| | 1 | /* |
| | 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 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. |
| | 13 | * |
| | 14 | * The Original Code and all software distributed under the License are |
| | 15 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 16 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 17 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 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. |
| | 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 |
projects / apple / boot.git / blame_incremental