| Current Path : /usr/src/lib/libc/powerpc64/gen/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/lib/libc/powerpc64/gen/sigsetjmp.S |
/*-
* Copyright (c) 2002 Peter Grehan.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* $NetBSD: sigsetjmp.S,v 1.4 1998/10/03 12:30:38 tsubai Exp $ */
#include <machine/asm.h>
__FBSDID("$FreeBSD: release/9.1.0/lib/libc/powerpc64/gen/sigsetjmp.S 234520 2012-04-21 00:26:03Z nwhitehorn $");
/*
* C library -- sigsetjmp, siglongjmp
*
* siglongjmp(a,v)
* will generate a "return(v?v:1)" from the last call to
* sigsetjmp(a, savemask)
* by restoring registers from the stack.
* The previous signal state is restored if savemask is non-zero
*
* jmpbuf layout:
* +------------+
* | savemask |
* +------------+
* | sig state |
* | |
* | (4 words) |
* | |
* +------------+
* | saved regs |
* | ... |
*/
#include <sys/syscall.h>
ENTRY(sigsetjmp)
mr %r6,%r3
stw %r4,0(%r3)
or. %r7,%r4,%r4
beq 1f
li %r3,1 /* SIG_BLOCK, but doesn't matter */
/* since set == NULL */
li %r4,0 /* set = NULL */
mr %r5,%r6 /* &oset */
addi %r5,%r5,4
li %r0, SYS_sigprocmask /* sigprocmask(SIG_BLOCK, NULL, &oset)*/
sc /* assume no error XXX */
1:
mflr %r11
mfcr %r12
mr %r10,%r1
mr %r9,%r2
std %r9,40 + 0*8(%r6)
std %r10,40 + 1*8(%r6)
std %r11,40 + 2*8(%r6)
std %r12,40 + 3*8(%r6)
std %r13,40 + 4*8(%r6)
std %r14,40 + 5*8(%r6)
std %r15,40 + 6*8(%r6)
std %r16,40 + 7*8(%r6)
std %r17,40 + 8*8(%r6)
std %r18,40 + 9*8(%r6)
std %r19,40 + 10*8(%r6)
std %r20,40 + 11*8(%r6)
std %r21,40 + 12*8(%r6)
std %r22,40 + 13*8(%r6)
std %r23,40 + 14*8(%r6)
std %r24,40 + 15*8(%r6)
std %r25,40 + 16*8(%r6)
std %r26,40 + 17*8(%r6)
std %r27,40 + 18*8(%r6)
std %r28,40 + 19*8(%r6)
std %r29,40 + 20*8(%r6)
std %r30,40 + 21*8(%r6)
std %r31,40 + 22*8(%r6)
li %r3,0
blr
ENTRY(siglongjmp)
ld %r9,40 + 0*8(%r3)
ld %r10,40 + 1*8(%r3)
ld %r11,40 + 2*8(%r3)
ld %r12,40 + 3*8(%r3)
ld %r14,40 + 5*8(%r3)
ld %r15,40 + 6*8(%r3)
ld %r16,40 + 7*8(%r3)
ld %r17,40 + 8*8(%r3)
ld %r18,40 + 9*8(%r3)
ld %r19,40 + 10*8(%r3)
ld %r20,40 + 11*8(%r3)
ld %r21,40 + 12*8(%r3)
ld %r22,40 + 13*8(%r3)
ld %r23,40 + 14*8(%r3)
ld %r24,40 + 15*8(%r3)
ld %r25,40 + 16*8(%r3)
ld %r26,40 + 17*8(%r3)
ld %r27,40 + 18*8(%r3)
ld %r28,40 + 19*8(%r3)
ld %r29,40 + 20*8(%r3)
ld %r30,40 + 21*8(%r3)
ld %r31,40 + 22*8(%r3)
lwz %r7,0(%r3)
mr %r6,%r4
mtlr %r11
mtcr %r12
mr %r2,%r9
mr %r1,%r10
or. %r7,%r7,%r7
beq 1f
mr %r4,%r3
li %r3,3 /* SIG_SETMASK */
addi %r4,%r4,4 /* &set */
li %r5,0 /* oset = NULL */
li %r0,SYS_sigprocmask /* sigprocmask(SIG_SET, &set, NULL) */
sc /* assume no error XXX */
1:
or. %r3,%r6,%r6
bnelr
li %r3,1
blr
.section .note.GNU-stack,"",%progbits