2.5-18.1

[thirdparty/glibc.git] / sysdeps / unix / alpha / sysdep.h

diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h
index f9f1dd6e41b4b43ceed1daa26b7de9a6bb4cfe36..2e5bc798eb9f51f319c8d37010ee302eb7438b1f 100644 (file)
--- 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 */