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Fixed segmented/linear buffers manipulation.
[wine/multimedia.git] / tools / build.c
blob994a1cf6e55154f8da6507ac30f5d90d6154e9a3
1 /*
2 * Copyright 1993 Robert J. Amstadt
3 * Copyright 1995 Martin von Loewis
4 * Copyright 1995, 1996, 1997 Alexandre Julliard
5 * Copyright 1997 Eric Youngdale
6 * Copyright 1999 Ulrich Weigand
7 */
8
9 #include "config.h"
10
11 #include <assert.h>
12 #include <stdarg.h>
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <string.h>
16 #include <ctype.h>
17 #include <unistd.h>
18
19 #include "winbase.h"
20 #include "winnt.h"
21 #include "module.h"
22 #include "neexe.h"
23 #include "stackframe.h"
24 #include "builtin16.h"
25 #include "thread.h"
26
27 #ifdef NEED_UNDERSCORE_PREFIX
28 # define PREFIX "_"
29 #else
30 # define PREFIX
31 #endif
32
33 #ifdef HAVE_ASM_STRING
34 # define STRING ".string"
35 #else
36 # define STRING ".ascii"
37 #endif
38
39 #if defined(__GNUC__) && !defined(__svr4__)
40 # define USE_STABS
41 #else
42 # undef USE_STABS
43 #endif
44
45 #ifdef __i386__
46 extern WORD __get_cs(void);
47 extern WORD __get_ds(void);
48 __ASM_GLOBAL_FUNC( __get_cs, "movw %cs,%ax\n\tret" );
49 __ASM_GLOBAL_FUNC( __get_ds, "movw %ds,%ax\n\tret" );
50 #else
51 static inline WORD __get_cs(void) { return 0; }
52 static inline WORD __get_ds(void) { return 0; }
53 #endif
54
55 typedef enum
56 {
57 TYPE_BYTE, /* byte variable (Win16) */
58 TYPE_WORD, /* word variable (Win16) */
59 TYPE_LONG, /* long variable (Win16) */
60 TYPE_PASCAL_16, /* pascal function with 16-bit return (Win16) */
61 TYPE_PASCAL, /* pascal function with 32-bit return (Win16) */
62 TYPE_ABS, /* absolute value (Win16) */
63 TYPE_REGISTER, /* register function */
64 TYPE_INTERRUPT, /* interrupt handler function (Win16) */
65 TYPE_STUB, /* unimplemented stub */
66 TYPE_STDCALL, /* stdcall function (Win32) */
67 TYPE_CDECL, /* cdecl function (Win32) */
68 TYPE_VARARGS, /* varargs function (Win32) */
69 TYPE_EXTERN, /* external symbol (Win32) */
70 TYPE_FORWARD, /* forwarded function (Win32) */
71 TYPE_NBTYPES
72 } ORD_TYPE;
73
74 static const char * const TypeNames[TYPE_NBTYPES] =
75 {
76 "byte", /* TYPE_BYTE */
77 "word", /* TYPE_WORD */
78 "long", /* TYPE_LONG */
79 "pascal16", /* TYPE_PASCAL_16 */
80 "pascal", /* TYPE_PASCAL */
81 "equate", /* TYPE_ABS */
82 "register", /* TYPE_REGISTER */
83 "interrupt", /* TYPE_INTERRUPT */
84 "stub", /* TYPE_STUB */
85 "stdcall", /* TYPE_STDCALL */
86 "cdecl", /* TYPE_CDECL */
87 "varargs", /* TYPE_VARARGS */
88 "extern", /* TYPE_EXTERN */
89 "forward" /* TYPE_FORWARD */
90 };
91
92 #define MAX_ORDINALS 2048
93 #define MAX_IMPORTS 16
94
95 /* Callback function used for stub functions */
96 #define STUB_CALLBACK \
97 ((SpecType == SPEC_WIN16) ? "RELAY_Unimplemented16": "RELAY_Unimplemented32")
98
99 typedef enum
100 {
101 SPEC_INVALID,
102 SPEC_WIN16,
103 SPEC_WIN32
104 } SPEC_TYPE;
105
106 typedef enum
107 {
108 SPEC_MODE_DLL,
109 SPEC_MODE_GUIEXE,
110 SPEC_MODE_CUIEXE
111 } SPEC_MODE;
112
113 typedef struct
114 {
115 int n_values;
116 int *values;
117 } ORD_VARIABLE;
118
119 typedef struct
120 {
121 int n_args;
122 char arg_types[32];
123 char link_name[80];
124 } ORD_FUNCTION;
125
126 typedef struct
127 {
128 int value;
129 } ORD_ABS;
130
131 typedef struct
132 {
133 char link_name[80];
134 } ORD_EXTERN;
135
136 typedef struct
137 {
138 char link_name[80];
139 } ORD_FORWARD;
140
141 typedef struct
142 {
143 ORD_TYPE type;
144 int ordinal;
145 int offset;
146 int lineno;
147 char name[80];
148 union
149 {
150 ORD_VARIABLE var;
151 ORD_FUNCTION func;
152 ORD_ABS abs;
153 ORD_EXTERN ext;
154 ORD_FORWARD fwd;
155 } u;
156 } ORDDEF;
157
158 static ORDDEF EntryPoints[MAX_ORDINALS];
159 static ORDDEF *Ordinals[MAX_ORDINALS];
160 static ORDDEF *Names[MAX_ORDINALS];
161
162 static SPEC_TYPE SpecType = SPEC_INVALID;
163 static SPEC_MODE SpecMode = SPEC_MODE_DLL;
164 static char DLLName[80];
165 static char DLLFileName[80];
166 static int Limit = 0;
167 static int Base = MAX_ORDINALS;
168 static int DLLHeapSize = 0;
169 static FILE *SpecFp;
170 static WORD Code_Selector, Data_Selector;
171 static char DLLInitFunc[80];
172 static char *DLLImports[MAX_IMPORTS];
173 static char rsrc_name[80];
174 static int nb_imports;
175 static int nb_entry_points;
176 static int nb_names;
177 static const char *input_file_name;
178 static const char *output_file_name;
179
180 char *ParseBuffer = NULL;
181 char *ParseNext;
182 char ParseSaveChar;
183 int Line;
184
185 static int UsePIC = 0;
186
187 static int debugging = 1;
188
189 /* Offset of a structure field relative to the start of the struct */
190 #define STRUCTOFFSET(type,field) ((int)&((type *)0)->field)
191
192 /* Offset of register relative to the start of the CONTEXT struct */
193 #define CONTEXTOFFSET(reg) STRUCTOFFSET(CONTEXT86,reg)
194
195 /* Offset of register relative to the start of the STACK16FRAME struct */
196 #define STACK16OFFSET(reg) STRUCTOFFSET(STACK16FRAME,reg)
197
198 /* Offset of register relative to the start of the STACK32FRAME struct */
199 #define STACK32OFFSET(reg) STRUCTOFFSET(STACK32FRAME,reg)
200
201 /* Offset of the stack pointer relative to %fs:(0) */
202 #define STACKOFFSET (STRUCTOFFSET(TEB,cur_stack))
203
204 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local );
205
206 static void *xmalloc (size_t size)
207 {
208 void *res;
209
210 res = malloc (size ? size : 1);
211 if (res == NULL)
212 {
213 fprintf (stderr, "Virtual memory exhausted.\n");
214 if (output_file_name) unlink( output_file_name );
215 exit (1);
216 }
217 return res;
218 }
219
220
221 static void *xrealloc (void *ptr, size_t size)
222 {
223 void *res = realloc (ptr, size);
224 if (res == NULL)
225 {
226 fprintf (stderr, "Virtual memory exhausted.\n");
227 if (output_file_name) unlink( output_file_name );
228 exit (1);
229 }
230 return res;
231 }
232
233 static char *xstrdup( const char *str )
234 {
235 char *res = strdup( str );
236 if (!res)
237 {
238 fprintf (stderr, "Virtual memory exhausted.\n");
239 if (output_file_name) unlink( output_file_name );
240 exit (1);
241 }
242 return res;
243 }
244
245 static void fatal_error( const char *msg, ... )
246 {
247 va_list valist;
248 va_start( valist, msg );
249 fprintf( stderr, "%s:%d: ", input_file_name, Line );
250 vfprintf( stderr, msg, valist );
251 va_end( valist );
252 if (output_file_name) unlink( output_file_name );
253 exit(1);
254 }
255
256 static int IsNumberString(char *s)
257 {
258 while (*s != '\0')
259 if (!isdigit(*s++))
260 return 0;
261
262 return 1;
263 }
264
265 static char *strupper(char *s)
266 {
267 char *p;
268
269 for(p = s; *p != '\0'; p++)
270 *p = toupper(*p);
271
272 return s;
273 }
274
275 static char * GetTokenInLine(void)
276 {
277 char *p;
278 char *token;
279
280 if (ParseNext != ParseBuffer)
281 {
282 if (ParseSaveChar == '\0')
283 return NULL;
284 *ParseNext = ParseSaveChar;
285 }
286
287 /*
288 * Remove initial white space.
289 */
290 for (p = ParseNext; isspace(*p); p++)
291 ;
292
293 if ((*p == '\0') || (*p == '#'))
294 return NULL;
295
296 /*
297 * Find end of token.
298 */
299 token = p++;
300 if (*token != '(' && *token != ')')
301 while (*p != '\0' && *p != '(' && *p != ')' && !isspace(*p))
302 p++;
303
304 ParseSaveChar = *p;
305 ParseNext = p;
306 *p = '\0';
307
308 return token;
309 }
310
311 static char * GetToken(void)
312 {
313 char *token;
314
315 if (ParseBuffer == NULL)
316 {
317 ParseBuffer = xmalloc(512);
318 ParseNext = ParseBuffer;
319 while (1)
320 {
321 Line++;
322 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
323 return NULL;
324 if (ParseBuffer[0] != '#')
325 break;
326 }
327 }
328
329 while ((token = GetTokenInLine()) == NULL)
330 {
331 ParseNext = ParseBuffer;
332 while (1)
333 {
334 Line++;
335 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
336 return NULL;
337 if (ParseBuffer[0] != '#')
338 break;
339 }
340 }
341
342 return token;
343 }
344
345
346 static int name_compare( const void *name1, const void *name2 )
347 {
348 ORDDEF *odp1 = *(ORDDEF **)name1;
349 ORDDEF *odp2 = *(ORDDEF **)name2;
350 return strcmp( odp1->name, odp2->name );
351 }
352
353 /*******************************************************************
354 * AssignOrdinals
355 *
356 * Assign ordinals to all entry points.
357 */
358 static void AssignOrdinals(void)
359 {
360 int i, ordinal;
361
362 if ( !nb_names ) return;
363
364 /* sort the list of names */
365 qsort( Names, nb_names, sizeof(Names[0]), name_compare );
366
367 /* check for duplicate names */
368 for (i = 0; i < nb_names - 1; i++)
369 {
370 if (!strcmp( Names[i]->name, Names[i+1]->name ))
371 {
372 Line = MAX( Names[i]->lineno, Names[i+1]->lineno );
373 fatal_error( "'%s' redefined (previous definition at line %d)\n",
374 Names[i]->name, MIN( Names[i]->lineno, Names[i+1]->lineno ) );
375 }
376 }
377
378 /* start assigning from Base, or from 1 if no ordinal defined yet */
379 if (Base == MAX_ORDINALS) Base = 1;
380 for (i = 0, ordinal = Base; i < nb_names; i++)
381 {
382 if (Names[i]->ordinal != -1) continue; /* already has an ordinal */
383 while (Ordinals[ordinal]) ordinal++;
384 if (ordinal >= MAX_ORDINALS)
385 {
386 Line = Names[i]->lineno;
387 fatal_error( "Too many functions defined (max %d)\n", MAX_ORDINALS );
388 }
389 Names[i]->ordinal = ordinal;
390 Ordinals[ordinal] = Names[i];
391 }
392 if (ordinal > Limit) Limit = ordinal;
393 }
394
395
396 /*******************************************************************
397 * ParseVariable
398 *
399 * Parse a variable definition.
400 */
401 static void ParseVariable( ORDDEF *odp )
402 {
403 char *endptr;
404 int *value_array;
405 int n_values;
406 int value_array_size;
407
408 char *token = GetToken();
409 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
410
411 n_values = 0;
412 value_array_size = 25;
413 value_array = xmalloc(sizeof(*value_array) * value_array_size);
414
415 while ((token = GetToken()) != NULL)
416 {
417 if (*token == ')')
418 break;
419
420 value_array[n_values++] = strtol(token, &endptr, 0);
421 if (n_values == value_array_size)
422 {
423 value_array_size += 25;
424 value_array = xrealloc(value_array,
425 sizeof(*value_array) * value_array_size);
426 }
427
428 if (endptr == NULL || *endptr != '\0')
429 fatal_error( "Expected number value, got '%s'\n", token );
430 }
431
432 if (token == NULL)
433 fatal_error( "End of file in variable declaration\n" );
434
435 odp->u.var.n_values = n_values;
436 odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values);
437 }
438
439
440 /*******************************************************************
441 * ParseExportFunction
442 *
443 * Parse a function definition.
444 */
445 static void ParseExportFunction( ORDDEF *odp )
446 {
447 char *token;
448 int i;
449
450 switch(SpecType)
451 {
452 case SPEC_WIN16:
453 if (odp->type == TYPE_STDCALL)
454 fatal_error( "'stdcall' not supported for Win16\n" );
455 if (odp->type == TYPE_VARARGS)
456 fatal_error( "'varargs' not supported for Win16\n" );
457 break;
458 case SPEC_WIN32:
459 if ((odp->type == TYPE_PASCAL) || (odp->type == TYPE_PASCAL_16))
460 fatal_error( "'pascal' not supported for Win32\n" );
461 break;
462 default:
463 break;
464 }
465
466 token = GetToken();
467 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
468
469 for (i = 0; i < sizeof(odp->u.func.arg_types)-1; i++)
470 {
471 token = GetToken();
472 if (*token == ')')
473 break;
474
475 if (!strcmp(token, "word"))
476 odp->u.func.arg_types[i] = 'w';
477 else if (!strcmp(token, "s_word"))
478 odp->u.func.arg_types[i] = 's';
479 else if (!strcmp(token, "long") || !strcmp(token, "segptr"))
480 odp->u.func.arg_types[i] = 'l';
481 else if (!strcmp(token, "ptr"))
482 odp->u.func.arg_types[i] = 'p';
483 else if (!strcmp(token, "str"))
484 odp->u.func.arg_types[i] = 't';
485 else if (!strcmp(token, "wstr"))
486 odp->u.func.arg_types[i] = 'W';
487 else if (!strcmp(token, "segstr"))
488 odp->u.func.arg_types[i] = 'T';
489 else if (!strcmp(token, "double"))
490 {
491 odp->u.func.arg_types[i++] = 'l';
492 odp->u.func.arg_types[i] = 'l';
493 }
494 else fatal_error( "Unknown variable type '%s'\n", token );
495
496 if (SpecType == SPEC_WIN32)
497 {
498 if (strcmp(token, "long") &&
499 strcmp(token, "ptr") &&
500 strcmp(token, "str") &&
501 strcmp(token, "wstr") &&
502 strcmp(token, "double"))
503 {
504 fatal_error( "Type '%s' not supported for Win32\n", token );
505 }
506 }
507 }
508 if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types)))
509 fatal_error( "Too many arguments\n" );
510
511 odp->u.func.arg_types[i] = '\0';
512 if ((odp->type == TYPE_STDCALL) && !i)
513 odp->type = TYPE_CDECL; /* stdcall is the same as cdecl for 0 args */
514 strcpy(odp->u.func.link_name, GetToken());
515 }
516
517
518 /*******************************************************************
519 * ParseEquate
520 *
521 * Parse an 'equate' definition.
522 */
523 static void ParseEquate( ORDDEF *odp )
524 {
525 char *endptr;
526
527 char *token = GetToken();
528 int value = strtol(token, &endptr, 0);
529 if (endptr == NULL || *endptr != '\0')
530 fatal_error( "Expected number value, got '%s'\n", token );
531 if (SpecType == SPEC_WIN32)
532 fatal_error( "'equate' not supported for Win32\n" );
533 odp->u.abs.value = value;
534 }
535
536
537 /*******************************************************************
538 * ParseStub
539 *
540 * Parse a 'stub' definition.
541 */
542 static void ParseStub( ORDDEF *odp )
543 {
544 odp->u.func.arg_types[0] = '\0';
545 strcpy( odp->u.func.link_name, STUB_CALLBACK );
546 }
547
548
549 /*******************************************************************
550 * ParseInterrupt
551 *
552 * Parse an 'interrupt' definition.
553 */
554 static void ParseInterrupt( ORDDEF *odp )
555 {
556 char *token;
557
558 if (SpecType == SPEC_WIN32)
559 fatal_error( "'interrupt' not supported for Win32\n" );
560
561 token = GetToken();
562 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
563
564 token = GetToken();
565 if (*token != ')') fatal_error( "Expected ')' got '%s'\n", token );
566
567 odp->u.func.arg_types[0] = '\0';
568 strcpy( odp->u.func.link_name, GetToken() );
569 }
570
571
572 /*******************************************************************
573 * ParseExtern
574 *
575 * Parse an 'extern' definition.
576 */
577 static void ParseExtern( ORDDEF *odp )
578 {
579 if (SpecType == SPEC_WIN16) fatal_error( "'extern' not supported for Win16\n" );
580 strcpy( odp->u.ext.link_name, GetToken() );
581 }
582
583
584 /*******************************************************************
585 * ParseForward
586 *
587 * Parse a 'forward' definition.
588 */
589 static void ParseForward( ORDDEF *odp )
590 {
591 if (SpecType == SPEC_WIN16) fatal_error( "'forward' not supported for Win16\n" );
592 strcpy( odp->u.fwd.link_name, GetToken() );
593 }
594
595
596 /*******************************************************************
597 * ParseOrdinal
598 *
599 * Parse an ordinal definition.
600 */
601 static void ParseOrdinal(int ordinal)
602 {
603 char *token;
604
605 ORDDEF *odp = &EntryPoints[nb_entry_points++];
606
607 if (!(token = GetToken())) fatal_error( "Expected type after ordinal\n" );
608
609 for (odp->type = 0; odp->type < TYPE_NBTYPES; odp->type++)
610 if (TypeNames[odp->type] && !strcmp( token, TypeNames[odp->type] ))
611 break;
612
613 if (odp->type >= TYPE_NBTYPES)
614 fatal_error( "Expected type after ordinal, found '%s' instead\n", token );
615
616 if (!(token = GetToken())) fatal_error( "Expected name after type\n" );
617
618 strcpy( odp->name, token );
619 odp->lineno = Line;
620 odp->ordinal = ordinal;
621
622 switch(odp->type)
623 {
624 case TYPE_BYTE:
625 case TYPE_WORD:
626 case TYPE_LONG:
627 ParseVariable( odp );
628 break;
629 case TYPE_REGISTER:
630 ParseExportFunction( odp );
631 #ifndef __i386__
632 /* ignore Win32 'register' routines on non-Intel archs */
633 if (SpecType == SPEC_WIN32)
634 {
635 nb_entry_points--;
636 return;
637 }
638 #endif
639 break;
640 case TYPE_PASCAL_16:
641 case TYPE_PASCAL:
642 case TYPE_STDCALL:
643 case TYPE_VARARGS:
644 case TYPE_CDECL:
645 ParseExportFunction( odp );
646 break;
647 case TYPE_INTERRUPT:
648 ParseInterrupt( odp );
649 break;
650 case TYPE_ABS:
651 ParseEquate( odp );
652 break;
653 case TYPE_STUB:
654 ParseStub( odp );
655 break;
656 case TYPE_EXTERN:
657 ParseExtern( odp );
658 break;
659 case TYPE_FORWARD:
660 ParseForward( odp );
661 break;
662 default:
663 assert( 0 );
664 }
665
666 if (ordinal != -1)
667 {
668 if (ordinal >= MAX_ORDINALS) fatal_error( "Ordinal number %d too large\n", ordinal );
669 if (ordinal > Limit) Limit = ordinal;
670 if (ordinal < Base) Base = ordinal;
671 odp->ordinal = ordinal;
672 Ordinals[ordinal] = odp;
673 }
674
675 if (!strcmp( odp->name, "@" ))
676 {
677 if (ordinal == -1)
678 fatal_error( "Nameless function needs an explicit ordinal number\n" );
679 if (SpecType != SPEC_WIN32)
680 fatal_error( "Nameless functions not supported for Win16\n" );
681 odp->name[0] = 0;
682 }
683 else Names[nb_names++] = odp;
684 }
685
686
687 /*******************************************************************
688 * ParseTopLevel
689 *
690 * Parse a spec file.
691 */
692 static void ParseTopLevel(void)
693 {
694 char *token;
695
696 while ((token = GetToken()) != NULL)
697 {
698 if (strcmp(token, "name") == 0)
699 {
700 strcpy(DLLName, GetToken());
701 strupper(DLLName);
702 }
703 else if (strcmp(token, "file") == 0)
704 {
705 strcpy(DLLFileName, GetToken());
706 strupper(DLLFileName);
707 }
708 else if (strcmp(token, "type") == 0)
709 {
710 token = GetToken();
711 if (!strcmp(token, "win16" )) SpecType = SPEC_WIN16;
712 else if (!strcmp(token, "win32" )) SpecType = SPEC_WIN32;
713 else fatal_error( "Type must be 'win16' or 'win32'\n" );
714 }
715 else if (strcmp(token, "mode") == 0)
716 {
717 token = GetToken();
718 if (!strcmp(token, "dll" )) SpecMode = SPEC_MODE_DLL;
719 else if (!strcmp(token, "guiexe" )) SpecMode = SPEC_MODE_GUIEXE;
720 else if (!strcmp(token, "cuiexe" )) SpecMode = SPEC_MODE_CUIEXE;
721 else fatal_error( "Mode must be 'dll', 'guiexe' or 'cuiexe'\n" );
722 }
723 else if (strcmp(token, "heap") == 0)
724 {
725 token = GetToken();
726 if (!IsNumberString(token)) fatal_error( "Expected number after heap\n" );
727 DLLHeapSize = atoi(token);
728 }
729 else if (strcmp(token, "init") == 0)
730 {
731 strcpy(DLLInitFunc, GetToken());
732 if (SpecType == SPEC_WIN16)
733 fatal_error( "init cannot be used for Win16 spec files\n" );
734 if (!DLLInitFunc[0])
735 fatal_error( "Expected function name after init\n" );
736 }
737 else if (strcmp(token, "import") == 0)
738 {
739 if (nb_imports >= MAX_IMPORTS)
740 fatal_error( "Too many imports (limit %d)\n", MAX_IMPORTS );
741 if (SpecType != SPEC_WIN32)
742 fatal_error( "Imports not supported for Win16\n" );
743 DLLImports[nb_imports++] = xstrdup(GetToken());
744 }
745 else if (strcmp(token, "rsrc") == 0)
746 {
747 strcpy( rsrc_name, GetToken() );
748 strcat( rsrc_name, "_ResourceDescriptor" );
749 }
750 else if (strcmp(token, "@") == 0)
751 {
752 if (SpecType != SPEC_WIN32)
753 fatal_error( "'@' ordinals not supported for Win16\n" );
754 ParseOrdinal( -1 );
755 }
756 else if (IsNumberString(token))
757 {
758 ParseOrdinal( atoi(token) );
759 }
760 else
761 fatal_error( "Expected name, id, length or ordinal\n" );
762 }
763
764 if (!DLLFileName[0])
765 {
766 if (SpecMode == SPEC_MODE_DLL)
767 sprintf( DLLFileName, "%s.DLL", DLLName );
768 else
769 sprintf( DLLFileName, "%s.EXE", DLLName );
770 }
771 }
772
773
774 /*******************************************************************
775 * StoreVariableCode
776 *
777 * Store a list of ints into a byte array.
778 */
779 static int StoreVariableCode( unsigned char *buffer, int size, ORDDEF *odp )
780 {
781 int i;
782
783 switch(size)
784 {
785 case 1:
786 for (i = 0; i < odp->u.var.n_values; i++)
787 buffer[i] = odp->u.var.values[i];
788 break;
789 case 2:
790 for (i = 0; i < odp->u.var.n_values; i++)
791 ((unsigned short *)buffer)[i] = odp->u.var.values[i];
792 break;
793 case 4:
794 for (i = 0; i < odp->u.var.n_values; i++)
795 ((unsigned int *)buffer)[i] = odp->u.var.values[i];
796 break;
797 }
798 return odp->u.var.n_values * size;
799 }
800
801
802 /*******************************************************************
803 * DumpBytes
804 *
805 * Dump a byte stream into the assembly code.
806 */
807 static void DumpBytes( FILE *outfile, const unsigned char *data, int len,
808 const char *label )
809 {
810 int i;
811
812 fprintf( outfile, "\nstatic BYTE %s[] = \n{", label );
813
814 for (i = 0; i < len; i++)
815 {
816 if (!(i & 0x0f)) fprintf( outfile, "\n " );
817 fprintf( outfile, "%d", *data++ );
818 if (i < len - 1) fprintf( outfile, ", " );
819 }
820 fprintf( outfile, "\n};\n" );
821 }
822
823
824 /*******************************************************************
825 * BuildModule16
826 *
827 * Build the in-memory representation of a 16-bit NE module, and dump it
828 * as a byte stream into the assembly code.
829 */
830 static int BuildModule16( FILE *outfile, int max_code_offset,
831 int max_data_offset )
832 {
833 int i;
834 char *buffer;
835 NE_MODULE *pModule;
836 SEGTABLEENTRY *pSegment;
837 OFSTRUCT *pFileInfo;
838 BYTE *pstr;
839 WORD *pword;
840 ET_BUNDLE *bundle = 0;
841 ET_ENTRY *entry = 0;
842
843 /* Module layout:
844 * NE_MODULE Module
845 * OFSTRUCT File information
846 * SEGTABLEENTRY Segment 1 (code)
847 * SEGTABLEENTRY Segment 2 (data)
848 * WORD[2] Resource table (empty)
849 * BYTE[2] Imported names (empty)
850 * BYTE[n] Resident names table
851 * BYTE[n] Entry table
852 */
853
854 buffer = xmalloc( 0x10000 );
855
856 pModule = (NE_MODULE *)buffer;
857 memset( pModule, 0, sizeof(*pModule) );
858 pModule->magic = IMAGE_OS2_SIGNATURE;
859 pModule->count = 1;
860 pModule->next = 0;
861 pModule->flags = NE_FFLAGS_SINGLEDATA | NE_FFLAGS_BUILTIN | NE_FFLAGS_LIBMODULE;
862 pModule->dgroup = 2;
863 pModule->heap_size = DLLHeapSize;
864 pModule->stack_size = 0;
865 pModule->ip = 0;
866 pModule->cs = 0;
867 pModule->sp = 0;
868 pModule->ss = 0;
869 pModule->seg_count = 2;
870 pModule->modref_count = 0;
871 pModule->nrname_size = 0;
872 pModule->modref_table = 0;
873 pModule->nrname_fpos = 0;
874 pModule->moveable_entries = 0;
875 pModule->alignment = 0;
876 pModule->truetype = 0;
877 pModule->os_flags = NE_OSFLAGS_WINDOWS;
878 pModule->misc_flags = 0;
879 pModule->dlls_to_init = 0;
880 pModule->nrname_handle = 0;
881 pModule->min_swap_area = 0;
882 pModule->expected_version = 0;
883 pModule->module32 = 0;
884 pModule->self = 0;
885 pModule->self_loading_sel = 0;
886
887 /* File information */
888
889 pFileInfo = (OFSTRUCT *)(pModule + 1);
890 pModule->fileinfo = (int)pFileInfo - (int)pModule;
891 memset( pFileInfo, 0, sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) );
892 pFileInfo->cBytes = sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName)
893 + strlen(DLLFileName);
894 strcpy( pFileInfo->szPathName, DLLFileName );
895 pstr = (char *)pFileInfo + pFileInfo->cBytes + 1;
896
897 #ifdef __i386__ /* FIXME: Alignment problems! */
898
899 /* Segment table */
900
901 pSegment = (SEGTABLEENTRY *)pstr;
902 pModule->seg_table = (int)pSegment - (int)pModule;
903 pSegment->filepos = 0;
904 pSegment->size = max_code_offset;
905 pSegment->flags = 0;
906 pSegment->minsize = max_code_offset;
907 pSegment->hSeg = 0;
908 pSegment++;
909
910 pModule->dgroup_entry = (int)pSegment - (int)pModule;
911 pSegment->filepos = 0;
912 pSegment->size = max_data_offset;
913 pSegment->flags = NE_SEGFLAGS_DATA;
914 pSegment->minsize = max_data_offset;
915 pSegment->hSeg = 0;
916 pSegment++;
917
918 /* Resource table */
919
920 pword = (WORD *)pSegment;
921 pModule->res_table = (int)pword - (int)pModule;
922 *pword++ = 0;
923 *pword++ = 0;
924
925 /* Imported names table */
926
927 pstr = (char *)pword;
928 pModule->import_table = (int)pstr - (int)pModule;
929 *pstr++ = 0;
930 *pstr++ = 0;
931
932 /* Resident names table */
933
934 pModule->name_table = (int)pstr - (int)pModule;
935 /* First entry is module name */
936 *pstr = strlen(DLLName );
937 strcpy( pstr + 1, DLLName );
938 pstr += *pstr + 1;
939 *(WORD *)pstr = 0;
940 pstr += sizeof(WORD);
941 /* Store all ordinals */
942 for (i = 1; i <= Limit; i++)
943 {
944 ORDDEF *odp = Ordinals[i];
945 if (!odp || !odp->name[0]) continue;
946 *pstr = strlen( odp->name );
947 strcpy( pstr + 1, odp->name );
948 strupper( pstr + 1 );
949 pstr += *pstr + 1;
950 *(WORD *)pstr = i;
951 pstr += sizeof(WORD);
952 }
953 *pstr++ = 0;
954
955 /* Entry table */
956
957 pModule->entry_table = (int)pstr - (int)pModule;
958 for (i = 1; i <= Limit; i++)
959 {
960 int selector = 0;
961 ORDDEF *odp = Ordinals[i];
962 if (!odp) continue;
963
964 switch (odp->type)
965 {
966 case TYPE_CDECL:
967 case TYPE_PASCAL:
968 case TYPE_PASCAL_16:
969 case TYPE_REGISTER:
970 case TYPE_INTERRUPT:
971 case TYPE_STUB:
972 selector = 1; /* Code selector */
973 break;
974
975 case TYPE_BYTE:
976 case TYPE_WORD:
977 case TYPE_LONG:
978 selector = 2; /* Data selector */
979 break;
980
981 case TYPE_ABS:
982 selector = 0xfe; /* Constant selector */
983 break;
984
985 default:
986 selector = 0; /* Invalid selector */
987 break;
988 }
989
990 if ( !selector )
991 continue;
992
993 if ( bundle && bundle->last+1 == i )
994 bundle->last++;
995 else
996 {
997 if ( bundle )
998 bundle->next = (char *)pstr - (char *)pModule;
999
1000 bundle = (ET_BUNDLE *)pstr;
1001 bundle->first = i-1;
1002 bundle->last = i;
1003 bundle->next = 0;
1004 pstr += sizeof(ET_BUNDLE);
1005 }
1006
1007 /* FIXME: is this really correct ?? */
1008 entry = (ET_ENTRY *)pstr;
1009 entry->type = 0xff; /* movable */
1010 entry->flags = 3; /* exported & public data */
1011 entry->segnum = selector;
1012 entry->offs = odp->offset;
1013 pstr += sizeof(ET_ENTRY);
1014 }
1015 *pstr++ = 0;
1016 #endif
1017
1018 /* Dump the module content */
1019
1020 DumpBytes( outfile, (char *)pModule, (int)pstr - (int)pModule,
1021 "Module" );
1022 return (int)pstr - (int)pModule;
1023 }
1024
1025
1026 /*******************************************************************
1027 * BuildSpec32File
1028 *
1029 * Build a Win32 C file from a spec file.
1030 */
1031 static int BuildSpec32File( FILE *outfile )
1032 {
1033 ORDDEF *odp;
1034 int i, fwd_size = 0, have_regs = FALSE;
1035 int nr_exports;
1036
1037 AssignOrdinals();
1038 nr_exports = Base <= Limit ? Limit - Base + 1 : 0;
1039
1040 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1041 input_file_name );
1042 fprintf( outfile, "#include \"builtin32.h\"\n\n" );
1043 fprintf( outfile, "extern const BUILTIN32_DESCRIPTOR %s_Descriptor;\n",
1044 DLLName );
1045
1046 /* Output the DLL functions prototypes */
1047
1048 for (i = 0, odp = EntryPoints; i < nb_entry_points; i++, odp++)
1049 {
1050 switch(odp->type)
1051 {
1052 case TYPE_EXTERN:
1053 fprintf( outfile, "extern void %s();\n", odp->u.ext.link_name );
1054 break;
1055 case TYPE_STDCALL:
1056 case TYPE_VARARGS:
1057 case TYPE_CDECL:
1058 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1059 break;
1060 case TYPE_FORWARD:
1061 fwd_size += strlen(odp->u.fwd.link_name) + 1;
1062 break;
1063 case TYPE_REGISTER:
1064 fprintf( outfile, "extern void __regs_%d();\n", odp->ordinal );
1065 have_regs = TRUE;
1066 break;
1067 case TYPE_STUB:
1068 fprintf( outfile, "static void __stub_%d() { BUILTIN32_Unimplemented(&%s_Descriptor,%d); }\n",
1069 odp->ordinal, DLLName, odp->ordinal );
1070 break;
1071 default:
1072 fprintf(stderr,"build: function type %d not available for Win32\n",
1073 odp->type);
1074 return -1;
1075 }
1076 }
1077
1078 /* Output LibMain function */
1079 if (DLLInitFunc[0]) fprintf( outfile, "extern void %s();\n", DLLInitFunc );
1080
1081
1082 /* Output code for all register functions */
1083
1084 if ( have_regs )
1085 {
1086 fprintf( outfile, "#ifndef __GNUC__\n" );
1087 fprintf( outfile, "static void __asm__dummy(void) {\n" );
1088 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1089 for (i = 0, odp = EntryPoints; i < nb_entry_points; i++, odp++)
1090 {
1091 if (odp->type != TYPE_REGISTER) continue;
1092 fprintf( outfile,
1093 "asm(\".align 4\\n\\t\"\n"
1094 " \".type " PREFIX "__regs_%d,@function\\n\\t\"\n"
1095 " \"" PREFIX "__regs_%d:\\n\\t\"\n"
1096 " \"call " PREFIX "CALL32_Regs\\n\\t\"\n"
1097 " \".long " PREFIX "%s\\n\\t\"\n"
1098 " \".byte %d,%d\");\n",
1099 odp->ordinal, odp->ordinal, odp->u.func.link_name,
1100 4 * strlen(odp->u.func.arg_types),
1101 4 * strlen(odp->u.func.arg_types) );
1102 }
1103 fprintf( outfile, "#ifndef __GNUC__\n" );
1104 fprintf( outfile, "}\n" );
1105 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1106 }
1107
1108 if (nb_names)
1109 {
1110 /* Output the DLL names table */
1111
1112 fprintf( outfile, "static const char * const FuncNames[%d] =\n{\n", nb_names );
1113 for (i = 0; i < nb_names; i++)
1114 {
1115 if (i) fprintf( outfile, ",\n" );
1116 fprintf( outfile, " \"%s\"", Names[i]->name );
1117 }
1118 fprintf( outfile, "\n};\n\n" );
1119
1120 /* Output the DLL ordinals table */
1121
1122 fprintf( outfile, "static const unsigned short FuncOrdinals[%d] =\n{\n", nb_names );
1123 for (i = 0; i < nb_names; i++)
1124 {
1125 if (i) fprintf( outfile, ",\n" );
1126 fprintf( outfile, " %d", Names[i]->ordinal - Base );
1127 }
1128 fprintf( outfile, "\n};\n\n" );
1129 }
1130
1131 if (nr_exports)
1132 {
1133 /* Output the DLL functions table */
1134
1135 fprintf( outfile, "\nstatic const ENTRYPOINT32 Functions[%d] =\n{\n",
1136 nr_exports );
1137 for (i = Base; i <= Limit; i++)
1138 {
1139 ORDDEF *odp = Ordinals[i];
1140 if (!odp) fprintf( outfile, " 0" );
1141 else switch(odp->type)
1142 {
1143 case TYPE_EXTERN:
1144 fprintf( outfile, " %s", odp->u.ext.link_name );
1145 break;
1146 case TYPE_STDCALL:
1147 case TYPE_VARARGS:
1148 case TYPE_CDECL:
1149 fprintf( outfile, " %s", odp->u.func.link_name);
1150 break;
1151 case TYPE_STUB:
1152 fprintf( outfile, " __stub_%d", i );
1153 break;
1154 case TYPE_REGISTER:
1155 fprintf( outfile, " __regs_%d", i );
1156 break;
1157 case TYPE_FORWARD:
1158 fprintf( outfile, " (ENTRYPOINT32)\"%s\"", odp->u.fwd.link_name );
1159 break;
1160 default:
1161 return -1;
1162 }
1163 if (i < Limit) fprintf( outfile, ",\n" );
1164 }
1165 fprintf( outfile, "\n};\n\n" );
1166
1167 /* Output the DLL argument types */
1168
1169 fprintf( outfile, "static const unsigned int ArgTypes[%d] =\n{\n",
1170 nr_exports );
1171 for (i = Base; i <= Limit; i++)
1172 {
1173 ORDDEF *odp = Ordinals[i];
1174 unsigned int j, mask = 0;
1175 if (odp &&
1176 ((odp->type == TYPE_STDCALL) || (odp->type == TYPE_CDECL) ||
1177 (odp->type == TYPE_REGISTER)))
1178 for (j = 0; odp->u.func.arg_types[j]; j++)
1179 {
1180 if (odp->u.func.arg_types[j] == 't') mask |= 1<< (j*2);
1181 if (odp->u.func.arg_types[j] == 'W') mask |= 2<< (j*2);
1182 }
1183 fprintf( outfile, " %d", mask );
1184 if (i < Limit) fprintf( outfile, ",\n" );
1185 }
1186 fprintf( outfile, "\n};\n\n" );
1187
1188 /* Output the DLL functions arguments */
1189
1190 fprintf( outfile, "static const unsigned char FuncArgs[%d] =\n{\n",
1191 nr_exports );
1192 for (i = Base; i <= Limit; i++)
1193 {
1194 unsigned char args = 0xff;
1195 ORDDEF *odp = Ordinals[i];
1196 if (odp) switch(odp->type)
1197 {
1198 case TYPE_STDCALL:
1199 args = (unsigned char)strlen(odp->u.func.arg_types);
1200 break;
1201 case TYPE_CDECL:
1202 args = 0x80 | (unsigned char)strlen(odp->u.func.arg_types);
1203 break;
1204 case TYPE_REGISTER:
1205 args = 0x40 | (unsigned char)strlen(odp->u.func.arg_types);
1206 break;
1207 case TYPE_FORWARD:
1208 args = 0xfd;
1209 break;
1210 default:
1211 args = 0xff;
1212 break;
1213 }
1214 fprintf( outfile, " 0x%02x", args );
1215 if (i < Limit) fprintf( outfile, ",\n" );
1216 }
1217 fprintf( outfile, "\n};\n\n" );
1218 }
1219
1220 /* Output the DLL imports */
1221
1222 if (nb_imports)
1223 {
1224 fprintf( outfile, "static const char * const Imports[%d] =\n{\n", nb_imports );
1225 for (i = 0; i < nb_imports; i++)
1226 {
1227 fprintf( outfile, " \"%s\"", DLLImports[i] );
1228 if (i < nb_imports-1) fprintf( outfile, ",\n" );
1229 }
1230 fprintf( outfile, "\n};\n\n" );
1231 }
1232
1233 /* Output the DLL descriptor */
1234
1235 if (rsrc_name[0]) fprintf( outfile, "extern const char %s[];\n\n", rsrc_name );
1236
1237 fprintf( outfile, "const BUILTIN32_DESCRIPTOR %s_Descriptor =\n{\n",
1238 DLLName );
1239 fprintf( outfile, " \"%s\",\n", DLLName );
1240 fprintf( outfile, " \"%s\",\n", DLLFileName );
1241 fprintf( outfile, " %d,\n", nr_exports? Base : 0 );
1242 fprintf( outfile, " %d,\n", nr_exports );
1243 fprintf( outfile, " %d,\n", nb_names );
1244 fprintf( outfile, " %d,\n", nb_imports );
1245 fprintf( outfile, " %d,\n", (fwd_size + 3) & ~3 );
1246 fprintf( outfile, " %s,\n", nr_exports ? "Functions" : "0" );
1247 fprintf( outfile, " %s,\n", nb_names ? "FuncNames" : "0" );
1248 fprintf( outfile, " %s,\n", nb_names ? "FuncOrdinals" : "0" );
1249 fprintf( outfile, " %s,\n", nr_exports ? "FuncArgs" : "0" );
1250 fprintf( outfile, " %s,\n", nr_exports ? "ArgTypes" : "0" );
1251 fprintf( outfile, " %s,\n", nb_imports ? "Imports" : "0" );
1252 fprintf( outfile, " %s,\n", DLLInitFunc[0] ? DLLInitFunc : "0" );
1253 fprintf( outfile, " %d,\n", SpecMode == SPEC_MODE_DLL ? IMAGE_FILE_DLL : 0 );
1254 fprintf( outfile, " %s\n", rsrc_name[0] ? rsrc_name : "0" );
1255 fprintf( outfile, "};\n" );
1256
1257 /* Output the DLL constructor */
1258
1259 fprintf( outfile, "#ifdef __GNUC__\n" );
1260 fprintf( outfile, "static void %s_init(void) __attribute__((constructor));\n", DLLName );
1261 fprintf( outfile, "#else /* defined(__GNUC__) */\n" );
1262 fprintf( outfile, "static void __asm__dummy_dll_init(void) {\n" );
1263 fprintf( outfile, "asm(\"\\t.section\t.init ,\\\"ax\\\"\\n\"\n" );
1264 fprintf( outfile, " \"\\tcall %s_init\\n\"\n", DLLName );
1265 fprintf( outfile, " \"\\t.previous\\n\");\n" );
1266 fprintf( outfile, "}\n" );
1267 fprintf( outfile, "#endif /* defined(__GNUC__) */\n" );
1268 fprintf( outfile, "static void %s_init(void) { BUILTIN32_RegisterDLL( &%s_Descriptor ); }\n",
1269 DLLName, DLLName );
1270
1271 return 0;
1272 }
1273
1274 /*******************************************************************
1275 * Spec16TypeCompare
1276 */
1277 static int Spec16TypeCompare( const void *e1, const void *e2 )
1278 {
1279 const ORDDEF *odp1 = *(const ORDDEF **)e1;
1280 const ORDDEF *odp2 = *(const ORDDEF **)e2;
1281
1282 int type1 = (odp1->type == TYPE_CDECL) ? 0
1283 : (odp1->type == TYPE_REGISTER) ? 3
1284 : (odp1->type == TYPE_INTERRUPT) ? 4
1285 : (odp1->type == TYPE_PASCAL_16) ? 1 : 2;
1286
1287 int type2 = (odp2->type == TYPE_CDECL) ? 0
1288 : (odp2->type == TYPE_REGISTER) ? 3
1289 : (odp2->type == TYPE_INTERRUPT) ? 4
1290 : (odp2->type == TYPE_PASCAL_16) ? 1 : 2;
1291
1292 int retval = type1 - type2;
1293 if ( !retval )
1294 retval = strcmp( odp1->u.func.arg_types, odp2->u.func.arg_types );
1295
1296 return retval;
1297 }
1298
1299 /*******************************************************************
1300 * BuildSpec16File
1301 *
1302 * Build a Win16 assembly file from a spec file.
1303 */
1304 static int BuildSpec16File( FILE *outfile )
1305 {
1306 ORDDEF **type, **typelist;
1307 int i, nFuncs, nTypes;
1308 int code_offset, data_offset, module_size;
1309 unsigned char *data;
1310
1311 /* File header */
1312
1313 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1314 input_file_name );
1315 fprintf( outfile, "#define __FLATCS__ 0x%04x\n", Code_Selector );
1316 fprintf( outfile, "#include \"builtin16.h\"\n\n" );
1317
1318 data = (unsigned char *)xmalloc( 0x10000 );
1319 memset( data, 0, 16 );
1320 data_offset = 16;
1321
1322
1323 /* Build sorted list of all argument types, without duplicates */
1324
1325 typelist = (ORDDEF **)calloc( Limit+1, sizeof(ORDDEF *) );
1326
1327 for (i = nFuncs = 0; i <= Limit; i++)
1328 {
1329 ORDDEF *odp = Ordinals[i];
1330 if (!odp) continue;
1331 switch (odp->type)
1332 {
1333 case TYPE_REGISTER:
1334 case TYPE_INTERRUPT:
1335 case TYPE_CDECL:
1336 case TYPE_PASCAL:
1337 case TYPE_PASCAL_16:
1338 case TYPE_STUB:
1339 typelist[nFuncs++] = odp;
1340
1341 default:
1342 break;
1343 }
1344 }
1345
1346 qsort( typelist, nFuncs, sizeof(ORDDEF *), Spec16TypeCompare );
1347
1348 i = nTypes = 0;
1349 while ( i < nFuncs )
1350 {
1351 typelist[nTypes++] = typelist[i++];
1352 while ( i < nFuncs && Spec16TypeCompare( typelist + i, typelist + nTypes-1 ) == 0 )
1353 i++;
1354 }
1355
1356 /* Output CallFrom16 routines needed by this .spec file */
1357
1358 for ( i = 0; i < nTypes; i++ )
1359 {
1360 char profile[101];
1361
1362 sprintf( profile, "%s_%s_%s",
1363 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1364 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1365 (typelist[i]->type == TYPE_INTERRUPT) ? "intr" :
1366 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1367 typelist[i]->u.func.arg_types );
1368
1369 BuildCallFrom16Func( outfile, profile, DLLName, TRUE );
1370 }
1371
1372 /* Output the DLL functions prototypes */
1373
1374 for (i = 0; i <= Limit; i++)
1375 {
1376 ORDDEF *odp = Ordinals[i];
1377 if (!odp) continue;
1378 switch(odp->type)
1379 {
1380 case TYPE_REGISTER:
1381 case TYPE_INTERRUPT:
1382 case TYPE_CDECL:
1383 case TYPE_PASCAL:
1384 case TYPE_PASCAL_16:
1385 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1386 break;
1387 default:
1388 break;
1389 }
1390 }
1391
1392 /* Output code segment */
1393
1394 fprintf( outfile, "\nstatic struct\n{\n CALLFROM16 call[%d];\n"
1395 " ENTRYPOINT16 entry[%d];\n} Code_Segment = \n{\n {\n",
1396 nTypes, nFuncs );
1397 code_offset = 0;
1398
1399 for ( i = 0; i < nTypes; i++ )
1400 {
1401 char profile[101], *arg;
1402 int argsize = 0;
1403
1404 sprintf( profile, "%s_%s_%s",
1405 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1406 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1407 (typelist[i]->type == TYPE_INTERRUPT) ? "intr" :
1408 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1409 typelist[i]->u.func.arg_types );
1410
1411 if ( typelist[i]->type != TYPE_CDECL )
1412 for ( arg = typelist[i]->u.func.arg_types; *arg; arg++ )
1413 switch ( *arg )
1414 {
1415 case 'w': /* word */
1416 case 's': /* s_word */
1417 argsize += 2;
1418 break;
1419
1420 case 'l': /* long or segmented pointer */
1421 case 'T': /* segmented pointer to null-terminated string */
1422 case 'p': /* linear pointer */
1423 case 't': /* linear pointer to null-terminated string */
1424 argsize += 4;
1425 break;
1426 }
1427
1428 if ( typelist[i]->type == TYPE_INTERRUPT )
1429 argsize += 2;
1430
1431 fprintf( outfile, " CF16_%s( %s_CallFrom16_%s, %d, \"%s\" ),\n",
1432 ( typelist[i]->type == TYPE_REGISTER
1433 || typelist[i]->type == TYPE_INTERRUPT)? "REGS":
1434 typelist[i]->type == TYPE_PASCAL_16? "WORD" : "LONG",
1435 DLLName, profile, argsize, profile );
1436
1437 code_offset += sizeof(CALLFROM16);
1438 }
1439 fprintf( outfile, " },\n {\n" );
1440
1441 for (i = 0; i <= Limit; i++)
1442 {
1443 ORDDEF *odp = Ordinals[i];
1444 if (!odp) continue;
1445 switch (odp->type)
1446 {
1447 case TYPE_ABS:
1448 odp->offset = LOWORD(odp->u.abs.value);
1449 break;
1450
1451 case TYPE_BYTE:
1452 odp->offset = data_offset;
1453 data_offset += StoreVariableCode( data + data_offset, 1, odp);
1454 break;
1455
1456 case TYPE_WORD:
1457 odp->offset = data_offset;
1458 data_offset += StoreVariableCode( data + data_offset, 2, odp);
1459 break;
1460
1461 case TYPE_LONG:
1462 odp->offset = data_offset;
1463 data_offset += StoreVariableCode( data + data_offset, 4, odp);
1464 break;
1465
1466 case TYPE_REGISTER:
1467 case TYPE_INTERRUPT:
1468 case TYPE_CDECL:
1469 case TYPE_PASCAL:
1470 case TYPE_PASCAL_16:
1471 case TYPE_STUB:
1472 type = bsearch( &odp, typelist, nTypes, sizeof(ORDDEF *), Spec16TypeCompare );
1473 assert( type );
1474
1475 fprintf( outfile, " /* %s.%d */ ", DLLName, i );
1476 fprintf( outfile, "EP( %s, %d /* %s_%s_%s */ ),\n",
1477 odp->u.func.link_name,
1478 (type-typelist)*sizeof(CALLFROM16) -
1479 (code_offset + sizeof(ENTRYPOINT16)),
1480 (odp->type == TYPE_CDECL) ? "c" : "p",
1481 (odp->type == TYPE_REGISTER) ? "regs" :
1482 (odp->type == TYPE_INTERRUPT) ? "intr" :
1483 (odp->type == TYPE_PASCAL_16) ? "word" : "long",
1484 odp->u.func.arg_types );
1485
1486 odp->offset = code_offset;
1487 code_offset += sizeof(ENTRYPOINT16);
1488 break;
1489
1490 default:
1491 fprintf(stderr,"build: function type %d not available for Win16\n",
1492 odp->type);
1493 return -1;
1494 }
1495 }
1496
1497 fprintf( outfile, " }\n};\n" );
1498
1499 /* Output data segment */
1500
1501 DumpBytes( outfile, data, data_offset, "Data_Segment" );
1502
1503 /* Build the module */
1504
1505 module_size = BuildModule16( outfile, code_offset, data_offset );
1506
1507 /* Output the DLL descriptor */
1508
1509 if (rsrc_name[0]) fprintf( outfile, "extern const char %s[];\n\n", rsrc_name );
1510
1511 fprintf( outfile, "\nconst BUILTIN16_DESCRIPTOR %s_Descriptor = \n{\n", DLLName );
1512 fprintf( outfile, " \"%s\",\n", DLLName );
1513 fprintf( outfile, " Module,\n" );
1514 fprintf( outfile, " sizeof(Module),\n" );
1515 fprintf( outfile, " (BYTE *)&Code_Segment,\n" );
1516 fprintf( outfile, " (BYTE *)Data_Segment,\n" );
1517 fprintf( outfile, " %s\n", rsrc_name[0] ? rsrc_name : "0" );
1518 fprintf( outfile, "};\n" );
1519
1520 /* Output the DLL constructor */
1521
1522 fprintf( outfile, "#ifdef __GNUC__\n" );
1523 fprintf( outfile, "static void %s_init(void) __attribute__((constructor));\n", DLLName );
1524 fprintf( outfile, "#else /* defined(__GNUC__) */\n" );
1525 fprintf( outfile, "static void __asm__dummy_dll_init(void) {\n" );
1526 fprintf( outfile, "asm(\"\\t.section\t.init ,\\\"ax\\\"\\n\"\n" );
1527 fprintf( outfile, " \"\\tcall %s_init\\n\"\n", DLLName );
1528 fprintf( outfile, " \"\\t.previous\\n\");\n" );
1529 fprintf( outfile, "}\n" );
1530 fprintf( outfile, "#endif /* defined(__GNUC__) */\n" );
1531 fprintf( outfile, "static void %s_init(void) { BUILTIN_RegisterDLL( &%s_Descriptor ); }\n",
1532 DLLName, DLLName );
1533
1534 return 0;
1535 }
1536
1537
1538 /*******************************************************************
1539 * BuildSpecFile
1540 *
1541 * Build an assembly file from a spec file.
1542 */
1543 static void BuildSpecFile( FILE *outfile, FILE *infile )
1544 {
1545 SpecFp = infile;
1546 ParseTopLevel();
1547
1548 switch(SpecType)
1549 {
1550 case SPEC_WIN16:
1551 BuildSpec16File( outfile );
1552 break;
1553 case SPEC_WIN32:
1554 BuildSpec32File( outfile );
1555 break;
1556 default:
1557 fatal_error( "Missing 'type' declaration\n" );
1558 }
1559 }
1560
1561
1562 /*******************************************************************
1563 * BuildCallFrom16Func
1564 *
1565 * Build a 16-bit-to-Wine callback glue function.
1566 *
1567 * The generated routines are intended to be used as argument conversion
1568 * routines to be called by the CallFrom16... core. Thus, the prototypes of
1569 * the generated routines are (see also CallFrom16):
1570 *
1571 * extern WORD WINAPI PREFIX_CallFrom16_C_word_xxx( FARPROC func, LPBYTE args );
1572 * extern LONG WINAPI PREFIX_CallFrom16_C_long_xxx( FARPROC func, LPBYTE args );
1573 * extern void WINAPI PREFIX_CallFrom16_C_regs_xxx( FARPROC func, LPBYTE args,
1574 * CONTEXT86 *context );
1575 * extern void WINAPI PREFIX_CallFrom16_C_intr_xxx( FARPROC func, LPBYTE args,
1576 * CONTEXT86 *context );
1577 *
1578 * where 'C' is the calling convention ('p' for pascal or 'c' for cdecl),
1579 * and each 'x' is an argument ('w'=word, 's'=signed word, 'l'=long,
1580 * 'p'=linear pointer, 't'=linear pointer to null-terminated string,
1581 * 'T'=segmented pointer to null-terminated string).
1582 *
1583 * The generated routines fetch the arguments from the 16-bit stack (pointed
1584 * to by 'args'); the offsets of the single argument values are computed
1585 * according to the calling convention and the argument types. Then, the
1586 * 32-bit entry point is called with these arguments.
1587 *
1588 * For register functions, the arguments (if present) are converted just
1589 * the same as for normal functions, but in addition the CONTEXT86 pointer
1590 * filled with the current register values is passed to the 32-bit routine.
1591 * (An 'intr' interrupt handler routine is treated exactly like a register
1592 * routine, except that upon return, the flags word pushed onto the stack
1593 * by the interrupt is removed by the 16-bit call stub.)
1594 *
1595 */
1596 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local )
1597 {
1598 int i, pos, argsize = 0;
1599 int short_ret = 0;
1600 int reg_func = 0;
1601 int usecdecl = 0;
1602 char *args = profile + 7;
1603 char *ret_type;
1604
1605 /* Parse function type */
1606
1607 if (!strncmp( "c_", profile, 2 )) usecdecl = 1;
1608 else if (strncmp( "p_", profile, 2 ))
1609 {
1610 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1611 return;
1612 }
1613
1614 if (!strncmp( "word_", profile + 2, 5 )) short_ret = 1;
1615 else if (!strncmp( "regs_", profile + 2, 5 )) reg_func = 1;
1616 else if (!strncmp( "intr_", profile + 2, 5 )) reg_func = 2;
1617 else if (strncmp( "long_", profile + 2, 5 ))
1618 {
1619 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1620 return;
1621 }
1622
1623 for ( i = 0; args[i]; i++ )
1624 switch ( args[i] )
1625 {
1626 case 'w': /* word */
1627 case 's': /* s_word */
1628 argsize += 2;
1629 break;
1630
1631 case 'l': /* long or segmented pointer */
1632 case 'T': /* segmented pointer to null-terminated string */
1633 case 'p': /* linear pointer */
1634 case 't': /* linear pointer to null-terminated string */
1635 argsize += 4;
1636 break;
1637 }
1638
1639 ret_type = reg_func? "void" : short_ret? "WORD" : "LONG";
1640
1641 fprintf( outfile, "typedef %s WINAPI (*proc_%s_t)( ",
1642 ret_type, profile );
1643 args = profile + 7;
1644 for ( i = 0; args[i]; i++ )
1645 {
1646 if ( i ) fprintf( outfile, ", " );
1647 switch (args[i])
1648 {
1649 case 'w': fprintf( outfile, "WORD" ); break;
1650 case 's': fprintf( outfile, "INT16" ); break;
1651 case 'l': case 'T': fprintf( outfile, "LONG" ); break;
1652 case 'p': case 't': fprintf( outfile, "LPVOID" ); break;
1653 }
1654 }
1655 if ( reg_func )
1656 fprintf( outfile, "%sstruct _CONTEXT86 *", i? ", " : "" );
1657 else if ( !i )
1658 fprintf( outfile, "void" );
1659 fprintf( outfile, " );\n" );
1660
1661 fprintf( outfile, "%s%s WINAPI %s_CallFrom16_%s( FARPROC proc, LPBYTE args%s )\n{\n",
1662 local? "static " : "", ret_type, prefix, profile,
1663 reg_func? ", struct _CONTEXT86 *context" : "" );
1664
1665 fprintf( outfile, " %s((proc_%s_t) proc) (\n",
1666 reg_func? "" : "return ", profile );
1667 args = profile + 7;
1668 pos = !usecdecl? argsize : 0;
1669 for ( i = 0; args[i]; i++ )
1670 {
1671 if ( i ) fprintf( outfile, ",\n" );
1672 fprintf( outfile, " " );
1673 switch (args[i])
1674 {
1675 case 'w': /* word */
1676 if ( !usecdecl ) pos -= 2;
1677 fprintf( outfile, "*(WORD *)(args+%d)", pos );
1678 if ( usecdecl ) pos += 2;
1679 break;
1680
1681 case 's': /* s_word */
1682 if ( !usecdecl ) pos -= 2;
1683 fprintf( outfile, "*(INT16 *)(args+%d)", pos );
1684 if ( usecdecl ) pos += 2;
1685 break;
1686
1687 case 'l': /* long or segmented pointer */
1688 case 'T': /* segmented pointer to null-terminated string */
1689 if ( !usecdecl ) pos -= 4;
1690 fprintf( outfile, "*(LONG *)(args+%d)", pos );
1691 if ( usecdecl ) pos += 4;
1692 break;
1693
1694 case 'p': /* linear pointer */
1695 case 't': /* linear pointer to null-terminated string */
1696 if ( !usecdecl ) pos -= 4;
1697 fprintf( outfile, "PTR_SEG_TO_LIN( *(SEGPTR *)(args+%d) )", pos );
1698 if ( usecdecl ) pos += 4;
1699 break;
1700
1701 default:
1702 fprintf( stderr, "Unknown arg type '%c'\n", args[i] );
1703 }
1704 }
1705 if ( reg_func )
1706 fprintf( outfile, "%s context", i? ",\n" : "" );
1707 fprintf( outfile, " );\n}\n\n" );
1708 }
1709
1710 /*******************************************************************
1711 * BuildCallTo16Func
1712 *
1713 * Build a Wine-to-16-bit callback glue function.
1714 *
1715 * Prototypes for the CallTo16 functions:
1716 * extern WORD CALLBACK PREFIX_CallTo16_word_xxx( FARPROC16 func, args... );
1717 * extern LONG CALLBACK PREFIX_CallTo16_long_xxx( FARPROC16 func, args... );
1718 *
1719 * These routines are provided solely for convenience; they simply
1720 * write the arguments onto the 16-bit stack, and call the appropriate
1721 * CallTo16... core routine.
1722 *
1723 * If you have more sophisticated argument conversion requirements than
1724 * are provided by these routines, you might as well call the core
1725 * routines by yourself.
1726 *
1727 */
1728 static void BuildCallTo16Func( FILE *outfile, char *profile, char *prefix )
1729 {
1730 char *args = profile + 5;
1731 int i, argsize = 0, short_ret = 0;
1732
1733 if (!strncmp( "word_", profile, 5 )) short_ret = 1;
1734 else if (strncmp( "long_", profile, 5 ))
1735 {
1736 fprintf( stderr, "Invalid function name '%s'.\n", profile );
1737 exit(1);
1738 }
1739
1740 fprintf( outfile, "%s %s_CallTo16_%s( FARPROC16 proc",
1741 short_ret? "WORD" : "LONG", prefix, profile );
1742 args = profile + 5;
1743 for ( i = 0; args[i]; i++ )
1744 {
1745 fprintf( outfile, ", " );
1746 switch (args[i])
1747 {
1748 case 'w': fprintf( outfile, "WORD" ); argsize += 2; break;
1749 case 'l': fprintf( outfile, "LONG" ); argsize += 4; break;
1750 }
1751 fprintf( outfile, " arg%d", i+1 );
1752 }
1753 fprintf( outfile, " )\n{\n" );
1754
1755 if ( argsize > 0 )
1756 fprintf( outfile, " LPBYTE args = (LPBYTE)CURRENT_STACK16;\n" );
1757
1758 args = profile + 5;
1759 for ( i = 0; args[i]; i++ )
1760 {
1761 switch (args[i])
1762 {
1763 case 'w': fprintf( outfile, " args -= sizeof(WORD); *(WORD" ); break;
1764 case 'l': fprintf( outfile, " args -= sizeof(LONG); *(LONG" ); break;
1765 default: fprintf( stderr, "Unexpected case '%c' in BuildCallTo16Func\n",
1766 args[i] );
1767 }
1768 fprintf( outfile, " *)args = arg%d;\n", i+1 );
1769 }
1770
1771 fprintf( outfile, " return CallTo16%s( proc, %d );\n}\n\n",
1772 short_ret? "Word" : "Long", argsize );
1773 }
1774
1775
1776
1777 /*******************************************************************
1778 * BuildCallFrom16Core
1779 *
1780 * This routine builds the core routines used in 16->32 thunks:
1781 * CallFrom16Word, CallFrom16Long, CallFrom16Register, and CallFrom16Thunk.
1782 *
1783 * These routines are intended to be called via a far call (with 32-bit
1784 * operand size) from 16-bit code. The 16-bit code stub must push %bp,
1785 * the 32-bit entry point to be called, and the argument conversion
1786 * routine to be used (see stack layout below).
1787 *
1788 * The core routine completes the STACK16FRAME on the 16-bit stack and
1789 * switches to the 32-bit stack. Then, the argument conversion routine
1790 * is called; it gets passed the 32-bit entry point and a pointer to the
1791 * 16-bit arguments (on the 16-bit stack) as parameters. (You can either
1792 * use conversion routines automatically generated by BuildCallFrom16,
1793 * or write your own for special purposes.)
1794 *
1795 * The conversion routine must call the 32-bit entry point, passing it
1796 * the converted arguments, and return its return value to the core.
1797 * After the conversion routine has returned, the core switches back
1798 * to the 16-bit stack, converts the return value to the DX:AX format
1799 * (CallFrom16Long), and returns to the 16-bit call stub. All parameters,
1800 * including %bp, are popped off the stack.
1801 *
1802 * The 16-bit call stub now returns to the caller, popping the 16-bit
1803 * arguments if necessary (pascal calling convention).
1804 *
1805 * In the case of a 'register' function, CallFrom16Register fills a
1806 * CONTEXT86 structure with the values all registers had at the point
1807 * the first instruction of the 16-bit call stub was about to be
1808 * executed. A pointer to this CONTEXT86 is passed as third parameter
1809 * to the argument conversion routine, which typically passes it on
1810 * to the called 32-bit entry point.
1811 *
1812 * CallFrom16Thunk is a special variant used by the implementation of
1813 * the Win95 16->32 thunk functions C16ThkSL and C16ThkSL01 and is
1814 * implemented as follows:
1815 * On entry, the EBX register is set up to contain a flat pointer to the
1816 * 16-bit stack such that EBX+22 points to the first argument.
1817 * Then, the entry point is called, while EBP is set up to point
1818 * to the return address (on the 32-bit stack).
1819 * The called function returns with CX set to the number of bytes
1820 * to be popped of the caller's stack.
1821 *
1822 * Stack layout upon entry to the core routine (STACK16FRAME):
1823 * ... ...
1824 * (sp+24) word first 16-bit arg
1825 * (sp+22) word cs
1826 * (sp+20) word ip
1827 * (sp+18) word bp
1828 * (sp+14) long 32-bit entry point (reused for Win16 mutex recursion count)
1829 * (sp+12) word ip of actual entry point (necessary for relay debugging)
1830 * (sp+8) long relay (argument conversion) function entry point
1831 * (sp+4) long cs of 16-bit entry point
1832 * (sp) long ip of 16-bit entry point
1833 *
1834 * Added on the stack:
1835 * (sp-2) word saved gs
1836 * (sp-4) word saved fs
1837 * (sp-6) word saved es
1838 * (sp-8) word saved ds
1839 * (sp-12) long saved ebp
1840 * (sp-16) long saved ecx
1841 * (sp-20) long saved edx
1842 * (sp-24) long saved previous stack
1843 */
1844 static void BuildCallFrom16Core( FILE *outfile, int reg_func, int thunk, int short_ret )
1845 {
1846 char *name = thunk? "Thunk" : reg_func? "Register" : short_ret? "Word" : "Long";
1847
1848 /* Function header */
1849 fprintf( outfile, "\n\t.align 4\n" );
1850 #ifdef USE_STABS
1851 fprintf( outfile, ".stabs \"CallFrom16%s:F1\",36,0,0," PREFIX "CallFrom16%s\n",
1852 name, name);
1853 #endif
1854 fprintf( outfile, "\t.type " PREFIX "CallFrom16%s,@function\n", name );
1855 fprintf( outfile, "\t.globl " PREFIX "CallFrom16%s\n", name );
1856 fprintf( outfile, PREFIX "CallFrom16%s:\n", name );
1857
1858 /* Create STACK16FRAME (except STACK32FRAME link) */
1859 fprintf( outfile, "\tpushw %%gs\n" );
1860 fprintf( outfile, "\tpushw %%fs\n" );
1861 fprintf( outfile, "\tpushw %%es\n" );
1862 fprintf( outfile, "\tpushw %%ds\n" );
1863 fprintf( outfile, "\tpushl %%ebp\n" );
1864 fprintf( outfile, "\tpushl %%ecx\n" );
1865 fprintf( outfile, "\tpushl %%edx\n" );
1866
1867 /* Save original EFlags register */
1868 fprintf( outfile, "\tpushfl\n" );
1869
1870 if ( UsePIC )
1871 {
1872 /* Get Global Offset Table into %ecx */
1873 fprintf( outfile, "\tcall .LCallFrom16%s.getgot1\n", name );
1874 fprintf( outfile, ".LCallFrom16%s.getgot1:\n", name );
1875 fprintf( outfile, "\tpopl %%ecx\n" );
1876 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot1], %%ecx\n", name );
1877 }
1878
1879 /* Load 32-bit segment registers */
1880 fprintf( outfile, "\tmovw $0x%04x, %%dx\n", Data_Selector );
1881 #ifdef __svr4__
1882 fprintf( outfile, "\tdata16\n");
1883 #endif
1884 fprintf( outfile, "\tmovw %%dx, %%ds\n" );
1885 #ifdef __svr4__
1886 fprintf( outfile, "\tdata16\n");
1887 #endif
1888 fprintf( outfile, "\tmovw %%dx, %%es\n" );
1889
1890 if ( UsePIC )
1891 {
1892 fprintf( outfile, "\tmovl " PREFIX "SYSLEVEL_Win16CurrentTeb@GOT(%%ecx), %%edx\n" );
1893 fprintf( outfile, "\tmovw (%%edx), %%fs\n" );
1894 }
1895 else
1896 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb, %%fs\n" );
1897
1898 /* Get address of ldt_copy array into %ecx */
1899 if ( UsePIC )
1900 fprintf( outfile, "\tmovl " PREFIX "ldt_copy@GOT(%%ecx), %%ecx\n" );
1901 else
1902 fprintf( outfile, "\tmovl $" PREFIX "ldt_copy, %%ecx\n" );
1903
1904 /* Translate STACK16FRAME base to flat offset in %edx */
1905 fprintf( outfile, "\tmovw %%ss, %%dx\n" );
1906 fprintf( outfile, "\tandl $0xfff8, %%edx\n" );
1907 fprintf( outfile, "\tmovl (%%ecx,%%edx), %%edx\n" );
1908 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
1909 fprintf( outfile, "\tleal (%%ebp,%%edx), %%edx\n" );
1910
1911 /* Get saved flags into %ecx */
1912 fprintf( outfile, "\tpopl %%ecx\n" );
1913
1914 /* Get the 32-bit stack pointer from the TEB and complete STACK16FRAME */
1915 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d), %%ebp\n", STACKOFFSET );
1916 fprintf( outfile, "\tpushl %%ebp\n" );
1917
1918 /* Switch stacks */
1919 #ifdef __svr4__
1920 fprintf( outfile,"\tdata16\n");
1921 #endif
1922 fprintf( outfile, "\t.byte 0x64\n\tmovw %%ss, (%d)\n", STACKOFFSET + 2 );
1923 fprintf( outfile, "\t.byte 0x64\n\tmovw %%sp, (%d)\n", STACKOFFSET );
1924 fprintf( outfile, "\tpushl %%ds\n" );
1925 fprintf( outfile, "\tpopl %%ss\n" );
1926 fprintf( outfile, "\tmovl %%ebp, %%esp\n" );
1927 fprintf( outfile, "\taddl $%d, %%ebp\n", STRUCTOFFSET(STACK32FRAME, ebp) );
1928
1929
1930 /* At this point:
1931 STACK16FRAME is completely set up
1932 DS, ES, SS: flat data segment
1933 FS: current TEB
1934 ESP: points to last STACK32FRAME
1935 EBP: points to ebp member of last STACK32FRAME
1936 EDX: points to current STACK16FRAME
1937 ECX: contains saved flags
1938 all other registers: unchanged */
1939
1940 /* Special case: C16ThkSL stub */
1941 if ( thunk )
1942 {
1943 /* Set up registers as expected and call thunk */
1944 fprintf( outfile, "\tleal %d(%%edx), %%ebx\n", sizeof(STACK16FRAME)-22 );
1945 fprintf( outfile, "\tleal -4(%%esp), %%ebp\n" );
1946
1947 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(entry_point) );
1948
1949 /* Switch stack back */
1950 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
1951 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
1952 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
1953
1954 /* Restore registers and return directly to caller */
1955 fprintf( outfile, "\taddl $8, %%esp\n" );
1956 fprintf( outfile, "\tpopl %%ebp\n" );
1957 fprintf( outfile, "\tpopw %%ds\n" );
1958 fprintf( outfile, "\tpopw %%es\n" );
1959 fprintf( outfile, "\tpopw %%fs\n" );
1960 fprintf( outfile, "\tpopw %%gs\n" );
1961 fprintf( outfile, "\taddl $20, %%esp\n" );
1962
1963 fprintf( outfile, "\txorb %%ch, %%ch\n" );
1964 fprintf( outfile, "\tpopl %%ebx\n" );
1965 fprintf( outfile, "\taddw %%cx, %%sp\n" );
1966 fprintf( outfile, "\tpush %%ebx\n" );
1967
1968 fprintf( outfile, "\t.byte 0x66\n" );
1969 fprintf( outfile, "\tlret\n" );
1970
1971 return;
1972 }
1973
1974
1975 /* Build register CONTEXT */
1976 if ( reg_func )
1977 {
1978 fprintf( outfile, "\tsubl $%d, %%esp\n", sizeof(CONTEXT86) );
1979
1980 fprintf( outfile, "\tmovl %%ecx, %d(%%esp)\n", CONTEXTOFFSET(EFlags) );
1981
1982 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eax) );
1983 fprintf( outfile, "\tmovl %%ebx, %d(%%esp)\n", CONTEXTOFFSET(Ebx) );
1984 fprintf( outfile, "\tmovl %%esi, %d(%%esp)\n", CONTEXTOFFSET(Esi) );
1985 fprintf( outfile, "\tmovl %%edi, %d(%%esp)\n", CONTEXTOFFSET(Edi) );
1986
1987 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ebp) );
1988 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ebp) );
1989 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ecx) );
1990 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ecx) );
1991 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(edx) );
1992 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Edx) );
1993
1994 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ds) );
1995 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegDs) );
1996 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(es) );
1997 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegEs) );
1998 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(fs) );
1999 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegFs) );
2000 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(gs) );
2001 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegGs) );
2002
2003 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(cs) );
2004 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegCs) );
2005 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ip) );
2006 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eip) );
2007
2008 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET+2 );
2009 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegSs) );
2010 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET );
2011 fprintf( outfile, "\taddl $%d, %%eax\n", STACK16OFFSET(ip) );
2012 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Esp) );
2013 #if 0
2014 fprintf( outfile, "\tfsave %d(%%esp)\n", CONTEXTOFFSET(FloatSave) );
2015 #endif
2016
2017 /* Push address of CONTEXT86 structure -- popped by the relay routine */
2018 fprintf( outfile, "\tpushl %%esp\n" );
2019 }
2020
2021
2022 /* Print debug info before call */
2023 if ( debugging )
2024 {
2025 if ( UsePIC )
2026 {
2027 fprintf( outfile, "\tpushl %%ebx\n" );
2028
2029 /* Get Global Offset Table into %ebx (for PLT call) */
2030 fprintf( outfile, "\tcall .LCallFrom16%s.getgot2\n", name );
2031 fprintf( outfile, ".LCallFrom16%s.getgot2:\n", name );
2032 fprintf( outfile, "\tpopl %%ebx\n" );
2033 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot2], %%ebx\n", name );
2034 }
2035
2036 fprintf( outfile, "\tpushl %%edx\n" );
2037 if ( reg_func )
2038 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
2039 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
2040 else
2041 fprintf( outfile, "\tpushl $0\n" );
2042
2043 if ( UsePIC )
2044 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16@PLT\n ");
2045 else
2046 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16\n ");
2047
2048 fprintf( outfile, "\tpopl %%edx\n" );
2049 fprintf( outfile, "\tpopl %%edx\n" );
2050
2051 if ( UsePIC )
2052 fprintf( outfile, "\tpopl %%ebx\n" );
2053 }
2054
2055 /* Call relay routine (which will call the API entry point) */
2056 fprintf( outfile, "\tleal %d(%%edx), %%eax\n", sizeof(STACK16FRAME) );
2057 fprintf( outfile, "\tpushl %%eax\n" );
2058 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK16OFFSET(entry_point) );
2059 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(relay) );
2060
2061 /* Print debug info after call */
2062 if ( debugging )
2063 {
2064 if ( UsePIC )
2065 {
2066 fprintf( outfile, "\tpushl %%ebx\n" );
2067
2068 /* Get Global Offset Table into %ebx (for PLT call) */
2069 fprintf( outfile, "\tcall .LCallFrom16%s.getgot3\n", name );
2070 fprintf( outfile, ".LCallFrom16%s.getgot3:\n", name );
2071 fprintf( outfile, "\tpopl %%ebx\n" );
2072 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot3], %%ebx\n", name );
2073 }
2074
2075 fprintf( outfile, "\tpushl %%eax\n" );
2076 if ( reg_func )
2077 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
2078 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
2079 else
2080 fprintf( outfile, "\tpushl $0\n" );
2081
2082 if ( UsePIC )
2083 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret@PLT\n ");
2084 else
2085 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret\n ");
2086
2087 fprintf( outfile, "\tpopl %%eax\n" );
2088 fprintf( outfile, "\tpopl %%eax\n" );
2089
2090 if ( UsePIC )
2091 fprintf( outfile, "\tpopl %%ebx\n" );
2092 }
2093
2094
2095 if ( reg_func )
2096 {
2097 fprintf( outfile, "\tmovl %%esp, %%ebx\n" );
2098
2099 /* Switch stack back */
2100 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2101 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2102 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2103
2104 /* Get return address to CallFrom16 stub */
2105 fprintf( outfile, "\taddw $%d, %%sp\n", STACK16OFFSET(callfrom_ip)-4 );
2106 fprintf( outfile, "\tpopl %%eax\n" );
2107 fprintf( outfile, "\tpopl %%edx\n" );
2108
2109 /* Restore all registers from CONTEXT */
2110 fprintf( outfile, "\tmovw %d(%%ebx), %%ss\n", CONTEXTOFFSET(SegSs) );
2111 fprintf( outfile, "\tmovl %d(%%ebx), %%esp\n", CONTEXTOFFSET(Esp) );
2112 fprintf( outfile, "\taddl $4, %%esp\n" ); /* room for final return address */
2113
2114 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(SegCs) );
2115 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(Eip) );
2116 fprintf( outfile, "\tpushl %%edx\n" );
2117 fprintf( outfile, "\tpushl %%eax\n" );
2118 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(EFlags) );
2119 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(SegDs) );
2120
2121 fprintf( outfile, "\tmovw %d(%%ebx), %%es\n", CONTEXTOFFSET(SegEs) );
2122 fprintf( outfile, "\tmovw %d(%%ebx), %%fs\n", CONTEXTOFFSET(SegFs) );
2123 fprintf( outfile, "\tmovw %d(%%ebx), %%gs\n", CONTEXTOFFSET(SegGs) );
2124
2125 fprintf( outfile, "\tmovl %d(%%ebx), %%ebp\n", CONTEXTOFFSET(Ebp) );
2126 fprintf( outfile, "\tmovl %d(%%ebx), %%esi\n", CONTEXTOFFSET(Esi) );
2127 fprintf( outfile, "\tmovl %d(%%ebx), %%edi\n", CONTEXTOFFSET(Edi) );
2128 fprintf( outfile, "\tmovl %d(%%ebx), %%eax\n", CONTEXTOFFSET(Eax) );
2129 fprintf( outfile, "\tmovl %d(%%ebx), %%edx\n", CONTEXTOFFSET(Edx) );
2130 fprintf( outfile, "\tmovl %d(%%ebx), %%ecx\n", CONTEXTOFFSET(Ecx) );
2131 fprintf( outfile, "\tmovl %d(%%ebx), %%ebx\n", CONTEXTOFFSET(Ebx) );
2132
2133 fprintf( outfile, "\tpopl %%ds\n" );
2134 fprintf( outfile, "\tpopfl\n" );
2135 fprintf( outfile, "\tlret\n" );
2136 }
2137 else
2138 {
2139 /* Switch stack back */
2140 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2141 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2142 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2143
2144 /* Restore registers */
2145 fprintf( outfile, "\tpopl %%edx\n" );
2146 fprintf( outfile, "\tpopl %%ecx\n" );
2147 fprintf( outfile, "\tpopl %%ebp\n" );
2148 fprintf( outfile, "\tpopw %%ds\n" );
2149 fprintf( outfile, "\tpopw %%es\n" );
2150 fprintf( outfile, "\tpopw %%fs\n" );
2151 fprintf( outfile, "\tpopw %%gs\n" );
2152
2153 /* Prepare return value and set flags accordingly */
2154 if ( !short_ret )
2155 fprintf( outfile, "\tshldl $16, %%eax, %%edx\n" );
2156 fprintf( outfile, "\torl %%eax, %%eax\n" );
2157
2158 /* Return to return stub which will return to caller */
2159 fprintf( outfile, "\tlret $12\n" );
2160 }
2161 }
2162
2163
2164 /*******************************************************************
2165 * BuildCallTo16Core
2166 *
2167 * This routine builds the core routines used in 32->16 thunks:
2168 *
2169 * extern void CALLBACK CallTo16Word( SEGPTR target, int nb_args );
2170 * extern void CALLBACK CallTo16Long( SEGPTR target, int nb_args );
2171 * extern void CALLBACK CallTo16RegisterShort( const CONTEXT86 *context, int nb_args );
2172 * extern void CALLBACK CallTo16RegisterLong ( const CONTEXT86 *context, int nb_args );
2173 *
2174 * These routines can be called directly from 32-bit code.
2175 *
2176 * All routines expect that the 16-bit stack contents (arguments) were
2177 * already set up by the caller; nb_args must contain the number of bytes
2178 * to be conserved. The 16-bit SS:SP will be set accordinly.
2179 *
2180 * All other registers are either taken from the CONTEXT86 structure
2181 * or else set to default values. The target routine address is either
2182 * given directly or taken from the CONTEXT86.
2183 *
2184 * If you want to call a 16-bit routine taking only standard argument types
2185 * (WORD and LONG), you can also have an appropriate argument conversion
2186 * stub automatically generated (see BuildCallTo16); you'd then call this
2187 * stub, which in turn would prepare the 16-bit stack and call the appropiate
2188 * core routine.
2189 *
2190 */
2191
2192 static void BuildCallTo16Core( FILE *outfile, int short_ret, int reg_func )
2193 {
2194 char *name = reg_func == 2 ? "RegisterLong" :
2195 reg_func == 1 ? "RegisterShort" :
2196 short_ret? "Word" : "Long";
2197
2198 /* Function header */
2199 fprintf( outfile, "\n\t.align 4\n" );
2200 #ifdef USE_STABS
2201 fprintf( outfile, ".stabs \"CallTo16%s:F1\",36,0,0," PREFIX "CallTo16%s\n",
2202 name, name);
2203 #endif
2204 fprintf( outfile, "\t.type " PREFIX "CallTo16%s,@function\n", name );
2205 fprintf( outfile, "\t.globl " PREFIX "CallTo16%s\n", name );
2206 fprintf( outfile, PREFIX "CallTo16%s:\n", name );
2207
2208 /* Function entry sequence */
2209 fprintf( outfile, "\tpushl %%ebp\n" );
2210 fprintf( outfile, "\tmovl %%esp, %%ebp\n" );
2211
2212 /* Save the 32-bit registers */
2213 fprintf( outfile, "\tpushl %%ebx\n" );
2214 fprintf( outfile, "\tpushl %%ecx\n" );
2215 fprintf( outfile, "\tpushl %%edx\n" );
2216 fprintf( outfile, "\tpushl %%esi\n" );
2217 fprintf( outfile, "\tpushl %%edi\n" );
2218
2219 if ( UsePIC )
2220 {
2221 /* Get Global Offset Table into %ebx */
2222 fprintf( outfile, "\tcall .LCallTo16%s.getgot1\n", name );
2223 fprintf( outfile, ".LCallTo16%s.getgot1:\n", name );
2224 fprintf( outfile, "\tpopl %%ebx\n" );
2225 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot1], %%ebx\n", name );
2226 }
2227
2228 /* Enter Win16 Mutex */
2229 if ( UsePIC )
2230 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock@PLT\n" );
2231 else
2232 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock\n" );
2233
2234 /* Print debugging info */
2235 if (debugging)
2236 {
2237 /* Push flags, number of arguments, and target */
2238 fprintf( outfile, "\tpushl $%d\n", reg_func );
2239 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2240 fprintf( outfile, "\tpushl 8(%%ebp)\n" );
2241
2242 if ( UsePIC )
2243 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16@PLT\n" );
2244 else
2245 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16\n" );
2246
2247 fprintf( outfile, "\taddl $12, %%esp\n" );
2248 }
2249
2250 /* Get return address */
2251 if ( UsePIC )
2252 {
2253 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr@GOT(%%ebx), %%ecx\n" );
2254 fprintf( outfile, "\tmovl " PREFIX "(%%ecx), %%ecx\n" );
2255 }
2256 else
2257 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr, %%ecx\n" );
2258
2259 /* Call the actual CallTo16 routine (simulate a lcall) */
2260 fprintf( outfile, "\tpushl %%cs\n" );
2261 fprintf( outfile, "\tcall .LCallTo16%s\n", name );
2262
2263 /* Convert and push return value */
2264 if ( short_ret )
2265 {
2266 fprintf( outfile, "\tmovzwl %%ax, %%eax\n" );
2267 fprintf( outfile, "\tpushl %%eax\n" );
2268 }
2269 else if ( reg_func != 2 )
2270 {
2271 fprintf( outfile, "\tshll $16,%%edx\n" );
2272 fprintf( outfile, "\tmovw %%ax,%%dx\n" );
2273 fprintf( outfile, "\tpushl %%edx\n" );
2274 }
2275 else
2276 fprintf( outfile, "\tpushl %%eax\n" );
2277
2278 if ( UsePIC )
2279 {
2280 /* Get Global Offset Table into %ebx (might have been overwritten) */
2281 fprintf( outfile, "\tcall .LCallTo16%s.getgot2\n", name );
2282 fprintf( outfile, ".LCallTo16%s.getgot2:\n", name );
2283 fprintf( outfile, "\tpopl %%ebx\n" );
2284 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot2], %%ebx\n", name );
2285 }
2286
2287 /* Print debugging info */
2288 if (debugging)
2289 {
2290 if ( UsePIC )
2291 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret@PLT\n" );
2292 else
2293 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret\n" );
2294 }
2295
2296 /* Leave Win16 Mutex */
2297 if ( UsePIC )
2298 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock@PLT\n" );
2299 else
2300 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock\n" );
2301
2302 /* Get return value */
2303 fprintf( outfile, "\tpopl %%eax\n" );
2304
2305 /* Restore the 32-bit registers */
2306 fprintf( outfile, "\tpopl %%edi\n" );
2307 fprintf( outfile, "\tpopl %%esi\n" );
2308 fprintf( outfile, "\tpopl %%edx\n" );
2309 fprintf( outfile, "\tpopl %%ecx\n" );
2310 fprintf( outfile, "\tpopl %%ebx\n" );
2311
2312 /* Function exit sequence */
2313 fprintf( outfile, "\tpopl %%ebp\n" );
2314 fprintf( outfile, "\tret $8\n" );
2315
2316
2317 /* Start of the actual CallTo16 routine */
2318
2319 fprintf( outfile, ".LCallTo16%s:\n", name );
2320
2321 /* Complete STACK32FRAME */
2322 fprintf( outfile, "\t.byte 0x64\n\tpushl (%d)\n", STACKOFFSET );
2323 fprintf( outfile, "\tmovl %%esp,%%edx\n" );
2324
2325 /* Switch to the 16-bit stack */
2326 #ifdef __svr4__
2327 fprintf( outfile,"\tdata16\n");
2328 #endif
2329 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2);
2330 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET );
2331 fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET );
2332
2333 /* Make %bp point to the previous stackframe (built by CallFrom16) */
2334 fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" );
2335 fprintf( outfile, "\tleal %d(%%ebp),%%ebp\n", STACK16OFFSET(bp) );
2336
2337 /* Add the specified offset to the new sp */
2338 fprintf( outfile, "\tsubw %d(%%edx), %%sp\n", STACK32OFFSET(nb_args) );
2339
2340 /* Push the return address
2341 * With sreg suffix, we push 16:16 address (normal lret)
2342 * With lreg suffix, we push 16:32 address (0x66 lret, for KERNEL32_45)
2343 */
2344 if (reg_func != 2)
2345 fprintf( outfile, "\tpushl %%ecx\n" );
2346 else
2347 {
2348 fprintf( outfile, "\tshldl $16, %%ecx, %%eax\n" );
2349 fprintf( outfile, "\tpushw $0\n" );
2350 fprintf( outfile, "\tpushw %%ax\n" );
2351 fprintf( outfile, "\tpushw $0\n" );
2352 fprintf( outfile, "\tpushw %%cx\n" );
2353 }
2354
2355 if (reg_func)
2356 {
2357 /* Push the called routine address */
2358 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", STACK32OFFSET(target) );
2359 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegCs) );
2360 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(Eip) );
2361
2362 /* Get the registers */
2363 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegDs) );
2364 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegEs) );
2365 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2366 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegFs) );
2367 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2368 fprintf( outfile, "\tmovl %d(%%edx),%%ebp\n", CONTEXTOFFSET(Ebp) );
2369 fprintf( outfile, "\tmovl %d(%%edx),%%esi\n", CONTEXTOFFSET(Esi) );
2370 fprintf( outfile, "\tmovl %d(%%edx),%%edi\n", CONTEXTOFFSET(Edi) );
2371 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(Eax) );
2372 fprintf( outfile, "\tmovl %d(%%edx),%%ebx\n", CONTEXTOFFSET(Ebx) );
2373 fprintf( outfile, "\tmovl %d(%%edx),%%ecx\n", CONTEXTOFFSET(Ecx) );
2374 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", CONTEXTOFFSET(Edx) );
2375
2376 /* Get the 16-bit ds */
2377 fprintf( outfile, "\tpopw %%ds\n" );
2378 }
2379 else /* not a register function */
2380 {
2381 /* Push the called routine address */
2382 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK32OFFSET(target) );
2383
2384 /* Set %fs to the value saved by the last CallFrom16 */
2385 fprintf( outfile, "\tmovw %d(%%ebp),%%ax\n", STACK16OFFSET(fs)-STACK16OFFSET(bp) );
2386 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2387
2388 /* Set %ds and %es (and %ax just in case) equal to %ss */
2389 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2390 fprintf( outfile, "\tmovw %%ax,%%ds\n" );
2391 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2392 }
2393
2394 /* Jump to the called routine */
2395 fprintf( outfile, "\t.byte 0x66\n" );
2396 fprintf( outfile, "\tlret\n" );
2397 }
2398
2399 /*******************************************************************
2400 * BuildRet16Func
2401 *
2402 * Build the return code for 16-bit callbacks
2403 */
2404 static void BuildRet16Func( FILE *outfile )
2405 {
2406 /*
2407 * Note: This must reside in the .data section to allow
2408 * run-time relocation of the SYSLEVEL_Win16CurrentTeb symbol
2409 */
2410
2411 fprintf( outfile, "\n\t.type " PREFIX "CallTo16_Ret,@function\n" );
2412 fprintf( outfile, "\t.globl " PREFIX "CallTo16_Ret\n" );
2413 fprintf( outfile, PREFIX "CallTo16_Ret:\n" );
2414
2415 /* Restore 32-bit segment registers */
2416
2417 fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector );
2418 #ifdef __svr4__
2419 fprintf( outfile, "\tdata16\n");
2420 #endif
2421 fprintf( outfile, "\tmovw %%bx,%%ds\n" );
2422 #ifdef __svr4__
2423 fprintf( outfile, "\tdata16\n");
2424 #endif
2425 fprintf( outfile, "\tmovw %%bx,%%es\n" );
2426
2427 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb,%%fs\n" );
2428
2429 /* Restore the 32-bit stack */
2430
2431 #ifdef __svr4__
2432 fprintf( outfile, "\tdata16\n");
2433 #endif
2434 fprintf( outfile, "\tmovw %%bx,%%ss\n" );
2435 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%esp\n", STACKOFFSET );
2436 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2437
2438 /* Return to caller */
2439
2440 fprintf( outfile, "\tlret\n" );
2441
2442 /* Declare the return address variable */
2443
2444 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_RetAddr\n" );
2445 fprintf( outfile, PREFIX "CallTo16_RetAddr:\t.long 0\n" );
2446 }
2447
2448 /*******************************************************************
2449 * BuildCallTo32CBClient
2450 *
2451 * Call a CBClient relay stub from 32-bit code (KERNEL.620).
2452 *
2453 * Since the relay stub is itself 32-bit, this should not be a problem;
2454 * unfortunately, the relay stubs are expected to switch back to a
2455 * 16-bit stack (and 16-bit code) after completion :-(
2456 *
2457 * This would conflict with our 16- vs. 32-bit stack handling, so
2458 * we simply switch *back* to our 32-bit stack before returning to
2459 * the caller ...
2460 *
2461 * The CBClient relay stub expects to be called with the following
2462 * 16-bit stack layout, and with ebp and ebx pointing into the 16-bit
2463 * stack at the designated places:
2464 *
2465 * ...
2466 * (ebp+14) original arguments to the callback routine
2467 * (ebp+10) far return address to original caller
2468 * (ebp+6) Thunklet target address
2469 * (ebp+2) Thunklet relay ID code
2470 * (ebp) BP (saved by CBClientGlueSL)
2471 * (ebp-2) SI (saved by CBClientGlueSL)
2472 * (ebp-4) DI (saved by CBClientGlueSL)
2473 * (ebp-6) DS (saved by CBClientGlueSL)
2474 *
2475 * ... buffer space used by the 16-bit side glue for temp copies
2476 *
2477 * (ebx+4) far return address to 16-bit side glue code
2478 * (ebx) saved 16-bit ss:sp (pointing to ebx+4)
2479 *
2480 * The 32-bit side glue code accesses both the original arguments (via ebp)
2481 * and the temporary copies prepared by the 16-bit side glue (via ebx).
2482 * After completion, the stub will load ss:sp from the buffer at ebx
2483 * and perform a far return to 16-bit code.
2484 *
2485 * To trick the relay stub into returning to us, we replace the 16-bit
2486 * return address to the glue code by a cs:ip pair pointing to our
2487 * return entry point (the original return address is saved first).
2488 * Our return stub thus called will then reload the 32-bit ss:esp and
2489 * return to 32-bit code (by using and ss:esp value that we have also
2490 * pushed onto the 16-bit stack before and a cs:eip values found at
2491 * that position on the 32-bit stack). The ss:esp to be restored is
2492 * found relative to the 16-bit stack pointer at:
2493 *
2494 * (ebx-4) ss (flat)
2495 * (ebx-8) sp (32-bit stack pointer)
2496 *
2497 * The second variant of this routine, CALL32_CBClientEx, which is used
2498 * to implement KERNEL.621, has to cope with yet another problem: Here,
2499 * the 32-bit side directly returns to the caller of the CBClient thunklet,
2500 * restoring registers saved by CBClientGlueSL and cleaning up the stack.
2501 * As we have to return to our 32-bit code first, we have to adapt the
2502 * layout of our temporary area so as to include values for the registers
2503 * that are to be restored, and later (in the implementation of KERNEL.621)
2504 * we *really* restore them. The return stub restores DS, DI, SI, and BP
2505 * from the stack, skips the next 8 bytes (CBClient relay code / target),
2506 * and then performs a lret NN, where NN is the number of arguments to be
2507 * removed. Thus, we prepare our temporary area as follows:
2508 *
2509 * (ebx+22) 16-bit cs (this segment)
2510 * (ebx+20) 16-bit ip ('16-bit' return entry point)
2511 * (ebx+16) 32-bit ss (flat)
2512 * (ebx+12) 32-bit sp (32-bit stack pointer)
2513 * (ebx+10) 16-bit bp (points to ebx+24)
2514 * (ebx+8) 16-bit si (ignored)
2515 * (ebx+6) 16-bit di (ignored)
2516 * (ebx+4) 16-bit ds (we actually use the flat DS here)
2517 * (ebx+2) 16-bit ss (16-bit stack segment)
2518 * (ebx+0) 16-bit sp (points to ebx+4)
2519 *
2520 * Note that we ensure that DS is not changed and remains the flat segment,
2521 * and the 32-bit stack pointer our own return stub needs fits just
2522 * perfectly into the 8 bytes that are skipped by the Windows stub.
2523 * One problem is that we have to determine the number of removed arguments,
2524 * as these have to be really removed in KERNEL.621. Thus, the BP value
2525 * that we place in the temporary area to be restored, contains the value
2526 * that SP would have if no arguments were removed. By comparing the actual
2527 * value of SP with this value in our return stub we can compute the number
2528 * of removed arguments. This is then returned to KERNEL.621.
2529 *
2530 * The stack layout of this function:
2531 * (ebp+20) nArgs pointer to variable receiving nr. of args (Ex only)
2532 * (ebp+16) esi pointer to caller's esi value
2533 * (ebp+12) arg ebp value to be set for relay stub
2534 * (ebp+8) func CBClient relay stub address
2535 * (ebp+4) ret addr
2536 * (ebp) ebp
2537 */
2538 static void BuildCallTo32CBClient( FILE *outfile, BOOL isEx )
2539 {
2540 char *name = isEx? "CBClientEx" : "CBClient";
2541 int size = isEx? 24 : 12;
2542
2543 /* Function header */
2544
2545 fprintf( outfile, "\n\t.align 4\n" );
2546 #ifdef USE_STABS
2547 fprintf( outfile, ".stabs \"CALL32_%s:F1\",36,0,0," PREFIX "CALL32_%s\n",
2548 name, name );
2549 #endif
2550 fprintf( outfile, "\t.globl " PREFIX "CALL32_%s\n", name );
2551 fprintf( outfile, PREFIX "CALL32_%s:\n", name );
2552
2553 /* Entry code */
2554
2555 fprintf( outfile, "\tpushl %%ebp\n" );
2556 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2557 fprintf( outfile, "\tpushl %%edi\n" );
2558 fprintf( outfile, "\tpushl %%esi\n" );
2559 fprintf( outfile, "\tpushl %%ebx\n" );
2560
2561 /* Get the 16-bit stack */
2562
2563 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET);
2564
2565 /* Convert it to a flat address */
2566
2567 fprintf( outfile, "\tshldl $16,%%ebx,%%eax\n" );
2568 fprintf( outfile, "\tandl $0xfff8,%%eax\n" );
2569 fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%esi\n" );
2570 fprintf( outfile, "\tmovw %%bx,%%ax\n" );
2571 fprintf( outfile, "\taddl %%eax,%%esi\n" );
2572
2573 /* Allocate temporary area (simulate STACK16_PUSH) */
2574
2575 fprintf( outfile, "\tpushf\n" );
2576 fprintf( outfile, "\tcld\n" );
2577 fprintf( outfile, "\tleal -%d(%%esi), %%edi\n", size );
2578 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2579 fprintf( outfile, "\trep\n\tmovsb\n" );
2580 fprintf( outfile, "\tpopf\n" );
2581
2582 fprintf( outfile, "\t.byte 0x64\n\tsubw $%d,(%d)\n", size, STACKOFFSET );
2583
2584 fprintf( outfile, "\tpushl %%edi\n" ); /* remember address */
2585
2586 /* Set up temporary area */
2587
2588 if ( !isEx )
2589 {
2590 fprintf( outfile, "\tleal 4(%%edi), %%edi\n" );
2591
2592 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2593 fprintf( outfile, "\tmovl %%eax, -8(%%edi)\n" ); /* 32-bit sp */
2594
2595 fprintf( outfile, "\tmovw %%ss, %%ax\n" );
2596 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2597 fprintf( outfile, "\tmovl %%eax, -4(%%edi)\n" ); /* 32-bit ss */
2598
2599 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 + 4 );
2600 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" ); /* 16-bit ss:sp */
2601
2602 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2603 fprintf( outfile, "\tmovl %%eax, 4(%%edi)\n" ); /* overwrite return address */
2604 }
2605 else
2606 {
2607 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 );
2608 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" );
2609
2610 fprintf( outfile, "\tmovw %%ds, %%ax\n" );
2611 fprintf( outfile, "\tmovw %%ax, 4(%%edi)\n" );
2612
2613 fprintf( outfile, "\taddl $20, %%ebx\n" );
2614 fprintf( outfile, "\tmovw %%bx, 10(%%edi)\n" );
2615
2616 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2617 fprintf( outfile, "\tmovl %%eax, 12(%%edi)\n" );
2618
2619 fprintf( outfile, "\tmovw %%ss, %%ax\n" );
2620 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2621 fprintf( outfile, "\tmovl %%eax, 16(%%edi)\n" );
2622
2623 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2624 fprintf( outfile, "\tmovl %%eax, 20(%%edi)\n" );
2625 }
2626
2627 /* Set up registers and call CBClient relay stub (simulating a far call) */
2628
2629 fprintf( outfile, "\tmovl 16(%%ebp), %%esi\n" );
2630 fprintf( outfile, "\tmovl (%%esi), %%esi\n" );
2631
2632 fprintf( outfile, "\tmovl %%edi, %%ebx\n" );
2633 fprintf( outfile, "\tmovl 8(%%ebp), %%eax\n" );
2634 fprintf( outfile, "\tmovl 12(%%ebp), %%ebp\n" );
2635
2636 fprintf( outfile, "\tpushl %%cs\n" );
2637 fprintf( outfile, "\tcall *%%eax\n" );
2638
2639 /* Return new esi value to caller */
2640
2641 fprintf( outfile, "\tmovl 32(%%esp), %%edi\n" );
2642 fprintf( outfile, "\tmovl %%esi, (%%edi)\n" );
2643
2644 /* Cleanup temporary area (simulate STACK16_POP) */
2645
2646 fprintf( outfile, "\tpop %%esi\n" );
2647
2648 fprintf( outfile, "\tpushf\n" );
2649 fprintf( outfile, "\tstd\n" );
2650 fprintf( outfile, "\tdec %%esi\n" );
2651 fprintf( outfile, "\tleal %d(%%esi), %%edi\n", size );
2652 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2653 fprintf( outfile, "\trep\n\tmovsb\n" );
2654 fprintf( outfile, "\tpopf\n" );
2655
2656 fprintf( outfile, "\t.byte 0x64\n\taddw $%d,(%d)\n", size, STACKOFFSET );
2657
2658 /* Return argument size to caller */
2659 if ( isEx )
2660 {
2661 fprintf( outfile, "\tmovl 32(%%esp), %%ebx\n" );
2662 fprintf( outfile, "\tmovl %%ebp, (%%ebx)\n" );
2663 }
2664
2665 /* Restore registers and return */
2666
2667 fprintf( outfile, "\tpopl %%ebx\n" );
2668 fprintf( outfile, "\tpopl %%esi\n" );
2669 fprintf( outfile, "\tpopl %%edi\n" );
2670 fprintf( outfile, "\tpopl %%ebp\n" );
2671 fprintf( outfile, "\tret\n" );
2672 }
2673
2674 static void BuildCallTo32CBClientRet( FILE *outfile, BOOL isEx )
2675 {
2676 char *name = isEx? "CBClientEx" : "CBClient";
2677
2678 /* '16-bit' return stub */
2679
2680 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_Ret\n", name );
2681 fprintf( outfile, PREFIX "CALL32_%s_Ret:\n", name );
2682
2683 if ( !isEx )
2684 {
2685 fprintf( outfile, "\tmovzwl %%sp, %%ebx\n" );
2686 fprintf( outfile, "\tlssl %%ss:-16(%%ebx), %%esp\n" );
2687 }
2688 else
2689 {
2690 fprintf( outfile, "\tmovzwl %%bp, %%ebx\n" );
2691 fprintf( outfile, "\tsubw %%bp, %%sp\n" );
2692 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
2693 fprintf( outfile, "\tlssl %%ss:-12(%%ebx), %%esp\n" );
2694 }
2695 fprintf( outfile, "\tlret\n" );
2696
2697 /* Declare the return address variable */
2698
2699 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_RetAddr\n", name );
2700 fprintf( outfile, PREFIX "CALL32_%s_RetAddr:\t.long 0\n", name );
2701 }
2702
2703
2704 /*******************************************************************
2705 * BuildCallTo32LargeStack
2706 *
2707 * Build the function used to switch to the original 32-bit stack
2708 * before calling a 32-bit function from 32-bit code. This is used for
2709 * functions that need a large stack, like X bitmaps functions.
2710 *
2711 * The generated function has the following prototype:
2712 * int xxx( int (*func)(), void *arg );
2713 *
2714 * The pointer to the function can be retrieved by calling CALL32_Init,
2715 * which also takes care of saving the current 32-bit stack pointer.
2716 * Furthermore, CALL32_Init switches to a new stack and jumps to the
2717 * specified target address.
2718 *
2719 * NOTE: The CALL32_LargeStack routine may be recursively entered by the
2720 * same thread, but not concurrently entered by several threads.
2721 *
2722 * Stack layout of CALL32_Init:
2723 *
2724 * (esp+12) new stack address
2725 * (esp+8) target address
2726 * (esp+4) pointer to variable to receive CALL32_LargeStack address
2727 * (esp) ret addr
2728 *
2729 * Stack layout of CALL32_LargeStack:
2730 * ... ...
2731 * (ebp+12) arg
2732 * (ebp+8) func
2733 * (ebp+4) ret addr
2734 * (ebp) ebp
2735 */
2736 static void BuildCallTo32LargeStack( FILE *outfile )
2737 {
2738 /* Initialization function */
2739
2740 fprintf( outfile, "\n\t.align 4\n" );
2741 #ifdef USE_STABS
2742 fprintf( outfile, ".stabs \"CALL32_Init:F1\",36,0,0," PREFIX "CALL32_Init\n");
2743 #endif
2744 fprintf( outfile, "\t.globl " PREFIX "CALL32_Init\n" );
2745 fprintf( outfile, "\t.type " PREFIX "CALL32_Init,@function\n" );
2746 fprintf( outfile, PREFIX "CALL32_Init:\n" );
2747 fprintf( outfile, "\tmovl %%esp,CALL32_Original32_esp\n" );
2748 fprintf( outfile, "\tpopl %%eax\n" );
2749 fprintf( outfile, "\tpopl %%eax\n" );
2750 fprintf( outfile, "\tmovl $CALL32_LargeStack,(%%eax)\n" );
2751 fprintf( outfile, "\tpopl %%eax\n" );
2752 fprintf( outfile, "\tpopl %%esp\n" );
2753 fprintf( outfile, "\tpushl %%eax\n" );
2754 fprintf( outfile, "\tret\n" );
2755
2756 /* Function header */
2757
2758 fprintf( outfile, "\n\t.align 4\n" );
2759 #ifdef USE_STABS
2760 fprintf( outfile, ".stabs \"CALL32_LargeStack:F1\",36,0,0,CALL32_LargeStack\n");
2761 #endif
2762 fprintf( outfile, "CALL32_LargeStack:\n" );
2763
2764 /* Entry code */
2765
2766 fprintf( outfile, "\tpushl %%ebp\n" );
2767 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2768
2769 /* Switch to the original 32-bit stack pointer */
2770
2771 fprintf( outfile, "\tcmpl $0, CALL32_RecursionCount\n" );
2772 fprintf( outfile, "\tjne CALL32_skip\n" );
2773 fprintf( outfile, "\tmovl CALL32_Original32_esp, %%esp\n" );
2774 fprintf( outfile, "CALL32_skip:\n" );
2775
2776 fprintf( outfile, "\tincl CALL32_RecursionCount\n" );
2777
2778 /* Transfer the argument and call the function */
2779
2780 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2781 fprintf( outfile, "\tcall *8(%%ebp)\n" );
2782
2783 /* Restore registers and return */
2784
2785 fprintf( outfile, "\tdecl CALL32_RecursionCount\n" );
2786
2787 fprintf( outfile, "\tmovl %%ebp,%%esp\n" );
2788 fprintf( outfile, "\tpopl %%ebp\n" );
2789 fprintf( outfile, "\tret\n" );
2790
2791 /* Data */
2792
2793 fprintf( outfile, "\t.data\n" );
2794 fprintf( outfile, "CALL32_Original32_esp:\t.long 0\n" );
2795 fprintf( outfile, "CALL32_RecursionCount:\t.long 0\n" );
2796 fprintf( outfile, "\t.text\n" );
2797 }
2798
2799
2800 /*******************************************************************
2801 * BuildCallFrom32Regs
2802 *
2803 * Build a 32-bit-to-Wine call-back function for a 'register' function.
2804 * 'args' is the number of dword arguments.
2805 *
2806 * Stack layout:
2807 * ...
2808 * (ebp+12) first arg
2809 * (ebp+8) ret addr to user code
2810 * (ebp+4) ret addr to relay code
2811 * (ebp+0) saved ebp
2812 * (ebp-128) buffer area to allow stack frame manipulation
2813 * (ebp-332) CONTEXT86 struct
2814 * (ebp-336) CONTEXT86 *argument
2815 * .... other arguments copied from (ebp+12)
2816 *
2817 * The entry point routine is called with a CONTEXT* extra argument,
2818 * following the normal args. In this context structure, EIP_reg
2819 * contains the return address to user code, and ESP_reg the stack
2820 * pointer on return (with the return address and arguments already
2821 * removed).
2822 */
2823 static void BuildCallFrom32Regs( FILE *outfile )
2824 {
2825 static const int STACK_SPACE = 128 + sizeof(CONTEXT86);
2826
2827 /* Function header */
2828
2829 fprintf( outfile, "\n\t.align 4\n" );
2830 #ifdef USE_STABS
2831 fprintf( outfile, ".stabs \"CALL32_Regs:F1\",36,0,0," PREFIX "CALL32_Regs\n" );
2832 #endif
2833 fprintf( outfile, "\t.globl " PREFIX "CALL32_Regs\n" );
2834 fprintf( outfile, PREFIX "CALL32_Regs:\n" );
2835
2836 /* Allocate some buffer space on the stack */
2837
2838 fprintf( outfile, "\tpushl %%ebp\n" );
2839 fprintf( outfile, "\tmovl %%esp,%%ebp\n ");
2840 fprintf( outfile, "\tleal -%d(%%esp), %%esp\n", STACK_SPACE );
2841
2842 /* Build the context structure */
2843
2844 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2845 fprintf( outfile, "\tpushfl\n" );
2846 fprintf( outfile, "\tpopl %%eax\n" );
2847 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2848 fprintf( outfile, "\tmovl 0(%%ebp),%%eax\n" );
2849 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2850 fprintf( outfile, "\tmovl %%ebx,%d(%%ebp)\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2851 fprintf( outfile, "\tmovl %%ecx,%d(%%ebp)\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2852 fprintf( outfile, "\tmovl %%edx,%d(%%ebp)\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2853 fprintf( outfile, "\tmovl %%esi,%d(%%ebp)\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2854 fprintf( outfile, "\tmovl %%edi,%d(%%ebp)\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2855
2856 fprintf( outfile, "\txorl %%eax,%%eax\n" );
2857 fprintf( outfile, "\tmovw %%cs,%%ax\n" );
2858 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegCs) - STACK_SPACE );
2859 fprintf( outfile, "\tmovw %%es,%%ax\n" );
2860 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2861 fprintf( outfile, "\tmovw %%fs,%%ax\n" );
2862 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2863 fprintf( outfile, "\tmovw %%gs,%%ax\n" );
2864 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2865 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2866 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegSs) - STACK_SPACE );
2867 fprintf( outfile, "\tmovw %%ds,%%ax\n" );
2868 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegDs) - STACK_SPACE );
2869 fprintf( outfile, "\tmovw %%ax,%%es\n" ); /* set %es equal to %ds just in case */
2870
2871 fprintf( outfile, "\tmovl $0x%x,%%eax\n", CONTEXT86_FULL );
2872 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(ContextFlags) - STACK_SPACE );
2873
2874 fprintf( outfile, "\tmovl 8(%%ebp),%%eax\n" ); /* Get %eip at time of call */
2875 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2876
2877 /* Transfer the arguments */
2878
2879 fprintf( outfile, "\tmovl 4(%%ebp),%%ebx\n" ); /* get relay code addr */
2880 fprintf( outfile, "\tpushl %%esp\n" ); /* push ptr to context struct */
2881 fprintf( outfile, "\tmovzbl 4(%%ebx),%%ecx\n" ); /* fetch number of args to copy */
2882 fprintf( outfile, "\tjecxz 1f\n" );
2883 fprintf( outfile, "\tsubl %%ecx,%%esp\n" );
2884 fprintf( outfile, "\tleal 12(%%ebp),%%esi\n" ); /* get %esp at time of call */
2885 fprintf( outfile, "\tmovl %%esp,%%edi\n" );
2886 fprintf( outfile, "\tshrl $2,%%ecx\n" );
2887 fprintf( outfile, "\tcld\n" );
2888 fprintf( outfile, "\trep\n\tmovsl\n" ); /* copy args */
2889
2890 fprintf( outfile, "1:\tmovzbl 5(%%ebx),%%eax\n" ); /* fetch number of args to remove */
2891 fprintf( outfile, "\tleal 12(%%ebp,%%eax),%%eax\n" );
2892 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2893
2894 /* Call the entry point */
2895
2896 fprintf( outfile, "\tcall *0(%%ebx)\n" );
2897
2898 /* Store %eip and %ebp onto the new stack */
2899
2900 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2901 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2902 fprintf( outfile, "\tmovl %%eax,-4(%%edx)\n" );
2903 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2904 fprintf( outfile, "\tmovl %%eax,-8(%%edx)\n" );
2905
2906 /* Restore the context structure */
2907
2908 /* Note: we don't bother to restore %cs, %ds and %ss
2909 * changing them in 32-bit code is a recipe for disaster anyway
2910 */
2911 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2912 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2913 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2914 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2915 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2916 fprintf( outfile, "\tmovw %%ax,%%gs\n" );
2917
2918 fprintf( outfile, "\tmovl %d(%%ebp),%%edi\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2919 fprintf( outfile, "\tmovl %d(%%ebp),%%esi\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2920 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2921 fprintf( outfile, "\tmovl %d(%%ebp),%%ecx\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2922 fprintf( outfile, "\tmovl %d(%%ebp),%%ebx\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2923
2924 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2925 fprintf( outfile, "\tpushl %%eax\n" );
2926 fprintf( outfile, "\tpopfl\n" );
2927 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2928
2929 fprintf( outfile, "\tmovl %d(%%ebp),%%ebp\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2930 fprintf( outfile, "\tleal -8(%%ebp),%%esp\n" );
2931 fprintf( outfile, "\tpopl %%ebp\n" );
2932 fprintf( outfile, "\tret\n" );
2933 }
2934
2935
2936 /*******************************************************************
2937 * BuildGlue
2938 *
2939 * Build the 16-bit-to-Wine/Wine-to-16-bit callback glue code
2940 */
2941 static void BuildGlue( FILE *outfile, FILE *infile )
2942 {
2943 char buffer[1024];
2944
2945 /* File header */
2946
2947 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
2948 input_file_name );
2949 fprintf( outfile, "#include \"builtin16.h\"\n" );
2950 fprintf( outfile, "#include \"stackframe.h\"\n\n" );
2951
2952 /* Build the callback glue functions */
2953
2954 while (fgets( buffer, sizeof(buffer), infile ))
2955 {
2956 if (strstr( buffer, "### start build ###" )) break;
2957 }
2958 while (fgets( buffer, sizeof(buffer), infile ))
2959 {
2960 char *p;
2961 if ( (p = strstr( buffer, "CallFrom16_" )) != NULL )
2962 {
2963 char *q, *profile = p + strlen( "CallFrom16_" );
2964 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2965 ;
2966 *q = '\0';
2967 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
2968 ;
2969 if ( ++q < p ) p[-1] = '\0'; else q = "";
2970 BuildCallFrom16Func( outfile, profile, q, FALSE );
2971 }
2972 if ( (p = strstr( buffer, "CallTo16_" )) != NULL )
2973 {
2974 char *q, *profile = p + strlen( "CallTo16_" );
2975 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2976 ;
2977 *q = '\0';
2978 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
2979 ;
2980 if ( ++q < p ) p[-1] = '\0'; else q = "";
2981 BuildCallTo16Func( outfile, profile, q );
2982 }
2983 if (strstr( buffer, "### stop build ###" )) break;
2984 }
2985
2986 fclose( infile );
2987 }
2988
2989 /*******************************************************************
2990 * BuildCall16
2991 *
2992 * Build the 16-bit callbacks
2993 */
2994 static void BuildCall16( FILE *outfile )
2995 {
2996 /* File header */
2997
2998 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
2999 fprintf( outfile, "\t.text\n" );
3000
3001 #ifdef __i386__
3002
3003 #ifdef USE_STABS
3004 if (output_file_name)
3005 {
3006 char buffer[1024];
3007 getcwd(buffer, sizeof(buffer));
3008 fprintf( outfile, "\t.file\t\"%s\"\n", output_file_name );
3009
3010 /*
3011 * The stabs help the internal debugger as they are an indication that it
3012 * is sensible to step into a thunk/trampoline.
3013 */
3014 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
3015 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", output_file_name );
3016 fprintf( outfile, "Code_Start:\n\n" );
3017 }
3018 #endif
3019 fprintf( outfile, PREFIX"Call16_Start:\n" );
3020 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
3021 fprintf( outfile, "\t.byte 0\n\n" );
3022
3023
3024 /* Standard CallFrom16 routine (WORD return) */
3025 BuildCallFrom16Core( outfile, FALSE, FALSE, TRUE );
3026
3027 /* Standard CallFrom16 routine (DWORD return) */
3028 BuildCallFrom16Core( outfile, FALSE, FALSE, FALSE );
3029
3030 /* Register CallFrom16 routine */
3031 BuildCallFrom16Core( outfile, TRUE, FALSE, FALSE );
3032
3033 /* C16ThkSL CallFrom16 routine */
3034 BuildCallFrom16Core( outfile, FALSE, TRUE, FALSE );
3035
3036 /* Standard CallTo16 routine (WORD return) */
3037 BuildCallTo16Core( outfile, TRUE, FALSE );
3038
3039 /* Standard CallTo16 routine (DWORD return) */
3040 BuildCallTo16Core( outfile, FALSE, FALSE );
3041
3042 /* Register CallTo16 routine (16:16 retf) */
3043 BuildCallTo16Core( outfile, FALSE, 1 );
3044
3045 /* Register CallTo16 routine (16:32 retf) */
3046 BuildCallTo16Core( outfile, FALSE, 2 );
3047
3048 /* CBClientThunkSL routine */
3049 BuildCallTo32CBClient( outfile, FALSE );
3050
3051 /* CBClientThunkSLEx routine */
3052 BuildCallTo32CBClient( outfile, TRUE );
3053
3054 fprintf( outfile, PREFIX"Call16_End:\n" );
3055 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
3056
3057 #ifdef USE_STABS
3058 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3059 fprintf( outfile, ".Letext:\n");
3060 #endif
3061
3062 /* The whole Call16_Ret segment must lie within the .data section */
3063 fprintf( outfile, "\n\t.data\n" );
3064 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
3065 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
3066
3067 /* Standard CallTo16 return stub */
3068 BuildRet16Func( outfile );
3069
3070 /* CBClientThunkSL return stub */
3071 BuildCallTo32CBClientRet( outfile, FALSE );
3072
3073 /* CBClientThunkSLEx return stub */
3074 BuildCallTo32CBClientRet( outfile, TRUE );
3075
3076 /* End of Call16_Ret segment */
3077 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3078 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3079
3080 #else /* __i386__ */
3081
3082 fprintf( outfile, PREFIX"Call16_Start:\n" );
3083 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
3084 fprintf( outfile, "\t.byte 0\n\n" );
3085 fprintf( outfile, PREFIX"Call16_End:\n" );
3086 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
3087
3088 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
3089 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
3090 fprintf( outfile, "\t.byte 0\n\n" );
3091 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3092 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3093
3094 #endif /* __i386__ */
3095 }
3096
3097 /*******************************************************************
3098 * BuildCall32
3099 *
3100 * Build the 32-bit callbacks
3101 */
3102 static void BuildCall32( FILE *outfile )
3103 {
3104 /* File header */
3105
3106 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
3107 fprintf( outfile, "\t.text\n" );
3108
3109 #ifdef __i386__
3110
3111 #ifdef USE_STABS
3112 if (output_file_name)
3113 {
3114 char buffer[1024];
3115 getcwd(buffer, sizeof(buffer));
3116 fprintf( outfile, "\t.file\t\"%s\"\n", output_file_name );
3117
3118 /*
3119 * The stabs help the internal debugger as they are an indication that it
3120 * is sensible to step into a thunk/trampoline.
3121 */
3122 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
3123 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", output_file_name );
3124 fprintf( outfile, "Code_Start:\n" );
3125 }
3126 #endif
3127
3128 /* Build the 32-bit large stack callback */
3129
3130 BuildCallTo32LargeStack( outfile );
3131
3132 /* Build the register callback function */
3133
3134 BuildCallFrom32Regs( outfile );
3135
3136 #ifdef USE_STABS
3137 fprintf( outfile, "\t.text\n");
3138 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3139 fprintf( outfile, ".Letext:\n");
3140 #endif
3141
3142 #else /* __i386__ */
3143
3144 /* Just to avoid an empty file */
3145 fprintf( outfile, "\t.long 0\n" );
3146
3147 #endif /* __i386__ */
3148 }
3149
3150
3151 /*******************************************************************
3152 * usage
3153 */
3154 static void usage(void)
3155 {
3156 fprintf( stderr,
3157 "usage: build [-pic] [-o outfile] -spec SPEC_FILE\n"
3158 " build [-pic] [-o outfile] -glue SOURCE_FILE\n"
3159 " build [-pic] [-o outfile] -call16\n"
3160 " build [-pic] [-o outfile] -call32\n" );
3161 if (output_file_name) unlink( output_file_name );
3162 exit(1);
3163 }
3164
3165
3166 /*******************************************************************
3167 * open_input
3168 */
3169 static FILE *open_input( const char *name )
3170 {
3171 FILE *f;
3172
3173 if (!name)
3174 {
3175 input_file_name = "<stdin>";
3176 return stdin;
3177 }
3178 input_file_name = name;
3179 if (!(f = fopen( name, "r" )))
3180 {
3181 fprintf( stderr, "Cannot open input file '%s'\n", name );
3182 if (output_file_name) unlink( output_file_name );
3183 exit(1);
3184 }
3185 return f;
3186 }
3187
3188 /*******************************************************************
3189 * main
3190 */
3191 int main(int argc, char **argv)
3192 {
3193 FILE *outfile = stdout;
3194
3195 if (argc < 2) usage();
3196
3197 if (!strcmp( argv[1], "-pic" ))
3198 {
3199 UsePIC = 1;
3200 argv += 1;
3201 argc -= 1;
3202 if (argc < 2) usage();
3203 }
3204
3205 if (!strcmp( argv[1], "-o" ))
3206 {
3207 output_file_name = argv[2];
3208 argv += 2;
3209 argc -= 2;
3210 if (argc < 2) usage();
3211 if (!(outfile = fopen( output_file_name, "w" )))
3212 {
3213 fprintf( stderr, "Unable to create output file '%s'\n", output_file_name );
3214 exit(1);
3215 }
3216 }
3217
3218 /* Retrieve the selector values; this assumes that we are building
3219 * the asm files on the platform that will also run them. Probably
3220 * a safe assumption to make.
3221 */
3222 Code_Selector = __get_cs();
3223 Data_Selector = __get_ds();
3224
3225 if (!strcmp( argv[1], "-spec" )) BuildSpecFile( outfile, open_input( argv[2] ) );
3226 else if (!strcmp( argv[1], "-glue" )) BuildGlue( outfile, open_input( argv[2] ) );
3227 else if (!strcmp( argv[1], "-call16" )) BuildCall16( outfile );
3228 else if (!strcmp( argv[1], "-call32" )) BuildCall32( outfile );
3229 else
3230 {
3231 fclose( outfile );
3232 usage();
3233 }
3234
3235 fclose( outfile );
3236 return 0;
3237 }
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