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: sigsetjmp.S,v 1.4 1998/10/03 12:30:38 tsubai Exp $ */ 27 28#include <machine/asm.h> 29__FBSDID("$FreeBSD$"); 30 31/* 32 * C library -- sigsetjmp, siglongjmp 33 * 34 * siglongjmp(a,v) 35 * will generate a "return(v?v:1)" from the last call to 36 * sigsetjmp(a, savemask) 37 * by restoring registers from the stack. 38 * The previous signal state is restored if savemask is non-zero 39 * 40 * jmpbuf layout: 41 * +------------+ 42 * | savemask | 43 * +------------+ 44 * | sig state | 45 * | | 46 * | (4 words) | 47 * | | 48 * +------------+ 49 * | saved regs | 50 * | ... | 51 */ 52 53 54#include <sys/syscall.h> 55 56ENTRY(sigsetjmp) 57 mr %r6,%r3 58 stw %r4,0(%r3) 59 or. %r7,%r4,%r4 60 beq 1f 61 li %r3,1 /* SIG_BLOCK, but doesn't matter */ 62 /* since set == NULL */ 63 li %r4,0 /* set = NULL */ 64 mr %r5,%r6 /* &oset */ 65 addi %r5,%r5,4 66 li %r0, SYS_sigprocmask /* sigprocmask(SIG_BLOCK, NULL, &oset)*/ 67 sc /* assume no error XXX */ 681: 69 mflr %r11 70 mfcr %r12 71 mr %r10,%r1 72 mr %r9,%r2 73 74 std %r9,40 + 0*8(%r6) 75 stfd %f14,40 + 23*8(%r6) 76 std %r10,40 + 1*8(%r6) 77 stfd %f15,40 + 24*8(%r6) 78 std %r11,40 + 2*8(%r6) 79 stfd %f16,40 + 25*8(%r6) 80 std %r12,40 + 3*8(%r6) 81 stfd %f17,40 + 26*8(%r6) 82 std %r13,40 + 4*8(%r6) 83 stfd %f18,40 + 27*8(%r6) 84 std %r14,40 + 5*8(%r6) 85 stfd %f19,40 + 28*8(%r6) 86 std %r15,40 + 6*8(%r6) 87 stfd %f20,40 + 29*8(%r6) 88 std %r16,40 + 7*8(%r6) 89 stfd %f21,40 + 30*8(%r6) 90 std %r17,40 + 8*8(%r6) 91 stfd %f22,40 + 31*8(%r6) 92 std %r18,40 + 9*8(%r6) 93 stfd %f23,40 + 32*8(%r6) 94 std %r19,40 + 10*8(%r6) 95 stfd %f24,40 + 33*8(%r6) 96 std %r20,40 + 11*8(%r6) 97 stfd %f25,40 + 34*8(%r6) 98 std %r21,40 + 12*8(%r6) 99 stfd %f26,40 + 35*8(%r6) 100 std %r22,40 + 13*8(%r6) 101 stfd %f27,40 + 36*8(%r6) 102 std %r23,40 + 14*8(%r6) 103 stfd %f28,40 + 37*8(%r6) 104 std %r24,40 + 15*8(%r6) 105 stfd %f29,40 + 38*8(%r6) 106 std %r25,40 + 16*8(%r6) 107 stfd %f30,40 + 39*8(%r6) 108 std %r26,40 + 17*8(%r6) 109 stfd %f31,40 + 40*8(%r6) 110 std %r27,40 + 18*8(%r6) 111 std %r28,40 + 19*8(%r6) 112 std %r29,40 + 20*8(%r6) 113 std %r30,40 + 21*8(%r6) 114 std %r31,40 + 22*8(%r6) 115 116 li %r3,0 117 blr 118END(sigsetjmp) 119 120ENTRY(siglongjmp) 121 ld %r9,40 + 0*8(%r3) 122 lfd %f14,40 + 23*8(%r3) 123 ld %r10,40 + 1*8(%r3) 124 lfd %f15,40 + 24*8(%r3) 125 ld %r11,40 + 2*8(%r3) 126 lfd %f16,40 + 25*8(%r3) 127 ld %r12,40 + 3*8(%r3) 128 lfd %f17,40 + 26*8(%r3) 129 ld %r14,40 + 5*8(%r3) 130 lfd %f18,40 + 27*8(%r3) 131 ld %r15,40 + 6*8(%r3) 132 lfd %f19,40 + 28*8(%r3) 133 ld %r16,40 + 7*8(%r3) 134 lfd %f20,40 + 29*8(%r3) 135 ld %r17,40 + 8*8(%r3) 136 lfd %f21,40 + 30*8(%r3) 137 ld %r18,40 + 9*8(%r3) 138 lfd %f22,40 + 31*8(%r3) 139 ld %r19,40 + 10*8(%r3) 140 lfd %f23,40 + 32*8(%r3) 141 ld %r20,40 + 11*8(%r3) 142 lfd %f24,40 + 33*8(%r3) 143 ld %r21,40 + 12*8(%r3) 144 lfd %f25,40 + 34*8(%r3) 145 ld %r22,40 + 13*8(%r3) 146 lfd %f26,40 + 35*8(%r3) 147 ld %r23,40 + 14*8(%r3) 148 lfd %f27,40 + 36*8(%r3) 149 ld %r24,40 + 15*8(%r3) 150 lfd %f28,40 + 37*8(%r3) 151 ld %r25,40 + 16*8(%r3) 152 lfd %f29,40 + 38*8(%r3) 153 ld %r26,40 + 17*8(%r3) 154 lfd %f30,40 + 39*8(%r3) 155 ld %r27,40 + 18*8(%r3) 156 lfd %f31,40 + 40*8(%r3) 157 ld %r28,40 + 19*8(%r3) 158 ld %r29,40 + 20*8(%r3) 159 ld %r30,40 + 21*8(%r3) 160 ld %r31,40 + 22*8(%r3) 161 162 lwz %r7,0(%r3) 163 mr %r6,%r4 164 mtlr %r11 165 mtcr %r12 166 mr %r2,%r9 167 mr %r1,%r10 168 or. %r7,%r7,%r7 169 beq 1f 170 mr %r4,%r3 171 li %r3,3 /* SIG_SETMASK */ 172 addi %r4,%r4,4 /* &set */ 173 li %r5,0 /* oset = NULL */ 174 li %r0,SYS_sigprocmask /* sigprocmask(SIG_SET, &set, NULL) */ 175 sc /* assume no error XXX */ 1761: 177 or. %r3,%r6,%r6 178 bnelr 179 li %r3,1 180 blr 181END(siglongjmp) 182 183 .section .note.GNU-stack,"",%progbits 184