1/*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ralph Campbell. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * $FreeBSD$ 37 */ 38 39#include <machine/regnum.h> 40#include <machine/asm.h> 41 42#if 0 43#if defined(LIBC_SCCS) 44 .text 45 .asciz "$OpenBSD: _setjmp.S,v 1.6 1996/09/23 21:27:53 imp Exp $" 46#endif /* LIBC_SCCS */ 47#endif 48 49/* 50 * C library -- _setjmp, _longjmp 51 * 52 * _longjmp(a,v) 53 * will generate a "return(v)" from 54 * the last call to 55 * _setjmp(a) 56 * by restoring registers from the stack, 57 * The previous signal state is NOT restored. 58 */ 59 60LEAF(_setjmp) 61 .set noreorder 62 li v0, 0xACEDBADE # sigcontext magic number 63 sw ra, (2 * 4)(a0) # sc_pc = return address 64 sw v0, (3 * 4)(a0) # saved in sc_regs[0] 65 sw s0, ((S0 + 3) * 4)(a0) 66 sw s1, ((S1 + 3) * 4)(a0) 67 sw s2, ((S2 + 3) * 4)(a0) 68 sw s3, ((S3 + 3) * 4)(a0) 69 sw s4, ((S4 + 3) * 4)(a0) 70 sw s5, ((S5 + 3) * 4)(a0) 71 sw s6, ((S6 + 3) * 4)(a0) 72 sw s7, ((S7 + 3) * 4)(a0) 73 sw sp, ((SP + 3) * 4)(a0) 74 sw s8, ((S8 + 3) * 4)(a0) 75 cfc1 v0, $31 # too bad cant check if FP used 76 swc1 $f20, ((20 + 38) * 4)(a0) 77 swc1 $f21, ((21 + 38) * 4)(a0) 78 swc1 $f22, ((22 + 38) * 4)(a0) 79 swc1 $f23, ((23 + 38) * 4)(a0) 80 swc1 $f24, ((24 + 38) * 4)(a0) 81 swc1 $f25, ((25 + 38) * 4)(a0) 82 swc1 $f26, ((26 + 38) * 4)(a0) 83 swc1 $f27, ((27 + 38) * 4)(a0) 84 swc1 $f28, ((28 + 38) * 4)(a0) 85 swc1 $f29, ((29 + 38) * 4)(a0) 86 swc1 $f30, ((30 + 38) * 4)(a0) 87 swc1 $f31, ((31 + 38) * 4)(a0) 88 sw v0, ((32 + 38) * 4)(a0) 89 j ra 90 move v0, zero 91END(_setjmp) 92 93LEAF(_longjmp) 94#ifdef ABICALLS 95 subu sp, sp, 32 96 .cprestore 16 97#endif 98 .set noreorder 99 lw v0, (3 * 4)(a0) # get magic number 100 lw ra, (2 * 4)(a0) 101 bne v0, 0xACEDBADE, botch # jump if error 102 103 addu sp, sp, 32 # does not matter, sanity 104 lw s0, ((S0 + 3) * 4)(a0) 105 lw s1, ((S1 + 3) * 4)(a0) 106 lw s2, ((S2 + 3) * 4)(a0) 107 lw s3, ((S3 + 3) * 4)(a0) 108 lw s4, ((S4 + 3) * 4)(a0) 109 lw s5, ((S5 + 3) * 4)(a0) 110 lw s6, ((S6 + 3) * 4)(a0) 111 lw s7, ((S7 + 3) * 4)(a0) 112 lw v0, ((32 + 38) * 4)(a0) # get fpu status 113 lw sp, ((SP + 3) * 4)(a0) 114 lw s8, ((S8 + 3) * 4)(a0) 115/* Octeon does not have an FPU */ 116#if !defined(_MIPS_ARCH_OCTEON) 117 ctc1 v0, $31 118 lwc1 $f20, ((20 + 38) * 4)(a0) 119 lwc1 $f21, ((21 + 38) * 4)(a0) 120 lwc1 $f22, ((22 + 38) * 4)(a0) 121 lwc1 $f23, ((23 + 38) * 4)(a0) 122 lwc1 $f24, ((24 + 38) * 4)(a0) 123 lwc1 $f25, ((25 + 38) * 4)(a0) 124 lwc1 $f26, ((26 + 38) * 4)(a0) 125 lwc1 $f27, ((27 + 38) * 4)(a0) 126 lwc1 $f28, ((28 + 38) * 4)(a0) 127 lwc1 $f29, ((29 + 38) * 4)(a0) 128 lwc1 $f30, ((30 + 38) * 4)(a0) 129 lwc1 $f31, ((31 + 38) * 4)(a0) 130#endif /* _MIPS_ARCH_OCTEON */ 131 132 j ra 133 move v0, a1 134botch: 135 jal _C_LABEL(longjmperror) 136 nop 137 jal _C_LABEL(abort) 138 nop 139END(_longjmp) 140