1 /*******************************************************************************
3 * Copyright (c) 1993 Intel Corporation
5 * Intel hereby grants you permission to copy, modify, and distribute this
6 * software and its documentation. Intel grants this permission provided
7 * that the above copyright notice appears in all copies and that both the
8 * copyright notice and this permission notice appear in supporting
9 * documentation. In addition, Intel grants this permission provided that
10 * you prominently mark as "not part of the original" any modifications
11 * made to this software or documentation, and that the name of Intel
12 * Corporation not be used in advertising or publicity pertaining to
13 * distribution of the software or the documentation without specific,
14 * written prior permission.
16 * Intel Corporation provides this AS IS, WITHOUT ANY WARRANTY, EXPRESS OR
17 * IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY
18 * OR FITNESS FOR A PARTICULAR PURPOSE. Intel makes no guarantee or
19 * representations regarding the use of, or the results of the use of,
20 * the software and documentation in terms of correctness, accuracy,
21 * reliability, currentness, or otherwise; and you rely on the software,
22 * documentation and results solely at your own risk.
24 * IN NO EVENT SHALL INTEL BE LIABLE FOR ANY LOSS OF USE, LOSS OF BUSINESS,
25 * LOSS OF PROFITS, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES
26 * OF ANY KIND. IN NO EVENT SHALL INTEL'S TOTAL LIABILITY EXCEED THE SUM
27 * PAID TO INTEL FOR THE PRODUCT LICENSED HEREUNDER.
29 ******************************************************************************/
31 /******************************************************************************/
33 /* setjmp(), longjmp() */
35 /******************************************************************************/
44 andnot 0xf,pfp,g1 /* get pfp, mask out return status bits */
45 st g1, 0x58(g0) /* save fp of caller*/
46 /* save globals not killed by the calling convention */
47 stq g8, 0x40(g0) /* save g8-g11*/
48 st g12, 0x50(g0) /* save g12*/
49 st g14, 0x54(g0) /* save g14*/
50 /* save previous frame local registers */
51 ldq (g1), g4 /* get previous frame pfp, sp, rip, r3 */
52 stq g4, (g0) /* save pfp, sp, rip, r3 */
53 ldq 0x10(g1), g4 /* get previous frame r4-r7 */
54 stq g4, 0x10(g0) /* save r4-r7 */
55 ldq 0x20(g1), g4 /* get previous frame r8-r11 */
56 stq g4, 0x20(g0) /* save r8-r11 */
57 ldq 0x30(g1), g4 /* get previous frame r12-r15 */
58 stq g4, 0x30(g0) /* save r12-r15 */
60 mov 0, g0 /* return 0 */
64 * fake a return to the place that called the corresponding _setjmp
69 call 0f /* ensure there is at least one stack frame */
72 flushreg /* do this before swapping stack */
73 ld 0x58(g0), pfp /* get fp of caller of setjmp */
74 /* restore local registers
75 * the following code modifies the frame of the function which originally
78 ldq (g0), g4 /* get pfp, sp, rip, r3 */
79 stq g4, (pfp) /* restore pfp, sp, rip, r3 */
80 ldq 0x10(g0), g4 /* get r4-r7 */
81 stq g4, 0x10(pfp) /* restore r4-r7 */
82 ldq 0x20(g0), g4 /* get r8-r11 */
83 stq g4, 0x20(pfp) /* restore r8-r11 */
84 ldq 0x30(g0), g4 /* get r12-r15 */
85 stq g4, 0x30(pfp) /* restore r12-r15 */
86 /* restore global registers */
87 ldq 0x40(g0), g8 /* get old g8-g11 values */
88 ld 0x50(g0), g12 /* get old g12 value */
89 ld 0x54(g0), g14 /* get old g14 value */
91 mov g1, g0 /* get return value */
92 cmpo g0, 0 /* make sure it is not zero */
94 mov 1, g0 /* return 1 by default */
96 ret /* return to caller of _setjmp */