diff options
Diffstat (limited to 'sysdeps/unix/alpha/sysdep.h')
| -rw-r--r-- | sysdeps/unix/alpha/sysdep.h | 103 |
1 files changed, 81 insertions, 22 deletions
diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h index f9f1dd6e41..2e5bc798eb 100644 --- a/sysdeps/unix/alpha/sysdep.h +++ b/sysdeps/unix/alpha/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1992, 1995, 1996, 2000, 2003, 2004 +/* Copyright (C) 1992, 1995, 1996, 2000, 2003, 2004, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Brendan Kehoe (brendan@zen.org). @@ -242,9 +242,10 @@ __LABEL(name) \ register long _sc_0 inline_syscall_r0_asm; \ register long _sc_16 __asm__("$16"); \ register long _sc_19 __asm__("$19"); \ + register long _tmp_16 = (long) (arg1); \ \ _sc_0 = name; \ - _sc_16 = (long) (arg1); \ + _sc_16 = _tmp_16; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3" \ : inline_syscall_r0_out_constraint (_sc_0), \ @@ -261,10 +262,12 @@ __LABEL(name) \ register long _sc_16 __asm__("$16"); \ register long _sc_17 __asm__("$17"); \ register long _sc_19 __asm__("$19"); \ + register long _tmp_16 = (long) (arg1); \ + register long _tmp_17 = (long) (arg2); \ \ _sc_0 = name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ + _sc_16 = _tmp_16; \ + _sc_17 = _tmp_17; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4" \ : inline_syscall_r0_out_constraint (_sc_0), \ @@ -282,11 +285,14 @@ __LABEL(name) \ register long _sc_17 __asm__("$17"); \ register long _sc_18 __asm__("$18"); \ register long _sc_19 __asm__("$19"); \ + register long _tmp_16 = (long) (arg1); \ + register long _tmp_17 = (long) (arg2); \ + register long _tmp_18 = (long) (arg3); \ \ _sc_0 = name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - _sc_18 = (long) (arg3); \ + _sc_16 = _tmp_16; \ + _sc_17 = _tmp_17; \ + _sc_18 = _tmp_18; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4 %5" \ : inline_syscall_r0_out_constraint (_sc_0), \ @@ -305,12 +311,16 @@ __LABEL(name) \ register long _sc_17 __asm__("$17"); \ register long _sc_18 __asm__("$18"); \ register long _sc_19 __asm__("$19"); \ + register long _tmp_16 = (long) (arg1); \ + register long _tmp_17 = (long) (arg2); \ + register long _tmp_18 = (long) (arg3); \ + register long _tmp_19 = (long) (arg4); \ \ _sc_0 = name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - _sc_18 = (long) (arg3); \ - _sc_19 = (long) (arg4); \ + _sc_16 = _tmp_16; \ + _sc_17 = _tmp_17; \ + _sc_18 = _tmp_18; \ + _sc_19 = _tmp_19; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4 %5 %6" \ : inline_syscall_r0_out_constraint (_sc_0), \ @@ -330,13 +340,18 @@ __LABEL(name) \ register long _sc_18 __asm__("$18"); \ register long _sc_19 __asm__("$19"); \ register long _sc_20 __asm__("$20"); \ + register long _tmp_16 = (long) (arg1); \ + register long _tmp_17 = (long) (arg2); \ + register long _tmp_18 = (long) (arg3); \ + register long _tmp_19 = (long) (arg4); \ + register long _tmp_20 = (long) (arg5); \ \ _sc_0 = name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - _sc_18 = (long) (arg3); \ - _sc_19 = (long) (arg4); \ - _sc_20 = (long) (arg5); \ + _sc_16 = _tmp_16; \ + _sc_17 = _tmp_17; \ + _sc_18 = _tmp_18; \ + _sc_19 = _tmp_19; \ + _sc_20 = _tmp_20; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7" \ : inline_syscall_r0_out_constraint (_sc_0), \ @@ -357,14 +372,20 @@ __LABEL(name) \ register long _sc_19 __asm__("$19"); \ register long _sc_20 __asm__("$20"); \ register long _sc_21 __asm__("$21"); \ + register long _tmp_16 = (long) (arg1); \ + register long _tmp_17 = (long) (arg2); \ + register long _tmp_18 = (long) (arg3); \ + register long _tmp_19 = (long) (arg4); \ + register long _tmp_20 = (long) (arg5); \ + register long _tmp_21 = (long) (arg6); \ \ _sc_0 = name; \ - _sc_16 = (long) (arg1); \ - _sc_17 = (long) (arg2); \ - _sc_18 = (long) (arg3); \ - _sc_19 = (long) (arg4); \ - _sc_20 = (long) (arg5); \ - _sc_21 = (long) (arg6); \ + _sc_16 = _tmp_16; \ + _sc_17 = _tmp_17; \ + _sc_18 = _tmp_18; \ + _sc_19 = _tmp_19; \ + _sc_20 = _tmp_20; \ + _sc_21 = _tmp_21; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8" \ : inline_syscall_r0_out_constraint (_sc_0), \ @@ -376,4 +397,42 @@ __LABEL(name) \ _sc_ret = _sc_0, _sc_err = _sc_19; \ } +/* Pointer mangling support. Note that tls access is slow enough that + we don't deoptimize things by placing the pointer check value there. */ + +#include <stdint.h> + +#if defined NOT_IN_libc && defined IS_IN_rtld +# ifdef __ASSEMBLER__ +# define PTR_MANGLE(dst, src, tmp) \ + ldah tmp, __pointer_chk_guard_local($29) !gprelhigh; \ + ldq tmp, __pointer_chk_guard_local(tmp) !gprellow; \ + xor src, tmp, dst +# define PTR_MANGLE2(dst, src, tmp) \ + xor src, tmp, dst +# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp) +# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp) +# else +extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden; +# define PTR_MANGLE(var) \ + (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local) +# define PTR_DEMANGLE(var) PTR_MANGLE(var) +# endif +#elif defined PIC +# ifdef __ASSEMBLER__ +# define PTR_MANGLE(dst, src, tmp) \ + ldq tmp, __pointer_chk_guard; \ + xor src, tmp, dst +# define PTR_MANGLE2(dst, src, tmp) \ + xor src, tmp, dst +# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp) +# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp) +# else +extern uintptr_t __pointer_chk_guard attribute_relro; +# define PTR_MANGLE(var) \ + (var) = (void *) ((uintptr_t) (var) ^ __pointer_chk_guard) +# define PTR_DEMANGLE(var) PTR_MANGLE(var) +# endif +#endif + #endif /* ASSEMBLER */ |