| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License (the "License"). |
| * You may not use this file except in compliance with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| |
| /* |
| * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. |
| */ |
| |
| #define ENTRY(x) \ |
| .text; \ |
| .align 8; \ |
| .globl x; \ |
| .type x, @function; \ |
| x: |
| |
| #define SET_SIZE(x) \ |
| .size x, [.-x] |
| |
| /* |
| * Setjmp and longjmp implement non-local gotos using state vectors |
| * type label_t. |
| */ |
| #ifdef __i386__ |
| |
| ENTRY(setjmp) /* save area is passed in eax */ |
| movl %ebp, 0(%eax) /* save ebp */ |
| movl %ebx, 4(%eax) /* save ebx */ |
| movl %esi, 8(%eax) /* save esi */ |
| movl %edi, 12(%eax) /* save edi */ |
| movl %esp, 16(%eax) /* save esp */ |
| movl (%esp), %ecx /* %eip (return address) */ |
| movl %ecx, 20(%eax) /* save eip */ |
| subl %eax, %eax /* return 0 */ |
| ret |
| SET_SIZE(setjmp) |
| |
| ENTRY(longjmp) /* save area is passed in eax */ |
| movl 0(%eax), %ebp /* restore ebp */ |
| movl 4(%eax), %ebx /* restore ebx */ |
| movl 8(%eax), %esi /* restore esi */ |
| movl 12(%eax), %edi /* restore edi */ |
| movl 16(%eax), %esp /* restore esp */ |
| movl 20(%eax), %ecx /* %eip (return address) */ |
| addl $4, %esp /* pop ret adr */ |
| jmp *%ecx /* indirect jump */ |
| SET_SIZE(longjmp) |
| |
| #ifdef __ELF__ |
| .section .note.GNU-stack,"",%progbits |
| #endif |
| |
| #endif /* __i386__ */ |