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-rw-r--r--sysdeps/unix/alpha/sysdep.h103
1 files changed, 81 insertions, 22 deletions
diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h
index f9f1dd6..2e5bc79 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 */
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