if1632/relay.c

   1 /*
   2  * Copyright 1993 Robert J. Amstadt
   3  * Copyright 1995 Alexandre Julliard
   4  */
   5
   6 #include <assert.h>
   7 #include <stdlib.h>
   8 #include "windows.h"
   9 #include "winnt.h"
  10 #include "global.h"
  11 #include "heap.h"
  12 #include "module.h"
  13 #include "stackframe.h"
  14 #include "task.h"
  15 #include "debugstr.h"
  16 #include "debug.h"
  17 #include "main.h"
  18
  19
  20 /***********************************************************************
  21  *           RELAY_Init
  22  */
  23 BOOL32 RELAY_Init(void)
  24 {
  25     WORD codesel;
  26
  27       /* Allocate the code selector for CallTo16 routines */
  28
  29     extern void CALLTO16_Start(), CALLTO16_End();
  30     extern void CALLTO16_Ret_word(), CALLTO16_Ret_long();
  31     extern void CALLTO16_Ret_eax();
  32     extern void CALL32_CBClient_Ret();
  33     extern void CALL32_CBClientEx_Ret();
  34     extern DWORD CALLTO16_RetAddr_word;
  35     extern DWORD CALLTO16_RetAddr_long;
  36     extern DWORD CALLTO16_RetAddr_eax;
  37     extern DWORD CALL32_CBClient_RetAddr;
  38     extern DWORD CALL32_CBClientEx_RetAddr;
  39
  40     codesel = GLOBAL_CreateBlock( GMEM_FIXED, (void *)CALLTO16_Start,
  41                                    (int)CALLTO16_End - (int)CALLTO16_Start,
  42                                    0, TRUE, TRUE, FALSE, NULL );
  43     if (!codesel) return FALSE;
  44
  45       /* Patch the return addresses for CallTo16 routines */
  46
  47     CALLTO16_RetAddr_word=MAKELONG( (int)CALLTO16_Ret_word-(int)CALLTO16_Start,
  48                                     codesel );
  49     CALLTO16_RetAddr_long=MAKELONG( (int)CALLTO16_Ret_long-(int)CALLTO16_Start,
  50                                     codesel );
  51     CALLTO16_RetAddr_eax =MAKELONG( (int)CALLTO16_Ret_eax -(int)CALLTO16_Start,
  52                                     codesel );
  53     CALL32_CBClient_RetAddr =
  54         MAKELONG( (int)CALL32_CBClient_Ret -(int)CALLTO16_Start, codesel );
  55     CALL32_CBClientEx_RetAddr =
  56         MAKELONG( (int)CALL32_CBClientEx_Ret -(int)CALLTO16_Start, codesel );
  57
  58     /* Create built-in modules */
  59     if (!BUILTIN_Init()) return FALSE;
  60
  61     /* Initialize thunking */
  62     return THUNK_Init();
  63 }
  64
  65
  66 /* from relay32/relay386.c */
  67 extern char **debug_relay_excludelist,**debug_relay_includelist;
  68
  69 /***********************************************************************
  70  *           RELAY_DebugCallFrom16
  71  */
  72 void RELAY_DebugCallFrom16( int func_type, char *args,
  73                             void *entry_point, CONTEXT *context )
  74 {
  75     STACK16FRAME *frame;
  76     WORD ordinal;
  77     char *args16;
  78     const char *funstr;
  79     int i;
  80
  81     if (!TRACE_ON(relay)) return;
  82
  83     frame = CURRENT_STACK16;
  84     funstr = BUILTIN_GetEntryPoint16(frame->entry_cs,frame->entry_ip,&ordinal);
  85     if (!funstr) return; /* happens for the two snoop register relays */
  86     if (!RELAY_ShowDebugmsgRelay(funstr)) return;
  87     DPRINTF( "Call %s(",funstr);
  88     VA_START16( args16 );
  89
  90     if (func_type & 4)  /* cdecl */
  91     {
  92         while (*args)
  93         {
  94             switch(*args)
  95             {
  96             case 'w':
  97             case 's':
  98                 DPRINTF( "0x%04x", *(WORD *)args16 );
  99                 args16 += 2;
 100                 break;
 101             case 'l':
 102                 DPRINTF( "0x%08x", *(int *)args16 );
 103                 args16 += 4;
 104                 break;
 105             case 't':
 106                 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
 107                 if (HIWORD(*(SEGPTR *)args16))
 108                     debug_dumpstr( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 ));
 109                 args16 += 4;
 110                 break;
 111             case 'p':
 112                 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
 113                 args16 += 4;
 114                 break;
 115             case 'T':
 116                 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
 117                 if (HIWORD( *(SEGPTR *)args16 ))
 118                     debug_dumpstr( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 ));
 119                 args16 += 4;
 120                 break;
 121             }
 122             args++;
 123             if (*args) DPRINTF( "," );
 124         }
 125     }
 126     else  /* not cdecl */
 127     {
 128         /* Start with the last arg */
 129         for (i = 0; args[i]; i++)
 130         {
 131             switch(args[i])
 132             {
 133             case 'w':
 134             case 's':
 135                 args16 += 2;
 136                 break;
 137             case 'l':
 138             case 'p':
 139             case 't':
 140             case 'T':
 141                 args16 += 4;
 142                 break;
 143             }
 144         }
 145
 146         while (*args)
 147         {
 148             switch(*args)
 149             {
 150             case 'w':
 151             case 's':
 152                 args16 -= 2;
 153                 DPRINTF( "0x%04x", *(WORD *)args16 );
 154                 break;
 155             case 'l':
 156                 args16 -= 4;
 157                 DPRINTF( "0x%08x", *(int *)args16 );
 158                 break;
 159             case 't':
 160                 args16 -= 4;
 161                 DPRINTF( "0x%08x", *(int *)args16 );
 162                 if (HIWORD(*(SEGPTR *)args16))
 163                     debug_dumpstr( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 ));
 164                 break;
 165             case 'p':
 166                 args16 -= 4;
 167                 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
 168                 break;
 169             case 'T':
 170                 args16 -= 4;
 171                 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
 172                 if (HIWORD( *(SEGPTR *)args16 ))
 173                     debug_dumpstr( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 ));
 174                 break;
 175             }
 176             args++;
 177             if (*args) DPRINTF( "," );
 178         }
 179     }
 180
 181     DPRINTF( ") ret=%04x:%04x ds=%04x\n", frame->cs, frame->ip, frame->ds );
 182     VA_END16( args16 );
 183
 184     if (func_type & 2)  /* register function */
 185         DPRINTF( "     AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n",
 186                  AX_reg(context), BX_reg(context), CX_reg(context),
 187                  DX_reg(context), SI_reg(context), DI_reg(context),
 188                  (WORD)ES_reg(context), EFL_reg(context) );
 189 }
 190
 191
 192 /***********************************************************************
 193  *           RELAY_DebugCallFrom16Ret
 194  */
 195 void RELAY_DebugCallFrom16Ret( int func_type, int ret_val, CONTEXT *context)
 196 {
 197     STACK16FRAME *frame;
 198     WORD ordinal;
 199     const char *funstr;
 200
 201     if (!TRACE_ON(relay)) return;
 202     frame = CURRENT_STACK16;
 203     funstr = BUILTIN_GetEntryPoint16(frame->entry_cs,frame->entry_ip,&ordinal);
 204     if (!funstr) return;
 205     if (!RELAY_ShowDebugmsgRelay(funstr)) return;
 206     DPRINTF( "Ret  %s() ",funstr);
 207     switch(func_type)
 208     {
 209     case 0: /* long */
 210         DPRINTF( "retval=0x%08x ret=%04x:%04x ds=%04x\n",
 211                  ret_val, frame->cs, frame->ip, frame->ds );
 212         break;
 213     case 1: /* word */
 214         DPRINTF( "retval=0x%04x ret=%04x:%04x ds=%04x\n",
 215                  ret_val & 0xffff, frame->cs, frame->ip, frame->ds );
 216         break;
 217     case 2: /* regs */
 218         DPRINTF("retval=none ret=%04x:%04x ds=%04x\n",
 219                 (WORD)CS_reg(context), IP_reg(context), (WORD)DS_reg(context));
 220         DPRINTF("     AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n",
 221                 AX_reg(context), BX_reg(context), CX_reg(context),
 222                 DX_reg(context), SI_reg(context), DI_reg(context),
 223                 (WORD)ES_reg(context), EFL_reg(context) );
 224         break;
 225     }
 226 }
 227
 228
 229 /***********************************************************************
 230  *           RELAY_Unimplemented16
 231  *
 232  * This function is called for unimplemented 16-bit entry points (declared
 233  * as 'stub' in the spec file).
 234  */
 235 void RELAY_Unimplemented16(void)
 236 {
 237     WORD ordinal;
 238     STACK16FRAME *frame = CURRENT_STACK16;
 239     MSG("No handler for Win16 routine %s (called from %04x:%04x)\n",
 240             BUILTIN_GetEntryPoint16(frame->entry_cs,frame->entry_ip,&ordinal),
 241             frame->cs, frame->ip );
 242     ExitProcess(1);
 243 }
 244
 245
 246 /***********************************************************************
 247  *           RELAY_DebugCallTo16
 248  *
 249  * 'stack' points to the called function address on the 32-bit stack.
 250  * Stack layout:
 251  *  ...        ...
 252  * (stack+8)   arg2
 253  * (stack+4)   arg1
 254  * (stack)     func to call
 255  */
 256 void RELAY_DebugCallTo16( int* stack, int nb_args )
 257 {
 258     THDB *thdb;
 259
 260     if (!TRACE_ON(relay)) return;
 261     thdb = THREAD_Current();
 262
 263     if (nb_args == -1)  /* Register function */
 264     {
 265         CONTEXT *context = (CONTEXT *)stack[0];
 266         WORD *stack16 = (WORD *)THREAD_STACK16(thdb);
 267         DPRINTF("CallTo16(func=%04lx:%04x,ds=%04lx",
 268                 CS_reg(context), IP_reg(context), DS_reg(context) );
 269         nb_args = stack[1] / sizeof(WORD);
 270         while (nb_args--) {
 271             --stack16;
 272             DPRINTF( ",0x%04x", *stack16 );
 273         }
 274         DPRINTF(") ss:sp=%04x:%04x\n", SELECTOROF(thdb->cur_stack),
 275                 OFFSETOF(thdb->cur_stack) );
 276         DPRINTF("     AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x BP=%04x ES=%04x FS=%04x\n",
 277                 AX_reg(context), BX_reg(context), CX_reg(context),
 278                 DX_reg(context), SI_reg(context), DI_reg(context),
 279                 BP_reg(context), (WORD)ES_reg(context), (WORD)FS_reg(context) );
 280     }
 281     else
 282     {
 283         DPRINTF("CallTo16(func=%04x:%04x,ds=%04x",
 284                 HIWORD(stack[0]), LOWORD(stack[0]),
 285                 SELECTOROF(thdb->cur_stack) );
 286         stack++;
 287         while (nb_args--) {
 288             DPRINTF(",0x%04x", *stack );
 289             stack++;
 290         }
 291         DPRINTF(") ss:sp=%04x:%04x\n", SELECTOROF(thdb->cur_stack),
 292                 OFFSETOF(thdb->cur_stack) );
 293     }
 294 }
 295
 296
 297 /***********************************************************************
 298  *           RELAY_DebugCallTo16Ret
 299  */
 300 void RELAY_DebugCallTo16Ret( int ret_val )
 301 {
 302     THDB *thdb;
 303
 304     if (!TRACE_ON(relay)) return;
 305     thdb = THREAD_Current();
 306
 307     DPRINTF("CallTo16() ss:sp=%04x:%04x retval=0x%08x\n",
 308             SELECTOROF(thdb->cur_stack), OFFSETOF(thdb->cur_stack), ret_val);
 309 }
 310
 311
 312 /**********************************************************************
 313  *           Catch    (KERNEL.55)
 314  *
 315  * Real prototype is:
 316  *   INT16 WINAPI Catch( LPCATCHBUF lpbuf );
 317  */
 318 void WINAPI Catch( CONTEXT *context )
 319 {
 320     VA_LIST16 valist;
 321     SEGPTR buf;
 322     LPCATCHBUF lpbuf;
 323
 324     VA_START16( valist );
 325     buf   = VA_ARG16( valist, SEGPTR );
 326     lpbuf = (LPCATCHBUF)PTR_SEG_TO_LIN( buf );
 327     VA_END16( valist );
 328
 329     /* Note: we don't save the current ss, as the catch buffer is */
 330     /* only 9 words long. Hopefully no one will have the silly    */
 331     /* idea to change the current stack before calling Throw()... */
 332
 333     /* Windows uses:
 334      * lpbuf[0] = ip
 335      * lpbuf[1] = cs
 336      * lpbuf[2] = sp
 337      * lpbuf[3] = bp
 338      * lpbuf[4] = si
 339      * lpbuf[5] = di
 340      * lpbuf[6] = ds
 341      * lpbuf[7] = unused
 342      * lpbuf[8] = ss
 343      */
 344
 345     lpbuf[0] = IP_reg(context);
 346     lpbuf[1] = CS_reg(context);
 347     /* Windows pushes 4 more words before saving sp */
 348     lpbuf[2] = SP_reg(context) - 4 * sizeof(WORD);
 349     lpbuf[3] = BP_reg(context);
 350     lpbuf[4] = SI_reg(context);
 351     lpbuf[5] = DI_reg(context);
 352     lpbuf[6] = DS_reg(context);
 353     lpbuf[7] = 0;
 354     lpbuf[8] = SS_reg(context);
 355     AX_reg(context) = 0;  /* Return 0 */
 356 }
 357
 358
 359 /**********************************************************************
 360  *           Throw    (KERNEL.56)
 361  *
 362  * Real prototype is:
 363  *   INT16 WINAPI Throw( LPCATCHBUF lpbuf, INT16 retval );
 364  */
 365 void WINAPI Throw( CONTEXT *context )
 366 {
 367     VA_LIST16 valist;
 368     SEGPTR buf;
 369     LPCATCHBUF lpbuf;
 370     STACK16FRAME *pFrame;
 371     STACK32FRAME *frame32;
 372     THDB *thdb = THREAD_Current();
 373
 374     VA_START16( valist );
 375     AX_reg(context) = VA_ARG16( valist, WORD );  /* retval */
 376     buf    = VA_ARG16( valist, SEGPTR );
 377     lpbuf  = (LPCATCHBUF)PTR_SEG_TO_LIN( buf );
 378     VA_END16( valist );
 379
 380     /* Find the frame32 corresponding to the frame16 we are jumping to */
 381     pFrame = THREAD_STACK16( thdb );
 382     frame32 = THREAD_STACK16( thdb )->frame32;
 383     while (frame32 && frame32->frame16)
 384     {
 385         if (OFFSETOF(frame32->frame16) < OFFSETOF(thdb->cur_stack))
 386             break;  /* Something strange is going on */
 387         if (OFFSETOF(frame32->frame16) > lpbuf[2])
 388         {
 389             /* We found the right frame */
 390             pFrame->frame32 = frame32;
 391             break;
 392         }
 393         frame32 = ((STACK16FRAME *)PTR_SEG_TO_LIN(frame32->frame16))->frame32;
 394     }
 395
 396     IP_reg(context) = lpbuf[0];
 397     CS_reg(context) = lpbuf[1];
 398     SP_reg(context) = lpbuf[2] + 4 * sizeof(WORD) - sizeof(WORD) /*extra arg*/;
 399     BP_reg(context) = lpbuf[3];
 400     SI_reg(context) = lpbuf[4];
 401     DI_reg(context) = lpbuf[5];
 402     DS_reg(context) = lpbuf[6];
 403
 404     if (lpbuf[8] != SS_reg(context))
 405         ERR(relay, "Switching stack segment with Throw() not supported; expect crash now\n" );
 406
 407     if (TRACE_ON(relay))  /* Make sure we have a valid entry point address */
 408     {
 409         static FARPROC16 entryPoint = NULL;
 410
 411         if (!entryPoint)  /* Get entry point for Throw() */
 412             entryPoint = NE_GetEntryPoint( GetModuleHandle16("KERNEL"), 56 );
 413         pFrame->entry_cs = SELECTOROF(entryPoint);
 414         pFrame->entry_ip = OFFSETOF(entryPoint);
 415     }
 416 }
 417
 418
 419 /**********************************************************************
 420  *           RELAY_CallProc32W
 421  *
 422  * Helper for CallProc[Ex]32W
 423  */
 424 static DWORD RELAY_CallProc32W(int Ex)
 425 {
 426         DWORD nrofargs, argconvmask;
 427         FARPROC32 proc32;
 428         DWORD *args, ret;
 429         VA_LIST16 valist;
 430         int i;
 431         int aix;
 432         dbg_decl_str(relay, 1024);
 433
 434         VA_START16( valist );
 435         nrofargs    = VA_ARG16( valist, DWORD );
 436         argconvmask = VA_ARG16( valist, DWORD );
 437         proc32      = VA_ARG16( valist, FARPROC32 );
 438         dsprintf(relay, "CallProc32W(%ld,%ld,%p, Ex%d args[",nrofargs,argconvmask,proc32,Ex);
 439         args = (DWORD*)HEAP_xalloc( GetProcessHeap(), 0,
 440                                     sizeof(DWORD)*nrofargs );
 441         /* CallProcEx doesn't need its args reversed */
 442         for (i=0;i<nrofargs;i++) {
 443                 if (Ex) {
 444                    aix = i;
 445                 } else {
 446                    aix = nrofargs - i - 1;
 447                 }
 448                 if (argconvmask & (1<<i))
 449                 {
 450                     SEGPTR ptr = VA_ARG16( valist, SEGPTR );
 451                     args[aix] = (DWORD)PTR_SEG_TO_LIN(ptr);
 452                     dsprintf(relay,"%08lx(%p),",ptr,PTR_SEG_TO_LIN(ptr));
 453                 }
 454                 else
 455                 {
 456                     args[aix] = VA_ARG16( valist, DWORD );
 457                     dsprintf(relay,"%ld,",args[aix]);
 458                 }
 459         }
 460         dsprintf(relay,"])");
 461         VA_END16( valist );
 462
 463         if (!proc32) ret = 0;
 464         else switch (nrofargs)
 465         {
 466         case 0: ret = proc32();
 467                 break;
 468         case 1: ret = proc32(args[0]);
 469                 break;
 470         case 2: ret = proc32(args[0],args[1]);
 471                 break;
 472         case 3: ret = proc32(args[0],args[1],args[2]);
 473                 break;
 474         case 4: ret = proc32(args[0],args[1],args[2],args[3]);
 475                 break;
 476         case 5: ret = proc32(args[0],args[1],args[2],args[3],args[4]);
 477                 break;
 478         case 6: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5]);
 479                 break;
 480         case 7: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
 481                 break;
 482         case 8: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
 483                 break;
 484         case 9: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8]);
 485                 break;
 486         case 10:        ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9]);
 487                 break;
 488         case 11:        ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10]);
 489                 break;
 490         default:
 491                 /* FIXME: should go up to 32  arguments */
 492                 ERR(relay,"Unsupported number of arguments %ld, please report.\n",nrofargs);
 493                 ret = 0;
 494                 break;
 495         }
 496         /* POP nrofargs DWORD arguments and 3 DWORD parameters */
 497         if (!Ex) STACK16_POP( THREAD_Current(),
 498                               (3 + nrofargs) * sizeof(DWORD) );
 499
 500         TRACE(relay,"%s - returns %08lx\n",dbg_str(relay),ret);
 501         HeapFree( GetProcessHeap(), 0, args );
 502         return ret;
 503 }
 504
 505
 506 /**********************************************************************
 507  *           CallProc32W    (KERNEL.517)
 508  */
 509 DWORD WINAPI WIN16_CallProc32W()
 510 {
 511         return RELAY_CallProc32W(0);
 512 }
 513
 514
 515 /**********************************************************************
 516 *           CallProcEx32W()   (KERNEL.518)
 517 *
 518 *      C - style linkage to CallProc32W - caller pops stack.
 519 */
 520 DWORD WINAPI WIN16_CallProcEx32W()
 521 {
 522         return RELAY_CallProc32W(TRUE);
 523 }