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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-07-08 16:01:41 +0200
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-07-17 11:22:40 +0200
commit4458cc330e6e5b7369151ebe172c00faceb43ade (patch)
treeeb96eb6ccda71a9b93b9f9b7d5cfda500d23d92b /libc/sysdeps/linux/i386/sysdep.h
parentff58e44fc38474b1898c59caf9a5e75d0d8c6c57 (diff)
cleanup PTR_MANGLE/PTR_DEMANGLE support
As this is only implemented for a few architecture and not well tested, just remove it. Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/i386/sysdep.h')
-rw-r--r--libc/sysdeps/linux/i386/sysdep.h30
1 files changed, 0 insertions, 30 deletions
diff --git a/libc/sysdeps/linux/i386/sysdep.h b/libc/sysdeps/linux/i386/sysdep.h
index c92a10663..4fa47fcf2 100644
--- a/libc/sysdeps/linux/i386/sysdep.h
+++ b/libc/sysdeps/linux/i386/sysdep.h
@@ -396,34 +396,4 @@ __x86.get_pc_thunk.reg: \
cfi_restore (ebp); L(POPBP1):
#endif /* __ASSEMBLER__ */
-
-
-/* Pointer mangling support. */
-#if defined NOT_IN_libc && defined IS_IN_rtld
-/* We cannot use the thread descriptor because in ld.so we use setjmp
- earlier than the descriptor is initialized. Using a global variable
- is too complicated here since we have no PC-relative addressing mode. */
-#else
-# ifdef __ASSEMBLER__
-# define PTR_MANGLE(reg) xorl %gs:POINTER_GUARD, reg; \
- roll $9, reg
-# define PTR_DEMANGLE(reg) rorl $9, reg; \
- xorl %gs:POINTER_GUARD, reg
-# else
-# include <stddef.h>
-# define PTR_MANGLE(var) __asm__ ("xorl %%gs:%c2, %0\n" \
- "roll $9, %0" \
- : "=r" (var) \
- : "0" (var), \
- "i" (offsetof (tcbhead_t, \
- pointer_guard)))
-# define PTR_DEMANGLE(var) __asm__ ("rorl $9, %0\n" \
- "xorl %%gs:%c2, %0" \
- : "=r" (var) \
- : "0" (var), \
- "i" (offsetof (tcbhead_t, \
- pointer_guard)))
-# endif
-#endif
-
#endif /* linux/i386/sysdep.h */