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Use DInput's internal mouse event handler to handle the GetDeviceState
[wine/multimedia.git] / tools / build.c
blob88def0ada21d9590290d08c1bc824a7f31bbc8f5
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 <stdio.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <ctype.h>
16 #include <unistd.h>
17
18 #include "winbase.h"
19 #include "winnt.h"
20 #include "module.h"
21 #include "neexe.h"
22 #include "selectors.h"
23 #include "stackframe.h"
24 #include "builtin16.h"
25 #include "thread.h"
26
27 #ifdef NEED_UNDERSCORE_PREFIX
28 # define PREFIX "_"
29 #else
30 # define PREFIX
31 #endif
32
33 #ifdef HAVE_ASM_STRING
34 # define STRING ".string"
35 #else
36 # define STRING ".ascii"
37 #endif
38
39 #if defined(__GNUC__) && !defined(__svr4__)
40 # define USE_STABS
41 #else
42 # undef USE_STABS
43 #endif
44
45 typedef enum
46 {
47 TYPE_INVALID,
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 NULL,
68 "byte", /* TYPE_BYTE */
69 "word", /* TYPE_WORD */
70 "long", /* TYPE_LONG */
71 "pascal16", /* TYPE_PASCAL_16 */
72 "pascal", /* TYPE_PASCAL */
73 "equate", /* TYPE_ABS */
74 "register", /* TYPE_REGISTER */
75 "interrupt", /* TYPE_INTERRUPT */
76 "stub", /* TYPE_STUB */
77 "stdcall", /* TYPE_STDCALL */
78 "cdecl", /* TYPE_CDECL */
79 "varargs", /* TYPE_VARARGS */
80 "extern", /* TYPE_EXTERN */
81 "forward" /* TYPE_FORWARD */
82 };
83
84 #define MAX_ORDINALS 2048
85 #define MAX_IMPORTS 16
86
87 /* Callback function used for stub functions */
88 #define STUB_CALLBACK \
89 ((SpecType == SPEC_WIN16) ? "RELAY_Unimplemented16": "RELAY_Unimplemented32")
90
91 typedef enum
92 {
93 SPEC_INVALID,
94 SPEC_WIN16,
95 SPEC_WIN32
96 } SPEC_TYPE;
97
98 typedef struct
99 {
100 int n_values;
101 int *values;
102 } ORD_VARIABLE;
103
104 typedef struct
105 {
106 int n_args;
107 char arg_types[32];
108 char link_name[80];
109 } ORD_FUNCTION;
110
111 typedef struct
112 {
113 int arg_size;
114 int ret_value;
115 } ORD_RETURN;
116
117 typedef struct
118 {
119 int value;
120 } ORD_ABS;
121
122 typedef struct
123 {
124 char link_name[80];
125 } ORD_EXTERN;
126
127 typedef struct
128 {
129 char link_name[80];
130 } ORD_FORWARD;
131
132 typedef struct
133 {
134 ORD_TYPE type;
135 int offset;
136 int lineno;
137 char name[80];
138 union
139 {
140 ORD_VARIABLE var;
141 ORD_FUNCTION func;
142 ORD_RETURN ret;
143 ORD_ABS abs;
144 ORD_EXTERN ext;
145 ORD_FORWARD fwd;
146 } u;
147 } ORDDEF;
148
149 static ORDDEF OrdinalDefinitions[MAX_ORDINALS];
150
151 static SPEC_TYPE SpecType = SPEC_INVALID;
152 static char DLLName[80];
153 static char DLLFileName[80];
154 static int Limit = 0;
155 static int Base = MAX_ORDINALS;
156 static int DLLHeapSize = 0;
157 static char *SpecName;
158 static FILE *SpecFp;
159 static WORD Code_Selector, Data_Selector;
160 static char DLLInitFunc[80];
161 static char *DLLImports[MAX_IMPORTS];
162 static int nb_imports = 0;
163
164 char *ParseBuffer = NULL;
165 char *ParseNext;
166 char ParseSaveChar;
167 int Line;
168
169 static int UsePIC = 0;
170
171 static int debugging = 1;
172
173 /* Offset of a structure field relative to the start of the struct */
174 #define STRUCTOFFSET(type,field) ((int)&((type *)0)->field)
175
176 /* Offset of register relative to the start of the CONTEXT struct */
177 #define CONTEXTOFFSET(reg) STRUCTOFFSET(CONTEXT86,reg)
178
179 /* Offset of register relative to the start of the STACK16FRAME struct */
180 #define STACK16OFFSET(reg) STRUCTOFFSET(STACK16FRAME,reg)
181
182 /* Offset of register relative to the start of the STACK32FRAME struct */
183 #define STACK32OFFSET(reg) STRUCTOFFSET(STACK32FRAME,reg)
184
185 /* Offset of the stack pointer relative to %fs:(0) */
186 #define STACKOFFSET (STRUCTOFFSET(TEB,cur_stack))
187
188 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local );
189
190 static void *xmalloc (size_t size)
191 {
192 void *res;
193
194 res = malloc (size ? size : 1);
195 if (res == NULL)
196 {
197 fprintf (stderr, "Virtual memory exhausted.\n");
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 exit (1);
211 }
212 return res;
213 }
214
215 static char *xstrdup( const char *str )
216 {
217 char *res = strdup( str );
218 if (!res)
219 {
220 fprintf (stderr, "Virtual memory exhausted.\n");
221 exit (1);
222 }
223 return res;
224 }
225
226 static int IsNumberString(char *s)
227 {
228 while (*s != '\0')
229 if (!isdigit(*s++))
230 return 0;
231
232 return 1;
233 }
234
235 static char *strupper(char *s)
236 {
237 char *p;
238
239 for(p = s; *p != '\0'; p++)
240 *p = toupper(*p);
241
242 return s;
243 }
244
245 static char * GetTokenInLine(void)
246 {
247 char *p;
248 char *token;
249
250 if (ParseNext != ParseBuffer)
251 {
252 if (ParseSaveChar == '\0')
253 return NULL;
254 *ParseNext = ParseSaveChar;
255 }
256
257 /*
258 * Remove initial white space.
259 */
260 for (p = ParseNext; isspace(*p); p++)
261 ;
262
263 if ((*p == '\0') || (*p == '#'))
264 return NULL;
265
266 /*
267 * Find end of token.
268 */
269 token = p++;
270 if (*token != '(' && *token != ')')
271 while (*p != '\0' && *p != '(' && *p != ')' && !isspace(*p))
272 p++;
273
274 ParseSaveChar = *p;
275 ParseNext = p;
276 *p = '\0';
277
278 return token;
279 }
280
281 static char * GetToken(void)
282 {
283 char *token;
284
285 if (ParseBuffer == NULL)
286 {
287 ParseBuffer = xmalloc(512);
288 ParseNext = ParseBuffer;
289 while (1)
290 {
291 Line++;
292 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
293 return NULL;
294 if (ParseBuffer[0] != '#')
295 break;
296 }
297 }
298
299 while ((token = GetTokenInLine()) == NULL)
300 {
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 return token;
313 }
314
315
316 /*******************************************************************
317 * ParseVariable
318 *
319 * Parse a variable definition.
320 */
321 static int ParseVariable( ORDDEF *odp )
322 {
323 char *endptr;
324 int *value_array;
325 int n_values;
326 int value_array_size;
327
328 char *token = GetToken();
329 if (*token != '(')
330 {
331 fprintf(stderr, "%s:%d: Expected '(' got '%s'\n",
332 SpecName, Line, token);
333 return -1;
334 }
335
336 n_values = 0;
337 value_array_size = 25;
338 value_array = xmalloc(sizeof(*value_array) * value_array_size);
339
340 while ((token = GetToken()) != NULL)
341 {
342 if (*token == ')')
343 break;
344
345 value_array[n_values++] = strtol(token, &endptr, 0);
346 if (n_values == value_array_size)
347 {
348 value_array_size += 25;
349 value_array = xrealloc(value_array,
350 sizeof(*value_array) * value_array_size);
351 }
352
353 if (endptr == NULL || *endptr != '\0')
354 {
355 fprintf(stderr, "%s:%d: Expected number value, got '%s'\n",
356 SpecName, Line, token);
357 return -1;
358 }
359 }
360
361 if (token == NULL)
362 {
363 fprintf(stderr, "%s:%d: End of file in variable declaration\n",
364 SpecName, Line);
365 return -1;
366 }
367
368 odp->u.var.n_values = n_values;
369 odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values);
370
371 return 0;
372 }
373
374
375 /*******************************************************************
376 * ParseExportFunction
377 *
378 * Parse a function definition.
379 */
380 static int ParseExportFunction( ORDDEF *odp )
381 {
382 char *token;
383 int i;
384
385 switch(SpecType)
386 {
387 case SPEC_WIN16:
388 if (odp->type == TYPE_STDCALL)
389 {
390 fprintf( stderr, "%s:%d: 'stdcall' not supported for Win16\n",
391 SpecName, Line );
392 return -1;
393 }
394 else if (odp->type == TYPE_VARARGS)
395 {
396 fprintf( stderr, "%s:%d: 'varargs' not supported for Win16\n",
397 SpecName, Line );
398 return -1;
399 }
400 break;
401 case SPEC_WIN32:
402 if ((odp->type == TYPE_PASCAL) || (odp->type == TYPE_PASCAL_16))
403 {
404 fprintf( stderr, "%s:%d: 'pascal' not supported for Win32\n",
405 SpecName, Line );
406 return -1;
407 }
408 break;
409 default:
410 break;
411 }
412
413 token = GetToken();
414 if (*token != '(')
415 {
416 fprintf(stderr, "%s:%d: Expected '(' got '%s'\n",
417 SpecName, Line, token);
418 return -1;
419 }
420
421 for (i = 0; i < sizeof(odp->u.func.arg_types)-1; i++)
422 {
423 token = GetToken();
424 if (*token == ')')
425 break;
426
427 if (!strcmp(token, "word"))
428 odp->u.func.arg_types[i] = 'w';
429 else if (!strcmp(token, "s_word"))
430 odp->u.func.arg_types[i] = 's';
431 else if (!strcmp(token, "long") || !strcmp(token, "segptr"))
432 odp->u.func.arg_types[i] = 'l';
433 else if (!strcmp(token, "ptr"))
434 odp->u.func.arg_types[i] = 'p';
435 else if (!strcmp(token, "str"))
436 odp->u.func.arg_types[i] = 't';
437 else if (!strcmp(token, "wstr"))
438 odp->u.func.arg_types[i] = 'W';
439 else if (!strcmp(token, "segstr"))
440 odp->u.func.arg_types[i] = 'T';
441 else if (!strcmp(token, "double"))
442 {
443 odp->u.func.arg_types[i++] = 'l';
444 odp->u.func.arg_types[i] = 'l';
445 }
446 else
447 {
448 fprintf(stderr, "%s:%d: Unknown variable type '%s'\n",
449 SpecName, Line, token);
450 return -1;
451 }
452 if (SpecType == SPEC_WIN32)
453 {
454 if (strcmp(token, "long") &&
455 strcmp(token, "ptr") &&
456 strcmp(token, "str") &&
457 strcmp(token, "wstr") &&
458 strcmp(token, "double"))
459 {
460 fprintf( stderr, "%s:%d: Type '%s' not supported for Win32\n",
461 SpecName, Line, token );
462 return -1;
463 }
464 }
465 }
466 if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types)))
467 {
468 fprintf( stderr, "%s:%d: Too many arguments\n", SpecName, Line );
469 return -1;
470 }
471 odp->u.func.arg_types[i] = '\0';
472 if ((odp->type == TYPE_STDCALL) && !i)
473 odp->type = TYPE_CDECL; /* stdcall is the same as cdecl for 0 args */
474 strcpy(odp->u.func.link_name, GetToken());
475
476 /* Ignore Win32 'register' routines on non-Intel archs */
477 #ifndef __i386__
478 if ( odp->type == TYPE_REGISTER && SpecType == SPEC_WIN32 )
479 odp->type = TYPE_INVALID;
480 #endif
481
482 return 0;
483 }
484
485
486 /*******************************************************************
487 * ParseEquate
488 *
489 * Parse an 'equate' definition.
490 */
491 static int ParseEquate( ORDDEF *odp )
492 {
493 char *endptr;
494
495 char *token = GetToken();
496 int value = strtol(token, &endptr, 0);
497 if (endptr == NULL || *endptr != '\0')
498 {
499 fprintf(stderr, "%s:%d: Expected number value, got '%s'\n",
500 SpecName, Line, token);
501 return -1;
502 }
503
504 if (SpecType == SPEC_WIN32)
505 {
506 fprintf( stderr, "%s:%d: 'equate' not supported for Win32\n",
507 SpecName, Line );
508 return -1;
509 }
510
511 odp->u.abs.value = value;
512 return 0;
513 }
514
515
516 /*******************************************************************
517 * ParseStub
518 *
519 * Parse a 'stub' definition.
520 */
521 static int ParseStub( ORDDEF *odp )
522 {
523 odp->u.func.arg_types[0] = '\0';
524 strcpy( odp->u.func.link_name, STUB_CALLBACK );
525 return 0;
526 }
527
528
529 /*******************************************************************
530 * ParseInterrupt
531 *
532 * Parse an 'interrupt' definition.
533 */
534 static int ParseInterrupt( ORDDEF *odp )
535 {
536 char *token;
537
538 if (SpecType == SPEC_WIN32)
539 {
540 fprintf( stderr, "%s:%d: 'interrupt' not supported for Win32\n",
541 SpecName, Line );
542 return -1;
543 }
544
545 token = GetToken();
546 if (*token != '(')
547 {
548 fprintf(stderr, "%s:%d: Expected '(' got '%s'\n",
549 SpecName, Line, token);
550 return -1;
551 }
552 token = GetToken();
553 if (*token != ')')
554 {
555 fprintf(stderr, "%s:%d: Expected ')' got '%s'\n",
556 SpecName, Line, token);
557 return -1;
558 }
559
560 odp->u.func.arg_types[0] = '\0';
561 strcpy( odp->u.func.link_name, GetToken() );
562 return 0;
563 }
564
565
566 /*******************************************************************
567 * ParseExtern
568 *
569 * Parse an 'extern' definition.
570 */
571 static int ParseExtern( ORDDEF *odp )
572 {
573 if (SpecType == SPEC_WIN16)
574 {
575 fprintf( stderr, "%s:%d: 'extern' not supported for Win16\n",
576 SpecName, Line );
577 return -1;
578 }
579 strcpy( odp->u.ext.link_name, GetToken() );
580 return 0;
581 }
582
583
584 /*******************************************************************
585 * ParseForward
586 *
587 * Parse a 'forward' definition.
588 */
589 static int ParseForward( ORDDEF *odp )
590 {
591 if (SpecType == SPEC_WIN16)
592 {
593 fprintf( stderr, "%s:%d: 'forward' not supported for Win16\n",
594 SpecName, Line );
595 return -1;
596 }
597 strcpy( odp->u.fwd.link_name, GetToken() );
598 return 0;
599 }
600
601
602 /*******************************************************************
603 * ParseOrdinal
604 *
605 * Parse an ordinal definition.
606 */
607 static int ParseOrdinal(int ordinal)
608 {
609 ORDDEF *odp;
610 char *token;
611
612 if (ordinal >= MAX_ORDINALS)
613 {
614 fprintf(stderr, "%s:%d: Ordinal number too large\n", SpecName, Line );
615 return -1;
616 }
617 if (ordinal > Limit) Limit = ordinal;
618 if (ordinal < Base) Base = ordinal;
619
620 odp = &OrdinalDefinitions[ordinal];
621 if (!(token = GetToken()))
622 {
623 fprintf(stderr, "%s:%d: Expected type after ordinal\n", SpecName, Line);
624 return -1;
625 }
626
627 for (odp->type = 0; odp->type < TYPE_NBTYPES; odp->type++)
628 if (TypeNames[odp->type] && !strcmp( token, TypeNames[odp->type] ))
629 break;
630
631 if (odp->type >= TYPE_NBTYPES)
632 {
633 fprintf( stderr,
634 "%s:%d: Expected type after ordinal, found '%s' instead\n",
635 SpecName, Line, token );
636 return -1;
637 }
638
639 if (!(token = GetToken()))
640 {
641 fprintf( stderr, "%s:%d: Expected name after type\n", SpecName, Line );
642 return -1;
643 }
644 strcpy( odp->name, token );
645 odp->lineno = Line;
646
647 switch(odp->type)
648 {
649 case TYPE_BYTE:
650 case TYPE_WORD:
651 case TYPE_LONG:
652 return ParseVariable( odp );
653 case TYPE_PASCAL_16:
654 case TYPE_PASCAL:
655 case TYPE_REGISTER:
656 case TYPE_STDCALL:
657 case TYPE_VARARGS:
658 case TYPE_CDECL:
659 return ParseExportFunction( odp );
660 case TYPE_INTERRUPT:
661 return ParseInterrupt( odp );
662 case TYPE_ABS:
663 return ParseEquate( odp );
664 case TYPE_STUB:
665 return ParseStub( odp );
666 case TYPE_EXTERN:
667 return ParseExtern( odp );
668 case TYPE_FORWARD:
669 return ParseForward( odp );
670 default:
671 fprintf( stderr, "Should not happen\n" );
672 return -1;
673 }
674 }
675
676
677 /*******************************************************************
678 * ParseTopLevel
679 *
680 * Parse a spec file.
681 */
682 static int ParseTopLevel(void)
683 {
684 char *token;
685
686 while ((token = GetToken()) != NULL)
687 {
688 if (strcmp(token, "name") == 0)
689 {
690 strcpy(DLLName, GetToken());
691 strupper(DLLName);
692 if (!DLLFileName[0]) sprintf( DLLFileName, "%s.DLL", DLLName );
693 }
694 else if (strcmp(token, "file") == 0)
695 {
696 strcpy(DLLFileName, GetToken());
697 strupper(DLLFileName);
698 }
699 else if (strcmp(token, "type") == 0)
700 {
701 token = GetToken();
702 if (!strcmp(token, "win16" )) SpecType = SPEC_WIN16;
703 else if (!strcmp(token, "win32" )) SpecType = SPEC_WIN32;
704 else
705 {
706 fprintf(stderr, "%s:%d: Type must be 'win16' or 'win32'\n",
707 SpecName, Line);
708 return -1;
709 }
710 }
711 else if (strcmp(token, "heap") == 0)
712 {
713 token = GetToken();
714 if (!IsNumberString(token))
715 {
716 fprintf(stderr, "%s:%d: Expected number after heap\n",
717 SpecName, Line);
718 return -1;
719 }
720 DLLHeapSize = atoi(token);
721 }
722 else if (strcmp(token, "init") == 0)
723 {
724 strcpy(DLLInitFunc, GetToken());
725 if (SpecType == SPEC_WIN16)
726 {
727 fprintf(stderr, "%s:%d: init cannot be used for Win16 spec files\n",
728 SpecName, Line);
729 return -1;
730 }
731 if (!DLLInitFunc[0])
732 {
733 fprintf(stderr, "%s:%d: Expected function name after init\n", SpecName, Line);
734 return -1;
735 }
736 }
737 else if (strcmp(token, "import") == 0)
738 {
739 if (nb_imports >= MAX_IMPORTS)
740 {
741 fprintf( stderr, "%s:%d: Too many imports (limit %d)\n",
742 SpecName, Line, MAX_IMPORTS );
743 return -1;
744 }
745 if (SpecType != SPEC_WIN32)
746 {
747 fprintf( stderr, "%s:%d: Imports not supported for Win16\n", SpecName, Line );
748 return -1;
749 }
750 DLLImports[nb_imports++] = xstrdup(GetToken());
751 }
752 else if (IsNumberString(token))
753 {
754 int ordinal;
755 int rv;
756
757 ordinal = atoi(token);
758 if ((rv = ParseOrdinal(ordinal)) < 0)
759 return rv;
760 }
761 else
762 {
763 fprintf(stderr,
764 "%s:%d: Expected name, id, length or ordinal\n",
765 SpecName, Line);
766 return -1;
767 }
768 }
769
770 return 0;
771 }
772
773
774 /*******************************************************************
775 * StoreVariableCode
776 *
777 * Store a list of ints into a byte array.
778 */
779 static int StoreVariableCode( unsigned char *buffer, int size, ORDDEF *odp )
780 {
781 int i;
782
783 switch(size)
784 {
785 case 1:
786 for (i = 0; i < odp->u.var.n_values; i++)
787 buffer[i] = odp->u.var.values[i];
788 break;
789 case 2:
790 for (i = 0; i < odp->u.var.n_values; i++)
791 ((unsigned short *)buffer)[i] = odp->u.var.values[i];
792 break;
793 case 4:
794 for (i = 0; i < odp->u.var.n_values; i++)
795 ((unsigned int *)buffer)[i] = odp->u.var.values[i];
796 break;
797 }
798 return odp->u.var.n_values * size;
799 }
800
801
802 /*******************************************************************
803 * DumpBytes
804 *
805 * Dump a byte stream into the assembly code.
806 */
807 static void DumpBytes( FILE *outfile, const unsigned char *data, int len,
808 const char *label )
809 {
810 int i;
811
812 fprintf( outfile, "\nstatic BYTE %s[] = \n{", label );
813
814 for (i = 0; i < len; i++)
815 {
816 if (!(i & 0x0f)) fprintf( outfile, "\n " );
817 fprintf( outfile, "%d", *data++ );
818 if (i < len - 1) fprintf( outfile, ", " );
819 }
820 fprintf( outfile, "\n};\n" );
821 }
822
823
824 /*******************************************************************
825 * BuildModule16
826 *
827 * Build the in-memory representation of a 16-bit NE module, and dump it
828 * as a byte stream into the assembly code.
829 */
830 static int BuildModule16( FILE *outfile, int max_code_offset,
831 int max_data_offset )
832 {
833 ORDDEF *odp;
834 int i;
835 char *buffer;
836 NE_MODULE *pModule;
837 SEGTABLEENTRY *pSegment;
838 OFSTRUCT *pFileInfo;
839 BYTE *pstr;
840 WORD *pword;
841 ET_BUNDLE *bundle = 0;
842 ET_ENTRY *entry = 0;
843
844 /* Module layout:
845 * NE_MODULE Module
846 * OFSTRUCT File information
847 * SEGTABLEENTRY Segment 1 (code)
848 * SEGTABLEENTRY Segment 2 (data)
849 * WORD[2] Resource table (empty)
850 * BYTE[2] Imported names (empty)
851 * BYTE[n] Resident names table
852 * BYTE[n] Entry table
853 */
854
855 buffer = xmalloc( 0x10000 );
856
857 pModule = (NE_MODULE *)buffer;
858 memset( pModule, 0, sizeof(*pModule) );
859 pModule->magic = IMAGE_OS2_SIGNATURE;
860 pModule->count = 1;
861 pModule->next = 0;
862 pModule->flags = NE_FFLAGS_SINGLEDATA | NE_FFLAGS_BUILTIN | NE_FFLAGS_LIBMODULE;
863 pModule->dgroup = 2;
864 pModule->heap_size = DLLHeapSize;
865 pModule->stack_size = 0;
866 pModule->ip = 0;
867 pModule->cs = 0;
868 pModule->sp = 0;
869 pModule->ss = 0;
870 pModule->seg_count = 2;
871 pModule->modref_count = 0;
872 pModule->nrname_size = 0;
873 pModule->modref_table = 0;
874 pModule->nrname_fpos = 0;
875 pModule->moveable_entries = 0;
876 pModule->alignment = 0;
877 pModule->truetype = 0;
878 pModule->os_flags = NE_OSFLAGS_WINDOWS;
879 pModule->misc_flags = 0;
880 pModule->dlls_to_init = 0;
881 pModule->nrname_handle = 0;
882 pModule->min_swap_area = 0;
883 pModule->expected_version = 0;
884 pModule->module32 = 0;
885 pModule->self = 0;
886 pModule->self_loading_sel = 0;
887
888 /* File information */
889
890 pFileInfo = (OFSTRUCT *)(pModule + 1);
891 pModule->fileinfo = (int)pFileInfo - (int)pModule;
892 memset( pFileInfo, 0, sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) );
893 pFileInfo->cBytes = sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName)
894 + strlen(DLLFileName);
895 strcpy( pFileInfo->szPathName, DLLFileName );
896 pstr = (char *)pFileInfo + pFileInfo->cBytes + 1;
897
898 #ifdef __i386__ /* FIXME: Alignment problems! */
899
900 /* Segment table */
901
902 pSegment = (SEGTABLEENTRY *)pstr;
903 pModule->seg_table = (int)pSegment - (int)pModule;
904 pSegment->filepos = 0;
905 pSegment->size = max_code_offset;
906 pSegment->flags = 0;
907 pSegment->minsize = max_code_offset;
908 pSegment->hSeg = 0;
909 pSegment++;
910
911 pModule->dgroup_entry = (int)pSegment - (int)pModule;
912 pSegment->filepos = 0;
913 pSegment->size = max_data_offset;
914 pSegment->flags = NE_SEGFLAGS_DATA;
915 pSegment->minsize = max_data_offset;
916 pSegment->hSeg = 0;
917 pSegment++;
918
919 /* Resource table */
920
921 pword = (WORD *)pSegment;
922 pModule->res_table = (int)pword - (int)pModule;
923 *pword++ = 0;
924 *pword++ = 0;
925
926 /* Imported names table */
927
928 pstr = (char *)pword;
929 pModule->import_table = (int)pstr - (int)pModule;
930 *pstr++ = 0;
931 *pstr++ = 0;
932
933 /* Resident names table */
934
935 pModule->name_table = (int)pstr - (int)pModule;
936 /* First entry is module name */
937 *pstr = strlen(DLLName );
938 strcpy( pstr + 1, DLLName );
939 pstr += *pstr + 1;
940 *(WORD *)pstr = 0;
941 pstr += sizeof(WORD);
942 /* Store all ordinals */
943 odp = OrdinalDefinitions + 1;
944 for (i = 1; i <= Limit; i++, odp++)
945 {
946 if (!odp->name[0]) continue;
947 *pstr = strlen( odp->name );
948 strcpy( pstr + 1, odp->name );
949 strupper( pstr + 1 );
950 pstr += *pstr + 1;
951 *(WORD *)pstr = i;
952 pstr += sizeof(WORD);
953 }
954 *pstr++ = 0;
955
956 /* Entry table */
957
958 pModule->entry_table = (int)pstr - (int)pModule;
959 odp = OrdinalDefinitions + 1;
960 for (i = 1; i <= Limit; i++, odp++)
961 {
962 int selector = 0;
963
964 switch (odp->type)
965 {
966 case TYPE_CDECL:
967 case TYPE_PASCAL:
968 case TYPE_PASCAL_16:
969 case TYPE_REGISTER:
970 case TYPE_INTERRUPT:
971 case TYPE_STUB:
972 selector = 1; /* Code selector */
973 break;
974
975 case TYPE_BYTE:
976 case TYPE_WORD:
977 case TYPE_LONG:
978 selector = 2; /* Data selector */
979 break;
980
981 case TYPE_ABS:
982 selector = 0xfe; /* Constant selector */
983 break;
984
985 default:
986 selector = 0; /* Invalid selector */
987 break;
988 }
989
990 if ( !selector )
991 continue;
992
993 if ( bundle && bundle->last+1 == i )
994 bundle->last++;
995 else
996 {
997 if ( bundle )
998 bundle->next = (char *)pstr - (char *)pModule;
999
1000 bundle = (ET_BUNDLE *)pstr;
1001 bundle->first = i-1;
1002 bundle->last = i;
1003 bundle->next = 0;
1004 pstr += sizeof(ET_BUNDLE);
1005 }
1006
1007 /* FIXME: is this really correct ?? */
1008 entry = (ET_ENTRY *)pstr;
1009 entry->type = 0xff; /* movable */
1010 entry->flags = 3; /* exported & public data */
1011 entry->segnum = selector;
1012 entry->offs = odp->offset;
1013 pstr += sizeof(ET_ENTRY);
1014 }
1015 *pstr++ = 0;
1016 #endif
1017
1018 /* Dump the module content */
1019
1020 DumpBytes( outfile, (char *)pModule, (int)pstr - (int)pModule,
1021 "Module" );
1022 return (int)pstr - (int)pModule;
1023 }
1024
1025
1026 /*******************************************************************
1027 * BuildSpec32File
1028 *
1029 * Build a Win32 C file from a spec file.
1030 */
1031 static int BuildSpec32File( char * specfile, FILE *outfile )
1032 {
1033 ORDDEF *odp;
1034 int i, nb_names, fwd_size = 0, have_regs = FALSE;
1035
1036 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1037 specfile );
1038 fprintf( outfile, "#include \"builtin32.h\"\n\n" );
1039
1040 /* Output code for all stubs functions */
1041
1042 fprintf( outfile, "extern const BUILTIN32_DESCRIPTOR %s_Descriptor;\n",
1043 DLLName );
1044 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1045 {
1046 if (odp->type != TYPE_STUB) continue;
1047 fprintf( outfile, "static void __stub_%d() { BUILTIN32_Unimplemented(&%s_Descriptor,%d); }\n",
1048 i, DLLName, i );
1049 }
1050
1051 /* Output the DLL functions prototypes */
1052
1053 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1054 {
1055 switch(odp->type)
1056 {
1057 case TYPE_EXTERN:
1058 fprintf( outfile, "extern void %s();\n", odp->u.ext.link_name );
1059 break;
1060 case TYPE_STDCALL:
1061 case TYPE_VARARGS:
1062 case TYPE_CDECL:
1063 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1064 break;
1065 case TYPE_FORWARD:
1066 fwd_size += strlen(odp->u.fwd.link_name) + 1;
1067 break;
1068 case TYPE_REGISTER:
1069 fprintf( outfile, "extern void __regs_%d();\n", i );
1070 have_regs = TRUE;
1071 break;
1072 case TYPE_INVALID:
1073 case TYPE_STUB:
1074 break;
1075 default:
1076 fprintf(stderr,"build: function type %d not available for Win32\n",
1077 odp->type);
1078 return -1;
1079 }
1080 }
1081
1082 /* Output LibMain function */
1083 if (DLLInitFunc[0]) fprintf( outfile, "extern void %s();\n", DLLInitFunc );
1084
1085
1086 /* Output code for all register functions */
1087
1088 if ( have_regs )
1089 {
1090 fprintf( outfile, "#ifndef __GNUC__\n" );
1091 fprintf( outfile, "static void __asm__dummy() {\n" );
1092 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1093 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1094 {
1095 if (odp->type != TYPE_REGISTER) continue;
1096 fprintf( outfile,
1097 "__asm__(\".align 4\\n\\t\"\n"
1098 " \".type " PREFIX "__regs_%d,@function\\n\\t\"\n"
1099 " \"" PREFIX "__regs_%d:\\n\\t\"\n"
1100 " \"call " PREFIX "CALL32_Regs\\n\\t\"\n"
1101 " \".long " PREFIX "%s\\n\\t\"\n"
1102 " \".byte %d,%d\");\n",
1103 i, i, odp->u.func.link_name,
1104 4 * strlen(odp->u.func.arg_types),
1105 4 * strlen(odp->u.func.arg_types) );
1106 }
1107 fprintf( outfile, "#ifndef __GNUC__\n" );
1108 fprintf( outfile, "}\n" );
1109 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1110 }
1111
1112 /* Output the DLL functions table */
1113
1114 fprintf( outfile, "\nstatic const ENTRYPOINT32 Functions[%d] =\n{\n",
1115 Limit - Base + 1 );
1116 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1117 {
1118 switch(odp->type)
1119 {
1120 case TYPE_INVALID:
1121 fprintf( outfile, " 0" );
1122 break;
1123 case TYPE_EXTERN:
1124 fprintf( outfile, " %s", odp->u.ext.link_name );
1125 break;
1126 case TYPE_STDCALL:
1127 case TYPE_VARARGS:
1128 case TYPE_CDECL:
1129 fprintf( outfile, " %s", odp->u.func.link_name);
1130 break;
1131 case TYPE_STUB:
1132 fprintf( outfile, " __stub_%d", i );
1133 break;
1134 case TYPE_REGISTER:
1135 fprintf( outfile, " __regs_%d", i );
1136 break;
1137 case TYPE_FORWARD:
1138 fprintf( outfile, " (ENTRYPOINT32)\"%s\"", odp->u.fwd.link_name );
1139 break;
1140 default:
1141 return -1;
1142 }
1143 if (i < Limit) fprintf( outfile, ",\n" );
1144 }
1145 fprintf( outfile, "\n};\n\n" );
1146
1147 /* Output the DLL names table */
1148
1149 nb_names = 0;
1150 fprintf( outfile, "static const char * const FuncNames[] =\n{\n" );
1151 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1152 {
1153 if (odp->type == TYPE_INVALID) continue;
1154 if (nb_names++) fprintf( outfile, ",\n" );
1155 fprintf( outfile, " \"%s\"", odp->name );
1156 }
1157 fprintf( outfile, "\n};\n\n" );
1158
1159 /* Output the DLL argument types */
1160
1161 fprintf( outfile, "static const unsigned int ArgTypes[%d] =\n{\n",
1162 Limit - Base + 1 );
1163 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1164 {
1165 unsigned int j, mask = 0;
1166 if ((odp->type == TYPE_STDCALL) || (odp->type == TYPE_CDECL) ||
1167 (odp->type == TYPE_REGISTER))
1168 for (j = 0; odp->u.func.arg_types[j]; j++)
1169 {
1170 if (odp->u.func.arg_types[j] == 't') mask |= 1<< (j*2);
1171 if (odp->u.func.arg_types[j] == 'W') mask |= 2<< (j*2);
1172 }
1173 fprintf( outfile, " %d", mask );
1174 if (i < Limit) fprintf( outfile, ",\n" );
1175 }
1176 fprintf( outfile, "\n};\n\n" );
1177
1178 /* Output the DLL ordinals table */
1179
1180 fprintf( outfile, "static const unsigned short FuncOrdinals[] =\n{\n" );
1181 nb_names = 0;
1182 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1183 {
1184 if (odp->type == TYPE_INVALID) continue;
1185 if (nb_names++) fprintf( outfile, ",\n" );
1186 fprintf( outfile, " %d", i - Base );
1187 }
1188 fprintf( outfile, "\n};\n\n" );
1189
1190 /* Output the DLL functions arguments */
1191
1192 fprintf( outfile, "static const unsigned char FuncArgs[%d] =\n{\n",
1193 Limit - Base + 1 );
1194 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1195 {
1196 unsigned char args;
1197 switch(odp->type)
1198 {
1199 case TYPE_STDCALL:
1200 args = (unsigned char)strlen(odp->u.func.arg_types);
1201 break;
1202 case TYPE_CDECL:
1203 args = 0x80 | (unsigned char)strlen(odp->u.func.arg_types);
1204 break;
1205 case TYPE_REGISTER:
1206 args = 0x40 | (unsigned char)strlen(odp->u.func.arg_types);
1207 break;
1208 case TYPE_FORWARD:
1209 args = 0xfd;
1210 break;
1211 default:
1212 args = 0xff;
1213 break;
1214 }
1215 fprintf( outfile, " 0x%02x", args );
1216 if (i < Limit) fprintf( outfile, ",\n" );
1217 }
1218 fprintf( outfile, "\n};\n\n" );
1219
1220 /* Output the DLL imports */
1221
1222 if (nb_imports)
1223 {
1224 fprintf( outfile, "static const char * const Imports[%d] =\n{\n", nb_imports );
1225 for (i = 0; i < nb_imports; i++)
1226 {
1227 fprintf( outfile, " \"%s\"", DLLImports[i] );
1228 if (i < nb_imports-1) fprintf( outfile, ",\n" );
1229 }
1230 fprintf( outfile, "\n};\n\n" );
1231 }
1232
1233 /* Output the DLL descriptor */
1234
1235 fprintf( outfile, "const BUILTIN32_DESCRIPTOR %s_Descriptor =\n{\n",
1236 DLLName );
1237 fprintf( outfile, " \"%s\",\n", DLLName );
1238 fprintf( outfile, " \"%s\",\n", DLLFileName );
1239 fprintf( outfile, " %d,\n", Base );
1240 fprintf( outfile, " %d,\n", Limit - Base + 1 );
1241 fprintf( outfile, " %d,\n", nb_names );
1242 fprintf( outfile, " %d,\n", nb_imports );
1243 fprintf( outfile, " %d,\n", (fwd_size + 3) & ~3 );
1244 fprintf( outfile,
1245 " Functions,\n"
1246 " FuncNames,\n"
1247 " FuncOrdinals,\n"
1248 " FuncArgs,\n"
1249 " ArgTypes,\n");
1250 fprintf( outfile, " %s,\n", nb_imports ? "Imports" : "0" );
1251 fprintf( outfile, " %s\n", DLLInitFunc[0] ? DLLInitFunc : "0" );
1252 fprintf( outfile, "};\n" );
1253 return 0;
1254 }
1255
1256 /*******************************************************************
1257 * Spec16TypeCompare
1258 */
1259 static int Spec16TypeCompare( const void *e1, const void *e2 )
1260 {
1261 const ORDDEF *odp1 = *(const ORDDEF **)e1;
1262 const ORDDEF *odp2 = *(const ORDDEF **)e2;
1263
1264 int type1 = (odp1->type == TYPE_CDECL) ? 0
1265 : (odp1->type == TYPE_REGISTER) ? 3
1266 : (odp1->type == TYPE_INTERRUPT) ? 4
1267 : (odp1->type == TYPE_PASCAL_16) ? 1 : 2;
1268
1269 int type2 = (odp2->type == TYPE_CDECL) ? 0
1270 : (odp2->type == TYPE_REGISTER) ? 3
1271 : (odp2->type == TYPE_INTERRUPT) ? 4
1272 : (odp2->type == TYPE_PASCAL_16) ? 1 : 2;
1273
1274 int retval = type1 - type2;
1275 if ( !retval )
1276 retval = strcmp( odp1->u.func.arg_types, odp2->u.func.arg_types );
1277
1278 return retval;
1279 }
1280
1281 /*******************************************************************
1282 * BuildSpec16File
1283 *
1284 * Build a Win16 assembly file from a spec file.
1285 */
1286 static int BuildSpec16File( char * specfile, FILE *outfile )
1287 {
1288 ORDDEF *odp, **type, **typelist;
1289 int i, nFuncs, nTypes;
1290 int code_offset, data_offset, module_size;
1291 unsigned char *data;
1292
1293 /* File header */
1294
1295 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1296 specfile );
1297 fprintf( outfile, "#define __FLATCS__ 0x%04x\n", Code_Selector );
1298 fprintf( outfile, "#include \"builtin16.h\"\n\n" );
1299
1300 data = (unsigned char *)xmalloc( 0x10000 );
1301 memset( data, 0, 16 );
1302 data_offset = 16;
1303
1304
1305 /* Build sorted list of all argument types, without duplicates */
1306
1307 typelist = (ORDDEF **)calloc( Limit+1, sizeof(ORDDEF *) );
1308
1309 odp = OrdinalDefinitions;
1310 for (i = nFuncs = 0; i <= Limit; i++, odp++)
1311 {
1312 switch (odp->type)
1313 {
1314 case TYPE_REGISTER:
1315 case TYPE_INTERRUPT:
1316 case TYPE_CDECL:
1317 case TYPE_PASCAL:
1318 case TYPE_PASCAL_16:
1319 case TYPE_STUB:
1320 typelist[nFuncs++] = odp;
1321
1322 default:
1323 break;
1324 }
1325 }
1326
1327 qsort( typelist, nFuncs, sizeof(ORDDEF *), Spec16TypeCompare );
1328
1329 i = nTypes = 0;
1330 while ( i < nFuncs )
1331 {
1332 typelist[nTypes++] = typelist[i++];
1333 while ( i < nFuncs && Spec16TypeCompare( typelist + i, typelist + nTypes-1 ) == 0 )
1334 i++;
1335 }
1336
1337 /* Output CallFrom16 routines needed by this .spec file */
1338
1339 for ( i = 0; i < nTypes; i++ )
1340 {
1341 char profile[101];
1342
1343 sprintf( profile, "%s_%s_%s",
1344 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1345 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1346 (typelist[i]->type == TYPE_INTERRUPT) ? "intr" :
1347 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1348 typelist[i]->u.func.arg_types );
1349
1350 BuildCallFrom16Func( outfile, profile, DLLName, TRUE );
1351 }
1352
1353 /* Output the DLL functions prototypes */
1354
1355 odp = OrdinalDefinitions;
1356 for (i = 0; i <= Limit; i++, odp++)
1357 {
1358 switch(odp->type)
1359 {
1360 case TYPE_REGISTER:
1361 case TYPE_INTERRUPT:
1362 case TYPE_CDECL:
1363 case TYPE_PASCAL:
1364 case TYPE_PASCAL_16:
1365 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1366 break;
1367 default:
1368 break;
1369 }
1370 }
1371
1372 /* Output code segment */
1373
1374 fprintf( outfile, "\nstatic struct\n{\n CALLFROM16 call[%d];\n"
1375 " ENTRYPOINT16 entry[%d];\n} Code_Segment = \n{\n {\n",
1376 nTypes, nFuncs );
1377 code_offset = 0;
1378
1379 for ( i = 0; i < nTypes; i++ )
1380 {
1381 char profile[101], *arg;
1382 int argsize = 0;
1383
1384 sprintf( profile, "%s_%s_%s",
1385 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1386 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1387 (typelist[i]->type == TYPE_INTERRUPT) ? "intr" :
1388 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1389 typelist[i]->u.func.arg_types );
1390
1391 if ( typelist[i]->type != TYPE_CDECL )
1392 for ( arg = typelist[i]->u.func.arg_types; *arg; arg++ )
1393 switch ( *arg )
1394 {
1395 case 'w': /* word */
1396 case 's': /* s_word */
1397 argsize += 2;
1398 break;
1399
1400 case 'l': /* long or segmented pointer */
1401 case 'T': /* segmented pointer to null-terminated string */
1402 case 'p': /* linear pointer */
1403 case 't': /* linear pointer to null-terminated string */
1404 argsize += 4;
1405 break;
1406 }
1407
1408 if ( typelist[i]->type == TYPE_INTERRUPT )
1409 argsize += 2;
1410
1411 fprintf( outfile, " CF16_%s( %s_CallFrom16_%s, %d, \"%s\" ),\n",
1412 ( typelist[i]->type == TYPE_REGISTER
1413 || typelist[i]->type == TYPE_INTERRUPT)? "REGS":
1414 typelist[i]->type == TYPE_PASCAL_16? "WORD" : "LONG",
1415 DLLName, profile, argsize, profile );
1416
1417 code_offset += sizeof(CALLFROM16);
1418 }
1419 fprintf( outfile, " },\n {\n" );
1420
1421 odp = OrdinalDefinitions;
1422 for (i = 0; i <= Limit; i++, odp++)
1423 {
1424 switch (odp->type)
1425 {
1426 case TYPE_INVALID:
1427 odp->offset = 0xffff;
1428 break;
1429
1430 case TYPE_ABS:
1431 odp->offset = LOWORD(odp->u.abs.value);
1432 break;
1433
1434 case TYPE_BYTE:
1435 odp->offset = data_offset;
1436 data_offset += StoreVariableCode( data + data_offset, 1, odp);
1437 break;
1438
1439 case TYPE_WORD:
1440 odp->offset = data_offset;
1441 data_offset += StoreVariableCode( data + data_offset, 2, odp);
1442 break;
1443
1444 case TYPE_LONG:
1445 odp->offset = data_offset;
1446 data_offset += StoreVariableCode( data + data_offset, 4, odp);
1447 break;
1448
1449 case TYPE_REGISTER:
1450 case TYPE_INTERRUPT:
1451 case TYPE_CDECL:
1452 case TYPE_PASCAL:
1453 case TYPE_PASCAL_16:
1454 case TYPE_STUB:
1455 type = bsearch( &odp, typelist, nTypes, sizeof(ORDDEF *), Spec16TypeCompare );
1456 assert( type );
1457
1458 fprintf( outfile, " /* %s.%d */ ", DLLName, i );
1459 fprintf( outfile, "EP( %s, %d /* %s_%s_%s */ ),\n",
1460 odp->u.func.link_name,
1461 (type-typelist)*sizeof(CALLFROM16) -
1462 (code_offset + sizeof(ENTRYPOINT16)),
1463 (odp->type == TYPE_CDECL) ? "c" : "p",
1464 (odp->type == TYPE_REGISTER) ? "regs" :
1465 (odp->type == TYPE_INTERRUPT) ? "intr" :
1466 (odp->type == TYPE_PASCAL_16) ? "word" : "long",
1467 odp->u.func.arg_types );
1468
1469 odp->offset = code_offset;
1470 code_offset += sizeof(ENTRYPOINT16);
1471 break;
1472
1473 default:
1474 fprintf(stderr,"build: function type %d not available for Win16\n",
1475 odp->type);
1476 return -1;
1477 }
1478 }
1479
1480 fprintf( outfile, " }\n};\n" );
1481
1482 /* Output data segment */
1483
1484 DumpBytes( outfile, data, data_offset, "Data_Segment" );
1485
1486 /* Build the module */
1487
1488 module_size = BuildModule16( outfile, code_offset, data_offset );
1489
1490 /* Output the DLL descriptor */
1491
1492 fprintf( outfile, "\nWIN16_DESCRIPTOR %s_Descriptor = \n{\n", DLLName );
1493 fprintf( outfile, " \"%s\",\n", DLLName );
1494 fprintf( outfile, " Module,\n" );
1495 fprintf( outfile, " sizeof(Module),\n" );
1496 fprintf( outfile, " (BYTE *)&Code_Segment,\n" );
1497 fprintf( outfile, " (BYTE *)Data_Segment\n" );
1498 fprintf( outfile, "};\n" );
1499
1500 return 0;
1501 }
1502
1503
1504 /*******************************************************************
1505 * BuildSpecFile
1506 *
1507 * Build an assembly file from a spec file.
1508 */
1509 static int BuildSpecFile( FILE *outfile, char *specname )
1510 {
1511 SpecName = specname;
1512 SpecFp = fopen( specname, "r");
1513 if (SpecFp == NULL)
1514 {
1515 fprintf(stderr, "Could not open specification file, '%s'\n", specname);
1516 return -1;
1517 }
1518
1519 if (ParseTopLevel() < 0) return -1;
1520
1521 switch(SpecType)
1522 {
1523 case SPEC_WIN16:
1524 return BuildSpec16File( specname, outfile );
1525 case SPEC_WIN32:
1526 return BuildSpec32File( specname, outfile );
1527 default:
1528 fprintf( stderr, "%s: Missing 'type' declaration\n", specname );
1529 return -1;
1530 }
1531 }
1532
1533
1534 /*******************************************************************
1535 * BuildCallFrom16Func
1536 *
1537 * Build a 16-bit-to-Wine callback glue function.
1538 *
1539 * The generated routines are intended to be used as argument conversion
1540 * routines to be called by the CallFrom16... core. Thus, the prototypes of
1541 * the generated routines are (see also CallFrom16):
1542 *
1543 * extern WORD WINAPI PREFIX_CallFrom16_C_word_xxx( FARPROC func, LPBYTE args );
1544 * extern LONG WINAPI PREFIX_CallFrom16_C_long_xxx( FARPROC func, LPBYTE args );
1545 * extern void WINAPI PREFIX_CallFrom16_C_regs_xxx( FARPROC func, LPBYTE args,
1546 * CONTEXT86 *context );
1547 * extern void WINAPI PREFIX_CallFrom16_C_intr_xxx( FARPROC func, LPBYTE args,
1548 * CONTEXT86 *context );
1549 *
1550 * where 'C' is the calling convention ('p' for pascal or 'c' for cdecl),
1551 * and each 'x' is an argument ('w'=word, 's'=signed word, 'l'=long,
1552 * 'p'=linear pointer, 't'=linear pointer to null-terminated string,
1553 * 'T'=segmented pointer to null-terminated string).
1554 *
1555 * The generated routines fetch the arguments from the 16-bit stack (pointed
1556 * to by 'args'); the offsets of the single argument values are computed
1557 * according to the calling convention and the argument types. Then, the
1558 * 32-bit entry point is called with these arguments.
1559 *
1560 * For register functions, the arguments (if present) are converted just
1561 * the same as for normal functions, but in addition the CONTEXT86 pointer
1562 * filled with the current register values is passed to the 32-bit routine.
1563 * (An 'intr' interrupt handler routine is treated exactly like a register
1564 * routine, except that upon return, the flags word pushed onto the stack
1565 * by the interrupt is removed by the 16-bit call stub.)
1566 *
1567 */
1568 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local )
1569 {
1570 int i, pos, argsize = 0;
1571 int short_ret = 0;
1572 int reg_func = 0;
1573 int usecdecl = 0;
1574 char *args = profile + 7;
1575 char *ret_type;
1576
1577 /* Parse function type */
1578
1579 if (!strncmp( "c_", profile, 2 )) usecdecl = 1;
1580 else if (strncmp( "p_", profile, 2 ))
1581 {
1582 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1583 return;
1584 }
1585
1586 if (!strncmp( "word_", profile + 2, 5 )) short_ret = 1;
1587 else if (!strncmp( "regs_", profile + 2, 5 )) reg_func = 1;
1588 else if (!strncmp( "intr_", profile + 2, 5 )) reg_func = 2;
1589 else if (strncmp( "long_", profile + 2, 5 ))
1590 {
1591 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1592 return;
1593 }
1594
1595 for ( i = 0; args[i]; i++ )
1596 switch ( args[i] )
1597 {
1598 case 'w': /* word */
1599 case 's': /* s_word */
1600 argsize += 2;
1601 break;
1602
1603 case 'l': /* long or segmented pointer */
1604 case 'T': /* segmented pointer to null-terminated string */
1605 case 'p': /* linear pointer */
1606 case 't': /* linear pointer to null-terminated string */
1607 argsize += 4;
1608 break;
1609 }
1610
1611 ret_type = reg_func? "void" : short_ret? "WORD" : "LONG";
1612
1613 fprintf( outfile, "typedef %s WINAPI (*proc_%s_t)( ",
1614 ret_type, profile );
1615 args = profile + 7;
1616 for ( i = 0; args[i]; i++ )
1617 {
1618 if ( i ) fprintf( outfile, ", " );
1619 switch (args[i])
1620 {
1621 case 'w': fprintf( outfile, "WORD" ); break;
1622 case 's': fprintf( outfile, "INT16" ); break;
1623 case 'l': case 'T': fprintf( outfile, "LONG" ); break;
1624 case 'p': case 't': fprintf( outfile, "LPVOID" ); break;
1625 }
1626 }
1627 if ( reg_func )
1628 fprintf( outfile, "%sstruct _CONTEXT86 *", i? ", " : "" );
1629 else if ( !i )
1630 fprintf( outfile, "void" );
1631 fprintf( outfile, " );\n" );
1632
1633 fprintf( outfile, "%s%s WINAPI %s_CallFrom16_%s( FARPROC proc, LPBYTE args%s )\n{\n",
1634 local? "static " : "", ret_type, prefix, profile,
1635 reg_func? ", struct _CONTEXT86 *context" : "" );
1636
1637 fprintf( outfile, " %s((proc_%s_t) proc) (\n",
1638 reg_func? "" : "return ", profile );
1639 args = profile + 7;
1640 pos = !usecdecl? argsize : 0;
1641 for ( i = 0; args[i]; i++ )
1642 {
1643 if ( i ) fprintf( outfile, ",\n" );
1644 fprintf( outfile, " " );
1645 switch (args[i])
1646 {
1647 case 'w': /* word */
1648 if ( !usecdecl ) pos -= 2;
1649 fprintf( outfile, "*(WORD *)(args+%d)", pos );
1650 if ( usecdecl ) pos += 2;
1651 break;
1652
1653 case 's': /* s_word */
1654 if ( !usecdecl ) pos -= 2;
1655 fprintf( outfile, "*(INT16 *)(args+%d)", pos );
1656 if ( usecdecl ) pos += 2;
1657 break;
1658
1659 case 'l': /* long or segmented pointer */
1660 case 'T': /* segmented pointer to null-terminated string */
1661 if ( !usecdecl ) pos -= 4;
1662 fprintf( outfile, "*(LONG *)(args+%d)", pos );
1663 if ( usecdecl ) pos += 4;
1664 break;
1665
1666 case 'p': /* linear pointer */
1667 case 't': /* linear pointer to null-terminated string */
1668 if ( !usecdecl ) pos -= 4;
1669 fprintf( outfile, "PTR_SEG_TO_LIN( *(SEGPTR *)(args+%d) )", pos );
1670 if ( usecdecl ) pos += 4;
1671 break;
1672
1673 default:
1674 fprintf( stderr, "Unknown arg type '%c'\n", args[i] );
1675 }
1676 }
1677 if ( reg_func )
1678 fprintf( outfile, "%s context", i? ",\n" : "" );
1679 fprintf( outfile, " );\n}\n\n" );
1680 }
1681
1682 /*******************************************************************
1683 * BuildCallTo16Func
1684 *
1685 * Build a Wine-to-16-bit callback glue function.
1686 *
1687 * Prototypes for the CallTo16 functions:
1688 * extern WORD CALLBACK PREFIX_CallTo16_word_xxx( FARPROC16 func, args... );
1689 * extern LONG CALLBACK PREFIX_CallTo16_long_xxx( FARPROC16 func, args... );
1690 *
1691 * These routines are provided solely for convenience; they simply
1692 * write the arguments onto the 16-bit stack, and call the appropriate
1693 * CallTo16... core routine.
1694 *
1695 * If you have more sophisticated argument conversion requirements than
1696 * are provided by these routines, you might as well call the core
1697 * routines by yourself.
1698 *
1699 */
1700 static void BuildCallTo16Func( FILE *outfile, char *profile, char *prefix )
1701 {
1702 char *args = profile + 5;
1703 int i, argsize = 0, short_ret = 0;
1704
1705 if (!strncmp( "word_", profile, 5 )) short_ret = 1;
1706 else if (strncmp( "long_", profile, 5 ))
1707 {
1708 fprintf( stderr, "Invalid function name '%s'.\n", profile );
1709 exit(1);
1710 }
1711
1712 fprintf( outfile, "%s %s_CallTo16_%s( FARPROC16 proc",
1713 short_ret? "WORD" : "LONG", prefix, profile );
1714 args = profile + 5;
1715 for ( i = 0; args[i]; i++ )
1716 {
1717 fprintf( outfile, ", " );
1718 switch (args[i])
1719 {
1720 case 'w': fprintf( outfile, "WORD" ); argsize += 2; break;
1721 case 'l': fprintf( outfile, "LONG" ); argsize += 4; break;
1722 }
1723 fprintf( outfile, " arg%d", i+1 );
1724 }
1725 fprintf( outfile, " )\n{\n" );
1726
1727 if ( argsize > 0 )
1728 fprintf( outfile, " LPBYTE args = (LPBYTE)CURRENT_STACK16;\n" );
1729
1730 args = profile + 5;
1731 for ( i = 0; args[i]; i++ )
1732 {
1733 switch (args[i])
1734 {
1735 case 'w': fprintf( outfile, " args -= sizeof(WORD); *(WORD" ); break;
1736 case 'l': fprintf( outfile, " args -= sizeof(LONG); *(LONG" ); break;
1737 default: fprintf( stderr, "Unexpected case '%c' in BuildCallTo16Func\n",
1738 args[i] );
1739 }
1740 fprintf( outfile, " *)args = arg%d;\n", i+1 );
1741 }
1742
1743 fprintf( outfile, " return CallTo16%s( proc, %d );\n}\n\n",
1744 short_ret? "Word" : "Long", argsize );
1745 }
1746
1747
1748
1749 /*******************************************************************
1750 * BuildCallFrom16Core
1751 *
1752 * This routine builds the core routines used in 16->32 thunks:
1753 * CallFrom16Word, CallFrom16Long, CallFrom16Register, and CallFrom16Thunk.
1754 *
1755 * These routines are intended to be called via a far call (with 32-bit
1756 * operand size) from 16-bit code. The 16-bit code stub must push %bp,
1757 * the 32-bit entry point to be called, and the argument conversion
1758 * routine to be used (see stack layout below).
1759 *
1760 * The core routine completes the STACK16FRAME on the 16-bit stack and
1761 * switches to the 32-bit stack. Then, the argument conversion routine
1762 * is called; it gets passed the 32-bit entry point and a pointer to the
1763 * 16-bit arguments (on the 16-bit stack) as parameters. (You can either
1764 * use conversion routines automatically generated by BuildCallFrom16,
1765 * or write your own for special purposes.)
1766 *
1767 * The conversion routine must call the 32-bit entry point, passing it
1768 * the converted arguments, and return its return value to the core.
1769 * After the conversion routine has returned, the core switches back
1770 * to the 16-bit stack, converts the return value to the DX:AX format
1771 * (CallFrom16Long), and returns to the 16-bit call stub. All parameters,
1772 * including %bp, are popped off the stack.
1773 *
1774 * The 16-bit call stub now returns to the caller, popping the 16-bit
1775 * arguments if necessary (pascal calling convention).
1776 *
1777 * In the case of a 'register' function, CallFrom16Register fills a
1778 * CONTEXT86 structure with the values all registers had at the point
1779 * the first instruction of the 16-bit call stub was about to be
1780 * executed. A pointer to this CONTEXT86 is passed as third parameter
1781 * to the argument conversion routine, which typically passes it on
1782 * to the called 32-bit entry point.
1783 *
1784 * CallFrom16Thunk is a special variant used by the implementation of
1785 * the Win95 16->32 thunk functions C16ThkSL and C16ThkSL01 and is
1786 * implemented as follows:
1787 * On entry, the EBX register is set up to contain a flat pointer to the
1788 * 16-bit stack such that EBX+22 points to the first argument.
1789 * Then, the entry point is called, while EBP is set up to point
1790 * to the return address (on the 32-bit stack).
1791 * The called function returns with CX set to the number of bytes
1792 * to be popped of the caller's stack.
1793 *
1794 * Stack layout upon entry to the core routine (STACK16FRAME):
1795 * ... ...
1796 * (sp+24) word first 16-bit arg
1797 * (sp+22) word cs
1798 * (sp+20) word ip
1799 * (sp+18) word bp
1800 * (sp+14) long 32-bit entry point (reused for Win16 mutex recursion count)
1801 * (sp+12) word ip of actual entry point (necessary for relay debugging)
1802 * (sp+8) long relay (argument conversion) function entry point
1803 * (sp+4) long cs of 16-bit entry point
1804 * (sp) long ip of 16-bit entry point
1805 *
1806 * Added on the stack:
1807 * (sp-2) word saved gs
1808 * (sp-4) word saved fs
1809 * (sp-6) word saved es
1810 * (sp-8) word saved ds
1811 * (sp-12) long saved ebp
1812 * (sp-16) long saved ecx
1813 * (sp-20) long saved edx
1814 * (sp-24) long saved previous stack
1815 */
1816 static void BuildCallFrom16Core( FILE *outfile, int reg_func, int thunk, int short_ret )
1817 {
1818 char *name = thunk? "Thunk" : reg_func? "Register" : short_ret? "Word" : "Long";
1819
1820 /* Function header */
1821 fprintf( outfile, "\n\t.align 4\n" );
1822 #ifdef USE_STABS
1823 fprintf( outfile, ".stabs \"CallFrom16%s:F1\",36,0,0," PREFIX "CallFrom16%s\n",
1824 name, name);
1825 #endif
1826 fprintf( outfile, "\t.globl " PREFIX "CallFrom16%s\n", name );
1827 fprintf( outfile, PREFIX "CallFrom16%s:\n", name );
1828
1829 /* Create STACK16FRAME (except STACK32FRAME link) */
1830 fprintf( outfile, "\tpushw %%gs\n" );
1831 fprintf( outfile, "\tpushw %%fs\n" );
1832 fprintf( outfile, "\tpushw %%es\n" );
1833 fprintf( outfile, "\tpushw %%ds\n" );
1834 fprintf( outfile, "\tpushl %%ebp\n" );
1835 fprintf( outfile, "\tpushl %%ecx\n" );
1836 fprintf( outfile, "\tpushl %%edx\n" );
1837
1838 /* Save original EFlags register */
1839 fprintf( outfile, "\tpushfl\n" );
1840
1841 if ( UsePIC )
1842 {
1843 /* Get Global Offset Table into %ecx */
1844 fprintf( outfile, "\tcall .LCallFrom16%s.getgot1\n", name );
1845 fprintf( outfile, ".LCallFrom16%s.getgot1:\n", name );
1846 fprintf( outfile, "\tpopl %%ecx\n" );
1847 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot1], %%ecx\n", name );
1848 }
1849
1850 /* Load 32-bit segment registers */
1851 fprintf( outfile, "\tmovw $0x%04x, %%dx\n", Data_Selector );
1852 #ifdef __svr4__
1853 fprintf( outfile, "\tdata16\n");
1854 #endif
1855 fprintf( outfile, "\tmovw %%dx, %%ds\n" );
1856 #ifdef __svr4__
1857 fprintf( outfile, "\tdata16\n");
1858 #endif
1859 fprintf( outfile, "\tmovw %%dx, %%es\n" );
1860
1861 if ( UsePIC )
1862 {
1863 fprintf( outfile, "\tmovl " PREFIX "SYSLEVEL_Win16CurrentTeb@GOT(%%ecx), %%edx\n" );
1864 fprintf( outfile, "\tmovw (%%edx), %%fs\n" );
1865 }
1866 else
1867 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb, %%fs\n" );
1868
1869 /* Get address of ldt_copy array into %ecx */
1870 if ( UsePIC )
1871 fprintf( outfile, "\tmovl " PREFIX "ldt_copy@GOT(%%ecx), %%ecx\n" );
1872 else
1873 fprintf( outfile, "\tmovl $" PREFIX "ldt_copy, %%ecx\n" );
1874
1875 /* Translate STACK16FRAME base to flat offset in %edx */
1876 fprintf( outfile, "\tmovw %%ss, %%dx\n" );
1877 fprintf( outfile, "\tandl $0xfff8, %%edx\n" );
1878 fprintf( outfile, "\tmovl (%%ecx,%%edx), %%edx\n" );
1879 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
1880 fprintf( outfile, "\tleal (%%ebp,%%edx), %%edx\n" );
1881
1882 /* Get saved flags into %ecx */
1883 fprintf( outfile, "\tpopl %%ecx\n" );
1884
1885 /* Get the 32-bit stack pointer from the TEB and complete STACK16FRAME */
1886 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d), %%ebp\n", STACKOFFSET );
1887 fprintf( outfile, "\tpushl %%ebp\n" );
1888
1889 /* Switch stacks */
1890 #ifdef __svr4__
1891 fprintf( outfile,"\tdata16\n");
1892 #endif
1893 fprintf( outfile, "\t.byte 0x64\n\tmovw %%ss, (%d)\n", STACKOFFSET + 2 );
1894 fprintf( outfile, "\t.byte 0x64\n\tmovw %%sp, (%d)\n", STACKOFFSET );
1895 fprintf( outfile, "\tpushl %%ds\n" );
1896 fprintf( outfile, "\tpopl %%ss\n" );
1897 fprintf( outfile, "\tmovl %%ebp, %%esp\n" );
1898 fprintf( outfile, "\taddl $%d, %%ebp\n", STRUCTOFFSET(STACK32FRAME, ebp) );
1899
1900
1901 /* At this point:
1902 STACK16FRAME is completely set up
1903 DS, ES, SS: flat data segment
1904 FS: current TEB
1905 ESP: points to last STACK32FRAME
1906 EBP: points to ebp member of last STACK32FRAME
1907 EDX: points to current STACK16FRAME
1908 ECX: contains saved flags
1909 all other registers: unchanged */
1910
1911 /* Special case: C16ThkSL stub */
1912 if ( thunk )
1913 {
1914 /* Set up registers as expected and call thunk */
1915 fprintf( outfile, "\tleal %d(%%edx), %%ebx\n", sizeof(STACK16FRAME)-22 );
1916 fprintf( outfile, "\tleal -4(%%esp), %%ebp\n" );
1917
1918 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(entry_point) );
1919
1920 /* Switch stack back */
1921 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
1922 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
1923 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
1924
1925 /* Restore registers and return directly to caller */
1926 fprintf( outfile, "\taddl $8, %%esp\n" );
1927 fprintf( outfile, "\tpopl %%ebp\n" );
1928 fprintf( outfile, "\tpopw %%ds\n" );
1929 fprintf( outfile, "\tpopw %%es\n" );
1930 fprintf( outfile, "\tpopw %%fs\n" );
1931 fprintf( outfile, "\tpopw %%gs\n" );
1932 fprintf( outfile, "\taddl $20, %%esp\n" );
1933
1934 fprintf( outfile, "\txorb %%ch, %%ch\n" );
1935 fprintf( outfile, "\tpopl %%ebx\n" );
1936 fprintf( outfile, "\taddw %%cx, %%sp\n" );
1937 fprintf( outfile, "\tpush %%ebx\n" );
1938
1939 fprintf( outfile, "\t.byte 0x66\n" );
1940 fprintf( outfile, "\tlret\n" );
1941
1942 return;
1943 }
1944
1945
1946 /* Build register CONTEXT */
1947 if ( reg_func )
1948 {
1949 fprintf( outfile, "\tsubl $%d, %%esp\n", sizeof(CONTEXT86) );
1950
1951 fprintf( outfile, "\tmovl %%ecx, %d(%%esp)\n", CONTEXTOFFSET(EFlags) );
1952
1953 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eax) );
1954 fprintf( outfile, "\tmovl %%ebx, %d(%%esp)\n", CONTEXTOFFSET(Ebx) );
1955 fprintf( outfile, "\tmovl %%esi, %d(%%esp)\n", CONTEXTOFFSET(Esi) );
1956 fprintf( outfile, "\tmovl %%edi, %d(%%esp)\n", CONTEXTOFFSET(Edi) );
1957
1958 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ebp) );
1959 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ebp) );
1960 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ecx) );
1961 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ecx) );
1962 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(edx) );
1963 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Edx) );
1964
1965 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ds) );
1966 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegDs) );
1967 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(es) );
1968 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegEs) );
1969 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(fs) );
1970 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegFs) );
1971 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(gs) );
1972 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegGs) );
1973
1974 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(cs) );
1975 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegCs) );
1976 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ip) );
1977 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eip) );
1978
1979 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET+2 );
1980 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegSs) );
1981 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET );
1982 fprintf( outfile, "\taddl $%d, %%eax\n", STACK16OFFSET(ip) );
1983 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Esp) );
1984 #if 0
1985 fprintf( outfile, "\tfsave %d(%%esp)\n", CONTEXTOFFSET(FloatSave) );
1986 #endif
1987
1988 /* Push address of CONTEXT86 structure -- popped by the relay routine */
1989 fprintf( outfile, "\tpushl %%esp\n" );
1990 }
1991
1992
1993 /* Print debug info before call */
1994 if ( debugging )
1995 {
1996 if ( UsePIC )
1997 {
1998 fprintf( outfile, "\tpushl %%ebx\n" );
1999
2000 /* Get Global Offset Table into %ebx (for PLT call) */
2001 fprintf( outfile, "\tcall .LCallFrom16%s.getgot2\n", name );
2002 fprintf( outfile, ".LCallFrom16%s.getgot2:\n", name );
2003 fprintf( outfile, "\tpopl %%ebx\n" );
2004 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot2], %%ebx\n", name );
2005 }
2006
2007 fprintf( outfile, "\tpushl %%edx\n" );
2008 if ( reg_func )
2009 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
2010 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
2011 else
2012 fprintf( outfile, "\tpushl $0\n" );
2013
2014 if ( UsePIC )
2015 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16@PLT\n ");
2016 else
2017 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16\n ");
2018
2019 fprintf( outfile, "\tpopl %%edx\n" );
2020 fprintf( outfile, "\tpopl %%edx\n" );
2021
2022 if ( UsePIC )
2023 fprintf( outfile, "\tpopl %%ebx\n" );
2024 }
2025
2026 /* Call relay routine (which will call the API entry point) */
2027 fprintf( outfile, "\tleal %d(%%edx), %%eax\n", sizeof(STACK16FRAME) );
2028 fprintf( outfile, "\tpushl %%eax\n" );
2029 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK16OFFSET(entry_point) );
2030 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(relay) );
2031
2032 /* Print debug info after call */
2033 if ( debugging )
2034 {
2035 if ( UsePIC )
2036 {
2037 fprintf( outfile, "\tpushl %%ebx\n" );
2038
2039 /* Get Global Offset Table into %ebx (for PLT call) */
2040 fprintf( outfile, "\tcall .LCallFrom16%s.getgot3\n", name );
2041 fprintf( outfile, ".LCallFrom16%s.getgot3:\n", name );
2042 fprintf( outfile, "\tpopl %%ebx\n" );
2043 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot3], %%ebx\n", name );
2044 }
2045
2046 fprintf( outfile, "\tpushl %%eax\n" );
2047 if ( reg_func )
2048 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
2049 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
2050 else
2051 fprintf( outfile, "\tpushl $0\n" );
2052
2053 if ( UsePIC )
2054 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret@PLT\n ");
2055 else
2056 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret\n ");
2057
2058 fprintf( outfile, "\tpopl %%eax\n" );
2059 fprintf( outfile, "\tpopl %%eax\n" );
2060
2061 if ( UsePIC )
2062 fprintf( outfile, "\tpopl %%ebx\n" );
2063 }
2064
2065
2066 if ( reg_func )
2067 {
2068 fprintf( outfile, "\tmovl %%esp, %%ebx\n" );
2069
2070 /* Switch stack back */
2071 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2072 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2073 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2074
2075 /* Get return address to CallFrom16 stub */
2076 fprintf( outfile, "\taddw $%d, %%sp\n", STACK16OFFSET(callfrom_ip)-4 );
2077 fprintf( outfile, "\tpopl %%eax\n" );
2078 fprintf( outfile, "\tpopl %%edx\n" );
2079
2080 /* Restore all registers from CONTEXT */
2081 fprintf( outfile, "\tmovw %d(%%ebx), %%ss\n", CONTEXTOFFSET(SegSs) );
2082 fprintf( outfile, "\tmovl %d(%%ebx), %%esp\n", CONTEXTOFFSET(Esp) );
2083 fprintf( outfile, "\taddl $4, %%esp\n" ); /* room for final return address */
2084
2085 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(SegCs) );
2086 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(Eip) );
2087 fprintf( outfile, "\tpushl %%edx\n" );
2088 fprintf( outfile, "\tpushl %%eax\n" );
2089 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(EFlags) );
2090 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(SegDs) );
2091
2092 fprintf( outfile, "\tmovw %d(%%ebx), %%es\n", CONTEXTOFFSET(SegEs) );
2093 fprintf( outfile, "\tmovw %d(%%ebx), %%fs\n", CONTEXTOFFSET(SegFs) );
2094 fprintf( outfile, "\tmovw %d(%%ebx), %%gs\n", CONTEXTOFFSET(SegGs) );
2095
2096 fprintf( outfile, "\tmovl %d(%%ebx), %%ebp\n", CONTEXTOFFSET(Ebp) );
2097 fprintf( outfile, "\tmovl %d(%%ebx), %%esi\n", CONTEXTOFFSET(Esi) );
2098 fprintf( outfile, "\tmovl %d(%%ebx), %%edi\n", CONTEXTOFFSET(Edi) );
2099 fprintf( outfile, "\tmovl %d(%%ebx), %%eax\n", CONTEXTOFFSET(Eax) );
2100 fprintf( outfile, "\tmovl %d(%%ebx), %%edx\n", CONTEXTOFFSET(Edx) );
2101 fprintf( outfile, "\tmovl %d(%%ebx), %%ecx\n", CONTEXTOFFSET(Ecx) );
2102 fprintf( outfile, "\tmovl %d(%%ebx), %%ebx\n", CONTEXTOFFSET(Ebx) );
2103
2104 fprintf( outfile, "\tpopl %%ds\n" );
2105 fprintf( outfile, "\tpopfl\n" );
2106 fprintf( outfile, "\tlret\n" );
2107 }
2108 else
2109 {
2110 /* Switch stack back */
2111 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2112 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2113 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2114
2115 /* Restore registers */
2116 fprintf( outfile, "\tpopl %%edx\n" );
2117 fprintf( outfile, "\tpopl %%ecx\n" );
2118 fprintf( outfile, "\tpopl %%ebp\n" );
2119 fprintf( outfile, "\tpopw %%ds\n" );
2120 fprintf( outfile, "\tpopw %%es\n" );
2121 fprintf( outfile, "\tpopw %%fs\n" );
2122 fprintf( outfile, "\tpopw %%gs\n" );
2123
2124 /* Prepare return value and set flags accordingly */
2125 if ( !short_ret )
2126 fprintf( outfile, "\tshldl $16, %%eax, %%edx\n" );
2127 fprintf( outfile, "\torl %%eax, %%eax\n" );
2128
2129 /* Return to return stub which will return to caller */
2130 fprintf( outfile, "\tlret $12\n" );
2131 }
2132 }
2133
2134
2135 /*******************************************************************
2136 * BuildCallTo16Core
2137 *
2138 * This routine builds the core routines used in 32->16 thunks:
2139 *
2140 * extern void CALLBACK CallTo16Word( SEGPTR target, int nb_args );
2141 * extern void CALLBACK CallTo16Long( SEGPTR target, int nb_args );
2142 * extern void CALLBACK CallTo16RegisterShort( const CONTEXT86 *context, int nb_args );
2143 * extern void CALLBACK CallTo16RegisterLong ( const CONTEXT86 *context, int nb_args );
2144 *
2145 * These routines can be called directly from 32-bit code.
2146 *
2147 * All routines expect that the 16-bit stack contents (arguments) were
2148 * already set up by the caller; nb_args must contain the number of bytes
2149 * to be conserved. The 16-bit SS:SP will be set accordinly.
2150 *
2151 * All other registers are either taken from the CONTEXT86 structure
2152 * or else set to default values. The target routine address is either
2153 * given directly or taken from the CONTEXT86.
2154 *
2155 * If you want to call a 16-bit routine taking only standard argument types
2156 * (WORD and LONG), you can also have an appropriate argument conversion
2157 * stub automatically generated (see BuildCallTo16); you'd then call this
2158 * stub, which in turn would prepare the 16-bit stack and call the appropiate
2159 * core routine.
2160 *
2161 */
2162
2163 static void BuildCallTo16Core( FILE *outfile, int short_ret, int reg_func )
2164 {
2165 char *name = reg_func == 2 ? "RegisterLong" :
2166 reg_func == 1 ? "RegisterShort" :
2167 short_ret? "Word" : "Long";
2168
2169 /* Function header */
2170 fprintf( outfile, "\n\t.align 4\n" );
2171 #ifdef USE_STABS
2172 fprintf( outfile, ".stabs \"CallTo16%s:F1\",36,0,0," PREFIX "CallTo16%s\n",
2173 name, name);
2174 #endif
2175 fprintf( outfile, "\t.globl " PREFIX "CallTo16%s\n", name );
2176 fprintf( outfile, PREFIX "CallTo16%s:\n", name );
2177
2178 /* Function entry sequence */
2179 fprintf( outfile, "\tpushl %%ebp\n" );
2180 fprintf( outfile, "\tmovl %%esp, %%ebp\n" );
2181
2182 /* Save the 32-bit registers */
2183 fprintf( outfile, "\tpushl %%ebx\n" );
2184 fprintf( outfile, "\tpushl %%ecx\n" );
2185 fprintf( outfile, "\tpushl %%edx\n" );
2186 fprintf( outfile, "\tpushl %%esi\n" );
2187 fprintf( outfile, "\tpushl %%edi\n" );
2188
2189 if ( UsePIC )
2190 {
2191 /* Get Global Offset Table into %ebx */
2192 fprintf( outfile, "\tcall .LCallTo16%s.getgot1\n", name );
2193 fprintf( outfile, ".LCallTo16%s.getgot1:\n", name );
2194 fprintf( outfile, "\tpopl %%ebx\n" );
2195 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot1], %%ebx\n", name );
2196 }
2197
2198 /* Enter Win16 Mutex */
2199 if ( UsePIC )
2200 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock@PLT\n" );
2201 else
2202 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock\n" );
2203
2204 /* Print debugging info */
2205 if (debugging)
2206 {
2207 /* Push flags, number of arguments, and target */
2208 fprintf( outfile, "\tpushl $%d\n", reg_func );
2209 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2210 fprintf( outfile, "\tpushl 8(%%ebp)\n" );
2211
2212 if ( UsePIC )
2213 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16@PLT\n" );
2214 else
2215 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16\n" );
2216
2217 fprintf( outfile, "\taddl $12, %%esp\n" );
2218 }
2219
2220 /* Get return address */
2221 if ( UsePIC )
2222 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr@GOTOFF(%%ebx), %%ecx\n" );
2223 else
2224 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr, %%ecx\n" );
2225
2226 /* Call the actual CallTo16 routine (simulate a lcall) */
2227 fprintf( outfile, "\tpushl %%cs\n" );
2228 fprintf( outfile, "\tcall .LCallTo16%s\n", name );
2229
2230 /* Convert and push return value */
2231 if ( short_ret )
2232 {
2233 fprintf( outfile, "\tmovzwl %%ax, %%eax\n" );
2234 fprintf( outfile, "\tpushl %%eax\n" );
2235 }
2236 else if ( reg_func != 2 )
2237 {
2238 fprintf( outfile, "\tshll $16,%%edx\n" );
2239 fprintf( outfile, "\tmovw %%ax,%%dx\n" );
2240 fprintf( outfile, "\tpushl %%edx\n" );
2241 }
2242 else
2243 fprintf( outfile, "\tpushl %%eax\n" );
2244
2245 if ( UsePIC )
2246 {
2247 /* Get Global Offset Table into %ebx (might have been overwritten) */
2248 fprintf( outfile, "\tcall .LCallTo16%s.getgot2\n", name );
2249 fprintf( outfile, ".LCallTo16%s.getgot2:\n", name );
2250 fprintf( outfile, "\tpopl %%ebx\n" );
2251 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot2], %%ebx\n", name );
2252 }
2253
2254 /* Print debugging info */
2255 if (debugging)
2256 {
2257 if ( UsePIC )
2258 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret@PLT\n" );
2259 else
2260 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret\n" );
2261 }
2262
2263 /* Leave Win16 Mutex */
2264 if ( UsePIC )
2265 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock@PLT\n" );
2266 else
2267 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock\n" );
2268
2269 /* Get return value */
2270 fprintf( outfile, "\tpopl %%eax\n" );
2271
2272 /* Restore the 32-bit registers */
2273 fprintf( outfile, "\tpopl %%edi\n" );
2274 fprintf( outfile, "\tpopl %%esi\n" );
2275 fprintf( outfile, "\tpopl %%edx\n" );
2276 fprintf( outfile, "\tpopl %%ecx\n" );
2277 fprintf( outfile, "\tpopl %%ebx\n" );
2278
2279 /* Function exit sequence */
2280 fprintf( outfile, "\tpopl %%ebp\n" );
2281 fprintf( outfile, "\tret $8\n" );
2282
2283
2284 /* Start of the actual CallTo16 routine */
2285
2286 fprintf( outfile, ".LCallTo16%s:\n", name );
2287
2288 /* Complete STACK32FRAME */
2289 fprintf( outfile, "\t.byte 0x64\n\tpushl (%d)\n", STACKOFFSET );
2290 fprintf( outfile, "\tmovl %%esp,%%edx\n" );
2291
2292 /* Switch to the 16-bit stack */
2293 #ifdef __svr4__
2294 fprintf( outfile,"\tdata16\n");
2295 #endif
2296 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2);
2297 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET );
2298 fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET );
2299
2300 /* Make %bp point to the previous stackframe (built by CallFrom16) */
2301 fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" );
2302 fprintf( outfile, "\tleal %d(%%ebp),%%ebp\n", STACK16OFFSET(bp) );
2303
2304 /* Add the specified offset to the new sp */
2305 fprintf( outfile, "\tsubw %d(%%edx), %%sp\n", STACK32OFFSET(nb_args) );
2306
2307 /* Push the return address
2308 * With sreg suffix, we push 16:16 address (normal lret)
2309 * With lreg suffix, we push 16:32 address (0x66 lret, for KERNEL32_45)
2310 */
2311 if (reg_func != 2)
2312 fprintf( outfile, "\tpushl %%ecx\n" );
2313 else
2314 {
2315 fprintf( outfile, "\tshldl $16, %%ecx, %%eax\n" );
2316 fprintf( outfile, "\tpushw $0\n" );
2317 fprintf( outfile, "\tpushw %%ax\n" );
2318 fprintf( outfile, "\tpushw $0\n" );
2319 fprintf( outfile, "\tpushw %%cx\n" );
2320 }
2321
2322 if (reg_func)
2323 {
2324 /* Push the called routine address */
2325 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", STACK32OFFSET(target) );
2326 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegCs) );
2327 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(Eip) );
2328
2329 /* Get the registers */
2330 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegDs) );
2331 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegEs) );
2332 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2333 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegFs) );
2334 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2335 fprintf( outfile, "\tmovl %d(%%edx),%%ebp\n", CONTEXTOFFSET(Ebp) );
2336 fprintf( outfile, "\tmovl %d(%%edx),%%esi\n", CONTEXTOFFSET(Esi) );
2337 fprintf( outfile, "\tmovl %d(%%edx),%%edi\n", CONTEXTOFFSET(Edi) );
2338 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(Eax) );
2339 fprintf( outfile, "\tmovl %d(%%edx),%%ebx\n", CONTEXTOFFSET(Ebx) );
2340 fprintf( outfile, "\tmovl %d(%%edx),%%ecx\n", CONTEXTOFFSET(Ecx) );
2341 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", CONTEXTOFFSET(Edx) );
2342
2343 /* Get the 16-bit ds */
2344 fprintf( outfile, "\tpopw %%ds\n" );
2345 }
2346 else /* not a register function */
2347 {
2348 /* Push the called routine address */
2349 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK32OFFSET(target) );
2350
2351 /* Set %fs to the value saved by the last CallFrom16 */
2352 fprintf( outfile, "\tmovw %d(%%ebp),%%ax\n", STACK16OFFSET(fs)-STACK16OFFSET(bp) );
2353 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2354
2355 /* Set %ds and %es (and %ax just in case) equal to %ss */
2356 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2357 fprintf( outfile, "\tmovw %%ax,%%ds\n" );
2358 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2359 }
2360
2361 /* Jump to the called routine */
2362 fprintf( outfile, "\t.byte 0x66\n" );
2363 fprintf( outfile, "\tlret\n" );
2364 }
2365
2366 /*******************************************************************
2367 * BuildRet16Func
2368 *
2369 * Build the return code for 16-bit callbacks
2370 */
2371 static void BuildRet16Func( FILE *outfile )
2372 {
2373 /*
2374 * Note: This must reside in the .data section to allow
2375 * run-time relocation of the SYSLEVEL_Win16CurrentTeb symbol
2376 */
2377
2378 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_Ret\n" );
2379 fprintf( outfile, PREFIX "CallTo16_Ret:\n" );
2380
2381 /* Restore 32-bit segment registers */
2382
2383 fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector );
2384 #ifdef __svr4__
2385 fprintf( outfile, "\tdata16\n");
2386 #endif
2387 fprintf( outfile, "\tmovw %%bx,%%ds\n" );
2388 #ifdef __svr4__
2389 fprintf( outfile, "\tdata16\n");
2390 #endif
2391 fprintf( outfile, "\tmovw %%bx,%%es\n" );
2392
2393 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb,%%fs\n" );
2394
2395 /* Restore the 32-bit stack */
2396
2397 #ifdef __svr4__
2398 fprintf( outfile, "\tdata16\n");
2399 #endif
2400 fprintf( outfile, "\tmovw %%bx,%%ss\n" );
2401 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%esp\n", STACKOFFSET );
2402 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2403
2404 /* Return to caller */
2405
2406 fprintf( outfile, "\tlret\n" );
2407
2408 /* Declare the return address variable */
2409
2410 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_RetAddr\n" );
2411 fprintf( outfile, PREFIX "CallTo16_RetAddr:\t.long 0\n" );
2412 }
2413
2414 /*******************************************************************
2415 * BuildCallTo32CBClient
2416 *
2417 * Call a CBClient relay stub from 32-bit code (KERNEL.620).
2418 *
2419 * Since the relay stub is itself 32-bit, this should not be a problem;
2420 * unfortunately, the relay stubs are expected to switch back to a
2421 * 16-bit stack (and 16-bit code) after completion :-(
2422 *
2423 * This would conflict with our 16- vs. 32-bit stack handling, so
2424 * we simply switch *back* to our 32-bit stack before returning to
2425 * the caller ...
2426 *
2427 * The CBClient relay stub expects to be called with the following
2428 * 16-bit stack layout, and with ebp and ebx pointing into the 16-bit
2429 * stack at the designated places:
2430 *
2431 * ...
2432 * (ebp+14) original arguments to the callback routine
2433 * (ebp+10) far return address to original caller
2434 * (ebp+6) Thunklet target address
2435 * (ebp+2) Thunklet relay ID code
2436 * (ebp) BP (saved by CBClientGlueSL)
2437 * (ebp-2) SI (saved by CBClientGlueSL)
2438 * (ebp-4) DI (saved by CBClientGlueSL)
2439 * (ebp-6) DS (saved by CBClientGlueSL)
2440 *
2441 * ... buffer space used by the 16-bit side glue for temp copies
2442 *
2443 * (ebx+4) far return address to 16-bit side glue code
2444 * (ebx) saved 16-bit ss:sp (pointing to ebx+4)
2445 *
2446 * The 32-bit side glue code accesses both the original arguments (via ebp)
2447 * and the temporary copies prepared by the 16-bit side glue (via ebx).
2448 * After completion, the stub will load ss:sp from the buffer at ebx
2449 * and perform a far return to 16-bit code.
2450 *
2451 * To trick the relay stub into returning to us, we replace the 16-bit
2452 * return address to the glue code by a cs:ip pair pointing to our
2453 * return entry point (the original return address is saved first).
2454 * Our return stub thus called will then reload the 32-bit ss:esp and
2455 * return to 32-bit code (by using and ss:esp value that we have also
2456 * pushed onto the 16-bit stack before and a cs:eip values found at
2457 * that position on the 32-bit stack). The ss:esp to be restored is
2458 * found relative to the 16-bit stack pointer at:
2459 *
2460 * (ebx-4) ss (flat)
2461 * (ebx-8) sp (32-bit stack pointer)
2462 *
2463 * The second variant of this routine, CALL32_CBClientEx, which is used
2464 * to implement KERNEL.621, has to cope with yet another problem: Here,
2465 * the 32-bit side directly returns to the caller of the CBClient thunklet,
2466 * restoring registers saved by CBClientGlueSL and cleaning up the stack.
2467 * As we have to return to our 32-bit code first, we have to adapt the
2468 * layout of our temporary area so as to include values for the registers
2469 * that are to be restored, and later (in the implementation of KERNEL.621)
2470 * we *really* restore them. The return stub restores DS, DI, SI, and BP
2471 * from the stack, skips the next 8 bytes (CBClient relay code / target),
2472 * and then performs a lret NN, where NN is the number of arguments to be
2473 * removed. Thus, we prepare our temporary area as follows:
2474 *
2475 * (ebx+22) 16-bit cs (this segment)
2476 * (ebx+20) 16-bit ip ('16-bit' return entry point)
2477 * (ebx+16) 32-bit ss (flat)
2478 * (ebx+12) 32-bit sp (32-bit stack pointer)
2479 * (ebx+10) 16-bit bp (points to ebx+24)
2480 * (ebx+8) 16-bit si (ignored)
2481 * (ebx+6) 16-bit di (ignored)
2482 * (ebx+4) 16-bit ds (we actually use the flat DS here)
2483 * (ebx+2) 16-bit ss (16-bit stack segment)
2484 * (ebx+0) 16-bit sp (points to ebx+4)
2485 *
2486 * Note that we ensure that DS is not changed and remains the flat segment,
2487 * and the 32-bit stack pointer our own return stub needs fits just
2488 * perfectly into the 8 bytes that are skipped by the Windows stub.
2489 * One problem is that we have to determine the number of removed arguments,
2490 * as these have to be really removed in KERNEL.621. Thus, the BP value
2491 * that we place in the temporary area to be restored, contains the value
2492 * that SP would have if no arguments were removed. By comparing the actual
2493 * value of SP with this value in our return stub we can compute the number
2494 * of removed arguments. This is then returned to KERNEL.621.
2495 *
2496 * The stack layout of this function:
2497 * (ebp+20) nArgs pointer to variable receiving nr. of args (Ex only)
2498 * (ebp+16) esi pointer to caller's esi value
2499 * (ebp+12) arg ebp value to be set for relay stub
2500 * (ebp+8) func CBClient relay stub address
2501 * (ebp+4) ret addr
2502 * (ebp) ebp
2503 */
2504 static void BuildCallTo32CBClient( FILE *outfile, BOOL isEx )
2505 {
2506 char *name = isEx? "CBClientEx" : "CBClient";
2507 int size = isEx? 24 : 12;
2508
2509 /* Function header */
2510
2511 fprintf( outfile, "\n\t.align 4\n" );
2512 #ifdef USE_STABS
2513 fprintf( outfile, ".stabs \"CALL32_%s:F1\",36,0,0," PREFIX "CALL32_%s\n",
2514 name, name );
2515 #endif
2516 fprintf( outfile, "\t.globl " PREFIX "CALL32_%s\n", name );
2517 fprintf( outfile, PREFIX "CALL32_%s:\n", name );
2518
2519 /* Entry code */
2520
2521 fprintf( outfile, "\tpushl %%ebp\n" );
2522 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2523 fprintf( outfile, "\tpushl %%edi\n" );
2524 fprintf( outfile, "\tpushl %%esi\n" );
2525 fprintf( outfile, "\tpushl %%ebx\n" );
2526
2527 /* Get the 16-bit stack */
2528
2529 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET);
2530
2531 /* Convert it to a flat address */
2532
2533 fprintf( outfile, "\tshldl $16,%%ebx,%%eax\n" );
2534 fprintf( outfile, "\tandl $0xfff8,%%eax\n" );
2535 fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%esi\n" );
2536 fprintf( outfile, "\tmovw %%bx,%%ax\n" );
2537 fprintf( outfile, "\taddl %%eax,%%esi\n" );
2538
2539 /* Allocate temporary area (simulate STACK16_PUSH) */
2540
2541 fprintf( outfile, "\tpushf\n" );
2542 fprintf( outfile, "\tcld\n" );
2543 fprintf( outfile, "\tleal -%d(%%esi), %%edi\n", size );
2544 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2545 fprintf( outfile, "\trep\n\tmovsb\n" );
2546 fprintf( outfile, "\tpopf\n" );
2547
2548 fprintf( outfile, "\t.byte 0x64\n\tsubw $%d,(%d)\n", size, STACKOFFSET );
2549
2550 fprintf( outfile, "\tpushl %%edi\n" ); /* remember address */
2551
2552 /* Set up temporary area */
2553
2554 if ( !isEx )
2555 {
2556 fprintf( outfile, "\tleal 4(%%edi), %%edi\n" );
2557
2558 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2559 fprintf( outfile, "\tmovl %%eax, -8(%%edi)\n" ); /* 32-bit sp */
2560
2561 fprintf( outfile, "\tmovl %%ss, %%ax\n" );
2562 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2563 fprintf( outfile, "\tmovl %%eax, -4(%%edi)\n" ); /* 32-bit ss */
2564
2565 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 + 4 );
2566 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" ); /* 16-bit ss:sp */
2567
2568 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2569 fprintf( outfile, "\tmovl %%eax, 4(%%edi)\n" ); /* overwrite return address */
2570 }
2571 else
2572 {
2573 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 );
2574 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" );
2575
2576 fprintf( outfile, "\tmovl %%ds, %%ax\n" );
2577 fprintf( outfile, "\tmovw %%ax, 4(%%edi)\n" );
2578
2579 fprintf( outfile, "\taddl $20, %%ebx\n" );
2580 fprintf( outfile, "\tmovw %%bx, 10(%%edi)\n" );
2581
2582 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2583 fprintf( outfile, "\tmovl %%eax, 12(%%edi)\n" );
2584
2585 fprintf( outfile, "\tmovl %%ss, %%ax\n" );
2586 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2587 fprintf( outfile, "\tmovl %%eax, 16(%%edi)\n" );
2588
2589 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2590 fprintf( outfile, "\tmovl %%eax, 20(%%edi)\n" );
2591 }
2592
2593 /* Set up registers and call CBClient relay stub (simulating a far call) */
2594
2595 fprintf( outfile, "\tmovl 16(%%ebp), %%esi\n" );
2596 fprintf( outfile, "\tmovl (%%esi), %%esi\n" );
2597
2598 fprintf( outfile, "\tmovl %%edi, %%ebx\n" );
2599 fprintf( outfile, "\tmovl 8(%%ebp), %%eax\n" );
2600 fprintf( outfile, "\tmovl 12(%%ebp), %%ebp\n" );
2601
2602 fprintf( outfile, "\tpushl %%cs\n" );
2603 fprintf( outfile, "\tcall *%%eax\n" );
2604
2605 /* Return new esi value to caller */
2606
2607 fprintf( outfile, "\tmovl 32(%%esp), %%edi\n" );
2608 fprintf( outfile, "\tmovl %%esi, (%%edi)\n" );
2609
2610 /* Cleanup temporary area (simulate STACK16_POP) */
2611
2612 fprintf( outfile, "\tpop %%esi\n" );
2613
2614 fprintf( outfile, "\tpushf\n" );
2615 fprintf( outfile, "\tstd\n" );
2616 fprintf( outfile, "\tdec %%esi\n" );
2617 fprintf( outfile, "\tleal %d(%%esi), %%edi\n", size );
2618 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2619 fprintf( outfile, "\trep\n\tmovsb\n" );
2620 fprintf( outfile, "\tpopf\n" );
2621
2622 fprintf( outfile, "\t.byte 0x64\n\taddw $%d,(%d)\n", size, STACKOFFSET );
2623
2624 /* Return argument size to caller */
2625 if ( isEx )
2626 {
2627 fprintf( outfile, "\tmovl 32(%%esp), %%ebx\n" );
2628 fprintf( outfile, "\tmovl %%ebp, (%%ebx)\n" );
2629 }
2630
2631 /* Restore registers and return */
2632
2633 fprintf( outfile, "\tpopl %%ebx\n" );
2634 fprintf( outfile, "\tpopl %%esi\n" );
2635 fprintf( outfile, "\tpopl %%edi\n" );
2636 fprintf( outfile, "\tpopl %%ebp\n" );
2637 fprintf( outfile, "\tret\n" );
2638 }
2639
2640 static void BuildCallTo32CBClientRet( FILE *outfile, BOOL isEx )
2641 {
2642 char *name = isEx? "CBClientEx" : "CBClient";
2643
2644 /* '16-bit' return stub */
2645
2646 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_Ret\n", name );
2647 fprintf( outfile, PREFIX "CALL32_%s_Ret:\n", name );
2648
2649 if ( !isEx )
2650 {
2651 fprintf( outfile, "\tmovzwl %%sp, %%ebx\n" );
2652 fprintf( outfile, "\tlssl %%ss:-16(%%ebx), %%esp\n" );
2653 }
2654 else
2655 {
2656 fprintf( outfile, "\tmovzwl %%bp, %%ebx\n" );
2657 fprintf( outfile, "\tsubw %%bp, %%sp\n" );
2658 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
2659 fprintf( outfile, "\tlssl %%ss:-12(%%ebx), %%esp\n" );
2660 }
2661 fprintf( outfile, "\tlret\n" );
2662
2663 /* Declare the return address variable */
2664
2665 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_RetAddr\n", name );
2666 fprintf( outfile, PREFIX "CALL32_%s_RetAddr:\t.long 0\n", name );
2667 }
2668
2669
2670 /*******************************************************************
2671 * BuildCallTo32LargeStack
2672 *
2673 * Build the function used to switch to the original 32-bit stack
2674 * before calling a 32-bit function from 32-bit code. This is used for
2675 * functions that need a large stack, like X bitmaps functions.
2676 *
2677 * The generated function has the following prototype:
2678 * int xxx( int (*func)(), void *arg );
2679 *
2680 * The pointer to the function can be retrieved by calling CALL32_Init,
2681 * which also takes care of saving the current 32-bit stack pointer.
2682 * Furthermore, CALL32_Init switches to a new stack and jumps to the
2683 * specified target address.
2684 *
2685 * NOTE: The CALL32_LargeStack routine may be recursively entered by the
2686 * same thread, but not concurrently entered by several threads.
2687 *
2688 * Stack layout of CALL32_Init:
2689 *
2690 * (esp+12) new stack address
2691 * (esp+8) target address
2692 * (esp+4) pointer to variable to receive CALL32_LargeStack address
2693 * (esp) ret addr
2694 *
2695 * Stack layout of CALL32_LargeStack:
2696 * ... ...
2697 * (ebp+12) arg
2698 * (ebp+8) func
2699 * (ebp+4) ret addr
2700 * (ebp) ebp
2701 */
2702 static void BuildCallTo32LargeStack( FILE *outfile )
2703 {
2704 /* Initialization function */
2705
2706 fprintf( outfile, "\n\t.align 4\n" );
2707 #ifdef USE_STABS
2708 fprintf( outfile, ".stabs \"CALL32_Init:F1\",36,0,0," PREFIX "CALL32_Init\n");
2709 #endif
2710 fprintf( outfile, "\t.globl " PREFIX "CALL32_Init\n" );
2711 fprintf( outfile, "\t.type " PREFIX "CALL32_Init,@function\n" );
2712 fprintf( outfile, PREFIX "CALL32_Init:\n" );
2713 fprintf( outfile, "\tmovl %%esp,CALL32_Original32_esp\n" );
2714 fprintf( outfile, "\tpopl %%eax\n" );
2715 fprintf( outfile, "\tpopl %%eax\n" );
2716 fprintf( outfile, "\tmovl $CALL32_LargeStack,(%%eax)\n" );
2717 fprintf( outfile, "\tpopl %%eax\n" );
2718 fprintf( outfile, "\tpopl %%esp\n" );
2719 fprintf( outfile, "\tpushl %%eax\n" );
2720 fprintf( outfile, "\tret\n" );
2721
2722 /* Function header */
2723
2724 fprintf( outfile, "\n\t.align 4\n" );
2725 #ifdef USE_STABS
2726 fprintf( outfile, ".stabs \"CALL32_LargeStack:F1\",36,0,0,CALL32_LargeStack\n");
2727 #endif
2728 fprintf( outfile, "CALL32_LargeStack:\n" );
2729
2730 /* Entry code */
2731
2732 fprintf( outfile, "\tpushl %%ebp\n" );
2733 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2734
2735 /* Switch to the original 32-bit stack pointer */
2736
2737 fprintf( outfile, "\tcmpl $0, CALL32_RecursionCount\n" );
2738 fprintf( outfile, "\tjne CALL32_skip\n" );
2739 fprintf( outfile, "\tmovl CALL32_Original32_esp, %%esp\n" );
2740 fprintf( outfile, "CALL32_skip:\n" );
2741
2742 fprintf( outfile, "\tincl CALL32_RecursionCount\n" );
2743
2744 /* Transfer the argument and call the function */
2745
2746 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2747 fprintf( outfile, "\tcall *8(%%ebp)\n" );
2748
2749 /* Restore registers and return */
2750
2751 fprintf( outfile, "\tdecl CALL32_RecursionCount\n" );
2752
2753 fprintf( outfile, "\tmovl %%ebp,%%esp\n" );
2754 fprintf( outfile, "\tpopl %%ebp\n" );
2755 fprintf( outfile, "\tret\n" );
2756
2757 /* Data */
2758
2759 fprintf( outfile, "\t.data\n" );
2760 fprintf( outfile, "CALL32_Original32_esp:\t.long 0\n" );
2761 fprintf( outfile, "CALL32_RecursionCount:\t.long 0\n" );
2762 fprintf( outfile, "\t.text\n" );
2763 }
2764
2765
2766 /*******************************************************************
2767 * BuildCallFrom32Regs
2768 *
2769 * Build a 32-bit-to-Wine call-back function for a 'register' function.
2770 * 'args' is the number of dword arguments.
2771 *
2772 * Stack layout:
2773 * ...
2774 * (ebp+12) first arg
2775 * (ebp+8) ret addr to user code
2776 * (ebp+4) ret addr to relay code
2777 * (ebp+0) saved ebp
2778 * (ebp-128) buffer area to allow stack frame manipulation
2779 * (ebp-332) CONTEXT86 struct
2780 * (ebp-336) CONTEXT86 *argument
2781 * .... other arguments copied from (ebp+12)
2782 *
2783 * The entry point routine is called with a CONTEXT* extra argument,
2784 * following the normal args. In this context structure, EIP_reg
2785 * contains the return address to user code, and ESP_reg the stack
2786 * pointer on return (with the return address and arguments already
2787 * removed).
2788 */
2789 static void BuildCallFrom32Regs( FILE *outfile )
2790 {
2791 static const int STACK_SPACE = 128 + sizeof(CONTEXT86);
2792
2793 /* Function header */
2794
2795 fprintf( outfile, "\n\t.align 4\n" );
2796 #ifdef USE_STABS
2797 fprintf( outfile, ".stabs \"CALL32_Regs:F1\",36,0,0," PREFIX "CALL32_Regs\n" );
2798 #endif
2799 fprintf( outfile, "\t.globl " PREFIX "CALL32_Regs\n" );
2800 fprintf( outfile, PREFIX "CALL32_Regs:\n" );
2801
2802 /* Allocate some buffer space on the stack */
2803
2804 fprintf( outfile, "\tpushl %%ebp\n" );
2805 fprintf( outfile, "\tmovl %%esp,%%ebp\n ");
2806 fprintf( outfile, "\tleal -%d(%%esp), %%esp\n", STACK_SPACE );
2807
2808 /* Build the context structure */
2809
2810 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2811 fprintf( outfile, "\tpushfl\n" );
2812 fprintf( outfile, "\tpopl %%eax\n" );
2813 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2814 fprintf( outfile, "\tmovl 0(%%ebp),%%eax\n" );
2815 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2816 fprintf( outfile, "\tmovl %%ebx,%d(%%ebp)\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2817 fprintf( outfile, "\tmovl %%ecx,%d(%%ebp)\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2818 fprintf( outfile, "\tmovl %%edx,%d(%%ebp)\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2819 fprintf( outfile, "\tmovl %%esi,%d(%%ebp)\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2820 fprintf( outfile, "\tmovl %%edi,%d(%%ebp)\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2821
2822 fprintf( outfile, "\txorl %%eax,%%eax\n" );
2823 fprintf( outfile, "\tmovw %%cs,%%ax\n" );
2824 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegCs) - STACK_SPACE );
2825 fprintf( outfile, "\tmovw %%es,%%ax\n" );
2826 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2827 fprintf( outfile, "\tmovw %%fs,%%ax\n" );
2828 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2829 fprintf( outfile, "\tmovw %%gs,%%ax\n" );
2830 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2831 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2832 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegSs) - STACK_SPACE );
2833 fprintf( outfile, "\tmovw %%ds,%%ax\n" );
2834 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegDs) - STACK_SPACE );
2835 fprintf( outfile, "\tmovw %%ax,%%es\n" ); /* set %es equal to %ds just in case */
2836
2837 fprintf( outfile, "\tmovl $0x%x,%%eax\n", CONTEXT86_FULL );
2838 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(ContextFlags) - STACK_SPACE );
2839
2840 fprintf( outfile, "\tmovl 8(%%ebp),%%eax\n" ); /* Get %eip at time of call */
2841 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2842
2843 /* Transfer the arguments */
2844
2845 fprintf( outfile, "\tmovl 4(%%ebp),%%ebx\n" ); /* get relay code addr */
2846 fprintf( outfile, "\tpushl %%esp\n" ); /* push ptr to context struct */
2847 fprintf( outfile, "\tmovzbl 4(%%ebx),%%ecx\n" ); /* fetch number of args to copy */
2848 fprintf( outfile, "\tjecxz 1f\n" );
2849 fprintf( outfile, "\tsubl %%ecx,%%esp\n" );
2850 fprintf( outfile, "\tleal 12(%%ebp),%%esi\n" ); /* get %esp at time of call */
2851 fprintf( outfile, "\tmovl %%esp,%%edi\n" );
2852 fprintf( outfile, "\tshrl $2,%%ecx\n" );
2853 fprintf( outfile, "\tcld\n" );
2854 fprintf( outfile, "\trep\n\tmovsl\n" ); /* copy args */
2855
2856 fprintf( outfile, "1:\tmovzbl 5(%%ebx),%%eax\n" ); /* fetch number of args to remove */
2857 fprintf( outfile, "\tleal 12(%%ebp,%%eax),%%eax\n" );
2858 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2859
2860 /* Call the entry point */
2861
2862 fprintf( outfile, "\tcall *0(%%ebx)\n" );
2863
2864 /* Store %eip and %ebp onto the new stack */
2865
2866 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2867 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2868 fprintf( outfile, "\tmovl %%eax,-4(%%edx)\n" );
2869 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2870 fprintf( outfile, "\tmovl %%eax,-8(%%edx)\n" );
2871
2872 /* Restore the context structure */
2873
2874 /* Note: we don't bother to restore %cs, %ds and %ss
2875 * changing them in 32-bit code is a recipe for disaster anyway
2876 */
2877 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2878 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2879 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2880 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2881 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2882 fprintf( outfile, "\tmovw %%ax,%%gs\n" );
2883
2884 fprintf( outfile, "\tmovl %d(%%ebp),%%edi\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2885 fprintf( outfile, "\tmovl %d(%%ebp),%%esi\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2886 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2887 fprintf( outfile, "\tmovl %d(%%ebp),%%ecx\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2888 fprintf( outfile, "\tmovl %d(%%ebp),%%ebx\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2889
2890 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2891 fprintf( outfile, "\tpushl %%eax\n" );
2892 fprintf( outfile, "\tpopfl\n" );
2893 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2894
2895 fprintf( outfile, "\tmovl %d(%%ebp),%%ebp\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2896 fprintf( outfile, "\tleal -8(%%ebp),%%esp\n" );
2897 fprintf( outfile, "\tpopl %%ebp\n" );
2898 fprintf( outfile, "\tret\n" );
2899 }
2900
2901
2902 /*******************************************************************
2903 * BuildSpec
2904 *
2905 * Build the spec files
2906 */
2907 static int BuildSpec( FILE *outfile, int argc, char *argv[] )
2908 {
2909 int i;
2910 for (i = 2; i < argc; i++)
2911 if (BuildSpecFile( outfile, argv[i] ) < 0) return -1;
2912 return 0;
2913 }
2914
2915 /*******************************************************************
2916 * BuildGlue
2917 *
2918 * Build the 16-bit-to-Wine/Wine-to-16-bit callback glue code
2919 */
2920 static int BuildGlue( FILE *outfile, char * outname, int argc, char *argv[] )
2921 {
2922 char buffer[1024];
2923 FILE *infile;
2924
2925 if (argc > 2)
2926 {
2927 infile = fopen( argv[2], "r" );
2928 if (!infile)
2929 {
2930 perror( argv[2] );
2931 exit( 1 );
2932 }
2933 }
2934 else infile = stdin;
2935
2936 /* File header */
2937
2938 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
2939 argc > 2? argv[2] : "<stdin>" );
2940 fprintf( outfile, "#include \"builtin16.h\"\n" );
2941 fprintf( outfile, "#include \"stackframe.h\"\n\n" );
2942
2943 /* Build the callback glue functions */
2944
2945 while (fgets( buffer, sizeof(buffer), infile ))
2946 {
2947 if (strstr( buffer, "### start build ###" )) break;
2948 }
2949 while (fgets( buffer, sizeof(buffer), infile ))
2950 {
2951 char *p;
2952 if ( (p = strstr( buffer, "CallFrom16_" )) != NULL )
2953 {
2954 char *q, *profile = p + strlen( "CallFrom16_" );
2955 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2956 ;
2957 *q = '\0';
2958 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
2959 ;
2960 if ( ++q < p ) p[-1] = '\0'; else q = "";
2961 BuildCallFrom16Func( outfile, profile, q, FALSE );
2962 }
2963 if ( (p = strstr( buffer, "CallTo16_" )) != NULL )
2964 {
2965 char *q, *profile = p + strlen( "CallTo16_" );
2966 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2967 ;
2968 *q = '\0';
2969 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
2970 ;
2971 if ( ++q < p ) p[-1] = '\0'; else q = "";
2972 BuildCallTo16Func( outfile, profile, q );
2973 }
2974 if (strstr( buffer, "### stop build ###" )) break;
2975 }
2976
2977 fclose( infile );
2978 return 0;
2979 }
2980
2981 /*******************************************************************
2982 * BuildCall16
2983 *
2984 * Build the 16-bit callbacks
2985 */
2986 static int BuildCall16( FILE *outfile, char * outname )
2987 {
2988 #ifdef USE_STABS
2989 char buffer[1024];
2990 #endif
2991
2992 /* File header */
2993
2994 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
2995 fprintf( outfile, "\t.text\n" );
2996
2997 #ifdef __i386__
2998
2999 #ifdef USE_STABS
3000 fprintf( outfile, "\t.file\t\"%s\"\n", outname );
3001 getcwd(buffer, sizeof(buffer));
3002
3003 /*
3004 * The stabs help the internal debugger as they are an indication that it
3005 * is sensible to step into a thunk/trampoline.
3006 */
3007 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
3008 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname);
3009 fprintf( outfile, "\t.text\n" );
3010 fprintf( outfile, "\t.align 4\n" );
3011 fprintf( outfile, "Code_Start:\n\n" );
3012 #endif
3013 fprintf( outfile, PREFIX"Call16_Start:\n" );
3014 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
3015 fprintf( outfile, "\t.byte 0\n\n" );
3016
3017
3018 /* Standard CallFrom16 routine (WORD return) */
3019 BuildCallFrom16Core( outfile, FALSE, FALSE, TRUE );
3020
3021 /* Standard CallFrom16 routine (DWORD return) */
3022 BuildCallFrom16Core( outfile, FALSE, FALSE, FALSE );
3023
3024 /* Register CallFrom16 routine */
3025 BuildCallFrom16Core( outfile, TRUE, FALSE, FALSE );
3026
3027 /* C16ThkSL CallFrom16 routine */
3028 BuildCallFrom16Core( outfile, FALSE, TRUE, FALSE );
3029
3030 /* Standard CallTo16 routine (WORD return) */
3031 BuildCallTo16Core( outfile, TRUE, FALSE );
3032
3033 /* Standard CallTo16 routine (DWORD return) */
3034 BuildCallTo16Core( outfile, FALSE, FALSE );
3035
3036 /* Register CallTo16 routine (16:16 retf) */
3037 BuildCallTo16Core( outfile, FALSE, 1 );
3038
3039 /* Register CallTo16 routine (16:32 retf) */
3040 BuildCallTo16Core( outfile, FALSE, 2 );
3041
3042 /* CBClientThunkSL routine */
3043 BuildCallTo32CBClient( outfile, FALSE );
3044
3045 /* CBClientThunkSLEx routine */
3046 BuildCallTo32CBClient( outfile, TRUE );
3047
3048 fprintf( outfile, PREFIX"Call16_End:\n" );
3049 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
3050
3051 #ifdef USE_STABS
3052 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3053 fprintf( outfile, ".Letext:\n");
3054 #endif
3055
3056 /* The whole Call16_Ret segment must lie within the .data section */
3057 fprintf( outfile, "\n\t.data\n" );
3058 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
3059 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
3060
3061 /* Standard CallTo16 return stub */
3062 BuildRet16Func( outfile );
3063
3064 /* CBClientThunkSL return stub */
3065 BuildCallTo32CBClientRet( outfile, FALSE );
3066
3067 /* CBClientThunkSLEx return stub */
3068 BuildCallTo32CBClientRet( outfile, TRUE );
3069
3070 /* End of Call16_Ret segment */
3071 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3072 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3073
3074 #else /* __i386__ */
3075
3076 fprintf( outfile, PREFIX"Call16_Start:\n" );
3077 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
3078 fprintf( outfile, "\t.byte 0\n\n" );
3079 fprintf( outfile, PREFIX"Call16_End:\n" );
3080 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
3081
3082 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
3083 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
3084 fprintf( outfile, "\t.byte 0\n\n" );
3085 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3086 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3087
3088 #endif /* __i386__ */
3089
3090 return 0;
3091 }
3092
3093 /*******************************************************************
3094 * BuildCall32
3095 *
3096 * Build the 32-bit callbacks
3097 */
3098 static int BuildCall32( FILE *outfile, char * outname )
3099 {
3100 #ifdef USE_STABS
3101 char buffer[1024];
3102 #endif
3103
3104 /* File header */
3105
3106 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
3107 fprintf( outfile, "\t.text\n" );
3108
3109 #ifdef __i386__
3110
3111 #ifdef USE_STABS
3112 fprintf( outfile, "\t.file\t\"%s\"\n", outname );
3113 getcwd(buffer, sizeof(buffer));
3114
3115 /*
3116 * The stabs help the internal debugger as they are an indication that it
3117 * is sensible to step into a thunk/trampoline.
3118 */
3119 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
3120 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname);
3121 fprintf( outfile, "\t.text\n" );
3122 fprintf( outfile, "\t.align 4\n" );
3123 fprintf( outfile, "Code_Start:\n" );
3124 #endif
3125
3126 /* Build the 32-bit large stack callback */
3127
3128 BuildCallTo32LargeStack( outfile );
3129
3130 /* Build the register callback function */
3131
3132 BuildCallFrom32Regs( outfile );
3133
3134 #ifdef USE_STABS
3135 fprintf( outfile, "\t.text\n");
3136 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3137 fprintf( outfile, ".Letext:\n");
3138 #endif
3139
3140 #else /* __i386__ */
3141
3142 /* Just to avoid an empty file */
3143 fprintf( outfile, "\t.long 0\n" );
3144
3145 #endif /* __i386__ */
3146 return 0;
3147 }
3148
3149
3150 /*******************************************************************
3151 * usage
3152 */
3153 static void usage(void)
3154 {
3155 fprintf( stderr,
3156 "usage: build [-pic] [-o outfile] -spec SPECNAMES\n"
3157 " build [-pic] [-o outfile] -glue SOURCE_FILE\n"
3158 " build [-pic] [-o outfile] -call16\n"
3159 " build [-pic] [-o outfile] -call32\n" );
3160 exit(1);
3161 }
3162
3163
3164 /*******************************************************************
3165 * main
3166 */
3167 int main(int argc, char **argv)
3168 {
3169 char *outname = NULL;
3170 FILE *outfile = stdout;
3171 int res = -1;
3172
3173 if (argc < 2) usage();
3174
3175 if (!strcmp( argv[1], "-pic" ))
3176 {
3177 UsePIC = 1;
3178 argv += 1;
3179 argc -= 1;
3180 if (argc < 2) usage();
3181 }
3182
3183 if (!strcmp( argv[1], "-o" ))
3184 {
3185 outname = argv[2];
3186 argv += 2;
3187 argc -= 2;
3188 if (argc < 2) usage();
3189 if (!(outfile = fopen( outname, "w" )))
3190 {
3191 fprintf( stderr, "Unable to create output file '%s'\n", outname );
3192 exit(1);
3193 }
3194 }
3195
3196 /* Retrieve the selector values; this assumes that we are building
3197 * the asm files on the platform that will also run them. Probably
3198 * a safe assumption to make.
3199 */
3200 GET_CS( Code_Selector );
3201 GET_DS( Data_Selector );
3202
3203 if (!strcmp( argv[1], "-spec" ))
3204 res = BuildSpec( outfile, argc, argv );
3205 else if (!strcmp( argv[1], "-glue" ))
3206 res = BuildGlue( outfile, outname, argc, argv );
3207 else if (!strcmp( argv[1], "-call16" ))
3208 res = BuildCall16( outfile, outname );
3209 else if (!strcmp( argv[1], "-call32" ))
3210 res = BuildCall32( outfile, outname );
3211 else
3212 {
3213 fclose( outfile );
3214 unlink( outname );
3215 usage();
3216 }
3217
3218 fclose( outfile );
3219 if (res < 0)
3220 {
3221 unlink( outname );
3222 return 1;
3223 }
3224 return 0;
3225 }
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