projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| aebcf54c | 1 | /* Jump to a new context. |
| 04277e02 | 2 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
| aebcf54c UD |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| aebcf54c UD |
18 | |
| 19 | #include <sysdep.h> | |
| 5ef6ae4b | 20 | #include <rtld-global-offsets.h> |
| 54ee14b3 | 21 | #include <shlib-compat.h> |
| aebcf54c UD |
22 | |
| 23 | #define __ASSEMBLY__ | |
| 24 | #include <asm/ptrace.h> | |
| 25 | #include "ucontext_i.h" | |
| 26 | ||
| c50ce9a4 UD |
27 | #define __CONTEXT_FUNC_NAME __setcontext |
| 28 | #define __CONTEXT_ENABLE_FPRS 1 | |
| 29 | #define __CONTEXT_ENABLE_VRS 1 | |
| 30 | ||
| 31 | /* Size of ucontext in GLIBC_2.3.4 and later. */ | |
| 32 | #define _UC_SIZE_2_3_4 1184 | |
| 33 | ||
| c50ce9a4 UD |
34 | .section ".text"; |
| 35 | ENTRY (__setcontext) | |
| 36 | mr r4,r3 | |
| 37 | li r3,0 | |
| 38 | li r5,_UC_SIZE_2_3_4; | |
| 39 | DO_CALL (SYS_ify (swapcontext)); | |
| 40 | bso- cr0,1f | |
| 41 | /* the kernel does not set the return code for the success case */ | |
| 42 | li r3,0 | |
| 43 | blr | |
| 44 | 1: | |
| 45 | b __syscall_error@local | |
| 46 | END(__setcontext) | |
| aebcf54c | 47 | |
| 5ef6ae4b UD |
48 | versioned_symbol (libc, __setcontext, setcontext, GLIBC_2_3_4) |
| 49 | ||
| 50 | #if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) | |
| 51 | ||
| d3a4a571 | 52 | compat_text_section |
| 9c84384c JM |
53 | |
| 54 | # undef __CONTEXT_FUNC_NAME | |
| c50ce9a4 UD |
55 | # define __CONTEXT_FUNC_NAME __novec_setcontext |
| 56 | # undef __CONTEXT_ENABLE_VRS | |
| ef690add | 57 | |
| c50ce9a4 | 58 | # include "setcontext-common.S" |
| 5ef6ae4b | 59 | |
| d3a4a571 | 60 | .previous |
| 5ef6ae4b UD |
61 | |
| 62 | compat_symbol (libc, __novec_setcontext, setcontext, GLIBC_2_3_3) | |
| 63 | ||
| 64 | #endif | |
| 54ee14b3 | 65 | |
| f89d6892 | 66 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_3) |
| 54ee14b3 | 67 | |
| c50ce9a4 UD |
68 | # define _ERRNO_H 1 |
| 69 | # include <bits/errno.h> | |
| 54ee14b3 | 70 | |
| d3a4a571 | 71 | compat_text_section |
| 54ee14b3 UD |
72 | ENTRY (__setcontext_stub) |
| 73 | li r3,ENOSYS | |
| b0e196a4 | 74 | b __syscall_error@local |
| d3a4a571 UD |
75 | END (__setcontext_stub) |
| 76 | .previous | |
| 54ee14b3 | 77 | |
| f89d6892 | 78 | compat_symbol (libc, __setcontext_stub, setcontext, GLIBC_2_0) |
| 54ee14b3 UD |
79 | |
| 80 | #endif |