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Fix (harmless) assembler warnings.
[wine/multimedia.git] / tools / build.c
blob870c65b443490e9e90c2668ed346f23bd4d35723
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 char rsrc_name[80];
157 static int nb_imports;
158 static int nb_entry_points;
159 static int nb_names;
160 static const char *input_file_name;
161 static const char *output_file_name;
162
163 char *ParseBuffer = NULL;
164 char *ParseNext;
165 char ParseSaveChar;
166 int Line;
167
168 static int UsePIC = 0;
169
170 static int debugging = 1;
171
172 /* Offset of a structure field relative to the start of the struct */
173 #define STRUCTOFFSET(type,field) ((int)&((type *)0)->field)
174
175 /* Offset of register relative to the start of the CONTEXT struct */
176 #define CONTEXTOFFSET(reg) STRUCTOFFSET(CONTEXT86,reg)
177
178 /* Offset of register relative to the start of the STACK16FRAME struct */
179 #define STACK16OFFSET(reg) STRUCTOFFSET(STACK16FRAME,reg)
180
181 /* Offset of register relative to the start of the STACK32FRAME struct */
182 #define STACK32OFFSET(reg) STRUCTOFFSET(STACK32FRAME,reg)
183
184 /* Offset of the stack pointer relative to %fs:(0) */
185 #define STACKOFFSET (STRUCTOFFSET(TEB,cur_stack))
186
187 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local );
188
189 static void *xmalloc (size_t size)
190 {
191 void *res;
192
193 res = malloc (size ? size : 1);
194 if (res == NULL)
195 {
196 fprintf (stderr, "Virtual memory exhausted.\n");
197 if (output_file_name) unlink( output_file_name );
198 exit (1);
199 }
200 return res;
201 }
202
203
204 static void *xrealloc (void *ptr, size_t size)
205 {
206 void *res = realloc (ptr, size);
207 if (res == NULL)
208 {
209 fprintf (stderr, "Virtual memory exhausted.\n");
210 if (output_file_name) unlink( output_file_name );
211 exit (1);
212 }
213 return res;
214 }
215
216 static char *xstrdup( const char *str )
217 {
218 char *res = strdup( str );
219 if (!res)
220 {
221 fprintf (stderr, "Virtual memory exhausted.\n");
222 if (output_file_name) unlink( output_file_name );
223 exit (1);
224 }
225 return res;
226 }
227
228 static void fatal_error( const char *msg, ... )
229 {
230 va_list valist;
231 va_start( valist, msg );
232 fprintf( stderr, "%s:%d: ", input_file_name, Line );
233 vfprintf( stderr, msg, valist );
234 va_end( valist );
235 if (output_file_name) unlink( output_file_name );
236 exit(1);
237 }
238
239 static int IsNumberString(char *s)
240 {
241 while (*s != '\0')
242 if (!isdigit(*s++))
243 return 0;
244
245 return 1;
246 }
247
248 static char *strupper(char *s)
249 {
250 char *p;
251
252 for(p = s; *p != '\0'; p++)
253 *p = toupper(*p);
254
255 return s;
256 }
257
258 static char * GetTokenInLine(void)
259 {
260 char *p;
261 char *token;
262
263 if (ParseNext != ParseBuffer)
264 {
265 if (ParseSaveChar == '\0')
266 return NULL;
267 *ParseNext = ParseSaveChar;
268 }
269
270 /*
271 * Remove initial white space.
272 */
273 for (p = ParseNext; isspace(*p); p++)
274 ;
275
276 if ((*p == '\0') || (*p == '#'))
277 return NULL;
278
279 /*
280 * Find end of token.
281 */
282 token = p++;
283 if (*token != '(' && *token != ')')
284 while (*p != '\0' && *p != '(' && *p != ')' && !isspace(*p))
285 p++;
286
287 ParseSaveChar = *p;
288 ParseNext = p;
289 *p = '\0';
290
291 return token;
292 }
293
294 static char * GetToken(void)
295 {
296 char *token;
297
298 if (ParseBuffer == NULL)
299 {
300 ParseBuffer = xmalloc(512);
301 ParseNext = ParseBuffer;
302 while (1)
303 {
304 Line++;
305 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
306 return NULL;
307 if (ParseBuffer[0] != '#')
308 break;
309 }
310 }
311
312 while ((token = GetTokenInLine()) == NULL)
313 {
314 ParseNext = ParseBuffer;
315 while (1)
316 {
317 Line++;
318 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
319 return NULL;
320 if (ParseBuffer[0] != '#')
321 break;
322 }
323 }
324
325 return token;
326 }
327
328
329 static int name_compare( const void *name1, const void *name2 )
330 {
331 ORDDEF *odp1 = *(ORDDEF **)name1;
332 ORDDEF *odp2 = *(ORDDEF **)name2;
333 return strcmp( odp1->name, odp2->name );
334 }
335
336 /*******************************************************************
337 * AssignOrdinals
338 *
339 * Assign ordinals to all entry points.
340 */
341 static void AssignOrdinals(void)
342 {
343 int i, ordinal;
344
345 /* sort the list of names */
346 qsort( Names, nb_names, sizeof(Names[0]), name_compare );
347
348 /* check for duplicate names */
349 for (i = 0; i < nb_names - 1; i++)
350 {
351 if (!strcmp( Names[i]->name, Names[i+1]->name ))
352 {
353 Line = MAX( Names[i]->lineno, Names[i+1]->lineno );
354 fatal_error( "'%s' redefined (previous definition at line %d)\n",
355 Names[i]->name, MIN( Names[i]->lineno, Names[i+1]->lineno ) );
356 }
357 }
358
359 /* start assigning from Base, or from 1 if no ordinal defined yet */
360 if (Base == MAX_ORDINALS) Base = 1;
361 for (i = 0, ordinal = Base; i < nb_names; i++)
362 {
363 if (Names[i]->ordinal != -1) continue; /* already has an ordinal */
364 while (Ordinals[ordinal]) ordinal++;
365 if (ordinal >= MAX_ORDINALS)
366 {
367 Line = Names[i]->lineno;
368 fatal_error( "Too many functions defined (max %d)\n", MAX_ORDINALS );
369 }
370 Names[i]->ordinal = ordinal;
371 Ordinals[ordinal] = Names[i];
372 }
373 if (ordinal > Limit) Limit = ordinal;
374 }
375
376
377 /*******************************************************************
378 * ParseVariable
379 *
380 * Parse a variable definition.
381 */
382 static void ParseVariable( ORDDEF *odp )
383 {
384 char *endptr;
385 int *value_array;
386 int n_values;
387 int value_array_size;
388
389 char *token = GetToken();
390 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
391
392 n_values = 0;
393 value_array_size = 25;
394 value_array = xmalloc(sizeof(*value_array) * value_array_size);
395
396 while ((token = GetToken()) != NULL)
397 {
398 if (*token == ')')
399 break;
400
401 value_array[n_values++] = strtol(token, &endptr, 0);
402 if (n_values == value_array_size)
403 {
404 value_array_size += 25;
405 value_array = xrealloc(value_array,
406 sizeof(*value_array) * value_array_size);
407 }
408
409 if (endptr == NULL || *endptr != '\0')
410 fatal_error( "Expected number value, got '%s'\n", token );
411 }
412
413 if (token == NULL)
414 fatal_error( "End of file in variable declaration\n" );
415
416 odp->u.var.n_values = n_values;
417 odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values);
418 }
419
420
421 /*******************************************************************
422 * ParseExportFunction
423 *
424 * Parse a function definition.
425 */
426 static void ParseExportFunction( ORDDEF *odp )
427 {
428 char *token;
429 int i;
430
431 switch(SpecType)
432 {
433 case SPEC_WIN16:
434 if (odp->type == TYPE_STDCALL)
435 fatal_error( "'stdcall' not supported for Win16\n" );
436 if (odp->type == TYPE_VARARGS)
437 fatal_error( "'varargs' not supported for Win16\n" );
438 break;
439 case SPEC_WIN32:
440 if ((odp->type == TYPE_PASCAL) || (odp->type == TYPE_PASCAL_16))
441 fatal_error( "'pascal' not supported for Win32\n" );
442 break;
443 default:
444 break;
445 }
446
447 token = GetToken();
448 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
449
450 for (i = 0; i < sizeof(odp->u.func.arg_types)-1; i++)
451 {
452 token = GetToken();
453 if (*token == ')')
454 break;
455
456 if (!strcmp(token, "word"))
457 odp->u.func.arg_types[i] = 'w';
458 else if (!strcmp(token, "s_word"))
459 odp->u.func.arg_types[i] = 's';
460 else if (!strcmp(token, "long") || !strcmp(token, "segptr"))
461 odp->u.func.arg_types[i] = 'l';
462 else if (!strcmp(token, "ptr"))
463 odp->u.func.arg_types[i] = 'p';
464 else if (!strcmp(token, "str"))
465 odp->u.func.arg_types[i] = 't';
466 else if (!strcmp(token, "wstr"))
467 odp->u.func.arg_types[i] = 'W';
468 else if (!strcmp(token, "segstr"))
469 odp->u.func.arg_types[i] = 'T';
470 else if (!strcmp(token, "double"))
471 {
472 odp->u.func.arg_types[i++] = 'l';
473 odp->u.func.arg_types[i] = 'l';
474 }
475 else fatal_error( "Unknown variable type '%s'\n", token );
476
477 if (SpecType == SPEC_WIN32)
478 {
479 if (strcmp(token, "long") &&
480 strcmp(token, "ptr") &&
481 strcmp(token, "str") &&
482 strcmp(token, "wstr") &&
483 strcmp(token, "double"))
484 {
485 fatal_error( "Type '%s' not supported for Win32\n", token );
486 }
487 }
488 }
489 if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types)))
490 fatal_error( "Too many arguments\n" );
491
492 odp->u.func.arg_types[i] = '\0';
493 if ((odp->type == TYPE_STDCALL) && !i)
494 odp->type = TYPE_CDECL; /* stdcall is the same as cdecl for 0 args */
495 strcpy(odp->u.func.link_name, GetToken());
496 }
497
498
499 /*******************************************************************
500 * ParseEquate
501 *
502 * Parse an 'equate' definition.
503 */
504 static void ParseEquate( ORDDEF *odp )
505 {
506 char *endptr;
507
508 char *token = GetToken();
509 int value = strtol(token, &endptr, 0);
510 if (endptr == NULL || *endptr != '\0')
511 fatal_error( "Expected number value, got '%s'\n", token );
512 if (SpecType == SPEC_WIN32)
513 fatal_error( "'equate' not supported for Win32\n" );
514 odp->u.abs.value = value;
515 }
516
517
518 /*******************************************************************
519 * ParseStub
520 *
521 * Parse a 'stub' definition.
522 */
523 static void ParseStub( ORDDEF *odp )
524 {
525 odp->u.func.arg_types[0] = '\0';
526 strcpy( odp->u.func.link_name, STUB_CALLBACK );
527 }
528
529
530 /*******************************************************************
531 * ParseInterrupt
532 *
533 * Parse an 'interrupt' definition.
534 */
535 static void ParseInterrupt( ORDDEF *odp )
536 {
537 char *token;
538
539 if (SpecType == SPEC_WIN32)
540 fatal_error( "'interrupt' not supported for Win32\n" );
541
542 token = GetToken();
543 if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
544
545 token = GetToken();
546 if (*token != ')') fatal_error( "Expected ')' got '%s'\n", token );
547
548 odp->u.func.arg_types[0] = '\0';
549 strcpy( odp->u.func.link_name, GetToken() );
550 }
551
552
553 /*******************************************************************
554 * ParseExtern
555 *
556 * Parse an 'extern' definition.
557 */
558 static void ParseExtern( ORDDEF *odp )
559 {
560 if (SpecType == SPEC_WIN16) fatal_error( "'extern' not supported for Win16\n" );
561 strcpy( odp->u.ext.link_name, GetToken() );
562 }
563
564
565 /*******************************************************************
566 * ParseForward
567 *
568 * Parse a 'forward' definition.
569 */
570 static void ParseForward( ORDDEF *odp )
571 {
572 if (SpecType == SPEC_WIN16) fatal_error( "'forward' not supported for Win16\n" );
573 strcpy( odp->u.fwd.link_name, GetToken() );
574 }
575
576
577 /*******************************************************************
578 * ParseOrdinal
579 *
580 * Parse an ordinal definition.
581 */
582 static void ParseOrdinal(int ordinal)
583 {
584 char *token;
585
586 ORDDEF *odp = &EntryPoints[nb_entry_points++];
587
588 if (!(token = GetToken())) fatal_error( "Expected type after ordinal\n" );
589
590 for (odp->type = 0; odp->type < TYPE_NBTYPES; odp->type++)
591 if (TypeNames[odp->type] && !strcmp( token, TypeNames[odp->type] ))
592 break;
593
594 if (odp->type >= TYPE_NBTYPES)
595 fatal_error( "Expected type after ordinal, found '%s' instead\n", token );
596
597 if (!(token = GetToken())) fatal_error( "Expected name after type\n" );
598
599 strcpy( odp->name, token );
600 odp->lineno = Line;
601 odp->ordinal = ordinal;
602
603 switch(odp->type)
604 {
605 case TYPE_BYTE:
606 case TYPE_WORD:
607 case TYPE_LONG:
608 ParseVariable( odp );
609 break;
610 case TYPE_REGISTER:
611 ParseExportFunction( odp );
612 #ifndef __i386__
613 /* ignore Win32 'register' routines on non-Intel archs */
614 if (SpecType == SPEC_WIN32)
615 {
616 nb_entry_points--;
617 return;
618 }
619 #endif
620 break;
621 case TYPE_PASCAL_16:
622 case TYPE_PASCAL:
623 case TYPE_STDCALL:
624 case TYPE_VARARGS:
625 case TYPE_CDECL:
626 ParseExportFunction( odp );
627 break;
628 case TYPE_INTERRUPT:
629 ParseInterrupt( odp );
630 break;
631 case TYPE_ABS:
632 ParseEquate( odp );
633 break;
634 case TYPE_STUB:
635 ParseStub( odp );
636 break;
637 case TYPE_EXTERN:
638 ParseExtern( odp );
639 break;
640 case TYPE_FORWARD:
641 ParseForward( odp );
642 break;
643 default:
644 assert( 0 );
645 }
646
647 if (ordinal != -1)
648 {
649 if (ordinal >= MAX_ORDINALS) fatal_error( "Ordinal number %d too large\n", ordinal );
650 if (ordinal > Limit) Limit = ordinal;
651 if (ordinal < Base) Base = ordinal;
652 odp->ordinal = ordinal;
653 Ordinals[ordinal] = odp;
654 }
655
656 if (!strcmp( odp->name, "@" ))
657 {
658 if (ordinal == -1)
659 fatal_error( "Nameless function needs an explicit ordinal number\n" );
660 if (SpecType != SPEC_WIN32)
661 fatal_error( "Nameless functions not supported for Win16\n" );
662 odp->name[0] = 0;
663 }
664 else Names[nb_names++] = odp;
665 }
666
667
668 /*******************************************************************
669 * ParseTopLevel
670 *
671 * Parse a spec file.
672 */
673 static void ParseTopLevel(void)
674 {
675 char *token;
676
677 while ((token = GetToken()) != NULL)
678 {
679 if (strcmp(token, "name") == 0)
680 {
681 strcpy(DLLName, GetToken());
682 strupper(DLLName);
683 if (!DLLFileName[0]) sprintf( DLLFileName, "%s.DLL", DLLName );
684 }
685 else if (strcmp(token, "file") == 0)
686 {
687 strcpy(DLLFileName, GetToken());
688 strupper(DLLFileName);
689 }
690 else if (strcmp(token, "type") == 0)
691 {
692 token = GetToken();
693 if (!strcmp(token, "win16" )) SpecType = SPEC_WIN16;
694 else if (!strcmp(token, "win32" )) SpecType = SPEC_WIN32;
695 else fatal_error( "Type must be 'win16' or 'win32'\n" );
696 }
697 else if (strcmp(token, "heap") == 0)
698 {
699 token = GetToken();
700 if (!IsNumberString(token)) fatal_error( "Expected number after heap\n" );
701 DLLHeapSize = atoi(token);
702 }
703 else if (strcmp(token, "init") == 0)
704 {
705 strcpy(DLLInitFunc, GetToken());
706 if (SpecType == SPEC_WIN16)
707 fatal_error( "init cannot be used for Win16 spec files\n" );
708 if (!DLLInitFunc[0])
709 fatal_error( "Expected function name after init\n" );
710 }
711 else if (strcmp(token, "import") == 0)
712 {
713 if (nb_imports >= MAX_IMPORTS)
714 fatal_error( "Too many imports (limit %d)\n", MAX_IMPORTS );
715 if (SpecType != SPEC_WIN32)
716 fatal_error( "Imports not supported for Win16\n" );
717 DLLImports[nb_imports++] = xstrdup(GetToken());
718 }
719 else if (strcmp(token, "rsrc") == 0)
720 {
721 strcpy( rsrc_name, GetToken() );
722 strcat( rsrc_name, "_ResourceDescriptor" );
723 }
724 else if (strcmp(token, "@") == 0)
725 {
726 if (SpecType != SPEC_WIN32)
727 fatal_error( "'@' ordinals not supported for Win16\n" );
728 ParseOrdinal( -1 );
729 }
730 else if (IsNumberString(token))
731 {
732 ParseOrdinal( atoi(token) );
733 }
734 else
735 fatal_error( "Expected name, id, length or ordinal\n" );
736 }
737 }
738
739
740 /*******************************************************************
741 * StoreVariableCode
742 *
743 * Store a list of ints into a byte array.
744 */
745 static int StoreVariableCode( unsigned char *buffer, int size, ORDDEF *odp )
746 {
747 int i;
748
749 switch(size)
750 {
751 case 1:
752 for (i = 0; i < odp->u.var.n_values; i++)
753 buffer[i] = odp->u.var.values[i];
754 break;
755 case 2:
756 for (i = 0; i < odp->u.var.n_values; i++)
757 ((unsigned short *)buffer)[i] = odp->u.var.values[i];
758 break;
759 case 4:
760 for (i = 0; i < odp->u.var.n_values; i++)
761 ((unsigned int *)buffer)[i] = odp->u.var.values[i];
762 break;
763 }
764 return odp->u.var.n_values * size;
765 }
766
767
768 /*******************************************************************
769 * DumpBytes
770 *
771 * Dump a byte stream into the assembly code.
772 */
773 static void DumpBytes( FILE *outfile, const unsigned char *data, int len,
774 const char *label )
775 {
776 int i;
777
778 fprintf( outfile, "\nstatic BYTE %s[] = \n{", label );
779
780 for (i = 0; i < len; i++)
781 {
782 if (!(i & 0x0f)) fprintf( outfile, "\n " );
783 fprintf( outfile, "%d", *data++ );
784 if (i < len - 1) fprintf( outfile, ", " );
785 }
786 fprintf( outfile, "\n};\n" );
787 }
788
789
790 /*******************************************************************
791 * BuildModule16
792 *
793 * Build the in-memory representation of a 16-bit NE module, and dump it
794 * as a byte stream into the assembly code.
795 */
796 static int BuildModule16( FILE *outfile, int max_code_offset,
797 int max_data_offset )
798 {
799 int i;
800 char *buffer;
801 NE_MODULE *pModule;
802 SEGTABLEENTRY *pSegment;
803 OFSTRUCT *pFileInfo;
804 BYTE *pstr;
805 WORD *pword;
806 ET_BUNDLE *bundle = 0;
807 ET_ENTRY *entry = 0;
808
809 /* Module layout:
810 * NE_MODULE Module
811 * OFSTRUCT File information
812 * SEGTABLEENTRY Segment 1 (code)
813 * SEGTABLEENTRY Segment 2 (data)
814 * WORD[2] Resource table (empty)
815 * BYTE[2] Imported names (empty)
816 * BYTE[n] Resident names table
817 * BYTE[n] Entry table
818 */
819
820 buffer = xmalloc( 0x10000 );
821
822 pModule = (NE_MODULE *)buffer;
823 memset( pModule, 0, sizeof(*pModule) );
824 pModule->magic = IMAGE_OS2_SIGNATURE;
825 pModule->count = 1;
826 pModule->next = 0;
827 pModule->flags = NE_FFLAGS_SINGLEDATA | NE_FFLAGS_BUILTIN | NE_FFLAGS_LIBMODULE;
828 pModule->dgroup = 2;
829 pModule->heap_size = DLLHeapSize;
830 pModule->stack_size = 0;
831 pModule->ip = 0;
832 pModule->cs = 0;
833 pModule->sp = 0;
834 pModule->ss = 0;
835 pModule->seg_count = 2;
836 pModule->modref_count = 0;
837 pModule->nrname_size = 0;
838 pModule->modref_table = 0;
839 pModule->nrname_fpos = 0;
840 pModule->moveable_entries = 0;
841 pModule->alignment = 0;
842 pModule->truetype = 0;
843 pModule->os_flags = NE_OSFLAGS_WINDOWS;
844 pModule->misc_flags = 0;
845 pModule->dlls_to_init = 0;
846 pModule->nrname_handle = 0;
847 pModule->min_swap_area = 0;
848 pModule->expected_version = 0;
849 pModule->module32 = 0;
850 pModule->self = 0;
851 pModule->self_loading_sel = 0;
852
853 /* File information */
854
855 pFileInfo = (OFSTRUCT *)(pModule + 1);
856 pModule->fileinfo = (int)pFileInfo - (int)pModule;
857 memset( pFileInfo, 0, sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) );
858 pFileInfo->cBytes = sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName)
859 + strlen(DLLFileName);
860 strcpy( pFileInfo->szPathName, DLLFileName );
861 pstr = (char *)pFileInfo + pFileInfo->cBytes + 1;
862
863 #ifdef __i386__ /* FIXME: Alignment problems! */
864
865 /* Segment table */
866
867 pSegment = (SEGTABLEENTRY *)pstr;
868 pModule->seg_table = (int)pSegment - (int)pModule;
869 pSegment->filepos = 0;
870 pSegment->size = max_code_offset;
871 pSegment->flags = 0;
872 pSegment->minsize = max_code_offset;
873 pSegment->hSeg = 0;
874 pSegment++;
875
876 pModule->dgroup_entry = (int)pSegment - (int)pModule;
877 pSegment->filepos = 0;
878 pSegment->size = max_data_offset;
879 pSegment->flags = NE_SEGFLAGS_DATA;
880 pSegment->minsize = max_data_offset;
881 pSegment->hSeg = 0;
882 pSegment++;
883
884 /* Resource table */
885
886 pword = (WORD *)pSegment;
887 pModule->res_table = (int)pword - (int)pModule;
888 *pword++ = 0;
889 *pword++ = 0;
890
891 /* Imported names table */
892
893 pstr = (char *)pword;
894 pModule->import_table = (int)pstr - (int)pModule;
895 *pstr++ = 0;
896 *pstr++ = 0;
897
898 /* Resident names table */
899
900 pModule->name_table = (int)pstr - (int)pModule;
901 /* First entry is module name */
902 *pstr = strlen(DLLName );
903 strcpy( pstr + 1, DLLName );
904 pstr += *pstr + 1;
905 *(WORD *)pstr = 0;
906 pstr += sizeof(WORD);
907 /* Store all ordinals */
908 for (i = 1; i <= Limit; i++)
909 {
910 ORDDEF *odp = Ordinals[i];
911 if (!odp || !odp->name[0]) continue;
912 *pstr = strlen( odp->name );
913 strcpy( pstr + 1, odp->name );
914 strupper( pstr + 1 );
915 pstr += *pstr + 1;
916 *(WORD *)pstr = i;
917 pstr += sizeof(WORD);
918 }
919 *pstr++ = 0;
920
921 /* Entry table */
922
923 pModule->entry_table = (int)pstr - (int)pModule;
924 for (i = 1; i <= Limit; i++)
925 {
926 int selector = 0;
927 ORDDEF *odp = Ordinals[i];
928 if (!odp) continue;
929
930 switch (odp->type)
931 {
932 case TYPE_CDECL:
933 case TYPE_PASCAL:
934 case TYPE_PASCAL_16:
935 case TYPE_REGISTER:
936 case TYPE_INTERRUPT:
937 case TYPE_STUB:
938 selector = 1; /* Code selector */
939 break;
940
941 case TYPE_BYTE:
942 case TYPE_WORD:
943 case TYPE_LONG:
944 selector = 2; /* Data selector */
945 break;
946
947 case TYPE_ABS:
948 selector = 0xfe; /* Constant selector */
949 break;
950
951 default:
952 selector = 0; /* Invalid selector */
953 break;
954 }
955
956 if ( !selector )
957 continue;
958
959 if ( bundle && bundle->last+1 == i )
960 bundle->last++;
961 else
962 {
963 if ( bundle )
964 bundle->next = (char *)pstr - (char *)pModule;
965
966 bundle = (ET_BUNDLE *)pstr;
967 bundle->first = i-1;
968 bundle->last = i;
969 bundle->next = 0;
970 pstr += sizeof(ET_BUNDLE);
971 }
972
973 /* FIXME: is this really correct ?? */
974 entry = (ET_ENTRY *)pstr;
975 entry->type = 0xff; /* movable */
976 entry->flags = 3; /* exported & public data */
977 entry->segnum = selector;
978 entry->offs = odp->offset;
979 pstr += sizeof(ET_ENTRY);
980 }
981 *pstr++ = 0;
982 #endif
983
984 /* Dump the module content */
985
986 DumpBytes( outfile, (char *)pModule, (int)pstr - (int)pModule,
987 "Module" );
988 return (int)pstr - (int)pModule;
989 }
990
991
992 /*******************************************************************
993 * BuildSpec32File
994 *
995 * Build a Win32 C file from a spec file.
996 */
997 static int BuildSpec32File( FILE *outfile )
998 {
999 ORDDEF *odp;
1000 int i, fwd_size = 0, have_regs = FALSE;
1001
1002 AssignOrdinals();
1003
1004 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1005 input_file_name );
1006 fprintf( outfile, "#include \"builtin32.h\"\n\n" );
1007 fprintf( outfile, "extern const BUILTIN32_DESCRIPTOR %s_Descriptor;\n",
1008 DLLName );
1009
1010 /* Output the DLL functions prototypes */
1011
1012 for (i = 0, odp = EntryPoints; i < nb_entry_points; i++, odp++)
1013 {
1014 switch(odp->type)
1015 {
1016 case TYPE_EXTERN:
1017 fprintf( outfile, "extern void %s();\n", odp->u.ext.link_name );
1018 break;
1019 case TYPE_STDCALL:
1020 case TYPE_VARARGS:
1021 case TYPE_CDECL:
1022 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1023 break;
1024 case TYPE_FORWARD:
1025 fwd_size += strlen(odp->u.fwd.link_name) + 1;
1026 break;
1027 case TYPE_REGISTER:
1028 fprintf( outfile, "extern void __regs_%d();\n", odp->ordinal );
1029 have_regs = TRUE;
1030 break;
1031 case TYPE_STUB:
1032 fprintf( outfile, "static void __stub_%d() { BUILTIN32_Unimplemented(&%s_Descriptor,%d); }\n",
1033 odp->ordinal, DLLName, odp->ordinal );
1034 break;
1035 default:
1036 fprintf(stderr,"build: function type %d not available for Win32\n",
1037 odp->type);
1038 return -1;
1039 }
1040 }
1041
1042 /* Output LibMain function */
1043 if (DLLInitFunc[0]) fprintf( outfile, "extern void %s();\n", DLLInitFunc );
1044
1045
1046 /* Output code for all register functions */
1047
1048 if ( have_regs )
1049 {
1050 fprintf( outfile, "#ifndef __GNUC__\n" );
1051 fprintf( outfile, "static void __asm__dummy() {\n" );
1052 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1053 for (i = 0, odp = EntryPoints; i < nb_entry_points; i++, odp++)
1054 {
1055 if (odp->type != TYPE_REGISTER) continue;
1056 fprintf( outfile,
1057 "__asm__(\".align 4\\n\\t\"\n"
1058 " \".type " PREFIX "__regs_%d,@function\\n\\t\"\n"
1059 " \"" PREFIX "__regs_%d:\\n\\t\"\n"
1060 " \"call " PREFIX "CALL32_Regs\\n\\t\"\n"
1061 " \".long " PREFIX "%s\\n\\t\"\n"
1062 " \".byte %d,%d\");\n",
1063 odp->ordinal, odp->ordinal, odp->u.func.link_name,
1064 4 * strlen(odp->u.func.arg_types),
1065 4 * strlen(odp->u.func.arg_types) );
1066 }
1067 fprintf( outfile, "#ifndef __GNUC__\n" );
1068 fprintf( outfile, "}\n" );
1069 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1070 }
1071
1072 /* Output the DLL functions table */
1073
1074 fprintf( outfile, "\nstatic const ENTRYPOINT32 Functions[%d] =\n{\n",
1075 Limit - Base + 1 );
1076 for (i = Base; i <= Limit; i++)
1077 {
1078 ORDDEF *odp = Ordinals[i];
1079 if (!odp) fprintf( outfile, " 0" );
1080 else switch(odp->type)
1081 {
1082 case TYPE_EXTERN:
1083 fprintf( outfile, " %s", odp->u.ext.link_name );
1084 break;
1085 case TYPE_STDCALL:
1086 case TYPE_VARARGS:
1087 case TYPE_CDECL:
1088 fprintf( outfile, " %s", odp->u.func.link_name);
1089 break;
1090 case TYPE_STUB:
1091 fprintf( outfile, " __stub_%d", i );
1092 break;
1093 case TYPE_REGISTER:
1094 fprintf( outfile, " __regs_%d", i );
1095 break;
1096 case TYPE_FORWARD:
1097 fprintf( outfile, " (ENTRYPOINT32)\"%s\"", odp->u.fwd.link_name );
1098 break;
1099 default:
1100 return -1;
1101 }
1102 if (i < Limit) fprintf( outfile, ",\n" );
1103 }
1104 fprintf( outfile, "\n};\n\n" );
1105
1106 /* Output the DLL names table */
1107
1108 fprintf( outfile, "static const char * const FuncNames[%d] =\n{\n", nb_names );
1109 for (i = 0; i < nb_names; i++)
1110 {
1111 if (i) fprintf( outfile, ",\n" );
1112 fprintf( outfile, " \"%s\"", Names[i]->name );
1113 }
1114 fprintf( outfile, "\n};\n\n" );
1115
1116 /* Output the DLL ordinals table */
1117
1118 fprintf( outfile, "static const unsigned short FuncOrdinals[%d] =\n{\n", nb_names );
1119 for (i = 0; i < nb_names; i++)
1120 {
1121 if (i) fprintf( outfile, ",\n" );
1122 fprintf( outfile, " %d", Names[i]->ordinal - Base );
1123 }
1124 fprintf( outfile, "\n};\n\n" );
1125
1126 /* Output the DLL argument types */
1127
1128 fprintf( outfile, "static const unsigned int ArgTypes[%d] =\n{\n",
1129 Limit - Base + 1 );
1130 for (i = Base; i <= Limit; i++)
1131 {
1132 ORDDEF *odp = Ordinals[i];
1133 unsigned int j, mask = 0;
1134 if (odp &&
1135 ((odp->type == TYPE_STDCALL) || (odp->type == TYPE_CDECL) ||
1136 (odp->type == TYPE_REGISTER)))
1137 for (j = 0; odp->u.func.arg_types[j]; j++)
1138 {
1139 if (odp->u.func.arg_types[j] == 't') mask |= 1<< (j*2);
1140 if (odp->u.func.arg_types[j] == 'W') mask |= 2<< (j*2);
1141 }
1142 fprintf( outfile, " %d", mask );
1143 if (i < Limit) fprintf( outfile, ",\n" );
1144 }
1145 fprintf( outfile, "\n};\n\n" );
1146
1147 /* Output the DLL functions arguments */
1148
1149 fprintf( outfile, "static const unsigned char FuncArgs[%d] =\n{\n",
1150 Limit - Base + 1 );
1151 for (i = Base; i <= Limit; i++)
1152 {
1153 unsigned char args = 0xff;
1154 ORDDEF *odp = Ordinals[i];
1155 if (odp) switch(odp->type)
1156 {
1157 case TYPE_STDCALL:
1158 args = (unsigned char)strlen(odp->u.func.arg_types);
1159 break;
1160 case TYPE_CDECL:
1161 args = 0x80 | (unsigned char)strlen(odp->u.func.arg_types);
1162 break;
1163 case TYPE_REGISTER:
1164 args = 0x40 | (unsigned char)strlen(odp->u.func.arg_types);
1165 break;
1166 case TYPE_FORWARD:
1167 args = 0xfd;
1168 break;
1169 default:
1170 args = 0xff;
1171 break;
1172 }
1173 fprintf( outfile, " 0x%02x", args );
1174 if (i < Limit) fprintf( outfile, ",\n" );
1175 }
1176 fprintf( outfile, "\n};\n\n" );
1177
1178 /* Output the DLL imports */
1179
1180 if (nb_imports)
1181 {
1182 fprintf( outfile, "static const char * const Imports[%d] =\n{\n", nb_imports );
1183 for (i = 0; i < nb_imports; i++)
1184 {
1185 fprintf( outfile, " \"%s\"", DLLImports[i] );
1186 if (i < nb_imports-1) fprintf( outfile, ",\n" );
1187 }
1188 fprintf( outfile, "\n};\n\n" );
1189 }
1190
1191 /* Output the DLL descriptor */
1192
1193 if (rsrc_name[0]) fprintf( outfile, "extern const char %s[];\n\n", rsrc_name );
1194
1195 fprintf( outfile, "const BUILTIN32_DESCRIPTOR %s_Descriptor =\n{\n",
1196 DLLName );
1197 fprintf( outfile, " \"%s\",\n", DLLName );
1198 fprintf( outfile, " \"%s\",\n", DLLFileName );
1199 fprintf( outfile, " %d,\n", Base );
1200 fprintf( outfile, " %d,\n", Limit - Base + 1 );
1201 fprintf( outfile, " %d,\n", nb_names );
1202 fprintf( outfile, " %d,\n", nb_imports );
1203 fprintf( outfile, " %d,\n", (fwd_size + 3) & ~3 );
1204 fprintf( outfile,
1205 " Functions,\n"
1206 " FuncNames,\n"
1207 " FuncOrdinals,\n"
1208 " FuncArgs,\n"
1209 " ArgTypes,\n");
1210 fprintf( outfile, " %s,\n", nb_imports ? "Imports" : "0" );
1211 fprintf( outfile, " %s,\n", DLLInitFunc[0] ? DLLInitFunc : "0" );
1212 fprintf( outfile, " %s\n", rsrc_name[0] ? rsrc_name : "0" );
1213 fprintf( outfile, "};\n" );
1214 return 0;
1215 }
1216
1217 /*******************************************************************
1218 * Spec16TypeCompare
1219 */
1220 static int Spec16TypeCompare( const void *e1, const void *e2 )
1221 {
1222 const ORDDEF *odp1 = *(const ORDDEF **)e1;
1223 const ORDDEF *odp2 = *(const ORDDEF **)e2;
1224
1225 int type1 = (odp1->type == TYPE_CDECL) ? 0
1226 : (odp1->type == TYPE_REGISTER) ? 3
1227 : (odp1->type == TYPE_INTERRUPT) ? 4
1228 : (odp1->type == TYPE_PASCAL_16) ? 1 : 2;
1229
1230 int type2 = (odp2->type == TYPE_CDECL) ? 0
1231 : (odp2->type == TYPE_REGISTER) ? 3
1232 : (odp2->type == TYPE_INTERRUPT) ? 4
1233 : (odp2->type == TYPE_PASCAL_16) ? 1 : 2;
1234
1235 int retval = type1 - type2;
1236 if ( !retval )
1237 retval = strcmp( odp1->u.func.arg_types, odp2->u.func.arg_types );
1238
1239 return retval;
1240 }
1241
1242 /*******************************************************************
1243 * BuildSpec16File
1244 *
1245 * Build a Win16 assembly file from a spec file.
1246 */
1247 static int BuildSpec16File( FILE *outfile )
1248 {
1249 ORDDEF **type, **typelist;
1250 int i, nFuncs, nTypes;
1251 int code_offset, data_offset, module_size;
1252 unsigned char *data;
1253
1254 /* File header */
1255
1256 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1257 input_file_name );
1258 fprintf( outfile, "#define __FLATCS__ 0x%04x\n", Code_Selector );
1259 fprintf( outfile, "#include \"builtin16.h\"\n\n" );
1260
1261 data = (unsigned char *)xmalloc( 0x10000 );
1262 memset( data, 0, 16 );
1263 data_offset = 16;
1264
1265
1266 /* Build sorted list of all argument types, without duplicates */
1267
1268 typelist = (ORDDEF **)calloc( Limit+1, sizeof(ORDDEF *) );
1269
1270 for (i = nFuncs = 0; i <= Limit; i++)
1271 {
1272 ORDDEF *odp = Ordinals[i];
1273 if (!odp) continue;
1274 switch (odp->type)
1275 {
1276 case TYPE_REGISTER:
1277 case TYPE_INTERRUPT:
1278 case TYPE_CDECL:
1279 case TYPE_PASCAL:
1280 case TYPE_PASCAL_16:
1281 case TYPE_STUB:
1282 typelist[nFuncs++] = odp;
1283
1284 default:
1285 break;
1286 }
1287 }
1288
1289 qsort( typelist, nFuncs, sizeof(ORDDEF *), Spec16TypeCompare );
1290
1291 i = nTypes = 0;
1292 while ( i < nFuncs )
1293 {
1294 typelist[nTypes++] = typelist[i++];
1295 while ( i < nFuncs && Spec16TypeCompare( typelist + i, typelist + nTypes-1 ) == 0 )
1296 i++;
1297 }
1298
1299 /* Output CallFrom16 routines needed by this .spec file */
1300
1301 for ( i = 0; i < nTypes; i++ )
1302 {
1303 char profile[101];
1304
1305 sprintf( profile, "%s_%s_%s",
1306 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1307 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1308 (typelist[i]->type == TYPE_INTERRUPT) ? "intr" :
1309 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1310 typelist[i]->u.func.arg_types );
1311
1312 BuildCallFrom16Func( outfile, profile, DLLName, TRUE );
1313 }
1314
1315 /* Output the DLL functions prototypes */
1316
1317 for (i = 0; i <= Limit; i++)
1318 {
1319 ORDDEF *odp = Ordinals[i];
1320 if (!odp) continue;
1321 switch(odp->type)
1322 {
1323 case TYPE_REGISTER:
1324 case TYPE_INTERRUPT:
1325 case TYPE_CDECL:
1326 case TYPE_PASCAL:
1327 case TYPE_PASCAL_16:
1328 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1329 break;
1330 default:
1331 break;
1332 }
1333 }
1334
1335 /* Output code segment */
1336
1337 fprintf( outfile, "\nstatic struct\n{\n CALLFROM16 call[%d];\n"
1338 " ENTRYPOINT16 entry[%d];\n} Code_Segment = \n{\n {\n",
1339 nTypes, nFuncs );
1340 code_offset = 0;
1341
1342 for ( i = 0; i < nTypes; i++ )
1343 {
1344 char profile[101], *arg;
1345 int argsize = 0;
1346
1347 sprintf( profile, "%s_%s_%s",
1348 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1349 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1350 (typelist[i]->type == TYPE_INTERRUPT) ? "intr" :
1351 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1352 typelist[i]->u.func.arg_types );
1353
1354 if ( typelist[i]->type != TYPE_CDECL )
1355 for ( arg = typelist[i]->u.func.arg_types; *arg; arg++ )
1356 switch ( *arg )
1357 {
1358 case 'w': /* word */
1359 case 's': /* s_word */
1360 argsize += 2;
1361 break;
1362
1363 case 'l': /* long or segmented pointer */
1364 case 'T': /* segmented pointer to null-terminated string */
1365 case 'p': /* linear pointer */
1366 case 't': /* linear pointer to null-terminated string */
1367 argsize += 4;
1368 break;
1369 }
1370
1371 if ( typelist[i]->type == TYPE_INTERRUPT )
1372 argsize += 2;
1373
1374 fprintf( outfile, " CF16_%s( %s_CallFrom16_%s, %d, \"%s\" ),\n",
1375 ( typelist[i]->type == TYPE_REGISTER
1376 || typelist[i]->type == TYPE_INTERRUPT)? "REGS":
1377 typelist[i]->type == TYPE_PASCAL_16? "WORD" : "LONG",
1378 DLLName, profile, argsize, profile );
1379
1380 code_offset += sizeof(CALLFROM16);
1381 }
1382 fprintf( outfile, " },\n {\n" );
1383
1384 for (i = 0; i <= Limit; i++)
1385 {
1386 ORDDEF *odp = Ordinals[i];
1387 if (!odp) continue;
1388 switch (odp->type)
1389 {
1390 case TYPE_ABS:
1391 odp->offset = LOWORD(odp->u.abs.value);
1392 break;
1393
1394 case TYPE_BYTE:
1395 odp->offset = data_offset;
1396 data_offset += StoreVariableCode( data + data_offset, 1, odp);
1397 break;
1398
1399 case TYPE_WORD:
1400 odp->offset = data_offset;
1401 data_offset += StoreVariableCode( data + data_offset, 2, odp);
1402 break;
1403
1404 case TYPE_LONG:
1405 odp->offset = data_offset;
1406 data_offset += StoreVariableCode( data + data_offset, 4, odp);
1407 break;
1408
1409 case TYPE_REGISTER:
1410 case TYPE_INTERRUPT:
1411 case TYPE_CDECL:
1412 case TYPE_PASCAL:
1413 case TYPE_PASCAL_16:
1414 case TYPE_STUB:
1415 type = bsearch( &odp, typelist, nTypes, sizeof(ORDDEF *), Spec16TypeCompare );
1416 assert( type );
1417
1418 fprintf( outfile, " /* %s.%d */ ", DLLName, i );
1419 fprintf( outfile, "EP( %s, %d /* %s_%s_%s */ ),\n",
1420 odp->u.func.link_name,
1421 (type-typelist)*sizeof(CALLFROM16) -
1422 (code_offset + sizeof(ENTRYPOINT16)),
1423 (odp->type == TYPE_CDECL) ? "c" : "p",
1424 (odp->type == TYPE_REGISTER) ? "regs" :
1425 (odp->type == TYPE_INTERRUPT) ? "intr" :
1426 (odp->type == TYPE_PASCAL_16) ? "word" : "long",
1427 odp->u.func.arg_types );
1428
1429 odp->offset = code_offset;
1430 code_offset += sizeof(ENTRYPOINT16);
1431 break;
1432
1433 default:
1434 fprintf(stderr,"build: function type %d not available for Win16\n",
1435 odp->type);
1436 return -1;
1437 }
1438 }
1439
1440 fprintf( outfile, " }\n};\n" );
1441
1442 /* Output data segment */
1443
1444 DumpBytes( outfile, data, data_offset, "Data_Segment" );
1445
1446 /* Build the module */
1447
1448 module_size = BuildModule16( outfile, code_offset, data_offset );
1449
1450 /* Output the DLL descriptor */
1451
1452 if (rsrc_name[0]) fprintf( outfile, "extern const char %s[];\n\n", rsrc_name );
1453
1454 fprintf( outfile, "\nconst WIN16_DESCRIPTOR %s_Descriptor = \n{\n", DLLName );
1455 fprintf( outfile, " \"%s\",\n", DLLName );
1456 fprintf( outfile, " Module,\n" );
1457 fprintf( outfile, " sizeof(Module),\n" );
1458 fprintf( outfile, " (BYTE *)&Code_Segment,\n" );
1459 fprintf( outfile, " (BYTE *)Data_Segment,\n" );
1460 fprintf( outfile, " %s\n", rsrc_name[0] ? rsrc_name : "0" );
1461 fprintf( outfile, "};\n" );
1462
1463 return 0;
1464 }
1465
1466
1467 /*******************************************************************
1468 * BuildSpecFile
1469 *
1470 * Build an assembly file from a spec file.
1471 */
1472 static void BuildSpecFile( FILE *outfile, FILE *infile )
1473 {
1474 SpecFp = infile;
1475 ParseTopLevel();
1476
1477 switch(SpecType)
1478 {
1479 case SPEC_WIN16:
1480 BuildSpec16File( outfile );
1481 break;
1482 case SPEC_WIN32:
1483 BuildSpec32File( outfile );
1484 break;
1485 default:
1486 fatal_error( "Missing 'type' declaration\n" );
1487 }
1488 }
1489
1490
1491 /*******************************************************************
1492 * BuildCallFrom16Func
1493 *
1494 * Build a 16-bit-to-Wine callback glue function.
1495 *
1496 * The generated routines are intended to be used as argument conversion
1497 * routines to be called by the CallFrom16... core. Thus, the prototypes of
1498 * the generated routines are (see also CallFrom16):
1499 *
1500 * extern WORD WINAPI PREFIX_CallFrom16_C_word_xxx( FARPROC func, LPBYTE args );
1501 * extern LONG WINAPI PREFIX_CallFrom16_C_long_xxx( FARPROC func, LPBYTE args );
1502 * extern void WINAPI PREFIX_CallFrom16_C_regs_xxx( FARPROC func, LPBYTE args,
1503 * CONTEXT86 *context );
1504 * extern void WINAPI PREFIX_CallFrom16_C_intr_xxx( FARPROC func, LPBYTE args,
1505 * CONTEXT86 *context );
1506 *
1507 * where 'C' is the calling convention ('p' for pascal or 'c' for cdecl),
1508 * and each 'x' is an argument ('w'=word, 's'=signed word, 'l'=long,
1509 * 'p'=linear pointer, 't'=linear pointer to null-terminated string,
1510 * 'T'=segmented pointer to null-terminated string).
1511 *
1512 * The generated routines fetch the arguments from the 16-bit stack (pointed
1513 * to by 'args'); the offsets of the single argument values are computed
1514 * according to the calling convention and the argument types. Then, the
1515 * 32-bit entry point is called with these arguments.
1516 *
1517 * For register functions, the arguments (if present) are converted just
1518 * the same as for normal functions, but in addition the CONTEXT86 pointer
1519 * filled with the current register values is passed to the 32-bit routine.
1520 * (An 'intr' interrupt handler routine is treated exactly like a register
1521 * routine, except that upon return, the flags word pushed onto the stack
1522 * by the interrupt is removed by the 16-bit call stub.)
1523 *
1524 */
1525 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local )
1526 {
1527 int i, pos, argsize = 0;
1528 int short_ret = 0;
1529 int reg_func = 0;
1530 int usecdecl = 0;
1531 char *args = profile + 7;
1532 char *ret_type;
1533
1534 /* Parse function type */
1535
1536 if (!strncmp( "c_", profile, 2 )) usecdecl = 1;
1537 else if (strncmp( "p_", profile, 2 ))
1538 {
1539 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1540 return;
1541 }
1542
1543 if (!strncmp( "word_", profile + 2, 5 )) short_ret = 1;
1544 else if (!strncmp( "regs_", profile + 2, 5 )) reg_func = 1;
1545 else if (!strncmp( "intr_", profile + 2, 5 )) reg_func = 2;
1546 else if (strncmp( "long_", profile + 2, 5 ))
1547 {
1548 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1549 return;
1550 }
1551
1552 for ( i = 0; args[i]; i++ )
1553 switch ( args[i] )
1554 {
1555 case 'w': /* word */
1556 case 's': /* s_word */
1557 argsize += 2;
1558 break;
1559
1560 case 'l': /* long or segmented pointer */
1561 case 'T': /* segmented pointer to null-terminated string */
1562 case 'p': /* linear pointer */
1563 case 't': /* linear pointer to null-terminated string */
1564 argsize += 4;
1565 break;
1566 }
1567
1568 ret_type = reg_func? "void" : short_ret? "WORD" : "LONG";
1569
1570 fprintf( outfile, "typedef %s WINAPI (*proc_%s_t)( ",
1571 ret_type, profile );
1572 args = profile + 7;
1573 for ( i = 0; args[i]; i++ )
1574 {
1575 if ( i ) fprintf( outfile, ", " );
1576 switch (args[i])
1577 {
1578 case 'w': fprintf( outfile, "WORD" ); break;
1579 case 's': fprintf( outfile, "INT16" ); break;
1580 case 'l': case 'T': fprintf( outfile, "LONG" ); break;
1581 case 'p': case 't': fprintf( outfile, "LPVOID" ); break;
1582 }
1583 }
1584 if ( reg_func )
1585 fprintf( outfile, "%sstruct _CONTEXT86 *", i? ", " : "" );
1586 else if ( !i )
1587 fprintf( outfile, "void" );
1588 fprintf( outfile, " );\n" );
1589
1590 fprintf( outfile, "%s%s WINAPI %s_CallFrom16_%s( FARPROC proc, LPBYTE args%s )\n{\n",
1591 local? "static " : "", ret_type, prefix, profile,
1592 reg_func? ", struct _CONTEXT86 *context" : "" );
1593
1594 fprintf( outfile, " %s((proc_%s_t) proc) (\n",
1595 reg_func? "" : "return ", profile );
1596 args = profile + 7;
1597 pos = !usecdecl? argsize : 0;
1598 for ( i = 0; args[i]; i++ )
1599 {
1600 if ( i ) fprintf( outfile, ",\n" );
1601 fprintf( outfile, " " );
1602 switch (args[i])
1603 {
1604 case 'w': /* word */
1605 if ( !usecdecl ) pos -= 2;
1606 fprintf( outfile, "*(WORD *)(args+%d)", pos );
1607 if ( usecdecl ) pos += 2;
1608 break;
1609
1610 case 's': /* s_word */
1611 if ( !usecdecl ) pos -= 2;
1612 fprintf( outfile, "*(INT16 *)(args+%d)", pos );
1613 if ( usecdecl ) pos += 2;
1614 break;
1615
1616 case 'l': /* long or segmented pointer */
1617 case 'T': /* segmented pointer to null-terminated string */
1618 if ( !usecdecl ) pos -= 4;
1619 fprintf( outfile, "*(LONG *)(args+%d)", pos );
1620 if ( usecdecl ) pos += 4;
1621 break;
1622
1623 case 'p': /* linear pointer */
1624 case 't': /* linear pointer to null-terminated string */
1625 if ( !usecdecl ) pos -= 4;
1626 fprintf( outfile, "PTR_SEG_TO_LIN( *(SEGPTR *)(args+%d) )", pos );
1627 if ( usecdecl ) pos += 4;
1628 break;
1629
1630 default:
1631 fprintf( stderr, "Unknown arg type '%c'\n", args[i] );
1632 }
1633 }
1634 if ( reg_func )
1635 fprintf( outfile, "%s context", i? ",\n" : "" );
1636 fprintf( outfile, " );\n}\n\n" );
1637 }
1638
1639 /*******************************************************************
1640 * BuildCallTo16Func
1641 *
1642 * Build a Wine-to-16-bit callback glue function.
1643 *
1644 * Prototypes for the CallTo16 functions:
1645 * extern WORD CALLBACK PREFIX_CallTo16_word_xxx( FARPROC16 func, args... );
1646 * extern LONG CALLBACK PREFIX_CallTo16_long_xxx( FARPROC16 func, args... );
1647 *
1648 * These routines are provided solely for convenience; they simply
1649 * write the arguments onto the 16-bit stack, and call the appropriate
1650 * CallTo16... core routine.
1651 *
1652 * If you have more sophisticated argument conversion requirements than
1653 * are provided by these routines, you might as well call the core
1654 * routines by yourself.
1655 *
1656 */
1657 static void BuildCallTo16Func( FILE *outfile, char *profile, char *prefix )
1658 {
1659 char *args = profile + 5;
1660 int i, argsize = 0, short_ret = 0;
1661
1662 if (!strncmp( "word_", profile, 5 )) short_ret = 1;
1663 else if (strncmp( "long_", profile, 5 ))
1664 {
1665 fprintf( stderr, "Invalid function name '%s'.\n", profile );
1666 exit(1);
1667 }
1668
1669 fprintf( outfile, "%s %s_CallTo16_%s( FARPROC16 proc",
1670 short_ret? "WORD" : "LONG", prefix, profile );
1671 args = profile + 5;
1672 for ( i = 0; args[i]; i++ )
1673 {
1674 fprintf( outfile, ", " );
1675 switch (args[i])
1676 {
1677 case 'w': fprintf( outfile, "WORD" ); argsize += 2; break;
1678 case 'l': fprintf( outfile, "LONG" ); argsize += 4; break;
1679 }
1680 fprintf( outfile, " arg%d", i+1 );
1681 }
1682 fprintf( outfile, " )\n{\n" );
1683
1684 if ( argsize > 0 )
1685 fprintf( outfile, " LPBYTE args = (LPBYTE)CURRENT_STACK16;\n" );
1686
1687 args = profile + 5;
1688 for ( i = 0; args[i]; i++ )
1689 {
1690 switch (args[i])
1691 {
1692 case 'w': fprintf( outfile, " args -= sizeof(WORD); *(WORD" ); break;
1693 case 'l': fprintf( outfile, " args -= sizeof(LONG); *(LONG" ); break;
1694 default: fprintf( stderr, "Unexpected case '%c' in BuildCallTo16Func\n",
1695 args[i] );
1696 }
1697 fprintf( outfile, " *)args = arg%d;\n", i+1 );
1698 }
1699
1700 fprintf( outfile, " return CallTo16%s( proc, %d );\n}\n\n",
1701 short_ret? "Word" : "Long", argsize );
1702 }
1703
1704
1705
1706 /*******************************************************************
1707 * BuildCallFrom16Core
1708 *
1709 * This routine builds the core routines used in 16->32 thunks:
1710 * CallFrom16Word, CallFrom16Long, CallFrom16Register, and CallFrom16Thunk.
1711 *
1712 * These routines are intended to be called via a far call (with 32-bit
1713 * operand size) from 16-bit code. The 16-bit code stub must push %bp,
1714 * the 32-bit entry point to be called, and the argument conversion
1715 * routine to be used (see stack layout below).
1716 *
1717 * The core routine completes the STACK16FRAME on the 16-bit stack and
1718 * switches to the 32-bit stack. Then, the argument conversion routine
1719 * is called; it gets passed the 32-bit entry point and a pointer to the
1720 * 16-bit arguments (on the 16-bit stack) as parameters. (You can either
1721 * use conversion routines automatically generated by BuildCallFrom16,
1722 * or write your own for special purposes.)
1723 *
1724 * The conversion routine must call the 32-bit entry point, passing it
1725 * the converted arguments, and return its return value to the core.
1726 * After the conversion routine has returned, the core switches back
1727 * to the 16-bit stack, converts the return value to the DX:AX format
1728 * (CallFrom16Long), and returns to the 16-bit call stub. All parameters,
1729 * including %bp, are popped off the stack.
1730 *
1731 * The 16-bit call stub now returns to the caller, popping the 16-bit
1732 * arguments if necessary (pascal calling convention).
1733 *
1734 * In the case of a 'register' function, CallFrom16Register fills a
1735 * CONTEXT86 structure with the values all registers had at the point
1736 * the first instruction of the 16-bit call stub was about to be
1737 * executed. A pointer to this CONTEXT86 is passed as third parameter
1738 * to the argument conversion routine, which typically passes it on
1739 * to the called 32-bit entry point.
1740 *
1741 * CallFrom16Thunk is a special variant used by the implementation of
1742 * the Win95 16->32 thunk functions C16ThkSL and C16ThkSL01 and is
1743 * implemented as follows:
1744 * On entry, the EBX register is set up to contain a flat pointer to the
1745 * 16-bit stack such that EBX+22 points to the first argument.
1746 * Then, the entry point is called, while EBP is set up to point
1747 * to the return address (on the 32-bit stack).
1748 * The called function returns with CX set to the number of bytes
1749 * to be popped of the caller's stack.
1750 *
1751 * Stack layout upon entry to the core routine (STACK16FRAME):
1752 * ... ...
1753 * (sp+24) word first 16-bit arg
1754 * (sp+22) word cs
1755 * (sp+20) word ip
1756 * (sp+18) word bp
1757 * (sp+14) long 32-bit entry point (reused for Win16 mutex recursion count)
1758 * (sp+12) word ip of actual entry point (necessary for relay debugging)
1759 * (sp+8) long relay (argument conversion) function entry point
1760 * (sp+4) long cs of 16-bit entry point
1761 * (sp) long ip of 16-bit entry point
1762 *
1763 * Added on the stack:
1764 * (sp-2) word saved gs
1765 * (sp-4) word saved fs
1766 * (sp-6) word saved es
1767 * (sp-8) word saved ds
1768 * (sp-12) long saved ebp
1769 * (sp-16) long saved ecx
1770 * (sp-20) long saved edx
1771 * (sp-24) long saved previous stack
1772 */
1773 static void BuildCallFrom16Core( FILE *outfile, int reg_func, int thunk, int short_ret )
1774 {
1775 char *name = thunk? "Thunk" : reg_func? "Register" : short_ret? "Word" : "Long";
1776
1777 /* Function header */
1778 fprintf( outfile, "\n\t.align 4\n" );
1779 #ifdef USE_STABS
1780 fprintf( outfile, ".stabs \"CallFrom16%s:F1\",36,0,0," PREFIX "CallFrom16%s\n",
1781 name, name);
1782 #endif
1783 fprintf( outfile, "\t.type " PREFIX "CallFrom16%s,@function\n", name );
1784 fprintf( outfile, "\t.globl " PREFIX "CallFrom16%s\n", name );
1785 fprintf( outfile, PREFIX "CallFrom16%s:\n", name );
1786
1787 /* Create STACK16FRAME (except STACK32FRAME link) */
1788 fprintf( outfile, "\tpushw %%gs\n" );
1789 fprintf( outfile, "\tpushw %%fs\n" );
1790 fprintf( outfile, "\tpushw %%es\n" );
1791 fprintf( outfile, "\tpushw %%ds\n" );
1792 fprintf( outfile, "\tpushl %%ebp\n" );
1793 fprintf( outfile, "\tpushl %%ecx\n" );
1794 fprintf( outfile, "\tpushl %%edx\n" );
1795
1796 /* Save original EFlags register */
1797 fprintf( outfile, "\tpushfl\n" );
1798
1799 if ( UsePIC )
1800 {
1801 /* Get Global Offset Table into %ecx */
1802 fprintf( outfile, "\tcall .LCallFrom16%s.getgot1\n", name );
1803 fprintf( outfile, ".LCallFrom16%s.getgot1:\n", name );
1804 fprintf( outfile, "\tpopl %%ecx\n" );
1805 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot1], %%ecx\n", name );
1806 }
1807
1808 /* Load 32-bit segment registers */
1809 fprintf( outfile, "\tmovw $0x%04x, %%dx\n", Data_Selector );
1810 #ifdef __svr4__
1811 fprintf( outfile, "\tdata16\n");
1812 #endif
1813 fprintf( outfile, "\tmovw %%dx, %%ds\n" );
1814 #ifdef __svr4__
1815 fprintf( outfile, "\tdata16\n");
1816 #endif
1817 fprintf( outfile, "\tmovw %%dx, %%es\n" );
1818
1819 if ( UsePIC )
1820 {
1821 fprintf( outfile, "\tmovl " PREFIX "SYSLEVEL_Win16CurrentTeb@GOT(%%ecx), %%edx\n" );
1822 fprintf( outfile, "\tmovw (%%edx), %%fs\n" );
1823 }
1824 else
1825 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb, %%fs\n" );
1826
1827 /* Get address of ldt_copy array into %ecx */
1828 if ( UsePIC )
1829 fprintf( outfile, "\tmovl " PREFIX "ldt_copy@GOT(%%ecx), %%ecx\n" );
1830 else
1831 fprintf( outfile, "\tmovl $" PREFIX "ldt_copy, %%ecx\n" );
1832
1833 /* Translate STACK16FRAME base to flat offset in %edx */
1834 fprintf( outfile, "\tmovw %%ss, %%dx\n" );
1835 fprintf( outfile, "\tandl $0xfff8, %%edx\n" );
1836 fprintf( outfile, "\tmovl (%%ecx,%%edx), %%edx\n" );
1837 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
1838 fprintf( outfile, "\tleal (%%ebp,%%edx), %%edx\n" );
1839
1840 /* Get saved flags into %ecx */
1841 fprintf( outfile, "\tpopl %%ecx\n" );
1842
1843 /* Get the 32-bit stack pointer from the TEB and complete STACK16FRAME */
1844 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d), %%ebp\n", STACKOFFSET );
1845 fprintf( outfile, "\tpushl %%ebp\n" );
1846
1847 /* Switch stacks */
1848 #ifdef __svr4__
1849 fprintf( outfile,"\tdata16\n");
1850 #endif
1851 fprintf( outfile, "\t.byte 0x64\n\tmovw %%ss, (%d)\n", STACKOFFSET + 2 );
1852 fprintf( outfile, "\t.byte 0x64\n\tmovw %%sp, (%d)\n", STACKOFFSET );
1853 fprintf( outfile, "\tpushl %%ds\n" );
1854 fprintf( outfile, "\tpopl %%ss\n" );
1855 fprintf( outfile, "\tmovl %%ebp, %%esp\n" );
1856 fprintf( outfile, "\taddl $%d, %%ebp\n", STRUCTOFFSET(STACK32FRAME, ebp) );
1857
1858
1859 /* At this point:
1860 STACK16FRAME is completely set up
1861 DS, ES, SS: flat data segment
1862 FS: current TEB
1863 ESP: points to last STACK32FRAME
1864 EBP: points to ebp member of last STACK32FRAME
1865 EDX: points to current STACK16FRAME
1866 ECX: contains saved flags
1867 all other registers: unchanged */
1868
1869 /* Special case: C16ThkSL stub */
1870 if ( thunk )
1871 {
1872 /* Set up registers as expected and call thunk */
1873 fprintf( outfile, "\tleal %d(%%edx), %%ebx\n", sizeof(STACK16FRAME)-22 );
1874 fprintf( outfile, "\tleal -4(%%esp), %%ebp\n" );
1875
1876 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(entry_point) );
1877
1878 /* Switch stack back */
1879 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
1880 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
1881 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
1882
1883 /* Restore registers and return directly to caller */
1884 fprintf( outfile, "\taddl $8, %%esp\n" );
1885 fprintf( outfile, "\tpopl %%ebp\n" );
1886 fprintf( outfile, "\tpopw %%ds\n" );
1887 fprintf( outfile, "\tpopw %%es\n" );
1888 fprintf( outfile, "\tpopw %%fs\n" );
1889 fprintf( outfile, "\tpopw %%gs\n" );
1890 fprintf( outfile, "\taddl $20, %%esp\n" );
1891
1892 fprintf( outfile, "\txorb %%ch, %%ch\n" );
1893 fprintf( outfile, "\tpopl %%ebx\n" );
1894 fprintf( outfile, "\taddw %%cx, %%sp\n" );
1895 fprintf( outfile, "\tpush %%ebx\n" );
1896
1897 fprintf( outfile, "\t.byte 0x66\n" );
1898 fprintf( outfile, "\tlret\n" );
1899
1900 return;
1901 }
1902
1903
1904 /* Build register CONTEXT */
1905 if ( reg_func )
1906 {
1907 fprintf( outfile, "\tsubl $%d, %%esp\n", sizeof(CONTEXT86) );
1908
1909 fprintf( outfile, "\tmovl %%ecx, %d(%%esp)\n", CONTEXTOFFSET(EFlags) );
1910
1911 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eax) );
1912 fprintf( outfile, "\tmovl %%ebx, %d(%%esp)\n", CONTEXTOFFSET(Ebx) );
1913 fprintf( outfile, "\tmovl %%esi, %d(%%esp)\n", CONTEXTOFFSET(Esi) );
1914 fprintf( outfile, "\tmovl %%edi, %d(%%esp)\n", CONTEXTOFFSET(Edi) );
1915
1916 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ebp) );
1917 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ebp) );
1918 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ecx) );
1919 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ecx) );
1920 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(edx) );
1921 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Edx) );
1922
1923 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ds) );
1924 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegDs) );
1925 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(es) );
1926 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegEs) );
1927 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(fs) );
1928 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegFs) );
1929 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(gs) );
1930 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegGs) );
1931
1932 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(cs) );
1933 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegCs) );
1934 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ip) );
1935 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eip) );
1936
1937 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET+2 );
1938 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegSs) );
1939 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET );
1940 fprintf( outfile, "\taddl $%d, %%eax\n", STACK16OFFSET(ip) );
1941 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Esp) );
1942 #if 0
1943 fprintf( outfile, "\tfsave %d(%%esp)\n", CONTEXTOFFSET(FloatSave) );
1944 #endif
1945
1946 /* Push address of CONTEXT86 structure -- popped by the relay routine */
1947 fprintf( outfile, "\tpushl %%esp\n" );
1948 }
1949
1950
1951 /* Print debug info before call */
1952 if ( debugging )
1953 {
1954 if ( UsePIC )
1955 {
1956 fprintf( outfile, "\tpushl %%ebx\n" );
1957
1958 /* Get Global Offset Table into %ebx (for PLT call) */
1959 fprintf( outfile, "\tcall .LCallFrom16%s.getgot2\n", name );
1960 fprintf( outfile, ".LCallFrom16%s.getgot2:\n", name );
1961 fprintf( outfile, "\tpopl %%ebx\n" );
1962 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot2], %%ebx\n", name );
1963 }
1964
1965 fprintf( outfile, "\tpushl %%edx\n" );
1966 if ( reg_func )
1967 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
1968 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
1969 else
1970 fprintf( outfile, "\tpushl $0\n" );
1971
1972 if ( UsePIC )
1973 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16@PLT\n ");
1974 else
1975 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16\n ");
1976
1977 fprintf( outfile, "\tpopl %%edx\n" );
1978 fprintf( outfile, "\tpopl %%edx\n" );
1979
1980 if ( UsePIC )
1981 fprintf( outfile, "\tpopl %%ebx\n" );
1982 }
1983
1984 /* Call relay routine (which will call the API entry point) */
1985 fprintf( outfile, "\tleal %d(%%edx), %%eax\n", sizeof(STACK16FRAME) );
1986 fprintf( outfile, "\tpushl %%eax\n" );
1987 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK16OFFSET(entry_point) );
1988 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(relay) );
1989
1990 /* Print debug info after call */
1991 if ( debugging )
1992 {
1993 if ( UsePIC )
1994 {
1995 fprintf( outfile, "\tpushl %%ebx\n" );
1996
1997 /* Get Global Offset Table into %ebx (for PLT call) */
1998 fprintf( outfile, "\tcall .LCallFrom16%s.getgot3\n", name );
1999 fprintf( outfile, ".LCallFrom16%s.getgot3:\n", name );
2000 fprintf( outfile, "\tpopl %%ebx\n" );
2001 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot3], %%ebx\n", name );
2002 }
2003
2004 fprintf( outfile, "\tpushl %%eax\n" );
2005 if ( reg_func )
2006 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
2007 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
2008 else
2009 fprintf( outfile, "\tpushl $0\n" );
2010
2011 if ( UsePIC )
2012 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret@PLT\n ");
2013 else
2014 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret\n ");
2015
2016 fprintf( outfile, "\tpopl %%eax\n" );
2017 fprintf( outfile, "\tpopl %%eax\n" );
2018
2019 if ( UsePIC )
2020 fprintf( outfile, "\tpopl %%ebx\n" );
2021 }
2022
2023
2024 if ( reg_func )
2025 {
2026 fprintf( outfile, "\tmovl %%esp, %%ebx\n" );
2027
2028 /* Switch stack back */
2029 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2030 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2031 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2032
2033 /* Get return address to CallFrom16 stub */
2034 fprintf( outfile, "\taddw $%d, %%sp\n", STACK16OFFSET(callfrom_ip)-4 );
2035 fprintf( outfile, "\tpopl %%eax\n" );
2036 fprintf( outfile, "\tpopl %%edx\n" );
2037
2038 /* Restore all registers from CONTEXT */
2039 fprintf( outfile, "\tmovw %d(%%ebx), %%ss\n", CONTEXTOFFSET(SegSs) );
2040 fprintf( outfile, "\tmovl %d(%%ebx), %%esp\n", CONTEXTOFFSET(Esp) );
2041 fprintf( outfile, "\taddl $4, %%esp\n" ); /* room for final return address */
2042
2043 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(SegCs) );
2044 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(Eip) );
2045 fprintf( outfile, "\tpushl %%edx\n" );
2046 fprintf( outfile, "\tpushl %%eax\n" );
2047 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(EFlags) );
2048 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(SegDs) );
2049
2050 fprintf( outfile, "\tmovw %d(%%ebx), %%es\n", CONTEXTOFFSET(SegEs) );
2051 fprintf( outfile, "\tmovw %d(%%ebx), %%fs\n", CONTEXTOFFSET(SegFs) );
2052 fprintf( outfile, "\tmovw %d(%%ebx), %%gs\n", CONTEXTOFFSET(SegGs) );
2053
2054 fprintf( outfile, "\tmovl %d(%%ebx), %%ebp\n", CONTEXTOFFSET(Ebp) );
2055 fprintf( outfile, "\tmovl %d(%%ebx), %%esi\n", CONTEXTOFFSET(Esi) );
2056 fprintf( outfile, "\tmovl %d(%%ebx), %%edi\n", CONTEXTOFFSET(Edi) );
2057 fprintf( outfile, "\tmovl %d(%%ebx), %%eax\n", CONTEXTOFFSET(Eax) );
2058 fprintf( outfile, "\tmovl %d(%%ebx), %%edx\n", CONTEXTOFFSET(Edx) );
2059 fprintf( outfile, "\tmovl %d(%%ebx), %%ecx\n", CONTEXTOFFSET(Ecx) );
2060 fprintf( outfile, "\tmovl %d(%%ebx), %%ebx\n", CONTEXTOFFSET(Ebx) );
2061
2062 fprintf( outfile, "\tpopl %%ds\n" );
2063 fprintf( outfile, "\tpopfl\n" );
2064 fprintf( outfile, "\tlret\n" );
2065 }
2066 else
2067 {
2068 /* Switch stack back */
2069 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2070 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2071 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2072
2073 /* Restore registers */
2074 fprintf( outfile, "\tpopl %%edx\n" );
2075 fprintf( outfile, "\tpopl %%ecx\n" );
2076 fprintf( outfile, "\tpopl %%ebp\n" );
2077 fprintf( outfile, "\tpopw %%ds\n" );
2078 fprintf( outfile, "\tpopw %%es\n" );
2079 fprintf( outfile, "\tpopw %%fs\n" );
2080 fprintf( outfile, "\tpopw %%gs\n" );
2081
2082 /* Prepare return value and set flags accordingly */
2083 if ( !short_ret )
2084 fprintf( outfile, "\tshldl $16, %%eax, %%edx\n" );
2085 fprintf( outfile, "\torl %%eax, %%eax\n" );
2086
2087 /* Return to return stub which will return to caller */
2088 fprintf( outfile, "\tlret $12\n" );
2089 }
2090 }
2091
2092
2093 /*******************************************************************
2094 * BuildCallTo16Core
2095 *
2096 * This routine builds the core routines used in 32->16 thunks:
2097 *
2098 * extern void CALLBACK CallTo16Word( SEGPTR target, int nb_args );
2099 * extern void CALLBACK CallTo16Long( SEGPTR target, int nb_args );
2100 * extern void CALLBACK CallTo16RegisterShort( const CONTEXT86 *context, int nb_args );
2101 * extern void CALLBACK CallTo16RegisterLong ( const CONTEXT86 *context, int nb_args );
2102 *
2103 * These routines can be called directly from 32-bit code.
2104 *
2105 * All routines expect that the 16-bit stack contents (arguments) were
2106 * already set up by the caller; nb_args must contain the number of bytes
2107 * to be conserved. The 16-bit SS:SP will be set accordinly.
2108 *
2109 * All other registers are either taken from the CONTEXT86 structure
2110 * or else set to default values. The target routine address is either
2111 * given directly or taken from the CONTEXT86.
2112 *
2113 * If you want to call a 16-bit routine taking only standard argument types
2114 * (WORD and LONG), you can also have an appropriate argument conversion
2115 * stub automatically generated (see BuildCallTo16); you'd then call this
2116 * stub, which in turn would prepare the 16-bit stack and call the appropiate
2117 * core routine.
2118 *
2119 */
2120
2121 static void BuildCallTo16Core( FILE *outfile, int short_ret, int reg_func )
2122 {
2123 char *name = reg_func == 2 ? "RegisterLong" :
2124 reg_func == 1 ? "RegisterShort" :
2125 short_ret? "Word" : "Long";
2126
2127 /* Function header */
2128 fprintf( outfile, "\n\t.align 4\n" );
2129 #ifdef USE_STABS
2130 fprintf( outfile, ".stabs \"CallTo16%s:F1\",36,0,0," PREFIX "CallTo16%s\n",
2131 name, name);
2132 #endif
2133 fprintf( outfile, "\t.globl " PREFIX "CallTo16%s\n", name );
2134 fprintf( outfile, PREFIX "CallTo16%s:\n", name );
2135
2136 /* Function entry sequence */
2137 fprintf( outfile, "\tpushl %%ebp\n" );
2138 fprintf( outfile, "\tmovl %%esp, %%ebp\n" );
2139
2140 /* Save the 32-bit registers */
2141 fprintf( outfile, "\tpushl %%ebx\n" );
2142 fprintf( outfile, "\tpushl %%ecx\n" );
2143 fprintf( outfile, "\tpushl %%edx\n" );
2144 fprintf( outfile, "\tpushl %%esi\n" );
2145 fprintf( outfile, "\tpushl %%edi\n" );
2146
2147 if ( UsePIC )
2148 {
2149 /* Get Global Offset Table into %ebx */
2150 fprintf( outfile, "\tcall .LCallTo16%s.getgot1\n", name );
2151 fprintf( outfile, ".LCallTo16%s.getgot1:\n", name );
2152 fprintf( outfile, "\tpopl %%ebx\n" );
2153 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot1], %%ebx\n", name );
2154 }
2155
2156 /* Enter Win16 Mutex */
2157 if ( UsePIC )
2158 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock@PLT\n" );
2159 else
2160 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock\n" );
2161
2162 /* Print debugging info */
2163 if (debugging)
2164 {
2165 /* Push flags, number of arguments, and target */
2166 fprintf( outfile, "\tpushl $%d\n", reg_func );
2167 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2168 fprintf( outfile, "\tpushl 8(%%ebp)\n" );
2169
2170 if ( UsePIC )
2171 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16@PLT\n" );
2172 else
2173 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16\n" );
2174
2175 fprintf( outfile, "\taddl $12, %%esp\n" );
2176 }
2177
2178 /* Get return address */
2179 if ( UsePIC )
2180 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr@GOTOFF(%%ebx), %%ecx\n" );
2181 else
2182 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr, %%ecx\n" );
2183
2184 /* Call the actual CallTo16 routine (simulate a lcall) */
2185 fprintf( outfile, "\tpushl %%cs\n" );
2186 fprintf( outfile, "\tcall .LCallTo16%s\n", name );
2187
2188 /* Convert and push return value */
2189 if ( short_ret )
2190 {
2191 fprintf( outfile, "\tmovzwl %%ax, %%eax\n" );
2192 fprintf( outfile, "\tpushl %%eax\n" );
2193 }
2194 else if ( reg_func != 2 )
2195 {
2196 fprintf( outfile, "\tshll $16,%%edx\n" );
2197 fprintf( outfile, "\tmovw %%ax,%%dx\n" );
2198 fprintf( outfile, "\tpushl %%edx\n" );
2199 }
2200 else
2201 fprintf( outfile, "\tpushl %%eax\n" );
2202
2203 if ( UsePIC )
2204 {
2205 /* Get Global Offset Table into %ebx (might have been overwritten) */
2206 fprintf( outfile, "\tcall .LCallTo16%s.getgot2\n", name );
2207 fprintf( outfile, ".LCallTo16%s.getgot2:\n", name );
2208 fprintf( outfile, "\tpopl %%ebx\n" );
2209 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot2], %%ebx\n", name );
2210 }
2211
2212 /* Print debugging info */
2213 if (debugging)
2214 {
2215 if ( UsePIC )
2216 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret@PLT\n" );
2217 else
2218 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret\n" );
2219 }
2220
2221 /* Leave Win16 Mutex */
2222 if ( UsePIC )
2223 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock@PLT\n" );
2224 else
2225 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock\n" );
2226
2227 /* Get return value */
2228 fprintf( outfile, "\tpopl %%eax\n" );
2229
2230 /* Restore the 32-bit registers */
2231 fprintf( outfile, "\tpopl %%edi\n" );
2232 fprintf( outfile, "\tpopl %%esi\n" );
2233 fprintf( outfile, "\tpopl %%edx\n" );
2234 fprintf( outfile, "\tpopl %%ecx\n" );
2235 fprintf( outfile, "\tpopl %%ebx\n" );
2236
2237 /* Function exit sequence */
2238 fprintf( outfile, "\tpopl %%ebp\n" );
2239 fprintf( outfile, "\tret $8\n" );
2240
2241
2242 /* Start of the actual CallTo16 routine */
2243
2244 fprintf( outfile, ".LCallTo16%s:\n", name );
2245
2246 /* Complete STACK32FRAME */
2247 fprintf( outfile, "\t.byte 0x64\n\tpushl (%d)\n", STACKOFFSET );
2248 fprintf( outfile, "\tmovl %%esp,%%edx\n" );
2249
2250 /* Switch to the 16-bit stack */
2251 #ifdef __svr4__
2252 fprintf( outfile,"\tdata16\n");
2253 #endif
2254 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2);
2255 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET );
2256 fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET );
2257
2258 /* Make %bp point to the previous stackframe (built by CallFrom16) */
2259 fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" );
2260 fprintf( outfile, "\tleal %d(%%ebp),%%ebp\n", STACK16OFFSET(bp) );
2261
2262 /* Add the specified offset to the new sp */
2263 fprintf( outfile, "\tsubw %d(%%edx), %%sp\n", STACK32OFFSET(nb_args) );
2264
2265 /* Push the return address
2266 * With sreg suffix, we push 16:16 address (normal lret)
2267 * With lreg suffix, we push 16:32 address (0x66 lret, for KERNEL32_45)
2268 */
2269 if (reg_func != 2)
2270 fprintf( outfile, "\tpushl %%ecx\n" );
2271 else
2272 {
2273 fprintf( outfile, "\tshldl $16, %%ecx, %%eax\n" );
2274 fprintf( outfile, "\tpushw $0\n" );
2275 fprintf( outfile, "\tpushw %%ax\n" );
2276 fprintf( outfile, "\tpushw $0\n" );
2277 fprintf( outfile, "\tpushw %%cx\n" );
2278 }
2279
2280 if (reg_func)
2281 {
2282 /* Push the called routine address */
2283 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", STACK32OFFSET(target) );
2284 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegCs) );
2285 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(Eip) );
2286
2287 /* Get the registers */
2288 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegDs) );
2289 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegEs) );
2290 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2291 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegFs) );
2292 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2293 fprintf( outfile, "\tmovl %d(%%edx),%%ebp\n", CONTEXTOFFSET(Ebp) );
2294 fprintf( outfile, "\tmovl %d(%%edx),%%esi\n", CONTEXTOFFSET(Esi) );
2295 fprintf( outfile, "\tmovl %d(%%edx),%%edi\n", CONTEXTOFFSET(Edi) );
2296 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(Eax) );
2297 fprintf( outfile, "\tmovl %d(%%edx),%%ebx\n", CONTEXTOFFSET(Ebx) );
2298 fprintf( outfile, "\tmovl %d(%%edx),%%ecx\n", CONTEXTOFFSET(Ecx) );
2299 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", CONTEXTOFFSET(Edx) );
2300
2301 /* Get the 16-bit ds */
2302 fprintf( outfile, "\tpopw %%ds\n" );
2303 }
2304 else /* not a register function */
2305 {
2306 /* Push the called routine address */
2307 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK32OFFSET(target) );
2308
2309 /* Set %fs to the value saved by the last CallFrom16 */
2310 fprintf( outfile, "\tmovw %d(%%ebp),%%ax\n", STACK16OFFSET(fs)-STACK16OFFSET(bp) );
2311 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2312
2313 /* Set %ds and %es (and %ax just in case) equal to %ss */
2314 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2315 fprintf( outfile, "\tmovw %%ax,%%ds\n" );
2316 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2317 }
2318
2319 /* Jump to the called routine */
2320 fprintf( outfile, "\t.byte 0x66\n" );
2321 fprintf( outfile, "\tlret\n" );
2322 }
2323
2324 /*******************************************************************
2325 * BuildRet16Func
2326 *
2327 * Build the return code for 16-bit callbacks
2328 */
2329 static void BuildRet16Func( FILE *outfile )
2330 {
2331 /*
2332 * Note: This must reside in the .data section to allow
2333 * run-time relocation of the SYSLEVEL_Win16CurrentTeb symbol
2334 */
2335
2336 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_Ret\n" );
2337 fprintf( outfile, PREFIX "CallTo16_Ret:\n" );
2338
2339 /* Restore 32-bit segment registers */
2340
2341 fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector );
2342 #ifdef __svr4__
2343 fprintf( outfile, "\tdata16\n");
2344 #endif
2345 fprintf( outfile, "\tmovw %%bx,%%ds\n" );
2346 #ifdef __svr4__
2347 fprintf( outfile, "\tdata16\n");
2348 #endif
2349 fprintf( outfile, "\tmovw %%bx,%%es\n" );
2350
2351 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb,%%fs\n" );
2352
2353 /* Restore the 32-bit stack */
2354
2355 #ifdef __svr4__
2356 fprintf( outfile, "\tdata16\n");
2357 #endif
2358 fprintf( outfile, "\tmovw %%bx,%%ss\n" );
2359 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%esp\n", STACKOFFSET );
2360 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2361
2362 /* Return to caller */
2363
2364 fprintf( outfile, "\tlret\n" );
2365
2366 /* Declare the return address variable */
2367
2368 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_RetAddr\n" );
2369 fprintf( outfile, PREFIX "CallTo16_RetAddr:\t.long 0\n" );
2370 }
2371
2372 /*******************************************************************
2373 * BuildCallTo32CBClient
2374 *
2375 * Call a CBClient relay stub from 32-bit code (KERNEL.620).
2376 *
2377 * Since the relay stub is itself 32-bit, this should not be a problem;
2378 * unfortunately, the relay stubs are expected to switch back to a
2379 * 16-bit stack (and 16-bit code) after completion :-(
2380 *
2381 * This would conflict with our 16- vs. 32-bit stack handling, so
2382 * we simply switch *back* to our 32-bit stack before returning to
2383 * the caller ...
2384 *
2385 * The CBClient relay stub expects to be called with the following
2386 * 16-bit stack layout, and with ebp and ebx pointing into the 16-bit
2387 * stack at the designated places:
2388 *
2389 * ...
2390 * (ebp+14) original arguments to the callback routine
2391 * (ebp+10) far return address to original caller
2392 * (ebp+6) Thunklet target address
2393 * (ebp+2) Thunklet relay ID code
2394 * (ebp) BP (saved by CBClientGlueSL)
2395 * (ebp-2) SI (saved by CBClientGlueSL)
2396 * (ebp-4) DI (saved by CBClientGlueSL)
2397 * (ebp-6) DS (saved by CBClientGlueSL)
2398 *
2399 * ... buffer space used by the 16-bit side glue for temp copies
2400 *
2401 * (ebx+4) far return address to 16-bit side glue code
2402 * (ebx) saved 16-bit ss:sp (pointing to ebx+4)
2403 *
2404 * The 32-bit side glue code accesses both the original arguments (via ebp)
2405 * and the temporary copies prepared by the 16-bit side glue (via ebx).
2406 * After completion, the stub will load ss:sp from the buffer at ebx
2407 * and perform a far return to 16-bit code.
2408 *
2409 * To trick the relay stub into returning to us, we replace the 16-bit
2410 * return address to the glue code by a cs:ip pair pointing to our
2411 * return entry point (the original return address is saved first).
2412 * Our return stub thus called will then reload the 32-bit ss:esp and
2413 * return to 32-bit code (by using and ss:esp value that we have also
2414 * pushed onto the 16-bit stack before and a cs:eip values found at
2415 * that position on the 32-bit stack). The ss:esp to be restored is
2416 * found relative to the 16-bit stack pointer at:
2417 *
2418 * (ebx-4) ss (flat)
2419 * (ebx-8) sp (32-bit stack pointer)
2420 *
2421 * The second variant of this routine, CALL32_CBClientEx, which is used
2422 * to implement KERNEL.621, has to cope with yet another problem: Here,
2423 * the 32-bit side directly returns to the caller of the CBClient thunklet,
2424 * restoring registers saved by CBClientGlueSL and cleaning up the stack.
2425 * As we have to return to our 32-bit code first, we have to adapt the
2426 * layout of our temporary area so as to include values for the registers
2427 * that are to be restored, and later (in the implementation of KERNEL.621)
2428 * we *really* restore them. The return stub restores DS, DI, SI, and BP
2429 * from the stack, skips the next 8 bytes (CBClient relay code / target),
2430 * and then performs a lret NN, where NN is the number of arguments to be
2431 * removed. Thus, we prepare our temporary area as follows:
2432 *
2433 * (ebx+22) 16-bit cs (this segment)
2434 * (ebx+20) 16-bit ip ('16-bit' return entry point)
2435 * (ebx+16) 32-bit ss (flat)
2436 * (ebx+12) 32-bit sp (32-bit stack pointer)
2437 * (ebx+10) 16-bit bp (points to ebx+24)
2438 * (ebx+8) 16-bit si (ignored)
2439 * (ebx+6) 16-bit di (ignored)
2440 * (ebx+4) 16-bit ds (we actually use the flat DS here)
2441 * (ebx+2) 16-bit ss (16-bit stack segment)
2442 * (ebx+0) 16-bit sp (points to ebx+4)
2443 *
2444 * Note that we ensure that DS is not changed and remains the flat segment,
2445 * and the 32-bit stack pointer our own return stub needs fits just
2446 * perfectly into the 8 bytes that are skipped by the Windows stub.
2447 * One problem is that we have to determine the number of removed arguments,
2448 * as these have to be really removed in KERNEL.621. Thus, the BP value
2449 * that we place in the temporary area to be restored, contains the value
2450 * that SP would have if no arguments were removed. By comparing the actual
2451 * value of SP with this value in our return stub we can compute the number
2452 * of removed arguments. This is then returned to KERNEL.621.
2453 *
2454 * The stack layout of this function:
2455 * (ebp+20) nArgs pointer to variable receiving nr. of args (Ex only)
2456 * (ebp+16) esi pointer to caller's esi value
2457 * (ebp+12) arg ebp value to be set for relay stub
2458 * (ebp+8) func CBClient relay stub address
2459 * (ebp+4) ret addr
2460 * (ebp) ebp
2461 */
2462 static void BuildCallTo32CBClient( FILE *outfile, BOOL isEx )
2463 {
2464 char *name = isEx? "CBClientEx" : "CBClient";
2465 int size = isEx? 24 : 12;
2466
2467 /* Function header */
2468
2469 fprintf( outfile, "\n\t.align 4\n" );
2470 #ifdef USE_STABS
2471 fprintf( outfile, ".stabs \"CALL32_%s:F1\",36,0,0," PREFIX "CALL32_%s\n",
2472 name, name );
2473 #endif
2474 fprintf( outfile, "\t.globl " PREFIX "CALL32_%s\n", name );
2475 fprintf( outfile, PREFIX "CALL32_%s:\n", name );
2476
2477 /* Entry code */
2478
2479 fprintf( outfile, "\tpushl %%ebp\n" );
2480 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2481 fprintf( outfile, "\tpushl %%edi\n" );
2482 fprintf( outfile, "\tpushl %%esi\n" );
2483 fprintf( outfile, "\tpushl %%ebx\n" );
2484
2485 /* Get the 16-bit stack */
2486
2487 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET);
2488
2489 /* Convert it to a flat address */
2490
2491 fprintf( outfile, "\tshldl $16,%%ebx,%%eax\n" );
2492 fprintf( outfile, "\tandl $0xfff8,%%eax\n" );
2493 fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%esi\n" );
2494 fprintf( outfile, "\tmovw %%bx,%%ax\n" );
2495 fprintf( outfile, "\taddl %%eax,%%esi\n" );
2496
2497 /* Allocate temporary area (simulate STACK16_PUSH) */
2498
2499 fprintf( outfile, "\tpushf\n" );
2500 fprintf( outfile, "\tcld\n" );
2501 fprintf( outfile, "\tleal -%d(%%esi), %%edi\n", size );
2502 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2503 fprintf( outfile, "\trep\n\tmovsb\n" );
2504 fprintf( outfile, "\tpopf\n" );
2505
2506 fprintf( outfile, "\t.byte 0x64\n\tsubw $%d,(%d)\n", size, STACKOFFSET );
2507
2508 fprintf( outfile, "\tpushl %%edi\n" ); /* remember address */
2509
2510 /* Set up temporary area */
2511
2512 if ( !isEx )
2513 {
2514 fprintf( outfile, "\tleal 4(%%edi), %%edi\n" );
2515
2516 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2517 fprintf( outfile, "\tmovl %%eax, -8(%%edi)\n" ); /* 32-bit sp */
2518
2519 fprintf( outfile, "\tmovw %%ss, %%ax\n" );
2520 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2521 fprintf( outfile, "\tmovl %%eax, -4(%%edi)\n" ); /* 32-bit ss */
2522
2523 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 + 4 );
2524 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" ); /* 16-bit ss:sp */
2525
2526 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2527 fprintf( outfile, "\tmovl %%eax, 4(%%edi)\n" ); /* overwrite return address */
2528 }
2529 else
2530 {
2531 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 );
2532 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" );
2533
2534 fprintf( outfile, "\tmovw %%ds, %%ax\n" );
2535 fprintf( outfile, "\tmovw %%ax, 4(%%edi)\n" );
2536
2537 fprintf( outfile, "\taddl $20, %%ebx\n" );
2538 fprintf( outfile, "\tmovw %%bx, 10(%%edi)\n" );
2539
2540 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2541 fprintf( outfile, "\tmovl %%eax, 12(%%edi)\n" );
2542
2543 fprintf( outfile, "\tmovw %%ss, %%ax\n" );
2544 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2545 fprintf( outfile, "\tmovl %%eax, 16(%%edi)\n" );
2546
2547 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2548 fprintf( outfile, "\tmovl %%eax, 20(%%edi)\n" );
2549 }
2550
2551 /* Set up registers and call CBClient relay stub (simulating a far call) */
2552
2553 fprintf( outfile, "\tmovl 16(%%ebp), %%esi\n" );
2554 fprintf( outfile, "\tmovl (%%esi), %%esi\n" );
2555
2556 fprintf( outfile, "\tmovl %%edi, %%ebx\n" );
2557 fprintf( outfile, "\tmovl 8(%%ebp), %%eax\n" );
2558 fprintf( outfile, "\tmovl 12(%%ebp), %%ebp\n" );
2559
2560 fprintf( outfile, "\tpushl %%cs\n" );
2561 fprintf( outfile, "\tcall *%%eax\n" );
2562
2563 /* Return new esi value to caller */
2564
2565 fprintf( outfile, "\tmovl 32(%%esp), %%edi\n" );
2566 fprintf( outfile, "\tmovl %%esi, (%%edi)\n" );
2567
2568 /* Cleanup temporary area (simulate STACK16_POP) */
2569
2570 fprintf( outfile, "\tpop %%esi\n" );
2571
2572 fprintf( outfile, "\tpushf\n" );
2573 fprintf( outfile, "\tstd\n" );
2574 fprintf( outfile, "\tdec %%esi\n" );
2575 fprintf( outfile, "\tleal %d(%%esi), %%edi\n", size );
2576 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2577 fprintf( outfile, "\trep\n\tmovsb\n" );
2578 fprintf( outfile, "\tpopf\n" );
2579
2580 fprintf( outfile, "\t.byte 0x64\n\taddw $%d,(%d)\n", size, STACKOFFSET );
2581
2582 /* Return argument size to caller */
2583 if ( isEx )
2584 {
2585 fprintf( outfile, "\tmovl 32(%%esp), %%ebx\n" );
2586 fprintf( outfile, "\tmovl %%ebp, (%%ebx)\n" );
2587 }
2588
2589 /* Restore registers and return */
2590
2591 fprintf( outfile, "\tpopl %%ebx\n" );
2592 fprintf( outfile, "\tpopl %%esi\n" );
2593 fprintf( outfile, "\tpopl %%edi\n" );
2594 fprintf( outfile, "\tpopl %%ebp\n" );
2595 fprintf( outfile, "\tret\n" );
2596 }
2597
2598 static void BuildCallTo32CBClientRet( FILE *outfile, BOOL isEx )
2599 {
2600 char *name = isEx? "CBClientEx" : "CBClient";
2601
2602 /* '16-bit' return stub */
2603
2604 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_Ret\n", name );
2605 fprintf( outfile, PREFIX "CALL32_%s_Ret:\n", name );
2606
2607 if ( !isEx )
2608 {
2609 fprintf( outfile, "\tmovzwl %%sp, %%ebx\n" );
2610 fprintf( outfile, "\tlssl %%ss:-16(%%ebx), %%esp\n" );
2611 }
2612 else
2613 {
2614 fprintf( outfile, "\tmovzwl %%bp, %%ebx\n" );
2615 fprintf( outfile, "\tsubw %%bp, %%sp\n" );
2616 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
2617 fprintf( outfile, "\tlssl %%ss:-12(%%ebx), %%esp\n" );
2618 }
2619 fprintf( outfile, "\tlret\n" );
2620
2621 /* Declare the return address variable */
2622
2623 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_RetAddr\n", name );
2624 fprintf( outfile, PREFIX "CALL32_%s_RetAddr:\t.long 0\n", name );
2625 }
2626
2627
2628 /*******************************************************************
2629 * BuildCallTo32LargeStack
2630 *
2631 * Build the function used to switch to the original 32-bit stack
2632 * before calling a 32-bit function from 32-bit code. This is used for
2633 * functions that need a large stack, like X bitmaps functions.
2634 *
2635 * The generated function has the following prototype:
2636 * int xxx( int (*func)(), void *arg );
2637 *
2638 * The pointer to the function can be retrieved by calling CALL32_Init,
2639 * which also takes care of saving the current 32-bit stack pointer.
2640 * Furthermore, CALL32_Init switches to a new stack and jumps to the
2641 * specified target address.
2642 *
2643 * NOTE: The CALL32_LargeStack routine may be recursively entered by the
2644 * same thread, but not concurrently entered by several threads.
2645 *
2646 * Stack layout of CALL32_Init:
2647 *
2648 * (esp+12) new stack address
2649 * (esp+8) target address
2650 * (esp+4) pointer to variable to receive CALL32_LargeStack address
2651 * (esp) ret addr
2652 *
2653 * Stack layout of CALL32_LargeStack:
2654 * ... ...
2655 * (ebp+12) arg
2656 * (ebp+8) func
2657 * (ebp+4) ret addr
2658 * (ebp) ebp
2659 */
2660 static void BuildCallTo32LargeStack( FILE *outfile )
2661 {
2662 /* Initialization function */
2663
2664 fprintf( outfile, "\n\t.align 4\n" );
2665 #ifdef USE_STABS
2666 fprintf( outfile, ".stabs \"CALL32_Init:F1\",36,0,0," PREFIX "CALL32_Init\n");
2667 #endif
2668 fprintf( outfile, "\t.globl " PREFIX "CALL32_Init\n" );
2669 fprintf( outfile, "\t.type " PREFIX "CALL32_Init,@function\n" );
2670 fprintf( outfile, PREFIX "CALL32_Init:\n" );
2671 fprintf( outfile, "\tmovl %%esp,CALL32_Original32_esp\n" );
2672 fprintf( outfile, "\tpopl %%eax\n" );
2673 fprintf( outfile, "\tpopl %%eax\n" );
2674 fprintf( outfile, "\tmovl $CALL32_LargeStack,(%%eax)\n" );
2675 fprintf( outfile, "\tpopl %%eax\n" );
2676 fprintf( outfile, "\tpopl %%esp\n" );
2677 fprintf( outfile, "\tpushl %%eax\n" );
2678 fprintf( outfile, "\tret\n" );
2679
2680 /* Function header */
2681
2682 fprintf( outfile, "\n\t.align 4\n" );
2683 #ifdef USE_STABS
2684 fprintf( outfile, ".stabs \"CALL32_LargeStack:F1\",36,0,0,CALL32_LargeStack\n");
2685 #endif
2686 fprintf( outfile, "CALL32_LargeStack:\n" );
2687
2688 /* Entry code */
2689
2690 fprintf( outfile, "\tpushl %%ebp\n" );
2691 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2692
2693 /* Switch to the original 32-bit stack pointer */
2694
2695 fprintf( outfile, "\tcmpl $0, CALL32_RecursionCount\n" );
2696 fprintf( outfile, "\tjne CALL32_skip\n" );
2697 fprintf( outfile, "\tmovl CALL32_Original32_esp, %%esp\n" );
2698 fprintf( outfile, "CALL32_skip:\n" );
2699
2700 fprintf( outfile, "\tincl CALL32_RecursionCount\n" );
2701
2702 /* Transfer the argument and call the function */
2703
2704 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2705 fprintf( outfile, "\tcall *8(%%ebp)\n" );
2706
2707 /* Restore registers and return */
2708
2709 fprintf( outfile, "\tdecl CALL32_RecursionCount\n" );
2710
2711 fprintf( outfile, "\tmovl %%ebp,%%esp\n" );
2712 fprintf( outfile, "\tpopl %%ebp\n" );
2713 fprintf( outfile, "\tret\n" );
2714
2715 /* Data */
2716
2717 fprintf( outfile, "\t.data\n" );
2718 fprintf( outfile, "CALL32_Original32_esp:\t.long 0\n" );
2719 fprintf( outfile, "CALL32_RecursionCount:\t.long 0\n" );
2720 fprintf( outfile, "\t.text\n" );
2721 }
2722
2723
2724 /*******************************************************************
2725 * BuildCallFrom32Regs
2726 *
2727 * Build a 32-bit-to-Wine call-back function for a 'register' function.
2728 * 'args' is the number of dword arguments.
2729 *
2730 * Stack layout:
2731 * ...
2732 * (ebp+12) first arg
2733 * (ebp+8) ret addr to user code
2734 * (ebp+4) ret addr to relay code
2735 * (ebp+0) saved ebp
2736 * (ebp-128) buffer area to allow stack frame manipulation
2737 * (ebp-332) CONTEXT86 struct
2738 * (ebp-336) CONTEXT86 *argument
2739 * .... other arguments copied from (ebp+12)
2740 *
2741 * The entry point routine is called with a CONTEXT* extra argument,
2742 * following the normal args. In this context structure, EIP_reg
2743 * contains the return address to user code, and ESP_reg the stack
2744 * pointer on return (with the return address and arguments already
2745 * removed).
2746 */
2747 static void BuildCallFrom32Regs( FILE *outfile )
2748 {
2749 static const int STACK_SPACE = 128 + sizeof(CONTEXT86);
2750
2751 /* Function header */
2752
2753 fprintf( outfile, "\n\t.align 4\n" );
2754 #ifdef USE_STABS
2755 fprintf( outfile, ".stabs \"CALL32_Regs:F1\",36,0,0," PREFIX "CALL32_Regs\n" );
2756 #endif
2757 fprintf( outfile, "\t.globl " PREFIX "CALL32_Regs\n" );
2758 fprintf( outfile, PREFIX "CALL32_Regs:\n" );
2759
2760 /* Allocate some buffer space on the stack */
2761
2762 fprintf( outfile, "\tpushl %%ebp\n" );
2763 fprintf( outfile, "\tmovl %%esp,%%ebp\n ");
2764 fprintf( outfile, "\tleal -%d(%%esp), %%esp\n", STACK_SPACE );
2765
2766 /* Build the context structure */
2767
2768 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2769 fprintf( outfile, "\tpushfl\n" );
2770 fprintf( outfile, "\tpopl %%eax\n" );
2771 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2772 fprintf( outfile, "\tmovl 0(%%ebp),%%eax\n" );
2773 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2774 fprintf( outfile, "\tmovl %%ebx,%d(%%ebp)\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2775 fprintf( outfile, "\tmovl %%ecx,%d(%%ebp)\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2776 fprintf( outfile, "\tmovl %%edx,%d(%%ebp)\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2777 fprintf( outfile, "\tmovl %%esi,%d(%%ebp)\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2778 fprintf( outfile, "\tmovl %%edi,%d(%%ebp)\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2779
2780 fprintf( outfile, "\txorl %%eax,%%eax\n" );
2781 fprintf( outfile, "\tmovw %%cs,%%ax\n" );
2782 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegCs) - STACK_SPACE );
2783 fprintf( outfile, "\tmovw %%es,%%ax\n" );
2784 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2785 fprintf( outfile, "\tmovw %%fs,%%ax\n" );
2786 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2787 fprintf( outfile, "\tmovw %%gs,%%ax\n" );
2788 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2789 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2790 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegSs) - STACK_SPACE );
2791 fprintf( outfile, "\tmovw %%ds,%%ax\n" );
2792 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegDs) - STACK_SPACE );
2793 fprintf( outfile, "\tmovw %%ax,%%es\n" ); /* set %es equal to %ds just in case */
2794
2795 fprintf( outfile, "\tmovl $0x%x,%%eax\n", CONTEXT86_FULL );
2796 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(ContextFlags) - STACK_SPACE );
2797
2798 fprintf( outfile, "\tmovl 8(%%ebp),%%eax\n" ); /* Get %eip at time of call */
2799 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2800
2801 /* Transfer the arguments */
2802
2803 fprintf( outfile, "\tmovl 4(%%ebp),%%ebx\n" ); /* get relay code addr */
2804 fprintf( outfile, "\tpushl %%esp\n" ); /* push ptr to context struct */
2805 fprintf( outfile, "\tmovzbl 4(%%ebx),%%ecx\n" ); /* fetch number of args to copy */
2806 fprintf( outfile, "\tjecxz 1f\n" );
2807 fprintf( outfile, "\tsubl %%ecx,%%esp\n" );
2808 fprintf( outfile, "\tleal 12(%%ebp),%%esi\n" ); /* get %esp at time of call */
2809 fprintf( outfile, "\tmovl %%esp,%%edi\n" );
2810 fprintf( outfile, "\tshrl $2,%%ecx\n" );
2811 fprintf( outfile, "\tcld\n" );
2812 fprintf( outfile, "\trep\n\tmovsl\n" ); /* copy args */
2813
2814 fprintf( outfile, "1:\tmovzbl 5(%%ebx),%%eax\n" ); /* fetch number of args to remove */
2815 fprintf( outfile, "\tleal 12(%%ebp,%%eax),%%eax\n" );
2816 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2817
2818 /* Call the entry point */
2819
2820 fprintf( outfile, "\tcall *0(%%ebx)\n" );
2821
2822 /* Store %eip and %ebp onto the new stack */
2823
2824 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2825 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2826 fprintf( outfile, "\tmovl %%eax,-4(%%edx)\n" );
2827 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2828 fprintf( outfile, "\tmovl %%eax,-8(%%edx)\n" );
2829
2830 /* Restore the context structure */
2831
2832 /* Note: we don't bother to restore %cs, %ds and %ss
2833 * changing them in 32-bit code is a recipe for disaster anyway
2834 */
2835 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2836 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2837 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2838 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2839 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2840 fprintf( outfile, "\tmovw %%ax,%%gs\n" );
2841
2842 fprintf( outfile, "\tmovl %d(%%ebp),%%edi\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2843 fprintf( outfile, "\tmovl %d(%%ebp),%%esi\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2844 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2845 fprintf( outfile, "\tmovl %d(%%ebp),%%ecx\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2846 fprintf( outfile, "\tmovl %d(%%ebp),%%ebx\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2847
2848 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2849 fprintf( outfile, "\tpushl %%eax\n" );
2850 fprintf( outfile, "\tpopfl\n" );
2851 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2852
2853 fprintf( outfile, "\tmovl %d(%%ebp),%%ebp\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2854 fprintf( outfile, "\tleal -8(%%ebp),%%esp\n" );
2855 fprintf( outfile, "\tpopl %%ebp\n" );
2856 fprintf( outfile, "\tret\n" );
2857 }
2858
2859
2860 /*******************************************************************
2861 * BuildGlue
2862 *
2863 * Build the 16-bit-to-Wine/Wine-to-16-bit callback glue code
2864 */
2865 static void BuildGlue( FILE *outfile, FILE *infile )
2866 {
2867 char buffer[1024];
2868
2869 /* File header */
2870
2871 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
2872 input_file_name );
2873 fprintf( outfile, "#include \"builtin16.h\"\n" );
2874 fprintf( outfile, "#include \"stackframe.h\"\n\n" );
2875
2876 /* Build the callback glue functions */
2877
2878 while (fgets( buffer, sizeof(buffer), infile ))
2879 {
2880 if (strstr( buffer, "### start build ###" )) break;
2881 }
2882 while (fgets( buffer, sizeof(buffer), infile ))
2883 {
2884 char *p;
2885 if ( (p = strstr( buffer, "CallFrom16_" )) != NULL )
2886 {
2887 char *q, *profile = p + strlen( "CallFrom16_" );
2888 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2889 ;
2890 *q = '\0';
2891 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
2892 ;
2893 if ( ++q < p ) p[-1] = '\0'; else q = "";
2894 BuildCallFrom16Func( outfile, profile, q, FALSE );
2895 }
2896 if ( (p = strstr( buffer, "CallTo16_" )) != NULL )
2897 {
2898 char *q, *profile = p + strlen( "CallTo16_" );
2899 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2900 ;
2901 *q = '\0';
2902 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
2903 ;
2904 if ( ++q < p ) p[-1] = '\0'; else q = "";
2905 BuildCallTo16Func( outfile, profile, q );
2906 }
2907 if (strstr( buffer, "### stop build ###" )) break;
2908 }
2909
2910 fclose( infile );
2911 }
2912
2913 /*******************************************************************
2914 * BuildCall16
2915 *
2916 * Build the 16-bit callbacks
2917 */
2918 static void BuildCall16( FILE *outfile )
2919 {
2920 /* File header */
2921
2922 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
2923 fprintf( outfile, "\t.text\n" );
2924
2925 #ifdef __i386__
2926
2927 #ifdef USE_STABS
2928 if (output_file_name)
2929 {
2930 char buffer[1024];
2931 getcwd(buffer, sizeof(buffer));
2932 fprintf( outfile, "\t.file\t\"%s\"\n", output_file_name );
2933
2934 /*
2935 * The stabs help the internal debugger as they are an indication that it
2936 * is sensible to step into a thunk/trampoline.
2937 */
2938 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
2939 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", output_file_name );
2940 fprintf( outfile, "Code_Start:\n\n" );
2941 }
2942 #endif
2943 fprintf( outfile, PREFIX"Call16_Start:\n" );
2944 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
2945 fprintf( outfile, "\t.byte 0\n\n" );
2946
2947
2948 /* Standard CallFrom16 routine (WORD return) */
2949 BuildCallFrom16Core( outfile, FALSE, FALSE, TRUE );
2950
2951 /* Standard CallFrom16 routine (DWORD return) */
2952 BuildCallFrom16Core( outfile, FALSE, FALSE, FALSE );
2953
2954 /* Register CallFrom16 routine */
2955 BuildCallFrom16Core( outfile, TRUE, FALSE, FALSE );
2956
2957 /* C16ThkSL CallFrom16 routine */
2958 BuildCallFrom16Core( outfile, FALSE, TRUE, FALSE );
2959
2960 /* Standard CallTo16 routine (WORD return) */
2961 BuildCallTo16Core( outfile, TRUE, FALSE );
2962
2963 /* Standard CallTo16 routine (DWORD return) */
2964 BuildCallTo16Core( outfile, FALSE, FALSE );
2965
2966 /* Register CallTo16 routine (16:16 retf) */
2967 BuildCallTo16Core( outfile, FALSE, 1 );
2968
2969 /* Register CallTo16 routine (16:32 retf) */
2970 BuildCallTo16Core( outfile, FALSE, 2 );
2971
2972 /* CBClientThunkSL routine */
2973 BuildCallTo32CBClient( outfile, FALSE );
2974
2975 /* CBClientThunkSLEx routine */
2976 BuildCallTo32CBClient( outfile, TRUE );
2977
2978 fprintf( outfile, PREFIX"Call16_End:\n" );
2979 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
2980
2981 #ifdef USE_STABS
2982 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
2983 fprintf( outfile, ".Letext:\n");
2984 #endif
2985
2986 /* The whole Call16_Ret segment must lie within the .data section */
2987 fprintf( outfile, "\n\t.data\n" );
2988 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
2989 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
2990
2991 /* Standard CallTo16 return stub */
2992 BuildRet16Func( outfile );
2993
2994 /* CBClientThunkSL return stub */
2995 BuildCallTo32CBClientRet( outfile, FALSE );
2996
2997 /* CBClientThunkSLEx return stub */
2998 BuildCallTo32CBClientRet( outfile, TRUE );
2999
3000 /* End of Call16_Ret segment */
3001 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3002 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3003
3004 #else /* __i386__ */
3005
3006 fprintf( outfile, PREFIX"Call16_Start:\n" );
3007 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
3008 fprintf( outfile, "\t.byte 0\n\n" );
3009 fprintf( outfile, PREFIX"Call16_End:\n" );
3010 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
3011
3012 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
3013 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
3014 fprintf( outfile, "\t.byte 0\n\n" );
3015 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3016 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3017
3018 #endif /* __i386__ */
3019 }
3020
3021 /*******************************************************************
3022 * BuildCall32
3023 *
3024 * Build the 32-bit callbacks
3025 */
3026 static void BuildCall32( FILE *outfile )
3027 {
3028 /* File header */
3029
3030 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
3031 fprintf( outfile, "\t.text\n" );
3032
3033 #ifdef __i386__
3034
3035 #ifdef USE_STABS
3036 if (output_file_name)
3037 {
3038 char buffer[1024];
3039 getcwd(buffer, sizeof(buffer));
3040 fprintf( outfile, "\t.file\t\"%s\"\n", output_file_name );
3041
3042 /*
3043 * The stabs help the internal debugger as they are an indication that it
3044 * is sensible to step into a thunk/trampoline.
3045 */
3046 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
3047 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", output_file_name );
3048 fprintf( outfile, "Code_Start:\n" );
3049 }
3050 #endif
3051
3052 /* Build the 32-bit large stack callback */
3053
3054 BuildCallTo32LargeStack( outfile );
3055
3056 /* Build the register callback function */
3057
3058 BuildCallFrom32Regs( outfile );
3059
3060 #ifdef USE_STABS
3061 fprintf( outfile, "\t.text\n");
3062 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3063 fprintf( outfile, ".Letext:\n");
3064 #endif
3065
3066 #else /* __i386__ */
3067
3068 /* Just to avoid an empty file */
3069 fprintf( outfile, "\t.long 0\n" );
3070
3071 #endif /* __i386__ */
3072 }
3073
3074
3075 /*******************************************************************
3076 * usage
3077 */
3078 static void usage(void)
3079 {
3080 fprintf( stderr,
3081 "usage: build [-pic] [-o outfile] -spec SPEC_FILE\n"
3082 " build [-pic] [-o outfile] -glue SOURCE_FILE\n"
3083 " build [-pic] [-o outfile] -call16\n"
3084 " build [-pic] [-o outfile] -call32\n" );
3085 if (output_file_name) unlink( output_file_name );
3086 exit(1);
3087 }
3088
3089
3090 /*******************************************************************
3091 * open_input
3092 */
3093 static FILE *open_input( const char *name )
3094 {
3095 FILE *f;
3096
3097 if (!name)
3098 {
3099 input_file_name = "<stdin>";
3100 return stdin;
3101 }
3102 input_file_name = name;
3103 if (!(f = fopen( name, "r" )))
3104 {
3105 fprintf( stderr, "Cannot open input file '%s'\n", name );
3106 if (output_file_name) unlink( output_file_name );
3107 exit(1);
3108 }
3109 return f;
3110 }
3111
3112 /*******************************************************************
3113 * main
3114 */
3115 int main(int argc, char **argv)
3116 {
3117 FILE *outfile = stdout;
3118
3119 if (argc < 2) usage();
3120
3121 if (!strcmp( argv[1], "-pic" ))
3122 {
3123 UsePIC = 1;
3124 argv += 1;
3125 argc -= 1;
3126 if (argc < 2) usage();
3127 }
3128
3129 if (!strcmp( argv[1], "-o" ))
3130 {
3131 output_file_name = argv[2];
3132 argv += 2;
3133 argc -= 2;
3134 if (argc < 2) usage();
3135 if (!(outfile = fopen( output_file_name, "w" )))
3136 {
3137 fprintf( stderr, "Unable to create output file '%s'\n", output_file_name );
3138 exit(1);
3139 }
3140 }
3141
3142 /* Retrieve the selector values; this assumes that we are building
3143 * the asm files on the platform that will also run them. Probably
3144 * a safe assumption to make.
3145 */
3146 GET_CS( Code_Selector );
3147 GET_DS( Data_Selector );
3148
3149 if (!strcmp( argv[1], "-spec" )) BuildSpecFile( outfile, open_input( argv[2] ) );
3150 else if (!strcmp( argv[1], "-glue" )) BuildGlue( outfile, open_input( argv[2] ) );
3151 else if (!strcmp( argv[1], "-call16" )) BuildCall16( outfile );
3152 else if (!strcmp( argv[1], "-call32" )) BuildCall32( outfile );
3153 else
3154 {
3155 fclose( outfile );
3156 usage();
3157 }
3158
3159 fclose( outfile );
3160 return 0;
3161 }
Maarten's multimedia branch