diff options
Diffstat (limited to 'lib/libc/ia64/gen/sigsetjmp.S')
| -rw-r--r-- | lib/libc/ia64/gen/sigsetjmp.S | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/lib/libc/ia64/gen/sigsetjmp.S b/lib/libc/ia64/gen/sigsetjmp.S new file mode 100644 index 0000000..e3a9768 --- /dev/null +++ b/lib/libc/ia64/gen/sigsetjmp.S @@ -0,0 +1,75 @@ +/* $NetBSD: sigsetjmp.S,v 1.2 1996/10/17 03:08:07 cgd Exp $ */ +/* $FreeBSD$ */ + +/* + * Copyright (c) 1994, 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#define LOCORE +#include <machine/asm.h> +#include <machine/setjmp.h> + +/* + * C library -- sigsetjmp, siglongjmp + * + * siglongjmp(a,v) + * will generate a "return(v)" from + * the last call to + * sigsetjmp(a, mask) + * by restoring registers from the stack. + * If `mask' is non-zero, the previous signal + * state will be restored. + */ + +ENTRY(sigsetjmp, 2) + // + // Compensate for the pointer twiddling that setjmp does. + // + dep r14=r0,r32,0,4 + ;; + add r14=J_SIGMASK+0x10,r14 // place to save mask + ;; + st8 [r14]=in1 // save mask value + cmp.ne p6,p7=0,in1 // save signal state? +(p6) br.cond.dptk.many setjmp +(p7) br.cond.dpnt.many _setjmp +END(sigsetjmp) + + WEAK_ALIAS(siglongjmp,__siglongjmp) +ENTRY(__siglongjmp, 2) + // + // Compensate for the pointer twiddling that setjmp does. + // + dep r14=r0,r32,0,4 + ;; + add r14=J_SIGMASK+0x10,r14 // address of mask value + ;; + ld8 r14=[r14] + ;; + cmp.ne p6,p7=0,r14 // did we save signals? +(p6) br.cond.dptk.many longjmp +(p7) br.cond.dpnt.many _longjmp +END(__siglongjmp) |
