| 1 | /* Save current context and jump to a new context. |
|---|
| 2 | Copyright (C) 2002-2024 Free Software Foundation, Inc. |
|---|
| 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 |
|---|
| 16 | License along with the GNU C Library. If not, see |
|---|
| 17 | <https://www.gnu.org/licenses/>. */ |
|---|
| 18 | |
|---|
| 19 | #include <sysdep.h> |
|---|
| 20 | #include <rtld-global-offsets.h> |
|---|
| 21 | #include <shlib-compat.h> |
|---|
| 22 | |
|---|
| 23 | #define __ASSEMBLY__ |
|---|
| 24 | #include <asm/ptrace.h> |
|---|
| 25 | #include "ucontext_i.h" |
|---|
| 26 | |
|---|
| 27 | #define __CONTEXT_FUNC_NAME __swapcontext |
|---|
| 28 | #undef __CONTEXT_ENABLE_FPRS |
|---|
| 29 | #undef __CONTEXT_ENABLE_VRS |
|---|
| 30 | |
|---|
| 31 | # include "swapcontext-common.S" |
|---|
| 32 | |
|---|
| 33 | versioned_symbol (libc, __swapcontext, swapcontext, GLIBC_2_3_4) |
|---|
| 34 | |
|---|
| 35 | #if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) |
|---|
| 36 | |
|---|
| 37 | /* For the nofpu case the old/new versions are the same function. */ |
|---|
| 38 | strong_alias (__swapcontext, __novec_swapcontext) |
|---|
| 39 | |
|---|
| 40 | compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3_3) |
|---|
| 41 | |
|---|
| 42 | #endif |
|---|
| 43 | |
|---|
| 44 | #if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3) |
|---|
| 45 | |
|---|
| 46 | #define _ERRNO_H 1 |
|---|
| 47 | #include <bits/errno.h> |
|---|
| 48 | |
|---|
| 49 | compat_text_section |
|---|
| 50 | ENTRY (__swapcontext_stub) |
|---|
| 51 | li r3,ENOSYS |
|---|
| 52 | b __syscall_error@local |
|---|
| 53 | END (__swapcontext_stub) |
|---|
| 54 | .previous |
|---|
| 55 | |
|---|
| 56 | compat_symbol (libc, __swapcontext_stub, swapcontext, GLIBC_2_1) |
|---|
| 57 | |
|---|
| 58 | #endif |
|---|
| 59 | |
|---|
