AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-01-10 19:30:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

x86-64: Use __glibc_likely/__glibc_likely in dl-machine.h

Browse Source 
The differences in elf/dl-reloc.os are

--- before    	2018-02-05 03:52:32.803125207 -0800
+++ after     	2018-02-05 03:52:14.913711879 -0800
@@ -1129,7 +1129,7 @@ _dl_relocate_object:
 	leaq	__PRETTY_FUNCTION__.9767(%rip), %rcx
 	leaq	.LC11(%rip), %rsi
 	leaq	.LC12(%rip), %rdi
-	movl	$540, %edx
+	movl	$539, %edx
 	call	__GI___assert_fail
 	.p2align 4,,10
 	.p2align 3

	* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Replace
	__builtin_expect with __glibc_likely and __glibc_likely.
	(elf_machine_lazy_rel): Likewise.
This commit is contained in:
H.J. Lu 2018-02-05 06:07:54 -08:00
parent 371b220f62
commit 06fbebfff7
2 changed files with 13 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
ChangeLog
View File

@ -1,3 +1,9 @@
2018-02-05 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Replace
__builtin_expect with __glibc_likely and __glibc_likely.
(elf_machine_lazy_rel): Likewise.
2018-02-05 H.J. Lu <hongjiu.lu@intel.com>
[BZ #22638]

14
sysdeps/x86_64/dl-machine.h
View File

@ -310,10 +310,9 @@ elf_machine_rela (struct link_map *map, const ElfW(Rela) *reloc,
: (ElfW(Addr)) sym_map->l_addr + sym->st_value);
if (sym != NULL
&& __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC,
0)
&& __builtin_expect (sym->st_shndx != SHN_UNDEF, 1)
&& __builtin_expect (!skip_ifunc, 1))
&& __glibc_unlikely (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC)
&& __glibc_likely (sym->st_shndx != SHN_UNDEF)
&& __glibc_likely (!skip_ifunc))
{
# ifndef RTLD_BOOTSTRAP
if (sym_map != map
@ -500,8 +499,8 @@ elf_machine_rela (struct link_map *map, const ElfW(Rela) *reloc,
break;
memcpy (reloc_addr_arg, (void *) value,
MIN (sym->st_size, refsym->st_size));
if (__builtin_expect (sym->st_size > refsym->st_size, 0)
|| (__builtin_expect (sym->st_size < refsym->st_size, 0)
if (__glibc_unlikely (sym->st_size > refsym->st_size)
|| (__glibc_unlikely (sym->st_size < refsym->st_size)
&& GLRO(dl_verbose)))
{
fmt = "\
@ -554,7 +553,8 @@ elf_machine_lazy_rel (struct link_map *map,
/* Check for unexpected PLT reloc type. */
if (__glibc_likely (r_type == R_X86_64_JUMP_SLOT))
{
if (__builtin_expect (map->l_mach.plt, 0) == 0)
/* Prelink has been deprecated. */
if (__glibc_likely (map->l_mach.plt == 0))
*reloc_addr += l_addr;
else
*reloc_addr =