97 lines
3.8 KiB
ArmAsm
97 lines
3.8 KiB
ArmAsm
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
/******************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* setjmp(), longjmp() */
|
||
|
|
/* */
|
||
|
|
/******************************************************************************/
|
||
|
|
.file "setjmp.as"
|
||
|
|
.text
|
||
|
|
/* .link_pix */
|
||
|
|
|
||
|
|
.align 4
|
||
|
|
.globl _setjmp
|
||
|
|
_setjmp:
|
||
|
|
flushreg
|
||
|
|
andnot 0xf,pfp,g1 /* get pfp, mask out return status bits */
|
||
|
|
st g1, 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 (g1), g4 /* get previous frame pfp, sp, rip, r3 */
|
||
|
|
stq g4, (g0) /* save pfp, sp, rip, r3 */
|
||
|
|
ldq 0x10(g1), g4 /* get previous frame r4-r7 */
|
||
|
|
stq g4, 0x10(g0) /* save r4-r7 */
|
||
|
|
ldq 0x20(g1), g4 /* get previous frame r8-r11 */
|
||
|
|
stq g4, 0x20(g0) /* save r8-r11 */
|
||
|
|
ldq 0x30(g1), g4 /* get previous frame r12-r15 */
|
||
|
|
stq g4, 0x30(g0) /* save r12-r15 */
|
||
|
|
|
||
|
|
mov 0, g0 /* return 0 */
|
||
|
|
ret
|
||
|
|
|
||
|
|
/*
|
||
|
|
* fake a return to the place that called the corresponding _setjmp
|
||
|
|
*/
|
||
|
|
.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 _setjmp */
|