gcc/config/arm/unknown-elf.h

   1 /* Definitions for non-Linux based ARM systems using ELF
   2    Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   3    Contributed by Catherine Moore <clm@cygnus.com>
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 2, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; 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 /* elfos.h should have already been included.  Now just override
  23    any conflicting definitions and add any extras.  */
  24
  25 /* Run-time Target Specification.  */
  26 #ifndef TARGET_VERSION
  27 #define TARGET_VERSION  fputs (" (ARM/ELF)", stderr);
  28 #endif
  29
  30 /* Default to using APCS-32 and software floating point.  */
  31 #ifndef TARGET_DEFAULT
  32 #define TARGET_DEFAULT  (ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32 | ARM_FLAG_APCS_FRAME)
  33 #endif
  34
  35 /* Now we define the strings used to build the spec file.  */
  36 #undef  STARTFILE_SPEC
  37 #define STARTFILE_SPEC  " crti%O%s crtbegin%O%s crt0%O%s"
  38
  39 #undef  ENDFILE_SPEC
  40 #define ENDFILE_SPEC    "crtend%O%s crtn%O%s"
  41
  42 /* The __USES_INITFINI__ define is tested in newlib/libc/sys/arm/crt0.S
  43    to see if it needs to invoked _init() and _fini().  */
  44 #undef  SUBTARGET_CPP_SPEC
  45 #define SUBTARGET_CPP_SPEC  "-D__ELF__ -D__USES_INITFINI__"
  46
  47 #undef  PREFERRED_DEBUGGING_TYPE
  48 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  49
  50 /* Return a nonzero value if DECL has a section attribute.  */
  51 #define IN_NAMED_SECTION(DECL)                                          \
  52   ((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL)  \
  53    && DECL_SECTION_NAME (DECL) != NULL_TREE)
  54
  55 #undef  ASM_OUTPUT_ALIGNED_BSS
  56 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
  57   do                                                                    \
  58     {                                                                   \
  59       if (IN_NAMED_SECTION (DECL))                                      \
  60         named_section (DECL, NULL, 0);                                  \
  61       else                                                              \
  62         bss_section ();                                                 \
  63                                                                         \
  64       (*targetm.asm_out.globalize_label) (FILE, NAME);                  \
  65                                                                         \
  66       ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT));      \
  67                                                                         \
  68       last_assemble_variable_decl = DECL;                               \
  69       ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL);                       \
  70       ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1);                          \
  71     }                                                                   \
  72   while (0)
  73
  74 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
  75 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
  76   do                                                                    \
  77     {                                                                   \
  78       if ((DECL) != NULL && IN_NAMED_SECTION (DECL))                    \
  79         named_section (DECL, NULL, 0);                                  \
  80       else                                                              \
  81         bss_section ();                                                 \
  82                                                                         \
  83       ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT));      \
  84       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
  85       fprintf (FILE, "\t.space\t%d\n", SIZE ? SIZE : 1);                \
  86     }                                                                   \
  87   while (0)
  88
  89 #ifndef CPP_APCS_PC_DEFAULT_SPEC
  90 #define CPP_APCS_PC_DEFAULT_SPEC        "-D__APCS_32__"
  91 #endif
  92
  93 #ifndef SUBTARGET_CPU_DEFAULT
  94 #define SUBTARGET_CPU_DEFAULT           TARGET_CPU_arm7tdmi
  95 #endif
  96