_setjmp.S revision 1.7
1 /* $NetBSD: _setjmp.S,v 1.7 2006/01/05 02:04:41 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 #include <machine/setjmp.h> 39 40 #if defined(LIBC_SCCS) 41 RCSID("$NetBSD: _setjmp.S,v 1.7 2006/01/05 02:04:41 uwe Exp $") 42 #endif 43 44 /* 45 * C library -- _setjmp, _longjmp 46 * 47 * _longjmp(a,v) 48 * will generate a "return(v)" from the last call to 49 * _setjmp(a) 50 * by restoring registers from the stack. 51 * The previous signal state is NOT restored. 52 */ 53 54 ENTRY(_setjmp) 55 add #((_JB_HAS_MASK + 1) * 4), r4 56 mov #0, r0 57 mov.l r0, @-r4 /* no saved signal mask */ 58 mov.l r15, @-r4 59 mov.l r14, @-r4 60 mov.l r13, @-r4 61 mov.l r12, @-r4 62 mov.l r11, @-r4 63 mov.l r10, @-r4 64 mov.l r9, @-r4 65 mov.l r8, @-r4 66 sts.l pr, @-r4 67 rts 68 xor r0, r0 69 SET_ENTRY_SIZE(_setjmp) 70 71 ENTRY(_longjmp) 72 lds.l @r4+, pr 73 mov.l @r4+, r8 74 mov.l @r4+, r9 75 mov.l @r4+, r10 76 mov.l @r4+, r11 77 mov.l @r4+, r12 78 mov.l @r4+, r13 79 mov.l @r4+, r14 80 mov.l @r4+, r15 81 82 mov r5, r0 83 tst r0, r0 84 bf .L0 85 add #1, r0 86 .L0: 87 rts 88 nop 89 SET_ENTRY_SIZE(_longjmp) 90
Indexes created Sat Sep 27 22:09:54 GMT 2025