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yaml
---
r: 137065
b: refs/heads/master
c: 1fae027
h: refs/heads/master
i:
  137063: 46515e9
v: v3
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Hiroshi Shimamoto authored and Ingo Molnar committed Feb 28, 2009
1 parent fab5844 commit 4bf4567
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Showing 2 changed files with 16 additions and 13 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 75779f05264b9968d7ae7ecb4ca5127b08785692
refs/heads/master: 1fae0279ce4811fa123001515d1ed3d68c1d557f
27 changes: 15 additions & 12 deletions trunk/arch/x86/kernel/signal.c
Original file line number Diff line number Diff line change
Expand Up @@ -191,6 +191,20 @@ setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
/*
* Determine which stack to use..
*/
static unsigned long align_sigframe(unsigned long sp)
{
#ifdef CONFIG_X86_32
/*
* Align the stack pointer according to the i386 ABI,
* i.e. so that on function entry ((sp + 4) & 15) == 0.
*/
sp = ((sp + 4) & -16ul) - 4;
#else /* !CONFIG_X86_32 */
sp = round_down(sp, 16) - 8;
#endif
return sp;
}

static inline void __user *
get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,
void __user **fpstate)
Expand Down Expand Up @@ -236,18 +250,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,
return (void __user *)-1L;
}

sp -= frame_size;
#ifdef CONFIG_X86_32
/*
* Align the stack pointer according to the i386 ABI,
* i.e. so that on function entry ((sp + 4) & 15) == 0.
*/
sp = ((sp + 4) & -16ul) - 4;
#else /* !CONFIG_X86_32 */
sp = round_down(sp, 16) - 8;
#endif

return (void __user *) sp;
return (void __user *)align_sigframe(sp - frame_size);
}

#ifdef CONFIG_X86_32
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