Commit 052acad4 authored by Brian Gerst's avatar Brian Gerst Committed by H. Peter Anvin

x86: Merge sys_sigaltstack

Change 32-bit sys_sigaltstack to PTREGSCALL2, and merge with 64-bit.
Signed-off-by: default avatarBrian Gerst <brgerst@gmail.com>
LKML-Reference: <1260403316-5679-5-git-send-email-brgerst@gmail.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent 11cf88bd
......@@ -31,6 +31,9 @@ asmlinkage int sys_modify_ldt(int, void __user *, unsigned long);
/* kernel/signal.c */
long sys_rt_sigreturn(struct pt_regs *);
long sys_sigaltstack(const stack_t __user *, stack_t __user *,
struct pt_regs *);
/* kernel/tls.c */
asmlinkage int sys_set_thread_area(struct user_desc __user *);
......@@ -46,7 +49,6 @@ int sys_clone(struct pt_regs *);
asmlinkage int sys_sigsuspend(int, int, old_sigset_t);
asmlinkage int sys_sigaction(int, const struct old_sigaction __user *,
struct old_sigaction __user *);
int sys_sigaltstack(struct pt_regs *);
unsigned long sys_sigreturn(struct pt_regs *);
/* kernel/sys_i386_32.c */
......@@ -76,10 +78,6 @@ asmlinkage long sys_clone(unsigned long, unsigned long,
struct pt_regs *);
long sys_arch_prctl(int, unsigned long);
/* kernel/signal.c */
asmlinkage long sys_sigaltstack(const stack_t __user *, stack_t __user *,
struct pt_regs *);
/* kernel/sys_x86_64.c */
struct new_utsname;
......
......@@ -763,7 +763,7 @@ PTREGSCALL0(fork)
PTREGSCALL0(clone)
PTREGSCALL0(vfork)
PTREGSCALL3(execve)
PTREGSCALL0(sigaltstack)
PTREGSCALL2(sigaltstack)
PTREGSCALL0(sigreturn)
PTREGSCALL0(rt_sigreturn)
PTREGSCALL0(vm86)
......
......@@ -545,22 +545,12 @@ sys_sigaction(int sig, const struct old_sigaction __user *act,
}
#endif /* CONFIG_X86_32 */
#ifdef CONFIG_X86_32
int sys_sigaltstack(struct pt_regs *regs)
{
const stack_t __user *uss = (const stack_t __user *)regs->bx;
stack_t __user *uoss = (stack_t __user *)regs->cx;
return do_sigaltstack(uss, uoss, regs->sp);
}
#else /* !CONFIG_X86_32 */
asmlinkage long
long
sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
struct pt_regs *regs)
{
return do_sigaltstack(uss, uoss, regs->sp);
}
#endif /* CONFIG_X86_32 */
/*
* Do a signal return; undo the signal stack.
......
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