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https://github.com/reactos/wine.git
synced 2024-12-02 00:36:43 +00:00
8ca7e0af78
whether a failed dll load is because the file didn't exist; more robust than trying to guess the contents of the error string... Get rid of BUILTIN32_dlopen.
257 lines
7.5 KiB
C
257 lines
7.5 KiB
C
/*
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* Built-in modules
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*
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* Copyright 1996 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdio.h>
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#include "winbase.h"
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#include "wine/winbase16.h"
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#include "builtin16.h"
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#include "global.h"
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#include "file.h"
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#include "module.h"
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#include "miscemu.h"
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#include "stackframe.h"
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#include "wine/library.h"
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#include "wine/debug.h"
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#include "toolhelp.h"
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WINE_DEFAULT_DEBUG_CHANNEL(module);
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typedef struct
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{
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void *module_start; /* 32-bit address of the module data */
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int module_size; /* Size of the module data */
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void *code_start; /* 32-bit address of DLL code */
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void *data_start; /* 32-bit address of DLL data */
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const char *owner; /* 32-bit dll that contains this dll */
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const void *rsrc; /* resources data */
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} BUILTIN16_DESCRIPTOR;
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/* Table of all built-in DLLs */
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#define MAX_DLLS 50
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static const BUILTIN16_DESCRIPTOR *builtin_dlls[MAX_DLLS];
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/* patch all the flat cs references of the code segment if necessary */
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inline static void patch_code_segment( void *code_segment )
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{
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#ifdef __i386__
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CALLFROM16 *call = code_segment;
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if (call->flatcs == wine_get_cs()) return; /* nothing to patch */
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while (call->pushl == 0x68)
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{
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call->flatcs = wine_get_cs();
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call++;
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}
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#endif
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}
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/***********************************************************************
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* BUILTIN_DoLoadModule16
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*
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* Load a built-in Win16 module. Helper function for BUILTIN_LoadModule.
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*/
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static HMODULE16 BUILTIN_DoLoadModule16( const BUILTIN16_DESCRIPTOR *descr )
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{
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NE_MODULE *pModule;
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int minsize;
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SEGTABLEENTRY *pSegTable;
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HMODULE16 hModule;
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hModule = GLOBAL_CreateBlock( GMEM_MOVEABLE, descr->module_start,
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descr->module_size, 0, WINE_LDT_FLAGS_DATA );
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if (!hModule) return 0;
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FarSetOwner16( hModule, hModule );
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pModule = (NE_MODULE *)GlobalLock16( hModule );
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pModule->self = hModule;
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/* NOTE: (Ab)use the hRsrcMap parameter for resource data pointer */
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pModule->hRsrcMap = (void *)descr->rsrc;
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/* Allocate the code segment */
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pSegTable = NE_SEG_TABLE( pModule );
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pSegTable->hSeg = GLOBAL_CreateBlock( GMEM_FIXED, descr->code_start,
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pSegTable->minsize, hModule,
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WINE_LDT_FLAGS_CODE|WINE_LDT_FLAGS_32BIT );
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if (!pSegTable->hSeg) return 0;
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patch_code_segment( descr->code_start );
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pSegTable++;
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/* Allocate the data segment */
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minsize = pSegTable->minsize ? pSegTable->minsize : 0x10000;
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minsize += pModule->heap_size;
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if (minsize > 0x10000) minsize = 0x10000;
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pSegTable->hSeg = GlobalAlloc16( GMEM_FIXED, minsize );
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if (!pSegTable->hSeg) return 0;
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FarSetOwner16( pSegTable->hSeg, hModule );
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if (pSegTable->minsize) memcpy( GlobalLock16( pSegTable->hSeg ),
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descr->data_start, pSegTable->minsize);
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if (pModule->heap_size)
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LocalInit16( GlobalHandleToSel16(pSegTable->hSeg),
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pSegTable->minsize, minsize );
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if (descr->rsrc) NE_InitResourceHandler(pModule);
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NE_RegisterModule( pModule );
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/* make sure the 32-bit library containing this one is loaded too */
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LoadLibraryA( descr->owner );
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return hModule;
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}
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/***********************************************************************
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* find_dll_descr
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*
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* Find a descriptor in the list
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*/
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static const BUILTIN16_DESCRIPTOR *find_dll_descr( const char *dllname )
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{
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int i;
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for (i = 0; i < MAX_DLLS; i++)
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{
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const BUILTIN16_DESCRIPTOR *descr = builtin_dlls[i];
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if (descr)
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{
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NE_MODULE *pModule = (NE_MODULE *)descr->module_start;
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OFSTRUCT *pOfs = (OFSTRUCT *)((LPBYTE)pModule + pModule->fileinfo);
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BYTE *name_table = (BYTE *)pModule + pModule->name_table;
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/* check the dll file name */
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if (!FILE_strcasecmp( pOfs->szPathName, dllname )) return descr;
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/* check the dll module name (without extension) */
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if (!FILE_strncasecmp( dllname, name_table+1, *name_table ) &&
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!strcmp( dllname + *name_table, ".dll" ))
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return descr;
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}
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}
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return NULL;
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}
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/***********************************************************************
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* BUILTIN_IsPresent
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*
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* Check if a builtin dll descriptor is present (because we loaded its 32-bit counterpart).
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*/
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BOOL BUILTIN_IsPresent( LPCSTR name )
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{
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char dllname[20], *p;
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if (strlen(name) >= sizeof(dllname)-4) return FALSE;
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strcpy( dllname, name );
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p = strrchr( dllname, '.' );
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if (!p) strcat( dllname, ".dll" );
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for (p = dllname; *p; p++) *p = FILE_tolower(*p);
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return (find_dll_descr( dllname ) != NULL);
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}
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/***********************************************************************
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* BUILTIN_LoadModule
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*
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* Load a built-in module.
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*/
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HMODULE16 BUILTIN_LoadModule( LPCSTR name )
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{
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const BUILTIN16_DESCRIPTOR *descr;
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char error[256], dllname[20], *p;
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int file_exists;
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void *handle;
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/* Fix the name in case we have a full path and extension */
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if ((p = strrchr( name, '\\' ))) name = p + 1;
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if ((p = strrchr( name, '/' ))) name = p + 1;
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if (strlen(name) >= sizeof(dllname)-4) return (HMODULE16)2;
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strcpy( dllname, name );
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p = strrchr( dllname, '.' );
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if (!p) strcat( dllname, ".dll" );
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for (p = dllname; *p; p++) *p = FILE_tolower(*p);
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if ((descr = find_dll_descr( dllname )))
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return BUILTIN_DoLoadModule16( descr );
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if ((handle = wine_dll_load( dllname, error, sizeof(error), &file_exists )))
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{
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if ((descr = find_dll_descr( dllname )))
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return BUILTIN_DoLoadModule16( descr );
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ERR( "loaded .so but dll %s still not found\n", dllname );
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}
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else
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{
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if (!file_exists) WARN("cannot open .so lib for 16-bit builtin %s: %s\n", name, error);
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else ERR("failed to load .so lib for 16-bit builtin %s: %s\n", name, error );
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}
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return (HMODULE16)2;
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}
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/***********************************************************************
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* __wine_register_dll_16 (KERNEL32.@)
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*
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* Register a built-in DLL descriptor.
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*/
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void __wine_register_dll_16( const BUILTIN16_DESCRIPTOR *descr )
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{
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int i;
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for (i = 0; i < MAX_DLLS; i++)
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{
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if (builtin_dlls[i]) continue;
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builtin_dlls[i] = descr;
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break;
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}
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assert( i < MAX_DLLS );
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}
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/***********************************************************************
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* __wine_unregister_dll_16 (KERNEL32.@)
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*
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* Unregister a built-in DLL descriptor.
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*/
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void __wine_unregister_dll_16( const BUILTIN16_DESCRIPTOR *descr )
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{
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int i;
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for (i = 0; i < MAX_DLLS; i++)
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{
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if (builtin_dlls[i] != descr) continue;
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builtin_dlls[i] = NULL;
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break;
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}
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}
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