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 /* NT aligns internal doubles in structures on dword boundaries.  */
 104 #undef  BIGGEST_FIELD_ALIGNMENT
 105 #define BIGGEST_FIELD_ALIGNMENT 64
 106
 107 #undef TARGET_VERSION
 108 #define TARGET_VERSION fprintf (stderr, " (PowerPC PE)");
 109
 110 #undef TARGET_DEFAULT
 111 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS | MASK_NO_FP_IN_TOC | MASK_NO_SUM_IN_TOC)
 112
 113 #undef PROCESSOR_DEFAULT
 114 #define PROCESSOR_DEFAULT PROCESSOR_PPC601
 115
 116 /* Address to save the TOC register */
 117 #undef  RS6000_SAVE_TOC
 118 #define RS6000_SAVE_TOC plus_constant (virtual_incoming_args_rtx, -RS6000_SAVE_AREA - 8)
 119
 120 /* Windows NT specifies that r13 is reserved to the OS, so it is not available
 121    to the normal user.  */
 122
 123 #undef  FIXED_R13
 124 #define FIXED_R13 1
 125
 126 \f
 127 /* Output .file and comments listing what options there are */
 128 #undef  ASM_FILE_START
 129 #define ASM_FILE_START(FILE)                                    \
 130 {                                                               \
 131   ASM_OUTPUT_OPTIONS (FILE);                                    \
 132   output_file_directive (FILE, main_input_filename);            \
 133 }
 134
 135 \f
 136 /* This says how to output an assembler line
 137    to define a global common symbol.  */
 138
 139 #undef  ASM_OUTPUT_ALIGNED_COMMON
 140 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGNMENT)  \
 141   do { fputs ("\t.comm \t", (FILE));                            \
 142        assemble_name ((FILE), (NAME));                          \
 143        if ( (SIZE) > 4)                                         \
 144          fprintf ((FILE), ",%d,%d\n", (SIZE), 3);               \
 145        else                                                     \
 146          fprintf( (FILE), ",%d\n", (SIZE));                     \
 147   } while (0)
 148
 149 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 150
 151 /* This says how to output an assembler line
 152    to define a global common symbol.  */
 153
 154 #undef  ASM_OUTPUT_COMMON
 155 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)    \
 156   do { fputs ("\t.comm \t", (FILE));                    \
 157        assemble_name ((FILE), (NAME));                  \
 158        fprintf ((FILE), ",%d\n", (SIZE)); } while (0)
 159
 160 /* This says how to output an assembler line
 161    to define an aligned local common symbol.  */
 162
 163 #undef ASM_OUTPUT_ALIGNED_LOCAL
 164 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 165 do {                                                                    \
 166   bss_section ();                                                       \
 167   ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));          \
 168   ASM_OUTPUT_LABEL (FILE, NAME);                                        \
 169   ASM_OUTPUT_SKIP (FILE, SIZE);                                         \
 170 } while (0)
 171
 172 /* Describe how to emit unitialized external linkage items  */
 173 #define ASM_OUTPUT_ALIGNED_BSS(FILE, NAME, SIZE, ALIGN)                 \
 174 do {                                                                    \
 175   ASM_GLOBALIZE_LABEL (FILE, NAME);                                     \
 176   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
 177 } while (0)
 178
 179 /* This says out to put a global symbol in the BSS section */
 180 #undef ASM_OUTPUT_ALIGNED_BSS
 181 #define ASM_OUTPUT_ALIGNED_BSS(FILE, NAME, SIZE, ALIGN) \
 182   asm_output_aligned_bss ((FILE), (NAME), (SIZE), (ALIGN))
 183
 184
 185 /* Stuff to force fit us into the Motorola PPC assembler */
 186
 187 #if 0
 188 #undef ASM_FILE_START
 189 #define ASM_FILE_START(FILE)                                    \
 190 {                                                               \
 191   output_file_directive (FILE, main_input_filename);            \
 192   fprintf (FILE, "\n#\tDirective section\n");                   \
 193   fprintf (FILE, "\t.section\t.drectve,\"iR\"\n");              \
 194   fprintf (FILE, "\t.byte\t\"-defaultlib:LIBC\" \n");           \
 195   fprintf (FILE, "\t.previous\n\n");                              \
 196 }
 197 #endif
 198
 199 #undef ASM_FILE_START
 200 #define ASM_FILE_START(FILE)                                    \
 201 {                                                               \
 202   ASM_OUTPUT_OPTIONS (FILE);                                    \
 203   output_file_directive (FILE, main_input_filename);            \
 204   data_section ();                                              \
 205 }
 206
 207 #undef ASM_FILE_END
 208
 209 #undef  ASM_DECLARE_FUNCTION_NAME
 210 #define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL)                       \
 211 {                                                                       \
 212   tree exception_args;                                                  \
 213   int i;                                                                \
 214                                                                         \
 215   if (TREE_PUBLIC (DECL))                                               \
 216     {                                                                   \
 217       fprintf (FILE, "\t.globl ..");                                    \
 218       assemble_name (FILE, NAME);                                       \
 219       fprintf (FILE, "\n");                                             \
 220     }                                                                   \
 221   assemble_name (FILE, NAME);                                           \
 222   fprintf (FILE, ":\n");                                                \
 223   fprintf (FILE, "\t.ualong ..");                                       \
 224   assemble_name (FILE, NAME);                                           \
 225   fprintf (FILE, ",.toc\n");                                            \
 226                                                                         \
 227   fprintf (FILE, "\n#\tFunction: '..");                                 \
 228   assemble_name (FILE, NAME);                                           \
 229   fputs ("'\n", FILE);                                                  \
 230   fputs ("#\tText in section: <default>\n\n", FILE);                    \
 231   fputs ("#\tSetup MS Structured-Exception-Handling\n", FILE);          \
 232   fputs ("\t.pdata\n", FILE);                                           \
 233   fputs ("\t.align 2\n", FILE);                                         \
 234   fputs ("\t.ualong ..", FILE);                                         \
 235   assemble_name (FILE, NAME);                                           \
 236   fputs (",", FILE);                                                    \
 237   assemble_name (FILE, NAME);                                           \
 238   fputs (".e,", FILE);                                                  \
 239   exception_args = lookup_attribute ("exception",                       \
 240                                      TYPE_ATTRIBUTES (TREE_TYPE (DECL))); \
 241                                                                         \
 242   if (exception_args)                                                   \
 243     exception_args = TREE_VALUE (exception_args);                       \
 244                                                                         \
 245   for (i = 0; i < 2; i++)                                               \
 246     {                                                                   \
 247       if (!exception_args)                                              \
 248         fputs ("0,", FILE);                                             \
 249       else                                                              \
 250         {                                                               \
 251           tree field = TREE_VALUE (exception_args);                     \
 252           exception_args = TREE_PURPOSE (exception_args);               \
 253           if (TREE_CODE (field) == STRING_CST)                          \
 254             fprintf (FILE, "%.*s,", TREE_STRING_LENGTH (field),         \
 255                      TREE_STRING_POINTER (field));                      \
 256           else if (TREE_CODE (field) == IDENTIFIER_NODE)                \
 257             fprintf (FILE, "%.*s,", IDENTIFIER_LENGTH (field),          \
 258                      IDENTIFIER_POINTER (field));                       \
 259           else                                                          \
 260             abort ();                                                   \
 261         }                                                               \
 262     }                                                                   \
 263                                                                         \
 264   assemble_name (FILE, NAME);                                           \
 265   fprintf (FILE, ".b\n\n");                                             \
 266   fprintf (FILE, "#\tSwitch to the relocation section\n");              \
 267   fprintf (FILE, "\t.reldata\n");                                       \
 268                                                                         \
 269   if (lookup_attribute ("dllexport",                                    \
 270                         TYPE_ATTRIBUTES (TREE_TYPE (DECL))))            \
 271     {                                                                   \
 272       fprintf (FILE, "\t.globl __imp_");                                \
 273       assemble_name (FILE, NAME);                                       \
 274       fprintf (FILE, "\n__imp_");                                       \
 275       assemble_name (FILE, NAME);                                       \
 276       fprintf (FILE, ":\n\t.ulong ");                                   \
 277       assemble_name (FILE, NAME);                                       \
 278       fprintf (FILE, "\n");                                             \
 279     }                                                                   \
 280                                                                         \
 281   fprintf (FILE, "\t.section .text\n\t.align 2\n..");                   \
 282   assemble_name (FILE, NAME);                                           \
 283   fprintf (FILE, ":\n");                                                \
 284   fprintf (FILE, "\t.function\t..");                                    \
 285   assemble_name (FILE, NAME);                                           \
 286   fprintf (FILE, "\n");                                                 \
 287 }
 288
 289 /* This is how to output an assembler line defining a `double' constant.  */
 290
 291 #undef  ASM_OUTPUT_DOUBLE
 292 #define ASM_OUTPUT_DOUBLE(FILE, VALUE)                                  \
 293   {                                                                     \
 294     if (REAL_VALUE_ISINF (VALUE)                                        \
 295         || REAL_VALUE_ISNAN (VALUE)                                     \
 296         || REAL_VALUE_MINUS_ZERO (VALUE))                               \
 297       {                                                                 \
 298         long t[2];                                                      \
 299         REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t);                       \
 300         fprintf (FILE, "\t.ualong 0x%lx\n\t.long 0x%lx\n",              \
 301                 t[0] & 0xffffffff, t[1] & 0xffffffff);                  \
 302       }                                                                 \
 303     else                                                                \
 304       {                                                                 \
 305         char str[30];                                                   \
 306         REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", str);                    \
 307         fprintf (FILE, "\t.double %s\n", str);                          \
 308       }                                                                 \
 309   }
 310
 311 /* This is how to output an assembler line defining a `float' constant.  */
 312
 313 #undef  ASM_OUTPUT_FLOAT
 314 #define ASM_OUTPUT_FLOAT(FILE, VALUE)                                   \
 315   {                                                                     \
 316     if (REAL_VALUE_ISINF (VALUE)                                        \
 317         || REAL_VALUE_ISNAN (VALUE)                                     \
 318         || REAL_VALUE_MINUS_ZERO (VALUE))                               \
 319       {                                                                 \
 320         long t;                                                         \
 321         REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t);                       \
 322         fprintf (FILE, "\t.ualong 0x%lx\n", t & 0xffffffff);            \
 323       }                                                                 \
 324     else                                                                \
 325       {                                                                 \
 326         char str[30];                                                   \
 327         REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", str);                  \
 328         fprintf (FILE, "\t.float %s\n", str);                           \
 329       }                                                                 \
 330   }
 331
 332 /* Output before instructions.  */
 333 #undef TEXT_SECTION_ASM_OP
 334 #define TEXT_SECTION_ASM_OP "\t.text"
 335
 336 /* Output before writable data.  */
 337 #undef DATA_SECTION_ASM_OP
 338 #define DATA_SECTION_ASM_OP "\t.data"
 339
 340 /* Output to the bss section.  */
 341 #undef BSS_SECTION_ASM_OP
 342 #define BSS_SECTION_ASM_OP "\t.section .bss"
 343
 344 /* Define the extra sections we need.  We define a dummy TOC section,
 345    plus sections to hold the list of static constructors (.ctors) and
 346    destructors (.dtors).  */
 347
 348 #undef  READONLY_DATA_SECTION
 349 #undef  EXTRA_SECTIONS
 350 #define EXTRA_SECTIONS in_toc, in_ctors, in_dtors
 351
 352 /* Define the routines to implement these extra sections.  */
 353
 354 #undef  EXTRA_SECTION_FUNCTIONS
 355 #define EXTRA_SECTION_FUNCTIONS                                         \
 356   CTORS_SECTION_FUNCTION                                                \
 357   DTORS_SECTION_FUNCTION                                                \
 358   TOC_SECTION_FUNCTION                                                  \
 359
 360 #define TOC_SECTION_FUNCTION                                            \
 361 void                                                                    \
 362 toc_section ()                                                          \
 363 {                                                                       \
 364 }
 365
 366 #define CTORS_SECTION_ASM_OP    ".section\t.ctors"
 367 #define CTORS_SECTION_FUNCTION                                          \
 368 void                                                                    \
 369 ctors_section ()                                                        \
 370 {                                                                       \
 371   if (in_section != in_ctors)                                           \
 372     {                                                                   \
 373       fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP);             \
 374       in_section = in_ctors;                                            \
 375     }                                                                   \
 376 }
 377
 378 #define DTORS_SECTION_ASM_OP    ".section\t.dtors"
 379 #define DTORS_SECTION_FUNCTION                                          \
 380 void                                                                    \
 381 dtors_section ()                                                        \
 382 {                                                                       \
 383   if (in_section != in_dtors)                                           \
 384     {                                                                   \
 385       fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP);             \
 386       in_section = in_dtors;                                            \
 387     }                                                                   \
 388 }
 389
 390 #undef SELECT_SECTION
 391 #undef SELECT_RTX_SECTION
 392
 393 /* Make sure __main gets called */
 394 #define INVOKE__main 1
 395
 396 /* A C statement (sans semicolon) to output an element in the table of
 397    global constructors.  */
 398 #undef  ASM_OUTPUT_CONSTRUCTOR
 399 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)                               \
 400   do {                                                                  \
 401     ctors_section ();                                                   \
 402     fprintf (FILE, "\t.ualong ");                                       \
 403     assemble_name (FILE, NAME);                                         \
 404     fprintf (FILE, "\n");                                               \
 405   } while (0)
 406
 407 /* A C statement (sans semicolon) to output an element in the table of
 408    global destructors.  */
 409 #undef  ASM_OUTPUT_DESTRUCTOR
 410 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                                \
 411   do {                                                                  \
 412     dtors_section ();                                                   \
 413     fprintf (FILE, "\t.ualong ");                                       \
 414     assemble_name (FILE, NAME);                                         \
 415     fprintf (FILE, "\n");                                               \
 416   } while (0)
 417
 418
 419 /* Text to write out after a CALL that may be replaced by glue code by
 420    the loader.  The motorola asm demands that, for dll support, a .znop
 421    be issued after a bl instruction, and the symbol on the .znop is the
 422    symbol on the bl instruction */
 423
 424 #undef RS6000_CALL_GLUE
 425 #define RS6000_CALL_GLUE "nop #\tFIXME: only works for non-dll calls."
 426
 427 #define RS6000_CALL_GLUE2 ".znop "
 428
 429 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY
 430
 431 /* Output something to declare an external symbol to the assembler.  Most
 432    assemblers don't need this.  */
 433
 434 #undef ASM_OUTPUT_EXTERNAL
 435
 436 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                           \
 437 {                                                                       \
 438   char *_name;                                                          \
 439   rtx _symref = XEXP (DECL_RTL (DECL), 0);                              \
 440   if ((TREE_CODE (DECL) == VAR_DECL                                     \
 441        || TREE_CODE (DECL) == FUNCTION_DECL)                            \
 442       && (NAME)[strlen (NAME) - 1] != ']')                              \
 443     {                                                                   \
 444       _name = (char *) permalloc (strlen (XSTR (_symref, 0)) + 5);      \
 445       strcpy (_name, XSTR (_symref, 0));                                \
 446       XSTR (_symref, 0) = _name;                                        \
 447     }                                                                   \
 448   else                                                                  \
 449     _name = XSTR (_symref, 0);                                          \
 450                                                                         \
 451   if (DECL_FUNCTION_CODE (DECL) == 0)                                   \
 452     {                                                                   \
 453       fputs ("\t.extern ", FILE);                                       \
 454       assemble_name (FILE, _name);                                      \
 455       putc ('\n', FILE);                                                \
 456       if (TREE_CODE (DECL) == FUNCTION_DECL)                            \
 457         {                                                               \
 458           fputs ("\t.extern ..", FILE);                                 \
 459           assemble_name (FILE, _name);                                  \
 460           putc ('\n', FILE);                                            \
 461         }                                                               \
 462     }                                                                   \
 463 }
 464
 465 /* Similar, but for libcall.  We only have to worry about the function name,
 466    not that of the descriptor. */
 467
 468 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 469
 470 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)  \
 471 { fprintf (FILE, "\t.extern ..");               \
 472   assemble_name (FILE, XSTR (FUN, 0));          \
 473   fprintf (FILE, "\n");                         \
 474 }
 475
 476
 477 /* Eliminate AIX style constant pool processing */
 478 #undef  LEGITIMATE_CONSTANT_POOL_BASE_P
 479 #define LEGITIMATE_CONSTANT_POOL_BASE_P(X) 0
 480
 481 #undef  LEGITIMATE_CONSTANT_POOL_ADDRESS_P
 482 #define LEGITIMATE_CONSTANT_POOL_ADDRESS_P(X) 0
 483
 484 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY
 485
 486 #undef  ASM_IDENTIFY_GCC
 487 #define ASM_IDENTIFY_GCC(x)
 488
 489 #undef  HAS_INIT_SECTION
 490 #define HAS_INIT_SECTION