void *dlopen( const char *file, int mode )
{
HMODULE hModule;
UINT uMode;
current_error = NULL;
/* Do not let Windows display the critical-error-handler message box */
uMode = SetErrorMode( SEM_FAILCRITICALERRORS );
if( file == 0 )
{
/* POSIX says that if the value of file is 0, a handle on a global
* symbol object must be provided. That object must be able to access
* all symbols from the original program file, and any objects loaded
* with the RTLD_GLOBAL flag.
* The return value from GetModuleHandle( ) allows us to retrieve
* symbols only from the original program file. For objects loaded with
* the RTLD_GLOBAL flag, we create our own list later on.
*/
hModule = GetModuleHandle( NULL );
if( !hModule )
save_err_ptr_str( file );
}
else
{
char lpFileName[MAX_PATH];
int i;
/* MSDN says backslashes *must* be used instead of forward slashes. */
for( i = 0 ; i < sizeof(lpFileName)-1 ; i++ )
{
if( !file[i] )
break;
else if( file[i] == '/' )
lpFileName[i] = '\\';
else
lpFileName[i] = file[i];
}
lpFileName[i] = '\0';
/* POSIX says the search path is implementation-defined.
* LOAD_WITH_ALTERED_SEARCH_PATH is used to make it behave more closely
* to UNIX's search paths (start with system folders instead of current
* folder).
*/
hModule = LoadLibraryEx( (LPSTR) lpFileName, NULL,
LOAD_WITH_ALTERED_SEARCH_PATH );
/* If the object was loaded with RTLD_GLOBAL, add it to list of global
* objects, so that its symbols may be retrieved even if the handle for
* the original program file is passed. POSIX says that if the same
* file is specified in multiple invocations, and any of them are
* RTLD_GLOBAL, even if any further invocations use RTLD_LOCAL, the
* symbols will remain global.
*/
if( !hModule )
save_err_str( lpFileName );
else if( (mode & RTLD_GLOBAL) )
global_add( hModule );
}
/* Return to previous state of the error-mode bit flags. */
SetErrorMode( uMode );
return (void *) hModule;
}
void
*dlopen(const char *file, int mode)
{
HMODULE hModule;
UINT uMode;
current_error = NULL;
/* Do not let Windows display the critical-error-handler message box */
uMode = SetErrorMode(SEM_FAILCRITICALERRORS);
if( file == 0 )
{
/* POSIX says that if the value of file is 0, a handle on a global
* symbol object must be provided. That object must be able to access
* all symbols from the original program file, and any objects loaded
* with the RTLD_GLOBAL flag.
* The return value from GetModuleHandle( ) allows us to retrieve
* symbols only from the original program file. For objects loaded with
* the RTLD_GLOBAL flag, we create our own list later on.
*/
hModule = GetModuleHandle( NULL );
if( !hModule )
save_err_ptr_str( file );
}
else
{
char lpFileName[MAX_PATH];
int i;
/* MSDN says backslashes *must* be used instead of forward slashes. */
for( i = 0 ; i < sizeof(lpFileName)-1 ; i++ )
{
if( !file[i] )
break;
else if( file[i] == '/' )
lpFileName[i] = '\\';
else
lpFileName[i] = file[i];
}
lpFileName[i] = '\0';
hModule = LoadLibraryEx( (LPSTR) lpFileName, NULL,
LOAD_WITH_ALTERED_SEARCH_PATH );
if( !hModule )
save_err_str( lpFileName );
else if( (mode & RTLD_GLOBAL) )
global_add(hModule);
}
/* Return to previous state of the error-mode bit flags. */
SetErrorMode( uMode );
return (void *) hModule;
}
u16 global_lookup(struct global_state *gstate, const char *name)
/* Returns: the index for global variable name in environment.
If name doesn't exist yet, it is created with a variable
whose value is NULL.
*/
{
struct symbol *pos;
struct string *tname;
if (table_lookup(gstate->global, name, &pos))
return (u16)intval(pos->data);
GCPRO1(gstate);
tname = alloc_string(name);
GCPOP(1);
return global_add(gstate, tname, NULL);
}
u16 mglobal_lookup(struct global_state *gstate, struct string *name)
/* Returns: the index for global variable name in environment.
If name doesn't exist yet, it is created with a variable
whose value is NULL.
*/
{
struct symbol *pos;
struct string *tname;
if (table_lookup(gstate->global, name->str, &pos))
return (u16)intval(pos->data);
GCPRO2(gstate, name);
tname = alloc_string_n(string_len(name));
strcpy(tname->str, name->str);
GCPOP(2);
return global_add(gstate, tname, NULL);
}
void *dlopen( const char *file, int mode )
{
HMODULE hModule;
UINT uMode;
current_error = NULL;
/* Do not let Windows display the critical-error-handler message box */
uMode = SetErrorMode( SEM_FAILCRITICALERRORS );
if( file == 0 )
{
HMODULE hAddtnlMods[1024]; // Already loaded modules
HANDLE hCurrentProc = GetCurrentProcess( );
DWORD cbNeeded;
/* POSIX says that if the value of file is 0, a handle on a global
* symbol object must be provided. That object must be able to access
* all symbols from the original program file, and any objects loaded
* with the RTLD_GLOBAL flag.
* The return value from GetModuleHandle( ) allows us to retrieve
* symbols only from the original program file. For objects loaded with
* the RTLD_GLOBAL flag, we create our own list later on. For objects
* outside of the program file but already loaded (e.g. linked DLLs)
* they are added below.
*/
hModule = GetModuleHandle( NULL );
if( !hModule )
save_err_ptr_str( file );
/* GetModuleHandle( NULL ) only returns the current program file. So
* if we want to get ALL loaded module including those in linked DLLs,
* we have to use EnumProcessModules( ).
*/
if( EnumProcessModules( hCurrentProc, hAddtnlMods,
sizeof( hAddtnlMods ), &cbNeeded ) != 0 )
{
DWORD i;
for( i = 0; i < cbNeeded / sizeof( HMODULE ); i++ )
{
global_add( &first_automatic_object, hAddtnlMods[i] );
}
}
auto_ref_count++;
}
else
{
char lpFileName[MAX_PATH];
int i;
/* MSDN says backslashes *must* be used instead of forward slashes. */
for( i = 0 ; i < sizeof(lpFileName)-1 ; i++ )
{
if( !file[i] )
break;
else if( file[i] == '/' )
lpFileName[i] = '\\';
else
lpFileName[i] = file[i];
}
lpFileName[i] = '\0';
/* POSIX says the search path is implementation-defined.
* LOAD_WITH_ALTERED_SEARCH_PATH is used to make it behave more closely
* to UNIX's search paths (start with system folders instead of current
* folder).
*/
hModule = LoadLibraryEx( (LPSTR) lpFileName, NULL,
LOAD_WITH_ALTERED_SEARCH_PATH );
/* If the object was loaded with RTLD_GLOBAL, add it to list of global
* objects, so that its symbols may be retrieved even if the handle for
* the original program file is passed. POSIX says that if the same
* file is specified in multiple invocations, and any of them are
* RTLD_GLOBAL, even if any further invocations use RTLD_LOCAL, the
* symbols will remain global.
*/
if( !hModule )
save_err_str( lpFileName );
else if( (mode & RTLD_GLOBAL) )
global_add( &first_object, hModule );
}
/* Return to previous state of the error-mode bit flags. */
SetErrorMode( uMode );
return (void *) hModule;
}
