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Diffstat (limited to 'arch/sh/kernel/signal_64.c')
-rw-r--r--arch/sh/kernel/signal_64.c82
1 files changed, 32 insertions, 50 deletions
diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c
index 23d4c71c91af..897abe7b871e 100644
--- a/arch/sh/kernel/signal_64.c
+++ b/arch/sh/kernel/signal_64.c
@@ -41,8 +41,7 @@
#define DEBUG_SIG 0
static void
-handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
- struct pt_regs * regs);
+handle_signal(struct ksignal *ksig, struct pt_regs *regs);
static inline void
handle_syscall_restart(struct pt_regs *regs, struct sigaction *sa)
@@ -82,9 +81,7 @@ handle_syscall_restart(struct pt_regs *regs, struct sigaction *sa)
*/
static void do_signal(struct pt_regs *regs)
{
- siginfo_t info;
- int signr;
- struct k_sigaction ka;
+ struct ksignal ksig;
/*
* We want the common case to go fast, which
@@ -95,12 +92,11 @@ static void do_signal(struct pt_regs *regs)
if (!user_mode(regs))
return;
- signr = get_signal_to_deliver(&info, &ka, regs, 0);
- if (signr > 0) {
- handle_syscall_restart(regs, &ka.sa);
+ if (get_signal(&ksig)) {
+ handle_syscall_restart(regs, &ksig.ka.sa);
/* Whee! Actually deliver the signal. */
- handle_signal(signr, &info, &ka, regs);
+ handle_signal(&ksig, regs);
return;
}
@@ -378,17 +374,16 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size)
void sa_default_restorer(void); /* See comments below */
void sa_default_rt_restorer(void); /* See comments below */
-static int setup_frame(int sig, struct k_sigaction *ka,
- sigset_t *set, struct pt_regs *regs)
+static int setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
{
struct sigframe __user *frame;
- int err = 0;
+ int err = 0, sig = ksig->sig;
int signal;
- frame = get_sigframe(ka, regs->regs[REG_SP], sizeof(*frame));
+ frame = get_sigframe(&ksig->ka, regs->regs[REG_SP], sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
signal = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
@@ -400,7 +395,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* Give up earlier as i386, in case */
if (err)
- goto give_sigsegv;
+ return -EFAULT;
if (_NSIG_WORDS > 1) {
err |= __copy_to_user(frame->extramask, &set->sig[1],
@@ -408,16 +403,16 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* Give up earlier as i386, in case */
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
- if (ka->sa.sa_flags & SA_RESTORER) {
+ if (ksig->ka.sa.sa_flags & SA_RESTORER) {
/*
* On SH5 all edited pointers are subject to NEFF
*/
DEREF_REG_PR = neff_sign_extend((unsigned long)
- ka->sa.sa_restorer | 0x1);
+ ksig->ka->sa.sa_restorer | 0x1);
} else {
/*
* Different approach on SH5.
@@ -435,7 +430,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
if (__copy_to_user(frame->retcode,
(void *)((unsigned long)sa_default_restorer & (~1)), 16) != 0)
- goto give_sigsegv;
+ return -EFAULT;
/* Cohere the trampoline with the I-cache. */
flush_cache_sigtramp(DEREF_REG_PR-1);
@@ -460,7 +455,7 @@ 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 = neff_sign_extend((unsigned long)ka->sa.sa_handler);
+ regs->pc = neff_sign_extend((unsigned long)ksig->ka.sa.sa_handler);
set_fs(USER_DS);
@@ -471,23 +466,19 @@ static int setup_frame(int sig, struct k_sigaction *ka,
DEREF_REG_PR >> 32, DEREF_REG_PR & 0xffffffff);
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
-static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs *regs)
+static int setup_rt_frame(struct ksignal *kig, sigset_t *set,
+ struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
- int err = 0;
+ int err = 0, sig = ksig->sig;
int signal;
- frame = get_sigframe(ka, regs->regs[REG_SP], sizeof(*frame));
+ frame = get_sigframe(&ksig->ka, regs->regs[REG_SP], sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
signal = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
@@ -497,11 +488,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(&frame->info, &frame->pinfo);
err |= __put_user(&frame->uc, &frame->puc);
- err |= copy_siginfo_to_user(&frame->info, info);
+ err |= copy_siginfo_to_user(&frame->info, &ksig->info);
/* Give up earlier as i386, in case */
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
@@ -513,16 +504,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
/* Give up earlier as i386, in case */
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
- if (ka->sa.sa_flags & SA_RESTORER) {
+ if (ksig->ka.sa.sa_flags & SA_RESTORER) {
/*
* On SH5 all edited pointers are subject to NEFF
*/
DEREF_REG_PR = neff_sign_extend((unsigned long)
- ka->sa.sa_restorer | 0x1);
+ ksig->ka.sa.sa_restorer | 0x1);
} else {
/*
* Different approach on SH5.
@@ -540,7 +531,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
if (__copy_to_user(frame->retcode,
(void *)((unsigned long)sa_default_rt_restorer & (~1)), 16) != 0)
- goto give_sigsegv;
+ return -EFAULT;
/* Cohere the trampoline with the I-cache. */
flush_icache_range(DEREF_REG_PR-1, DEREF_REG_PR-1+15);
@@ -554,7 +545,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
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 = neff_sign_extend((unsigned long)ka->sa.sa_handler);
+ regs->pc = neff_sign_extend((unsigned long)ksig->ka.sa.sa_handler);
set_fs(USER_DS);
@@ -564,33 +555,24 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
DEREF_REG_PR >> 32, DEREF_REG_PR & 0xffffffff);
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
/*
* OK, we're invoking a handler
*/
static void
-handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
- struct pt_regs * regs)
+handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Set up the stack frame */
- if (ka->sa.sa_flags & SA_SIGINFO)
- ret = setup_rt_frame(sig, ka, info, oldset, regs);
+ if (ksig->ka.sa.sa_flags & SA_SIGINFO)
+ ret = setup_rt_frame(ksig, oldset, regs);
else
- ret = setup_frame(sig, ka, oldset, regs);
-
- if (ret)
- return;
+ ret = setup_frame(ksig, oldset, regs);
- signal_delivered(sig, info, ka, regs,
- test_thread_flag(TIF_SINGLESTEP));
+ signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
}
asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 15:49:33 +0000