crosstool-ng: patches/glibc/2.6.1/200-alpha-ptr

     1 --- glibc-2.6.1.orig/sysdeps/unix/alpha/sysdep.h

     2 +++ glibc-2.6.1/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-2.6.1.orig/sysdeps/unix/sysv/linux/alpha/sysdep.h

    47 +++ glibc-2.6.1/sysdeps/unix/sysv/linux/alpha/sysdep.h

    48 @@ -29,6 +29,8 @@

    49  /* There is some commonality.  */

    50  #include <sysdeps/unix/alpha/sysdep.h>

    52 +#include <tls.h>

    53 +

    54  /* For Linux we can use the system call table in the header file

    55  	/usr/include/asm/unistd.h

    56     of the kernel.  But these symbols do not follow the SYS_* syntax

    57 @@ -96,4 +96,46 @@

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

    59  })

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

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

    63 +

    64 +#if defined NOT_IN_libc && defined IS_IN_rtld

    65 +# ifdef __ASSEMBLER__

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

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

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

    69 +	xor	src, tmp, dst

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

    71 +	xor	src, tmp, dst

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

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

    74 +# else

    75 +extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;

    76 +#  define PTR_MANGLE(var)	\

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

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

    79 +# endif

    80 +#elif defined PIC

    81 +# ifdef __ASSEMBLER__

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

    83 +	ldq	tmp, __pointer_chk_guard;	\

    84 +	xor	src, tmp, dst

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

    86 +	xor	src, tmp, dst

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

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

    89 +# else

    90 +extern uintptr_t __pointer_chk_guard attribute_relro;

    91 +#  define PTR_MANGLE(var)	\

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

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

    94 +# endif

    95 +#else

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

    97 +# ifndef __ASSEMBLER__

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

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

   100 +# endif

   101 +#endif

   102 +

   103  #endif /* _LINUX_ALPHA_SYSDEP_H */

author	Arnaud Lacombe <lacombar@gmail.com>
	Tue Aug 03 06:17:51 2010 +0200 (2010-08-03)
changeset 2064	f5ebe8c429dc
permissions	-rw-r--r--