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Diffstat (limited to 'arch/sh/kernel/signal_64.c')
-rw-r--r--arch/sh/kernel/signal_64.c61
1 files changed, 26 insertions, 35 deletions
diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c
index 0663a0ee6021..5a9f1f10ebf4 100644
--- a/arch/sh/kernel/signal_64.c
+++ b/arch/sh/kernel/signal_64.c
@@ -101,7 +101,7 @@ static int do_signal(struct pt_regs *regs, sigset_t *oldset)
if (try_to_freeze())
goto no_signal;
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else if (!oldset)
oldset = &current->blocked;
@@ -115,12 +115,12 @@ static int do_signal(struct pt_regs *regs, sigset_t *oldset)
/*
* If a signal was successfully delivered, the
* saved sigmask is in its frame, and we can
- * clear the TIF_RESTORE_SIGMASK flag.
+ * clear the TS_RESTORE_SIGMASK flag.
*/
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- clear_thread_flag(TIF_RESTORE_SIGMASK);
+ current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
- tracehook_signal_handler(signr, &info, &ka, regs, 0);
+ tracehook_signal_handler(signr, &info, &ka, regs,
+ test_thread_flag(TIF_SINGLESTEP));
return 1;
}
}
@@ -146,8 +146,8 @@ no_signal:
}
/* No signal to deliver -- put the saved sigmask back */
- if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
- clear_thread_flag(TIF_RESTORE_SIGMASK);
+ if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
+ current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
}
@@ -176,6 +176,7 @@ sys_sigsuspend(old_sigset_t mask,
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
+ set_restore_sigmask();
regs->pc += 4; /* because sys_sigreturn decrements the pc */
if (do_signal(regs, &saveset)) {
/* pc now points at signal handler. Need to decrement
@@ -296,7 +297,7 @@ restore_sigcontext_fpu(struct pt_regs *regs, struct sigcontext __user *sc)
regs->sr |= SR_FD;
}
- err |= __copy_from_user(&current->thread.fpu.hard, &sc->sc_fpregs[0],
+ err |= __copy_from_user(&current->thread.xstate->hardfpu, &sc->sc_fpregs[0],
(sizeof(long long) * 32) + (sizeof(int) * 1));
return err;
@@ -315,13 +316,13 @@ setup_sigcontext_fpu(struct pt_regs *regs, struct sigcontext __user *sc)
if (current == last_task_used_math) {
enable_fpu();
- save_fpu(current, regs);
+ save_fpu(current);
disable_fpu();
last_task_used_math = NULL;
regs->sr |= SR_FD;
}
- err |= __copy_to_user(&sc->sc_fpregs[0], &current->thread.fpu.hard,
+ err |= __copy_to_user(&sc->sc_fpregs[0], &current->thread.xstate->hardfpu,
(sizeof(long long) * 32) + (sizeof(int) * 1));
clear_used_math();
@@ -561,13 +562,11 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
- DEREF_REG_PR = (unsigned long) ka->sa.sa_restorer | 0x1;
-
/*
* On SH5 all edited pointers are subject to NEFF
*/
- DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ?
- (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
+ DEREF_REG_PR = neff_sign_extend((unsigned long)
+ ka->sa.sa_restorer | 0x1);
} else {
/*
* Different approach on SH5.
@@ -580,9 +579,8 @@ static int setup_frame(int sig, struct k_sigaction *ka,
* . being code, linker turns ShMedia bit on, always
* dereference index -1.
*/
- DEREF_REG_PR = (unsigned long) frame->retcode | 0x01;
- DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ?
- (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
+ DEREF_REG_PR = neff_sign_extend((unsigned long)
+ frame->retcode | 0x01);
if (__copy_to_user(frame->retcode,
(void *)((unsigned long)sa_default_restorer & (~1)), 16) != 0)
@@ -596,9 +594,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
* Set up registers for signal handler.
* All edited pointers are subject to NEFF.
*/
- regs->regs[REG_SP] = (unsigned long) frame;
- regs->regs[REG_SP] = (regs->regs[REG_SP] & NEFF_SIGN) ?
- (regs->regs[REG_SP] | NEFF_MASK) : regs->regs[REG_SP];
+ regs->regs[REG_SP] = neff_sign_extend((unsigned long)frame);
regs->regs[REG_ARG1] = signal; /* Arg for signal handler */
/* FIXME:
@@ -613,8 +609,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->sc;
regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->sc;
- regs->pc = (unsigned long) ka->sa.sa_handler;
- regs->pc = (regs->pc & NEFF_SIGN) ? (regs->pc | NEFF_MASK) : regs->pc;
+ regs->pc = neff_sign_extend((unsigned long)ka->sa.sa_handler);
set_fs(USER_DS);
@@ -676,13 +671,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
- DEREF_REG_PR = (unsigned long) ka->sa.sa_restorer | 0x1;
-
/*
* On SH5 all edited pointers are subject to NEFF
*/
- DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ?
- (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
+ DEREF_REG_PR = neff_sign_extend((unsigned long)
+ ka->sa.sa_restorer | 0x1);
} else {
/*
* Different approach on SH5.
@@ -695,15 +688,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
* . being code, linker turns ShMedia bit on, always
* dereference index -1.
*/
-
- DEREF_REG_PR = (unsigned long) frame->retcode | 0x01;
- DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ?
- (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
+ DEREF_REG_PR = neff_sign_extend((unsigned long)
+ frame->retcode | 0x01);
if (__copy_to_user(frame->retcode,
(void *)((unsigned long)sa_default_rt_restorer & (~1)), 16) != 0)
goto give_sigsegv;
+ /* Cohere the trampoline with the I-cache. */
flush_icache_range(DEREF_REG_PR-1, DEREF_REG_PR-1+15);
}
@@ -711,14 +703,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
* Set up registers for signal handler.
* All edited pointers are subject to NEFF.
*/
- regs->regs[REG_SP] = (unsigned long) frame;
- regs->regs[REG_SP] = (regs->regs[REG_SP] & NEFF_SIGN) ?
- (regs->regs[REG_SP] | NEFF_MASK) : regs->regs[REG_SP];
+ regs->regs[REG_SP] = neff_sign_extend((unsigned long)frame);
regs->regs[REG_ARG1] = signal; /* Arg for signal handler */
regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->info;
regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->uc.uc_mcontext;
- regs->pc = (unsigned long) ka->sa.sa_handler;
- regs->pc = (regs->pc & NEFF_SIGN) ? (regs->pc | NEFF_MASK) : regs->pc;
+ regs->pc = neff_sign_extend((unsigned long)ka->sa.sa_handler);
set_fs(USER_DS);
@@ -772,5 +761,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned long thread_info
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
+ if (current->replacement_session_keyring)
+ key_replace_session_keyring();
}
}
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