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 https://opensource.org/licenses/CDDL-1.0. 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#if defined(_KERNEL) && defined(__linux__) 27#include <linux/linkage.h> 28#endif 29 30#ifndef RET 31#define RET ret 32#endif 33 34#undef ENTRY 35#define ENTRY(x) \ 36 .text; \ 37 .align 8; \ 38 .globl x; \ 39 .type x, @function; \ 40x: 41 42#define SET_SIZE(x) \ 43 .size x, [.-x] 44 45/* 46 * Setjmp and longjmp implement non-local gotos using state vectors 47 * type label_t. 48 */ 49#ifdef __x86_64__ 50 51 ENTRY(setjmp) 52 movq %rsp, 0(%rdi) 53 movq %rbp, 8(%rdi) 54 movq %rbx, 16(%rdi) 55 movq %r12, 24(%rdi) 56 movq %r13, 32(%rdi) 57 movq %r14, 40(%rdi) 58 movq %r15, 48(%rdi) 59 movq 0(%rsp), %rdx /* return address */ 60 movq %rdx, 56(%rdi) /* rip */ 61 xorl %eax, %eax /* return 0 */ 62 RET 63 SET_SIZE(setjmp) 64 65 ENTRY(longjmp) 66 movq 0(%rdi), %rsp 67 movq 8(%rdi), %rbp 68 movq 16(%rdi), %rbx 69 movq 24(%rdi), %r12 70 movq 32(%rdi), %r13 71 movq 40(%rdi), %r14 72 movq 48(%rdi), %r15 73 movq 56(%rdi), %rdx /* return address */ 74 movq %rdx, 0(%rsp) 75 xorl %eax, %eax 76 incl %eax /* return 1 */ 77 RET 78 SET_SIZE(longjmp) 79 80#ifdef __ELF__ 81.section .note.GNU-stack,"",%progbits 82#endif 83 84#endif /* __x86_64__ */ 85