mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-31 22:10:34 +03:00
80 lines
2.1 KiB
ArmAsm
80 lines
2.1 KiB
ArmAsm
/* Save current context and jump to a new context.
|
|
Copyright (C) 2002-2014 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include <rtld-global-offsets.h>
|
|
#include <shlib-compat.h>
|
|
#include <kernel-features.h>
|
|
|
|
#define __ASSEMBLY__
|
|
#include <asm/ptrace.h>
|
|
#include "ucontext_i.h"
|
|
|
|
#define __CONTEXT_FUNC_NAME __swapcontext
|
|
#define __CONTEXT_ENABLE_FPRS 1
|
|
#define __CONTEXT_ENABLE_VRS 1
|
|
|
|
/* Size of ucontext in GLIBC_2.3.4 and later. */
|
|
#define _UC_SIZE_2_3_4 1184
|
|
|
|
.section ".text";
|
|
ENTRY (__swapcontext)
|
|
li r5,_UC_SIZE_2_3_4;
|
|
DO_CALL (SYS_ify (swapcontext));
|
|
bso- cr0,1f
|
|
/* the kernel does not set the return code for the success case */
|
|
li r3,0
|
|
blr
|
|
1:
|
|
b __syscall_error@local
|
|
END(__swapcontext)
|
|
|
|
versioned_symbol (libc, __swapcontext, swapcontext, GLIBC_2_3_4)
|
|
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
|
|
|
|
compat_text_section
|
|
|
|
# undef __CONTEXT_FUNC_NAME
|
|
# define __CONTEXT_FUNC_NAME __novec_swapcontext
|
|
# undef __CONTEXT_ENABLE_VRS
|
|
|
|
# include "swapcontext-common.S"
|
|
|
|
.previous
|
|
|
|
compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3_3)
|
|
|
|
#endif
|
|
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3)
|
|
|
|
# define _ERRNO_H 1
|
|
# include <bits/errno.h>
|
|
|
|
compat_text_section
|
|
ENTRY (__swapcontext_stub)
|
|
li r3,ENOSYS
|
|
b __syscall_error@local
|
|
END (__swapcontext_stub)
|
|
.previous
|
|
|
|
compat_symbol (libc, __swapcontext_stub, swapcontext, GLIBC_2_1)
|
|
|
|
#endif
|