projects / apple / libplatform.git / blame
| Commit | Line | Data |
|---|---|---|
| ada7c492 A |
1 | /* |
| 2 | * Copyright (c) 2007,2009 Apple Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. Please obtain a copy of the License at | |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 11 | * file. | |
| 12 | * | |
| 13 | * The Original Code and all software distributed under the License are | |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 18 | * Please see the License for the specific language governing rights and | |
| 19 | * limitations under the License. | |
| 20 | * | |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | ||
| 24 | #if defined(__x86_64__) | |
| 25 | ||
| 26 | #include <architecture/i386/asm_help.h> | |
| 27 | ||
| 28 | #define MCONTEXT_SS_RAX 16 | |
| 29 | #define MCONTEXT_SS_RBX 24 | |
| 30 | #define MCONTEXT_SS_RCX 32 | |
| 31 | #define MCONTEXT_SS_RDX 40 | |
| 32 | #define MCONTEXT_SS_RDI 48 | |
| 33 | #define MCONTEXT_SS_RSI 56 | |
| 34 | #define MCONTEXT_SS_RBP 64 | |
| 35 | #define MCONTEXT_SS_RSP 72 | |
| 36 | #define MCONTEXT_SS_R8 80 | |
| 37 | #define MCONTEXT_SS_RIP 144 | |
| 38 | #define MCONTEXT_SS_RFLAGS 152 | |
| 39 | ||
| 40 | TEXT | |
| 41 | .private_extern __setcontext | |
| 42 | LABEL(__setcontext) | |
| 43 | /* struct mcontext_t * %rdi */ | |
| 44 | #if DEBUG | |
| 45 | movq MCONTEXT_SS_RSI(%rdi), %rsi | |
| 46 | movq MCONTEXT_SS_RCX(%rdi), %rcx | |
| 47 | movq MCONTEXT_SS_R8+0(%rdi), %r8 | |
| 48 | movq MCONTEXT_SS_R8+8(%rdi), %r9 | |
| 49 | movq MCONTEXT_SS_R8+16(%rdi), %r10 | |
| 50 | movq MCONTEXT_SS_R8+24(%rdi), %r11 | |
| 51 | #endif | |
| 52 | movq MCONTEXT_SS_RBX(%rdi), %rbx | |
| 53 | movq MCONTEXT_SS_R8+32(%rdi), %r12 | |
| 54 | movq MCONTEXT_SS_R8+40(%rdi), %r13 | |
| 55 | movq MCONTEXT_SS_R8+48(%rdi), %r14 | |
| 56 | movq MCONTEXT_SS_R8+56(%rdi), %r15 | |
| 57 | ||
| 58 | movq MCONTEXT_SS_RSP(%rdi), %rsp | |
| 59 | movq MCONTEXT_SS_RBP(%rdi), %rbp | |
| 60 | ||
| 61 | xorl %eax, %eax /* force x=getcontext(); ... setcontext(); to keep x==0 */ | |
| 62 | ||
| 63 | #if DEBUG | |
| 64 | movq MCONTEXT_SS_RIP(%rdi), %rdx | |
| 65 | movq MCONTEXT_SS_RDI(%rdi), %rdi | |
| 66 | jmp *%rdx | |
| 67 | #else | |
| 68 | jmp *MCONTEXT_SS_RIP(%rdi) | |
| 69 | #endif | |
| 70 | ||
| 71 | #endif /* __x86_64__ */ |