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  (ARM_FLAG_SOFT_FLOAT | 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 /* Define this macro if in some cases global symbols from one translation
  82    unit may not be bound to undefined symbols in another translation unit
  83    without user intervention.  For instance, under Microsoft Windows
  84    symbols must be explicitly imported from shared libraries (DLLs).  */
  85 #define MULTIPLE_SYMBOL_SPACES
  86
  87 #define TARGET_ASM_UNIQUE_SECTION arm_pe_unique_section
  88
  89 #define SUPPORTS_ONE_ONLY 1
  90
  91 /* Switch into a generic section.  */
  92 #undef  TARGET_ASM_NAMED_SECTION
  93 #define TARGET_ASM_NAMED_SECTION  default_pe_asm_named_section
  94 \f
  95 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
  96
  97 /* Output a reference to a label.  */
  98 #undef  ASM_OUTPUT_LABELREF
  99 #define ASM_OUTPUT_LABELREF(STREAM, NAME)  \
 100   asm_fprintf (STREAM, "%U%s", arm_strip_name_encoding (NAME))
 101
 102 /* Output a function definition label.  */
 103 #undef  ASM_DECLARE_FUNCTION_NAME
 104 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)           \
 105   do                                                            \
 106     {                                                           \
 107       if (arm_dllexport_name_p (NAME))                          \
 108         {                                                       \
 109           drectve_section ();                                   \
 110           fprintf (STREAM, "\t.ascii \" -export:%s\"\n",        \
 111                    arm_strip_name_encoding (NAME));             \
 112           function_section (DECL);                              \
 113         }                                                       \
 114       ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL);           \
 115       if (TARGET_THUMB)                                         \
 116         fprintf (STREAM, "\t.code 16\n");                       \
 117       ASM_OUTPUT_LABEL (STREAM, NAME);                          \
 118     }                                                           \
 119   while (0)
 120
 121 /* Output a common block.  */
 122 #undef  ASM_OUTPUT_COMMON
 123 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  \
 124   do                                                    \
 125     {                                                   \
 126       if (arm_dllexport_name_p (NAME))                  \
 127         {                                               \
 128           drectve_section ();                           \
 129           fprintf ((STREAM), "\t.ascii \" -export:%s\"\n",\
 130                    arm_strip_name_encoding (NAME));     \
 131         }                                               \
 132       if (! arm_dllimport_name_p (NAME))                \
 133         {                                               \
 134           fprintf ((STREAM), "\t.comm\t");              \
 135           assemble_name ((STREAM), (NAME));             \
 136           asm_fprintf ((STREAM), ", %d\t%@ %d\n",       \
 137                    (int)(ROUNDED), (int)(SIZE));        \
 138         }                                               \
 139     }                                                   \
 140   while (0)
 141
 142 /* Output the label for an initialized variable.  */
 143 #undef  ASM_DECLARE_OBJECT_NAME
 144 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)     \
 145   do                                                    \
 146     {                                                   \
 147       if (arm_dllexport_name_p (NAME))                  \
 148         {                                               \
 149           enum in_section save_section = in_section;    \
 150           drectve_section ();                           \
 151           fprintf (STREAM, "\t.ascii \" -export:%s\"\n",\
 152                    arm_strip_name_encoding (NAME));     \
 153           switch_to_section (save_section, (DECL));     \
 154         }                                               \
 155       ASM_OUTPUT_LABEL ((STREAM), (NAME));              \
 156     }                                                   \
 157   while (0)
 158 \f
 159 /* Support the ctors/dtors and other sections.  */
 160
 161 #define DRECTVE_SECTION_ASM_OP  "\t.section .drectve"
 162
 163 /* A list of other sections which the compiler might be "in" at any
 164    given time.  */
 165
 166 #undef  EXTRA_SECTIONS
 167 #define EXTRA_SECTIONS in_drectve
 168
 169 /* A list of extra section function definitions.  */
 170
 171 #undef  EXTRA_SECTION_FUNCTIONS
 172 #define EXTRA_SECTION_FUNCTIONS \
 173   DRECTVE_SECTION_FUNCTION      \
 174   SWITCH_TO_SECTION_FUNCTION
 175
 176 #define DRECTVE_SECTION_FUNCTION \
 177 void                                                                    \
 178 drectve_section (void)                                                  \
 179 {                                                                       \
 180   if (in_section != in_drectve)                                         \
 181     {                                                                   \
 182       fprintf (asm_out_file, "%s\n", DRECTVE_SECTION_ASM_OP);           \
 183       in_section = in_drectve;                                          \
 184     }                                                                   \
 185 }
 186
 187 /* Switch to SECTION (an `enum in_section').
 188
 189    ??? This facility should be provided by GCC proper.
 190    The problem is that we want to temporarily switch sections in
 191    ASM_DECLARE_OBJECT_NAME and then switch back to the original section
 192    afterwards.  */
 193 #define SWITCH_TO_SECTION_FUNCTION                              \
 194 static void                                                     \
 195 switch_to_section (enum in_section section, tree decl)          \
 196 {                                                               \
 197   switch (section)                                              \
 198     {                                                           \
 199       case in_text: text_section (); break;                     \
 200       case in_data: data_section (); break;                     \
 201       case in_named: named_section (decl, NULL, 0); break;      \
 202       case in_readonly_data: readonly_data_section (); break;   \
 203       case in_ctors: ctors_section (); break;                   \
 204       case in_dtors: dtors_section (); break;                   \
 205       case in_drectve: drectve_section (); break;               \
 206       default: abort (); break;                                 \
 207     }                                                           \
 208 }
 209