| unsigned long long textAddress = 0;␊ |
| unsigned long long textSection = 0;␊ |
| ␊ |
| void* symbols_module_start = (void*)0xFFFFFFFF;␉// This will be modified post compile␊ |
| void* symbols_module_start = (void*)0xFFFFFFFF;␉// TGlobal, value is populated by the makefile with actual address␊ |
| ␊ |
| /** Internal symbols, however there are accessor methods **/␊ |
| moduleHook_t* moduleCallbacks = NULL;␊ |
|
| */␊ |
| int init_module_system()␊ |
| {␊ |
| ␉int retVal = 0;␊ |
| ␉void (*module_start)(void) = NULL;␊ |
| ␉char* module_data = symbols_module_start + BOOT2_ADDR;␊ |
| ␊ |
| ␉// Intialize module system␊ |
| ␉if(symbols_module_start == (void*)0xFFFFFFFF)␊ |
| ␉if(symbols_module_start != (void*)0xFFFFFFFF)␊ |
| ␉{␊ |
| ␉␉return 0;␉// Module system (Symbols.dylib) was not compiled in␊ |
| ␉}␊ |
| ␊ |
| ␉module_start = parse_mach(module_data, &load_module, &add_symbol);␊ |
| ␉␊ |
| ␉if(module_start && module_start != (void*)0xFFFFFFFF)␊ |
| ␉{␊ |
| ␉␉// Notify the system that it was laoded␊ |
| ␉␉module_loaded(SYMBOLS_MODULE /*moduleName, moduleVersion, moduleCompat*/);␊ |
| ␊ |
| ␉␉lookup_symbol = (void*)lookup_all_symbols(SYMBOL_LOOKUP_SYMBOL);␊ |
| ␉␉// Module system was compiled in (Symbols.dylib addr known)␊ |
| ␉␉module_start = parse_mach(module_data, &load_module, &add_symbol);␊ |
| ␉␉␊ |
| ␉␉if((UInt32)lookup_symbol != 0xFFFFFFFF)␊ |
| ␉␉if(module_start && module_start != (void*)0xFFFFFFFF)␊ |
| ␉␉{␊ |
| ␉␉␉(*module_start)();␉// Start the module␊ |
| ␉␉␉// Notify the system that it was laoded␊ |
| ␉␉␉module_loaded(SYMBOLS_MODULE /*moduleName, moduleVersion, moduleCompat*/);␊ |
| ␉␉␉␊ |
| ␉␉␉(*module_start)();␉// Start the module. This will point to load_all_modules due to the way the dylib was constructed.␊ |
| ␉␉␉execute_hook("ModulesLoaded", NULL, NULL, NULL, NULL);␊ |
| ␉␉␉DBG("Module %s Loaded.\n", SYMBOLS_MODULE);␊ |
| ␉␉␉return 1;␊ |
| ␉␉␉retVal = 1;␊ |
| ␊ |
| ␉␉}␊ |
| ␉␉else␊ |
| ␉␉{␊ |
| ␉␉␉// The module does not have a valid start function␊ |
| ␉␉␉printf("Unable to start %s\n", SYMBOLS_MODULE); getc();␊ |
| ␉␉}␉␉␊ |
| ␉}␊ |
| ␉else␊ |
| ␉{␊ |
| ␉␉// The module does not have a valid start function␊ |
| ␉␉printf("Unable to start %s\n", SYMBOLS_MODULE); getc();␊ |
| ␉}␉␉␊ |
| ␉return 0;␊ |
| ␉return retVal;␊ |
| }␊ |
| ␊ |
| ␊ |
| /*␊ |
| * Load all modules in the /Extra/modules/ directory␊ |
| * Module depencdies will be loaded first␊ |
| * MOdules will only be loaded once. When loaded a module must␊ |
| * Modules will only be loaded once. When loaded a module must␊ |
| * setup apropriete function calls and hooks as required.␊ |
| * NOTE: To ensure a module loads after another you may ␊ |
| * link one module with the other. For dyld to allow this, you must␊ |
|
| ␊ |
| /*␊ |
| * Load a module file in /Extra/modules␊ |
| * TODO: verify version number of module␊ |
| */␊ |
| int load_module(char* module)␊ |
| {␊ |
| ␉int retVal = 1;␊ |
| ␉void (*module_start)(void) = NULL;␊ |
| ␉char modString[128];␊ |
| ␉int fh = -1;␊ |
| ␊ |
| ␉␊ |
| ␉// Check to see if the module has already been loaded␊ |
| ␉if(is_module_loaded(module))␊ |
| ␉{␊ |
| ␉␉return 1;␊ |
| ␉}␊ |
| ␉␊ |
| ␉char modString[128];␊ |
| ␉int fh = -1;␊ |
| ␉sprintf(modString, "/Extra/modules/%s", module);␊ |
| ␉sprintf(modString, MODULE_PATH "%s", module);␊ |
| ␉fh = open(modString, 0);␊ |
| ␉if(fh < 0)␊ |
| ␉{␊ |
| ␉␉printf("Unable to locate module %s\n", modString); DBGPAUSE();␊ |
| ␉␉getc();␊ |
| ␉␉printf("WARNING: Unable to locate module %s\n", modString); DBGPAUSE();␊ |
| ␉␉return 0;␊ |
| ␉}␊ |
| ␉␊ |
|
| ␉char* module_base = (char*) malloc(moduleSize);␊ |
| ␉if (moduleSize && read(fh, module_base, moduleSize) == moduleSize)␊ |
| ␉{␊ |
| ␊ |
| ␉␉//DBG("Module %s read in.\n", modString);␊ |
| ␊ |
| ␉␉// Module loaded into memory, parse it␊ |
| ␉␉module_start = parse_mach(module_base, &load_module, &add_symbol);␊ |
| ␊ |
|
| ␉␉{␊ |
| ␉␉␉// Notify the system that it was laoded␊ |
| ␉␉␉module_loaded(module/*moduleName, moduleVersion, moduleCompat*/);␊ |
| ␊ |
| ␉␉␉(*module_start)();␉// Start the module␊ |
| ␉␉␉DBG("Module %s Loaded.\n", module); DBGPAUSE();␊ |
| ␉␉␉␊ |
| ␉␉␉//module_entry = malloc(sizeof(moduleList_t); TODO: mode to module_loaded␊ |
| ␉␉␉␉␉␉␉␊ |
| ␉␉}␊ |
| ␉␉else {␊ |
| ␉␉␉// The module does not have a valid start function␊ |
| ␉␉␉printf("Unable to start %s\n", module);␊ |
| #if DEBUG_MODULES␊ |
| ␉␉else // The module does not have a valid start function. This may be a library.␊ |
| ␉␉{␊ |
| ␉␉␉printf("WARNING: Unable to start %s\n", module);␊ |
| ␉␉␉getc();␊ |
| ␉␉}␉␉␊ |
| ␉␉}␊ |
| #else␊ |
| ␉␉else msglog("WARNING: Unable to start %s\n", module);␊ |
| #endif␊ |
| ␉}␊ |
| ␉else␊ |
| ␉{␊ |
| ␉␉DBG("Unable to read in module %s\n.", module);␊ |
| ␉␉getc();␊ |
| ␉␉DBG("Unable to read in module %s\n.", module); DBGPAUSE();␊ |
| ␉␉retVal = 0;␊ |
| ␉}␊ |
| ␉close(fh);␊ |
| ␊ |
| ␉return 1;␊ |
| ␉close(fh);␊ |
| ␉return retVal;␊ |
| }␊ |
| ␊ |
| /*␊ |
|
| ␉symbolList_t* entry;␊ |
| ␉//DBG("Adding symbol %s at 0x%X\n", symbol, addr);␊ |
| ␉␊ |
| ␉if(!moduleSymbols)␊ |
| ␉{␊ |
| ␉␉moduleSymbols = entry = malloc(sizeof(symbolList_t));␊ |
| ␊ |
| ␉}␊ |
| ␉else␊ |
| ␉{␊ |
| ␉␉entry = moduleSymbols;␊ |
| ␉␉while(entry->next)␊ |
| ␉␉{␊ |
| ␉␉␉entry = entry->next;␊ |
| ␉␉}␊ |
| ␉␉␊ |
| ␉␉entry->next = malloc(sizeof(symbolList_t));␊ |
| ␉␉entry = entry->next;␊ |
| ␉}␊ |
| ␊ |
| ␉entry->next = NULL;␊ |
| ␉entry = malloc(sizeof(symbolList_t));␊ |
| ␉entry->next = moduleSymbols;␊ |
| ␉moduleSymbols = entry;␊ |
| ␉␊ |
| ␉entry->addr = (UInt32)addr;␊ |
| ␉entry->symbol = symbol;␊ |
| ␉␊ |
| ␉if(strcmp(symbol, "start") == 0)␊ |
| ␉{␊ |
| ␉␉return addr;␊ |
|
| */␊ |
| void module_loaded(const char* name/*, UInt32 version, UInt32 compat*/)␊ |
| {␊ |
| ␉// TODO: insert sorted␊ |
| ␉moduleList_t* new_entry = malloc(sizeof(moduleList_t));␊ |
| ␊ |
| ␉new_entry->next = loadedModules;␊ |
| ␊ |
| ␉loadedModules = new_entry;␊ |
| ␉␊ |
| ␉new_entry->name = (char*)name;␊ |
| ␉new_entry->base_addr = NULL;␉␉// TODO␊ |
| ␉// todo; symbols␊ |
| ␉new_entry->version = 0; //version;␊ |
| ␉new_entry->compat = 0; //compat;␊ |
| //␉new_entry->version = version;␊ |
| //␉new_entry->compat = compat;␊ |
| }␊ |
| ␊ |
| int is_module_loaded(const char* name)␊ |
|
| ␉␉}␊ |
| ␊ |
| ␉}␊ |
| ␉␊ |
| ␉DBG("Module %s not found\n", name); DBGPAUSE();␊ |
| ␊ |
| ␉return 0;␊ |
| }␊ |
| ␊ |
| // Look for symbols using the Smbols moduel function.␊ |
| // If non are found, look through the list of module symbols␊ |
| /*␊ |
| *␉lookup symbols in all loaded modules. Thins inludes boot syms due to Symbols.dylib construction␊ |
| *␊ |
| */␊ |
| unsigned int lookup_all_symbols(const char* name)␊ |
| {␊ |
| ␉unsigned int addr = 0xFFFFFFFF;␊ |
| ␉symbolList_t* entry = moduleSymbols;␊ |
| ␉while(entry)␊ |
| ␉{␊ |
|
| ␉␉{␊ |
| ␉␉␉entry = entry->next;␊ |
| ␉␉}␊ |
| ␊ |
| ␉}␊ |
| ␉␊ |
| ␉if(lookup_symbol && (UInt32)lookup_symbol != 0xFFFFFFFF)␊ |
| ␉{␊ |
| ␉␉addr = lookup_symbol(name);␊ |
| ␉␉if(addr != 0xFFFFFFFF)␊ |
| ␉␉{␊ |
| ␉␉␉//DBG("Internal symbol %s located at 0x%X\n", name, addr);␊ |
| ␉␉␉return addr;␊ |
| ␉␉}␊ |
| ␉}␊ |
| ␉␊ |
| ␊ |
| #if DEBUG_MODULES␊ |
| ␉verbose("Unable to locate symbol %s\n", name);␊ |
| ␉getc();␊ |
