tools/winebuild/spec16.c

   1 /*
   2  * 16-bit spec files
   3  *
   4  * Copyright 1993 Robert J. Amstadt
   5  * Copyright 1995 Martin von Loewis
   6  * Copyright 1995, 1996, 1997 Alexandre Julliard
   7  * Copyright 1997 Eric Youngdale
   8  * Copyright 1999 Ulrich Weigand
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include <assert.h>
  29 #include <ctype.h>
  30
  31 #include "wine/winbase16.h"
  32
  33 #include "build.h"
  34
  35 /* sequences of nops to fill a certain number of words */
  36 static const char * const nop_sequence[4] =
  37 {
  38     ".byte 0x89,0xf6",  /* mov %esi,%esi */
  39     ".byte 0x8d,0x74,0x26,0x00",  /* lea 0x00(%esi),%esi */
  40     ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00",  /* lea 0x00000000(%esi),%esi */
  41     ".byte 0x8d,0x74,0x26,0x00,0x8d,0x74,0x26,0x00" /* lea 0x00(%esi),%esi; lea 0x00(%esi),%esi */
  42 };
  43
  44 static inline int is_function( const ORDDEF *odp )
  45 {
  46     return (odp->type == TYPE_CDECL ||
  47             odp->type == TYPE_PASCAL ||
  48             odp->type == TYPE_VARARGS ||
  49             odp->type == TYPE_STUB);
  50 }
  51
  52 /*******************************************************************
  53  *         output_entries
  54  *
  55  * Output entries for individual symbols in the entry table.
  56  */
  57 static void output_entries( DLLSPEC *spec, int first, int count )
  58 {
  59     int i;
  60
  61     for (i = 0; i < count; i++)
  62     {
  63         ORDDEF *odp = spec->ordinals[first + i];
  64         output( "\t.byte 0x03\n" );  /* flags: exported & public data */
  65         switch (odp->type)
  66         {
  67         case TYPE_CDECL:
  68         case TYPE_PASCAL:
  69         case TYPE_VARARGS:
  70         case TYPE_STUB:
  71             output( "\t%s .L__wine_%s_%u-.L__wine_spec_code_segment\n",
  72                      get_asm_short_keyword(),
  73                      make_c_identifier(spec->dll_name), first + i );
  74             break;
  75         case TYPE_VARIABLE:
  76             output( "\t%s .L__wine_%s_%u-.L__wine_spec_data_segment\n",
  77                      get_asm_short_keyword(),
  78                      make_c_identifier(spec->dll_name), first + i );
  79             break;
  80         case TYPE_ABS:
  81             output( "\t%s 0x%04x  /* %s */\n",
  82                      get_asm_short_keyword(), odp->u.abs.value, odp->name );
  83             break;
  84         default:
  85             assert(0);
  86         }
  87     }
  88 }
  89
  90
  91 /*******************************************************************
  92  *         output_entry_table
  93  */
  94 static void output_entry_table( DLLSPEC *spec )
  95 {
  96     int i, prev = 0, prev_sel = -1, bundle_count = 0;
  97
  98     for (i = 1; i <= spec->limit; i++)
  99     {
 100         int selector = 0;
 101         ORDDEF *odp = spec->ordinals[i];
 102         if (!odp) continue;
 103
 104         switch (odp->type)
 105         {
 106         case TYPE_CDECL:
 107         case TYPE_PASCAL:
 108         case TYPE_VARARGS:
 109         case TYPE_STUB:
 110             selector = 1;  /* Code selector */
 111             break;
 112         case TYPE_VARIABLE:
 113             selector = 2;  /* Data selector */
 114             break;
 115         case TYPE_ABS:
 116             selector = 0xfe;  /* Constant selector */
 117             break;
 118         default:
 119             continue;
 120         }
 121
 122         if (prev + 1 != i || prev_sel != selector || bundle_count == 255)
 123         {
 124             /* need to start a new bundle */
 125
 126             /* flush previous bundle */
 127             if (bundle_count)
 128             {
 129                 output( "\t/* %s.%d - %s.%d */\n",
 130                          spec->dll_name, prev - bundle_count + 1, spec->dll_name, prev );
 131                 output( "\t.byte 0x%02x,0x%02x\n", bundle_count, prev_sel );
 132                 output_entries( spec, prev - bundle_count + 1, bundle_count );
 133             }
 134
 135             if (prev + 1 != i)
 136             {
 137                 int skip = i - (prev + 1);
 138                 while (skip > 255)
 139                 {
 140                     output( "\t.byte 0xff,0x00\n" );
 141                     skip -= 255;
 142                 }
 143                 output( "\t.byte 0x%02x,0x00\n", skip );
 144             }
 145
 146             bundle_count = 0;
 147             prev_sel = selector;
 148         }
 149         bundle_count++;
 150         prev = i;
 151     }
 152
 153     /* flush last bundle */
 154     if (bundle_count)
 155     {
 156         output( "\t.byte 0x%02x,0x%02x\n", bundle_count, prev_sel );
 157         output_entries( spec, prev - bundle_count + 1, bundle_count );
 158     }
 159     output( "\t.byte 0x00\n" );
 160 }
 161
 162
 163 /*******************************************************************
 164  *         output_resident_name
 165  */
 166 static void output_resident_name( const char *string, int ordinal )
 167 {
 168     unsigned int i, len = strlen(string);
 169
 170     output( "\t.byte 0x%02x", len );
 171     for (i = 0; i < len; i++) output( ",0x%02x", (unsigned char)toupper(string[i]) );
 172     output( " /* %s */\n", string );
 173     output( "\t%s %u\n", get_asm_short_keyword(), ordinal );
 174 }
 175
 176
 177 /*******************************************************************
 178  *         get_callfrom16_name
 179  */
 180 static const char *get_callfrom16_name( const ORDDEF *odp )
 181 {
 182     static char buffer[80];
 183
 184     sprintf( buffer, "%s_%s_%s",
 185              (odp->type == TYPE_PASCAL) ? "p" :
 186              (odp->type == TYPE_VARARGS) ? "v" : "c",
 187              (odp->flags & FLAG_REGISTER) ? "regs" :
 188              (odp->flags & FLAG_RET16) ? "word" : "long",
 189              odp->u.func.arg_types );
 190     return buffer;
 191 }
 192
 193
 194 /*******************************************************************
 195  *         get_relay_name
 196  */
 197 static const char *get_relay_name( const ORDDEF *odp )
 198 {
 199     static char buffer[80];
 200     char *p;
 201
 202     switch(odp->type)
 203     {
 204     case TYPE_PASCAL:
 205         strcpy( buffer, "p_" );
 206         break;
 207     case TYPE_VARARGS:
 208         strcpy( buffer, "v_" );
 209         break;
 210     case TYPE_CDECL:
 211     case TYPE_STUB:
 212         strcpy( buffer, "c_" );
 213         break;
 214     default:
 215         assert(0);
 216     }
 217     strcat( buffer, odp->u.func.arg_types );
 218     for (p = buffer + 2; *p; p++)
 219     {
 220         /* map string types to the corresponding plain pointer type */
 221         if (*p == 't') *p = 'p';
 222         else if (*p == 'T') *p = 'l';
 223     }
 224     if (odp->flags & FLAG_REGISTER) strcat( buffer, "_regs" );
 225     return buffer;
 226 }
 227
 228
 229 /*******************************************************************
 230  *         get_function_argsize
 231  */
 232 static int get_function_argsize( const ORDDEF *odp )
 233 {
 234     const char *args;
 235     int argsize = 0;
 236
 237     for (args = odp->u.func.arg_types; *args; args++)
 238     {
 239         switch (*args)
 240         {
 241         case 'w':  /* word */
 242         case 's':  /* s_word */
 243             argsize += 2;
 244             break;
 245         case 'l':  /* long or segmented pointer */
 246         case 'T':  /* segmented pointer to null-terminated string */
 247         case 'p':  /* linear pointer */
 248         case 't':  /* linear pointer to null-terminated string */
 249             argsize += 4;
 250             break;
 251         default:
 252             assert(0);
 253         }
 254     }
 255     return argsize;
 256 }
 257
 258
 259 /*******************************************************************
 260  *         output_call16_function
 261  *
 262  * Build a 16-bit-to-Wine callback glue function.
 263  *
 264  * The generated routines are intended to be used as argument conversion
 265  * routines to be called by the CallFrom16... core. Thus, the prototypes of
 266  * the generated routines are (see also CallFrom16):
 267  *
 268  *  extern WORD WINAPI __wine_spec_call16_C_xxx( FARPROC func, LPBYTE args );
 269  *  extern LONG WINAPI __wine_spec_call16_C_xxx( FARPROC func, LPBYTE args );
 270  *  extern void WINAPI __wine_spec_call16_C_xxx_regs( FARPROC func, LPBYTE args, CONTEXT86 *context );
 271  *
 272  * where 'C' is the calling convention ('p' for pascal or 'c' for cdecl),
 273  * and each 'x' is an argument  ('w'=word, 's'=signed word, 'l'=long,
 274  * 'p'=linear pointer, 't'=linear pointer to null-terminated string,
 275  * 'T'=segmented pointer to null-terminated string).
 276  *
 277  * The generated routines fetch the arguments from the 16-bit stack (pointed
 278  * to by 'args'); the offsets of the single argument values are computed
 279  * according to the calling convention and the argument types.  Then, the
 280  * 32-bit entry point is called with these arguments.
 281  *
 282  * For register functions, the arguments (if present) are converted just
 283  * the same as for normal functions, but in addition the CONTEXT86 pointer
 284  * filled with the current register values is passed to the 32-bit routine.
 285  */
 286 static void output_call16_function( ORDDEF *odp )
 287 {
 288     char name[256];
 289     int i, pos, stack_words;
 290     const char *args = odp->u.func.arg_types;
 291     int argsize = get_function_argsize( odp );
 292     int needs_ldt = strchr( args, 'p' ) || strchr( args, 't' );
 293
 294     sprintf( name, ".L__wine_spec_call16_%s", get_relay_name(odp) );
 295
 296     output( "\t.align %d\n", get_alignment(4) );
 297     output( "\t%s\n", func_declaration(name) );
 298     output( "%s:\n", name );
 299     output( "\tpushl %%ebp\n" );
 300     output( "\tmovl %%esp,%%ebp\n" );
 301     stack_words = 2;
 302     if (needs_ldt)
 303     {
 304         output( "\tpushl %%esi\n" );
 305         stack_words++;
 306         if (UsePIC)
 307         {
 308             output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") );
 309             output( "1:\tmovl wine_ldt_copy_ptr-1b(%%eax),%%esi\n" );
 310         }
 311         else
 312             output( "\tmovl $%s,%%esi\n", asm_name("wine_ldt_copy") );
 313     }
 314
 315     /* preserve 16-byte stack alignment */
 316     stack_words += strlen(args);
 317     if ((odp->flags & FLAG_REGISTER) || (odp->type == TYPE_VARARGS)) stack_words++;
 318     if (stack_words % 4) output( "\tsubl $%d,%%esp\n", 16 - 4 * (stack_words % 4) );
 319
 320     if (args[0] || odp->type == TYPE_VARARGS)
 321         output( "\tmovl 12(%%ebp),%%ecx\n" );  /* args */
 322
 323     if (odp->flags & FLAG_REGISTER)
 324     {
 325         output( "\tpushl 16(%%ebp)\n" );  /* context */
 326     }
 327     else if (odp->type == TYPE_VARARGS)
 328     {
 329         output( "\tleal %d(%%ecx),%%eax\n", argsize );
 330         output( "\tpushl %%eax\n" );  /* va_list16 */
 331     }
 332
 333     pos = (odp->type == TYPE_PASCAL) ? 0 : argsize;
 334     for (i = strlen(args) - 1; i >= 0; i--)
 335     {
 336         switch (args[i])
 337         {
 338         case 'w':  /* word */
 339             if (odp->type != TYPE_PASCAL) pos -= 2;
 340             output( "\tmovzwl %d(%%ecx),%%eax\n", pos );
 341             output( "\tpushl %%eax\n" );
 342             if (odp->type == TYPE_PASCAL) pos += 2;
 343             break;
 344
 345         case 's':  /* s_word */
 346             if (odp->type != TYPE_PASCAL) pos -= 2;
 347             output( "\tmovswl %d(%%ecx),%%eax\n", pos );
 348             output( "\tpushl %%eax\n" );
 349             if (odp->type == TYPE_PASCAL) pos += 2;
 350             break;
 351
 352         case 'l':  /* long or segmented pointer */
 353         case 'T':  /* segmented pointer to null-terminated string */
 354             if (odp->type != TYPE_PASCAL) pos -= 4;
 355             output( "\tpushl %d(%%ecx)\n", pos );
 356             if (odp->type == TYPE_PASCAL) pos += 4;
 357             break;
 358
 359         case 'p':  /* linear pointer */
 360         case 't':  /* linear pointer to null-terminated string */
 361             if (odp->type != TYPE_PASCAL) pos -= 4;
 362             output( "\tmovzwl %d(%%ecx),%%edx\n", pos + 2 ); /* sel */
 363             output( "\tshr $3,%%edx\n" );
 364             output( "\tmovzwl %d(%%ecx),%%eax\n", pos ); /* offset */
 365             output( "\taddl (%%esi,%%edx,4),%%eax\n" );
 366             output( "\tpushl %%eax\n" );
 367             if (odp->type == TYPE_PASCAL) pos += 4;
 368             break;
 369
 370         default:
 371             assert(0);
 372         }
 373     }
 374
 375     output( "\tcall *8(%%ebp)\n" );
 376
 377     if (needs_ldt) output( "\tmovl -4(%%ebp),%%esi\n" );
 378
 379     output( "\tleave\n" );
 380     output( "\tret\n" );
 381     output_function_size( name );
 382 }
 383
 384
 385 /*******************************************************************
 386  *         callfrom16_type_compare
 387  *
 388  * Compare two callfrom16 sequences.
 389  */
 390 static int callfrom16_type_compare( const void *e1, const void *e2 )
 391 {
 392     const ORDDEF *odp1 = *(const ORDDEF * const *)e1;
 393     const ORDDEF *odp2 = *(const ORDDEF * const *)e2;
 394     int retval;
 395     int type1 = odp1->type;
 396     int type2 = odp2->type;
 397
 398     if (type1 == TYPE_STUB) type1 = TYPE_CDECL;
 399     if (type2 == TYPE_STUB) type2 = TYPE_CDECL;
 400
 401     if ((retval = type1 - type2) != 0) return retval;
 402
 403     type1 = odp1->flags & (FLAG_RET16|FLAG_REGISTER);
 404     type2 = odp2->flags & (FLAG_RET16|FLAG_REGISTER);
 405
 406     if ((retval = type1 - type2) != 0) return retval;
 407
 408     return strcmp( odp1->u.func.arg_types, odp2->u.func.arg_types );
 409 }
 410
 411
 412 /*******************************************************************
 413  *         relay_type_compare
 414  *
 415  * Same as callfrom16_type_compare but ignores differences that don't affect the resulting relay function.
 416  */
 417 static int relay_type_compare( const void *e1, const void *e2 )
 418 {
 419     const ORDDEF *odp1 = *(const ORDDEF * const *)e1;
 420     const ORDDEF *odp2 = *(const ORDDEF * const *)e2;
 421     char name1[80];
 422
 423     strcpy( name1, get_relay_name(odp1) );
 424     return strcmp( name1, get_relay_name(odp2) );
 425 }
 426
 427
 428 /*******************************************************************
 429  *         sort_func_list
 430  *
 431  * Sort a list of functions, removing duplicates.
 432  */
 433 static int sort_func_list( ORDDEF **list, int count,
 434                            int (*compare)(const void *, const void *) )
 435 {
 436     int i, j;
 437
 438     if (!count) return 0;
 439     qsort( list, count, sizeof(*list), compare );
 440
 441     for (i = j = 0; i < count; i++)
 442     {
 443         if (compare( &list[j], &list[i] )) list[++j] = list[i];
 444     }
 445     return j + 1;
 446 }
 447
 448
 449 /*******************************************************************
 450  *         output_init_code
 451  *
 452  * Output the dll initialization code.
 453  */
 454 static void output_init_code( const DLLSPEC *spec, const char *header_name )
 455 {
 456     char name[80];
 457
 458     sprintf( name, ".L__wine_spec_%s_init", make_c_identifier(spec->dll_name) );
 459
 460     output( "\n/* dll initialization code */\n\n" );
 461     output( "\t.text\n" );
 462     output( "\t.align 4\n" );
 463     output( "\t%s\n", func_declaration(name) );
 464     output( "%s:\n", name );
 465     output( "\tsubl $4,%%esp\n" );
 466     if (UsePIC)
 467     {
 468         output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") );
 469         output( "1:\tleal .L__wine_spec_file_name-1b(%%eax),%%ecx\n" );
 470         output( "\tpushl %%ecx\n" );
 471         output( "\tleal %s-1b(%%eax),%%ecx\n", header_name );
 472         output( "\tpushl %%ecx\n" );
 473     }
 474     else
 475     {
 476         output( "\tpushl $.L__wine_spec_file_name\n" );
 477         output( "\tpushl $%s\n", header_name );
 478     }
 479     output( "\tcall %s\n", asm_name("__wine_dll_register_16") );
 480     output( "\taddl $12,%%esp\n" );
 481     output( "\tret\n" );
 482     output_function_size( name );
 483
 484     sprintf( name, ".L__wine_spec_%s_fini", make_c_identifier(spec->dll_name) );
 485
 486     output( "\t.align 4\n" );
 487     output( "\t%s\n", func_declaration(name) );
 488     output( "%s:\n", name );
 489     output( "\tsubl $8,%%esp\n" );
 490     if (UsePIC)
 491     {
 492         output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") );
 493         output( "1:\tleal %s-1b(%%eax),%%ecx\n", header_name );
 494         output( "\tpushl %%ecx\n" );
 495     }
 496     else
 497     {
 498         output( "\tpushl $%s\n", header_name );
 499     }
 500     output( "\tcall %s\n", asm_name("__wine_dll_unregister_16") );
 501     output( "\taddl $12,%%esp\n" );
 502     output( "\tret\n" );
 503     output_function_size( name );
 504
 505     if (target_platform == PLATFORM_APPLE)
 506     {
 507         output( "\t.mod_init_func\n" );
 508         output( "\t.align %d\n", get_alignment(4) );
 509         output( "\t.long .L__wine_spec_%s_init\n", make_c_identifier(spec->dll_name) );
 510         output( "\t.mod_term_func\n" );
 511         output( "\t.align %d\n", get_alignment(4) );
 512         output( "\t.long .L__wine_spec_%s_fini\n", make_c_identifier(spec->dll_name) );
 513     }
 514     else
 515     {
 516         output( "\t.section \".init\",\"ax\"\n" );
 517         output( "\tcall .L__wine_spec_%s_init\n", make_c_identifier(spec->dll_name) );
 518         output( "\t.section \".fini\",\"ax\"\n" );
 519         output( "\tcall .L__wine_spec_%s_fini\n", make_c_identifier(spec->dll_name) );
 520     }
 521 }
 522
 523
 524 /*******************************************************************
 525  *         BuildSpec16File
 526  *
 527  * Build a Win16 assembly file from a spec file.
 528  */
 529 void BuildSpec16File( DLLSPEC *spec )
 530 {
 531     ORDDEF **typelist;
 532     ORDDEF *entry_point = NULL;
 533     int i, j, nb_funcs;
 534     char header_name[256];
 535
 536     /* File header */
 537
 538     output_standard_file_header();
 539
 540     if (!spec->file_name)
 541     {
 542         char *p;
 543         spec->file_name = xstrdup( output_file_name );
 544         if ((p = strrchr( spec->file_name, '.' ))) *p = 0;
 545     }
 546     if (!spec->dll_name)  /* set default name from file name */
 547     {
 548         char *p;
 549         spec->dll_name = xstrdup( spec->file_name );
 550         if ((p = strrchr( spec->dll_name, '.' ))) *p = 0;
 551     }
 552
 553     /* store the main entry point as ordinal 0 */
 554
 555     if (!spec->ordinals)
 556     {
 557         spec->ordinals = xmalloc( sizeof(spec->ordinals[0]) );
 558         spec->ordinals[0] = NULL;
 559     }
 560     if (spec->init_func && !(spec->characteristics & IMAGE_FILE_DLL))
 561     {
 562         entry_point = xmalloc( sizeof(*entry_point) );
 563         entry_point->type = TYPE_PASCAL;
 564         entry_point->ordinal = 0;
 565         entry_point->lineno = 0;
 566         entry_point->flags = FLAG_REGISTER;
 567         entry_point->name = NULL;
 568         entry_point->link_name = xstrdup( spec->init_func );
 569         entry_point->export_name = NULL;
 570         entry_point->u.func.arg_types[0] = 0;
 571         assert( !spec->ordinals[0] );
 572         spec->ordinals[0] = entry_point;
 573     }
 574
 575     /* Build sorted list of all argument types, without duplicates */
 576
 577     typelist = xmalloc( (spec->limit + 1) * sizeof(*typelist) );
 578
 579     for (i = nb_funcs = 0; i <= spec->limit; i++)
 580     {
 581         ORDDEF *odp = spec->ordinals[i];
 582         if (!odp) continue;
 583         if (is_function( odp )) typelist[nb_funcs++] = odp;
 584     }
 585
 586     nb_funcs = sort_func_list( typelist, nb_funcs, callfrom16_type_compare );
 587
 588     /* Output the module structure */
 589
 590     sprintf( header_name, "__wine_spec_%s_dos_header", make_c_identifier(spec->dll_name) );
 591     output( "\n/* module data */\n\n" );
 592     output( "\t.data\n" );
 593     output( "\t.align %d\n", get_alignment(4) );
 594     output( "%s:\n", header_name );
 595     output( "\t%s 0x%04x\n", get_asm_short_keyword(),                      /* e_magic */
 596              IMAGE_DOS_SIGNATURE );
 597     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_cblp */
 598     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_cp */
 599     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_crlc */
 600     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_cparhdr */
 601     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_minalloc */
 602     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_maxalloc */
 603     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_ss */
 604     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_sp */
 605     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_csum */
 606     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_ip */
 607     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_cs */
 608     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_lfarlc */
 609     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_ovno */
 610     output( "\t%s 0,0,0,0\n", get_asm_short_keyword() );                   /* e_res */
 611     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_oemid */
 612     output( "\t%s 0\n", get_asm_short_keyword() );                         /* e_oeminfo */
 613     output( "\t%s 0,0,0,0,0,0,0,0,0,0\n", get_asm_short_keyword() );       /* e_res2 */
 614     output( "\t.long .L__wine_spec_ne_header-%s\n", header_name );         /* e_lfanew */
 615
 616     output( ".L__wine_spec_ne_header:\n" );
 617     output( "\t%s 0x%04x\n", get_asm_short_keyword(),                      /* ne_magic */
 618              IMAGE_OS2_SIGNATURE );
 619     output( "\t.byte 0\n" );                                               /* ne_ver */
 620     output( "\t.byte 0\n" );                                               /* ne_rev */
 621     output( "\t%s .L__wine_spec_ne_enttab-.L__wine_spec_ne_header\n",      /* ne_enttab */
 622              get_asm_short_keyword() );
 623     output( "\t%s .L__wine_spec_ne_enttab_end-.L__wine_spec_ne_enttab\n",  /* ne_cbenttab */
 624              get_asm_short_keyword() );
 625     output( "\t.long 0\n" );                                               /* ne_crc */
 626     output( "\t%s 0x%04x\n", get_asm_short_keyword(),                      /* ne_flags */
 627              NE_FFLAGS_SINGLEDATA |
 628              ((spec->characteristics & IMAGE_FILE_DLL) ? NE_FFLAGS_LIBMODULE : 0) );
 629     output( "\t%s 2\n", get_asm_short_keyword() );                         /* ne_autodata */
 630     output( "\t%s %u\n", get_asm_short_keyword(), spec->heap_size );       /* ne_heap */
 631     output( "\t%s 0\n", get_asm_short_keyword() );                         /* ne_stack */
 632     if (!entry_point) output( "\t.long 0\n" );                             /* ne_csip */
 633     else output( "\t%s .L__wine_%s_0-.L__wine_spec_code_segment,1\n",
 634                  get_asm_short_keyword(), make_c_identifier(spec->dll_name) );
 635     output( "\t%s 0,2\n", get_asm_short_keyword() );                       /* ne_sssp */
 636     output( "\t%s 2\n", get_asm_short_keyword() );                         /* ne_cseg */
 637     output( "\t%s 0\n", get_asm_short_keyword() );                         /* ne_cmod */
 638     output( "\t%s 0\n", get_asm_short_keyword() );                         /* ne_cbnrestab */
 639     output( "\t%s .L__wine_spec_ne_segtab-.L__wine_spec_ne_header\n",      /* ne_segtab */
 640              get_asm_short_keyword() );
 641     output( "\t%s .L__wine_spec_ne_rsrctab-.L__wine_spec_ne_header\n",     /* ne_rsrctab */
 642              get_asm_short_keyword() );
 643     output( "\t%s .L__wine_spec_ne_restab-.L__wine_spec_ne_header\n",      /* ne_restab */
 644              get_asm_short_keyword() );
 645     output( "\t%s .L__wine_spec_ne_modtab-.L__wine_spec_ne_header\n",      /* ne_modtab */
 646              get_asm_short_keyword() );
 647     output( "\t%s .L__wine_spec_ne_imptab-.L__wine_spec_ne_header\n",      /* ne_imptab */
 648              get_asm_short_keyword() );
 649     output( "\t.long 0\n" );                                   /* ne_nrestab */
 650     output( "\t%s 0\n", get_asm_short_keyword() );             /* ne_cmovent */
 651     output( "\t%s 0\n", get_asm_short_keyword() );             /* ne_align */
 652     output( "\t%s 0\n", get_asm_short_keyword() );             /* ne_cres */
 653     output( "\t.byte 0x%02x\n", NE_OSFLAGS_WINDOWS );          /* ne_exetyp */
 654     output( "\t.byte 0x%02x\n", NE_AFLAGS_FASTLOAD );          /* ne_flagsothers */
 655     output( "\t%s 0\n", get_asm_short_keyword() );             /* ne_pretthunks */
 656     output( "\t%s 0\n", get_asm_short_keyword() );             /* ne_psegrefbytes */
 657     output( "\t%s 0\n", get_asm_short_keyword() );             /* ne_swaparea */
 658     output( "\t%s 0\n", get_asm_short_keyword() );             /* ne_expver */
 659
 660     /* segment table */
 661
 662     output( "\n.L__wine_spec_ne_segtab:\n" );
 663
 664     /* code segment entry */
 665
 666     output( "\t%s .L__wine_spec_code_segment-%s\n",  /* filepos */
 667              get_asm_short_keyword(), header_name );
 668     output( "\t%s .L__wine_spec_code_segment_end-.L__wine_spec_code_segment\n", /* size */
 669              get_asm_short_keyword() );
 670     output( "\t%s 0x%04x\n", get_asm_short_keyword(), NE_SEGFLAGS_32BIT );      /* flags */
 671     output( "\t%s .L__wine_spec_code_segment_end-.L__wine_spec_code_segment\n", /* minsize */
 672              get_asm_short_keyword() );
 673
 674     /* data segment entry */
 675
 676     output( "\t%s .L__wine_spec_data_segment-%s\n",  /* filepos */
 677              get_asm_short_keyword(), header_name );
 678     output( "\t%s .L__wine_spec_data_segment_end-.L__wine_spec_data_segment\n", /* size */
 679              get_asm_short_keyword() );
 680     output( "\t%s 0x%04x\n", get_asm_short_keyword(), NE_SEGFLAGS_DATA );      /* flags */
 681     output( "\t%s .L__wine_spec_data_segment_end-.L__wine_spec_data_segment\n", /* minsize */
 682              get_asm_short_keyword() );
 683
 684     /* resource directory */
 685
 686     output_res16_directory( spec, header_name );
 687
 688     /* resident names table */
 689
 690     output( "\n\t.align %d\n", get_alignment(2) );
 691     output( ".L__wine_spec_ne_restab:\n" );
 692     output_resident_name( spec->dll_name, 0 );
 693     for (i = 1; i <= spec->limit; i++)
 694     {
 695         ORDDEF *odp = spec->ordinals[i];
 696         if (!odp || !odp->name[0]) continue;
 697         output_resident_name( odp->name, i );
 698     }
 699     output( "\t.byte 0\n" );
 700
 701     /* imported names table */
 702
 703     output( "\n\t.align %d\n", get_alignment(2) );
 704     output( ".L__wine_spec_ne_modtab:\n" );
 705     output( ".L__wine_spec_ne_imptab:\n" );
 706     output( "\t.byte 0,0\n" );
 707
 708     /* entry table */
 709
 710     output( "\n.L__wine_spec_ne_enttab:\n" );
 711     output_entry_table( spec );
 712     output( ".L__wine_spec_ne_enttab_end:\n" );
 713
 714     /* code segment */
 715
 716     output( "\n\t.align %d\n", get_alignment(2) );
 717     output( ".L__wine_spec_code_segment:\n" );
 718
 719     for ( i = 0; i < nb_funcs; i++ )
 720     {
 721         unsigned int arg_types[2];
 722         int nop_words, argsize = 0;
 723
 724         if ( typelist[i]->type == TYPE_PASCAL )
 725             argsize = get_function_argsize( typelist[i] );
 726
 727         /* build the arg types bit fields */
 728         arg_types[0] = arg_types[1] = 0;
 729         for (j = 0; typelist[i]->u.func.arg_types[j]; j++)
 730         {
 731             int type = 0;
 732             switch(typelist[i]->u.func.arg_types[j])
 733             {
 734             case 'w': type = ARG_WORD; break;
 735             case 's': type = ARG_SWORD; break;
 736             case 'l': type = ARG_LONG; break;
 737             case 'p': type = ARG_PTR; break;
 738             case 't': type = ARG_STR; break;
 739             case 'T': type = ARG_SEGSTR; break;
 740             }
 741             arg_types[j / 10] |= type << (3 * (j % 10));
 742         }
 743         if (typelist[i]->type == TYPE_VARARGS) arg_types[j / 10] |= ARG_VARARG << (3 * (j % 10));
 744
 745         output( ".L__wine_spec_callfrom16_%s:\n", get_callfrom16_name(typelist[i]) );
 746         output( "\tpushl $.L__wine_spec_call16_%s\n", get_relay_name(typelist[i]) );
 747         output( "\tlcall $0,$0\n" );
 748
 749         if (typelist[i]->flags & FLAG_REGISTER)
 750         {
 751             nop_words = 4;
 752         }
 753         else if (typelist[i]->flags & FLAG_RET16)
 754         {
 755             output( "\torw %%ax,%%ax\n" );
 756             output( "\tnop\n" );  /* so that the lretw is aligned */
 757             nop_words = 2;
 758         }
 759         else
 760         {
 761             output( "\tshld $16,%%eax,%%edx\n" );
 762             output( "\torl %%eax,%%eax\n" );
 763             nop_words = 1;
 764         }
 765
 766         if (argsize)
 767         {
 768             output( "\tlretw $%u\n", argsize );
 769             nop_words--;
 770         }
 771         else output( "\tlretw\n" );
 772
 773         if (nop_words) output( "\t%s\n", nop_sequence[nop_words-1] );
 774
 775         /* the movl is here so that the code contains only valid instructions, */
 776         /* it's never actually executed, we only care about the arg_types[] values */
 777         output( "\t%s 0x86c7\n", get_asm_short_keyword() );
 778         output( "\t.long 0x%08x,0x%08x\n", arg_types[0], arg_types[1] );
 779     }
 780
 781     for (i = 0; i <= spec->limit; i++)
 782     {
 783         ORDDEF *odp = spec->ordinals[i];
 784         if (!odp || !is_function( odp )) continue;
 785         output( ".L__wine_%s_%u:\n", make_c_identifier(spec->dll_name), i );
 786         output( "\tpushw %%bp\n" );
 787         output( "\tpushl $%s\n",
 788                  asm_name( odp->type == TYPE_STUB ? get_stub_name( odp, spec ) : odp->link_name ));
 789         output( "\tcallw .L__wine_spec_callfrom16_%s\n", get_callfrom16_name( odp ) );
 790     }
 791     output( ".L__wine_spec_code_segment_end:\n" );
 792
 793     /* data segment */
 794
 795     output( "\n.L__wine_spec_data_segment:\n" );
 796     output( "\t.byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0\n" );  /* instance data */
 797     for (i = 0; i <= spec->limit; i++)
 798     {
 799         ORDDEF *odp = spec->ordinals[i];
 800         if (!odp || odp->type != TYPE_VARIABLE) continue;
 801         output( ".L__wine_%s_%u:\n", make_c_identifier(spec->dll_name), i );
 802         output( "\t.long " );
 803         for (j = 0; j < odp->u.var.n_values-1; j++)
 804             output( "0x%08x,", odp->u.var.values[j] );
 805         output( "0x%08x\n", odp->u.var.values[j] );
 806     }
 807     output( ".L__wine_spec_data_segment_end:\n" );
 808
 809     /* resource data */
 810
 811     if (spec->nb_resources)
 812     {
 813         output( "\n.L__wine_spec_resource_data:\n" );
 814         output_res16_data( spec );
 815     }
 816
 817     output( "\t.byte 0\n" );  /* make sure the last symbol points to something */
 818
 819     /* relay functions */
 820
 821     nb_funcs = sort_func_list( typelist, nb_funcs, relay_type_compare );
 822     if (nb_funcs)
 823     {
 824         output( "\n/* relay functions */\n\n" );
 825         output( "\t.text\n" );
 826         for ( i = 0; i < nb_funcs; i++ ) output_call16_function( typelist[i] );
 827         output( "\t.data\n" );
 828         output( "wine_ldt_copy_ptr:\n" );
 829         output( "\t.long %s\n", asm_name("wine_ldt_copy") );
 830     }
 831
 832     output( "\n\t%s\n", get_asm_string_section() );
 833     output( ".L__wine_spec_file_name:\n" );
 834     output( "\t%s \"%s\"\n", get_asm_string_keyword(), spec->file_name );
 835
 836     output_stubs( spec );
 837     output_get_pc_thunk();
 838     output_init_code( spec, header_name );
 839     output_gnu_stack_note();
 840
 841     free( typelist );
 842 }