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x86: Merge sys_sigaltstack

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Change 32-bit sys_sigaltstack to PTREGSCALL2, and merge with 64-bit.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <1260403316-5679-5-git-send-email-brgerst@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Brian Gerst 2009-12-09 19:01:54 -05:00 • committed by H. Peter Anvin
parent 11cf88bd0b
commit 052acad48a
3 changed files with 5 additions and 17 deletions
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12
arch/x86/kernel/signal.c
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@ -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.