projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d4697bc9 | 1 | /* Copyright (C) 1998-2014 Free Software Foundation, Inc. |
| d5efd131 MF |
2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 5 | modify it under the terms of the GNU Lesser General Public | |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| 8 | ||
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Lesser General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Lesser General Public | |
| 75efb018 MF |
15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| d5efd131 MF |
17 | |
| 18 | #ifndef _SYS_UCONTEXT_H | |
| 19 | #define _SYS_UCONTEXT_H 1 | |
| 20 | ||
| 21 | #include <features.h> | |
| 22 | #include <signal.h> | |
| 23 | ||
| 24 | #include <bits/sigcontext.h> | |
| 25 | ||
| 26 | /* | |
| 27 | * These are here mostly for backwards compatibility with older Unices. | |
| 28 | * IA-64 Linux does not distinguish between "struct sigcontext" and | |
| 29 | * "ucontext_t" as all the necessary info is inside the former. | |
| 30 | */ | |
| 31 | ||
| 32 | typedef struct sigcontext mcontext_t; | |
| 33 | ||
| 91e5f2e4 | 34 | #if __GNUC_PREREQ (3, 5) |
| d5efd131 MF |
35 | # define _SC_GR0_OFFSET \ |
| 36 | __builtin_offsetof (struct sigcontext, sc_gr[0]) | |
| 37 | #elif defined __GNUC__ | |
| 38 | # define _SC_GR0_OFFSET \ | |
| 39 | (((char *) &((struct sigcontext *) 0)->sc_gr[0]) - (char *) 0) | |
| 40 | #else | |
| 41 | # define _SC_GR0_OFFSET 0xc8 /* pray that this is correct... */ | |
| 42 | #endif | |
| 43 | ||
| 44 | typedef struct ucontext | |
| 45 | { | |
| 46 | union | |
| 47 | { | |
| 48 | mcontext_t _mc; | |
| 49 | struct | |
| 50 | { | |
| 51 | unsigned long _pad[_SC_GR0_OFFSET/8]; | |
| 52 | struct ucontext *_link; /* this should overlay sc_gr[0] */ | |
| 53 | } | |
| 54 | _uc; | |
| 55 | } | |
| 56 | _u; | |
| 57 | } | |
| 58 | ucontext_t; | |
| 59 | ||
| 60 | #define uc_mcontext _u._mc | |
| 61 | #define uc_sigmask _u._mc.sc_mask | |
| 62 | #define uc_stack _u._mc.sc_stack | |
| 63 | #define uc_link _u._uc._link | |
| 64 | ||
| 65 | #endif /* sys/ucontext.h */ |