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[PATCH] x86-64: Support -mregparm arguments for signals with SA_SIGINFO in compat mode

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The recent change to make x86_64 support i386 binaries compiled
with -mregparm=3 only covered signal handlers without SA_SIGINFO.
(the 3-arg "real-time" ones)

To be compatible with i386, both types should be supported.

Signed-off-by: Albert Cahalan <acahalan@gmail.com>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Albert Cahalan 2006-12-07 02:14:06 +01:00 committed by Andi Kleen
parent b026872601
commit 8e3de538ee
1 changed files with 5 additions and 0 deletions
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5
arch/x86_64/ia32/ia32_signal.c
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@ -584,6 +584,11 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->rdx = (unsigned long) &frame->info;
regs->rcx = (unsigned long) &frame->uc;
/* Make -mregparm=3 work */
regs->rax = sig;
regs->rdx = (unsigned long) &frame->info;
regs->rcx = (unsigned long) &frame->uc;
asm volatile("movl %0,%%ds" :: "r" (__USER32_DS));
asm volatile("movl %0,%%es" :: "r" (__USER32_DS));