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| author | Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> | 2008-11-22 02:38:25 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-23 10:50:58 +0100 |
| commit | 666ac7be049ec290625e65d5922ff59f7bdec527 (patch) | |
| tree | 68b156d87aa32a55e231bdb547d616e8d7d76f23 /arch/x86/kernel/signal_64.c | |
| parent | x86: signal: cosmetic unification of including headers (diff) | |
| download | linux-666ac7be049ec290625e65d5922ff59f7bdec527.tar.xz linux-666ac7be049ec290625e65d5922ff59f7bdec527.zip | |
x86: signal: cosmetic unification of sys_sigaltstack()
Impact: cleanup
Add #ifdef directive for unification.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/signal_64.c')
| -rw-r--r-- | arch/x86/kernel/signal_64.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c index c52244ac19fc..b6e4fe03a36b 100644 --- a/arch/x86/kernel/signal_64.c +++ b/arch/x86/kernel/signal_64.c @@ -50,12 +50,27 @@ # define FIX_EFLAGS __FIX_EFLAGS #endif +#ifdef CONFIG_X86_32 +asmlinkage int sys_sigaltstack(unsigned long bx) +{ + /* + * This is needed to make gcc realize it doesn't own the + * "struct pt_regs" + */ + struct pt_regs *regs = (struct pt_regs *)&bx; + const stack_t __user *uss = (const stack_t __user *)bx; + stack_t __user *uoss = (stack_t __user *)regs->cx; + + return do_sigaltstack(uss, uoss, regs->sp); +} +#else /* !CONFIG_X86_32 */ asmlinkage 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 */ #define COPY(x) { \ err |= __get_user(regs->x, &sc->x); \ |