/*
* Built-in modules
*
* Copyright 1996 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include <stdio.h>
#include "winbase.h"
#include "wine/winbase16.h"
#include "builtin16.h"
#include "global.h"
#include "file.h"
#include "module.h"
#include "miscemu.h"
#include "stackframe.h"
#include "wine/library.h"
#include "wine/debug.h"
#include "toolhelp.h"
WINE_DEFAULT_DEBUG_CHANNEL(module);
typedef struct
{
void *module_start; /* 32-bit address of the module data */
int module_size; /* Size of the module data */
void *code_start; /* 32-bit address of DLL code */
void *data_start; /* 32-bit address of DLL data */
const char *owner; /* 32-bit dll that contains this dll */
const void *rsrc; /* resources data */
} BUILTIN16_DESCRIPTOR;
/* Table of all built-in DLLs */
#define MAX_DLLS 50
static const BUILTIN16_DESCRIPTOR *builtin_dlls[MAX_DLLS];
/* patch all the flat cs references of the code segment if necessary */
inline static void patch_code_segment( void *code_segment )
{
#ifdef __i386__
CALLFROM16 *call = code_segment;
if (call->flatcs == wine_get_cs()) return; /* nothing to patch */
while (call->pushl == 0x68)
{
call->flatcs = wine_get_cs();
call++;
}
#endif
}
/***********************************************************************
* BUILTIN_DoLoadModule16
*
* Load a built-in Win16 module. Helper function for BUILTIN_LoadModule.
*/
static HMODULE16 BUILTIN_DoLoadModule16( const BUILTIN16_DESCRIPTOR *descr )
{
NE_MODULE *pModule;
int minsize;
SEGTABLEENTRY *pSegTable;
HMODULE16 hModule;
hModule = GLOBAL_CreateBlock( GMEM_MOVEABLE, descr->module_start,
descr->module_size, 0, WINE_LDT_FLAGS_DATA );
if (!hModule) return 0;
FarSetOwner16( hModule, hModule );
pModule = (NE_MODULE *)GlobalLock16( hModule );
pModule->self = hModule;
/* NOTE: (Ab)use the hRsrcMap parameter for resource data pointer */
pModule->hRsrcMap = (void *)descr->rsrc;
/* Allocate the code segment */
pSegTable = NE_SEG_TABLE( pModule );
pSegTable->hSeg = GLOBAL_CreateBlock( GMEM_FIXED, descr->code_start,
pSegTable->minsize, hModule,
WINE_LDT_FLAGS_CODE|WINE_LDT_FLAGS_32BIT );
if (!pSegTable->hSeg) return 0;
patch_code_segment( descr->code_start );
pSegTable++;
/* Allocate the data segment */
minsize = pSegTable->minsize ? pSegTable->minsize : 0x10000;
minsize += pModule->heap_size;
if (minsize > 0x10000) minsize = 0x10000;
pSegTable->hSeg = GlobalAlloc16( GMEM_FIXED, minsize );
if (!pSegTable->hSeg) return 0;
FarSetOwner16( pSegTable->hSeg, hModule );
if (pSegTable->minsize) memcpy( GlobalLock16( pSegTable->hSeg ),
descr->data_start, pSegTable->minsize);
if (pModule->heap_size)
LocalInit16( GlobalHandleToSel16(pSegTable->hSeg),
pSegTable->minsize, minsize );
if (descr->rsrc) NE_InitResourceHandler(hModule);
NE_RegisterModule( pModule );
/* make sure the 32-bit library containing this one is loaded too */
LoadLibraryA( descr->owner );
return hModule;
}
/***********************************************************************
* find_dll_descr
*
* Find a descriptor in the list
*/
static const BUILTIN16_DESCRIPTOR *find_dll_descr( const char *dllname )
{
int i;
for (i = 0; i < MAX_DLLS; i++)
{
const BUILTIN16_DESCRIPTOR *descr = builtin_dlls[i];
if (descr)
{
NE_MODULE *pModule = (NE_MODULE *)descr->module_start;
OFSTRUCT *pOfs = (OFSTRUCT *)((LPBYTE)pModule + pModule->fileinfo);
BYTE *name_table = (BYTE *)pModule + pModule->name_table;
/* check the dll file name */
if (!FILE_strcasecmp( pOfs->szPathName, dllname )) return descr;
/* check the dll module name (without extension) */
if (!FILE_strncasecmp( dllname, name_table+1, *name_table ) &&
!strcmp( dllname + *name_table, ".dll" ))
return descr;
}
}
return NULL;
}
/***********************************************************************
* BUILTIN_IsPresent
*
* Check if a builtin dll descriptor is present (because we loaded its 32-bit counterpart).
*/
BOOL BUILTIN_IsPresent( LPCSTR name )
{
char dllname[20], *p;
if (strlen(name) >= sizeof(dllname)-4) return FALSE;
strcpy( dllname, name );
p = strrchr( dllname, '.' );
if (!p) strcat( dllname, ".dll" );
for (p = dllname; *p; p++) *p = FILE_tolower(*p);
return (find_dll_descr( dllname ) != NULL);
}
/***********************************************************************
* BUILTIN_LoadModule
*
* Load a built-in module.
*/
HMODULE16 BUILTIN_LoadModule( LPCSTR name )
{
const BUILTIN16_DESCRIPTOR *descr;
char dllname[20], *p;
void *handle;
/* Fix the name in case we have a full path and extension */
if ((p = strrchr( name, '\\' ))) name = p + 1;
if ((p = strrchr( name, '/' ))) name = p + 1;
if (strlen(name) >= sizeof(dllname)-4) return (HMODULE16)2;
strcpy( dllname, name );
p = strrchr( dllname, '.' );
if (!p) strcat( dllname, ".dll" );
for (p = dllname; *p; p++) *p = FILE_tolower(*p);
if ((descr = find_dll_descr( dllname )))
return BUILTIN_DoLoadModule16( descr );
if ((handle = BUILTIN32_dlopen( dllname )))
{
if ((descr = find_dll_descr( dllname )))
return BUILTIN_DoLoadModule16( descr );
ERR( "loaded .so but dll %s still not found\n", dllname );
BUILTIN32_dlclose( handle );
}
return (HMODULE16)2;
}
/***********************************************************************
* __wine_register_dll_16 (KERNEL32.@)
*
* Register a built-in DLL descriptor.
*/
void __wine_register_dll_16( const BUILTIN16_DESCRIPTOR *descr )
{
int i;
for (i = 0; i < MAX_DLLS; i++)
{
if (builtin_dlls[i]) continue;
builtin_dlls[i] = descr;
break;
}
assert( i < MAX_DLLS );
}
/***********************************************************************
* __wine_unregister_dll_16 (KERNEL32.@)
*
* Unregister a built-in DLL descriptor.
*/
void __wine_unregister_dll_16( const BUILTIN16_DESCRIPTOR *descr )
{
int i;
for (i = 0; i < MAX_DLLS; i++)
{
if (builtin_dlls[i] != descr) continue;
builtin_dlls[i] = NULL;
break;
}
}