gcc/config/rs6000/win-nt.h

   1 /* Definitions of target machine for GNU compiler, for PowerPC
   2    running Windows/NT.
   3    Copyright (C) 1995, 1996 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 /* NT aligns internal doubles in structures on dword boundaries.  */
 104 #undef  BIGGEST_FIELD_ALIGNMENT
 105 #define BIGGEST_FIELD_ALIGNMENT 64
 106
 107 #undef  ADJUST_FIELD_ALIGN
 108 #undef  ROUND_TYPE_ALIGN
 109
 110 #undef TARGET_VERSION
 111 #define TARGET_VERSION fprintf (stderr, " (PowerPC PE)");
 112
 113 #undef TARGET_DEFAULT
 114 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS | MASK_NO_FP_IN_TOC | MASK_NO_SUM_IN_TOC)
 115
 116 #undef PROCESSOR_DEFAULT
 117 #define PROCESSOR_DEFAULT PROCESSOR_PPC601
 118
 119 /* Address to save the TOC register */
 120 #undef  RS6000_SAVE_TOC
 121 #define RS6000_SAVE_TOC plus_constant (virtual_incoming_args_rtx, -RS6000_SAVE_AREA - 8)
 122
 123 /* Windows NT specifies that r13 is reserved to the OS, so it is not available
 124    to the normal user.  */
 125
 126 #undef  FIXED_R13
 127 #define FIXED_R13 1
 128 \f
 129 /* This says how to output an assembler line
 130    to define a global common symbol.  */
 131
 132 #undef  ASM_OUTPUT_ALIGNED_COMMON
 133 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGNMENT)  \
 134   do { fputs ("\t.comm \t", (FILE));                            \
 135        assemble_name ((FILE), (NAME));                          \
 136        if ( (SIZE) > 4)                                         \
 137          fprintf ((FILE), ",%d,%d\n", (SIZE), 3);               \
 138        else                                                     \
 139          fprintf( (FILE), ",%d\n", (SIZE));                     \
 140   } while (0)
 141
 142 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 143
 144 /* This says how to output an assembler line
 145    to define a global common symbol.  */
 146
 147 #undef  ASM_OUTPUT_COMMON
 148 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)    \
 149   do { fputs ("\t.comm \t", (FILE));                    \
 150        assemble_name ((FILE), (NAME));                  \
 151        fprintf ((FILE), ",%d\n", (SIZE)); } while (0)
 152
 153 /* This says how to output an assembler line
 154    to define an aligned local common symbol.  */
 155
 156 #undef ASM_OUTPUT_ALIGNED_LOCAL
 157 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 158 do {                                                                    \
 159   bss_section ();                                                       \
 160   ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));          \
 161   ASM_OUTPUT_LABEL (FILE, NAME);                                        \
 162   ASM_OUTPUT_SKIP (FILE, SIZE);                                         \
 163 } while (0)
 164
 165 /* Describe how to emit unitialized external linkage items  */
 166 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 167 do {                                                                    \
 168   ASM_GLOBALIZE_LABEL (FILE, NAME);                                     \
 169   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
 170 } while (0)
 171
 172 /* This says out to put a global symbol in the BSS section */
 173 #undef ASM_OUTPUT_ALIGNED_BSS
 174 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
 175   asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 176
 177
 178 /* Stuff to force fit us into the Motorola PPC assembler */
 179
 180 #undef ASM_FILE_START
 181 #define ASM_FILE_START(FILE)                                            \
 182 do {                                                                    \
 183   output_file_directive ((FILE), main_input_filename);                  \
 184   rs6000_file_start (FILE, TARGET_CPU_DEFAULT);                         \
 185   data_section ();                                                      \
 186 } while (0)
 187
 188 #undef ASM_FILE_END
 189
 190 #undef  ASM_DECLARE_FUNCTION_NAME
 191 #define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL)                       \
 192 {                                                                       \
 193   tree exception_args;                                                  \
 194   int i;                                                                \
 195                                                                         \
 196   if (TREE_PUBLIC (DECL))                                               \
 197     {                                                                   \
 198       fprintf (FILE, "\t.globl ..");                                    \
 199       assemble_name (FILE, NAME);                                       \
 200       fprintf (FILE, "\n");                                             \
 201     }                                                                   \
 202   assemble_name (FILE, NAME);                                           \
 203   fprintf (FILE, ":\n");                                                \
 204   fprintf (FILE, "\t.ualong ..");                                       \
 205   assemble_name (FILE, NAME);                                           \
 206   fprintf (FILE, ",.toc\n");                                            \
 207                                                                         \
 208   fprintf (FILE, "\n#\tFunction: '..");                                 \
 209   assemble_name (FILE, NAME);                                           \
 210   fputs ("'\n", FILE);                                                  \
 211   fputs ("#\tText in section: <default>\n\n", FILE);                    \
 212   fputs ("#\tSetup MS Structured-Exception-Handling\n", FILE);          \
 213   fputs ("\t.pdata\n", FILE);                                           \
 214   fputs ("\t.align 2\n", FILE);                                         \
 215   fputs ("\t.ualong ..", FILE);                                         \
 216   assemble_name (FILE, NAME);                                           \
 217   fputs (",", FILE);                                                    \
 218   assemble_name (FILE, NAME);                                           \
 219   fputs (".e,", FILE);                                                  \
 220   exception_args = lookup_attribute ("exception",                       \
 221                                      TYPE_ATTRIBUTES (TREE_TYPE (DECL))); \
 222                                                                         \
 223   if (exception_args)                                                   \
 224     exception_args = TREE_VALUE (exception_args);                       \
 225                                                                         \
 226   for (i = 0; i < 2; i++)                                               \
 227     {                                                                   \
 228       if (!exception_args)                                              \
 229         fputs ("0,", FILE);                                             \
 230       else                                                              \
 231         {                                                               \
 232           tree field = TREE_VALUE (exception_args);                     \
 233           exception_args = TREE_PURPOSE (exception_args);               \
 234           if (TREE_CODE (field) == STRING_CST)                          \
 235             fprintf (FILE, "%.*s,", TREE_STRING_LENGTH (field),         \
 236                      TREE_STRING_POINTER (field));                      \
 237           else if (TREE_CODE (field) == IDENTIFIER_NODE)                \
 238             fprintf (FILE, "%.*s,", IDENTIFIER_LENGTH (field),          \
 239                      IDENTIFIER_POINTER (field));                       \
 240           else                                                          \
 241             abort ();                                                   \
 242         }                                                               \
 243     }                                                                   \
 244                                                                         \
 245   assemble_name (FILE, NAME);                                           \
 246   fprintf (FILE, ".b\n\n");                                             \
 247   fprintf (FILE, "#\tSwitch to the relocation section\n");              \
 248   fprintf (FILE, "\t.reldata\n");                                       \
 249                                                                         \
 250   if (lookup_attribute ("dllexport",                                    \
 251                         TYPE_ATTRIBUTES (TREE_TYPE (DECL))))            \
 252     {                                                                   \
 253       fprintf (FILE, "\t.globl __imp_");                                \
 254       assemble_name (FILE, NAME);                                       \
 255       fprintf (FILE, "\n__imp_");                                       \
 256       assemble_name (FILE, NAME);                                       \
 257       fprintf (FILE, ":\n\t.ulong ");                                   \
 258       assemble_name (FILE, NAME);                                       \
 259       fprintf (FILE, "\n");                                             \
 260     }                                                                   \
 261                                                                         \
 262   fprintf (FILE, "\t.section .text\n\t.align 2\n..");                   \
 263   assemble_name (FILE, NAME);                                           \
 264   fprintf (FILE, ":\n");                                                \
 265   fprintf (FILE, "\t.function\t..");                                    \
 266   assemble_name (FILE, NAME);                                           \
 267   fprintf (FILE, "\n");                                                 \
 268 }
 269
 270 /* This is how to output an assembler line defining a `double' constant.  */
 271
 272 #undef  ASM_OUTPUT_DOUBLE
 273 #define ASM_OUTPUT_DOUBLE(FILE, VALUE)                                  \
 274   {                                                                     \
 275     if (REAL_VALUE_ISINF (VALUE)                                        \
 276         || REAL_VALUE_ISNAN (VALUE)                                     \
 277         || REAL_VALUE_MINUS_ZERO (VALUE))                               \
 278       {                                                                 \
 279         long t[2];                                                      \
 280         REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t);                       \
 281         fprintf (FILE, "\t.ualong 0x%lx\n\t.long 0x%lx\n",              \
 282                 t[0] & 0xffffffff, t[1] & 0xffffffff);                  \
 283       }                                                                 \
 284     else                                                                \
 285       {                                                                 \
 286         char str[30];                                                   \
 287         REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", str);                    \
 288         fprintf (FILE, "\t.double %s\n", str);                          \
 289       }                                                                 \
 290   }
 291
 292 /* This is how to output an assembler line defining a `float' constant.  */
 293
 294 #undef  ASM_OUTPUT_FLOAT
 295 #define ASM_OUTPUT_FLOAT(FILE, VALUE)                                   \
 296   {                                                                     \
 297     if (REAL_VALUE_ISINF (VALUE)                                        \
 298         || REAL_VALUE_ISNAN (VALUE)                                     \
 299         || REAL_VALUE_MINUS_ZERO (VALUE))                               \
 300       {                                                                 \
 301         long t;                                                         \
 302         REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t);                       \
 303         fprintf (FILE, "\t.ualong 0x%lx\n", t & 0xffffffff);            \
 304       }                                                                 \
 305     else                                                                \
 306       {                                                                 \
 307         char str[30];                                                   \
 308         REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", str);                  \
 309         fprintf (FILE, "\t.float %s\n", str);                           \
 310       }                                                                 \
 311   }
 312
 313 /* Output before instructions.  */
 314 #undef TEXT_SECTION_ASM_OP
 315 #define TEXT_SECTION_ASM_OP "\t.text"
 316
 317 /* Output before writable data.  */
 318 #undef DATA_SECTION_ASM_OP
 319 #define DATA_SECTION_ASM_OP "\t.data"
 320
 321 /* Output to the bss section.  */
 322 #undef BSS_SECTION_ASM_OP
 323 #define BSS_SECTION_ASM_OP "\t.section .bss"
 324
 325 /* Define the extra sections we need.  We define a dummy TOC section,
 326    plus sections to hold the list of static constructors (.ctors) and
 327    destructors (.dtors).  */
 328
 329 #undef  READONLY_DATA_SECTION
 330 #undef  EXTRA_SECTIONS
 331 #define EXTRA_SECTIONS in_toc, in_ctors, in_dtors
 332
 333 /* Define the routines to implement these extra sections.  */
 334
 335 #undef  EXTRA_SECTION_FUNCTIONS
 336 #define EXTRA_SECTION_FUNCTIONS                                         \
 337   CTORS_SECTION_FUNCTION                                                \
 338   DTORS_SECTION_FUNCTION                                                \
 339   TOC_SECTION_FUNCTION                                                  \
 340
 341 #define TOC_SECTION_FUNCTION                                            \
 342 void                                                                    \
 343 toc_section ()                                                          \
 344 {                                                                       \
 345 }
 346
 347 #define CTORS_SECTION_ASM_OP    ".section\t.ctors"
 348 #define CTORS_SECTION_FUNCTION                                          \
 349 void                                                                    \
 350 ctors_section ()                                                        \
 351 {                                                                       \
 352   if (in_section != in_ctors)                                           \
 353     {                                                                   \
 354       fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP);             \
 355       in_section = in_ctors;                                            \
 356     }                                                                   \
 357 }
 358
 359 #define DTORS_SECTION_ASM_OP    ".section\t.dtors"
 360 #define DTORS_SECTION_FUNCTION                                          \
 361 void                                                                    \
 362 dtors_section ()                                                        \
 363 {                                                                       \
 364   if (in_section != in_dtors)                                           \
 365     {                                                                   \
 366       fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP);             \
 367       in_section = in_dtors;                                            \
 368     }                                                                   \
 369 }
 370
 371 #undef SELECT_SECTION
 372 #undef SELECT_RTX_SECTION
 373
 374 /* Make sure __main gets called */
 375 #define INVOKE__main 1
 376
 377 /* A C statement (sans semicolon) to output an element in the table of
 378    global constructors.  */
 379 #undef  ASM_OUTPUT_CONSTRUCTOR
 380 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)                               \
 381   do {                                                                  \
 382     ctors_section ();                                                   \
 383     fprintf (FILE, "\t.ualong ");                                       \
 384     assemble_name (FILE, NAME);                                         \
 385     fprintf (FILE, "\n");                                               \
 386   } while (0)
 387
 388 /* A C statement (sans semicolon) to output an element in the table of
 389    global destructors.  */
 390 #undef  ASM_OUTPUT_DESTRUCTOR
 391 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                                \
 392   do {                                                                  \
 393     dtors_section ();                                                   \
 394     fprintf (FILE, "\t.ualong ");                                       \
 395     assemble_name (FILE, NAME);                                         \
 396     fprintf (FILE, "\n");                                               \
 397   } while (0)
 398
 399
 400 /* Text to write out after a CALL that may be replaced by glue code by
 401    the loader.  The motorola asm demands that, for dll support, a .znop
 402    be issued after a bl instruction, and the symbol on the .znop is the
 403    symbol on the bl instruction */
 404
 405 #undef RS6000_CALL_GLUE
 406 #define RS6000_CALL_GLUE "nop #\tFIXME: only works for non-dll calls."
 407
 408 #define RS6000_CALL_GLUE2 ".znop "
 409
 410 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY
 411
 412 /* Output something to declare an external symbol to the assembler.  Most
 413    assemblers don't need this.  */
 414
 415 #undef ASM_OUTPUT_EXTERNAL
 416
 417 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                           \
 418 {                                                                       \
 419   char *_name;                                                          \
 420   rtx _symref = XEXP (DECL_RTL (DECL), 0);                              \
 421   if ((TREE_CODE (DECL) == VAR_DECL                                     \
 422        || TREE_CODE (DECL) == FUNCTION_DECL)                            \
 423       && (NAME)[strlen (NAME) - 1] != ']')                              \
 424     {                                                                   \
 425       _name = (char *) permalloc (strlen (XSTR (_symref, 0)) + 5);      \
 426       strcpy (_name, XSTR (_symref, 0));                                \
 427       XSTR (_symref, 0) = _name;                                        \
 428     }                                                                   \
 429   else                                                                  \
 430     _name = XSTR (_symref, 0);                                          \
 431                                                                         \
 432   if (DECL_FUNCTION_CODE (DECL) == 0)                                   \
 433     {                                                                   \
 434       fputs ("\t.extern ", FILE);                                       \
 435       assemble_name (FILE, _name);                                      \
 436       putc ('\n', FILE);                                                \
 437       if (TREE_CODE (DECL) == FUNCTION_DECL)                            \
 438         {                                                               \
 439           fputs ("\t.extern ..", FILE);                                 \
 440           assemble_name (FILE, _name);                                  \
 441           putc ('\n', FILE);                                            \
 442         }                                                               \
 443     }                                                                   \
 444 }
 445
 446 /* Similar, but for libcall.  We only have to worry about the function name,
 447    not that of the descriptor. */
 448
 449 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 450
 451 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)  \
 452 { fprintf (FILE, "\t.extern ..");               \
 453   assemble_name (FILE, XSTR (FUN, 0));          \
 454   fprintf (FILE, "\n");                         \
 455 }
 456
 457
 458 /* Eliminate AIX style constant pool processing */
 459 #undef  LEGITIMATE_CONSTANT_POOL_BASE_P
 460 #define LEGITIMATE_CONSTANT_POOL_BASE_P(X) 0
 461
 462 #undef  LEGITIMATE_CONSTANT_POOL_ADDRESS_P
 463 #define LEGITIMATE_CONSTANT_POOL_ADDRESS_P(X) 0
 464
 465 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY
 466
 467 #undef  ASM_IDENTIFY_GCC
 468 #define ASM_IDENTIFY_GCC(x)
 469
 470 #undef  HAS_INIT_SECTION
 471 #define HAS_INIT_SECTION