gcc/config/arm/unknown-elf.h

   1 /* Definitions for non-Linux based ARM systems using ELF
   2    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4    Contributed by Catherine Moore <clm@cygnus.com>
   5
   6    This file is part of GCC.
   7
   8    GCC is free software; you can redistribute it and/or modify it
   9    under the terms of the GNU General Public License as published
  10    by the Free Software Foundation; either version 2, or (at your
  11    option) any later version.
  12
  13    GCC is distributed in the hope that it will be useful, but WITHOUT
  14    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  16    License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; see the file COPYING.  If not, write to
  20    the Free Software Foundation, 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 /* elfos.h should have already been included.  Now just override
  24    any conflicting definitions and add any extras.  */
  25
  26 /* Run-time Target Specification.  */
  27 #ifndef TARGET_VERSION
  28 #define TARGET_VERSION  fputs (" (ARM/ELF)", stderr);
  29 #endif
  30
  31 /* Default to using software floating point.  */
  32 #ifndef TARGET_DEFAULT
  33 #define TARGET_DEFAULT  (0)
  34 #endif
  35
  36 /* Now we define the strings used to build the spec file.  */
  37 #undef  STARTFILE_SPEC
  38 #define STARTFILE_SPEC  " crti%O%s crtbegin%O%s crt0%O%s"
  39
  40 #undef  ENDFILE_SPEC
  41 #define ENDFILE_SPEC    "crtend%O%s crtn%O%s"
  42
  43 /* The __USES_INITFINI__ define is tested in newlib/libc/sys/arm/crt0.S
  44    to see if it needs to invoked _init() and _fini().  */
  45 #undef  SUBTARGET_CPP_SPEC
  46 #define SUBTARGET_CPP_SPEC  "-D__USES_INITFINI__"
  47
  48 #undef  PREFERRED_DEBUGGING_TYPE
  49 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  50
  51 /* Return a nonzero value if DECL has a section attribute.  */
  52 #define IN_NAMED_SECTION(DECL)                                          \
  53   ((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL)  \
  54    && DECL_SECTION_NAME (DECL) != NULL_TREE)
  55
  56 #undef  ASM_OUTPUT_ALIGNED_BSS
  57 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
  58   do                                                                    \
  59     {                                                                   \
  60       if (IN_NAMED_SECTION (DECL))                                      \
  61         named_section (DECL, NULL, 0);                                  \
  62       else                                                              \
  63         bss_section ();                                                 \
  64                                                                         \
  65       ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT));      \
  66                                                                         \
  67       last_assemble_variable_decl = DECL;                               \
  68       ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL);                       \
  69       ASM_OUTPUT_SKIP (FILE, SIZE ? (int)(SIZE) : 1);                   \
  70     }                                                                   \
  71   while (0)
  72
  73 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
  74 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
  75   do                                                                    \
  76     {                                                                   \
  77       if ((DECL) != NULL && IN_NAMED_SECTION (DECL))                    \
  78         named_section (DECL, NULL, 0);                                  \
  79       else                                                              \
  80         bss_section ();                                                 \
  81                                                                         \
  82       ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT));      \
  83       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
  84       fprintf (FILE, "\t.space\t%d\n", SIZE ? (int)(SIZE) : 1);         \
  85     }                                                                   \
  86   while (0)
  87
  88 #ifndef SUBTARGET_CPU_DEFAULT
  89 #define SUBTARGET_CPU_DEFAULT           TARGET_CPU_arm7tdmi
  90 #endif
  91