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Get ucontext pointer back out of callee-saved register %r15.

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fvdl 2003-10-17 16:23:20 +00:00
parent 0a3ddecb47
commit 2b9ab2aab8
1 changed files with 3 additions and 7 deletions
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10
lib/libc/arch/x86_64/sys/__sigtramp2.S
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@ -1,4 +1,4 @@
/* $NetBSD: __sigtramp2.S,v 1.1 2003/10/06 22:57:23 fvdl Exp $ */
/* $NetBSD: __sigtramp2.S,v 1.2 2003/10/17 16:23:20 fvdl Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
@ -40,14 +40,10 @@
/*
* The x86-64 signal trampoline is invoked only to return from
* the signal; the kernel calls the signal handler directly.
*
* On entry, the stack looks like:
*
* sp-> sigcontext structure
*/
NENTRY(__sigtramp_siginfo_2)
movq %rsp,%r10
pushq %r10 /* fake return address */
movq %r15,%rdi
pushq $0 /* fake return address */
movq $SYS_setcontext, %rax
syscall
movq $SYS_exit, %rax