setjmp.S revision 1.5
1 /* $NetBSD: setjmp.S,v 1.5 2003/07/01 14:35:44 marcus 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90 39 */ 40 41 #include <machine/asm.h> 42 #if defined(LIBC_SCCS) 43 RCSID("$NetBSD: setjmp.S,v 1.5 2003/07/01 14:35:44 marcus Exp $") 44 #endif 45 46 /* 47 * C library -- _setjmp, _longjmp 48 * 49 * longjmp(a,v) 50 * will generate a "return(v)" from the last call to 51 * setjmp(a) 52 * by restoring registers from the stack. 53 * The previous signal state is restored. 54 */ 55 56 ENTRY(setjmp) 57 sts.l pr, @-r15 58 mov.l r4, @-r15 59 mov #0, r4 60 mov.l Lsigblock, r0 61 #ifdef PIC 62 bsrf r0 63 nop 64 1: 65 #else 66 jsr @r0 67 nop 68 #endif 69 mov.l @r15+, r4 70 lds.l @r15+, pr 71 72 add #4*11, r4 73 mov.l r0, @-r4 /* sigmask */ 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 .align 2 89 Lsigblock: 90 #ifdef PIC 91 .long _C_LABEL(sigblock)-1b 92 #else 93 .long _C_LABEL(sigblock) 94 #endif 95 96 ENTRY(longjmp) 97 mov.l r4, @-r15 98 mov.l r5, @-r15 99 mov r4, r0 100 add #4*10, r0 101 mov.l @r0, r4 102 mov.l Lsigsetmask, r0 103 #ifdef PIC 104 bsrf r0 105 nop 106 1: 107 #else 108 jsr @r0 109 nop 110 #endif 111 mov.l @r15+, r5 112 mov.l @r15+, r4 113 114 lds.l @r4+, pr 115 mov.l @r4+, r8 116 mov.l @r4+, r9 117 mov.l @r4+, r10 118 mov.l @r4+, r11 119 mov.l @r4+, r12 120 mov.l @r4+, r13 121 mov.l @r4+, r14 122 mov.l @r4+, r15 123 mov r5, r0 124 tst r0, r0 125 bf .L0 126 add #1, r0 127 .L0: 128 rts 129 nop 130 131 .align 2 132 Lsigsetmask: 133 #ifdef PIC 134 .long _C_LABEL(sigsetmask)-1b 135 #else 136 .long _C_LABEL(sigsetmask) 137 #endif 138
Indexes created Sun Sep 28 07:09:56 GMT 2025