projects / apple / boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 14c7c974 A |
1 | /* |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 4f6e3300 A |
6 | * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights |
| 7 | * Reserved. This file contains Original Code and/or Modifications of | |
| 8 | * Original Code as defined in and that are subject to the Apple Public | |
| 9 | * Source License Version 1.1 (the "License"). You may not use this file | |
| 10 | * except in compliance with the License. Please obtain a copy of the | |
| 11 | * License at http://www.apple.com/publicsource and read it before using | |
| 12 | * this file. | |
| 14c7c974 A |
13 | * |
| 14 | * The Original Code and all software distributed under the License are | |
| 4f6e3300 | 15 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| 14c7c974 A |
16 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 17 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 4f6e3300 A |
18 | * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the |
| 19 | * License for the specific language governing rights and limitations | |
| 20 | * under the License. | |
| 14c7c974 A |
21 | * |
| 22 | * @APPLE_LICENSE_HEADER_END@ | |
| 23 | */ | |
| 24 | ||
| 25 | #include <architecture/i386/asm_help.h> | |
| 26 | ||
| 27 | #define O_EDI 0 | |
| 28 | #define O_ESI 4 | |
| 29 | #define O_EBX 8 | |
| 30 | #define O_EBP 12 | |
| 31 | #define O_ESP 16 | |
| 32 | #define O_EIP 20 | |
| 33 | ||
| 34 | LEAF(_setjmp, 0) | |
| 35 | X_LEAF(_set_label, _setjmp) | |
| 36 | movl 4(%esp), %edx // address of save area | |
| 37 | movl %edi, O_EDI(%edx) | |
| 38 | movl %esi, O_ESI(%edx) | |
| 39 | movl %ebx, O_EBX(%edx) | |
| 40 | movl %ebp, O_EBP(%edx) | |
| 41 | movl %esp, O_ESP(%edx) | |
| 42 | movl (%esp), %ecx // %eip (return address) | |
| 43 | movl %ecx, O_EIP(%edx) | |
| 44 | subl %eax, %eax // retval <- 0 | |
| 45 | ret | |
| 46 | ||
| 47 | LEAF(_longjmp, 0) | |
| 48 | X_LEAF(_jump_label, _longjmp) | |
| 49 | movl 4(%esp), %edx // address of save area | |
| 50 | movl O_EDI(%edx), %edi | |
| 51 | movl O_ESI(%edx), %esi | |
| 52 | movl O_EBX(%edx), %ebx | |
| 53 | movl O_EBP(%edx), %ebp | |
| 54 | movl O_ESP(%edx), %esp | |
| 55 | movl O_EIP(%edx), %eax // %eip (return address) | |
| 56 | movl %eax, 0(%esp) | |
| 57 | popl %eax // ret addr != 0 | |
| 58 | jmp *%eax // indirect |