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