gcc/config/mips/elf64.h

   1 /* Definitions of target machine for GNU compiler.  MIPS R4000 version with
   2    GOFAST floating point library.
   3    Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #define OBJECT_FORMAT_ELF
  23
  24 /* Default to -mips3.  */
  25 #define TARGET_DEFAULT MASK_FLOAT64|MASK_64BIT
  26 #define MIPS_ISA_DEFAULT 3
  27
  28 #ifndef MULTILIB_DEFAULTS
  29 #ifndef TARGET_ENDIAN_DEFAULT
  30 #define MULTILIB_DEFAULTS { "EB", "mips3" }
  31 #else
  32 #define MULTILIB_DEFAULTS { "EL", "mips3" }
  33 #endif
  34 #endif
  35
  36 /* Until we figure out what MIPS ELF targets normally use, just do
  37    stabs in ELF.  */
  38 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  39
  40 #include "mips/mips.h"
  41
  42 #undef CPP_PREDEFINES
  43 #define CPP_PREDEFINES "-Dmips -DMIPSEB -DR4000 -D_mips -D_MIPSEB -D_R4000"
  44
  45 /* I would rather put this in CPP_PREDEFINES, but the gcc driver
  46    doesn't handle -U options in CPP_PREDEFINES.  */
  47 #undef SUBTARGET_CPP_SPEC
  48 #define SUBTARGET_CPP_SPEC "\
  49 %{!mips1:%{!mips2:-U__mips -D__mips=3 -D__mips64}}"
  50
  51 /* Use memcpy, et. al., rather than bcopy.  */
  52 #define TARGET_MEM_FUNCTIONS
  53
  54 /* US Software GOFAST library support.  */
  55 #include "gofast.h"
  56 #define INIT_TARGET_OPTABS INIT_GOFAST_OPTABS
  57
  58 /* Biggest alignment supported by the object file format of this
  59    machine.  Use this macro to limit the alignment which can be
  60    specified using the `__attribute__ ((aligned (N)))' construct.  If
  61    not defined, the default value is `BIGGEST_ALIGNMENT'.  */
  62
  63 #define MAX_OFILE_ALIGNMENT (32768*8)
  64
  65 /* We need to use .esize and .etype instead of .size and .type to
  66    avoid conflicting with ELF directives.  */
  67 #undef PUT_SDB_SIZE
  68 #define PUT_SDB_SIZE(a)                                 \
  69 do {                                                    \
  70   extern FILE *asm_out_text_file;                       \
  71   fprintf (asm_out_text_file, "\t.esize\t%d;", (a));    \
  72 } while (0)
  73
  74 #undef PUT_SDB_TYPE
  75 #define PUT_SDB_TYPE(a)                                 \
  76 do {                                                    \
  77   extern FILE *asm_out_text_file;                       \
  78   fprintf (asm_out_text_file, "\t.etype\t0x%x;", (a));  \
  79 } while (0)
  80
  81 /* A C statement to output something to the assembler file to switch to section
  82    NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
  83    NULL_TREE.  Some target formats do not support arbitrary sections.  Do not
  84    define this macro in such cases.  */
  85
  86 #define ASM_OUTPUT_SECTION_NAME(F, DECL, NAME, RELOC) \
  87 do {                                                            \
  88   extern FILE *asm_out_text_file;                               \
  89   if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL)              \
  90     fprintf (asm_out_text_file, "\t.section %s,\"ax\",@progbits\n", (NAME)); \
  91   else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC))       \
  92     fprintf (F, "\t.section %s,\"a\",@progbits\n", (NAME));     \
  93   else                                                          \
  94     fprintf (F, "\t.section %s,\"aw\",@progbits\n", (NAME));    \
  95 } while (0)