[MIPS] IRIX: Crapectopy.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -17,6 +17,7 @@
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#include <asm/ptrace.h>
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#include <asm/uaccess.h>
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#include <asm/unistd.h>
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#undef DEBUG_SIG
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@ -172,11 +173,12 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
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return ret;
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}
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asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs)
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void do_irix_signal(struct pt_regs *regs)
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{
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struct k_sigaction ka;
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siginfo_t info;
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int signr;
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sigset_t *oldset;
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/*
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* We want the common case to go fast, which is why we may in certain
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@ -184,14 +186,27 @@ asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs)
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* if so.
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*/
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if (!user_mode(regs))
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return 1;
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return;
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if (!oldset)
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if (test_thread_flag(TIF_RESTORE_SIGMASK))
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oldset = ¤t->saved_sigmask;
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else
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oldset = ¤t->blocked;
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signr = get_signal_to_deliver(&info, &ka, regs, NULL);
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if (signr > 0)
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return handle_signal(signr, &info, &ka, oldset, regs);
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if (signr > 0) {
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/* Whee! Actually deliver the signal. */
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if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
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/* a signal was successfully delivered; the saved
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* sigmask will have been stored in the signal frame,
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* and will be restored by sigreturn, so we can simply
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* clear the TIF_RESTORE_SIGMASK flag */
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if (test_thread_flag(TIF_RESTORE_SIGMASK))
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clear_thread_flag(TIF_RESTORE_SIGMASK);
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}
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return;
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}
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/*
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* Who's code doesn't conform to the restartable syscall convention
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@ -204,8 +219,21 @@ asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs)
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regs->regs[2] == ERESTARTNOINTR) {
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regs->cp0_epc -= 8;
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}
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if (regs->regs[2] == ERESTART_RESTARTBLOCK) {
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regs->regs[2] = __NR_restart_syscall;
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regs->regs[7] = regs->regs[26];
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regs->cp0_epc -= 4;
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}
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}
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/*
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* If there's no signal to deliver, we just put the saved sigmask
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* back
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*/
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if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
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clear_thread_flag(TIF_RESTORE_SIGMASK);
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sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL);
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}
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return 0;
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}
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asmlinkage void
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@ -409,7 +437,7 @@ asmlinkage int irix_sigprocmask(int how, irix_sigset_t __user *new,
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asmlinkage int irix_sigsuspend(struct pt_regs *regs)
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{
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sigset_t saveset, newset;
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sigset_t newset;
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sigset_t __user *uset;
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uset = (sigset_t __user *) regs->regs[4];
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@ -418,18 +446,15 @@ asmlinkage int irix_sigsuspend(struct pt_regs *regs)
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sigdelsetmask(&newset, ~_BLOCKABLE);
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spin_lock_irq(¤t->sighand->siglock);
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saveset = current->blocked;
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current->saved_sigmask = current->blocked;
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current->blocked = newset;
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recalc_sigpending();
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spin_unlock_irq(¤t->sighand->siglock);
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regs->regs[2] = -EINTR;
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while (1) {
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current->state = TASK_INTERRUPTIBLE;
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schedule();
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if (do_irix_signal(&saveset, regs))
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return -EINTR;
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}
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current->state = TASK_INTERRUPTIBLE;
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schedule();
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set_thread_flag(TIF_RESTORE_SIGMASK);
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return -ERESTARTNOHAND;
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}
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/* hate hate hate... */
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