if1632/builtin.c

   1 /*
   2  * Built-in modules
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  */
   6
   7 #include <assert.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include "windows.h"
  11 #include "builtin32.h"
  12 #include "gdi.h"
  13 #include "global.h"
  14 #include "heap.h"
  15 #include "module.h"
  16 #include "miscemu.h"
  17 #include "neexe.h"
  18 #include "stackframe.h"
  19 #include "user.h"
  20 #include "process.h"
  21 #include "stddebug.h"
  22 #include "debug.h"
  23
  24 /* Built-in modules descriptors */
  25 /* Don't change these structures! (see tools/build.c) */
  26
  27 typedef struct
  28 {
  29     const char *name;              /* DLL name */
  30     void       *module_start;      /* 32-bit address of the module data */
  31     int         module_size;       /* Size of the module data */
  32     const BYTE *code_start;        /* 32-bit address of DLL code */
  33     const BYTE *data_start;        /* 32-bit address of DLL data */
  34 } WIN16_DESCRIPTOR;
  35
  36 typedef struct
  37 {
  38     const WIN16_DESCRIPTOR *descr;     /* DLL descriptor */
  39     int                     flags;     /* flags (see below) */
  40 } BUILTIN16_DLL;
  41
  42 /* DLL flags */
  43 #define DLL_FLAG_NOT_USED    0x01  /* Use original Windows DLL if possible */
  44 #define DLL_FLAG_ALWAYS_USED 0x02  /* Always use built-in DLL */
  45
  46 /* 16-bit DLLs */
  47
  48 extern const WIN16_DESCRIPTOR COMMDLG_Descriptor;
  49 extern const WIN16_DESCRIPTOR COMPOBJ_Descriptor;
  50 extern const WIN16_DESCRIPTOR DDEML_Descriptor;
  51 extern const WIN16_DESCRIPTOR GDI_Descriptor;
  52 extern const WIN16_DESCRIPTOR KERNEL_Descriptor;
  53 extern const WIN16_DESCRIPTOR KEYBOARD_Descriptor;
  54 extern const WIN16_DESCRIPTOR LZEXPAND_Descriptor;
  55 extern const WIN16_DESCRIPTOR MMSYSTEM_Descriptor;
  56 extern const WIN16_DESCRIPTOR MOUSE_Descriptor;
  57 extern const WIN16_DESCRIPTOR OLE2CONV_Descriptor;
  58 extern const WIN16_DESCRIPTOR OLE2DISP_Descriptor;
  59 extern const WIN16_DESCRIPTOR OLE2NLS_Descriptor;
  60 extern const WIN16_DESCRIPTOR OLE2PROX_Descriptor;
  61 extern const WIN16_DESCRIPTOR OLE2THK_Descriptor;
  62 extern const WIN16_DESCRIPTOR OLE2_Descriptor;
  63 extern const WIN16_DESCRIPTOR OLECLI_Descriptor;
  64 extern const WIN16_DESCRIPTOR OLESVR_Descriptor;
  65 extern const WIN16_DESCRIPTOR SHELL_Descriptor;
  66 extern const WIN16_DESCRIPTOR SOUND_Descriptor;
  67 extern const WIN16_DESCRIPTOR STORAGE_Descriptor;
  68 extern const WIN16_DESCRIPTOR STRESS_Descriptor;
  69 extern const WIN16_DESCRIPTOR SYSTEM_Descriptor;
  70 extern const WIN16_DESCRIPTOR TOOLHELP_Descriptor;
  71 extern const WIN16_DESCRIPTOR USER_Descriptor;
  72 extern const WIN16_DESCRIPTOR VER_Descriptor;
  73 extern const WIN16_DESCRIPTOR W32SYS_Descriptor;
  74 extern const WIN16_DESCRIPTOR WIN32S16_Descriptor;
  75 extern const WIN16_DESCRIPTOR WIN87EM_Descriptor;
  76 extern const WIN16_DESCRIPTOR WINASPI_Descriptor;
  77 extern const WIN16_DESCRIPTOR WINDEBUG_Descriptor;
  78 extern const WIN16_DESCRIPTOR WING_Descriptor;
  79 extern const WIN16_DESCRIPTOR WINSOCK_Descriptor;
  80 extern const WIN16_DESCRIPTOR WPROCS_Descriptor;
  81
  82 /* Table of all built-in DLLs */
  83
  84 static BUILTIN16_DLL BuiltinDLLs[] =
  85 {
  86     { &KERNEL_Descriptor,   DLL_FLAG_ALWAYS_USED },
  87     { &USER_Descriptor,     DLL_FLAG_ALWAYS_USED },
  88     { &GDI_Descriptor,      DLL_FLAG_ALWAYS_USED },
  89     { &SYSTEM_Descriptor,   DLL_FLAG_ALWAYS_USED },
  90     { &WPROCS_Descriptor,   DLL_FLAG_ALWAYS_USED },
  91     { &WINDEBUG_Descriptor, DLL_FLAG_ALWAYS_USED },
  92     { &COMMDLG_Descriptor,  DLL_FLAG_NOT_USED },
  93     { &COMPOBJ_Descriptor,  DLL_FLAG_NOT_USED },
  94     { &DDEML_Descriptor,    DLL_FLAG_NOT_USED },
  95     { &KEYBOARD_Descriptor, 0 },
  96     { &LZEXPAND_Descriptor, 0 },
  97     { &MMSYSTEM_Descriptor, 0 },
  98     { &MOUSE_Descriptor,    0 },
  99     { &OLE2CONV_Descriptor, DLL_FLAG_NOT_USED },
 100     { &OLE2DISP_Descriptor, DLL_FLAG_NOT_USED },
 101     { &OLE2NLS_Descriptor,  DLL_FLAG_NOT_USED },
 102     { &OLE2PROX_Descriptor, DLL_FLAG_NOT_USED },
 103     { &OLE2THK_Descriptor,  DLL_FLAG_NOT_USED },
 104     { &OLE2_Descriptor,     DLL_FLAG_NOT_USED },
 105     { &OLECLI_Descriptor,   DLL_FLAG_NOT_USED },
 106     { &OLESVR_Descriptor,   DLL_FLAG_NOT_USED },
 107     { &SHELL_Descriptor,    0 },
 108     { &SOUND_Descriptor,    0 },
 109     { &STORAGE_Descriptor,  DLL_FLAG_NOT_USED },
 110     { &STRESS_Descriptor,   0 },
 111     { &TOOLHELP_Descriptor, 0 },
 112     { &VER_Descriptor,      0 },
 113     { &W32SYS_Descriptor,   0 },
 114     { &WIN32S16_Descriptor, 0 },
 115     { &WIN87EM_Descriptor,  DLL_FLAG_NOT_USED },
 116     { &WINASPI_Descriptor,  0 },
 117     { &WING_Descriptor,     0 },
 118     { &WINSOCK_Descriptor,  0 },
 119     /* Last entry */
 120     { NULL, 0 }
 121 };
 122
 123   /* Ordinal number for interrupt 0 handler in WPROCS.DLL */
 124 #define FIRST_INTERRUPT_ORDINAL 100
 125
 126
 127 /***********************************************************************
 128  *           BUILTIN_DoLoadModule16
 129  *
 130  * Load a built-in Win16 module. Helper function for BUILTIN_LoadModule
 131  * and BUILTIN_Init.
 132  */
 133 static HMODULE16 BUILTIN_DoLoadModule16( const WIN16_DESCRIPTOR *descr )
 134 {
 135     NE_MODULE *pModule;
 136     int minsize;
 137     SEGTABLEENTRY *pSegTable;
 138
 139     HMODULE16 hModule = GLOBAL_CreateBlock( GMEM_MOVEABLE, descr->module_start,
 140                                             descr->module_size, 0,
 141                                             FALSE, FALSE, FALSE, NULL );
 142     if (!hModule) return 0;
 143     FarSetOwner( hModule, hModule );
 144
 145     dprintf_module( stddeb, "Built-in %s: hmodule=%04x\n",
 146                     descr->name, hModule );
 147     pModule = (NE_MODULE *)GlobalLock16( hModule );
 148     pModule->self = hModule;
 149
 150     /* Allocate the code segment */
 151
 152     pSegTable = NE_SEG_TABLE( pModule );
 153     pSegTable->selector = GLOBAL_CreateBlock( GMEM_FIXED, descr->code_start,
 154                                               pSegTable->minsize, hModule,
 155                                               TRUE, TRUE, FALSE, NULL );
 156     if (!pSegTable->selector) return 0;
 157     pSegTable++;
 158
 159     /* Allocate the data segment */
 160
 161     minsize = pSegTable->minsize ? pSegTable->minsize : 0x10000;
 162     minsize += pModule->heap_size;
 163     if (minsize > 0x10000) minsize = 0x10000;
 164     pSegTable->selector = GLOBAL_Alloc( GMEM_FIXED, minsize,
 165                                         hModule, FALSE, FALSE, FALSE );
 166     if (!pSegTable->selector) return 0;
 167     if (pSegTable->minsize) memcpy( GlobalLock16( pSegTable->selector ),
 168                                     descr->data_start, pSegTable->minsize);
 169     if (pModule->heap_size)
 170         LocalInit( pSegTable->selector, pSegTable->minsize, minsize );
 171
 172     MODULE_RegisterModule( pModule );
 173     return hModule;
 174 }
 175
 176
 177 /***********************************************************************
 178  *           BUILTIN_Init
 179  *
 180  * Load all built-in modules marked as 'always used'.
 181  */
 182 BOOL32 BUILTIN_Init(void)
 183 {
 184     BUILTIN16_DLL *dll;
 185     NE_MODULE *pModule;
 186     WORD vector;
 187     HMODULE16 hModule;
 188
 189     for (dll = BuiltinDLLs; dll->descr; dll++)
 190     {
 191         if (dll->flags & DLL_FLAG_ALWAYS_USED)
 192             if (!BUILTIN_DoLoadModule16( dll->descr )) return FALSE;
 193     }
 194
 195     /* Set the USER and GDI heap selectors */
 196
 197     pModule      = MODULE_GetPtr( GetModuleHandle16( "USER" ));
 198     USER_HeapSel = (NE_SEG_TABLE( pModule ) + pModule->dgroup - 1)->selector;
 199     pModule      = MODULE_GetPtr( GetModuleHandle16( "GDI" ));
 200     GDI_HeapSel  = (NE_SEG_TABLE( pModule ) + pModule->dgroup - 1)->selector;
 201
 202     /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
 203
 204     hModule = GetModuleHandle16( "KERNEL" );
 205     MODULE_SetEntryPoint( hModule, 178, GetWinFlags() );
 206
 207     /* Initialize the real-mode selector entry points */
 208
 209     DOSMEM_InitExports( hModule );
 210
 211     /* Set interrupt vectors from entry points in WPROCS.DLL */
 212
 213     hModule = GetModuleHandle16( "WPROCS" );
 214     for (vector = 0; vector < 256; vector++)
 215     {
 216         FARPROC16 proc = MODULE_GetEntryPoint( hModule,
 217                                                FIRST_INTERRUPT_ORDINAL+vector);
 218         assert(proc);
 219         INT_SetHandler( vector, proc );
 220     }
 221
 222     return TRUE;
 223 }
 224
 225
 226 /***********************************************************************
 227  *           BUILTIN_LoadModule
 228  *
 229  * Load a built-in module. If the 'force' parameter is FALSE, we only
 230  * load the module if it has not been disabled via the -dll option.
 231  */
 232 HMODULE32 BUILTIN_LoadModule( LPCSTR name, BOOL32 force )
 233 {
 234     BUILTIN16_DLL *table;
 235     char dllname[16], *p;
 236
 237     /* Fix the name in case we have a full path and extension */
 238
 239     if ((p = strrchr( name, '\\' ))) name = p + 1;
 240     lstrcpyn32A( dllname, name, sizeof(dllname) );
 241     if ((p = strrchr( dllname, '.' ))) *p = '\0';
 242
 243     for (table = BuiltinDLLs; table->descr; table++)
 244         if (!lstrcmpi32A( table->descr->name, dllname )) break;
 245     if (!table->descr) return BUILTIN32_LoadModule( name, force );
 246     if ((table->flags & DLL_FLAG_NOT_USED) && !force) return 0;
 247
 248     return BUILTIN_DoLoadModule16( table->descr );
 249 }
 250
 251
 252 /***********************************************************************
 253  *           BUILTIN_GetEntryPoint16
 254  *
 255  * Return the ordinal and name corresponding to a CS:IP address.
 256  * This is used only by relay debugging.
 257  */
 258 LPCSTR BUILTIN_GetEntryPoint16( WORD cs, WORD ip, WORD *pOrd )
 259 {
 260     static char buffer[80];
 261     WORD ordinal, i, max_offset;
 262     register BYTE *p;
 263     NE_MODULE *pModule;
 264
 265     if (!(pModule = MODULE_GetPtr( FarGetOwner( GlobalHandle16(cs) ))))
 266         return NULL;
 267
 268     /* Search for the ordinal */
 269
 270     p = (BYTE *)pModule + pModule->entry_table;
 271     max_offset = 0;
 272     ordinal = 1;
 273     *pOrd = 0;
 274     while (*p)
 275     {
 276         switch(p[1])
 277         {
 278         case 0:    /* unused */
 279             ordinal += *p;
 280             p += 2;
 281             break;
 282         case 1:    /* code segment */
 283             i = *p;
 284             p += 2;
 285             while (i-- > 0)
 286             {
 287                 p++;
 288                 if ((*(WORD *)p <= ip) && (*(WORD *)p >= max_offset))
 289                 {
 290                     max_offset = *(WORD *)p;
 291                     *pOrd = ordinal;
 292                 }
 293                 p += 2;
 294                 ordinal++;
 295             }
 296             break;
 297         case 0xff: /* moveable (should not happen in built-in modules) */
 298             fprintf( stderr, "Built-in module has moveable entry\n" );
 299             ordinal += *p;
 300             p += 2 + *p * 6;
 301             break;
 302         default:   /* other segment */
 303             ordinal += *p;
 304             p += 2 + *p * 3;
 305             break;
 306         }
 307     }
 308
 309     /* Search for the name in the resident names table */
 310     /* (built-in modules have no non-resident table)   */
 311
 312     p = (BYTE *)pModule + pModule->name_table;
 313     while (*p)
 314     {
 315         p += *p + 1 + sizeof(WORD);
 316         if (*(WORD *)(p + *p + 1) == *pOrd) break;
 317     }
 318
 319     sprintf( buffer, "%.*s.%d: %.*s",
 320              *((BYTE *)pModule + pModule->name_table),
 321              (char *)pModule + pModule->name_table + 1,
 322              *pOrd, *p, (char *)(p + 1) );
 323     return buffer;
 324 }
 325
 326
 327 /**********************************************************************
 328  *          BUILTIN_DefaultIntHandler
 329  *
 330  * Default interrupt handler.
 331  */
 332 void BUILTIN_DefaultIntHandler( CONTEXT *context )
 333 {
 334     WORD ordinal;
 335     STACK16FRAME *frame = CURRENT_STACK16;
 336     BUILTIN_GetEntryPoint16( frame->entry_cs, frame->entry_ip, &ordinal );
 337     INT_BARF( context, ordinal - FIRST_INTERRUPT_ORDINAL );
 338 }
 339
 340
 341 /***********************************************************************
 342  *           BUILTIN_ParseDLLOptions
 343  *
 344  * Set runtime DLL usage flags
 345  */
 346 BOOL32 BUILTIN_ParseDLLOptions( const char *str )
 347 {
 348     BUILTIN16_DLL *dll;
 349     const char *p;
 350
 351     while (*str)
 352     {
 353         while (*str && isspace(*str)) str++;
 354         if (!*str) return TRUE;
 355         if ((*str != '+') && (*str != '-')) return FALSE;
 356         str++;
 357         if (!(p = strchr( str, ',' ))) p = str + strlen(str);
 358         while ((p > str) && isspace(p[-1])) p--;
 359         if (p == str) return FALSE;
 360         for (dll = BuiltinDLLs; dll->descr; dll++)
 361         {
 362             if (!lstrncmpi32A( str, dll->descr->name, (int)(p - str) ))
 363             {
 364                 if (str[-1] == '-')
 365                 {
 366                     if (dll->flags & DLL_FLAG_ALWAYS_USED) return FALSE;
 367                     dll->flags |= DLL_FLAG_NOT_USED;
 368                 }
 369                 else dll->flags &= ~DLL_FLAG_NOT_USED;
 370                 break;
 371             }
 372         }
 373         if (!dll->descr)
 374             if (!BUILTIN32_EnableDLL( str, (int)(p - str), (str[-1] == '+') ))
 375                 return FALSE;
 376         str = p;
 377         while (*str && (isspace(*str) || (*str == ','))) str++;
 378     }
 379     return TRUE;
 380 }
 381
 382
 383 /***********************************************************************
 384  *           BUILTIN_PrintDLLs
 385  *
 386  * Print the list of built-in DLLs that can be disabled.
 387  */
 388 void BUILTIN_PrintDLLs(void)
 389 {
 390     int i;
 391     BUILTIN16_DLL *dll;
 392
 393     fprintf(stderr,"Example: -dll -ole2    Do not use emulated OLE2.DLL\n");
 394     fprintf(stderr,"Available Win16 DLLs:\n");
 395     for (i = 0, dll = BuiltinDLLs; dll->descr; dll++)
 396     {
 397         if (!(dll->flags & DLL_FLAG_ALWAYS_USED))
 398             fprintf( stderr, "%-9s%c", dll->descr->name,
 399                      ((++i) % 8) ? ' ' : '\n' );
 400     }
 401     fprintf(stderr,"\n");
 402     BUILTIN32_PrintDLLs();
 403 }