mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 01:00:07 +00:00
95b93c6e0d
Add a new header file, sysdeps/x86/sysdep.h, for common assembly code macros between i386 and x86-64. Tested on i686 and x86-64. There are no differences in outputs of "readelf -a" and "objdump -dw" on all glibc shared objects before and after the patch. * sysdeps/i386/sysdep.h: Include <sysdeps/x86/sysdep.h> instead of <sysdeps/generic/sysdep.h>. (ALIGNARG): Removed. (ASM_SIZE_DIRECTIVE): Likewise. (ENTRY): Likewise. (END): Likewise. (ENTRY_CHK): Likewise. (END_CHK): Likewise. (syscall_error): Likewise. (mcount): Likewise. (PSEUDO_END): Likewise. (L): Likewise. (atom_text_section): Likewise. * sysdeps/x86/sysdep.h: New file. * sysdeps/x86_64/sysdep.h: Include <sysdeps/x86/sysdep.h> instead of <sysdeps/generic/sysdep.h>. (ALIGNARG): Removed. (ASM_SIZE_DIRECTIVE): Likewise. (ENTRY): Likewise. (END): Likewise. (ENTRY_CHK): Likewise. (END_CHK): Likewise. (syscall_error): Likewise. (mcount): Likewise. (PSEUDO_END): Likewise. (L): Likewise. (atom_text_section): Likewise.
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* Assembler macros for x86.
|
|
Copyright (C) 2017 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/>. */
|
|
|
|
#ifndef _X86_SYSDEP_H
|
|
#define _X86_SYSDEP_H 1
|
|
|
|
#include <sysdeps/generic/sysdep.h>
|
|
|
|
#ifdef __ASSEMBLER__
|
|
|
|
/* Syntactic details of assembler. */
|
|
|
|
/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */
|
|
#define ALIGNARG(log2) 1<<log2
|
|
#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
|
|
|
|
/* Define an entry point visible from C. */
|
|
#define ENTRY(name) \
|
|
.globl C_SYMBOL_NAME(name); \
|
|
.type C_SYMBOL_NAME(name),@function; \
|
|
.align ALIGNARG(4); \
|
|
C_LABEL(name) \
|
|
cfi_startproc; \
|
|
CALL_MCOUNT
|
|
|
|
#undef END
|
|
#define END(name) \
|
|
cfi_endproc; \
|
|
ASM_SIZE_DIRECTIVE(name)
|
|
|
|
#define ENTRY_CHK(name) ENTRY (name)
|
|
#define END_CHK(name) END (name)
|
|
|
|
/* Since C identifiers are not normally prefixed with an underscore
|
|
on this system, the asm identifier `syscall_error' intrudes on the
|
|
C name space. Make sure we use an innocuous name. */
|
|
#define syscall_error __syscall_error
|
|
#define mcount _mcount
|
|
|
|
#undef PSEUDO_END
|
|
#define PSEUDO_END(name) \
|
|
END (name)
|
|
|
|
/* Local label name for asm code. */
|
|
#ifndef L
|
|
/* ELF-like local names start with `.L'. */
|
|
# define L(name) .L##name
|
|
#endif
|
|
|
|
#define atom_text_section .section ".text.atom", "ax"
|
|
|
|
#endif /* __ASSEMBLER__ */
|
|
|
|
#endif /* _X86_SYSDEP_H */
|