crosstool-ng: patches/glibc/2.7/240-alpha-ptr

     1 --- glibc-2.7.orig/sysdeps/unix/alpha/sysdep.h

     2 +++ glibc-2.7/sysdeps/unix/alpha/sysdep.h

     3 @@ -397,42 +397,4 @@

     4  	_sc_ret = _sc_0, _sc_err = _sc_19;			\

     5  }

     7 -/* Pointer mangling support.  Note that tls access is slow enough that

     8 -   we don't deoptimize things by placing the pointer check value there.  */

9 -

    10 -#include <stdint.h>

    11 -

    12 -#if defined NOT_IN_libc && defined IS_IN_rtld

    13 -# ifdef __ASSEMBLER__

    14 -#  define PTR_MANGLE(dst, src, tmp)				\

    15 -	ldah	tmp, __pointer_chk_guard_local($29) !gprelhigh;	\

    16 -	ldq	tmp, __pointer_chk_guard_local(tmp) !gprellow;	\

    17 -	xor	src, tmp, dst

    18 -#  define PTR_MANGLE2(dst, src, tmp)				\

    19 -	xor	src, tmp, dst

    20 -#  define PTR_DEMANGLE(dst, tmp)   PTR_MANGLE(dst, dst, tmp)

    21 -#  define PTR_DEMANGLE2(dst, tmp)  PTR_MANGLE2(dst, dst, tmp)

    22 -# else

    23 -extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;

    24 -#  define PTR_MANGLE(var)	\

    25 -  (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)

    26 -#  define PTR_DEMANGLE(var)  PTR_MANGLE(var)

    27 -# endif

    28 -#elif defined PIC

    29 -# ifdef __ASSEMBLER__

    30 -#  define PTR_MANGLE(dst, src, tmp)		\

    31 -	ldq	tmp, __pointer_chk_guard;	\

    32 -	xor	src, tmp, dst

    33 -#  define PTR_MANGLE2(dst, src, tmp)		\

    34 -	xor	src, tmp, dst

    35 -#  define PTR_DEMANGLE(dst, tmp)   PTR_MANGLE(dst, dst, tmp)

    36 -#  define PTR_DEMANGLE2(dst, tmp)  PTR_MANGLE2(dst, dst, tmp)

    37 -# else

    38 -extern uintptr_t __pointer_chk_guard attribute_relro;

    39 -#  define PTR_MANGLE(var)	\

    40 -	(var) = (void *) ((uintptr_t) (var) ^ __pointer_chk_guard)

    41 -#  define PTR_DEMANGLE(var)  PTR_MANGLE(var)

    42 -# endif

    43 -#endif

    44 -

    45  #endif /* ASSEMBLER */

    46 --- glibc-2.7.orig/sysdeps/unix/sysv/linux/alpha/sysdep.h

    47 +++ glibc-2.7/sysdeps/unix/sysv/linux/alpha/sysdep.h

    48 @@ -98,4 +98,46 @@

    49  	INTERNAL_SYSCALL1(name, err_out, nr, args);			\

    50  })

    52 +/* Pointer mangling support.  Note that tls access is slow enough that

    53 +   we don't deoptimize things by placing the pointer check value there.  */

    54 +

    55 +#if defined NOT_IN_libc && defined IS_IN_rtld

    56 +# ifdef __ASSEMBLER__

    57 +#  define PTR_MANGLE(dst, src, tmp)				\

    58 +	ldah	tmp, __pointer_chk_guard_local($29) !gprelhigh;	\

    59 +	ldq	tmp, __pointer_chk_guard_local(tmp) !gprellow;	\

    60 +	xor	src, tmp, dst

    61 +#  define PTR_MANGLE2(dst, src, tmp)				\

    62 +	xor	src, tmp, dst

    63 +#  define PTR_DEMANGLE(dst, tmp)   PTR_MANGLE(dst, dst, tmp)

    64 +#  define PTR_DEMANGLE2(dst, tmp)  PTR_MANGLE2(dst, dst, tmp)

    65 +# else

    66 +extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;

    67 +#  define PTR_MANGLE(var)	\

    68 +  (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)

    69 +#  define PTR_DEMANGLE(var)  PTR_MANGLE(var)

    70 +# endif

    71 +#elif defined PIC

    72 +# ifdef __ASSEMBLER__

    73 +#  define PTR_MANGLE(dst, src, tmp)		\

    74 +	ldq	tmp, __pointer_chk_guard;	\

    75 +	xor	src, tmp, dst

    76 +#  define PTR_MANGLE2(dst, src, tmp)		\

    77 +	xor	src, tmp, dst

    78 +#  define PTR_DEMANGLE(dst, tmp)   PTR_MANGLE(dst, dst, tmp)

    79 +#  define PTR_DEMANGLE2(dst, tmp)  PTR_MANGLE2(dst, dst, tmp)

    80 +# else

    81 +extern uintptr_t __pointer_chk_guard attribute_relro;

    82 +#  define PTR_MANGLE(var)	\

    83 +	(var) = (void *) ((uintptr_t) (var) ^ __pointer_chk_guard)

    84 +#  define PTR_DEMANGLE(var)  PTR_MANGLE(var)

    85 +# endif

    86 +#else

    87 +/* Pointer mangling is not yet supported for static libc on alpha.  */

    88 +# ifndef __ASSEMBLER__

    89 +#  define PTR_MANGLE(var)   (void) (var)

    90 +#  define PTR_DEMANGLE(var) (void) (var)

    91 +# endif

    92 +#endif

    93 +

    94  #endif /* _LINUX_ALPHA_SYSDEP_H */

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Mon Jul 28 20:10:34 2008 +0000 (2008-07-28)
changeset 744	4bf8448536d5
parent 734	patches/glibc/2.7/240-glibc-2.7-alpha-ptr_mangle.patch@9416a82ef7b4
permissions	-rw-r--r--