| /******************************************************************************* |
| * |
| * 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 */ |
