PR c++/44059

[pf3gnuchains/gcc-fork.git] / gcc / config / elfos.h

diff --git a/gcc/config/elfos.h b/gcc/config/elfos.h
index 9eed0d1..6818f66 100644 (file)
--- a/gcc/config/elfos.h
+++ b/gcc/config/elfos.h
@@ -1,14 +1,14 @@
 /* elfos.h  --  operating system specific defines to be used when
    targeting GCC for some generic ELF system
 /* elfos.h  --  operating system specific defines to be used when
    targeting GCC for some generic ELF system

-   Copyright (C) 1991, 1994, 1995, 1999, 2000, 2001, 2002, 2003, 2004
-   Free Software Foundation, Inc.
+   Copyright (C) 1991, 1994, 1995, 1999, 2000, 2001, 2002, 2003, 2004,
+   2007, 2009, 2010 Free Software Foundation, Inc.

    Based on svr4.h contributed by Ron Guilmette (rfg@netcom.com).
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
    Based on svr4.h contributed by Ron Guilmette (rfg@netcom.com).
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)

 any later version.
 
 GCC is distributed in the hope that it will be useful,
 any later version.
 
 GCC is distributed in the hope that it will be useful,


@@ -16,10 +16,14 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 

-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING.  If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */

 
 #define TARGET_OBJFMT_CPP_BUILTINS()           \
   do                                           \
 
 #define TARGET_OBJFMT_CPP_BUILTINS()           \
   do                                           \


@@ -40,12 +44,15 @@ Boston, MA 02111-1307, USA.  */
 #undef  USER_LABEL_PREFIX
 #define USER_LABEL_PREFIX ""
 
 #undef  USER_LABEL_PREFIX
 #define USER_LABEL_PREFIX ""
 

-/* Biggest alignment supported by the object file format of this
-   machine.  Use this macro to limit the alignment which can be
-   specified using the `__attribute__ ((aligned (N)))' construct.  If
-   not defined, the default value is `BIGGEST_ALIGNMENT'.  */
+/* The biggest alignment supported by ELF in bits. 32-bit ELF 
+   supports section alignment up to (0x80000000 * 8), while 
+   64-bit ELF supports (0x8000000000000000 * 8). If this macro 
+   is not defined, the default is the largest alignment supported 
+   by 32-bit ELF and representable on a 32-bit host. Use this
+   macro to limit the alignment which can be specified using
+   the `__attribute__ ((aligned (N)))' construct.  */

 #ifndef MAX_OFILE_ALIGNMENT
 #ifndef MAX_OFILE_ALIGNMENT

-#define MAX_OFILE_ALIGNMENT (32768 * 8)
+#define MAX_OFILE_ALIGNMENT (((unsigned int) 1 << 28) * 8)

 #endif
 
 /* Use periods rather than dollar signs in special g++ assembler names.  */
 #endif
 
 /* Use periods rather than dollar signs in special g++ assembler names.  */


@@ -221,6 +228,8 @@ Boston, MA 02111-1307, USA.  */
 #define TARGET_ASM_SELECT_RTX_SECTION default_elf_select_rtx_section
 #undef TARGET_ASM_SELECT_SECTION
 #define TARGET_ASM_SELECT_SECTION default_elf_select_section
 #define TARGET_ASM_SELECT_RTX_SECTION default_elf_select_rtx_section
 #undef TARGET_ASM_SELECT_SECTION
 #define TARGET_ASM_SELECT_SECTION default_elf_select_section

+#undef  TARGET_HAVE_SWITCHABLE_BSS_SECTIONS
+#define TARGET_HAVE_SWITCHABLE_BSS_SECTIONS true

 
 /* Define the strings used for the special svr4 .type and .size directives.
    These strings generally do not vary from one system running svr4 to
 
 /* Define the strings used for the special svr4 .type and .size directives.
    These strings generally do not vary from one system running svr4 to


@@ -280,24 +289,39 @@ Boston, MA 02111-1307, USA.  */
 
 /* Write the extra assembler code needed to declare an object properly.  */
 
 
 /* Write the extra assembler code needed to declare an object properly.  */
 

-#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)              \
-  do                                                           \
-    {                                                          \
-      HOST_WIDE_INT size;                                      \
-                                                               \
-      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                \
-                                                               \
-      size_directive_output = 0;                               \
-      if (!flag_inhibit_size_directive                         \
-         && (DECL) && DECL_SIZE (DECL))                        \
-       {                                                       \
-         size_directive_output = 1;                            \
-         size = int_size_in_bytes (TREE_TYPE (DECL));          \
-         ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
-       }                                                       \
-                                                               \
-      ASM_OUTPUT_LABEL (FILE, NAME);                           \
-    }                                                          \
+#ifdef HAVE_GAS_GNU_UNIQUE_OBJECT
+#define USE_GNU_UNIQUE_OBJECT 1
+#else
+#define USE_GNU_UNIQUE_OBJECT 0
+#endif
+
+#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                      \
+  do                                                                   \
+    {                                                                  \
+      HOST_WIDE_INT size;                                              \
+                                                                       \
+      /* For template static data member instantiations or             \
+        inline fn local statics and their guard variables, use         \
+        gnu_unique_object so that they will be combined even under     \
+        RTLD_LOCAL.  Don't use gnu_unique_object for typeinfo,         \
+        vtables and other read-only artificial decls.  */              \
+      if (USE_GNU_UNIQUE_OBJECT && DECL_ONE_ONLY (DECL)                        \
+         && (!DECL_ARTIFICIAL (DECL) || !TREE_READONLY (DECL)))        \
+       ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "gnu_unique_object");    \
+      else                                                             \
+       ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");               \
+                                                                       \
+      size_directive_output = 0;                                       \
+      if (!flag_inhibit_size_directive                                 \
+         && (DECL) && DECL_SIZE (DECL))                                \
+       {                                                               \
+         size_directive_output = 1;                                    \
+         size = int_size_in_bytes (TREE_TYPE (DECL));                  \
+         ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);                 \
+       }                                                               \
+                                                                       \
+      ASM_OUTPUT_LABEL (FILE, NAME);                                   \
+    }                                                                  \

   while (0)
 
 /* Output the size directive for a decl in rest_of_decl_compilation
   while (0)
 
 /* Output the size directive for a decl in rest_of_decl_compilation


@@ -427,14 +451,15 @@ Boston, MA 02111-1307, USA.  */
 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH)                            \
   do                                                                   \
     {                                                                  \
 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH)                            \
   do                                                                   \
     {                                                                  \

-      register const unsigned char *_ascii_bytes =                     \
+      const unsigned char *_ascii_bytes =                              \

        (const unsigned char *) (STR);                                  \
        (const unsigned char *) (STR);                                  \

-      register const unsigned char *limit = _ascii_bytes + (LENGTH);   \
-      register unsigned bytes_in_chunk = 0;                            \
+      const unsigned char *limit = _ascii_bytes + (LENGTH);            \
+      const unsigned char *last_null = NULL;                           \
+      unsigned bytes_in_chunk = 0;                                     \

                                                                        \
       for (; _ascii_bytes < limit; _ascii_bytes++)                     \
         {                                                              \
                                                                        \
       for (; _ascii_bytes < limit; _ascii_bytes++)                     \
         {                                                              \

-         register const unsigned char *p;                              \
+         const unsigned char *p;                                       \

                                                                        \
          if (bytes_in_chunk >= 60)                                     \
            {                                                           \
                                                                        \
          if (bytes_in_chunk >= 60)                                     \
            {                                                           \


@@ -442,8 +467,14 @@ Boston, MA 02111-1307, USA.  */
              bytes_in_chunk = 0;                                       \
            }                                                           \
                                                                        \
              bytes_in_chunk = 0;                                       \
            }                                                           \
                                                                        \

-         for (p = _ascii_bytes; p < limit && *p != '\0'; p++)          \
-           continue;                                                   \
+         if (_ascii_bytes > last_null)                                 \
+           {                                                           \
+             for (p = _ascii_bytes; p < limit && *p != '\0'; p++)      \
+               continue;                                               \
+             last_null = p;                                            \
+           }                                                           \
+         else                                                          \
+           p = last_null;                                              \

                                                                        \
          if (p < limit && (p - _ascii_bytes) <= (long)STRING_LIMIT)    \
            {                                                           \
                                                                        \
          if (p < limit && (p - _ascii_bytes) <= (long)STRING_LIMIT)    \
            {                                                           \


@@ -487,3 +518,18 @@ Boston, MA 02111-1307, USA.  */
         fprintf ((FILE), "\"\n");                                      \
     }                                                                  \
   while (0)
         fprintf ((FILE), "\"\n");                                      \
     }                                                                  \
   while (0)

+
+/* Allow the use of the -frecord-gcc-switches switch via the
+   elf_record_gcc_switches function defined in varasm.c.  */
+#undef  TARGET_ASM_RECORD_GCC_SWITCHES
+#define TARGET_ASM_RECORD_GCC_SWITCHES elf_record_gcc_switches
+
+/* A C statement (sans semicolon) to output to the stdio stream STREAM
+   any text necessary for declaring the name of an external symbol
+   named NAME which is referenced in this compilation but not defined.
+   It is needed to properly support non-default visibility.  */
+
+#ifndef ASM_OUTPUT_EXTERNAL
+#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
+  default_elf_asm_output_external (FILE, DECL, NAME)
+#endif