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#define ENTRY(sym) \ 36 .text; .globl sym; .type sym,@function; sym: 37#define END(sym) .size sym, . - sym 38 39 40ENTRY(setjmp) 41 /* Store the stack pointer */ 42 sd sp, (0 * 8)(a0) 43 addi a0, a0, (1 * 8) 44 45 /* Store the general purpose registers and ra */ 46 sd s0, (0 * 8)(a0) 47 sd s1, (1 * 8)(a0) 48 sd s2, (2 * 8)(a0) 49 sd s3, (3 * 8)(a0) 50 sd s4, (4 * 8)(a0) 51 sd s5, (5 * 8)(a0) 52 sd s6, (6 * 8)(a0) 53 sd s7, (7 * 8)(a0) 54 sd s8, (8 * 8)(a0) 55 sd s9, (9 * 8)(a0) 56 sd s10, (10 * 8)(a0) 57 sd s11, (11 * 8)(a0) 58 sd ra, (12 * 8)(a0) 59 addi a0, a0, (13 * 8) 60 61 /* Return value */ 62 li a0, 0 63 ret 64END(setjmp) 65 66ENTRY(longjmp) 67 /* Restore the stack pointer */ 68 ld t0, 0(a0) 69 mv sp, t0 70 addi a0, a0, (1 * 8) 71 72 /* Restore the general purpose registers and ra */ 73 ld s0, (0 * 8)(a0) 74 ld s1, (1 * 8)(a0) 75 ld s2, (2 * 8)(a0) 76 ld s3, (3 * 8)(a0) 77 ld s4, (4 * 8)(a0) 78 ld s5, (5 * 8)(a0) 79 ld s6, (6 * 8)(a0) 80 ld s7, (7 * 8)(a0) 81 ld s8, (8 * 8)(a0) 82 ld s9, (9 * 8)(a0) 83 ld s10, (10 * 8)(a0) 84 ld s11, (11 * 8)(a0) 85 ld ra, (12 * 8)(a0) 86 addi a0, a0, (13 * 8) 87 88 /* Load the return value */ 89 mv a0, a1 90 ret 91END(longjmp) 92