| | 1 | /* |
| | 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
| | 7 | * |
| | 8 | * This file contains Original Code and/or Modifications of Original Code |
| | 9 | * as defined in and that are subject to the Apple Public Source License |
| | 10 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 11 | * compliance with the License. Please obtain a copy of the License at |
| | 12 | * http://www.opensource.apple.com/apsl/ and read it before using this |
| | 13 | * file. |
| | 14 | * |
| | 15 | * The Original Code and all software distributed under the License are |
| | 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 20 | * Please see the License for the specific language governing rights and |
| | 21 | * limitations under the License. |
| | 22 | * |
| | 23 | * @APPLE_LICENSE_HEADER_END@ |
| | 24 | */ |
| | 25 | /* |
| | 26 | * Copyright (c) 1998 Apple Computer, Inc. All rights reserved. |
| | 27 | * |
| | 28 | * File: sys/ppc/longjmp.s |
| | 29 | * |
| | 30 | * Implements siglongjmp(), longjmp(), _longjmp() |
| | 31 | * |
| | 32 | * NOTE: Scatterloading this file will BREAK the functions. |
| | 33 | * |
| | 34 | * History: |
| | 35 | * 30-Aug-1998 Umesh Vaishampayan (umeshv@apple.com) |
| | 36 | * Created. Derived from _setjmp.s, setjmp.c and setjmp.s |
| | 37 | */ |
| | 38 | |
| | 39 | #include "SYS.h" |
| | 40 | #include <architecture/ppc/asm_help.h> |
| | 41 | #include "_setjmp.h" |
| | 42 | |
| | 43 | /* |
| | 44 | * longjmp routines |
| | 45 | */ |
| | 46 | |
| | 47 | /* void siglongjmp(sigjmp_buf env, int val); */ |
| | 48 | |
| | 49 | LEAF(_siglongjmp) |
| | 50 | lwz r0, JMP_SIGFLAG(r3) ; load sigflag saved by siglongjmp() |
| | 51 | cmpwi cr1,r0,0 ; this changes cr1[EQ] which is volatile |
| | 52 | beq- cr1, L__longjmp ; if r0 == 0 do _longjmp() |
| | 53 | ; else *** fall through *** to longjmp() |
| | 54 | |
| | 55 | /* void longjmp(jmp_buf env, int val); */ |
| | 56 | |
| | 57 | LEAF(_longjmp) |
| | 58 | L_longjmp: |
| | 59 | mr r30, r3 |
| | 60 | mr r31, r4 |
| | 61 | lwz r3, JMP_sig(r3) ; restore the signal mask |
| | 62 | CALL_EXTERN(_sigsetmask) |
| | 63 | mr r4, r31 |
| | 64 | mr r3, r30 |
| | 65 | L__longjmp: |
| | 66 | BRANCH_EXTERN(__longjmp) |
projects / apple / libc.git / blame_incremental