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
20 #include "selectors.h"
21 #include "stackframe.h"
22 #include "builtin16.h"
25 #ifdef NEED_UNDERSCORE_PREFIX
31 #ifdef HAVE_ASM_STRING
32 # define STRING ".string"
34 # define STRING ".ascii"
37 #if defined(__GNUC__) && !defined(__svr4__)
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_INTERRUPT
, /* interrupt handler function (Win16) */
54 TYPE_STUB
, /* unimplemented stub */
55 TYPE_STDCALL
, /* stdcall function (Win32) */
56 TYPE_CDECL
, /* cdecl function (Win32) */
57 TYPE_VARARGS
, /* varargs function (Win32) */
58 TYPE_EXTERN
, /* external symbol (Win32) */
59 TYPE_FORWARD
, /* forwarded function (Win32) */
63 static const char * const TypeNames
[TYPE_NBTYPES
] =
66 "byte", /* TYPE_BYTE */
67 "word", /* TYPE_WORD */
68 "long", /* TYPE_LONG */
69 "pascal16", /* TYPE_PASCAL_16 */
70 "pascal", /* TYPE_PASCAL */
71 "equate", /* TYPE_ABS */
72 "register", /* TYPE_REGISTER */
73 "interrupt", /* TYPE_INTERRUPT */
74 "stub", /* TYPE_STUB */
75 "stdcall", /* TYPE_STDCALL */
76 "cdecl", /* TYPE_CDECL */
77 "varargs", /* TYPE_VARARGS */
78 "extern", /* TYPE_EXTERN */
79 "forward" /* TYPE_FORWARD */
82 #define MAX_ORDINALS 2048
83 #define MAX_IMPORTS 16
85 /* Callback function used for stub functions */
86 #define STUB_CALLBACK \
87 ((SpecType == SPEC_WIN16) ? "RELAY_Unimplemented16": "RELAY_Unimplemented32")
147 static ORDDEF OrdinalDefinitions
[MAX_ORDINALS
];
149 static SPEC_TYPE SpecType
= SPEC_INVALID
;
150 static char DLLName
[80];
151 static char DLLFileName
[80];
152 static int Limit
= 0;
153 static int Base
= MAX_ORDINALS
;
154 static int DLLHeapSize
= 0;
155 static char *SpecName
;
157 static WORD Code_Selector
, Data_Selector
;
158 static char DLLInitFunc
[80];
159 static char *DLLImports
[MAX_IMPORTS
];
160 static int nb_imports
= 0;
162 char *ParseBuffer
= NULL
;
167 static int UsePIC
= 0;
169 static int debugging
= 1;
171 /* Offset of a structure field relative to the start of the struct */
172 #define STRUCTOFFSET(type,field) ((int)&((type *)0)->field)
174 /* Offset of register relative to the start of the CONTEXT struct */
175 #define CONTEXTOFFSET(reg) STRUCTOFFSET(CONTEXT86,reg)
177 /* Offset of register relative to the start of the STACK16FRAME struct */
178 #define STACK16OFFSET(reg) STRUCTOFFSET(STACK16FRAME,reg)
180 /* Offset of register relative to the start of the STACK32FRAME struct */
181 #define STACK32OFFSET(reg) STRUCTOFFSET(STACK32FRAME,reg)
183 /* Offset of the stack pointer relative to %fs:(0) */
184 #define STACKOFFSET (STRUCTOFFSET(TEB,cur_stack))
186 static void BuildCallFrom16Func( FILE *outfile
, char *profile
, char *prefix
, int local
);
188 static void *xmalloc (size_t size
)
192 res
= malloc (size
? size
: 1);
195 fprintf (stderr
, "Virtual memory exhausted.\n");
202 static void *xrealloc (void *ptr
, size_t size
)
204 void *res
= realloc (ptr
, size
);
207 fprintf (stderr
, "Virtual memory exhausted.\n");
213 static char *xstrdup( const char *str
)
215 char *res
= strdup( str
);
218 fprintf (stderr
, "Virtual memory exhausted.\n");
224 static int IsNumberString(char *s
)
233 static char *strupper(char *s
)
237 for(p
= s
; *p
!= '\0'; p
++)
243 static char * GetTokenInLine(void)
248 if (ParseNext
!= ParseBuffer
)
250 if (ParseSaveChar
== '\0')
252 *ParseNext
= ParseSaveChar
;
256 * Remove initial white space.
258 for (p
= ParseNext
; isspace(*p
); p
++)
261 if ((*p
== '\0') || (*p
== '#'))
268 if (*token
!= '(' && *token
!= ')')
269 while (*p
!= '\0' && *p
!= '(' && *p
!= ')' && !isspace(*p
))
279 static char * GetToken(void)
283 if (ParseBuffer
== NULL
)
285 ParseBuffer
= xmalloc(512);
286 ParseNext
= ParseBuffer
;
290 if (fgets(ParseBuffer
, 511, SpecFp
) == NULL
)
292 if (ParseBuffer
[0] != '#')
297 while ((token
= GetTokenInLine()) == NULL
)
299 ParseNext
= ParseBuffer
;
303 if (fgets(ParseBuffer
, 511, SpecFp
) == NULL
)
305 if (ParseBuffer
[0] != '#')
314 /*******************************************************************
317 * Parse a variable definition.
319 static int ParseVariable( ORDDEF
*odp
)
324 int value_array_size
;
326 char *token
= GetToken();
329 fprintf(stderr
, "%s:%d: Expected '(' got '%s'\n",
330 SpecName
, Line
, token
);
335 value_array_size
= 25;
336 value_array
= xmalloc(sizeof(*value_array
) * value_array_size
);
338 while ((token
= GetToken()) != NULL
)
343 value_array
[n_values
++] = strtol(token
, &endptr
, 0);
344 if (n_values
== value_array_size
)
346 value_array_size
+= 25;
347 value_array
= xrealloc(value_array
,
348 sizeof(*value_array
) * value_array_size
);
351 if (endptr
== NULL
|| *endptr
!= '\0')
353 fprintf(stderr
, "%s:%d: Expected number value, got '%s'\n",
354 SpecName
, Line
, token
);
361 fprintf(stderr
, "%s:%d: End of file in variable declaration\n",
366 odp
->u
.var
.n_values
= n_values
;
367 odp
->u
.var
.values
= xrealloc(value_array
, sizeof(*value_array
) * n_values
);
373 /*******************************************************************
374 * ParseExportFunction
376 * Parse a function definition.
378 static int ParseExportFunction( ORDDEF
*odp
)
386 if (odp
->type
== TYPE_STDCALL
)
388 fprintf( stderr
, "%s:%d: 'stdcall' not supported for Win16\n",
392 else if (odp
->type
== TYPE_VARARGS
)
394 fprintf( stderr
, "%s:%d: 'varargs' not supported for Win16\n",
400 if ((odp
->type
== TYPE_PASCAL
) || (odp
->type
== TYPE_PASCAL_16
))
402 fprintf( stderr
, "%s:%d: 'pascal' not supported for Win32\n",
414 fprintf(stderr
, "%s:%d: Expected '(' got '%s'\n",
415 SpecName
, Line
, token
);
419 for (i
= 0; i
< sizeof(odp
->u
.func
.arg_types
)-1; i
++)
425 if (!strcmp(token
, "word"))
426 odp
->u
.func
.arg_types
[i
] = 'w';
427 else if (!strcmp(token
, "s_word"))
428 odp
->u
.func
.arg_types
[i
] = 's';
429 else if (!strcmp(token
, "long") || !strcmp(token
, "segptr"))
430 odp
->u
.func
.arg_types
[i
] = 'l';
431 else if (!strcmp(token
, "ptr"))
432 odp
->u
.func
.arg_types
[i
] = 'p';
433 else if (!strcmp(token
, "str"))
434 odp
->u
.func
.arg_types
[i
] = 't';
435 else if (!strcmp(token
, "wstr"))
436 odp
->u
.func
.arg_types
[i
] = 'W';
437 else if (!strcmp(token
, "segstr"))
438 odp
->u
.func
.arg_types
[i
] = 'T';
439 else if (!strcmp(token
, "double"))
441 odp
->u
.func
.arg_types
[i
++] = 'l';
442 odp
->u
.func
.arg_types
[i
] = 'l';
446 fprintf(stderr
, "%s:%d: Unknown variable type '%s'\n",
447 SpecName
, Line
, token
);
450 if (SpecType
== SPEC_WIN32
)
452 if (strcmp(token
, "long") &&
453 strcmp(token
, "ptr") &&
454 strcmp(token
, "str") &&
455 strcmp(token
, "wstr") &&
456 strcmp(token
, "double"))
458 fprintf( stderr
, "%s:%d: Type '%s' not supported for Win32\n",
459 SpecName
, Line
, token
);
464 if ((*token
!= ')') || (i
>= sizeof(odp
->u
.func
.arg_types
)))
466 fprintf( stderr
, "%s:%d: Too many arguments\n", SpecName
, Line
);
469 odp
->u
.func
.arg_types
[i
] = '\0';
470 if ((odp
->type
== TYPE_STDCALL
) && !i
)
471 odp
->type
= TYPE_CDECL
; /* stdcall is the same as cdecl for 0 args */
472 strcpy(odp
->u
.func
.link_name
, GetToken());
477 /*******************************************************************
480 * Parse an 'equate' definition.
482 static int ParseEquate( ORDDEF
*odp
)
486 char *token
= GetToken();
487 int value
= strtol(token
, &endptr
, 0);
488 if (endptr
== NULL
|| *endptr
!= '\0')
490 fprintf(stderr
, "%s:%d: Expected number value, got '%s'\n",
491 SpecName
, Line
, token
);
495 if (SpecType
== SPEC_WIN32
)
497 fprintf( stderr
, "%s:%d: 'equate' not supported for Win32\n",
502 odp
->u
.abs
.value
= value
;
507 /*******************************************************************
510 * Parse a 'stub' definition.
512 static int ParseStub( ORDDEF
*odp
)
514 odp
->u
.func
.arg_types
[0] = '\0';
515 strcpy( odp
->u
.func
.link_name
, STUB_CALLBACK
);
520 /*******************************************************************
523 * Parse an 'interrupt' definition.
525 static int ParseInterrupt( ORDDEF
*odp
)
529 if (SpecType
== SPEC_WIN32
)
531 fprintf( stderr
, "%s:%d: 'interrupt' not supported for Win32\n",
539 fprintf(stderr
, "%s:%d: Expected '(' got '%s'\n",
540 SpecName
, Line
, token
);
546 fprintf(stderr
, "%s:%d: Expected ')' got '%s'\n",
547 SpecName
, Line
, token
);
551 odp
->u
.func
.arg_types
[0] = '\0';
552 strcpy( odp
->u
.func
.link_name
, GetToken() );
557 /*******************************************************************
560 * Parse an 'extern' definition.
562 static int ParseExtern( ORDDEF
*odp
)
564 if (SpecType
== SPEC_WIN16
)
566 fprintf( stderr
, "%s:%d: 'extern' not supported for Win16\n",
570 strcpy( odp
->u
.ext
.link_name
, GetToken() );
575 /*******************************************************************
578 * Parse a 'forward' definition.
580 static int ParseForward( ORDDEF
*odp
)
582 if (SpecType
== SPEC_WIN16
)
584 fprintf( stderr
, "%s:%d: 'forward' not supported for Win16\n",
588 strcpy( odp
->u
.fwd
.link_name
, GetToken() );
593 /*******************************************************************
596 * Parse an ordinal definition.
598 static int ParseOrdinal(int ordinal
)
603 if (ordinal
>= MAX_ORDINALS
)
605 fprintf(stderr
, "%s:%d: Ordinal number too large\n", SpecName
, Line
);
608 if (ordinal
> Limit
) Limit
= ordinal
;
609 if (ordinal
< Base
) Base
= ordinal
;
611 odp
= &OrdinalDefinitions
[ordinal
];
612 if (!(token
= GetToken()))
614 fprintf(stderr
, "%s:%d: Expected type after ordinal\n", SpecName
, Line
);
618 for (odp
->type
= 0; odp
->type
< TYPE_NBTYPES
; odp
->type
++)
619 if (TypeNames
[odp
->type
] && !strcmp( token
, TypeNames
[odp
->type
] ))
622 if (odp
->type
>= TYPE_NBTYPES
)
625 "%s:%d: Expected type after ordinal, found '%s' instead\n",
626 SpecName
, Line
, token
);
630 if (!(token
= GetToken()))
632 fprintf( stderr
, "%s:%d: Expected name after type\n", SpecName
, Line
);
635 strcpy( odp
->name
, token
);
643 return ParseVariable( odp
);
650 return ParseExportFunction( odp
);
652 return ParseInterrupt( odp
);
654 return ParseEquate( odp
);
656 return ParseStub( odp
);
658 return ParseExtern( odp
);
660 return ParseForward( odp
);
662 fprintf( stderr
, "Should not happen\n" );
668 /*******************************************************************
673 static int ParseTopLevel(void)
677 while ((token
= GetToken()) != NULL
)
679 if (strcmp(token
, "name") == 0)
681 strcpy(DLLName
, GetToken());
683 if (!DLLFileName
[0]) sprintf( DLLFileName
, "%s.DLL", DLLName
);
685 else if (strcmp(token
, "file") == 0)
687 strcpy(DLLFileName
, GetToken());
688 strupper(DLLFileName
);
690 else if (strcmp(token
, "type") == 0)
693 if (!strcmp(token
, "win16" )) SpecType
= SPEC_WIN16
;
694 else if (!strcmp(token
, "win32" )) SpecType
= SPEC_WIN32
;
697 fprintf(stderr
, "%s:%d: Type must be 'win16' or 'win32'\n",
702 else if (strcmp(token
, "heap") == 0)
705 if (!IsNumberString(token
))
707 fprintf(stderr
, "%s:%d: Expected number after heap\n",
711 DLLHeapSize
= atoi(token
);
713 else if (strcmp(token
, "init") == 0)
715 strcpy(DLLInitFunc
, GetToken());
716 if (SpecType
== SPEC_WIN16
)
718 fprintf(stderr
, "%s:%d: init cannot be used for Win16 spec files\n",
724 fprintf(stderr
, "%s:%d: Expected function name after init\n", SpecName
, Line
);
728 else if (strcmp(token
, "import") == 0)
730 if (nb_imports
>= MAX_IMPORTS
)
732 fprintf( stderr
, "%s:%d: Too many imports (limit %d)\n",
733 SpecName
, Line
, MAX_IMPORTS
);
736 if (SpecType
!= SPEC_WIN32
)
738 fprintf( stderr
, "%s:%d: Imports not supported for Win16\n", SpecName
, Line
);
741 DLLImports
[nb_imports
++] = xstrdup(GetToken());
743 else if (IsNumberString(token
))
748 ordinal
= atoi(token
);
749 if ((rv
= ParseOrdinal(ordinal
)) < 0)
755 "%s:%d: Expected name, id, length or ordinal\n",
765 /*******************************************************************
768 * Store a list of ints into a byte array.
770 static int StoreVariableCode( unsigned char *buffer
, int size
, ORDDEF
*odp
)
777 for (i
= 0; i
< odp
->u
.var
.n_values
; i
++)
778 buffer
[i
] = odp
->u
.var
.values
[i
];
781 for (i
= 0; i
< odp
->u
.var
.n_values
; i
++)
782 ((unsigned short *)buffer
)[i
] = odp
->u
.var
.values
[i
];
785 for (i
= 0; i
< odp
->u
.var
.n_values
; i
++)
786 ((unsigned int *)buffer
)[i
] = odp
->u
.var
.values
[i
];
789 return odp
->u
.var
.n_values
* size
;
793 /*******************************************************************
796 * Dump a byte stream into the assembly code.
798 static void DumpBytes( FILE *outfile
, const unsigned char *data
, int len
,
803 fprintf( outfile
, "\nstatic BYTE %s[] = \n{", label
);
805 for (i
= 0; i
< len
; i
++)
807 if (!(i
& 0x0f)) fprintf( outfile
, "\n " );
808 fprintf( outfile
, "%d", *data
++ );
809 if (i
< len
- 1) fprintf( outfile
, ", " );
811 fprintf( outfile
, "\n};\n" );
815 /*******************************************************************
818 * Build the in-memory representation of a 16-bit NE module, and dump it
819 * as a byte stream into the assembly code.
821 static int BuildModule16( FILE *outfile
, int max_code_offset
,
822 int max_data_offset
)
828 SEGTABLEENTRY
*pSegment
;
832 ET_BUNDLE
*bundle
= 0;
837 * OFSTRUCT File information
838 * SEGTABLEENTRY Segment 1 (code)
839 * SEGTABLEENTRY Segment 2 (data)
840 * WORD[2] Resource table (empty)
841 * BYTE[2] Imported names (empty)
842 * BYTE[n] Resident names table
843 * BYTE[n] Entry table
846 buffer
= xmalloc( 0x10000 );
848 pModule
= (NE_MODULE
*)buffer
;
849 memset( pModule
, 0, sizeof(*pModule
) );
850 pModule
->magic
= IMAGE_OS2_SIGNATURE
;
853 pModule
->flags
= NE_FFLAGS_SINGLEDATA
| NE_FFLAGS_BUILTIN
| NE_FFLAGS_LIBMODULE
;
855 pModule
->heap_size
= DLLHeapSize
;
856 pModule
->stack_size
= 0;
861 pModule
->seg_count
= 2;
862 pModule
->modref_count
= 0;
863 pModule
->nrname_size
= 0;
864 pModule
->modref_table
= 0;
865 pModule
->nrname_fpos
= 0;
866 pModule
->moveable_entries
= 0;
867 pModule
->alignment
= 0;
868 pModule
->truetype
= 0;
869 pModule
->os_flags
= NE_OSFLAGS_WINDOWS
;
870 pModule
->misc_flags
= 0;
871 pModule
->dlls_to_init
= 0;
872 pModule
->nrname_handle
= 0;
873 pModule
->min_swap_area
= 0;
874 pModule
->expected_version
= 0x030a;
875 pModule
->module32
= 0;
877 pModule
->self_loading_sel
= 0;
879 /* File information */
881 pFileInfo
= (OFSTRUCT
*)(pModule
+ 1);
882 pModule
->fileinfo
= (int)pFileInfo
- (int)pModule
;
883 memset( pFileInfo
, 0, sizeof(*pFileInfo
) - sizeof(pFileInfo
->szPathName
) );
884 pFileInfo
->cBytes
= sizeof(*pFileInfo
) - sizeof(pFileInfo
->szPathName
)
885 + strlen(DLLFileName
);
886 strcpy( pFileInfo
->szPathName
, DLLFileName
);
887 pstr
= (char *)pFileInfo
+ pFileInfo
->cBytes
+ 1;
889 #ifdef __i386__ /* FIXME: Alignment problems! */
893 pSegment
= (SEGTABLEENTRY
*)pstr
;
894 pModule
->seg_table
= (int)pSegment
- (int)pModule
;
895 pSegment
->filepos
= 0;
896 pSegment
->size
= max_code_offset
;
898 pSegment
->minsize
= max_code_offset
;
902 pModule
->dgroup_entry
= (int)pSegment
- (int)pModule
;
903 pSegment
->filepos
= 0;
904 pSegment
->size
= max_data_offset
;
905 pSegment
->flags
= NE_SEGFLAGS_DATA
;
906 pSegment
->minsize
= max_data_offset
;
912 pword
= (WORD
*)pSegment
;
913 pModule
->res_table
= (int)pword
- (int)pModule
;
917 /* Imported names table */
919 pstr
= (char *)pword
;
920 pModule
->import_table
= (int)pstr
- (int)pModule
;
924 /* Resident names table */
926 pModule
->name_table
= (int)pstr
- (int)pModule
;
927 /* First entry is module name */
928 *pstr
= strlen(DLLName
);
929 strcpy( pstr
+ 1, DLLName
);
932 pstr
+= sizeof(WORD
);
933 /* Store all ordinals */
934 odp
= OrdinalDefinitions
+ 1;
935 for (i
= 1; i
<= Limit
; i
++, odp
++)
937 if (!odp
->name
[0]) continue;
938 *pstr
= strlen( odp
->name
);
939 strcpy( pstr
+ 1, odp
->name
);
940 strupper( pstr
+ 1 );
943 pstr
+= sizeof(WORD
);
949 pModule
->entry_table
= (int)pstr
- (int)pModule
;
950 odp
= OrdinalDefinitions
+ 1;
951 for (i
= 1; i
<= Limit
; i
++, odp
++)
963 selector
= 1; /* Code selector */
969 selector
= 2; /* Data selector */
973 selector
= 0xfe; /* Constant selector */
977 selector
= 0; /* Invalid selector */
984 if ( bundle
&& bundle
->last
+1 == i
)
989 bundle
->next
= (char *)pstr
- (char *)pModule
;
991 bundle
= (ET_BUNDLE
*)pstr
;
995 pstr
+= sizeof(ET_BUNDLE
);
998 /* FIXME: is this really correct ?? */
999 entry
= (ET_ENTRY
*)pstr
;
1000 entry
->type
= 0xff; /* movable */
1001 entry
->flags
= 3; /* exported & public data */
1002 entry
->segnum
= selector
;
1003 entry
->offs
= odp
->offset
;
1004 pstr
+= sizeof(ET_ENTRY
);
1009 /* Dump the module content */
1011 DumpBytes( outfile
, (char *)pModule
, (int)pstr
- (int)pModule
,
1013 return (int)pstr
- (int)pModule
;
1017 /*******************************************************************
1020 * Build a Win32 C file from a spec file.
1022 static int BuildSpec32File( char * specfile
, FILE *outfile
)
1025 int i
, nb_names
, fwd_size
= 0;
1027 fprintf( outfile
, "/* File generated automatically from %s; do not edit! */\n\n",
1029 fprintf( outfile
, "#include \"builtin32.h\"\n\n" );
1031 /* Output code for all stubs functions */
1033 fprintf( outfile
, "extern const BUILTIN32_DESCRIPTOR %s_Descriptor;\n",
1035 for (i
= Base
, odp
= OrdinalDefinitions
+ Base
; i
<= Limit
; i
++, odp
++)
1037 if (odp
->type
!= TYPE_STUB
) continue;
1038 fprintf( outfile
, "static void __stub_%d() { BUILTIN32_Unimplemented(&%s_Descriptor,%d); }\n",
1042 /* Output code for all register functions */
1044 fprintf( outfile
, "#ifdef __i386__\n" );
1045 fprintf( outfile
, "#ifndef __GNUC__\n" );
1046 fprintf( outfile
, "static void __asm__dummy() {\n" );
1047 fprintf( outfile
, "#endif /* !defined(__GNUC__) */\n" );
1048 for (i
= Base
, odp
= OrdinalDefinitions
+ Base
; i
<= Limit
; i
++, odp
++)
1050 if (odp
->type
!= TYPE_REGISTER
) continue;
1052 "__asm__(\".align 4\\n\\t\"\n"
1053 " \".globl " PREFIX
"%s\\n\\t\"\n"
1054 " \".type " PREFIX
"%s,@function\\n\\t\"\n"
1055 " \"" PREFIX
"%s:\\n\\t\"\n"
1056 " \"call " PREFIX
"CALL32_Regs\\n\\t\"\n"
1057 " \".long " PREFIX
"__regs_%s\\n\\t\"\n"
1058 " \".byte %d,%d\");\n",
1059 odp
->u
.func
.link_name
, odp
->u
.func
.link_name
,
1060 odp
->u
.func
.link_name
, odp
->u
.func
.link_name
,
1061 4 * strlen(odp
->u
.func
.arg_types
),
1062 4 * strlen(odp
->u
.func
.arg_types
) );
1064 fprintf( outfile
, "#ifndef __GNUC__\n" );
1065 fprintf( outfile
, "}\n" );
1066 fprintf( outfile
, "#endif /* !defined(__GNUC__) */\n" );
1067 fprintf( outfile
, "#endif /* defined(__i386__) */\n" );
1069 /* Output the DLL functions prototypes */
1071 for (i
= Base
, odp
= OrdinalDefinitions
+ Base
; i
<= Limit
; i
++, odp
++)
1076 fprintf( outfile
, "extern void %s();\n", odp
->u
.ext
.link_name
);
1082 fprintf( outfile
, "extern void %s();\n", odp
->u
.func
.link_name
);
1085 fwd_size
+= strlen(odp
->u
.fwd
.link_name
) + 1;
1091 fprintf(stderr
,"build: function type %d not available for Win32\n",
1097 /* Output LibMain function */
1098 if (DLLInitFunc
[0]) fprintf( outfile
, "extern void %s();\n", DLLInitFunc
);
1101 /* Output the DLL functions table */
1103 fprintf( outfile
, "\nstatic const ENTRYPOINT32 Functions[%d] =\n{\n",
1105 for (i
= Base
, odp
= OrdinalDefinitions
+ Base
; i
<= Limit
; i
++, odp
++)
1110 fprintf( outfile
, " 0" );
1113 fprintf( outfile
, " %s", odp
->u
.ext
.link_name
);
1119 fprintf( outfile
, " %s", odp
->u
.func
.link_name
);
1122 fprintf( outfile
, " __stub_%d", i
);
1125 fprintf( outfile
, " (ENTRYPOINT32)\"%s\"", odp
->u
.fwd
.link_name
);
1130 if (i
< Limit
) fprintf( outfile
, ",\n" );
1132 fprintf( outfile
, "\n};\n\n" );
1134 /* Output the DLL names table */
1137 fprintf( outfile
, "static const char * const FuncNames[] =\n{\n" );
1138 for (i
= Base
, odp
= OrdinalDefinitions
+ Base
; i
<= Limit
; i
++, odp
++)
1140 if (odp
->type
== TYPE_INVALID
) continue;
1141 if (nb_names
++) fprintf( outfile
, ",\n" );
1142 fprintf( outfile
, " \"%s\"", odp
->name
);
1144 fprintf( outfile
, "\n};\n\n" );
1146 /* Output the DLL argument types */
1148 fprintf( outfile
, "static const unsigned int ArgTypes[%d] =\n{\n",
1150 for (i
= Base
, odp
= OrdinalDefinitions
+ Base
; i
<= Limit
; i
++, odp
++)
1152 unsigned int j
, mask
= 0;
1153 if ((odp
->type
== TYPE_STDCALL
) || (odp
->type
== TYPE_CDECL
) ||
1154 (odp
->type
== TYPE_REGISTER
))
1155 for (j
= 0; odp
->u
.func
.arg_types
[j
]; j
++)
1157 if (odp
->u
.func
.arg_types
[j
] == 't') mask
|= 1<< (j
*2);
1158 if (odp
->u
.func
.arg_types
[j
] == 'W') mask
|= 2<< (j
*2);
1160 fprintf( outfile
, " %d", mask
);
1161 if (i
< Limit
) fprintf( outfile
, ",\n" );
1163 fprintf( outfile
, "\n};\n\n" );
1165 /* Output the DLL ordinals table */
1167 fprintf( outfile
, "static const unsigned short FuncOrdinals[] =\n{\n" );
1169 for (i
= Base
, odp
= OrdinalDefinitions
+ Base
; i
<= Limit
; i
++, odp
++)
1171 if (odp
->type
== TYPE_INVALID
) continue;
1172 if (nb_names
++) fprintf( outfile
, ",\n" );
1173 fprintf( outfile
, " %d", i
- Base
);
1175 fprintf( outfile
, "\n};\n\n" );
1177 /* Output the DLL functions arguments */
1179 fprintf( outfile
, "static const unsigned char FuncArgs[%d] =\n{\n",
1181 for (i
= Base
, odp
= OrdinalDefinitions
+ Base
; i
<= Limit
; i
++, odp
++)
1187 args
= (unsigned char)strlen(odp
->u
.func
.arg_types
);
1190 args
= 0x80 | (unsigned char)strlen(odp
->u
.func
.arg_types
);
1193 args
= 0x40 | (unsigned char)strlen(odp
->u
.func
.arg_types
);
1202 fprintf( outfile
, " 0x%02x", args
);
1203 if (i
< Limit
) fprintf( outfile
, ",\n" );
1205 fprintf( outfile
, "\n};\n\n" );
1207 /* Output the DLL imports */
1211 fprintf( outfile
, "static const char * const Imports[%d] =\n{\n", nb_imports
);
1212 for (i
= 0; i
< nb_imports
; i
++)
1214 fprintf( outfile
, " \"%s\"", DLLImports
[i
] );
1215 if (i
< nb_imports
-1) fprintf( outfile
, ",\n" );
1217 fprintf( outfile
, "\n};\n\n" );
1220 /* Output the DLL descriptor */
1222 fprintf( outfile
, "const BUILTIN32_DESCRIPTOR %s_Descriptor =\n{\n",
1224 fprintf( outfile
, " \"%s\",\n", DLLName
);
1225 fprintf( outfile
, " \"%s\",\n", DLLFileName
);
1226 fprintf( outfile
, " %d,\n", Base
);
1227 fprintf( outfile
, " %d,\n", Limit
- Base
+ 1 );
1228 fprintf( outfile
, " %d,\n", nb_names
);
1229 fprintf( outfile
, " %d,\n", nb_imports
);
1230 fprintf( outfile
, " %d,\n", (fwd_size
+ 3) & ~3 );
1237 fprintf( outfile
, " %s,\n", nb_imports
? "Imports" : "0" );
1238 fprintf( outfile
, " %s\n", DLLInitFunc
[0] ? DLLInitFunc
: "0" );
1239 fprintf( outfile
, "};\n" );
1243 /*******************************************************************
1246 static int Spec16TypeCompare( const void *e1
, const void *e2
)
1248 const ORDDEF
*odp1
= *(const ORDDEF
**)e1
;
1249 const ORDDEF
*odp2
= *(const ORDDEF
**)e2
;
1251 int type1
= (odp1
->type
== TYPE_CDECL
) ? 0
1252 : (odp1
->type
== TYPE_REGISTER
) ? 3
1253 : (odp1
->type
== TYPE_INTERRUPT
) ? 4
1254 : (odp1
->type
== TYPE_PASCAL_16
) ? 1 : 2;
1256 int type2
= (odp2
->type
== TYPE_CDECL
) ? 0
1257 : (odp2
->type
== TYPE_REGISTER
) ? 3
1258 : (odp2
->type
== TYPE_INTERRUPT
) ? 4
1259 : (odp2
->type
== TYPE_PASCAL_16
) ? 1 : 2;
1261 int retval
= type1
- type2
;
1263 retval
= strcmp( odp1
->u
.func
.arg_types
, odp2
->u
.func
.arg_types
);
1268 /*******************************************************************
1271 * Build a Win16 assembly file from a spec file.
1273 static int BuildSpec16File( char * specfile
, FILE *outfile
)
1275 ORDDEF
*odp
, **type
, **typelist
;
1276 int i
, nFuncs
, nTypes
;
1277 int code_offset
, data_offset
, module_size
;
1278 unsigned char *data
;
1282 fprintf( outfile
, "/* File generated automatically from %s; do not edit! */\n\n",
1284 fprintf( outfile
, "#define __FLATCS__ 0x%04x\n", Code_Selector
);
1285 fprintf( outfile
, "#include \"builtin16.h\"\n\n" );
1287 data
= (unsigned char *)xmalloc( 0x10000 );
1288 memset( data
, 0, 16 );
1292 /* Build sorted list of all argument types, without duplicates */
1294 typelist
= (ORDDEF
**)calloc( Limit
+1, sizeof(ORDDEF
*) );
1296 odp
= OrdinalDefinitions
;
1297 for (i
= nFuncs
= 0; i
<= Limit
; i
++, odp
++)
1302 case TYPE_INTERRUPT
:
1305 case TYPE_PASCAL_16
:
1307 typelist
[nFuncs
++] = odp
;
1314 qsort( typelist
, nFuncs
, sizeof(ORDDEF
*), Spec16TypeCompare
);
1317 while ( i
< nFuncs
)
1319 typelist
[nTypes
++] = typelist
[i
++];
1320 while ( i
< nFuncs
&& Spec16TypeCompare( typelist
+ i
, typelist
+ nTypes
-1 ) == 0 )
1324 /* Output CallFrom16 routines needed by this .spec file */
1326 for ( i
= 0; i
< nTypes
; i
++ )
1330 sprintf( profile
, "%s_%s_%s",
1331 (typelist
[i
]->type
== TYPE_CDECL
) ? "c" : "p",
1332 (typelist
[i
]->type
== TYPE_REGISTER
) ? "regs" :
1333 (typelist
[i
]->type
== TYPE_INTERRUPT
) ? "intr" :
1334 (typelist
[i
]->type
== TYPE_PASCAL_16
) ? "word" : "long",
1335 typelist
[i
]->u
.func
.arg_types
);
1337 BuildCallFrom16Func( outfile
, profile
, DLLName
, TRUE
);
1340 /* Output the DLL functions prototypes */
1342 odp
= OrdinalDefinitions
;
1343 for (i
= 0; i
<= Limit
; i
++, odp
++)
1348 case TYPE_INTERRUPT
:
1351 case TYPE_PASCAL_16
:
1352 fprintf( outfile
, "extern void %s();\n", odp
->u
.func
.link_name
);
1359 /* Output code segment */
1361 fprintf( outfile
, "\nstatic struct\n{\n CALLFROM16 call[%d];\n"
1362 " ENTRYPOINT16 entry[%d];\n} Code_Segment = \n{\n {\n",
1366 for ( i
= 0; i
< nTypes
; i
++ )
1368 char profile
[101], *arg
;
1371 sprintf( profile
, "%s_%s_%s",
1372 (typelist
[i
]->type
== TYPE_CDECL
) ? "c" : "p",
1373 (typelist
[i
]->type
== TYPE_REGISTER
) ? "regs" :
1374 (typelist
[i
]->type
== TYPE_INTERRUPT
) ? "intr" :
1375 (typelist
[i
]->type
== TYPE_PASCAL_16
) ? "word" : "long",
1376 typelist
[i
]->u
.func
.arg_types
);
1378 if ( typelist
[i
]->type
!= TYPE_CDECL
)
1379 for ( arg
= typelist
[i
]->u
.func
.arg_types
; *arg
; arg
++ )
1382 case 'w': /* word */
1383 case 's': /* s_word */
1387 case 'l': /* long or segmented pointer */
1388 case 'T': /* segmented pointer to null-terminated string */
1389 case 'p': /* linear pointer */
1390 case 't': /* linear pointer to null-terminated string */
1395 if ( typelist
[i
]->type
== TYPE_INTERRUPT
)
1398 fprintf( outfile
, " CF16_%s( %s_CallFrom16_%s, %d, \"%s\" ),\n",
1399 ( typelist
[i
]->type
== TYPE_REGISTER
1400 || typelist
[i
]->type
== TYPE_INTERRUPT
)? "REGS":
1401 typelist
[i
]->type
== TYPE_PASCAL_16
? "WORD" : "LONG",
1402 DLLName
, profile
, argsize
, profile
);
1404 code_offset
+= sizeof(CALLFROM16
);
1406 fprintf( outfile
, " },\n {\n" );
1408 odp
= OrdinalDefinitions
;
1409 for (i
= 0; i
<= Limit
; i
++, odp
++)
1414 odp
->offset
= 0xffff;
1418 odp
->offset
= LOWORD(odp
->u
.abs
.value
);
1422 odp
->offset
= data_offset
;
1423 data_offset
+= StoreVariableCode( data
+ data_offset
, 1, odp
);
1427 odp
->offset
= data_offset
;
1428 data_offset
+= StoreVariableCode( data
+ data_offset
, 2, odp
);
1432 odp
->offset
= data_offset
;
1433 data_offset
+= StoreVariableCode( data
+ data_offset
, 4, odp
);
1437 case TYPE_INTERRUPT
:
1440 case TYPE_PASCAL_16
:
1442 type
= bsearch( &odp
, typelist
, nTypes
, sizeof(ORDDEF
*), Spec16TypeCompare
);
1445 fprintf( outfile
, " /* %s.%d */ ", DLLName
, i
);
1446 fprintf( outfile
, "EP( %s, %d /* %s_%s_%s */ ),\n",
1447 odp
->u
.func
.link_name
,
1448 (type
-typelist
)*sizeof(CALLFROM16
) -
1449 (code_offset
+ sizeof(ENTRYPOINT16
)),
1450 (odp
->type
== TYPE_CDECL
) ? "c" : "p",
1451 (odp
->type
== TYPE_REGISTER
) ? "regs" :
1452 (odp
->type
== TYPE_INTERRUPT
) ? "intr" :
1453 (odp
->type
== TYPE_PASCAL_16
) ? "word" : "long",
1454 odp
->u
.func
.arg_types
);
1456 odp
->offset
= code_offset
;
1457 code_offset
+= sizeof(ENTRYPOINT16
);
1461 fprintf(stderr
,"build: function type %d not available for Win16\n",
1467 fprintf( outfile
, " }\n};\n" );
1469 /* Output data segment */
1471 DumpBytes( outfile
, data
, data_offset
, "Data_Segment" );
1473 /* Build the module */
1475 module_size
= BuildModule16( outfile
, code_offset
, data_offset
);
1477 /* Output the DLL descriptor */
1479 fprintf( outfile
, "\nWIN16_DESCRIPTOR %s_Descriptor = \n{\n", DLLName
);
1480 fprintf( outfile
, " \"%s\",\n", DLLName
);
1481 fprintf( outfile
, " Module,\n" );
1482 fprintf( outfile
, " sizeof(Module),\n" );
1483 fprintf( outfile
, " (BYTE *)&Code_Segment,\n" );
1484 fprintf( outfile
, " (BYTE *)Data_Segment\n" );
1485 fprintf( outfile
, "};\n" );
1491 /*******************************************************************
1494 * Build an assembly file from a spec file.
1496 static int BuildSpecFile( FILE *outfile
, char *specname
)
1498 SpecName
= specname
;
1499 SpecFp
= fopen( specname
, "r");
1502 fprintf(stderr
, "Could not open specification file, '%s'\n", specname
);
1506 if (ParseTopLevel() < 0) return -1;
1511 return BuildSpec16File( specname
, outfile
);
1513 return BuildSpec32File( specname
, outfile
);
1515 fprintf( stderr
, "%s: Missing 'type' declaration\n", specname
);
1521 /*******************************************************************
1522 * BuildCallFrom16Func
1524 * Build a 16-bit-to-Wine callback glue function.
1526 * The generated routines are intended to be used as argument conversion
1527 * routines to be called by the CallFrom16... core. Thus, the prototypes of
1528 * the generated routines are (see also CallFrom16):
1530 * extern WORD WINAPI PREFIX_CallFrom16_C_word_xxx( FARPROC func, LPBYTE args );
1531 * extern LONG WINAPI PREFIX_CallFrom16_C_long_xxx( FARPROC func, LPBYTE args );
1532 * extern void WINAPI PREFIX_CallFrom16_C_regs_xxx( FARPROC func, LPBYTE args,
1533 * CONTEXT86 *context );
1534 * extern void WINAPI PREFIX_CallFrom16_C_intr_xxx( FARPROC func, LPBYTE args,
1535 * CONTEXT86 *context );
1537 * where 'C' is the calling convention ('p' for pascal or 'c' for cdecl),
1538 * and each 'x' is an argument ('w'=word, 's'=signed word, 'l'=long,
1539 * 'p'=linear pointer, 't'=linear pointer to null-terminated string,
1540 * 'T'=segmented pointer to null-terminated string).
1542 * The generated routines fetch the arguments from the 16-bit stack (pointed
1543 * to by 'args'); the offsets of the single argument values are computed
1544 * according to the calling convention and the argument types. Then, the
1545 * 32-bit entry point is called with these arguments.
1547 * For register functions, the arguments (if present) are converted just
1548 * the same as for normal functions, but in addition the CONTEXT86 pointer
1549 * filled with the current register values is passed to the 32-bit routine.
1550 * (An 'intr' interrupt handler routine is treated exactly like a register
1551 * routine, except that upon return, the flags word pushed onto the stack
1552 * by the interrupt is removed by the 16-bit call stub.)
1555 static void BuildCallFrom16Func( FILE *outfile
, char *profile
, char *prefix
, int local
)
1557 int i
, pos
, argsize
= 0;
1561 char *args
= profile
+ 7;
1564 /* Parse function type */
1566 if (!strncmp( "c_", profile
, 2 )) usecdecl
= 1;
1567 else if (strncmp( "p_", profile
, 2 ))
1569 fprintf( stderr
, "Invalid function name '%s', ignored\n", profile
);
1573 if (!strncmp( "word_", profile
+ 2, 5 )) short_ret
= 1;
1574 else if (!strncmp( "regs_", profile
+ 2, 5 )) reg_func
= 1;
1575 else if (!strncmp( "intr_", profile
+ 2, 5 )) reg_func
= 2;
1576 else if (strncmp( "long_", profile
+ 2, 5 ))
1578 fprintf( stderr
, "Invalid function name '%s', ignored\n", profile
);
1582 for ( i
= 0; args
[i
]; i
++ )
1585 case 'w': /* word */
1586 case 's': /* s_word */
1590 case 'l': /* long or segmented pointer */
1591 case 'T': /* segmented pointer to null-terminated string */
1592 case 'p': /* linear pointer */
1593 case 't': /* linear pointer to null-terminated string */
1598 ret_type
= reg_func
? "void" : short_ret
? "WORD" : "LONG";
1600 fprintf( outfile
, "typedef %s WINAPI (*proc_%s_t)( ",
1601 ret_type
, profile
);
1603 for ( i
= 0; args
[i
]; i
++ )
1605 if ( i
) fprintf( outfile
, ", " );
1608 case 'w': fprintf( outfile
, "WORD" ); break;
1609 case 's': fprintf( outfile
, "INT16" ); break;
1610 case 'l': case 'T': fprintf( outfile
, "LONG" ); break;
1611 case 'p': case 't': fprintf( outfile
, "LPVOID" ); break;
1615 fprintf( outfile
, "%sstruct _CONTEXT86 *", i
? ", " : "" );
1617 fprintf( outfile
, "void" );
1618 fprintf( outfile
, " );\n" );
1620 fprintf( outfile
, "%s%s WINAPI %s_CallFrom16_%s( FARPROC proc, LPBYTE args%s )\n{\n",
1621 local
? "static " : "", ret_type
, prefix
, profile
,
1622 reg_func
? ", struct _CONTEXT86 *context" : "" );
1624 fprintf( outfile
, " %s((proc_%s_t) proc) (\n",
1625 reg_func
? "" : "return ", profile
);
1627 pos
= !usecdecl
? argsize
: 0;
1628 for ( i
= 0; args
[i
]; i
++ )
1630 if ( i
) fprintf( outfile
, ",\n" );
1631 fprintf( outfile
, " " );
1634 case 'w': /* word */
1635 if ( !usecdecl
) pos
-= 2;
1636 fprintf( outfile
, "*(WORD *)(args+%d)", pos
);
1637 if ( usecdecl
) pos
+= 2;
1640 case 's': /* s_word */
1641 if ( !usecdecl
) pos
-= 2;
1642 fprintf( outfile
, "*(INT16 *)(args+%d)", pos
);
1643 if ( usecdecl
) pos
+= 2;
1646 case 'l': /* long or segmented pointer */
1647 case 'T': /* segmented pointer to null-terminated string */
1648 if ( !usecdecl
) pos
-= 4;
1649 fprintf( outfile
, "*(LONG *)(args+%d)", pos
);
1650 if ( usecdecl
) pos
+= 4;
1653 case 'p': /* linear pointer */
1654 case 't': /* linear pointer to null-terminated string */
1655 if ( !usecdecl
) pos
-= 4;
1656 fprintf( outfile
, "PTR_SEG_TO_LIN( *(SEGPTR *)(args+%d) )", pos
);
1657 if ( usecdecl
) pos
+= 4;
1661 fprintf( stderr
, "Unknown arg type '%c'\n", args
[i
] );
1665 fprintf( outfile
, "%s context", i
? ",\n" : "" );
1666 fprintf( outfile
, " );\n}\n\n" );
1669 /*******************************************************************
1672 * Build a Wine-to-16-bit callback glue function.
1674 * Prototypes for the CallTo16 functions:
1675 * extern WORD CALLBACK PREFIX_CallTo16_word_xxx( FARPROC16 func, args... );
1676 * extern LONG CALLBACK PREFIX_CallTo16_long_xxx( FARPROC16 func, args... );
1678 * These routines are provided solely for convenience; they simply
1679 * write the arguments onto the 16-bit stack, and call the appropriate
1680 * CallTo16... core routine.
1682 * If you have more sophisticated argument conversion requirements than
1683 * are provided by these routines, you might as well call the core
1684 * routines by yourself.
1687 static void BuildCallTo16Func( FILE *outfile
, char *profile
, char *prefix
)
1689 char *args
= profile
+ 5;
1690 int i
, argsize
= 0, short_ret
= 0;
1692 if (!strncmp( "word_", profile
, 5 )) short_ret
= 1;
1693 else if (strncmp( "long_", profile
, 5 ))
1695 fprintf( stderr
, "Invalid function name '%s'.\n", profile
);
1699 fprintf( outfile
, "%s %s_CallTo16_%s( FARPROC16 proc",
1700 short_ret
? "WORD" : "LONG", prefix
, profile
);
1702 for ( i
= 0; args
[i
]; i
++ )
1704 fprintf( outfile
, ", " );
1707 case 'w': fprintf( outfile
, "WORD" ); argsize
+= 2; break;
1708 case 'l': fprintf( outfile
, "LONG" ); argsize
+= 4; break;
1710 fprintf( outfile
, " arg%d", i
+1 );
1712 fprintf( outfile
, " )\n{\n" );
1715 fprintf( outfile
, " LPBYTE args = (LPBYTE)CURRENT_STACK16;\n" );
1718 for ( i
= 0; args
[i
]; i
++ )
1722 case 'w': fprintf( outfile
, " args -= sizeof(WORD); *(WORD" ); break;
1723 case 'l': fprintf( outfile
, " args -= sizeof(LONG); *(LONG" ); break;
1724 default: fprintf( stderr
, "Unexpected case '%c' in BuildCallTo16Func\n",
1727 fprintf( outfile
, " *)args = arg%d;\n", i
+1 );
1730 fprintf( outfile
, " return CallTo16%s( proc, %d );\n}\n\n",
1731 short_ret
? "Word" : "Long", argsize
);
1736 /*******************************************************************
1737 * BuildCallFrom16Core
1739 * This routine builds the core routines used in 16->32 thunks:
1740 * CallFrom16Word, CallFrom16Long, CallFrom16Register, and CallFrom16Thunk.
1742 * These routines are intended to be called via a far call (with 32-bit
1743 * operand size) from 16-bit code. The 16-bit code stub must push %bp,
1744 * the 32-bit entry point to be called, and the argument conversion
1745 * routine to be used (see stack layout below).
1747 * The core routine completes the STACK16FRAME on the 16-bit stack and
1748 * switches to the 32-bit stack. Then, the argument conversion routine
1749 * is called; it gets passed the 32-bit entry point and a pointer to the
1750 * 16-bit arguments (on the 16-bit stack) as parameters. (You can either
1751 * use conversion routines automatically generated by BuildCallFrom16,
1752 * or write your own for special purposes.)
1754 * The conversion routine must call the 32-bit entry point, passing it
1755 * the converted arguments, and return its return value to the core.
1756 * After the conversion routine has returned, the core switches back
1757 * to the 16-bit stack, converts the return value to the DX:AX format
1758 * (CallFrom16Long), and returns to the 16-bit call stub. All parameters,
1759 * including %bp, are popped off the stack.
1761 * The 16-bit call stub now returns to the caller, popping the 16-bit
1762 * arguments if necessary (pascal calling convention).
1764 * In the case of a 'register' function, CallFrom16Register fills a
1765 * CONTEXT86 structure with the values all registers had at the point
1766 * the first instruction of the 16-bit call stub was about to be
1767 * executed. A pointer to this CONTEXT86 is passed as third parameter
1768 * to the argument conversion routine, which typically passes it on
1769 * to the called 32-bit entry point.
1771 * CallFrom16Thunk is a special variant used by the implementation of
1772 * the Win95 16->32 thunk functions C16ThkSL and C16ThkSL01 and is
1773 * implemented as follows:
1774 * On entry, the EBX register is set up to contain a flat pointer to the
1775 * 16-bit stack such that EBX+22 points to the first argument.
1776 * Then, the entry point is called, while EBP is set up to point
1777 * to the return address (on the 32-bit stack).
1778 * The called function returns with CX set to the number of bytes
1779 * to be popped of the caller's stack.
1781 * Stack layout upon entry to the core routine (STACK16FRAME):
1783 * (sp+24) word first 16-bit arg
1787 * (sp+14) long 32-bit entry point (reused for Win16 mutex recursion count)
1788 * (sp+12) word ip of actual entry point (necessary for relay debugging)
1789 * (sp+8) long relay (argument conversion) function entry point
1790 * (sp+4) long cs of 16-bit entry point
1791 * (sp) long ip of 16-bit entry point
1793 * Added on the stack:
1794 * (sp-2) word saved gs
1795 * (sp-4) word saved fs
1796 * (sp-6) word saved es
1797 * (sp-8) word saved ds
1798 * (sp-12) long saved ebp
1799 * (sp-16) long saved ecx
1800 * (sp-20) long saved edx
1801 * (sp-24) long saved previous stack
1803 static void BuildCallFrom16Core( FILE *outfile
, int reg_func
, int thunk
, int short_ret
)
1805 char *name
= thunk
? "Thunk" : reg_func
? "Register" : short_ret
? "Word" : "Long";
1807 /* Function header */
1808 fprintf( outfile
, "\n\t.align 4\n" );
1810 fprintf( outfile
, ".stabs \"CallFrom16%s:F1\",36,0,0," PREFIX
"CallFrom16%s\n",
1813 fprintf( outfile
, "\t.globl " PREFIX
"CallFrom16%s\n", name
);
1814 fprintf( outfile
, PREFIX
"CallFrom16%s:\n", name
);
1816 /* Create STACK16FRAME (except STACK32FRAME link) */
1817 fprintf( outfile
, "\tpushw %%gs\n" );
1818 fprintf( outfile
, "\tpushw %%fs\n" );
1819 fprintf( outfile
, "\tpushw %%es\n" );
1820 fprintf( outfile
, "\tpushw %%ds\n" );
1821 fprintf( outfile
, "\tpushl %%ebp\n" );
1822 fprintf( outfile
, "\tpushl %%ecx\n" );
1823 fprintf( outfile
, "\tpushl %%edx\n" );
1825 /* Save original EFlags register */
1826 fprintf( outfile
, "\tpushfl\n" );
1830 /* Get Global Offset Table into %ecx */
1831 fprintf( outfile
, "\tcall .LCallFrom16%s.getgot1\n", name
);
1832 fprintf( outfile
, ".LCallFrom16%s.getgot1:\n", name
);
1833 fprintf( outfile
, "\tpopl %%ecx\n" );
1834 fprintf( outfile
, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot1], %%ecx\n", name
);
1837 /* Load 32-bit segment registers */
1838 fprintf( outfile
, "\tmovw $0x%04x, %%dx\n", Data_Selector
);
1840 fprintf( outfile
, "\tdata16\n");
1842 fprintf( outfile
, "\tmovw %%dx, %%ds\n" );
1844 fprintf( outfile
, "\tdata16\n");
1846 fprintf( outfile
, "\tmovw %%dx, %%es\n" );
1850 fprintf( outfile
, "\tmovl " PREFIX
"SYSLEVEL_Win16CurrentTeb@GOT(%%ecx), %%edx\n" );
1851 fprintf( outfile
, "\tmovw (%%edx), %%fs\n" );
1854 fprintf( outfile
, "\tmovw " PREFIX
"SYSLEVEL_Win16CurrentTeb, %%fs\n" );
1856 /* Get address of ldt_copy array into %ecx */
1858 fprintf( outfile
, "\tmovl " PREFIX
"ldt_copy@GOT(%%ecx), %%ecx\n" );
1860 fprintf( outfile
, "\tmovl $" PREFIX
"ldt_copy, %%ecx\n" );
1862 /* Translate STACK16FRAME base to flat offset in %edx */
1863 fprintf( outfile
, "\tmovw %%ss, %%dx\n" );
1864 fprintf( outfile
, "\tandl $0xfff8, %%edx\n" );
1865 fprintf( outfile
, "\tmovl (%%ecx,%%edx), %%edx\n" );
1866 fprintf( outfile
, "\tmovzwl %%sp, %%ebp\n" );
1867 fprintf( outfile
, "\tleal (%%ebp,%%edx), %%edx\n" );
1869 /* Get saved flags into %ecx */
1870 fprintf( outfile
, "\tpopl %%ecx\n" );
1872 /* Get the 32-bit stack pointer from the TEB and complete STACK16FRAME */
1873 fprintf( outfile
, "\t.byte 0x64\n\tmovl (%d), %%ebp\n", STACKOFFSET
);
1874 fprintf( outfile
, "\tpushl %%ebp\n" );
1878 fprintf( outfile
,"\tdata16\n");
1880 fprintf( outfile
, "\t.byte 0x64\n\tmovw %%ss, (%d)\n", STACKOFFSET
+ 2 );
1881 fprintf( outfile
, "\t.byte 0x64\n\tmovw %%sp, (%d)\n", STACKOFFSET
);
1882 fprintf( outfile
, "\tpushl %%ds\n" );
1883 fprintf( outfile
, "\tpopl %%ss\n" );
1884 fprintf( outfile
, "\tmovl %%ebp, %%esp\n" );
1885 fprintf( outfile
, "\taddl $%d, %%ebp\n", STRUCTOFFSET(STACK32FRAME
, ebp
) );
1889 STACK16FRAME is completely set up
1890 DS, ES, SS: flat data segment
1892 ESP: points to last STACK32FRAME
1893 EBP: points to ebp member of last STACK32FRAME
1894 EDX: points to current STACK16FRAME
1895 ECX: contains saved flags
1896 all other registers: unchanged */
1898 /* Special case: C16ThkSL stub */
1901 /* Set up registers as expected and call thunk */
1902 fprintf( outfile
, "\tleal %d(%%edx), %%ebx\n", sizeof(STACK16FRAME
)-22 );
1903 fprintf( outfile
, "\tleal -4(%%esp), %%ebp\n" );
1905 fprintf( outfile
, "\tcall *%d(%%edx)\n", STACK16OFFSET(entry_point
) );
1907 /* Switch stack back */
1908 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
1909 fprintf( outfile
, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET
);
1910 fprintf( outfile
, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET
);
1912 /* Restore registers and return directly to caller */
1913 fprintf( outfile
, "\taddl $8, %%esp\n" );
1914 fprintf( outfile
, "\tpopl %%ebp\n" );
1915 fprintf( outfile
, "\tpopw %%ds\n" );
1916 fprintf( outfile
, "\tpopw %%es\n" );
1917 fprintf( outfile
, "\tpopw %%fs\n" );
1918 fprintf( outfile
, "\tpopw %%gs\n" );
1919 fprintf( outfile
, "\taddl $20, %%esp\n" );
1921 fprintf( outfile
, "\txorb %%ch, %%ch\n" );
1922 fprintf( outfile
, "\tpopl %%ebx\n" );
1923 fprintf( outfile
, "\taddw %%cx, %%sp\n" );
1924 fprintf( outfile
, "\tpush %%ebx\n" );
1926 fprintf( outfile
, "\t.byte 0x66\n" );
1927 fprintf( outfile
, "\tlret\n" );
1933 /* Build register CONTEXT */
1936 fprintf( outfile
, "\tsubl $%d, %%esp\n", sizeof(CONTEXT86
) );
1938 fprintf( outfile
, "\tmovl %%ecx, %d(%%esp)\n", CONTEXTOFFSET(EFlags
) );
1940 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eax
) );
1941 fprintf( outfile
, "\tmovl %%ebx, %d(%%esp)\n", CONTEXTOFFSET(Ebx
) );
1942 fprintf( outfile
, "\tmovl %%esi, %d(%%esp)\n", CONTEXTOFFSET(Esi
) );
1943 fprintf( outfile
, "\tmovl %%edi, %d(%%esp)\n", CONTEXTOFFSET(Edi
) );
1945 fprintf( outfile
, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ebp
) );
1946 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ebp
) );
1947 fprintf( outfile
, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(ecx
) );
1948 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Ecx
) );
1949 fprintf( outfile
, "\tmovl %d(%%edx), %%eax\n", STACK16OFFSET(edx
) );
1950 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Edx
) );
1952 fprintf( outfile
, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ds
) );
1953 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegDs
) );
1954 fprintf( outfile
, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(es
) );
1955 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegEs
) );
1956 fprintf( outfile
, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(fs
) );
1957 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegFs
) );
1958 fprintf( outfile
, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(gs
) );
1959 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegGs
) );
1961 fprintf( outfile
, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(cs
) );
1962 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegCs
) );
1963 fprintf( outfile
, "\tmovzwl %d(%%edx), %%eax\n", STACK16OFFSET(ip
) );
1964 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Eip
) );
1966 fprintf( outfile
, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET
+2 );
1967 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(SegSs
) );
1968 fprintf( outfile
, "\t.byte 0x64\n\tmovzwl (%d), %%eax\n", STACKOFFSET
);
1969 fprintf( outfile
, "\taddl $%d, %%eax\n", STACK16OFFSET(ip
) );
1970 fprintf( outfile
, "\tmovl %%eax, %d(%%esp)\n", CONTEXTOFFSET(Esp
) );
1972 fprintf( outfile
, "\tfsave %d(%%esp)\n", CONTEXTOFFSET(FloatSave
) );
1975 /* Push address of CONTEXT86 structure -- popped by the relay routine */
1976 fprintf( outfile
, "\tpushl %%esp\n" );
1980 /* Print debug info before call */
1985 fprintf( outfile
, "\tpushl %%ebx\n" );
1987 /* Get Global Offset Table into %ebx (for PLT call) */
1988 fprintf( outfile
, "\tcall .LCallFrom16%s.getgot2\n", name
);
1989 fprintf( outfile
, ".LCallFrom16%s.getgot2:\n", name
);
1990 fprintf( outfile
, "\tpopl %%ebx\n" );
1991 fprintf( outfile
, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot2], %%ebx\n", name
);
1994 fprintf( outfile
, "\tpushl %%edx\n" );
1996 fprintf( outfile
, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
1997 sizeof(CONTEXT
) + STRUCTOFFSET(STACK32FRAME
, ebp
) );
1999 fprintf( outfile
, "\tpushl $0\n" );
2002 fprintf( outfile
, "\tcall " PREFIX
"RELAY_DebugCallFrom16@PLT\n ");
2004 fprintf( outfile
, "\tcall " PREFIX
"RELAY_DebugCallFrom16\n ");
2006 fprintf( outfile
, "\tpopl %%edx\n" );
2007 fprintf( outfile
, "\tpopl %%edx\n" );
2010 fprintf( outfile
, "\tpopl %%ebx\n" );
2013 /* Call relay routine (which will call the API entry point) */
2014 fprintf( outfile
, "\tleal %d(%%edx), %%eax\n", sizeof(STACK16FRAME
) );
2015 fprintf( outfile
, "\tpushl %%eax\n" );
2016 fprintf( outfile
, "\tpushl %d(%%edx)\n", STACK16OFFSET(entry_point
) );
2017 fprintf( outfile
, "\tcall *%d(%%edx)\n", STACK16OFFSET(relay
) );
2019 /* Print debug info after call */
2024 fprintf( outfile
, "\tpushl %%ebx\n" );
2026 /* Get Global Offset Table into %ebx (for PLT call) */
2027 fprintf( outfile
, "\tcall .LCallFrom16%s.getgot3\n", name
);
2028 fprintf( outfile
, ".LCallFrom16%s.getgot3:\n", name
);
2029 fprintf( outfile
, "\tpopl %%ebx\n" );
2030 fprintf( outfile
, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallFrom16%s.getgot3], %%ebx\n", name
);
2033 fprintf( outfile
, "\tpushl %%eax\n" );
2035 fprintf( outfile
, "\tleal -%d(%%ebp), %%eax\n\tpushl %%eax\n",
2036 sizeof(CONTEXT
) + STRUCTOFFSET(STACK32FRAME
, ebp
) );
2038 fprintf( outfile
, "\tpushl $0\n" );
2041 fprintf( outfile
, "\tcall " PREFIX
"RELAY_DebugCallFrom16Ret@PLT\n ");
2043 fprintf( outfile
, "\tcall " PREFIX
"RELAY_DebugCallFrom16Ret\n ");
2045 fprintf( outfile
, "\tpopl %%eax\n" );
2046 fprintf( outfile
, "\tpopl %%eax\n" );
2049 fprintf( outfile
, "\tpopl %%ebx\n" );
2055 fprintf( outfile
, "\tmovl %%esp, %%ebx\n" );
2057 /* Switch stack back */
2058 /* fprintf( outfile, "\t.byte 0x64\n\tlssw (%d), %%sp\n", STACKOFFSET ); */
2059 fprintf( outfile
, "\t.byte 0x64,0x66,0x0f,0xb2,0x25\n\t.long %d\n", STACKOFFSET
);
2060 fprintf( outfile
, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET
);
2062 /* Get return address to CallFrom16 stub */
2063 fprintf( outfile
, "\taddw $%d, %%sp\n", STACK16OFFSET(callfrom_ip
)-4 );
2064 fprintf( outfile
, "\tpopl %%eax\n" );
2065 fprintf( outfile
, "\tpopl %%edx\n" );
2067 /* Restore all registers from CONTEXT */
2068 fprintf( outfile
, "\tmovw %d(%%ebx), %%ss\n", CONTEXTOFFSET(SegSs
) );
2069 fprintf( outfile
, "\tmovl %d(%%ebx), %%esp\n", CONTEXTOFFSET(Esp
) );
2070 fprintf( outfile
, "\taddl $4, %%esp\n" ); /* room for final return address */
2072 fprintf( outfile
, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(SegCs
) );
2073 fprintf( outfile
, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(Eip
) );
2074 fprintf( outfile
, "\tpushl %%edx\n" );
2075 fprintf( outfile
, "\tpushl %%eax\n" );
2076 fprintf( outfile
, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(EFlags
) );
2077 fprintf( outfile
, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(SegDs
) );
2079 fprintf( outfile
, "\tmovw %d(%%ebx), %%es\n", CONTEXTOFFSET(SegEs
) );
2080 fprintf( outfile
, "\tmovw %d(%%ebx), %%fs\n", CONTEXTOFFSET(SegFs
) );
2081 fprintf( outfile
, "\tmovw %d(%%ebx), %%gs\n", CONTEXTOFFSET(SegGs
) );
2083 fprintf( outfile
, "\tmovl %d(%%ebx), %%ebp\n", CONTEXTOFFSET(Ebp
) );
2084 fprintf( outfile
, "\tmovl %d(%%ebx), %%esi\n", CONTEXTOFFSET(Esi
) );
2085 fprintf( outfile
, "\tmovl %d(%%ebx), %%edi\n", CONTEXTOFFSET(Edi
) );
2086 fprintf( outfile
, "\tmovl %d(%%ebx), %%eax\n", CONTEXTOFFSET(Eax
) );
2087 fprintf( outfile
, "\tmovl %d(%%ebx), %%edx\n", CONTEXTOFFSET(Edx
) );
2088 fprintf( outfile
, "\tmovl %d(%%ebx), %%ecx\n", CONTEXTOFFSET(Ecx
) );
2089 fprintf( outfile
, "\tmovl %d(%%ebx), %%ebx\n", CONTEXTOFFSET(Ebx
) );
2091 fprintf( outfile
, "\tpopl %%ds\n" );
2092 fprintf( outfile
, "\tpopfl\n" );
2093 fprintf( outfile
, "\tlret\n" );
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
);
2102 /* Restore registers */
2103 fprintf( outfile
, "\tpopl %%edx\n" );
2104 fprintf( outfile
, "\tpopl %%ecx\n" );
2105 fprintf( outfile
, "\tpopl %%ebp\n" );
2106 fprintf( outfile
, "\tpopw %%ds\n" );
2107 fprintf( outfile
, "\tpopw %%es\n" );
2108 fprintf( outfile
, "\tpopw %%fs\n" );
2109 fprintf( outfile
, "\tpopw %%gs\n" );
2111 /* Prepare return value and set flags accordingly */
2113 fprintf( outfile
, "\tshldl $16, %%eax, %%edx\n" );
2114 fprintf( outfile
, "\torl %%eax, %%eax\n" );
2116 /* Return to return stub which will return to caller */
2117 fprintf( outfile
, "\tlret $12\n" );
2122 /*******************************************************************
2125 * This routine builds the core routines used in 32->16 thunks:
2127 * extern void CALLBACK CallTo16Word( SEGPTR target, int nb_args );
2128 * extern void CALLBACK CallTo16Long( SEGPTR target, int nb_args );
2129 * extern void CALLBACK CallTo16RegisterShort( const CONTEXT86 *context, int nb_args );
2130 * extern void CALLBACK CallTo16RegisterLong ( const CONTEXT86 *context, int nb_args );
2132 * These routines can be called directly from 32-bit code.
2134 * All routines expect that the 16-bit stack contents (arguments) were
2135 * already set up by the caller; nb_args must contain the number of bytes
2136 * to be conserved. The 16-bit SS:SP will be set accordinly.
2138 * All other registers are either taken from the CONTEXT86 structure
2139 * or else set to default values. The target routine address is either
2140 * given directly or taken from the CONTEXT86.
2142 * If you want to call a 16-bit routine taking only standard argument types
2143 * (WORD and LONG), you can also have an appropriate argument conversion
2144 * stub automatically generated (see BuildCallTo16); you'd then call this
2145 * stub, which in turn would prepare the 16-bit stack and call the appropiate
2150 static void BuildCallTo16Core( FILE *outfile
, int short_ret
, int reg_func
)
2152 char *name
= reg_func
== 2 ? "RegisterLong" :
2153 reg_func
== 1 ? "RegisterShort" :
2154 short_ret
? "Word" : "Long";
2156 /* Function header */
2157 fprintf( outfile
, "\n\t.align 4\n" );
2159 fprintf( outfile
, ".stabs \"CallTo16%s:F1\",36,0,0," PREFIX
"CallTo16%s\n",
2162 fprintf( outfile
, "\t.globl " PREFIX
"CallTo16%s\n", name
);
2163 fprintf( outfile
, PREFIX
"CallTo16%s:\n", name
);
2165 /* Function entry sequence */
2166 fprintf( outfile
, "\tpushl %%ebp\n" );
2167 fprintf( outfile
, "\tmovl %%esp, %%ebp\n" );
2169 /* Save the 32-bit registers */
2170 fprintf( outfile
, "\tpushl %%ebx\n" );
2171 fprintf( outfile
, "\tpushl %%ecx\n" );
2172 fprintf( outfile
, "\tpushl %%edx\n" );
2173 fprintf( outfile
, "\tpushl %%esi\n" );
2174 fprintf( outfile
, "\tpushl %%edi\n" );
2178 /* Get Global Offset Table into %ebx */
2179 fprintf( outfile
, "\tcall .LCallTo16%s.getgot1\n", name
);
2180 fprintf( outfile
, ".LCallTo16%s.getgot1:\n", name
);
2181 fprintf( outfile
, "\tpopl %%ebx\n" );
2182 fprintf( outfile
, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot1], %%ebx\n", name
);
2185 /* Enter Win16 Mutex */
2187 fprintf( outfile
, "\tcall " PREFIX
"SYSLEVEL_EnterWin16Lock@PLT\n" );
2189 fprintf( outfile
, "\tcall " PREFIX
"SYSLEVEL_EnterWin16Lock\n" );
2191 /* Print debugging info */
2194 /* Push flags, number of arguments, and target */
2195 fprintf( outfile
, "\tpushl $%d\n", reg_func
);
2196 fprintf( outfile
, "\tpushl 12(%%ebp)\n" );
2197 fprintf( outfile
, "\tpushl 8(%%ebp)\n" );
2200 fprintf( outfile
, "\tcall " PREFIX
"RELAY_DebugCallTo16@PLT\n" );
2202 fprintf( outfile
, "\tcall " PREFIX
"RELAY_DebugCallTo16\n" );
2204 fprintf( outfile
, "\taddl $12, %%esp\n" );
2207 /* Get return address */
2209 fprintf( outfile
, "\tmovl " PREFIX
"CallTo16_RetAddr@GOTOFF(%%ebx), %%ecx\n" );
2211 fprintf( outfile
, "\tmovl " PREFIX
"CallTo16_RetAddr, %%ecx\n" );
2213 /* Call the actual CallTo16 routine (simulate a lcall) */
2214 fprintf( outfile
, "\tpushl %%cs\n" );
2215 fprintf( outfile
, "\tcall .LCallTo16%s\n", name
);
2217 /* Convert and push return value */
2220 fprintf( outfile
, "\tmovzwl %%ax, %%eax\n" );
2221 fprintf( outfile
, "\tpushl %%eax\n" );
2223 else if ( reg_func
!= 2 )
2225 fprintf( outfile
, "\tshll $16,%%edx\n" );
2226 fprintf( outfile
, "\tmovw %%ax,%%dx\n" );
2227 fprintf( outfile
, "\tpushl %%edx\n" );
2230 fprintf( outfile
, "\tpushl %%eax\n" );
2234 /* Get Global Offset Table into %ebx (might have been overwritten) */
2235 fprintf( outfile
, "\tcall .LCallTo16%s.getgot2\n", name
);
2236 fprintf( outfile
, ".LCallTo16%s.getgot2:\n", name
);
2237 fprintf( outfile
, "\tpopl %%ebx\n" );
2238 fprintf( outfile
, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-.LCallTo16%s.getgot2], %%ebx\n", name
);
2241 /* Print debugging info */
2245 fprintf( outfile
, "\tcall " PREFIX
"RELAY_DebugCallTo16Ret@PLT\n" );
2247 fprintf( outfile
, "\tcall " PREFIX
"RELAY_DebugCallTo16Ret\n" );
2250 /* Leave Win16 Mutex */
2252 fprintf( outfile
, "\tcall " PREFIX
"SYSLEVEL_LeaveWin16Lock@PLT\n" );
2254 fprintf( outfile
, "\tcall " PREFIX
"SYSLEVEL_LeaveWin16Lock\n" );
2256 /* Get return value */
2257 fprintf( outfile
, "\tpopl %%eax\n" );
2259 /* Restore the 32-bit registers */
2260 fprintf( outfile
, "\tpopl %%edi\n" );
2261 fprintf( outfile
, "\tpopl %%esi\n" );
2262 fprintf( outfile
, "\tpopl %%edx\n" );
2263 fprintf( outfile
, "\tpopl %%ecx\n" );
2264 fprintf( outfile
, "\tpopl %%ebx\n" );
2266 /* Function exit sequence */
2267 fprintf( outfile
, "\tpopl %%ebp\n" );
2268 fprintf( outfile
, "\tret $8\n" );
2271 /* Start of the actual CallTo16 routine */
2273 fprintf( outfile
, ".LCallTo16%s:\n", name
);
2275 /* Complete STACK32FRAME */
2276 fprintf( outfile
, "\t.byte 0x64\n\tpushl (%d)\n", STACKOFFSET
);
2277 fprintf( outfile
, "\tmovl %%esp,%%edx\n" );
2279 /* Switch to the 16-bit stack */
2281 fprintf( outfile
,"\tdata16\n");
2283 fprintf( outfile
, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET
+ 2);
2284 fprintf( outfile
, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET
);
2285 fprintf( outfile
, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET
);
2287 /* Make %bp point to the previous stackframe (built by CallFrom16) */
2288 fprintf( outfile
, "\tmovzwl %%sp,%%ebp\n" );
2289 fprintf( outfile
, "\tleal %d(%%ebp),%%ebp\n", STACK16OFFSET(bp
) );
2291 /* Add the specified offset to the new sp */
2292 fprintf( outfile
, "\tsubw %d(%%edx), %%sp\n", STACK32OFFSET(nb_args
) );
2294 /* Push the return address
2295 * With sreg suffix, we push 16:16 address (normal lret)
2296 * With lreg suffix, we push 16:32 address (0x66 lret, for KERNEL32_45)
2299 fprintf( outfile
, "\tpushl %%ecx\n" );
2302 fprintf( outfile
, "\tshldl $16, %%ecx, %%eax\n" );
2303 fprintf( outfile
, "\tpushw $0\n" );
2304 fprintf( outfile
, "\tpushw %%ax\n" );
2305 fprintf( outfile
, "\tpushw $0\n" );
2306 fprintf( outfile
, "\tpushw %%cx\n" );
2311 /* Push the called routine address */
2312 fprintf( outfile
, "\tmovl %d(%%edx),%%edx\n", STACK32OFFSET(target
) );
2313 fprintf( outfile
, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegCs
) );
2314 fprintf( outfile
, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(Eip
) );
2316 /* Get the registers */
2317 fprintf( outfile
, "\tpushw %d(%%edx)\n", CONTEXTOFFSET(SegDs
) );
2318 fprintf( outfile
, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegEs
) );
2319 fprintf( outfile
, "\tmovw %%ax,%%es\n" );
2320 fprintf( outfile
, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(SegFs
) );
2321 fprintf( outfile
, "\tmovw %%ax,%%fs\n" );
2322 fprintf( outfile
, "\tmovl %d(%%edx),%%ebp\n", CONTEXTOFFSET(Ebp
) );
2323 fprintf( outfile
, "\tmovl %d(%%edx),%%esi\n", CONTEXTOFFSET(Esi
) );
2324 fprintf( outfile
, "\tmovl %d(%%edx),%%edi\n", CONTEXTOFFSET(Edi
) );
2325 fprintf( outfile
, "\tmovl %d(%%edx),%%eax\n", CONTEXTOFFSET(Eax
) );
2326 fprintf( outfile
, "\tmovl %d(%%edx),%%ebx\n", CONTEXTOFFSET(Ebx
) );
2327 fprintf( outfile
, "\tmovl %d(%%edx),%%ecx\n", CONTEXTOFFSET(Ecx
) );
2328 fprintf( outfile
, "\tmovl %d(%%edx),%%edx\n", CONTEXTOFFSET(Edx
) );
2330 /* Get the 16-bit ds */
2331 fprintf( outfile
, "\tpopw %%ds\n" );
2333 else /* not a register function */
2335 /* Push the called routine address */
2336 fprintf( outfile
, "\tpushl %d(%%edx)\n", STACK32OFFSET(target
) );
2338 /* Set %fs to the value saved by the last CallFrom16 */
2339 fprintf( outfile
, "\tmovw %d(%%ebp),%%ax\n", STACK16OFFSET(fs
)-STACK16OFFSET(bp
) );
2340 fprintf( outfile
, "\tmovw %%ax,%%fs\n" );
2342 /* Set %ds and %es (and %ax just in case) equal to %ss */
2343 fprintf( outfile
, "\tmovw %%ss,%%ax\n" );
2344 fprintf( outfile
, "\tmovw %%ax,%%ds\n" );
2345 fprintf( outfile
, "\tmovw %%ax,%%es\n" );
2348 /* Jump to the called routine */
2349 fprintf( outfile
, "\t.byte 0x66\n" );
2350 fprintf( outfile
, "\tlret\n" );
2353 /*******************************************************************
2356 * Build the return code for 16-bit callbacks
2358 static void BuildRet16Func( FILE *outfile
)
2361 * Note: This must reside in the .data section to allow
2362 * run-time relocation of the SYSLEVEL_Win16CurrentTeb symbol
2365 fprintf( outfile
, "\n\t.globl " PREFIX
"CallTo16_Ret\n" );
2366 fprintf( outfile
, PREFIX
"CallTo16_Ret:\n" );
2368 /* Restore 32-bit segment registers */
2370 fprintf( outfile
, "\tmovw $0x%04x,%%bx\n", Data_Selector
);
2372 fprintf( outfile
, "\tdata16\n");
2374 fprintf( outfile
, "\tmovw %%bx,%%ds\n" );
2376 fprintf( outfile
, "\tdata16\n");
2378 fprintf( outfile
, "\tmovw %%bx,%%es\n" );
2380 fprintf( outfile
, "\tmovw " PREFIX
"SYSLEVEL_Win16CurrentTeb,%%fs\n" );
2382 /* Restore the 32-bit stack */
2385 fprintf( outfile
, "\tdata16\n");
2387 fprintf( outfile
, "\tmovw %%bx,%%ss\n" );
2388 fprintf( outfile
, "\t.byte 0x64\n\tmovl (%d),%%esp\n", STACKOFFSET
);
2389 fprintf( outfile
, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET
);
2391 /* Return to caller */
2393 fprintf( outfile
, "\tlret\n" );
2395 /* Declare the return address variable */
2397 fprintf( outfile
, "\n\t.globl " PREFIX
"CallTo16_RetAddr\n" );
2398 fprintf( outfile
, PREFIX
"CallTo16_RetAddr:\t.long 0\n" );
2401 /*******************************************************************
2402 * BuildCallTo32CBClient
2404 * Call a CBClient relay stub from 32-bit code (KERNEL.620).
2406 * Since the relay stub is itself 32-bit, this should not be a problem;
2407 * unfortunately, the relay stubs are expected to switch back to a
2408 * 16-bit stack (and 16-bit code) after completion :-(
2410 * This would conflict with our 16- vs. 32-bit stack handling, so
2411 * we simply switch *back* to our 32-bit stack before returning to
2414 * The CBClient relay stub expects to be called with the following
2415 * 16-bit stack layout, and with ebp and ebx pointing into the 16-bit
2416 * stack at the designated places:
2419 * (ebp+14) original arguments to the callback routine
2420 * (ebp+10) far return address to original caller
2421 * (ebp+6) Thunklet target address
2422 * (ebp+2) Thunklet relay ID code
2423 * (ebp) BP (saved by CBClientGlueSL)
2424 * (ebp-2) SI (saved by CBClientGlueSL)
2425 * (ebp-4) DI (saved by CBClientGlueSL)
2426 * (ebp-6) DS (saved by CBClientGlueSL)
2428 * ... buffer space used by the 16-bit side glue for temp copies
2430 * (ebx+4) far return address to 16-bit side glue code
2431 * (ebx) saved 16-bit ss:sp (pointing to ebx+4)
2433 * The 32-bit side glue code accesses both the original arguments (via ebp)
2434 * and the temporary copies prepared by the 16-bit side glue (via ebx).
2435 * After completion, the stub will load ss:sp from the buffer at ebx
2436 * and perform a far return to 16-bit code.
2438 * To trick the relay stub into returning to us, we replace the 16-bit
2439 * return address to the glue code by a cs:ip pair pointing to our
2440 * return entry point (the original return address is saved first).
2441 * Our return stub thus called will then reload the 32-bit ss:esp and
2442 * return to 32-bit code (by using and ss:esp value that we have also
2443 * pushed onto the 16-bit stack before and a cs:eip values found at
2444 * that position on the 32-bit stack). The ss:esp to be restored is
2445 * found relative to the 16-bit stack pointer at:
2448 * (ebx-8) sp (32-bit stack pointer)
2450 * The second variant of this routine, CALL32_CBClientEx, which is used
2451 * to implement KERNEL.621, has to cope with yet another problem: Here,
2452 * the 32-bit side directly returns to the caller of the CBClient thunklet,
2453 * restoring registers saved by CBClientGlueSL and cleaning up the stack.
2454 * As we have to return to our 32-bit code first, we have to adapt the
2455 * layout of our temporary area so as to include values for the registers
2456 * that are to be restored, and later (in the implementation of KERNEL.621)
2457 * we *really* restore them. The return stub restores DS, DI, SI, and BP
2458 * from the stack, skips the next 8 bytes (CBClient relay code / target),
2459 * and then performs a lret NN, where NN is the number of arguments to be
2460 * removed. Thus, we prepare our temporary area as follows:
2462 * (ebx+22) 16-bit cs (this segment)
2463 * (ebx+20) 16-bit ip ('16-bit' return entry point)
2464 * (ebx+16) 32-bit ss (flat)
2465 * (ebx+12) 32-bit sp (32-bit stack pointer)
2466 * (ebx+10) 16-bit bp (points to ebx+24)
2467 * (ebx+8) 16-bit si (ignored)
2468 * (ebx+6) 16-bit di (ignored)
2469 * (ebx+4) 16-bit ds (we actually use the flat DS here)
2470 * (ebx+2) 16-bit ss (16-bit stack segment)
2471 * (ebx+0) 16-bit sp (points to ebx+4)
2473 * Note that we ensure that DS is not changed and remains the flat segment,
2474 * and the 32-bit stack pointer our own return stub needs fits just
2475 * perfectly into the 8 bytes that are skipped by the Windows stub.
2476 * One problem is that we have to determine the number of removed arguments,
2477 * as these have to be really removed in KERNEL.621. Thus, the BP value
2478 * that we place in the temporary area to be restored, contains the value
2479 * that SP would have if no arguments were removed. By comparing the actual
2480 * value of SP with this value in our return stub we can compute the number
2481 * of removed arguments. This is then returned to KERNEL.621.
2483 * The stack layout of this function:
2484 * (ebp+20) nArgs pointer to variable receiving nr. of args (Ex only)
2485 * (ebp+16) esi pointer to caller's esi value
2486 * (ebp+12) arg ebp value to be set for relay stub
2487 * (ebp+8) func CBClient relay stub address
2491 static void BuildCallTo32CBClient( FILE *outfile
, BOOL isEx
)
2493 char *name
= isEx
? "CBClientEx" : "CBClient";
2494 int size
= isEx
? 24 : 12;
2496 /* Function header */
2498 fprintf( outfile
, "\n\t.align 4\n" );
2500 fprintf( outfile
, ".stabs \"CALL32_%s:F1\",36,0,0," PREFIX
"CALL32_%s\n",
2503 fprintf( outfile
, "\t.globl " PREFIX
"CALL32_%s\n", name
);
2504 fprintf( outfile
, PREFIX
"CALL32_%s:\n", name
);
2508 fprintf( outfile
, "\tpushl %%ebp\n" );
2509 fprintf( outfile
, "\tmovl %%esp,%%ebp\n" );
2510 fprintf( outfile
, "\tpushl %%edi\n" );
2511 fprintf( outfile
, "\tpushl %%esi\n" );
2512 fprintf( outfile
, "\tpushl %%ebx\n" );
2514 /* Get the 16-bit stack */
2516 fprintf( outfile
, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET
);
2518 /* Convert it to a flat address */
2520 fprintf( outfile
, "\tshldl $16,%%ebx,%%eax\n" );
2521 fprintf( outfile
, "\tandl $0xfff8,%%eax\n" );
2522 fprintf( outfile
, "\tmovl " PREFIX
"ldt_copy(%%eax),%%esi\n" );
2523 fprintf( outfile
, "\tmovw %%bx,%%ax\n" );
2524 fprintf( outfile
, "\taddl %%eax,%%esi\n" );
2526 /* Allocate temporary area (simulate STACK16_PUSH) */
2528 fprintf( outfile
, "\tpushf\n" );
2529 fprintf( outfile
, "\tcld\n" );
2530 fprintf( outfile
, "\tleal -%d(%%esi), %%edi\n", size
);
2531 fprintf( outfile
, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME
) );
2532 fprintf( outfile
, "\trep\n\tmovsb\n" );
2533 fprintf( outfile
, "\tpopf\n" );
2535 fprintf( outfile
, "\t.byte 0x64\n\tsubw $%d,(%d)\n", size
, STACKOFFSET
);
2537 fprintf( outfile
, "\tpushl %%edi\n" ); /* remember address */
2539 /* Set up temporary area */
2543 fprintf( outfile
, "\tleal 4(%%edi), %%edi\n" );
2545 fprintf( outfile
, "\tleal -8(%%esp), %%eax\n" );
2546 fprintf( outfile
, "\tmovl %%eax, -8(%%edi)\n" ); /* 32-bit sp */
2548 fprintf( outfile
, "\tmovl %%ss, %%ax\n" );
2549 fprintf( outfile
, "\tandl $0x0000ffff, %%eax\n" );
2550 fprintf( outfile
, "\tmovl %%eax, -4(%%edi)\n" ); /* 32-bit ss */
2552 fprintf( outfile
, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME
)-size
+4 + 4 );
2553 fprintf( outfile
, "\tmovl %%ebx, 0(%%edi)\n" ); /* 16-bit ss:sp */
2555 fprintf( outfile
, "\tmovl " PREFIX
"CALL32_%s_RetAddr, %%eax\n", name
);
2556 fprintf( outfile
, "\tmovl %%eax, 4(%%edi)\n" ); /* overwrite return address */
2560 fprintf( outfile
, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME
)-size
+4 );
2561 fprintf( outfile
, "\tmovl %%ebx, 0(%%edi)\n" );
2563 fprintf( outfile
, "\tmovl %%ds, %%ax\n" );
2564 fprintf( outfile
, "\tmovw %%ax, 4(%%edi)\n" );
2566 fprintf( outfile
, "\taddl $20, %%ebx\n" );
2567 fprintf( outfile
, "\tmovw %%bx, 10(%%edi)\n" );
2569 fprintf( outfile
, "\tleal -8(%%esp), %%eax\n" );
2570 fprintf( outfile
, "\tmovl %%eax, 12(%%edi)\n" );
2572 fprintf( outfile
, "\tmovl %%ss, %%ax\n" );
2573 fprintf( outfile
, "\tandl $0x0000ffff, %%eax\n" );
2574 fprintf( outfile
, "\tmovl %%eax, 16(%%edi)\n" );
2576 fprintf( outfile
, "\tmovl " PREFIX
"CALL32_%s_RetAddr, %%eax\n", name
);
2577 fprintf( outfile
, "\tmovl %%eax, 20(%%edi)\n" );
2580 /* Set up registers and call CBClient relay stub (simulating a far call) */
2582 fprintf( outfile
, "\tmovl 16(%%ebp), %%esi\n" );
2583 fprintf( outfile
, "\tmovl (%%esi), %%esi\n" );
2585 fprintf( outfile
, "\tmovl %%edi, %%ebx\n" );
2586 fprintf( outfile
, "\tmovl 8(%%ebp), %%eax\n" );
2587 fprintf( outfile
, "\tmovl 12(%%ebp), %%ebp\n" );
2589 fprintf( outfile
, "\tpushl %%cs\n" );
2590 fprintf( outfile
, "\tcall *%%eax\n" );
2592 /* Return new esi value to caller */
2594 fprintf( outfile
, "\tmovl 32(%%esp), %%edi\n" );
2595 fprintf( outfile
, "\tmovl %%esi, (%%edi)\n" );
2597 /* Cleanup temporary area (simulate STACK16_POP) */
2599 fprintf( outfile
, "\tpop %%esi\n" );
2601 fprintf( outfile
, "\tpushf\n" );
2602 fprintf( outfile
, "\tstd\n" );
2603 fprintf( outfile
, "\tdec %%esi\n" );
2604 fprintf( outfile
, "\tleal %d(%%esi), %%edi\n", size
);
2605 fprintf( outfile
, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME
) );
2606 fprintf( outfile
, "\trep\n\tmovsb\n" );
2607 fprintf( outfile
, "\tpopf\n" );
2609 fprintf( outfile
, "\t.byte 0x64\n\taddw $%d,(%d)\n", size
, STACKOFFSET
);
2611 /* Return argument size to caller */
2614 fprintf( outfile
, "\tmovl 32(%%esp), %%ebx\n" );
2615 fprintf( outfile
, "\tmovl %%ebp, (%%ebx)\n" );
2618 /* Restore registers and return */
2620 fprintf( outfile
, "\tpopl %%ebx\n" );
2621 fprintf( outfile
, "\tpopl %%esi\n" );
2622 fprintf( outfile
, "\tpopl %%edi\n" );
2623 fprintf( outfile
, "\tpopl %%ebp\n" );
2624 fprintf( outfile
, "\tret\n" );
2627 static void BuildCallTo32CBClientRet( FILE *outfile
, BOOL isEx
)
2629 char *name
= isEx
? "CBClientEx" : "CBClient";
2631 /* '16-bit' return stub */
2633 fprintf( outfile
, "\n\t.globl " PREFIX
"CALL32_%s_Ret\n", name
);
2634 fprintf( outfile
, PREFIX
"CALL32_%s_Ret:\n", name
);
2638 fprintf( outfile
, "\tmovzwl %%sp, %%ebx\n" );
2639 fprintf( outfile
, "\tlssl %%ss:-16(%%ebx), %%esp\n" );
2643 fprintf( outfile
, "\tmovzwl %%bp, %%ebx\n" );
2644 fprintf( outfile
, "\tsubw %%bp, %%sp\n" );
2645 fprintf( outfile
, "\tmovzwl %%sp, %%ebp\n" );
2646 fprintf( outfile
, "\tlssl %%ss:-12(%%ebx), %%esp\n" );
2648 fprintf( outfile
, "\tlret\n" );
2650 /* Declare the return address variable */
2652 fprintf( outfile
, "\n\t.globl " PREFIX
"CALL32_%s_RetAddr\n", name
);
2653 fprintf( outfile
, PREFIX
"CALL32_%s_RetAddr:\t.long 0\n", name
);
2657 /*******************************************************************
2658 * BuildCallTo32LargeStack
2660 * Build the function used to switch to the original 32-bit stack
2661 * before calling a 32-bit function from 32-bit code. This is used for
2662 * functions that need a large stack, like X bitmaps functions.
2664 * The generated function has the following prototype:
2665 * int xxx( int (*func)(), void *arg );
2667 * The pointer to the function can be retrieved by calling CALL32_Init,
2668 * which also takes care of saving the current 32-bit stack pointer.
2669 * Furthermore, CALL32_Init switches to a new stack and jumps to the
2670 * specified target address.
2672 * NOTE: The CALL32_LargeStack routine may be recursively entered by the
2673 * same thread, but not concurrently entered by several threads.
2675 * Stack layout of CALL32_Init:
2677 * (esp+12) new stack address
2678 * (esp+8) target address
2679 * (esp+4) pointer to variable to receive CALL32_LargeStack address
2682 * Stack layout of CALL32_LargeStack:
2689 static void BuildCallTo32LargeStack( FILE *outfile
)
2691 /* Initialization function */
2693 fprintf( outfile
, "\n\t.align 4\n" );
2695 fprintf( outfile
, ".stabs \"CALL32_Init:F1\",36,0,0," PREFIX
"CALL32_Init\n");
2697 fprintf( outfile
, "\t.globl " PREFIX
"CALL32_Init\n" );
2698 fprintf( outfile
, "\t.type " PREFIX
"CALL32_Init,@function\n" );
2699 fprintf( outfile
, PREFIX
"CALL32_Init:\n" );
2700 fprintf( outfile
, "\tmovl %%esp,CALL32_Original32_esp\n" );
2701 fprintf( outfile
, "\tpopl %%eax\n" );
2702 fprintf( outfile
, "\tpopl %%eax\n" );
2703 fprintf( outfile
, "\tmovl $CALL32_LargeStack,(%%eax)\n" );
2704 fprintf( outfile
, "\tpopl %%eax\n" );
2705 fprintf( outfile
, "\tpopl %%esp\n" );
2706 fprintf( outfile
, "\tpushl %%eax\n" );
2707 fprintf( outfile
, "\tret\n" );
2709 /* Function header */
2711 fprintf( outfile
, "\n\t.align 4\n" );
2713 fprintf( outfile
, ".stabs \"CALL32_LargeStack:F1\",36,0,0,CALL32_LargeStack\n");
2715 fprintf( outfile
, "CALL32_LargeStack:\n" );
2719 fprintf( outfile
, "\tpushl %%ebp\n" );
2720 fprintf( outfile
, "\tmovl %%esp,%%ebp\n" );
2722 /* Switch to the original 32-bit stack pointer */
2724 fprintf( outfile
, "\tcmpl $0, CALL32_RecursionCount\n" );
2725 fprintf( outfile
, "\tjne CALL32_skip\n" );
2726 fprintf( outfile
, "\tmovl CALL32_Original32_esp, %%esp\n" );
2727 fprintf( outfile
, "CALL32_skip:\n" );
2729 fprintf( outfile
, "\tincl CALL32_RecursionCount\n" );
2731 /* Transfer the argument and call the function */
2733 fprintf( outfile
, "\tpushl 12(%%ebp)\n" );
2734 fprintf( outfile
, "\tcall *8(%%ebp)\n" );
2736 /* Restore registers and return */
2738 fprintf( outfile
, "\tdecl CALL32_RecursionCount\n" );
2740 fprintf( outfile
, "\tmovl %%ebp,%%esp\n" );
2741 fprintf( outfile
, "\tpopl %%ebp\n" );
2742 fprintf( outfile
, "\tret\n" );
2746 fprintf( outfile
, "\t.data\n" );
2747 fprintf( outfile
, "CALL32_Original32_esp:\t.long 0\n" );
2748 fprintf( outfile
, "CALL32_RecursionCount:\t.long 0\n" );
2749 fprintf( outfile
, "\t.text\n" );
2753 /*******************************************************************
2754 * BuildCallFrom32Regs
2756 * Build a 32-bit-to-Wine call-back function for a 'register' function.
2757 * 'args' is the number of dword arguments.
2761 * (ebp+12) first arg
2762 * (ebp+8) ret addr to user code
2763 * (ebp+4) ret addr to relay code
2765 * (ebp-128) buffer area to allow stack frame manipulation
2766 * (ebp-332) CONTEXT86 struct
2767 * (ebp-336) CONTEXT86 *argument
2768 * .... other arguments copied from (ebp+12)
2770 * The entry point routine is called with a CONTEXT* extra argument,
2771 * following the normal args. In this context structure, EIP_reg
2772 * contains the return address to user code, and ESP_reg the stack
2773 * pointer on return (with the return address and arguments already
2776 static void BuildCallFrom32Regs( FILE *outfile
)
2778 static const int STACK_SPACE
= 128 + sizeof(CONTEXT86
);
2780 /* Function header */
2782 fprintf( outfile
, "\n\t.align 4\n" );
2784 fprintf( outfile
, ".stabs \"CALL32_Regs:F1\",36,0,0," PREFIX
"CALL32_Regs\n" );
2786 fprintf( outfile
, "\t.globl " PREFIX
"CALL32_Regs\n" );
2787 fprintf( outfile
, PREFIX
"CALL32_Regs:\n" );
2789 /* Allocate some buffer space on the stack */
2791 fprintf( outfile
, "\tpushl %%ebp\n" );
2792 fprintf( outfile
, "\tmovl %%esp,%%ebp\n ");
2793 fprintf( outfile
, "\tleal -%d(%%esp), %%esp\n", STACK_SPACE
);
2795 /* Build the context structure */
2797 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eax
) - STACK_SPACE
);
2798 fprintf( outfile
, "\tpushfl\n" );
2799 fprintf( outfile
, "\tpopl %%eax\n" );
2800 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(EFlags
) - STACK_SPACE
);
2801 fprintf( outfile
, "\tmovl 0(%%ebp),%%eax\n" );
2802 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Ebp
) - STACK_SPACE
);
2803 fprintf( outfile
, "\tmovl %%ebx,%d(%%ebp)\n", CONTEXTOFFSET(Ebx
) - STACK_SPACE
);
2804 fprintf( outfile
, "\tmovl %%ecx,%d(%%ebp)\n", CONTEXTOFFSET(Ecx
) - STACK_SPACE
);
2805 fprintf( outfile
, "\tmovl %%edx,%d(%%ebp)\n", CONTEXTOFFSET(Edx
) - STACK_SPACE
);
2806 fprintf( outfile
, "\tmovl %%esi,%d(%%ebp)\n", CONTEXTOFFSET(Esi
) - STACK_SPACE
);
2807 fprintf( outfile
, "\tmovl %%edi,%d(%%ebp)\n", CONTEXTOFFSET(Edi
) - STACK_SPACE
);
2809 fprintf( outfile
, "\txorl %%eax,%%eax\n" );
2810 fprintf( outfile
, "\tmovw %%cs,%%ax\n" );
2811 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegCs
) - STACK_SPACE
);
2812 fprintf( outfile
, "\tmovw %%es,%%ax\n" );
2813 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegEs
) - STACK_SPACE
);
2814 fprintf( outfile
, "\tmovw %%fs,%%ax\n" );
2815 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegFs
) - STACK_SPACE
);
2816 fprintf( outfile
, "\tmovw %%gs,%%ax\n" );
2817 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegGs
) - STACK_SPACE
);
2818 fprintf( outfile
, "\tmovw %%ss,%%ax\n" );
2819 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegSs
) - STACK_SPACE
);
2820 fprintf( outfile
, "\tmovw %%ds,%%ax\n" );
2821 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegDs
) - STACK_SPACE
);
2822 fprintf( outfile
, "\tmovw %%ax,%%es\n" ); /* set %es equal to %ds just in case */
2824 fprintf( outfile
, "\tmovl $0x%x,%%eax\n", CONTEXT86_FULL
);
2825 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(ContextFlags
) - STACK_SPACE
);
2827 fprintf( outfile
, "\tmovl 8(%%ebp),%%eax\n" ); /* Get %eip at time of call */
2828 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eip
) - STACK_SPACE
);
2830 /* Transfer the arguments */
2832 fprintf( outfile
, "\tmovl 4(%%ebp),%%ebx\n" ); /* get relay code addr */
2833 fprintf( outfile
, "\tpushl %%esp\n" ); /* push ptr to context struct */
2834 fprintf( outfile
, "\tmovzbl 4(%%ebx),%%ecx\n" ); /* fetch number of args to copy */
2835 fprintf( outfile
, "\tjecxz 1f\n" );
2836 fprintf( outfile
, "\tsubl %%ecx,%%esp\n" );
2837 fprintf( outfile
, "\tleal 12(%%ebp),%%esi\n" ); /* get %esp at time of call */
2838 fprintf( outfile
, "\tmovl %%esp,%%edi\n" );
2839 fprintf( outfile
, "\tshrl $2,%%ecx\n" );
2840 fprintf( outfile
, "\tcld\n" );
2841 fprintf( outfile
, "\trep\n\tmovsl\n" ); /* copy args */
2843 fprintf( outfile
, "1:\tmovzbl 5(%%ebx),%%eax\n" ); /* fetch number of args to remove */
2844 fprintf( outfile
, "\tleal 12(%%ebp,%%eax),%%eax\n" );
2845 fprintf( outfile
, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Esp
) - STACK_SPACE
);
2847 /* Call the entry point */
2849 fprintf( outfile
, "\tcall *0(%%ebx)\n" );
2851 /* Store %eip and %ebp onto the new stack */
2853 fprintf( outfile
, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Esp
) - STACK_SPACE
);
2854 fprintf( outfile
, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eip
) - STACK_SPACE
);
2855 fprintf( outfile
, "\tmovl %%eax,-4(%%edx)\n" );
2856 fprintf( outfile
, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Ebp
) - STACK_SPACE
);
2857 fprintf( outfile
, "\tmovl %%eax,-8(%%edx)\n" );
2859 /* Restore the context structure */
2861 /* Note: we don't bother to restore %cs, %ds and %ss
2862 * changing them in 32-bit code is a recipe for disaster anyway
2864 fprintf( outfile
, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegEs
) - STACK_SPACE
);
2865 fprintf( outfile
, "\tmovw %%ax,%%es\n" );
2866 fprintf( outfile
, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegFs
) - STACK_SPACE
);
2867 fprintf( outfile
, "\tmovw %%ax,%%fs\n" );
2868 fprintf( outfile
, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegGs
) - STACK_SPACE
);
2869 fprintf( outfile
, "\tmovw %%ax,%%gs\n" );
2871 fprintf( outfile
, "\tmovl %d(%%ebp),%%edi\n", CONTEXTOFFSET(Edi
) - STACK_SPACE
);
2872 fprintf( outfile
, "\tmovl %d(%%ebp),%%esi\n", CONTEXTOFFSET(Esi
) - STACK_SPACE
);
2873 fprintf( outfile
, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Edx
) - STACK_SPACE
);
2874 fprintf( outfile
, "\tmovl %d(%%ebp),%%ecx\n", CONTEXTOFFSET(Ecx
) - STACK_SPACE
);
2875 fprintf( outfile
, "\tmovl %d(%%ebp),%%ebx\n", CONTEXTOFFSET(Ebx
) - STACK_SPACE
);
2877 fprintf( outfile
, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(EFlags
) - STACK_SPACE
);
2878 fprintf( outfile
, "\tpushl %%eax\n" );
2879 fprintf( outfile
, "\tpopfl\n" );
2880 fprintf( outfile
, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eax
) - STACK_SPACE
);
2882 fprintf( outfile
, "\tmovl %d(%%ebp),%%ebp\n", CONTEXTOFFSET(Esp
) - STACK_SPACE
);
2883 fprintf( outfile
, "\tleal -8(%%ebp),%%esp\n" );
2884 fprintf( outfile
, "\tpopl %%ebp\n" );
2885 fprintf( outfile
, "\tret\n" );
2889 /*******************************************************************
2892 * Build the spec files
2894 static int BuildSpec( FILE *outfile
, int argc
, char *argv
[] )
2897 for (i
= 2; i
< argc
; i
++)
2898 if (BuildSpecFile( outfile
, argv
[i
] ) < 0) return -1;
2902 /*******************************************************************
2905 * Build the 16-bit-to-Wine/Wine-to-16-bit callback glue code
2907 static int BuildGlue( FILE *outfile
, char * outname
, int argc
, char *argv
[] )
2914 infile
= fopen( argv
[2], "r" );
2921 else infile
= stdin
;
2925 fprintf( outfile
, "/* File generated automatically from %s; do not edit! */\n\n",
2926 argc
> 2? argv
[2] : "<stdin>" );
2927 fprintf( outfile
, "#include \"builtin16.h\"\n" );
2928 fprintf( outfile
, "#include \"stackframe.h\"\n\n" );
2930 /* Build the callback glue functions */
2932 while (fgets( buffer
, sizeof(buffer
), infile
))
2934 if (strstr( buffer
, "### start build ###" )) break;
2936 while (fgets( buffer
, sizeof(buffer
), infile
))
2939 if ( (p
= strstr( buffer
, "CallFrom16_" )) != NULL
)
2941 char *q
, *profile
= p
+ strlen( "CallFrom16_" );
2942 for (q
= profile
; (*q
== '_') || isalpha(*q
); q
++ )
2945 for (q
= p
-1; q
> buffer
&& ((*q
== '_') || isalnum(*q
)); q
-- )
2947 if ( ++q
< p
) p
[-1] = '\0'; else q
= "";
2948 BuildCallFrom16Func( outfile
, profile
, q
, FALSE
);
2950 if ( (p
= strstr( buffer
, "CallTo16_" )) != NULL
)
2952 char *q
, *profile
= p
+ strlen( "CallTo16_" );
2953 for (q
= profile
; (*q
== '_') || isalpha(*q
); q
++ )
2956 for (q
= p
-1; q
> buffer
&& ((*q
== '_') || isalnum(*q
)); q
-- )
2958 if ( ++q
< p
) p
[-1] = '\0'; else q
= "";
2959 BuildCallTo16Func( outfile
, profile
, q
);
2961 if (strstr( buffer
, "### stop build ###" )) break;
2968 /*******************************************************************
2971 * Build the 16-bit callbacks
2973 static int BuildCall16( FILE *outfile
, char * outname
)
2981 fprintf( outfile
, "/* File generated automatically. Do not edit! */\n\n" );
2982 fprintf( outfile
, "\t.text\n" );
2987 fprintf( outfile
, "\t.file\t\"%s\"\n", outname
);
2988 getcwd(buffer
, sizeof(buffer
));
2991 * The stabs help the internal debugger as they are an indication that it
2992 * is sensible to step into a thunk/trampoline.
2994 fprintf( outfile
, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer
);
2995 fprintf( outfile
, ".stabs \"%s\",100,0,0,Code_Start\n", outname
);
2996 fprintf( outfile
, "\t.text\n" );
2997 fprintf( outfile
, "\t.align 4\n" );
2998 fprintf( outfile
, "Code_Start:\n\n" );
3000 fprintf( outfile
, PREFIX
"Call16_Start:\n" );
3001 fprintf( outfile
, "\t.globl "PREFIX
"Call16_Start\n" );
3002 fprintf( outfile
, "\t.byte 0\n\n" );
3005 /* Standard CallFrom16 routine (WORD return) */
3006 BuildCallFrom16Core( outfile
, FALSE
, FALSE
, TRUE
);
3008 /* Standard CallFrom16 routine (DWORD return) */
3009 BuildCallFrom16Core( outfile
, FALSE
, FALSE
, FALSE
);
3011 /* Register CallFrom16 routine */
3012 BuildCallFrom16Core( outfile
, TRUE
, FALSE
, FALSE
);
3014 /* C16ThkSL CallFrom16 routine */
3015 BuildCallFrom16Core( outfile
, FALSE
, TRUE
, FALSE
);
3017 /* Standard CallTo16 routine (WORD return) */
3018 BuildCallTo16Core( outfile
, TRUE
, FALSE
);
3020 /* Standard CallTo16 routine (DWORD return) */
3021 BuildCallTo16Core( outfile
, FALSE
, FALSE
);
3023 /* Register CallTo16 routine (16:16 retf) */
3024 BuildCallTo16Core( outfile
, FALSE
, 1 );
3026 /* Register CallTo16 routine (16:32 retf) */
3027 BuildCallTo16Core( outfile
, FALSE
, 2 );
3029 /* CBClientThunkSL routine */
3030 BuildCallTo32CBClient( outfile
, FALSE
);
3032 /* CBClientThunkSLEx routine */
3033 BuildCallTo32CBClient( outfile
, TRUE
);
3035 fprintf( outfile
, PREFIX
"Call16_End:\n" );
3036 fprintf( outfile
, "\t.globl "PREFIX
"Call16_End\n" );
3039 fprintf( outfile
, "\t.stabs \"\",100,0,0,.Letext\n");
3040 fprintf( outfile
, ".Letext:\n");
3043 /* The whole Call16_Ret segment must lie within the .data section */
3044 fprintf( outfile
, "\n\t.data\n" );
3045 fprintf( outfile
, "\t.globl " PREFIX
"Call16_Ret_Start\n" );
3046 fprintf( outfile
, PREFIX
"Call16_Ret_Start:\n" );
3048 /* Standard CallTo16 return stub */
3049 BuildRet16Func( outfile
);
3051 /* CBClientThunkSL return stub */
3052 BuildCallTo32CBClientRet( outfile
, FALSE
);
3054 /* CBClientThunkSLEx return stub */
3055 BuildCallTo32CBClientRet( outfile
, TRUE
);
3057 /* End of Call16_Ret segment */
3058 fprintf( outfile
, "\n\t.globl " PREFIX
"Call16_Ret_End\n" );
3059 fprintf( outfile
, PREFIX
"Call16_Ret_End:\n" );
3061 #else /* __i386__ */
3063 fprintf( outfile
, PREFIX
"Call16_Start:\n" );
3064 fprintf( outfile
, "\t.globl "PREFIX
"Call16_Start\n" );
3065 fprintf( outfile
, "\t.byte 0\n\n" );
3066 fprintf( outfile
, PREFIX
"Call16_End:\n" );
3067 fprintf( outfile
, "\t.globl "PREFIX
"Call16_End\n" );
3069 fprintf( outfile
, "\t.globl " PREFIX
"Call16_Ret_Start\n" );
3070 fprintf( outfile
, PREFIX
"Call16_Ret_Start:\n" );
3071 fprintf( outfile
, "\t.byte 0\n\n" );
3072 fprintf( outfile
, "\n\t.globl " PREFIX
"Call16_Ret_End\n" );
3073 fprintf( outfile
, PREFIX
"Call16_Ret_End:\n" );
3075 #endif /* __i386__ */
3080 /*******************************************************************
3083 * Build the 32-bit callbacks
3085 static int BuildCall32( FILE *outfile
, char * outname
)
3093 fprintf( outfile
, "/* File generated automatically. Do not edit! */\n\n" );
3094 fprintf( outfile
, "\t.text\n" );
3099 fprintf( outfile
, "\t.file\t\"%s\"\n", outname
);
3100 getcwd(buffer
, sizeof(buffer
));
3103 * The stabs help the internal debugger as they are an indication that it
3104 * is sensible to step into a thunk/trampoline.
3106 fprintf( outfile
, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer
);
3107 fprintf( outfile
, ".stabs \"%s\",100,0,0,Code_Start\n", outname
);
3108 fprintf( outfile
, "\t.text\n" );
3109 fprintf( outfile
, "\t.align 4\n" );
3110 fprintf( outfile
, "Code_Start:\n" );
3113 /* Build the 32-bit large stack callback */
3115 BuildCallTo32LargeStack( outfile
);
3117 /* Build the register callback function */
3119 BuildCallFrom32Regs( outfile
);
3122 fprintf( outfile
, "\t.text\n");
3123 fprintf( outfile
, "\t.stabs \"\",100,0,0,.Letext\n");
3124 fprintf( outfile
, ".Letext:\n");
3127 #else /* __i386__ */
3129 /* Just to avoid an empty file */
3130 fprintf( outfile
, "\t.long 0\n" );
3132 #endif /* __i386__ */
3137 /*******************************************************************
3140 static void usage(void)
3143 "usage: build [-pic] [-o outfile] -spec SPECNAMES\n"
3144 " build [-pic] [-o outfile] -glue SOURCE_FILE\n"
3145 " build [-pic] [-o outfile] -call16\n"
3146 " build [-pic] [-o outfile] -call32\n" );
3151 /*******************************************************************
3154 int main(int argc
, char **argv
)
3156 char *outname
= NULL
;
3157 FILE *outfile
= stdout
;
3160 if (argc
< 2) usage();
3162 if (!strcmp( argv
[1], "-pic" ))
3167 if (argc
< 2) usage();
3170 if (!strcmp( argv
[1], "-o" ))
3175 if (argc
< 2) usage();
3176 if (!(outfile
= fopen( outname
, "w" )))
3178 fprintf( stderr
, "Unable to create output file '%s'\n", outname
);
3183 /* Retrieve the selector values; this assumes that we are building
3184 * the asm files on the platform that will also run them. Probably
3185 * a safe assumption to make.
3187 GET_CS( Code_Selector
);
3188 GET_DS( Data_Selector
);
3190 if (!strcmp( argv
[1], "-spec" ))
3191 res
= BuildSpec( outfile
, argc
, argv
);
3192 else if (!strcmp( argv
[1], "-glue" ))
3193 res
= BuildGlue( outfile
, outname
, argc
, argv
);
3194 else if (!strcmp( argv
[1], "-call16" ))
3195 res
= BuildCall16( outfile
, outname
);
3196 else if (!strcmp( argv
[1], "-call32" ))
3197 res
= BuildCall32( outfile
, outname
);