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@ | |
| 442fbc9d | 5 | * |
| ada7c492 A |
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. | |
| 442fbc9d | 12 | * |
| ada7c492 A |
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. | |
| 442fbc9d | 20 | * |
| ada7c492 A |
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 | LABEL(_getcontext) | |
| 42 | /* struct ucontext_t * $rdi */ | |
| 43 | push %rbp | |
| 44 | movq %rsp, %rbp | |
| 45 | movq %rsp, %rsi | |
| 46 | CALL_EXTERN(_getmcontext) /* getmcontext(uctx, sp) */ | |
| 47 | pop %rbp | |
| 48 | ||
| 49 | #if DEBUG | |
| 50 | movq $0, MCONTEXT_SS_RAX(%rax) | |
| 51 | movq $0, MCONTEXT_SS_RDX(%rax) | |
| 52 | movq $0, MCONTEXT_SS_RCX(%rax) | |
| 53 | movq $0, MCONTEXT_SS_RDI(%rax) | |
| 54 | movq $0, MCONTEXT_SS_RSI(%rax) | |
| 55 | movq $0, MCONTEXT_SS_R8(%rax) | |
| 56 | movq $0, MCONTEXT_SS_R8+8(%rax) | |
| 57 | movq $0, MCONTEXT_SS_R8+16(%rax) | |
| 58 | movq $0, MCONTEXT_SS_R8+24(%rax) | |
| 59 | movq $0, MCONTEXT_SS_RFLAGS(%rax) | |
| 60 | #endif | |
| 61 | ||
| 62 | movq %rbp, MCONTEXT_SS_RBP(%rax) | |
| 63 | movq %rbx, MCONTEXT_SS_RBX(%rax) | |
| 64 | movq %r12, MCONTEXT_SS_R8+32(%rax) | |
| 65 | movq %r13, MCONTEXT_SS_R8+40(%rax) | |
| 66 | movq %r14, MCONTEXT_SS_R8+48(%rax) | |
| 67 | movq %r15, MCONTEXT_SS_R8+56(%rax) | |
| 68 | movq (%rsp), %rcx /* return address */ | |
| 69 | movq %rcx, MCONTEXT_SS_RIP(%rax) | |
| 70 | leaq 8(%rsp), %rcx | |
| 71 | movq %rcx, MCONTEXT_SS_RSP(%rax) | |
| 72 | xorl %eax, %eax | |
| 73 | ret | |
| 74 | ||
| 75 | #endif /* __x86_64__ */ |