/* 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
-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,
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 \
#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
-#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. */
fprintf ((FILE), "%s\n", ASM_SECTION_START_OP)
#endif
-/* Don't use weak for entities with vague linkage when HAVE_GAS_COMDAT_GROUP
- is true. */
-#define MAKE_DECL_ONE_ONLY(DECL) \
- do \
- { \
- if (!HAVE_GAS_COMDAT_GROUP) \
- DECL_WEAK(DECL) = 1; \
- } \
- while (0)
+#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
/* Switch into a generic section. */
#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_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
/* 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
#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
do \
{ \
- register const unsigned char *_ascii_bytes = \
+ const unsigned char *_ascii_bytes = \
(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++) \
{ \
- register const unsigned char *p; \
+ const unsigned char *p; \
\
if (bytes_in_chunk >= 60) \
{ \
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) \
{ \
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
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