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84 lines
2.1 KiB
ArmAsm
84 lines
2.1 KiB
ArmAsm
/* Save current context.
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Copyright (C) 2002, 2004, 2005, 2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <rtld-global-offsets.h>
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#include <shlib-compat.h>
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#include <kernel-features.h>
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#define __ASSEMBLY__
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#include <asm/ptrace.h>
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#include "ucontext_i.h"
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#define __CONTEXT_FUNC_NAME __getcontext
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#define __CONTEXT_ENABLE_FPRS 1
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#define __CONTEXT_ENABLE_VRS 1
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/* Size of ucontext in GLIBC_2.3.4 and later. */
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#define _UC_SIZE_2_3_4 1184
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#ifdef __ASSUME_SWAPCONTEXT_SYSCALL
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.section ".text";
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ENTRY (__getcontext)
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li r4,0
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li r5,_UC_SIZE_2_3_4;
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DO_CALL (SYS_ify (swapcontext));
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bso- cr0,1f
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/* the kernel does not set the return code for the success case */
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li r3,0
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blr
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1:
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b __syscall_error@local
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END(__getcontext)
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#else
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# include "getcontext-common.S"
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#endif
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versioned_symbol (libc, __getcontext, getcontext, GLIBC_2_3_4)
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#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
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compat_text_section
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# undef __CONTEXT_FUNC_NAME
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# define __CONTEXT_FUNC_NAME __novec_getcontext
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# undef __CONTEXT_ENABLE_VRS
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# include "getcontext-common.S"
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.previous
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compat_symbol (libc, __novec_getcontext, getcontext, GLIBC_2_3_3)
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#endif
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#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3)
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# define _ERRNO_H 1
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# include <bits/errno.h>
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compat_text_section
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ENTRY (__getcontext_stub)
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li r3,ENOSYS
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b __syscall_error@local
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END (__getcontext_stub)
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.previous
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compat_symbol (libc, __getcontext_stub, getcontext, GLIBC_2_1)
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#endif
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