---

yaml --- r: 356743 b: refs/heads/master c: 7a879a9 h: refs/heads/master i: 356741: 0810056 356739: 3d7d3a9 356735: 07eef1e v: v3
git-mirror · Feb 3, 2013 · e391cbb · e391cbb
1 parent 6bf4f26
commit e391cbb
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Showing 9 changed files with 31 additions and 42 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b774cc5cb6b3b53b276bb7d968e3579afc2922c5
+refs/heads/master: 7a879a94d90dc5c494875b54499ae321400358d8
diff --git a/trunk/arch/score/Kconfig b/trunk/arch/score/Kconfig
@@ -14,7 +14,6 @@ config SCORE
        select HAVE_MOD_ARCH_SPECIFIC
 	select MODULES_USE_ELF_REL
 	select CLONE_BACKWARDS
-	select GENERIC_SIGALTSTACK
 
 choice
 	prompt "System type"

diff --git a/trunk/arch/score/include/asm/syscalls.h b/trunk/arch/score/include/asm/syscalls.h
@@ -1,6 +1,7 @@
 #ifndef _ASM_SCORE_SYSCALLS_H
 #define _ASM_SCORE_SYSCALLS_H
 
+asmlinkage long score_sigaltstack(struct pt_regs *regs);
 asmlinkage long score_rt_sigreturn(struct pt_regs *regs);
 
 #include <asm-generic/syscalls.h>

diff --git a/trunk/arch/score/kernel/entry.S b/trunk/arch/score/kernel/entry.S
@@ -491,3 +491,8 @@ ENTRY(sys_rt_sigreturn)
 	mv	r4, r0
 	la	r8, score_rt_sigreturn
 	br	r8
+
+ENTRY(sys_sigaltstack)
+	mv	r4, r0
+	la	r8, score_sigaltstack
+	br	r8
diff --git a/trunk/arch/score/kernel/signal.c b/trunk/arch/score/kernel/signal.c
@@ -133,6 +133,16 @@ static void __user *get_sigframe(struct k_sigaction *ka,
 	return (void __user*)((sp - frame_size) & ~7);
 }
 
+asmlinkage long
+score_sigaltstack(struct pt_regs *regs)
+{
+	const stack_t __user *uss = (const stack_t __user *) regs->regs[4];
+	stack_t __user *uoss = (stack_t __user *) regs->regs[5];
+	unsigned long usp = regs->regs[0];
+
+	return do_sigaltstack(uss, uoss, usp);
+}
+
 asmlinkage long
 score_rt_sigreturn(struct pt_regs *regs)
 {
@@ -157,7 +167,9 @@ score_rt_sigreturn(struct pt_regs *regs)
 	else if (sig)
 		force_sig(sig, current);
 
-	if (restore_altstack(&frame->rs_uc.uc_stack))
+	/* It is more difficult to avoid calling this function than to
+	   call it and ignore errors.  */
+	if (do_sigaltstack(&frame->rs_uc.uc_stack, NULL, regs->regs[0]) == -EFAULT)
 		goto badframe;
 	regs->is_syscall = 0;
 
@@ -197,7 +209,12 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
 	err |= copy_siginfo_to_user(&frame->rs_info, info);
 	err |= __put_user(0, &frame->rs_uc.uc_flags);
 	err |= __put_user(NULL, &frame->rs_uc.uc_link);
-	err |= __save_altstack(&frame->rs_uc.uc_stack, regs->regs[0]);
+	err |= __put_user((void __user *)current->sas_ss_sp,
+				&frame->rs_uc.uc_stack.ss_sp);
+	err |= __put_user(sas_ss_flags(regs->regs[0]),
+				&frame->rs_uc.uc_stack.ss_flags);
+	err |= __put_user(current->sas_ss_size,
+				&frame->rs_uc.uc_stack.ss_size);
 	err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext);
 	err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
 

diff --git a/trunk/arch/sh/Kconfig b/trunk/arch/sh/Kconfig
@@ -40,6 +40,7 @@ config SUPERH
 	select GENERIC_STRNLEN_USER
 	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
 	select MODULES_USE_ELF_RELA
+	select GENERIC_SIGALTSTACK
 	help
 	  The SuperH is a RISC processor targeted for use in embedded systems
 	  and consumer electronics; it was also used in the Sega Dreamcast

diff --git a/trunk/arch/sh/include/asm/syscalls_32.h b/trunk/arch/sh/include/asm/syscalls_32.h
@@ -12,9 +12,6 @@ struct pt_regs;
 asmlinkage int sys_sigsuspend(old_sigset_t mask);
 asmlinkage int sys_sigaction(int sig, const struct old_sigaction __user *act,
 			     struct old_sigaction __user *oact);
-asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
-			       unsigned long r6, unsigned long r7,
-			       struct pt_regs __regs);
 asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5,
 			     unsigned long r6, unsigned long r7,
 			     struct pt_regs __regs);

diff --git a/trunk/arch/sh/kernel/signal_32.c b/trunk/arch/sh/kernel/signal_32.c
@@ -89,17 +89,6 @@ sys_sigaction(int sig, const struct old_sigaction __user *act,
 	return ret;
 }
 
-asmlinkage int
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
-		unsigned long r6, unsigned long r7,
-		struct pt_regs __regs)
-{
-	struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
-
-	return do_sigaltstack(uss, uoss, regs->regs[15]);
-}
-
-
 /*
  * Do a signal return; undo the signal stack.
  */
@@ -257,8 +246,7 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5,
 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
 		goto badframe;
 
-	if (do_sigaltstack(&frame->uc.uc_stack, NULL,
-			   regs->regs[15]) == -EFAULT)
+	if (restore_altstack(&frame->uc.uc_stack))
 		goto badframe;
 
 	return r0;
@@ -423,11 +411,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __put_user(NULL, &frame->uc.uc_link);
-	err |= __put_user((void *)current->sas_ss_sp,
-			  &frame->uc.uc_stack.ss_sp);
-	err |= __put_user(sas_ss_flags(regs->regs[15]),
-			  &frame->uc.uc_stack.ss_flags);
-	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+	err |= __save_altstack(&frame->uc.uc_stack, regs->regs[15]);
 	err |= setup_sigcontext(&frame->uc.uc_mcontext,
 			        regs, set->sig[0]);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));

diff --git a/trunk/arch/sh/kernel/signal_64.c b/trunk/arch/sh/kernel/signal_64.c
@@ -170,15 +170,6 @@ sys_sigaction(int sig, const struct old_sigaction __user *act,
 	return ret;
 }
 
-asmlinkage int
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
-	        unsigned long r4, unsigned long r5, unsigned long r6,
-	        unsigned long r7,
-	        struct pt_regs * regs)
-{
-	return do_sigaltstack(uss, uoss, REF_REG_SP);
-}
-
 /*
  * Do a signal return; undo the signal stack.
  */
@@ -364,9 +355,7 @@ asmlinkage int sys_rt_sigreturn(unsigned long r2, unsigned long r3,
 		goto badframe;
 	regs->pc -= 4;
 
-	/* It is more difficult to avoid calling this function than to
-	   call it and ignore errors.  */
-	if (do_sigaltstack(&frame->uc.uc_stack, NULL, REF_REG_SP) == -EFAULT)
+	if (restore_altstack(&frame->uc.uc_stack))
 		goto badframe;
 
 	return (int) ret;
@@ -560,11 +549,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __put_user(0, &frame->uc.uc_link);
-	err |= __put_user((void *)current->sas_ss_sp,
-			  &frame->uc.uc_stack.ss_sp);
-	err |= __put_user(sas_ss_flags(regs->regs[REG_SP]),
-			  &frame->uc.uc_stack.ss_flags);
-	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+	err |= __save_altstack(&frame->uc.uc_stack, regs->regs[REG_SP]);
 	err |= setup_sigcontext(&frame->uc.uc_mcontext,
 			        regs, set->sig[0]);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));