| 1 | /* |
| 2 | * Copyright (c) 2000 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 | #ifndef _BSD_SETJMP_H |
| 24 | #define _BSD_SETJMP_H |
| 25 | |
| 26 | #include <sys/cdefs.h> |
| 27 | #include <Availability.h> |
| 28 | |
| 29 | #if defined(__x86_64__) |
| 30 | /* |
| 31 | * _JBLEN is number of ints required to save the following: |
| 32 | * rflags, rip, rbp, rsp, rbx, r12, r13, r14, r15... these are 8 bytes each |
| 33 | * mxcsr, fp control word, sigmask... these are 4 bytes each |
| 34 | * add 16 ints for future expansion needs... |
| 35 | */ |
| 36 | #define _JBLEN ((9 * 2) + 3 + 16) |
| 37 | typedef int jmp_buf[_JBLEN]; |
| 38 | typedef int sigjmp_buf[_JBLEN + 1]; |
| 39 | |
| 40 | #elif defined(__i386__) |
| 41 | |
| 42 | /* |
| 43 | * _JBLEN is number of ints required to save the following: |
| 44 | * eax, ebx, ecx, edx, edi, esi, ebp, esp, ss, eflags, eip, |
| 45 | * cs, de, es, fs, gs == 16 ints |
| 46 | * onstack, mask = 2 ints |
| 47 | */ |
| 48 | |
| 49 | #define _JBLEN (18) |
| 50 | typedef int jmp_buf[_JBLEN]; |
| 51 | typedef int sigjmp_buf[_JBLEN + 1]; |
| 52 | |
| 53 | #elif defined(__arm__) && !defined(__ARM_ARCH_7K__) |
| 54 | /* |
| 55 | * _JBLEN is number of ints required to save the following: |
| 56 | * r4-r8, r10, fp, sp, lr, sig == 10 register_t sized |
| 57 | * s16-s31 == 16 register_t sized + 1 int for FSTMX |
| 58 | * 1 extra int for future use |
| 59 | */ |
| 60 | #define _JBLEN (10 + 16 + 2) |
| 61 | #define _JBLEN_MAX _JBLEN |
| 62 | |
| 63 | typedef int jmp_buf[_JBLEN]; |
| 64 | typedef int sigjmp_buf[_JBLEN + 1]; |
| 65 | |
| 66 | #elif defined(__arm64__) || defined(__ARM_ARCH_7K__) |
| 67 | /* |
| 68 | * _JBLEN is the number of ints required to save the following: |
| 69 | * r21-r29, sp, fp, lr == 12 registers, 8 bytes each. d8-d15 |
| 70 | * are another 8 registers, each 8 bytes long. (aapcs64 specifies |
| 71 | * that only 64-bit versions of FP registers need to be saved). |
| 72 | * Finally, two 8-byte fields for signal handling purposes. |
| 73 | */ |
| 74 | #define _JBLEN ((14 + 8 + 2) * 2) |
| 75 | |
| 76 | typedef int jmp_buf[_JBLEN]; |
| 77 | typedef int sigjmp_buf[_JBLEN + 1]; |
| 78 | |
| 79 | #else |
| 80 | # error Undefined platform for setjmp |
| 81 | #endif |
| 82 | |
| 83 | __BEGIN_DECLS |
| 84 | extern int setjmp(jmp_buf); |
| 85 | extern void longjmp(jmp_buf, int) __dead2; |
| 86 | |
| 87 | #ifndef _ANSI_SOURCE |
| 88 | int _setjmp(jmp_buf); |
| 89 | void _longjmp(jmp_buf, int) __dead2; |
| 90 | int sigsetjmp(sigjmp_buf, int); |
| 91 | void siglongjmp(sigjmp_buf, int) __dead2; |
| 92 | #endif /* _ANSI_SOURCE */ |
| 93 | |
| 94 | #if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)) |
| 95 | void longjmperror(void); |
| 96 | #endif /* neither ANSI nor POSIX */ |
| 97 | __END_DECLS |
| 98 | |
| 99 | #endif /* _BSD_SETJMP_H */ |