diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86_64/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/sysdep.h | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h index 5dfffca455..3a0a632aab 100644 --- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h +++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2001-2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -317,24 +317,37 @@ /* 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) xorq __pointer_chk_guard_local(%rip), reg -# define PTR_DEMANGLE(reg) PTR_MANGLE (reg) +# define PTR_MANGLE(reg) xorq __pointer_chk_guard_local(%rip), reg; \ + rolq $17, reg +# define PTR_DEMANGLE(reg) rorq $17, reg; \ + xorq __pointer_chk_guard_local(%rip), reg # else -# define PTR_MANGLE(reg) asm ("xorq __pointer_chk_guard_local(%%rip), %0"\ +# define PTR_MANGLE(reg) asm ("xorq __pointer_chk_guard_local(%%rip), %0\n" \ + "rolq $17, %0" \ + : "=r" (reg) : "0" (reg)) +# define PTR_DEMANGLE(reg) asm ("rorq $17, %0\n" \ + "xorq __pointer_chk_guard_local(%%rip), %0" \ : "=r" (reg) : "0" (reg)) -# define PTR_DEMANGLE(reg) PTR_MANGLE (reg) # endif #else # ifdef __ASSEMBLER__ -# define PTR_MANGLE(reg) xorq %fs:POINTER_GUARD, reg -# define PTR_DEMANGLE(reg) PTR_MANGLE (reg) +# define PTR_MANGLE(reg) xorq %fs:POINTER_GUARD, reg; \ + rolq $17, reg +# define PTR_DEMANGLE(reg) rorq $17, reg; \ + xorq %fs:POINTER_GUARD, reg # else -# define PTR_MANGLE(var) asm ("xorq %%fs:%c2, %0" \ +# define PTR_MANGLE(var) asm ("xorq %%fs:%c2, %0\n" \ + "rolq $17, %0" \ + : "=r" (var) \ + : "0" (var), \ + "i" (offsetof (tcbhead_t, \ + pointer_guard))) +# define PTR_DEMANGLE(var) asm ("rorq $17, %0\n" \ + "xorq %%fs:%c2, %0" \ : "=r" (var) \ : "0" (var), \ "i" (offsetof (tcbhead_t, \ pointer_guard))) -# define PTR_DEMANGLE(var) PTR_MANGLE (var) # endif #endif |