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Rewrote PSDRV_SetDeviceClipping to use GetRegionData API.
[wine.git] / tools / build.c
blobe2af4aff537480fdc340c4ecbed07e43221ef5cf
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 <assert.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <ctype.h>
14 #include <unistd.h>
15
16 #include "winbase.h"
17 #include "winnt.h"
18 #include "module.h"
19 #include "neexe.h"
20 #include "selectors.h"
21 #include "stackframe.h"
22 #include "builtin16.h"
23 #include "thread.h"
24
25 #ifdef NEED_UNDERSCORE_PREFIX
26 # define PREFIX "_"
27 #else
28 # define PREFIX
29 #endif
30
31 #ifdef HAVE_ASM_STRING
32 # define STRING ".string"
33 #else
34 # define STRING ".ascii"
35 #endif
36
37 #if defined(__GNUC__) && !defined(__svr4__)
38 # define USE_STABS
39 #else
40 # undef USE_STABS
41 #endif
42
43 typedef enum
44 {
45 TYPE_INVALID,
46 TYPE_BYTE, /* byte variable (Win16) */
47 TYPE_WORD, /* word variable (Win16) */
48 TYPE_LONG, /* long variable (Win16) */
49 TYPE_PASCAL_16, /* pascal function with 16-bit return (Win16) */
50 TYPE_PASCAL, /* pascal function with 32-bit return (Win16) */
51 TYPE_ABS, /* absolute value (Win16) */
52 TYPE_REGISTER, /* register function */
53 TYPE_STUB, /* unimplemented stub */
54 TYPE_STDCALL, /* stdcall function (Win32) */
55 TYPE_CDECL, /* cdecl function (Win32) */
56 TYPE_VARARGS, /* varargs function (Win32) */
57 TYPE_EXTERN, /* external symbol (Win32) */
58 TYPE_FORWARD, /* forwarded function (Win32) */
59 TYPE_NBTYPES
60 } ORD_TYPE;
61
62 static const char * const TypeNames[TYPE_NBTYPES] =
63 {
64 NULL,
65 "byte", /* TYPE_BYTE */
66 "word", /* TYPE_WORD */
67 "long", /* TYPE_LONG */
68 "pascal16", /* TYPE_PASCAL_16 */
69 "pascal", /* TYPE_PASCAL */
70 "equate", /* TYPE_ABS */
71 "register", /* TYPE_REGISTER */
72 "stub", /* TYPE_STUB */
73 "stdcall", /* TYPE_STDCALL */
74 "cdecl", /* TYPE_CDECL */
75 "varargs", /* TYPE_VARARGS */
76 "extern", /* TYPE_EXTERN */
77 "forward" /* TYPE_FORWARD */
78 };
79
80 #define MAX_ORDINALS 2048
81 #define MAX_IMPORTS 16
82
83 /* Callback function used for stub functions */
84 #define STUB_CALLBACK \
85 ((SpecType == SPEC_WIN16) ? "RELAY_Unimplemented16": "RELAY_Unimplemented32")
86
87 typedef enum
88 {
89 SPEC_INVALID,
90 SPEC_WIN16,
91 SPEC_WIN32
92 } SPEC_TYPE;
93
94 typedef struct
95 {
96 int n_values;
97 int *values;
98 } ORD_VARIABLE;
99
100 typedef struct
101 {
102 int n_args;
103 char arg_types[32];
104 char link_name[80];
105 } ORD_FUNCTION;
106
107 typedef struct
108 {
109 int arg_size;
110 int ret_value;
111 } ORD_RETURN;
112
113 typedef struct
114 {
115 int value;
116 } ORD_ABS;
117
118 typedef struct
119 {
120 char link_name[80];
121 } ORD_VARARGS;
122
123 typedef struct
124 {
125 char link_name[80];
126 } ORD_EXTERN;
127
128 typedef struct
129 {
130 char link_name[80];
131 } ORD_FORWARD;
132
133 typedef struct
134 {
135 ORD_TYPE type;
136 int offset;
137 int lineno;
138 char name[80];
139 union
140 {
141 ORD_VARIABLE var;
142 ORD_FUNCTION func;
143 ORD_RETURN ret;
144 ORD_ABS abs;
145 ORD_VARARGS vargs;
146 ORD_EXTERN ext;
147 ORD_FORWARD fwd;
148 } u;
149 } ORDDEF;
150
151 static ORDDEF OrdinalDefinitions[MAX_ORDINALS];
152
153 static SPEC_TYPE SpecType = SPEC_INVALID;
154 static char DLLName[80];
155 static char DLLFileName[80];
156 static int Limit = 0;
157 static int Base = MAX_ORDINALS;
158 static int DLLHeapSize = 0;
159 static char *SpecName;
160 static FILE *SpecFp;
161 static WORD Code_Selector, Data_Selector;
162 static char DLLInitFunc[80];
163 static char *DLLImports[MAX_IMPORTS];
164 static int nb_imports = 0;
165
166 char *ParseBuffer = NULL;
167 char *ParseNext;
168 char ParseSaveChar;
169 int Line;
170
171 static int UsePIC = 0;
172
173 static int debugging = 1;
174
175 /* Offset of a structure field relative to the start of the struct */
176 #define STRUCTOFFSET(type,field) ((int)&((type *)0)->field)
177
178 /* Offset of register relative to the start of the CONTEXT struct */
179 #define CONTEXTOFFSET(reg) STRUCTOFFSET(CONTEXT86,reg)
180
181 /* Offset of register relative to the start of the STACK16FRAME struct */
182 #define STACK16OFFSET(reg) STRUCTOFFSET(STACK16FRAME,reg)
183
184 /* Offset of register relative to the start of the STACK32FRAME struct */
185 #define STACK32OFFSET(reg) STRUCTOFFSET(STACK32FRAME,reg)
186
187 /* Offset of the stack pointer relative to %fs:(0) */
188 #define STACKOFFSET (STRUCTOFFSET(TEB,cur_stack))
189
190
191 static void *xmalloc (size_t size)
192 {
193 void *res;
194
195 res = malloc (size ? size : 1);
196 if (res == NULL)
197 {
198 fprintf (stderr, "Virtual memory exhausted.\n");
199 exit (1);
200 }
201 return res;
202 }
203
204
205 static void *xrealloc (void *ptr, size_t size)
206 {
207 void *res = realloc (ptr, size);
208 if (res == NULL)
209 {
210 fprintf (stderr, "Virtual memory exhausted.\n");
211 exit (1);
212 }
213 return res;
214 }
215
216 static char *xstrdup( const char *str )
217 {
218 char *res = strdup( str );
219 if (!res)
220 {
221 fprintf (stderr, "Virtual memory exhausted.\n");
222 exit (1);
223 }
224 return res;
225 }
226
227 static int IsNumberString(char *s)
228 {
229 while (*s != '\0')
230 if (!isdigit(*s++))
231 return 0;
232
233 return 1;
234 }
235
236 static char *strupper(char *s)
237 {
238 char *p;
239
240 for(p = s; *p != '\0'; p++)
241 *p = toupper(*p);
242
243 return s;
244 }
245
246 static char * GetTokenInLine(void)
247 {
248 char *p;
249 char *token;
250
251 if (ParseNext != ParseBuffer)
252 {
253 if (ParseSaveChar == '\0')
254 return NULL;
255 *ParseNext = ParseSaveChar;
256 }
257
258 /*
259 * Remove initial white space.
260 */
261 for (p = ParseNext; isspace(*p); p++)
262 ;
263
264 if ((*p == '\0') || (*p == '#'))
265 return NULL;
266
267 /*
268 * Find end of token.
269 */
270 token = p++;
271 if (*token != '(' && *token != ')')
272 while (*p != '\0' && *p != '(' && *p != ')' && !isspace(*p))
273 p++;
274
275 ParseSaveChar = *p;
276 ParseNext = p;
277 *p = '\0';
278
279 return token;
280 }
281
282 static char * GetToken(void)
283 {
284 char *token;
285
286 if (ParseBuffer == NULL)
287 {
288 ParseBuffer = xmalloc(512);
289 ParseNext = ParseBuffer;
290 while (1)
291 {
292 Line++;
293 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
294 return NULL;
295 if (ParseBuffer[0] != '#')
296 break;
297 }
298 }
299
300 while ((token = GetTokenInLine()) == NULL)
301 {
302 ParseNext = ParseBuffer;
303 while (1)
304 {
305 Line++;
306 if (fgets(ParseBuffer, 511, SpecFp) == NULL)
307 return NULL;
308 if (ParseBuffer[0] != '#')
309 break;
310 }
311 }
312
313 return token;
314 }
315
316
317 /*******************************************************************
318 * ParseVariable
319 *
320 * Parse a variable definition.
321 */
322 static int ParseVariable( ORDDEF *odp )
323 {
324 char *endptr;
325 int *value_array;
326 int n_values;
327 int value_array_size;
328
329 char *token = GetToken();
330 if (*token != '(')
331 {
332 fprintf(stderr, "%s:%d: Expected '(' got '%s'\n",
333 SpecName, Line, token);
334 return -1;
335 }
336
337 n_values = 0;
338 value_array_size = 25;
339 value_array = xmalloc(sizeof(*value_array) * value_array_size);
340
341 while ((token = GetToken()) != NULL)
342 {
343 if (*token == ')')
344 break;
345
346 value_array[n_values++] = strtol(token, &endptr, 0);
347 if (n_values == value_array_size)
348 {
349 value_array_size += 25;
350 value_array = xrealloc(value_array,
351 sizeof(*value_array) * value_array_size);
352 }
353
354 if (endptr == NULL || *endptr != '\0')
355 {
356 fprintf(stderr, "%s:%d: Expected number value, got '%s'\n",
357 SpecName, Line, token);
358 return -1;
359 }
360 }
361
362 if (token == NULL)
363 {
364 fprintf(stderr, "%s:%d: End of file in variable declaration\n",
365 SpecName, Line);
366 return -1;
367 }
368
369 odp->u.var.n_values = n_values;
370 odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values);
371
372 return 0;
373 }
374
375
376 /*******************************************************************
377 * ParseExportFunction
378 *
379 * Parse a function definition.
380 */
381 static int ParseExportFunction( ORDDEF *odp )
382 {
383 char *token;
384 int i;
385
386 switch(SpecType)
387 {
388 case SPEC_WIN16:
389 if (odp->type == TYPE_STDCALL)
390 {
391 fprintf( stderr, "%s:%d: 'stdcall' not supported for Win16\n",
392 SpecName, Line );
393 return -1;
394 }
395 break;
396 case SPEC_WIN32:
397 if ((odp->type == TYPE_PASCAL) || (odp->type == TYPE_PASCAL_16))
398 {
399 fprintf( stderr, "%s:%d: 'pascal' not supported for Win32\n",
400 SpecName, Line );
401 return -1;
402 }
403 break;
404 default:
405 break;
406 }
407
408 token = GetToken();
409 if (*token != '(')
410 {
411 fprintf(stderr, "%s:%d: Expected '(' got '%s'\n",
412 SpecName, Line, token);
413 return -1;
414 }
415
416 for (i = 0; i < sizeof(odp->u.func.arg_types)-1; i++)
417 {
418 token = GetToken();
419 if (*token == ')')
420 break;
421
422 if (!strcmp(token, "word"))
423 odp->u.func.arg_types[i] = 'w';
424 else if (!strcmp(token, "s_word"))
425 odp->u.func.arg_types[i] = 's';
426 else if (!strcmp(token, "long") || !strcmp(token, "segptr"))
427 odp->u.func.arg_types[i] = 'l';
428 else if (!strcmp(token, "ptr"))
429 odp->u.func.arg_types[i] = 'p';
430 else if (!strcmp(token, "str"))
431 odp->u.func.arg_types[i] = 't';
432 else if (!strcmp(token, "wstr"))
433 odp->u.func.arg_types[i] = 'W';
434 else if (!strcmp(token, "segstr"))
435 odp->u.func.arg_types[i] = 'T';
436 else if (!strcmp(token, "double"))
437 {
438 odp->u.func.arg_types[i++] = 'l';
439 odp->u.func.arg_types[i] = 'l';
440 }
441 else
442 {
443 fprintf(stderr, "%s:%d: Unknown variable type '%s'\n",
444 SpecName, Line, token);
445 return -1;
446 }
447 if (SpecType == SPEC_WIN32)
448 {
449 if (strcmp(token, "long") &&
450 strcmp(token, "ptr") &&
451 strcmp(token, "str") &&
452 strcmp(token, "wstr") &&
453 strcmp(token, "double"))
454 {
455 fprintf( stderr, "%s:%d: Type '%s' not supported for Win32\n",
456 SpecName, Line, token );
457 return -1;
458 }
459 }
460 }
461 if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types)))
462 {
463 fprintf( stderr, "%s:%d: Too many arguments\n", SpecName, Line );
464 return -1;
465 }
466 odp->u.func.arg_types[i] = '\0';
467 if ((odp->type == TYPE_STDCALL) && !i)
468 odp->type = TYPE_CDECL; /* stdcall is the same as cdecl for 0 args */
469 strcpy(odp->u.func.link_name, GetToken());
470 return 0;
471 }
472
473
474 /*******************************************************************
475 * ParseEquate
476 *
477 * Parse an 'equate' definition.
478 */
479 static int ParseEquate( ORDDEF *odp )
480 {
481 char *endptr;
482
483 char *token = GetToken();
484 int value = strtol(token, &endptr, 0);
485 if (endptr == NULL || *endptr != '\0')
486 {
487 fprintf(stderr, "%s:%d: Expected number value, got '%s'\n",
488 SpecName, Line, token);
489 return -1;
490 }
491
492 if (SpecType == SPEC_WIN32)
493 {
494 fprintf( stderr, "%s:%d: 'equate' not supported for Win32\n",
495 SpecName, Line );
496 return -1;
497 }
498
499 odp->u.abs.value = value;
500 return 0;
501 }
502
503
504 /*******************************************************************
505 * ParseStub
506 *
507 * Parse a 'stub' definition.
508 */
509 static int ParseStub( ORDDEF *odp )
510 {
511 odp->u.func.arg_types[0] = '\0';
512 strcpy( odp->u.func.link_name, STUB_CALLBACK );
513 return 0;
514 }
515
516
517 /*******************************************************************
518 * ParseVarargs
519 *
520 * Parse an 'varargs' definition.
521 */
522 static int ParseVarargs( ORDDEF *odp )
523 {
524 char *token;
525
526 if (SpecType == SPEC_WIN16)
527 {
528 fprintf( stderr, "%s:%d: 'varargs' not supported for Win16\n",
529 SpecName, Line );
530 return -1;
531 }
532
533 token = GetToken();
534 if (*token != '(')
535 {
536 fprintf(stderr, "%s:%d: Expected '(' got '%s'\n",
537 SpecName, Line, token);
538 return -1;
539 }
540 token = GetToken();
541 if (*token != ')')
542 {
543 fprintf(stderr, "%s:%d: Expected ')' got '%s'\n",
544 SpecName, Line, token);
545 return -1;
546 }
547
548 strcpy( odp->u.vargs.link_name, GetToken() );
549 return 0;
550 }
551
552
553 /*******************************************************************
554 * ParseExtern
555 *
556 * Parse an 'extern' definition.
557 */
558 static int ParseExtern( ORDDEF *odp )
559 {
560 if (SpecType == SPEC_WIN16)
561 {
562 fprintf( stderr, "%s:%d: 'extern' not supported for Win16\n",
563 SpecName, Line );
564 return -1;
565 }
566 strcpy( odp->u.ext.link_name, GetToken() );
567 return 0;
568 }
569
570
571 /*******************************************************************
572 * ParseForward
573 *
574 * Parse a 'forward' definition.
575 */
576 static int ParseForward( ORDDEF *odp )
577 {
578 if (SpecType == SPEC_WIN16)
579 {
580 fprintf( stderr, "%s:%d: 'forward' not supported for Win16\n",
581 SpecName, Line );
582 return -1;
583 }
584 strcpy( odp->u.fwd.link_name, GetToken() );
585 return 0;
586 }
587
588
589 /*******************************************************************
590 * ParseOrdinal
591 *
592 * Parse an ordinal definition.
593 */
594 static int ParseOrdinal(int ordinal)
595 {
596 ORDDEF *odp;
597 char *token;
598
599 if (ordinal >= MAX_ORDINALS)
600 {
601 fprintf(stderr, "%s:%d: Ordinal number too large\n", SpecName, Line );
602 return -1;
603 }
604 if (ordinal > Limit) Limit = ordinal;
605 if (ordinal < Base) Base = ordinal;
606
607 odp = &OrdinalDefinitions[ordinal];
608 if (!(token = GetToken()))
609 {
610 fprintf(stderr, "%s:%d: Expected type after ordinal\n", SpecName, Line);
611 return -1;
612 }
613
614 for (odp->type = 0; odp->type < TYPE_NBTYPES; odp->type++)
615 if (TypeNames[odp->type] && !strcmp( token, TypeNames[odp->type] ))
616 break;
617
618 if (odp->type >= TYPE_NBTYPES)
619 {
620 fprintf( stderr,
621 "%s:%d: Expected type after ordinal, found '%s' instead\n",
622 SpecName, Line, token );
623 return -1;
624 }
625
626 if (!(token = GetToken()))
627 {
628 fprintf( stderr, "%s:%d: Expected name after type\n", SpecName, Line );
629 return -1;
630 }
631 strcpy( odp->name, token );
632 odp->lineno = Line;
633
634 switch(odp->type)
635 {
636 case TYPE_BYTE:
637 case TYPE_WORD:
638 case TYPE_LONG:
639 return ParseVariable( odp );
640 case TYPE_PASCAL_16:
641 case TYPE_PASCAL:
642 case TYPE_REGISTER:
643 case TYPE_STDCALL:
644 case TYPE_CDECL:
645 return ParseExportFunction( odp );
646 case TYPE_ABS:
647 return ParseEquate( odp );
648 case TYPE_STUB:
649 return ParseStub( odp );
650 case TYPE_VARARGS:
651 return ParseVarargs( odp );
652 case TYPE_EXTERN:
653 return ParseExtern( odp );
654 case TYPE_FORWARD:
655 return ParseForward( odp );
656 default:
657 fprintf( stderr, "Should not happen\n" );
658 return -1;
659 }
660 }
661
662
663 /*******************************************************************
664 * ParseTopLevel
665 *
666 * Parse a spec file.
667 */
668 static int ParseTopLevel(void)
669 {
670 char *token;
671
672 while ((token = GetToken()) != NULL)
673 {
674 if (strcmp(token, "name") == 0)
675 {
676 strcpy(DLLName, GetToken());
677 strupper(DLLName);
678 if (!DLLFileName[0]) sprintf( DLLFileName, "%s.DLL", DLLName );
679 }
680 else if (strcmp(token, "file") == 0)
681 {
682 strcpy(DLLFileName, GetToken());
683 strupper(DLLFileName);
684 }
685 else if (strcmp(token, "type") == 0)
686 {
687 token = GetToken();
688 if (!strcmp(token, "win16" )) SpecType = SPEC_WIN16;
689 else if (!strcmp(token, "win32" )) SpecType = SPEC_WIN32;
690 else
691 {
692 fprintf(stderr, "%s:%d: Type must be 'win16' or 'win32'\n",
693 SpecName, Line);
694 return -1;
695 }
696 }
697 else if (strcmp(token, "heap") == 0)
698 {
699 token = GetToken();
700 if (!IsNumberString(token))
701 {
702 fprintf(stderr, "%s:%d: Expected number after heap\n",
703 SpecName, Line);
704 return -1;
705 }
706 DLLHeapSize = atoi(token);
707 }
708 else if (strcmp(token, "init") == 0)
709 {
710 strcpy(DLLInitFunc, GetToken());
711 if (!DLLInitFunc[0])
712 fprintf(stderr, "%s:%d: Expected function name after init\n", SpecName, Line);
713 }
714 else if (strcmp(token, "import") == 0)
715 {
716 if (nb_imports >= MAX_IMPORTS)
717 {
718 fprintf( stderr, "%s:%d: Too many imports (limit %d)\n",
719 SpecName, Line, MAX_IMPORTS );
720 return -1;
721 }
722 if (SpecType != SPEC_WIN32)
723 {
724 fprintf( stderr, "%s:%d: Imports not supported for Win16\n", SpecName, Line );
725 return -1;
726 }
727 DLLImports[nb_imports++] = xstrdup(GetToken());
728 }
729 else if (IsNumberString(token))
730 {
731 int ordinal;
732 int rv;
733
734 ordinal = atoi(token);
735 if ((rv = ParseOrdinal(ordinal)) < 0)
736 return rv;
737 }
738 else
739 {
740 fprintf(stderr,
741 "%s:%d: Expected name, id, length or ordinal\n",
742 SpecName, Line);
743 return -1;
744 }
745 }
746
747 return 0;
748 }
749
750
751 /*******************************************************************
752 * StoreVariableCode
753 *
754 * Store a list of ints into a byte array.
755 */
756 static int StoreVariableCode( unsigned char *buffer, int size, ORDDEF *odp )
757 {
758 int i;
759
760 switch(size)
761 {
762 case 1:
763 for (i = 0; i < odp->u.var.n_values; i++)
764 buffer[i] = odp->u.var.values[i];
765 break;
766 case 2:
767 for (i = 0; i < odp->u.var.n_values; i++)
768 ((unsigned short *)buffer)[i] = odp->u.var.values[i];
769 break;
770 case 4:
771 for (i = 0; i < odp->u.var.n_values; i++)
772 ((unsigned int *)buffer)[i] = odp->u.var.values[i];
773 break;
774 }
775 return odp->u.var.n_values * size;
776 }
777
778
779 /*******************************************************************
780 * DumpBytes
781 *
782 * Dump a byte stream into the assembly code.
783 */
784 static void DumpBytes( FILE *outfile, const unsigned char *data, int len,
785 const char *label )
786 {
787 int i;
788
789 fprintf( outfile, "\nstatic BYTE %s[] = \n{", label );
790
791 for (i = 0; i < len; i++)
792 {
793 if (!(i & 0x0f)) fprintf( outfile, "\n " );
794 fprintf( outfile, "%d", *data++ );
795 if (i < len - 1) fprintf( outfile, ", " );
796 }
797 fprintf( outfile, "\n};\n" );
798 }
799
800
801 /*******************************************************************
802 * BuildModule16
803 *
804 * Build the in-memory representation of a 16-bit NE module, and dump it
805 * as a byte stream into the assembly code.
806 */
807 static int BuildModule16( FILE *outfile, int max_code_offset,
808 int max_data_offset )
809 {
810 ORDDEF *odp;
811 int i;
812 char *buffer;
813 NE_MODULE *pModule;
814 SEGTABLEENTRY *pSegment;
815 OFSTRUCT *pFileInfo;
816 BYTE *pstr;
817 WORD *pword;
818 ET_BUNDLE *bundle = 0;
819 ET_ENTRY *entry = 0;
820
821 /* Module layout:
822 * NE_MODULE Module
823 * OFSTRUCT File information
824 * SEGTABLEENTRY Segment 1 (code)
825 * SEGTABLEENTRY Segment 2 (data)
826 * WORD[2] Resource table (empty)
827 * BYTE[2] Imported names (empty)
828 * BYTE[n] Resident names table
829 * BYTE[n] Entry table
830 */
831
832 buffer = xmalloc( 0x10000 );
833
834 pModule = (NE_MODULE *)buffer;
835 memset( pModule, 0, sizeof(*pModule) );
836 pModule->magic = IMAGE_OS2_SIGNATURE;
837 pModule->count = 1;
838 pModule->next = 0;
839 pModule->flags = NE_FFLAGS_SINGLEDATA | NE_FFLAGS_BUILTIN | NE_FFLAGS_LIBMODULE;
840 pModule->dgroup = 2;
841 pModule->heap_size = DLLHeapSize;
842 pModule->stack_size = 0;
843 pModule->ip = 0;
844 pModule->cs = 0;
845 pModule->sp = 0;
846 pModule->ss = 0;
847 pModule->seg_count = 2;
848 pModule->modref_count = 0;
849 pModule->nrname_size = 0;
850 pModule->modref_table = 0;
851 pModule->nrname_fpos = 0;
852 pModule->moveable_entries = 0;
853 pModule->alignment = 0;
854 pModule->truetype = 0;
855 pModule->os_flags = NE_OSFLAGS_WINDOWS;
856 pModule->misc_flags = 0;
857 pModule->dlls_to_init = 0;
858 pModule->nrname_handle = 0;
859 pModule->min_swap_area = 0;
860 pModule->expected_version = 0x030a;
861 pModule->module32 = 0;
862 pModule->self = 0;
863 pModule->self_loading_sel = 0;
864
865 /* File information */
866
867 pFileInfo = (OFSTRUCT *)(pModule + 1);
868 pModule->fileinfo = (int)pFileInfo - (int)pModule;
869 memset( pFileInfo, 0, sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) );
870 pFileInfo->cBytes = sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName)
871 + strlen(DLLFileName);
872 strcpy( pFileInfo->szPathName, DLLFileName );
873 pstr = (char *)pFileInfo + pFileInfo->cBytes + 1;
874
875 #ifdef __i386__ /* FIXME: Alignment problems! */
876
877 /* Segment table */
878
879 pSegment = (SEGTABLEENTRY *)pstr;
880 pModule->seg_table = (int)pSegment - (int)pModule;
881 pSegment->filepos = 0;
882 pSegment->size = max_code_offset;
883 pSegment->flags = 0;
884 pSegment->minsize = max_code_offset;
885 pSegment->hSeg = 0;
886 pSegment++;
887
888 pModule->dgroup_entry = (int)pSegment - (int)pModule;
889 pSegment->filepos = 0;
890 pSegment->size = max_data_offset;
891 pSegment->flags = NE_SEGFLAGS_DATA;
892 pSegment->minsize = max_data_offset;
893 pSegment->hSeg = 0;
894 pSegment++;
895
896 /* Resource table */
897
898 pword = (WORD *)pSegment;
899 pModule->res_table = (int)pword - (int)pModule;
900 *pword++ = 0;
901 *pword++ = 0;
902
903 /* Imported names table */
904
905 pstr = (char *)pword;
906 pModule->import_table = (int)pstr - (int)pModule;
907 *pstr++ = 0;
908 *pstr++ = 0;
909
910 /* Resident names table */
911
912 pModule->name_table = (int)pstr - (int)pModule;
913 /* First entry is module name */
914 *pstr = strlen(DLLName );
915 strcpy( pstr + 1, DLLName );
916 pstr += *pstr + 1;
917 *(WORD *)pstr = 0;
918 pstr += sizeof(WORD);
919 /* Store all ordinals */
920 odp = OrdinalDefinitions + 1;
921 for (i = 1; i <= Limit; i++, odp++)
922 {
923 if (!odp->name[0]) continue;
924 *pstr = strlen( odp->name );
925 strcpy( pstr + 1, odp->name );
926 strupper( pstr + 1 );
927 pstr += *pstr + 1;
928 *(WORD *)pstr = i;
929 pstr += sizeof(WORD);
930 }
931 *pstr++ = 0;
932
933 /* Entry table */
934
935 pModule->entry_table = (int)pstr - (int)pModule;
936 odp = OrdinalDefinitions + 1;
937 for (i = 1; i <= Limit; i++, odp++)
938 {
939 int selector = 0;
940
941 switch (odp->type)
942 {
943 case TYPE_CDECL:
944 case TYPE_PASCAL:
945 case TYPE_PASCAL_16:
946 case TYPE_REGISTER:
947 case TYPE_STUB:
948 selector = 1; /* Code selector */
949 break;
950
951 case TYPE_BYTE:
952 case TYPE_WORD:
953 case TYPE_LONG:
954 selector = 2; /* Data selector */
955 break;
956
957 case TYPE_ABS:
958 selector = 0xfe; /* Constant selector */
959 break;
960
961 default:
962 selector = 0; /* Invalid selector */
963 break;
964 }
965
966 if ( !selector )
967 continue;
968
969 if ( bundle && bundle->last+1 == i )
970 bundle->last++;
971 else
972 {
973 if ( bundle )
974 bundle->next = (char *)pstr - (char *)pModule;
975
976 bundle = (ET_BUNDLE *)pstr;
977 bundle->first = i-1;
978 bundle->last = i;
979 bundle->next = 0;
980 pstr += sizeof(ET_BUNDLE);
981 }
982
983 /* FIXME: is this really correct ?? */
984 entry = (ET_ENTRY *)pstr;
985 entry->type = 0xff; /* movable */
986 entry->flags = 3; /* exported & public data */
987 entry->segnum = selector;
988 entry->offs = odp->offset;
989 pstr += sizeof(ET_ENTRY);
990 }
991 *pstr++ = 0;
992 #endif
993
994 /* Dump the module content */
995
996 DumpBytes( outfile, (char *)pModule, (int)pstr - (int)pModule,
997 "Module" );
998 return (int)pstr - (int)pModule;
999 }
1000
1001
1002 /*******************************************************************
1003 * BuildSpec32File
1004 *
1005 * Build a Win32 C file from a spec file.
1006 */
1007 static int BuildSpec32File( char * specfile, FILE *outfile )
1008 {
1009 ORDDEF *odp;
1010 int i, nb_names, fwd_size = 0;
1011
1012 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1013 specfile );
1014 fprintf( outfile, "#include \"builtin32.h\"\n\n" );
1015
1016 /* Output code for all stubs functions */
1017
1018 fprintf( outfile, "extern const BUILTIN32_DESCRIPTOR %s_Descriptor;\n",
1019 DLLName );
1020 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1021 {
1022 if (odp->type != TYPE_STUB) continue;
1023 fprintf( outfile, "static void __stub_%d() { BUILTIN32_Unimplemented(&%s_Descriptor,%d); }\n",
1024 i, DLLName, i );
1025 }
1026
1027 /* Output code for all register functions */
1028
1029 fprintf( outfile, "#ifdef __i386__\n" );
1030 fprintf( outfile, "#ifndef __GNUC__\n" );
1031 fprintf( outfile, "static void __asm__dummy() {\n" );
1032 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1033 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1034 {
1035 if (odp->type != TYPE_REGISTER) continue;
1036 fprintf( outfile,
1037 "__asm__(\".align 4\\n\\t\"\n"
1038 " \".globl " PREFIX "%s\\n\\t\"\n"
1039 " \".type " PREFIX "%s,@function\\n\\t\"\n"
1040 " \"" PREFIX "%s:\\n\\t\"\n"
1041 " \"call " PREFIX "CALL32_Regs\\n\\t\"\n"
1042 " \".long " PREFIX "__regs_%s\\n\\t\"\n"
1043 " \".byte %d,%d\");\n",
1044 odp->u.func.link_name, odp->u.func.link_name,
1045 odp->u.func.link_name, odp->u.func.link_name,
1046 4 * strlen(odp->u.func.arg_types),
1047 4 * strlen(odp->u.func.arg_types) );
1048 }
1049 fprintf( outfile, "#ifndef __GNUC__\n" );
1050 fprintf( outfile, "}\n" );
1051 fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" );
1052 fprintf( outfile, "#endif /* defined(__i386__) */\n" );
1053
1054 /* Output the DLL functions prototypes */
1055
1056 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1057 {
1058 switch(odp->type)
1059 {
1060 case TYPE_VARARGS:
1061 fprintf( outfile, "extern void %s();\n", odp->u.vargs.link_name );
1062 break;
1063 case TYPE_EXTERN:
1064 fprintf( outfile, "extern void %s();\n", odp->u.ext.link_name );
1065 break;
1066 case TYPE_REGISTER:
1067 case TYPE_STDCALL:
1068 case TYPE_CDECL:
1069 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1070 break;
1071 case TYPE_FORWARD:
1072 fwd_size += strlen(odp->u.fwd.link_name) + 1;
1073 break;
1074 case TYPE_INVALID:
1075 case TYPE_STUB:
1076 break;
1077 default:
1078 fprintf(stderr,"build: function type %d not available for Win32\n",
1079 odp->type);
1080 return -1;
1081 }
1082 }
1083
1084 /* Output LibMain function */
1085 if (DLLInitFunc[0]) fprintf( outfile, "extern void %s();\n", DLLInitFunc );
1086
1087
1088 /* Output the DLL functions table */
1089
1090 fprintf( outfile, "\nstatic const ENTRYPOINT32 Functions[%d] =\n{\n",
1091 Limit - Base + 1 );
1092 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1093 {
1094 switch(odp->type)
1095 {
1096 case TYPE_INVALID:
1097 fprintf( outfile, " 0" );
1098 break;
1099 case TYPE_VARARGS:
1100 fprintf( outfile, " %s", odp->u.vargs.link_name );
1101 break;
1102 case TYPE_EXTERN:
1103 fprintf( outfile, " %s", odp->u.ext.link_name );
1104 break;
1105 case TYPE_REGISTER:
1106 case TYPE_STDCALL:
1107 case TYPE_CDECL:
1108 fprintf( outfile, " %s", odp->u.func.link_name);
1109 break;
1110 case TYPE_STUB:
1111 fprintf( outfile, " __stub_%d", i );
1112 break;
1113 case TYPE_FORWARD:
1114 fprintf( outfile, " (ENTRYPOINT32)\"%s\"", odp->u.fwd.link_name );
1115 break;
1116 default:
1117 return -1;
1118 }
1119 if (i < Limit) fprintf( outfile, ",\n" );
1120 }
1121 fprintf( outfile, "\n};\n\n" );
1122
1123 /* Output the DLL names table */
1124
1125 nb_names = 0;
1126 fprintf( outfile, "static const char * const FuncNames[] =\n{\n" );
1127 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1128 {
1129 if (odp->type == TYPE_INVALID) continue;
1130 if (nb_names++) fprintf( outfile, ",\n" );
1131 fprintf( outfile, " \"%s\"", odp->name );
1132 }
1133 fprintf( outfile, "\n};\n\n" );
1134
1135 /* Output the DLL argument types */
1136
1137 fprintf( outfile, "static const unsigned int ArgTypes[%d] =\n{\n",
1138 Limit - Base + 1 );
1139 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1140 {
1141 unsigned int j, mask = 0;
1142 if ((odp->type == TYPE_STDCALL) || (odp->type == TYPE_CDECL) ||
1143 (odp->type == TYPE_REGISTER))
1144 for (j = 0; odp->u.func.arg_types[j]; j++)
1145 {
1146 if (odp->u.func.arg_types[j] == 't') mask |= 1<< (j*2);
1147 if (odp->u.func.arg_types[j] == 'W') mask |= 2<< (j*2);
1148 }
1149 fprintf( outfile, " %d", mask );
1150 if (i < Limit) fprintf( outfile, ",\n" );
1151 }
1152 fprintf( outfile, "\n};\n\n" );
1153
1154 /* Output the DLL ordinals table */
1155
1156 fprintf( outfile, "static const unsigned short FuncOrdinals[] =\n{\n" );
1157 nb_names = 0;
1158 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1159 {
1160 if (odp->type == TYPE_INVALID) continue;
1161 if (nb_names++) fprintf( outfile, ",\n" );
1162 fprintf( outfile, " %d", i - Base );
1163 }
1164 fprintf( outfile, "\n};\n\n" );
1165
1166 /* Output the DLL functions arguments */
1167
1168 fprintf( outfile, "static const unsigned char FuncArgs[%d] =\n{\n",
1169 Limit - Base + 1 );
1170 for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++)
1171 {
1172 unsigned char args;
1173 switch(odp->type)
1174 {
1175 case TYPE_STDCALL:
1176 args = (unsigned char)strlen(odp->u.func.arg_types);
1177 break;
1178 case TYPE_CDECL:
1179 args = 0x80 | (unsigned char)strlen(odp->u.func.arg_types);
1180 break;
1181 case TYPE_REGISTER:
1182 args = 0x40 | (unsigned char)strlen(odp->u.func.arg_types);
1183 break;
1184 case TYPE_FORWARD:
1185 args = 0xfd;
1186 break;
1187 default:
1188 args = 0xff;
1189 break;
1190 }
1191 fprintf( outfile, " 0x%02x", args );
1192 if (i < Limit) fprintf( outfile, ",\n" );
1193 }
1194 fprintf( outfile, "\n};\n\n" );
1195
1196 /* Output the DLL imports */
1197
1198 if (nb_imports)
1199 {
1200 fprintf( outfile, "static const char * const Imports[%d] =\n{\n", nb_imports );
1201 for (i = 0; i < nb_imports; i++)
1202 {
1203 fprintf( outfile, " \"%s\"", DLLImports[i] );
1204 if (i < nb_imports-1) fprintf( outfile, ",\n" );
1205 }
1206 fprintf( outfile, "\n};\n\n" );
1207 }
1208
1209 /* Output the DLL descriptor */
1210
1211 fprintf( outfile, "const BUILTIN32_DESCRIPTOR %s_Descriptor =\n{\n",
1212 DLLName );
1213 fprintf( outfile, " \"%s\",\n", DLLName );
1214 fprintf( outfile, " %d,\n", Base );
1215 fprintf( outfile, " %d,\n", Limit - Base + 1 );
1216 fprintf( outfile, " %d,\n", nb_names );
1217 fprintf( outfile, " %d,\n", nb_imports );
1218 fprintf( outfile, " %d,\n", (fwd_size + 3) & ~3 );
1219 fprintf( outfile,
1220 " Functions,\n"
1221 " FuncNames,\n"
1222 " FuncOrdinals,\n"
1223 " FuncArgs,\n"
1224 " ArgTypes,\n");
1225 fprintf( outfile, " %s,\n", nb_imports ? "Imports" : "0" );
1226 fprintf( outfile, " %s\n", DLLInitFunc[0] ? DLLInitFunc : "0" );
1227 fprintf( outfile, "};\n" );
1228 return 0;
1229 }
1230
1231 /*******************************************************************
1232 * Spec16TypeCompare
1233 */
1234 static int Spec16TypeCompare( const void *e1, const void *e2 )
1235 {
1236 const ORDDEF *odp1 = *(const ORDDEF **)e1;
1237 const ORDDEF *odp2 = *(const ORDDEF **)e2;
1238
1239 int type1 = (odp1->type == TYPE_CDECL) ? 0
1240 : (odp1->type == TYPE_REGISTER) ? 3
1241 : (odp1->type == TYPE_PASCAL_16) ? 1 : 2;
1242
1243 int type2 = (odp2->type == TYPE_CDECL) ? 0
1244 : (odp2->type == TYPE_REGISTER) ? 3
1245 : (odp2->type == TYPE_PASCAL_16) ? 1 : 2;
1246
1247 int retval = type1 - type2;
1248 if ( !retval )
1249 retval = strcmp( odp1->u.func.arg_types, odp2->u.func.arg_types );
1250
1251 return retval;
1252 }
1253
1254 /*******************************************************************
1255 * BuildSpec16File
1256 *
1257 * Build a Win16 assembly file from a spec file.
1258 */
1259 static int BuildSpec16File( char * specfile, FILE *outfile )
1260 {
1261 ORDDEF *odp, **typelist;
1262 int i, j, k;
1263 int code_offset, data_offset, module_size;
1264 unsigned char *data;
1265
1266 /* File header */
1267
1268 fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n",
1269 specfile );
1270 fprintf( outfile, "#define __FLATCS__ 0x%04x\n", Code_Selector );
1271 fprintf( outfile, "#include \"builtin16.h\"\n\n" );
1272
1273 data = (unsigned char *)xmalloc( 0x10000 );
1274 memset( data, 0, 16 );
1275 data_offset = 16;
1276
1277
1278 /* Build sorted list of all argument types, without duplicates */
1279
1280 typelist = (ORDDEF **)calloc( Limit+1, sizeof(ORDDEF *) );
1281
1282 odp = OrdinalDefinitions;
1283 for (i = j = 0; i <= Limit; i++, odp++)
1284 {
1285 switch (odp->type)
1286 {
1287 case TYPE_REGISTER:
1288 case TYPE_CDECL:
1289 case TYPE_PASCAL:
1290 case TYPE_PASCAL_16:
1291 case TYPE_STUB:
1292 typelist[j++] = odp;
1293
1294 default:
1295 break;
1296 }
1297 }
1298
1299 qsort( typelist, j, sizeof(ORDDEF *), Spec16TypeCompare );
1300
1301 i = k = 0;
1302 while ( i < j )
1303 {
1304 typelist[k++] = typelist[i++];
1305 while ( i < j && Spec16TypeCompare( typelist + i, typelist + k-1 ) == 0 )
1306 i++;
1307 }
1308
1309 /* Output CallFrom16 profiles needed by this .spec file */
1310
1311 fprintf( outfile, "\n/* ### start build ### */\n" );
1312
1313 for ( i = 0; i < k; i++ )
1314 fprintf( outfile, "extern void %s_CallFrom16_%s_%s_%s();\n",
1315 DLLName,
1316 (typelist[i]->type == TYPE_CDECL) ? "c" : "p",
1317 (typelist[i]->type == TYPE_REGISTER) ? "regs" :
1318 (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long",
1319 typelist[i]->u.func.arg_types );
1320
1321 fprintf( outfile, "/* ### stop build ### */\n\n" );
1322
1323 /* Output the DLL functions prototypes */
1324
1325 odp = OrdinalDefinitions;
1326 for (i = 0; i <= Limit; i++, odp++)
1327 {
1328 switch(odp->type)
1329 {
1330 case TYPE_REGISTER:
1331 case TYPE_CDECL:
1332 case TYPE_PASCAL:
1333 case TYPE_PASCAL_16:
1334 fprintf( outfile, "extern void %s();\n", odp->u.func.link_name );
1335 break;
1336 default:
1337 break;
1338 }
1339 }
1340
1341 /* Output code segment */
1342
1343 fprintf( outfile, "\nstatic ENTRYPOINT16 Code_Segment[] = \n{\n" );
1344 code_offset = 0;
1345
1346 odp = OrdinalDefinitions;
1347 for (i = 0; i <= Limit; i++, odp++)
1348 {
1349 switch (odp->type)
1350 {
1351 case TYPE_INVALID:
1352 odp->offset = 0xffff;
1353 break;
1354
1355 case TYPE_ABS:
1356 odp->offset = LOWORD(odp->u.abs.value);
1357 break;
1358
1359 case TYPE_BYTE:
1360 odp->offset = data_offset;
1361 data_offset += StoreVariableCode( data + data_offset, 1, odp);
1362 break;
1363
1364 case TYPE_WORD:
1365 odp->offset = data_offset;
1366 data_offset += StoreVariableCode( data + data_offset, 2, odp);
1367 break;
1368
1369 case TYPE_LONG:
1370 odp->offset = data_offset;
1371 data_offset += StoreVariableCode( data + data_offset, 4, odp);
1372 break;
1373
1374 case TYPE_REGISTER:
1375 case TYPE_CDECL:
1376 case TYPE_PASCAL:
1377 case TYPE_PASCAL_16:
1378 case TYPE_STUB:
1379 fprintf( outfile, " /* %s.%d */ ", DLLName, i );
1380 fprintf( outfile, "EP( %s, %s_CallFrom16_%s_%s_%s ),\n",
1381 odp->u.func.link_name,
1382 DLLName,
1383 (odp->type == TYPE_CDECL) ? "c" : "p",
1384 (odp->type == TYPE_REGISTER) ? "regs" :
1385 (odp->type == TYPE_PASCAL_16) ? "word" : "long",
1386 odp->u.func.arg_types );
1387
1388 odp->offset = code_offset;
1389 code_offset += sizeof(ENTRYPOINT16);
1390 break;
1391
1392 default:
1393 fprintf(stderr,"build: function type %d not available for Win16\n",
1394 odp->type);
1395 return -1;
1396 }
1397 }
1398
1399 if (!code_offset) /* Make sure the code segment is not empty */
1400 {
1401 fprintf( outfile, " { },\n" );
1402 code_offset += sizeof(ENTRYPOINT16);
1403 }
1404
1405 fprintf( outfile, "};\n" );
1406
1407 /* Output data segment */
1408
1409 DumpBytes( outfile, data, data_offset, "Data_Segment" );
1410
1411 /* Build the module */
1412
1413 module_size = BuildModule16( outfile, code_offset, data_offset );
1414
1415 /* Output the DLL descriptor */
1416
1417 fprintf( outfile, "\nWIN16_DESCRIPTOR %s_Descriptor = \n{\n", DLLName );
1418 fprintf( outfile, " \"%s\",\n", DLLName );
1419 fprintf( outfile, " Module,\n" );
1420 fprintf( outfile, " sizeof(Module),\n" );
1421 fprintf( outfile, " (BYTE *)Code_Segment,\n" );
1422 fprintf( outfile, " (BYTE *)Data_Segment\n" );
1423 fprintf( outfile, "};\n" );
1424
1425 return 0;
1426 }
1427
1428
1429 /*******************************************************************
1430 * BuildSpecFile
1431 *
1432 * Build an assembly file from a spec file.
1433 */
1434 static int BuildSpecFile( FILE *outfile, char *specname )
1435 {
1436 SpecName = specname;
1437 SpecFp = fopen( specname, "r");
1438 if (SpecFp == NULL)
1439 {
1440 fprintf(stderr, "Could not open specification file, '%s'\n", specname);
1441 return -1;
1442 }
1443
1444 if (ParseTopLevel() < 0) return -1;
1445
1446 switch(SpecType)
1447 {
1448 case SPEC_WIN16:
1449 return BuildSpec16File( specname, outfile );
1450 case SPEC_WIN32:
1451 return BuildSpec32File( specname, outfile );
1452 default:
1453 fprintf( stderr, "%s: Missing 'type' declaration\n", specname );
1454 return -1;
1455 }
1456 }
1457
1458
1459 /*******************************************************************
1460 * BuildCallFrom16Func
1461 *
1462 * Build a 16-bit-to-Wine callback glue function. The syntax of the function
1463 * profile is: call_type_xxxxx, where 'call' is the letter 'c' or 'p' for C or
1464 * Pascal calling convention, 'type' is one of 'regs', 'word' or
1465 * 'long' and each 'x' is an argument ('w'=word, 's'=signed word,
1466 * 'l'=long, 'p'=linear pointer, 't'=linear pointer to null-terminated string,
1467 * 'T'=segmented pointer to null-terminated string).
1468 * For register functions, the arguments are ignored, but they are still
1469 * removed from the stack upon return. !! FIXME !!
1470 *
1471 * This glue function contains only that part of the 16->32 thunk that is
1472 * variable (depending on the type and number of arguments); the glue routine
1473 * is part of a particular DLL and uses a routine provided by the core to
1474 * perform those actions that do not depend on the argument type.
1475 *
1476 * The 16->32 glue routine consists of a main entry point (which must be part
1477 * of the ELF .data section) and two auxillary routines (in the .text section).
1478 * The main entry point pushes address of the 'Thunk' auxillary routine onto
1479 * the stack and then jumps to the appropriate core CallFrom16... routine.
1480 * Furthermore, at a fixed position relative to the main entry point, the
1481 * function profile string is stored if relay debugging is active; this string
1482 * will be consulted by the debugging routines in the core to correctly
1483 * display the arguments.
1484 *
1485 * The core will perform the switch to 32-bit, and then call back to the
1486 * 'Thunk' auxillary routine. This routine is expected to perform the
1487 * following tasks:
1488 * - modify the auxillary routine address in the STACK16FRAME to now
1489 * point to the 'ThunkRet' routine
1490 * - convert arguemnts and push them onto the 32-bit stack
1491 * - call the 32-bit target routine
1492 *
1493 * After the target routine (and then the 'Thunk' routine) have returned,
1494 * the core part will switch back to 16-bit, and finally jump to the
1495 * 'ThunkRet' auxillary routine. This routine is expected to convert the
1496 * return value if necessary (%eax -> %dx:%ax), and perform the appropriate
1497 * return to the 16-bit caller (lret or lret $argsize).
1498 *
1499 * In the case of a 'register' routine, there is no 'ThunkRet' auxillary
1500 * routine, as the reloading of all registers and return to 16-bit code
1501 * is done by the core routine. The number of arguments to be popped off
1502 * the caller's stack must be returned (in %eax) by the 'Thunk' routine.
1503 *
1504 * NOTE: The generated routines contain only proper position-independent
1505 * code and may thus be used within shared objects (e.g. libwine.so
1506 * or elfdlls). The exception is the main entry point, which must
1507 * contain absolute relocations but cannot yet use the GOT; thus
1508 * this entry point is made part of the ELF .data section.
1509 */
1510 static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix )
1511 {
1512 int i, pos, argsize = 0;
1513 int short_ret = 0;
1514 int reg_func = 0;
1515 int usecdecl = 0;
1516 char *args = profile + 7;
1517
1518 /* Parse function type */
1519
1520 if (!strncmp( "c_", profile, 2 )) usecdecl = 1;
1521 else if (strncmp( "p_", profile, 2 ))
1522 {
1523 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1524 return;
1525 }
1526
1527 if (!strncmp( "word_", profile + 2, 5 )) short_ret = 1;
1528 else if (!strncmp( "regs_", profile + 2, 5 )) reg_func = 1;
1529 else if (strncmp( "long_", profile + 2, 5 ))
1530 {
1531 fprintf( stderr, "Invalid function name '%s', ignored\n", profile );
1532 return;
1533 }
1534
1535 for ( i = 0; args[i]; i++ )
1536 switch ( args[i] )
1537 {
1538 case 'w': /* word */
1539 case 's': /* s_word */
1540 argsize += 2;
1541 break;
1542
1543 case 'l': /* long or segmented pointer */
1544 case 'T': /* segmented pointer to null-terminated string */
1545 case 'p': /* linear pointer */
1546 case 't': /* linear pointer to null-terminated string */
1547 argsize += 4;
1548 break;
1549 }
1550
1551 /*
1552 * Build main entry point (in .data section)
1553 *
1554 * NOTE: If you change this, you must also change the retrieval of
1555 * the profile string relative to the main entry point address
1556 * (see BUILTIN_GetEntryPoint16 in if1632/builtin.c).
1557 */
1558 fprintf( outfile, "\t.data\n" );
1559 fprintf( outfile, "\t.globl " PREFIX "%s_CallFrom16_%s\n", prefix, profile );
1560 fprintf( outfile, PREFIX "%s_CallFrom16_%s:\n", prefix, profile );
1561 fprintf( outfile, "\tpushl $.L%s_Thunk_%s\n", prefix, profile );
1562 fprintf( outfile, "\tjmp " PREFIX "%s\n",
1563 !reg_func? "CallFrom16" : "CallFrom16Register" );
1564 if ( debugging )
1565 fprintf( outfile, "\t" STRING " \"%s\\0\"\n", profile );
1566
1567 /*
1568 * Build *Thunk* routine
1569 *
1570 * This routine gets called by the main CallFrom16 routine with
1571 * registers set up as follows:
1572 *
1573 * STACK16FRAME is completely set up on the 16-bit stack
1574 * DS, ES, SS: flat data segment
1575 * FS: current TEB
1576 * ESP: points to 32-bit stack
1577 * EBP: points to ebp member of last STACK32FRAME
1578 * EDX: points to current STACK16FRAME
1579 * ECX: points to ldt_copy
1580 */
1581
1582 fprintf( outfile, "\t.text\n" );
1583 fprintf( outfile, ".L%s_Thunk_%s:\n", prefix, profile );
1584
1585 if ( reg_func )
1586 fprintf( outfile, "\tleal 4(%%esp), %%eax\n"
1587 "\tpushl %%eax\n" );
1588 else
1589 fprintf( outfile, "\taddl $[.L%s_ThunkRet_%s - .L%s_Thunk_%s], %d(%%edx)\n",
1590 prefix, profile, prefix, profile,
1591 STACK16OFFSET(relay));
1592
1593 if ( !reg_func ) /* FIXME */
1594 {
1595 /* Copy the arguments */
1596 pos = (usecdecl? argsize : 0) + sizeof( STACK16FRAME );
1597 args = profile + 7;
1598 for ( i = strlen(args)-1; i >= 0; i-- )
1599 switch (args[i])
1600 {
1601 case 'w': /* word */
1602 if ( usecdecl ) pos -= 2;
1603 fprintf( outfile, "\tmovzwl %d(%%edx),%%eax\n", pos );
1604 fprintf( outfile, "\tpushl %%eax\n" );
1605 if ( !usecdecl ) pos += 2;
1606 break;
1607
1608 case 's': /* s_word */
1609 if ( usecdecl ) pos -= 2;
1610 fprintf( outfile, "\tmovswl %d(%%edx),%%eax\n", pos );
1611 fprintf( outfile, "\tpushl %%eax\n" );
1612 if ( !usecdecl ) pos += 2;
1613 break;
1614
1615 case 'l': /* long or segmented pointer */
1616 case 'T': /* segmented pointer to null-terminated string */
1617 if ( usecdecl ) pos -= 4;
1618 fprintf( outfile, "\tpushl %d(%%edx)\n", pos );
1619 if ( !usecdecl ) pos += 4;
1620 break;
1621
1622 case 'p': /* linear pointer */
1623 case 't': /* linear pointer to null-terminated string */
1624 if ( usecdecl ) pos -= 4;
1625 /* Get the selector */
1626 fprintf( outfile, "\tmovzwl %d(%%edx),%%eax\n", pos + 2 );
1627 /* Get the selector base */
1628 fprintf( outfile, "\tandl $0xfff8,%%eax\n" );
1629 fprintf( outfile, "\tpushl (%%ecx,%%eax)\n" );
1630 /* Add the offset */
1631 fprintf( outfile, "\tmovzwl %d(%%edx),%%eax\n", pos );
1632 fprintf( outfile, "\taddl %%eax,(%%esp)\n" );
1633 if ( !usecdecl ) pos += 4;
1634 break;
1635
1636 default:
1637 fprintf( stderr, "Unknown arg type '%c'\n", args[i] );
1638 }
1639 }
1640
1641 /* Call entry point */
1642 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(entry_point) );
1643
1644 if ( reg_func )
1645 fprintf( outfile, "\tmovl $%d, %%eax\n", argsize );
1646
1647 fprintf( outfile, "\tret\n" );
1648
1649
1650 /*
1651 * Build *ThunkRet* routine
1652 *
1653 * At this point, all registers are set up for return to 16-bit code.
1654 * EAX contains the function return value.
1655 * SS:SP point to the return address to the caller (on 16-bit stack).
1656 */
1657 if ( !reg_func )
1658 {
1659 fprintf( outfile, ".L%s_ThunkRet_%s:\n", prefix, profile );
1660
1661 if ( !short_ret )
1662 fprintf( outfile, "\tshldl $16, %%eax, %%edx\n" );
1663
1664 if ( !usecdecl && argsize )
1665 {
1666 fprintf( outfile, "\t.byte 0x66\n" );
1667 fprintf( outfile, "\tlret $%d\n", argsize );
1668 }
1669 else
1670 {
1671 fprintf( outfile, "\t.byte 0x66\n" );
1672 fprintf( outfile, "\tlret\n" );
1673 }
1674 }
1675 fprintf( outfile, "\n" );
1676 }
1677
1678 /*******************************************************************
1679 * BuildCallTo16Func
1680 *
1681 * Build a Wine-to-16-bit callback glue function. As above, this glue
1682 * routine will only contain the argument-type dependent part of the
1683 * thunk; the rest will be done by a routine provided by the core.
1684 *
1685 * Prototypes for the CallTo16 functions:
1686 * extern WORD PREFIX_CallTo16_word_xxx( FARPROC16 func, args... );
1687 * extern LONG PREFIX_CallTo16_long_xxx( FARPROC16 func, args... );
1688 *
1689 * The main entry point of the glue routine simply performs a call to
1690 * the proper core routine depending on the return type (WORD/LONG).
1691 * Note that the core will never perform a return from this call; however,
1692 * it will use the return address on the stack to access the other
1693 * argument-type dependent parts of the thunk. (If relay debugging is
1694 * active, the core routine will access the number of arguments stored
1695 * in the code section immediately precending the main entry point).
1696 *
1697 * After the core routine has performed the switch to 16-bit code, it
1698 * will call the argument-transfer routine provided by the glue code
1699 * immediately after the main entry point. This routine is expected
1700 * to transfer the arguments to the 16-bit stack, finish loading the
1701 * register for 16-bit code (%ds and %es must be loaded from %ss),
1702 * and call the 16-bit target.
1703 *
1704 * The target will return to a 16:16 return address provided by the core.
1705 * The core will finalize the switch back to 32-bit and the return to
1706 * the caller without additional support by the glue code. Note that
1707 * the 32-bit arguments will not be popped off the stack (hence the
1708 * CallTo... routine must *not* be declared WINAPI/CALLBACK).
1709 *
1710 */
1711 static void BuildCallTo16Func( FILE *outfile, char *profile, char *prefix )
1712 {
1713 char *args = profile + 5;
1714 int pos, short_ret = 0;
1715
1716 if (!strncmp( "word_", profile, 5 )) short_ret = 1;
1717 else if (strncmp( "long_", profile, 5 ))
1718 {
1719 fprintf( stderr, "Invalid function name '%s'.\n", profile );
1720 exit(1);
1721 }
1722
1723 if ( debugging )
1724 {
1725 /* Number of arguments (for relay debugging) */
1726 fprintf( outfile, "\n\t.align 4\n" );
1727 fprintf( outfile, "\t.long %d\n", strlen(args) );
1728 }
1729
1730 /* Main entry point */
1731
1732 #ifdef USE_STABS
1733 fprintf( outfile, ".stabs \"%s_CallTo16_%s:F1\",36,0,0," PREFIX "%s_CallTo16_%s\n",
1734 prefix, profile, prefix, profile);
1735 #endif
1736 fprintf( outfile, "\t.globl " PREFIX "%s_CallTo16_%s\n", prefix, profile );
1737 fprintf( outfile, PREFIX "%s_CallTo16_%s:\n", prefix, profile );
1738
1739 if ( short_ret )
1740 fprintf( outfile, "\tcall " PREFIX "CallTo16Word\n" );
1741 else
1742 fprintf( outfile, "\tcall " PREFIX "CallTo16Long\n" );
1743
1744 /* Return to caller (using STDCALL calling convention) */
1745 if ( strlen( args ) > 0 )
1746 fprintf( outfile, "\tret $%d\n", strlen( args ) * 4 );
1747 else
1748 {
1749 fprintf( outfile, "\tret\n" );
1750
1751 /* Note: the arg transfer routine must start exactly three bytes
1752 after the return stub, hence the nop's */
1753 fprintf( outfile, "\tnop\n" );
1754 fprintf( outfile, "\tnop\n" );
1755 }
1756
1757 /*
1758 * The core routine will call here with registers set up as follows:
1759 *
1760 * SS:SP points to the 16-bit stack
1761 * SS:BP points to the bp member of last STACK16FRAME
1762 * EDX points to the current STACK32FRAME
1763 * ECX contains the 16:16 return address
1764 * FS contains the last 16-bit %fs value
1765 */
1766
1767 /* Transfer the arguments */
1768
1769 pos = STACK32OFFSET(args) + 4; /* first arg is target address */
1770 while (*args)
1771 {
1772 switch (*args++)
1773 {
1774 case 'w': /* word */
1775 fprintf( outfile, "\tpushw %d(%%edx)\n", pos );
1776 break;
1777 case 'l': /* long */
1778 fprintf( outfile, "\tpushl %d(%%edx)\n", pos );
1779 break;
1780 default:
1781 fprintf( stderr, "Unexpected case '%c' in BuildCallTo16Func\n",
1782 args[-1] );
1783 }
1784 pos += 4;
1785 }
1786
1787 /* Push the return address */
1788
1789 fprintf( outfile, "\tpushl %%ecx\n" );
1790
1791 /* Push the called routine address */
1792
1793 fprintf( outfile, "\tpushl %d(%%edx)\n", STACK32OFFSET(args) );
1794
1795 /* Set %ds and %es (and %ax just in case) equal to %ss */
1796
1797 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
1798 fprintf( outfile, "\tmovw %%ax,%%ds\n" );
1799 fprintf( outfile, "\tmovw %%ax,%%es\n" );
1800
1801 /* Jump to the called routine */
1802
1803 fprintf( outfile, "\t.byte 0x66\n" );
1804 fprintf( outfile, "\tlret\n" );
1805 }
1806
1807
1808
1809 /*******************************************************************
1810 * BuildCallFrom16Core
1811 *
1812 * This routine builds the core routines used in 16->32 thunks:
1813 * CallFrom16, CallFrom16Register, and CallFrom16Thunk.
1814 *
1815 * CallFrom16 and CallFrom16Register are used by the 16->32 glue code
1816 * as described above. CallFrom16Thunk is a special variant used by
1817 * the implementation of the Win95 16->32 thunk functions C16ThkSL and
1818 * C16ThkSL01 and is implemented as follows:
1819 * On entry, the EBX register is set up to contain a flat pointer to the
1820 * 16-bit stack such that EBX+22 points to the first argument.
1821 * Then, the entry point is called, while EBP is set up to point
1822 * to the return address (on the 32-bit stack).
1823 * The called function returns with CX set to the number of bytes
1824 * to be popped of the caller's stack.
1825 *
1826 * Stack layout upon entry to the core routine (STACK16FRAME):
1827 * ... ...
1828 * (sp+22) word first 16-bit arg
1829 * (sp+20) word cs
1830 * (sp+18) word ip
1831 * (sp+16) word bp
1832 * (sp+12) long 32-bit entry point (reused for Win16 mutex recursion count)
1833 * (sp+8) long cs of 16-bit entry point
1834 * (sp+4) long ip of 16-bit entry point
1835 * (sp) long auxillary relay function address
1836 *
1837 * Added on the stack:
1838 * (sp-2) word saved gs
1839 * (sp-4) word saved fs
1840 * (sp-6) word saved es
1841 * (sp-8) word saved ds
1842 * (sp-12) long saved ebp
1843 * (sp-16) long saved ecx
1844 * (sp-20) long saved edx
1845 * (sp-24) long saved previous stack
1846 */
1847 static void BuildCallFrom16Core( FILE *outfile, int reg_func, int thunk )
1848 {
1849 char *name = thunk? "Thunk" : reg_func? "Register" : "";
1850
1851 /* Function header */
1852 fprintf( outfile, "\n\t.align 4\n" );
1853 #ifdef USE_STABS
1854 fprintf( outfile, ".stabs \"CallFrom16%s:F1\",36,0,0," PREFIX "CallFrom16%s\n",
1855 name, name);
1856 #endif
1857 fprintf( outfile, "\t.globl " PREFIX "CallFrom16%s\n", name );
1858 fprintf( outfile, PREFIX "CallFrom16%s:\n", name );
1859
1860 /* No relay function for 'thunk' */
1861 if ( thunk )
1862 fprintf( outfile, "\tpushl $0\n" );
1863
1864 /* Create STACK16FRAME (except STACK32FRAME link) */
1865 fprintf( outfile, "\tpushw %%gs\n" );
1866 fprintf( outfile, "\tpushw %%fs\n" );
1867 fprintf( outfile, "\tpushw %%es\n" );
1868 fprintf( outfile, "\tpushw %%ds\n" );
1869 fprintf( outfile, "\tpushl %%ebp\n" );
1870 fprintf( outfile, "\tpushl %%ecx\n" );
1871 fprintf( outfile, "\tpushl %%edx\n" );
1872
1873 if ( UsePIC )
1874 {
1875 /* Get Global Offset Table into %ecx */
1876 fprintf( outfile, "\tcall .LCallFrom16%s.getgot1\n", name );
1877 fprintf( outfile, ".LCallFrom16%s.getgot1:\n", name );
1878 fprintf( outfile, "\tpopl %%ecx\n" );
1879 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot1], %%ecx\n", name );
1880 }
1881
1882 /* Load 32-bit segment registers */
1883 fprintf( outfile, "\tmovw $0x%04x, %%dx\n", Data_Selector );
1884 #ifdef __svr4__
1885 fprintf( outfile, "\tdata16\n");
1886 #endif
1887 fprintf( outfile, "\tmovw %%dx, %%ds\n" );
1888 #ifdef __svr4__
1889 fprintf( outfile, "\tdata16\n");
1890 #endif
1891 fprintf( outfile, "\tmovw %%dx, %%es\n" );
1892
1893 if ( UsePIC )
1894 {
1895 fprintf( outfile, "\tmovl " PREFIX "SYSLEVEL_Win16CurrentTeb@GOT(%%ecx), %%edx\n" );
1896 fprintf( outfile, "\tmovw (%%edx), %%fs\n" );
1897 }
1898 else
1899 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb, %%fs\n" );
1900
1901 /* Get address of ldt_copy array into %ecx */
1902 if ( UsePIC )
1903 fprintf( outfile, "\tmovl " PREFIX "ldt_copy@GOT(%%ecx), %%ecx\n" );
1904 else
1905 fprintf( outfile, "\tmovl $" PREFIX "ldt_copy, %%ecx\n" );
1906
1907 /* Translate STACK16FRAME base to flat offset in %edx */
1908 fprintf( outfile, "\tmovw %%ss, %%dx\n" );
1909 fprintf( outfile, "\tandl $0xfff8, %%edx\n" );
1910 fprintf( outfile, "\tmovl (%%ecx,%%edx), %%edx\n" );
1911 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
1912 fprintf( outfile, "\tleal -4(%%ebp,%%edx), %%edx\n" );
1913 /* -4 since STACK16FRAME not yet complete! */
1914
1915 /* Get the 32-bit stack pointer from the TEB and complete STACK16FRAME */
1916 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d), %%ebp\n", STACKOFFSET );
1917 fprintf( outfile, "\tpushl %%ebp\n" );
1918
1919 /* Switch stacks */
1920 #ifdef __svr4__
1921 fprintf( outfile,"\tdata16\n");
1922 #endif
1923 fprintf( outfile, "\t.byte 0x64\n\tmovw %%ss, (%d)\n", STACKOFFSET + 2 );
1924 fprintf( outfile, "\t.byte 0x64\n\tmovw %%sp, (%d)\n", STACKOFFSET );
1925 fprintf( outfile, "\tpushl %%ds\n" );
1926 fprintf( outfile, "\tpopl %%ss\n" );
1927 fprintf( outfile, "\tmovl %%ebp, %%esp\n" );
1928 fprintf( outfile, "\taddl $%d, %%ebp\n", STRUCTOFFSET(STACK32FRAME, ebp) );
1929
1930
1931 /* At this point:
1932 STACK16FRAME is completely set up
1933 DS, ES, SS: flat data segment
1934 FS: current TEB
1935 ESP: points to last STACK32FRAME
1936 EBP: points to ebp member of last STACK32FRAME
1937 EDX: points to current STACK16FRAME
1938 ECX: points to ldt_copy
1939 all other registers: unchanged */
1940
1941 /* Special case: C16ThkSL stub */
1942 if ( thunk )
1943 {
1944 /* Set up registers as expected and call thunk */
1945 fprintf( outfile, "\tleal %d(%%edx), %%ebx\n", sizeof(STACK16FRAME)-22 );
1946 fprintf( outfile, "\tleal -4(%%esp), %%ebp\n" );
1947
1948 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(entry_point) );
1949
1950 /* Switch stack back */
1951 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
1952 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
1953 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
1954
1955 /* Restore registers and return directly to caller */
1956 fprintf( outfile, "\taddl $8, %%esp\n" );
1957 fprintf( outfile, "\tpopl %%ebp\n" );
1958 fprintf( outfile, "\tpopw %%ds\n" );
1959 fprintf( outfile, "\tpopw %%es\n" );
1960 fprintf( outfile, "\tpopw %%fs\n" );
1961 fprintf( outfile, "\tpopw %%gs\n" );
1962 fprintf( outfile, "\taddl $18, %%esp\n" );
1963
1964 fprintf( outfile, "\txorb %%ch, %%ch\n" );
1965 fprintf( outfile, "\tpopl %%ebx\n" );
1966 fprintf( outfile, "\taddw %%cx, %%sp\n" );
1967 fprintf( outfile, "\tpush %%ebx\n" );
1968
1969 fprintf( outfile, "\t.byte 0x66\n" );
1970 fprintf( outfile, "\tlret\n" );
1971
1972 return;
1973 }
1974
1975
1976 /* Build register CONTEXT */
1977 if ( reg_func )
1978 {
1979 fprintf( outfile, "\tsubl $%d, %%esp\n", sizeof(CONTEXT86) );
1980
1981 fprintf( outfile, "\tpushfl\n" );
1982 fprintf( outfile, "\tpopl %d(%%esp)\n", CONTEXTOFFSET(EFlags) );
1983
1984 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eax) );
1985 fprintf( outfile, "\tmovl %%ebx, %d(%%esp)\n", CONTEXTOFFSET(Ebx) );
1986 fprintf( outfile, "\tmovl %%esi, %d(%%esp)\n", CONTEXTOFFSET(Esi) );
1987 fprintf( outfile, "\tmovl %%edi, %d(%%esp)\n", CONTEXTOFFSET(Edi) );
1988
1989 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ebp) );
1990 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ebp) );
1991 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ecx) );
1992 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ecx) );
1993 fprintf( outfile, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(edx) );
1994 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Edx) );
1995
1996 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ds) );
1997 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegDs) );
1998 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(es) );
1999 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegEs) );
2000 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(fs) );
2001 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegFs) );
2002 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(gs) );
2003 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegGs) );
2004
2005 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(cs) );
2006 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegCs) );
2007 fprintf( outfile, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ip) );
2008 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eip) );
2009
2010 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET+2 );
2011 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegSs) );
2012 fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET );
2013 fprintf( outfile, "\taddl $%d, %%eax\n", STACK16OFFSET(ip) );
2014 fprintf( outfile, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Esp) );
2015 #if 0
2016 fprintf( outfile, "\tfsave %d(%%esp)\n", CONTEXTOFFSET(FloatSave) );
2017 #endif
2018 }
2019
2020
2021 /* Print debug info before call */
2022 if ( debugging )
2023 {
2024 if ( UsePIC )
2025 {
2026 fprintf( outfile, "\tpushl %%ebx\n" );
2027
2028 /* Get Global Offset Table into %ebx (for PLT call) */
2029 fprintf( outfile, "\tcall .LCallFrom16%s.getgot2\n", name );
2030 fprintf( outfile, ".LCallFrom16%s.getgot2:\n", name );
2031 fprintf( outfile, "\tpopl %%ebx\n" );
2032 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot2], %%ebx\n", name );
2033 }
2034
2035 fprintf( outfile, "\tpushl %%ecx\n" );
2036 fprintf( outfile, "\tpushl %%edx\n" );
2037 if ( reg_func )
2038 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
2039 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
2040 else
2041 fprintf( outfile, "\tpushl $0\n" );
2042
2043 if ( UsePIC )
2044 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16@PLT\n ");
2045 else
2046 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16\n ");
2047
2048 fprintf( outfile, "\tpopl %%edx\n" );
2049 fprintf( outfile, "\tpopl %%edx\n" );
2050 fprintf( outfile, "\tpopl %%ecx\n" );
2051
2052 if ( UsePIC )
2053 fprintf( outfile, "\tpopl %%ebx\n" );
2054 }
2055
2056 /* Call *Thunk* relay routine (which will call the API entry point) */
2057 fprintf( outfile, "\tcall *%d(%%edx)\n", STACK16OFFSET(relay) );
2058
2059 /* Print debug info after call */
2060 if ( debugging )
2061 {
2062 if ( UsePIC )
2063 {
2064 fprintf( outfile, "\tpushl %%ebx\n" );
2065
2066 /* Get Global Offset Table into %ebx (for PLT call) */
2067 fprintf( outfile, "\tcall .LCallFrom16%s.getgot3\n", name );
2068 fprintf( outfile, ".LCallFrom16%s.getgot3:\n", name );
2069 fprintf( outfile, "\tpopl %%ebx\n" );
2070 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot3], %%ebx\n", name );
2071 }
2072
2073 fprintf( outfile, "\tpushl %%eax\n" );
2074 if ( reg_func )
2075 fprintf( outfile, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
2076 sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME, ebp) );
2077 else
2078 fprintf( outfile, "\tpushl $0\n" );
2079
2080 if ( UsePIC )
2081 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret@PLT\n ");
2082 else
2083 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret\n ");
2084
2085 fprintf( outfile, "\tpopl %%eax\n" );
2086 fprintf( outfile, "\tpopl %%eax\n" );
2087
2088 if ( UsePIC )
2089 fprintf( outfile, "\tpopl %%ebx\n" );
2090 }
2091
2092
2093 if ( reg_func )
2094 {
2095 fprintf( outfile, "\tmovl %%esp, %%ebx\n" );
2096
2097 /* Switch stack back */
2098 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2099 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2100 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2101
2102 /* Restore all registers from CONTEXT */
2103 fprintf( outfile, "\tmovw %d(%%ebx), %%ss\n", CONTEXTOFFSET(SegSs) );
2104 fprintf( outfile, "\tmovl %d(%%ebx), %%esp\n", CONTEXTOFFSET(Esp) );
2105 fprintf( outfile, "\tleal 4(%%esp, %%eax), %%esp\n" );
2106
2107 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(SegCs) );
2108 fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(Eip) );
2109 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(EFlags) );
2110 fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(SegDs) );
2111
2112 fprintf( outfile, "\tmovw %d(%%ebx), %%es\n", CONTEXTOFFSET(SegEs) );
2113 fprintf( outfile, "\tmovw %d(%%ebx), %%fs\n", CONTEXTOFFSET(SegFs) );
2114 fprintf( outfile, "\tmovw %d(%%ebx), %%gs\n", CONTEXTOFFSET(SegGs) );
2115
2116 fprintf( outfile, "\tmovl %d(%%ebx), %%ebp\n", CONTEXTOFFSET(Ebp) );
2117 fprintf( outfile, "\tmovl %d(%%ebx), %%esi\n", CONTEXTOFFSET(Esi) );
2118 fprintf( outfile, "\tmovl %d(%%ebx), %%edi\n", CONTEXTOFFSET(Edi) );
2119 fprintf( outfile, "\tmovl %d(%%ebx), %%eax\n", CONTEXTOFFSET(Eax) );
2120 fprintf( outfile, "\tmovl %d(%%ebx), %%edx\n", CONTEXTOFFSET(Edx) );
2121 fprintf( outfile, "\tmovl %d(%%ebx), %%ecx\n", CONTEXTOFFSET(Ecx) );
2122 fprintf( outfile, "\tmovl %d(%%ebx), %%ebx\n", CONTEXTOFFSET(Ebx) );
2123
2124 fprintf( outfile, "\tpopl %%ds\n" );
2125 fprintf( outfile, "\tpopfl\n" );
2126 fprintf( outfile, "\t.byte 0x66\n" );
2127 fprintf( outfile, "\tlret\n" );
2128 }
2129 else
2130 {
2131 /* Switch stack back */
2132 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2133 fprintf( outfile, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET );
2134 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2135
2136 /* Set flags according to return value */
2137 fprintf( outfile, "\torl %%eax, %%eax\n" );
2138
2139 /* Restore registers and return to *ThunkRet* routine */
2140 fprintf( outfile, "\tpopl %%edx\n" );
2141 fprintf( outfile, "\tpopl %%ecx\n" );
2142 fprintf( outfile, "\tpopl %%ebp\n" );
2143 fprintf( outfile, "\tpopw %%ds\n" );
2144 fprintf( outfile, "\tpopw %%es\n" );
2145 fprintf( outfile, "\tpopw %%fs\n" );
2146 fprintf( outfile, "\tpopw %%gs\n" );
2147 fprintf( outfile, "\tret $14\n" );
2148 }
2149 }
2150
2151
2152 /*******************************************************************
2153 * BuildCallTo16Core
2154 *
2155 * This routine builds the core routines used in 32->16 thunks:
2156 * CallTo16Word, CallTo16Long, CallTo16RegisterShort, and
2157 * CallTo16RegisterLong.
2158 *
2159 * CallTo16Word and CallTo16Long are used by the 32->16 glue code
2160 * as described above. The register functions can be called directly:
2161 *
2162 * extern void CALLBACK CallTo16RegisterShort( const CONTEXT86 *context, int nb_args );
2163 * extern void CALLBACK CallTo16RegisterLong ( const CONTEXT86 *context, int nb_args );
2164 *
2165 * They call to 16-bit code with all registers except SS:SP set up as specified
2166 * by the 'context' structure, and SS:SP set to point to the current 16-bit
2167 * stack, decremented by the value specified in the 'nb_args' argument.
2168 */
2169
2170 static void BuildCallTo16Core( FILE *outfile, int short_ret, int reg_func )
2171 {
2172 char *name = reg_func == 2 ? "RegisterLong" :
2173 reg_func == 1 ? "RegisterShort" :
2174 short_ret? "Word" : "Long";
2175
2176 /* Function header */
2177 fprintf( outfile, "\n\t.align 4\n" );
2178 #ifdef USE_STABS
2179 fprintf( outfile, ".stabs \"CallTo16%s:F1\",36,0,0," PREFIX "CallTo16%s\n",
2180 name, name);
2181 #endif
2182 fprintf( outfile, "\t.globl " PREFIX "CallTo16%s\n", name );
2183 fprintf( outfile, PREFIX "CallTo16%s:\n", name );
2184
2185 /* No relay stub for 'register' functions */
2186 if ( reg_func )
2187 fprintf( outfile, "\tpushl $0\n" );
2188
2189 /* Function entry sequence */
2190 fprintf( outfile, "\tpushl %%ebp\n" );
2191 fprintf( outfile, "\tmovl %%esp, %%ebp\n" );
2192
2193 /* Save the 32-bit registers */
2194 fprintf( outfile, "\tpushl %%ebx\n" );
2195 fprintf( outfile, "\tpushl %%ecx\n" );
2196 fprintf( outfile, "\tpushl %%edx\n" );
2197 fprintf( outfile, "\tpushl %%esi\n" );
2198 fprintf( outfile, "\tpushl %%edi\n" );
2199
2200 if ( UsePIC )
2201 {
2202 /* Get Global Offset Table into %ebx */
2203 fprintf( outfile, "\tcall .LCallTo16%s.getgot1\n", name );
2204 fprintf( outfile, ".LCallTo16%s.getgot1:\n", name );
2205 fprintf( outfile, "\tpopl %%ebx\n" );
2206 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot1], %%ebx\n", name );
2207 }
2208
2209 /* Move relay target address to %edi */
2210 if ( !reg_func )
2211 {
2212 fprintf( outfile, "\tmovl 4(%%ebp), %%edi\n" );
2213 fprintf( outfile, "\taddl $3, %%edi\n" );
2214 }
2215
2216 /* Enter Win16 Mutex */
2217 if ( UsePIC )
2218 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock@PLT\n" );
2219 else
2220 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock\n" );
2221
2222 /* Print debugging info */
2223 if (debugging)
2224 {
2225 /* Push number of arguments (from relay stub) */
2226 if ( reg_func )
2227 fprintf( outfile, "\tpushl $-1\n" );
2228 else
2229 fprintf( outfile, "\tpushl -12(%%edi)\n" );
2230
2231 /* Push the address of the first argument */
2232 fprintf( outfile, "\tleal 12(%%ebp),%%eax\n" );
2233 fprintf( outfile, "\tpushl %%eax\n" );
2234
2235 if ( UsePIC )
2236 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16@PLT\n" );
2237 else
2238 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16\n" );
2239
2240 fprintf( outfile, "\tpopl %%eax\n" );
2241 fprintf( outfile, "\tpopl %%eax\n" );
2242 }
2243
2244 /* Get return address */
2245 if ( UsePIC )
2246 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr@GOTOFF(%%ebx), %%ecx\n" );
2247 else
2248 fprintf( outfile, "\tmovl " PREFIX "CallTo16_RetAddr, %%ecx\n" );
2249
2250 /* Call the actual CallTo16 routine (simulate a lcall) */
2251 fprintf( outfile, "\tpushl %%cs\n" );
2252 fprintf( outfile, "\tcall .LCallTo16%s\n", name );
2253
2254 /* Convert and push return value */
2255 if ( short_ret )
2256 {
2257 fprintf( outfile, "\tmovzwl %%ax, %%eax\n" );
2258 fprintf( outfile, "\tpushl %%eax\n" );
2259 }
2260 else if ( reg_func != 2 )
2261 {
2262 fprintf( outfile, "\tshll $16,%%edx\n" );
2263 fprintf( outfile, "\tmovw %%ax,%%dx\n" );
2264 fprintf( outfile, "\tpushl %%edx\n" );
2265 }
2266 else
2267 fprintf( outfile, "\tpushl %%eax\n" );
2268
2269 if ( UsePIC )
2270 {
2271 /* Get Global Offset Table into %ebx (might have been overwritten) */
2272 fprintf( outfile, "\tcall .LCallTo16%s.getgot2\n", name );
2273 fprintf( outfile, ".LCallTo16%s.getgot2:\n", name );
2274 fprintf( outfile, "\tpopl %%ebx\n" );
2275 fprintf( outfile, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot2], %%ebx\n", name );
2276 }
2277
2278 /* Print debugging info */
2279 if (debugging)
2280 {
2281 if ( UsePIC )
2282 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret@PLT\n" );
2283 else
2284 fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret\n" );
2285 }
2286
2287 /* Leave Win16 Mutex */
2288 if ( UsePIC )
2289 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock@PLT\n" );
2290 else
2291 fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock\n" );
2292
2293 /* Get return value */
2294 fprintf( outfile, "\tpopl %%eax\n" );
2295
2296 /* Restore the 32-bit registers */
2297 fprintf( outfile, "\tpopl %%edi\n" );
2298 fprintf( outfile, "\tpopl %%esi\n" );
2299 fprintf( outfile, "\tpopl %%edx\n" );
2300 fprintf( outfile, "\tpopl %%ecx\n" );
2301 fprintf( outfile, "\tpopl %%ebx\n" );
2302
2303 /* Function exit sequence */
2304 fprintf( outfile, "\tpopl %%ebp\n" );
2305
2306 if ( !reg_func )
2307 fprintf( outfile, "\tret\n" ); /* return to relay return stub */
2308 else
2309 {
2310 fprintf( outfile, "\taddl $4, %%esp\n" );
2311 fprintf( outfile, "\tret $8\n" );
2312 }
2313
2314
2315 /* Start of the actual CallTo16 routine */
2316
2317 fprintf( outfile, ".LCallTo16%s:\n", name );
2318
2319 /* Complete STACK32FRAME */
2320 fprintf( outfile, "\t.byte 0x64\n\tpushl (%d)\n", STACKOFFSET );
2321 fprintf( outfile, "\tmovl %%esp,%%edx\n" );
2322
2323 /* Switch to the 16-bit stack */
2324 #ifdef __svr4__
2325 fprintf( outfile,"\tdata16\n");
2326 #endif
2327 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2);
2328 fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET );
2329 fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET );
2330
2331 if (reg_func)
2332 {
2333 /* Add the specified offset to the new sp */
2334 fprintf( outfile, "\tsubw %d(%%edx), %%sp\n", STACK32OFFSET(args)+4 );
2335
2336 /* Push the return address
2337 * With sreg suffix, we push 16:16 address (normal lret)
2338 * With lreg suffix, we push 16:32 address (0x66 lret, for KERNEL32_45)
2339 */
2340 if (reg_func == 1)
2341 fprintf( outfile, "\tpushl %%ecx\n" );
2342 else
2343 {
2344 fprintf( outfile, "\tshldl $16, %%ecx, %%eax\n" );
2345 fprintf( outfile, "\tpushw $0\n" );
2346 fprintf( outfile, "\tpushw %%ax\n" );
2347 fprintf( outfile, "\tpushw $0\n" );
2348 fprintf( outfile, "\tpushw %%cx\n" );
2349 }
2350
2351 /* Push the called routine address */
2352 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", STACK32OFFSET(args) );
2353 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegCs) );
2354 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(Eip) );
2355
2356 /* Get the registers */
2357 fprintf( outfile, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegDs) );
2358 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegEs) );
2359 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2360 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegFs) );
2361 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2362 fprintf( outfile, "\tmovl %d(%%edx),%%ebp\n", CONTEXTOFFSET(Ebp) );
2363 fprintf( outfile, "\tmovl %d(%%edx),%%esi\n", CONTEXTOFFSET(Esi) );
2364 fprintf( outfile, "\tmovl %d(%%edx),%%edi\n", CONTEXTOFFSET(Edi) );
2365 fprintf( outfile, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(Eax) );
2366 fprintf( outfile, "\tmovl %d(%%edx),%%ebx\n", CONTEXTOFFSET(Ebx) );
2367 fprintf( outfile, "\tmovl %d(%%edx),%%ecx\n", CONTEXTOFFSET(Ecx) );
2368 fprintf( outfile, "\tmovl %d(%%edx),%%edx\n", CONTEXTOFFSET(Edx) );
2369
2370 /* Get the 16-bit ds */
2371 fprintf( outfile, "\tpopw %%ds\n" );
2372
2373 /* Jump to the called routine */
2374 fprintf( outfile, "\t.byte 0x66\n" );
2375 fprintf( outfile, "\tlret\n" );
2376 }
2377 else /* not a register function */
2378 {
2379 /* Make %bp point to the previous stackframe (built by CallFrom16) */
2380 fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" );
2381 fprintf( outfile, "\tleal %d(%%ebp),%%ebp\n", STACK16OFFSET(bp) );
2382
2383 /* Set %fs to the value saved by the last CallFrom16 */
2384 fprintf( outfile, "\tmovw %d(%%ebp),%%ax\n", STACK16OFFSET(fs)-STACK16OFFSET(bp) );
2385 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2386
2387 /* Jump to the relay code */
2388 fprintf( outfile, "\tjmp *%%edi\n" );
2389 }
2390 }
2391
2392 /*******************************************************************
2393 * BuildRet16Func
2394 *
2395 * Build the return code for 16-bit callbacks
2396 */
2397 static void BuildRet16Func( FILE *outfile )
2398 {
2399 /*
2400 * Note: This must reside in the .data section to allow
2401 * run-time relocation of the SYSLEVEL_Win16CurrentTeb symbol
2402 */
2403
2404 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_Ret\n" );
2405 fprintf( outfile, PREFIX "CallTo16_Ret:\n" );
2406
2407 /* Restore 32-bit segment registers */
2408
2409 fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector );
2410 #ifdef __svr4__
2411 fprintf( outfile, "\tdata16\n");
2412 #endif
2413 fprintf( outfile, "\tmovw %%bx,%%ds\n" );
2414 #ifdef __svr4__
2415 fprintf( outfile, "\tdata16\n");
2416 #endif
2417 fprintf( outfile, "\tmovw %%bx,%%es\n" );
2418
2419 fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb,%%fs\n" );
2420
2421 /* Restore the 32-bit stack */
2422
2423 #ifdef __svr4__
2424 fprintf( outfile, "\tdata16\n");
2425 #endif
2426 fprintf( outfile, "\tmovw %%bx,%%ss\n" );
2427 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%esp\n", STACKOFFSET );
2428 fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET );
2429
2430 /* Return to caller */
2431
2432 fprintf( outfile, "\tlret\n" );
2433
2434 /* Declare the return address variable */
2435
2436 fprintf( outfile, "\n\t.globl " PREFIX "CallTo16_RetAddr\n" );
2437 fprintf( outfile, PREFIX "CallTo16_RetAddr:\t.long 0\n" );
2438 }
2439
2440 /*******************************************************************
2441 * BuildCallTo32CBClient
2442 *
2443 * Call a CBClient relay stub from 32-bit code (KERNEL.620).
2444 *
2445 * Since the relay stub is itself 32-bit, this should not be a problem;
2446 * unfortunately, the relay stubs are expected to switch back to a
2447 * 16-bit stack (and 16-bit code) after completion :-(
2448 *
2449 * This would conflict with our 16- vs. 32-bit stack handling, so
2450 * we simply switch *back* to our 32-bit stack before returning to
2451 * the caller ...
2452 *
2453 * The CBClient relay stub expects to be called with the following
2454 * 16-bit stack layout, and with ebp and ebx pointing into the 16-bit
2455 * stack at the designated places:
2456 *
2457 * ...
2458 * (ebp+14) original arguments to the callback routine
2459 * (ebp+10) far return address to original caller
2460 * (ebp+6) Thunklet target address
2461 * (ebp+2) Thunklet relay ID code
2462 * (ebp) BP (saved by CBClientGlueSL)
2463 * (ebp-2) SI (saved by CBClientGlueSL)
2464 * (ebp-4) DI (saved by CBClientGlueSL)
2465 * (ebp-6) DS (saved by CBClientGlueSL)
2466 *
2467 * ... buffer space used by the 16-bit side glue for temp copies
2468 *
2469 * (ebx+4) far return address to 16-bit side glue code
2470 * (ebx) saved 16-bit ss:sp (pointing to ebx+4)
2471 *
2472 * The 32-bit side glue code accesses both the original arguments (via ebp)
2473 * and the temporary copies prepared by the 16-bit side glue (via ebx).
2474 * After completion, the stub will load ss:sp from the buffer at ebx
2475 * and perform a far return to 16-bit code.
2476 *
2477 * To trick the relay stub into returning to us, we replace the 16-bit
2478 * return address to the glue code by a cs:ip pair pointing to our
2479 * return entry point (the original return address is saved first).
2480 * Our return stub thus called will then reload the 32-bit ss:esp and
2481 * return to 32-bit code (by using and ss:esp value that we have also
2482 * pushed onto the 16-bit stack before and a cs:eip values found at
2483 * that position on the 32-bit stack). The ss:esp to be restored is
2484 * found relative to the 16-bit stack pointer at:
2485 *
2486 * (ebx-4) ss (flat)
2487 * (ebx-8) sp (32-bit stack pointer)
2488 *
2489 * The second variant of this routine, CALL32_CBClientEx, which is used
2490 * to implement KERNEL.621, has to cope with yet another problem: Here,
2491 * the 32-bit side directly returns to the caller of the CBClient thunklet,
2492 * restoring registers saved by CBClientGlueSL and cleaning up the stack.
2493 * As we have to return to our 32-bit code first, we have to adapt the
2494 * layout of our temporary area so as to include values for the registers
2495 * that are to be restored, and later (in the implementation of KERNEL.621)
2496 * we *really* restore them. The return stub restores DS, DI, SI, and BP
2497 * from the stack, skips the next 8 bytes (CBClient relay code / target),
2498 * and then performs a lret NN, where NN is the number of arguments to be
2499 * removed. Thus, we prepare our temporary area as follows:
2500 *
2501 * (ebx+22) 16-bit cs (this segment)
2502 * (ebx+20) 16-bit ip ('16-bit' return entry point)
2503 * (ebx+16) 32-bit ss (flat)
2504 * (ebx+12) 32-bit sp (32-bit stack pointer)
2505 * (ebx+10) 16-bit bp (points to ebx+24)
2506 * (ebx+8) 16-bit si (ignored)
2507 * (ebx+6) 16-bit di (ignored)
2508 * (ebx+4) 16-bit ds (we actually use the flat DS here)
2509 * (ebx+2) 16-bit ss (16-bit stack segment)
2510 * (ebx+0) 16-bit sp (points to ebx+4)
2511 *
2512 * Note that we ensure that DS is not changed and remains the flat segment,
2513 * and the 32-bit stack pointer our own return stub needs fits just
2514 * perfectly into the 8 bytes that are skipped by the Windows stub.
2515 * One problem is that we have to determine the number of removed arguments,
2516 * as these have to be really removed in KERNEL.621. Thus, the BP value
2517 * that we place in the temporary area to be restored, contains the value
2518 * that SP would have if no arguments were removed. By comparing the actual
2519 * value of SP with this value in our return stub we can compute the number
2520 * of removed arguments. This is then returned to KERNEL.621.
2521 *
2522 * The stack layout of this function:
2523 * (ebp+20) nArgs pointer to variable receiving nr. of args (Ex only)
2524 * (ebp+16) esi pointer to caller's esi value
2525 * (ebp+12) arg ebp value to be set for relay stub
2526 * (ebp+8) func CBClient relay stub address
2527 * (ebp+4) ret addr
2528 * (ebp) ebp
2529 */
2530 static void BuildCallTo32CBClient( FILE *outfile, BOOL isEx )
2531 {
2532 char *name = isEx? "CBClientEx" : "CBClient";
2533 int size = isEx? 24 : 12;
2534
2535 /* Function header */
2536
2537 fprintf( outfile, "\n\t.align 4\n" );
2538 #ifdef USE_STABS
2539 fprintf( outfile, ".stabs \"CALL32_%s:F1\",36,0,0," PREFIX "CALL32_%s\n",
2540 name, name );
2541 #endif
2542 fprintf( outfile, "\t.globl " PREFIX "CALL32_%s\n", name );
2543 fprintf( outfile, PREFIX "CALL32_%s:\n", name );
2544
2545 /* Entry code */
2546
2547 fprintf( outfile, "\tpushl %%ebp\n" );
2548 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2549 fprintf( outfile, "\tpushl %%edi\n" );
2550 fprintf( outfile, "\tpushl %%esi\n" );
2551 fprintf( outfile, "\tpushl %%ebx\n" );
2552
2553 /* Get the 16-bit stack */
2554
2555 fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET);
2556
2557 /* Convert it to a flat address */
2558
2559 fprintf( outfile, "\tshldl $16,%%ebx,%%eax\n" );
2560 fprintf( outfile, "\tandl $0xfff8,%%eax\n" );
2561 fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%esi\n" );
2562 fprintf( outfile, "\tmovw %%bx,%%ax\n" );
2563 fprintf( outfile, "\taddl %%eax,%%esi\n" );
2564
2565 /* Allocate temporary area (simulate STACK16_PUSH) */
2566
2567 fprintf( outfile, "\tpushf\n" );
2568 fprintf( outfile, "\tcld\n" );
2569 fprintf( outfile, "\tleal -%d(%%esi), %%edi\n", size );
2570 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2571 fprintf( outfile, "\trep\n\tmovsb\n" );
2572 fprintf( outfile, "\tpopf\n" );
2573
2574 fprintf( outfile, "\t.byte 0x64\n\tsubw $%d,(%d)\n", size, STACKOFFSET );
2575
2576 fprintf( outfile, "\tpushl %%edi\n" ); /* remember address */
2577
2578 /* Set up temporary area */
2579
2580 if ( !isEx )
2581 {
2582 fprintf( outfile, "\tleal 4(%%edi), %%edi\n" );
2583
2584 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2585 fprintf( outfile, "\tmovl %%eax, -8(%%edi)\n" ); /* 32-bit sp */
2586
2587 fprintf( outfile, "\tmovl %%ss, %%ax\n" );
2588 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2589 fprintf( outfile, "\tmovl %%eax, -4(%%edi)\n" ); /* 32-bit ss */
2590
2591 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 + 4 );
2592 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" ); /* 16-bit ss:sp */
2593
2594 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2595 fprintf( outfile, "\tmovl %%eax, 4(%%edi)\n" ); /* overwrite return address */
2596 }
2597 else
2598 {
2599 fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 );
2600 fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" );
2601
2602 fprintf( outfile, "\tmovl %%ds, %%ax\n" );
2603 fprintf( outfile, "\tmovw %%ax, 4(%%edi)\n" );
2604
2605 fprintf( outfile, "\taddl $20, %%ebx\n" );
2606 fprintf( outfile, "\tmovw %%bx, 10(%%edi)\n" );
2607
2608 fprintf( outfile, "\tleal -8(%%esp), %%eax\n" );
2609 fprintf( outfile, "\tmovl %%eax, 12(%%edi)\n" );
2610
2611 fprintf( outfile, "\tmovl %%ss, %%ax\n" );
2612 fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" );
2613 fprintf( outfile, "\tmovl %%eax, 16(%%edi)\n" );
2614
2615 fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name );
2616 fprintf( outfile, "\tmovl %%eax, 20(%%edi)\n" );
2617 }
2618
2619 /* Set up registers and call CBClient relay stub (simulating a far call) */
2620
2621 fprintf( outfile, "\tmovl 16(%%ebp), %%esi\n" );
2622 fprintf( outfile, "\tmovl (%%esi), %%esi\n" );
2623
2624 fprintf( outfile, "\tmovl %%edi, %%ebx\n" );
2625 fprintf( outfile, "\tmovl 8(%%ebp), %%eax\n" );
2626 fprintf( outfile, "\tmovl 12(%%ebp), %%ebp\n" );
2627
2628 fprintf( outfile, "\tpushl %%cs\n" );
2629 fprintf( outfile, "\tcall *%%eax\n" );
2630
2631 /* Return new esi value to caller */
2632
2633 fprintf( outfile, "\tmovl 32(%%esp), %%edi\n" );
2634 fprintf( outfile, "\tmovl %%esi, (%%edi)\n" );
2635
2636 /* Cleanup temporary area (simulate STACK16_POP) */
2637
2638 fprintf( outfile, "\tpop %%esi\n" );
2639
2640 fprintf( outfile, "\tpushf\n" );
2641 fprintf( outfile, "\tstd\n" );
2642 fprintf( outfile, "\tdec %%esi\n" );
2643 fprintf( outfile, "\tleal %d(%%esi), %%edi\n", size );
2644 fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) );
2645 fprintf( outfile, "\trep\n\tmovsb\n" );
2646 fprintf( outfile, "\tpopf\n" );
2647
2648 fprintf( outfile, "\t.byte 0x64\n\taddw $%d,(%d)\n", size, STACKOFFSET );
2649
2650 /* Return argument size to caller */
2651 if ( isEx )
2652 {
2653 fprintf( outfile, "\tmovl 32(%%esp), %%ebx\n" );
2654 fprintf( outfile, "\tmovl %%ebp, (%%ebx)\n" );
2655 }
2656
2657 /* Restore registers and return */
2658
2659 fprintf( outfile, "\tpopl %%ebx\n" );
2660 fprintf( outfile, "\tpopl %%esi\n" );
2661 fprintf( outfile, "\tpopl %%edi\n" );
2662 fprintf( outfile, "\tpopl %%ebp\n" );
2663 fprintf( outfile, "\tret\n" );
2664 }
2665
2666 static void BuildCallTo32CBClientRet( FILE *outfile, BOOL isEx )
2667 {
2668 char *name = isEx? "CBClientEx" : "CBClient";
2669
2670 /* '16-bit' return stub */
2671
2672 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_Ret\n", name );
2673 fprintf( outfile, PREFIX "CALL32_%s_Ret:\n", name );
2674
2675 if ( !isEx )
2676 {
2677 fprintf( outfile, "\tmovzwl %%sp, %%ebx\n" );
2678 fprintf( outfile, "\tlssl %%ss:-16(%%ebx), %%esp\n" );
2679 }
2680 else
2681 {
2682 fprintf( outfile, "\tmovzwl %%bp, %%ebx\n" );
2683 fprintf( outfile, "\tsubw %%bp, %%sp\n" );
2684 fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" );
2685 fprintf( outfile, "\tlssl %%ss:-12(%%ebx), %%esp\n" );
2686 }
2687 fprintf( outfile, "\tlret\n" );
2688
2689 /* Declare the return address variable */
2690
2691 fprintf( outfile, "\n\t.globl " PREFIX "CALL32_%s_RetAddr\n", name );
2692 fprintf( outfile, PREFIX "CALL32_%s_RetAddr:\t.long 0\n", name );
2693 }
2694
2695
2696 /*******************************************************************
2697 * BuildCallTo32LargeStack
2698 *
2699 * Build the function used to switch to the original 32-bit stack
2700 * before calling a 32-bit function from 32-bit code. This is used for
2701 * functions that need a large stack, like X bitmaps functions.
2702 *
2703 * The generated function has the following prototype:
2704 * int xxx( int (*func)(), void *arg );
2705 *
2706 * The pointer to the function can be retrieved by calling CALL32_Init,
2707 * which also takes care of saving the current 32-bit stack pointer.
2708 * Furthermore, CALL32_Init switches to a new stack and jumps to the
2709 * specified target address.
2710 *
2711 * NOTE: The CALL32_LargeStack routine may be recursively entered by the
2712 * same thread, but not concurrently entered by several threads.
2713 *
2714 * Stack layout of CALL32_Init:
2715 *
2716 * (esp+12) new stack address
2717 * (esp+8) target address
2718 * (esp+4) pointer to variable to receive CALL32_LargeStack address
2719 * (esp) ret addr
2720 *
2721 * Stack layout of CALL32_LargeStack:
2722 * ... ...
2723 * (ebp+12) arg
2724 * (ebp+8) func
2725 * (ebp+4) ret addr
2726 * (ebp) ebp
2727 */
2728 static void BuildCallTo32LargeStack( FILE *outfile )
2729 {
2730 /* Initialization function */
2731
2732 fprintf( outfile, "\n\t.align 4\n" );
2733 #ifdef USE_STABS
2734 fprintf( outfile, ".stabs \"CALL32_Init:F1\",36,0,0," PREFIX "CALL32_Init\n");
2735 #endif
2736 fprintf( outfile, "\t.globl " PREFIX "CALL32_Init\n" );
2737 fprintf( outfile, "\t.type " PREFIX "CALL32_Init,@function\n" );
2738 fprintf( outfile, PREFIX "CALL32_Init:\n" );
2739 fprintf( outfile, "\tmovl %%esp,CALL32_Original32_esp\n" );
2740 fprintf( outfile, "\tpopl %%eax\n" );
2741 fprintf( outfile, "\tpopl %%eax\n" );
2742 fprintf( outfile, "\tmovl $CALL32_LargeStack,(%%eax)\n" );
2743 fprintf( outfile, "\tpopl %%eax\n" );
2744 fprintf( outfile, "\tpopl %%esp\n" );
2745 fprintf( outfile, "\tpushl %%eax\n" );
2746 fprintf( outfile, "\tret\n" );
2747
2748 /* Function header */
2749
2750 fprintf( outfile, "\n\t.align 4\n" );
2751 #ifdef USE_STABS
2752 fprintf( outfile, ".stabs \"CALL32_LargeStack:F1\",36,0,0,CALL32_LargeStack\n");
2753 #endif
2754 fprintf( outfile, "CALL32_LargeStack:\n" );
2755
2756 /* Entry code */
2757
2758 fprintf( outfile, "\tpushl %%ebp\n" );
2759 fprintf( outfile, "\tmovl %%esp,%%ebp\n" );
2760
2761 /* Switch to the original 32-bit stack pointer */
2762
2763 fprintf( outfile, "\tcmpl $0, CALL32_RecursionCount\n" );
2764 fprintf( outfile, "\tjne CALL32_skip\n" );
2765 fprintf( outfile, "\tmovl CALL32_Original32_esp, %%esp\n" );
2766 fprintf( outfile, "CALL32_skip:\n" );
2767
2768 fprintf( outfile, "\tincl CALL32_RecursionCount\n" );
2769
2770 /* Transfer the argument and call the function */
2771
2772 fprintf( outfile, "\tpushl 12(%%ebp)\n" );
2773 fprintf( outfile, "\tcall *8(%%ebp)\n" );
2774
2775 /* Restore registers and return */
2776
2777 fprintf( outfile, "\tdecl CALL32_RecursionCount\n" );
2778
2779 fprintf( outfile, "\tmovl %%ebp,%%esp\n" );
2780 fprintf( outfile, "\tpopl %%ebp\n" );
2781 fprintf( outfile, "\tret\n" );
2782
2783 /* Data */
2784
2785 fprintf( outfile, "\t.data\n" );
2786 fprintf( outfile, "CALL32_Original32_esp:\t.long 0\n" );
2787 fprintf( outfile, "CALL32_RecursionCount:\t.long 0\n" );
2788 fprintf( outfile, "\t.text\n" );
2789 }
2790
2791
2792 /*******************************************************************
2793 * BuildCallFrom32Regs
2794 *
2795 * Build a 32-bit-to-Wine call-back function for a 'register' function.
2796 * 'args' is the number of dword arguments.
2797 *
2798 * Stack layout:
2799 * ...
2800 * (ebp+12) first arg
2801 * (ebp+8) ret addr to user code
2802 * (ebp+4) ret addr to relay code
2803 * (ebp+0) saved ebp
2804 * (ebp-128) buffer area to allow stack frame manipulation
2805 * (ebp-332) CONTEXT86 struct
2806 * (ebp-336) CONTEXT86 *argument
2807 * .... other arguments copied from (ebp+12)
2808 *
2809 * The entry point routine is called with a CONTEXT* extra argument,
2810 * following the normal args. In this context structure, EIP_reg
2811 * contains the return address to user code, and ESP_reg the stack
2812 * pointer on return (with the return address and arguments already
2813 * removed).
2814 */
2815 static void BuildCallFrom32Regs( FILE *outfile )
2816 {
2817 static const int STACK_SPACE = 128 + sizeof(CONTEXT86);
2818
2819 /* Function header */
2820
2821 fprintf( outfile, "\n\t.align 4\n" );
2822 #ifdef USE_STABS
2823 fprintf( outfile, ".stabs \"CALL32_Regs:F1\",36,0,0," PREFIX "CALL32_Regs\n" );
2824 #endif
2825 fprintf( outfile, "\t.globl " PREFIX "CALL32_Regs\n" );
2826 fprintf( outfile, PREFIX "CALL32_Regs:\n" );
2827
2828 /* Allocate some buffer space on the stack */
2829
2830 fprintf( outfile, "\tpushl %%ebp\n" );
2831 fprintf( outfile, "\tmovl %%esp,%%ebp\n ");
2832 fprintf( outfile, "\tleal -%d(%%esp), %%esp\n", STACK_SPACE );
2833
2834 /* Build the context structure */
2835
2836 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2837 fprintf( outfile, "\tpushfl\n" );
2838 fprintf( outfile, "\tpopl %%eax\n" );
2839 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2840 fprintf( outfile, "\tmovl 0(%%ebp),%%eax\n" );
2841 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2842 fprintf( outfile, "\tmovl %%ebx,%d(%%ebp)\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2843 fprintf( outfile, "\tmovl %%ecx,%d(%%ebp)\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2844 fprintf( outfile, "\tmovl %%edx,%d(%%ebp)\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2845 fprintf( outfile, "\tmovl %%esi,%d(%%ebp)\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2846 fprintf( outfile, "\tmovl %%edi,%d(%%ebp)\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2847
2848 fprintf( outfile, "\txorl %%eax,%%eax\n" );
2849 fprintf( outfile, "\tmovw %%cs,%%ax\n" );
2850 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegCs) - STACK_SPACE );
2851 fprintf( outfile, "\tmovw %%es,%%ax\n" );
2852 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2853 fprintf( outfile, "\tmovw %%fs,%%ax\n" );
2854 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2855 fprintf( outfile, "\tmovw %%gs,%%ax\n" );
2856 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2857 fprintf( outfile, "\tmovw %%ss,%%ax\n" );
2858 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegSs) - STACK_SPACE );
2859 fprintf( outfile, "\tmovw %%ds,%%ax\n" );
2860 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegDs) - STACK_SPACE );
2861 fprintf( outfile, "\tmovw %%ax,%%es\n" ); /* set %es equal to %ds just in case */
2862
2863 fprintf( outfile, "\tmovl $0x%x,%%eax\n", CONTEXT86_FULL );
2864 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(ContextFlags) - STACK_SPACE );
2865
2866 fprintf( outfile, "\tmovl 8(%%ebp),%%eax\n" ); /* Get %eip at time of call */
2867 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2868
2869 /* Transfer the arguments */
2870
2871 fprintf( outfile, "\tmovl 4(%%ebp),%%ebx\n" ); /* get relay code addr */
2872 fprintf( outfile, "\tpushl %%esp\n" ); /* push ptr to context struct */
2873 fprintf( outfile, "\tmovzbl 4(%%ebx),%%ecx\n" ); /* fetch number of args to copy */
2874 fprintf( outfile, "\tjecxz 1f\n" );
2875 fprintf( outfile, "\tsubl %%ecx,%%esp\n" );
2876 fprintf( outfile, "\tleal 12(%%ebp),%%esi\n" ); /* get %esp at time of call */
2877 fprintf( outfile, "\tmovl %%esp,%%edi\n" );
2878 fprintf( outfile, "\tshrl $2,%%ecx\n" );
2879 fprintf( outfile, "\tcld\n" );
2880 fprintf( outfile, "\trep\n\tmovsl\n" ); /* copy args */
2881
2882 fprintf( outfile, "1:\tmovzbl 5(%%ebx),%%eax\n" ); /* fetch number of args to remove */
2883 fprintf( outfile, "\tleal 12(%%ebp,%%eax),%%eax\n" );
2884 fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2885
2886 /* Call the entry point */
2887
2888 fprintf( outfile, "\tcall *0(%%ebx)\n" );
2889
2890 /* Store %eip and %ebp onto the new stack */
2891
2892 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2893 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eip) - STACK_SPACE );
2894 fprintf( outfile, "\tmovl %%eax,-4(%%edx)\n" );
2895 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Ebp) - STACK_SPACE );
2896 fprintf( outfile, "\tmovl %%eax,-8(%%edx)\n" );
2897
2898 /* Restore the context structure */
2899
2900 /* Note: we don't bother to restore %cs, %ds and %ss
2901 * changing them in 32-bit code is a recipe for disaster anyway
2902 */
2903 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegEs) - STACK_SPACE );
2904 fprintf( outfile, "\tmovw %%ax,%%es\n" );
2905 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegFs) - STACK_SPACE );
2906 fprintf( outfile, "\tmovw %%ax,%%fs\n" );
2907 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegGs) - STACK_SPACE );
2908 fprintf( outfile, "\tmovw %%ax,%%gs\n" );
2909
2910 fprintf( outfile, "\tmovl %d(%%ebp),%%edi\n", CONTEXTOFFSET(Edi) - STACK_SPACE );
2911 fprintf( outfile, "\tmovl %d(%%ebp),%%esi\n", CONTEXTOFFSET(Esi) - STACK_SPACE );
2912 fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Edx) - STACK_SPACE );
2913 fprintf( outfile, "\tmovl %d(%%ebp),%%ecx\n", CONTEXTOFFSET(Ecx) - STACK_SPACE );
2914 fprintf( outfile, "\tmovl %d(%%ebp),%%ebx\n", CONTEXTOFFSET(Ebx) - STACK_SPACE );
2915
2916 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(EFlags) - STACK_SPACE );
2917 fprintf( outfile, "\tpushl %%eax\n" );
2918 fprintf( outfile, "\tpopfl\n" );
2919 fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eax) - STACK_SPACE );
2920
2921 fprintf( outfile, "\tmovl %d(%%ebp),%%ebp\n", CONTEXTOFFSET(Esp) - STACK_SPACE );
2922 fprintf( outfile, "\tleal -8(%%ebp),%%esp\n" );
2923 fprintf( outfile, "\tpopl %%ebp\n" );
2924 fprintf( outfile, "\tret\n" );
2925 }
2926
2927
2928 /*******************************************************************
2929 * BuildSpec
2930 *
2931 * Build the spec files
2932 */
2933 static int BuildSpec( FILE *outfile, int argc, char *argv[] )
2934 {
2935 int i;
2936 for (i = 2; i < argc; i++)
2937 if (BuildSpecFile( outfile, argv[i] ) < 0) return -1;
2938 return 0;
2939 }
2940
2941 /*******************************************************************
2942 * BuildGlue
2943 *
2944 * Build the 16-bit-to-Wine/Wine-to-16-bit callback glue code
2945 */
2946 static int BuildGlue( FILE *outfile, char * outname, int argc, char *argv[] )
2947 {
2948 char buffer[1024];
2949 FILE *infile;
2950
2951 if (argc > 2)
2952 {
2953 infile = fopen( argv[2], "r" );
2954 if (!infile)
2955 {
2956 perror( argv[2] );
2957 exit( 1 );
2958 }
2959 }
2960 else infile = stdin;
2961
2962 /* File header */
2963
2964 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
2965 fprintf( outfile, "\t.text\n" );
2966
2967 #ifdef __i386__
2968
2969 #ifdef USE_STABS
2970 fprintf( outfile, "\t.file\t\"%s\"\n", outname );
2971 getcwd(buffer, sizeof(buffer));
2972
2973 /*
2974 * The stabs help the internal debugger as they are an indication that it
2975 * is sensible to step into a thunk/trampoline.
2976 */
2977 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
2978 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname);
2979 fprintf( outfile, "\t.text\n" );
2980 fprintf( outfile, "\t.align 4\n" );
2981 fprintf( outfile, "Code_Start:\n\n" );
2982 #endif
2983
2984 /* Build the callback glue functions */
2985
2986 while (fgets( buffer, sizeof(buffer), infile ))
2987 {
2988 if (strstr( buffer, "### start build ###" )) break;
2989 }
2990 while (fgets( buffer, sizeof(buffer), infile ))
2991 {
2992 char *p;
2993 if ( (p = strstr( buffer, "CallFrom16_" )) != NULL )
2994 {
2995 char *q, *profile = p + strlen( "CallFrom16_" );
2996 for (q = profile; (*q == '_') || isalpha(*q); q++ )
2997 ;
2998 *q = '\0';
2999 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
3000 ;
3001 if ( ++q < p ) p[-1] = '\0'; else q = "";
3002 BuildCallFrom16Func( outfile, profile, q );
3003 }
3004 if ( (p = strstr( buffer, "CallTo16_" )) != NULL )
3005 {
3006 char *q, *profile = p + strlen( "CallTo16_" );
3007 for (q = profile; (*q == '_') || isalpha(*q); q++ )
3008 ;
3009 *q = '\0';
3010 for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- )
3011 ;
3012 if ( ++q < p ) p[-1] = '\0'; else q = "";
3013 BuildCallTo16Func( outfile, profile, q );
3014 }
3015 if (strstr( buffer, "### stop build ###" )) break;
3016 }
3017
3018
3019 #ifdef USE_STABS
3020 fprintf( outfile, "\t.text\n");
3021 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3022 fprintf( outfile, ".Letext:\n");
3023 #endif
3024
3025 #else /* __i386__ */
3026
3027 /* Just to avoid an empty file */
3028 fprintf( outfile, "\t.long 0\n" );
3029
3030 #endif /* __i386__ */
3031
3032 fclose( infile );
3033 return 0;
3034 }
3035
3036 /*******************************************************************
3037 * BuildCall16
3038 *
3039 * Build the 16-bit callbacks
3040 */
3041 static int BuildCall16( FILE *outfile, char * outname )
3042 {
3043 #ifdef USE_STABS
3044 char buffer[1024];
3045 #endif
3046
3047 /* File header */
3048
3049 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
3050 fprintf( outfile, "\t.text\n" );
3051
3052 #ifdef __i386__
3053
3054 #ifdef USE_STABS
3055 fprintf( outfile, "\t.file\t\"%s\"\n", outname );
3056 getcwd(buffer, sizeof(buffer));
3057
3058 /*
3059 * The stabs help the internal debugger as they are an indication that it
3060 * is sensible to step into a thunk/trampoline.
3061 */
3062 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
3063 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname);
3064 fprintf( outfile, "\t.text\n" );
3065 fprintf( outfile, "\t.align 4\n" );
3066 fprintf( outfile, "Code_Start:\n\n" );
3067 #endif
3068 fprintf( outfile, PREFIX"Call16_Start:\n" );
3069 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
3070 fprintf( outfile, "\t.byte 0\n\n" );
3071
3072
3073 /* Standard CallFrom16 routine */
3074 BuildCallFrom16Core( outfile, FALSE, FALSE );
3075
3076 /* Register CallFrom16 routine */
3077 BuildCallFrom16Core( outfile, TRUE, FALSE );
3078
3079 /* C16ThkSL CallFrom16 routine */
3080 BuildCallFrom16Core( outfile, FALSE, TRUE );
3081
3082 /* Standard CallTo16 routine (WORD return) */
3083 BuildCallTo16Core( outfile, TRUE, FALSE );
3084
3085 /* Standard CallTo16 routine (DWORD return) */
3086 BuildCallTo16Core( outfile, FALSE, FALSE );
3087
3088 /* Register CallTo16 routine (16:16 retf) */
3089 BuildCallTo16Core( outfile, FALSE, 1 );
3090
3091 /* Register CallTo16 routine (16:32 retf) */
3092 BuildCallTo16Core( outfile, FALSE, 2 );
3093
3094 /* CBClientThunkSL routine */
3095 BuildCallTo32CBClient( outfile, FALSE );
3096
3097 /* CBClientThunkSLEx routine */
3098 BuildCallTo32CBClient( outfile, TRUE );
3099
3100 fprintf( outfile, PREFIX"Call16_End:\n" );
3101 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
3102
3103 #ifdef USE_STABS
3104 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3105 fprintf( outfile, ".Letext:\n");
3106 #endif
3107
3108 /* The whole Call16_Ret segment must lie within the .data section */
3109 fprintf( outfile, "\n\t.data\n" );
3110 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
3111 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
3112
3113 /* Standard CallTo16 return stub */
3114 BuildRet16Func( outfile );
3115
3116 /* CBClientThunkSL return stub */
3117 BuildCallTo32CBClientRet( outfile, FALSE );
3118
3119 /* CBClientThunkSLEx return stub */
3120 BuildCallTo32CBClientRet( outfile, TRUE );
3121
3122 /* End of Call16_Ret segment */
3123 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3124 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3125
3126 #else /* __i386__ */
3127
3128 fprintf( outfile, PREFIX"Call16_Start:\n" );
3129 fprintf( outfile, "\t.globl "PREFIX"Call16_Start\n" );
3130 fprintf( outfile, "\t.byte 0\n\n" );
3131 fprintf( outfile, PREFIX"Call16_End:\n" );
3132 fprintf( outfile, "\t.globl "PREFIX"Call16_End\n" );
3133
3134 fprintf( outfile, "\t.globl " PREFIX "Call16_Ret_Start\n" );
3135 fprintf( outfile, PREFIX "Call16_Ret_Start:\n" );
3136 fprintf( outfile, "\t.byte 0\n\n" );
3137 fprintf( outfile, "\n\t.globl " PREFIX "Call16_Ret_End\n" );
3138 fprintf( outfile, PREFIX "Call16_Ret_End:\n" );
3139
3140 #endif /* __i386__ */
3141
3142 return 0;
3143 }
3144
3145 /*******************************************************************
3146 * BuildCall32
3147 *
3148 * Build the 32-bit callbacks
3149 */
3150 static int BuildCall32( FILE *outfile, char * outname )
3151 {
3152 #ifdef USE_STABS
3153 char buffer[1024];
3154 #endif
3155
3156 /* File header */
3157
3158 fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" );
3159 fprintf( outfile, "\t.text\n" );
3160
3161 #ifdef __i386__
3162
3163 #ifdef USE_STABS
3164 fprintf( outfile, "\t.file\t\"%s\"\n", outname );
3165 getcwd(buffer, sizeof(buffer));
3166
3167 /*
3168 * The stabs help the internal debugger as they are an indication that it
3169 * is sensible to step into a thunk/trampoline.
3170 */
3171 fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer);
3172 fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname);
3173 fprintf( outfile, "\t.text\n" );
3174 fprintf( outfile, "\t.align 4\n" );
3175 fprintf( outfile, "Code_Start:\n" );
3176 #endif
3177
3178 /* Build the 32-bit large stack callback */
3179
3180 BuildCallTo32LargeStack( outfile );
3181
3182 /* Build the register callback function */
3183
3184 BuildCallFrom32Regs( outfile );
3185
3186 #ifdef USE_STABS
3187 fprintf( outfile, "\t.text\n");
3188 fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n");
3189 fprintf( outfile, ".Letext:\n");
3190 #endif
3191
3192 #else /* __i386__ */
3193
3194 /* Just to avoid an empty file */
3195 fprintf( outfile, "\t.long 0\n" );
3196
3197 #endif /* __i386__ */
3198 return 0;
3199 }
3200
3201
3202 /*******************************************************************
3203 * usage
3204 */
3205 static void usage(void)
3206 {
3207 fprintf( stderr,
3208 "usage: build [-pic] [-o outfile] -spec SPECNAMES\n"
3209 " build [-pic] [-o outfile] -glue SOURCE_FILE\n"
3210 " build [-pic] [-o outfile] -call16\n"
3211 " build [-pic] [-o outfile] -call32\n" );
3212 exit(1);
3213 }
3214
3215
3216 /*******************************************************************
3217 * main
3218 */
3219 int main(int argc, char **argv)
3220 {
3221 char *outname = NULL;
3222 FILE *outfile = stdout;
3223 int res = -1;
3224
3225 if (argc < 2) usage();
3226
3227 if (!strcmp( argv[1], "-pic" ))
3228 {
3229 UsePIC = 1;
3230 argv += 1;
3231 argc -= 1;
3232 if (argc < 2) usage();
3233 }
3234
3235 if (!strcmp( argv[1], "-o" ))
3236 {
3237 outname = argv[2];
3238 argv += 2;
3239 argc -= 2;
3240 if (argc < 2) usage();
3241 if (!(outfile = fopen( outname, "w" )))
3242 {
3243 fprintf( stderr, "Unable to create output file '%s'\n", outname );
3244 exit(1);
3245 }
3246 }
3247
3248 /* Retrieve the selector values; this assumes that we are building
3249 * the asm files on the platform that will also run them. Probably
3250 * a safe assumption to make.
3251 */
3252 GET_CS( Code_Selector );
3253 GET_DS( Data_Selector );
3254
3255 if (!strcmp( argv[1], "-spec" ))
3256 res = BuildSpec( outfile, argc, argv );
3257 else if (!strcmp( argv[1], "-glue" ))
3258 res = BuildGlue( outfile, outname, argc, argv );
3259 else if (!strcmp( argv[1], "-call16" ))
3260 res = BuildCall16( outfile, outname );
3261 else if (!strcmp( argv[1], "-call32" ))
3262 res = BuildCall32( outfile, outname );
3263 else
3264 {
3265 fclose( outfile );
3266 unlink( outname );
3267 usage();
3268 }
3269
3270 fclose( outfile );
3271 if (res < 0)
3272 {
3273 unlink( outname );
3274 return 1;
3275 }
3276 return 0;
3277 }
Windows API implementation