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update to use sigaltstack.

This commit is contained in:
chopps 1994-05-10 08:15:57 +00:00
parent 2d887fef6f
commit a6a8e78548
1 changed files with 6 additions and 5 deletions
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11
lib/libc/arch/m68k/gen/setjmp.S
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@ -38,7 +38,7 @@
#if defined(LIBC_SCCS) && !defined(lint)
.text
/*.asciz "from: @(#)setjmp.s 5.1 (Berkeley) 5/12/90"*/
.asciz "$Id: setjmp.S,v 1.1 1993/11/25 23:37:19 paulus Exp $"
.asciz "$Id: setjmp.S,v 1.2 1994/05/10 08:15:57 chopps Exp $"
#endif /* LIBC_SCCS and not lint */
/*
@ -55,14 +55,15 @@
#include "DEFS.h"
ENTRY(setjmp)
subql #8,sp /* space for sigstack args/rvals */
subl #12,sp /* space for sigstack args/rvals */
clrl sp@ /* don't change it... */
movl sp,sp@(4) /* ...but return the current val */
jbsr _sigstack /* note: onstack returned in sp@(4) */
jbsr _sigaltstack /* note: flags returned in sp@(8) */
clrl sp@ /* don't change mask, just return */
jbsr _sigblock /* old value */
movl sp@(4),d1 /* old onstack value */
addql #8,sp
movl sp@(8),d1 /* old flags value */
andl #1,d1 /* extract onstack flag */
addl #12,sp
movl sp@(4),a0 /* save area pointer */
movl d1,a0@+ /* save old onstack value */
movl d0,a0@+ /* save old signal mask */