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/*******************************************************************************
*
* Copyright (c) 1993 Intel Corporation
*
* Intel hereby grants you permission to copy, modify, and distribute this
* software and its documentation. Intel grants this permission provided
* that the above copyright notice appears in all copies and that both the
* copyright notice and this permission notice appear in supporting
* documentation. In addition, Intel grants this permission provided that
* you prominently mark as "not part of the original" any modifications
* made to this software or documentation, and that the name of Intel
* Corporation not be used in advertising or publicity pertaining to
* distribution of the software or the documentation without specific,
* written prior permission.
*
* Intel Corporation provides this AS IS, WITHOUT ANY WARRANTY, EXPRESS OR
* IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY
* OR FITNESS FOR A PARTICULAR PURPOSE. Intel makes no guarantee or
* representations regarding the use of, or the results of the use of,
* the software and documentation in terms of correctness, accuracy,
* reliability, currentness, or otherwise; and you rely on the software,
* documentation and results solely at your own risk.
*
* IN NO EVENT SHALL INTEL BE LIABLE FOR ANY LOSS OF USE, LOSS OF BUSINESS,
* LOSS OF PROFITS, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES
* OF ANY KIND. IN NO EVENT SHALL INTEL'S TOTAL LIABILITY EXCEED THE SUM
* PAID TO INTEL FOR THE PRODUCT LICENSED HEREUNDER.
*
******************************************************************************/
/***************************************************************************
*
* Modified from the original in order to fit with
* uClibc's setjmp, _setjmp, __sigsetjmp and ___sigjmp_save.
*
*
* int setjmp (jmp_buf __env) is the BSD style setjmp function.
* It simply calls __sigsetjmp(env, 1)
*
* int _setjmp (jmp_buf __env) is the posix style setjmp function.
* It simply calls __sigsetjmp(env, 0)
* This is the one normally used.
*
***************************************************************************/
.text
.align 4
.globl _setjmp
.globl __setjmp
_setjmp:
mov 1, g1 /* __sigsetjmp(env, 1) */
bx __sigsetjmp
__setjmp:
mov 0, g1 /* __sigsetjmp(env, 0) */
bx __sigsetjmp
/******************************************************************************/
/* */
/* setjmp(), longjmp() */
/* */
/******************************************************************************/
.file "setjmp.S"
.text
/* .link_pix */
.align 4
.globl __sigsetjmp
__sigsetjmp:
flushreg
andnot 0xf,pfp,g2 /* get pfp, mask out return status bits */
st g2, 0x58(g0) /* save fp of caller*/
/* save globals not killed by the calling convention */
stq g8, 0x40(g0) /* save g8-g11*/
st g12, 0x50(g0) /* save g12*/
st g14, 0x54(g0) /* save g14*/
/* save previous frame local registers */
ldq (g2), g4 /* get previous frame pfp, sp, rip, r3 */
stq g4, (g0) /* save pfp, sp, rip, r3 */
ldq 0x10(g2), g4 /* get previous frame r4-r7 */
stq g4, 0x10(g0) /* save r4-r7 */
ldq 0x20(g2), g4 /* get previous frame r8-r11 */
stq g4, 0x20(g0) /* save r8-r11 */
ldq 0x30(g2), g4 /* get previous frame r12-r15 */
stq g4, 0x30(g0) /* save r12-r15 */
bx ___sigjmp_save
/*
* fake a return to the place that called the corresponding __sigsetjmp
*/
.align 4
.globl ___longjmp
___longjmp:
call 0f /* ensure there is at least one stack frame */
0:
flushreg /* do this before swapping stack */
ld 0x58(g0), pfp /* get fp of caller of setjmp */
/* restore local registers
* the following code modifies the frame of the function which originally
* called setjmp.
*/
ldq (g0), g4 /* get pfp, sp, rip, r3 */
stq g4, (pfp) /* restore pfp, sp, rip, r3 */
ldq 0x10(g0), g4 /* get r4-r7 */
stq g4, 0x10(pfp) /* restore r4-r7 */
ldq 0x20(g0), g4 /* get r8-r11 */
stq g4, 0x20(pfp) /* restore r8-r11 */
ldq 0x30(g0), g4 /* get r12-r15 */
stq g4, 0x30(pfp) /* restore r12-r15 */
/* restore global registers */
ldq 0x40(g0), g8 /* get old g8-g11 values */
ld 0x50(g0), g12 /* get old g12 value */
ld 0x54(g0), g14 /* get old g14 value */
mov g1, g0 /* get return value */
cmpo g0, 0 /* make sure it is not zero */
bne 0f
mov 1, g0 /* return 1 by default */
0:
ret /* return to caller of __sigsetjmp */
libc_hidden_def(__longjmp)
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