1*61145dc2SMartin Matuska// SPDX-License-Identifier: CDDL-1.0 2eda14cbcSMatt Macy/* 3eda14cbcSMatt Macy * CDDL HEADER START 4eda14cbcSMatt Macy * 5eda14cbcSMatt Macy * The contents of this file are subject to the terms of the 6eda14cbcSMatt Macy * Common Development and Distribution License (the "License"). 7eda14cbcSMatt Macy * You may not use this file except in compliance with the License. 8eda14cbcSMatt Macy * 9eda14cbcSMatt Macy * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10271171e0SMartin Matuska * or https://opensource.org/licenses/CDDL-1.0. 11eda14cbcSMatt Macy * See the License for the specific language governing permissions 12eda14cbcSMatt Macy * and limitations under the License. 13eda14cbcSMatt Macy * 14eda14cbcSMatt Macy * When distributing Covered Code, include this CDDL HEADER in each 15eda14cbcSMatt Macy * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16eda14cbcSMatt Macy * If applicable, add the following below this CDDL HEADER, with the 17eda14cbcSMatt Macy * fields enclosed by brackets "[]" replaced with your own identifying 18eda14cbcSMatt Macy * information: Portions Copyright [yyyy] [name of copyright owner] 19eda14cbcSMatt Macy * 20eda14cbcSMatt Macy * CDDL HEADER END 21eda14cbcSMatt Macy */ 22eda14cbcSMatt Macy 23eda14cbcSMatt Macy/* 24eda14cbcSMatt Macy * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. 25eda14cbcSMatt Macy */ 26eda14cbcSMatt Macy 27eda14cbcSMatt Macy#define ENTRY(x) \ 28eda14cbcSMatt Macy .text; \ 2915f0b8c3SMartin Matuska .balign 8; \ 30eda14cbcSMatt Macy .globl x; \ 31eda14cbcSMatt Macy .type x, @function; \ 32eda14cbcSMatt Macyx: 33eda14cbcSMatt Macy 34eda14cbcSMatt Macy#define SET_SIZE(x) \ 35eda14cbcSMatt Macy .size x, [.-x] 36eda14cbcSMatt Macy 37eda14cbcSMatt Macy/* 38eda14cbcSMatt Macy * Setjmp and longjmp implement non-local gotos using state vectors 39eda14cbcSMatt Macy * type label_t. 40eda14cbcSMatt Macy */ 41eda14cbcSMatt Macy#ifdef __i386__ 42eda14cbcSMatt Macy 43eda14cbcSMatt Macy ENTRY(setjmp) /* save area is passed in eax */ 44eda14cbcSMatt Macy movl %ebp, 0(%eax) /* save ebp */ 45eda14cbcSMatt Macy movl %ebx, 4(%eax) /* save ebx */ 46eda14cbcSMatt Macy movl %esi, 8(%eax) /* save esi */ 47eda14cbcSMatt Macy movl %edi, 12(%eax) /* save edi */ 48eda14cbcSMatt Macy movl %esp, 16(%eax) /* save esp */ 49eda14cbcSMatt Macy movl (%esp), %ecx /* %eip (return address) */ 50eda14cbcSMatt Macy movl %ecx, 20(%eax) /* save eip */ 51eda14cbcSMatt Macy subl %eax, %eax /* return 0 */ 52eda14cbcSMatt Macy ret 53eda14cbcSMatt Macy SET_SIZE(setjmp) 54eda14cbcSMatt Macy 55eda14cbcSMatt Macy ENTRY(longjmp) /* save area is passed in eax */ 56eda14cbcSMatt Macy movl 0(%eax), %ebp /* restore ebp */ 57eda14cbcSMatt Macy movl 4(%eax), %ebx /* restore ebx */ 58eda14cbcSMatt Macy movl 8(%eax), %esi /* restore esi */ 59eda14cbcSMatt Macy movl 12(%eax), %edi /* restore edi */ 60eda14cbcSMatt Macy movl 16(%eax), %esp /* restore esp */ 61eda14cbcSMatt Macy movl 20(%eax), %ecx /* %eip (return address) */ 62eda14cbcSMatt Macy addl $4, %esp /* pop ret adr */ 63eda14cbcSMatt Macy jmp *%ecx /* indirect jump */ 64eda14cbcSMatt Macy SET_SIZE(longjmp) 65eda14cbcSMatt Macy 66eda14cbcSMatt Macy#ifdef __ELF__ 67eda14cbcSMatt Macy.section .note.GNU-stack,"",%progbits 68eda14cbcSMatt Macy#endif 69eda14cbcSMatt Macy 70eda14cbcSMatt Macy#endif /* __i386__ */ 71