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 addi sp, sp, -(2 * 8) 42 sd a0, 0(sp) 43 sd ra, 8(sp) 44 45 /* Store the signal mask */ 46 addi a2, a0, (_JB_SIGMASK * 8) /* oset */ 47 li a1, 0 /* set */ 48 li a0, 1 /* SIG_BLOCK */ 49 jal sigprocmask 50 51 ld a0, 0(sp) 52 ld ra, 8(sp) 53 addi sp, sp, (2 * 8) 54 55 /* Store the magic value and stack pointer */ 56 la t0, .Lmagic 57 ld t0, 0(t0) 58 sd t0, (0 * 8)(a0) 59 sd sp, (1 * 8)(a0) 60 addi a0, a0, (2 * 8) 61 62 /* Store the general purpose registers and ra */ 63 sd s0, (0 * 8)(a0) 64 sd s1, (1 * 8)(a0) 65 sd s2, (2 * 8)(a0) 66 sd s3, (3 * 8)(a0) 67 sd s4, (4 * 8)(a0) 68 sd s5, (5 * 8)(a0) 69 sd s6, (6 * 8)(a0) 70 sd s7, (7 * 8)(a0) 71 sd s8, (8 * 8)(a0) 72 sd s9, (9 * 8)(a0) 73 sd s10, (10 * 8)(a0) 74 sd s11, (11 * 8)(a0) 75 sd ra, (12 * 8)(a0) 76 addi a0, a0, (13 * 8) 77 78#ifdef __riscv_float_abi_double 79 /* Store the fpe registers */ 80 fsd fs0, (0 * 16)(a0) 81 fsd fs1, (1 * 16)(a0) 82 fsd fs2, (2 * 16)(a0) 83 fsd fs3, (3 * 16)(a0) 84 fsd fs4, (4 * 16)(a0) 85 fsd fs5, (5 * 16)(a0) 86 fsd fs6, (6 * 16)(a0) 87 fsd fs7, (7 * 16)(a0) 88 fsd fs8, (8 * 16)(a0) 89 fsd fs9, (9 * 16)(a0) 90 fsd fs10, (10 * 16)(a0) 91 fsd fs11, (11 * 16)(a0) 92 addi a0, a0, (12 * 16) 93#endif 94 95 /* Return value */ 96 li a0, 0 97 ret 98 .align 3 99.Lmagic: 100 .quad _JB_MAGIC_SETJMP 101END(setjmp) 102 103ENTRY(longjmp) 104 addi sp, sp, -(4 * 8) 105 sd a0, (0 * 8)(sp) 106 sd ra, (1 * 8)(sp) 107 sd a1, (2 * 8)(sp) 108 109 /* Restore the signal mask */ 110 li a2, 0 /* oset */ 111 addi a1, a0, (_JB_SIGMASK * 8) /* set */ 112 li a0, 3 /* SIG_BLOCK */ 113 jal sigprocmask 114 115 ld a1, (2 * 8)(sp) 116 ld ra, (1 * 8)(sp) 117 ld a0, (0 * 8)(sp) 118 addi sp, sp, (4 * 8) 119 120 /* Check the magic value */ 121 ld t0, 0(a0) 122 la t1, .Lmagic 123 ld t1, 0(t1) 124 bne t0, t1, botch 125 126 /* Restore the stack pointer */ 127 ld t0, 8(a0) 128 mv sp, t0 129 addi a0, a0, (2 * 8) 130 131 /* Restore the general purpose registers and ra */ 132 ld s0, (0 * 8)(a0) 133 ld s1, (1 * 8)(a0) 134 ld s2, (2 * 8)(a0) 135 ld s3, (3 * 8)(a0) 136 ld s4, (4 * 8)(a0) 137 ld s5, (5 * 8)(a0) 138 ld s6, (6 * 8)(a0) 139 ld s7, (7 * 8)(a0) 140 ld s8, (8 * 8)(a0) 141 ld s9, (9 * 8)(a0) 142 ld s10, (10 * 8)(a0) 143 ld s11, (11 * 8)(a0) 144 ld ra, (12 * 8)(a0) 145 addi a0, a0, (13 * 8) 146 147#ifdef __riscv_float_abi_double 148 /* Restore the fpe registers */ 149 fld fs0, (0 * 16)(a0) 150 fld fs1, (1 * 16)(a0) 151 fld fs2, (2 * 16)(a0) 152 fld fs3, (3 * 16)(a0) 153 fld fs4, (4 * 16)(a0) 154 fld fs5, (5 * 16)(a0) 155 fld fs6, (6 * 16)(a0) 156 fld fs7, (7 * 16)(a0) 157 fld fs8, (8 * 16)(a0) 158 fld fs9, (9 * 16)(a0) 159 fld fs10, (10 * 16)(a0) 160 fld fs11, (11 * 16)(a0) 161 addi a0, a0, (12 * 16) 162#endif 163 164 /* Load the return value */ 165 mv a0, a1 166 ret 167 168botch: 169 call _C_LABEL(longjmperror) 170 call _C_LABEL(abort) 171END(longjmp) 172