gcc/config/rs6000/win-nt.h

   1 /* Definitions of target machine for GNU compiler, for PowerPC
   2    running Windows/NT.
   3    Copyright (C) 1995 Free Software Foundation, Inc.
   4    Contributed by Cygnus Support.
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC 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 2, or (at your option)
  11 any later version.
  12
  13 GNU CC 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 GNU CC; 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 /* Say this is Windows/NT for the other config files.  */
  24 #define WINDOWS_NT 1
  25 #define COFF_WITH_PE 1
  26
  27 /* Default ABI to compile code for */
  28 #define DEFAULT_ABI ABI_NT
  29
  30 #include "rs6000/powerpc.h"
  31
  32 /* Pseudo target that we can test in the md file.  */
  33 #undef  TARGET_WINDOWS_NT
  34 #define TARGET_WINDOWS_NT 1
  35
  36 #undef  CPP_PREDEFINES
  37 #define CPP_PREDEFINES "-DWIN32 -D_WIN32 \
  38   -DWINNT -D__STDC__=0 -DALMOST_STDC \
  39   -D_POWER -D_ARCH_PPC -D__PPC__ -Asystem(winnt) -Acpu(powerpc) -Amachine(powerpc)"
  40
  41 #if 0
  42 #include "winnt/win-nt.h"
  43 #endif
  44
  45 #undef  LIB_SPEC
  46 #define LIB_SPEC "%{mwindows:-subsystem:windows -entry:WinMainCRTStartup \
  47   USER32.LIB GDI32.LIB COMDLG32.LIB WINSPOOL.LIB} \
  48  %{!mwindows:-subsystem console -e mainCRTStartup} \
  49  %{mcrtmt:LIBCMT.LIB KERNEL32.LIB} %{!mcrtmt:-lkernel32 -lcygwin} \
  50  %{v}"
  51
  52 #undef  LINK_SPEC
  53 #define LINK_SPEC "%{v:-V}"
  54
  55 /* Allow switches specified in LIB_SPEC, but don't do anything with them
  56    in the compiler.  */
  57 #undef  SUBTARGET_SWITCHES
  58 #define SUBTARGET_SWITCHES      \
  59    { "windows", 0 },            \
  60    { "crtmt",   0 },
  61
  62 #undef XCOFF_DEBUGGING_INFO
  63
  64 /* this is pure coff, not xcoff */
  65 #define SDB_DEBUGGING_INFO
  66 #define DBX_DEBUGGING_INFO
  67
  68 #undef  SDB_DELIM
  69 #define SDB_DELIM ";"
  70
  71 #undef  PREFERRED_DEBUGGING_TYPE
  72 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  73
  74 #undef PROCESSOR_DEFAULT
  75 #define PROCESSOR_DEFAULT PROCESSOR_POWERPC
  76
  77 /* NT always runs little endian */
  78 #undef  BYTES_BIG_ENDIAN
  79 #define BYTES_BIG_ENDIAN 0
  80
  81 #undef  WORDS_BIG_ENDIAN
  82 #define WORDS_BIG_ENDIAN 0
  83
  84 /* Define cutoff for using external functions to save floating point.
  85    Currently on NT, always use inline stores */
  86 #undef  FP_SAVE_INLINE
  87 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
  88
  89 /* Note, little endian systems trap on unaligned addresses, so never
  90    turn off strict alignment in that case. */
  91
  92 #undef STRICT_ALIGNMENT
  93 #define STRICT_ALIGNMENT 1
  94
  95 /* Align stack to 16 byte boundaries */
  96 #undef  STACK_BOUNDARY
  97 #define STACK_BOUNDARY  128
  98
  99 /* No data type wants to be aligned rounder than this.  */
 100 #undef  BIGGEST_ALIGNMENT
 101 #define BIGGEST_ALIGNMENT 128
 102
 103 #undef TARGET_VERSION
 104 #define TARGET_VERSION fprintf (stderr, " (PowerPC PE)");
 105
 106 #undef TARGET_DEFAULT
 107 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS | MASK_NO_FP_IN_TOC | MASK_NO_SUM_IN_TOC)
 108
 109 #undef PROCESSOR_DEFAULT
 110 #define PROCESSOR_DEFAULT PROCESSOR_PPC601
 111
 112 /* Address to save the TOC register */
 113 #undef  RS6000_SAVE_TOC
 114 #define RS6000_SAVE_TOC plus_constant (virtual_incoming_args_rtx, -RS6000_SAVE_AREA - 8)
 115
 116 /* Windows NT specifies that r13 is reserved to the OS, so it is not available
 117    to the normal user.  */
 118
 119 #undef  FIXED_R13
 120 #define FIXED_R13 1
 121
 122 \f
 123 /* Output .file and comments listing what options there are */
 124 #undef  ASM_FILE_START
 125 #define ASM_FILE_START(FILE)                                    \
 126 {                                                               \
 127   ASM_OUTPUT_OPTIONS (FILE);                                    \
 128   output_file_directive (FILE, main_input_filename);            \
 129 }
 130
 131 /* Define the extra sections we need.  We define three: one is the read-only
 132    data section which is used for constants.  This is a csect whose name is
 133    derived from the name of the input file.  The second is for initialized
 134    global variables.  This is a csect whose name is that of the variable.
 135    The third is the TOC.  */
 136
 137 #undef SELECT_SECTION
 138
 139 #undef  READONLY_DATA_SECTION
 140 #undef  EXTRA_SECTIONS
 141 #define EXTRA_SECTIONS toc
 142
 143 /* Define the routines to implement these extra sections.  */
 144
 145 #undef  EXTRA_SECTION_FUNCTIONS
 146 #define EXTRA_SECTION_FUNCTIONS                         \
 147                                                         \
 148 void                                                    \
 149 toc_section ()                                          \
 150 {                                                       \
 151 }
 152
 153
 154 #undef SELECT_RTX_SECTION
 155 #undef ASM_DECLARE_FUNCTION_NAME
 156
 157 \f
 158 /* This says how to output an assembler line
 159    to define a global common symbol.  */
 160
 161 #undef  ASM_OUTPUT_ALIGNED_COMMON
 162 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGNMENT)  \
 163   do { fputs ("\t.comm \t", (FILE));                            \
 164        assemble_name ((FILE), (NAME));                          \
 165        if ( (SIZE) > 4)                                         \
 166          fprintf ((FILE), ",%d,%d\n", (SIZE), 3);               \
 167        else                                                     \
 168          fprintf( (FILE), ",%d\n", (SIZE));                     \
 169   } while (0)
 170
 171 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 172
 173 /* This says how to output an assembler line
 174    to define a global common symbol.  */
 175
 176 #undef  ASM_OUTPUT_COMMON
 177 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)    \
 178   do { fputs ("\t.comm \t", (FILE));                    \
 179        assemble_name ((FILE), (NAME));                  \
 180        fprintf ((FILE), ",%d\n", (SIZE)); } while (0)
 181
 182 /* This says how to output an assembler line
 183    to define an aligned local common symbol.  */
 184
 185 #undef ASM_OUTPUT_ALIGNED_LOCAL
 186 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 187 do {                                                                    \
 188   bss_section ();                                                       \
 189   ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));          \
 190   ASM_OUTPUT_LABEL (FILE, NAME);                                        \
 191   ASM_OUTPUT_SKIP (FILE, SIZE);                                         \
 192 } while (0)
 193
 194 /* Describe how to emit unitialized external linkage items  */
 195 #define ASM_OUTPUT_ALIGNED_BSS(FILE, NAME, SIZE, ALIGN)                 \
 196 do {                                                                    \
 197   ASM_GLOBALIZE_LABEL (FILE, NAME);                                     \
 198   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
 199 } while (0)
 200
 201 /* This says out to put a global symbol in the BSS section */
 202 #undef ASM_OUTPUT_ALIGNED_BSS
 203 #define ASM_OUTPUT_ALIGNED_BSS(FILE, NAME, SIZE, ALIGN) \
 204   asm_output_aligned_bss ((FILE), (NAME), (SIZE), (ALIGN))
 205
 206
 207 /* Stuff to force fit us into the Motorola PPC assembler */
 208
 209 #if 0
 210 #undef ASM_FILE_START
 211 #define ASM_FILE_START(FILE)                                    \
 212 {                                                               \
 213   output_file_directive (FILE, main_input_filename);            \
 214   fprintf (FILE, "\n#\tDirective section\n");                   \
 215   fprintf (FILE, "\t.section\t.drectve,\"iR\"\n");              \
 216   fprintf (FILE, "\t.byte\t\"-defaultlib:LIBC\" \n");           \
 217   fprintf (FILE, "\t.previous\n\n");                              \
 218 }
 219 #endif
 220
 221 #undef ASM_FILE_START
 222 #define ASM_FILE_START(FILE)                                    \
 223 {                                                               \
 224   ASM_OUTPUT_OPTIONS (FILE);                                    \
 225   output_file_directive (FILE, main_input_filename);            \
 226   data_section ();                                              \
 227 }
 228
 229 #undef ASM_FILE_END
 230
 231 #undef  ASM_OUTPUT_FUNCTION_PREFIX
 232 #define ASM_OUTPUT_FUNCTION_PREFIX(FILE,NAME)                   \
 233 {                                                               \
 234   fprintf (FILE, "\n#\tFunction: '..");                         \
 235   assemble_name (FILE, NAME);                                   \
 236   fprintf (FILE, "'\n");                                        \
 237   fprintf (FILE, "#\tText in section: <%s>\n\n","default");     \
 238   fprintf (FILE, "#\tSetup MS Structured-Exception-Handling\n"); \
 239   fprintf (FILE, "\t.pdata\n");                                 \
 240   fprintf (FILE, "\t.align 2\n");                               \
 241   fprintf (FILE, "\t.ualong ..");                               \
 242   assemble_name (FILE, NAME);                                   \
 243   fprintf (FILE, ",");                                          \
 244   assemble_name (FILE, NAME);                                   \
 245   fprintf (FILE, ".e,0,0,");                                    \
 246   assemble_name (FILE, NAME);                                   \
 247   fprintf (FILE, ".b\n\n");                                     \
 248   fprintf (FILE, "#\tSwitch to the relocation section\n");      \
 249   fprintf (FILE, "\t.reldata\n");                               \
 250 }
 251
 252
 253 #define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL)               \
 254 {                                                               \
 255   if (TREE_PUBLIC (DECL))                                       \
 256     {                                                           \
 257       fprintf (FILE, "\t.globl ..");                            \
 258       assemble_name (FILE, NAME);                               \
 259       fprintf (FILE, "\n");                                     \
 260     }                                                           \
 261   assemble_name (FILE, NAME);                                   \
 262   fprintf (FILE, ":\n");                                        \
 263   fprintf (FILE, "\t.ualong ..");                               \
 264   assemble_name (FILE, NAME);                                   \
 265   fprintf (FILE, ",.toc\n");                                    \
 266                                                                 \
 267   if (lookup_attribute ("dllexport",                            \
 268                         TYPE_ATTRIBUTES (TREE_TYPE (DECL))))    \
 269     {                                                           \
 270       fprintf (FILE, "\t.globl __imp_");                        \
 271       assemble_name (FILE, NAME);                               \
 272       fprintf (FILE, "\n__imp_");                               \
 273       assemble_name (FILE, NAME);                               \
 274       fprintf (FILE, ":\n\t.ulong ");                           \
 275       assemble_name (FILE, NAME);                               \
 276       fprintf (FILE, "\n");                                     \
 277     }                                                           \
 278                                                                 \
 279   fprintf (FILE, "\t.section .text\n\t.align 2\n..");           \
 280   assemble_name (FILE, NAME);                                   \
 281   fprintf (FILE, ":\n");                                        \
 282   fprintf (FILE, "\t.function\t..");                            \
 283   assemble_name (FILE, NAME);                                   \
 284   fprintf (FILE, "\n");                                         \
 285 }
 286
 287 /* This is how to output an assembler line defining a `double' constant.  */
 288
 289 #undef  ASM_OUTPUT_DOUBLE
 290 #define ASM_OUTPUT_DOUBLE(FILE, VALUE)                                  \
 291   {                                                                     \
 292     if (REAL_VALUE_ISINF (VALUE)                                        \
 293         || REAL_VALUE_ISNAN (VALUE)                                     \
 294         || REAL_VALUE_MINUS_ZERO (VALUE))                               \
 295       {                                                                 \
 296         long t[2];                                                      \
 297         REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t);                       \
 298         fprintf (FILE, "\t.ualong 0x%lx\n\t.long 0x%lx\n",              \
 299                 t[0] & 0xffffffff, t[1] & 0xffffffff);                  \
 300       }                                                                 \
 301     else                                                                \
 302       {                                                                 \
 303         char str[30];                                                   \
 304         REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", str);                    \
 305         fprintf (FILE, "\t.double %s\n", str);                          \
 306       }                                                                 \
 307   }
 308
 309 /* This is how to output an assembler line defining a `float' constant.  */
 310
 311 #undef  ASM_OUTPUT_FLOAT
 312 #define ASM_OUTPUT_FLOAT(FILE, VALUE)                                   \
 313   {                                                                     \
 314     if (REAL_VALUE_ISINF (VALUE)                                        \
 315         || REAL_VALUE_ISNAN (VALUE)                                     \
 316         || REAL_VALUE_MINUS_ZERO (VALUE))                               \
 317       {                                                                 \
 318         long t;                                                         \
 319         REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t);                       \
 320         fprintf (FILE, "\t.ualong 0x%lx\n", t & 0xffffffff);            \
 321       }                                                                 \
 322     else                                                                \
 323       {                                                                 \
 324         char str[30];                                                   \
 325         REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", str);                  \
 326         fprintf (FILE, "\t.float %s\n", str);                           \
 327       }                                                                 \
 328   }
 329
 330 /* Output before instructions.  */
 331 #undef TEXT_SECTION_ASM_OP
 332 #define TEXT_SECTION_ASM_OP "\t.text"
 333
 334 /* Output before writable data.  */
 335 #undef DATA_SECTION_ASM_OP
 336 #define DATA_SECTION_ASM_OP "\t.data"
 337
 338 /* Output to the bss section.  */
 339 #undef BSS_SECTION_ASM_OP
 340 #define BSS_SECTION_ASM_OP "\t.section .bss"
 341
 342 /* Text to write out after a CALL that may be replaced by glue code by
 343    the loader.  The motorola asm demands that, for dll support, a .znop
 344    be issued after a bl instruction, and the symbol on the .znop is the
 345    symbol on the bl instruction */
 346
 347 #undef RS6000_CALL_GLUE
 348 #define RS6000_CALL_GLUE "nop #\tFIXME: only works for non-dll calls."
 349
 350 #define RS6000_CALL_GLUE2 ".znop "
 351
 352 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY
 353
 354 /* Output something to declare an external symbol to the assembler.  Most
 355    assemblers don't need this.  */
 356
 357 #undef ASM_OUTPUT_EXTERNAL
 358
 359 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                           \
 360 {                                                                       \
 361   char *_name;                                                          \
 362   rtx _symref = XEXP (DECL_RTL (DECL), 0);                              \
 363   if ((TREE_CODE (DECL) == VAR_DECL                                     \
 364        || TREE_CODE (DECL) == FUNCTION_DECL)                            \
 365       && (NAME)[strlen (NAME) - 1] != ']')                              \
 366     {                                                                   \
 367       _name = (char *) permalloc (strlen (XSTR (_symref, 0)) + 5);      \
 368       strcpy (_name, XSTR (_symref, 0));                                \
 369       XSTR (_symref, 0) = _name;                                        \
 370     }                                                                   \
 371   else                                                                  \
 372     _name = XSTR (_symref, 0);                                          \
 373                                                                         \
 374   if (DECL_FUNCTION_CODE (DECL) == 0)                                   \
 375     {                                                                   \
 376       fputs ("\t.extern ", FILE);                                       \
 377       assemble_name (FILE, _name);                                      \
 378       putc ('\n', FILE);                                                \
 379       if (TREE_CODE (DECL) == FUNCTION_DECL)                            \
 380         {                                                               \
 381           fputs ("\t.extern ..", FILE);                                 \
 382           assemble_name (FILE, _name);                                  \
 383           putc ('\n', FILE);                                            \
 384         }                                                               \
 385     }                                                                   \
 386 }
 387
 388 /* Similar, but for libcall.  We only have to worry about the function name,
 389    not that of the descriptor. */
 390
 391 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 392
 393 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)  \
 394 { fprintf (FILE, "\t.extern ..");               \
 395   assemble_name (FILE, XSTR (FUN, 0));          \
 396   fprintf (FILE, "\n");                         \
 397 }
 398
 399
 400 /* Eliminate AIX style constant pool processing */
 401 #undef  LEGITIMATE_CONSTANT_POOL_BASE_P
 402 #define LEGITIMATE_CONSTANT_POOL_BASE_P(X) 0
 403
 404 #undef  LEGITIMATE_CONSTANT_POOL_ADDRESS_P
 405 #define LEGITIMATE_CONSTANT_POOL_ADDRESS_P(X) 0
 406
 407 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY
 408
 409 #undef  ASM_IDENTIFY_GCC
 410 #define ASM_IDENTIFY_GCC(x)
 411
 412 #undef  HAS_INIT_SECTION
 413 #define HAS_INIT_SECTION