1// SPDX-License-Identifier: BSD-2-Clause 2/*- 3 * Copyright (c) 2014 Andrew Turner 4 * Copyright (c) 2014-2015 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Andrew Turner 8 * under sponsorship from the FreeBSD Foundation 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33 34#ifdef __aarch64__ 35 36#define ENTRY(sym) \ 37 .text; \ 38 .globl sym; \ 39 .balign 2; \ 40 .type sym,#function; \ 41sym: 42 43#define END(sym) \ 44 .size sym, . - sym 45 46 47ENTRY(setjmp) 48 /* Store the stack pointer */ 49 mov x8, sp 50 str x8, [x0], #8 51 52 /* Store the general purpose registers and lr */ 53 stp x19, x20, [x0], #16 54 stp x21, x22, [x0], #16 55 stp x23, x24, [x0], #16 56 stp x25, x26, [x0], #16 57 stp x27, x28, [x0], #16 58 stp x29, x30, [x0], #16 59 60 /* Return value */ 61 mov x0, #0 62 ret 63END(setjmp) 64 65ENTRY(longjmp) 66 /* Restore the stack pointer */ 67 ldr x8, [x0], #8 68 mov sp, x8 69 70 /* Restore the general purpose registers and lr */ 71 ldp x19, x20, [x0], #16 72 ldp x21, x22, [x0], #16 73 ldp x23, x24, [x0], #16 74 ldp x25, x26, [x0], #16 75 ldp x27, x28, [x0], #16 76 ldp x29, x30, [x0], #16 77 78 /* Load the return value */ 79 mov x0, x1 80 ret 81END(longjmp) 82 83#ifdef __ELF__ 84.section .note.GNU-stack,"",%progbits 85#endif 86 87#endif /* __aarch64__ */ 88