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Diffstat (limited to 'arch/sparc64/kernel/signal.c')
-rw-r--r--arch/sparc64/kernel/signal.c617
1 files changed, 0 insertions, 617 deletions
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
deleted file mode 100644
index ec82d76dc6f..00000000000
--- a/arch/sparc64/kernel/signal.c
+++ /dev/null
@@ -1,617 +0,0 @@
-/*
- * arch/sparc64/kernel/signal.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright (C) 1995, 2008 David S. Miller (davem@davemloft.net)
- * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
- * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
- * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#ifdef CONFIG_COMPAT
-#include <linux/compat.h> /* for compat_old_sigset_t */
-#endif
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/ptrace.h>
-#include <linux/tracehook.h>
-#include <linux/unistd.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/binfmts.h>
-#include <linux/bitops.h>
-
-#include <asm/uaccess.h>
-#include <asm/ptrace.h>
-#include <asm/pgtable.h>
-#include <asm/fpumacro.h>
-#include <asm/uctx.h>
-#include <asm/siginfo.h>
-#include <asm/visasm.h>
-
-#include "entry.h"
-#include "systbls.h"
-
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
-/* {set, get}context() needed for 64-bit SparcLinux userland. */
-asmlinkage void sparc64_set_context(struct pt_regs *regs)
-{
- struct ucontext __user *ucp = (struct ucontext __user *)
- regs->u_regs[UREG_I0];
- mc_gregset_t __user *grp;
- unsigned long pc, npc, tstate;
- unsigned long fp, i7;
- unsigned char fenab;
- int err;
-
- flush_user_windows();
- if (get_thread_wsaved() ||
- (((unsigned long)ucp) & (sizeof(unsigned long)-1)) ||
- (!__access_ok(ucp, sizeof(*ucp))))
- goto do_sigsegv;
- grp = &ucp->uc_mcontext.mc_gregs;
- err = __get_user(pc, &((*grp)[MC_PC]));
- err |= __get_user(npc, &((*grp)[MC_NPC]));
- if (err || ((pc | npc) & 3))
- goto do_sigsegv;
- if (regs->u_regs[UREG_I1]) {
- sigset_t set;
-
- if (_NSIG_WORDS == 1) {
- if (__get_user(set.sig[0], &ucp->uc_sigmask.sig[0]))
- goto do_sigsegv;
- } else {
- if (__copy_from_user(&set, &ucp->uc_sigmask, sizeof(sigset_t)))
- goto do_sigsegv;
- }
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
- }
- if (test_thread_flag(TIF_32BIT)) {
- pc &= 0xffffffff;
- npc &= 0xffffffff;
- }
- regs->tpc = pc;
- regs->tnpc = npc;
- err |= __get_user(regs->y, &((*grp)[MC_Y]));
- err |= __get_user(tstate, &((*grp)[MC_TSTATE]));
- regs->tstate &= ~(TSTATE_ASI | TSTATE_ICC | TSTATE_XCC);
- regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
- err |= __get_user(regs->u_regs[UREG_G1], (&(*grp)[MC_G1]));
- err |= __get_user(regs->u_regs[UREG_G2], (&(*grp)[MC_G2]));
- err |= __get_user(regs->u_regs[UREG_G3], (&(*grp)[MC_G3]));
- err |= __get_user(regs->u_regs[UREG_G4], (&(*grp)[MC_G4]));
- err |= __get_user(regs->u_regs[UREG_G5], (&(*grp)[MC_G5]));
- err |= __get_user(regs->u_regs[UREG_G6], (&(*grp)[MC_G6]));
-
- /* Skip %g7 as that's the thread register in userspace. */
-
- err |= __get_user(regs->u_regs[UREG_I0], (&(*grp)[MC_O0]));
- err |= __get_user(regs->u_regs[UREG_I1], (&(*grp)[MC_O1]));
- err |= __get_user(regs->u_regs[UREG_I2], (&(*grp)[MC_O2]));
- err |= __get_user(regs->u_regs[UREG_I3], (&(*grp)[MC_O3]));
- err |= __get_user(regs->u_regs[UREG_I4], (&(*grp)[MC_O4]));
- err |= __get_user(regs->u_regs[UREG_I5], (&(*grp)[MC_O5]));
- err |= __get_user(regs->u_regs[UREG_I6], (&(*grp)[MC_O6]));
- err |= __get_user(regs->u_regs[UREG_I7], (&(*grp)[MC_O7]));
-
- err |= __get_user(fp, &(ucp->uc_mcontext.mc_fp));
- err |= __get_user(i7, &(ucp->uc_mcontext.mc_i7));
- err |= __put_user(fp,
- (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[6])));
- err |= __put_user(i7,
- (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[7])));
-
- err |= __get_user(fenab, &(ucp->uc_mcontext.mc_fpregs.mcfpu_enab));
- if (fenab) {
- unsigned long *fpregs = current_thread_info()->fpregs;
- unsigned long fprs;
-
- fprs_write(0);
- err |= __get_user(fprs, &(ucp->uc_mcontext.mc_fpregs.mcfpu_fprs));
- if (fprs & FPRS_DL)
- err |= copy_from_user(fpregs,
- &(ucp->uc_mcontext.mc_fpregs.mcfpu_fregs),
- (sizeof(unsigned int) * 32));
- if (fprs & FPRS_DU)
- err |= copy_from_user(fpregs+16,
- ((unsigned long __user *)&(ucp->uc_mcontext.mc_fpregs.mcfpu_fregs))+16,
- (sizeof(unsigned int) * 32));
- err |= __get_user(current_thread_info()->xfsr[0],
- &(ucp->uc_mcontext.mc_fpregs.mcfpu_fsr));
- err |= __get_user(current_thread_info()->gsr[0],
- &(ucp->uc_mcontext.mc_fpregs.mcfpu_gsr));
- regs->tstate &= ~TSTATE_PEF;
- }
- if (err)
- goto do_sigsegv;
-
- return;
-do_sigsegv:
- force_sig(SIGSEGV, current);
-}
-
-asmlinkage void sparc64_get_context(struct pt_regs *regs)
-{
- struct ucontext __user *ucp = (struct ucontext __user *)
- regs->u_regs[UREG_I0];
- mc_gregset_t __user *grp;
- mcontext_t __user *mcp;
- unsigned long fp, i7;
- unsigned char fenab;
- int err;
-
- synchronize_user_stack();
- if (get_thread_wsaved() || clear_user(ucp, sizeof(*ucp)))
- goto do_sigsegv;
-
-#if 1
- fenab = 0; /* IMO get_context is like any other system call, thus modifies FPU state -jj */
-#else
- fenab = (current_thread_info()->fpsaved[0] & FPRS_FEF);
-#endif
-
- mcp = &ucp->uc_mcontext;
- grp = &mcp->mc_gregs;
-
- /* Skip over the trap instruction, first. */
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc = (regs->tnpc & 0xffffffff);
- regs->tnpc = (regs->tnpc + 4) & 0xffffffff;
- } else {
- regs->tpc = regs->tnpc;
- regs->tnpc += 4;
- }
- err = 0;
- if (_NSIG_WORDS == 1)
- err |= __put_user(current->blocked.sig[0],
- (unsigned long __user *)&ucp->uc_sigmask);
- else
- err |= __copy_to_user(&ucp->uc_sigmask, &current->blocked,
- sizeof(sigset_t));
-
- err |= __put_user(regs->tstate, &((*grp)[MC_TSTATE]));
- err |= __put_user(regs->tpc, &((*grp)[MC_PC]));
- err |= __put_user(regs->tnpc, &((*grp)[MC_NPC]));
- err |= __put_user(regs->y, &((*grp)[MC_Y]));
- err |= __put_user(regs->u_regs[UREG_G1], &((*grp)[MC_G1]));
- err |= __put_user(regs->u_regs[UREG_G2], &((*grp)[MC_G2]));
- err |= __put_user(regs->u_regs[UREG_G3], &((*grp)[MC_G3]));
- err |= __put_user(regs->u_regs[UREG_G4], &((*grp)[MC_G4]));
- err |= __put_user(regs->u_regs[UREG_G5], &((*grp)[MC_G5]));
- err |= __put_user(regs->u_regs[UREG_G6], &((*grp)[MC_G6]));
- err |= __put_user(regs->u_regs[UREG_G7], &((*grp)[MC_G7]));
- err |= __put_user(regs->u_regs[UREG_I0], &((*grp)[MC_O0]));
- err |= __put_user(regs->u_regs[UREG_I1], &((*grp)[MC_O1]));
- err |= __put_user(regs->u_regs[UREG_I2], &((*grp)[MC_O2]));
- err |= __put_user(regs->u_regs[UREG_I3], &((*grp)[MC_O3]));
- err |= __put_user(regs->u_regs[UREG_I4], &((*grp)[MC_O4]));
- err |= __put_user(regs->u_regs[UREG_I5], &((*grp)[MC_O5]));
- err |= __put_user(regs->u_regs[UREG_I6], &((*grp)[MC_O6]));
- err |= __put_user(regs->u_regs[UREG_I7], &((*grp)[MC_O7]));
-
- err |= __get_user(fp,
- (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[6])));
- err |= __get_user(i7,
- (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[7])));
- err |= __put_user(fp, &(mcp->mc_fp));
- err |= __put_user(i7, &(mcp->mc_i7));
-
- err |= __put_user(fenab, &(mcp->mc_fpregs.mcfpu_enab));
- if (fenab) {
- unsigned long *fpregs = current_thread_info()->fpregs;
- unsigned long fprs;
-
- fprs = current_thread_info()->fpsaved[0];
- if (fprs & FPRS_DL)
- err |= copy_to_user(&(mcp->mc_fpregs.mcfpu_fregs), fpregs,
- (sizeof(unsigned int) * 32));
- if (fprs & FPRS_DU)
- err |= copy_to_user(
- ((unsigned long __user *)&(mcp->mc_fpregs.mcfpu_fregs))+16, fpregs+16,
- (sizeof(unsigned int) * 32));
- err |= __put_user(current_thread_info()->xfsr[0], &(mcp->mc_fpregs.mcfpu_fsr));
- err |= __put_user(current_thread_info()->gsr[0], &(mcp->mc_fpregs.mcfpu_gsr));
- err |= __put_user(fprs, &(mcp->mc_fpregs.mcfpu_fprs));
- }
- if (err)
- goto do_sigsegv;
-
- return;
-do_sigsegv:
- force_sig(SIGSEGV, current);
-}
-
-struct rt_signal_frame {
- struct sparc_stackf ss;
- siginfo_t info;
- struct pt_regs regs;
- __siginfo_fpu_t __user *fpu_save;
- stack_t stack;
- sigset_t mask;
- __siginfo_fpu_t fpu_state;
-};
-
-static long _sigpause_common(old_sigset_t set)
-{
- set &= _BLOCKABLE;
- spin_lock_irq(&current->sighand->siglock);
- current->saved_sigmask = current->blocked;
- siginitset(&current->blocked, set);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-
- current->state = TASK_INTERRUPTIBLE;
- schedule();
-
- set_restore_sigmask();
-
- return -ERESTARTNOHAND;
-}
-
-asmlinkage long sys_sigpause(unsigned int set)
-{
- return _sigpause_common(set);
-}
-
-asmlinkage long sys_sigsuspend(old_sigset_t set)
-{
- return _sigpause_common(set);
-}
-
-static inline int
-restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- unsigned long *fpregs = current_thread_info()->fpregs;
- unsigned long fprs;
- int err;
-
- err = __get_user(fprs, &fpu->si_fprs);
- fprs_write(0);
- regs->tstate &= ~TSTATE_PEF;
- if (fprs & FPRS_DL)
- err |= copy_from_user(fpregs, &fpu->si_float_regs[0],
- (sizeof(unsigned int) * 32));
- if (fprs & FPRS_DU)
- err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32],
- (sizeof(unsigned int) * 32));
- err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
- err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
- current_thread_info()->fpsaved[0] |= fprs;
- return err;
-}
-
-void do_rt_sigreturn(struct pt_regs *regs)
-{
- struct rt_signal_frame __user *sf;
- unsigned long tpc, tnpc, tstate;
- __siginfo_fpu_t __user *fpu_save;
- sigset_t set;
- int err;
-
- /* Always make any pending restarted system calls return -EINTR */
- current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
- synchronize_user_stack ();
- sf = (struct rt_signal_frame __user *)
- (regs->u_regs [UREG_FP] + STACK_BIAS);
-
- /* 1. Make sure we are not getting garbage from the user */
- if (((unsigned long) sf) & 3)
- goto segv;
-
- err = get_user(tpc, &sf->regs.tpc);
- err |= __get_user(tnpc, &sf->regs.tnpc);
- if (test_thread_flag(TIF_32BIT)) {
- tpc &= 0xffffffff;
- tnpc &= 0xffffffff;
- }
- err |= ((tpc | tnpc) & 3);
-
- /* 2. Restore the state */
- err |= __get_user(regs->y, &sf->regs.y);
- err |= __get_user(tstate, &sf->regs.tstate);
- err |= copy_from_user(regs->u_regs, sf->regs.u_regs, sizeof(regs->u_regs));
-
- /* User can only change condition codes and %asi in %tstate. */
- regs->tstate &= ~(TSTATE_ASI | TSTATE_ICC | TSTATE_XCC);
- regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
-
- err |= __get_user(fpu_save, &sf->fpu_save);
- if (fpu_save)
- err |= restore_fpu_state(regs, &sf->fpu_state);
-
- err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
- err |= do_sigaltstack(&sf->stack, NULL, (unsigned long)sf);
-
- if (err)
- goto segv;
-
- regs->tpc = tpc;
- regs->tnpc = tnpc;
-
- /* Prevent syscall restart. */
- pt_regs_clear_syscall(regs);
-
- sigdelsetmask(&set, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = set;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
- return;
-segv:
- force_sig(SIGSEGV, current);
-}
-
-/* Checks if the fp is valid */
-static int invalid_frame_pointer(void __user *fp, int fplen)
-{
- if (((unsigned long) fp) & 7)
- return 1;
- return 0;
-}
-
-static inline int
-save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- unsigned long *fpregs = current_thread_info()->fpregs;
- unsigned long fprs;
- int err = 0;
-
- fprs = current_thread_info()->fpsaved[0];
- if (fprs & FPRS_DL)
- err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
- (sizeof(unsigned int) * 32));
- if (fprs & FPRS_DU)
- err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
- (sizeof(unsigned int) * 32));
- err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
- err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
- err |= __put_user(fprs, &fpu->si_fprs);
-
- return err;
-}
-
-static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, unsigned long framesize)
-{
- unsigned long sp = regs->u_regs[UREG_FP] + STACK_BIAS;
-
- /*
- * If we are on the alternate signal stack and would overflow it, don't.
- * Return an always-bogus address instead so we will die with SIGSEGV.
- */
- if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize)))
- return (void __user *) -1L;
-
- /* This is the X/Open sanctioned signal stack switching. */
- if (ka->sa.sa_flags & SA_ONSTACK) {
- if (sas_ss_flags(sp) == 0)
- sp = current->sas_ss_sp + current->sas_ss_size;
- }
-
- /* Always align the stack frame. This handles two cases. First,
- * sigaltstack need not be mindful of platform specific stack
- * alignment. Second, if we took this signal because the stack
- * is not aligned properly, we'd like to take the signal cleanly
- * and report that.
- */
- sp &= ~7UL;
-
- return (void __user *)(sp - framesize);
-}
-
-static inline void
-setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
- int signo, sigset_t *oldset, siginfo_t *info)
-{
- struct rt_signal_frame __user *sf;
- int sigframe_size, err;
-
- /* 1. Make sure everything is clean */
- synchronize_user_stack();
- save_and_clear_fpu();
-
- sigframe_size = sizeof(struct rt_signal_frame);
- if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
- sigframe_size -= sizeof(__siginfo_fpu_t);
-
- sf = (struct rt_signal_frame __user *)
- get_sigframe(ka, regs, sigframe_size);
-
- if (invalid_frame_pointer (sf, sigframe_size))
- goto sigill;
-
- if (get_thread_wsaved() != 0)
- goto sigill;
-
- /* 2. Save the current process state */
- err = copy_to_user(&sf->regs, regs, sizeof (*regs));
-
- if (current_thread_info()->fpsaved[0] & FPRS_FEF) {
- err |= save_fpu_state(regs, &sf->fpu_state);
- err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
- } else {
- err |= __put_user(0, &sf->fpu_save);
- }
-
- /* Setup sigaltstack */
- err |= __put_user(current->sas_ss_sp, &sf->stack.ss_sp);
- err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &sf->stack.ss_flags);
- err |= __put_user(current->sas_ss_size, &sf->stack.ss_size);
-
- err |= copy_to_user(&sf->mask, oldset, sizeof(sigset_t));
-
- err |= copy_in_user((u64 __user *)sf,
- (u64 __user *)(regs->u_regs[UREG_FP]+STACK_BIAS),
- sizeof(struct reg_window));
-
- if (info)
- err |= copy_siginfo_to_user(&sf->info, info);
- else {
- err |= __put_user(signo, &sf->info.si_signo);
- err |= __put_user(SI_NOINFO, &sf->info.si_code);
- }
- if (err)
- goto sigsegv;
-
- /* 3. signal handler back-trampoline and parameters */
- regs->u_regs[UREG_FP] = ((unsigned long) sf) - STACK_BIAS;
- regs->u_regs[UREG_I0] = signo;
- regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
-
- /* The sigcontext is passed in this way because of how it
- * is defined in GLIBC's /usr/include/bits/sigcontext.h
- * for sparc64. It includes the 128 bytes of siginfo_t.
- */
- regs->u_regs[UREG_I2] = (unsigned long) &sf->info;
-
- /* 5. signal handler */
- regs->tpc = (unsigned long) ka->sa.sa_handler;
- regs->tnpc = (regs->tpc + 4);
- if (test_thread_flag(TIF_32BIT)) {
- regs->tpc &= 0xffffffff;
- regs->tnpc &= 0xffffffff;
- }
- /* 4. return to kernel instructions */
- regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
- return;
-
-sigill:
- do_exit(SIGILL);
-sigsegv:
- force_sigsegv(signo, current);
-}
-
-static inline void handle_signal(unsigned long signr, struct k_sigaction *ka,
- siginfo_t *info,
- sigset_t *oldset, struct pt_regs *regs)
-{
- setup_rt_frame(ka, regs, signr, oldset,
- (ka->sa.sa_flags & SA_SIGINFO) ? info : NULL);
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
- if (!(ka->sa.sa_flags & SA_NOMASK))
- sigaddset(&current->blocked,signr);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-}
-
-static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
- struct sigaction *sa)
-{
- switch (regs->u_regs[UREG_I0]) {
- case ERESTART_RESTARTBLOCK:
- case ERESTARTNOHAND:
- no_system_call_restart:
- regs->u_regs[UREG_I0] = EINTR;
- regs->tstate |= (TSTATE_ICARRY|TSTATE_XCARRY);
- break;
- case ERESTARTSYS:
- if (!(sa->sa_flags & SA_RESTART))
- goto no_system_call_restart;
- /* fallthrough */
- case ERESTARTNOINTR:
- regs->u_regs[UREG_I0] = orig_i0;
- regs->tpc -= 4;
- regs->tnpc -= 4;
- }
-}
-
-/* Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- */
-static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
-{
- struct k_sigaction ka;
- int restart_syscall;
- sigset_t *oldset;
- siginfo_t info;
- int signr;
-
- if (pt_regs_is_syscall(regs) &&
- (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY))) {
- restart_syscall = 1;
- } else
- restart_syscall = 0;
-
- if (current_thread_info()->status & TS_RESTORE_SIGMASK)
- oldset = &current->saved_sigmask;
- else
- oldset = &current->blocked;
-
-#ifdef CONFIG_COMPAT
- if (test_thread_flag(TIF_32BIT)) {
- extern void do_signal32(sigset_t *, struct pt_regs *,
- int restart_syscall,
- unsigned long orig_i0);
- do_signal32(oldset, regs, restart_syscall, orig_i0);
- return;
- }
-#endif
-
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-
- /* If the debugger messes with the program counter, it clears
- * the software "in syscall" bit, directing us to not perform
- * a syscall restart.
- */
- if (restart_syscall && !pt_regs_is_syscall(regs))
- restart_syscall = 0;
-
- if (signr > 0) {
- if (restart_syscall)
- syscall_restart(orig_i0, regs, &ka.sa);
- handle_signal(signr, &ka, &info, oldset, regs);
-
- /* A signal was successfully delivered; the saved
- * sigmask will have been stored in the signal frame,
- * and will be restored by sigreturn, so we can simply
- * clear the TS_RESTORE_SIGMASK flag.
- */
- current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
-
- tracehook_signal_handler(signr, &info, &ka, regs, 0);
- return;
- }
- if (restart_syscall &&
- (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
- regs->u_regs[UREG_I0] == ERESTARTSYS ||
- regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
- /* replay the system call when we are done */
- regs->u_regs[UREG_I0] = orig_i0;
- regs->tpc -= 4;
- regs->tnpc -= 4;
- }
- if (restart_syscall &&
- regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
- regs->u_regs[UREG_G1] = __NR_restart_syscall;
- regs->tpc -= 4;
- regs->tnpc -= 4;
- }
-
- /* If there's no signal to deliver, we just put the saved sigmask
- * back
- */
- if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
- current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
- sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
- }
-}
-
-void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long thread_info_flags)
-{
- if (thread_info_flags & _TIF_SIGPENDING)
- do_signal(regs, orig_i0);
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
- tracehook_notify_resume(regs);
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-16 01:16:08 +0000