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, 2005, 2007, 2011
   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 3, 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 COPYING3.  If not see
  20    <http://www.gnu.org/licenses/>.  */
  21
  22 /* Enable PE specific code.  */
  23 #define ARM_PE          1
  24
  25 #define ARM_PE_FLAG_CHAR '@'
  26
  27 /* Ensure that @x. will be stripped from the function name.  */
  28 #undef SUBTARGET_NAME_ENCODING_LENGTHS
  29 #define SUBTARGET_NAME_ENCODING_LENGTHS  \
  30   case ARM_PE_FLAG_CHAR: return 3;
  31
  32 #undef  USER_LABEL_PREFIX
  33 #define USER_LABEL_PREFIX "_"
  34
  35 \f
  36 /* Run-time Target Specification.  */
  37
  38 /* Get tree.c to declare a target-specific specialization of
  39    merge_decl_attributes.  */
  40 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1
  41
  42 #undef  SUBTARGET_CPP_SPEC
  43 #define SUBTARGET_CPP_SPEC "-D__pe__"
  44
  45 #undef  TARGET_DEFAULT
  46 #define TARGET_DEFAULT  (MASK_NOP_FUN_DLLIMPORT)
  47
  48 #undef  MULTILIB_DEFAULTS
  49 #define MULTILIB_DEFAULTS \
  50   { "marm", "mlittle-endian", "mfloat-abi=soft", "mno-thumb-interwork" }
  51 \f
  52 #undef  WCHAR_TYPE
  53 #define WCHAR_TYPE      "short unsigned int"
  54 #undef  WCHAR_TYPE_SIZE
  55 #define WCHAR_TYPE_SIZE 16
  56
  57 /* r11 is fixed.  */
  58 #undef  SUBTARGET_CONDITIONAL_REGISTER_USAGE
  59 #define SUBTARGET_CONDITIONAL_REGISTER_USAGE \
  60   fixed_regs [11] = 1; \
  61   call_used_regs [11] = 1;
  62
  63 \f
  64 /* PE/COFF uses explicit import from shared libraries.  */
  65 #define MULTIPLE_SYMBOL_SPACES 1
  66
  67 #define TARGET_ASM_UNIQUE_SECTION arm_pe_unique_section
  68 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
  69
  70 #define SUPPORTS_ONE_ONLY 1
  71
  72 /* Switch into a generic section.  */
  73 #undef  TARGET_ASM_NAMED_SECTION
  74 #define TARGET_ASM_NAMED_SECTION  default_pe_asm_named_section
  75 \f
  76 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
  77
  78 /* Output a reference to a label.  */
  79 #undef  ASM_OUTPUT_LABELREF
  80 #define ASM_OUTPUT_LABELREF(STREAM, NAME)  \
  81   asm_fprintf (STREAM, "%U%s", arm_strip_name_encoding (NAME))
  82
  83 /* Output a function definition label.  */
  84 #undef  ASM_DECLARE_FUNCTION_NAME
  85 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)           \
  86   do                                                            \
  87     {                                                           \
  88       if (arm_dllexport_name_p (NAME))                          \
  89         {                                                       \
  90           drectve_section ();                                   \
  91           fprintf (STREAM, "\t.ascii \" -export:%s\"\n",        \
  92                    arm_strip_name_encoding (NAME));             \
  93           switch_to_section (function_section (DECL));          \
  94         }                                                       \
  95       ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL);           \
  96       if (TARGET_THUMB)                                         \
  97         fprintf (STREAM, "\t.code 16\n");                       \
  98       ASM_OUTPUT_LABEL (STREAM, NAME);                          \
  99     }                                                           \
 100   while (0)
 101
 102 /* Output a common block.  */
 103 #undef  ASM_OUTPUT_COMMON
 104 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  \
 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         }                                               \
 113       if (! arm_dllimport_name_p (NAME))                \
 114         {                                               \
 115           fprintf ((STREAM), "\t.comm\t");              \
 116           assemble_name ((STREAM), (NAME));             \
 117           asm_fprintf ((STREAM), ", %d\t%@ %d\n",       \
 118                    (int)(ROUNDED), (int)(SIZE));        \
 119         }                                               \
 120     }                                                   \
 121   while (0)
 122
 123 /* Output the label for an initialized variable.  */
 124 #undef  ASM_DECLARE_OBJECT_NAME
 125 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)     \
 126   do                                                    \
 127     {                                                   \
 128       if (arm_dllexport_name_p (NAME))                  \
 129         {                                               \
 130           section *save_section = in_section;           \
 131           drectve_section ();                           \
 132           fprintf (STREAM, "\t.ascii \" -export:%s\"\n",\
 133                    arm_strip_name_encoding (NAME));     \
 134           switch_to_section (save_section);             \
 135         }                                               \
 136       ASM_OUTPUT_LABEL ((STREAM), (NAME));              \
 137     }                                                   \
 138   while (0)
 139 \f
 140 /* Support the ctors/dtors and other sections.  */
 141
 142 #define DRECTVE_SECTION_ASM_OP  "\t.section .drectve"
 143
 144 #define drectve_section() \
 145   (fprintf (asm_out_file, "%s\n", DRECTVE_SECTION_ASM_OP), \
 146    in_section = NULL)