projects / apple / libplatform.git / blame
| Commit | Line | Data |
|---|---|---|
| ada7c492 A |
1 | /* |
| 2 | * Copyright (c) 1999 Apple Computer, 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 | * Copyright (c) 1998-2008 Apple Inc. All rights reserved. | |
| 25 | * | |
| 26 | * File: sys/arm/longjmp.s | |
| 27 | * | |
| 28 | * Implements siglongjmp(), longjmp(), _longjmp() | |
| 29 | * | |
| 30 | */ | |
| 31 | ||
| 32 | #include <architecture/arm/asm_help.h> | |
| 33 | #include "_setjmp.h" | |
| 34 | ||
| 35 | /* | |
| 36 | * longjmp routines | |
| 37 | */ | |
| 38 | ||
| 39 | /* void siglongjmp(sigjmp_buf env, int val); */ | |
| 40 | ||
| 41 | ENTRY_POINT(_siglongjmp) | |
| 42 | ldr r2, [ r0, #JMP_SIGFLAG ] // load sigflag | |
| 43 | cmp r2, #0 // test if zero | |
| 44 | beq L__exit // if zero do _longjmp() | |
| 45 | // else *** fall through *** to longjmp() | |
| 46 | ||
| 47 | /* void longjmp(jmp_buf env, int val); */ | |
| 48 | ||
| 49 | ENTRY_POINT(_longjmp) | |
| 50 | #ifdef __ARM_ARCH_7K__ | |
| 51 | sub sp, sp, #16 // armv7k stack is 16-byte aligned. | |
| 52 | #else | |
| 53 | sub sp, sp, #4 | |
| 54 | #endif | |
| 55 | mov r6, r0 // preserve args across _sigprocmask | |
| 56 | mov r8, r1 | |
| 57 | ldr r0, [ r6, #JMP_sig ] // restore the signal mask | |
| 58 | mov r1, sp // set | |
| 59 | str r0, [sp] | |
| 60 | movs r0, #3 // SIG_SETMASK | |
| 61 | movs r2, #0 // oset | |
| 62 | CALL_EXTERNAL(_sigprocmask) | |
| 63 | mov r0, r6 | |
| 64 | mov r1, r8 | |
| 65 | #ifdef __ARM_ARCH_7K__ | |
| 66 | add sp, sp, #16 // armv7k stack is 16-byte aligned. | |
| 67 | #else | |
| 68 | add sp, sp, #4 | |
| 69 | #endif | |
| 70 | L__exit: | |
| 71 | BRANCH_EXTERNAL(__longjmp) |