/* * Copyright 1993 Robert J. Amstadt * Copyright 1995 Martin von Loewis * Copyright 1995, 1996, 1997 Alexandre Julliard * Copyright 1997 Eric Youngdale */ #include #include #include #include #include #include #include "winbase.h" #include "winnt.h" #include "module.h" #include "neexe.h" #include "selectors.h" #include "stackframe.h" #include "thread.h" #ifdef NEED_UNDERSCORE_PREFIX # define PREFIX "_" #else # define PREFIX #endif #ifdef HAVE_ASM_STRING # define STRING ".string" #else # define STRING ".ascii" #endif #if defined(__GNUC__) && !defined(__svr4__) # define USE_STABS #else # undef USE_STABS #endif typedef enum { TYPE_INVALID, TYPE_BYTE, /* byte variable (Win16) */ TYPE_WORD, /* word variable (Win16) */ TYPE_LONG, /* long variable (Win16) */ TYPE_PASCAL_16, /* pascal function with 16-bit return (Win16) */ TYPE_PASCAL, /* pascal function with 32-bit return (Win16) */ TYPE_ABS, /* absolute value (Win16) */ TYPE_RETURN, /* simple return value function (Win16) */ TYPE_REGISTER, /* register function */ TYPE_STUB, /* unimplemented stub */ TYPE_STDCALL, /* stdcall function (Win32) */ TYPE_CDECL, /* cdecl function (Win32) */ TYPE_VARARGS, /* varargs function (Win32) */ TYPE_EXTERN, /* external symbol (Win32) */ TYPE_FORWARD, /* forwarded function (Win32) */ TYPE_NBTYPES } ORD_TYPE; static const char * const TypeNames[TYPE_NBTYPES] = { NULL, "byte", /* TYPE_BYTE */ "word", /* TYPE_WORD */ "long", /* TYPE_LONG */ "pascal16", /* TYPE_PASCAL_16 */ "pascal", /* TYPE_PASCAL */ "equate", /* TYPE_ABS */ "return", /* TYPE_RETURN */ "register", /* TYPE_REGISTER */ "stub", /* TYPE_STUB */ "stdcall", /* TYPE_STDCALL */ "cdecl", /* TYPE_CDECL */ "varargs", /* TYPE_VARARGS */ "extern", /* TYPE_EXTERN */ "forward" /* TYPE_FORWARD */ }; #define MAX_ORDINALS 2048 #define MAX_IMPORTS 16 /* Callback function used for stub functions */ #define STUB_CALLBACK \ ((SpecType == SPEC_WIN16) ? "RELAY_Unimplemented16": "RELAY_Unimplemented32") typedef enum { SPEC_INVALID, SPEC_WIN16, SPEC_WIN32 } SPEC_TYPE; typedef struct { int n_values; int *values; } ORD_VARIABLE; typedef struct { int n_args; char arg_types[32]; char link_name[80]; } ORD_FUNCTION; typedef struct { int arg_size; int ret_value; } ORD_RETURN; typedef struct { int value; } ORD_ABS; typedef struct { char link_name[80]; } ORD_VARARGS; typedef struct { char link_name[80]; } ORD_EXTERN; typedef struct { char link_name[80]; } ORD_FORWARD; typedef struct { ORD_TYPE type; int offset; int lineno; char name[80]; union { ORD_VARIABLE var; ORD_FUNCTION func; ORD_RETURN ret; ORD_ABS abs; ORD_VARARGS vargs; ORD_EXTERN ext; ORD_FORWARD fwd; } u; } ORDDEF; static ORDDEF OrdinalDefinitions[MAX_ORDINALS]; static SPEC_TYPE SpecType = SPEC_INVALID; static char DLLName[80]; static char DLLFileName[80]; static int Limit = 0; static int Base = MAX_ORDINALS; static int DLLHeapSize = 0; static char *SpecName; static FILE *SpecFp; static WORD Code_Selector, Data_Selector; static char DLLInitFunc[80]; static char *DLLImports[MAX_IMPORTS]; static int nb_imports = 0; char *ParseBuffer = NULL; char *ParseNext; char ParseSaveChar; int Line; static int debugging = 1; /* Offset of a structure field relative to the start of the struct */ #define STRUCTOFFSET(type,field) ((int)&((type *)0)->field) /* Offset of register relative to the start of the CONTEXT struct */ #define CONTEXTOFFSET(reg) STRUCTOFFSET(CONTEXT,reg) /* Offset of the stack pointer relative to %fs:(0) */ #define STACKOFFSET (STRUCTOFFSET(THDB,cur_stack) - STRUCTOFFSET(THDB,teb)) static void *xmalloc (size_t size) { void *res; res = malloc (size ? size : 1); if (res == NULL) { fprintf (stderr, "Virtual memory exhausted.\n"); exit (1); } return res; } static void *xrealloc (void *ptr, size_t size) { void *res = realloc (ptr, size); if (res == NULL) { fprintf (stderr, "Virtual memory exhausted.\n"); exit (1); } return res; } static char *xstrdup( const char *str ) { char *res = strdup( str ); if (!res) { fprintf (stderr, "Virtual memory exhausted.\n"); exit (1); } return res; } static int IsNumberString(char *s) { while (*s != '\0') if (!isdigit(*s++)) return 0; return 1; } static char *strupper(char *s) { char *p; for(p = s; *p != '\0'; p++) *p = toupper(*p); return s; } static char * GetTokenInLine(void) { char *p; char *token; if (ParseNext != ParseBuffer) { if (ParseSaveChar == '\0') return NULL; *ParseNext = ParseSaveChar; } /* * Remove initial white space. */ for (p = ParseNext; isspace(*p); p++) ; if ((*p == '\0') || (*p == '#')) return NULL; /* * Find end of token. */ token = p++; if (*token != '(' && *token != ')') while (*p != '\0' && *p != '(' && *p != ')' && !isspace(*p)) p++; ParseSaveChar = *p; ParseNext = p; *p = '\0'; return token; } static char * GetToken(void) { char *token; if (ParseBuffer == NULL) { ParseBuffer = xmalloc(512); ParseNext = ParseBuffer; while (1) { Line++; if (fgets(ParseBuffer, 511, SpecFp) == NULL) return NULL; if (ParseBuffer[0] != '#') break; } } while ((token = GetTokenInLine()) == NULL) { ParseNext = ParseBuffer; while (1) { Line++; if (fgets(ParseBuffer, 511, SpecFp) == NULL) return NULL; if (ParseBuffer[0] != '#') break; } } return token; } /******************************************************************* * ParseVariable * * Parse a variable definition. */ static int ParseVariable( ORDDEF *odp ) { char *endptr; int *value_array; int n_values; int value_array_size; char *token = GetToken(); if (*token != '(') { fprintf(stderr, "%s:%d: Expected '(' got '%s'\n", SpecName, Line, token); return -1; } n_values = 0; value_array_size = 25; value_array = xmalloc(sizeof(*value_array) * value_array_size); while ((token = GetToken()) != NULL) { if (*token == ')') break; value_array[n_values++] = strtol(token, &endptr, 0); if (n_values == value_array_size) { value_array_size += 25; value_array = xrealloc(value_array, sizeof(*value_array) * value_array_size); } if (endptr == NULL || *endptr != '\0') { fprintf(stderr, "%s:%d: Expected number value, got '%s'\n", SpecName, Line, token); return -1; } } if (token == NULL) { fprintf(stderr, "%s:%d: End of file in variable declaration\n", SpecName, Line); return -1; } odp->u.var.n_values = n_values; odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values); return 0; } /******************************************************************* * ParseExportFunction * * Parse a function definition. */ static int ParseExportFunction( ORDDEF *odp ) { char *token; int i; switch(SpecType) { case SPEC_WIN16: if (odp->type == TYPE_STDCALL) { fprintf( stderr, "%s:%d: 'stdcall' not supported for Win16\n", SpecName, Line ); return -1; } break; case SPEC_WIN32: if ((odp->type == TYPE_PASCAL) || (odp->type == TYPE_PASCAL_16)) { fprintf( stderr, "%s:%d: 'pascal' not supported for Win32\n", SpecName, Line ); return -1; } break; default: break; } token = GetToken(); if (*token != '(') { fprintf(stderr, "%s:%d: Expected '(' got '%s'\n", SpecName, Line, token); return -1; } for (i = 0; i < sizeof(odp->u.func.arg_types)-1; i++) { token = GetToken(); if (*token == ')') break; if (!strcmp(token, "word")) odp->u.func.arg_types[i] = 'w'; else if (!strcmp(token, "s_word")) odp->u.func.arg_types[i] = 's'; else if (!strcmp(token, "long") || !strcmp(token, "segptr")) odp->u.func.arg_types[i] = 'l'; else if (!strcmp(token, "ptr")) odp->u.func.arg_types[i] = 'p'; else if (!strcmp(token, "str")) odp->u.func.arg_types[i] = 't'; else if (!strcmp(token, "wstr")) odp->u.func.arg_types[i] = 'W'; else if (!strcmp(token, "segstr")) odp->u.func.arg_types[i] = 'T'; else if (!strcmp(token, "double")) { odp->u.func.arg_types[i++] = 'l'; odp->u.func.arg_types[i] = 'l'; } else { fprintf(stderr, "%s:%d: Unknown variable type '%s'\n", SpecName, Line, token); return -1; } if (SpecType == SPEC_WIN32) { if (strcmp(token, "long") && strcmp(token, "ptr") && strcmp(token, "str") && strcmp(token, "wstr") && strcmp(token, "double")) { fprintf( stderr, "%s:%d: Type '%s' not supported for Win32\n", SpecName, Line, token ); return -1; } } } if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types))) { fprintf( stderr, "%s:%d: Too many arguments\n", SpecName, Line ); return -1; } odp->u.func.arg_types[i] = '\0'; if ((odp->type == TYPE_STDCALL) && !i) odp->type = TYPE_CDECL; /* stdcall is the same as cdecl for 0 args */ strcpy(odp->u.func.link_name, GetToken()); return 0; } /******************************************************************* * ParseEquate * * Parse an 'equate' definition. */ static int ParseEquate( ORDDEF *odp ) { char *endptr; char *token = GetToken(); int value = strtol(token, &endptr, 0); if (endptr == NULL || *endptr != '\0') { fprintf(stderr, "%s:%d: Expected number value, got '%s'\n", SpecName, Line, token); return -1; } if (SpecType == SPEC_WIN32) { fprintf( stderr, "%s:%d: 'equate' not supported for Win32\n", SpecName, Line ); return -1; } odp->u.abs.value = value; return 0; } /******************************************************************* * ParseReturn * * Parse a 'return' definition. */ static int ParseReturn( ORDDEF *odp ) { char *token; char *endptr; token = GetToken(); odp->u.ret.arg_size = strtol(token, &endptr, 0); if (endptr == NULL || *endptr != '\0') { fprintf(stderr, "%s:%d: Expected number value, got '%s'\n", SpecName, Line, token); return -1; } token = GetToken(); odp->u.ret.ret_value = strtol(token, &endptr, 0); if (endptr == NULL || *endptr != '\0') { fprintf(stderr, "%s:%d: Expected number value, got '%s'\n", SpecName, Line, token); return -1; } if (SpecType == SPEC_WIN32) { fprintf( stderr, "%s:%d: 'return' not supported for Win32\n", SpecName, Line ); return -1; } return 0; } /******************************************************************* * ParseStub * * Parse a 'stub' definition. */ static int ParseStub( ORDDEF *odp ) { odp->u.func.arg_types[0] = '\0'; strcpy( odp->u.func.link_name, STUB_CALLBACK ); return 0; } /******************************************************************* * ParseVarargs * * Parse an 'varargs' definition. */ static int ParseVarargs( ORDDEF *odp ) { char *token; if (SpecType == SPEC_WIN16) { fprintf( stderr, "%s:%d: 'varargs' not supported for Win16\n", SpecName, Line ); return -1; } token = GetToken(); if (*token != '(') { fprintf(stderr, "%s:%d: Expected '(' got '%s'\n", SpecName, Line, token); return -1; } token = GetToken(); if (*token != ')') { fprintf(stderr, "%s:%d: Expected ')' got '%s'\n", SpecName, Line, token); return -1; } strcpy( odp->u.vargs.link_name, GetToken() ); return 0; } /******************************************************************* * ParseExtern * * Parse an 'extern' definition. */ static int ParseExtern( ORDDEF *odp ) { if (SpecType == SPEC_WIN16) { fprintf( stderr, "%s:%d: 'extern' not supported for Win16\n", SpecName, Line ); return -1; } strcpy( odp->u.ext.link_name, GetToken() ); return 0; } /******************************************************************* * ParseForward * * Parse a 'forward' definition. */ static int ParseForward( ORDDEF *odp ) { if (SpecType == SPEC_WIN16) { fprintf( stderr, "%s:%d: 'forward' not supported for Win16\n", SpecName, Line ); return -1; } strcpy( odp->u.fwd.link_name, GetToken() ); return 0; } /******************************************************************* * ParseOrdinal * * Parse an ordinal definition. */ static int ParseOrdinal(int ordinal) { ORDDEF *odp; char *token; if (ordinal >= MAX_ORDINALS) { fprintf(stderr, "%s:%d: Ordinal number too large\n", SpecName, Line ); return -1; } if (ordinal > Limit) Limit = ordinal; if (ordinal < Base) Base = ordinal; odp = &OrdinalDefinitions[ordinal]; if (!(token = GetToken())) { fprintf(stderr, "%s:%d: Expected type after ordinal\n", SpecName, Line); return -1; } for (odp->type = 0; odp->type < TYPE_NBTYPES; odp->type++) if (TypeNames[odp->type] && !strcmp( token, TypeNames[odp->type] )) break; if (odp->type >= TYPE_NBTYPES) { fprintf( stderr, "%s:%d: Expected type after ordinal, found '%s' instead\n", SpecName, Line, token ); return -1; } if (!(token = GetToken())) { fprintf( stderr, "%s:%d: Expected name after type\n", SpecName, Line ); return -1; } strcpy( odp->name, token ); odp->lineno = Line; switch(odp->type) { case TYPE_BYTE: case TYPE_WORD: case TYPE_LONG: return ParseVariable( odp ); case TYPE_PASCAL_16: case TYPE_PASCAL: case TYPE_REGISTER: case TYPE_STDCALL: case TYPE_CDECL: return ParseExportFunction( odp ); case TYPE_ABS: return ParseEquate( odp ); case TYPE_RETURN: return ParseReturn( odp ); case TYPE_STUB: return ParseStub( odp ); case TYPE_VARARGS: return ParseVarargs( odp ); case TYPE_EXTERN: return ParseExtern( odp ); case TYPE_FORWARD: return ParseForward( odp ); default: fprintf( stderr, "Should not happen\n" ); return -1; } } /******************************************************************* * ParseTopLevel * * Parse a spec file. */ static int ParseTopLevel(void) { char *token; while ((token = GetToken()) != NULL) { if (strcmp(token, "name") == 0) { strcpy(DLLName, GetToken()); strupper(DLLName); if (!DLLFileName[0]) sprintf( DLLFileName, "%s.DLL", DLLName ); } else if (strcmp(token, "file") == 0) { strcpy(DLLFileName, GetToken()); strupper(DLLFileName); } else if (strcmp(token, "type") == 0) { token = GetToken(); if (!strcmp(token, "win16" )) SpecType = SPEC_WIN16; else if (!strcmp(token, "win32" )) SpecType = SPEC_WIN32; else { fprintf(stderr, "%s:%d: Type must be 'win16' or 'win32'\n", SpecName, Line); return -1; } } else if (strcmp(token, "heap") == 0) { token = GetToken(); if (!IsNumberString(token)) { fprintf(stderr, "%s:%d: Expected number after heap\n", SpecName, Line); return -1; } DLLHeapSize = atoi(token); } else if (strcmp(token, "init") == 0) { strcpy(DLLInitFunc, GetToken()); if (!DLLInitFunc[0]) fprintf(stderr, "%s:%d: Expected function name after init\n", SpecName, Line); } else if (strcmp(token, "import") == 0) { if (nb_imports >= MAX_IMPORTS) { fprintf( stderr, "%s:%d: Too many imports (limit %d)\n", SpecName, Line, MAX_IMPORTS ); return -1; } if (SpecType != SPEC_WIN32) { fprintf( stderr, "%s:%d: Imports not supported for Win16\n", SpecName, Line ); return -1; } DLLImports[nb_imports++] = xstrdup(GetToken()); } else if (IsNumberString(token)) { int ordinal; int rv; ordinal = atoi(token); if ((rv = ParseOrdinal(ordinal)) < 0) return rv; } else { fprintf(stderr, "%s:%d: Expected name, id, length or ordinal\n", SpecName, Line); return -1; } } return 0; } /******************************************************************* * 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; } /******************************************************************* * DumpBytes * * Dump a byte stream into the assembly code. */ static void DumpBytes( FILE *outfile, const unsigned char *data, int len, const char *section, const char *label_start ) { int i; if (section) fprintf( outfile, "\t%s\n", section ); if (label_start) fprintf( outfile, "%s:\n", label_start ); for (i = 0; i < len; i++) { if (!(i & 0x0f)) fprintf( outfile, "\t.byte " ); fprintf( outfile, "%d", *data++ ); if (i < len - 1) fprintf( outfile, "%c", ((i & 0x0f) != 0x0f) ? ',' : '\n' ); } fprintf( outfile, "\n" ); } /******************************************************************* * 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 ) { ORDDEF *odp; 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; 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 = 0x030a; 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; /* 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 */ odp = OrdinalDefinitions + 1; for (i = 1; i <= Limit; i++, odp++) { if (!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; odp = OrdinalDefinitions + 1; for (i = 1; i <= Limit; i++, odp++) { int selector = 0; switch (odp->type) { case TYPE_CDECL: case TYPE_PASCAL: case TYPE_PASCAL_16: case TYPE_REGISTER: case TYPE_RETURN: 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; /* Dump the module content */ DumpBytes( outfile, (char *)pModule, (int)pstr - (int)pModule, ".data", "Module_Start" ); return (int)pstr - (int)pModule; } /******************************************************************* * BuildSpec32File * * Build a Win32 C file from a spec file. */ static int BuildSpec32File( char * specfile, FILE *outfile ) { ORDDEF *odp; int i, nb_names, fwd_size = 0; fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n", specfile ); fprintf( outfile, "#include \"builtin32.h\"\n\n" ); /* Output code for all stubs functions */ fprintf( outfile, "extern const BUILTIN32_DESCRIPTOR %s_Descriptor;\n", DLLName ); for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) { if (odp->type != TYPE_STUB) continue; fprintf( outfile, "static void __stub_%d() { BUILTIN32_Unimplemented(&%s_Descriptor,%d); }\n", i, DLLName, i ); } /* Output code for all register functions */ fprintf( outfile, "#ifdef __i386__\n" ); fprintf( outfile, "#ifndef __GNUC__\n" ); fprintf( outfile, "static void __asm__dummy() {\n" ); fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" ); for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) { if (odp->type != TYPE_REGISTER) continue; fprintf( outfile, "__asm__(\".align 4\\n\\t\"\n" " \".globl " PREFIX "%s\\n\\t\"\n" " \".type " PREFIX "%s,@function\\n\\t\"\n" " \"" PREFIX "%s:\\n\\t\"\n" " \"call " PREFIX "CALL32_Regs\\n\\t\"\n" " \".long " PREFIX "__regs_%s\\n\\t\"\n" " \".byte %d,%d\");\n", odp->u.func.link_name, odp->u.func.link_name, odp->u.func.link_name, odp->u.func.link_name, 4 * strlen(odp->u.func.arg_types), 4 * strlen(odp->u.func.arg_types) ); } fprintf( outfile, "#ifndef __GNUC__\n" ); fprintf( outfile, "}\n" ); fprintf( outfile, "#endif /* !defined(__GNUC__) */\n" ); fprintf( outfile, "#endif /* defined(__i386__) */\n" ); /* Output the DLL functions prototypes */ for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) { switch(odp->type) { case TYPE_VARARGS: fprintf( outfile, "extern void %s();\n", odp->u.vargs.link_name ); break; case TYPE_EXTERN: fprintf( outfile, "extern void %s();\n", odp->u.ext.link_name ); break; case TYPE_REGISTER: case TYPE_STDCALL: case TYPE_CDECL: fprintf( outfile, "extern void %s();\n", odp->u.func.link_name ); break; case TYPE_FORWARD: fwd_size += strlen(odp->u.fwd.link_name) + 1; break; case TYPE_INVALID: case TYPE_STUB: break; default: fprintf(stderr,"build: function type %d not available for Win32\n", odp->type); return -1; } } /* Output LibMain function */ if (DLLInitFunc[0]) fprintf( outfile, "extern void %s();\n", DLLInitFunc ); /* Output the DLL functions table */ fprintf( outfile, "\nstatic const ENTRYPOINT32 Functions[%d] =\n{\n", Limit - Base + 1 ); for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) { switch(odp->type) { case TYPE_INVALID: fprintf( outfile, " 0" ); break; case TYPE_VARARGS: fprintf( outfile, " %s", odp->u.vargs.link_name ); break; case TYPE_EXTERN: fprintf( outfile, " %s", odp->u.ext.link_name ); break; case TYPE_REGISTER: case TYPE_STDCALL: case TYPE_CDECL: fprintf( outfile, " %s", odp->u.func.link_name); break; case TYPE_STUB: fprintf( outfile, " __stub_%d", i ); break; case TYPE_FORWARD: fprintf( outfile, " (ENTRYPOINT32)\"%s\"", odp->u.fwd.link_name ); break; default: return -1; } if (i < Limit) fprintf( outfile, ",\n" ); } fprintf( outfile, "\n};\n\n" ); /* Output the DLL names table */ nb_names = 0; fprintf( outfile, "static const char * const FuncNames[] =\n{\n" ); for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) { if (odp->type == TYPE_INVALID) continue; if (nb_names++) fprintf( outfile, ",\n" ); fprintf( outfile, " \"%s\"", odp->name ); } fprintf( outfile, "\n};\n\n" ); /* Output the DLL argument types */ fprintf( outfile, "static const unsigned int ArgTypes[%d] =\n{\n", Limit - Base + 1 ); for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) { unsigned int j, mask = 0; if ((odp->type == TYPE_STDCALL) || (odp->type == TYPE_CDECL) || (odp->type == TYPE_REGISTER)) for (j = 0; odp->u.func.arg_types[j]; j++) { if (odp->u.func.arg_types[j] == 't') mask |= 1<< (j*2); if (odp->u.func.arg_types[j] == 'W') mask |= 2<< (j*2); } fprintf( outfile, " %d", mask ); if (i < Limit) fprintf( outfile, ",\n" ); } fprintf( outfile, "\n};\n\n" ); /* Output the DLL ordinals table */ fprintf( outfile, "static const unsigned short FuncOrdinals[] =\n{\n" ); nb_names = 0; for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) { if (odp->type == TYPE_INVALID) continue; if (nb_names++) fprintf( outfile, ",\n" ); fprintf( outfile, " %d", i - Base ); } fprintf( outfile, "\n};\n\n" ); /* Output the DLL functions arguments */ fprintf( outfile, "static const unsigned char FuncArgs[%d] =\n{\n", Limit - Base + 1 ); for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) { unsigned char args; switch(odp->type) { case TYPE_STDCALL: args = (unsigned char)strlen(odp->u.func.arg_types); break; case TYPE_CDECL: args = 0x80 | (unsigned char)strlen(odp->u.func.arg_types); break; case TYPE_REGISTER: args = 0x40 | (unsigned char)strlen(odp->u.func.arg_types); break; case TYPE_FORWARD: args = 0xfd; break; default: args = 0xff; break; } fprintf( outfile, " 0x%02x", args ); if (i < Limit) fprintf( outfile, ",\n" ); } fprintf( outfile, "\n};\n\n" ); /* Output the DLL imports */ if (nb_imports) { fprintf( outfile, "static const char * const Imports[%d] =\n{\n", nb_imports ); for (i = 0; i < nb_imports; i++) { fprintf( outfile, " \"%s\"", DLLImports[i] ); if (i < nb_imports-1) fprintf( outfile, ",\n" ); } fprintf( outfile, "\n};\n\n" ); } /* Output the DLL descriptor */ fprintf( outfile, "const BUILTIN32_DESCRIPTOR %s_Descriptor =\n{\n", DLLName ); fprintf( outfile, " \"%s\",\n", DLLName ); fprintf( outfile, " %d,\n", Base ); fprintf( outfile, " %d,\n", Limit - Base + 1 ); fprintf( outfile, " %d,\n", nb_names ); fprintf( outfile, " %d,\n", nb_imports ); fprintf( outfile, " %d,\n", (fwd_size + 3) & ~3 ); fprintf( outfile, " Functions,\n" " FuncNames,\n" " FuncOrdinals,\n" " FuncArgs,\n" " ArgTypes,\n"); fprintf( outfile, " %s,\n", nb_imports ? "Imports" : "0" ); fprintf( outfile, " %s\n", DLLInitFunc[0] ? DLLInitFunc : "0" ); fprintf( outfile, "};\n" ); return 0; } /******************************************************************* * BuildSpec16File * * Build a Win16 assembly file from a spec file. */ static int BuildSpec16File( char * specfile, FILE *outfile ) { ORDDEF *odp; int i; int code_offset, data_offset, module_size; unsigned char *data; data = (unsigned char *)xmalloc( 0x10000 ); memset( data, 0, 16 ); data_offset = 16; fprintf( outfile, "/* File generated automatically; do not edit! */\n" ); fprintf( outfile, "\t.text\n" ); fprintf( outfile, "Code_Start:\n" ); code_offset = 0; odp = OrdinalDefinitions; for (i = 0; i <= Limit; i++, odp++) { switch (odp->type) { case TYPE_INVALID: odp->offset = 0xffff; break; 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_RETURN: fprintf( outfile,"/* %s.%d */\n", DLLName, i); fprintf( outfile,"\tmovw $%d,%%ax\n",LOWORD(odp->u.ret.ret_value)); fprintf( outfile,"\tmovw $%d,%%dx\n",HIWORD(odp->u.ret.ret_value)); fprintf( outfile,"\t.byte 0x66\n"); if (odp->u.ret.arg_size != 0) fprintf( outfile, "\tlret $%d\n\n", odp->u.ret.arg_size); else { fprintf( outfile, "\tlret\n"); fprintf( outfile, "\tnop\n"); fprintf( outfile, "\tnop\n\n"); } odp->offset = code_offset; code_offset += 12; /* Assembly code is 12 bytes long */ break; case TYPE_REGISTER: case TYPE_CDECL: case TYPE_PASCAL: case TYPE_PASCAL_16: case TYPE_STUB: fprintf( outfile, "/* %s.%d */\n", DLLName, i); fprintf( outfile, "\tpushw %%bp\n" ); fprintf( outfile, "\tpushl $" PREFIX "%s\n",odp->u.func.link_name); /* FreeBSD does not understand lcall, so do it the hard way */ fprintf( outfile, "\t.byte 0x9a\n" ); fprintf( outfile, "\t.long " PREFIX "CallFrom16_%s_%s_%s\n", (odp->type == TYPE_CDECL) ? "c" : "p", (odp->type == TYPE_REGISTER) ? "regs" : (odp->type == TYPE_PASCAL_16) ? "word" : "long", odp->u.func.arg_types ); fprintf( outfile, "\t.long 0x%08lx\n", MAKELONG( Code_Selector, 0x9090 /* nop ; nop */ ) ); odp->offset = code_offset; code_offset += 16; /* Assembly code is 16 bytes long */ break; default: fprintf(stderr,"build: function type %d not available for Win16\n", odp->type); return -1; } } if (!code_offset) /* Make sure the code segment is not empty */ { fprintf( outfile, "\t.byte 0\n" ); code_offset++; } /* Output data segment */ DumpBytes( outfile, data, data_offset, NULL, "Data_Start" ); /* Build the module */ module_size = BuildModule16( outfile, code_offset, data_offset ); /* Output the DLL descriptor */ fprintf( outfile, "\t.text\n" ); fprintf( outfile, "DLLName:\t" STRING " \"%s\\0\"\n", DLLName ); fprintf( outfile, "\t.align 4\n" ); fprintf( outfile, "\t.globl " PREFIX "%s_Descriptor\n", DLLName ); fprintf( outfile, PREFIX "%s_Descriptor:\n", DLLName ); fprintf( outfile, "\t.long DLLName\n" ); /* Name */ fprintf( outfile, "\t.long Module_Start\n" ); /* Module start */ fprintf( outfile, "\t.long %d\n", module_size ); /* Module size */ fprintf( outfile, "\t.long Code_Start\n" ); /* Code start */ fprintf( outfile, "\t.long Data_Start\n" ); /* Data start */ return 0; } /******************************************************************* * BuildSpecFile * * Build an assembly file from a spec file. */ static int BuildSpecFile( FILE *outfile, char *specname ) { SpecName = specname; SpecFp = fopen( specname, "r"); if (SpecFp == NULL) { fprintf(stderr, "Could not open specification file, '%s'\n", specname); return -1; } if (ParseTopLevel() < 0) return -1; switch(SpecType) { case SPEC_WIN16: return BuildSpec16File( specname, outfile ); case SPEC_WIN32: return BuildSpec32File( specname, outfile ); default: fprintf( stderr, "%s: Missing 'type' declaration\n", specname ); return -1; } } /******************************************************************* * TransferArgs16To32 * * Get the arguments from the 16-bit stack and push them on the 32-bit stack. * The 16-bit stack layout is: * ... ... * (bp+8) arg2 * (bp+6) arg1 * (bp+4) cs * (bp+2) ip * (bp) bp * * For 'cdecl' argn up to arg1 are reversed. */ static int TransferArgs16To32( FILE *outfile, char *args, int usecdecl ) { int i, pos16, pos32; char *xargs; /* Copy the arguments */ pos16 = 6; /* skip bp and return address */ pos32 = usecdecl ? -(strlen(args) * 4) : 0; xargs = usecdecl ? args:args+strlen(args); for (i = strlen(args); i > 0; i--) { if (!usecdecl) { pos32 -= 4; xargs--; } switch(*xargs) { case 'w': /* word */ fprintf( outfile, "\tmovzwl %d(%%ebp),%%eax\n", pos16 ); fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", pos32 ); pos16 += 2; break; case 's': /* s_word */ fprintf( outfile, "\tmovswl %d(%%ebp),%%eax\n", pos16 ); fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", pos32 ); pos16 += 2; break; case 'l': /* long or segmented pointer */ case 'T': /* segmented pointer to null-terminated string */ fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", pos16 ); fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", pos32 ); pos16 += 4; break; case 'p': /* linear pointer */ case 't': /* linear pointer to null-terminated string */ /* Get the selector */ fprintf( outfile, "\tmovw %d(%%ebp),%%ax\n", pos16 + 2 ); /* Get the selector base */ fprintf( outfile, "\tandl $0xfff8,%%eax\n" ); fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%eax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", pos32 ); /* Add the offset */ fprintf( outfile, "\tmovzwl %d(%%ebp),%%eax\n", pos16 ); fprintf( outfile, "\taddl %%eax,%d(%%ebx)\n", pos32 ); pos16 += 4; break; default: fprintf( stderr, "Unknown arg type '%c'\n", *xargs ); } if (usecdecl) { pos32 += 4; xargs++; } } return pos16 - 6; /* Return the size of the 16-bit args */ } /******************************************************************* * BuildContext16 * * Build the context structure on the 32-bit stack. */ static void BuildContext16( FILE *outfile ) { /* Store the registers */ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(Eax) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %%ecx,%d(%%ebx)\n", CONTEXTOFFSET(Ecx) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %%edx,%d(%%ebx)\n", CONTEXTOFFSET(Edx) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %%esi,%d(%%ebx)\n", CONTEXTOFFSET(Esi) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %%edi,%d(%%ebx)\n", CONTEXTOFFSET(Edi) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl -24(%%ebp),%%eax\n" ); /* Get %ebx from stack*/ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(Ebx) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovzwl -10(%%ebp),%%eax\n" ); /* Get %ds from stack*/ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(SegDs) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovzwl -6(%%ebp),%%eax\n" ); /* Get %es from stack*/ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(SegEs) - sizeof(CONTEXT) ); fprintf( outfile, "\tpushfl\n" ); fprintf( outfile, "\tpopl %d(%%ebx)\n", CONTEXTOFFSET(EFlags) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl -20(%%ebp),%%eax\n" ); /* Get %ebp from stack */ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(Ebp) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovzwl 2(%%ebp),%%eax\n" ); /* Get %ip from stack */ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(Eip) - sizeof(CONTEXT) ); fprintf( outfile, "\tleal 2(%%ebp),%%eax\n" ); /* Get initial %sp */ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(Esp) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovzwl 4(%%ebp),%%eax\n" ); /* Get %cs from stack */ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(SegCs) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovzwl -14(%%ebp),%%eax\n" ); /* Get %fs from stack */ fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(SegFs) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovw %%gs,%%ax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(SegGs) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovw %%ss,%%ax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", CONTEXTOFFSET(SegSs) - sizeof(CONTEXT) ); #if 0 fprintf( outfile, "\tfsave %d(%%ebx)\n", CONTEXTOFFSET(FloatSave) - sizeof(CONTEXT) ); #endif } /******************************************************************* * RestoreContext16 * * Restore the registers from the context structure. */ static void RestoreContext16( FILE *outfile ) { /* Get the 32-bit stack pointer */ fprintf( outfile, "\tleal -%d(%%ebp),%%ebx\n", STRUCTOFFSET(STACK32FRAME,ebp) ); /* Remove everything up to (including) the return address * from the 16-bit stack */ fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", CONTEXTOFFSET(SegSs) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovw %%ax,%%ss\n" ); fprintf( outfile, "\tmovl %d(%%ebx),%%esp\n", CONTEXTOFFSET(Esp) - sizeof(CONTEXT) ); fprintf( outfile, "\taddl $4,%%esp\n" ); /* Remove return address */ /* Restore the registers */ fprintf( outfile, "\tmovl %d(%%ebx),%%ecx\n", CONTEXTOFFSET(Ecx) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %d(%%ebx),%%edx\n", CONTEXTOFFSET(Edx) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %d(%%ebx),%%esi\n", CONTEXTOFFSET(Esi) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %d(%%ebx),%%edi\n", CONTEXTOFFSET(Edi) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %d(%%ebx),%%ebp\n", CONTEXTOFFSET(Ebp) - sizeof(CONTEXT) ); fprintf( outfile, "\tpushw %d(%%ebx)\n", /* Push new cs */ CONTEXTOFFSET(SegCs) - sizeof(CONTEXT) ); fprintf( outfile, "\tpushw %d(%%ebx)\n", /* Push new ip */ CONTEXTOFFSET(Eip) - sizeof(CONTEXT) ); fprintf( outfile, "\tpushl %d(%%ebx)\n", /* Push new ds */ CONTEXTOFFSET(SegDs) - sizeof(CONTEXT) ); fprintf( outfile, "\tpushl %d(%%ebx)\n", /* Push new es */ CONTEXTOFFSET(SegEs) - sizeof(CONTEXT) ); fprintf( outfile, "\tpushl %d(%%ebx)\n", /* Push new fs */ CONTEXTOFFSET(SegFs) - sizeof(CONTEXT) ); fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(EFlags) - sizeof(CONTEXT) ); fprintf( outfile, "\tpopfl\n" ); fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", CONTEXTOFFSET(Eax) - sizeof(CONTEXT) ); fprintf( outfile, "\tmovl %d(%%ebx),%%ebx\n", CONTEXTOFFSET(Ebx) - sizeof(CONTEXT) ); fprintf( outfile, "\tpopl %%fs\n" ); /* Set fs */ fprintf( outfile, "\tpopl %%es\n" ); /* Set es */ fprintf( outfile, "\tpopl %%ds\n" ); /* Set ds */ } /******************************************************************* * BuildCallFrom16Func * * Build a 16-bit-to-Wine callback function. The syntax of the function * profile is: call_type_xxxxx, where 'call' is the letter 'c' or 'p' for C or * Pascal calling convention, 'type' is one of 'regs', 'word' or * 'long' 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). * For register functions, the arguments are ignored, but they are still * removed from the stack upon return. * * A special variant of the callback function is generated by the function * profile "t_long_". This is used by the Win95 16->32 thunk * functions C16ThkSL and C16ThkSL01 and is implemented as follows: * On entry, the EBX register is set up to contain a flat pointer to the * 16-bit stack such that EBX+22 points to the first argument. * Then, the entry point is called, while EBP is set up to point * to the return address (on the 32-bit stack). * The called function returns with CX set to the number of bytes * to be popped of the caller's stack. * * Stack layout upon entry to the callback function: * ... ... * (sp+18) word first 16-bit arg * (sp+16) word cs * (sp+14) word ip * (sp+12) word bp * (sp+8) long 32-bit entry point (used to store edx) * (sp+6) word high word of cs (always 0, used to store es) * (sp+4) word low word of cs of 16-bit entry point * (sp+2) word high word of ip (always 0, used to store ds) * (sp) word low word of ip of 16-bit entry point * * Added on the stack: * (sp-2) word saved fs * (sp-4) word buffer for Win16Mutex recursion count * (sp-8) long ebp * (sp-12) long saved previous stack */ static void BuildCallFrom16Func( FILE *outfile, char *profile ) { int argsize = 0; int short_ret = 0; int reg_func = 0; int Cdecl = 0; int thunk = 0; char *args = profile + 7; /* Parse function type */ if (!strncmp( "c_", profile, 2 )) Cdecl = 1; else if (!strncmp( "t_", profile, 2 )) thunk = 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( "long_", profile + 2, 5 )) { fprintf( stderr, "Invalid function name '%s', ignored\n", profile ); return; } /* Function header */ fprintf( outfile, "\n\t.align 4\n" ); #ifdef USE_STABS fprintf( outfile, ".stabs \"CallFrom16_%s:F1\",36,0,0," PREFIX "CallFrom16_%s\n", profile, profile); #endif fprintf( outfile, "\t.globl " PREFIX "CallFrom16_%s\n", profile ); fprintf( outfile, PREFIX "CallFrom16_%s:\n", profile ); /* Save 16-bit fs and leave room for Win16Mutex recursion count */ fprintf( outfile, "\t.byte 0x66\n\tpushl %%fs\n" ); fprintf( outfile, "\tpushw $0\n" ); /* Setup bp to point to its copy on the stack */ fprintf( outfile, "\tpushl %%ebp\n" ); /* Save the full 32-bit ebp */ fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" ); fprintf( outfile, "\taddw $20,%%bp\n" ); /* Save 16-bit ds and es */ /* Stupid FreeBSD assembler doesn't know these either */ /* fprintf( outfile, "\tmovw %%ds,-10(%%ebp)\n" ); */ fprintf( outfile, "\t.byte 0x66,0x8c,0x5d,0xf6\n" ); /* fprintf( outfile, "\tmovw %%es,-6(%%ebp)\n" ); */ fprintf( outfile, "\t.byte 0x66,0x8c,0x45,0xfa\n" ); /* Save %ebx */ fprintf( outfile, "\tpushl %%ebx\n" ); /* Restore 32-bit segment registers */ fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector ); #ifdef __svr4__ fprintf( outfile, "\tdata16\n"); #endif fprintf( outfile, "\tmovw %%bx,%%ds\n" ); #ifdef __svr4__ fprintf( outfile, "\tdata16\n"); #endif fprintf( outfile, "\tmovw %%bx,%%es\n" ); fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb,%%fs\n" ); /* Get the 32-bit stack pointer from the TEB */ fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET ); /* Save the 16-bit stack */ #ifdef __svr4__ fprintf( outfile,"\tdata16\n"); #endif fprintf( outfile, "\t.byte 0x64\n\tmovw %%ss,(%d)\n", STACKOFFSET + 2 ); fprintf( outfile, "\t.byte 0x64\n\tmovw %%sp,(%d)\n", STACKOFFSET ); /* Transfer the arguments */ if (reg_func) BuildContext16( outfile ); else if (*args) argsize = TransferArgs16To32( outfile, args, Cdecl ); else if (thunk) { /* Get the stack selector base */ fprintf( outfile, "\tmovw %%ss,%%ax\n" ); fprintf( outfile, "\tandl $0xfff8,%%eax\n" ); fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%eax\n" ); fprintf( outfile, "\tmovl %%eax,-24(%%ebp)\n" ); /* Add the offset */ fprintf( outfile, "\tleal -16(%%ebp),%%eax\n" ); fprintf( outfile, "\taddl %%eax,-24(%%ebp)\n" ); } /* Get the address of the API function */ fprintf( outfile, "\tmovl -4(%%ebp),%%eax\n" ); /* If necessary, save %edx over the API function address */ if (!reg_func && short_ret) fprintf( outfile, "\tmovl %%edx,-4(%%ebp)\n" ); /* Restore %ebx and store the 32-bit stack pointer instead */ fprintf( outfile, "\tmovl %%ebx,%%ebp\n" ); fprintf( outfile, "\tpopl %%ebx\n" ); fprintf( outfile, "\tpushl %%ebp\n" ); /* Switch to the 32-bit stack */ fprintf( outfile, "\tpushl %%ds\n" ); fprintf( outfile, "\tpopl %%ss\n" ); fprintf( outfile, "\tleal -%d(%%ebp),%%esp\n", reg_func ? sizeof(CONTEXT) : 4 * strlen(args) ); if (reg_func) /* Push the address of the context struct */ fprintf( outfile, "\tpushl %%esp\n" ); /* Setup %ebp to point to the previous stack frame (built by CallTo16) */ fprintf( outfile, "\taddl $%d,%%ebp\n", STRUCTOFFSET(STACK32FRAME,ebp) ); /* Print the debug information before the call */ if (debugging && !thunk) { int ftype = 0; if (Cdecl) ftype |= 4; if (reg_func) ftype |= 2; if (short_ret) ftype |= 1; fprintf( outfile, "\tpushl %%eax\n" ); fprintf( outfile, "\tpushl $Profile_%s\n", profile ); fprintf( outfile, "\tpushl $%d\n", ftype ); fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16\n" ); fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tpopl %%eax\n" ); } /* Call the entry point */ if (thunk) { fprintf( outfile, "\tpushl %%ebp\n" ); fprintf( outfile, "\tleal -4(%%esp), %%ebp\n" ); fprintf( outfile, "\tcall *%%eax\n" ); fprintf( outfile, "\tpopl %%ebp\n" ); } else fprintf( outfile, "\tcall *%%eax\n" ); /* Print the debug information after the call */ if (debugging && !thunk) { if (reg_func) { /* Push again the address of the context struct in case */ /* it has been removed by an stdcall function */ fprintf( outfile, "\tleal -%d(%%ebp),%%esp\n", sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME,ebp) ); fprintf( outfile, "\tpushl %%esp\n" ); } fprintf( outfile, "\tpushl %%eax\n" ); fprintf( outfile, "\tpushl $%d\n", reg_func ? 2 : (short_ret ? 1 : 0)); fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret\n" ); fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tpopl %%eax\n" ); } /* Restore the 16-bit stack */ #ifdef __svr4__ fprintf( outfile, "\tdata16\n"); #endif fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2 ); fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d),%%esp\n", STACKOFFSET ); fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET ); if (reg_func) { /* Calc the arguments size */ while (*args) { switch(*args) { case 'w': case 's': argsize += 2; break; case 'p': case 't': case 'l': case 'T': argsize += 4; break; default: fprintf( stderr, "Unknown arg type '%c'\n", *args ); } args++; } /* Restore registers from the context structure */ RestoreContext16( outfile ); } else { /* Restore high 16 bits of ebp */ fprintf( outfile, "\tpopl %%ebp\n" ); /* Restore ds and es */ fprintf( outfile, "\tincl %%esp\n" ); /* Remove mutex count */ fprintf( outfile, "\tincl %%esp\n" ); fprintf( outfile, "\tpopl %%edx\n" ); /* Remove ip and fs */ fprintf( outfile, "\tmovw %%dx,%%fs\n" ); /* and restore fs */ fprintf( outfile, "\tpopl %%edx\n" ); /* Remove cs and ds */ fprintf( outfile, "\tmovw %%dx,%%ds\n" ); /* and restore ds */ fprintf( outfile, "\t.byte 0x66\n\tpopl %%es\n" ); /* Restore es */ if (short_ret) fprintf( outfile, "\tpopl %%edx\n" ); /* Restore edx */ else { /* Get the return value into dx:ax */ fprintf( outfile, "\tmovl %%eax,%%edx\n" ); fprintf( outfile, "\tshrl $16,%%edx\n" ); /* Remove API entry point */ fprintf( outfile, "\taddl $4,%%esp\n" ); } /* Restore low 16 bits of ebp */ fprintf( outfile, "\tpopw %%bp\n" ); } /* Remove the arguments and return */ if (thunk) { fprintf( outfile, "\tpopl %%ebx\n" ); fprintf( outfile, "\txorb %%ch,%%ch\n" ); fprintf( outfile, "\taddw %%cx, %%sp\n" ); fprintf( outfile, "\tpushl %%ebx\n" ); fprintf( outfile, "\t.byte 0x66\n" ); fprintf( outfile, "\tlret\n" ); } else if (argsize && !Cdecl) { fprintf( outfile, "\t.byte 0x66\n" ); fprintf( outfile, "\tlret $%d\n", argsize ); } else { fprintf( outfile, "\t.byte 0x66\n" ); fprintf( outfile, "\tlret\n" ); } } /******************************************************************* * BuildCallTo16Func * * Build a Wine-to-16-bit callback function. * * Stack frame of the callback function: * ... ... * (ebp+16) arg2 * (ebp+12) arg1 * (ebp+8) func to call * (ebp+4) return address * (ebp) previous ebp * * Prototypes for the CallTo16 functions: * extern WINAPI WORD CallTo16_word_xxx( FARPROC16 func, args... ); * extern WINAPI LONG CallTo16_long_xxx( FARPROC16 func, args... ); * extern WINAPI void CallTo16_sreg_( const CONTEXT *context, int nb_args ); * extern WINAPI void CallTo16_lreg_( const CONTEXT *context, int nb_args ); */ static void BuildCallTo16Func( FILE *outfile, char *profile ) { int short_ret = 0; int reg_func = 0; char *args = profile + 5; if (!strncmp( "word_", profile, 5 )) short_ret = 1; else if (!strncmp( "sreg_", profile, 5 )) reg_func = 1; else if (!strncmp( "lreg_", profile, 5 )) reg_func = 2; else if (strncmp( "long_", profile, 5 )) { fprintf( stderr, "Invalid function name '%s'.\n", profile ); exit(1); } /* Function header */ fprintf( outfile, "\n\t.align 4\n" ); #ifdef USE_STABS fprintf( outfile, ".stabs \"CallTo16_%s:F1\",36,0,0," PREFIX "CallTo16_%s\n", profile, profile); #endif fprintf( outfile, "\t.globl " PREFIX "CallTo16_%s\n", profile ); fprintf( outfile, PREFIX "CallTo16_%s:\n", profile ); /* Entry code */ fprintf( outfile, "\tpushl %%ebp\n" ); fprintf( outfile, "\tmovl %%esp,%%ebp\n" ); /* Save the 32-bit registers */ fprintf( outfile, "\tpushl %%ebx\n" ); fprintf( outfile, "\tpushl %%ecx\n" ); fprintf( outfile, "\tpushl %%edx\n" ); fprintf( outfile, "\tpushl %%esi\n" ); fprintf( outfile, "\tpushl %%edi\n" ); /* Enter Win16 Mutex */ fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_EnterWin16Lock\n" ); /* Print debugging info */ if (debugging) { /* Push the address of the first argument */ fprintf( outfile, "\tleal 8(%%ebp),%%eax\n" ); fprintf( outfile, "\tpushl $%d\n", reg_func ? -1 : strlen(args) ); fprintf( outfile, "\tpushl %%eax\n" ); fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16\n" ); fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tpopl %%eax\n" ); } /* Call the actual CallTo16 routine (simulate a lcall) */ fprintf( outfile, "\tpushl %%cs\n" ); fprintf( outfile, "\tcall do_callto16_%s\n", profile ); fprintf( outfile, "\tpushl %%eax\n" ); /* Print debugging info */ if (debugging) { fprintf( outfile, "\tpushl %%eax\n" ); fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16Ret\n" ); fprintf( outfile, "\tpopl %%eax\n" ); } /* Leave Win16 Mutex */ fprintf( outfile, "\tcall " PREFIX "SYSLEVEL_LeaveWin16Lock\n" ); /* Restore the 32-bit registers */ fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tpopl %%edi\n" ); fprintf( outfile, "\tpopl %%esi\n" ); fprintf( outfile, "\tpopl %%edx\n" ); fprintf( outfile, "\tpopl %%ecx\n" ); fprintf( outfile, "\tpopl %%ebx\n" ); /* Exit code */ #if 0 /* FIXME: this is a hack because of task.c */ if (!strcmp( profile, "word_" )) { fprintf( outfile, ".globl " PREFIX "CALLTO16_Restore\n" ); fprintf( outfile, PREFIX "CALLTO16_Restore:\n" ); } #endif fprintf( outfile, "\tpopl %%ebp\n" ); fprintf( outfile, "\tret $%d\n", 4 * strlen(args) + 4 ); /* Start of the actual CallTo16 routine */ fprintf( outfile, "do_callto16_%s:\n", profile ); /* Save the 32-bit stack */ fprintf( outfile, "\t.byte 0x64\n\tpushl (%d)\n", STACKOFFSET ); fprintf( outfile, "\tmovl %%ebp,%%ebx\n" ); fprintf( outfile, "\tmovl %%esp,%%edx\n" ); if (reg_func) { /* Switch to the 16-bit stack, saving the current %%esp, */ /* and adding the specified offset to the new sp */ fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d),%%eax\n", STACKOFFSET ); fprintf( outfile, "\tsubl 12(%%ebx),%%eax\n" ); /* Get the offset */ #ifdef __svr4__ fprintf( outfile,"\tdata16\n"); #endif fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2); fprintf( outfile, "\tmovl %%eax,%%esp\n" ); fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET ); /* Get the registers. ebx is handled later on. */ fprintf( outfile, "\tmovl 8(%%ebx),%%ebx\n" ); fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", CONTEXTOFFSET(SegEs) ); fprintf( outfile, "\tmovw %%ax,%%es\n" ); fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", CONTEXTOFFSET(SegFs) ); fprintf( outfile, "\tmovw %%ax,%%fs\n" ); fprintf( outfile, "\tmovl %d(%%ebx),%%ebp\n", CONTEXTOFFSET(Ebp) ); fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", CONTEXTOFFSET(Eax) ); fprintf( outfile, "\tmovl %d(%%ebx),%%ecx\n", CONTEXTOFFSET(Ecx) ); fprintf( outfile, "\tmovl %d(%%ebx),%%edx\n", CONTEXTOFFSET(Edx) ); fprintf( outfile, "\tmovl %d(%%ebx),%%esi\n", CONTEXTOFFSET(Esi) ); fprintf( outfile, "\tmovl %d(%%ebx),%%edi\n", CONTEXTOFFSET(Edi) ); /* Push the return address * With sreg suffix, we push 16:16 address (normal lret) * With lreg suffix, we push 16:32 address (0x66 lret, for KERNEL32_45) */ if (reg_func == 1) fprintf( outfile, "\tpushl " PREFIX "CALLTO16_RetAddr_long\n" ); else { fprintf( outfile, "\tpushw $0\n" ); fprintf( outfile, "\tpushw " PREFIX "CALLTO16_RetAddr_eax+2\n" ); fprintf( outfile, "\tpushw $0\n" ); fprintf( outfile, "\tpushw " PREFIX "CALLTO16_RetAddr_eax\n" ); } /* Push the called routine address */ fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(SegCs) ); fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(Eip) ); /* Get the 16-bit ds */ fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(SegDs) ); /* Get ebx from the 32-bit stack */ fprintf( outfile, "\tmovl %d(%%ebx),%%ebx\n", CONTEXTOFFSET(Ebx) ); fprintf( outfile, "\tpopl %%ds\n" ); } else /* not a register function */ { int pos = 12; /* first argument position */ /* Switch to the 16-bit stack */ #ifdef __svr4__ fprintf( outfile,"\tdata16\n"); #endif fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2); fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET ); fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET ); /* Make %bp point to the previous stackframe (built by CallFrom16) */ fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" ); fprintf( outfile, "\tleal %d(%%ebp),%%ebp\n", STRUCTOFFSET(STACK16FRAME,bp) ); /* Transfer the arguments */ while (*args) { switch(*args++) { case 'w': /* word */ fprintf( outfile, "\tpushw %d(%%ebx)\n", pos ); break; case 'l': /* long */ fprintf( outfile, "\tpushl %d(%%ebx)\n", pos ); break; default: fprintf( stderr, "Unexpected case '%c' in BuildCallTo16Func\n", args[-1] ); } pos += 4; } /* Push the return address */ fprintf( outfile, "\tpushl " PREFIX "CALLTO16_RetAddr_%s\n", short_ret ? "word" : "long" ); /* Push the called routine address */ fprintf( outfile, "\tpushl 8(%%ebx)\n" ); /* Set %fs to the value saved by the last CallFrom16 */ fprintf( outfile, "\tmovw -14(%%ebp),%%ax\n" ); fprintf( outfile, "\tmovw %%ax,%%fs\n" ); /* Set %ds and %es (and %ax just in case) equal to %ss */ fprintf( outfile, "\tmovw %%ss,%%ax\n" ); fprintf( outfile, "\tmovw %%ax,%%ds\n" ); fprintf( outfile, "\tmovw %%ax,%%es\n" ); } /* Jump to the called routine */ fprintf( outfile, "\t.byte 0x66\n" ); fprintf( outfile, "\tlret\n" ); } /******************************************************************* * BuildRet16Func * * Build the return code for 16-bit callbacks */ static void BuildRet16Func( FILE *outfile ) { fprintf( outfile, "\t.globl " PREFIX "CALLTO16_Ret_word\n" ); fprintf( outfile, "\t.globl " PREFIX "CALLTO16_Ret_long\n" ); fprintf( outfile, "\t.globl " PREFIX "CALLTO16_Ret_eax\n" ); fprintf( outfile, PREFIX "CALLTO16_Ret_word:\n" ); fprintf( outfile, "\txorl %%edx,%%edx\n" ); /* Put return value into %eax */ fprintf( outfile, PREFIX "CALLTO16_Ret_long:\n" ); fprintf( outfile, "\tshll $16,%%edx\n" ); fprintf( outfile, "\tmovw %%ax,%%dx\n" ); fprintf( outfile, "\tmovl %%edx,%%eax\n" ); fprintf( outfile, PREFIX "CALLTO16_Ret_eax:\n" ); /* Restore 32-bit segment registers */ fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector ); #ifdef __svr4__ fprintf( outfile, "\tdata16\n"); #endif fprintf( outfile, "\tmovw %%bx,%%ds\n" ); #ifdef __svr4__ fprintf( outfile, "\tdata16\n"); #endif fprintf( outfile, "\tmovw %%bx,%%es\n" ); fprintf( outfile, "\tmovw " PREFIX "SYSLEVEL_Win16CurrentTeb,%%fs\n" ); /* Restore the 32-bit stack */ #ifdef __svr4__ fprintf( outfile, "\tdata16\n"); #endif fprintf( outfile, "\tmovw %%bx,%%ss\n" ); fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%esp\n", STACKOFFSET ); fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET ); /* Return to caller */ fprintf( outfile, "\tlret\n" ); /* Declare the return address variables */ fprintf( outfile, "\t.data\n" ); fprintf( outfile, "\t.globl " PREFIX "CALLTO16_RetAddr_word\n" ); fprintf( outfile, "\t.globl " PREFIX "CALLTO16_RetAddr_long\n" ); fprintf( outfile, "\t.globl " PREFIX "CALLTO16_RetAddr_eax\n" ); fprintf( outfile, PREFIX "CALLTO16_RetAddr_word:\t.long 0\n" ); fprintf( outfile, PREFIX "CALLTO16_RetAddr_long:\t.long 0\n" ); fprintf( outfile, PREFIX "CALLTO16_RetAddr_eax:\t.long 0\n" ); fprintf( outfile, "\t.text\n" ); } /******************************************************************* * BuildCallTo32CBClient * * Call a CBClient relay stub from 32-bit code (KERNEL.620). * * Since the relay stub is itself 32-bit, this should not be a problem; * unfortunately, the relay stubs are expected to switch back to a * 16-bit stack (and 16-bit code) after completion :-( * * This would conflict with our 16- vs. 32-bit stack handling, so * we simply switch *back* to our 32-bit stack before returning to * the caller ... * * The CBClient relay stub expects to be called with the following * 16-bit stack layout, and with ebp and ebx pointing into the 16-bit * stack at the designated places: * * ... * (ebp+14) original arguments to the callback routine * (ebp+10) far return address to original caller * (ebp+6) Thunklet target address * (ebp+2) Thunklet relay ID code * (ebp) BP (saved by CBClientGlueSL) * (ebp-2) SI (saved by CBClientGlueSL) * (ebp-4) DI (saved by CBClientGlueSL) * (ebp-6) DS (saved by CBClientGlueSL) * * ... buffer space used by the 16-bit side glue for temp copies * * (ebx+4) far return address to 16-bit side glue code * (ebx) saved 16-bit ss:sp (pointing to ebx+4) * * The 32-bit side glue code accesses both the original arguments (via ebp) * and the temporary copies prepared by the 16-bit side glue (via ebx). * After completion, the stub will load ss:sp from the buffer at ebx * and perform a far return to 16-bit code. * * To trick the relay stub into returning to us, we replace the 16-bit * return address to the glue code by a cs:ip pair pointing to our * return entry point (the original return address is saved first). * Our return stub thus called will then reload the 32-bit ss:esp and * return to 32-bit code (by using and ss:esp value that we have also * pushed onto the 16-bit stack before and a cs:eip values found at * that position on the 32-bit stack). The ss:esp to be restored is * found relative to the 16-bit stack pointer at: * * (ebx-4) ss (flat) * (ebx-8) sp (32-bit stack pointer) * * The second variant of this routine, CALL32_CBClientEx, which is used * to implement KERNEL.621, has to cope with yet another problem: Here, * the 32-bit side directly returns to the caller of the CBClient thunklet, * restoring registers saved by CBClientGlueSL and cleaning up the stack. * As we have to return to our 32-bit code first, we have to adapt the * layout of our temporary area so as to include values for the registers * that are to be restored, and later (in the implementation of KERNEL.621) * we *really* restore them. The return stub restores DS, DI, SI, and BP * from the stack, skips the next 8 bytes (CBClient relay code / target), * and then performs a lret NN, where NN is the number of arguments to be * removed. Thus, we prepare our temporary area as follows: * * (ebx+22) 16-bit cs (this segment) * (ebx+20) 16-bit ip ('16-bit' return entry point) * (ebx+16) 32-bit ss (flat) * (ebx+12) 32-bit sp (32-bit stack pointer) * (ebx+10) 16-bit bp (points to ebx+24) * (ebx+8) 16-bit si (ignored) * (ebx+6) 16-bit di (ignored) * (ebx+4) 16-bit ds (we actually use the flat DS here) * (ebx+2) 16-bit ss (16-bit stack segment) * (ebx+0) 16-bit sp (points to ebx+4) * * Note that we ensure that DS is not changed and remains the flat segment, * and the 32-bit stack pointer our own return stub needs fits just * perfectly into the 8 bytes that are skipped by the Windows stub. * One problem is that we have to determine the number of removed arguments, * as these have to be really removed in KERNEL.621. Thus, the BP value * that we place in the temporary area to be restored, contains the value * that SP would have if no arguments were removed. By comparing the actual * value of SP with this value in our return stub we can compute the number * of removed arguments. This is then returned to KERNEL.621. * * The stack layout of this function: * (ebp+20) nArgs pointer to variable receiving nr. of args (Ex only) * (ebp+16) esi pointer to caller's esi value * (ebp+12) arg ebp value to be set for relay stub * (ebp+8) func CBClient relay stub address * (ebp+4) ret addr * (ebp) ebp */ static void BuildCallTo32CBClient( FILE *outfile, BOOL isEx ) { char *name = isEx? "CBClientEx" : "CBClient"; int size = isEx? 24 : 12; /* Function header */ fprintf( outfile, "\n\t.align 4\n" ); #ifdef USE_STABS fprintf( outfile, ".stabs \"CALL32_%s:F1\",36,0,0," PREFIX "CALL32_%s\n", name, name ); #endif fprintf( outfile, "\t.globl " PREFIX "CALL32_%s\n", name ); fprintf( outfile, PREFIX "CALL32_%s:\n", name ); /* Entry code */ fprintf( outfile, "\tpushl %%ebp\n" ); fprintf( outfile, "\tmovl %%esp,%%ebp\n" ); fprintf( outfile, "\tpushl %%edi\n" ); fprintf( outfile, "\tpushl %%esi\n" ); fprintf( outfile, "\tpushl %%ebx\n" ); /* Get the 16-bit stack */ fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET); /* Convert it to a flat address */ fprintf( outfile, "\tshldl $16,%%ebx,%%eax\n" ); fprintf( outfile, "\tandl $0xfff8,%%eax\n" ); fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%esi\n" ); fprintf( outfile, "\tmovw %%bx,%%ax\n" ); fprintf( outfile, "\taddl %%eax,%%esi\n" ); /* Allocate temporary area (simulate STACK16_PUSH) */ fprintf( outfile, "\tpushf\n" ); fprintf( outfile, "\tcld\n" ); fprintf( outfile, "\tleal -%d(%%esi), %%edi\n", size ); fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) ); fprintf( outfile, "\trep\n\tmovsb\n" ); fprintf( outfile, "\tpopf\n" ); fprintf( outfile, "\t.byte 0x64\n\tsubw $%d,(%d)\n", size, STACKOFFSET ); fprintf( outfile, "\tpushl %%edi\n" ); /* remember address */ /* Set up temporary area */ if ( !isEx ) { fprintf( outfile, "\tleal 4(%%edi), %%edi\n" ); fprintf( outfile, "\tleal -8(%%esp), %%eax\n" ); fprintf( outfile, "\tmovl %%eax, -8(%%edi)\n" ); /* 32-bit sp */ fprintf( outfile, "\tmovl %%ss, %%ax\n" ); fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" ); fprintf( outfile, "\tmovl %%eax, -4(%%edi)\n" ); /* 32-bit ss */ fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 + 4 ); fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" ); /* 16-bit ss:sp */ fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name ); fprintf( outfile, "\tmovl %%eax, 4(%%edi)\n" ); /* overwrite return address */ } else { fprintf( outfile, "\taddl $%d, %%ebx\n", sizeof(STACK16FRAME)-size+4 ); fprintf( outfile, "\tmovl %%ebx, 0(%%edi)\n" ); fprintf( outfile, "\tmovl %%ds, %%ax\n" ); fprintf( outfile, "\tmovw %%ax, 4(%%edi)\n" ); fprintf( outfile, "\taddl $20, %%ebx\n" ); fprintf( outfile, "\tmovw %%bx, 10(%%edi)\n" ); fprintf( outfile, "\tleal -8(%%esp), %%eax\n" ); fprintf( outfile, "\tmovl %%eax, 12(%%edi)\n" ); fprintf( outfile, "\tmovl %%ss, %%ax\n" ); fprintf( outfile, "\tandl $0x0000ffff, %%eax\n" ); fprintf( outfile, "\tmovl %%eax, 16(%%edi)\n" ); fprintf( outfile, "\tmovl " PREFIX "CALL32_%s_RetAddr, %%eax\n", name ); fprintf( outfile, "\tmovl %%eax, 20(%%edi)\n" ); } /* Set up registers and call CBClient relay stub (simulating a far call) */ fprintf( outfile, "\tmovl 16(%%ebp), %%esi\n" ); fprintf( outfile, "\tmovl (%%esi), %%esi\n" ); fprintf( outfile, "\tmovl %%edi, %%ebx\n" ); fprintf( outfile, "\tmovl 8(%%ebp), %%eax\n" ); fprintf( outfile, "\tmovl 12(%%ebp), %%ebp\n" ); fprintf( outfile, "\tpushl %%cs\n" ); fprintf( outfile, "\tcall *%%eax\n" ); /* Return new esi value to caller */ fprintf( outfile, "\tmovl 32(%%esp), %%edi\n" ); fprintf( outfile, "\tmovl %%esi, (%%edi)\n" ); /* Cleanup temporary area (simulate STACK16_POP) */ fprintf( outfile, "\tpop %%esi\n" ); fprintf( outfile, "\tpushf\n" ); fprintf( outfile, "\tstd\n" ); fprintf( outfile, "\tdec %%esi\n" ); fprintf( outfile, "\tleal %d(%%esi), %%edi\n", size ); fprintf( outfile, "\tmovl $%d, %%ecx\n", sizeof(STACK16FRAME) ); fprintf( outfile, "\trep\n\tmovsb\n" ); fprintf( outfile, "\tpopf\n" ); fprintf( outfile, "\t.byte 0x64\n\taddw $%d,(%d)\n", size, STACKOFFSET ); /* Return argument size to caller */ if ( isEx ) { fprintf( outfile, "\tmovl 32(%%esp), %%ebx\n" ); fprintf( outfile, "\tmovl %%ebp, (%%ebx)\n" ); } /* Restore registers and return */ fprintf( outfile, "\tpopl %%ebx\n" ); fprintf( outfile, "\tpopl %%esi\n" ); fprintf( outfile, "\tpopl %%edi\n" ); fprintf( outfile, "\tpopl %%ebp\n" ); fprintf( outfile, "\tret\n" ); /* '16-bit' return stub */ fprintf( outfile, "\t.globl " PREFIX "CALL32_%s_Ret\n", name ); fprintf( outfile, PREFIX "CALL32_%s_Ret:\n", name ); if ( !isEx ) { fprintf( outfile, "\tmovzwl %%sp, %%ebx\n" ); fprintf( outfile, "\tlssl %%ss:-16(%%ebx), %%esp\n" ); } else { fprintf( outfile, "\tmovzwl %%bp, %%ebx\n" ); fprintf( outfile, "\tsubw %%bp, %%sp\n" ); fprintf( outfile, "\tmovzwl %%sp, %%ebp\n" ); fprintf( outfile, "\tlssl %%ss:-12(%%ebx), %%esp\n" ); } fprintf( outfile, "\tlret\n" ); /* Declare the return address variable */ fprintf( outfile, "\t.data\n" ); fprintf( outfile, "\t.globl " PREFIX "CALL32_%s_RetAddr\n", name ); fprintf( outfile, PREFIX "CALL32_%s_RetAddr:\t.long 0\n", name ); fprintf( outfile, "\t.text\n" ); } /******************************************************************* * BuildCallTo32LargeStack * * Build the function used to switch to the original 32-bit stack * before calling a 32-bit function from 32-bit code. This is used for * functions that need a large stack, like X bitmaps functions. * * The generated function has the following prototype: * int xxx( int (*func)(), void *arg ); * * The pointer to the function can be retrieved by calling CALL32_Init, * which also takes care of saving the current 32-bit stack pointer. * Furthermore, CALL32_Init switches to a new stack and jumps to the * specified target address. * * NOTE: The CALL32_LargeStack routine may be recursively entered by the * same thread, but not concurrently entered by several threads. * * Stack layout of CALL32_Init: * * (esp+12) new stack address * (esp+8) target address * (esp+4) pointer to variable to receive CALL32_LargeStack address * (esp) ret addr * * Stack layout of CALL32_LargeStack: * ... ... * (ebp+12) arg * (ebp+8) func * (ebp+4) ret addr * (ebp) ebp */ static void BuildCallTo32LargeStack( FILE *outfile ) { /* Initialization function */ fprintf( outfile, "\n\t.align 4\n" ); #ifdef USE_STABS fprintf( outfile, ".stabs \"CALL32_Init:F1\",36,0,0," PREFIX "CALL32_Init\n"); #endif fprintf( outfile, "\t.globl " PREFIX "CALL32_Init\n" ); fprintf( outfile, "\t.type " PREFIX "CALL32_Init,@function\n" ); fprintf( outfile, PREFIX "CALL32_Init:\n" ); fprintf( outfile, "\tmovl %%esp,CALL32_Original32_esp\n" ); fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tmovl $CALL32_LargeStack,(%%eax)\n" ); fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tpopl %%esp\n" ); fprintf( outfile, "\tpushl %%eax\n" ); fprintf( outfile, "\tret\n" ); /* Function header */ fprintf( outfile, "\n\t.align 4\n" ); #ifdef USE_STABS fprintf( outfile, ".stabs \"CALL32_LargeStack:F1\",36,0,0,CALL32_LargeStack\n"); #endif fprintf( outfile, "CALL32_LargeStack:\n" ); /* Entry code */ fprintf( outfile, "\tpushl %%ebp\n" ); fprintf( outfile, "\tmovl %%esp,%%ebp\n" ); /* Switch to the original 32-bit stack pointer */ fprintf( outfile, "\tcmpl $0, CALL32_RecursionCount\n" ); fprintf( outfile, "\tjne CALL32_skip\n" ); fprintf( outfile, "\tmovl CALL32_Original32_esp, %%esp\n" ); fprintf( outfile, "CALL32_skip:\n" ); fprintf( outfile, "\tincl CALL32_RecursionCount\n" ); /* Transfer the argument and call the function */ fprintf( outfile, "\tpushl 12(%%ebp)\n" ); fprintf( outfile, "\tcall *8(%%ebp)\n" ); /* Restore registers and return */ fprintf( outfile, "\tdecl CALL32_RecursionCount\n" ); fprintf( outfile, "\tmovl %%ebp,%%esp\n" ); fprintf( outfile, "\tpopl %%ebp\n" ); fprintf( outfile, "\tret\n" ); /* Data */ fprintf( outfile, "\t.data\n" ); fprintf( outfile, "CALL32_Original32_esp:\t.long 0\n" ); fprintf( outfile, "CALL32_RecursionCount:\t.long 0\n" ); fprintf( outfile, "\t.text\n" ); } /******************************************************************* * BuildCallFrom32Regs * * Build a 32-bit-to-Wine call-back function for a 'register' function. * 'args' is the number of dword arguments. * * Stack layout: * ... * (ebp+12) first arg * (ebp+8) ret addr to user code * (ebp+4) ret addr to relay code * (ebp+0) saved ebp * (ebp-128) buffer area to allow stack frame manipulation * (ebp-332) CONTEXT struct * (ebp-336) CONTEXT *argument * .... other arguments copied from (ebp+12) * * The entry point routine is called with a CONTEXT* extra argument, * following the normal args. In this context structure, EIP_reg * contains the return address to user code, and ESP_reg the stack * pointer on return (with the return address and arguments already * removed). */ static void BuildCallFrom32Regs( FILE *outfile ) { static const int STACK_SPACE = 128 + sizeof(CONTEXT); /* Function header */ fprintf( outfile, "\n\t.align 4\n" ); #ifdef USE_STABS fprintf( outfile, ".stabs \"CALL32_Regs:F1\",36,0,0," PREFIX "CALL32_Regs\n" ); #endif fprintf( outfile, "\t.globl " PREFIX "CALL32_Regs\n" ); fprintf( outfile, PREFIX "CALL32_Regs:\n" ); /* Allocate some buffer space on the stack */ fprintf( outfile, "\tpushl %%ebp\n" ); fprintf( outfile, "\tmovl %%esp,%%ebp\n "); fprintf( outfile, "\tleal -%d(%%esp), %%esp\n", STACK_SPACE ); /* Build the context structure */ fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eax) - STACK_SPACE ); fprintf( outfile, "\tpushfl\n" ); fprintf( outfile, "\tpopl %%eax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(EFlags) - STACK_SPACE ); fprintf( outfile, "\tmovl 0(%%ebp),%%eax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Ebp) - STACK_SPACE ); fprintf( outfile, "\tmovl %%ebx,%d(%%ebp)\n", CONTEXTOFFSET(Ebx) - STACK_SPACE ); fprintf( outfile, "\tmovl %%ecx,%d(%%ebp)\n", CONTEXTOFFSET(Ecx) - STACK_SPACE ); fprintf( outfile, "\tmovl %%edx,%d(%%ebp)\n", CONTEXTOFFSET(Edx) - STACK_SPACE ); fprintf( outfile, "\tmovl %%esi,%d(%%ebp)\n", CONTEXTOFFSET(Esi) - STACK_SPACE ); fprintf( outfile, "\tmovl %%edi,%d(%%ebp)\n", CONTEXTOFFSET(Edi) - STACK_SPACE ); fprintf( outfile, "\txorl %%eax,%%eax\n" ); fprintf( outfile, "\tmovw %%cs,%%ax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegCs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%es,%%ax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegEs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%fs,%%ax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegFs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%gs,%%ax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegGs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%ss,%%ax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegSs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%ds,%%ax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(SegDs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%ax,%%es\n" ); /* set %es equal to %ds just in case */ fprintf( outfile, "\tmovl $0x%x,%%eax\n", CONTEXT_FULL ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(ContextFlags) - STACK_SPACE ); fprintf( outfile, "\tmovl 8(%%ebp),%%eax\n" ); /* Get %eip at time of call */ fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Eip) - STACK_SPACE ); /* Transfer the arguments */ fprintf( outfile, "\tmovl 4(%%ebp),%%ebx\n" ); /* get relay code addr */ fprintf( outfile, "\tpushl %%esp\n" ); /* push ptr to context struct */ fprintf( outfile, "\tmovzbl 4(%%ebx),%%ecx\n" ); /* fetch number of args to copy */ fprintf( outfile, "\tjecxz 1f\n" ); fprintf( outfile, "\tsubl %%ecx,%%esp\n" ); fprintf( outfile, "\tleal 12(%%ebp),%%esi\n" ); /* get %esp at time of call */ fprintf( outfile, "\tmovl %%esp,%%edi\n" ); fprintf( outfile, "\tshrl $2,%%ecx\n" ); fprintf( outfile, "\tcld\n" ); fprintf( outfile, "\trep\n\tmovsl\n" ); /* copy args */ fprintf( outfile, "1:\tmovzbl 5(%%ebx),%%eax\n" ); /* fetch number of args to remove */ fprintf( outfile, "\tleal 12(%%ebp,%%eax),%%eax\n" ); fprintf( outfile, "\tmovl %%eax,%d(%%ebp)\n", CONTEXTOFFSET(Esp) - STACK_SPACE ); /* Call the entry point */ fprintf( outfile, "\tcall *0(%%ebx)\n" ); /* Store %eip and %ebp onto the new stack */ fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Esp) - STACK_SPACE ); fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eip) - STACK_SPACE ); fprintf( outfile, "\tmovl %%eax,-4(%%edx)\n" ); fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Ebp) - STACK_SPACE ); fprintf( outfile, "\tmovl %%eax,-8(%%edx)\n" ); /* Restore the context structure */ /* Note: we don't bother to restore %cs, %ds and %ss * changing them in 32-bit code is a recipe for disaster anyway */ fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegEs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%ax,%%es\n" ); fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegFs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%ax,%%fs\n" ); fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(SegGs) - STACK_SPACE ); fprintf( outfile, "\tmovw %%ax,%%gs\n" ); fprintf( outfile, "\tmovl %d(%%ebp),%%edi\n", CONTEXTOFFSET(Edi) - STACK_SPACE ); fprintf( outfile, "\tmovl %d(%%ebp),%%esi\n", CONTEXTOFFSET(Esi) - STACK_SPACE ); fprintf( outfile, "\tmovl %d(%%ebp),%%edx\n", CONTEXTOFFSET(Edx) - STACK_SPACE ); fprintf( outfile, "\tmovl %d(%%ebp),%%ecx\n", CONTEXTOFFSET(Ecx) - STACK_SPACE ); fprintf( outfile, "\tmovl %d(%%ebp),%%ebx\n", CONTEXTOFFSET(Ebx) - STACK_SPACE ); fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(EFlags) - STACK_SPACE ); fprintf( outfile, "\tpushl %%eax\n" ); fprintf( outfile, "\tpopfl\n" ); fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", CONTEXTOFFSET(Eax) - STACK_SPACE ); fprintf( outfile, "\tmovl %d(%%ebp),%%ebp\n", CONTEXTOFFSET(Esp) - STACK_SPACE ); fprintf( outfile, "\tleal -8(%%ebp),%%esp\n" ); fprintf( outfile, "\tpopl %%ebp\n" ); fprintf( outfile, "\tret\n" ); } /******************************************************************* * BuildSpec * * Build the spec files */ static int BuildSpec( FILE *outfile, int argc, char *argv[] ) { int i; for (i = 2; i < argc; i++) if (BuildSpecFile( outfile, argv[i] ) < 0) return -1; return 0; } /******************************************************************* * BuildCallFrom16 * * Build the 16-bit-to-Wine callbacks */ static int BuildCallFrom16( FILE *outfile, char * outname, int argc, char *argv[] ) { int i; char buffer[1024]; /* File header */ fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" ); fprintf( outfile, "\t.text\n" ); #ifdef USE_STABS fprintf( outfile, "\t.file\t\"%s\"\n", outname ); getcwd(buffer, sizeof(buffer)); /* * The stabs help the internal debugger as they are an indication that it * is sensible to step into a thunk/trampoline. */ fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer); fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname); fprintf( outfile, "\t.text\n" ); fprintf( outfile, "\t.align 4\n" ); fprintf( outfile, "Code_Start:\n\n" ); #endif fprintf( outfile, PREFIX"CallFrom16_Start:\n" ); fprintf( outfile, "\t.globl "PREFIX"CallFrom16_Start\n" ); /* Build the callback functions */ for (i = 2; i < argc; i++) BuildCallFrom16Func( outfile, argv[i] ); /* Build the thunk callback function */ BuildCallFrom16Func( outfile, "t_long_" ); /* Output the argument debugging strings */ if (debugging) { fprintf( outfile, "/* Argument strings */\n" ); for (i = 2; i < argc; i++) { fprintf( outfile, "Profile_%s:\t", argv[i] ); fprintf( outfile, STRING " \"%s\\0\"\n", argv[i] + 7 ); } } fprintf( outfile, PREFIX"CallFrom16_End:\n" ); fprintf( outfile, "\t.globl "PREFIX"CallFrom16_End\n" ); #ifdef USE_STABS fprintf( outfile, "\t.text\n"); fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n"); fprintf( outfile, ".Letext:\n"); #endif return 0; } /******************************************************************* * BuildCallTo16 * * Build the Wine-to-16-bit callbacks */ static int BuildCallTo16( FILE *outfile, char * outname, int argc, char *argv[] ) { char buffer[1024]; FILE *infile; if (argc > 2) { infile = fopen( argv[2], "r" ); if (!infile) { perror( argv[2] ); exit( 1 ); } } else infile = stdin; /* File header */ fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" ); fprintf( outfile, "\t.text\n" ); #ifdef USE_STABS fprintf( outfile, "\t.file\t\"%s\"\n", outname ); getcwd(buffer, sizeof(buffer)); /* * The stabs help the internal debugger as they are an indication that it * is sensible to step into a thunk/trampoline. */ fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer); fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname); fprintf( outfile, "\t.text\n" ); fprintf( outfile, "\t.align 4\n" ); fprintf( outfile, "Code_Start:\n\n" ); #endif fprintf( outfile, "\t.globl " PREFIX "CALLTO16_Start\n" ); fprintf( outfile, PREFIX "CALLTO16_Start:\n" ); /* Build the callback functions */ while (fgets( buffer, sizeof(buffer), infile )) { if (strstr( buffer, "### start build ###" )) break; } while (fgets( buffer, sizeof(buffer), infile )) { char *p = strstr( buffer, "CallTo16_" ); if (p) { char *profile = p + strlen( "CallTo16_" ); p = profile; while ((*p == '_') || isalpha(*p)) p++; *p = '\0'; BuildCallTo16Func( outfile, profile ); } if (strstr( buffer, "### stop build ###" )) break; } /* Output the 16-bit return code */ BuildRet16Func( outfile ); /* Output the CBClient callback functions * (while this does not really 'call to 16-bit' code, it is placed * here so that its 16-bit return stub is defined within the CALLTO16 * 16-bit segment) */ BuildCallTo32CBClient( outfile, FALSE ); BuildCallTo32CBClient( outfile, TRUE ); fprintf( outfile, "\t.globl " PREFIX "CALLTO16_End\n" ); fprintf( outfile, PREFIX "CALLTO16_End:\n" ); #ifdef USE_STABS fprintf( outfile, "\t.text\n"); fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n"); fprintf( outfile, ".Letext:\n"); #endif fclose( infile ); return 0; } /******************************************************************* * BuildCall32 * * Build the 32-bit callbacks */ static int BuildCall32( FILE *outfile, char * outname ) { char buffer[1024]; /* File header */ fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" ); fprintf( outfile, "\t.text\n" ); #ifdef __i386__ #ifdef USE_STABS fprintf( outfile, "\t.file\t\"%s\"\n", outname ); getcwd(buffer, sizeof(buffer)); /* * The stabs help the internal debugger as they are an indication that it * is sensible to step into a thunk/trampoline. */ fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer); fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname); fprintf( outfile, "\t.text\n" ); fprintf( outfile, "\t.align 4\n" ); fprintf( outfile, "Code_Start:\n" ); #endif /* Build the 32-bit large stack callback */ BuildCallTo32LargeStack( outfile ); /* Build the register callback function */ BuildCallFrom32Regs( outfile ); #ifdef USE_STABS fprintf( outfile, "\t.text\n"); fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n"); fprintf( outfile, ".Letext:\n"); #endif #else /* __i386__ */ /* Just to avoid an empty file */ fprintf( outfile, "\t.long 0\n" ); #endif /* __i386__ */ return 0; } /******************************************************************* * usage */ static void usage(void) { fprintf( stderr, "usage: build [-o outfile] -spec SPECNAMES\n" " build [-o outfile] -callfrom16 FUNCTION_PROFILES\n" " build [-o outfile] -callto16 FUNCTION_PROFILES\n" " build [-o outfile] -call32\n" ); exit(1); } /******************************************************************* * main */ int main(int argc, char **argv) { char *outname = NULL; FILE *outfile = stdout; int res = -1; if (argc < 2) usage(); if (!strcmp( argv[1], "-o" )) { outname = argv[2]; argv += 2; argc -= 2; if (argc < 2) usage(); if (!(outfile = fopen( outname, "w" ))) { fprintf( stderr, "Unable to create output file '%s'\n", outname ); exit(1); } } /* Retrieve the selector values; this assumes that we are building * the asm files on the platform that will also run them. Probably * a safe assumption to make. */ GET_CS( Code_Selector ); GET_DS( Data_Selector ); if (!strcmp( argv[1], "-spec" )) res = BuildSpec( outfile, argc, argv ); else if (!strcmp( argv[1], "-callfrom16" )) res = BuildCallFrom16( outfile, outname, argc, argv ); else if (!strcmp( argv[1], "-callto16" )) res = BuildCallTo16( outfile, outname, argc, argv ); else if (!strcmp( argv[1], "-call32" )) res = BuildCall32( outfile, outname ); else { fclose( outfile ); unlink( outname ); usage(); } fclose( outfile ); if (res < 0) { unlink( outname ); return 1; } return 0; }