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 <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <signal.h>
  13 #include <sys/stat.h>
  14 #include <unistd.h>
  15
  16 #include "winbase.h"
  17 #include "class.h"
  18 #include "module.h"
  19 #include "task.h"
  20 #include "options.h"
  21 #include "queue.h"
  22 #include "wine/winbase16.h"
  23 #include "winnt.h"
  24 #include "win.h"
  25 #include "debugger.h"
  26 #include "neexe.h"
  27 #include "process.h"
  28 #include "server.h"
  29 #include "main.h"
  30 #include "expr.h"
  31 #include "user.h"
  32
  33 extern FILE * yyin;
  34 unsigned int dbg_mode = 0;
  35 HANDLE dbg_heap = 0;
  36 int curr_frame = 0;
  37
  38 static enum exec_mode dbg_exec_mode = EXEC_CONT;
  39 static int dbg_exec_count = 0;
  40
  41 void issue_prompt(void);
  42 void mode_command(int);
  43 void flush_symbols(void);
  44 int yylex(void);
  45 int yyerror(char *);
  46
  47 #ifdef DBG_need_heap
  48 #define malloc(x) DBG_alloc(x)
  49 #define realloc(x,y) DBG_realloc(x,y)
  50 #define free(x) DBG_free(x)
  51 #endif
  52
  53 extern void VIRTUAL_Dump(void);  /* memory/virtual.c */
  54
  55 %}
  56
  57 %union
  58 {
  59     DBG_ADDR         address;
  60     enum debug_regs  reg;
  61     char *           string;
  62     int              integer;
  63     struct list_id   listing;
  64     struct expr *    expression;
  65     struct datatype * type;
  66 }
  67
  68 %token tCONT tSTEP tLIST tNEXT tQUIT tHELP tBACKTRACE tINFO tWALK tUP tDOWN
  69 %token tENABLE tDISABLE tBREAK tDELETE tSET tMODE tPRINT tEXAM tABORT tDEBUGMSG
  70 %token tCLASS tMAPS tMODULE tSTACK tSEGMENTS tREGS tWND tQUEUE tLOCAL
  71 %token tEOL tSTRING tDEBUGSTR
  72 %token tFRAME tSHARE tCOND tDISPLAY tUNDISPLAY tDISASSEMBLE
  73 %token tSTEPI tNEXTI tFINISH tSHOW tDIR
  74 %token <string> tPATH
  75 %token <string> tIDENTIFIER tSTRING tDEBUGSTR
  76 %token <integer> tNUM tFORMAT
  77 %token <reg> tREG
  78 %token tSYMBOLFILE
  79
  80 %token tCHAR tSHORT tINT tLONG tFLOAT tDOUBLE tUNSIGNED tSIGNED
  81 %token tSTRUCT tUNION tENUM
  82
  83 /* %left ',' */
  84 /* %left '=' OP_OR_EQUAL OP_XOR_EQUAL OP_AND_EQUAL OP_SHL_EQUAL \
  85          OP_SHR_EQUAL OP_PLUS_EQUAL OP_MINUS_EQUAL \
  86          OP_TIMES_EQUAL OP_DIVIDE_EQUAL OP_MODULO_EQUAL */
  87 /* %left OP_COND */ /* ... ? ... : ... */
  88 %left OP_LOR
  89 %left OP_LAND
  90 %left '|'
  91 %left '^'
  92 %left '&'
  93 %left OP_EQ OP_NE
  94 %left '<' '>' OP_LE OP_GE
  95 %left OP_SHL OP_SHR
  96 %left '+' '-'
  97 %left '*' '/' '%'
  98 %left OP_SIGN '!' '~' OP_DEREF /* OP_INC OP_DEC OP_ADDR */
  99 %left '.' '[' OP_DRF
 100 %nonassoc ':'
 101
 102 %type <expression> expr lval lvalue
 103 %type <type> type_cast type_expr
 104 %type <address> expr_addr lval_addr
 105 %type <integer> expr_value
 106 %type <string> pathname
 107
 108 %type <listing> list_arg
 109
 110 %%
 111
 112 input: line                    { issue_prompt(); }
 113     | input line               { issue_prompt(); }
 114
 115 line: command
 116     | tEOL
 117     | error tEOL               { yyerrok; }
 118
 119 command:
 120       tQUIT tEOL               { exit(0); }
 121     | tHELP tEOL               { DEBUG_Help(); }
 122     | tHELP tINFO tEOL         { DEBUG_HelpInfo(); }
 123     | tCONT tEOL               { dbg_exec_count = 1;
 124                                  dbg_exec_mode = EXEC_CONT; return 0; }
 125     | tCONT tNUM tEOL          { dbg_exec_count = $2;
 126                                  dbg_exec_mode = EXEC_CONT; return 0; }
 127     | tSTEP tEOL               { dbg_exec_count = 1;
 128                                  dbg_exec_mode = EXEC_STEP_INSTR; return 0; }
 129     | tNEXT tEOL               { dbg_exec_count = 1;
 130                                  dbg_exec_mode = EXEC_STEP_OVER; return 0; }
 131     | tSTEP tNUM tEOL          { dbg_exec_count = $2;
 132                                  dbg_exec_mode = EXEC_STEP_INSTR; return 0; }
 133     | tNEXT tNUM tEOL          { dbg_exec_count = $2;
 134                                  dbg_exec_mode = EXEC_STEP_OVER; return 0; }
 135     | tSTEPI tEOL              { dbg_exec_count = 1;
 136                                  dbg_exec_mode = EXEC_STEPI_INSTR; return 0; }
 137     | tNEXTI tEOL              { dbg_exec_count = 1;
 138                                  dbg_exec_mode = EXEC_STEPI_OVER; return 0; }
 139     | tSTEPI tNUM tEOL         { dbg_exec_count = $2;
 140                                  dbg_exec_mode = EXEC_STEPI_INSTR; return 0; }
 141     | tNEXTI tNUM tEOL         { dbg_exec_count = $2;
 142                                  dbg_exec_mode = EXEC_STEPI_OVER; return 0; }
 143     | tABORT tEOL              { kill(getpid(), SIGABRT); }
 144     | tMODE tNUM tEOL          { mode_command($2); }
 145     | tENABLE tNUM tEOL        { DEBUG_EnableBreakpoint( $2, TRUE ); }
 146     | tDISABLE tNUM tEOL       { DEBUG_EnableBreakpoint( $2, FALSE ); }
 147     | tDELETE tBREAK tNUM tEOL { DEBUG_DelBreakpoint( $3 ); }
 148     | tBACKTRACE tEOL          { DEBUG_BackTrace(); }
 149     | tUP tEOL                 { DEBUG_SetFrame( curr_frame + 1 );  }
 150     | tUP tNUM tEOL            { DEBUG_SetFrame( curr_frame + $2 ); }
 151     | tDOWN tEOL               { DEBUG_SetFrame( curr_frame - 1 );  }
 152     | tDOWN tNUM tEOL          { DEBUG_SetFrame( curr_frame - $2 ); }
 153     | tFRAME tNUM tEOL         { DEBUG_SetFrame( $2 ); }
 154     | tFINISH tEOL             { dbg_exec_count = 0;
 155                                  dbg_exec_mode = EXEC_FINISH; return 0; }
 156     | tSHOW tDIR tEOL          { DEBUG_ShowDir(); }
 157     | tDIR pathname tEOL       { DEBUG_AddPath( $2 ); }
 158     | tDIR tEOL                { DEBUG_NukePath(); }
 159     | tDISPLAY tEOL            { DEBUG_InfoDisplay(); }
 160     | tDISPLAY expr tEOL       { DEBUG_AddDisplay($2, 1, 0); }
 161     | tDISPLAY tFORMAT expr tEOL { DEBUG_AddDisplay($3, $2 >> 8, $2 & 0xff); }
 162     | tDELETE tDISPLAY tNUM tEOL { DEBUG_DelDisplay( $3 ); }
 163     | tDELETE tDISPLAY tEOL    { DEBUG_DelDisplay( -1 ); }
 164     | tUNDISPLAY tNUM tEOL     { DEBUG_DelDisplay( $2 ); }
 165     | tUNDISPLAY tEOL          { DEBUG_DelDisplay( -1 ); }
 166     | tCOND tNUM tEOL          { DEBUG_AddBPCondition($2, NULL); }
 167     | tCOND tNUM expr tEOL     { DEBUG_AddBPCondition($2, $3); }
 168     | tDEBUGMSG tDEBUGSTR tEOL { MAIN_ParseDebugOptions($2); }
 169     | tSYMBOLFILE pathname tEOL{ DEBUG_ReadSymbolTable($2); }
 170     | list_command
 171     | disassemble_command
 172     | set_command
 173     | x_command
 174     | print_command
 175     | break_command
 176     | info_command
 177     | walk_command
 178
 179 set_command:
 180       tSET tREG '=' expr_value tEOL        { DEBUG_SetRegister( $2, $4 );
 181                                              DEBUG_FreeExprMem(); }
 182     | tSET lval_addr '=' expr_value tEOL   { DEBUG_WriteMemory( &$2, $4 );
 183                                              DEBUG_FreeExprMem(); }
 184
 185 pathname:
 186       tIDENTIFIER                    { $$ = $1; }
 187     | tPATH                          { $$ = $1; }
 188
 189 disassemble_command:
 190       tDISASSEMBLE tEOL              { DEBUG_Disassemble( NULL, NULL, 10 ); }
 191     | tDISASSEMBLE expr_addr tEOL    { DEBUG_Disassemble( & $2, NULL, 10 ); }
 192     | tDISASSEMBLE expr_addr ',' expr_addr tEOL { DEBUG_Disassemble( & $2, & $4, 0 ); }
 193
 194 list_command:
 195       tLIST tEOL               { DEBUG_List( NULL, NULL, 10 ); }
 196     | tLIST '-' tEOL           { DEBUG_List( NULL, NULL, -10 ); }
 197     | tLIST list_arg tEOL      { DEBUG_List( & $2, NULL, 10 ); }
 198     | tLIST ',' list_arg tEOL  { DEBUG_List( NULL, & $3, -10 ); }
 199     | tLIST list_arg ',' list_arg tEOL { DEBUG_List( & $2, & $4, 0 ); }
 200
 201 list_arg:
 202       tNUM                     { $$.sourcefile = NULL; $$.line = $1; }
 203     | pathname ':' tNUM        { $$.sourcefile = $1; $$.line = $3; }
 204     | tIDENTIFIER              { DEBUG_GetFuncInfo( & $$, NULL, $1); }
 205     | pathname ':' tIDENTIFIER { DEBUG_GetFuncInfo( & $$, $1, $3); }
 206     | '*' expr_addr            { DEBUG_FindNearestSymbol( & $2, FALSE, NULL,
 207                                                         0, & $$ );
 208                                              DEBUG_FreeExprMem(); }
 209
 210 x_command:
 211       tEXAM expr_addr tEOL     { DEBUG_ExamineMemory( &$2, 1, 'x');
 212                                              DEBUG_FreeExprMem(); }
 213     | tEXAM tFORMAT expr_addr tEOL  { DEBUG_ExamineMemory( &$3, $2>>8, $2&0xff );
 214                                              DEBUG_FreeExprMem(); }
 215
 216 print_command:
 217       tPRINT expr_addr tEOL    { DEBUG_Print( &$2, 1, 0, 0 );
 218                                              DEBUG_FreeExprMem(); }
 219     | tPRINT tFORMAT expr_addr tEOL { DEBUG_Print( &$3, $2 >> 8, $2 & 0xff, 0 );
 220                                              DEBUG_FreeExprMem(); }
 221
 222 break_command:
 223       tBREAK '*' expr_addr tEOL { DEBUG_AddBreakpoint( &$3 );
 224                                              DEBUG_FreeExprMem(); }
 225     | tBREAK tIDENTIFIER tEOL  { DBG_ADDR addr;
 226                                  if( DEBUG_GetSymbolValue($2, -1, &addr, TRUE) )
 227                                    {
 228                                      DEBUG_AddBreakpoint( &addr );
 229                                    }
 230                                  else
 231                                    {
 232                                      fprintf(stderr,"Unable to add breakpoint\n");
 233                                    }
 234                                 }
 235     | tBREAK tIDENTIFIER ':' tNUM tEOL  { DBG_ADDR addr;
 236                                  if( DEBUG_GetSymbolValue($2, $4, &addr, TRUE) )
 237                                    {
 238                                      DEBUG_AddBreakpoint( &addr );
 239                                    }
 240                                  else
 241                                    {
 242                                      fprintf(stderr,"Unable to add breakpoint\n");
 243                                    }
 244                                 }
 245     | tBREAK tNUM tEOL         { struct name_hash *nh;
 246                                  DBG_ADDR addr;
 247                                  TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 248
 249                                  addr.type = NULL;
 250                                  addr.seg = CS_reg(&DEBUG_context);
 251                                  addr.off = EIP_reg(&DEBUG_context);
 252
 253                                  if (ISV86(&DEBUG_context))
 254                                      addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 255                                  DBG_FIX_ADDR_SEG( &addr, CS_reg(&DEBUG_context) );
 256                                  GlobalUnlock16( GetCurrentTask() );
 257                                  DEBUG_FindNearestSymbol(&addr, TRUE,
 258                                                          &nh, 0, NULL);
 259                                  if( nh != NULL )
 260                                    {
 261                                      DEBUG_GetLineNumberAddr(nh,
 262                                                       $2, &addr, TRUE);
 263                                      DEBUG_AddBreakpoint( &addr );
 264                                    }
 265                                  else
 266                                    {
 267                                      fprintf(stderr,"Unable to add breakpoint\n");
 268                                    }
 269                                }
 270
 271     | tBREAK tEOL              { DBG_ADDR addr;
 272                                  TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 273
 274                                  addr.type = NULL;
 275                                  addr.seg = CS_reg(&DEBUG_context);
 276                                  addr.off = EIP_reg(&DEBUG_context);
 277
 278                                  if (ISV86(&DEBUG_context))
 279                                      addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 280                                  GlobalUnlock16( GetCurrentTask() );
 281                                  DEBUG_AddBreakpoint( &addr );
 282                                }
 283
 284 info_command:
 285       tINFO tBREAK tEOL         { DEBUG_InfoBreakpoints(); }
 286     | tINFO tCLASS expr_value tEOL    { CLASS_DumpClass( (CLASS *)$3 );
 287                                              DEBUG_FreeExprMem(); }
 288     | tINFO tSHARE tEOL         { DEBUG_InfoShare(); }
 289     | tINFO tMODULE expr_value tEOL   { NE_DumpModule( $3 );
 290                                              DEBUG_FreeExprMem(); }
 291     | tINFO tQUEUE expr_value tEOL    { QUEUE_DumpQueue( $3 );
 292                                              DEBUG_FreeExprMem(); }
 293     | tINFO tREGS tEOL          { DEBUG_InfoRegisters(); }
 294     | tINFO tSEGMENTS expr_value tEOL { LDT_Print( SELECTOR_TO_ENTRY($3), 1 );
 295                                              DEBUG_FreeExprMem(); }
 296     | tINFO tSEGMENTS tEOL      { LDT_Print( 0, -1 ); }
 297     | tINFO tSTACK tEOL         { DEBUG_InfoStack(); }
 298     | tINFO tMAPS tEOL          { VIRTUAL_Dump(); }
 299     | tINFO tWND expr_value tEOL      { WIN_DumpWindow( $3 );
 300                                              DEBUG_FreeExprMem(); }
 301     | tINFO tLOCAL tEOL         { DEBUG_InfoLocals(); }
 302     | tINFO tDISPLAY tEOL       { DEBUG_InfoDisplay(); }
 303
 304 walk_command:
 305       tWALK tCLASS tEOL         { CLASS_WalkClasses(); }
 306     | tWALK tMODULE tEOL        { NE_WalkModules(); }
 307     | tWALK tQUEUE tEOL         { QUEUE_WalkQueues(); }
 308     | tWALK tWND tEOL           { WIN_WalkWindows( 0, 0 ); }
 309     | tWALK tWND tNUM tEOL      { WIN_WalkWindows( $3, 0 ); }
 310
 311
 312 type_cast:
 313       '(' type_expr ')'         { $$ = $2; }
 314
 315 type_expr:
 316       type_expr '*'             { $$ = DEBUG_FindOrMakePointerType($1); }
 317     |  tINT                     { $$ = DEBUG_TypeCast(DT_BASIC, "int"); }
 318     | tCHAR                     { $$ = DEBUG_TypeCast(DT_BASIC, "char"); }
 319     | tLONG tINT                { $$ = DEBUG_TypeCast(DT_BASIC, "long int"); }
 320     | tUNSIGNED tINT            { $$ = DEBUG_TypeCast(DT_BASIC, "unsigned int"); }
 321     | tLONG tUNSIGNED tINT      { $$ = DEBUG_TypeCast(DT_BASIC, "long unsigned int"); }
 322     | tLONG tLONG tINT          { $$ = DEBUG_TypeCast(DT_BASIC, "long long int"); }
 323     | tLONG tLONG tUNSIGNED tINT { $$ = DEBUG_TypeCast(DT_BASIC, "long long unsigned int"); }
 324     | tSHORT tINT               { $$ = DEBUG_TypeCast(DT_BASIC, "short int"); }
 325     | tSHORT tUNSIGNED tINT     { $$ = DEBUG_TypeCast(DT_BASIC, "short unsigned int"); }
 326     | tSIGNED tCHAR             { $$ = DEBUG_TypeCast(DT_BASIC, "signed char"); }
 327     | tUNSIGNED tCHAR           { $$ = DEBUG_TypeCast(DT_BASIC, "unsigned char"); }
 328     | tFLOAT                    { $$ = DEBUG_TypeCast(DT_BASIC, "float"); }
 329     | tDOUBLE                   { $$ = DEBUG_TypeCast(DT_BASIC, "double"); }
 330     | tLONG tDOUBLE             { $$ = DEBUG_TypeCast(DT_BASIC, "long double"); }
 331     | tSTRUCT tIDENTIFIER       { $$ = DEBUG_TypeCast(DT_STRUCT, $2); }
 332     | tUNION tIDENTIFIER        { $$ = DEBUG_TypeCast(DT_STRUCT, $2); }
 333     | tENUM tIDENTIFIER         { $$ = DEBUG_TypeCast(DT_ENUM, $2); }
 334
 335 expr_addr:
 336     expr                         { $$ = DEBUG_EvalExpr($1); }
 337
 338 expr_value:
 339       expr        { DBG_ADDR addr  = DEBUG_EvalExpr($1);
 340                     $$ = addr.off ? *(unsigned int *) addr.off : 0; }
 341 /*
 342  * The expr rule builds an expression tree.  When we are done, we call
 343  * EvalExpr to evaluate the value of the expression.  The advantage of
 344  * the two-step approach is that it is possible to save expressions for
 345  * use in 'display' commands, and in conditional watchpoints.
 346  */
 347 expr:
 348       tNUM                       { $$ = DEBUG_ConstExpr($1); }
 349     | tSTRING                    { $$ = DEBUG_StringExpr($1); }
 350     | tREG                       { $$ = DEBUG_RegisterExpr($1); }
 351     | tIDENTIFIER                { $$ = DEBUG_SymbolExpr($1); }
 352     | expr OP_DRF tIDENTIFIER    { $$ = DEBUG_StructPExpr($1, $3); }
 353     | expr '.' tIDENTIFIER       { $$ = DEBUG_StructExpr($1, $3); }
 354     | tIDENTIFIER '(' ')'        { $$ = DEBUG_CallExpr($1, 0); }
 355     | tIDENTIFIER '(' expr ')'   { $$ = DEBUG_CallExpr($1, 1, $3); }
 356     | tIDENTIFIER '(' expr ',' expr ')'  { $$ = DEBUG_CallExpr($1, 2, $3,
 357                                                                $5); }
 358     | tIDENTIFIER '(' expr ',' expr ',' expr ')'         { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7); }
 359     | tIDENTIFIER '(' expr ',' expr ',' expr ',' expr ')'        { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7, $9); }
 360     | tIDENTIFIER '(' expr ',' expr ',' expr ',' expr ',' expr ')'       { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7, $9, $11); }
 361     | expr '[' expr ']'          { $$ = DEBUG_BinopExpr(EXP_OP_ARR, $1, $3); }
 362     | expr ':' expr              { $$ = DEBUG_BinopExpr(EXP_OP_SEG, $1, $3); }
 363     | expr OP_LOR expr           { $$ = DEBUG_BinopExpr(EXP_OP_LOR, $1, $3); }
 364     | expr OP_LAND expr          { $$ = DEBUG_BinopExpr(EXP_OP_LAND, $1, $3); }
 365     | expr '|' expr              { $$ = DEBUG_BinopExpr(EXP_OP_OR, $1, $3); }
 366     | expr '&' expr              { $$ = DEBUG_BinopExpr(EXP_OP_AND, $1, $3); }
 367     | expr '^' expr              { $$ = DEBUG_BinopExpr(EXP_OP_XOR, $1, $3); }
 368     | expr OP_EQ expr            { $$ = DEBUG_BinopExpr(EXP_OP_EQ, $1, $3); }
 369     | expr '>' expr              { $$ = DEBUG_BinopExpr(EXP_OP_GT, $1, $3); }
 370     | expr '<' expr              { $$ = DEBUG_BinopExpr(EXP_OP_LT, $1, $3); }
 371     | expr OP_GE expr            { $$ = DEBUG_BinopExpr(EXP_OP_GE, $1, $3); }
 372     | expr OP_LE expr            { $$ = DEBUG_BinopExpr(EXP_OP_LE, $1, $3); }
 373     | expr OP_NE expr            { $$ = DEBUG_BinopExpr(EXP_OP_NE, $1, $3); }
 374     | expr OP_SHL expr           { $$ = DEBUG_BinopExpr(EXP_OP_SHL, $1, $3); }
 375     | expr OP_SHR expr           { $$ = DEBUG_BinopExpr(EXP_OP_SHR, $1, $3); }
 376     | expr '+' expr              { $$ = DEBUG_BinopExpr(EXP_OP_ADD, $1, $3); }
 377     | expr '-' expr              { $$ = DEBUG_BinopExpr(EXP_OP_SUB, $1, $3); }
 378     | expr '*' expr              { $$ = DEBUG_BinopExpr(EXP_OP_MUL, $1, $3); }
 379     | expr '/' expr              { $$ = DEBUG_BinopExpr(EXP_OP_DIV, $1, $3); }
 380     | expr '%' expr              { $$ = DEBUG_BinopExpr(EXP_OP_REM, $1, $3); }
 381     | '-' expr %prec OP_SIGN     { $$ = DEBUG_UnopExpr(EXP_OP_NEG, $2); }
 382     | '+' expr %prec OP_SIGN     { $$ = $2; }
 383     | '!' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_NOT, $2); }
 384     | '~' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_LNOT, $2); }
 385     | '(' expr ')'               { $$ = $2; }
 386     | '*' expr %prec OP_DEREF    { $$ = DEBUG_UnopExpr(EXP_OP_DEREF, $2); }
 387     | '&' expr %prec OP_DEREF    { $$ = DEBUG_UnopExpr(EXP_OP_ADDR, $2); }
 388     | type_cast expr %prec OP_DEREF { $$ = DEBUG_TypeCastExpr($1, $2); }
 389
 390 /*
 391  * The lvalue rule builds an expression tree.  This is a limited form
 392  * of expression that is suitable to be used as an lvalue.
 393  */
 394 lval_addr:
 395     lval                         { $$ = DEBUG_EvalExpr($1); }
 396
 397 lval:
 398       lvalue                     { $$ = $1; }
 399     | '*' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_FORCE_DEREF, $2); }
 400
 401 lvalue:
 402       tNUM                       { $$ = DEBUG_ConstExpr($1); }
 403     | tREG                       { $$ = DEBUG_RegisterExpr($1); }
 404     | tIDENTIFIER                { $$ = DEBUG_SymbolExpr($1); }
 405     | lvalue OP_DRF tIDENTIFIER  { $$ = DEBUG_StructPExpr($1, $3); }
 406     | lvalue '.' tIDENTIFIER     { $$ = DEBUG_StructExpr($1, $3); }
 407     | lvalue '[' expr ']'        { $$ = DEBUG_BinopExpr(EXP_OP_ARR, $1, $3); }
 408
 409 %%
 410
 411 void
 412 issue_prompt(){
 413 #ifdef DONT_USE_READLINE
 414         fprintf(stderr,"Wine-dbg>");
 415 #endif
 416 }
 417
 418 void mode_command(int newmode)
 419 {
 420     if ((newmode == 16) || (newmode == 32)) dbg_mode = newmode;
 421     else fprintf(stderr,"Invalid mode (use 16 or 32)\n");
 422 }
 423
 424
 425 /***********************************************************************
 426  *           DEBUG_Main
 427  *
 428  * Debugger main loop.
 429  */
 430 static void DEBUG_Main( int signal )
 431 {
 432     static int loaded_symbols = 0;
 433     static BOOL frozen = FALSE;
 434     static BOOL in_debugger = FALSE;
 435     char SymbolTableFile[256];
 436     int newmode;
 437     BOOL ret_ok;
 438 #ifdef YYDEBUG
 439     yydebug = 0;
 440 #endif
 441
 442     if (in_debugger)
 443     {
 444         fprintf( stderr, "Segmentation fault inside debugger, exiting.\n" );
 445         exit(1);
 446     }
 447     in_debugger = TRUE;
 448     yyin = stdin;
 449
 450     DEBUG_SetBreakpoints( FALSE );
 451
 452     if (!loaded_symbols)
 453     {
 454         loaded_symbols++;
 455
 456         if ( !frozen )
 457         {
 458             CLIENT_DebuggerRequest( DEBUGGER_FREEZE_ALL );
 459             frozen = TRUE;
 460         }
 461
 462 #ifdef DBG_need_heap
 463         /*
 464          * Initialize the debugger heap.
 465          */
 466         dbg_heap = HeapCreate(HEAP_NO_SERIALIZE, 0x1000, 0x8000000); /* 128MB */
 467 #endif
 468
 469         /*
 470          * Initialize the type handling stuff.
 471          */
 472         DEBUG_InitTypes();
 473
 474         /*
 475          * In some cases we can read the stabs information directly
 476          * from the executable.  If this is the case, we don't need
 477          * to bother with trying to read a symbol file, as the stabs
 478          * also have line number and local variable information.
 479          * As long as gcc is used for the compiler, stabs will
 480          * be the default.  On SVr4, DWARF could be used, but we
 481          * don't grok that yet, and in this case we fall back to using
 482          * the wine.sym file.
 483          */
 484         if( DEBUG_ReadExecutableDbgInfo() == FALSE )
 485         {
 486             char *symfilename = "wine.sym";
 487             struct stat statbuf;
 488             if (-1 == stat(symfilename, &statbuf) )
 489                 symfilename = LIBDIR "wine.sym";
 490
 491             PROFILE_GetWineIniString( "wine", "SymbolTableFile", symfilename,
 492                                      SymbolTableFile, sizeof(SymbolTableFile));
 493             DEBUG_ReadSymbolTable( SymbolTableFile );
 494         }
 495
 496         DEBUG_LoadEntryPoints();
 497         DEBUG_ProcessDeferredDebug();
 498     }
 499
 500 #if 0
 501     fprintf(stderr, "Entering debugger  PC=%x, mode=%d, count=%d\n",
 502             EIP_reg(&DEBUG_context),
 503             dbg_exec_mode, dbg_exec_count);
 504
 505     sleep(1);
 506 #endif
 507
 508     if ((signal != SIGTRAP) || !DEBUG_ShouldContinue( dbg_exec_mode,
 509                                                       &dbg_exec_count ))
 510     {
 511         DBG_ADDR addr;
 512         TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 513
 514         addr.seg = CS_reg(&DEBUG_context);
 515         addr.off = EIP_reg(&DEBUG_context);
 516         if (ISV86(&DEBUG_context)) addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 517         addr.type = NULL;
 518         DBG_FIX_ADDR_SEG( &addr, 0 );
 519
 520         GlobalUnlock16( GetCurrentTask() );
 521
 522         if ( !frozen )
 523         {
 524             CLIENT_DebuggerRequest( DEBUGGER_FREEZE_ALL );
 525             frozen = TRUE;
 526         }
 527
 528         /* Put the display in a correct state */
 529         USER_Driver->pBeginDebugging();
 530
 531         newmode = ISV86(&DEBUG_context) ? 16 : IS_SELECTOR_32BIT(addr.seg) ? 32 : 16;
 532         if (newmode != dbg_mode)
 533             fprintf(stderr,"In %d bit mode.\n", dbg_mode = newmode);
 534
 535         DEBUG_DoDisplay();
 536
 537         if (signal != SIGTRAP)  /* This is a real crash, dump some info */
 538         {
 539             DEBUG_InfoRegisters();
 540             DEBUG_InfoStack();
 541             if (dbg_mode == 16)
 542             {
 543                 LDT_Print( SELECTOR_TO_ENTRY(DS_reg(&DEBUG_context)), 1 );
 544                 if (ES_reg(&DEBUG_context) != DS_reg(&DEBUG_context))
 545                     LDT_Print( SELECTOR_TO_ENTRY(ES_reg(&DEBUG_context)), 1 );
 546             }
 547             DEBUG_BackTrace();
 548         }
 549         else
 550         {
 551           /*
 552            * Do a quiet backtrace so that we have an idea of what the situation
 553            * is WRT the source files.
 554            */
 555             DEBUG_SilentBackTrace();
 556         }
 557
 558         if ((signal != SIGTRAP) ||
 559             (dbg_exec_mode == EXEC_STEPI_OVER) ||
 560             (dbg_exec_mode == EXEC_STEPI_INSTR))
 561         {
 562             /* Show where we crashed */
 563             curr_frame = 0;
 564             DEBUG_PrintAddress( &addr, dbg_mode, TRUE );
 565             fprintf(stderr,":  ");
 566             if (DBG_CHECK_READ_PTR( &addr, 1 ))
 567               {
 568                 DEBUG_Disasm( &addr, TRUE );
 569                 fprintf(stderr,"\n");
 570               }
 571         }
 572
 573         ret_ok = 0;
 574         do
 575         {
 576             issue_prompt();
 577             yyparse();
 578             flush_symbols();
 579             addr.seg = CS_reg(&DEBUG_context) | (addr.seg&0xffff0000);
 580             addr.off = EIP_reg(&DEBUG_context);
 581             DBG_FIX_ADDR_SEG( &addr, 0 );
 582             ret_ok = DEBUG_ValidateRegisters();
 583             if (ret_ok) ret_ok = DBG_CHECK_READ_PTR( &addr, 1 );
 584         } while (!ret_ok);
 585     }
 586
 587     dbg_exec_mode = DEBUG_RestartExecution( dbg_exec_mode, dbg_exec_count );
 588     /*
 589      * This will have gotten absorbed into the breakpoint info
 590      * if it was used.  Otherwise it would have been ignored.
 591      * In any case, we don't mess with it any more.
 592      */
 593     if( dbg_exec_mode == EXEC_CONT )
 594       {
 595         dbg_exec_count = 0;
 596
 597         if ( frozen )
 598         {
 599             CLIENT_DebuggerRequest( DEBUGGER_UNFREEZE_ALL );
 600             frozen = FALSE;
 601         }
 602       }
 603
 604     in_debugger = FALSE;
 605
 606     USER_Driver->pEndDebugging();
 607 }
 608
 609
 610
 611 /***********************************************************************
 612  *           DebugBreak   (KERNEL.203) (KERNEL32.181)
 613  */
 614 void DebugBreak16( CONTEXT *regs )
 615 {
 616     char module[10];
 617     if (!GetModuleName16( GetCurrentTask(), module, sizeof(module) ))
 618         strcpy( module, "???" );
 619     fprintf( stderr, "%s called DebugBreak\n", module );
 620     DEBUG_context = *regs;
 621     DEBUG_Main( SIGTRAP );
 622 }
 623
 624
 625 void ctx_debug( int signal, CONTEXT *regs )
 626 {
 627     DEBUG_context = *regs;
 628     DEBUG_Main( signal );
 629     *regs = DEBUG_context;
 630 }
 631
 632 void wine_debug( int signal, SIGCONTEXT *regs )
 633 {
 634 #if 0
 635     DWORD *stack = (DWORD *)ESP_sig(regs);
 636     *(--stack) = 0;
 637     *(--stack) = 0;
 638     *(--stack) = EH_NONCONTINUABLE;
 639     *(--stack) = EXCEPTION_ACCESS_VIOLATION;
 640     *(--stack) = EIP_sig(regs);
 641     ESP_sig(regs) = (DWORD)stack;
 642     EIP_sig(regs) = (DWORD)RaiseException;
 643 #else
 644     DEBUG_SetSigContext( regs );
 645     DEBUG_Main( signal );
 646     DEBUG_GetSigContext( regs );
 647 #endif
 648 }
 649
 650 int yyerror(char * s)
 651 {
 652         fprintf(stderr,"%s\n", s);
 653         return 0;
 654 }