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GNU C Library master sources branch master updated. glibc-2.26.9000-699-g95b93c6
- From: hjl at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 1 Nov 2017 13:11:21 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.26.9000-699-g95b93c6
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=95b93c6e0d7bf0321f265cf6e85c7fb4417cbda6
commit 95b93c6e0d7bf0321f265cf6e85c7fb4417cbda6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Nov 1 05:37:10 2017 -0700
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.
diff --git a/ChangeLog b/ChangeLog
index 6608b1b..d38060b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,33 @@
+2017-11-01 H.J. Lu <hongjiu.lu@intel.com>
+
+ * 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.
+
2017-10-31 Rafal Luzynski <digitalfreak@lingonborough.com>
* localedata/unicode-gen/gen_unicode_ctype.py (output_head):
diff --git a/sysdeps/i386/sysdep.h b/sysdeps/i386/sysdep.h
index d2b0860..5cd7f25 100644
--- a/sysdeps/i386/sysdep.h
+++ b/sysdeps/i386/sysdep.h
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <sysdeps/generic/sysdep.h>
+#include <sysdeps/x86/sysdep.h>
#include <features.h> /* For __GNUC_PREREQ. */
@@ -39,32 +39,6 @@
/* 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.
-
- There is currently a bug in gdb which prevents us from specifying
- incomplete stabs information. Fake some entries here which specify
- the current source file. */
-#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
@@ -77,12 +51,6 @@
#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) \
.globl syscall_error; \
lose: SYSCALL_PIC_SETUP \
@@ -91,10 +59,6 @@ lose: SYSCALL_PIC_SETUP \
DO_CALL (syscall_name, args); \
jb lose
-#undef PSEUDO_END
-#define PSEUDO_END(name) \
- END (name)
-
# define SETUP_PIC_REG(reg) \
.ifndef GET_PC_THUNK(reg); \
.section .gnu.linkonce.t.GET_PC_THUNK(reg),"ax",@progbits; \
@@ -129,13 +93,6 @@ GET_PC_THUNK(reg): \
#define SYSCALL_PIC_SETUP /* Nothing. */
#endif
-/* Local label name for asm code. */
-#ifndef L
-#define L(name) .L##name
-#endif
-
-#define atom_text_section .section ".text.atom", "ax"
-
#else /* __ASSEMBLER__ */
# define SETUP_PIC_REG_STR(reg) \
diff --git a/sysdeps/x86/sysdep.h b/sysdeps/x86/sysdep.h
new file mode 100644
index 0000000..eb25e4b
--- /dev/null
+++ b/sysdeps/x86/sysdep.h
@@ -0,0 +1,69 @@
+/* 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 */
diff --git a/sysdeps/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h
index 1c52544..4b85475 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
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 30 +++++++++++++++++++++
sysdeps/i386/sysdep.h | 45 +------------------------------
sysdeps/{sh => x86}/sysdep.h | 60 +++++++++++++++++++-----------------------
sysdeps/x86_64/sysdep.h | 42 +----------------------------
4 files changed, 59 insertions(+), 118 deletions(-)
copy sysdeps/{sh => x86}/sysdep.h (65%)
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