diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.h | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h index 5286676fc1..89d5b12043 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.h +++ b/sysdeps/unix/sysv/linux/i386/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1992,1993,1995-2000,2002-2005,2006 +/* Copyright (C) 1992,1993,1995-2000,2002-2006,2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper, <drepper@gnu.org>, August 1995. @@ -566,15 +566,23 @@ asm (".L__X'%ebx = 1\n\t" is too complicated here since we have no PC-relative addressing mode. */ #else # ifdef __ASSEMBLER__ -# define PTR_MANGLE(reg) xorl %gs:POINTER_GUARD, reg -# define PTR_DEMANGLE(reg) PTR_MANGLE (reg) +# define PTR_MANGLE(reg) xorl %gs:POINTER_GUARD, reg; \ + roll $9, reg +# define PTR_DEMANGLE(reg) rorl $9, reg; \ + xorl %gs:POINTER_GUARD, reg # else -# define PTR_MANGLE(var) asm ("xorl %%gs:%c2, %0" \ +# define PTR_MANGLE(var) asm ("xorl %%gs:%c2, %0\n" \ + "roll $9, %0" \ + : "=r" (var) \ + : "0" (var), \ + "i" (offsetof (tcbhead_t, \ + pointer_guard))) +# define PTR_DEMANGLE(var) asm ("rorl $9, %0\n" \ + "xorl %%gs:%c2, %0" \ : "=r" (var) \ : "0" (var), \ "i" (offsetof (tcbhead_t, \ pointer_guard))) -# define PTR_DEMANGLE(var) PTR_MANGLE (var) # endif #endif |