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authorH.J. Lu <hjl.tools@gmail.com>2017-11-01 05:37:10 -0700
committerH.J. Lu <hjl.tools@gmail.com>2017-11-01 05:37:26 -0700
commit95b93c6e0d7bf0321f265cf6e85c7fb4417cbda6 (patch)
treef43d997aba07996bd5f6b7ed8035920dcc4c2d0f /sysdeps/x86_64/sysdep.h
parent1bb3653925eae1226cd18a3d700371291850b20f (diff)
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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.
Diffstat (limited to 'sysdeps/x86_64/sysdep.h')
-rw-r--r--sysdeps/x86_64/sysdep.h42
1 files changed, 1 insertions, 41 deletions
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