relay32/builtin32.c

   1 /*
   2  * Win32 builtin functions
   3  *
   4  * Copyright 1997 Alexandre Julliard
   5  */
   6
   7 #include <assert.h>
   8 #include <stdio.h>
   9 #include <string.h>
  10 #include "builtin32.h"
  11 #include "module.h"
  12 #include "task.h"
  13 #include "process.h"
  14 #include "stddebug.h"
  15 #include "debug.h"
  16
  17 typedef struct
  18 {
  19     BYTE  call;                    /* 0xe8 call callfrom32 (relative) */
  20     DWORD callfrom32 WINE_PACKED;  /* RELAY_CallFrom32 relative addr */
  21     BYTE  ret;                     /* 0xc2 ret $n  or  0xc3 ret */
  22     WORD  args;                    /* nb of args to remove from the stack */
  23 } DEBUG_ENTRY_POINT;
  24
  25 typedef struct
  26 {
  27     BYTE  pushl;                   /* 0x68 pushl $func_to_call */
  28     DWORD func WINE_PACKED;        /* func to call */
  29     BYTE  jmp;                     /* 0xe9 jmp CALL32_Regs (relative) */
  30     DWORD call32_regs WINE_PACKED; /* CALL32_Regs relative addr */
  31     WORD  nop;                     /* 0x9090 nop;nop */
  32 } REG_ENTRY_POINT;
  33
  34 typedef struct
  35 {
  36     const BUILTIN32_DESCRIPTOR *descr;     /* DLL descriptor */
  37     DEBUG_ENTRY_POINT          *dbg_funcs; /* Relay debugging functions table*/
  38     BOOL32                      used;      /* Used by default */
  39 } BUILTIN32_DLL;
  40
  41
  42 extern const BUILTIN32_DESCRIPTOR ADVAPI32_Descriptor;
  43 extern const BUILTIN32_DESCRIPTOR COMCTL32_Descriptor;
  44 extern const BUILTIN32_DESCRIPTOR COMDLG32_Descriptor;
  45 extern const BUILTIN32_DESCRIPTOR CRTDLL_Descriptor;
  46 extern const BUILTIN32_DESCRIPTOR DCIMAN32_Descriptor;
  47 extern const BUILTIN32_DESCRIPTOR GDI32_Descriptor;
  48 extern const BUILTIN32_DESCRIPTOR KERNEL32_Descriptor;
  49 extern const BUILTIN32_DESCRIPTOR LZ32_Descriptor;
  50 extern const BUILTIN32_DESCRIPTOR MPR_Descriptor;
  51 extern const BUILTIN32_DESCRIPTOR MSVFW32_Descriptor;
  52 extern const BUILTIN32_DESCRIPTOR NTDLL_Descriptor;
  53 extern const BUILTIN32_DESCRIPTOR OLE32_Descriptor;
  54 extern const BUILTIN32_DESCRIPTOR OLECLI32_Descriptor;
  55 extern const BUILTIN32_DESCRIPTOR OLESVR32_Descriptor;
  56 extern const BUILTIN32_DESCRIPTOR SHELL32_Descriptor;
  57 extern const BUILTIN32_DESCRIPTOR TAPI32_Descriptor;
  58 extern const BUILTIN32_DESCRIPTOR USER32_Descriptor;
  59 extern const BUILTIN32_DESCRIPTOR VERSION_Descriptor;
  60 extern const BUILTIN32_DESCRIPTOR W32SKRNL_Descriptor;
  61 extern const BUILTIN32_DESCRIPTOR WINMM_Descriptor;
  62 extern const BUILTIN32_DESCRIPTOR WINSPOOL_Descriptor;
  63 extern const BUILTIN32_DESCRIPTOR WOW32_Descriptor;
  64 extern const BUILTIN32_DESCRIPTOR WSOCK32_Descriptor;
  65
  66 static BUILTIN32_DLL BuiltinDLLs[] =
  67 {
  68     { &ADVAPI32_Descriptor, NULL, TRUE  },
  69     { &COMCTL32_Descriptor, NULL, FALSE },
  70     { &COMDLG32_Descriptor, NULL, TRUE  },
  71     { &CRTDLL_Descriptor,   NULL, TRUE  },
  72     { &DCIMAN32_Descriptor, NULL, TRUE  },
  73     { &GDI32_Descriptor,    NULL, TRUE  },
  74     { &KERNEL32_Descriptor, NULL, TRUE  },
  75     { &LZ32_Descriptor,     NULL, TRUE  },
  76     { &MPR_Descriptor,      NULL, TRUE  },
  77     { &MSVFW32_Descriptor,  NULL, TRUE  },
  78     { &NTDLL_Descriptor,    NULL, TRUE  },
  79     { &OLE32_Descriptor,    NULL, FALSE },
  80     { &OLECLI32_Descriptor, NULL, FALSE },
  81     { &OLESVR32_Descriptor, NULL, FALSE },
  82     { &SHELL32_Descriptor,  NULL, TRUE  },
  83     { &TAPI32_Descriptor,   NULL, TRUE  },
  84     { &USER32_Descriptor,   NULL, TRUE  },
  85     { &VERSION_Descriptor,  NULL, TRUE  },
  86     { &W32SKRNL_Descriptor, NULL, TRUE  },
  87     { &WINMM_Descriptor,    NULL, TRUE  },
  88     { &WINSPOOL_Descriptor, NULL, TRUE  },
  89     { &WOW32_Descriptor,    NULL, TRUE  },
  90     { &WSOCK32_Descriptor,  NULL, TRUE  },
  91     /* Last entry */
  92     { NULL, NULL, FALSE }
  93 };
  94
  95
  96 /***********************************************************************
  97  *           BUILTIN32_DoLoadModule
  98  *
  99  * Load a built-in Win32 module. Helper function for BUILTIN32_LoadModule.
 100  */
 101 static HMODULE32 BUILTIN32_DoLoadModule( BUILTIN32_DLL *dll )
 102 {
 103     extern void RELAY_CallFrom32();
 104     extern void CALL32_Regs();
 105
 106     HMODULE16 hModule;
 107     NE_MODULE *pModule;
 108     OFSTRUCT ofs;
 109     IMAGE_DATA_DIRECTORY *dir;
 110     IMAGE_DOS_HEADER *dos;
 111     IMAGE_NT_HEADERS *nt;
 112     IMAGE_SECTION_HEADER *sec;
 113     IMAGE_EXPORT_DIRECTORY *exp;
 114     LPVOID *funcs;
 115     LPSTR *names;
 116     DEBUG_ENTRY_POINT *debug;
 117     REG_ENTRY_POINT *regs;
 118     PE_MODREF *pem;
 119     INT32 i, size;
 120     BYTE *addr;
 121
 122     /* Allocate the module */
 123
 124     size = (sizeof(IMAGE_DOS_HEADER)
 125             + sizeof(IMAGE_NT_HEADERS)
 126             + 2 * sizeof(IMAGE_SECTION_HEADER)
 127             + sizeof(IMAGE_EXPORT_DIRECTORY)
 128             + dll->descr->nb_funcs * sizeof(LPVOID)
 129             + dll->descr->nb_names * sizeof(LPSTR)
 130             + dll->descr->nb_reg_funcs * sizeof(REG_ENTRY_POINT));
 131 #ifdef __i386__
 132     if (debugging_relay)
 133         size += dll->descr->nb_funcs * sizeof(DEBUG_ENTRY_POINT);
 134 #endif
 135     addr  = VirtualAlloc( NULL, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE );
 136     if (!addr) return 0;
 137     dos   = (IMAGE_DOS_HEADER *)addr;
 138     nt    = (IMAGE_NT_HEADERS *)(dos + 1);
 139     sec   = (IMAGE_SECTION_HEADER *)(nt + 1);
 140     exp   = (IMAGE_EXPORT_DIRECTORY *)(sec + 2);
 141     funcs = (LPVOID *)(exp + 1);
 142     names = (LPSTR *)(funcs + dll->descr->nb_funcs);
 143     regs  = (REG_ENTRY_POINT *)(names + dll->descr->nb_names);
 144     debug = (DEBUG_ENTRY_POINT *)(regs + dll->descr->nb_reg_funcs);
 145
 146     /* Build the DOS and NT headers */
 147
 148     dos->e_magic  = IMAGE_DOS_SIGNATURE;
 149     dos->e_lfanew = sizeof(*dos);
 150
 151     nt->Signature                       = IMAGE_NT_SIGNATURE;
 152     nt->FileHeader.Machine              = IMAGE_FILE_MACHINE_I386;
 153     nt->FileHeader.NumberOfSections     = 2;  /* exports + code */
 154     nt->FileHeader.SizeOfOptionalHeader = sizeof(nt->OptionalHeader);
 155     nt->FileHeader.Characteristics      = IMAGE_FILE_DLL;
 156
 157     nt->OptionalHeader.Magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
 158     nt->OptionalHeader.SizeOfCode                  = 0x1000;
 159     nt->OptionalHeader.SizeOfInitializedData       = 0;
 160     nt->OptionalHeader.SizeOfUninitializedData     = 0;
 161     nt->OptionalHeader.ImageBase                   = (DWORD)addr;
 162     nt->OptionalHeader.SectionAlignment            = 0x1000;
 163     nt->OptionalHeader.FileAlignment               = 0x1000;
 164     nt->OptionalHeader.MajorOperatingSystemVersion = 1;
 165     nt->OptionalHeader.MinorOperatingSystemVersion = 0;
 166     nt->OptionalHeader.MajorSubsystemVersion       = 4;
 167     nt->OptionalHeader.MinorSubsystemVersion       = 0;
 168     nt->OptionalHeader.SizeOfImage                 = size;
 169     nt->OptionalHeader.SizeOfHeaders               = (BYTE *)exp - addr;
 170     nt->OptionalHeader.NumberOfRvaAndSizes = IMAGE_NUMBEROF_DIRECTORY_ENTRIES;
 171
 172     /* Build the export directory */
 173
 174     dir = &nt->OptionalHeader.DataDirectory[IMAGE_FILE_EXPORT_DIRECTORY];
 175     dir->VirtualAddress = (BYTE *)exp - addr;
 176     dir->Size = sizeof(*exp)
 177                 + dll->descr->nb_funcs * sizeof(LPVOID)
 178                 + dll->descr->nb_names * sizeof(LPSTR);
 179
 180     /* Build the exports section */
 181
 182     strcpy( sec->Name, ".edata" );
 183     sec->Misc.VirtualSize = dir->Size;
 184     sec->VirtualAddress   = (BYTE *)exp - addr;
 185     sec->SizeOfRawData    = dir->Size;
 186     sec->PointerToRawData = (BYTE *)exp - addr;
 187     sec->Characteristics  = (IMAGE_SCN_CNT_INITIALIZED_DATA |
 188                              IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ |
 189                              IMAGE_SCN_MEM_WRITE);
 190
 191     /* Build the code section */
 192
 193     sec++;
 194     strcpy( sec->Name, ".code" );
 195     sec->SizeOfRawData = dll->descr->nb_reg_funcs * sizeof(REG_ENTRY_POINT);
 196 #ifdef __i386__
 197     if (debugging_relay)
 198         sec->SizeOfRawData += dll->descr->nb_funcs * sizeof(DEBUG_ENTRY_POINT);
 199 #endif
 200     sec->Misc.VirtualSize = sec->SizeOfRawData;
 201     sec->VirtualAddress   = (BYTE *)regs - addr;
 202     sec->PointerToRawData = (BYTE *)regs - addr;
 203     sec->Characteristics  = (IMAGE_SCN_CNT_INITIALIZED_DATA |
 204                              IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ);
 205
 206     /* Build the exports section data */
 207
 208     exp->Name                  = (BYTE *)dll->descr->name - addr;  /*??*/
 209     exp->Base                  = dll->descr->base;
 210     exp->NumberOfFunctions     = dll->descr->nb_funcs;
 211     exp->NumberOfNames         = dll->descr->nb_names;
 212     exp->AddressOfFunctions    = (LPDWORD *)((BYTE *)funcs - addr);
 213     exp->AddressOfNames        = (LPDWORD *)((BYTE *)names - addr);
 214     exp->AddressOfNameOrdinals = (LPWORD *)((BYTE *)dll->descr->ordinals - addr);
 215
 216     /* Build the funcs table */
 217
 218     if (debugging_relay) dll->dbg_funcs = debug;
 219     for (i = 0; i < dll->descr->nb_funcs; i++, funcs++, debug++)
 220     {
 221         BYTE args = dll->descr->args[i];
 222         if (!dll->descr->functions[i]) continue;
 223 #ifdef __i386__
 224         switch(args)
 225         {
 226         case 0xfe:  /* register func */
 227             regs->pushl       = 0x68;
 228             regs->func        = (DWORD)dll->descr->functions[i];
 229             regs->jmp         = 0xe9;
 230             regs->call32_regs = (DWORD)CALL32_Regs - (DWORD)&regs->nop;
 231             regs->nop         = 0x9090;
 232             if (debugging_relay)
 233             {
 234                 debug->call       = 0xe8;
 235                 debug->callfrom32 = (DWORD)regs - (DWORD)&debug->ret;
 236                 debug->ret        = 0x90;  /* nop */
 237                 debug->args       = 0;
 238                 *funcs = (LPVOID)((BYTE *)debug - addr);
 239             }
 240             else *funcs = (LPVOID)((BYTE *)regs - addr);
 241             regs++;
 242             break;
 243         case 0xff:  /* stub or extern */
 244             *funcs = (LPVOID)((BYTE *)dll->descr->functions[i] - addr);
 245             break;
 246         default:  /* normal function (stdcall or cdecl) */
 247             if (debugging_relay)
 248             {
 249                 debug->call       = 0xe8;
 250                 debug->callfrom32 = (DWORD)RELAY_CallFrom32 -
 251                                     (DWORD)&debug->ret;
 252                 debug->ret        = (args & 0x80) ? 0xc3 : 0xc2; /*ret/ret $n*/
 253                 debug->args       = (args & 0x7f) * sizeof(int);
 254                 *funcs = (LPVOID)((BYTE *)debug - addr);
 255             }
 256             else
 257                 *funcs = (LPVOID)((BYTE *)dll->descr->functions[i] - addr);
 258             break;
 259         }
 260 #else  /* __i386__ */
 261         *funcs = (LPVOID)((BYTE *)dll->descr->functions[i] - addr);
 262 #endif  /* __i386__ */
 263     }
 264
 265     /* Build the names table */
 266
 267     for (i = 0; i < exp->NumberOfNames; i++, names++)
 268         if (dll->descr->names[i])
 269             *names = (LPSTR)((BYTE *)dll->descr->names[i] - addr);
 270
 271     /* Create a modref */
 272
 273     pem = (PE_MODREF *)HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
 274                                   sizeof(*pem) );
 275     pem->module = (HMODULE32)addr;
 276     pem->pe_export = exp;
 277     pem->next = pCurrentProcess->modref_list;
 278     pCurrentProcess->modref_list = pem;
 279
 280     /* Create a Win16 dummy module */
 281
 282     sprintf( ofs.szPathName, "%s.DLL", dll->descr->name );
 283     hModule = MODULE_CreateDummyModule( &ofs );
 284     pModule = (NE_MODULE *)GlobalLock16( hModule );
 285     pModule->flags = NE_FFLAGS_SINGLEDATA | NE_FFLAGS_BUILTIN |
 286                      NE_FFLAGS_LIBMODULE | NE_FFLAGS_WIN32;
 287     pModule->module32 = (HMODULE32)addr;
 288     return pModule->module32;
 289 }
 290
 291
 292 /***********************************************************************
 293  *           BUILTIN32_LoadModule
 294  *
 295  * Load a built-in module. If the 'force' parameter is FALSE, we only
 296  * load the module if it has not been disabled via the -dll option.
 297  */
 298 HMODULE32 BUILTIN32_LoadModule( LPCSTR name, BOOL32 force )
 299 {
 300     BUILTIN32_DLL *table;
 301     char dllname[16], *p;
 302
 303     /* Fix the name in case we have a full path and extension */
 304
 305     if ((p = strrchr( name, '\\' ))) name = p + 1;
 306     lstrcpyn32A( dllname, name, sizeof(dllname) );
 307     if ((p = strrchr( dllname, '.' ))) *p = '\0';
 308
 309     for (table = BuiltinDLLs; table->descr; table++)
 310         if (!lstrcmpi32A( table->descr->name, dllname )) break;
 311     if (!table->descr) return 0;
 312     if (!table->used && !force) return 0;
 313
 314     return BUILTIN32_DoLoadModule( table );
 315 }
 316
 317
 318 /***********************************************************************
 319  *           BUILTIN32_GetEntryPoint
 320  *
 321  * Return the name of the DLL entry point corresponding
 322  * to a relay entry point address. This is used only by relay debugging.
 323  *
 324  * This function _must_ return the real entry point to call
 325  * after the debug info is printed.
 326  */
 327 ENTRYPOINT32 BUILTIN32_GetEntryPoint( char *buffer, void *relay,
 328                                       unsigned int *typemask )
 329 {
 330     BUILTIN32_DLL *dll;
 331     int ordinal, i;
 332
 333     /* First find the module */
 334
 335     for (dll = BuiltinDLLs; dll->descr; dll++)
 336         if (((void *)dll->dbg_funcs <= relay) &&
 337             ((void *)(dll->dbg_funcs + dll->descr->nb_funcs) > relay))
 338             break;
 339     assert(dll->descr);
 340
 341     /* Now find the function */
 342
 343     ordinal = ((DWORD)relay-(DWORD)dll->dbg_funcs) / sizeof(DEBUG_ENTRY_POINT);
 344     for (i = 0; i < dll->descr->nb_names; i++)
 345         if (dll->descr->ordinals[i] == ordinal) break;
 346     assert( i < dll->descr->nb_names );
 347
 348     sprintf( buffer, "%s.%d: %s", dll->descr->name, ordinal + dll->descr->base,
 349              dll->descr->names[i] );
 350     *typemask = dll->descr->argtypes[ordinal];
 351     return dll->descr->functions[ordinal];
 352 }
 353
 354
 355 /***********************************************************************
 356  *           BUILTIN32_Unimplemented
 357  *
 358  * This function is called for unimplemented 32-bit entry points (declared
 359  * as 'stub' in the spec file).
 360  */
 361 void BUILTIN32_Unimplemented( const BUILTIN32_DESCRIPTOR *descr, int ordinal )
 362 {
 363     const char *func_name = "???";
 364     int i;
 365
 366     __RESTORE_ES;  /* Just in case */
 367
 368     for (i = 0; i < descr->nb_names; i++)
 369         if (descr->ordinals[i] + descr->base == ordinal) break;
 370     if (i < descr->nb_names) func_name = descr->names[i];
 371
 372     fprintf( stderr, "No handler for Win32 routine %s.%d: %s",
 373              descr->name, ordinal, func_name );
 374 #ifdef __GNUC__
 375     fprintf( stderr, " (called from %p)", __builtin_return_address(1) );
 376 #endif
 377     fprintf( stderr, "\n" );
 378     TASK_KillCurrentTask(1);
 379 }