1/* $NetBSD: _setjmp.S,v 1.20 2005/10/07 17:16:40 tsutsui Exp $ */
| 1/* $NetBSD: _setjmp.S,v 1.20.34.5 2010/02/03 23:46:47 matt Exp $ */
|
2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h>
| 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h>
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36__FBSDID("$FreeBSD: head/lib/libc/mips/gen/_setjmp.S 178580 2008-04-26 12:08:02Z imp $");
| 36__FBSDID("$FreeBSD: head/lib/libc/mips/gen/_setjmp.S 209231 2010-06-16 12:55:14Z jchandra $");
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37#include <machine/regnum.h> 38
| 37#include <machine/regnum.h> 38
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| 39#include "SYS.h" 40
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39#if defined(LIBC_SCCS) && !defined(lint)
| 41#if defined(LIBC_SCCS) && !defined(lint)
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40 ASMSTR("from: @(#)_setjmp.s 8.1 (Berkeley) 6/4/93") 41 ASMSTR("$NetBSD: _setjmp.S,v 1.20 2005/10/07 17:16:40 tsutsui Exp $")
| 42#if 0 43 RCSID("from: @(#)_setjmp.s 8.1 (Berkeley) 6/4/93") 44#else 45 RCSID("$NetBSD: _setjmp.S,v 1.20.34.5 2010/02/03 23:46:47 matt Exp $") 46#endif
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42#endif /* LIBC_SCCS and not lint */ 43
| 47#endif /* LIBC_SCCS and not lint */ 48
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44#ifdef __ABICALLS__ 45 .abicalls 46#endif 47
| |
48/* 49 * C library -- _setjmp, _longjmp 50 * 51 * _longjmp(a,v) 52 * will generate a "return(v)" from 53 * the last call to 54 * _setjmp(a) 55 * by restoring registers from the stack, 56 * The previous signal state is NOT restored. 57 */ 58
| 49/* 50 * C library -- _setjmp, _longjmp 51 * 52 * _longjmp(a,v) 53 * will generate a "return(v)" from 54 * the last call to 55 * _setjmp(a) 56 * by restoring registers from the stack, 57 * The previous signal state is NOT restored. 58 */ 59
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| 60 .set noreorder
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59 60LEAF(_setjmp)
| 61 62LEAF(_setjmp)
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61#ifdef __ABICALLS__ 62 .set noreorder 63 .cpload t9 64 subu sp, sp, CALLFRAME_SIZ # allocate stack frame 65 .cprestore 16
| 63 REG_PROLOGUE 64 REG_LI v0, _JB_MAGIC__SETJMP 65 REG_S v0, (_JB_MAGIC * SZREG)(a0) 66 REG_S ra, (_JB_REG_RA * SZREG)(a0) 67 REG_S s0, (_JB_REG_S0 * SZREG)(a0) 68 REG_S s1, (_JB_REG_S1 * SZREG)(a0) 69 REG_S s2, (_JB_REG_S2 * SZREG)(a0) 70 REG_S s3, (_JB_REG_S3 * SZREG)(a0) 71 REG_S s4, (_JB_REG_S4 * SZREG)(a0) 72 REG_S s5, (_JB_REG_S5 * SZREG)(a0) 73 REG_S s6, (_JB_REG_S6 * SZREG)(a0) 74 REG_S s7, (_JB_REG_S7 * SZREG)(a0) 75 REG_S s8, (_JB_REG_S8 * SZREG)(a0) 76#if defined(__mips_n32) || defined(__mips_n64) 77 REG_S gp, (_JB_REG_GP * SZREG)(a0) # newabi gp is callee-saved
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66#endif
| 78#endif
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67 li v0, _JB_MAGIC__SETJMP 68 sw v0, (_JB_MAGIC * SZREG)(a0) 69 sw ra, (_JB_REG_RA * SZREG)(a0) 70 sw s0, (_JB_REG_S0 * SZREG)(a0) 71 sw s1, (_JB_REG_S1 * SZREG)(a0) 72 sw s2, (_JB_REG_S2 * SZREG)(a0) 73 sw s3, (_JB_REG_S3 * SZREG)(a0) 74 sw s4, (_JB_REG_S4 * SZREG)(a0) 75 sw s5, (_JB_REG_S5 * SZREG)(a0) 76 sw s6, (_JB_REG_S6 * SZREG)(a0) 77 sw s7, (_JB_REG_S7 * SZREG)(a0) 78 sw s8, (_JB_REG_S8 * SZREG)(a0) 79#ifdef __ABICALLS__ 80 addu sp, sp, CALLFRAME_SIZ # un-allocate the stack frame 81#endif 82 sw sp, (_JB_REG_SP * SZREG)(a0)
| 79 REG_S sp, (_JB_REG_SP * SZREG)(a0) 80 REG_EPILOGUE 81
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83 j ra 84 move v0, zero 85END(_setjmp) 86 87LEAF(_longjmp)
| 82 j ra 83 move v0, zero 84END(_setjmp) 85 86LEAF(_longjmp)
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88#ifdef __ABICALLS__ 89 .set noreorder 90 .cpload t9 91 subu sp, sp, CALLFRAME_SIZ # allocate stack frame 92 .cprestore 16 93#endif 94 lw v0, (_JB_MAGIC * SZREG)(a0) 95 lw ra, (_JB_REG_RA * SZREG)(a0) 96 li t0, _JB_MAGIC__SETJMP 97 bne v0, t0, botch # jump if error 98 lw s0, (_JB_REG_S0 * SZREG)(a0) 99 lw s1, (_JB_REG_S1 * SZREG)(a0) 100 lw s2, (_JB_REG_S2 * SZREG)(a0) 101 lw s3, (_JB_REG_S3 * SZREG)(a0) 102 lw s4, (_JB_REG_S4 * SZREG)(a0) 103 lw s5, (_JB_REG_S5 * SZREG)(a0) 104 lw s6, (_JB_REG_S6 * SZREG)(a0) 105 lw s7, (_JB_REG_S7 * SZREG)(a0) 106 lw sp, (_JB_REG_SP * SZREG)(a0) 107 lw s8, (_JB_REG_S8 * SZREG)(a0)
| 87 PIC_PROLOGUE(_longjmp) 88 PTR_SUBU sp, sp, CALLFRAME_SIZ 89 SAVE_GP(CALLFRAME_GP)
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108
| 90
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| 91 REG_PROLOGUE 92 REG_L v0, (_JB_MAGIC * SZREG)(a0) # get magic number 93 REG_L ra, (_JB_REG_RA * SZREG)(a0) 94 REG_LI t0, _JB_MAGIC__SETJMP 95 bne v0, t0, botch # jump if error 96 PTR_ADDU sp, sp, CALLFRAME_SIZ # does not matter, sanity 97 REG_L s0, (_JB_REG_S0 * SZREG)(a0) 98 REG_L s1, (_JB_REG_S1 * SZREG)(a0) 99 REG_L s2, (_JB_REG_S2 * SZREG)(a0) 100 REG_L s3, (_JB_REG_S3 * SZREG)(a0) 101 REG_L s4, (_JB_REG_S4 * SZREG)(a0) 102 REG_L s5, (_JB_REG_S5 * SZREG)(a0) 103 REG_L s6, (_JB_REG_S6 * SZREG)(a0) 104 REG_L s7, (_JB_REG_S7 * SZREG)(a0) 105#if defined(__mips_n32) || defined(__mips_n64) 106 REG_L gp, (_JB_REG_GP * SZREG)(a0) 107#endif 108 REG_L sp, (_JB_REG_SP * SZREG)(a0) 109 REG_L s8, (_JB_REG_S8 * SZREG)(a0) 110 111 REG_EPILOGUE 112 move v0, a1 # get return value in 1st arg
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109 j ra
| 113 j ra
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110 move v0, a1
| 114 nop
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111 112botch:
| 115 116botch:
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113 jal _C_LABEL(longjmperror)
| 117 /* 118 * We know we aren't returning so we don't care about restoring 119 * our caller's GP. 120 */ 121 PTR_LA t9, _C_LABEL(longjmperror) 122 jalr t9
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114 nop
| 123 nop
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115 jal _C_LABEL(abort) 116 nop
| 124 125 PIC_TAILCALL(abort)
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117END(_longjmp)
| 126END(_longjmp)
|