pe.h revision 132718
1/* Definitions of target machine for GNU compiler, for ARM with PE obj format. 2 Copyright (C) 1995, 1996, 1999, 2000, 2002, 2003 Free Software Foundation, Inc. 3 Contributed by Doug Evans (dje@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 GCC; 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/* 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 36/* Run-time Target Specification. */ 37#undef TARGET_VERSION 38#define TARGET_VERSION fputs (" (ARM/pe)", stderr) 39 40/* Get tree.c to declare a target-specific specialization of 41 merge_decl_attributes. */ 42#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 43 44/* Support the __declspec keyword by turning them into attributes. 45 We currently only support: naked, dllimport, and dllexport. 46 Note that the current way we do this may result in a collision with 47 predefined attributes later on. This can be solved by using one attribute, 48 say __declspec__, and passing args to it. The problem with that approach 49 is that args are not accumulated: each new appearance would clobber any 50 existing args. */ 51#undef SUBTARGET_CPP_SPEC 52#define SUBTARGET_CPP_SPEC "-D__pe__ -D__declspec(x)=__attribute__((x))" 53 54 55/* Experimental addition for pr 7885. 56 Ignore dllimport for functions. */ 57#define TARGET_FLAG_NOP_FUN (1 << 24) 58 59#undef TARGET_NOP_FUN_DLLIMPORT 60#define TARGET_NOP_FUN_DLLIMPORT (target_flags & TARGET_FLAG_NOP_FUN) 61 62#undef SUBTARGET_SWITCHES 63#define SUBTARGET_SWITCHES \ 64{ "nop-fun-dllimport", TARGET_FLAG_NOP_FUN, \ 65 N_("Ignore dllimport attribute for functions") }, \ 66{ "no-nop-fun-dllimport", - TARGET_FLAG_NOP_FUN, "" }, 67 68/* Defaulting to APCS-26 support is a legacy issue. It has been done 69 that way for a long time, so changing it will probably break some 70 people's worlds. Support for APCS-32 is now enabled as a multilib, 71 and at some point in the future APCS-32 may become the default. 72 Possibly when chips that support APCS-26 are no longer made. */ 73 74#undef TARGET_DEFAULT 75#define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT | TARGET_FLAG_NOP_FUN | ARM_FLAG_MMU_TRAPS) 76 77#undef MULTILIB_DEFAULTS 78#define MULTILIB_DEFAULTS \ 79 { "marm", "mlittle-endian", "msoft-float", "mapcs-26", "mno-thumb-interwork" } 80 81#undef WCHAR_TYPE 82#define WCHAR_TYPE "short unsigned int" 83#undef WCHAR_TYPE_SIZE 84#define WCHAR_TYPE_SIZE 16 85 86/* r11 is fixed. */ 87#undef SUBTARGET_CONDITIONAL_REGISTER_USAGE 88#define SUBTARGET_CONDITIONAL_REGISTER_USAGE \ 89 fixed_regs [11] = 1; \ 90 call_used_regs [11] = 1; 91 92 93/* Define this macro if in some cases global symbols from one translation 94 unit may not be bound to undefined symbols in another translation unit 95 without user intervention. For instance, under Microsoft Windows 96 symbols must be explicitly imported from shared libraries (DLLs). */ 97#define MULTIPLE_SYMBOL_SPACES 98 99#define TARGET_ASM_UNIQUE_SECTION arm_pe_unique_section 100 101#define SUPPORTS_ONE_ONLY 1 102 103/* Switch into a generic section. */ 104#undef TARGET_ASM_NAMED_SECTION 105#define TARGET_ASM_NAMED_SECTION default_pe_asm_named_section 106 107#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true 108 109/* Output a reference to a label. */ 110#undef ASM_OUTPUT_LABELREF 111#define ASM_OUTPUT_LABELREF(STREAM, NAME) \ 112 asm_fprintf (STREAM, "%U%s", arm_strip_name_encoding (NAME)) 113 114/* Output a function definition label. */ 115#undef ASM_DECLARE_FUNCTION_NAME 116#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \ 117 do \ 118 { \ 119 if (arm_dllexport_name_p (NAME)) \ 120 { \ 121 drectve_section (); \ 122 fprintf (STREAM, "\t.ascii \" -export:%s\"\n", \ 123 arm_strip_name_encoding (NAME)); \ 124 function_section (DECL); \ 125 } \ 126 ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL); \ 127 if (TARGET_THUMB) \ 128 fprintf (STREAM, "\t.code 16\n"); \ 129 ASM_OUTPUT_LABEL (STREAM, NAME); \ 130 } \ 131 while (0) 132 133/* Output a common block. */ 134#undef ASM_OUTPUT_COMMON 135#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \ 136 do \ 137 { \ 138 if (arm_dllexport_name_p (NAME)) \ 139 { \ 140 drectve_section (); \ 141 fprintf ((STREAM), "\t.ascii \" -export:%s\"\n",\ 142 arm_strip_name_encoding (NAME)); \ 143 } \ 144 if (! arm_dllimport_name_p (NAME)) \ 145 { \ 146 fprintf ((STREAM), "\t.comm\t"); \ 147 assemble_name ((STREAM), (NAME)); \ 148 asm_fprintf ((STREAM), ", %d\t%@ %d\n", \ 149 (int)(ROUNDED), (int)(SIZE)); \ 150 } \ 151 } \ 152 while (0) 153 154/* Output the label for an initialized variable. */ 155#undef ASM_DECLARE_OBJECT_NAME 156#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \ 157 do \ 158 { \ 159 if (arm_dllexport_name_p (NAME)) \ 160 { \ 161 enum in_section save_section = in_section; \ 162 drectve_section (); \ 163 fprintf (STREAM, "\t.ascii \" -export:%s\"\n",\ 164 arm_strip_name_encoding (NAME)); \ 165 switch_to_section (save_section, (DECL)); \ 166 } \ 167 ASM_OUTPUT_LABEL ((STREAM), (NAME)); \ 168 } \ 169 while (0) 170 171/* Support the ctors/dtors and other sections. */ 172 173#define DRECTVE_SECTION_ASM_OP "\t.section .drectve" 174 175/* A list of other sections which the compiler might be "in" at any 176 given time. */ 177 178#undef EXTRA_SECTIONS 179#define EXTRA_SECTIONS in_drectve 180 181/* A list of extra section function definitions. */ 182 183#undef EXTRA_SECTION_FUNCTIONS 184#define EXTRA_SECTION_FUNCTIONS \ 185 DRECTVE_SECTION_FUNCTION \ 186 SWITCH_TO_SECTION_FUNCTION 187 188#define DRECTVE_SECTION_FUNCTION \ 189void \ 190drectve_section (void) \ 191{ \ 192 if (in_section != in_drectve) \ 193 { \ 194 fprintf (asm_out_file, "%s\n", DRECTVE_SECTION_ASM_OP); \ 195 in_section = in_drectve; \ 196 } \ 197} 198 199/* Switch to SECTION (an `enum in_section'). 200 201 ??? This facility should be provided by GCC proper. 202 The problem is that we want to temporarily switch sections in 203 ASM_DECLARE_OBJECT_NAME and then switch back to the original section 204 afterwards. */ 205#define SWITCH_TO_SECTION_FUNCTION \ 206static void \ 207switch_to_section (enum in_section section, tree decl) \ 208{ \ 209 switch (section) \ 210 { \ 211 case in_text: text_section (); break; \ 212 case in_data: data_section (); break; \ 213 case in_named: named_section (decl, NULL, 0); break; \ 214 case in_readonly_data: readonly_data_section (); break; \ 215 case in_ctors: ctors_section (); break; \ 216 case in_dtors: dtors_section (); break; \ 217 case in_drectve: drectve_section (); break; \ 218 default: abort (); break; \ 219 } \ 220} 221 222