gcc/config/arm/pe.h

   1 /* Definitions of target machine for GNU compiler, for ARM with PE obj format.
   2    Copyright (C) 1995, 1996, 1999, 2000, 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4    Contributed by Doug Evans (dje@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 GCC; 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 /* Enable PE specific code.  */
  24 #define ARM_PE          1
  25
  26 #define ARM_PE_FLAG_CHAR '@'
  27
  28 /* Ensure that @x. will be stripped from the function name.  */
  29 #undef SUBTARGET_NAME_ENCODING_LENGTHS
  30 #define SUBTARGET_NAME_ENCODING_LENGTHS  \
  31   case ARM_PE_FLAG_CHAR: return 3;
  32
  33 #undef  USER_LABEL_PREFIX
  34 #define USER_LABEL_PREFIX "_"
  35
  36 \f
  37 /* Run-time Target Specification.  */
  38 #undef  TARGET_VERSION
  39 #define TARGET_VERSION fputs (" (ARM/pe)", stderr)
  40
  41 /* Get tree.c to declare a target-specific specialization of
  42    merge_decl_attributes.  */
  43 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1
  44
  45 #undef  SUBTARGET_CPP_SPEC
  46 #define SUBTARGET_CPP_SPEC "-D__pe__"
  47
  48
  49 /* Experimental addition for pr 7885.
  50    Ignore dllimport for functions.  */
  51 #define TARGET_FLAG_NOP_FUN     (1 << 24)
  52
  53 #undef  TARGET_NOP_FUN_DLLIMPORT
  54 #define TARGET_NOP_FUN_DLLIMPORT (target_flags & TARGET_FLAG_NOP_FUN)
  55
  56 #undef  SUBTARGET_SWITCHES
  57 #define SUBTARGET_SWITCHES                                      \
  58 { "nop-fun-dllimport",            TARGET_FLAG_NOP_FUN,          \
  59   N_("Ignore dllimport attribute for functions") },             \
  60 { "no-nop-fun-dllimport",       - TARGET_FLAG_NOP_FUN, "" },
  61
  62 #undef  TARGET_DEFAULT
  63 #define TARGET_DEFAULT  (TARGET_FLAG_NOP_FUN)
  64
  65 #undef  MULTILIB_DEFAULTS
  66 #define MULTILIB_DEFAULTS \
  67   { "marm", "mlittle-endian", "msoft-float", "mno-thumb-interwork" }
  68 \f
  69 #undef  WCHAR_TYPE
  70 #define WCHAR_TYPE      "short unsigned int"
  71 #undef  WCHAR_TYPE_SIZE
  72 #define WCHAR_TYPE_SIZE 16
  73
  74 /* r11 is fixed.  */
  75 #undef  SUBTARGET_CONDITIONAL_REGISTER_USAGE
  76 #define SUBTARGET_CONDITIONAL_REGISTER_USAGE \
  77   fixed_regs [11] = 1; \
  78   call_used_regs [11] = 1;
  79
  80 \f
  81 /* PE/COFF uses explicit import from shared libraries.  */
  82 #define MULTIPLE_SYMBOL_SPACES 1
  83
  84 #define TARGET_ASM_UNIQUE_SECTION arm_pe_unique_section
  85 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
  86
  87 #define SUPPORTS_ONE_ONLY 1
  88
  89 /* Switch into a generic section.  */
  90 #undef  TARGET_ASM_NAMED_SECTION
  91 #define TARGET_ASM_NAMED_SECTION  default_pe_asm_named_section
  92 \f
  93 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
  94
  95 /* Output a reference to a label.  */
  96 #undef  ASM_OUTPUT_LABELREF
  97 #define ASM_OUTPUT_LABELREF(STREAM, NAME)  \
  98   asm_fprintf (STREAM, "%U%s", arm_strip_name_encoding (NAME))
  99
 100 /* Output a function definition label.  */
 101 #undef  ASM_DECLARE_FUNCTION_NAME
 102 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)           \
 103   do                                                            \
 104     {                                                           \
 105       if (arm_dllexport_name_p (NAME))                          \
 106         {                                                       \
 107           drectve_section ();                                   \
 108           fprintf (STREAM, "\t.ascii \" -export:%s\"\n",        \
 109                    arm_strip_name_encoding (NAME));             \
 110           function_section (DECL);                              \
 111         }                                                       \
 112       ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL);           \
 113       if (TARGET_THUMB)                                         \
 114         fprintf (STREAM, "\t.code 16\n");                       \
 115       ASM_OUTPUT_LABEL (STREAM, NAME);                          \
 116     }                                                           \
 117   while (0)
 118
 119 /* Output a common block.  */
 120 #undef  ASM_OUTPUT_COMMON
 121 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  \
 122   do                                                    \
 123     {                                                   \
 124       if (arm_dllexport_name_p (NAME))                  \
 125         {                                               \
 126           drectve_section ();                           \
 127           fprintf ((STREAM), "\t.ascii \" -export:%s\"\n",\
 128                    arm_strip_name_encoding (NAME));     \
 129         }                                               \
 130       if (! arm_dllimport_name_p (NAME))                \
 131         {                                               \
 132           fprintf ((STREAM), "\t.comm\t");              \
 133           assemble_name ((STREAM), (NAME));             \
 134           asm_fprintf ((STREAM), ", %d\t%@ %d\n",       \
 135                    (int)(ROUNDED), (int)(SIZE));        \
 136         }                                               \
 137     }                                                   \
 138   while (0)
 139
 140 /* Output the label for an initialized variable.  */
 141 #undef  ASM_DECLARE_OBJECT_NAME
 142 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)     \
 143   do                                                    \
 144     {                                                   \
 145       if (arm_dllexport_name_p (NAME))                  \
 146         {                                               \
 147           enum in_section save_section = in_section;    \
 148           drectve_section ();                           \
 149           fprintf (STREAM, "\t.ascii \" -export:%s\"\n",\
 150                    arm_strip_name_encoding (NAME));     \
 151           switch_to_section (save_section, (DECL));     \
 152         }                                               \
 153       ASM_OUTPUT_LABEL ((STREAM), (NAME));              \
 154     }                                                   \
 155   while (0)
 156 \f
 157 /* Support the ctors/dtors and other sections.  */
 158
 159 #define DRECTVE_SECTION_ASM_OP  "\t.section .drectve"
 160
 161 /* A list of other sections which the compiler might be "in" at any
 162    given time.  */
 163
 164 #undef  EXTRA_SECTIONS
 165 #define EXTRA_SECTIONS in_drectve
 166
 167 /* A list of extra section function definitions.  */
 168
 169 #undef  EXTRA_SECTION_FUNCTIONS
 170 #define EXTRA_SECTION_FUNCTIONS \
 171   DRECTVE_SECTION_FUNCTION      \
 172   SWITCH_TO_SECTION_FUNCTION
 173
 174 #define DRECTVE_SECTION_FUNCTION \
 175 void                                                                    \
 176 drectve_section (void)                                                  \
 177 {                                                                       \
 178   if (in_section != in_drectve)                                         \
 179     {                                                                   \
 180       fprintf (asm_out_file, "%s\n", DRECTVE_SECTION_ASM_OP);           \
 181       in_section = in_drectve;                                          \
 182     }                                                                   \
 183 }
 184
 185 /* Switch to SECTION (an `enum in_section').
 186
 187    ??? This facility should be provided by GCC proper.
 188    The problem is that we want to temporarily switch sections in
 189    ASM_DECLARE_OBJECT_NAME and then switch back to the original section
 190    afterwards.  */
 191 #define SWITCH_TO_SECTION_FUNCTION                              \
 192 static void                                                     \
 193 switch_to_section (enum in_section section, tree decl)          \
 194 {                                                               \
 195   switch (section)                                              \
 196     {                                                           \
 197       case in_text: text_section (); break;                     \
 198       case in_unlikely_executed_text: unlikely_text_section (); break; \
 199       case in_data: data_section (); break;                     \
 200       case in_named: named_section (decl, NULL, 0); break;      \
 201       case in_readonly_data: readonly_data_section (); break;   \
 202       case in_ctors: ctors_section (); break;                   \
 203       case in_dtors: dtors_section (); break;                   \
 204       case in_drectve: drectve_section (); break;               \
 205       default: abort (); break;                                 \
 206     }                                                           \
 207 }
 208