gcc/config/mips/elf.h

/* Definitions of target machine for GNU compiler.  MIPS R3000 version with
   GOFAST floating point library.
   Copyright (C) 1994, 1997, 1999, 2000, 2002, 2003, 2004
   Free Software Foundation, Inc.

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)
any later version.

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

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.  */

/* 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'.  */

#undef  MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT (32768*8)

/* Switch into a generic section.  */
#undef  TARGET_ASM_NAMED_SECTION
#define TARGET_ASM_NAMED_SECTION  default_elf_asm_named_section

/* The following macro defines the format used to output the second
   operand of the .type assembler directive.  Different svr4 assemblers
   expect various different forms for this operand.  The one given here
   is just a default.  You may need to override it in your machine-
   specific tm.h file (depending upon the particulars of your assembler).  */

#define TYPE_OPERAND_FMT        "@%s"

/* Define the strings used for the special svr4 .type and .size directives.
   These strings generally do not vary from one system running svr4 to
   another, but if a given system (e.g. m88k running svr) needs to use
   different pseudo-op names for these, they may be overridden in the
   file which includes this one.  */

#undef TYPE_ASM_OP
#undef SIZE_ASM_OP
#define TYPE_ASM_OP	"\t.type\t"
#define SIZE_ASM_OP	"\t.size\t"

/* If defined, a C expression whose value is a string containing the
   assembler operation to identify the following data as
   uninitialized global data.  If not defined, and neither
   `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
   uninitialized global data will be output in the data section if
   `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
   used.  */

#ifndef BSS_SECTION_ASM_OP
#define BSS_SECTION_ASM_OP	"\t.section\t.bss"
#endif

#ifndef ASM_OUTPUT_ALIGNED_BSS
#define ASM_OUTPUT_ALIGNED_BSS mips_output_aligned_bss
#endif

#undef ASM_DECLARE_OBJECT_NAME
#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name

#undef ASM_FINISH_DECLARE_OBJECT
#define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object

#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)                            \
 do { fputc ( '\t', FILE);                                            \
      assemble_name (FILE, LABEL1);                                   \
      fputs ( " = ", FILE);                                           \
      assemble_name (FILE, LABEL2);                                   \
      fputc ( '\n', FILE);                                            \
 } while (0)

/* Note about .weak vs. .weakext
   The mips native assemblers support .weakext, but not .weak.
   mips-elf gas supports .weak, but not .weakext.
   mips-elf gas has been changed to support both .weak and .weakext,
   but until that support is generally available, the 'if' below
   should serve.  */

#undef  ASM_WEAKEN_LABEL
#define ASM_WEAKEN_LABEL(FILE,NAME) ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,0)
#define ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,VALUE)	\
 do {						\
  if (TARGET_GAS)                               \
      fputs ("\t.weak\t", FILE);		\
  else                                          \
      fputs ("\t.weakext\t", FILE);		\
  assemble_name (FILE, NAME);			\
  if (VALUE)					\
    {						\
      fputc (' ', FILE);			\
      assemble_name (FILE, VALUE);		\
    }						\
  fputc ('\n', FILE);				\
 } while (0)

#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)

/* On elf, we *do* have support for the .init and .fini sections, and we
   can put stuff in there to be executed before and after `main'.  We let
   crtstuff.c and other files know this by defining the following symbols.
   The definitions say how to change sections to the .init and .fini
   sections.  This is the same for all known elf assemblers.  */

#undef  INIT_SECTION_ASM_OP
#define INIT_SECTION_ASM_OP     "\t.section\t.init"
#undef  FINI_SECTION_ASM_OP
#define FINI_SECTION_ASM_OP     "\t.section\t.fini"

/* Don't set the target flags, this is done by the linker script */
#undef  LIB_SPEC
#define LIB_SPEC ""

#undef  STARTFILE_SPEC
#define STARTFILE_SPEC "crti%O%s crtbegin%O%s"

#undef  ENDFILE_SPEC
#define ENDFILE_SPEC "crtend%O%s crtn%O%s"

/* We support #pragma.  */
#define HANDLE_SYSV_PRAGMA 1