/* * 16-bit spec files * * Copyright 1993 Robert J. Amstadt * Copyright 1995 Martin von Loewis * Copyright 1995, 1996, 1997 Alexandre Julliard * Copyright 1997 Eric Youngdale * Copyright 1999 Ulrich Weigand */ #include #include #include "builtin16.h" #include "module.h" #include "neexe.h" #include "stackframe.h" #include "build.h" /******************************************************************* * StoreVariableCode * * Store a list of ints into a byte array. */ static int StoreVariableCode( unsigned char *buffer, int size, ORDDEF *odp ) { int i; switch(size) { case 1: for (i = 0; i < odp->u.var.n_values; i++) buffer[i] = odp->u.var.values[i]; break; case 2: for (i = 0; i < odp->u.var.n_values; i++) ((unsigned short *)buffer)[i] = odp->u.var.values[i]; break; case 4: for (i = 0; i < odp->u.var.n_values; i++) ((unsigned int *)buffer)[i] = odp->u.var.values[i]; break; } return odp->u.var.n_values * size; } /******************************************************************* * BuildModule16 * * Build the in-memory representation of a 16-bit NE module, and dump it * as a byte stream into the assembly code. */ static int BuildModule16( FILE *outfile, int max_code_offset, int max_data_offset ) { int i; char *buffer; NE_MODULE *pModule; SEGTABLEENTRY *pSegment; OFSTRUCT *pFileInfo; BYTE *pstr; WORD *pword; ET_BUNDLE *bundle = 0; ET_ENTRY *entry = 0; /* Module layout: * NE_MODULE Module * OFSTRUCT File information * SEGTABLEENTRY Segment 1 (code) * SEGTABLEENTRY Segment 2 (data) * WORD[2] Resource table (empty) * BYTE[2] Imported names (empty) * BYTE[n] Resident names table * BYTE[n] Entry table */ buffer = xmalloc( 0x10000 ); pModule = (NE_MODULE *)buffer; memset( pModule, 0, sizeof(*pModule) ); pModule->magic = IMAGE_OS2_SIGNATURE; pModule->count = 1; pModule->next = 0; pModule->flags = NE_FFLAGS_SINGLEDATA | NE_FFLAGS_BUILTIN | NE_FFLAGS_LIBMODULE; pModule->dgroup = 2; pModule->heap_size = DLLHeapSize; pModule->stack_size = 0; pModule->ip = 0; pModule->cs = 0; pModule->sp = 0; pModule->ss = 0; pModule->seg_count = 2; pModule->modref_count = 0; pModule->nrname_size = 0; pModule->modref_table = 0; pModule->nrname_fpos = 0; pModule->moveable_entries = 0; pModule->alignment = 0; pModule->truetype = 0; pModule->os_flags = NE_OSFLAGS_WINDOWS; pModule->misc_flags = 0; pModule->dlls_to_init = 0; pModule->nrname_handle = 0; pModule->min_swap_area = 0; pModule->expected_version = 0; pModule->module32 = 0; pModule->self = 0; pModule->self_loading_sel = 0; /* File information */ pFileInfo = (OFSTRUCT *)(pModule + 1); pModule->fileinfo = (int)pFileInfo - (int)pModule; memset( pFileInfo, 0, sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) ); pFileInfo->cBytes = sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) + strlen(DLLFileName); strcpy( pFileInfo->szPathName, DLLFileName ); pstr = (char *)pFileInfo + pFileInfo->cBytes + 1; #ifdef __i386__ /* FIXME: Alignment problems! */ /* Segment table */ pSegment = (SEGTABLEENTRY *)pstr; pModule->seg_table = (int)pSegment - (int)pModule; pSegment->filepos = 0; pSegment->size = max_code_offset; pSegment->flags = 0; pSegment->minsize = max_code_offset; pSegment->hSeg = 0; pSegment++; pModule->dgroup_entry = (int)pSegment - (int)pModule; pSegment->filepos = 0; pSegment->size = max_data_offset; pSegment->flags = NE_SEGFLAGS_DATA; pSegment->minsize = max_data_offset; pSegment->hSeg = 0; pSegment++; /* Resource table */ pword = (WORD *)pSegment; pModule->res_table = (int)pword - (int)pModule; *pword++ = 0; *pword++ = 0; /* Imported names table */ pstr = (char *)pword; pModule->import_table = (int)pstr - (int)pModule; *pstr++ = 0; *pstr++ = 0; /* Resident names table */ pModule->name_table = (int)pstr - (int)pModule; /* First entry is module name */ *pstr = strlen(DLLName ); strcpy( pstr + 1, DLLName ); pstr += *pstr + 1; *(WORD *)pstr = 0; pstr += sizeof(WORD); /* Store all ordinals */ for (i = 1; i <= Limit; i++) { ORDDEF *odp = Ordinals[i]; if (!odp || !odp->name[0]) continue; *pstr = strlen( odp->name ); strcpy( pstr + 1, odp->name ); strupper( pstr + 1 ); pstr += *pstr + 1; *(WORD *)pstr = i; pstr += sizeof(WORD); } *pstr++ = 0; /* Entry table */ pModule->entry_table = (int)pstr - (int)pModule; for (i = 1; i <= Limit; i++) { int selector = 0; ORDDEF *odp = Ordinals[i]; if (!odp) continue; switch (odp->type) { case TYPE_CDECL: case TYPE_PASCAL: case TYPE_PASCAL_16: case TYPE_REGISTER: case TYPE_INTERRUPT: case TYPE_STUB: selector = 1; /* Code selector */ break; case TYPE_BYTE: case TYPE_WORD: case TYPE_LONG: selector = 2; /* Data selector */ break; case TYPE_ABS: selector = 0xfe; /* Constant selector */ break; default: selector = 0; /* Invalid selector */ break; } if ( !selector ) continue; if ( bundle && bundle->last+1 == i ) bundle->last++; else { if ( bundle ) bundle->next = (char *)pstr - (char *)pModule; bundle = (ET_BUNDLE *)pstr; bundle->first = i-1; bundle->last = i; bundle->next = 0; pstr += sizeof(ET_BUNDLE); } /* FIXME: is this really correct ?? */ entry = (ET_ENTRY *)pstr; entry->type = 0xff; /* movable */ entry->flags = 3; /* exported & public data */ entry->segnum = selector; entry->offs = odp->offset; pstr += sizeof(ET_ENTRY); } *pstr++ = 0; #endif /* Dump the module content */ dump_bytes( outfile, (char *)pModule, (int)pstr - (int)pModule, "Module" ); return (int)pstr - (int)pModule; } /******************************************************************* * BuildCallFrom16Func * * Build a 16-bit-to-Wine callback glue function. * * The generated routines are intended to be used as argument conversion * routines to be called by the CallFrom16... core. Thus, the prototypes of * the generated routines are (see also CallFrom16): * * extern WORD WINAPI PREFIX_CallFrom16_C_word_xxx( FARPROC func, LPBYTE args ); * extern LONG WINAPI PREFIX_CallFrom16_C_long_xxx( FARPROC func, LPBYTE args ); * extern void WINAPI PREFIX_CallFrom16_C_regs_xxx( FARPROC func, LPBYTE args, * CONTEXT86 *context ); * extern void WINAPI PREFIX_CallFrom16_C_intr_xxx( FARPROC func, LPBYTE args, * CONTEXT86 *context ); * * where 'C' is the calling convention ('p' for pascal or 'c' for cdecl), * and each 'x' is an argument ('w'=word, 's'=signed word, 'l'=long, * 'p'=linear pointer, 't'=linear pointer to null-terminated string, * 'T'=segmented pointer to null-terminated string). * * The generated routines fetch the arguments from the 16-bit stack (pointed * to by 'args'); the offsets of the single argument values are computed * according to the calling convention and the argument types. Then, the * 32-bit entry point is called with these arguments. * * For register functions, the arguments (if present) are converted just * the same as for normal functions, but in addition the CONTEXT86 pointer * filled with the current register values is passed to the 32-bit routine. * (An 'intr' interrupt handler routine is treated exactly like a register * routine, except that upon return, the flags word pushed onto the stack * by the interrupt is removed by the 16-bit call stub.) * */ static void BuildCallFrom16Func( FILE *outfile, char *profile, char *prefix, int local ) { int i, pos, argsize = 0; int short_ret = 0; int reg_func = 0; int usecdecl = 0; char *args = profile + 7; char *ret_type; /* Parse function type */ if (!strncmp( "c_", profile, 2 )) usecdecl = 1; else if (strncmp( "p_", profile, 2 )) { fprintf( stderr, "Invalid function name '%s', ignored\n", profile ); return; } if (!strncmp( "word_", profile + 2, 5 )) short_ret = 1; else if (!strncmp( "regs_", profile + 2, 5 )) reg_func = 1; else if (!strncmp( "intr_", profile + 2, 5 )) reg_func = 2; else if (strncmp( "long_", profile + 2, 5 )) { fprintf( stderr, "Invalid function name '%s', ignored\n", profile ); return; } for ( i = 0; args[i]; i++ ) switch ( args[i] ) { case 'w': /* word */ case 's': /* s_word */ argsize += 2; break; case 'l': /* long or segmented pointer */ case 'T': /* segmented pointer to null-terminated string */ case 'p': /* linear pointer */ case 't': /* linear pointer to null-terminated string */ argsize += 4; break; } ret_type = reg_func? "void" : short_ret? "WORD" : "LONG"; fprintf( outfile, "typedef %s WINAPI (*proc_%s_t)( ", ret_type, profile ); args = profile + 7; for ( i = 0; args[i]; i++ ) { if ( i ) fprintf( outfile, ", " ); switch (args[i]) { case 'w': fprintf( outfile, "WORD" ); break; case 's': fprintf( outfile, "INT16" ); break; case 'l': case 'T': fprintf( outfile, "LONG" ); break; case 'p': case 't': fprintf( outfile, "LPVOID" ); break; } } if ( reg_func ) fprintf( outfile, "%sstruct _CONTEXT86 *", i? ", " : "" ); else if ( !i ) fprintf( outfile, "void" ); fprintf( outfile, " );\n" ); fprintf( outfile, "%s%s WINAPI %s_CallFrom16_%s( FARPROC proc, LPBYTE args%s )\n{\n", local? "static " : "", ret_type, prefix, profile, reg_func? ", struct _CONTEXT86 *context" : "" ); fprintf( outfile, " %s((proc_%s_t) proc) (\n", reg_func? "" : "return ", profile ); args = profile + 7; pos = !usecdecl? argsize : 0; for ( i = 0; args[i]; i++ ) { if ( i ) fprintf( outfile, ",\n" ); fprintf( outfile, " " ); switch (args[i]) { case 'w': /* word */ if ( !usecdecl ) pos -= 2; fprintf( outfile, "*(WORD *)(args+%d)", pos ); if ( usecdecl ) pos += 2; break; case 's': /* s_word */ if ( !usecdecl ) pos -= 2; fprintf( outfile, "*(INT16 *)(args+%d)", pos ); if ( usecdecl ) pos += 2; break; case 'l': /* long or segmented pointer */ case 'T': /* segmented pointer to null-terminated string */ if ( !usecdecl ) pos -= 4; fprintf( outfile, "*(LONG *)(args+%d)", pos ); if ( usecdecl ) pos += 4; break; case 'p': /* linear pointer */ case 't': /* linear pointer to null-terminated string */ if ( !usecdecl ) pos -= 4; fprintf( outfile, "PTR_SEG_TO_LIN( *(SEGPTR *)(args+%d) )", pos ); if ( usecdecl ) pos += 4; break; default: fprintf( stderr, "Unknown arg type '%c'\n", args[i] ); } } if ( reg_func ) fprintf( outfile, "%s context", i? ",\n" : "" ); fprintf( outfile, " );\n}\n\n" ); } /******************************************************************* * BuildCallTo16Func * * Build a Wine-to-16-bit callback glue function. * * Prototypes for the CallTo16 functions: * extern WORD CALLBACK PREFIX_CallTo16_word_xxx( FARPROC16 func, args... ); * extern LONG CALLBACK PREFIX_CallTo16_long_xxx( FARPROC16 func, args... ); * * These routines are provided solely for convenience; they simply * write the arguments onto the 16-bit stack, and call the appropriate * CallTo16... core routine. * * If you have more sophisticated argument conversion requirements than * are provided by these routines, you might as well call the core * routines by yourself. * */ static void BuildCallTo16Func( FILE *outfile, char *profile, char *prefix ) { char *args = profile + 5; int i, argsize = 0, short_ret = 0; if (!strncmp( "word_", profile, 5 )) short_ret = 1; else if (strncmp( "long_", profile, 5 )) { fprintf( stderr, "Invalid function name '%s'.\n", profile ); exit(1); } fprintf( outfile, "%s %s_CallTo16_%s( FARPROC16 proc", short_ret? "WORD" : "LONG", prefix, profile ); args = profile + 5; for ( i = 0; args[i]; i++ ) { fprintf( outfile, ", " ); switch (args[i]) { case 'w': fprintf( outfile, "WORD" ); argsize += 2; break; case 'l': fprintf( outfile, "LONG" ); argsize += 4; break; } fprintf( outfile, " arg%d", i+1 ); } fprintf( outfile, " )\n{\n" ); if ( argsize > 0 ) fprintf( outfile, " LPBYTE args = (LPBYTE)CURRENT_STACK16;\n" ); args = profile + 5; for ( i = 0; args[i]; i++ ) { switch (args[i]) { case 'w': fprintf( outfile, " args -= sizeof(WORD); *(WORD" ); break; case 'l': fprintf( outfile, " args -= sizeof(LONG); *(LONG" ); break; default: fprintf( stderr, "Unexpected case '%c' in BuildCallTo16Func\n", args[i] ); } fprintf( outfile, " *)args = arg%d;\n", i+1 ); } fprintf( outfile, " return CallTo16%s( proc, %d );\n}\n\n", short_ret? "Word" : "Long", argsize ); } /******************************************************************* * Spec16TypeCompare */ static int Spec16TypeCompare( const void *e1, const void *e2 ) { const ORDDEF *odp1 = *(const ORDDEF **)e1; const ORDDEF *odp2 = *(const ORDDEF **)e2; int type1 = (odp1->type == TYPE_CDECL) ? 0 : (odp1->type == TYPE_REGISTER) ? 3 : (odp1->type == TYPE_INTERRUPT) ? 4 : (odp1->type == TYPE_PASCAL_16) ? 1 : 2; int type2 = (odp2->type == TYPE_CDECL) ? 0 : (odp2->type == TYPE_REGISTER) ? 3 : (odp2->type == TYPE_INTERRUPT) ? 4 : (odp2->type == TYPE_PASCAL_16) ? 1 : 2; int retval = type1 - type2; if ( !retval ) retval = strcmp( odp1->u.func.arg_types, odp2->u.func.arg_types ); return retval; } /******************************************************************* * BuildSpec16File * * Build a Win16 assembly file from a spec file. */ void BuildSpec16File( FILE *outfile ) { ORDDEF **type, **typelist; int i, nFuncs, nTypes; int code_offset, data_offset, module_size; unsigned char *data; /* File header */ fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n", input_file_name ); fprintf( outfile, "#define __FLATCS__ 0x%04x\n", code_selector ); fprintf( outfile, "#include \"builtin16.h\"\n\n" ); fprintf( outfile, "extern void RELAY_Unimplemented16(void);\n\n" ); data = (unsigned char *)xmalloc( 0x10000 ); memset( data, 0, 16 ); data_offset = 16; strupper( DLLName ); /* Build sorted list of all argument types, without duplicates */ typelist = (ORDDEF **)calloc( Limit+1, sizeof(ORDDEF *) ); for (i = nFuncs = 0; i <= Limit; i++) { ORDDEF *odp = Ordinals[i]; if (!odp) continue; switch (odp->type) { case TYPE_REGISTER: case TYPE_INTERRUPT: case TYPE_CDECL: case TYPE_PASCAL: case TYPE_PASCAL_16: case TYPE_STUB: typelist[nFuncs++] = odp; default: break; } } qsort( typelist, nFuncs, sizeof(ORDDEF *), Spec16TypeCompare ); i = nTypes = 0; while ( i < nFuncs ) { typelist[nTypes++] = typelist[i++]; while ( i < nFuncs && Spec16TypeCompare( typelist + i, typelist + nTypes-1 ) == 0 ) i++; } /* Output CallFrom16 routines needed by this .spec file */ for ( i = 0; i < nTypes; i++ ) { char profile[101]; sprintf( profile, "%s_%s_%s", (typelist[i]->type == TYPE_CDECL) ? "c" : "p", (typelist[i]->type == TYPE_REGISTER) ? "regs" : (typelist[i]->type == TYPE_INTERRUPT) ? "intr" : (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long", typelist[i]->u.func.arg_types ); BuildCallFrom16Func( outfile, profile, DLLName, TRUE ); } /* Output the DLL functions prototypes */ for (i = 0; i <= Limit; i++) { ORDDEF *odp = Ordinals[i]; if (!odp) continue; switch(odp->type) { case TYPE_REGISTER: case TYPE_INTERRUPT: case TYPE_CDECL: case TYPE_PASCAL: case TYPE_PASCAL_16: fprintf( outfile, "extern void %s();\n", odp->u.func.link_name ); break; default: break; } } /* Output code segment */ fprintf( outfile, "\nstatic struct\n{\n CALLFROM16 call[%d];\n" " ENTRYPOINT16 entry[%d];\n} Code_Segment = \n{\n {\n", nTypes, nFuncs ); code_offset = 0; for ( i = 0; i < nTypes; i++ ) { char profile[101], *arg; int argsize = 0; sprintf( profile, "%s_%s_%s", (typelist[i]->type == TYPE_CDECL) ? "c" : "p", (typelist[i]->type == TYPE_REGISTER) ? "regs" : (typelist[i]->type == TYPE_INTERRUPT) ? "intr" : (typelist[i]->type == TYPE_PASCAL_16) ? "word" : "long", typelist[i]->u.func.arg_types ); if ( typelist[i]->type != TYPE_CDECL ) for ( arg = typelist[i]->u.func.arg_types; *arg; arg++ ) switch ( *arg ) { case 'w': /* word */ case 's': /* s_word */ argsize += 2; break; case 'l': /* long or segmented pointer */ case 'T': /* segmented pointer to null-terminated string */ case 'p': /* linear pointer */ case 't': /* linear pointer to null-terminated string */ argsize += 4; break; } if ( typelist[i]->type == TYPE_INTERRUPT ) argsize += 2; fprintf( outfile, " { 0x68, %s_CallFrom16_%s, 0x9a, CallFrom16%s,\n", DLLName, profile, (typelist[i]->type == TYPE_REGISTER || typelist[i]->type == TYPE_INTERRUPT)? "Register": typelist[i]->type == TYPE_PASCAL_16? "Word" : "Long" ); if (argsize) fprintf( outfile, " 0x%04x, 0x66, 0xca, %d, \"%s\" },\n", code_selector, argsize, profile ); else fprintf( outfile, " 0x%04x, 0x66, 0xcb, 0x9090, \"%s\" },\n", code_selector, profile ); code_offset += sizeof(CALLFROM16); } fprintf( outfile, " },\n {\n" ); for (i = 0; i <= Limit; i++) { ORDDEF *odp = Ordinals[i]; if (!odp) continue; switch (odp->type) { case TYPE_ABS: odp->offset = LOWORD(odp->u.abs.value); break; case TYPE_BYTE: odp->offset = data_offset; data_offset += StoreVariableCode( data + data_offset, 1, odp); break; case TYPE_WORD: odp->offset = data_offset; data_offset += StoreVariableCode( data + data_offset, 2, odp); break; case TYPE_LONG: odp->offset = data_offset; data_offset += StoreVariableCode( data + data_offset, 4, odp); break; case TYPE_REGISTER: case TYPE_INTERRUPT: case TYPE_CDECL: case TYPE_PASCAL: case TYPE_PASCAL_16: case TYPE_STUB: type = bsearch( &odp, typelist, nTypes, sizeof(ORDDEF *), Spec16TypeCompare ); assert( type ); fprintf( outfile, " /* %s.%d */ ", DLLName, i ); fprintf( outfile, "{ 0x5566, 0x68, %s, 0xe866, %d /* %s_%s_%s */ },\n", odp->u.func.link_name, (type-typelist)*sizeof(CALLFROM16) - (code_offset + sizeof(ENTRYPOINT16)), (odp->type == TYPE_CDECL) ? "c" : "p", (odp->type == TYPE_REGISTER) ? "regs" : (odp->type == TYPE_INTERRUPT) ? "intr" : (odp->type == TYPE_PASCAL_16) ? "word" : "long", odp->u.func.arg_types ); odp->offset = code_offset; code_offset += sizeof(ENTRYPOINT16); break; default: fprintf(stderr,"build: function type %d not available for Win16\n", odp->type); exit(1); } } fprintf( outfile, " }\n};\n" ); /* Output data segment */ dump_bytes( outfile, data, data_offset, "Data_Segment" ); /* Build the module */ module_size = BuildModule16( outfile, code_offset, data_offset ); /* Output the DLL descriptor */ if (rsrc_name[0]) fprintf( outfile, "extern const char %s[];\n\n", rsrc_name ); fprintf( outfile, "\nstatic const BUILTIN16_DESCRIPTOR descriptor = \n{\n" ); fprintf( outfile, " \"%s\",\n", DLLName ); fprintf( outfile, " Module,\n" ); fprintf( outfile, " sizeof(Module),\n" ); fprintf( outfile, " (BYTE *)&Code_Segment,\n" ); fprintf( outfile, " (BYTE *)Data_Segment,\n" ); fprintf( outfile, " \"%s\",\n", owner_name ); fprintf( outfile, " %s\n", rsrc_name[0] ? rsrc_name : "0" ); fprintf( outfile, "};\n" ); /* Output the DLL constructor */ fprintf( outfile, "#ifdef __GNUC__\n" ); fprintf( outfile, "static void %s_init(void) __attribute__((constructor));\n", DLLName ); fprintf( outfile, "#else /* defined(__GNUC__) */\n" ); fprintf( outfile, "static void __asm__dummy_dll_init(void) {\n" ); fprintf( outfile, "asm(\"\\t.section\t.init ,\\\"ax\\\"\\n\"\n" ); fprintf( outfile, " \"\\tcall %s_init\\n\"\n", DLLName ); fprintf( outfile, " \"\\t.previous\\n\");\n" ); fprintf( outfile, "}\n" ); fprintf( outfile, "#endif /* defined(__GNUC__) */\n" ); fprintf( outfile, "static void %s_init(void) { BUILTIN_RegisterDLL( &descriptor ); }\n", DLLName ); } /******************************************************************* * BuildGlue * * Build the 16-bit-to-Wine/Wine-to-16-bit callback glue code */ void BuildGlue( FILE *outfile, FILE *infile ) { char buffer[1024]; /* File header */ fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n", input_file_name ); fprintf( outfile, "#include \"builtin16.h\"\n" ); fprintf( outfile, "#include \"stackframe.h\"\n\n" ); fprintf( outfile, "extern WORD CALLBACK CallTo16Word( FARPROC16 target, INT nArgs );\n" ); fprintf( outfile, "extern LONG CALLBACK CallTo16Long( FARPROC16 target, INT nArgs );\n" ); /* Build the callback glue functions */ while (fgets( buffer, sizeof(buffer), infile )) { if (strstr( buffer, "### start build ###" )) break; } while (fgets( buffer, sizeof(buffer), infile )) { char *p; if ( (p = strstr( buffer, "CallFrom16_" )) != NULL ) { char *q, *profile = p + strlen( "CallFrom16_" ); for (q = profile; (*q == '_') || isalpha(*q); q++ ) ; *q = '\0'; for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- ) ; if ( ++q < p ) p[-1] = '\0'; else q = ""; BuildCallFrom16Func( outfile, profile, q, FALSE ); } if ( (p = strstr( buffer, "CallTo16_" )) != NULL ) { char *q, *profile = p + strlen( "CallTo16_" ); for (q = profile; (*q == '_') || isalpha(*q); q++ ) ; *q = '\0'; for (q = p-1; q > buffer && ((*q == '_') || isalnum(*q)); q-- ) ; if ( ++q < p ) p[-1] = '\0'; else q = ""; BuildCallTo16Func( outfile, profile, q ); } if (strstr( buffer, "### stop build ###" )) break; } fclose( infile ); }