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Message-Id: <1381231942-4145-3-git-send-email-richard@nod.at>
Date: Tue, 8 Oct 2013 13:32:21 +0200
From: Richard Weinberger <richard@....at>
To: linux-kernel@...r.kernel.org
Cc: linux-arch@...r.kernel.org, viro@...iv.linux.org.uk,
vgupta@...opsys.com, catalin.marinas@....com, will.deacon@....com,
hskinnemoen@...il.com, egtvedt@...fundet.no, vapier@...too.org,
msalter@...hat.com, a-jacquiot@...com, starvik@...s.com,
jesper.nilsson@...s.com, dhowells@...hat.com, rkuo@...eaurora.org,
tony.luck@...el.com, fenghua.yu@...el.com, takata@...ux-m32r.org,
geert@...ux-m68k.org, james.hogan@...tec.com, monstr@...str.eu,
yasutake.koichi@...panasonic.com, ralf@...ux-mips.org,
jonas@...thpole.se, jejb@...isc-linux.org, deller@....de,
benh@...nel.crashing.org, paulus@...ba.org, schwidefsky@...ibm.com,
heiko.carstens@...ibm.com, liqin.linux@...il.com,
lennox.wu@...il.com, lethal@...ux-sh.org, cmetcalf@...era.com,
gxt@...c.pku.edu.cn, linux-xtensa@...ux-xtensa.org,
akpm@...ux-foundation.org, oleg@...hat.com, tj@...nel.org,
Richard Weinberger <richard@....at>
Subject: [PATCH 08/29] h8300: Use get_signal() signal_setup_done()
Use the more generic functions get_signal() signal_setup_done()
for signal delivery.
Signed-off-by: Richard Weinberger <richard@....at>
---
arch/h8300/kernel/signal.c | 81 +++++++++++++++++++---------------------------
1 file changed, 34 insertions(+), 47 deletions(-)
diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c
index a65ff3b..f321b50 100644
--- a/arch/h8300/kernel/signal.c
+++ b/arch/h8300/kernel/signal.c
@@ -206,18 +206,18 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
return (void *)((usp - frame_size) & -8UL);
}
-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 *frame;
- int err = 0;
+ int err = 0, sig = ksig->sig;
int usig;
unsigned char *ret;
- frame = get_sigframe(ka, regs, sizeof(*frame));
+ frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
usig = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
@@ -227,22 +227,22 @@ static int setup_frame (int sig, struct k_sigaction *ka,
err |= __put_user(usig, &frame->sig);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
if (_NSIG_WORDS > 1) {
err |= copy_to_user(frame->extramask, &set->sig[1],
sizeof(frame->extramask));
if (err)
- goto give_sigsegv;
+ return -EFAULT;
}
ret = frame->retcode;
- if (ka->sa.sa_flags & SA_RESTORER)
- ret = (unsigned char *)(ka->sa.sa_restorer);
+ if (ksig->ka.sa.sa_flags & SA_RESTORER)
+ ret = (unsigned char *)(ksig->ka.sa.sa_restorer);
else {
/* sub.l er0,er0; mov.b #__NR_sigreturn,r0l; trapa #0 */
err |= __put_user(0x1a80f800 + (__NR_sigreturn & 0xff),
@@ -254,11 +254,11 @@ static int setup_frame (int sig, struct k_sigaction *ka,
err |= __put_user(ret, &frame->pretcode);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
wrusp ((unsigned long) frame);
- regs->pc = (unsigned long) ka->sa.sa_handler;
+ regs->pc = (unsigned long) ksig->ka.sa.sa_handler;
regs->er0 = (current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
&& sig < 32
@@ -268,24 +268,20 @@ static int setup_frame (int sig, struct k_sigaction *ka,
regs->er5 = current->mm->start_data; /* GOT base */
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 *ksig, sigset_t *set,
+ struct pt_regs *regs)
{
struct rt_sigframe *frame;
- int err = 0;
+ int err = 0, sig = ksig->sig;
int usig;
unsigned char *ret;
- frame = get_sigframe(ka, regs, sizeof(*frame));
+ frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
usig = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
@@ -295,13 +291,13 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(usig, &frame->sig);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
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);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
@@ -310,12 +306,12 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up to return from userspace. */
ret = frame->retcode;
- if (ka->sa.sa_flags & SA_RESTORER)
- ret = (unsigned char *)(ka->sa.sa_restorer);
+ if (ksig->ka.sa.sa_flags & SA_RESTORER)
+ ret = (unsigned char *)(ksig->ka.sa.sa_restorer);
else {
/* sub.l er0,er0; mov.b #__NR_sigreturn,r0l; trapa #0 */
err |= __put_user(0x1a80f800 + (__NR_sigreturn & 0xff),
@@ -325,11 +321,11 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(ret, &frame->pretcode);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
wrusp ((unsigned long) frame);
- regs->pc = (unsigned long) ka->sa.sa_handler;
+ regs->pc = (unsigned long) ksig->ka.sa.sa_handler;
regs->er0 = (current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
&& sig < 32
@@ -340,18 +336,13 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
regs->er5 = current->mm->start_data; /* GOT base */
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;
@@ -364,7 +355,7 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
break;
case -ERESTARTSYS:
- if (!(ka->sa.sa_flags & SA_RESTART)) {
+ if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
regs->er0 = -EINTR;
break;
}
@@ -376,13 +367,12 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
}
/* 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);
+ ret = setup_frame(ksig, oldset, regs);
- if (!ret)
- signal_delivered(sig, info, ka, regs, 0);
+ signal_setup_done(ret, ksig, 0);
}
/*
@@ -392,9 +382,7 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
*/
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
@@ -407,10 +395,9 @@ static void do_signal(struct pt_regs *regs)
current->thread.esp0 = (unsigned long) regs;
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
- if (signr > 0) {
+ if (get_signal(&ksig)) {
/* Whee! Actually deliver the signal. */
- handle_signal(signr, &info, &ka, regs);
+ handle_signal(&ksig, regs);
return;
}
/* Did we come from a system call? */
--
1.8.1.4
--
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