projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 6601e61a | 1 | /* |
| 6d2010ae | 2 | * Copyright (c) 2010 Apple Inc. All rights reserved. |
| 6601e61a | 3 | * |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 6601e61a | 5 | * |
| 2d21ac55 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. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 6601e61a | 14 | * |
| 2d21ac55 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 6601e61a A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 6601e61a | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 6601e61a A |
27 | */ |
| 28 | ||
| 39236c6e A |
29 | #include <TargetConditionals.h> |
| 30 | #include <stddef.h> | |
| 31 | #include <stdint.h> | |
| 32 | #include "tsd.h" | |
| 33 | ||
| 34 | /* | |
| 35 | * cerror takes the return value of the syscall, being non-zero, and | |
| 36 | * stores it in errno. It needs to return -1 to indicate failure but | |
| 37 | * 64-bit platforms need to ensure that possible 128-bit wide return | |
| 38 | * values are also properly set. | |
| 39 | */ | |
| 40 | #ifdef __LP64__ | |
| 41 | typedef unsigned __int128 cerror_return_t; | |
| 42 | #else | |
| 43 | typedef uint64_t cerror_return_t; | |
| 44 | #endif | |
| 45 | ||
| 46 | extern void _pthread_exit_if_canceled(int error); | |
| 47 | ||
| 48 | #undef errno | |
| 6d2010ae | 49 | int errno; |
| 39236c6e A |
50 | |
| 51 | int * | |
| 52 | __error(void) | |
| 53 | { | |
| 54 | void *ptr = _os_tsd_get_direct(__TSD_ERRNO); | |
| 55 | if (ptr != NULL) { | |
| 56 | return (int*)ptr; | |
| 57 | } | |
| 58 | return &errno; | |
| 59 | } | |
| 60 | ||
| 61 | __attribute__((noinline)) | |
| 62 | cerror_return_t | |
| 63 | cerror_nocancel(int err) | |
| 64 | { | |
| 65 | errno = err; | |
| 66 | int *tsderrno = (int*)_os_tsd_get_direct(__TSD_ERRNO); | |
| 67 | if (tsderrno) { | |
| 68 | *tsderrno = err; | |
| 69 | } | |
| 70 | return -1; | |
| 71 | } | |
| 72 | ||
| 73 | __attribute__((noinline)) | |
| 74 | cerror_return_t | |
| 75 | cerror(int err) | |
| 76 | { | |
| 77 | _pthread_exit_if_canceled(err); | |
| 78 | return cerror_nocancel(err); | |
| 79 | } |