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Diffstat (limited to 'arch/alpha/kernel/signal.c')
-rw-r--r--arch/alpha/kernel/signal.c68
1 files changed, 30 insertions, 38 deletions
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index 8129dd92cadc..e62d1d461b1f 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/arch/alpha/kernel/signal.c
*
@@ -21,7 +22,7 @@
#include <linux/binfmts.h>
#include <linux/bitops.h>
#include <linux/syscalls.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
#include <linux/uaccess.h>
#include <asm/sigcontext.h>
@@ -64,7 +65,7 @@ SYSCALL_DEFINE3(osf_sigaction, int, sig,
if (act) {
old_sigset_t mask;
- if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+ if (!access_ok(act, sizeof(*act)) ||
__get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
__get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
__get_user(mask, &act->sa_mask))
@@ -76,7 +77,7 @@ SYSCALL_DEFINE3(osf_sigaction, int, sig,
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ if (!access_ok(oact, sizeof(*oact)) ||
__put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
__put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
@@ -149,9 +150,10 @@ restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs)
{
unsigned long usp;
struct switch_stack *sw = (struct switch_stack *)regs - 1;
- long i, err = __get_user(regs->pc, &sc->sc_pc);
+ long err = __get_user(regs->pc, &sc->sc_pc);
current->restart_block.fn = do_no_restart_syscall;
+ current_thread_info()->status |= TS_SAVED_FP | TS_RESTORE_FP;
sw->r26 = (unsigned long) ret_from_sys_call;
@@ -188,9 +190,9 @@ restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs)
err |= __get_user(usp, sc->sc_regs+30);
wrusp(usp);
- for (i = 0; i < 31; i++)
- err |= __get_user(sw->fp[i], sc->sc_fpregs+i);
- err |= __get_user(sw->fp[31], &sc->sc_fpcr);
+ err |= __copy_from_user(current_thread_info()->fp,
+ sc->sc_fpregs, 31 * 8);
+ err |= __get_user(current_thread_info()->fp[31], &sc->sc_fpcr);
return err;
}
@@ -206,7 +208,7 @@ do_sigreturn(struct sigcontext __user *sc)
sigset_t set;
/* Verify that it's a good sigcontext before using it */
- if (!access_ok(VERIFY_READ, sc, sizeof(*sc)))
+ if (!access_ok(sc, sizeof(*sc)))
goto give_sigsegv;
if (__get_user(set.sig[0], &sc->sc_mask))
goto give_sigsegv;
@@ -218,19 +220,13 @@ do_sigreturn(struct sigcontext __user *sc)
/* Send SIGTRAP if we're single-stepping: */
if (ptrace_cancel_bpt (current)) {
- siginfo_t info;
-
- info.si_signo = SIGTRAP;
- info.si_errno = 0;
- info.si_code = TRAP_BRKPT;
- info.si_addr = (void __user *) regs->pc;
- info.si_trapno = 0;
- send_sig_info(SIGTRAP, &info, current);
+ send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *) regs->pc,
+ current);
}
return;
give_sigsegv:
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
}
asmlinkage void
@@ -240,7 +236,7 @@ do_rt_sigreturn(struct rt_sigframe __user *frame)
sigset_t set;
/* Verify that it's a good ucontext_t before using it */
- if (!access_ok(VERIFY_READ, &frame->uc, sizeof(frame->uc)))
+ if (!access_ok(&frame->uc, sizeof(frame->uc)))
goto give_sigsegv;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto give_sigsegv;
@@ -252,19 +248,13 @@ do_rt_sigreturn(struct rt_sigframe __user *frame)
/* Send SIGTRAP if we're single-stepping: */
if (ptrace_cancel_bpt (current)) {
- siginfo_t info;
-
- info.si_signo = SIGTRAP;
- info.si_errno = 0;
- info.si_code = TRAP_BRKPT;
- info.si_addr = (void __user *) regs->pc;
- info.si_trapno = 0;
- send_sig_info(SIGTRAP, &info, current);
+ send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *) regs->pc,
+ current);
}
return;
give_sigsegv:
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
}
@@ -283,7 +273,7 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
unsigned long mask, unsigned long sp)
{
struct switch_stack *sw = (struct switch_stack *)regs - 1;
- long i, err = 0;
+ long err = 0;
err |= __put_user(on_sig_stack((unsigned long)sc), &sc->sc_onstack);
err |= __put_user(mask, &sc->sc_mask);
@@ -323,10 +313,10 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
err |= __put_user(sp, sc->sc_regs+30);
err |= __put_user(0, sc->sc_regs+31);
- for (i = 0; i < 31; i++)
- err |= __put_user(sw->fp[i], sc->sc_fpregs+i);
+ err |= __copy_to_user(sc->sc_fpregs,
+ current_thread_info()->fp, 31 * 8);
err |= __put_user(0, sc->sc_fpregs+31);
- err |= __put_user(sw->fp[31], &sc->sc_fpcr);
+ err |= __put_user(current_thread_info()->fp[31], &sc->sc_fpcr);
err |= __put_user(regs->trap_a0, &sc->sc_traparg_a0);
err |= __put_user(regs->trap_a1, &sc->sc_traparg_a1);
@@ -343,7 +333,7 @@ setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
oldsp = rdusp();
frame = get_sigframe(ksig, oldsp, sizeof(*frame));
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= setup_sigcontext(&frame->sc, regs, set->sig[0], oldsp);
@@ -388,7 +378,7 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
oldsp = rdusp();
frame = get_sigframe(ksig, oldsp, sizeof(*frame));
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ if (!access_ok(frame, sizeof(*frame)))
return -EFAULT;
err |= copy_siginfo_to_user(&frame->info, &ksig->info);
@@ -464,7 +454,7 @@ syscall_restart(unsigned long r0, unsigned long r19,
regs->r0 = EINTR;
break;
}
- /* fallthrough */
+ fallthrough;
case ERESTARTNOINTR:
regs->r0 = r0; /* reset v0 and a3 and replay syscall */
regs->r19 = r19;
@@ -538,15 +528,17 @@ do_work_pending(struct pt_regs *regs, unsigned long thread_flags,
schedule();
} else {
local_irq_enable();
- if (thread_flags & _TIF_SIGPENDING) {
+ if (thread_flags & (_TIF_SIGPENDING|_TIF_NOTIFY_SIGNAL)) {
+ preempt_disable();
+ save_fpu();
+ preempt_enable();
do_signal(regs, r0, r19);
r0 = 0;
} else {
- clear_thread_flag(TIF_NOTIFY_RESUME);
- tracehook_notify_resume(regs);
+ resume_user_mode_work(regs);
}
}
local_irq_disable();
- thread_flags = current_thread_info()->flags;
+ thread_flags = read_thread_flags();
} while (thread_flags & _TIF_WORK_MASK);
}
generated by cgit (git 2.34.1) at 2025-12-25 06:46:30 +0000