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 #if 0
 181 #undef ASM_FILE_START
 182 #define ASM_FILE_START(FILE)                                    \
 183 {                                                               \
 184   output_file_directive (FILE, main_input_filename);            \
 185   fprintf (FILE, "\n#\tDirective section\n");                   \
 186   fprintf (FILE, "\t.section\t.drectve,\"iR\"\n");              \
 187   fprintf (FILE, "\t.byte\t\"-defaultlib:LIBC\" \n");           \
 188   fprintf (FILE, "\t.previous\n\n");                              \
 189 }
 190 #endif
 191
 192 #undef ASM_FILE_START
 193 #define ASM_FILE_START(FILE)                                    \
 194 do {                                                            \
 195   output_file_directive ((FILE), main_input_filename);          \
 196   data_section ();                                              \
 197 } while (0)
 198
 199 #undef ASM_FILE_END
 200
 201 #undef  ASM_DECLARE_FUNCTION_NAME
 202 #define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL)                       \
 203 {                                                                       \
 204   tree exception_args;                                                  \
 205   int i;                                                                \
 206                                                                         \
 207   if (TREE_PUBLIC (DECL))                                               \
 208     {                                                                   \
 209       fprintf (FILE, "\t.globl ..");                                    \
 210       assemble_name (FILE, NAME);                                       \
 211       fprintf (FILE, "\n");                                             \
 212     }                                                                   \
 213   assemble_name (FILE, NAME);                                           \
 214   fprintf (FILE, ":\n");                                                \
 215   fprintf (FILE, "\t.ualong ..");                                       \
 216   assemble_name (FILE, NAME);                                           \
 217   fprintf (FILE, ",.toc\n");                                            \
 218                                                                         \
 219   fprintf (FILE, "\n#\tFunction: '..");                                 \
 220   assemble_name (FILE, NAME);                                           \
 221   fputs ("'\n", FILE);                                                  \
 222   fputs ("#\tText in section: <default>\n\n", FILE);                    \
 223   fputs ("#\tSetup MS Structured-Exception-Handling\n", FILE);          \
 224   fputs ("\t.pdata\n", FILE);                                           \
 225   fputs ("\t.align 2\n", FILE);                                         \
 226   fputs ("\t.ualong ..", FILE);                                         \
 227   assemble_name (FILE, NAME);                                           \
 228   fputs (",", FILE);                                                    \
 229   assemble_name (FILE, NAME);                                           \
 230   fputs (".e,", FILE);                                                  \
 231   exception_args = lookup_attribute ("exception",                       \
 232                                      TYPE_ATTRIBUTES (TREE_TYPE (DECL))); \
 233                                                                         \
 234   if (exception_args)                                                   \
 235     exception_args = TREE_VALUE (exception_args);                       \
 236                                                                         \
 237   for (i = 0; i < 2; i++)                                               \
 238     {                                                                   \
 239       if (!exception_args)                                              \
 240         fputs ("0,", FILE);                                             \
 241       else                                                              \
 242         {                                                               \
 243           tree field = TREE_VALUE (exception_args);                     \
 244           exception_args = TREE_PURPOSE (exception_args);               \
 245           if (TREE_CODE (field) == STRING_CST)                          \
 246             fprintf (FILE, "%.*s,", TREE_STRING_LENGTH (field),         \
 247                      TREE_STRING_POINTER (field));                      \
 248           else if (TREE_CODE (field) == IDENTIFIER_NODE)                \
 249             fprintf (FILE, "%.*s,", IDENTIFIER_LENGTH (field),          \
 250                      IDENTIFIER_POINTER (field));                       \
 251           else                                                          \
 252             abort ();                                                   \
 253         }                                                               \
 254     }                                                                   \
 255                                                                         \
 256   assemble_name (FILE, NAME);                                           \
 257   fprintf (FILE, ".b\n\n");                                             \
 258   fprintf (FILE, "#\tSwitch to the relocation section\n");              \
 259   fprintf (FILE, "\t.reldata\n");                                       \
 260                                                                         \
 261   if (lookup_attribute ("dllexport",                                    \
 262                         TYPE_ATTRIBUTES (TREE_TYPE (DECL))))            \
 263     {                                                                   \
 264       fprintf (FILE, "\t.globl __imp_");                                \
 265       assemble_name (FILE, NAME);                                       \
 266       fprintf (FILE, "\n__imp_");                                       \
 267       assemble_name (FILE, NAME);                                       \
 268       fprintf (FILE, ":\n\t.ulong ");                                   \
 269       assemble_name (FILE, NAME);                                       \
 270       fprintf (FILE, "\n");                                             \
 271     }                                                                   \
 272                                                                         \
 273   fprintf (FILE, "\t.section .text\n\t.align 2\n..");                   \
 274   assemble_name (FILE, NAME);                                           \
 275   fprintf (FILE, ":\n");                                                \
 276   fprintf (FILE, "\t.function\t..");                                    \
 277   assemble_name (FILE, NAME);                                           \
 278   fprintf (FILE, "\n");                                                 \
 279 }
 280
 281 /* This is how to output an assembler line defining a `double' constant.  */
 282
 283 #undef  ASM_OUTPUT_DOUBLE
 284 #define ASM_OUTPUT_DOUBLE(FILE, VALUE)                                  \
 285   {                                                                     \
 286     if (REAL_VALUE_ISINF (VALUE)                                        \
 287         || REAL_VALUE_ISNAN (VALUE)                                     \
 288         || REAL_VALUE_MINUS_ZERO (VALUE))                               \
 289       {                                                                 \
 290         long t[2];                                                      \
 291         REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t);                       \
 292         fprintf (FILE, "\t.ualong 0x%lx\n\t.long 0x%lx\n",              \
 293                 t[0] & 0xffffffff, t[1] & 0xffffffff);                  \
 294       }                                                                 \
 295     else                                                                \
 296       {                                                                 \
 297         char str[30];                                                   \
 298         REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", str);                    \
 299         fprintf (FILE, "\t.double %s\n", str);                          \
 300       }                                                                 \
 301   }
 302
 303 /* This is how to output an assembler line defining a `float' constant.  */
 304
 305 #undef  ASM_OUTPUT_FLOAT
 306 #define ASM_OUTPUT_FLOAT(FILE, VALUE)                                   \
 307   {                                                                     \
 308     if (REAL_VALUE_ISINF (VALUE)                                        \
 309         || REAL_VALUE_ISNAN (VALUE)                                     \
 310         || REAL_VALUE_MINUS_ZERO (VALUE))                               \
 311       {                                                                 \
 312         long t;                                                         \
 313         REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t);                       \
 314         fprintf (FILE, "\t.ualong 0x%lx\n", t & 0xffffffff);            \
 315       }                                                                 \
 316     else                                                                \
 317       {                                                                 \
 318         char str[30];                                                   \
 319         REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", str);                  \
 320         fprintf (FILE, "\t.float %s\n", str);                           \
 321       }                                                                 \
 322   }
 323
 324 /* Output before instructions.  */
 325 #undef TEXT_SECTION_ASM_OP
 326 #define TEXT_SECTION_ASM_OP "\t.text"
 327
 328 /* Output before writable data.  */
 329 #undef DATA_SECTION_ASM_OP
 330 #define DATA_SECTION_ASM_OP "\t.data"
 331
 332 /* Output to the bss section.  */
 333 #undef BSS_SECTION_ASM_OP
 334 #define BSS_SECTION_ASM_OP "\t.section .bss"
 335
 336 /* Define the extra sections we need.  We define a dummy TOC section,
 337    plus sections to hold the list of static constructors (.ctors) and
 338    destructors (.dtors).  */
 339
 340 #undef  READONLY_DATA_SECTION
 341 #undef  EXTRA_SECTIONS
 342 #define EXTRA_SECTIONS in_toc, in_ctors, in_dtors
 343
 344 /* Define the routines to implement these extra sections.  */
 345
 346 #undef  EXTRA_SECTION_FUNCTIONS
 347 #define EXTRA_SECTION_FUNCTIONS                                         \
 348   CTORS_SECTION_FUNCTION                                                \
 349   DTORS_SECTION_FUNCTION                                                \
 350   TOC_SECTION_FUNCTION                                                  \
 351
 352 #define TOC_SECTION_FUNCTION                                            \
 353 void                                                                    \
 354 toc_section ()                                                          \
 355 {                                                                       \
 356 }
 357
 358 #define CTORS_SECTION_ASM_OP    ".section\t.ctors"
 359 #define CTORS_SECTION_FUNCTION                                          \
 360 void                                                                    \
 361 ctors_section ()                                                        \
 362 {                                                                       \
 363   if (in_section != in_ctors)                                           \
 364     {                                                                   \
 365       fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP);             \
 366       in_section = in_ctors;                                            \
 367     }                                                                   \
 368 }
 369
 370 #define DTORS_SECTION_ASM_OP    ".section\t.dtors"
 371 #define DTORS_SECTION_FUNCTION                                          \
 372 void                                                                    \
 373 dtors_section ()                                                        \
 374 {                                                                       \
 375   if (in_section != in_dtors)                                           \
 376     {                                                                   \
 377       fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP);             \
 378       in_section = in_dtors;                                            \
 379     }                                                                   \
 380 }
 381
 382 #undef SELECT_SECTION
 383 #undef SELECT_RTX_SECTION
 384
 385 /* Make sure __main gets called */
 386 #define INVOKE__main 1
 387
 388 /* A C statement (sans semicolon) to output an element in the table of
 389    global constructors.  */
 390 #undef  ASM_OUTPUT_CONSTRUCTOR
 391 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)                               \
 392   do {                                                                  \
 393     ctors_section ();                                                   \
 394     fprintf (FILE, "\t.ualong ");                                       \
 395     assemble_name (FILE, NAME);                                         \
 396     fprintf (FILE, "\n");                                               \
 397   } while (0)
 398
 399 /* A C statement (sans semicolon) to output an element in the table of
 400    global destructors.  */
 401 #undef  ASM_OUTPUT_DESTRUCTOR
 402 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                                \
 403   do {                                                                  \
 404     dtors_section ();                                                   \
 405     fprintf (FILE, "\t.ualong ");                                       \
 406     assemble_name (FILE, NAME);                                         \
 407     fprintf (FILE, "\n");                                               \
 408   } while (0)
 409
 410
 411 /* Text to write out after a CALL that may be replaced by glue code by
 412    the loader.  The motorola asm demands that, for dll support, a .znop
 413    be issued after a bl instruction, and the symbol on the .znop is the
 414    symbol on the bl instruction */
 415
 416 #undef RS6000_CALL_GLUE
 417 #define RS6000_CALL_GLUE "nop #\tFIXME: only works for non-dll calls."
 418
 419 #define RS6000_CALL_GLUE2 ".znop "
 420
 421 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY
 422
 423 /* Output something to declare an external symbol to the assembler.  Most
 424    assemblers don't need this.  */
 425
 426 #undef ASM_OUTPUT_EXTERNAL
 427
 428 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                           \
 429 {                                                                       \
 430   char *_name;                                                          \
 431   rtx _symref = XEXP (DECL_RTL (DECL), 0);                              \
 432   if ((TREE_CODE (DECL) == VAR_DECL                                     \
 433        || TREE_CODE (DECL) == FUNCTION_DECL)                            \
 434       && (NAME)[strlen (NAME) - 1] != ']')                              \
 435     {                                                                   \
 436       _name = (char *) permalloc (strlen (XSTR (_symref, 0)) + 5);      \
 437       strcpy (_name, XSTR (_symref, 0));                                \
 438       XSTR (_symref, 0) = _name;                                        \
 439     }                                                                   \
 440   else                                                                  \
 441     _name = XSTR (_symref, 0);                                          \
 442                                                                         \
 443   if (DECL_FUNCTION_CODE (DECL) == 0)                                   \
 444     {                                                                   \
 445       fputs ("\t.extern ", FILE);                                       \
 446       assemble_name (FILE, _name);                                      \
 447       putc ('\n', FILE);                                                \
 448       if (TREE_CODE (DECL) == FUNCTION_DECL)                            \
 449         {                                                               \
 450           fputs ("\t.extern ..", FILE);                                 \
 451           assemble_name (FILE, _name);                                  \
 452           putc ('\n', FILE);                                            \
 453         }                                                               \
 454     }                                                                   \
 455 }
 456
 457 /* Similar, but for libcall.  We only have to worry about the function name,
 458    not that of the descriptor. */
 459
 460 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 461
 462 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)  \
 463 { fprintf (FILE, "\t.extern ..");               \
 464   assemble_name (FILE, XSTR (FUN, 0));          \
 465   fprintf (FILE, "\n");                         \
 466 }
 467
 468
 469 /* Eliminate AIX style constant pool processing */
 470 #undef  LEGITIMATE_CONSTANT_POOL_BASE_P
 471 #define LEGITIMATE_CONSTANT_POOL_BASE_P(X) 0
 472
 473 #undef  LEGITIMATE_CONSTANT_POOL_ADDRESS_P
 474 #define LEGITIMATE_CONSTANT_POOL_ADDRESS_P(X) 0
 475
 476 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY
 477
 478 #undef  ASM_IDENTIFY_GCC
 479 #define ASM_IDENTIFY_GCC(x)
 480
 481 #undef  HAS_INIT_SECTION
 482 #define HAS_INIT_SECTION