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1325 |
phoenix |
/*******************************************************************************
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*
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* Copyright (c) 1993 Intel Corporation
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*
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* Intel hereby grants you permission to copy, modify, and distribute this
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* software and its documentation. Intel grants this permission provided
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* that the above copyright notice appears in all copies and that both the
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* copyright notice and this permission notice appear in supporting
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* documentation. In addition, Intel grants this permission provided that
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* you prominently mark as "not part of the original" any modifications
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* made to this software or documentation, and that the name of Intel
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* Corporation not be used in advertising or publicity pertaining to
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* distribution of the software or the documentation without specific,
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* written prior permission.
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*
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* Intel Corporation provides this AS IS, WITHOUT ANY WARRANTY, EXPRESS OR
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* IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY
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* OR FITNESS FOR A PARTICULAR PURPOSE. Intel makes no guarantee or
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* representations regarding the use of, or the results of the use of,
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* the software and documentation in terms of correctness, accuracy,
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* reliability, currentness, or otherwise; and you rely on the software,
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* documentation and results solely at your own risk.
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*
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* IN NO EVENT SHALL INTEL BE LIABLE FOR ANY LOSS OF USE, LOSS OF BUSINESS,
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* LOSS OF PROFITS, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES
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* OF ANY KIND. IN NO EVENT SHALL INTEL'S TOTAL LIABILITY EXCEED THE SUM
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* PAID TO INTEL FOR THE PRODUCT LICENSED HEREUNDER.
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*
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******************************************************************************/
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/***************************************************************************
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*
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* Modified from the original in order to fit with
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* uClibc's setjmp, _setjmp, __sigsetjmp and ___sigjmp_save.
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*
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*
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* int setjmp (jmp_buf __env) is the BSD style setjmp function.
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* It simply calls __sigsetjmp(env, 1)
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*
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* int _setjmp (jmp_buf __env) is the posix style setjmp function.
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* It simply calls __sigsetjmp(env, 0)
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* This is the one normally used.
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*
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***************************************************************************/
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.text
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.align 4
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.globl _setjmp
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.globl __setjmp
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_setjmp:
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mov 1, g1 /* __sigsetjmp(env, 1) */
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bx __sigsetjmp
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__setjmp:
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mov 0, g1 /* __sigsetjmp(env, 0) */
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bx __sigsetjmp
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/******************************************************************************/
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/* */
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/* setjmp(), longjmp() */
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/* */
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/******************************************************************************/
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.file "setjmp.S"
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.text
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/* .link_pix */
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.align 4
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.globl __sigsetjmp
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__sigsetjmp:
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flushreg
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andnot 0xf,pfp,g2 /* get pfp, mask out return status bits */
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st g2, 0x58(g0) /* save fp of caller*/
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/* save globals not killed by the calling convention */
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stq g8, 0x40(g0) /* save g8-g11*/
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st g12, 0x50(g0) /* save g12*/
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st g14, 0x54(g0) /* save g14*/
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/* save previous frame local registers */
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ldq (g2), g4 /* get previous frame pfp, sp, rip, r3 */
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stq g4, (g0) /* save pfp, sp, rip, r3 */
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ldq 0x10(g2), g4 /* get previous frame r4-r7 */
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stq g4, 0x10(g0) /* save r4-r7 */
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ldq 0x20(g2), g4 /* get previous frame r8-r11 */
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stq g4, 0x20(g0) /* save r8-r11 */
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ldq 0x30(g2), g4 /* get previous frame r12-r15 */
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stq g4, 0x30(g0) /* save r12-r15 */
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bx ___sigjmp_save
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/*
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* fake a return to the place that called the corresponding __sigsetjmp
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*/
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.align 4
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.globl ___longjmp
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___longjmp:
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call 0f /* ensure there is at least one stack frame */
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0:
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flushreg /* do this before swapping stack */
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ld 0x58(g0), pfp /* get fp of caller of setjmp */
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/* restore local registers
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* the following code modifies the frame of the function which originally
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* called setjmp.
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*/
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ldq (g0), g4 /* get pfp, sp, rip, r3 */
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stq g4, (pfp) /* restore pfp, sp, rip, r3 */
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ldq 0x10(g0), g4 /* get r4-r7 */
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stq g4, 0x10(pfp) /* restore r4-r7 */
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ldq 0x20(g0), g4 /* get r8-r11 */
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stq g4, 0x20(pfp) /* restore r8-r11 */
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ldq 0x30(g0), g4 /* get r12-r15 */
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stq g4, 0x30(pfp) /* restore r12-r15 */
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/* restore global registers */
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ldq 0x40(g0), g8 /* get old g8-g11 values */
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ld 0x50(g0), g12 /* get old g12 value */
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ld 0x54(g0), g14 /* get old g14 value */
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mov g1, g0 /* get return value */
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cmpo g0, 0 /* make sure it is not zero */
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bne 0f
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mov 1, g0 /* return 1 by default */
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0:
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ret /* return to caller of __sigsetjmp */
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