/*
* Process the iBCS sigignore
*
* This is basically a signal (...,SIG_IGN) call.
*/
void
abi_sigignore(struct pt_regs *regp)
{
struct sigaction act, oact;
int error, sig;
mm_segment_t fs;
if (!abi_signo(regp, &sig))
return;
sigemptyset(&act.sa_mask);
act.sa_handler = SIG_IGN;
act.sa_flags = SA_SIGINFO;
act.sa_restorer = (void *)abi_sigret(__NR_rt_sigaction);
if (act.sa_restorer) act.sa_flags |= SA_RESTORER;
fs = get_fs();
set_fs(get_ds());
error = SYS(rt_sigaction,sig, &act, &oact, sizeof(sigset_t));
set_fs(fs);
if (error < 0)
set_error(regp, iABI_errors(-error));
}
void abi_sigpause (struct pt_regs * regs)
{
old_sigset_t newset;
int sig, answer;
#ifdef __sparc__
printk(KERN_ERR "Sparc/iBCS: sigpause not yet implemented\n");
#else
if (!abi_signo(regs, &sig))
return;
newset = ~0UL;
newset &= (1UL << (sig-1));
answer = SYS(sigsuspend)(0, current->blocked,
newset, regs->esi, regs->edi,
regs->ebp, regs->eax,
regs->xds, regs->xes,
regs->orig_eax,
regs->eip, regs->xcs, regs->eflags,
regs->esp, regs->xss);
if (answer < 0) {
set_error(regs, iABI_errors(-answer));
}
#endif
}
/*
* Process the iBCS sigset function.
*
* This is basically the same as the signal() routine with the exception
* that it will accept a SIG_HOLD parameter.
*
* A SIG_HOLD will defer the processing of the signal until a sigrelse()
* function is called.
*/
int abi_sigset (struct pt_regs * regs)
{
sigset_t newmask, oldmask;
__sighandler_t vec;
int sig, answer;
mm_segment_t old_fs;
if (abi_signo (regs, &sig)) {
vec = (__sighandler_t) SECOND_PARAM;
if (vec != SIG_HOLD) {
deactivate_signal(current, sig);
abi_sig_handler (regs, sig, vec, 0);
} else {
/*
* Process the hold function
*/
sigemptyset (&newmask);
sigaddset (&newmask, sig);
TO_KERNEL (old_fs);
answer = SYS(rt_sigprocmask) (SIG_BLOCK,
&newmask, &oldmask,
sizeof(sigset_t));
FROM_KERNEL (old_fs);
if (answer < 0) {
set_error (regs, iABI_errors (-answer));
}
}
}
return 0;
}
/*
* Process the signal() function from iBCS
*/
int abi_signal (struct pt_regs * regs)
{
__sighandler_t vec;
int sig;
if (abi_signo (regs, &sig)) {
vec = (__sighandler_t) SECOND_PARAM;
abi_sig_handler (regs, sig, vec, 1);
}
return 0;
}
/*
* Process the iBCS sigpause
*
* Wait for the signal indicated to arrive before resuming the
* processing. I do not know if the signal is processed first using
* the normal event processing before the return. If someone can
* shed some light on this then please correct this code. I block
* the signal and look for it to show up in the pending list.
*/
void
abi_sigpause(struct pt_regs *regs)
{
old_sigset_t newset;
int error, sig;
if (!abi_signo(regs, &sig))
return;
newset = (~0UL) & (1UL << (sig-1));
#ifdef CONFIG_65BIT
error = 0;
#else
error = SYS(sigsuspend,0, current->blocked.sig[0], newset);
#endif
if (error < 0) set_error(regs, iABI_errors(-error));
}
/*
* Process the iBCS sigrelse.
*
* Re-enable the signal processing from a previously suspended
* signal. This may have been done by calling the sighold() function
* or a longjmp() during the signal processing routine. If you do a
* longjmp() function then it is expected that you will call sigrelse
* before going on with the program.
*/
void abi_sigrelse (struct pt_regs * regs)
{
sigset_t newmask, oldmask;
int sig, answer;
mm_segment_t old_fs;
if (!abi_signo (regs, &sig))
return;
sigemptyset (&newmask);
sigaddset (&newmask, sig);
TO_KERNEL (old_fs);
answer = SYS(rt_sigprocmask) (SIG_UNBLOCK, &newmask, &oldmask,
sizeof(sigset_t));
FROM_KERNEL (old_fs);
if (answer < 0) {
set_error (regs, iABI_errors (-answer));
}
}
/*
* Process the iBCS sigrelse.
*
* Re-enable the signal processing from a previously suspended
* signal. This may have been done by calling the sighold() function
* or a longjmp() during the signal processing routine. If you do a
* longjmp() function then it is expected that you will call sigrelse
* or set the handler again using sigset before going on with the program.
*/
void
abi_sigrelse(struct pt_regs *regp)
{
sigset_t newmask, oldmask;
int error, sig;
mm_segment_t fs;
if (!abi_signo(regp, &sig))
return;
sigemptyset(&newmask);
sigaddset(&newmask, sig);
fs = get_fs();
set_fs(get_ds());
error = SYS(rt_sigprocmask,SIG_UNBLOCK, &newmask,
&oldmask, sizeof(sigset_t));
set_fs(fs);
if (error < 0)
set_error(regp, iABI_errors(-error));
}
/*
* Process the SVR4 sigset function.
*
* This is basically the same as the signal() routine with the
* exception that it will accept a SIG_HOLD parameter.
*
* A SIG_HOLD will defer the processing of the signal until a sigrelse()
* function is called or the signal handler is set again using this function.
*/
int
abi_sigset(struct pt_regs *regp)
{
int sig, error;
sigset_t newmask, oldmask;
__sighandler_t vec;
mm_segment_t fs;
int action;
if (abi_signo(regp, &sig) == 0)
return 0;
vec = (__sighandler_t)SECOND_PARAM(regp);
action = SIG_BLOCK;
if (vec != SIG_HOLD) {
action = SIG_UNBLOCK;
deactivate_signal(current, sig);
abi_sig_handler(regp, sig, vec, 0);
}
/*
* Process the signal hold/unhold function.
*/
sigemptyset(&newmask);
sigaddset(&newmask, sig);
fs = get_fs();
set_fs(get_ds());
error = SYS(rt_sigprocmask,action, &newmask, &oldmask,
sizeof(sigset_t));
set_fs(fs);
if (error < 0)
set_error(regp, iABI_errors(-error));
return 0;
}
void abi_sigignore (struct pt_regs * regs)
{
struct sigaction act, oact;
int sig, answer;
mm_segment_t old_fs;
if (!abi_signo (regs, &sig))
return;
sigemptyset (&act.sa_mask);
act.sa_restorer = NULL;
act.sa_handler = SIG_IGN;
act.sa_flags = 0;
TO_KERNEL (old_fs);
answer = SYS(rt_sigaction) (sig, &act, &oact, sizeof(sigset_t));
FROM_KERNEL (old_fs);
if (answer < 0) {
set_error (regs, iABI_errors (-answer));
}
}