* exceptions.cc (interrupt_setup): Move actions from setup_handler to here.
(setup_handler): Move actions after a successful interrupt to interrupt_setup. * fork.cc (vfork): Augment debugging output. * sigproc.cc (proc_subproc): Ditto. * spawn.cc (spawn_guts): Ditto. Correctly fill out progname when spawn NO_WAIT. Call signal handler when a signal arrives. * sigproc.h: Declare a function.
This commit is contained in:
Christopher Faylor
@ -684,6 +684,10 @@ interrupt_setup (int sig, void *handler, DWORD retaddr, DWORD *retaddr_on_stack,
|
||||
myself->stopsig = 0;
|
||||
myself->process_state |= PID_STOPPED;
|
||||
}
|
||||
/* Clear any waiting threads prior to dispatching to handler function */
|
||||
proc_subproc (PROC_CLEARWAIT, 1);
|
||||
int res = SetEvent (signal_arrived); // For an EINTR case
|
||||
sigproc_printf ("armed signal_arrived %p, res %d", signal_arrived, res);
|
||||
}
|
||||
|
||||
static bool interrupt_now (CONTEXT *, int, void *, struct sigaction&) __attribute__((regparm(3)));
|
||||
@ -692,7 +696,7 @@ interrupt_now (CONTEXT *ctx, int sig, void *handler, struct sigaction& siga)
|
||||
{
|
||||
interrupt_setup (sig, handler, ctx->Eip, 0, siga);
|
||||
ctx->Eip = (DWORD) sigdelayed;
|
||||
SetThreadContext (myself->getthread2signal (), ctx); /* Restart the thread */
|
||||
SetThreadContext (myself->getthread2signal (), ctx); /* Restart the thread in a new location */
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -853,7 +857,9 @@ setup_handler (int sig, void *handler, struct sigaction& siga)
|
||||
}
|
||||
|
||||
set_pending:
|
||||
if (!interrupted)
|
||||
if (interrupted)
|
||||
res = 1;
|
||||
else
|
||||
{
|
||||
pending_signals = 1; /* FIXME: Probably need to be more tricky here */
|
||||
sig_set_pending (sig);
|
||||
@ -861,13 +867,6 @@ setup_handler (int sig, void *handler, struct sigaction& siga)
|
||||
Sleep (0); /* Hopefully, other process will be waking up soon. */
|
||||
sigproc_printf ("couldn't send signal %d", sig);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Clear any waiting threads prior to dispatching to handler function */
|
||||
proc_subproc (PROC_CLEARWAIT, 1);
|
||||
res = SetEvent (signal_arrived); // For an EINTR case
|
||||
sigproc_printf ("armed signal_arrived %p, res %d", signal_arrived, res);
|
||||
}
|
||||
|
||||
if (th)
|
||||
LeaveCriticalSection (&th->lock);
|
||||
@ -1157,68 +1156,61 @@ void unused_sig_wrapper ()
|
||||
to restore any mask, restores any potentially clobbered registers
|
||||
and returns to original caller. */
|
||||
__asm__ volatile ("\n\
|
||||
.text\n\
|
||||
\n\
|
||||
_sigreturn:\n\
|
||||
addl $4,%%esp # Remove argument\n\
|
||||
movl %%esp,%%ebp\n\
|
||||
addl $36,%%ebp\n\
|
||||
\n\
|
||||
cmpl $0,%4 # Did a signal come in?\n\
|
||||
jz 1f # No, if zero\n\
|
||||
call _call_signal_handler_now@0 # yes handle the signal\n\
|
||||
\n\
|
||||
# FIXME: There is a race here. The signal handler could set up\n\
|
||||
# the sigsave structure between _call_signal_handler and the\n\
|
||||
# end of _set_process_mask. This would make cygwin detect an\n\
|
||||
# incorrect signal mask.\n\
|
||||
\n\
|
||||
1: call _set_process_mask@4\n\
|
||||
popl %%eax # saved errno\n\
|
||||
testl %%eax,%%eax # Is it < 0\n\
|
||||
jl 2f # yup. ignore it\n\
|
||||
movl %1,%%ebx\n\
|
||||
movl %%eax,(%%ebx)\n\
|
||||
2: popl %%eax\n\
|
||||
popl %%ebx\n\
|
||||
popl %%ecx\n\
|
||||
popl %%edx\n\
|
||||
popl %%edi\n\
|
||||
popl %%esi\n\
|
||||
popf\n\
|
||||
popl %%ebp\n\
|
||||
ret\n\
|
||||
\n\
|
||||
__no_sig_start:\n\
|
||||
_sigdelayed:\n\
|
||||
pushl %2 # original return address\n\
|
||||
_sigdelayed0:\n\
|
||||
pushl %%ebp\n\
|
||||
movl %%esp,%%ebp\n\
|
||||
pushf\n\
|
||||
pushl %%esi\n\
|
||||
pushl %%edi\n\
|
||||
pushl %%edx\n\
|
||||
pushl %%ecx\n\
|
||||
pushl %%ebx\n\
|
||||
pushl %%eax\n\
|
||||
pushl %7 # saved errno\n\
|
||||
pushl %3 # oldmask\n\
|
||||
pushl %4 # signal argument\n\
|
||||
pushl $_sigreturn\n\
|
||||
\n\
|
||||
call _reset_signal_arrived@0\n\
|
||||
pushl %5 # signal number\n\
|
||||
pushl %8 # newmask\n\
|
||||
movl $0,%0 # zero the signal number as a\n\
|
||||
.text \n\
|
||||
_sigreturn: \n\
|
||||
addl $4,%%esp # Remove argument \n\
|
||||
movl %%esp,%%ebp \n\
|
||||
addl $36,%%ebp \n\
|
||||
call _set_process_mask@4 \n\
|
||||
\n\
|
||||
cmpl $0,%4 # Did a signal come in? \n\
|
||||
jz 1f # No, if zero \n\
|
||||
call _call_signal_handler_now@0 # yes handle the signal \n\
|
||||
\n\
|
||||
1: popl %%eax # saved errno \n\
|
||||
testl %%eax,%%eax # Is it < 0 \n\
|
||||
jl 2f # yup. ignore it \n\
|
||||
movl %1,%%ebx \n\
|
||||
movl %%eax,(%%ebx) \n\
|
||||
2: popl %%eax \n\
|
||||
popl %%ebx \n\
|
||||
popl %%ecx \n\
|
||||
popl %%edx \n\
|
||||
popl %%edi \n\
|
||||
popl %%esi \n\
|
||||
popf \n\
|
||||
popl %%ebp \n\
|
||||
ret \n\
|
||||
\n\
|
||||
__no_sig_start: \n\
|
||||
_sigdelayed: \n\
|
||||
pushl %2 # original return address \n\
|
||||
_sigdelayed0: \n\
|
||||
pushl %%ebp \n\
|
||||
movl %%esp,%%ebp \n\
|
||||
pushf \n\
|
||||
pushl %%esi \n\
|
||||
pushl %%edi \n\
|
||||
pushl %%edx \n\
|
||||
pushl %%ecx \n\
|
||||
pushl %%ebx \n\
|
||||
pushl %%eax \n\
|
||||
pushl %7 # saved errno \n\
|
||||
pushl %3 # oldmask \n\
|
||||
pushl %4 # signal argument \n\
|
||||
pushl $_sigreturn \n\
|
||||
\n\
|
||||
call _reset_signal_arrived@0 \n\
|
||||
pushl %5 # signal number \n\
|
||||
pushl %8 # newmask \n\
|
||||
movl $0,%0 # zero the signal number as a \n\
|
||||
# flag to the signal handler thread\n\
|
||||
# that it is ok to set up sigsave\n\
|
||||
\n\
|
||||
call _set_process_mask@4\n\
|
||||
popl %%eax\n\
|
||||
jmp *%%eax\n\
|
||||
__no_sig_end:\n\
|
||||
\n\
|
||||
\n\
|
||||
call _set_process_mask@4 \n\
|
||||
popl %%eax \n\
|
||||
jmp *%%eax \n\
|
||||
__no_sig_end: \n\
|
||||
" : "=m" (sigsave.sig) : "m" (&_impure_ptr->_errno),
|
||||
"g" (sigsave.retaddr), "g" (sigsave.oldmask), "g" (sigsave.sig),
|
||||
"g" (sigsave.func), "o" (pid_offset), "g" (sigsave.saved_errno), "g" (sigsave.newmask)
|
||||
|
||||
Reference in New Issue
Block a user