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Made debug events and contexts standard objects.
[wine/multimedia.git] / tools / build.c
blob8b60e955e5c4433f1257d8ad5fb0b25f3d2bfcda
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 "selectors.h"
24 #include "stackframe.h"
25 #include "builtin16.h"
26 #include "thread.h"
27
28 #ifdef NEED_UNDERSCORE_PREFIX
29 # define PREFIX "_"
30 #else
31 # define PREFIX
32 #endif
33
34 #ifdef HAVE_ASM_STRING
35 # define STRING ".string"
36 #else
37 # define STRING ".ascii"
38 #endif
39
40 #if defined(__GNUC__) && !defined(__svr4__)
41 # define USE_STABS
42 #else
43 # undef USE_STABS
44 #endif
45
46 typedef enum
47 {
48 TYPE_BYTE, /* byte variable (Win16) */
49 TYPE_WORD, /* word variable (Win16) */
50 TYPE_LONG, /* long variable (Win16) */
51 TYPE_PASCAL_16, /* pascal function with 16-bit return (Win16) */
52 TYPE_PASCAL, /* pascal function with 32-bit return (Win16) */
53 TYPE_ABS, /* absolute value (Win16) */
54 TYPE_REGISTER, /* register function */
55 TYPE_INTERRUPT, /* interrupt handler function (Win16) */
56 TYPE_STUB, /* unimplemented stub */
57 TYPE_STDCALL, /* stdcall function (Win32) */
58 TYPE_CDECL, /* cdecl function (Win32) */
59 TYPE_VARARGS, /* varargs function (Win32) */
60 TYPE_EXTERN, /* external symbol (Win32) */
61 TYPE_FORWARD, /* forwarded function (Win32) */
62 TYPE_NBTYPES
63 } ORD_TYPE;
64
65 static const char * const TypeNames[TYPE_NBTYPES] =
66 {
67 "byte", /* TYPE_BYTE */
68 "word", /* TYPE_WORD */
69 "long", /* TYPE_LONG */
70 "pascal16", /* TYPE_PASCAL_16 */
71 "pascal", /* TYPE_PASCAL */
72 "equate", /* TYPE_ABS */
73 "register", /* TYPE_REGISTER */
74 "interrupt", /* TYPE_INTERRUPT */
75 "stub", /* TYPE_STUB */
76 "stdcall", /* TYPE_STDCALL */
77 "cdecl", /* TYPE_CDECL */
78 "varargs", /* TYPE_VARARGS */
79 "extern", /* TYPE_EXTERN */
80 "forward" /* TYPE_FORWARD */
81 };
82
83 #define MAX_ORDINALS 2048
84 #define MAX_IMPORTS 16
85
86 /* Callback function used for stub functions */
87 #define STUB_CALLBACK \
88 ((SpecType == SPEC_WIN16) ? "RELAY_Unimplemented16": "RELAY_Unimplemented32")
89
90 typedef enum
91 {
92 SPEC_INVALID,
93 SPEC_WIN16,
94 SPEC_WIN32
95 } SPEC_TYPE;
96
97 typedef struct
98 {
99 int n_values;
100 int *values;
101 } ORD_VARIABLE;
102
103 typedef struct
104 {
105 int n_args;
106 char arg_types[32];
107 char link_name[80];
108 } ORD_FUNCTION;
109
110 typedef struct
111 {
112 int value;
113 } ORD_ABS;
114
115 typedef struct
116 {
117 char link_name[80];
118 } ORD_EXTERN;
119
120 typedef struct
121 {
122 char link_name[80];
123 } ORD_FORWARD;
124
125 typedef struct
126 {
127 ORD_TYPE type;
128 int ordinal;
129 int offset;
130 int lineno;
131 char name[80];
132 union
133 {
134 ORD_VARIABLE var;
135 ORD_FUNCTION func;
136 ORD_ABS abs;
137 ORD_EXTERN ext;
138 ORD_FORWARD fwd;
139 } u;
140 } ORDDEF;
141
142 static ORDDEF EntryPoints[MAX_ORDINALS];
143 static ORDDEF *Ordinals[MAX_ORDINALS];
144 static ORDDEF *Names[MAX_ORDINALS];
145
146 static SPEC_TYPE SpecType = SPEC_INVALID;
147 static char DLLName[80];
148 static char DLLFileName[80];
149 static int Limit = 0;
150 static int Base = MAX_ORDINALS;
151 static int DLLHeapSize = 0;
152 static FILE *SpecFp;
153 static WORD Code_Selector, Data_Selector;
154 static char DLLInitFunc[80];
155 static char *DLLImports[MAX_IMPORTS];
156 static int nb_imports;
157 static int nb_entry_points;
158 static int nb_names;
159 static const char *input_file_name;
160 static const char *output_file_name;
161
162 char *ParseBuffer = NULL;
163 char *ParseNext;
164 char ParseSaveChar;
165 int Line;
166
167 static int UsePIC = 0;
168
169 static int debugging = 1;
170
171 /* Offset of a structure field relative to the start of the struct */
172 #define STRUCTOFFSET(type,field) ((int)&((type *)0)->field)
173
174 /* Offset of register relative to the start of the CONTEXT struct */
175 #define CONTEXTOFFSET(reg) STRUCTOFFSET(CONTEXT86,reg)
176
177 /* Offset of register relative to the start of the STACK16FRAME struct */
178 #define STACK16OFFSET(reg) STRUCTOFFSET(STACK16FRAME,reg)
179
180 /* Offset of register relative to the start of the STACK32FRAME struct */
181 #define STACK32OFFSET(reg) STRUCTOFFSET(STACK32FRAME,reg)
182
183 /* Offset of the stack pointer relative to %fs:(0) */
184 #define STACKOFFSET (STRUCTOFFSET(TEB,cur_stack))
185
186 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local );
187
188 static void *xmalloc (size_t size)
189 {
190 void *res;
191
192 res = malloc (size ? size : 1);
193 if (res == NULL)
194 {
195 fprintf (stderr, "Virtual memory exhausted.\n");
196 if (output_file_name) unlink( output_file_name );
197 exit (1);
198 }
199 return res;
200 }
201
202
203 static void *xrealloc (void *ptr, size_t size)
204 {
205 void *res = realloc (ptr, size);
206 if (res == NULL)
207 {
208 fprintf (stderr, "Virtual memory exhausted.\n");
209 if (output_file_name) unlink( output_file_name );
210 exit (1);
211 }
212 return res;
213 }
214
215 static char *xstrdup( const char *str )
216 {
217 char *res = strdup( str );
218 if (!res)
219 {
220 fprintf (stderr, "Virtual memory exhausted.\n");
221 if (output_file_name) unlink( output_file_name );
222 exit (1);
223 }
224 return res;
225 }
226
227 static void fatal_error( const char *msg, ... )
228 {
229 va_list valist;
230 va_start( valist, msg );
231 fprintf( stderr, "%s:%d: ", input_file_name, Line );
232 vfprintf( stderr, msg, valist );
233 va_end( valist );
234 if (output_file_name) unlink( output_file_name );
235 exit(1);
236 }
237
238 static int IsNumberString(char *s)
239 {
240 while (*s != '\0')
241 if (!isdigit(*s++))
242 return 0;
243
244 return 1;
245 }
246
247 static char *strupper(char *s)
248 {
249 char *p;
250
251 for(p = s; *p != '\0'; p++)
252 *p = toupper(*p);
253
254 return s;
255 }
256
257 static char * GetTokenInLine(void)
258 {
259 char *p;
260 char *token;
261
262 if (ParseNext != ParseBuffer)
263 {
264 if (ParseSaveChar == '\0')
265 return NULL;
266 *ParseNext = ParseSaveChar;
267 }
268
269 /*
270 * Remove initial white space.
271 */
272 for (p = ParseNext; isspace(*p); p++)
273 ;
274
275 if ((*p == '\0') || (*p == '#'))
276 return NULL;
277
278 /*
279 * Find end of token.
280 */
281 token = p++;
282 if (*token != '(' && *token != ')')
283 while (*p != '\0' && *p != '(' && *p != ')' && !isspace(*p))
284 p++;
285
286 ParseSaveChar = *p;
287 ParseNext = p;
288 *p = '\0';
289
290 return token;
291 }
292
293 static char * GetToken(void)
294 {
295 char *token;
296
297 if (ParseBuffer == NULL)
298 {
299 ParseBuffer = xmalloc(512);
300 ParseNext = ParseBuffer;
301 while (1)
302 {
303 Line++;
304 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
305 return NULL;
306 if (ParseBuffer[0] != '#')
307 break;
308 }
309 }
310
311 while ((token = GetTokenInLine()) == NULL)
312 {
313 ParseNext = ParseBuffer;
314 while (1)
315 {
316 Line++;
317 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
318 return NULL;
319 if (ParseBuffer[0] != '#')
320 break;
321 }
322 }
323
324 return token;
325 }
326
327
328 static int name_compare( const void *name1, const void *name2 )
329 {
330 ORDDEF *odp1 = *(ORDDEF **)name1;
331 ORDDEF *odp2 = *(ORDDEF **)name2;
332 return strcmp( odp1->name, odp2->name );
333 }
334
335 /*******************************************************************
336 * AssignOrdinals
337 *
338 * Assign ordinals to all entry points.
339 */
340 static void AssignOrdinals(void)
341 {
342 int i, ordinal;
343
344 /* sort the list of names */
345 qsort( Names, nb_names, sizeof(Names[0]), name_compare );
346
347 /* check for duplicate names */
348 for (i = 0; i < nb_names - 1; i++)
349 {
350 if (!strcmp( Names[i]->name, Names[i+1]->name ))
351 {
352 Line = MAX( Names[i]->lineno, Names[i+1]->lineno );
353 fatal_error( "'%s' redefined (previous definition at line %d)\n",
354 Names[i]->name, MIN( Names[i]->lineno, Names[i+1]->lineno ) );
355 }
356 }
357
358 /* start assigning from Base, or from 1 if no ordinal defined yet */
359 if (Base == MAX_ORDINALS) Base = 1;
360 for (i = 0, ordinal = Base; i < nb_names; i++)
361 {
362 if (Names[i]->ordinal != -1) continue; /* already has an ordinal */
363 while (Ordinals[ordinal]) ordinal++;
364 if (ordinal >= MAX_ORDINALS)
365 {
366 Line = Names[i]->lineno;
367 fatal_error( "Too many functions defined (max %d)\n", MAX_ORDINALS );
368 }
369 Names[i]->ordinal = ordinal;
370 Ordinals[ordinal] = Names[i];
371 }
372 if (ordinal > Limit) Limit = ordinal;
373 }
374
375
376 /*******************************************************************
377 * ParseVariable
378 *
379 * Parse a variable definition.
380 */
381 static void ParseVariable( ORDDEF *odp )
382 {
383 char *endptr;
384 int *value_array;
385 int n_values;
386 int value_array_size;
387
388 char *token = GetToken();
389 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
390
391 n_values = 0;
392 value_array_size = 25;
393 value_array = xmalloc(sizeof(*value_array) * value_array_size);
394
395 while ((token = GetToken()) != NULL)
396 {
397 if (*token == ')')
398 break;
399
400 value_array[n_values++] = strtol(token, &endptr, 0);
401 if (n_values == value_array_size)
402 {
403 value_array_size += 25;
404 value_array = xrealloc(value_array,
405 sizeof(*value_array) * value_array_size);
406 }
407
408 if (endptr == NULL || *endptr != '\0')
409 fatal_error( "Expected number value, got '%s'\n", token );
410 }
411
412 if (token == NULL)
413 fatal_error( "End of file in variable declaration\n" );
414
415 odp->u.var.n_values = n_values;
416 odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values);
417 }
418
419
420 /*******************************************************************
421 * ParseExportFunction
422 *
423 * Parse a function definition.
424 */
425 static void ParseExportFunction( ORDDEF *odp )
426 {
427 char *token;
428 int i;
429
430 switch(SpecType)
431 {
432 case SPEC_WIN16:
433 if (odp->type == TYPE_STDCALL)
434 fatal_error( "'stdcall' not supported for Win16\n" );
435 if (odp->type == TYPE_VARARGS)
436 fatal_error( "'varargs' not supported for Win16\n" );
437 break;
438 case SPEC_WIN32:
439 if ((odp->type == TYPE_PASCAL) || (odp->type == TYPE_PASCAL_16))
440 fatal_error( "'pascal' not supported for Win32\n" );
441 break;
442 default:
443 break;
444 }
445
446 token = GetToken();
447 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
448
449 for (i = 0; i < sizeof(odp->u.func.arg_types)-1; i++)
450 {
451 token = GetToken();
452 if (*token == ')')
453 break;
454
455 if (!strcmp(token, "word"))
456 odp->u.func.arg_types[i] = 'w';
457 else if (!strcmp(token, "s_word"))
458 odp->u.func.arg_types[i] = 's';
459 else if (!strcmp(token, "long") || !strcmp(token, "segptr"))
460 odp->u.func.arg_types[i] = 'l';
461 else if (!strcmp(token, "ptr"))
462 odp->u.func.arg_types[i] = 'p';
463 else if (!strcmp(token, "str"))
464 odp->u.func.arg_types[i] = 't';
465 else if (!strcmp(token, "wstr"))
466 odp->u.func.arg_types[i] = 'W';
467 else if (!strcmp(token, "segstr"))
468 odp->u.func.arg_types[i] = 'T';
469 else if (!strcmp(token, "double"))
470 {
471 odp->u.func.arg_types[i++] = 'l';
472 odp->u.func.arg_types[i] = 'l';
473 }
474 else fatal_error( "Unknown variable type '%s'\n", token );
475
476 if (SpecType == SPEC_WIN32)
477 {
478 if (strcmp(token, "long") &&
479 strcmp(token, "ptr") &&
480 strcmp(token, "str") &&
481 strcmp(token, "wstr") &&
482 strcmp(token, "double"))
483 {
484 fatal_error( "Type '%s' not supported for Win32\n", token );
485 }
486 }
487 }
488 if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types)))
489 fatal_error( "Too many arguments\n" );
490
491 odp->u.func.arg_types[i] = '\0';
492 if ((odp->type == TYPE_STDCALL) && !i)
493 odp->type = TYPE_CDECL; /* stdcall is the same as cdecl for 0 args */
494 strcpy(odp->u.func.link_name, GetToken());
495 }
496
497
498 /*******************************************************************
499 * ParseEquate
500 *
501 * Parse an 'equate' definition.
502 */
503 static void ParseEquate( ORDDEF *odp )
504 {
505 char *endptr;
506
507 char *token = GetToken();
508 int value = strtol(token, &endptr, 0);
509 if (endptr == NULL || *endptr != '\0')
510 fatal_error( "Expected number value, got '%s'\n", token );
511 if (SpecType == SPEC_WIN32)
512 fatal_error( "'equate' not supported for Win32\n" );
513 odp->u.abs.value = value;
514 }
515
516
517 /*******************************************************************
518 * ParseStub
519 *
520 * Parse a 'stub' definition.
521 */
522 static void ParseStub( ORDDEF *odp )
523 {
524 odp->u.func.arg_types[0] = '\0';
525 strcpy( odp->u.func.link_name, STUB_CALLBACK );
526 }
527
528
529 /*******************************************************************
530 * ParseInterrupt
531 *
532 * Parse an 'interrupt' definition.
533 */
534 static void ParseInterrupt( ORDDEF *odp )
535 {
536 char *token;
537
538 if (SpecType == SPEC_WIN32)
539 fatal_error( "'interrupt' not supported for Win32\n" );
540
541 token = GetToken();
542 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
543
544 token = GetToken();
545 if (*token != ')') fatal_error( "Expected ')' got '%s'\n", token );
546
547 odp->u.func.arg_types[0] = '\0';
548 strcpy( odp->u.func.link_name, GetToken() );
549 }
550
551
552 /*******************************************************************
553 * ParseExtern
554 *
555 * Parse an 'extern' definition.
556 */
557 static void ParseExtern( ORDDEF *odp )
558 {
559 if (SpecType == SPEC_WIN16) fatal_error( "'extern' not supported for Win16\n" );
560 strcpy( odp->u.ext.link_name, GetToken() );
561 }
562
563
564 /*******************************************************************
565 * ParseForward
566 *
567 * Parse a 'forward' definition.
568 */
569 static void ParseForward( ORDDEF *odp )
570 {
571 if (SpecType == SPEC_WIN16) fatal_error( "'forward' not supported for Win16\n" );
572 strcpy( odp->u.fwd.link_name, GetToken() );
573 }
574
575
576 /*******************************************************************
577 * ParseOrdinal
578 *
579 * Parse an ordinal definition.
580 */
581 static void ParseOrdinal(int ordinal)
582 {
583 char *token;
584
585 ORDDEF *odp = &EntryPoints[nb_entry_points++];
586
587 if (!(token = GetToken())) fatal_error( "Expected type after ordinal\n" );
588
589 for (odp->type = 0; odp->type < TYPE_NBTYPES; odp->type++)
590 if (TypeNames[odp->type] && !strcmp( token, TypeNames[odp->type] ))
591 break;
592
593 if (odp->type >= TYPE_NBTYPES)
594 fatal_error( "Expected type after ordinal, found '%s' instead\n", token );
595
596 if (!(token = GetToken())) fatal_error( "Expected name after type\n" );
597
598 strcpy( odp->name, token );
599 odp->lineno = Line;
600 odp->ordinal = ordinal;
601
602 switch(odp->type)
603 {
604 case TYPE_BYTE:
605 case TYPE_WORD:
606 case TYPE_LONG:
607 ParseVariable( odp );
608 break;
609 case TYPE_REGISTER:
610 ParseExportFunction( odp );
611 #ifndef __i386__
612 /* ignore Win32 'register' routines on non-Intel archs */
613 if (SpecType == SPEC_WIN32)
614 {
615 nb_entry_points--;
616 return;
617 }
618 #endif
619 break;
620 case TYPE_PASCAL_16:
621 case TYPE_PASCAL:
622 case TYPE_STDCALL:
623 case TYPE_VARARGS:
624 case TYPE_CDECL:
625 ParseExportFunction( odp );
626 break;
627 case TYPE_INTERRUPT:
628 ParseInterrupt( odp );
629 break;
630 case TYPE_ABS:
631 ParseEquate( odp );
632 break;
633 case TYPE_STUB:
634 ParseStub( odp );
635 break;
636 case TYPE_EXTERN:
637 ParseExtern( odp );
638 break;
639 case TYPE_FORWARD:
640 ParseForward( odp );
641 break;
642 default:
643 assert( 0 );
644 }
645
646 if (ordinal != -1)
647 {
648 if (ordinal >= MAX_ORDINALS) fatal_error( "Ordinal number %d too large\n", ordinal );
649 if (ordinal > Limit) Limit = ordinal;
650 if (ordinal < Base) Base = ordinal;
651 odp->ordinal = ordinal;
652 Ordinals[ordinal] = odp;
653 }
654
655 if (!strcmp( odp->name, "@" ))
656 {
657 if (ordinal == -1)
658 fatal_error( "Nameless function needs an explicit ordinal number\n" );
659 if (SpecType != SPEC_WIN32)
660 fatal_error( "Nameless functions not supported for Win16\n" );
661 odp->name[0] = 0;
662 }
663 else Names[nb_names++] = odp;
664 }
665
666
667 /*******************************************************************
668 * ParseTopLevel
669 *
670 * Parse a spec file.
671 */
672 static void ParseTopLevel(void)
673 {
674 char *token;
675
676 while ((token = GetToken()) != NULL)
677 {
678 if (strcmp(token, "name") == 0)
679 {
680 strcpy(DLLName, GetToken());
681 strupper(DLLName);
682 if (!DLLFileName[0]) sprintf( DLLFileName, "%s.DLL", DLLName );
683 }
684 else if (strcmp(token, "file") == 0)
685 {
686 strcpy(DLLFileName, GetToken());
687 strupper(DLLFileName);
688 }
689 else if (strcmp(token, "type") == 0)
690 {
691 token = GetToken();
692 if (!strcmp(token, "win16" )) SpecType = SPEC_WIN16;
693 else if (!strcmp(token, "win32" )) SpecType = SPEC_WIN32;
694 else fatal_error( "Type must be 'win16' or 'win32'\n" );
695 }
696 else if (strcmp(token, "heap") == 0)
697 {
698 token = GetToken();
699 if (!IsNumberString(token)) fatal_error( "Expected number after heap\n" );
700 DLLHeapSize = atoi(token);
701 }
702 else if (strcmp(token, "init") == 0)
703 {
704 strcpy(DLLInitFunc, GetToken());
705 if (SpecType == SPEC_WIN16)
706 fatal_error( "init cannot be used for Win16 spec files\n" );
707 if (!DLLInitFunc[0])
708 fatal_error( "Expected function name after init\n" );
709 }
710 else if (strcmp(token, "import") == 0)
711 {
712 if (nb_imports >= MAX_IMPORTS)
713 fatal_error( "Too many imports (limit %d)\n", MAX_IMPORTS );
714 if (SpecType != SPEC_WIN32)
715 fatal_error( "Imports not supported for Win16\n" );
716 DLLImports[nb_imports++] = xstrdup(GetToken());
717 }
718 else if (strcmp(token, "@") == 0)
719 {
720 if (SpecType != SPEC_WIN32)
721 fatal_error( "'@' ordinals not supported for Win16\n" );
722 ParseOrdinal( -1 );
723 }
724 else if (IsNumberString(token))
725 {
726 ParseOrdinal( atoi(token) );
727 }
728 else
729 fatal_error( "Expected name, id, length or ordinal\n" );
730 }
731 }
732
733
734 /*******************************************************************
735 * StoreVariableCode
736 *
737 * Store a list of ints into a byte array.
738 */
739 static int StoreVariableCode( unsigned char *buffer, int size, ORDDEF *odp )
740 {
741 int i;
742
743 switch(size)
744 {
745 case 1:
746 for (i = 0; i < odp->u.var.n_values; i++)
747 buffer[i] = odp->u.var.values[i];
748 break;
749 case 2:
750 for (i = 0; i < odp->u.var.n_values; i++)
751 ((unsigned short *)buffer)[i] = odp->u.var.values[i];
752 break;
753 case 4:
754 for (i = 0; i < odp->u.var.n_values; i++)
755 ((unsigned int *)buffer)[i] = odp->u.var.values[i];
756 break;
757 }
758 return odp->u.var.n_values * size;
759 }
760
761
762 /*******************************************************************
763 * DumpBytes
764 *
765 * Dump a byte stream into the assembly code.
766 */
767 static void DumpBytes( FILE *outfile, const unsigned char *data, int len,
768 const char *label )
769 {
770 int i;
771
772 fprintf( outfile, "\nstatic BYTE %s[] = \n{", label );
773
774 for (i = 0; i < len; i++)
775 {
776 if (!(i & 0x0f)) fprintf( outfile, "\n " );
777 fprintf( outfile, "%d", *data++ );
778 if (i < len - 1) fprintf( outfile, ", " );
779 }
780 fprintf( outfile, "\n};\n" );
781 }
782
783
784 /*******************************************************************
785 * BuildModule16
786 *
787 * Build the in-memory representation of a 16-bit NE module, and dump it
788 * as a byte stream into the assembly code.
789 */
790 static int BuildModule16( FILE *outfile, int max_code_offset,
791 int max_data_offset )
792 {
793 int i;
794 char *buffer;
795 NE_MODULE *pModule;
796 SEGTABLEENTRY *pSegment;
797 OFSTRUCT *pFileInfo;
798 BYTE *pstr;
799 WORD *pword;
800 ET_BUNDLE *bundle = 0;
801 ET_ENTRY *entry = 0;
802
803 /* Module layout:
804 * NE_MODULE Module
805 * OFSTRUCT File information
806 * SEGTABLEENTRY Segment 1 (code)
807 * SEGTABLEENTRY Segment 2 (data)
808 * WORD[2] Resource table (empty)
809 * BYTE[2] Imported names (empty)
810 * BYTE[n] Resident names table
811 * BYTE[n] Entry table
812 */
813
814 buffer = xmalloc( 0x10000 );
815
816 pModule = (NE_MODULE *)buffer;
817 memset( pModule, 0, sizeof(*pModule) );
818 pModule->magic = IMAGE_OS2_SIGNATURE;
819 pModule->count = 1;
820 pModule->next = 0;
821 pModule->flags = NE_FFLAGS_SINGLEDATA | NE_FFLAGS_BUILTIN | NE_FFLAGS_LIBMODULE;
822 pModule->dgroup = 2;
823 pModule->heap_size = DLLHeapSize;
824 pModule->stack_size = 0;
825 pModule->ip = 0;
826 pModule->cs = 0;
827 pModule->sp = 0;
828 pModule->ss = 0;
829 pModule->seg_count = 2;
830 pModule->modref_count = 0;
831 pModule->nrname_size = 0;
832 pModule->modref_table = 0;
833 pModule->nrname_fpos = 0;
834 pModule->moveable_entries = 0;
835 pModule->alignment = 0;
836 pModule->truetype = 0;
837 pModule->os_flags = NE_OSFLAGS_WINDOWS;
838 pModule->misc_flags = 0;
839 pModule->dlls_to_init = 0;
840 pModule->nrname_handle = 0;
841 pModule->min_swap_area = 0;
842 pModule->expected_version = 0;
843 pModule->module32 = 0;
844 pModule->self = 0;
845 pModule->self_loading_sel = 0;
846
847 /* File information */
848
849 pFileInfo = (OFSTRUCT *)(pModule + 1);
850 pModule->fileinfo = (int)pFileInfo - (int)pModule;
851 memset( pFileInfo, 0, sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) );
852 pFileInfo->cBytes = sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName)
853 + strlen(DLLFileName);
854 strcpy( pFileInfo->szPathName, DLLFileName );
855 pstr = (char *)pFileInfo + pFileInfo->cBytes + 1;
856
857 #ifdef __i386__ /* FIXME: Alignment problems! */
858
859 /* Segment table */
860
861 pSegment = (SEGTABLEENTRY *)pstr;
862 pModule->seg_table = (int)pSegment - (int)pModule;
863 pSegment->filepos = 0;
864 pSegment->size = max_code_offset;
865 pSegment->flags = 0;
866 pSegment->minsize = max_code_offset;
867 pSegment->hSeg = 0;
868 pSegment++;
869
870 pModule->dgroup_entry = (int)pSegment - (int)pModule;
871 pSegment->filepos = 0;
872 pSegment->size = max_data_offset;
873 pSegment->flags = NE_SEGFLAGS_DATA;
874 pSegment->minsize = max_data_offset;
875 pSegment->hSeg = 0;
876 pSegment++;
877
878 /* Resource table */
879
880 pword = (WORD *)pSegment;
881 pModule->res_table = (int)pword - (int)pModule;
882 *pword++ = 0;
883 *pword++ = 0;
884
885 /* Imported names table */
886
887 pstr = (char *)pword;
888 pModule->import_table = (int)pstr - (int)pModule;
889 *pstr++ = 0;
890 *pstr++ = 0;
891
892 /* Resident names table */
893
894 pModule->name_table = (int)pstr - (int)pModule;
895 /* First entry is module name */
896 *pstr = strlen(DLLName );
897 strcpy( pstr + 1, DLLName );
898 pstr += *pstr + 1;
899 *(WORD *)pstr = 0;
900 pstr += sizeof(WORD);
901 /* Store all ordinals */
902 for (i = 1; i <= Limit; i++)
903 {
904 ORDDEF *odp = Ordinals[i];
905 if (!odp || !odp->name[0]) continue;
906 *pstr = strlen( odp->name );
907 strcpy( pstr + 1, odp->name );
908 strupper( pstr + 1 );
909 pstr += *pstr + 1;
910 *(WORD *)pstr = i;
911 pstr += sizeof(WORD);
912 }
913 *pstr++ = 0;
914
915 /* Entry table */
916
917 pModule->entry_table = (int)pstr - (int)pModule;
918 for (i = 1; i <= Limit; i++)
919 {
920 int selector = 0;
921 ORDDEF *odp = Ordinals[i];
922 if (!odp) continue;
923
924 switch (odp->type)
925 {
926 case TYPE_CDECL:
927 case TYPE_PASCAL:
928 case TYPE_PASCAL_16:
929 case TYPE_REGISTER:
930 case TYPE_INTERRUPT:
931 case TYPE_STUB:
932 selector = 1; /* Code selector */
933 break;
934
935 case TYPE_BYTE:
936 case TYPE_WORD:
937 case TYPE_LONG:
938 selector = 2; /* Data selector */
939 break;
940
941 case TYPE_ABS:
942 selector = 0xfe; /* Constant selector */
943 break;
944
945 default:
946 selector = 0; /* Invalid selector */
947 break;
948 }
949
950 if ( !selector )
951 continue;
952
953 if ( bundle && bundle->last+1 == i )
954 bundle->last++;
955 else
956 {
957 if ( bundle )
958 bundle->next = (char *)pstr - (char *)pModule;
959
960 bundle = (ET_BUNDLE *)pstr;
961 bundle->first = i-1;
962 bundle->last = i;
963 bundle->next = 0;
964 pstr += sizeof(ET_BUNDLE);
965 }
966
967 /* FIXME: is this really correct ?? */
968 entry = (ET_ENTRY *)pstr;
969 entry->type = 0xff; /* movable */
970 entry->flags = 3; /* exported & public data */
971 entry->segnum = selector;
972 entry->offs = odp->offset;
973 pstr += sizeof(ET_ENTRY);
974 }
975 *pstr++ = 0;
976 #endif
977
978 /* Dump the module content */
979
980 DumpBytes( outfile, (char *)pModule, (int)pstr - (int)pModule,
981 "Module" );
982 return (int)pstr - (int)pModule;
983 }
984
985
986 /*******************************************************************
987 * BuildSpec32File
988 *
989 * Build a Win32 C file from a spec file.
990 */
991 static int BuildSpec32File( FILE *outfile )
992 {
993 ORDDEF *odp;
994 int i, fwd_size = 0, have_regs = FALSE;
995
996 AssignOrdinals();
997
998 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
999 input_file_name );
1000 fprintf( outfile, "#include \"builtin32.h\"\n\n" );
1001 fprintf( outfile, "extern const BUILTIN32_DESCRIPTOR %s_Descriptor;\n",
1002 DLLName );
1003
1004 /* Output the DLL functions prototypes */
1005
1006 for (i = 0, odp = EntryPoints; i < nb_entry_points; i++, odp++)
1007 {
1008 switch(odp->type)
1009 {
1010 case TYPE_EXTERN:
1011 fprintf( outfile, "extern void %s();\n", odp->u.ext.link_name );
1012 break;
1013 case TYPE_STDCALL:
1014 case TYPE_VARARGS:
1015 case TYPE_CDECL:
1016 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1017 break;
1018 case TYPE_FORWARD:
1019 fwd_size += strlen(odp->u.fwd.link_name) + 1;
1020 break;
1021 case TYPE_REGISTER:
1022 fprintf( outfile, "extern void __regs_%d();\n", odp->ordinal );
1023 have_regs = TRUE;
1024 break;
1025 case TYPE_STUB:
1026 fprintf( outfile, "static void __stub_%d() { BUILTIN32_Unimplemented(&%s_Descriptor,%d); }\n",
1027 odp->ordinal, DLLName, odp->ordinal );
1028 break;
1029 default:
1030 fprintf(stderr,"build: function type %d not available for Win32\n",
1031 odp->type);
1032 return -1;
1033 }
1034 }
1035
1036 /* Output LibMain function */
1037 if (DLLInitFunc[0]) fprintf( outfile, "extern void %s();\n", DLLInitFunc );
1038
1039
1040 /* Output code for all register functions */
1041
1042 if ( have_regs )
1043 {
1044 fprintf( outfile, "#ifndef __GNUC__\n" );
1045 fprintf( outfile, "static void __asm__dummy() {\n" );
1046 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1047 for (i = 0, odp = EntryPoints; i < nb_entry_points; i++, odp++)
1048 {
1049 if (odp->type != TYPE_REGISTER) continue;
1050 fprintf( outfile,
1051 "__asm__(\".align 4\\n\\t\"\n"
1052 " \".type " PREFIX "__regs_%d,@function\\n\\t\"\n"
1053 " \"" PREFIX "__regs_%d:\\n\\t\"\n"
1054 " \"call " PREFIX "CALL32_Regs\\n\\t\"\n"
1055 " \".long " PREFIX "%s\\n\\t\"\n"
1056 " \".byte %d,%d\");\n",
1057 odp->ordinal, odp->ordinal, odp->u.func.link_name,
1058 4 * strlen(odp->u.func.arg_types),
1059 4 * strlen(odp->u.func.arg_types) );
1060 }
1061 fprintf( outfile, "#ifndef __GNUC__\n" );
1062 fprintf( outfile, "}\n" );
1063 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1064 }
1065
1066 /* Output the DLL functions table */
1067
1068 fprintf( outfile, "\nstatic const ENTRYPOINT32 Functions[%d] =\n{\n",
1069 Limit - Base + 1 );
1070 for (i = Base; i <= Limit; i++)
1071 {
1072 ORDDEF *odp = Ordinals[i];
1073 if (!odp) fprintf( outfile, " 0" );
1074 else switch(odp->type)
1075 {
1076 case TYPE_EXTERN:
1077 fprintf( outfile, " %s", odp->u.ext.link_name );
1078 break;
1079 case TYPE_STDCALL:
1080 case TYPE_VARARGS:
1081 case TYPE_CDECL:
1082 fprintf( outfile, " %s", odp->u.func.link_name);
1083 break;
1084 case TYPE_STUB:
1085 fprintf( outfile, " __stub_%d", i );
1086 break;
1087 case TYPE_REGISTER:
1088 fprintf( outfile, " __regs_%d", i );
1089 break;
1090 case TYPE_FORWARD:
1091 fprintf( outfile, " (ENTRYPOINT32)\"%s\"", odp->u.fwd.link_name );
1092 break;
1093 default:
1094 return -1;
1095 }
1096 if (i < Limit) fprintf( outfile, ",\n" );
1097 }
1098 fprintf( outfile, "\n};\n\n" );
1099
1100 /* Output the DLL names table */
1101
1102 fprintf( outfile, "static const char * const FuncNames[%d] =\n{\n", nb_names );
1103 for (i = 0; i < nb_names; i++)
1104 {
1105 if (i) fprintf( outfile, ",\n" );
1106 fprintf( outfile, " \"%s\"", Names[i]->name );
1107 }
1108 fprintf( outfile, "\n};\n\n" );
1109
1110 /* Output the DLL ordinals table */
1111
1112 fprintf( outfile, "static const unsigned short FuncOrdinals[%d] =\n{\n", nb_names );
1113 for (i = 0; i < nb_names; i++)
1114 {
1115 if (i) fprintf( outfile, ",\n" );
1116 fprintf( outfile, " %d", Names[i]->ordinal - Base );
1117 }
1118 fprintf( outfile, "\n};\n\n" );
1119
1120 /* Output the DLL argument types */
1121
1122 fprintf( outfile, "static const unsigned int ArgTypes[%d] =\n{\n",
1123 Limit - Base + 1 );
1124 for (i = Base; i <= Limit; i++)
1125 {
1126 ORDDEF *odp = Ordinals[i];
1127 unsigned int j, mask = 0;
1128 if (odp &&
1129 ((odp->type == TYPE_STDCALL) || (odp->type == TYPE_CDECL) ||
1130 (odp->type == TYPE_REGISTER)))
1131 for (j = 0; odp->u.func.arg_types[j]; j++)
1132 {
1133 if (odp->u.func.arg_types[j] == 't') mask |= 1<< (j*2);
1134 if (odp->u.func.arg_types[j] == 'W') mask |= 2<< (j*2);
1135 }
1136 fprintf( outfile, " %d", mask );
1137 if (i < Limit) fprintf( outfile, ",\n" );
1138 }
1139 fprintf( outfile, "\n};\n\n" );
1140
1141 /* Output the DLL functions arguments */
1142
1143 fprintf( outfile, "static const unsigned char FuncArgs[%d] =\n{\n",
1144 Limit - Base + 1 );
1145 for (i = Base; i <= Limit; i++)
1146 {
1147 unsigned char args = 0xff;
1148 ORDDEF *odp = Ordinals[i];
1149 if (odp) switch(odp->type)
1150 {
1151 case TYPE_STDCALL:
1152 args = (unsigned char)strlen(odp->u.func.arg_types);
1153 break;
1154 case TYPE_CDECL:
1155 args = 0x80 | (unsigned char)strlen(odp->u.func.arg_types);
1156 break;
1157 case TYPE_REGISTER:
1158 args = 0x40 | (unsigned char)strlen(odp->u.func.arg_types);
1159 break;
1160 case TYPE_FORWARD:
1161 args = 0xfd;
1162 break;
1163 default:
1164 args = 0xff;
1165 break;
1166 }
1167 fprintf( outfile, " 0x%02x", args );
1168 if (i < Limit) fprintf( outfile, ",\n" );
1169 }
1170 fprintf( outfile, "\n};\n\n" );
1171
1172 /* Output the DLL imports */
1173
1174 if (nb_imports)
1175 {
1176 fprintf( outfile, "static const char * const Imports[%d] =\n{\n", nb_imports );
1177 for (i = 0; i < nb_imports; i++)
1178 {
1179 fprintf( outfile, " \"%s\"", DLLImports[i] );
1180 if (i < nb_imports-1) fprintf( outfile, ",\n" );
1181 }
1182 fprintf( outfile, "\n};\n\n" );
1183 }
1184
1185 /* Output the DLL descriptor */
1186
1187 fprintf( outfile, "const BUILTIN32_DESCRIPTOR %s_Descriptor =\n{\n",
1188 DLLName );
1189 fprintf( outfile, " \"%s\",\n", DLLName );
1190 fprintf( outfile, " \"%s\",\n", DLLFileName );
1191 fprintf( outfile, " %d,\n", Base );
1192 fprintf( outfile, " %d,\n", Limit - Base + 1 );
1193 fprintf( outfile, " %d,\n", nb_names );
1194 fprintf( outfile, " %d,\n", nb_imports );
1195 fprintf( outfile, " %d,\n", (fwd_size + 3) & ~3 );
1196 fprintf( outfile,
1197 " Functions,\n"
1198 " FuncNames,\n"
1199 " FuncOrdinals,\n"
1200 " FuncArgs,\n"
1201 " ArgTypes,\n");
1202 fprintf( outfile, " %s,\n", nb_imports ? "Imports" : "0" );
1203 fprintf( outfile, " %s\n", DLLInitFunc[0] ? DLLInitFunc : "0" );
1204 fprintf( outfile, "};\n" );
1205 return 0;
1206 }
1207
1208 /*******************************************************************
1209 * Spec16TypeCompare
1210 */
1211 static int Spec16TypeCompare( const void *e1, const void *e2 )
1212 {
1213 const ORDDEF *odp1 = *(const ORDDEF **)e1;
1214 const ORDDEF *odp2 = *(const ORDDEF **)e2;
1215
1216 int type1 = (odp1->type == TYPE_CDECL) ? 0
1217 : (odp1->type == TYPE_REGISTER) ? 3
1218 : (odp1->type == TYPE_INTERRUPT) ? 4
1219 : (odp1->type == TYPE_PASCAL_16) ? 1 : 2;
1220
1221 int type2 = (odp2->type == TYPE_CDECL) ? 0
1222 : (odp2->type == TYPE_REGISTER) ? 3
1223 : (odp2->type == TYPE_INTERRUPT) ? 4
1224 : (odp2->type == TYPE_PASCAL_16) ? 1 : 2;
1225
1226 int retval = type1 - type2;
1227 if ( !retval )
1228 retval = strcmp( odp1->u.func.arg_types, odp2->u.func.arg_types );
1229
1230 return retval;
1231 }
1232
1233 /*******************************************************************
1234 * BuildSpec16File
1235 *
1236 * Build a Win16 assembly file from a spec file.
1237 */
1238 static int BuildSpec16File( FILE *outfile )
1239 {
1240 ORDDEF **type, **typelist;
1241 int i, nFuncs, nTypes;
1242 int code_offset, data_offset, module_size;
1243 unsigned char *data;
1244
1245 /* File header */
1246
1247 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1248 input_file_name );
1249 fprintf( outfile, "#define __FLATCS__ 0x%04x\n", Code_Selector );
1250 fprintf( outfile, "#include \"builtin16.h\"\n\n" );
1251
1252 data = (unsigned char *)xmalloc( 0x10000 );
1253 memset( data, 0, 16 );
1254 data_offset = 16;
1255
1256
1257 /* Build sorted list of all argument types, without duplicates */
1258
1259 typelist = (ORDDEF **)calloc( Limit+1, sizeof(ORDDEF *) );
1260
1261 for (i = nFuncs = 0; i <= Limit; i++)
1262 {
1263 ORDDEF *odp = Ordinals[i];
1264 if (!odp) continue;
1265 switch (odp->type)
1266 {
1267 case TYPE_REGISTER:
1268 case TYPE_INTERRUPT:
1269 case TYPE_CDECL:
1270 case TYPE_PASCAL:
1271 case TYPE_PASCAL_16:
1272 case TYPE_STUB:
1273 typelist[nFuncs++] = odp;
1274
1275 default:
1276 break;
1277 }
1278 }
1279
1280 qsort( typelist, nFuncs, sizeof(ORDDEF *), Spec16TypeCompare );
1281
1282 i = nTypes = 0;
1283 while ( i < nFuncs )
1284 {
1285 typelist[nTypes++] = typelist[i++];
1286 while ( i < nFuncs && Spec16TypeCompare( typelist + i, typelist + nTypes-1 ) == 0 )
1287 i++;
1288 }
1289
1290 /* Output CallFrom16 routines needed by this .spec file */
1291
1292 for ( i = 0; i < nTypes; i++ )
1293 {
1294 char profile[101];
1295
1296 sprintf( profile, "%s_%s_%s",
1297 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1298 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1299 (typelist[i]->type == TYPE_INTERRUPT) ? "intr" :
1300 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1301 typelist[i]->u.func.arg_types );
1302
1303 BuildCallFrom16Func( outfile, profile, DLLName, TRUE );
1304 }
1305
1306 /* Output the DLL functions prototypes */
1307
1308 for (i = 0; i <= Limit; i++)
1309 {
1310 ORDDEF *odp = Ordinals[i];
1311 if (!odp) continue;
1312 switch(odp->type)
1313 {
1314 case TYPE_REGISTER:
1315 case TYPE_INTERRUPT:
1316 case TYPE_CDECL:
1317 case TYPE_PASCAL:
1318 case TYPE_PASCAL_16:
1319 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1320 break;
1321 default:
1322 break;
1323 }
1324 }
1325
1326 /* Output code segment */
1327
1328 fprintf( outfile, "\nstatic struct\n{\n CALLFROM16 call[%d];\n"
1329 " ENTRYPOINT16 entry[%d];\n} Code_Segment = \n{\n {\n",
1330 nTypes, nFuncs );
1331 code_offset = 0;
1332
1333 for ( i = 0; i < nTypes; i++ )
1334 {
1335 char profile[101], *arg;
1336 int argsize = 0;
1337
1338 sprintf( profile, "%s_%s_%s",
1339 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1340 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1341 (typelist[i]->type == TYPE_INTERRUPT) ? "intr" :
1342 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1343 typelist[i]->u.func.arg_types );
1344
1345 if ( typelist[i]->type != TYPE_CDECL )
1346 for ( arg = typelist[i]->u.func.arg_types; *arg; arg++ )
1347 switch ( *arg )
1348 {
1349 case 'w': /* word */
1350 case 's': /* s_word */
1351 argsize += 2;
1352 break;
1353
1354 case 'l': /* long or segmented pointer */
1355 case 'T': /* segmented pointer to null-terminated string */
1356 case 'p': /* linear pointer */
1357 case 't': /* linear pointer to null-terminated string */
1358 argsize += 4;
1359 break;
1360 }
1361
1362 if ( typelist[i]->type == TYPE_INTERRUPT )
1363 argsize += 2;
1364
1365 fprintf( outfile, " CF16_%s( %s_CallFrom16_%s, %d, \"%s\" ),\n",
1366 ( typelist[i]->type == TYPE_REGISTER
1367 || typelist[i]->type == TYPE_INTERRUPT)? "REGS":
1368 typelist[i]->type == TYPE_PASCAL_16? "WORD" : "LONG",
1369 DLLName, profile, argsize, profile );
1370
1371 code_offset += sizeof(CALLFROM16);
1372 }
1373 fprintf( outfile, " },\n {\n" );
1374
1375 for (i = 0; i <= Limit; i++)
1376 {
1377 ORDDEF *odp = Ordinals[i];
1378 if (!odp) continue;
1379 switch (odp->type)
1380 {
1381 case TYPE_ABS:
1382 odp->offset = LOWORD(odp->u.abs.value);
1383 break;
1384
1385 case TYPE_BYTE:
1386 odp->offset = data_offset;
1387 data_offset += StoreVariableCode( data + data_offset, 1, odp);
1388 break;
1389
1390 case TYPE_WORD:
1391 odp->offset = data_offset;
1392 data_offset += StoreVariableCode( data + data_offset, 2, odp);
1393 break;
1394
1395 case TYPE_LONG:
1396 odp->offset = data_offset;
1397 data_offset += StoreVariableCode( data + data_offset, 4, odp);
1398 break;
1399
1400 case TYPE_REGISTER:
1401 case TYPE_INTERRUPT:
1402 case TYPE_CDECL:
1403 case TYPE_PASCAL:
1404 case TYPE_PASCAL_16:
1405 case TYPE_STUB:
1406 type = bsearch( &odp, typelist, nTypes, sizeof(ORDDEF *), Spec16TypeCompare );
1407 assert( type );
1408
1409 fprintf( outfile, " /* %s.%d */ ", DLLName, i );
1410 fprintf( outfile, "EP( %s, %d /* %s_%s_%s */ ),\n",
1411 odp->u.func.link_name,
1412 (type-typelist)*sizeof(CALLFROM16) -
1413 (code_offset + sizeof(ENTRYPOINT16)),
1414 (odp->type == TYPE_CDECL) ? "c" : "p",
1415 (odp->type == TYPE_REGISTER) ? "regs" :
1416 (odp->type == TYPE_INTERRUPT) ? "intr" :
1417 (odp->type == TYPE_PASCAL_16) ? "word" : "long",
1418 odp->u.func.arg_types );
1419
1420 odp->offset = code_offset;
1421 code_offset += sizeof(ENTRYPOINT16);
1422 break;
1423
1424 default:
1425 fprintf(stderr,"build: function type %d not available for Win16\n",
1426 odp->type);
1427 return -1;
1428 }
1429 }
1430
1431 fprintf( outfile, " }\n};\n" );
1432
1433 /* Output data segment */
1434
1435 DumpBytes( outfile, data, data_offset, "Data_Segment" );
1436
1437 /* Build the module */
1438
1439 module_size = BuildModule16( outfile, code_offset, data_offset );
1440
1441 /* Output the DLL descriptor */
1442
1443 fprintf( outfile, "\nWIN16_DESCRIPTOR %s_Descriptor = \n{\n", DLLName );
1444 fprintf( outfile, " \"%s\",\n", DLLName );
1445 fprintf( outfile, " Module,\n" );
1446 fprintf( outfile, " sizeof(Module),\n" );
1447 fprintf( outfile, " (BYTE *)&Code_Segment,\n" );
1448 fprintf( outfile, " (BYTE *)Data_Segment\n" );
1449 fprintf( outfile, "};\n" );
1450
1451 return 0;
1452 }
1453
1454
1455 /*******************************************************************
1456 * BuildSpecFile
1457 *
1458 * Build an assembly file from a spec file.
1459 */
1460 static void BuildSpecFile( FILE *outfile, FILE *infile )
1461 {
1462 SpecFp = infile;
1463 ParseTopLevel();
1464
1465 switch(SpecType)
1466 {
1467 case SPEC_WIN16:
1468 BuildSpec16File( outfile );
1469 break;
1470 case SPEC_WIN32:
1471 BuildSpec32File( outfile );
1472 break;
1473 default:
1474 fatal_error( "Missing 'type' declaration\n" );
1475 }
1476 }
1477
1478
1479 /*******************************************************************
1480 * BuildCallFrom16Func
1481 *
1482 * Build a 16-bit-to-Wine callback glue function.
1483 *
1484 * The generated routines are intended to be used as argument conversion
1485 * routines to be called by the CallFrom16... core. Thus, the prototypes of
1486 * the generated routines are (see also CallFrom16):
1487 *
1488 * extern WORD WINAPI PREFIX_CallFrom16_C_word_xxx( FARPROC func, LPBYTE args );
1489 * extern LONG WINAPI PREFIX_CallFrom16_C_long_xxx( FARPROC func, LPBYTE args );
1490 * extern void WINAPI PREFIX_CallFrom16_C_regs_xxx( FARPROC func, LPBYTE args,
1491 * CONTEXT86 *context );
1492 * extern void WINAPI PREFIX_CallFrom16_C_intr_xxx( FARPROC func, LPBYTE args,
1493 * CONTEXT86 *context );
1494 *
1495 * where 'C' is the calling convention ('p' for pascal or 'c' for cdecl),
1496 * and each 'x' is an argument ('w'=word, 's'=signed word, 'l'=long,
1497 * 'p'=linear pointer, 't'=linear pointer to null-terminated string,
1498 * 'T'=segmented pointer to null-terminated string).
1499 *
1500 * The generated routines fetch the arguments from the 16-bit stack (pointed
1501 * to by 'args'); the offsets of the single argument values are computed
1502 * according to the calling convention and the argument types. Then, the
1503 * 32-bit entry point is called with these arguments.
1504 *
1505 * For register functions, the arguments (if present) are converted just
1506 * the same as for normal functions, but in addition the CONTEXT86 pointer
1507 * filled with the current register values is passed to the 32-bit routine.
1508 * (An 'intr' interrupt handler routine is treated exactly like a register
1509 * routine, except that upon return, the flags word pushed onto the stack
1510 * by the interrupt is removed by the 16-bit call stub.)
1511 *
1512 */
1513 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local )
1514 {
1515 int i, pos, argsize = 0;
1516 int short_ret = 0;
1517 int reg_func = 0;
1518 int usecdecl = 0;
1519 char *args = profile + 7;
1520 char *ret_type;
1521
1522 /* Parse function type */
1523
1524 if (!strncmp( "c_", profile, 2 )) usecdecl = 1;
1525 else if (strncmp( "p_", profile, 2 ))
1526 {
1527 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1528 return;
1529 }
1530
1531 if (!strncmp( "word_", profile + 2, 5 )) short_ret = 1;
1532 else if (!strncmp( "regs_", profile + 2, 5 )) reg_func = 1;
1533 else if (!strncmp( "intr_", profile + 2, 5 )) reg_func = 2;
1534 else if (strncmp( "long_", profile + 2, 5 ))
1535 {
1536 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1537 return;
1538 }
1539
1540 for ( i = 0; args[i]; i++ )
1541 switch ( args[i] )
1542 {
1543 case 'w': /* word */
1544 case 's': /* s_word */
1545 argsize += 2;
1546 break;
1547
1548 case 'l': /* long or segmented pointer */
1549 case 'T': /* segmented pointer to null-terminated string */
1550 case 'p': /* linear pointer */
1551 case 't': /* linear pointer to null-terminated string */
1552 argsize += 4;
1553 break;
1554 }
1555
1556 ret_type = reg_func? "void" : short_ret? "WORD" : "LONG";
1557
1558 fprintf( outfile, "typedef %s WINAPI (*proc_%s_t)( ",
1559 ret_type, profile );
1560 args = profile + 7;
1561 for ( i = 0; args[i]; i++ )
1562 {
1563 if ( i ) fprintf( outfile, ", " );
1564 switch (args[i])
1565 {
1566 case 'w': fprintf( outfile, "WORD" ); break;
1567 case 's': fprintf( outfile, "INT16" ); break;
1568 case 'l': case 'T': fprintf( outfile, "LONG" ); break;
1569 case 'p': case 't': fprintf( outfile, "LPVOID" ); break;
1570 }
1571 }
1572 if ( reg_func )
1573 fprintf( outfile, "%sstruct _CONTEXT86 *", i? ", " : "" );
1574 else if ( !i )
1575 fprintf( outfile, "void" );
1576 fprintf( outfile, " );\n" );
1577
1578 fprintf( outfile, "%s%s WINAPI %s_CallFrom16_%s( FARPROC proc, LPBYTE args%s )\n{\n",
1579 local? "static " : "", ret_type, prefix, profile,
1580 reg_func? ", struct _CONTEXT86 *context" : "" );
1581
1582 fprintf( outfile, " %s((proc_%s_t) proc) (\n",
1583 reg_func? "" : "return ", profile );
1584 args = profile + 7;
1585 pos = !usecdecl? argsize : 0;
1586 for ( i = 0; args[i]; i++ )
1587 {
1588 if ( i ) fprintf( outfile, ",\n" );
1589 fprintf( outfile, " " );
1590 switch (args[i])
1591 {
1592 case 'w': /* word */
1593 if ( !usecdecl ) pos -= 2;
1594 fprintf( outfile, "*(WORD *)(args+%d)", pos );
1595 if ( usecdecl ) pos += 2;
1596 break;
1597
1598 case 's': /* s_word */
1599 if ( !usecdecl ) pos -= 2;
1600 fprintf( outfile, "*(INT16 *)(args+%d)", pos );
1601 if ( usecdecl ) pos += 2;
1602 break;
1603
1604 case 'l': /* long or segmented pointer */
1605 case 'T': /* segmented pointer to null-terminated string */
1606 if ( !usecdecl ) pos -= 4;
1607 fprintf( outfile, "*(LONG *)(args+%d)", pos );
1608 if ( usecdecl ) pos += 4;
1609 break;
1610
1611 case 'p': /* linear pointer */
1612 case 't': /* linear pointer to null-terminated string */
1613 if ( !usecdecl ) pos -= 4;
1614 fprintf( outfile, "PTR_SEG_TO_LIN( *(SEGPTR *)(args+%d) )", pos );
1615 if ( usecdecl ) pos += 4;
1616 break;
1617
1618 default:
1619 fprintf( stderr, "Unknown arg type '%c'\n", args[i] );
1620 }
1621 }
1622 if ( reg_func )
1623 fprintf( outfile, "%s context", i? ",\n" : "" );
1624 fprintf( outfile, " );\n}\n\n" );
1625 }
1626
1627 /*******************************************************************
1628 * BuildCallTo16Func
1629 *
1630 * Build a Wine-to-16-bit callback glue function.
1631 *
1632 * Prototypes for the CallTo16 functions:
1633 * extern WORD CALLBACK PREFIX_CallTo16_word_xxx( FARPROC16 func, args... );
1634 * extern LONG CALLBACK PREFIX_CallTo16_long_xxx( FARPROC16 func, args... );
1635 *
1636 * These routines are provided solely for convenience; they simply
1637 * write the arguments onto the 16-bit stack, and call the appropriate
1638 * CallTo16... core routine.
1639 *
1640 * If you have more sophisticated argument conversion requirements than
1641 * are provided by these routines, you might as well call the core
1642 * routines by yourself.
1643 *
1644 */
1645 static void BuildCallTo16Func( FILE *outfile, char *profile, char *prefix )
1646 {
1647 char *args = profile + 5;
1648 int i, argsize = 0, short_ret = 0;
1649
1650 if (!strncmp( "word_", profile, 5 )) short_ret = 1;
1651 else if (strncmp( "long_", profile, 5 ))
1652 {
1653 fprintf( stderr, "Invalid function name '%s'.\n", profile );
1654 exit(1);
1655 }
1656
1657 fprintf( outfile, "%s %s_CallTo16_%s( FARPROC16 proc",
1658 short_ret? "WORD" : "LONG", prefix, profile );
1659 args = profile + 5;
1660 for ( i = 0; args[i]; i++ )
1661 {
1662 fprintf( outfile, ", " );
1663 switch (args[i])
1664 {
1665 case 'w': fprintf( outfile, "WORD" ); argsize += 2; break;
1666 case 'l': fprintf( outfile, "LONG" ); argsize += 4; break;
1667 }
1668 fprintf( outfile, " arg%d", i+1 );
1669 }
1670 fprintf( outfile, " )\n{\n" );
1671
1672 if ( argsize > 0 )
1673 fprintf( outfile, " LPBYTE args = (LPBYTE)CURRENT_STACK16;\n" );
1674
1675 args = profile + 5;
1676 for ( i = 0; args[i]; i++ )
1677 {
1678 switch (args[i])
1679 {
1680 case 'w': fprintf( outfile, " args -= sizeof(WORD); *(WORD" ); break;
1681 case 'l': fprintf( outfile, " args -= sizeof(LONG); *(LONG" ); break;
1682 default: fprintf( stderr, "Unexpected case '%c' in BuildCallTo16Func\n",
1683 args[i] );
1684 }
1685 fprintf( outfile, " *)args = arg%d;\n", i+1 );
1686 }
1687
1688 fprintf( outfile, " return CallTo16%s( proc, %d );\n}\n\n",
1689 short_ret? "Word" : "Long", argsize );
1690 }
1691
1692
1693
1694 /*******************************************************************
1695 * BuildCallFrom16Core
1696 *
1697 * This routine builds the core routines used in 16->32 thunks:
1698 * CallFrom16Word, CallFrom16Long, CallFrom16Register, and CallFrom16Thunk.
1699 *
1700 * These routines are intended to be called via a far call (with 32-bit
1701 * operand size) from 16-bit code. The 16-bit code stub must push %bp,
1702 * the 32-bit entry point to be called, and the argument conversion
1703 * routine to be used (see stack layout below).
1704 *
1705 * The core routine completes the STACK16FRAME on the 16-bit stack and
1706 * switches to the 32-bit stack. Then, the argument conversion routine
1707 * is called; it gets passed the 32-bit entry point and a pointer to the
1708 * 16-bit arguments (on the 16-bit stack) as parameters. (You can either
1709 * use conversion routines automatically generated by BuildCallFrom16,
1710 * or write your own for special purposes.)
1711 *
1712 * The conversion routine must call the 32-bit entry point, passing it
1713 * the converted arguments, and return its return value to the core.
1714 * After the conversion routine has returned, the core switches back
1715 * to the 16-bit stack, converts the return value to the DX:AX format
1716 * (CallFrom16Long), and returns to the 16-bit call stub. All parameters,
1717 * including %bp, are popped off the stack.
1718 *
1719 * The 16-bit call stub now returns to the caller, popping the 16-bit
1720 * arguments if necessary (pascal calling convention).
1721 *
1722 * In the case of a 'register' function, CallFrom16Register fills a
1723 * CONTEXT86 structure with the values all registers had at the point
1724 * the first instruction of the 16-bit call stub was about to be
1725 * executed. A pointer to this CONTEXT86 is passed as third parameter
1726 * to the argument conversion routine, which typically passes it on
1727 * to the called 32-bit entry point.
1728 *
1729 * CallFrom16Thunk is a special variant used by the implementation of
1730 * the Win95 16->32 thunk functions C16ThkSL and C16ThkSL01 and is
1731 * implemented as follows:
1732 * On entry, the EBX register is set up to contain a flat pointer to the
1733 * 16-bit stack such that EBX+22 points to the first argument.
1734 * Then, the entry point is called, while EBP is set up to point
1735 * to the return address (on the 32-bit stack).
1736 * The called function returns with CX set to the number of bytes
1737 * to be popped of the caller's stack.
1738 *
1739 * Stack layout upon entry to the core routine (STACK16FRAME):
1740 * ... ...
1741 * (sp+24) word first 16-bit arg
1742 * (sp+22) word cs
1743 * (sp+20) word ip
1744 * (sp+18) word bp
1745 * (sp+14) long 32-bit entry point (reused for Win16 mutex recursion count)
1746 * (sp+12) word ip of actual entry point (necessary for relay debugging)
1747 * (sp+8) long relay (argument conversion) function entry point
1748 * (sp+4) long cs of 16-bit entry point
1749 * (sp) long ip of 16-bit entry point
1750 *
1751 * Added on the stack:
1752 * (sp-2) word saved gs
1753 * (sp-4) word saved fs
1754 * (sp-6) word saved es
1755 * (sp-8) word saved ds
1756 * (sp-12) long saved ebp
1757 * (sp-16) long saved ecx
1758 * (sp-20) long saved edx
1759 * (sp-24) long saved previous stack
1760 */
1761 static void BuildCallFrom16Core( FILE *outfile, int reg_func, int thunk, int short_ret )
1762 {
1763 char *name = thunk? "Thunk" : reg_func? "Register" : short_ret? "Word" : "Long";
1764
1765 /* Function header */
1766 fprintf( outfile, "\n\t.align 4\n" );
1767 #ifdef USE_STABS
1768 fprintf( outfile, ".stabs \"CallFrom16%s:F1\",36,0,0," PREFIX "CallFrom16%s\n",
1769 name, name);
1770 #endif
1771 fprintf( outfile, "\t.globl " PREFIX "CallFrom16%s\n", name );
1772 fprintf( outfile, PREFIX "CallFrom16%s:\n", name );
1773
1774 /* Create STACK16FRAME (except STACK32FRAME link) */
1775 fprintf( outfile, "\tpushw %%gs\n" );
1776 fprintf( outfile, "\tpushw %%fs\n" );
1777 fprintf( outfile, "\tpushw %%es\n" );
1778 fprintf( outfile, "\tpushw %%ds\n" );
1779 fprintf( outfile, "\tpushl %%ebp\n" );
1780 fprintf( outfile, "\tpushl %%ecx\n" );
1781 fprintf( outfile, "\tpushl %%edx\n" );
1782
1783 /* Save original EFlags register */
1784 fprintf( outfile, "\tpushfl\n" );
1785
1786 if ( UsePIC )
1787 {
1788 /* Get Global Offset Table into %ecx */
1789 fprintf( outfile, "\tcall .LCallFrom16%s.getgot1\n", name );
1790 fprintf( outfile, ".LCallFrom16%s.getgot1:\n", name );
1791 fprintf( outfile, "\tpopl %%ecx\n" );
1792 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot1], %%ecx\n", name );
1793 }
1794
1795 /* Load 32-bit segment registers */
1796 fprintf( outfile, "\tmovw $0x%04x, %%dx\n", Data_Selector );
1797 #ifdef __svr4__
1798 fprintf( outfile, "\tdata16\n");
1799 #endif
1800 fprintf( outfile, "\tmovw %%dx, %%ds\n" );
1801 #ifdef __svr4__
1802 fprintf( outfile, "\tdata16\n");
1803 #endif
1804 fprintf( outfile, "\tmovw %%dx, %%es\n" );
1805
1806 if ( UsePIC )
1807 {
1808 fprintf( outfile, "\tmovl " PREFIX "SYSLEVEL_Win16CurrentTeb@GOT(%%ecx), %%edx\n" );
1809 fprintf( outfile, "\tmovw (%%edx), %%fs\n" );
1810 }
1811 else
1812 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb, %%fs\n" );
1813
1814 /* Get address of ldt_copy array into %ecx */
1815 if ( UsePIC )
1816 fprintf( outfile, "\tmovl " PREFIX "ldt_copy@GOT(%%ecx), %%ecx\n" );
1817 else
1818 fprintf( outfile, "\tmovl $" PREFIX "ldt_copy, %%ecx\n" );
1819
1820 /* Translate STACK16FRAME base to flat offset in %edx */
1821 fprintf( outfile, "\tmovw %%ss, %%dx\n" );
1822 fprintf( outfile, "\tandl $0xfff8, %%edx\n" );
1823 fprintf( outfile, "\tmovl (%%ecx,%%edx), %%edx\n" );
1824 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
1825 fprintf( outfile, "\tleal (%%ebp,%%edx), %%edx\n" );
1826
1827 /* Get saved flags into %ecx */
1828 fprintf( outfile, "\tpopl %%ecx\n" );
1829
1830 /* Get the 32-bit stack pointer from the TEB and complete STACK16FRAME */
1831 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d), %%ebp\n", STACKOFFSET );
1832 fprintf( outfile, "\tpushl %%ebp\n" );
1833
1834 /* Switch stacks */
1835 #ifdef __svr4__
1836 fprintf( outfile,"\tdata16\n");
1837 #endif
1838 fprintf( outfile, "\t.byte 0x64\n\tmovw %%ss, (%d)\n", STACKOFFSET + 2 );
1839 fprintf( outfile, "\t.byte 0x64\n\tmovw %%sp, (%d)\n", STACKOFFSET );
1840 fprintf( outfile, "\tpushl %%ds\n" );
1841 fprintf( outfile, "\tpopl %%ss\n" );
1842 fprintf( outfile, "\tmovl %%ebp, %%esp\n" );
1843 fprintf( outfile, "\taddl $%d, %%ebp\n", STRUCTOFFSET(STACK32FRAME, ebp) );
1844
1845
1846 /* At this point:
1847 STACK16FRAME is completely set up
1848 DS, ES, SS: flat data segment
1849 FS: current TEB
1850 ESP: points to last STACK32FRAME
1851 EBP: points to ebp member of last STACK32FRAME
1852 EDX: points to current STACK16FRAME
1853 ECX: contains saved flags
1854 all other registers: unchanged */
1855
1856 /* Special case: C16ThkSL stub */
1857 if ( thunk )
1858 {
1859 /* Set up registers as expected and call thunk */
1860 fprintf( outfile, "\tleal %d(%%edx), %%ebx\n", sizeof(STACK16FRAME)-22 );
1861 fprintf( outfile, "\tleal -4(%%esp), %%ebp\n" );
1862
1863 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(entry_point) );
1864
1865 /* Switch stack back */
1866 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
1867 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
1868 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
1869
1870 /* Restore registers and return directly to caller */
1871 fprintf( outfile, "\taddl $8, %%esp\n" );
1872 fprintf( outfile, "\tpopl %%ebp\n" );
1873 fprintf( outfile, "\tpopw %%ds\n" );
1874 fprintf( outfile, "\tpopw %%es\n" );
1875 fprintf( outfile, "\tpopw %%fs\n" );
1876 fprintf( outfile, "\tpopw %%gs\n" );
1877 fprintf( outfile, "\taddl $20, %%esp\n" );
1878
1879 fprintf( outfile, "\txorb %%ch, %%ch\n" );
1880 fprintf( outfile, "\tpopl %%ebx\n" );
1881 fprintf( outfile, "\taddw %%cx, %%sp\n" );
1882 fprintf( outfile, "\tpush %%ebx\n" );
1883
1884 fprintf( outfile, "\t.byte 0x66\n" );
1885 fprintf( outfile, "\tlret\n" );
1886
1887 return;
1888 }
1889
1890
1891 /* Build register CONTEXT */
1892 if ( reg_func )
1893 {
1894 fprintf( outfile, "\tsubl $%d, %%esp\n", sizeof(CONTEXT86) );
1895
1896 fprintf( outfile, "\tmovl %%ecx, %d(%%esp)\n", CONTEXTOFFSET(EFlags) );
1897
1898 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eax) );
1899 fprintf( outfile, "\tmovl %%ebx, %d(%%esp)\n", CONTEXTOFFSET(Ebx) );
1900 fprintf( outfile, "\tmovl %%esi, %d(%%esp)\n", CONTEXTOFFSET(Esi) );
1901 fprintf( outfile, "\tmovl %%edi, %d(%%esp)\n", CONTEXTOFFSET(Edi) );
1902
1903 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ebp) );
1904 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ebp) );
1905 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ecx) );
1906 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ecx) );
1907 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(edx) );
1908 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Edx) );
1909
1910 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ds) );
1911 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegDs) );
1912 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(es) );
1913 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegEs) );
1914 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(fs) );
1915 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegFs) );
1916 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(gs) );
1917 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegGs) );
1918
1919 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(cs) );
1920 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegCs) );
1921 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ip) );
1922 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eip) );
1923
1924 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET+2 );
1925 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegSs) );
1926 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET );
1927 fprintf( outfile, "\taddl $%d, %%eax\n", STACK16OFFSET(ip) );
1928 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Esp) );
1929 #if 0
1930 fprintf( outfile, "\tfsave %d(%%esp)\n", CONTEXTOFFSET(FloatSave) );
1931 #endif
1932
1933 /* Push address of CONTEXT86 structure -- popped by the relay routine */
1934 fprintf( outfile, "\tpushl %%esp\n" );
1935 }
1936
1937
1938 /* Print debug info before call */
1939 if ( debugging )
1940 {
1941 if ( UsePIC )
1942 {
1943 fprintf( outfile, "\tpushl %%ebx\n" );
1944
1945 /* Get Global Offset Table into %ebx (for PLT call) */
1946 fprintf( outfile, "\tcall .LCallFrom16%s.getgot2\n", name );
1947 fprintf( outfile, ".LCallFrom16%s.getgot2:\n", name );
1948 fprintf( outfile, "\tpopl %%ebx\n" );
1949 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot2], %%ebx\n", name );
1950 }
1951
1952 fprintf( outfile, "\tpushl %%edx\n" );
1953 if ( reg_func )
1954 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
1955 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
1956 else
1957 fprintf( outfile, "\tpushl $0\n" );
1958
1959 if ( UsePIC )
1960 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16@PLT\n ");
1961 else
1962 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16\n ");
1963
1964 fprintf( outfile, "\tpopl %%edx\n" );
1965 fprintf( outfile, "\tpopl %%edx\n" );
1966
1967 if ( UsePIC )
1968 fprintf( outfile, "\tpopl %%ebx\n" );
1969 }
1970
1971 /* Call relay routine (which will call the API entry point) */
1972 fprintf( outfile, "\tleal %d(%%edx), %%eax\n", sizeof(STACK16FRAME) );
1973 fprintf( outfile, "\tpushl %%eax\n" );
1974 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK16OFFSET(entry_point) );
1975 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(relay) );
1976
1977 /* Print debug info after call */
1978 if ( debugging )
1979 {
1980 if ( UsePIC )
1981 {
1982 fprintf( outfile, "\tpushl %%ebx\n" );
1983
1984 /* Get Global Offset Table into %ebx (for PLT call) */
1985 fprintf( outfile, "\tcall .LCallFrom16%s.getgot3\n", name );
1986 fprintf( outfile, ".LCallFrom16%s.getgot3:\n", name );
1987 fprintf( outfile, "\tpopl %%ebx\n" );
1988 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot3], %%ebx\n", name );
1989 }
1990
1991 fprintf( outfile, "\tpushl %%eax\n" );
1992 if ( reg_func )
1993 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
1994 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
1995 else
1996 fprintf( outfile, "\tpushl $0\n" );
1997
1998 if ( UsePIC )
1999 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret@PLT\n ");
2000 else
2001 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret\n ");
2002
2003 fprintf( outfile, "\tpopl %%eax\n" );
2004 fprintf( outfile, "\tpopl %%eax\n" );
2005
2006 if ( UsePIC )
2007 fprintf( outfile, "\tpopl %%ebx\n" );
2008 }
2009
2010
2011 if ( reg_func )
2012 {
2013 fprintf( outfile, "\tmovl %%esp, %%ebx\n" );
2014
2015 /* Switch stack back */
2016 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2017 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2018 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2019
2020 /* Get return address to CallFrom16 stub */
2021 fprintf( outfile, "\taddw $%d, %%sp\n", STACK16OFFSET(callfrom_ip)-4 );
2022 fprintf( outfile, "\tpopl %%eax\n" );
2023 fprintf( outfile, "\tpopl %%edx\n" );
2024
2025 /* Restore all registers from CONTEXT */
2026 fprintf( outfile, "\tmovw %d(%%ebx), %%ss\n", CONTEXTOFFSET(SegSs) );
2027 fprintf( outfile, "\tmovl %d(%%ebx), %%esp\n", CONTEXTOFFSET(Esp) );
2028 fprintf( outfile, "\taddl $4, %%esp\n" ); /* room for final return address */
2029
2030 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(SegCs) );
2031 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(Eip) );
2032 fprintf( outfile, "\tpushl %%edx\n" );
2033 fprintf( outfile, "\tpushl %%eax\n" );
2034 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(EFlags) );
2035 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(SegDs) );
2036
2037 fprintf( outfile, "\tmovw %d(%%ebx), %%es\n", CONTEXTOFFSET(SegEs) );
2038 fprintf( outfile, "\tmovw %d(%%ebx), %%fs\n", CONTEXTOFFSET(SegFs) );
2039 fprintf( outfile, "\tmovw %d(%%ebx), %%gs\n", CONTEXTOFFSET(SegGs) );
2040
2041 fprintf( outfile, "\tmovl %d(%%ebx), %%ebp\n", CONTEXTOFFSET(Ebp) );
2042 fprintf( outfile, "\tmovl %d(%%ebx), %%esi\n", CONTEXTOFFSET(Esi) );
2043 fprintf( outfile, "\tmovl %d(%%ebx), %%edi\n", CONTEXTOFFSET(Edi) );
2044 fprintf( outfile, "\tmovl %d(%%ebx), %%eax\n", CONTEXTOFFSET(Eax) );
2045 fprintf( outfile, "\tmovl %d(%%ebx), %%edx\n", CONTEXTOFFSET(Edx) );
2046 fprintf( outfile, "\tmovl %d(%%ebx), %%ecx\n", CONTEXTOFFSET(Ecx) );
2047 fprintf( outfile, "\tmovl %d(%%ebx), %%ebx\n", CONTEXTOFFSET(Ebx) );
2048
2049 fprintf( outfile, "\tpopl %%ds\n" );
2050 fprintf( outfile, "\tpopfl\n" );
2051 fprintf( outfile, "\tlret\n" );
2052 }
2053 else
2054 {
2055 /* Switch stack back */
2056 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2057 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2058 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2059
2060 /* Restore registers */
2061 fprintf( outfile, "\tpopl %%edx\n" );
2062 fprintf( outfile, "\tpopl %%ecx\n" );
2063 fprintf( outfile, "\tpopl %%ebp\n" );
2064 fprintf( outfile, "\tpopw %%ds\n" );
2065 fprintf( outfile, "\tpopw %%es\n" );
2066 fprintf( outfile, "\tpopw %%fs\n" );
2067 fprintf( outfile, "\tpopw %%gs\n" );
2068
2069 /* Prepare return value and set flags accordingly */
2070 if ( !short_ret )
2071 fprintf( outfile, "\tshldl $16, %%eax, %%edx\n" );
2072 fprintf( outfile, "\torl %%eax, %%eax\n" );
2073
2074 /* Return to return stub which will return to caller */
2075 fprintf( outfile, "\tlret $12\n" );
2076 }
2077 }
2078
2079
2080 /*******************************************************************
2081 * BuildCallTo16Core
2082 *
2083 * This routine builds the core routines used in 32->16 thunks:
2084 *
2085 * extern void CALLBACK CallTo16Word( SEGPTR target, int nb_args );
2086 * extern void CALLBACK CallTo16Long( SEGPTR target, int nb_args );
2087 * extern void CALLBACK CallTo16RegisterShort( const CONTEXT86 *context, int nb_args );
2088 * extern void CALLBACK CallTo16RegisterLong ( const CONTEXT86 *context, int nb_args );
2089 *
2090 * These routines can be called directly from 32-bit code.
2091 *
2092 * All routines expect that the 16-bit stack contents (arguments) were
2093 * already set up by the caller; nb_args must contain the number of bytes
2094 * to be conserved. The 16-bit SS:SP will be set accordinly.
2095 *
2096 * All other registers are either taken from the CONTEXT86 structure
2097 * or else set to default values. The target routine address is either
2098 * given directly or taken from the CONTEXT86.
2099 *
2100 * If you want to call a 16-bit routine taking only standard argument types
2101 * (WORD and LONG), you can also have an appropriate argument conversion
2102 * stub automatically generated (see BuildCallTo16); you'd then call this
2103 * stub, which in turn would prepare the 16-bit stack and call the appropiate
2104 * core routine.
2105 *
2106 */
2107
2108 static void BuildCallTo16Core( FILE *outfile, int short_ret, int reg_func )
2109 {
2110 char *name = reg_func == 2 ? "RegisterLong" :
2111 reg_func == 1 ? "RegisterShort" :
2112 short_ret? "Word" : "Long";
2113
2114 /* Function header */
2115 fprintf( outfile, "\n\t.align 4\n" );
2116 #ifdef USE_STABS
2117 fprintf( outfile, ".stabs \"CallTo16%s:F1\",36,0,0," PREFIX "CallTo16%s\n",
2118 name, name);
2119 #endif
2120 fprintf( outfile, "\t.globl " PREFIX "CallTo16%s\n", name );
2121 fprintf( outfile, PREFIX "CallTo16%s:\n", name );
2122
2123 /* Function entry sequence */
2124 fprintf( outfile, "\tpushl %%ebp\n" );
2125 fprintf( outfile, "\tmovl %%esp, %%ebp\n" );
2126
2127 /* Save the 32-bit registers */
2128 fprintf( outfile, "\tpushl %%ebx\n" );
2129 fprintf( outfile, "\tpushl %%ecx\n" );
2130 fprintf( outfile, "\tpushl %%edx\n" );
2131 fprintf( outfile, "\tpushl %%esi\n" );
2132 fprintf( outfile, "\tpushl %%edi\n" );
2133
2134 if ( UsePIC )
2135 {
2136 /* Get Global Offset Table into %ebx */
2137 fprintf( outfile, "\tcall .LCallTo16%s.getgot1\n", name );
2138 fprintf( outfile, ".LCallTo16%s.getgot1:\n", name );
2139 fprintf( outfile, "\tpopl %%ebx\n" );
2140 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot1], %%ebx\n", name );
2141 }
2142
2143 /* Enter Win16 Mutex */
2144 if ( UsePIC )
2145 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock@PLT\n" );
2146 else
2147 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock\n" );
2148
2149 /* Print debugging info */
2150 if (debugging)
2151 {
2152 /* Push flags, number of arguments, and target */
2153 fprintf( outfile, "\tpushl $%d\n", reg_func );
2154 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2155 fprintf( outfile, "\tpushl 8(%%ebp)\n" );
2156
2157 if ( UsePIC )
2158 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16@PLT\n" );
2159 else
2160 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16\n" );
2161
2162 fprintf( outfile, "\taddl $12, %%esp\n" );
2163 }
2164
2165 /* Get return address */
2166 if ( UsePIC )
2167 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr@GOTOFF(%%ebx), %%ecx\n" );
2168 else
2169 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr, %%ecx\n" );
2170
2171 /* Call the actual CallTo16 routine (simulate a lcall) */
2172 fprintf( outfile, "\tpushl %%cs\n" );
2173 fprintf( outfile, "\tcall .LCallTo16%s\n", name );
2174
2175 /* Convert and push return value */
2176 if ( short_ret )
2177 {
2178 fprintf( outfile, "\tmovzwl %%ax, %%eax\n" );
2179 fprintf( outfile, "\tpushl %%eax\n" );
2180 }
2181 else if ( reg_func != 2 )
2182 {
2183 fprintf( outfile, "\tshll $16,%%edx\n" );
2184 fprintf( outfile, "\tmovw %%ax,%%dx\n" );
2185 fprintf( outfile, "\tpushl %%edx\n" );
2186 }
2187 else
2188 fprintf( outfile, "\tpushl %%eax\n" );
2189
2190 if ( UsePIC )
2191 {
2192 /* Get Global Offset Table into %ebx (might have been overwritten) */
2193 fprintf( outfile, "\tcall .LCallTo16%s.getgot2\n", name );
2194 fprintf( outfile, ".LCallTo16%s.getgot2:\n", name );
2195 fprintf( outfile, "\tpopl %%ebx\n" );
2196 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot2], %%ebx\n", name );
2197 }
2198
2199 /* Print debugging info */
2200 if (debugging)
2201 {
2202 if ( UsePIC )
2203 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret@PLT\n" );
2204 else
2205 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret\n" );
2206 }
2207
2208 /* Leave Win16 Mutex */
2209 if ( UsePIC )
2210 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock@PLT\n" );
2211 else
2212 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock\n" );
2213
2214 /* Get return value */
2215 fprintf( outfile, "\tpopl %%eax\n" );
2216
2217 /* Restore the 32-bit registers */
2218 fprintf( outfile, "\tpopl %%edi\n" );
2219 fprintf( outfile, "\tpopl %%esi\n" );
2220 fprintf( outfile, "\tpopl %%edx\n" );
2221 fprintf( outfile, "\tpopl %%ecx\n" );
2222 fprintf( outfile, "\tpopl %%ebx\n" );
2223
2224 /* Function exit sequence */
2225 fprintf( outfile, "\tpopl %%ebp\n" );
2226 fprintf( outfile, "\tret $8\n" );
2227
2228
2229 /* Start of the actual CallTo16 routine */
2230
2231 fprintf( outfile, ".LCallTo16%s:\n", name );
2232
2233 /* Complete STACK32FRAME */
2234 fprintf( outfile, "\t.byte 0x64\n\tpushl (%d)\n", STACKOFFSET );
2235 fprintf( outfile, "\tmovl %%esp,%%edx\n" );
2236
2237 /* Switch to the 16-bit stack */
2238 #ifdef __svr4__
2239 fprintf( outfile,"\tdata16\n");
2240 #endif
2241 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2);
2242 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET );
2243 fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET );
2244
2245 /* Make %bp point to the previous stackframe (built by CallFrom16) */
2246 fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" );
2247 fprintf( outfile, "\tleal %d(%%ebp),%%ebp\n", STACK16OFFSET(bp) );
2248
2249 /* Add the specified offset to the new sp */
2250 fprintf( outfile, "\tsubw %d(%%edx), %%sp\n", STACK32OFFSET(nb_args) );
2251
2252 /* Push the return address
2253 * With sreg suffix, we push 16:16 address (normal lret)
2254 * With lreg suffix, we push 16:32 address (0x66 lret, for KERNEL32_45)
2255 */
2256 if (reg_func != 2)
2257 fprintf( outfile, "\tpushl %%ecx\n" );
2258 else
2259 {
2260 fprintf( outfile, "\tshldl $16, %%ecx, %%eax\n" );
2261 fprintf( outfile, "\tpushw $0\n" );
2262 fprintf( outfile, "\tpushw %%ax\n" );
2263 fprintf( outfile, "\tpushw $0\n" );
2264 fprintf( outfile, "\tpushw %%cx\n" );
2265 }
2266
2267 if (reg_func)
2268 {
2269 /* Push the called routine address */
2270 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", STACK32OFFSET(target) );
2271 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegCs) );
2272 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(Eip) );
2273
2274 /* Get the registers */
2275 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegDs) );
2276 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegEs) );
2277 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2278 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegFs) );
2279 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2280 fprintf( outfile, "\tmovl %d(%%edx),%%ebp\n", CONTEXTOFFSET(Ebp) );
2281 fprintf( outfile, "\tmovl %d(%%edx),%%esi\n", CONTEXTOFFSET(Esi) );
2282 fprintf( outfile, "\tmovl %d(%%edx),%%edi\n", CONTEXTOFFSET(Edi) );
2283 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(Eax) );
2284 fprintf( outfile, "\tmovl %d(%%edx),%%ebx\n", CONTEXTOFFSET(Ebx) );
2285 fprintf( outfile, "\tmovl %d(%%edx),%%ecx\n", CONTEXTOFFSET(Ecx) );
2286 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", CONTEXTOFFSET(Edx) );
2287
2288 /* Get the 16-bit ds */
2289 fprintf( outfile, "\tpopw %%ds\n" );
2290 }
2291 else /* not a register function */
2292 {
2293 /* Push the called routine address */
2294 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK32OFFSET(target) );
2295
2296 /* Set %fs to the value saved by the last CallFrom16 */
2297 fprintf( outfile, "\tmovw %d(%%ebp),%%ax\n", STACK16OFFSET(fs)-STACK16OFFSET(bp) );
2298 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2299
2300 /* Set %ds and %es (and %ax just in case) equal to %ss */
2301 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2302 fprintf( outfile, "\tmovw %%ax,%%ds\n" );
2303 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2304 }
2305
2306 /* Jump to the called routine */
2307 fprintf( outfile, "\t.byte 0x66\n" );
2308 fprintf( outfile, "\tlret\n" );
2309 }
2310
2311 /*******************************************************************
2312 * BuildRet16Func
2313 *
2314 * Build the return code for 16-bit callbacks
2315 */
2316 static void BuildRet16Func( FILE *outfile )
2317 {
2318 /*
2319 * Note: This must reside in the .data section to allow
2320 * run-time relocation of the SYSLEVEL_Win16CurrentTeb symbol
2321 */
2322
2323 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_Ret\n" );
2324 fprintf( outfile, PREFIX "CallTo16_Ret:\n" );
2325
2326 /* Restore 32-bit segment registers */
2327
2328 fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector );
2329 #ifdef __svr4__
2330 fprintf( outfile, "\tdata16\n");
2331 #endif
2332 fprintf( outfile, "\tmovw %%bx,%%ds\n" );
2333 #ifdef __svr4__
2334 fprintf( outfile, "\tdata16\n");
2335 #endif
2336 fprintf( outfile, "\tmovw %%bx,%%es\n" );
2337
2338 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb,%%fs\n" );
2339
2340 /* Restore the 32-bit stack */
2341
2342 #ifdef __svr4__
2343 fprintf( outfile, "\tdata16\n");
2344 #endif
2345 fprintf( outfile, "\tmovw %%bx,%%ss\n" );
2346 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%esp\n", STACKOFFSET );
2347 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2348
2349 /* Return to caller */
2350
2351 fprintf( outfile, "\tlret\n" );
2352
2353 /* Declare the return address variable */
2354
2355 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_RetAddr\n" );
2356 fprintf( outfile, PREFIX "CallTo16_RetAddr:\t.long 0\n" );
2357 }
2358
2359 /*******************************************************************
2360 * BuildCallTo32CBClient
2361 *
2362 * Call a CBClient relay stub from 32-bit code (KERNEL.620).
2363 *
2364 * Since the relay stub is itself 32-bit, this should not be a problem;
2365 * unfortunately, the relay stubs are expected to switch back to a
2366 * 16-bit stack (and 16-bit code) after completion :-(
2367 *
2368 * This would conflict with our 16- vs. 32-bit stack handling, so
2369 * we simply switch *back* to our 32-bit stack before returning to
2370 * the caller ...
2371 *
2372 * The CBClient relay stub expects to be called with the following
2373 * 16-bit stack layout, and with ebp and ebx pointing into the 16-bit
2374 * stack at the designated places:
2375 *
2376 * ...
2377 * (ebp+14) original arguments to the callback routine
2378 * (ebp+10) far return address to original caller
2379 * (ebp+6) Thunklet target address
2380 * (ebp+2) Thunklet relay ID code
2381 * (ebp) BP (saved by CBClientGlueSL)
2382 * (ebp-2) SI (saved by CBClientGlueSL)
2383 * (ebp-4) DI (saved by CBClientGlueSL)
2384 * (ebp-6) DS (saved by CBClientGlueSL)
2385 *
2386 * ... buffer space used by the 16-bit side glue for temp copies
2387 *
2388 * (ebx+4) far return address to 16-bit side glue code
2389 * (ebx) saved 16-bit ss:sp (pointing to ebx+4)
2390 *
2391 * The 32-bit side glue code accesses both the original arguments (via ebp)
2392 * and the temporary copies prepared by the 16-bit side glue (via ebx).
2393 * After completion, the stub will load ss:sp from the buffer at ebx
2394 * and perform a far return to 16-bit code.
2395 *
2396 * To trick the relay stub into returning to us, we replace the 16-bit
2397 * return address to the glue code by a cs:ip pair pointing to our
2398 * return entry point (the original return address is saved first).
2399 * Our return stub thus called will then reload the 32-bit ss:esp and
2400 * return to 32-bit code (by using and ss:esp value that we have also
2401 * pushed onto the 16-bit stack before and a cs:eip values found at
2402 * that position on the 32-bit stack). The ss:esp to be restored is
2403 * found relative to the 16-bit stack pointer at:
2404 *
2405 * (ebx-4) ss (flat)
2406 * (ebx-8) sp (32-bit stack pointer)
2407 *
2408 * The second variant of this routine, CALL32_CBClientEx, which is used
2409 * to implement KERNEL.621, has to cope with yet another problem: Here,
2410 * the 32-bit side directly returns to the caller of the CBClient thunklet,
2411 * restoring registers saved by CBClientGlueSL and cleaning up the stack.
2412 * As we have to return to our 32-bit code first, we have to adapt the
2413 * layout of our temporary area so as to include values for the registers
2414 * that are to be restored, and later (in the implementation of KERNEL.621)
2415 * we *really* restore them. The return stub restores DS, DI, SI, and BP
2416 * from the stack, skips the next 8 bytes (CBClient relay code / target),
2417 * and then performs a lret NN, where NN is the number of arguments to be
2418 * removed. Thus, we prepare our temporary area as follows:
2419 *
2420 * (ebx+22) 16-bit cs (this segment)
2421 * (ebx+20) 16-bit ip ('16-bit' return entry point)
2422 * (ebx+16) 32-bit ss (flat)
2423 * (ebx+12) 32-bit sp (32-bit stack pointer)
2424 * (ebx+10) 16-bit bp (points to ebx+24)
2425 * (ebx+8) 16-bit si (ignored)
2426 * (ebx+6) 16-bit di (ignored)
2427 * (ebx+4) 16-bit ds (we actually use the flat DS here)
2428 * (ebx+2) 16-bit ss (16-bit stack segment)
2429 * (ebx+0) 16-bit sp (points to ebx+4)
2430 *
2431 * Note that we ensure that DS is not changed and remains the flat segment,
2432 * and the 32-bit stack pointer our own return stub needs fits just
2433 * perfectly into the 8 bytes that are skipped by the Windows stub.
2434 * One problem is that we have to determine the number of removed arguments,
2435 * as these have to be really removed in KERNEL.621. Thus, the BP value
2436 * that we place in the temporary area to be restored, contains the value
2437 * that SP would have if no arguments were removed. By comparing the actual
2438 * value of SP with this value in our return stub we can compute the number
2439 * of removed arguments. This is then returned to KERNEL.621.
2440 *
2441 * The stack layout of this function:
2442 * (ebp+20) nArgs pointer to variable receiving nr. of args (Ex only)
2443 * (ebp+16) esi pointer to caller's esi value
2444 * (ebp+12) arg ebp value to be set for relay stub
2445 * (ebp+8) func CBClient relay stub address
2446 * (ebp+4) ret addr
2447 * (ebp) ebp
2448 */
2449 static void BuildCallTo32CBClient( FILE *outfile, BOOL isEx )
2450 {
2451 char *name = isEx? "CBClientEx" : "CBClient";
2452 int size = isEx? 24 : 12;
2453
2454 /* Function header */
2455
2456 fprintf( outfile, "\n\t.align 4\n" );
2457 #ifdef USE_STABS
2458 fprintf( outfile, ".stabs \"CALL32_%s:F1\",36,0,0," PREFIX "CALL32_%s\n",
2459 name, name );
2460 #endif
2461 fprintf( outfile, "\t.globl " PREFIX "CALL32_%s\n", name );
2462 fprintf( outfile, PREFIX "CALL32_%s:\n", name );
2463
2464 /* Entry code */
2465
2466 fprintf( outfile, "\tpushl %%ebp\n" );
2467 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2468 fprintf( outfile, "\tpushl %%edi\n" );
2469 fprintf( outfile, "\tpushl %%esi\n" );
2470 fprintf( outfile, "\tpushl %%ebx\n" );
2471
2472 /* Get the 16-bit stack */
2473
2474 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET);
2475
2476 /* Convert it to a flat address */
2477
2478 fprintf( outfile, "\tshldl $16,%%ebx,%%eax\n" );
2479 fprintf( outfile, "\tandl $0xfff8,%%eax\n" );
2480 fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%esi\n" );
2481 fprintf( outfile, "\tmovw %%bx,%%ax\n" );
2482 fprintf( outfile, "\taddl %%eax,%%esi\n" );
2483
2484 /* Allocate temporary area (simulate STACK16_PUSH) */
2485
2486 fprintf( outfile, "\tpushf\n" );
2487 fprintf( outfile, "\tcld\n" );
2488 fprintf( outfile, "\tleal -%d(%%esi), %%edi\n", size );
2489 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2490 fprintf( outfile, "\trep\n\tmovsb\n" );
2491 fprintf( outfile, "\tpopf\n" );
2492
2493 fprintf( outfile, "\t.byte 0x64\n\tsubw $%d,(%d)\n", size, STACKOFFSET );
2494
2495 fprintf( outfile, "\tpushl %%edi\n" ); /* remember address */
2496
2497 /* Set up temporary area */
2498
2499 if ( !isEx )
2500 {
2501 fprintf( outfile, "\tleal 4(%%edi), %%edi\n" );
2502
2503 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2504 fprintf( outfile, "\tmovl %%eax, -8(%%edi)\n" ); /* 32-bit sp */
2505
2506 fprintf( outfile, "\tmovl %%ss, %%ax\n" );
2507 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2508 fprintf( outfile, "\tmovl %%eax, -4(%%edi)\n" ); /* 32-bit ss */
2509
2510 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 + 4 );
2511 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" ); /* 16-bit ss:sp */
2512
2513 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2514 fprintf( outfile, "\tmovl %%eax, 4(%%edi)\n" ); /* overwrite return address */
2515 }
2516 else
2517 {
2518 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 );
2519 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" );
2520
2521 fprintf( outfile, "\tmovl %%ds, %%ax\n" );
2522 fprintf( outfile, "\tmovw %%ax, 4(%%edi)\n" );
2523
2524 fprintf( outfile, "\taddl $20, %%ebx\n" );
2525 fprintf( outfile, "\tmovw %%bx, 10(%%edi)\n" );
2526
2527 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2528 fprintf( outfile, "\tmovl %%eax, 12(%%edi)\n" );
2529
2530 fprintf( outfile, "\tmovl %%ss, %%ax\n" );
2531 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2532 fprintf( outfile, "\tmovl %%eax, 16(%%edi)\n" );
2533
2534 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2535 fprintf( outfile, "\tmovl %%eax, 20(%%edi)\n" );
2536 }
2537
2538 /* Set up registers and call CBClient relay stub (simulating a far call) */
2539
2540 fprintf( outfile, "\tmovl 16(%%ebp), %%esi\n" );
2541 fprintf( outfile, "\tmovl (%%esi), %%esi\n" );
2542
2543 fprintf( outfile, "\tmovl %%edi, %%ebx\n" );
2544 fprintf( outfile, "\tmovl 8(%%ebp), %%eax\n" );
2545 fprintf( outfile, "\tmovl 12(%%ebp), %%ebp\n" );
2546
2547 fprintf( outfile, "\tpushl %%cs\n" );
2548 fprintf( outfile, "\tcall *%%eax\n" );
2549
2550 /* Return new esi value to caller */
2551
2552 fprintf( outfile, "\tmovl 32(%%esp), %%edi\n" );
2553 fprintf( outfile, "\tmovl %%esi, (%%edi)\n" );
2554
2555 /* Cleanup temporary area (simulate STACK16_POP) */
2556
2557 fprintf( outfile, "\tpop %%esi\n" );
2558
2559 fprintf( outfile, "\tpushf\n" );
2560 fprintf( outfile, "\tstd\n" );
2561 fprintf( outfile, "\tdec %%esi\n" );
2562 fprintf( outfile, "\tleal %d(%%esi), %%edi\n", size );
2563 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2564 fprintf( outfile, "\trep\n\tmovsb\n" );
2565 fprintf( outfile, "\tpopf\n" );
2566
2567 fprintf( outfile, "\t.byte 0x64\n\taddw $%d,(%d)\n", size, STACKOFFSET );
2568
2569 /* Return argument size to caller */
2570 if ( isEx )
2571 {
2572 fprintf( outfile, "\tmovl 32(%%esp), %%ebx\n" );
2573 fprintf( outfile, "\tmovl %%ebp, (%%ebx)\n" );
2574 }
2575
2576 /* Restore registers and return */
2577
2578 fprintf( outfile, "\tpopl %%ebx\n" );
2579 fprintf( outfile, "\tpopl %%esi\n" );
2580 fprintf( outfile, "\tpopl %%edi\n" );
2581 fprintf( outfile, "\tpopl %%ebp\n" );
2582 fprintf( outfile, "\tret\n" );
2583 }
2584
2585 static void BuildCallTo32CBClientRet( FILE *outfile, BOOL isEx )
2586 {
2587 char *name = isEx? "CBClientEx" : "CBClient";
2588
2589 /* '16-bit' return stub */
2590
2591 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_Ret\n", name );
2592 fprintf( outfile, PREFIX "CALL32_%s_Ret:\n", name );
2593
2594 if ( !isEx )
2595 {
2596 fprintf( outfile, "\tmovzwl %%sp, %%ebx\n" );
2597 fprintf( outfile, "\tlssl %%ss:-16(%%ebx), %%esp\n" );
2598 }
2599 else
2600 {
2601 fprintf( outfile, "\tmovzwl %%bp, %%ebx\n" );
2602 fprintf( outfile, "\tsubw %%bp, %%sp\n" );
2603 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
2604 fprintf( outfile, "\tlssl %%ss:-12(%%ebx), %%esp\n" );
2605 }
2606 fprintf( outfile, "\tlret\n" );
2607
2608 /* Declare the return address variable */
2609
2610 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_RetAddr\n", name );
2611 fprintf( outfile, PREFIX "CALL32_%s_RetAddr:\t.long 0\n", name );
2612 }
2613
2614
2615 /*******************************************************************
2616 * BuildCallTo32LargeStack
2617 *
2618 * Build the function used to switch to the original 32-bit stack
2619 * before calling a 32-bit function from 32-bit code. This is used for
2620 * functions that need a large stack, like X bitmaps functions.
2621 *
2622 * The generated function has the following prototype:
2623 * int xxx( int (*func)(), void *arg );
2624 *
2625 * The pointer to the function can be retrieved by calling CALL32_Init,
2626 * which also takes care of saving the current 32-bit stack pointer.
2627 * Furthermore, CALL32_Init switches to a new stack and jumps to the
2628 * specified target address.
2629 *
2630 * NOTE: The CALL32_LargeStack routine may be recursively entered by the
2631 * same thread, but not concurrently entered by several threads.
2632 *
2633 * Stack layout of CALL32_Init:
2634 *
2635 * (esp+12) new stack address
2636 * (esp+8) target address
2637 * (esp+4) pointer to variable to receive CALL32_LargeStack address
2638 * (esp) ret addr
2639 *
2640 * Stack layout of CALL32_LargeStack:
2641 * ... ...
2642 * (ebp+12) arg
2643 * (ebp+8) func
2644 * (ebp+4) ret addr
2645 * (ebp) ebp
2646 */
2647 static void BuildCallTo32LargeStack( FILE *outfile )
2648 {
2649 /* Initialization function */
2650
2651 fprintf( outfile, "\n\t.align 4\n" );
2652 #ifdef USE_STABS
2653 fprintf( outfile, ".stabs \"CALL32_Init:F1\",36,0,0," PREFIX "CALL32_Init\n");
2654 #endif
2655 fprintf( outfile, "\t.globl " PREFIX "CALL32_Init\n" );
2656 fprintf( outfile, "\t.type " PREFIX "CALL32_Init,@function\n" );
2657 fprintf( outfile, PREFIX "CALL32_Init:\n" );
2658 fprintf( outfile, "\tmovl %%esp,CALL32_Original32_esp\n" );
2659 fprintf( outfile, "\tpopl %%eax\n" );
2660 fprintf( outfile, "\tpopl %%eax\n" );
2661 fprintf( outfile, "\tmovl $CALL32_LargeStack,(%%eax)\n" );
2662 fprintf( outfile, "\tpopl %%eax\n" );
2663 fprintf( outfile, "\tpopl %%esp\n" );
2664 fprintf( outfile, "\tpushl %%eax\n" );
2665 fprintf( outfile, "\tret\n" );
2666
2667 /* Function header */
2668
2669 fprintf( outfile, "\n\t.align 4\n" );
2670 #ifdef USE_STABS
2671 fprintf( outfile, ".stabs \"CALL32_LargeStack:F1\",36,0,0,CALL32_LargeStack\n");
2672 #endif
2673 fprintf( outfile, "CALL32_LargeStack:\n" );
2674
2675 /* Entry code */
2676
2677 fprintf( outfile, "\tpushl %%ebp\n" );
2678 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2679
2680 /* Switch to the original 32-bit stack pointer */
2681
2682 fprintf( outfile, "\tcmpl $0, CALL32_RecursionCount\n" );
2683 fprintf( outfile, "\tjne CALL32_skip\n" );
2684 fprintf( outfile, "\tmovl CALL32_Original32_esp, %%esp\n" );
2685 fprintf( outfile, "CALL32_skip:\n" );
2686
2687 fprintf( outfile, "\tincl CALL32_RecursionCount\n" );
2688
2689 /* Transfer the argument and call the function */
2690
2691 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2692 fprintf( outfile, "\tcall *8(%%ebp)\n" );
2693
2694 /* Restore registers and return */
2695
2696 fprintf( outfile, "\tdecl CALL32_RecursionCount\n" );
2697
2698 fprintf( outfile, "\tmovl %%ebp,%%esp\n" );
2699 fprintf( outfile, "\tpopl %%ebp\n" );
2700 fprintf( outfile, "\tret\n" );
2701
2702 /* Data */
2703
2704 fprintf( outfile, "\t.data\n" );
2705 fprintf( outfile, "CALL32_Original32_esp:\t.long 0\n" );
2706 fprintf( outfile, "CALL32_RecursionCount:\t.long 0\n" );
2707 fprintf( outfile, "\t.text\n" );
2708 }
2709
2710
2711 /*******************************************************************
2712 * BuildCallFrom32Regs
2713 *
2714 * Build a 32-bit-to-Wine call-back function for a 'register' function.
2715 * 'args' is the number of dword arguments.
2716 *
2717 * Stack layout:
2718 * ...
2719 * (ebp+12) first arg
2720 * (ebp+8) ret addr to user code
2721 * (ebp+4) ret addr to relay code
2722 * (ebp+0) saved ebp
2723 * (ebp-128) buffer area to allow stack frame manipulation
2724 * (ebp-332) CONTEXT86 struct
2725 * (ebp-336) CONTEXT86 *argument
2726 * .... other arguments copied from (ebp+12)
2727 *
2728 * The entry point routine is called with a CONTEXT* extra argument,
2729 * following the normal args. In this context structure, EIP_reg
2730 * contains the return address to user code, and ESP_reg the stack
2731 * pointer on return (with the return address and arguments already
2732 * removed).
2733 */
2734 static void BuildCallFrom32Regs( FILE *outfile )
2735 {
2736 static const int STACK_SPACE = 128 + sizeof(CONTEXT86);
2737
2738 /* Function header */
2739
2740 fprintf( outfile, "\n\t.align 4\n" );
2741 #ifdef USE_STABS
2742 fprintf( outfile, ".stabs \"CALL32_Regs:F1\",36,0,0," PREFIX "CALL32_Regs\n" );
2743 #endif
2744 fprintf( outfile, "\t.globl " PREFIX "CALL32_Regs\n" );
2745 fprintf( outfile, PREFIX "CALL32_Regs:\n" );
2746
2747 /* Allocate some buffer space on the stack */
2748
2749 fprintf( outfile, "\tpushl %%ebp\n" );
2750 fprintf( outfile, "\tmovl %%esp,%%ebp\n ");
2751 fprintf( outfile, "\tleal -%d(%%esp), %%esp\n", STACK_SPACE );
2752
2753 /* Build the context structure */
2754
2755 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2756 fprintf( outfile, "\tpushfl\n" );
2757 fprintf( outfile, "\tpopl %%eax\n" );
2758 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2759 fprintf( outfile, "\tmovl 0(%%ebp),%%eax\n" );
2760 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2761 fprintf( outfile, "\tmovl %%ebx,%d(%%ebp)\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2762 fprintf( outfile, "\tmovl %%ecx,%d(%%ebp)\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2763 fprintf( outfile, "\tmovl %%edx,%d(%%ebp)\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2764 fprintf( outfile, "\tmovl %%esi,%d(%%ebp)\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2765 fprintf( outfile, "\tmovl %%edi,%d(%%ebp)\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2766
2767 fprintf( outfile, "\txorl %%eax,%%eax\n" );
2768 fprintf( outfile, "\tmovw %%cs,%%ax\n" );
2769 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegCs) - STACK_SPACE );
2770 fprintf( outfile, "\tmovw %%es,%%ax\n" );
2771 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2772 fprintf( outfile, "\tmovw %%fs,%%ax\n" );
2773 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2774 fprintf( outfile, "\tmovw %%gs,%%ax\n" );
2775 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2776 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2777 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegSs) - STACK_SPACE );
2778 fprintf( outfile, "\tmovw %%ds,%%ax\n" );
2779 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegDs) - STACK_SPACE );
2780 fprintf( outfile, "\tmovw %%ax,%%es\n" ); /* set %es equal to %ds just in case */
2781
2782 fprintf( outfile, "\tmovl $0x%x,%%eax\n", CONTEXT86_FULL );
2783 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(ContextFlags) - STACK_SPACE );
2784
2785 fprintf( outfile, "\tmovl 8(%%ebp),%%eax\n" ); /* Get %eip at time of call */
2786 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2787
2788 /* Transfer the arguments */
2789
2790 fprintf( outfile, "\tmovl 4(%%ebp),%%ebx\n" ); /* get relay code addr */
2791 fprintf( outfile, "\tpushl %%esp\n" ); /* push ptr to context struct */
2792 fprintf( outfile, "\tmovzbl 4(%%ebx),%%ecx\n" ); /* fetch number of args to copy */
2793 fprintf( outfile, "\tjecxz 1f\n" );
2794 fprintf( outfile, "\tsubl %%ecx,%%esp\n" );
2795 fprintf( outfile, "\tleal 12(%%ebp),%%esi\n" ); /* get %esp at time of call */
2796 fprintf( outfile, "\tmovl %%esp,%%edi\n" );
2797 fprintf( outfile, "\tshrl $2,%%ecx\n" );
2798 fprintf( outfile, "\tcld\n" );
2799 fprintf( outfile, "\trep\n\tmovsl\n" ); /* copy args */
2800
2801 fprintf( outfile, "1:\tmovzbl 5(%%ebx),%%eax\n" ); /* fetch number of args to remove */
2802 fprintf( outfile, "\tleal 12(%%ebp,%%eax),%%eax\n" );
2803 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2804
2805 /* Call the entry point */
2806
2807 fprintf( outfile, "\tcall *0(%%ebx)\n" );
2808
2809 /* Store %eip and %ebp onto the new stack */
2810
2811 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2812 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2813 fprintf( outfile, "\tmovl %%eax,-4(%%edx)\n" );
2814 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2815 fprintf( outfile, "\tmovl %%eax,-8(%%edx)\n" );
2816
2817 /* Restore the context structure */
2818
2819 /* Note: we don't bother to restore %cs, %ds and %ss
2820 * changing them in 32-bit code is a recipe for disaster anyway
2821 */
2822 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2823 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2824 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2825 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2826 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2827 fprintf( outfile, "\tmovw %%ax,%%gs\n" );
2828
2829 fprintf( outfile, "\tmovl %d(%%ebp),%%edi\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2830 fprintf( outfile, "\tmovl %d(%%ebp),%%esi\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2831 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2832 fprintf( outfile, "\tmovl %d(%%ebp),%%ecx\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2833 fprintf( outfile, "\tmovl %d(%%ebp),%%ebx\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2834
2835 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2836 fprintf( outfile, "\tpushl %%eax\n" );
2837 fprintf( outfile, "\tpopfl\n" );
2838 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2839
2840 fprintf( outfile, "\tmovl %d(%%ebp),%%ebp\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2841 fprintf( outfile, "\tleal -8(%%ebp),%%esp\n" );
2842 fprintf( outfile, "\tpopl %%ebp\n" );
2843 fprintf( outfile, "\tret\n" );
2844 }
2845
2846
2847 /*******************************************************************
2848 * BuildGlue
2849 *
2850 * Build the 16-bit-to-Wine/Wine-to-16-bit callback glue code
2851 */
2852 static void BuildGlue( FILE *outfile, FILE *infile )
2853 {
2854 char buffer[1024];
2855
2856 /* File header */
2857
2858 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
2859 input_file_name );
2860 fprintf( outfile, "#include \"builtin16.h\"\n" );
2861 fprintf( outfile, "#include \"stackframe.h\"\n\n" );
2862
2863 /* Build the callback glue functions */
2864
2865 while (fgets( buffer, sizeof(buffer), infile ))
2866 {
2867 if (strstr( buffer, "### start build ###" )) break;
2868 }
2869 while (fgets( buffer, sizeof(buffer), infile ))
2870 {
2871 char *p;
2872 if ( (p = strstr( buffer, "CallFrom16_" )) != NULL )
2873 {
2874 char *q, *profile = p + strlen( "CallFrom16_" );
2875 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2876 ;
2877 *q = '\0';
2878 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
2879 ;
2880 if ( ++q < p ) p[-1] = '\0'; else q = "";
2881 BuildCallFrom16Func( outfile, profile, q, FALSE );
2882 }
2883 if ( (p = strstr( buffer, "CallTo16_" )) != NULL )
2884 {
2885 char *q, *profile = p + strlen( "CallTo16_" );
2886 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2887 ;
2888 *q = '\0';
2889 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
2890 ;
2891 if ( ++q < p ) p[-1] = '\0'; else q = "";
2892 BuildCallTo16Func( outfile, profile, q );
2893 }
2894 if (strstr( buffer, "### stop build ###" )) break;
2895 }
2896
2897 fclose( infile );
2898 }
2899
2900 /*******************************************************************
2901 * BuildCall16
2902 *
2903 * Build the 16-bit callbacks
2904 */
2905 static void BuildCall16( FILE *outfile )
2906 {
2907 /* File header */
2908
2909 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
2910 fprintf( outfile, "\t.text\n" );
2911
2912 #ifdef __i386__
2913
2914 #ifdef USE_STABS
2915 if (output_file_name)
2916 {
2917 char buffer[1024];
2918 getcwd(buffer, sizeof(buffer));
2919 fprintf( outfile, "\t.file\t\"%s\"\n", output_file_name );
2920
2921 /*
2922 * The stabs help the internal debugger as they are an indication that it
2923 * is sensible to step into a thunk/trampoline.
2924 */
2925 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
2926 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", output_file_name );
2927 fprintf( outfile, "Code_Start:\n\n" );
2928 }
2929 #endif
2930 fprintf( outfile, PREFIX"Call16_Start:\n" );
2931 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
2932 fprintf( outfile, "\t.byte 0\n\n" );
2933
2934
2935 /* Standard CallFrom16 routine (WORD return) */
2936 BuildCallFrom16Core( outfile, FALSE, FALSE, TRUE );
2937
2938 /* Standard CallFrom16 routine (DWORD return) */
2939 BuildCallFrom16Core( outfile, FALSE, FALSE, FALSE );
2940
2941 /* Register CallFrom16 routine */
2942 BuildCallFrom16Core( outfile, TRUE, FALSE, FALSE );
2943
2944 /* C16ThkSL CallFrom16 routine */
2945 BuildCallFrom16Core( outfile, FALSE, TRUE, FALSE );
2946
2947 /* Standard CallTo16 routine (WORD return) */
2948 BuildCallTo16Core( outfile, TRUE, FALSE );
2949
2950 /* Standard CallTo16 routine (DWORD return) */
2951 BuildCallTo16Core( outfile, FALSE, FALSE );
2952
2953 /* Register CallTo16 routine (16:16 retf) */
2954 BuildCallTo16Core( outfile, FALSE, 1 );
2955
2956 /* Register CallTo16 routine (16:32 retf) */
2957 BuildCallTo16Core( outfile, FALSE, 2 );
2958
2959 /* CBClientThunkSL routine */
2960 BuildCallTo32CBClient( outfile, FALSE );
2961
2962 /* CBClientThunkSLEx routine */
2963 BuildCallTo32CBClient( outfile, TRUE );
2964
2965 fprintf( outfile, PREFIX"Call16_End:\n" );
2966 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
2967
2968 #ifdef USE_STABS
2969 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
2970 fprintf( outfile, ".Letext:\n");
2971 #endif
2972
2973 /* The whole Call16_Ret segment must lie within the .data section */
2974 fprintf( outfile, "\n\t.data\n" );
2975 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
2976 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
2977
2978 /* Standard CallTo16 return stub */
2979 BuildRet16Func( outfile );
2980
2981 /* CBClientThunkSL return stub */
2982 BuildCallTo32CBClientRet( outfile, FALSE );
2983
2984 /* CBClientThunkSLEx return stub */
2985 BuildCallTo32CBClientRet( outfile, TRUE );
2986
2987 /* End of Call16_Ret segment */
2988 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
2989 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
2990
2991 #else /* __i386__ */
2992
2993 fprintf( outfile, PREFIX"Call16_Start:\n" );
2994 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
2995 fprintf( outfile, "\t.byte 0\n\n" );
2996 fprintf( outfile, PREFIX"Call16_End:\n" );
2997 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
2998
2999 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
3000 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
3001 fprintf( outfile, "\t.byte 0\n\n" );
3002 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3003 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3004
3005 #endif /* __i386__ */
3006 }
3007
3008 /*******************************************************************
3009 * BuildCall32
3010 *
3011 * Build the 32-bit callbacks
3012 */
3013 static void BuildCall32( FILE *outfile )
3014 {
3015 /* File header */
3016
3017 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
3018 fprintf( outfile, "\t.text\n" );
3019
3020 #ifdef __i386__
3021
3022 #ifdef USE_STABS
3023 if (output_file_name)
3024 {
3025 char buffer[1024];
3026 getcwd(buffer, sizeof(buffer));
3027 fprintf( outfile, "\t.file\t\"%s\"\n", output_file_name );
3028
3029 /*
3030 * The stabs help the internal debugger as they are an indication that it
3031 * is sensible to step into a thunk/trampoline.
3032 */
3033 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
3034 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", output_file_name );
3035 fprintf( outfile, "Code_Start:\n" );
3036 }
3037 #endif
3038
3039 /* Build the 32-bit large stack callback */
3040
3041 BuildCallTo32LargeStack( outfile );
3042
3043 /* Build the register callback function */
3044
3045 BuildCallFrom32Regs( outfile );
3046
3047 #ifdef USE_STABS
3048 fprintf( outfile, "\t.text\n");
3049 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3050 fprintf( outfile, ".Letext:\n");
3051 #endif
3052
3053 #else /* __i386__ */
3054
3055 /* Just to avoid an empty file */
3056 fprintf( outfile, "\t.long 0\n" );
3057
3058 #endif /* __i386__ */
3059 }
3060
3061
3062 /*******************************************************************
3063 * usage
3064 */
3065 static void usage(void)
3066 {
3067 fprintf( stderr,
3068 "usage: build [-pic] [-o outfile] -spec SPEC_FILE\n"
3069 " build [-pic] [-o outfile] -glue SOURCE_FILE\n"
3070 " build [-pic] [-o outfile] -call16\n"
3071 " build [-pic] [-o outfile] -call32\n" );
3072 if (output_file_name) unlink( output_file_name );
3073 exit(1);
3074 }
3075
3076
3077 /*******************************************************************
3078 * open_input
3079 */
3080 static FILE *open_input( const char *name )
3081 {
3082 FILE *f;
3083
3084 if (!name)
3085 {
3086 input_file_name = "<stdin>";
3087 return stdin;
3088 }
3089 input_file_name = name;
3090 if (!(f = fopen( name, "r" )))
3091 {
3092 fprintf( stderr, "Cannot open input file '%s'\n", name );
3093 if (output_file_name) unlink( output_file_name );
3094 exit(1);
3095 }
3096 return f;
3097 }
3098
3099 /*******************************************************************
3100 * main
3101 */
3102 int main(int argc, char **argv)
3103 {
3104 FILE *outfile = stdout;
3105
3106 if (argc < 2) usage();
3107
3108 if (!strcmp( argv[1], "-pic" ))
3109 {
3110 UsePIC = 1;
3111 argv += 1;
3112 argc -= 1;
3113 if (argc < 2) usage();
3114 }
3115
3116 if (!strcmp( argv[1], "-o" ))
3117 {
3118 output_file_name = argv[2];
3119 argv += 2;
3120 argc -= 2;
3121 if (argc < 2) usage();
3122 if (!(outfile = fopen( output_file_name, "w" )))
3123 {
3124 fprintf( stderr, "Unable to create output file '%s'\n", output_file_name );
3125 exit(1);
3126 }
3127 }
3128
3129 /* Retrieve the selector values; this assumes that we are building
3130 * the asm files on the platform that will also run them. Probably
3131 * a safe assumption to make.
3132 */
3133 GET_CS( Code_Selector );
3134 GET_DS( Data_Selector );
3135
3136 if (!strcmp( argv[1], "-spec" )) BuildSpecFile( outfile, open_input( argv[2] ) );
3137 else if (!strcmp( argv[1], "-glue" )) BuildGlue( outfile, open_input( argv[2] ) );
3138 else if (!strcmp( argv[1], "-call16" )) BuildCall16( outfile );
3139 else if (!strcmp( argv[1], "-call32" )) BuildCall32( outfile );
3140 else
3141 {
3142 fclose( outfile );
3143 usage();
3144 }
3145
3146 fclose( outfile );
3147 return 0;
3148 }
Maarten's multimedia branch