1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 27#define ENTRY(x) \ 28 .text; \ 29 .align 8; \ 30 .globl x; \ 31 .type x, @function; \ 32x: 33 34#define SET_SIZE(x) \ 35 .size x, [.-x] 36 37 38/* 39 * Setjmp and longjmp implement non-local gotos using state vectors 40 * type label_t. 41 */ 42#ifdef __x86_64__ 43 44 ENTRY(setjmp) 45 movq %rsp, 0(%rdi) 46 movq %rbp, 8(%rdi) 47 movq %rbx, 16(%rdi) 48 movq %r12, 24(%rdi) 49 movq %r13, 32(%rdi) 50 movq %r14, 40(%rdi) 51 movq %r15, 48(%rdi) 52 movq 0(%rsp), %rdx /* return address */ 53 movq %rdx, 56(%rdi) /* rip */ 54 xorl %eax, %eax /* return 0 */ 55 ret 56 SET_SIZE(setjmp) 57 58 ENTRY(longjmp) 59 movq 0(%rdi), %rsp 60 movq 8(%rdi), %rbp 61 movq 16(%rdi), %rbx 62 movq 24(%rdi), %r12 63 movq 32(%rdi), %r13 64 movq 40(%rdi), %r14 65 movq 48(%rdi), %r15 66 movq 56(%rdi), %rdx /* return address */ 67 movq %rdx, 0(%rsp) 68 xorl %eax, %eax 69 incl %eax /* return 1 */ 70 ret 71 SET_SIZE(longjmp) 72 73#ifdef __ELF__ 74.section .note.GNU-stack,"",%progbits 75#endif 76 77#endif /* __x86_64__ */ 78