, &sf->info.si_regs.psr);
- /* User can only change condition codes and FPU enabling in %psr. */
- env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
- | (env->psr & ~(PSR_ICC /* | PSR_EF */));
+ /* User can only change condition codes and FPU enabling in %psr. */
+ env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
+ | (env->psr & ~(PSR_ICC /* | PSR_EF */));
- env->pc = pc;
- env->npc = npc;
- __get_user(env->y, &sf->info.si_regs.y);
- for (i=0; i < 8; i++) {
- __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]);
- }
- for (i=0; i < 8; i++) {
- __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
- }
+ env->pc = pc;
+ env->npc = npc;
+ __get_user(env->y, &sf->info.si_regs.y);
+ for (i=0; i < 8; i++) {
+ __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]);
+ }
+ for (i=0; i < 8; i++) {
+ __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
+ }
- /* FIXME: implement FPU save/restore:
+ /* FIXME: implement FPU save/restore:
* __get_user(fpu_save, &sf->fpu_save);
* if (fpu_save)
* err |= restore_fpu_state(env, fpu_save);
*/
- /* This is pretty much atomic, no amount locking would prevent
+ /* This is pretty much atomic, no amount locking would prevent
* the races which exist anyways.
*/
- __get_user(set.sig[0], &sf->info.si_mask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(set.sig[i], &sf->extramask[i - 1]);
- }
+ __get_user(set.sig[0], &sf->info.si_mask);
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(set.sig[i], &sf->extramask[i - 1]);
+ }
- target_to_host_sigset_internal(&host_set, &set);
- do_sigprocmask(SIG_SETMASK, &host_set, NULL);
+ target_to_host_sigset_internal(&host_set, &set);
+ set_sigmask(&host_set);
- if (err)
- goto segv_and_exit;
- unlock_user_struct(sf, sf_addr, 0);
- return env->regwptr[0];
+ if (err) {
+ goto segv_and_exit;
+ }
+ unlock_user_struct(sf, sf_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
segv_and_exit:
- unlock_user_struct(sf, sf_addr, 0);
- force_sig(TARGET_SIGSEGV);
+ unlock_user_struct(sf, sf_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUSPARCState *env)
{
+ trace_user_do_rt_sigreturn(env, 0);
fprintf(stderr, "do_rt_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
unsigned int i;
ucp_addr = env->regwptr[UREG_I0];
- if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1))
+ if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) {
goto do_sigsegv;
+ }
grp = &ucp->tuc_mcontext.mc_gregs;
__get_user(pc, &((*grp)[MC_PC]));
__get_user(npc, &((*grp)[MC_NPC]));
- if ((pc | npc) & 3)
+ if ((pc | npc) & 3) {
goto do_sigsegv;
+ }
if (env->regwptr[UREG_I1]) {
target_sigset_t target_set;
sigset_t set;
}
}
target_to_host_sigset_internal(&set, &target_set);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
}
env->pc = pc;
env->npc = npc;
__get_user(i7, &(ucp->tuc_mcontext.mc_i7));
w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
- if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
- abi_ulong) != 0)
+ if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
+ abi_ulong) != 0) {
goto do_sigsegv;
- if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
- abi_ulong) != 0)
+ }
+ if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
+ abi_ulong) != 0) {
goto do_sigsegv;
+ }
/* FIXME this does not match how the kernel handles the FPU in
* its sparc64_set_context implementation. In particular the FPU
* is only restored if fenab is non-zero in:
&(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr));
unlock_user_struct(ucp, ucp_addr, 0);
return;
- do_sigsegv:
+do_sigsegv:
unlock_user_struct(ucp, ucp_addr, 0);
force_sig(TARGET_SIGSEGV);
}
sigset_t set;
ucp_addr = env->regwptr[UREG_I0];
- if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0))
+ if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) {
goto do_sigsegv;
+ }
mcp = &ucp->tuc_mcontext;
grp = &mcp->mc_gregs;
env->pc = env->npc;
env->npc += 4;
- err = 0;
-
- do_sigprocmask(0, NULL, &set);
+ /* If we're only reading the signal mask then do_sigprocmask()
+ * is guaranteed not to fail, which is important because we don't
+ * have any way to signal a failure or restart this operation since
+ * this is not a normal syscall.
+ */
+ err = do_sigprocmask(0, NULL, &set);
+ assert(err == 0);
host_to_target_sigset_internal(&target_set, &set);
if (TARGET_NSIG_WORDS == 1) {
__put_user(target_set.sig[0],
w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
fp = i7 = 0;
- if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
- abi_ulong) != 0)
+ if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
+ abi_ulong) != 0) {
goto do_sigsegv;
- if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
- abi_ulong) != 0)
+ }
+ if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
+ abi_ulong) != 0) {
goto do_sigsegv;
+ }
__put_user(fp, &(mcp->mc_fp));
__put_user(i7, &(mcp->mc_i7));
goto do_sigsegv;
unlock_user_struct(ucp, ucp_addr, 1);
return;
- do_sigsegv:
+do_sigsegv:
unlock_user_struct(ucp, ucp_addr, 1);
force_sig(TARGET_SIGSEGV);
}
}
static inline void setup_sigcontext(CPUMIPSState *regs,
- struct target_sigcontext *sc)
+ struct target_sigcontext *sc)
{
int i;
int i;
frame_addr = get_sigframe(ka, regs, sizeof(*frame));
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
+ trace_user_setup_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
install_sigtramp(frame->sf_code, TARGET_NR_sigreturn);
return;
give_sigsegv:
- force_sig(TARGET_SIGSEGV/*, current*/);
+ force_sigsegv(sig);
}
long do_sigreturn(CPUMIPSState *regs)
target_sigset_t target_set;
int i;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_sigreturn\n");
-#endif
frame_addr = regs->active_tc.gpr[29];
+ trace_user_do_sigreturn(regs, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
+ goto badframe;
for(i = 0; i < TARGET_NSIG_WORDS; i++) {
__get_user(target_set.sig[i], &frame->sf_mask.sig[i]);
}
target_to_host_sigset_internal(&blocked, &target_set);
- do_sigprocmask(SIG_SETMASK, &blocked, NULL);
+ set_sigmask(&blocked);
restore_sigcontext(regs, &frame->sf_sc);
return -TARGET_QEMU_ESIGRETURN;
badframe:
- force_sig(TARGET_SIGSEGV/*, current*/);
- return 0;
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
# endif /* O32 */
int i;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn);
give_sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- force_sig(TARGET_SIGSEGV/*, current*/);
+ force_sigsegv(sig);
}
long do_rt_sigreturn(CPUMIPSState *env)
abi_ulong frame_addr;
sigset_t blocked;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_rt_sigreturn\n");
-#endif
frame_addr = env->active_tc.gpr[29];
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &blocked, NULL);
+ set_sigmask(&blocked);
restore_sigcontext(env, &frame->rs_uc.tuc_mcontext);
if (do_sigaltstack(frame_addr +
- offsetof(struct target_rt_sigframe, rs_uc.tuc_stack),
- 0, get_sp_from_cpustate(env)) == -EFAULT)
+ offsetof(struct target_rt_sigframe, rs_uc.tuc_stack),
+ 0, get_sp_from_cpustate(env)) == -EFAULT)
goto badframe;
env->active_tc.PC = env->CP0_EPC;
return -TARGET_QEMU_ESIGRETURN;
badframe:
- force_sig(TARGET_SIGSEGV/*, current*/);
- return 0;
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
#elif defined(TARGET_SH4)
#define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */
static abi_ulong get_sigframe(struct target_sigaction *ka,
- unsigned long sp, size_t frame_size)
+ unsigned long sp, size_t frame_size)
{
if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) {
sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
}
static void setup_sigcontext(struct target_sigcontext *sc,
- CPUSH4State *regs, unsigned long mask)
+ CPUSH4State *regs, unsigned long mask)
{
int i;
__put_user(mask, &sc->oldmask);
}
-static void restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc,
- target_ulong *r0_p)
+static void restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc)
{
int i;
#define COPY(x) __get_user(regs->x, &sc->sc_##x)
- COPY(gregs[1]);
+ COPY(gregs[0]); COPY(gregs[1]);
COPY(gregs[2]); COPY(gregs[3]);
COPY(gregs[4]); COPY(gregs[5]);
COPY(gregs[6]); COPY(gregs[7]);
__get_user(regs->fpul, &sc->sc_fpul);
regs->tra = -1; /* disable syscall checks */
- __get_user(*r0_p, &sc->sc_gregs[0]);
}
static void setup_frame(int sig, struct target_sigaction *ka,
struct target_sigframe *frame;
abi_ulong frame_addr;
int i;
- int err = 0;
frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
+ trace_user_setup_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
setup_sigcontext(&frame->sc, regs, set->sig[0]);
regs->pr = (unsigned long) ka->sa_restorer;
} else {
/* Generate return code (system call to sigreturn) */
+ abi_ulong retcode_addr = frame_addr +
+ offsetof(struct target_sigframe, retcode);
__put_user(MOVW(2), &frame->retcode[0]);
__put_user(TRAP_NOARG, &frame->retcode[1]);
__put_user((TARGET_NR_sigreturn), &frame->retcode[2]);
- regs->pr = (unsigned long) frame->retcode;
+ regs->pr = (unsigned long) retcode_addr;
}
- if (err)
- goto give_sigsegv;
-
/* Set up registers for signal handler */
regs->gregs[15] = frame_addr;
regs->gregs[4] = sig; /* Arg for signal handler */
give_sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
static void setup_rt_frame(int sig, struct target_sigaction *ka,
struct target_rt_sigframe *frame;
abi_ulong frame_addr;
int i;
- int err = 0;
frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
+ trace_user_setup_rt_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
tswap_siginfo(&frame->info, info);
__put_user(target_sigaltstack_used.ss_size,
&frame->uc.tuc_stack.ss_size);
setup_sigcontext(&frame->uc.tuc_mcontext,
- regs, set->sig[0]);
+ regs, set->sig[0]);
for(i = 0; i < TARGET_NSIG_WORDS; i++) {
__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
}
regs->pr = (unsigned long) ka->sa_restorer;
} else {
/* Generate return code (system call to sigreturn) */
+ abi_ulong retcode_addr = frame_addr +
+ offsetof(struct target_rt_sigframe, retcode);
__put_user(MOVW(2), &frame->retcode[0]);
__put_user(TRAP_NOARG, &frame->retcode[1]);
__put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]);
- regs->pr = (unsigned long) frame->retcode;
+ regs->pr = (unsigned long) retcode_addr;
}
- if (err)
- goto give_sigsegv;
-
/* Set up registers for signal handler */
regs->gregs[15] = frame_addr;
regs->gregs[4] = sig; /* Arg for signal handler */
give_sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
long do_sigreturn(CPUSH4State *regs)
abi_ulong frame_addr;
sigset_t blocked;
target_sigset_t target_set;
- target_ulong r0;
int i;
int err = 0;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_sigreturn\n");
-#endif
frame_addr = regs->gregs[15];
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
+ trace_user_do_sigreturn(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
__get_user(target_set.sig[0], &frame->sc.oldmask);
for(i = 1; i < TARGET_NSIG_WORDS; i++) {
goto badframe;
target_to_host_sigset_internal(&blocked, &target_set);
- do_sigprocmask(SIG_SETMASK, &blocked, NULL);
+ set_sigmask(&blocked);
- restore_sigcontext(regs, &frame->sc, &r0);
+ restore_sigcontext(regs, &frame->sc);
unlock_user_struct(frame, frame_addr, 0);
- return r0;
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUSH4State *regs)
struct target_rt_sigframe *frame;
abi_ulong frame_addr;
sigset_t blocked;
- target_ulong r0;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_rt_sigreturn\n");
-#endif
frame_addr = regs->gregs[15];
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
+ trace_user_do_rt_sigreturn(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &blocked, NULL);
+ set_sigmask(&blocked);
- restore_sigcontext(regs, &frame->uc.tuc_mcontext, &r0);
+ restore_sigcontext(regs, &frame->uc.tuc_mcontext);
if (do_sigaltstack(frame_addr +
- offsetof(struct target_rt_sigframe, uc.tuc_stack),
- 0, get_sp_from_cpustate(regs)) == -EFAULT)
+ offsetof(struct target_rt_sigframe, uc.tuc_stack),
+ 0, get_sp_from_cpustate(regs)) == -EFAULT) {
goto badframe;
+ }
unlock_user_struct(frame, frame_addr, 0);
- return r0;
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
#elif defined(TARGET_MICROBLAZE)
int i;
frame_addr = get_sigframe(ka, env, sizeof *frame);
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto badframe;
/* Return from sighandler will jump to the tramp.
Negative 8 offset because return is rtsd r15, 8 */
- env->regs[15] = ((unsigned long)frame->tramp) - 8;
+ env->regs[15] = frame_addr + offsetof(struct target_signal_frame, tramp)
+ - 8;
}
/* Set up registers for signal handler */
unlock_user_struct(frame, frame_addr, 1);
return;
- badframe:
- force_sig(TARGET_SIGSEGV);
+badframe:
+ force_sigsegv(sig);
}
static void setup_rt_frame(int sig, struct target_sigaction *ka,
int i;
frame_addr = env->regs[R_SP];
+ trace_user_do_sigreturn(env, frame_addr);
/* Make sure the guest isn't playing games. */
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
goto badframe;
/* Restore blocked signals */
__get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask);
for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &frame->extramask[i - 1]);
+ __get_user(target_set.sig[i], &frame->extramask[i - 1]);
}
target_to_host_sigset_internal(&set, &target_set);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
restore_sigcontext(&frame->uc.tuc_mcontext, env);
/* We got here through a sigreturn syscall, our path back is via an
rtb insn so setup r14 for that. */
env->regs[14] = env->sregs[SR_PC];
-
+
unlock_user_struct(frame, frame_addr, 0);
- return env->regs[10];
- badframe:
+ return -TARGET_QEMU_ESIGRETURN;
+badframe:
force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUMBState *env)
{
+ trace_user_do_rt_sigreturn(env, 0);
fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
#elif defined(TARGET_CRIS)
struct target_sigcontext {
- struct target_pt_regs regs; /* needs to be first */
- uint32_t oldmask;
- uint32_t usp; /* usp before stacking this gunk on it */
+ struct target_pt_regs regs; /* needs to be first */
+ uint32_t oldmask;
+ uint32_t usp; /* usp before stacking this gunk on it */
};
/* Signal frames. */
struct target_signal_frame {
- struct target_sigcontext sc;
- uint32_t extramask[TARGET_NSIG_WORDS - 1];
- uint16_t retcode[4]; /* Trampoline code. */
+ struct target_sigcontext sc;
+ uint32_t extramask[TARGET_NSIG_WORDS - 1];
+ uint16_t retcode[4]; /* Trampoline code. */
};
struct rt_signal_frame {
- siginfo_t *pinfo;
- void *puc;
- siginfo_t info;
- struct ucontext uc;
- uint16_t retcode[4]; /* Trampoline code. */
+ siginfo_t *pinfo;
+ void *puc;
+ siginfo_t info;
+ struct ucontext uc;
+ uint16_t retcode[4]; /* Trampoline code. */
};
static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
{
- __put_user(env->regs[0], &sc->regs.r0);
- __put_user(env->regs[1], &sc->regs.r1);
- __put_user(env->regs[2], &sc->regs.r2);
- __put_user(env->regs[3], &sc->regs.r3);
- __put_user(env->regs[4], &sc->regs.r4);
- __put_user(env->regs[5], &sc->regs.r5);
- __put_user(env->regs[6], &sc->regs.r6);
- __put_user(env->regs[7], &sc->regs.r7);
- __put_user(env->regs[8], &sc->regs.r8);
- __put_user(env->regs[9], &sc->regs.r9);
- __put_user(env->regs[10], &sc->regs.r10);
- __put_user(env->regs[11], &sc->regs.r11);
- __put_user(env->regs[12], &sc->regs.r12);
- __put_user(env->regs[13], &sc->regs.r13);
- __put_user(env->regs[14], &sc->usp);
- __put_user(env->regs[15], &sc->regs.acr);
- __put_user(env->pregs[PR_MOF], &sc->regs.mof);
- __put_user(env->pregs[PR_SRP], &sc->regs.srp);
- __put_user(env->pc, &sc->regs.erp);
+ __put_user(env->regs[0], &sc->regs.r0);
+ __put_user(env->regs[1], &sc->regs.r1);
+ __put_user(env->regs[2], &sc->regs.r2);
+ __put_user(env->regs[3], &sc->regs.r3);
+ __put_user(env->regs[4], &sc->regs.r4);
+ __put_user(env->regs[5], &sc->regs.r5);
+ __put_user(env->regs[6], &sc->regs.r6);
+ __put_user(env->regs[7], &sc->regs.r7);
+ __put_user(env->regs[8], &sc->regs.r8);
+ __put_user(env->regs[9], &sc->regs.r9);
+ __put_user(env->regs[10], &sc->regs.r10);
+ __put_user(env->regs[11], &sc->regs.r11);
+ __put_user(env->regs[12], &sc->regs.r12);
+ __put_user(env->regs[13], &sc->regs.r13);
+ __put_user(env->regs[14], &sc->usp);
+ __put_user(env->regs[15], &sc->regs.acr);
+ __put_user(env->pregs[PR_MOF], &sc->regs.mof);
+ __put_user(env->pregs[PR_SRP], &sc->regs.srp);
+ __put_user(env->pc, &sc->regs.erp);
}
static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
{
- __get_user(env->regs[0], &sc->regs.r0);
- __get_user(env->regs[1], &sc->regs.r1);
- __get_user(env->regs[2], &sc->regs.r2);
- __get_user(env->regs[3], &sc->regs.r3);
- __get_user(env->regs[4], &sc->regs.r4);
- __get_user(env->regs[5], &sc->regs.r5);
- __get_user(env->regs[6], &sc->regs.r6);
- __get_user(env->regs[7], &sc->regs.r7);
- __get_user(env->regs[8], &sc->regs.r8);
- __get_user(env->regs[9], &sc->regs.r9);
- __get_user(env->regs[10], &sc->regs.r10);
- __get_user(env->regs[11], &sc->regs.r11);
- __get_user(env->regs[12], &sc->regs.r12);
- __get_user(env->regs[13], &sc->regs.r13);
- __get_user(env->regs[14], &sc->usp);
- __get_user(env->regs[15], &sc->regs.acr);
- __get_user(env->pregs[PR_MOF], &sc->regs.mof);
- __get_user(env->pregs[PR_SRP], &sc->regs.srp);
- __get_user(env->pc, &sc->regs.erp);
+ __get_user(env->regs[0], &sc->regs.r0);
+ __get_user(env->regs[1], &sc->regs.r1);
+ __get_user(env->regs[2], &sc->regs.r2);
+ __get_user(env->regs[3], &sc->regs.r3);
+ __get_user(env->regs[4], &sc->regs.r4);
+ __get_user(env->regs[5], &sc->regs.r5);
+ __get_user(env->regs[6], &sc->regs.r6);
+ __get_user(env->regs[7], &sc->regs.r7);
+ __get_user(env->regs[8], &sc->regs.r8);
+ __get_user(env->regs[9], &sc->regs.r9);
+ __get_user(env->regs[10], &sc->regs.r10);
+ __get_user(env->regs[11], &sc->regs.r11);
+ __get_user(env->regs[12], &sc->regs.r12);
+ __get_user(env->regs[13], &sc->regs.r13);
+ __get_user(env->regs[14], &sc->usp);
+ __get_user(env->regs[15], &sc->regs.acr);
+ __get_user(env->pregs[PR_MOF], &sc->regs.mof);
+ __get_user(env->pregs[PR_SRP], &sc->regs.srp);
+ __get_user(env->pc, &sc->regs.erp);
}
static abi_ulong get_sigframe(CPUCRISState *env, int framesize)
{
- abi_ulong sp;
- /* Align the stack downwards to 4. */
- sp = (env->regs[R_SP] & ~3);
- return sp - framesize;
+ abi_ulong sp;
+ /* Align the stack downwards to 4. */
+ sp = (env->regs[R_SP] & ~3);
+ return sp - framesize;
}
static void setup_frame(int sig, struct target_sigaction *ka,
target_sigset_t *set, CPUCRISState *env)
{
- struct target_signal_frame *frame;
- abi_ulong frame_addr;
- int i;
-
- frame_addr = get_sigframe(env, sizeof *frame);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto badframe;
-
- /*
- * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
- * use this trampoline anymore but it sets it up for GDB.
- * In QEMU, using the trampoline simplifies things a bit so we use it.
- *
- * This is movu.w __NR_sigreturn, r9; break 13;
- */
+ struct target_signal_frame *frame;
+ abi_ulong frame_addr;
+ int i;
+
+ frame_addr = get_sigframe(env, sizeof *frame);
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
+ goto badframe;
+
+ /*
+ * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
+ * use this trampoline anymore but it sets it up for GDB.
+ * In QEMU, using the trampoline simplifies things a bit so we use it.
+ *
+ * This is movu.w __NR_sigreturn, r9; break 13;
+ */
__put_user(0x9c5f, frame->retcode+0);
__put_user(TARGET_NR_sigreturn,
frame->retcode + 1);
__put_user(0xe93d, frame->retcode + 2);
- /* Save the mask. */
+ /* Save the mask. */
__put_user(set->sig[0], &frame->sc.oldmask);
for(i = 1; i < TARGET_NSIG_WORDS; i++) {
__put_user(set->sig[i], &frame->extramask[i - 1]);
}
- setup_sigcontext(&frame->sc, env);
+ setup_sigcontext(&frame->sc, env);
- /* Move the stack and setup the arguments for the handler. */
- env->regs[R_SP] = frame_addr;
- env->regs[10] = sig;
- env->pc = (unsigned long) ka->_sa_handler;
- /* Link SRP so the guest returns through the trampoline. */
- env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode);
+ /* Move the stack and setup the arguments for the handler. */
+ env->regs[R_SP] = frame_addr;
+ env->regs[10] = sig;
+ env->pc = (unsigned long) ka->_sa_handler;
+ /* Link SRP so the guest returns through the trampoline. */
+ env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode);
- unlock_user_struct(frame, frame_addr, 1);
- return;
- badframe:
- force_sig(TARGET_SIGSEGV);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+badframe:
+ force_sigsegv(sig);
}
static void setup_rt_frame(int sig, struct target_sigaction *ka,
long do_sigreturn(CPUCRISState *env)
{
- struct target_signal_frame *frame;
- abi_ulong frame_addr;
- target_sigset_t target_set;
- sigset_t set;
- int i;
+ struct target_signal_frame *frame;
+ abi_ulong frame_addr;
+ target_sigset_t target_set;
+ sigset_t set;
+ int i;
- frame_addr = env->regs[R_SP];
- /* Make sure the guest isn't playing games. */
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
- goto badframe;
+ frame_addr = env->regs[R_SP];
+ trace_user_do_sigreturn(env, frame_addr);
+ /* Make sure the guest isn't playing games. */
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) {
+ goto badframe;
+ }
- /* Restore blocked signals */
+ /* Restore blocked signals */
__get_user(target_set.sig[0], &frame->sc.oldmask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
__get_user(target_set.sig[i], &frame->extramask[i - 1]);
- }
- target_to_host_sigset_internal(&set, &target_set);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ }
+ target_to_host_sigset_internal(&set, &target_set);
+ set_sigmask(&set);
- restore_sigcontext(&frame->sc, env);
- unlock_user_struct(frame, frame_addr, 0);
- return env->regs[10];
- badframe:
- force_sig(TARGET_SIGSEGV);
+ restore_sigcontext(&frame->sc, env);
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUCRISState *env)
{
+ trace_user_do_rt_sigreturn(env, 0);
fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
+#elif defined(TARGET_NIOS2)
+
+#define MCONTEXT_VERSION 2
+
+struct target_sigcontext {
+ int version;
+ unsigned long gregs[32];
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+struct target_rt_sigframe {
+ struct target_siginfo info;
+ struct target_ucontext uc;
+};
+
+static unsigned long sigsp(unsigned long sp, struct target_sigaction *ka)
+{
+ if (unlikely((ka->sa_flags & SA_ONSTACK)) && !sas_ss_flags(sp)) {
+#ifdef CONFIG_STACK_GROWSUP
+ return target_sigaltstack_used.ss_sp;
+#else
+ return target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+#endif
+ }
+ return sp;
+}
+
+static int rt_setup_ucontext(struct target_ucontext *uc, CPUNios2State *env)
+{
+ unsigned long *gregs = uc->tuc_mcontext.gregs;
+
+ __put_user(MCONTEXT_VERSION, &uc->tuc_mcontext.version);
+ __put_user(env->regs[1], &gregs[0]);
+ __put_user(env->regs[2], &gregs[1]);
+ __put_user(env->regs[3], &gregs[2]);
+ __put_user(env->regs[4], &gregs[3]);
+ __put_user(env->regs[5], &gregs[4]);
+ __put_user(env->regs[6], &gregs[5]);
+ __put_user(env->regs[7], &gregs[6]);
+ __put_user(env->regs[8], &gregs[7]);
+ __put_user(env->regs[9], &gregs[8]);
+ __put_user(env->regs[10], &gregs[9]);
+ __put_user(env->regs[11], &gregs[10]);
+ __put_user(env->regs[12], &gregs[11]);
+ __put_user(env->regs[13], &gregs[12]);
+ __put_user(env->regs[14], &gregs[13]);
+ __put_user(env->regs[15], &gregs[14]);
+ __put_user(env->regs[16], &gregs[15]);
+ __put_user(env->regs[17], &gregs[16]);
+ __put_user(env->regs[18], &gregs[17]);
+ __put_user(env->regs[19], &gregs[18]);
+ __put_user(env->regs[20], &gregs[19]);
+ __put_user(env->regs[21], &gregs[20]);
+ __put_user(env->regs[22], &gregs[21]);
+ __put_user(env->regs[23], &gregs[22]);
+ __put_user(env->regs[R_RA], &gregs[23]);
+ __put_user(env->regs[R_FP], &gregs[24]);
+ __put_user(env->regs[R_GP], &gregs[25]);
+ __put_user(env->regs[R_EA], &gregs[27]);
+ __put_user(env->regs[R_SP], &gregs[28]);
+
+ return 0;
+}
+
+static int rt_restore_ucontext(CPUNios2State *env, struct target_ucontext *uc,
+ int *pr2)
+{
+ int temp;
+ abi_ulong off, frame_addr = env->regs[R_SP];
+ unsigned long *gregs = uc->tuc_mcontext.gregs;
+ int err;
+
+ /* Always make any pending restarted system calls return -EINTR */
+ /* current->restart_block.fn = do_no_restart_syscall; */
+
+ __get_user(temp, &uc->tuc_mcontext.version);
+ if (temp != MCONTEXT_VERSION) {
+ return 1;
+ }
+
+ /* restore passed registers */
+ __get_user(env->regs[1], &gregs[0]);
+ __get_user(env->regs[2], &gregs[1]);
+ __get_user(env->regs[3], &gregs[2]);
+ __get_user(env->regs[4], &gregs[3]);
+ __get_user(env->regs[5], &gregs[4]);
+ __get_user(env->regs[6], &gregs[5]);
+ __get_user(env->regs[7], &gregs[6]);
+ __get_user(env->regs[8], &gregs[7]);
+ __get_user(env->regs[9], &gregs[8]);
+ __get_user(env->regs[10], &gregs[9]);
+ __get_user(env->regs[11], &gregs[10]);
+ __get_user(env->regs[12], &gregs[11]);
+ __get_user(env->regs[13], &gregs[12]);
+ __get_user(env->regs[14], &gregs[13]);
+ __get_user(env->regs[15], &gregs[14]);
+ __get_user(env->regs[16], &gregs[15]);
+ __get_user(env->regs[17], &gregs[16]);
+ __get_user(env->regs[18], &gregs[17]);
+ __get_user(env->regs[19], &gregs[18]);
+ __get_user(env->regs[20], &gregs[19]);
+ __get_user(env->regs[21], &gregs[20]);
+ __get_user(env->regs[22], &gregs[21]);
+ __get_user(env->regs[23], &gregs[22]);
+ /* gregs[23] is handled below */
+ /* Verify, should this be settable */
+ __get_user(env->regs[R_FP], &gregs[24]);
+ /* Verify, should this be settable */
+ __get_user(env->regs[R_GP], &gregs[25]);
+ /* Not really necessary no user settable bits */
+ __get_user(temp, &gregs[26]);
+ __get_user(env->regs[R_EA], &gregs[27]);
+
+ __get_user(env->regs[R_RA], &gregs[23]);
+ __get_user(env->regs[R_SP], &gregs[28]);
+
+ off = offsetof(struct target_rt_sigframe, uc.tuc_stack);
+ err = do_sigaltstack(frame_addr + off, 0, get_sp_from_cpustate(env));
+ if (err == -EFAULT) {
+ return 1;
+ }
+
+ *pr2 = env->regs[2];
+ return 0;
+}
+
+static void *get_sigframe(struct target_sigaction *ka, CPUNios2State *env,
+ size_t frame_size)
+{
+ unsigned long usp;
+
+ /* Default to using normal stack. */
+ usp = env->regs[R_SP];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ usp = sigsp(usp, ka);
+
+ /* Verify, is it 32 or 64 bit aligned */
+ return (void *)((usp - frame_size) & -8UL);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set,
+ CPUNios2State *env)
+{
+ struct target_rt_sigframe *frame;
+ int i, err = 0;
+
+ frame = get_sigframe(ka, env, sizeof(*frame));
+
+ if (ka->sa_flags & SA_SIGINFO) {
+ tswap_siginfo(&frame->info, info);
+ }
+
+ /* Create the ucontext. */
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->regs[R_SP]), &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
+ err |= rt_setup_ucontext(&frame->uc, env);
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user((abi_ulong)set->sig[i],
+ (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ if (err) {
+ goto give_sigsegv;
+ }
+
+ /* Set up to return from userspace; jump to fixed address sigreturn
+ trampoline on kuser page. */
+ env->regs[R_RA] = (unsigned long) (0x1044);
+
+ /* Set up registers for signal handler */
+ env->regs[R_SP] = (unsigned long) frame;
+ env->regs[4] = (unsigned long) sig;
+ env->regs[5] = (unsigned long) &frame->info;
+ env->regs[6] = (unsigned long) &frame->uc;
+ env->regs[R_EA] = (unsigned long) ka->_sa_handler;
+ return;
+
+give_sigsegv:
+ if (sig == TARGET_SIGSEGV) {
+ ka->_sa_handler = TARGET_SIG_DFL;
+ }
+ force_sigsegv(sig);
+ return;
+}
+
+long do_sigreturn(CPUNios2State *env)
+{
+ trace_user_do_sigreturn(env, 0);
+ fprintf(stderr, "do_sigreturn: not implemented\n");
+ return -TARGET_ENOSYS;
+}
+
+long do_rt_sigreturn(CPUNios2State *env)
+{
+ /* Verify, can we follow the stack back */
+ abi_ulong frame_addr = env->regs[R_SP];
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+ int rval;
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ do_sigprocmask(SIG_SETMASK, &set, NULL);
+
+ if (rt_restore_ucontext(env, &frame->uc, &rval)) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return rval;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return 0;
+}
+/* TARGET_NIOS2 */
+
#elif defined(TARGET_OPENRISC)
struct target_sigcontext {
/* Set up a signal frame. */
static void setup_sigcontext(struct target_sigcontext *sc,
- CPUOpenRISCState *regs,
- unsigned long mask)
+ CPUOpenRISCState *regs,
+ unsigned long mask)
{
unsigned long usp = regs->gpr[1];
static inline unsigned long align_sigframe(unsigned long sp)
{
- unsigned long i;
- i = sp & ~3UL;
- return i;
+ return sp & ~3UL;
}
static inline abi_ulong get_sigframe(struct target_sigaction *ka,
abi_ulong info_addr, uc_addr;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
give_sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- if (sig == TARGET_SIGSEGV) {
- ka->_sa_handler = TARGET_SIG_DFL;
- }
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
long do_sigreturn(CPUOpenRISCState *env)
{
-
- qemu_log("do_sigreturn: not implemented\n");
+ trace_user_do_sigreturn(env, 0);
+ fprintf(stderr, "do_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
long do_rt_sigreturn(CPUOpenRISCState *env)
{
- qemu_log("do_rt_sigreturn: not implemented\n");
+ trace_user_do_rt_sigreturn(env, 0);
+ fprintf(stderr, "do_rt_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
/* TARGET_OPENRISC */
abi_ulong frame_addr;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
- qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
- (unsigned long long)frame_addr);
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
+ goto give_sigsegv;
}
- qemu_log("%s: 1\n", __FUNCTION__);
__put_user(set->sig[0], &frame->sc.oldmask[0]);
save_sigregs(env, &frame->sregs);
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ka->sa_flags & TARGET_SA_RESTORER) {
- env->regs[14] = (unsigned long)
- ka->sa_restorer | PSW_ADDR_AMODE;
+ env->regs[14] = (unsigned long)
+ ka->sa_restorer | PSW_ADDR_AMODE;
} else {
- env->regs[14] = (unsigned long)
- frame->retcode | PSW_ADDR_AMODE;
- __put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn,
- (uint16_t *)(frame->retcode));
+ env->regs[14] = (frame_addr + offsetof(sigframe, retcode))
+ | PSW_ADDR_AMODE;
+ __put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn,
+ (uint16_t *)(frame->retcode));
}
/* Set up backchain. */
env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr;
/* Place signal number on stack to allow backtrace from handler. */
- __put_user(env->regs[2], (int *) &frame->signo);
+ __put_user(env->regs[2], &frame->signo);
unlock_user_struct(frame, frame_addr, 1);
return;
give_sigsegv:
- qemu_log("%s: give_sigsegv\n", __FUNCTION__);
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
static void setup_rt_frame(int sig, struct target_sigaction *ka,
abi_ulong frame_addr;
frame_addr = get_sigframe(ka, env, sizeof *frame);
- qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
- (unsigned long long)frame_addr);
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
- qemu_log("%s: 1\n", __FUNCTION__);
tswap_siginfo(&frame->info, info);
/* Create the ucontext. */
__put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link);
__put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
__put_user(sas_ss_flags(get_sp_from_cpustate(env)),
- &frame->uc.tuc_stack.ss_flags);
+ &frame->uc.tuc_stack.ss_flags);
__put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
save_sigregs(env, &frame->uc.tuc_mcontext);
for (i = 0; i < TARGET_NSIG_WORDS; i++) {
__put_user((abi_ulong)set->sig[i],
- (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
+ (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
}
/* Set up to return from userspace. If provided, use a stub
return;
give_sigsegv:
- qemu_log("%s: give_sigsegv\n", __FUNCTION__);
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
static int
}
__get_user(env->psw.mask, &sc->regs.psw.mask);
- qemu_log("%s: sc->regs.psw.addr 0x%llx env->psw.addr 0x%llx\n",
- __FUNCTION__, (unsigned long long)sc->regs.psw.addr,
- (unsigned long long)env->psw.addr);
+ trace_user_s390x_restore_sigregs(env, (unsigned long long)sc->regs.psw.addr,
+ (unsigned long long)env->psw.addr);
__get_user(env->psw.addr, &sc->regs.psw.addr);
/* FIXME: 31-bit -> | PSW_ADDR_AMODE */
{
sigframe *frame;
abi_ulong frame_addr = env->regs[15];
- qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
- (unsigned long long)frame_addr);
target_sigset_t target_set;
sigset_t set;
+ trace_user_do_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
goto badframe;
}
__get_user(target_set.sig[0], &frame->sc.oldmask[0]);
target_to_host_sigset_internal(&set, &target_set);
- do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */
+ set_sigmask(&set); /* ~_BLOCKABLE? */
if (restore_sigregs(env, &frame->sregs)) {
goto badframe;
}
unlock_user_struct(frame, frame_addr, 0);
- return env->regs[2];
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUS390XState *env)
{
rt_sigframe *frame;
abi_ulong frame_addr = env->regs[15];
- qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
- (unsigned long long)frame_addr);
sigset_t set;
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
goto badframe;
}
target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */
+ set_sigmask(&set); /* ~_BLOCKABLE? */
if (restore_sigregs(env, &frame->uc.tuc_mcontext)) {
goto badframe;
goto badframe;
}
unlock_user_struct(frame, frame_addr, 0);
- return env->regs[2];
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
#elif defined(TARGET_PPC)
target_ulong mc_gregs[48];
/* Includes fpscr. */
uint64_t mc_fregs[33];
+#if defined(TARGET_PPC64)
+ /* Pointer to the vector regs */
+ target_ulong v_regs;
+#else
target_ulong mc_pad[2];
+#endif
/* We need to handle Altivec and SPE at the same time, which no
kernel needs to do. Fortunately, the kernel defines this bit to
be Altivec-register-large all the time, rather than trying to
uint32_t spe[33];
/* Altivec vector registers. The packing of VSCR and VRSAVE
varies depending on whether we're PPC64 or not: PPC64 splits
- them apart; PPC32 stuffs them together. */
+ them apart; PPC32 stuffs them together.
+ We also need to account for the VSX registers on PPC64
+ */
#if defined(TARGET_PPC64)
-#define QEMU_NVRREG 34
+#define QEMU_NVRREG (34 + 16)
+ /* On ppc64, this mcontext structure is naturally *unaligned*,
+ * or rather it is aligned on a 8 bytes boundary but not on
+ * a 16 bytes one. This pad fixes it up. This is also why the
+ * vector regs are referenced by the v_regs pointer above so
+ * any amount of padding can be added here
+ */
+ target_ulong pad;
#else
+ /* On ppc32, we are already aligned to 16 bytes */
#define QEMU_NVRREG 33
#endif
- ppc_avr_t altivec[QEMU_NVRREG];
+ /* We cannot use ppc_avr_t here as we do *not* want the implied
+ * 16-bytes alignment that would result from it. This would have
+ * the effect of making the whole struct target_mcontext aligned
+ * which breaks the layout of struct target_ucontext on ppc64.
+ */
+ uint64_t altivec[QEMU_NVRREG][2];
#undef QEMU_NVRREG
- } mc_vregs __attribute__((__aligned__(16)));
+ } mc_vregs;
};
/* See arch/powerpc/include/asm/sigcontext.h. */
#define TARGET_TRAMP_SIZE 6
struct target_rt_sigframe {
- /* sys_rt_sigreturn requires the ucontext be the first field */
- struct target_ucontext uc;
- target_ulong _unused[2];
- uint32_t trampoline[TARGET_TRAMP_SIZE];
- target_ulong pinfo; /* struct siginfo __user * */
- target_ulong puc; /* void __user * */
- struct target_siginfo info;
- /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
- char abigap[288];
+ /* sys_rt_sigreturn requires the ucontext be the first field */
+ struct target_ucontext uc;
+ target_ulong _unused[2];
+ uint32_t trampoline[TARGET_TRAMP_SIZE];
+ target_ulong pinfo; /* struct siginfo __user * */
+ target_ulong puc; /* void __user * */
+ struct target_siginfo info;
+ /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
+ char abigap[288];
} __attribute__((aligned(16)));
#else
CPUPPCState *env,
int frame_size)
{
- target_ulong oldsp, newsp;
+ target_ulong oldsp;
oldsp = env->gpr[1];
if ((ka->sa_flags & TARGET_SA_ONSTACK) &&
- (sas_ss_flags(oldsp) == 0)) {
+ (sas_ss_flags(oldsp) == 0)) {
oldsp = (target_sigaltstack_used.ss_sp
+ target_sigaltstack_used.ss_size);
}
- newsp = (oldsp - frame_size) & ~0xFUL;
-
- return newsp;
+ return (oldsp - frame_size) & ~0xFUL;
}
+#if ((defined(TARGET_WORDS_BIGENDIAN) && defined(HOST_WORDS_BIGENDIAN)) || \
+ (!defined(HOST_WORDS_BIGENDIAN) && !defined(TARGET_WORDS_BIGENDIAN)))
+#define PPC_VEC_HI 0
+#define PPC_VEC_LO 1
+#else
+#define PPC_VEC_HI 1
+#define PPC_VEC_LO 0
+#endif
+
+
static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame)
{
target_ulong msr = env->msr;
/* Save general registers. */
for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
- __put_user(env->gpr[i], &frame->mc_gregs[i]);
+ __put_user(env->gpr[i], &frame->mc_gregs[i]);
}
__put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
__put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
/* Save Altivec registers if necessary. */
if (env->insns_flags & PPC_ALTIVEC) {
+ uint32_t *vrsave;
for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
ppc_avr_t *avr = &env->avr[i];
- ppc_avr_t *vreg = &frame->mc_vregs.altivec[i];
+ ppc_avr_t *vreg = (ppc_avr_t *)&frame->mc_vregs.altivec[i];
- __put_user(avr->u64[0], &vreg->u64[0]);
- __put_user(avr->u64[1], &vreg->u64[1]);
+ __put_user(avr->u64[PPC_VEC_HI], &vreg->u64[0]);
+ __put_user(avr->u64[PPC_VEC_LO], &vreg->u64[1]);
}
/* Set MSR_VR in the saved MSR value to indicate that
frame->mc_vregs contains valid data. */
msr |= MSR_VR;
- __put_user((uint32_t)env->spr[SPR_VRSAVE],
- &frame->mc_vregs.altivec[32].u32[3]);
+#if defined(TARGET_PPC64)
+ vrsave = (uint32_t *)&frame->mc_vregs.altivec[33];
+ /* 64-bit needs to put a pointer to the vectors in the frame */
+ __put_user(h2g(frame->mc_vregs.altivec), &frame->v_regs);
+#else
+ vrsave = (uint32_t *)&frame->mc_vregs.altivec[32];
+#endif
+ __put_user((uint32_t)env->spr[SPR_VRSAVE], vrsave);
+ }
+
+ /* Save VSX second halves */
+ if (env->insns_flags2 & PPC2_VSX) {
+ uint64_t *vsregs = (uint64_t *)&frame->mc_vregs.altivec[34];
+ for (i = 0; i < ARRAY_SIZE(env->vsr); i++) {
+ __put_user(env->vsr[i], &vsregs[i]);
+ }
}
/* Save floating point registers. */
/* If doing signal return, restore the previous little-endian mode. */
if (sig)
- env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE);
+ env->msr = (env->msr & ~(1ull << MSR_LE)) | (msr & (1ull << MSR_LE));
/* Restore Altivec registers if necessary. */
if (env->insns_flags & PPC_ALTIVEC) {
+ ppc_avr_t *v_regs;
+ uint32_t *vrsave;
+#if defined(TARGET_PPC64)
+ uint64_t v_addr;
+ /* 64-bit needs to recover the pointer to the vectors from the frame */
+ __get_user(v_addr, &frame->v_regs);
+ v_regs = g2h(v_addr);
+#else
+ v_regs = (ppc_avr_t *)frame->mc_vregs.altivec;
+#endif
for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
ppc_avr_t *avr = &env->avr[i];
- ppc_avr_t *vreg = &frame->mc_vregs.altivec[i];
+ ppc_avr_t *vreg = &v_regs[i];
- __get_user(avr->u64[0], &vreg->u64[0]);
- __get_user(avr->u64[1], &vreg->u64[1]);
+ __get_user(avr->u64[PPC_VEC_HI], &vreg->u64[0]);
+ __get_user(avr->u64[PPC_VEC_LO], &vreg->u64[1]);
}
/* Set MSR_VEC in the saved MSR value to indicate that
frame->mc_vregs contains valid data. */
- __get_user(env->spr[SPR_VRSAVE],
- (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3]));
+#if defined(TARGET_PPC64)
+ vrsave = (uint32_t *)&v_regs[33];
+#else
+ vrsave = (uint32_t *)&v_regs[32];
+#endif
+ __get_user(env->spr[SPR_VRSAVE], vrsave);
+ }
+
+ /* Restore VSX second halves */
+ if (env->insns_flags2 & PPC2_VSX) {
+ uint64_t *vsregs = (uint64_t *)&frame->mc_vregs.altivec[34];
+ for (i = 0; i < ARRAY_SIZE(env->vsr); i++) {
+ __get_user(env->vsr[i], &vsregs[i]);
+ }
}
/* Restore floating point registers. */
}
}
+#if !defined(TARGET_PPC64)
static void setup_frame(int sig, struct target_sigaction *ka,
target_sigset_t *set, CPUPPCState *env)
{
struct target_sigcontext *sc;
target_ulong frame_addr, newsp;
int err = 0;
-#if defined(TARGET_PPC64)
- struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
-#endif
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
goto sigsegv;
sc = &frame->sctx;
__put_user(ka->_sa_handler, &sc->handler);
__put_user(set->sig[0], &sc->oldmask);
-#if TARGET_ABI_BITS == 64
- __put_user(set->sig[0] >> 32, &sc->_unused[3]);
-#else
__put_user(set->sig[1], &sc->_unused[3]);
-#endif
__put_user(h2g(&frame->mctx), &sc->regs);
__put_user(sig, &sc->signal);
env->gpr[3] = sig;
env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx);
-#if defined(TARGET_PPC64)
- if (get_ppc64_abi(image) < 2) {
- /* ELFv1 PPC64 function pointers are pointers to OPD entries. */
- struct target_func_ptr *handler =
- (struct target_func_ptr *)g2h(ka->_sa_handler);
- env->nip = tswapl(handler->entry);
- env->gpr[2] = tswapl(handler->toc);
- } else {
- /* ELFv2 PPC64 function pointers are entry points, but R12
- * must also be set */
- env->nip = tswapl((target_ulong) ka->_sa_handler);
- env->gpr[12] = env->nip;
- }
-#else
env->nip = (target_ulong) ka->_sa_handler;
-#endif
/* Signal handlers are entered in big-endian mode. */
- env->msr &= ~MSR_LE;
+ env->msr &= ~(1ull << MSR_LE);
unlock_user_struct(frame, frame_addr, 1);
return;
sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- qemu_log("segfaulting from setup_frame\n");
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
+#endif /* !defined(TARGET_PPC64) */
static void setup_rt_frame(int sig, struct target_sigaction *ka,
target_siginfo_t *info,
target_ulong rt_sf_addr, newsp = 0;
int i, err = 0;
#if defined(TARGET_PPC64)
+ struct target_sigcontext *sc = 0;
struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
#endif
#if defined(TARGET_PPC64)
mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
trampptr = &rt_sf->trampoline[0];
+
+ sc = &rt_sf->uc.tuc_sigcontext;
+ __put_user(h2g(mctx), &sc->regs);
+ __put_user(sig, &sc->signal);
#else
mctx = &rt_sf->uc.tuc_mcontext;
trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
#endif
/* Signal handlers are entered in big-endian mode. */
- env->msr &= ~MSR_LE;
+ env->msr &= ~(1ull << MSR_LE);
unlock_user_struct(rt_sf, rt_sf_addr, 1);
return;
sigsegv:
unlock_user_struct(rt_sf, rt_sf_addr, 1);
- qemu_log("segfaulting from setup_rt_frame\n");
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
+#if !defined(TARGET_PPC64)
long do_sigreturn(CPUPPCState *env)
{
struct target_sigcontext *sc = NULL;
__get_user(set.sig[1], &sc->_unused[3]);
#endif
target_to_host_sigset_internal(&blocked, &set);
- do_sigprocmask(SIG_SETMASK, &blocked, NULL);
+ set_sigmask(&blocked);
__get_user(sr_addr, &sc->regs);
if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1))
sigsegv:
unlock_user_struct(sr, sr_addr, 1);
unlock_user_struct(sc, sc_addr, 1);
- qemu_log("segfaulting from do_sigreturn\n");
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
+#endif /* !defined(TARGET_PPC64) */
/* See arch/powerpc/kernel/signal_32.c. */
static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int sig)
return 1;
target_to_host_sigset_internal(&blocked, &set);
- do_sigprocmask(SIG_SETMASK, &blocked, NULL);
+ set_sigmask(&blocked);
restore_user_regs(env, mcp, sig);
unlock_user_struct(mcp, mcp_addr, 1);
sigsegv:
unlock_user_struct(rt_sf, rt_sf_addr, 1);
- qemu_log("segfaulting from do_rt_sigreturn\n");
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
#elif defined(TARGET_M68K)
abi_ulong extramask[TARGET_NSIG_WORDS-1];
struct target_sigcontext sc;
};
-
+
typedef int target_greg_t;
#define TARGET_NGREG 18
typedef target_greg_t target_gregset_t[TARGET_NGREG];
};
static void setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env,
- abi_ulong mask)
+ abi_ulong mask)
{
__put_user(mask, &sc->sc_mask);
__put_user(env->aregs[7], &sc->sc_usp);
}
static void
-restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc, int *pd0)
+restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc)
{
int temp;
__get_user(env->aregs[7], &sc->sc_usp);
+ __get_user(env->dregs[0], &sc->sc_d0);
__get_user(env->dregs[1], &sc->sc_d1);
__get_user(env->aregs[0], &sc->sc_a0);
__get_user(env->aregs[1], &sc->sc_a1);
__get_user(env->pc, &sc->sc_pc);
__get_user(temp, &sc->sc_sr);
env->sr = (env->sr & 0xff00) | (temp & 0xff);
-
- *pd0 = tswapl(sc->sc_d0);
}
/*
int i;
frame_addr = get_sigframe(ka, env, sizeof *frame);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
__put_user(sig, &frame->sig);
/* moveq #,d0; trap #0 */
__put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
- (uint32_t *)(frame->retcode));
+ (uint32_t *)(frame->retcode));
/* Set up to return from userspace */
return;
give_sigsegv:
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
static inline int target_rt_setup_ucontext(struct target_ucontext *uc,
return 0;
}
-
+
static inline int target_rt_restore_ucontext(CPUM68KState *env,
- struct target_ucontext *uc,
- int *pd0)
+ struct target_ucontext *uc)
{
int temp;
target_greg_t *gregs = uc->tuc_mcontext.gregs;
__get_user(temp, &gregs[17]);
env->sr = (env->sr & 0xff00) | (temp & 0xff);
- *pd0 = env->dregs[0];
return 0;
badframe:
int i;
frame_addr = get_sigframe(ka, env, sizeof *frame);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
__put_user(sig, &frame->sig);
__put_user(target_sigaltstack_used.ss_sp,
&frame->uc.tuc_stack.ss_sp);
__put_user(sas_ss_flags(env->aregs[7]),
- &frame->uc.tuc_stack.ss_flags);
+ &frame->uc.tuc_stack.ss_flags);
__put_user(target_sigaltstack_used.ss_size,
&frame->uc.tuc_stack.ss_size);
err |= target_rt_setup_ucontext(&frame->uc, env);
if (err)
- goto give_sigsegv;
+ goto give_sigsegv;
for(i = 0; i < TARGET_NSIG_WORDS; i++) {
__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
give_sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- force_sig(TARGET_SIGSEGV);
+ force_sigsegv(sig);
}
long do_sigreturn(CPUM68KState *env)
abi_ulong frame_addr = env->aregs[7] - 4;
target_sigset_t target_set;
sigset_t set;
- int d0, i;
+ int i;
+ trace_user_do_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
}
target_to_host_sigset_internal(&set, &target_set);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
/* restore registers */
- restore_sigcontext(env, &frame->sc, &d0);
+ restore_sigcontext(env, &frame->sc);
unlock_user_struct(frame, frame_addr, 0);
- return d0;
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUM68KState *env)
abi_ulong frame_addr = env->aregs[7] - 4;
target_sigset_t target_set;
sigset_t set;
- int d0;
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
target_to_host_sigset_internal(&set, &target_set);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
/* restore registers */
- if (target_rt_restore_ucontext(env, &frame->uc, &d0))
+ if (target_rt_restore_ucontext(env, &frame->uc))
goto badframe;
if (do_sigaltstack(frame_addr +
goto badframe;
unlock_user_struct(frame, frame_addr, 0);
- return d0;
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);
force_sig(TARGET_SIGSEGV);
- return 0;
+ return -TARGET_QEMU_ESIGRETURN;
}
#elif defined(TARGET_ALPHA)
#define INSN_CALLSYS 0x00000083
static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env,
- abi_ulong frame_addr, target_sigset_t *set)
+ abi_ulong frame_addr, target_sigset_t *set)
{
int i;
}
static void restore_sigcontext(CPUAlphaState *env,
- struct target_sigcontext *sc)
+ struct target_sigcontext *sc)
{
uint64_t fpcr;
int i;
int err = 0;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
unlock_user_struct(frame, frame_addr, 1);
if (err) {
- give_sigsegv:
- if (sig == TARGET_SIGSEGV) {
- ka->_sa_handler = TARGET_SIG_DFL;
- }
- force_sig(TARGET_SIGSEGV);
+give_sigsegv:
+ force_sigsegv(sig);
+ return;
}
env->ir[IR_RA] = r26;
int i, err = 0;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
}
if (err) {
- give_sigsegv:
- if (sig == TARGET_SIGSEGV) {
- ka->_sa_handler = TARGET_SIG_DFL;
- }
- force_sig(TARGET_SIGSEGV);
+give_sigsegv:
+ force_sigsegv(sig);
+ return;
}
env->ir[IR_RA] = r26;
__get_user(target_set.sig[0], &sc->sc_mask);
target_to_host_sigset_internal(&set, &target_set);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
restore_sigcontext(env, sc);
unlock_user_struct(sc, sc_addr, 0);
- return env->ir[IR_V0];
+ return -TARGET_QEMU_ESIGRETURN;
- badframe:
+badframe:
force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
long do_rt_sigreturn(CPUAlphaState *env)
struct target_rt_sigframe *frame;
sigset_t set;
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
goto badframe;
}
target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
restore_sigcontext(env, &frame->uc.tuc_mcontext);
if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
}
unlock_user_struct(frame, frame_addr, 0);
- return env->ir[IR_V0];
+ return -TARGET_QEMU_ESIGRETURN;
- badframe:
+badframe:
unlock_user_struct(frame, frame_addr, 0);
force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
#elif defined(TARGET_TILEGX)
unsigned char save_area[16]; /* caller save area */
struct target_siginfo info;
struct target_ucontext uc;
+ abi_ulong retcode[2];
};
+#define INSN_MOVELI_R10_139 0x00045fe551483000ULL /* { moveli r10, 139 } */
+#define INSN_SWINT1 0x286b180051485000ULL /* { swint1 } */
+
+
static void setup_sigcontext(struct target_sigcontext *sc,
CPUArchState *env, int signo)
{
unsigned long restorer;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
__put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo);
- restorer = (unsigned long) do_rt_sigreturn;
if (ka->sa_flags & TARGET_SA_RESTORER) {
- restorer = (unsigned long) ka->sa_restorer;
+ restorer = (unsigned long) ka->sa_restorer;
+ } else {
+ __put_user(INSN_MOVELI_R10_139, &frame->retcode[0]);
+ __put_user(INSN_SWINT1, &frame->retcode[1]);
+ restorer = frame_addr + offsetof(struct target_rt_sigframe, retcode);
}
env->pc = (unsigned long) ka->_sa_handler;
env->regs[TILEGX_R_SP] = (unsigned long) frame;
return;
give_sigsegv:
- if (sig == TARGET_SIGSEGV) {
- ka->_sa_handler = TARGET_SIG_DFL;
- }
- force_sig(TARGET_SIGSEGV /* , current */);
+ force_sigsegv(sig);
}
long do_rt_sigreturn(CPUTLGState *env)
struct target_rt_sigframe *frame;
sigset_t set;
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
goto badframe;
}
target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
+ set_sigmask(&set);
restore_sigcontext(env, &frame->uc.tuc_mcontext);
if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
}
unlock_user_struct(frame, frame_addr, 0);
- return env->regs[TILEGX_R_RE];
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);
force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+#elif defined(TARGET_HPPA)
+
+struct target_sigcontext {
+ abi_ulong sc_flags;
+ abi_ulong sc_gr[32];
+ uint64_t sc_fr[32];
+ abi_ulong sc_iasq[2];
+ abi_ulong sc_iaoq[2];
+ abi_ulong sc_sar;
+};
+
+struct target_ucontext {
+ abi_uint tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ abi_uint pad[1];
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask;
+};
+
+struct target_rt_sigframe {
+ abi_uint tramp[9];
+ target_siginfo_t info;
+ struct target_ucontext uc;
+ /* hidden location of upper halves of pa2.0 64-bit gregs */
+};
+
+static void setup_sigcontext(struct target_sigcontext *sc, CPUArchState *env)
+{
+ int flags = 0;
+ int i;
+
+ /* ??? if on_sig_stack, flags |= 1 (PARISC_SC_FLAG_ONSTACK). */
+
+ if (env->iaoq_f < TARGET_PAGE_SIZE) {
+ /* In the gateway page, executing a syscall. */
+ flags |= 2; /* PARISC_SC_FLAG_IN_SYSCALL */
+ __put_user(env->gr[31], &sc->sc_iaoq[0]);
+ __put_user(env->gr[31] + 4, &sc->sc_iaoq[1]);
+ } else {
+ __put_user(env->iaoq_f, &sc->sc_iaoq[0]);
+ __put_user(env->iaoq_b, &sc->sc_iaoq[1]);
+ }
+ __put_user(0, &sc->sc_iasq[0]);
+ __put_user(0, &sc->sc_iasq[1]);
+ __put_user(flags, &sc->sc_flags);
+
+ __put_user(cpu_hppa_get_psw(env), &sc->sc_gr[0]);
+ for (i = 1; i < 32; ++i) {
+ __put_user(env->gr[i], &sc->sc_gr[i]);
+ }
+
+ __put_user((uint64_t)env->fr0_shadow << 32, &sc->sc_fr[0]);
+ for (i = 1; i < 32; ++i) {
+ __put_user(env->fr[i], &sc->sc_fr[i]);
+ }
+
+ __put_user(env->sar, &sc->sc_sar);
+}
+
+static void restore_sigcontext(CPUArchState *env, struct target_sigcontext *sc)
+{
+ target_ulong psw;
+ int i;
+
+ __get_user(psw, &sc->sc_gr[0]);
+ cpu_hppa_put_psw(env, psw);
+
+ for (i = 1; i < 32; ++i) {
+ __get_user(env->gr[i], &sc->sc_gr[i]);
+ }
+ for (i = 0; i < 32; ++i) {
+ __get_user(env->fr[i], &sc->sc_fr[i]);
+ }
+ cpu_hppa_loaded_fr0(env);
+
+ __get_user(env->iaoq_f, &sc->sc_iaoq[0]);
+ __get_user(env->iaoq_b, &sc->sc_iaoq[1]);
+ __get_user(env->sar, &sc->sc_sar);
+}
+
+/* No, this doesn't look right, but it's copied straight from the kernel. */
+#define PARISC_RT_SIGFRAME_SIZE32 \
+ ((sizeof(struct target_rt_sigframe) + 48 + 64) & -64)
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUArchState *env)
+{
+ abi_ulong frame_addr, sp, haddr;
+ struct target_rt_sigframe *frame;
+ int i;
+
+ sp = env->gr[30];
+ if (ka->sa_flags & TARGET_SA_ONSTACK) {
+ if (sas_ss_flags(sp) == 0) {
+ sp = (target_sigaltstack_used.ss_sp + 0x7f) & ~0x3f;
+ }
+ }
+ frame_addr = QEMU_ALIGN_UP(sp, 64);
+ sp = frame_addr + PARISC_RT_SIGFRAME_SIZE32;
+
+ trace_user_setup_rt_frame(env, frame_addr);
+
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ tswap_siginfo(&frame->info, info);
+ frame->uc.tuc_flags = 0;
+ frame->uc.tuc_link = 0;
+
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &frame->uc.tuc_stack.ss_size);
+
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ setup_sigcontext(&frame->uc.tuc_mcontext, env);
+
+ __put_user(0x34190000, frame->tramp + 0); /* ldi 0,%r25 */
+ __put_user(0x3414015a, frame->tramp + 1); /* ldi __NR_rt_sigreturn,%r20 */
+ __put_user(0xe4008200, frame->tramp + 2); /* be,l 0x100(%sr2,%r0) */
+ __put_user(0x08000240, frame->tramp + 3); /* nop */
+
+ unlock_user_struct(frame, frame_addr, 1);
+
+ env->gr[2] = h2g(frame->tramp);
+ env->gr[30] = sp;
+ env->gr[26] = sig;
+ env->gr[25] = h2g(&frame->info);
+ env->gr[24] = h2g(&frame->uc);
+
+ haddr = ka->_sa_handler;
+ if (haddr & 2) {
+ /* Function descriptor. */
+ target_ulong *fdesc, dest;
+
+ haddr &= -4;
+ if (!lock_user_struct(VERIFY_READ, fdesc, haddr, 1)) {
+ goto give_sigsegv;
+ }
+ __get_user(dest, fdesc);
+ __get_user(env->gr[19], fdesc + 1);
+ unlock_user_struct(fdesc, haddr, 1);
+ haddr = dest;
+ }
+ env->iaoq_f = haddr;
+ env->iaoq_b = haddr + 4;;
+ return;
+
+ give_sigsegv:
+ force_sigsegv(sig);
+}
+
+long do_rt_sigreturn(CPUArchState *env)
+{
+ abi_ulong frame_addr = env->gr[30] - PARISC_RT_SIGFRAME_SIZE32;
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ set_sigmask(&set);
+
+ restore_sigcontext(env, &frame->uc.tuc_mcontext);
+ unlock_user_struct(frame, frame_addr, 0);
+
+ if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
+ uc.tuc_stack),
+ 0, env->gr[30]) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+ badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
}
#else
static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUArchState *env)
+ target_sigset_t *set, CPUArchState *env)
{
fprintf(stderr, "setup_frame: not implemented\n");
}
static void setup_rt_frame(int sig, struct target_sigaction *ka,
target_siginfo_t *info,
- target_sigset_t *set, CPUArchState *env)
+ target_sigset_t *set, CPUArchState *env)
{
fprintf(stderr, "setup_rt_frame: not implemented\n");
}
#endif
-void process_pending_signals(CPUArchState *cpu_env)
+static void handle_pending_signal(CPUArchState *cpu_env, int sig,
+ struct emulated_sigtable *k)
{
CPUState *cpu = ENV_GET_CPU(cpu_env);
- int sig;
abi_ulong handler;
- sigset_t set, old_set;
+ sigset_t set;
target_sigset_t target_old_set;
- struct emulated_sigtable *k;
struct target_sigaction *sa;
- struct sigqueue *q;
TaskState *ts = cpu->opaque;
- if (!ts->signal_pending)
- return;
-
- /* FIXME: This is not threadsafe. */
- k = ts->sigtab;
- for(sig = 1; sig <= TARGET_NSIG; sig++) {
- if (k->pending)
- goto handle_signal;
- k++;
- }
- /* if no signal is pending, just return */
- ts->signal_pending = 0;
- return;
-
- handle_signal:
-#ifdef DEBUG_SIGNAL
- fprintf(stderr, "qemu: process signal %d\n", sig);
-#endif
+ trace_user_handle_signal(cpu_env, sig);
/* dequeue signal */
- q = k->first;
- k->first = q->next;
- if (!k->first)
- k->pending = 0;
+ k->pending = 0;
sig = gdb_handlesig(cpu, sig);
if (!sig) {
handler = sa->_sa_handler;
}
- if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) {
- /* Guest has blocked SIGSEGV but we got one anyway. Assume this
- * is a forced SIGSEGV (ie one the kernel handles via force_sig_info
- * because it got a real MMU fault), and treat as if default handler.
- */
- handler = TARGET_SIG_DFL;
+ if (do_strace) {
+ print_taken_signal(sig, &k->info);
}
if (handler == TARGET_SIG_DFL) {
sig != TARGET_SIGURG &&
sig != TARGET_SIGWINCH &&
sig != TARGET_SIGCONT) {
- force_sig(sig);
+ dump_core_and_abort(sig);
}
} else if (handler == TARGET_SIG_IGN) {
/* ignore sig */
} else if (handler == TARGET_SIG_ERR) {
- force_sig(sig);
+ dump_core_and_abort(sig);
} else {
/* compute the blocked signals during the handler execution */
+ sigset_t *blocked_set;
+
target_to_host_sigset(&set, &sa->sa_mask);
/* SA_NODEFER indicates that the current signal should not be
blocked during the handler */
if (!(sa->sa_flags & TARGET_SA_NODEFER))
sigaddset(&set, target_to_host_signal(sig));
- /* block signals in the handler using Linux */
- do_sigprocmask(SIG_BLOCK, &set, &old_set);
/* save the previous blocked signal state to restore it at the
end of the signal execution (see do_sigreturn) */
- host_to_target_sigset_internal(&target_old_set, &old_set);
+ host_to_target_sigset_internal(&target_old_set, &ts->signal_mask);
+
+ /* block signals in the handler */
+ blocked_set = ts->in_sigsuspend ?
+ &ts->sigsuspend_mask : &ts->signal_mask;
+ sigorset(&ts->signal_mask, blocked_set, &set);
+ ts->in_sigsuspend = 0;
/* if the CPU is in VM86 mode, we restore the 32 bit values */
#if defined(TARGET_I386) && !defined(TARGET_X86_64)
#endif
/* prepare the stack frame of the virtual CPU */
#if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64) \
- || defined(TARGET_OPENRISC) || defined(TARGET_TILEGX)
+ || defined(TARGET_OPENRISC) || defined(TARGET_TILEGX) \
+ || defined(TARGET_PPC64) || defined(TARGET_HPPA) \
+ || defined(TARGET_NIOS2)
/* These targets do not have traditional signals. */
- setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
+ setup_rt_frame(sig, sa, &k->info, &target_old_set, cpu_env);
#else
if (sa->sa_flags & TARGET_SA_SIGINFO)
- setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
+ setup_rt_frame(sig, sa, &k->info, &target_old_set, cpu_env);
else
setup_frame(sig, sa, &target_old_set, cpu_env);
#endif
- if (sa->sa_flags & TARGET_SA_RESETHAND)
+ if (sa->sa_flags & TARGET_SA_RESETHAND) {
sa->_sa_handler = TARGET_SIG_DFL;
+ }
}
- if (q != &k->info)
- free_sigqueue(cpu_env, q);
+}
+
+void process_pending_signals(CPUArchState *cpu_env)
+{
+ CPUState *cpu = ENV_GET_CPU(cpu_env);
+ int sig;
+ TaskState *ts = cpu->opaque;
+ sigset_t set;
+ sigset_t *blocked_set;
+
+ while (atomic_read(&ts->signal_pending)) {
+ /* FIXME: This is not threadsafe. */
+ sigfillset(&set);
+ sigprocmask(SIG_SETMASK, &set, 0);
+
+ restart_scan:
+ sig = ts->sync_signal.pending;
+ if (sig) {
+ /* Synchronous signals are forced,
+ * see force_sig_info() and callers in Linux
+ * Note that not all of our queue_signal() calls in QEMU correspond
+ * to force_sig_info() calls in Linux (some are send_sig_info()).
+ * However it seems like a kernel bug to me to allow the process
+ * to block a synchronous signal since it could then just end up
+ * looping round and round indefinitely.
+ */
+ if (sigismember(&ts->signal_mask, target_to_host_signal_table[sig])
+ || sigact_table[sig - 1]._sa_handler == TARGET_SIG_IGN) {
+ sigdelset(&ts->signal_mask, target_to_host_signal_table[sig]);
+ sigact_table[sig - 1]._sa_handler = TARGET_SIG_DFL;
+ }
+
+ handle_pending_signal(cpu_env, sig, &ts->sync_signal);
+ }
+
+ for (sig = 1; sig <= TARGET_NSIG; sig++) {
+ blocked_set = ts->in_sigsuspend ?
+ &ts->sigsuspend_mask : &ts->signal_mask;
+
+ if (ts->sigtab[sig - 1].pending &&
+ (!sigismember(blocked_set,
+ target_to_host_signal_table[sig]))) {
+ handle_pending_signal(cpu_env, sig, &ts->sigtab[sig - 1]);
+ /* Restart scan from the beginning, as handle_pending_signal
+ * might have resulted in a new synchronous signal (eg SIGSEGV).
+ */
+ goto restart_scan;
+ }
+ }
+
+ /* if no signal is pending, unblock signals and recheck (the act
+ * of unblocking might cause us to take another host signal which
+ * will set signal_pending again).
+ */
+ atomic_set(&ts->signal_pending, 0);
+ ts->in_sigsuspend = 0;
+ set = ts->signal_mask;
+ sigdelset(&set, SIGSEGV);
+ sigdelset(&set, SIGBUS);
+ sigprocmask(SIG_SETMASK, &set, 0);
+ }
+ ts->in_sigsuspend = 0;
}
projects / mirror_qemu.git / blobdiff