1/*- 2 * Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * Portions of this software were developed by SRI International and the 6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract 7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Portions of this software were developed by the University of Cambridge 10 * Computer Laboratory as part of the CTSRD Project, with support from the 11 * UK Higher Education Innovation Fund (HEIF). 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 35#include <machine/asm.h> 36__FBSDID("$FreeBSD$"); 37 38#include <machine/setjmp.h> 39 40ENTRY(_setjmp) 41 /* Store the magic value and stack pointer */ 42 ld t0, .Lmagic 43 sd t0, (0 * 8)(a0) 44 sd sp, (1 * 8)(a0) 45 addi a0, a0, (2 * 8) 46 47 /* Store the general purpose registers and ra */ 48 sd s0, (0 * 8)(a0) 49 sd s1, (1 * 8)(a0) 50 sd s2, (2 * 8)(a0) 51 sd s3, (3 * 8)(a0) 52 sd s4, (4 * 8)(a0) 53 sd s5, (5 * 8)(a0) 54 sd s6, (6 * 8)(a0) 55 sd s7, (7 * 8)(a0) 56 sd s8, (8 * 8)(a0) 57 sd s9, (9 * 8)(a0) 58 sd s10, (10 * 8)(a0) 59 sd s11, (11 * 8)(a0) 60 sd ra, (12 * 8)(a0) 61 addi a0, a0, (13 * 8) 62 63#if !defined(_STANDALONE) && defined(__riscv_float_abi_double) 64 /* Store the fpe registers */ 65 fsd fs0, (0 * 8)(a0) 66 fsd fs1, (1 * 8)(a0) 67 fsd fs2, (2 * 8)(a0) 68 fsd fs3, (3 * 8)(a0) 69 fsd fs4, (4 * 8)(a0) 70 fsd fs5, (5 * 8)(a0) 71 fsd fs6, (6 * 8)(a0) 72 fsd fs7, (7 * 8)(a0) 73 fsd fs8, (8 * 8)(a0) 74 fsd fs9, (9 * 8)(a0) 75 fsd fs10, (10 * 8)(a0) 76 fsd fs11, (11 * 8)(a0) 77 addi a0, a0, (12 * 8) 78#endif 79 80 /* Return value */ 81 li a0, 0 82 ret 83 .align 3 84.Lmagic: 85 .quad _JB_MAGIC__SETJMP 86END(_setjmp) 87 88ENTRY(_longjmp) 89 /* Check the magic value */ 90 ld t0, 0(a0) 91 ld t1, .Lmagic 92 bne t0, t1, botch 93 94 /* Restore the stack pointer */ 95 ld t0, 8(a0) 96 mv sp, t0 97 addi a0, a0, (2 * 8) 98 99 /* Restore the general purpose registers and ra */ 100 ld s0, (0 * 8)(a0) 101 ld s1, (1 * 8)(a0) 102 ld s2, (2 * 8)(a0) 103 ld s3, (3 * 8)(a0) 104 ld s4, (4 * 8)(a0) 105 ld s5, (5 * 8)(a0) 106 ld s6, (6 * 8)(a0) 107 ld s7, (7 * 8)(a0) 108 ld s8, (8 * 8)(a0) 109 ld s9, (9 * 8)(a0) 110 ld s10, (10 * 8)(a0) 111 ld s11, (11 * 8)(a0) 112 ld ra, (12 * 8)(a0) 113 addi a0, a0, (13 * 8) 114 115#if !defined(_STANDALONE) && defined(__riscv_float_abi_double) 116 /* Restore the fpe registers */ 117 fld fs0, (0 * 8)(a0) 118 fld fs1, (1 * 8)(a0) 119 fld fs2, (2 * 8)(a0) 120 fld fs3, (3 * 8)(a0) 121 fld fs4, (4 * 8)(a0) 122 fld fs5, (5 * 8)(a0) 123 fld fs6, (6 * 8)(a0) 124 fld fs7, (7 * 8)(a0) 125 fld fs8, (8 * 8)(a0) 126 fld fs9, (9 * 8)(a0) 127 fld fs10, (10 * 8)(a0) 128 fld fs11, (11 * 8)(a0) 129 addi a0, a0, (12 * 8) 130#endif 131 132 /* Load the return value */ 133 mv a0, a1 134 bnez a1, 1f 135 li a0, 1 1361: 137 ret 138 139botch: 140#ifdef _STANDALONE 141 j botch 142#else 143 call _C_LABEL(longjmperror) 144 call _C_LABEL(abort) 145#endif 146END(_longjmp) 147