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Line
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| 0 |
-- sysdeps/unix/alpha/sysdep.h |
0 |
++ sysdeps/unix/alpha/sysdep.h |
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Lines 397-438
__LABEL(name) \
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| 397 |
_sc_ret = _sc_0, _sc_err = _sc_19; \ |
397 |
_sc_ret = _sc_0, _sc_err = _sc_19; \ |
| 398 |
} |
398 |
} |
| 399 |
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399 |
|
| 400 |
/* Pointer mangling support. Note that tls access is slow enough that |
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|
| 401 |
we don't deoptimize things by placing the pointer check value there. */ |
| 402 |
|
| 403 |
#include <stdint.h> |
| 404 |
|
| 405 |
#if defined NOT_IN_libc && defined IS_IN_rtld |
| 406 |
# ifdef __ASSEMBLER__ |
| 407 |
# define PTR_MANGLE(dst, src, tmp) \ |
| 408 |
ldah tmp, __pointer_chk_guard_local($29) !gprelhigh; \ |
| 409 |
ldq tmp, __pointer_chk_guard_local(tmp) !gprellow; \ |
| 410 |
xor src, tmp, dst |
| 411 |
# define PTR_MANGLE2(dst, src, tmp) \ |
| 412 |
xor src, tmp, dst |
| 413 |
# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp) |
| 414 |
# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp) |
| 415 |
# else |
| 416 |
extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden; |
| 417 |
# define PTR_MANGLE(var) \ |
| 418 |
(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local) |
| 419 |
# define PTR_DEMANGLE(var) PTR_MANGLE(var) |
| 420 |
# endif |
| 421 |
#elif defined PIC |
| 422 |
# ifdef __ASSEMBLER__ |
| 423 |
# define PTR_MANGLE(dst, src, tmp) \ |
| 424 |
ldq tmp, __pointer_chk_guard; \ |
| 425 |
xor src, tmp, dst |
| 426 |
# define PTR_MANGLE2(dst, src, tmp) \ |
| 427 |
xor src, tmp, dst |
| 428 |
# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp) |
| 429 |
# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp) |
| 430 |
# else |
| 431 |
extern uintptr_t __pointer_chk_guard attribute_relro; |
| 432 |
# define PTR_MANGLE(var) \ |
| 433 |
(var) = (void *) ((uintptr_t) (var) ^ __pointer_chk_guard) |
| 434 |
# define PTR_DEMANGLE(var) PTR_MANGLE(var) |
| 435 |
# endif |
| 436 |
#endif |
| 437 |
|
| 438 |
#endif /* ASSEMBLER */ |
400 |
#endif /* ASSEMBLER */ |
| 439 |
-- sysdeps/unix/sysv/linux/alpha/sysdep.h |
401 |
++ sysdeps/unix/sysv/linux/alpha/sysdep.h |
|
Lines 98-101
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| 98 |
INTERNAL_SYSCALL1(name, err_out, nr, args); \ |
98 |
INTERNAL_SYSCALL1(name, err_out, nr, args); \ |
| 99 |
}) |
99 |
}) |
| 100 |
|
100 |
|
|
|
101 |
/* Pointer mangling support. Note that tls access is slow enough that |
| 102 |
we don't deoptimize things by placing the pointer check value there. */ |
| 103 |
|
| 104 |
#if defined NOT_IN_libc && defined IS_IN_rtld |
| 105 |
# ifdef __ASSEMBLER__ |
| 106 |
# define PTR_MANGLE(dst, src, tmp) \ |
| 107 |
ldah tmp, __pointer_chk_guard_local($29) !gprelhigh; \ |
| 108 |
ldq tmp, __pointer_chk_guard_local(tmp) !gprellow; \ |
| 109 |
xor src, tmp, dst |
| 110 |
# define PTR_MANGLE2(dst, src, tmp) \ |
| 111 |
xor src, tmp, dst |
| 112 |
# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp) |
| 113 |
# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp) |
| 114 |
# else |
| 115 |
extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden; |
| 116 |
# define PTR_MANGLE(var) \ |
| 117 |
(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local) |
| 118 |
# define PTR_DEMANGLE(var) PTR_MANGLE(var) |
| 119 |
# endif |
| 120 |
#elif defined PIC |
| 121 |
# ifdef __ASSEMBLER__ |
| 122 |
# define PTR_MANGLE(dst, src, tmp) \ |
| 123 |
ldq tmp, __pointer_chk_guard; \ |
| 124 |
xor src, tmp, dst |
| 125 |
# define PTR_MANGLE2(dst, src, tmp) \ |
| 126 |
xor src, tmp, dst |
| 127 |
# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp) |
| 128 |
# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp) |
| 129 |
# else |
| 130 |
extern uintptr_t __pointer_chk_guard attribute_relro; |
| 131 |
# define PTR_MANGLE(var) \ |
| 132 |
(var) = (void *) ((uintptr_t) (var) ^ __pointer_chk_guard) |
| 133 |
# define PTR_DEMANGLE(var) PTR_MANGLE(var) |
| 134 |
# endif |
| 135 |
#else |
| 136 |
/* Pointer mangling is not yet supported for static libc on alpha. */ |
| 137 |
# ifndef __ASSEMBLER__ |
| 138 |
# define PTR_MANGLE(var) (void) (var) |
| 139 |
# define PTR_DEMANGLE(var) (void) (var) |
| 140 |
# endif |
| 141 |
#endif |
| 142 |
|
| 101 |
#endif /* _LINUX_ALPHA_SYSDEP_H */ |
143 |
#endif /* _LINUX_ALPHA_SYSDEP_H */ |
