debugger/dbg.y

   1 %{
   2 /*
   3  * Parser for command lines in the Wine debugger
   4  *
   5  * Copyright 1993 Eric Youngdale
   6  * Copyright 1995 Morten Welinder
   7  */
   8
   9 #include "config.h"
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <signal.h>
  15 #include <sys/stat.h>
  16 #include <unistd.h>
  17 #ifdef HAVE_ALLOCA_H
  18 #include <alloca.h>
  19 #endif
  20
  21 #include "winbase.h"
  22 #include "module.h"
  23 #include "task.h"
  24 #include "options.h"
  25 #include "queue.h"
  26 #include "wine/winbase16.h"
  27 #include "winnt.h"
  28 #include "x11drv.h"
  29 #include "win.h"
  30 #include "debugger.h"
  31 #include "neexe.h"
  32 #include "process.h"
  33 #include "server.h"
  34 #include "main.h"
  35 #include "expr.h"
  36 #include "user.h"
  37
  38 extern FILE * yyin;
  39 unsigned int dbg_mode = 0;
  40 HANDLE dbg_heap = 0;
  41 int curr_frame = 0;
  42
  43 static enum exec_mode dbg_exec_mode = EXEC_CONT;
  44 static int dbg_exec_count = 0;
  45
  46 void issue_prompt(void);
  47 void mode_command(int);
  48 void flush_symbols(void);
  49 int yylex(void);
  50 int yyerror(char *);
  51
  52 #ifdef DBG_need_heap
  53 #define malloc(x) DBG_alloc(x)
  54 #define realloc(x,y) DBG_realloc(x,y)
  55 #define free(x) DBG_free(x)
  56 #endif
  57
  58 extern void VIRTUAL_Dump(void);  /* memory/virtual.c */
  59
  60 %}
  61
  62 %union
  63 {
  64     DBG_ADDR         address;
  65     enum debug_regs  reg;
  66     char *           string;
  67     int              integer;
  68     struct list_id   listing;
  69     struct expr *    expression;
  70     struct datatype * type;
  71 }
  72
  73 %token tCONT tPASS tSTEP tLIST tNEXT tQUIT tHELP tBACKTRACE tINFO tWALK tUP tDOWN
  74 %token tENABLE tDISABLE tBREAK tDELETE tSET tMODE tPRINT tEXAM tABORT tDEBUGMSG
  75 %token tCLASS tMAPS tMODULE tSTACK tSEGMENTS tREGS tWND tQUEUE tLOCAL
  76 %token tPROCESS tMODREF
  77 %token tEOL tSTRING tDEBUGSTR
  78 %token tFRAME tSHARE tCOND tDISPLAY tUNDISPLAY tDISASSEMBLE
  79 %token tSTEPI tNEXTI tFINISH tSHOW tDIR
  80 %token <string> tPATH
  81 %token <string> tIDENTIFIER tSTRING tDEBUGSTR
  82 %token <integer> tNUM tFORMAT
  83 %token <reg> tREG
  84 %token tSYMBOLFILE
  85
  86 %token tCHAR tSHORT tINT tLONG tFLOAT tDOUBLE tUNSIGNED tSIGNED
  87 %token tSTRUCT tUNION tENUM
  88
  89 /* %left ',' */
  90 /* %left '=' OP_OR_EQUAL OP_XOR_EQUAL OP_AND_EQUAL OP_SHL_EQUAL \
  91          OP_SHR_EQUAL OP_PLUS_EQUAL OP_MINUS_EQUAL \
  92          OP_TIMES_EQUAL OP_DIVIDE_EQUAL OP_MODULO_EQUAL */
  93 /* %left OP_COND */ /* ... ? ... : ... */
  94 %left OP_LOR
  95 %left OP_LAND
  96 %left '|'
  97 %left '^'
  98 %left '&'
  99 %left OP_EQ OP_NE
 100 %left '<' '>' OP_LE OP_GE
 101 %left OP_SHL OP_SHR
 102 %left '+' '-'
 103 %left '*' '/' '%'
 104 %left OP_SIGN '!' '~' OP_DEREF /* OP_INC OP_DEC OP_ADDR */
 105 %left '.' '[' OP_DRF
 106 %nonassoc ':'
 107
 108 %type <expression> expr lval lvalue
 109 %type <type> type_cast type_expr
 110 %type <address> expr_addr lval_addr
 111 %type <integer> expr_value
 112 %type <string> pathname
 113
 114 %type <listing> list_arg
 115
 116 %%
 117
 118 input: line                    { issue_prompt(); }
 119     | input line               { issue_prompt(); }
 120
 121 line: command
 122     | tEOL
 123     | error tEOL               { yyerrok; }
 124
 125 command:
 126       tQUIT tEOL               { exit(0); }
 127     | tHELP tEOL               { DEBUG_Help(); }
 128     | tHELP tINFO tEOL         { DEBUG_HelpInfo(); }
 129     | tCONT tEOL               { dbg_exec_count = 1;
 130                                  dbg_exec_mode = EXEC_CONT; return 0; }
 131     | tPASS tEOL               { dbg_exec_count = 1;
 132                                  dbg_exec_mode = EXEC_PASS; return 0; }
 133     | tCONT tNUM tEOL          { dbg_exec_count = $2;
 134                                  dbg_exec_mode = EXEC_CONT; return 0; }
 135     | tSTEP tEOL               { dbg_exec_count = 1;
 136                                  dbg_exec_mode = EXEC_STEP_INSTR; return 0; }
 137     | tNEXT tEOL               { dbg_exec_count = 1;
 138                                  dbg_exec_mode = EXEC_STEP_OVER; return 0; }
 139     | tSTEP tNUM tEOL          { dbg_exec_count = $2;
 140                                  dbg_exec_mode = EXEC_STEP_INSTR; return 0; }
 141     | tNEXT tNUM tEOL          { dbg_exec_count = $2;
 142                                  dbg_exec_mode = EXEC_STEP_OVER; return 0; }
 143     | tSTEPI tEOL              { dbg_exec_count = 1;
 144                                  dbg_exec_mode = EXEC_STEPI_INSTR; return 0; }
 145     | tNEXTI tEOL              { dbg_exec_count = 1;
 146                                  dbg_exec_mode = EXEC_STEPI_OVER; return 0; }
 147     | tSTEPI tNUM tEOL         { dbg_exec_count = $2;
 148                                  dbg_exec_mode = EXEC_STEPI_INSTR; return 0; }
 149     | tNEXTI tNUM tEOL         { dbg_exec_count = $2;
 150                                  dbg_exec_mode = EXEC_STEPI_OVER; return 0; }
 151     | tABORT tEOL              { kill(getpid(), SIGABRT); }
 152     | tMODE tNUM tEOL          { mode_command($2); }
 153     | tENABLE tNUM tEOL        { DEBUG_EnableBreakpoint( $2, TRUE ); }
 154     | tDISABLE tNUM tEOL       { DEBUG_EnableBreakpoint( $2, FALSE ); }
 155     | tDELETE tBREAK tNUM tEOL { DEBUG_DelBreakpoint( $3 ); }
 156     | tBACKTRACE tEOL          { DEBUG_BackTrace(); }
 157     | tUP tEOL                 { DEBUG_SetFrame( curr_frame + 1 );  }
 158     | tUP tNUM tEOL            { DEBUG_SetFrame( curr_frame + $2 ); }
 159     | tDOWN tEOL               { DEBUG_SetFrame( curr_frame - 1 );  }
 160     | tDOWN tNUM tEOL          { DEBUG_SetFrame( curr_frame - $2 ); }
 161     | tFRAME tNUM tEOL         { DEBUG_SetFrame( $2 ); }
 162     | tFINISH tEOL             { dbg_exec_count = 0;
 163                                  dbg_exec_mode = EXEC_FINISH; return 0; }
 164     | tSHOW tDIR tEOL          { DEBUG_ShowDir(); }
 165     | tDIR pathname tEOL       { DEBUG_AddPath( $2 ); }
 166     | tDIR tEOL                { DEBUG_NukePath(); }
 167     | tDISPLAY tEOL            { DEBUG_InfoDisplay(); }
 168     | tDISPLAY expr tEOL       { DEBUG_AddDisplay($2, 1, 0); }
 169     | tDISPLAY tFORMAT expr tEOL { DEBUG_AddDisplay($3, $2 >> 8, $2 & 0xff); }
 170     | tDELETE tDISPLAY tNUM tEOL { DEBUG_DelDisplay( $3 ); }
 171     | tDELETE tDISPLAY tEOL    { DEBUG_DelDisplay( -1 ); }
 172     | tUNDISPLAY tNUM tEOL     { DEBUG_DelDisplay( $2 ); }
 173     | tUNDISPLAY tEOL          { DEBUG_DelDisplay( -1 ); }
 174     | tCOND tNUM tEOL          { DEBUG_AddBPCondition($2, NULL); }
 175     | tCOND tNUM expr tEOL     { DEBUG_AddBPCondition($2, $3); }
 176     | tDEBUGMSG tDEBUGSTR tEOL { MAIN_ParseDebugOptions($2); }
 177     | tSYMBOLFILE pathname tEOL{ DEBUG_ReadSymbolTable($2); }
 178     | list_command
 179     | disassemble_command
 180     | set_command
 181     | x_command
 182     | print_command
 183     | break_command
 184     | info_command
 185     | walk_command
 186
 187 set_command:
 188       tSET tREG '=' expr_value tEOL        { DEBUG_SetRegister( $2, $4 );
 189                                              DEBUG_FreeExprMem(); }
 190     | tSET lval_addr '=' expr_value tEOL   { DEBUG_WriteMemory( &$2, $4 );
 191                                              DEBUG_FreeExprMem(); }
 192
 193 pathname:
 194       tIDENTIFIER                    { $$ = $1; }
 195     | tPATH                          { $$ = $1; }
 196
 197 disassemble_command:
 198       tDISASSEMBLE tEOL              { DEBUG_Disassemble( NULL, NULL, 10 ); }
 199     | tDISASSEMBLE expr_addr tEOL    { DEBUG_Disassemble( & $2, NULL, 10 ); }
 200     | tDISASSEMBLE expr_addr ',' expr_addr tEOL { DEBUG_Disassemble( & $2, & $4, 0 ); }
 201
 202 list_command:
 203       tLIST tEOL               { DEBUG_List( NULL, NULL, 10 ); }
 204     | tLIST '-' tEOL           { DEBUG_List( NULL, NULL, -10 ); }
 205     | tLIST list_arg tEOL      { DEBUG_List( & $2, NULL, 10 ); }
 206     | tLIST ',' list_arg tEOL  { DEBUG_List( NULL, & $3, -10 ); }
 207     | tLIST list_arg ',' list_arg tEOL { DEBUG_List( & $2, & $4, 0 ); }
 208
 209 list_arg:
 210       tNUM                     { $$.sourcefile = NULL; $$.line = $1; }
 211     | pathname ':' tNUM        { $$.sourcefile = $1; $$.line = $3; }
 212     | tIDENTIFIER              { DEBUG_GetFuncInfo( & $$, NULL, $1); }
 213     | pathname ':' tIDENTIFIER { DEBUG_GetFuncInfo( & $$, $1, $3); }
 214     | '*' expr_addr            { DEBUG_FindNearestSymbol( & $2, FALSE, NULL,
 215                                                         0, & $$ );
 216                                              DEBUG_FreeExprMem(); }
 217
 218 x_command:
 219       tEXAM expr_addr tEOL     { DEBUG_ExamineMemory( &$2, 1, 'x');
 220                                              DEBUG_FreeExprMem(); }
 221     | tEXAM tFORMAT expr_addr tEOL  { DEBUG_ExamineMemory( &$3, $2>>8, $2&0xff );
 222                                              DEBUG_FreeExprMem(); }
 223
 224 print_command:
 225       tPRINT expr_addr tEOL    { DEBUG_Print( &$2, 1, 0, 0 );
 226                                              DEBUG_FreeExprMem(); }
 227     | tPRINT tFORMAT expr_addr tEOL { DEBUG_Print( &$3, $2 >> 8, $2 & 0xff, 0 );
 228                                              DEBUG_FreeExprMem(); }
 229
 230 break_command:
 231       tBREAK '*' expr_addr tEOL { DEBUG_AddBreakpoint( &$3 );
 232                                              DEBUG_FreeExprMem(); }
 233     | tBREAK tIDENTIFIER tEOL  { DBG_ADDR addr;
 234                                  if( DEBUG_GetSymbolValue($2, -1, &addr, TRUE) )
 235                                    {
 236                                      DEBUG_AddBreakpoint( &addr );
 237                                    }
 238                                  else
 239                                    {
 240                                      fprintf(stderr,"Unable to add breakpoint\n");
 241                                    }
 242                                 }
 243     | tBREAK tIDENTIFIER ':' tNUM tEOL  { DBG_ADDR addr;
 244                                  if( DEBUG_GetSymbolValue($2, $4, &addr, TRUE) )
 245                                    {
 246                                      DEBUG_AddBreakpoint( &addr );
 247                                    }
 248                                  else
 249                                    {
 250                                      fprintf(stderr,"Unable to add breakpoint\n");
 251                                    }
 252                                 }
 253     | tBREAK tNUM tEOL         { struct name_hash *nh;
 254                                  DBG_ADDR addr;
 255                                  TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 256
 257                                  addr.type = NULL;
 258                                  addr.seg = CS_reg(&DEBUG_context);
 259                                  addr.off = EIP_reg(&DEBUG_context);
 260
 261                                  if (ISV86(&DEBUG_context))
 262                                      addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 263                                  DBG_FIX_ADDR_SEG( &addr, CS_reg(&DEBUG_context) );
 264                                  GlobalUnlock16( GetCurrentTask() );
 265                                  DEBUG_FindNearestSymbol(&addr, TRUE,
 266                                                          &nh, 0, NULL);
 267                                  if( nh != NULL )
 268                                    {
 269                                      DEBUG_GetLineNumberAddr(nh,
 270                                                       $2, &addr, TRUE);
 271                                      DEBUG_AddBreakpoint( &addr );
 272                                    }
 273                                  else
 274                                    {
 275                                      fprintf(stderr,"Unable to add breakpoint\n");
 276                                    }
 277                                }
 278
 279     | tBREAK tEOL              { DBG_ADDR addr;
 280                                  TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 281
 282                                  addr.type = NULL;
 283                                  addr.seg = CS_reg(&DEBUG_context);
 284                                  addr.off = EIP_reg(&DEBUG_context);
 285
 286                                  if (ISV86(&DEBUG_context))
 287                                      addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 288                                  GlobalUnlock16( GetCurrentTask() );
 289                                  DEBUG_AddBreakpoint( &addr );
 290                                }
 291
 292 info_command:
 293       tINFO tBREAK tEOL         { DEBUG_InfoBreakpoints(); }
 294     | tINFO tCLASS expr_value tEOL    { CLASS_DumpClass( (struct tagCLASS *)$3 );
 295                                              DEBUG_FreeExprMem(); }
 296     | tINFO tSHARE tEOL         { DEBUG_InfoShare(); }
 297     | tINFO tMODULE expr_value tEOL   { NE_DumpModule( $3 );
 298                                              DEBUG_FreeExprMem(); }
 299     | tINFO tQUEUE expr_value tEOL    { QUEUE_DumpQueue( $3 );
 300                                              DEBUG_FreeExprMem(); }
 301     | tINFO tREGS tEOL          { DEBUG_InfoRegisters(); }
 302     | tINFO tSEGMENTS expr_value tEOL { LDT_Print( SELECTOR_TO_ENTRY($3), 1 );
 303                                              DEBUG_FreeExprMem(); }
 304     | tINFO tSEGMENTS tEOL      { LDT_Print( 0, -1 ); }
 305     | tINFO tSTACK tEOL         { DEBUG_InfoStack(); }
 306     | tINFO tMAPS tEOL          { VIRTUAL_Dump(); }
 307     | tINFO tWND expr_value tEOL      { WIN_DumpWindow( $3 );
 308                                              DEBUG_FreeExprMem(); }
 309     | tINFO tLOCAL tEOL         { DEBUG_InfoLocals(); }
 310     | tINFO tDISPLAY tEOL       { DEBUG_InfoDisplay(); }
 311
 312 walk_command:
 313       tWALK tCLASS tEOL         { CLASS_WalkClasses(); }
 314     | tWALK tMODULE tEOL        { NE_WalkModules(); }
 315     | tWALK tQUEUE tEOL         { QUEUE_WalkQueues(); }
 316     | tWALK tWND tEOL           { WIN_WalkWindows( 0, 0 ); }
 317     | tWALK tWND tNUM tEOL      { WIN_WalkWindows( $3, 0 ); }
 318     | tWALK tPROCESS tEOL       { PROCESS_WalkProcess(); }
 319     | tWALK tMODREF expr_value tEOL   { MODULE_WalkModref( $3 ); }
 320
 321
 322 type_cast:
 323       '(' type_expr ')'         { $$ = $2; }
 324
 325 type_expr:
 326       type_expr '*'             { $$ = DEBUG_FindOrMakePointerType($1); }
 327     |  tINT                     { $$ = DEBUG_TypeCast(DT_BASIC, "int"); }
 328     | tCHAR                     { $$ = DEBUG_TypeCast(DT_BASIC, "char"); }
 329     | tLONG tINT                { $$ = DEBUG_TypeCast(DT_BASIC, "long int"); }
 330     | tUNSIGNED tINT            { $$ = DEBUG_TypeCast(DT_BASIC, "unsigned int"); }
 331     | tLONG tUNSIGNED tINT      { $$ = DEBUG_TypeCast(DT_BASIC, "long unsigned int"); }
 332     | tLONG tLONG tINT          { $$ = DEBUG_TypeCast(DT_BASIC, "long long int"); }
 333     | tLONG tLONG tUNSIGNED tINT { $$ = DEBUG_TypeCast(DT_BASIC, "long long unsigned int"); }
 334     | tSHORT tINT               { $$ = DEBUG_TypeCast(DT_BASIC, "short int"); }
 335     | tSHORT tUNSIGNED tINT     { $$ = DEBUG_TypeCast(DT_BASIC, "short unsigned int"); }
 336     | tSIGNED tCHAR             { $$ = DEBUG_TypeCast(DT_BASIC, "signed char"); }
 337     | tUNSIGNED tCHAR           { $$ = DEBUG_TypeCast(DT_BASIC, "unsigned char"); }
 338     | tFLOAT                    { $$ = DEBUG_TypeCast(DT_BASIC, "float"); }
 339     | tDOUBLE                   { $$ = DEBUG_TypeCast(DT_BASIC, "double"); }
 340     | tLONG tDOUBLE             { $$ = DEBUG_TypeCast(DT_BASIC, "long double"); }
 341     | tSTRUCT tIDENTIFIER       { $$ = DEBUG_TypeCast(DT_STRUCT, $2); }
 342     | tUNION tIDENTIFIER        { $$ = DEBUG_TypeCast(DT_STRUCT, $2); }
 343     | tENUM tIDENTIFIER         { $$ = DEBUG_TypeCast(DT_ENUM, $2); }
 344
 345 expr_addr:
 346     expr                         { $$ = DEBUG_EvalExpr($1); }
 347
 348 expr_value:
 349       expr        { DBG_ADDR addr  = DEBUG_EvalExpr($1);
 350                     $$ = addr.off ? *(unsigned int *) addr.off : 0; }
 351 /*
 352  * The expr rule builds an expression tree.  When we are done, we call
 353  * EvalExpr to evaluate the value of the expression.  The advantage of
 354  * the two-step approach is that it is possible to save expressions for
 355  * use in 'display' commands, and in conditional watchpoints.
 356  */
 357 expr:
 358       tNUM                       { $$ = DEBUG_ConstExpr($1); }
 359     | tSTRING                    { $$ = DEBUG_StringExpr($1); }
 360     | tREG                       { $$ = DEBUG_RegisterExpr($1); }
 361     | tIDENTIFIER                { $$ = DEBUG_SymbolExpr($1); }
 362     | expr OP_DRF tIDENTIFIER    { $$ = DEBUG_StructPExpr($1, $3); }
 363     | expr '.' tIDENTIFIER       { $$ = DEBUG_StructExpr($1, $3); }
 364     | tIDENTIFIER '(' ')'        { $$ = DEBUG_CallExpr($1, 0); }
 365     | tIDENTIFIER '(' expr ')'   { $$ = DEBUG_CallExpr($1, 1, $3); }
 366     | tIDENTIFIER '(' expr ',' expr ')'  { $$ = DEBUG_CallExpr($1, 2, $3,
 367                                                                $5); }
 368     | tIDENTIFIER '(' expr ',' expr ',' expr ')'         { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7); }
 369     | tIDENTIFIER '(' expr ',' expr ',' expr ',' expr ')'        { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7, $9); }
 370     | tIDENTIFIER '(' expr ',' expr ',' expr ',' expr ',' expr ')'       { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7, $9, $11); }
 371     | expr '[' expr ']'          { $$ = DEBUG_BinopExpr(EXP_OP_ARR, $1, $3); }
 372     | expr ':' expr              { $$ = DEBUG_BinopExpr(EXP_OP_SEG, $1, $3); }
 373     | expr OP_LOR expr           { $$ = DEBUG_BinopExpr(EXP_OP_LOR, $1, $3); }
 374     | expr OP_LAND expr          { $$ = DEBUG_BinopExpr(EXP_OP_LAND, $1, $3); }
 375     | expr '|' expr              { $$ = DEBUG_BinopExpr(EXP_OP_OR, $1, $3); }
 376     | expr '&' expr              { $$ = DEBUG_BinopExpr(EXP_OP_AND, $1, $3); }
 377     | expr '^' expr              { $$ = DEBUG_BinopExpr(EXP_OP_XOR, $1, $3); }
 378     | expr OP_EQ expr            { $$ = DEBUG_BinopExpr(EXP_OP_EQ, $1, $3); }
 379     | expr '>' expr              { $$ = DEBUG_BinopExpr(EXP_OP_GT, $1, $3); }
 380     | expr '<' expr              { $$ = DEBUG_BinopExpr(EXP_OP_LT, $1, $3); }
 381     | expr OP_GE expr            { $$ = DEBUG_BinopExpr(EXP_OP_GE, $1, $3); }
 382     | expr OP_LE expr            { $$ = DEBUG_BinopExpr(EXP_OP_LE, $1, $3); }
 383     | expr OP_NE expr            { $$ = DEBUG_BinopExpr(EXP_OP_NE, $1, $3); }
 384     | expr OP_SHL expr           { $$ = DEBUG_BinopExpr(EXP_OP_SHL, $1, $3); }
 385     | expr OP_SHR expr           { $$ = DEBUG_BinopExpr(EXP_OP_SHR, $1, $3); }
 386     | expr '+' expr              { $$ = DEBUG_BinopExpr(EXP_OP_ADD, $1, $3); }
 387     | expr '-' expr              { $$ = DEBUG_BinopExpr(EXP_OP_SUB, $1, $3); }
 388     | expr '*' expr              { $$ = DEBUG_BinopExpr(EXP_OP_MUL, $1, $3); }
 389     | expr '/' expr              { $$ = DEBUG_BinopExpr(EXP_OP_DIV, $1, $3); }
 390     | expr '%' expr              { $$ = DEBUG_BinopExpr(EXP_OP_REM, $1, $3); }
 391     | '-' expr %prec OP_SIGN     { $$ = DEBUG_UnopExpr(EXP_OP_NEG, $2); }
 392     | '+' expr %prec OP_SIGN     { $$ = $2; }
 393     | '!' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_NOT, $2); }
 394     | '~' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_LNOT, $2); }
 395     | '(' expr ')'               { $$ = $2; }
 396     | '*' expr %prec OP_DEREF    { $$ = DEBUG_UnopExpr(EXP_OP_DEREF, $2); }
 397     | '&' expr %prec OP_DEREF    { $$ = DEBUG_UnopExpr(EXP_OP_ADDR, $2); }
 398     | type_cast expr %prec OP_DEREF { $$ = DEBUG_TypeCastExpr($1, $2); }
 399
 400 /*
 401  * The lvalue rule builds an expression tree.  This is a limited form
 402  * of expression that is suitable to be used as an lvalue.
 403  */
 404 lval_addr:
 405     lval                         { $$ = DEBUG_EvalExpr($1); }
 406
 407 lval:
 408       lvalue                     { $$ = $1; }
 409     | '*' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_FORCE_DEREF, $2); }
 410
 411 lvalue:
 412       tNUM                       { $$ = DEBUG_ConstExpr($1); }
 413     | tREG                       { $$ = DEBUG_RegisterExpr($1); }
 414     | tIDENTIFIER                { $$ = DEBUG_SymbolExpr($1); }
 415     | lvalue OP_DRF tIDENTIFIER  { $$ = DEBUG_StructPExpr($1, $3); }
 416     | lvalue '.' tIDENTIFIER     { $$ = DEBUG_StructExpr($1, $3); }
 417     | lvalue '[' expr ']'        { $$ = DEBUG_BinopExpr(EXP_OP_ARR, $1, $3); }
 418
 419 %%
 420
 421 void
 422 issue_prompt(){
 423 #ifdef DONT_USE_READLINE
 424         fprintf(stderr,"Wine-dbg>");
 425 #endif
 426 }
 427
 428 void mode_command(int newmode)
 429 {
 430     if ((newmode == 16) || (newmode == 32)) dbg_mode = newmode;
 431     else fprintf(stderr,"Invalid mode (use 16 or 32)\n");
 432 }
 433
 434
 435 /***********************************************************************
 436  *           DEBUG_Main
 437  *
 438  * Debugger main loop.
 439  */
 440 static void DEBUG_Main( BOOL is_debug )
 441 {
 442     static int loaded_symbols = 0;
 443     static BOOL frozen = FALSE;
 444     static BOOL in_debugger = FALSE;
 445     char SymbolTableFile[256];
 446     int newmode;
 447     BOOL ret_ok;
 448 #ifdef YYDEBUG
 449     yydebug = 0;
 450 #endif
 451
 452     if (in_debugger)
 453     {
 454         fprintf( stderr, " inside debugger, exiting.\n" );
 455         exit(1);
 456     }
 457     in_debugger = TRUE;
 458     yyin = stdin;
 459
 460     DEBUG_SetBreakpoints( FALSE );
 461
 462     if (!is_debug)
 463     {
 464         if (IS_SELECTOR_SYSTEM(CS_reg(&DEBUG_context)))
 465             fprintf( stderr, " in 32-bit code (0x%08lx).\n", EIP_reg(&DEBUG_context));
 466         else
 467             fprintf( stderr, " in 16-bit code (%04x:%04lx).\n",
 468                      (WORD)CS_reg(&DEBUG_context), EIP_reg(&DEBUG_context) );
 469     }
 470
 471     if (!loaded_symbols)
 472     {
 473         loaded_symbols++;
 474
 475         if ( !frozen )
 476         {
 477             /* Don't freeze thread currently holding the X crst! */
 478             EnterCriticalSection( &X11DRV_CritSection );
 479             CLIENT_DebuggerRequest( DEBUGGER_FREEZE_ALL );
 480             LeaveCriticalSection( &X11DRV_CritSection );
 481             frozen = TRUE;
 482         }
 483
 484 #ifdef DBG_need_heap
 485         /*
 486          * Initialize the debugger heap.
 487          */
 488         dbg_heap = HeapCreate(HEAP_NO_SERIALIZE, 0x1000, 0x8000000); /* 128MB */
 489 #endif
 490
 491         /*
 492          * Initialize the type handling stuff.
 493          */
 494         DEBUG_InitTypes();
 495
 496         /*
 497          * In some cases we can read the stabs information directly
 498          * from the executable.  If this is the case, we don't need
 499          * to bother with trying to read a symbol file, as the stabs
 500          * also have line number and local variable information.
 501          * As long as gcc is used for the compiler, stabs will
 502          * be the default.  On SVr4, DWARF could be used, but we
 503          * don't grok that yet, and in this case we fall back to using
 504          * the wine.sym file.
 505          */
 506         if( DEBUG_ReadExecutableDbgInfo() == FALSE )
 507         {
 508             char *symfilename = "wine.sym";
 509             struct stat statbuf;
 510             if (-1 == stat(symfilename, &statbuf) )
 511                 symfilename = LIBDIR "wine.sym";
 512
 513             PROFILE_GetWineIniString( "wine", "SymbolTableFile", symfilename,
 514                                      SymbolTableFile, sizeof(SymbolTableFile));
 515             DEBUG_ReadSymbolTable( SymbolTableFile );
 516         }
 517
 518         DEBUG_LoadEntryPoints();
 519         DEBUG_ProcessDeferredDebug();
 520     }
 521
 522 #if 0
 523     fprintf(stderr, "Entering debugger  PC=%x, mode=%d, count=%d\n",
 524             EIP_reg(&DEBUG_context),
 525             dbg_exec_mode, dbg_exec_count);
 526
 527     sleep(1);
 528 #endif
 529
 530     if (!is_debug || !DEBUG_ShouldContinue( dbg_exec_mode, &dbg_exec_count ))
 531     {
 532         DBG_ADDR addr;
 533         TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 534
 535         addr.seg = CS_reg(&DEBUG_context);
 536         addr.off = EIP_reg(&DEBUG_context);
 537         if (ISV86(&DEBUG_context)) addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 538         addr.type = NULL;
 539         DBG_FIX_ADDR_SEG( &addr, 0 );
 540
 541         GlobalUnlock16( GetCurrentTask() );
 542
 543         if ( !frozen )
 544         {
 545             /* Don't freeze thread currently holding the X crst! */
 546             EnterCriticalSection( &X11DRV_CritSection );
 547             CLIENT_DebuggerRequest( DEBUGGER_FREEZE_ALL );
 548             LeaveCriticalSection( &X11DRV_CritSection );
 549             frozen = TRUE;
 550         }
 551
 552         /* Put the display in a correct state */
 553         USER_Driver->pBeginDebugging();
 554
 555         newmode = ISV86(&DEBUG_context) ? 16 : IS_SELECTOR_32BIT(addr.seg) ? 32 : 16;
 556         if (newmode != dbg_mode)
 557             fprintf(stderr,"In %d bit mode.\n", dbg_mode = newmode);
 558
 559         DEBUG_DoDisplay();
 560
 561         if (!is_debug)  /* This is a real crash, dump some info */
 562         {
 563             DEBUG_InfoRegisters();
 564             DEBUG_InfoStack();
 565             if (dbg_mode == 16)
 566             {
 567                 LDT_Print( SELECTOR_TO_ENTRY(DS_reg(&DEBUG_context)), 1 );
 568                 if (ES_reg(&DEBUG_context) != DS_reg(&DEBUG_context))
 569                     LDT_Print( SELECTOR_TO_ENTRY(ES_reg(&DEBUG_context)), 1 );
 570             }
 571             LDT_Print( SELECTOR_TO_ENTRY(FS_reg(&DEBUG_context)), 1 );
 572             DEBUG_BackTrace();
 573         }
 574         else
 575         {
 576           /*
 577            * Do a quiet backtrace so that we have an idea of what the situation
 578            * is WRT the source files.
 579            */
 580             DEBUG_SilentBackTrace();
 581         }
 582
 583         if (!is_debug ||
 584             (dbg_exec_mode == EXEC_STEPI_OVER) ||
 585             (dbg_exec_mode == EXEC_STEPI_INSTR))
 586         {
 587             /* Show where we crashed */
 588             curr_frame = 0;
 589             DEBUG_PrintAddress( &addr, dbg_mode, TRUE );
 590             fprintf(stderr,":  ");
 591             if (DBG_CHECK_READ_PTR( &addr, 1 ))
 592               {
 593                 DEBUG_Disasm( &addr, TRUE );
 594                 fprintf(stderr,"\n");
 595               }
 596         }
 597
 598         ret_ok = 0;
 599         do
 600         {
 601             issue_prompt();
 602             yyparse();
 603             flush_symbols();
 604             addr.seg = CS_reg(&DEBUG_context) | (addr.seg&0xffff0000);
 605             addr.off = EIP_reg(&DEBUG_context);
 606             DBG_FIX_ADDR_SEG( &addr, 0 );
 607             ret_ok = DEBUG_ValidateRegisters();
 608             if (ret_ok) ret_ok = DBG_CHECK_READ_PTR( &addr, 1 );
 609         } while (!ret_ok);
 610     }
 611
 612     dbg_exec_mode = DEBUG_RestartExecution( dbg_exec_mode, dbg_exec_count );
 613     /*
 614      * This will have gotten absorbed into the breakpoint info
 615      * if it was used.  Otherwise it would have been ignored.
 616      * In any case, we don't mess with it any more.
 617      */
 618     if ((dbg_exec_mode == EXEC_CONT) || (dbg_exec_mode == EXEC_PASS))
 619       {
 620         dbg_exec_count = 0;
 621
 622         if ( frozen )
 623         {
 624             CLIENT_DebuggerRequest( DEBUGGER_UNFREEZE_ALL );
 625             frozen = FALSE;
 626         }
 627       }
 628
 629     in_debugger = FALSE;
 630
 631     USER_Driver->pEndDebugging();
 632 }
 633
 634
 635 DWORD wine_debugger( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
 636 {
 637     BOOL is_debug = FALSE;
 638
 639     if (first_chance && !Options.debug) return 0;  /* pass to app first */
 640
 641     switch(rec->ExceptionCode)
 642     {
 643     case EXCEPTION_BREAKPOINT:
 644     case EXCEPTION_SINGLE_STEP:
 645         is_debug = TRUE;
 646         break;
 647     case CONTROL_C_EXIT:
 648         if (!Options.debug) exit(0);
 649         break;
 650     }
 651
 652     if (!is_debug)
 653     {
 654         /* print some infos */
 655         fprintf( stderr, "%s: ",
 656                  first_chance ? "First chance exception" : "Unhandled exception" );
 657         switch(rec->ExceptionCode)
 658         {
 659         case EXCEPTION_INT_DIVIDE_BY_ZERO:
 660             fprintf( stderr, "divide by zero" );
 661             break;
 662         case EXCEPTION_INT_OVERFLOW:
 663             fprintf( stderr, "overflow" );
 664             break;
 665         case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 666             fprintf( stderr, "array bounds " );
 667             break;
 668         case EXCEPTION_ILLEGAL_INSTRUCTION:
 669             fprintf( stderr, "illegal instruction" );
 670             break;
 671         case EXCEPTION_STACK_OVERFLOW:
 672             fprintf( stderr, "stack overflow" );
 673             break;
 674         case EXCEPTION_PRIV_INSTRUCTION:
 675             fprintf( stderr, "priviledged instruction" );
 676             break;
 677         case EXCEPTION_ACCESS_VIOLATION:
 678             if (rec->NumberParameters == 2)
 679                 fprintf( stderr, "page fault on %s access to 0x%08lx",
 680                          rec->ExceptionInformation[0] ? "write" : "read",
 681                          rec->ExceptionInformation[1] );
 682             else
 683                 fprintf( stderr, "page fault" );
 684             break;
 685         case EXCEPTION_DATATYPE_MISALIGNMENT:
 686             fprintf( stderr, "Alignment" );
 687             break;
 688         case CONTROL_C_EXIT:
 689             fprintf( stderr, "^C" );
 690             break;
 691         default:
 692             fprintf( stderr, "%08lx", rec->ExceptionCode );
 693             break;
 694         }
 695     }
 696
 697     DEBUG_context = *context;
 698     DEBUG_Main( is_debug );
 699     *context = DEBUG_context;
 700     return (dbg_exec_mode == EXEC_PASS) ? 0 : DBG_CONTINUE;
 701 }
 702
 703 int yyerror(char * s)
 704 {
 705         fprintf(stderr,"%s\n", s);
 706         return 0;
 707 }