gcc/config/mcore/mcore-elf.h

   1 /* Definitions of MCore target.
   2    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004, 2007
   3    Free Software Foundation, Inc.
   4    Contributed by Cygnus Solutions.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef __MCORE_ELF_H__
  23 #define __MCORE_ELF_H__
  24
  25 /* Run-time Target Specification.  */
  26 #define TARGET_VERSION fputs (" (Motorola MCORE/elf)", stderr)
  27
  28 /* Use DWARF2 debugging info.  */
  29 #define DWARF2_DEBUGGING_INFO 1
  30
  31 #undef  PREFERRED_DEBUGGING_TYPE
  32 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  33
  34 #define MCORE_EXPORT_NAME(STREAM, NAME)                 \
  35   do                                                    \
  36     {                                                   \
  37       fprintf (STREAM, "\t.section .exports\n");        \
  38       fprintf (STREAM, "\t.ascii \" -export:%s\"\n",    \
  39                (* targetm.strip_name_encoding) (NAME)); \
  40       in_section = NULL;                                \
  41     }                                                   \
  42   while (0);
  43
  44 /* Write the extra assembler code needed to declare a function properly.
  45    Some svr4 assemblers need to also have something extra said about the
  46    function's return value.  We allow for that here.  */
  47 #undef  ASM_DECLARE_FUNCTION_NAME
  48 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
  49   do                                                            \
  50     {                                                           \
  51       if (mcore_dllexport_name_p (NAME))                        \
  52         {                                                       \
  53           MCORE_EXPORT_NAME (FILE, NAME);                       \
  54           switch_to_section (function_section (DECL));          \
  55         }                                                       \
  56       ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");       \
  57       ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));            \
  58       ASM_OUTPUT_LABEL (FILE, NAME);                            \
  59     }                                                           \
  60   while (0)
  61
  62 /* Write the extra assembler code needed to declare an object properly.  */
  63 #undef  ASM_DECLARE_OBJECT_NAME
  64 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)               \
  65   do                                                            \
  66     {                                                           \
  67       HOST_WIDE_INT size;                                       \
  68       if (mcore_dllexport_name_p (NAME))                        \
  69         {                                                       \
  70           section *save_section = in_section;                   \
  71           MCORE_EXPORT_NAME (FILE, NAME);                       \
  72           switch_to_section (save_section);                     \
  73         }                                                       \
  74       ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");         \
  75       size_directive_output = 0;                                \
  76       if (!flag_inhibit_size_directive && DECL_SIZE (DECL))     \
  77         {                                                       \
  78           size_directive_output = 1;                            \
  79           size = int_size_in_bytes (TREE_TYPE (DECL));          \
  80           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);         \
  81         }                                                       \
  82       ASM_OUTPUT_LABEL(FILE, NAME);                             \
  83     }                                                           \
  84   while (0)
  85
  86 /* Output the size directive for a decl in rest_of_decl_compilation
  87    in the case where we did not do so before the initializer.
  88    Once we find the error_mark_node, we know that the value of
  89    size_directive_output was set
  90    by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */
  91 #undef  ASM_FINISH_DECLARE_OBJECT
  92 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
  93   do                                                                     \
  94     {                                                                    \
  95       const char * name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);           \
  96       HOST_WIDE_INT size;                                                \
  97       if (!flag_inhibit_size_directive && DECL_SIZE (DECL)               \
  98           && ! AT_END && TOP_LEVEL                                       \
  99           && DECL_INITIAL (DECL) == error_mark_node                      \
 100           && !size_directive_output)                                     \
 101         {                                                                \
 102           size_directive_output = 1;                                     \
 103           size = int_size_in_bytes (TREE_TYPE (DECL));                   \
 104           ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                  \
 105         }                                                                \
 106     }                                                                    \
 107   while (0)
 108
 109
 110 #undef  STARTFILE_SPEC
 111 #define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"
 112
 113 /* Include the OS stub library, so that the code can be simulated.
 114    This is not the right way to do this.  Ideally this kind of thing
 115    should be done in the linker script - but I have not worked out how
 116    to specify the location of a linker script in a gcc command line yet.  */
 117 #undef  ENDFILE_SPEC
 118 #define ENDFILE_SPEC  "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s"
 119
 120 /* The subroutine calls in the .init and .fini sections create literal
 121    pools which must be jumped around....  */
 122 #define FORCE_CODE_SECTION_ALIGN        asm ("br 1f ; .literals ; 1:");
 123
 124 #undef  CTORS_SECTION_ASM_OP
 125 #define CTORS_SECTION_ASM_OP    "\t.section\t.ctors,\"aw\""
 126 #undef  DTORS_SECTION_ASM_OP
 127 #define DTORS_SECTION_ASM_OP    "\t.section\t.dtors,\"aw\""
 128
 129 #endif /* __MCORE_ELF_H__ */