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ARM: Move PTR_MANGLE et al out of Linux-specific file.

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This commit is contained in:
Roland McGrath 2014-08-01 11:28:49 -07:00
parent a476ac4b45
commit 6f64e7d75f
3 changed files with 55 additions and 44 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2014-08-01 Roland McGrath <roland@hack.frob.com>
* sysdeps/unix/sysv/linux/arm/sysdep.h (PTR_MANGLE_LOAD, PTR_MANGLE)
(PTR_MANGLE2, PTR_DEMANGLE, PTR_DEMANGLE2): Move these macros...
* sysdeps/arm/sysdep.h: ... here.
[!__ASSEMBLER__]: Include <stdint.h>.
2014-08-01 Siddhesh Poyarekar <siddhesh@redhat.com>
* include/libc-symbols.h (HAVE_LIBINTL_H): Define macro.

48
sysdeps/arm/sysdep.h
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@ -19,6 +19,10 @@
#include <sysdeps/generic/sysdep.h>
#include <features.h>
#ifndef __ASSEMBLER__
# include <stdint.h>
#endif
/* The __ARM_ARCH define is provided by gcc 4.8. Construct it otherwise. */
#ifndef __ARM_ARCH
# ifdef __ARM_ARCH_2__
@ -286,3 +290,47 @@
#else
# define PC_OFS 8
#endif
/* Pointer mangling support. */
#if (defined NOT_IN_libc && defined IS_IN_rtld) || \
(!defined SHARED && (!defined NOT_IN_libc || defined IS_IN_libpthread))
# ifdef __ASSEMBLER__
# define PTR_MANGLE_LOAD(guard, tmp) \
LDST_PCREL(ldr, guard, tmp, C_SYMBOL_NAME(__pointer_chk_guard_local));
# define PTR_MANGLE(dst, src, guard, tmp) \
PTR_MANGLE_LOAD(guard, tmp); \
PTR_MANGLE2(dst, src, guard)
/* Use PTR_MANGLE2 for efficiency if guard is already loaded. */
# define PTR_MANGLE2(dst, src, guard) \
eor dst, src, guard
# define PTR_DEMANGLE(dst, src, guard, tmp) \
PTR_MANGLE (dst, src, guard, tmp)
# define PTR_DEMANGLE2(dst, src, guard) \
PTR_MANGLE2 (dst, src, guard)
# else
extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;
# define PTR_MANGLE(var) \
(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)
# define PTR_DEMANGLE(var) PTR_MANGLE (var)
# endif
#else
# ifdef __ASSEMBLER__
# define PTR_MANGLE_LOAD(guard, tmp) \
LDST_GLOBAL(ldr, guard, tmp, C_SYMBOL_NAME(__pointer_chk_guard));
# define PTR_MANGLE(dst, src, guard, tmp) \
PTR_MANGLE_LOAD(guard, tmp); \
PTR_MANGLE2(dst, src, guard)
/* Use PTR_MANGLE2 for efficiency if guard is already loaded. */
# define PTR_MANGLE2(dst, src, guard) \
eor dst, src, guard
# define PTR_DEMANGLE(dst, src, guard, tmp) \
PTR_MANGLE (dst, src, guard, tmp)
# define PTR_DEMANGLE2(dst, src, guard) \
PTR_MANGLE2 (dst, src, guard)
# else
extern uintptr_t __pointer_chk_guard attribute_relro;
# define PTR_MANGLE(var) \
(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard)
# define PTR_DEMANGLE(var) PTR_MANGLE (var)
# endif
#endif

44
sysdeps/unix/sysv/linux/arm/sysdep.h
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@ -435,48 +435,4 @@ __local_syscall_error: \
#endif /* __ASSEMBLER__ */
/* Pointer mangling support. */
#if (defined NOT_IN_libc && defined IS_IN_rtld) || \
(!defined SHARED && (!defined NOT_IN_libc || defined IS_IN_libpthread))
# ifdef __ASSEMBLER__
# define PTR_MANGLE_LOAD(guard, tmp) \
LDST_PCREL(ldr, guard, tmp, C_SYMBOL_NAME(__pointer_chk_guard_local));
# define PTR_MANGLE(dst, src, guard, tmp) \
PTR_MANGLE_LOAD(guard, tmp); \
PTR_MANGLE2(dst, src, guard)
/* Use PTR_MANGLE2 for efficiency if guard is already loaded. */
# define PTR_MANGLE2(dst, src, guard) \
eor dst, src, guard
# define PTR_DEMANGLE(dst, src, guard, tmp) \
PTR_MANGLE (dst, src, guard, tmp)
# define PTR_DEMANGLE2(dst, src, guard) \
PTR_MANGLE2 (dst, src, guard)
# else
extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;
# define PTR_MANGLE(var) \
(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)
# define PTR_DEMANGLE(var) PTR_MANGLE (var)
# endif
#else
# ifdef __ASSEMBLER__
# define PTR_MANGLE_LOAD(guard, tmp) \
LDST_GLOBAL(ldr, guard, tmp, C_SYMBOL_NAME(__pointer_chk_guard));
# define PTR_MANGLE(dst, src, guard, tmp) \
PTR_MANGLE_LOAD(guard, tmp); \
PTR_MANGLE2(dst, src, guard)
/* Use PTR_MANGLE2 for efficiency if guard is already loaded. */
# define PTR_MANGLE2(dst, src, guard) \
eor dst, src, guard
# define PTR_DEMANGLE(dst, src, guard, tmp) \
PTR_MANGLE (dst, src, guard, tmp)
# define PTR_DEMANGLE2(dst, src, guard) \
PTR_MANGLE2 (dst, src, guard)
# else
extern uintptr_t __pointer_chk_guard attribute_relro;
# define PTR_MANGLE(var) \
(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard)
# define PTR_DEMANGLE(var) PTR_MANGLE (var)
# endif
#endif
#endif /* linux/arm/sysdep.h */