diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86_64/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/sysdep.h | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h index 740abefcfd..5e4d7827d7 100644 --- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h +++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h @@ -381,46 +381,6 @@ #endif /* __ASSEMBLER__ */ - -/* Pointer mangling support. */ -#if IS_IN (rtld) -/* We cannot use the thread descriptor because in ld.so we use setjmp - earlier than the descriptor is initialized. */ -# ifdef __ASSEMBLER__ -# define PTR_MANGLE(reg) xor __pointer_chk_guard_local(%rip), reg; \ - rol $2*LP_SIZE+1, reg -# define PTR_DEMANGLE(reg) ror $2*LP_SIZE+1, reg; \ - xor __pointer_chk_guard_local(%rip), reg -# else -# define PTR_MANGLE(reg) asm ("xor __pointer_chk_guard_local(%%rip), %0\n" \ - "rol $2*" LP_SIZE "+1, %0" \ - : "=r" (reg) : "0" (reg)) -# define PTR_DEMANGLE(reg) asm ("ror $2*" LP_SIZE "+1, %0\n" \ - "xor __pointer_chk_guard_local(%%rip), %0" \ - : "=r" (reg) : "0" (reg)) -# endif -#else -# ifdef __ASSEMBLER__ -# define PTR_MANGLE(reg) xor %fs:POINTER_GUARD, reg; \ - rol $2*LP_SIZE+1, reg -# define PTR_DEMANGLE(reg) ror $2*LP_SIZE+1, reg; \ - xor %fs:POINTER_GUARD, reg -# else -# define PTR_MANGLE(var) asm ("xor %%fs:%c2, %0\n" \ - "rol $2*" LP_SIZE "+1, %0" \ - : "=r" (var) \ - : "0" (var), \ - "i" (offsetof (tcbhead_t, \ - pointer_guard))) -# define PTR_DEMANGLE(var) asm ("ror $2*" LP_SIZE "+1, %0\n" \ - "xor %%fs:%c2, %0" \ - : "=r" (var) \ - : "0" (var), \ - "i" (offsetof (tcbhead_t, \ - pointer_guard))) -# endif -#endif - /* How to pass the off{64}_t argument on p{readv,writev}{64}. */ #undef LO_HI_LONG #define LO_HI_LONG(val) (val), 0 |