1/*- 2 * Copyright (c) 2002 Peter Grehan. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26/* $NetBSD: _setjmp.S,v 1.1 1997/03/29 20:55:53 thorpej Exp $ */ 27 28#include <machine/asm.h> 29__FBSDID("$FreeBSD$"); 30 31/* 32 * C library -- _setjmp, _longjmp 33 * 34 * _longjmp(a,v) 35 * will generate a "return(v?v:1)" from the last call to 36 * _setjmp(a) 37 * by restoring registers from the stack. 38 * The previous signal state is NOT restored. 39 * 40 * jmpbuf layout: 41 * +------------+ 42 * | unused | 43 * +------------+ 44 * | unused | 45 * | | 46 * | (4 words) | 47 * | | 48 * +------------+ 49 * | saved regs | 50 * | ... | 51 */ 52 53ENTRY(_setjmp) 54 mflr %r11 55 mfcr %r12 56 mr %r10,%r1 57 mr %r9,%r2 58 stmw %r9,20(%r3) 59 60 /* FPRs */ 61 stfd %f14,112+0*8(%r3) 62 stfd %f15,112+1*8(%r3) 63 stfd %f16,112+2*8(%r3) 64 stfd %f17,112+3*8(%r3) 65 stfd %f18,112+4*8(%r3) 66 stfd %f19,112+5*8(%r3) 67 stfd %f20,112+6*8(%r3) 68 stfd %f21,112+7*8(%r3) 69 stfd %f22,112+8*8(%r3) 70 stfd %f23,112+9*8(%r3) 71 stfd %f24,112+10*8(%r3) 72 stfd %f25,112+11*8(%r3) 73 stfd %f26,112+12*8(%r3) 74 stfd %f27,112+13*8(%r3) 75 stfd %f28,112+14*8(%r3) 76 stfd %f29,112+15*8(%r3) 77 stfd %f30,112+16*8(%r3) 78 stfd %f31,112+17*8(%r3) 79 80 li %r3,0 81 blr 82END(_setjmp) 83 84ENTRY(_longjmp) 85 lmw %r9,20(%r3) 86 87 /* FPRs */ 88 lfd %f14,112+0*8(%r3) 89 lfd %f15,112+1*8(%r3) 90 lfd %f16,112+2*8(%r3) 91 lfd %f17,112+3*8(%r3) 92 lfd %f18,112+4*8(%r3) 93 lfd %f19,112+5*8(%r3) 94 lfd %f20,112+6*8(%r3) 95 lfd %f21,112+7*8(%r3) 96 lfd %f22,112+8*8(%r3) 97 lfd %f23,112+9*8(%r3) 98 lfd %f24,112+10*8(%r3) 99 lfd %f25,112+11*8(%r3) 100 lfd %f26,112+12*8(%r3) 101 lfd %f27,112+13*8(%r3) 102 lfd %f28,112+14*8(%r3) 103 lfd %f29,112+15*8(%r3) 104 lfd %f30,112+16*8(%r3) 105 lfd %f31,112+17*8(%r3) 106 107 mtlr %r11 108 mtcr %r12 109 mr %r1,%r10 110 or. %r3,%r4,%r4 111 bnelr 112 li %r3,1 113 blr 114END(_longjmp) 115 116 .section .note.GNU-stack,"",%progbits 117