diff options
| author | Andi Kleen | 2006-09-26 10:52:41 +0200 |
|---|---|---|
| committer | Andi Kleen | 2006-09-26 10:52:41 +0200 |
| commit | 536e3ee4fed13d2d4bbf1b775174aba0cadf6aba (patch) | |
| tree | 74bd05ecdbada0e6029d0be13a2a4ec93dae0df0 /arch/x86_64/ia32 | |
| parent | dd54a11004b2c9a1f136225f880e021a43b0eadc (diff) | |
[PATCH] Initialize argument registers for 32bit signal handlers.
In case the user space was compiled with -mregparm=3
Following i386. Pointed out by Albert Cahalan
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64/ia32')
| -rw-r--r-- | arch/x86_64/ia32/ia32_signal.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86_64/ia32/ia32_signal.c b/arch/x86_64/ia32/ia32_signal.c index 2d20f8304b31..ced15012a3d7 100644 --- a/arch/x86_64/ia32/ia32_signal.c +++ b/arch/x86_64/ia32/ia32_signal.c @@ -478,6 +478,11 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka, regs->rsp = (unsigned long) frame; regs->rip = (unsigned long) ka->sa.sa_handler; + /* Make -mregparm=3 work */ + regs->rax = sig; + regs->rdx = 0; + regs->rcx = 0; + asm volatile("movl %0,%%ds" :: "r" (__USER32_DS)); asm volatile("movl %0,%%es" :: "r" (__USER32_DS)); |