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Replace __attribute__((visibility("protected")))

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With copy relocation, address of protected data defined in the shared
library may be external.  Compiler shouldn't asssume protected data will
be local.  But due to

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248

__attribute__((visibility("protected"))) doesn't work correctly, we need
to use asm (".protected xxx") instead.

	* elf/ifuncdep2.c (global): Replace
	__attribute__((visibility("protected"))) with
	asm (".protected global").
	* elf/ifuncmod1.c (global): Likewise.
	* elf/ifuncmod5.c (global): Likewise.
This commit is contained in:
H.J. Lu 2015-03-06 04:55:56 -08:00
parent 0b3467b344
commit e0ed2fb40a
4 changed files with 29 additions and 3 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2015-03-06 H.J. Lu <hongjiu.lu@intel.com>
* elf/ifuncdep2.c (global): Replace
__attribute__((visibility("protected"))) with
asm (".protected global").
* elf/ifuncmod1.c (global): Likewise.
* elf/ifuncmod5.c (global): Likewise.
2015-03-06 Joseph Myers <joseph@codesourcery.com>
* soft-fp/soft-fp.h [!_LIBC && __KERNEL__]: Include

8
elf/ifuncdep2.c
View File

@ -2,7 +2,13 @@
#include "ifunc-sel.h"
int global __attribute__ ((visibility ("protected"))) = -1;
int global = -1;
/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
is fixed. */
asm (".protected global");
static int
one (void)

8
elf/ifuncmod1.c
View File

@ -6,7 +6,13 @@
*/
#include "ifunc-sel.h"
int global __attribute__ ((visibility ("protected"))) = -1;
int global = -1;
/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
is fixed. */
asm (".protected global");
static int
one (void)

8
elf/ifuncmod5.c
View File

@ -1,7 +1,13 @@
/* Test STT_GNU_IFUNC symbols without direct function call. */
#include "ifunc-sel.h"
int global __attribute__ ((visibility ("protected"))) = -1;
int global = -1;
/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
is fixed. */
asm (".protected global");
static int
one (void)