#include <modules.h>
#define USE_EDI 0
-#define USE_UDI 1
+#define USE_UDI 0
// === PROTOTYPES ===
- int Modules_LoadBuiltins();
- int Module_LoadMem(void *Buffer, Uint Length, char *ArgString);
- int Module_LoadFile(char *Path, char *ArgString);
+ int Module_int_Initialise(tModule *Module, const char *ArgString);
+void Modules_int_GetBuiltinArray(void);
+void Modules_LoadBuiltins(void);
+void Modules_SetBuiltinParams(const char *Name, char *ArgString);
+ int Modules_InitialiseBuiltin(const char *Name);
+// int Module_RegisterLoader(tModuleLoader *Loader);
+// int Module_LoadMem(void *Buffer, Uint Length, char *ArgString);
+// int Module_LoadFile(char *Path, char *ArgString);
int Module_int_ResolveDeps(tModule *Info);
- int Module_IsLoaded(char *Name);
+ int Module_IsLoaded(const char *Name);
+// int Module_EnsureLoaded(const char *Name);
+
+// === EXPORTS ===
+EXPORT(Module_RegisterLoader);
// === IMPORTS ===
#if USE_UDI
extern int UDI_LoadDriver(void *Base);
#endif
-extern void StartupPrint(char *Str);
-extern tModule gKernelModules[];
-extern void gKernelModulesEnd;
+extern void StartupPrint(const char *Str);
+extern tModule gKernelModules;
+extern tModule gKernelModulesEnd;
// === GLOBALS ===
int giNumBuiltinModules = 0;
- int giModuleSpinlock = 0;
+tShortSpinlock glModuleSpinlock;
tModule *gLoadedModules = NULL;
tModuleLoader *gModule_Loaders = NULL;
tModule *gLoadingModules = NULL;
+tModule **gapBuiltinModules = NULL;
+char **gasBuiltinModuleArgs;
// === CODE ===
-int Module_int_Initialise(tModule *Module)
+/**
+ * \brief Initialises a module
+ * \param Module Pointer to the module header
+ * \param ArgString Comma separated list of module arguments
+ * \return Zero on success, eModuleErrors or -1 on error
+ * \retval -1 Returned if a dependency fails, or a circular dependency
+ * exists.
+ * \retval 0 Returned on success
+ * \retval >0 Error code form the module's initialisation function
+ */
+int Module_int_Initialise(tModule *Module, const char *ArgString)
{
int i, j;
int ret;
- char **deps;
+ const char **deps;
+ char **args;
tModule *mod;
ENTER("pModule", Module);
+ LOG("Module->Magic = 0x%x", Module->Magic);
+ if(Module->Magic != MODULE_MAGIC) {
+ Log_Warning(
+ "Module",
+ "Module %p is no a valid Acess2 module (0x%08x != 0x%08x)",
+ Module, Module->Magic, MODULE_MAGIC
+ );
+ LEAVE('i', MODULE_ERR_BADMODULE);
+ return MODULE_ERR_BADMODULE;
+ }
+ LOG("Module->Name = %p \"%s\"", Module->Name, Module->Name);
+
+ if(Module->Arch != MODULE_ARCH_ID) {
+ Log_Warning(
+ "Module",
+ "Module %p (%s) is for another architecture (%i)",
+ Module, Module->Name, Module->Arch
+ );
+ }
deps = Module->Dependencies;
break;
}
if( mod ) {
- Warning("[MOD ] Circular dependency detected");
+ Log_Warning("Module", "Circular dependency detected (%s and %s)",
+ mod->Name, Module->Name);
LEAVE_RET('i', -1);
}
// So, if it's not loaded, we better load it then
for( i = 0; i < giNumBuiltinModules; i ++ )
{
- if( strcmp(deps[j], gKernelModules[i].Name) == 0 )
+ if( strcmp(deps[j], gapBuiltinModules[i]->Name) == 0 )
break;
}
if( i == giNumBuiltinModules ) {
- Warning("[MOD ] Dependency '%s' for module '%s' failed");
+ Log_Warning("Module", "Dependency '%s' for module '%s' failed",
+ deps[j], Module->Name);
return -1;
}
// Dependency is not loaded, so load it
- ret = Module_int_Initialise( &gKernelModules[i] );
+ ret = Module_int_Initialise(
+ gapBuiltinModules[i],
+ gasBuiltinModuleArgs ? gasBuiltinModuleArgs[i] : NULL
+ );
if( ret )
{
// The only "ok" error is NOTNEEDED
// All Dependencies OK? Initialise
StartupPrint(Module->Name);
- Log("[MOD ] Initialising %p '%s' v%i.%i...",
+ Log_Log("Module", "Starting %p '%s' v%i.%i",
Module, Module->Name,
Module->Version >> 8, Module->Version & 0xFF
);
- ret = Module->Init(NULL);
+ if( ArgString )
+ args = str_split( ArgString, ',' );
+ else
+ args = NULL;
+
+ ret = Module->Init(args);
+
+ if(args) free(args);
+
+ // Remove from loading list
+ gLoadingModules = gLoadingModules->Next;
+
if( ret != MODULE_ERR_OK ) {
- Log("[MOD ] Loading Failed, all modules that depend on this will also fail");
switch(ret)
{
case MODULE_ERR_MISC:
- Log("[MOD ] Reason: Miscelanious");
+ Log_Warning("Module", "Unable to load, reason: Miscelanious");
break;
case MODULE_ERR_NOTNEEDED:
- Log("[MOD ] Reason: Module not needed (probably hardware not found)");
+ Log_Debug("Module", "Unable to load, reason: Module not needed");
break;
case MODULE_ERR_MALLOC:
- Log("[MOD ] Reason: Error in malloc/realloc/calloc, probably not good");
+ Log_Warning("Module", "Unable to load, reason: Error in malloc/realloc/calloc, probably not good");
break;
default:
- Log("[MOD ] Reason - Unknown code %i", ret);
+ Log_Warning("Module", "Unable to load reason - Unknown code %i", ret);
break;
}
LEAVE_RET('i', ret);
+ return ret;
}
-
- // Remove from loading list
- gLoadingModules = gLoadingModules->Next;
+ LOG("ret = %i", ret);
// Add to loaded list
+ SHORTLOCK( &glModuleSpinlock );
Module->Next = gLoadedModules;
gLoadedModules = Module;
+ SHORTREL( &glModuleSpinlock );
LEAVE_RET('i', 0);
}
-int Modules_LoadBuiltins()
+/**
+ * \brief Scans the builtin modules and creates an array of them
+ */
+void Modules_int_GetBuiltinArray(void)
{
int i;
+ tModule *module;
- // Count modules
- giNumBuiltinModules = (Uint)&gKernelModulesEnd - (Uint)&gKernelModules;
- giNumBuiltinModules /= sizeof(tModule);
+ // Count
+ module = &gKernelModules;
+ i = 0;
+ while( (tVAddr)module < (tVAddr)&gKernelModulesEnd )
+ {
+ if(module->Magic == MODULE_MAGIC) {
+ i ++;
+ module ++;
+ }
+ else
+ module = (void*)( (tVAddr)module + 4 );
+ }
+
+ // Create
+ giNumBuiltinModules = i;
+ gasBuiltinModuleArgs = calloc( giNumBuiltinModules, sizeof(char*) );
+ gapBuiltinModules = malloc( giNumBuiltinModules * sizeof(tModule*) );
+
+
+ // Fill
+ module = &gKernelModules;
+ i = 0;
+ while( (tVAddr)module < (tVAddr)&gKernelModulesEnd )
+ {
+ if(module->Magic == MODULE_MAGIC) {
+ gapBuiltinModules[i] = module;
+ i ++;
+ module ++;
+ }
+ else
+ module = (void*)( (tVAddr)module + 4 );
+ }
+}
+
+/**
+ * \brief Initialises builtin modules
+ */
+void Modules_LoadBuiltins()
+{
+ int i;
+
+ if( !gapBuiltinModules )
+ Modules_int_GetBuiltinArray();
for( i = 0; i < giNumBuiltinModules; i++ )
{
- Module_int_Initialise( &gKernelModules[i] );
+ Module_int_Initialise(
+ gapBuiltinModules[i],
+ (gasBuiltinModuleArgs ? gasBuiltinModuleArgs[i] : NULL)
+ );
}
- return 0;
+ if( gasBuiltinModuleArgs != NULL )
+ free(gasBuiltinModuleArgs);
+}
+
+/**
+ * \brief Initialise a builtin module given it's name
+ *
+ * E.g. Used by VTerm to load an alternate video driver at runtime
+ */
+int Modules_InitialiseBuiltin(const char *Name)
+{
+ int i;
+
+ // Check if it's loaded
+ if( Module_IsLoaded(Name) )
+ return 0;
+
+ if( !gapBuiltinModules )
+ Modules_int_GetBuiltinArray();
+
+ for( i = 0; i < giNumBuiltinModules; i++ )
+ {
+ if( strcmp(gapBuiltinModules[i]->Name, Name) == 0 ) {
+ return Module_int_Initialise(gapBuiltinModules[i],
+ (gasBuiltinModuleArgs ? gasBuiltinModuleArgs[i] : NULL)
+ );
+ }
+ }
+ return -1;
+}
+
+/**
+ * \brief Sets the parameters for a builtin module
+ */
+void Modules_SetBuiltinParams(const char *Name, char *ArgString)
+{
+ int i;
+
+ if( gasBuiltinModuleArgs == NULL )
+ {
+ Modules_int_GetBuiltinArray();
+ }
+
+ // I hate expensive scans
+ for( i = 0; i < giNumBuiltinModules; i++ )
+ {
+ if(strcmp( gapBuiltinModules[i]->Name, Name ) == 0) {
+ gasBuiltinModuleArgs[i] = ArgString;
+ return ;
+ }
+ }
+
+ Log_Warning("Modules", "Unknown builtin kernel module '%s'", Name);
}
/**
* \fn int Module_LoadMem(void *Buffer, Uint Length, char *ArgString)
* \brief Load a module from a memory location
*/
-int Module_LoadMem(void *Buffer, Uint Length, char *ArgString)
+int Module_LoadMem(void *Buffer, Uint Length, const char *ArgString)
{
char path[VFS_MEMPATH_SIZE];
}
/**
- * \fn int Module_LoadFile(char *Path, char *ArgString)
+ * \fn int Module_LoadFile(const char *Path, const char *ArgString)
* \brief Load a module from a file
*/
-int Module_LoadFile(char *Path, char *ArgString)
+int Module_LoadFile(const char *Path, const char *ArgString)
{
void *base;
tModule *info;
// Error check
if(base == NULL) {
- Warning("Module_LoadFile: Unable to load '%s'", Path);
+ Log_Warning("Module", "Module_LoadFile - Unable to load '%s'", Path);
return 0;
}
// Unknown module type?, return error
Binary_Unload(base);
#if USE_EDI
- Warning("Module_LoadFile: Module has neither a Module Info struct, nor an EDI entrypoint");
+ Log_Warning("Module", "Module '%s' has neither a Module Info struct, nor an EDI entrypoint", Path);
#else
- Warning("Module_LoadFile: Module does not have a Module Info struct");
+ Log_Warning("Module", "Module '%s' does not have a Module Info struct", Path);
#endif
return 0;
}
- // Check magic number
- if(info->Magic != MODULE_MAGIC)
- {
- Warning("Module_LoadFile: Module's magic value is invalid (0x%x != 0x%x)", info->Magic, MODULE_MAGIC);
- return 0;
- }
-
- // Check Architecture
- if(info->Arch != MODULE_ARCH_ID)
- {
- Warning("Module_LoadFile: Module is for a different architecture");
- return 0;
- }
-
- // Resolve Dependencies
- if( !Module_int_ResolveDeps(info) ) {
- Binary_Unload(base);
- return 0;
- }
-
- Log("Initialising %p '%s' v%i.%i...",
- info,
- info->Name,
- info->Version>>8, info->Version & 0xFF
- );
-
- // Call Initialiser
- //if( info->Init( ArgString ) != 0 )
- if( info->Init( NULL ) == 0 )
+ // Initialise (and register)
+ if( Module_int_Initialise( info, ArgString ) )
{
Binary_Unload(base);
return 0;
}
- // Add to list
- LOCK( &giModuleSpinlock );
- info->Next = gLoadedModules;
- gLoadedModules = info;
- RELEASE( &giModuleSpinlock );
-
return 1;
}
*/
int Module_int_ResolveDeps(tModule *Info)
{
- char **names = Info->Dependencies;
+ const char **names = Info->Dependencies;
// Walk dependencies array
for( ; *names; names++ )
{
// Check if the module is loaded
if( !Module_IsLoaded(*names) ) {
- Warning("Module `%s' requires `%s', which is not loaded\n", Info->Name, *names);
+ Log_Warning("Module", "Module `%s' requires `%s', which is not loaded\n", Info->Name, *names);
return 0;
}
}
}
/**
- * \fn int Module_IsLoaded(char *Name)
+ * \fn int Module_IsLoaded(const char *Name)
* \brief Checks if a module is loaded
* \param Name Name of module to find
*/
-int Module_IsLoaded(char *Name)
+int Module_IsLoaded(const char *Name)
{
tModule *mod = gLoadedModules;
// not found - return false
return 0;
}
+
+/**
+ * \brief Load a module if needed
+ */
+int Module_EnsureLoaded(const char *Name)
+{
+ if( Module_IsLoaded(Name) )
+ return 0;
+
+ if( Modules_InitialiseBuiltin(Name) == 0 )
+ return 0;
+
+ // TODO: Load from a file?
+
+ return -1;
+}
git.ucc.asn.au / tpg / acess2.git / blobdiff
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