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 <string.h>
   9 #include "wine/winbase16.h"
  10 #include "winnt.h"
  11 #include "heap.h"
  12 #include "module.h"
  13 #include "stackframe.h"
  14 #include "selectors.h"
  15 #include "builtin16.h"
  16 #include "task.h"
  17 #include "syslevel.h"
  18 #include "debugtools.h"
  19 #include "main.h"
  20 #include "callback.h"
  21
  22 DEFAULT_DEBUG_CHANNEL(relay);
  23
  24 /***********************************************************************
  25  *           RELAY_Init
  26  */
  27 BOOL RELAY_Init(void)
  28 {
  29 #ifdef __i386__
  30     WORD codesel;
  31
  32       /* Allocate the code selector for CallTo16 routines */
  33
  34     extern void Call16_Ret_Start(), Call16_Ret_End();
  35     extern void CallTo16_Ret();
  36     extern void CALL32_CBClient_Ret();
  37     extern void CALL32_CBClientEx_Ret();
  38     extern SEGPTR CallTo16_RetAddr;
  39     extern DWORD CallTo16_DataSelector;
  40     extern SEGPTR CALL32_CBClient_RetAddr;
  41     extern SEGPTR CALL32_CBClientEx_RetAddr;
  42
  43     codesel = SELECTOR_AllocBlock( (void *)Call16_Ret_Start,
  44                                    (char *)Call16_Ret_End - (char *)Call16_Ret_Start,
  45                                    WINE_LDT_FLAGS_CODE | WINE_LDT_FLAGS_32BIT );
  46     if (!codesel) return FALSE;
  47
  48       /* Patch the return addresses for CallTo16 routines */
  49
  50     CallTo16_DataSelector = __get_ds();
  51     CallTo16_RetAddr =
  52         PTR_SEG_OFF_TO_SEGPTR( codesel, (char*)CallTo16_Ret - (char*)Call16_Ret_Start );
  53     CALL32_CBClient_RetAddr =
  54         PTR_SEG_OFF_TO_SEGPTR( codesel, (char*)CALL32_CBClient_Ret - (char*)Call16_Ret_Start );
  55     CALL32_CBClientEx_RetAddr =
  56         PTR_SEG_OFF_TO_SEGPTR( codesel, (char*)CALL32_CBClientEx_Ret - (char*)Call16_Ret_Start );
  57 #endif
  58     return TRUE;
  59 }
  60
  61 /*
  62  * Stubs for the CallTo16/CallFrom16 routines on non-Intel architectures
  63  * (these will never be called but need to be present to satisfy the linker ...)
  64  */
  65 #ifndef __i386__
  66 WORD CALLBACK CallTo16Word( FARPROC16 target, INT nArgs )
  67 { assert( FALSE ); }
  68
  69 LONG CALLBACK CallTo16Long( FARPROC16 target, INT nArgs )
  70 { assert( FALSE ); }
  71
  72 void CALLBACK CallTo16RegisterShort( CONTEXT86 *context, INT nArgs )
  73 { assert( FALSE ); }
  74
  75 void CALLBACK CallTo16RegisterLong ( CONTEXT86 *context, INT nArgs )
  76 { assert( FALSE ); }
  77
  78 WORD __wine_call_from_16_word()  { assert( FALSE ); }
  79 LONG __wine_call_from_16_long()  { assert( FALSE ); }
  80 void __wine_call_from_16_regs()  { assert( FALSE ); }
  81 void __wine_call_from_16_thunk() { assert( FALSE ); }
  82
  83 DWORD WINAPI CALL32_CBClient( FARPROC proc, LPWORD args, DWORD *esi )
  84 { assert( FALSE ); }
  85
  86 DWORD WINAPI CALL32_CBClientEx( FARPROC proc, LPWORD args, DWORD *esi, INT *nArgs )
  87 { assert( FALSE ); }
  88 #endif
  89
  90
  91 /* from relay32/relay386.c */
  92 extern char **debug_relay_excludelist,**debug_relay_includelist;
  93
  94 /***********************************************************************
  95  *           RELAY_DebugCallFrom16
  96  */
  97 void RELAY_DebugCallFrom16( CONTEXT86 *context )
  98 {
  99     STACK16FRAME *frame;
 100     WORD ordinal;
 101     char *args16, funstr[80];
 102     const char *args;
 103     int i, usecdecl, reg_func;
 104
 105     if (!TRACE_ON(relay)) return;
 106
 107     frame = CURRENT_STACK16;
 108     args = BUILTIN_GetEntryPoint16( frame, funstr, &ordinal );
 109     if (!args) return; /* happens for the two snoop register relays */
 110     if (!RELAY_ShowDebugmsgRelay(funstr)) return;
 111     DPRINTF( "Call %s(",funstr);
 112     VA_START16( args16 );
 113
 114     usecdecl = ( *args == 'c' );
 115     args += 2;
 116     reg_func = (    memcmp( args, "regs_", 5 ) == 0
 117                  || memcmp( args, "intr_", 5 ) == 0 );
 118     args += 5;
 119
 120     if (usecdecl)
 121     {
 122         while (*args)
 123         {
 124             switch(*args)
 125             {
 126             case 'w':
 127             case 's':
 128                 DPRINTF( "0x%04x", *(WORD *)args16 );
 129                 args16 += 2;
 130                 break;
 131             case 'l':
 132                 DPRINTF( "0x%08x", *(int *)args16 );
 133                 args16 += 4;
 134                 break;
 135             case 'p':
 136                 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
 137                 args16 += 4;
 138                 break;
 139             case 't':
 140             case 'T':
 141                 DPRINTF( "%04x:%04x %s", *(WORD *)(args16+2), *(WORD *)args16,
 142                          debugres_a( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 )) );
 143                 args16 += 4;
 144                 break;
 145             }
 146             args++;
 147             if (*args) DPRINTF( "," );
 148         }
 149     }
 150     else  /* not cdecl */
 151     {
 152         /* Start with the last arg */
 153         for (i = 0; args[i]; i++)
 154         {
 155             switch(args[i])
 156             {
 157             case 'w':
 158             case 's':
 159                 args16 += 2;
 160                 break;
 161             case 'l':
 162             case 'p':
 163             case 't':
 164             case 'T':
 165                 args16 += 4;
 166                 break;
 167             }
 168         }
 169
 170         while (*args)
 171         {
 172             switch(*args)
 173             {
 174             case 'w':
 175             case 's':
 176                 args16 -= 2;
 177                 DPRINTF( "0x%04x", *(WORD *)args16 );
 178                 break;
 179             case 'l':
 180                 args16 -= 4;
 181                 DPRINTF( "0x%08x", *(int *)args16 );
 182                 break;
 183             case 't':
 184                 args16 -= 4;
 185                 DPRINTF( "0x%08x %s", *(int *)args16,
 186                          debugres_a( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 )));
 187                 break;
 188             case 'p':
 189                 args16 -= 4;
 190                 DPRINTF( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 );
 191                 break;
 192             case 'T':
 193                 args16 -= 4;
 194                 DPRINTF( "%04x:%04x %s", *(WORD *)(args16+2), *(WORD *)args16,
 195                          debugres_a( (LPSTR)PTR_SEG_TO_LIN(*(SEGPTR *)args16 )));
 196                 break;
 197             }
 198             args++;
 199             if (*args) DPRINTF( "," );
 200         }
 201     }
 202
 203     DPRINTF( ") ret=%04x:%04x ds=%04x\n", frame->cs, frame->ip, frame->ds );
 204     VA_END16( args16 );
 205
 206     if (reg_func)
 207         DPRINTF("     AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n",
 208                 AX_reg(context), BX_reg(context), CX_reg(context),
 209                 DX_reg(context), SI_reg(context), DI_reg(context),
 210                 (WORD)context->SegEs, context->EFlags );
 211
 212     SYSLEVEL_CheckNotLevel( 2 );
 213 }
 214
 215
 216 /***********************************************************************
 217  *           RELAY_DebugCallFrom16Ret
 218  */
 219 void RELAY_DebugCallFrom16Ret( CONTEXT86 *context, int ret_val )
 220 {
 221     STACK16FRAME *frame;
 222     WORD ordinal;
 223     char funstr[80];
 224     const char *args;
 225
 226     if (!TRACE_ON(relay)) return;
 227     frame = CURRENT_STACK16;
 228     args = BUILTIN_GetEntryPoint16( frame, funstr, &ordinal );
 229     if (!args) return;
 230     if (!RELAY_ShowDebugmsgRelay(funstr)) return;
 231     DPRINTF( "Ret  %s() ",funstr);
 232
 233     if ( memcmp( args+2, "long_", 5 ) == 0 )
 234     {
 235         DPRINTF( "retval=0x%08x ret=%04x:%04x ds=%04x\n",
 236                  ret_val, frame->cs, frame->ip, frame->ds );
 237     }
 238     else if ( memcmp( args+2, "word_", 5 ) == 0 )
 239     {
 240         DPRINTF( "retval=0x%04x ret=%04x:%04x ds=%04x\n",
 241                  ret_val & 0xffff, frame->cs, frame->ip, frame->ds );
 242     }
 243     else if (    memcmp( args+2, "regs_", 5 ) == 0
 244               || memcmp( args+2, "intr_", 5 ) == 0 )
 245     {
 246         DPRINTF("retval=none ret=%04x:%04x ds=%04x\n",
 247                 (WORD)context->SegCs, LOWORD(context->Eip), (WORD)context->SegDs);
 248         DPRINTF("     AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n",
 249                 AX_reg(context), BX_reg(context), CX_reg(context),
 250                 DX_reg(context), SI_reg(context), DI_reg(context),
 251                 (WORD)context->SegEs, context->EFlags );
 252     }
 253
 254     SYSLEVEL_CheckNotLevel( 2 );
 255 }
 256
 257
 258 /***********************************************************************
 259  *           RELAY_DebugCallTo16
 260  *
 261  * 'target' contains either the function to call (normal CallTo16)
 262  * or a pointer to the CONTEXT86 struct (register CallTo16).
 263  * 'nb_args' is the number of argument bytes on the 16-bit stack;
 264  * 'reg_func' specifies whether we have a register CallTo16 or not.
 265  */
 266 void RELAY_DebugCallTo16( LPVOID target, int nb_args, BOOL reg_func )
 267 {
 268     WORD *stack16;
 269     TEB *teb;
 270
 271     if (!TRACE_ON(relay)) return;
 272     teb = NtCurrentTeb();
 273     stack16 = (WORD *)THREAD_STACK16(teb);
 274
 275     nb_args /= sizeof(WORD);
 276
 277     if ( reg_func )
 278     {
 279         CONTEXT86 *context = (CONTEXT86 *)target;
 280
 281         DPRINTF("CallTo16(func=%04lx:%04x,ds=%04lx",
 282                 context->SegCs, LOWORD(context->Eip), context->SegDs );
 283         while (nb_args--) DPRINTF( ",0x%04x", *--stack16 );
 284         DPRINTF(") ss:sp=%04x:%04x\n", SELECTOROF(teb->cur_stack),
 285                 OFFSETOF(teb->cur_stack) );
 286         DPRINTF("     AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x BP=%04x ES=%04x FS=%04x\n",
 287                 AX_reg(context), BX_reg(context), CX_reg(context),
 288                 DX_reg(context), SI_reg(context), DI_reg(context),
 289                 BP_reg(context), (WORD)context->SegEs, (WORD)context->SegFs );
 290     }
 291     else
 292     {
 293         DPRINTF("CallTo16(func=%04x:%04x,ds=%04x",
 294                 HIWORD(target), LOWORD(target), SELECTOROF(teb->cur_stack) );
 295         while (nb_args--) DPRINTF( ",0x%04x", *--stack16 );
 296         DPRINTF(") ss:sp=%04x:%04x\n", SELECTOROF(teb->cur_stack),
 297                 OFFSETOF(teb->cur_stack) );
 298     }
 299
 300     SYSLEVEL_CheckNotLevel( 2 );
 301 }
 302
 303
 304 /***********************************************************************
 305  *           RELAY_DebugCallTo16Ret
 306  */
 307 void RELAY_DebugCallTo16Ret( BOOL reg_func, int ret_val )
 308 {
 309     if (!TRACE_ON(relay)) return;
 310
 311     if (!reg_func)
 312     {
 313         DPRINTF("CallTo16() ss:sp=%04x:%04x retval=0x%08x\n",
 314                 SELECTOROF(NtCurrentTeb()->cur_stack),
 315                 OFFSETOF(NtCurrentTeb()->cur_stack), ret_val);
 316     }
 317     else
 318     {
 319         CONTEXT86 *context = (CONTEXT86 *)ret_val;
 320
 321         DPRINTF("CallTo16() ss:sp=%04x:%04x\n",
 322                 SELECTOROF(NtCurrentTeb()->cur_stack),
 323                 OFFSETOF(NtCurrentTeb()->cur_stack));
 324         DPRINTF("     AX=%04x BX=%04x CX=%04x DX=%04x BP=%04x SP=%04x\n",
 325                 AX_reg(context), BX_reg(context), CX_reg(context),
 326                 DX_reg(context), BP_reg(context), LOWORD(context->Esp));
 327     }
 328
 329     SYSLEVEL_CheckNotLevel( 2 );
 330 }