2 * Win32 builtin functions
4 * Copyright 1997 Alexandre Julliard
16 #include <sys/types.h>
17 #ifdef HAVE_SYS_MMAN_H
22 #include "wine/winbase16.h"
30 #include "debugtools.h"
32 DEFAULT_DEBUG_CHANNEL(module);
33 DECLARE_DEBUG_CHANNEL(relay);
39 const IMAGE_NT_HEADERS *nt; /* NT header */
40 const char *filename; /* DLL file name */
41 } BUILTIN32_DESCRIPTOR;
43 extern void RELAY_SetupDLL( const char *module );
45 static BUILTIN32_DESCRIPTOR builtin_dlls[MAX_DLLS];
49 /***********************************************************************
52 void *BUILTIN32_dlopen( const char *name )
57 if ((p = strrchr( name, '/' ))) name = p + 1;
58 if ((p = strrchr( name, '\\' ))) name = p + 1;
59 sprintf( buffer, "lib%s", name );
60 for (p = buffer; *p; p++) *p = tolower(*p);
61 if ((p = strrchr( buffer, '.' )) && (!strcmp( p, ".dll" ) || !strcmp( p, ".exe" ))) *p = 0;
62 strcat( buffer, ".so" );
64 if (!(handle = ELFDLL_dlopen( buffer, RTLD_NOW )))
68 p = strchr(pErr, ':');
70 (!strncmp(p, ": undefined symbol", 18))) /* undef symbol -> ERR() */
71 ERR("failed to load %s: %s\n", buffer, pErr);
72 else /* WARN() for libraries that are supposed to be native */
73 WARN("failed to load %s: %s\n", buffer, pErr );
81 /***********************************************************************
84 int BUILTIN32_dlclose( void *handle )
87 /* FIXME: should unregister descriptors first */
88 /* return dlclose( handle ); */
94 /***********************************************************************
97 * Adjust an array of pointers to make them into RVAs.
99 static inline void fixup_rva_ptrs( void *array, void *base, int count )
101 void **ptr = (void **)array;
104 if (*ptr) *ptr = (void *)((char *)*ptr - (char *)base);
110 /***********************************************************************
113 static void fixup_resources( IMAGE_RESOURCE_DIRECTORY *dir, char *root, void *base )
115 IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
118 entry = (IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
119 for (i = 0; i < dir->NumberOfNamedEntries + dir->NumberOfIdEntries; i++, entry++)
121 void *ptr = root + entry->u2.s.OffsetToDirectory;
122 if (entry->u2.s.DataIsDirectory) fixup_resources( ptr, root, base );
125 IMAGE_RESOURCE_DATA_ENTRY *data = ptr;
126 fixup_rva_ptrs( &data->OffsetToData, base, 1 );
132 /***********************************************************************
133 * BUILTIN32_DoLoadImage
135 * Load a built-in Win32 module. Helper function for BUILTIN32_LoadImage.
137 static HMODULE BUILTIN32_DoLoadImage( const BUILTIN32_DESCRIPTOR *descr )
139 IMAGE_DATA_DIRECTORY *dir;
140 IMAGE_DOS_HEADER *dos;
141 IMAGE_NT_HEADERS *nt;
142 IMAGE_SECTION_HEADER *sec;
143 INT size, nb_sections;
144 BYTE *addr, *code_start, *data_start;
145 int page_size = VIRTUAL_GetPageSize();
147 /* Allocate the module */
149 nb_sections = 2; /* code + data */
151 size = (sizeof(IMAGE_DOS_HEADER)
152 + sizeof(IMAGE_NT_HEADERS)
153 + nb_sections * sizeof(IMAGE_SECTION_HEADER));
155 assert( size <= page_size );
157 if (descr->nt->OptionalHeader.ImageBase)
159 void *base = (void *)descr->nt->OptionalHeader.ImageBase;
160 if ((addr = VIRTUAL_mmap( -1, base, page_size, 0,
161 PROT_READ|PROT_WRITE, MAP_FIXED )) != base)
163 ERR("failed to map over PE header for %s at %p\n", descr->filename, base );
169 if (!(addr = VirtualAlloc( NULL, page_size, MEM_COMMIT, PAGE_READWRITE ))) return 0;
172 dos = (IMAGE_DOS_HEADER *)addr;
173 nt = (IMAGE_NT_HEADERS *)(dos + 1);
174 sec = (IMAGE_SECTION_HEADER *)(nt + 1);
175 code_start = addr + page_size;
178 data_start = code_start + page_size;
180 /* Build the DOS and NT headers */
182 dos->e_magic = IMAGE_DOS_SIGNATURE;
183 dos->e_lfanew = sizeof(*dos);
187 nt->FileHeader.NumberOfSections = nb_sections;
188 nt->OptionalHeader.SizeOfCode = data_start - code_start;
189 nt->OptionalHeader.SizeOfInitializedData = 0;
190 nt->OptionalHeader.SizeOfUninitializedData = 0;
191 nt->OptionalHeader.ImageBase = (DWORD)addr;
193 fixup_rva_ptrs( &nt->OptionalHeader.AddressOfEntryPoint, addr, 1 );
195 /* Build the code section */
197 strcpy( sec->Name, ".text" );
198 sec->SizeOfRawData = data_start - code_start;
199 sec->Misc.VirtualSize = sec->SizeOfRawData;
200 sec->VirtualAddress = code_start - addr;
201 sec->PointerToRawData = code_start - addr;
202 sec->Characteristics = (IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ);
205 /* Build the data section */
207 strcpy( sec->Name, ".data" );
208 sec->SizeOfRawData = 0;
209 sec->Misc.VirtualSize = sec->SizeOfRawData;
210 sec->VirtualAddress = data_start - addr;
211 sec->PointerToRawData = data_start - addr;
212 sec->Characteristics = (IMAGE_SCN_CNT_INITIALIZED_DATA |
213 IMAGE_SCN_MEM_WRITE | IMAGE_SCN_MEM_READ);
216 /* Build the import directory */
218 dir = &nt->OptionalHeader.DataDirectory[IMAGE_FILE_IMPORT_DIRECTORY];
221 IMAGE_IMPORT_DESCRIPTOR *imports = (void *)dir->VirtualAddress;
222 fixup_rva_ptrs( &dir->VirtualAddress, addr, 1 );
223 /* we can fixup everything at once since we only have pointers and 0 values */
224 fixup_rva_ptrs( imports, addr, dir->Size / sizeof(void*) );
227 /* Build the resource directory */
229 dir = &nt->OptionalHeader.DataDirectory[IMAGE_FILE_RESOURCE_DIRECTORY];
232 void *ptr = (void *)dir->VirtualAddress;
233 fixup_rva_ptrs( &dir->VirtualAddress, addr, 1 );
234 fixup_resources( ptr, ptr, addr );
237 /* Build the export directory */
239 dir = &nt->OptionalHeader.DataDirectory[IMAGE_FILE_EXPORT_DIRECTORY];
242 IMAGE_EXPORT_DIRECTORY *exports = (void *)dir->VirtualAddress;
243 fixup_rva_ptrs( &dir->VirtualAddress, addr, 1 );
244 fixup_rva_ptrs( (void *)exports->AddressOfFunctions, addr, exports->NumberOfFunctions );
245 fixup_rva_ptrs( (void *)exports->AddressOfNames, addr, exports->NumberOfNames );
246 fixup_rva_ptrs( &exports->Name, addr, 1 );
247 fixup_rva_ptrs( &exports->AddressOfFunctions, addr, 1 );
248 fixup_rva_ptrs( &exports->AddressOfNames, addr, 1 );
249 fixup_rva_ptrs( &exports->AddressOfNameOrdinals, addr, 1 );
251 /* Setup relay debugging entry points */
252 if (WARN_ON(relay) || TRACE_ON(relay)) RELAY_SetupDLL( addr );
255 return (HMODULE)addr;
258 /***********************************************************************
259 * BUILTIN32_LoadLibraryExA
261 * Partly copied from the original PE_ version.
264 WINE_MODREF *BUILTIN32_LoadLibraryExA(LPCSTR path, DWORD flags)
268 char dllname[20], *p;
273 /* Fix the name in case we have a full path and extension */
275 if ((p = strrchr( name, '\\' ))) name = p + 1;
276 if ((p = strrchr( name, '/' ))) name = p + 1;
278 if (strlen(name) >= sizeof(dllname)-4) goto error;
280 strcpy( dllname, name );
281 p = strrchr( dllname, '.' );
282 if (!p) strcat( dllname, ".dll" );
284 /* Search built-in descriptor */
285 for (i = 0; i < nb_dlls; i++)
286 if (!strcasecmp( builtin_dlls[i].filename, dllname )) goto found;
288 if ((handle = BUILTIN32_dlopen( dllname )))
290 for (i = 0; i < nb_dlls; i++)
291 if (!strcasecmp( builtin_dlls[i].filename, dllname )) goto found;
292 ERR( "loaded .so but dll %s still not found\n", dllname );
293 BUILTIN32_dlclose( handle );
297 SetLastError( ERROR_FILE_NOT_FOUND );
301 /* Load built-in module */
302 if (!(module = BUILTIN32_DoLoadImage( &builtin_dlls[i] ))) return NULL;
304 /* Create 32-bit MODREF */
305 if ( !(wm = PE_CreateModule( module, path, flags, -1, TRUE )) )
307 ERR( "can't load %s\n", path );
308 SetLastError( ERROR_OUTOFMEMORY );
312 wm->refCount++; /* we don't support freeing builtin dlls (FIXME)*/
316 /***********************************************************************
317 * BUILTIN32_LoadExeModule
319 HMODULE BUILTIN32_LoadExeModule(void)
323 /* Search built-in EXE descriptor */
324 for ( i = 0; i < nb_dlls; i++ )
325 if ( !(builtin_dlls[i].nt->FileHeader.Characteristics & IMAGE_FILE_DLL) )
329 MESSAGE( "More than one built-in EXE module loaded!\n" );
338 MESSAGE( "No built-in EXE module loaded! Did you create a .spec file?\n" );
342 /* Load built-in module */
343 return BUILTIN32_DoLoadImage( &builtin_dlls[exe] );
347 /***********************************************************************
348 * BUILTIN32_RegisterDLL
350 * Register a built-in DLL descriptor.
352 void BUILTIN32_RegisterDLL( const IMAGE_NT_HEADERS *header, const char *filename )
354 assert( nb_dlls < MAX_DLLS );
355 builtin_dlls[nb_dlls].nt = header;
356 builtin_dlls[nb_dlls].filename = filename;
360 /***********************************************************************
361 * BUILTIN32_Unimplemented
363 * This function is called for unimplemented 32-bit entry points (declared
364 * as 'stub' in the spec file).
366 void BUILTIN32_Unimplemented( const char *dllname, const char *funcname )
368 __RESTORE_ES; /* Just in case */
370 MESSAGE( "FATAL: No handler for Win32 routine %s.%s", dllname, funcname );
372 MESSAGE( " (called from %p)", __builtin_return_address(1) );