setjmp.S revision 1.7
1 /* $NetBSD: setjmp.S,v 1.7 2005/09/15 22:44:58 uwe Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 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 * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90 35 */ 36 37 #include <machine/asm.h> 38 #if defined(LIBC_SCCS) 39 RCSID("$NetBSD: setjmp.S,v 1.7 2005/09/15 22:44:58 uwe Exp $") 40 #endif 41 42 /* 43 * C library -- _setjmp, _longjmp 44 * 45 * longjmp(a,v) 46 * will generate a "return(v)" from the last call to 47 * setjmp(a) 48 * by restoring registers from the stack. 49 * The previous signal state is restored. 50 */ 51 52 ENTRY(__setjmp14) 53 sts.l pr, @-r15 54 mov.l r4, @-r15 55 mov r4, r6 56 mov #1, r4 /* SIG_BLOCK */ 57 mov #0, r5 58 add #4*10, r6 /* &sigmask */ 59 60 #ifdef PIC 61 mov.l L__sigprocmask14r1, r0 62 bsrf r0 63 nop 64 L__sigprocmask14o1: 65 #else 66 mov.l L__sigprocmask14, r0 67 jsr @r0 68 nop 69 #endif 70 71 mov.l @r15+, r4 72 lds.l @r15+, pr 73 add #4*10, r4 74 mov #1, r0 75 mov.l r0, @-r4 /* savemask */ 76 mov.l r15, @-r4 77 mov.l r14, @-r4 78 mov.l r13, @-r4 79 mov.l r12, @-r4 80 mov.l r11, @-r4 81 mov.l r10, @-r4 82 mov.l r9, @-r4 83 mov.l r8, @-r4 84 sts.l pr, @-r4 85 rts 86 xor r0, r0 87 88 ENTRY(__longjmp14) 89 mov.l r4, @-r15 90 mov.l r5, @-r15 91 92 mov r4, r5 93 mov #3, r4 /* SIG_SETMASK */ 94 add #4*10, r5 /* &sigmask */ 95 mov #0, r6 96 #ifdef PIC 97 mov.l L__sigprocmask14r2, r0 98 bsrf r0 99 nop 100 L__sigprocmask14o2: 101 #else 102 mov.l L__sigprocmask14, r0 103 jsr @r0 104 nop 105 #endif 106 mov.l @r15+, r5 107 mov.l @r15+, r4 108 109 lds.l @r4+, pr 110 mov.l @r4+, r8 111 mov.l @r4+, r9 112 mov.l @r4+, r10 113 mov.l @r4+, r11 114 mov.l @r4+, r12 115 mov.l @r4+, r13 116 mov.l @r4+, r14 117 mov.l @r4+, r15 118 mov r5, r0 119 tst r0, r0 120 bf .L0 121 add #1, r0 122 .L0: 123 rts 124 nop 125 126 .align 2 127 #ifdef PIC 128 L__sigprocmask14r1: 129 .long _C_LABEL(__sigprocmask14)-L__sigprocmask14o1 130 L__sigprocmask14r2: 131 .long _C_LABEL(__sigprocmask14)-L__sigprocmask14o2 132 #else 133 L__sigprocmask14: 134 .long _C_LABEL(__sigprocmask14) 135 #endif 136
Indexes created Thu Oct 02 07:10:07 GMT 2025