From 95b93c6e0d7bf0321f265cf6e85c7fb4417cbda6 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Wed, 1 Nov 2017 05:37:10 -0700
Subject: x86: Add sysdeps/x86/sysdep.h

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.
---
 sysdeps/x86_64/sysdep.h | 42 +-----------------------------------------
 1 file changed, 1 insertion(+), 41 deletions(-)

(limited to 'sysdeps/x86_64')

diff --git a/sysdeps/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h
index 1c52544fa3..4b854754f0 100644
--- a/sysdeps/x86_64/sysdep.h
+++ b/sysdeps/x86_64/sysdep.h
@@ -19,7 +19,7 @@
 #ifndef _X86_64_SYSDEP_H
 #define _X86_64_SYSDEP_H 1
 
-#include <sysdeps/generic/sysdep.h>
+#include <sysdeps/x86/sysdep.h>
 
 #ifdef	__ASSEMBLER__
 
@@ -32,28 +32,6 @@
 #define cfi_offset_rel_rsp(regn, off)	.cfi_escape 0x10, regn, 0x4, 0x13, \
 					0x77, off & 0x7F | 0x80, off >> 7
 
-/* 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)
-
 /* If compiled for profiling, call `mcount' at the start of each function.  */
 #ifdef	PROF
 /* The mcount code relies on a normal frame pointer being on the stack
@@ -70,12 +48,6 @@
 #define CALL_MCOUNT		/* Do nothing.  */
 #endif
 
-/* 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
-
 #define	PSEUDO(name, syscall_name, args)				      \
 lose:									      \
   jmp JUMPTARGET(syscall_error)						      \
@@ -84,10 +56,6 @@ lose:									      \
   DO_CALL (syscall_name, args);						      \
   jb lose
 
-#undef	PSEUDO_END
-#define	PSEUDO_END(name)						      \
-  END (name)
-
 #undef JUMPTARGET
 #ifdef SHARED
 # ifdef BIND_NOW
@@ -100,14 +68,6 @@ lose:									      \
 # define JUMPTARGET(name)	name
 #endif
 
-/* 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"
-
 /* Long and pointer size in bytes.  */
 #define LP_SIZE	8
 
-- 
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