1/* $OpenBSD: sigsetjmp.S,v 1.2 2007/03/02 06:11:54 miod Exp $ */ 2/* $NetBSD: sigsetjmp.S,v 1.9 2006/01/05 19:21:37 uwe Exp $ */ 3 4/*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90 36 */ 37 38#include <machine/asm.h> 39#include <machine/setjmp.h> 40 41ENTRY(sigsetjmp) 42 tst r5, r5 /* if (savemask == 0) */ 43 bt 2f 44 45 /* identical to setjmp */ 46 PIC_PROLOGUE(.L_got_1) 47 sts.l pr, @-sp 48 mov.l r4, @-sp 49 mov.l r5, @-sp 50 51 mov.l .L_sigprocmask_1, r0 52 mov r4, r6 53 mov #1, r4 /* how = SIG_BLOCK */ 54 mov #0, r5 /* new = NULL */ 551: CALL r0 56 add #4, r6 /* old = &sigmask */ 57 58 mov.l @sp+, r5 59 mov.l @sp+, r4 60 lds.l @sp+, pr 61 PIC_EPILOGUE 62 632: /* identical to _setjmp except that first word is in r5 */ 64#if defined(__SH4__) && !defined(__SH4_NOFPU__) 65 add #(_JBLEN * 4), r4 66 sts fpscr, r1 67 xor r0, r0 68 mov.l r1, @-r4 69 lds r0, fpscr 70 sts.l fpul, @-r4 71 fmov.s fr15, @-r4 72 fmov.s fr14, @-r4 73 fmov.s fr13, @-r4 74 fmov.s fr12, @-r4 75 frchg 76 fmov.s fr15, @-r4 77 fmov.s fr14, @-r4 78 fmov.s fr13, @-r4 79 fmov.s fr12, @-r4 80 lds r1, fpscr 81#else 82 add #((_JBLEN - 10) * 4), r4 83#endif 84 sts.l mach, @-r4 85 sts.l macl, @-r4 86 mov.l r15, @-r4 87 mov.l r14, @-r4 88 mov.l r13, @-r4 89 mov.l r12, @-r4 90 mov.l r11, @-r4 91 mov.l r10, @-r4 92 mov.l r9, @-r4 93 mov.l r8, @-r4 94 sts.l pr, @-r4 95 add #-4, r4 /* skip signal mask */ 96 mov.l r5, @-r4 /* has signal mask? */ 97 rts 98 xor r0, r0 99 100 .align 2 101.L_got_1: PIC_GOT_DATUM 102.L_sigprocmask_1: CALL_DATUM(_C_LABEL(sigprocmask), 1b) 103 SET_ENTRY_SIZE(sigsetjmp) 104 105ENTRY(siglongjmp) 106 mov.l @r4+, r0 107 tst r0, r0 108 bt 2f /* if no mask */ 109 110 /* identical to longjmp */ 111 /* we won't return here, so we don't need to save pr and r12 */ 112 PIC_PROLOGUE_NOSAVE(.L_got_2) 113 mov.l r5, @-sp 114 mov.l r4, @-sp 115 116 mov.l .L_sigprocmask_2, r0 117 mov r4, r5 /* new = &sigmask */ 118 mov #3, r4 /* how = SIG_SETMASK */ 1191: CALL r0 120 mov #0, r6 /* old = NULL */ 121 122 mov.l @sp+, r4 123 mov.l @sp+, r5 124 1252: /* identical to _longjmp */ 126 add #4, r4 127 lds.l @r4+, pr 128 mov.l @r4+, r8 129 mov.l @r4+, r9 130 mov.l @r4+, r10 131 mov.l @r4+, r11 132 mov.l @r4+, r12 133 mov.l @r4+, r13 134 mov.l @r4+, r14 135 mov.l @r4+, r15 136 lds.l @r4+, macl 137 lds.l @r4+, mach 138#if defined(__SH4__) && !defined(__SH4_NOFPU__) 139 xor r0, r0 140 lds r0, fpscr 141 frchg 142 fmov.s @r4+, fr12 143 fmov.s @r4+, fr13 144 fmov.s @r4+, fr14 145 fmov.s @r4+, fr15 146 frchg 147 fmov.s @r4+, fr12 148 fmov.s @r4+, fr13 149 fmov.s @r4+, fr14 150 fmov.s @r4+, fr15 151 lds.l @r4+, fpul 152 lds.l @r4+, fpscr 153#endif 154 155 mov r5, r0 156 tst r0, r0 /* make sure return value is non-zero */ 157 bf .L0 158 add #1, r0 159.L0: 160 rts 161 nop 162 163 .align 2 164.L_got_2: PIC_GOT_DATUM 165.L_sigprocmask_2: CALL_DATUM(_C_LABEL(sigprocmask), 1b) 166 SET_ENTRY_SIZE(siglongjmp) 167