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