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 #include "ts_xlib.h"
  11 #include "x11drv.h"
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <signal.h>
  17 #include <sys/stat.h>
  18 #include <unistd.h>
  19 #include "winbase.h"
  20 #include "class.h"
  21 #include "module.h"
  22 #include "task.h"
  23 #include "options.h"
  24 #include "queue.h"
  25 #include "wine/winbase16.h"
  26 #include "winnt.h"
  27 #include "win.h"
  28 #include "debugger.h"
  29 #include "neexe.h"
  30 #include "process.h"
  31 #include "main.h"
  32 #include "expr.h"
  33
  34 extern FILE * yyin;
  35 unsigned int dbg_mode = 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 extern void VIRTUAL_Dump(void);  /* memory/virtual.c */
  48
  49 %}
  50
  51 %union
  52 {
  53     DBG_ADDR         address;
  54     enum debug_regs  reg;
  55     char *           string;
  56     int              integer;
  57     struct list_id   listing;
  58     struct expr *    expression;
  59     struct datatype * type;
  60 }
  61
  62 %token tCONT tSTEP tLIST tNEXT tQUIT tHELP tBACKTRACE tINFO tWALK tUP tDOWN
  63 %token tENABLE tDISABLE tBREAK tDELETE tSET tMODE tPRINT tEXAM tABORT tDEBUGMSG
  64 %token tCLASS tMAPS tMODULE tSTACK tSEGMENTS tREGS tWND tQUEUE tLOCAL
  65 %token tEOL tSTRING tDEBUGSTR
  66 %token tFRAME tSHARE tCOND tDISPLAY tUNDISPLAY tDISASSEMBLE
  67 %token tSTEPI tNEXTI tFINISH tSHOW tDIR
  68 %token <string> tPATH
  69 %token <string> tIDENTIFIER tSTRING tDEBUGSTR
  70 %token <integer> tNUM tFORMAT
  71 %token <reg> tREG
  72 %token tSYMBOLFILE
  73
  74 %token tCHAR tSHORT tINT tLONG tFLOAT tDOUBLE tUNSIGNED tSIGNED
  75 %token tSTRUCT tUNION tENUM
  76
  77 /* %left ',' */
  78 /* %left '=' OP_OR_EQUAL OP_XOR_EQUAL OP_AND_EQUAL OP_SHL_EQUAL \
  79          OP_SHR_EQUAL OP_PLUS_EQUAL OP_MINUS_EQUAL \
  80          OP_TIMES_EQUAL OP_DIVIDE_EQUAL OP_MODULO_EQUAL */
  81 /* %left OP_COND */ /* ... ? ... : ... */
  82 %left OP_LOR
  83 %left OP_LAND
  84 %left '|'
  85 %left '^'
  86 %left '&'
  87 %left OP_EQ OP_NE
  88 %left '<' '>' OP_LE OP_GE
  89 %left OP_SHL OP_SHR
  90 %left '+' '-'
  91 %left '*' '/' '%'
  92 %left OP_SIGN '!' '~' OP_DEREF /* OP_INC OP_DEC OP_ADDR */
  93 %left '.' '[' OP_DRF
  94 %nonassoc ':'
  95
  96 %type <expression> expr lval lvalue
  97 %type <type> type_cast type_expr
  98 %type <address> expr_addr lval_addr
  99 %type <integer> expr_value
 100 %type <string> pathname
 101
 102 %type <listing> list_arg
 103
 104 %%
 105
 106 input: line                    { issue_prompt(); }
 107     | input line               { issue_prompt(); }
 108
 109 line: command
 110     | tEOL
 111     | error tEOL               { yyerrok; }
 112
 113 command:
 114       tQUIT tEOL               { exit(0); }
 115     | tHELP tEOL               { DEBUG_Help(); }
 116     | tHELP tINFO tEOL         { DEBUG_HelpInfo(); }
 117     | tCONT tEOL               { dbg_exec_count = 1;
 118                                  dbg_exec_mode = EXEC_CONT; return 0; }
 119     | tCONT tNUM tEOL          { dbg_exec_count = $2;
 120                                  dbg_exec_mode = EXEC_CONT; return 0; }
 121     | tSTEP tEOL               { dbg_exec_count = 1;
 122                                  dbg_exec_mode = EXEC_STEP_INSTR; return 0; }
 123     | tNEXT tEOL               { dbg_exec_count = 1;
 124                                  dbg_exec_mode = EXEC_STEP_OVER; return 0; }
 125     | tSTEP tNUM tEOL          { dbg_exec_count = $2;
 126                                  dbg_exec_mode = EXEC_STEP_INSTR; return 0; }
 127     | tNEXT tNUM tEOL          { dbg_exec_count = $2;
 128                                  dbg_exec_mode = EXEC_STEP_OVER; return 0; }
 129     | tSTEPI tEOL              { dbg_exec_count = 1;
 130                                  dbg_exec_mode = EXEC_STEPI_INSTR; return 0; }
 131     | tNEXTI tEOL              { dbg_exec_count = 1;
 132                                  dbg_exec_mode = EXEC_STEPI_OVER; return 0; }
 133     | tSTEPI tNUM tEOL         { dbg_exec_count = $2;
 134                                  dbg_exec_mode = EXEC_STEPI_INSTR; return 0; }
 135     | tNEXTI tNUM tEOL         { dbg_exec_count = $2;
 136                                  dbg_exec_mode = EXEC_STEPI_OVER; return 0; }
 137     | tABORT tEOL              { kill(getpid(), SIGABRT); }
 138     | tMODE tNUM tEOL          { mode_command($2); }
 139     | tENABLE tNUM tEOL        { DEBUG_EnableBreakpoint( $2, TRUE ); }
 140     | tDISABLE tNUM tEOL       { DEBUG_EnableBreakpoint( $2, FALSE ); }
 141     | tDELETE tBREAK tNUM tEOL { DEBUG_DelBreakpoint( $3 ); }
 142     | tBACKTRACE tEOL          { DEBUG_BackTrace(); }
 143     | tUP tEOL                 { DEBUG_SetFrame( curr_frame + 1 );  }
 144     | tUP tNUM tEOL            { DEBUG_SetFrame( curr_frame + $2 ); }
 145     | tDOWN tEOL               { DEBUG_SetFrame( curr_frame - 1 );  }
 146     | tDOWN tNUM tEOL          { DEBUG_SetFrame( curr_frame - $2 ); }
 147     | tFRAME tNUM tEOL         { DEBUG_SetFrame( $2 ); }
 148     | tFINISH tEOL             { dbg_exec_count = 0;
 149                                  dbg_exec_mode = EXEC_FINISH; return 0; }
 150     | tSHOW tDIR tEOL          { DEBUG_ShowDir(); }
 151     | tDIR pathname tEOL       { DEBUG_AddPath( $2 ); }
 152     | tDIR tEOL                { DEBUG_NukePath(); }
 153     | tDISPLAY tEOL            { DEBUG_InfoDisplay(); }
 154     | tDISPLAY expr tEOL       { DEBUG_AddDisplay($2, 1, 0); }
 155     | tDISPLAY tFORMAT expr tEOL { DEBUG_AddDisplay($3, $2 >> 8, $2 & 0xff); }
 156     | tDELETE tDISPLAY tNUM tEOL { DEBUG_DelDisplay( $3 ); }
 157     | tDELETE tDISPLAY tEOL    { DEBUG_DelDisplay( -1 ); }
 158     | tUNDISPLAY tNUM tEOL     { DEBUG_DelDisplay( $2 ); }
 159     | tUNDISPLAY tEOL          { DEBUG_DelDisplay( -1 ); }
 160     | tCOND tNUM tEOL          { DEBUG_AddBPCondition($2, NULL); }
 161     | tCOND tNUM expr tEOL     { DEBUG_AddBPCondition($2, $3); }
 162     | tDEBUGMSG tDEBUGSTR tEOL { MAIN_ParseDebugOptions($2); }
 163     | tSYMBOLFILE pathname tEOL{ DEBUG_ReadSymbolTable($2); }
 164     | list_command
 165     | disassemble_command
 166     | set_command
 167     | x_command
 168     | print_command
 169     | break_command
 170     | info_command
 171     | walk_command
 172
 173 set_command:
 174       tSET tREG '=' expr_value tEOL        { DEBUG_SetRegister( $2, $4 );
 175                                              DEBUG_FreeExprMem(); }
 176     | tSET lval_addr '=' expr_value tEOL   { DEBUG_WriteMemory( &$2, $4 );
 177                                              DEBUG_FreeExprMem(); }
 178
 179 pathname:
 180       tIDENTIFIER                    { $$ = $1; }
 181     | tPATH                          { $$ = $1; }
 182
 183 disassemble_command:
 184       tDISASSEMBLE tEOL              { DEBUG_Disassemble( NULL, NULL, 10 ); }
 185     | tDISASSEMBLE expr_addr tEOL    { DEBUG_Disassemble( & $2, NULL, 10 ); }
 186     | tDISASSEMBLE expr_addr ',' expr_addr tEOL { DEBUG_Disassemble( & $2, & $4, 0 ); }
 187
 188 list_command:
 189       tLIST tEOL               { DEBUG_List( NULL, NULL, 10 ); }
 190     | tLIST '-' tEOL           { DEBUG_List( NULL, NULL, -10 ); }
 191     | tLIST list_arg tEOL      { DEBUG_List( & $2, NULL, 10 ); }
 192     | tLIST ',' list_arg tEOL  { DEBUG_List( NULL, & $3, -10 ); }
 193     | tLIST list_arg ',' list_arg tEOL { DEBUG_List( & $2, & $4, 0 ); }
 194
 195 list_arg:
 196       tNUM                     { $$.sourcefile = NULL; $$.line = $1; }
 197     | pathname ':' tNUM        { $$.sourcefile = $1; $$.line = $3; }
 198     | tIDENTIFIER              { DEBUG_GetFuncInfo( & $$, NULL, $1); }
 199     | pathname ':' tIDENTIFIER { DEBUG_GetFuncInfo( & $$, $1, $3); }
 200     | '*' expr_addr            { DEBUG_FindNearestSymbol( & $2, FALSE, NULL,
 201                                                         0, & $$ );
 202                                              DEBUG_FreeExprMem(); }
 203
 204 x_command:
 205       tEXAM expr_addr tEOL     { DEBUG_ExamineMemory( &$2, 1, 'x');
 206                                              DEBUG_FreeExprMem(); }
 207     | tEXAM tFORMAT expr_addr tEOL  { DEBUG_ExamineMemory( &$3, $2>>8, $2&0xff );
 208                                              DEBUG_FreeExprMem(); }
 209
 210 print_command:
 211       tPRINT expr_addr tEOL    { DEBUG_Print( &$2, 1, 0, 0 );
 212                                              DEBUG_FreeExprMem(); }
 213     | tPRINT tFORMAT expr_addr tEOL { DEBUG_Print( &$3, $2 >> 8, $2 & 0xff, 0 );
 214                                              DEBUG_FreeExprMem(); }
 215
 216 break_command:
 217       tBREAK '*' expr_addr tEOL { DEBUG_AddBreakpoint( &$3 );
 218                                              DEBUG_FreeExprMem(); }
 219     | tBREAK tIDENTIFIER tEOL  { DBG_ADDR addr;
 220                                  if( DEBUG_GetSymbolValue($2, -1, &addr, TRUE) )
 221                                    {
 222                                      DEBUG_AddBreakpoint( &addr );
 223                                    }
 224                                  else
 225                                    {
 226                                      fprintf(stderr,"Unable to add breakpoint\n");
 227                                    }
 228                                 }
 229     | tBREAK tIDENTIFIER ':' tNUM tEOL  { DBG_ADDR addr;
 230                                  if( DEBUG_GetSymbolValue($2, $4, &addr, TRUE) )
 231                                    {
 232                                      DEBUG_AddBreakpoint( &addr );
 233                                    }
 234                                  else
 235                                    {
 236                                      fprintf(stderr,"Unable to add breakpoint\n");
 237                                    }
 238                                 }
 239     | tBREAK tNUM tEOL         { struct name_hash *nh;
 240                                  DBG_ADDR addr = { NULL,
 241                                                    CS_reg(&DEBUG_context),
 242                                                    EIP_reg(&DEBUG_context) };
 243                                  TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 244                                  if (ISV86(&DEBUG_context))
 245                                      addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 246                                  DBG_FIX_ADDR_SEG( &addr, CS_reg(&DEBUG_context) );
 247                                  GlobalUnlock16( GetCurrentTask() );
 248                                  DEBUG_FindNearestSymbol(&addr, TRUE,
 249                                                          &nh, 0, NULL);
 250                                  if( nh != NULL )
 251                                    {
 252                                      DEBUG_GetLineNumberAddr(nh,
 253                                                       $2, &addr, TRUE);
 254                                      DEBUG_AddBreakpoint( &addr );
 255                                    }
 256                                  else
 257                                    {
 258                                      fprintf(stderr,"Unable to add breakpoint\n");
 259                                    }
 260                                }
 261
 262     | tBREAK tEOL              { DBG_ADDR addr = { NULL,
 263                                                    CS_reg(&DEBUG_context),
 264                                                    EIP_reg(&DEBUG_context) };
 265                                  TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 266                                  if (ISV86(&DEBUG_context))
 267                                      addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 268                                  GlobalUnlock16( GetCurrentTask() );
 269                                  DEBUG_AddBreakpoint( &addr );
 270                                }
 271
 272 info_command:
 273       tINFO tBREAK tEOL         { DEBUG_InfoBreakpoints(); }
 274     | tINFO tCLASS expr_value tEOL    { CLASS_DumpClass( (CLASS *)$3 );
 275                                              DEBUG_FreeExprMem(); }
 276     | tINFO tSHARE tEOL         { DEBUG_InfoShare(); }
 277     | tINFO tMODULE expr_value tEOL   { NE_DumpModule( $3 );
 278                                              DEBUG_FreeExprMem(); }
 279     | tINFO tQUEUE expr_value tEOL    { QUEUE_DumpQueue( $3 );
 280                                              DEBUG_FreeExprMem(); }
 281     | tINFO tREGS tEOL          { DEBUG_InfoRegisters(); }
 282     | tINFO tSEGMENTS expr_value tEOL { LDT_Print( SELECTOR_TO_ENTRY($3), 1 );
 283                                              DEBUG_FreeExprMem(); }
 284     | tINFO tSEGMENTS tEOL      { LDT_Print( 0, -1 ); }
 285     | tINFO tSTACK tEOL         { DEBUG_InfoStack(); }
 286     | tINFO tMAPS tEOL          { VIRTUAL_Dump(); }
 287     | tINFO tWND expr_value tEOL      { WIN_DumpWindow( $3 );
 288                                              DEBUG_FreeExprMem(); }
 289     | tINFO tLOCAL tEOL         { DEBUG_InfoLocals(); }
 290     | tINFO tDISPLAY tEOL       { DEBUG_InfoDisplay(); }
 291
 292 walk_command:
 293       tWALK tCLASS tEOL         { CLASS_WalkClasses(); }
 294     | tWALK tMODULE tEOL        { NE_WalkModules(); }
 295     | tWALK tQUEUE tEOL         { QUEUE_WalkQueues(); }
 296     | tWALK tWND tEOL           { WIN_WalkWindows( 0, 0 ); }
 297     | tWALK tWND tNUM tEOL      { WIN_WalkWindows( $3, 0 ); }
 298
 299
 300 type_cast:
 301       '(' type_expr ')'         { $$ = $2; }
 302
 303 type_expr:
 304       type_expr '*'             { $$ = DEBUG_FindOrMakePointerType($1); }
 305     |  tINT                     { $$ = DEBUG_TypeCast(DT_BASIC, "int"); }
 306     | tCHAR                     { $$ = DEBUG_TypeCast(DT_BASIC, "char"); }
 307     | tLONG tINT                { $$ = DEBUG_TypeCast(DT_BASIC, "long int"); }
 308     | tUNSIGNED tINT            { $$ = DEBUG_TypeCast(DT_BASIC, "unsigned int"); }
 309     | tLONG tUNSIGNED tINT      { $$ = DEBUG_TypeCast(DT_BASIC, "long unsigned int"); }
 310     | tLONG tLONG tINT          { $$ = DEBUG_TypeCast(DT_BASIC, "long long int"); }
 311     | tLONG tLONG tUNSIGNED tINT { $$ = DEBUG_TypeCast(DT_BASIC, "long long unsigned int"); }
 312     | tSHORT tINT               { $$ = DEBUG_TypeCast(DT_BASIC, "short int"); }
 313     | tSHORT tUNSIGNED tINT     { $$ = DEBUG_TypeCast(DT_BASIC, "short unsigned int"); }
 314     | tSIGNED tCHAR             { $$ = DEBUG_TypeCast(DT_BASIC, "signed char"); }
 315     | tUNSIGNED tCHAR           { $$ = DEBUG_TypeCast(DT_BASIC, "unsigned char"); }
 316     | tFLOAT                    { $$ = DEBUG_TypeCast(DT_BASIC, "float"); }
 317     | tDOUBLE                   { $$ = DEBUG_TypeCast(DT_BASIC, "double"); }
 318     | tLONG tDOUBLE             { $$ = DEBUG_TypeCast(DT_BASIC, "long double"); }
 319     | tSTRUCT tIDENTIFIER       { $$ = DEBUG_TypeCast(DT_STRUCT, $2); }
 320     | tUNION tIDENTIFIER        { $$ = DEBUG_TypeCast(DT_STRUCT, $2); }
 321     | tENUM tIDENTIFIER         { $$ = DEBUG_TypeCast(DT_ENUM, $2); }
 322
 323 expr_addr:
 324     expr                         { $$ = DEBUG_EvalExpr($1); }
 325
 326 expr_value:
 327       expr        { DBG_ADDR addr  = DEBUG_EvalExpr($1);
 328                     $$ = addr.off ? *(unsigned int *) addr.off : 0; }
 329 /*
 330  * The expr rule builds an expression tree.  When we are done, we call
 331  * EvalExpr to evaluate the value of the expression.  The advantage of
 332  * the two-step approach is that it is possible to save expressions for
 333  * use in 'display' commands, and in conditional watchpoints.
 334  */
 335 expr:
 336       tNUM                       { $$ = DEBUG_ConstExpr($1); }
 337     | tSTRING                    { $$ = DEBUG_StringExpr($1); }
 338     | tREG                       { $$ = DEBUG_RegisterExpr($1); }
 339     | tIDENTIFIER                { $$ = DEBUG_SymbolExpr($1); }
 340     | expr OP_DRF tIDENTIFIER    { $$ = DEBUG_StructPExpr($1, $3); }
 341     | expr '.' tIDENTIFIER       { $$ = DEBUG_StructExpr($1, $3); }
 342     | tIDENTIFIER '(' ')'        { $$ = DEBUG_CallExpr($1, 0); }
 343     | tIDENTIFIER '(' expr ')'   { $$ = DEBUG_CallExpr($1, 1, $3); }
 344     | tIDENTIFIER '(' expr ',' expr ')'  { $$ = DEBUG_CallExpr($1, 2, $3,
 345                                                                $5); }
 346     | tIDENTIFIER '(' expr ',' expr ',' expr ')'         { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7); }
 347     | tIDENTIFIER '(' expr ',' expr ',' expr ',' expr ')'        { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7, $9); }
 348     | tIDENTIFIER '(' expr ',' expr ',' expr ',' expr ',' expr ')'       { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7, $9, $11); }
 349     | expr '[' expr ']'          { $$ = DEBUG_BinopExpr(EXP_OP_ARR, $1, $3); }
 350     | expr ':' expr              { $$ = DEBUG_BinopExpr(EXP_OP_SEG, $1, $3); }
 351     | expr OP_LOR expr           { $$ = DEBUG_BinopExpr(EXP_OP_LOR, $1, $3); }
 352     | expr OP_LAND expr          { $$ = DEBUG_BinopExpr(EXP_OP_LAND, $1, $3); }
 353     | expr '|' expr              { $$ = DEBUG_BinopExpr(EXP_OP_OR, $1, $3); }
 354     | expr '&' expr              { $$ = DEBUG_BinopExpr(EXP_OP_AND, $1, $3); }
 355     | expr '^' expr              { $$ = DEBUG_BinopExpr(EXP_OP_XOR, $1, $3); }
 356     | expr OP_EQ expr            { $$ = DEBUG_BinopExpr(EXP_OP_EQ, $1, $3); }
 357     | expr '>' expr              { $$ = DEBUG_BinopExpr(EXP_OP_GT, $1, $3); }
 358     | expr '<' expr              { $$ = DEBUG_BinopExpr(EXP_OP_LT, $1, $3); }
 359     | expr OP_GE expr            { $$ = DEBUG_BinopExpr(EXP_OP_GE, $1, $3); }
 360     | expr OP_LE expr            { $$ = DEBUG_BinopExpr(EXP_OP_LE, $1, $3); }
 361     | expr OP_NE expr            { $$ = DEBUG_BinopExpr(EXP_OP_NE, $1, $3); }
 362     | expr OP_SHL expr           { $$ = DEBUG_BinopExpr(EXP_OP_SHL, $1, $3); }
 363     | expr OP_SHR expr           { $$ = DEBUG_BinopExpr(EXP_OP_SHR, $1, $3); }
 364     | expr '+' expr              { $$ = DEBUG_BinopExpr(EXP_OP_ADD, $1, $3); }
 365     | expr '-' expr              { $$ = DEBUG_BinopExpr(EXP_OP_SUB, $1, $3); }
 366     | expr '*' expr              { $$ = DEBUG_BinopExpr(EXP_OP_MUL, $1, $3); }
 367     | expr '/' expr              { $$ = DEBUG_BinopExpr(EXP_OP_DIV, $1, $3); }
 368     | expr '%' expr              { $$ = DEBUG_BinopExpr(EXP_OP_REM, $1, $3); }
 369     | '-' expr %prec OP_SIGN     { $$ = DEBUG_UnopExpr(EXP_OP_NEG, $2); }
 370     | '+' expr %prec OP_SIGN     { $$ = $2; }
 371     | '!' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_NOT, $2); }
 372     | '~' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_LNOT, $2); }
 373     | '(' expr ')'               { $$ = $2; }
 374     | '*' expr %prec OP_DEREF    { $$ = DEBUG_UnopExpr(EXP_OP_DEREF, $2); }
 375     | '&' expr %prec OP_DEREF    { $$ = DEBUG_UnopExpr(EXP_OP_ADDR, $2); }
 376     | type_cast expr %prec OP_DEREF { $$ = DEBUG_TypeCastExpr($1, $2); }
 377
 378 /*
 379  * The lvalue rule builds an expression tree.  This is a limited form
 380  * of expression that is suitable to be used as an lvalue.
 381  */
 382 lval_addr:
 383     lval                         { $$ = DEBUG_EvalExpr($1); }
 384
 385 lval:
 386       lvalue                     { $$ = $1; }
 387     | '*' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_FORCE_DEREF, $2); }
 388
 389 lvalue:
 390       tNUM                       { $$ = DEBUG_ConstExpr($1); }
 391     | tREG                       { $$ = DEBUG_RegisterExpr($1); }
 392     | tIDENTIFIER                { $$ = DEBUG_SymbolExpr($1); }
 393     | lvalue OP_DRF tIDENTIFIER  { $$ = DEBUG_StructPExpr($1, $3); }
 394     | lvalue '.' tIDENTIFIER     { $$ = DEBUG_StructExpr($1, $3); }
 395     | lvalue '[' expr ']'        { $$ = DEBUG_BinopExpr(EXP_OP_ARR, $1, $3); }
 396
 397 %%
 398
 399 void
 400 issue_prompt(){
 401 #ifdef DONT_USE_READLINE
 402         fprintf(stderr,"Wine-dbg>");
 403 #endif
 404 }
 405
 406 void mode_command(int newmode)
 407 {
 408     if ((newmode == 16) || (newmode == 32)) dbg_mode = newmode;
 409     else fprintf(stderr,"Invalid mode (use 16 or 32)\n");
 410 }
 411
 412
 413 /***********************************************************************
 414  *           DEBUG_Main
 415  *
 416  * Debugger main loop.
 417  */
 418 static void DEBUG_Main( int signal )
 419 {
 420     static int loaded_symbols = 0;
 421     static BOOL in_debugger = FALSE;
 422     char SymbolTableFile[256];
 423     int newmode;
 424     BOOL ret_ok;
 425 #ifdef YYDEBUG
 426     yydebug = 0;
 427 #endif
 428
 429     if (in_debugger)
 430     {
 431         fprintf( stderr, "Segmentation fault inside debugger, exiting.\n" );
 432         exit(1);
 433     }
 434     in_debugger = TRUE;
 435     yyin = stdin;
 436
 437     DEBUG_SetBreakpoints( FALSE );
 438
 439     if (!loaded_symbols)
 440     {
 441         loaded_symbols++;
 442
 443         /*
 444          * Initialize the type handling stuff.
 445          */
 446         DEBUG_InitTypes();
 447
 448         /*
 449          * In some cases we can read the stabs information directly
 450          * from the executable.  If this is the case, we don't need
 451          * to bother with trying to read a symbol file, as the stabs
 452          * also have line number and local variable information.
 453          * As long as gcc is used for the compiler, stabs will
 454          * be the default.  On SVr4, DWARF could be used, but we
 455          * don't grok that yet, and in this case we fall back to using
 456          * the wine.sym file.
 457          */
 458         if( DEBUG_ReadExecutableDbgInfo() == FALSE )
 459         {
 460             char *symfilename = "wine.sym";
 461             struct stat statbuf;
 462             if (-1 == stat(symfilename, &statbuf) )
 463                 symfilename = LIBDIR "wine.sym";
 464
 465             PROFILE_GetWineIniString( "wine", "SymbolTableFile", symfilename,
 466                                      SymbolTableFile, sizeof(SymbolTableFile));
 467             DEBUG_ReadSymbolTable( SymbolTableFile );
 468         }
 469
 470         DEBUG_LoadEntryPoints();
 471         DEBUG_ProcessDeferredDebug();
 472     }
 473
 474 #if 0
 475     fprintf(stderr, "Entering debugger  PC=%x, mode=%d, count=%d\n",
 476             EIP_reg(&DEBUG_context),
 477             dbg_exec_mode, dbg_exec_count);
 478
 479     sleep(1);
 480 #endif
 481
 482     if ((signal != SIGTRAP) || !DEBUG_ShouldContinue( dbg_exec_mode,
 483                                                       &dbg_exec_count ))
 484     {
 485         DBG_ADDR addr;
 486         TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 487
 488         addr.seg = CS_reg(&DEBUG_context);
 489         addr.off = EIP_reg(&DEBUG_context);
 490         if (ISV86(&DEBUG_context)) addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 491         addr.type = NULL;
 492         DBG_FIX_ADDR_SEG( &addr, 0 );
 493
 494         GlobalUnlock16( GetCurrentTask() );
 495
 496         /* Put the display in a correct state */
 497
 498         TSXUngrabServer( display );
 499         TSXFlush( display );
 500
 501         newmode = ISV86(&DEBUG_context) ? 16 : IS_SELECTOR_32BIT(addr.seg) ? 32 : 16;
 502         if (newmode != dbg_mode)
 503             fprintf(stderr,"In %d bit mode.\n", dbg_mode = newmode);
 504
 505         PROCESS_SuspendOtherThreads();
 506
 507         DEBUG_DoDisplay();
 508
 509         if (signal != SIGTRAP)  /* This is a real crash, dump some info */
 510         {
 511             DEBUG_InfoRegisters();
 512             DEBUG_InfoStack();
 513             if (dbg_mode == 16)
 514             {
 515                 LDT_Print( SELECTOR_TO_ENTRY(DS_reg(&DEBUG_context)), 1 );
 516                 if (ES_reg(&DEBUG_context) != DS_reg(&DEBUG_context))
 517                     LDT_Print( SELECTOR_TO_ENTRY(ES_reg(&DEBUG_context)), 1 );
 518             }
 519             DEBUG_BackTrace();
 520         }
 521         else
 522         {
 523           /*
 524            * Do a quiet backtrace so that we have an idea of what the situation
 525            * is WRT the source files.
 526            */
 527             DEBUG_SilentBackTrace();
 528         }
 529
 530         if ((signal != SIGTRAP) ||
 531             (dbg_exec_mode == EXEC_STEPI_OVER) ||
 532             (dbg_exec_mode == EXEC_STEPI_INSTR))
 533         {
 534             /* Show where we crashed */
 535             curr_frame = 0;
 536             DEBUG_PrintAddress( &addr, dbg_mode, TRUE );
 537             fprintf(stderr,":  ");
 538             if (DBG_CHECK_READ_PTR( &addr, 1 ))
 539               {
 540                 DEBUG_Disasm( &addr, TRUE );
 541                 fprintf(stderr,"\n");
 542               }
 543         }
 544
 545         ret_ok = 0;
 546         do
 547         {
 548             issue_prompt();
 549             yyparse();
 550             flush_symbols();
 551             addr.seg = CS_reg(&DEBUG_context) | (addr.seg&0xffff0000);
 552             addr.off = EIP_reg(&DEBUG_context);
 553             DBG_FIX_ADDR_SEG( &addr, 0 );
 554             ret_ok = DEBUG_ValidateRegisters();
 555             if (ret_ok) ret_ok = DBG_CHECK_READ_PTR( &addr, 1 );
 556         } while (!ret_ok);
 557     }
 558
 559     dbg_exec_mode = DEBUG_RestartExecution( dbg_exec_mode, dbg_exec_count );
 560     /*
 561      * This will have gotten absorbed into the breakpoint info
 562      * if it was used.  Otherwise it would have been ignored.
 563      * In any case, we don't mess with it any more.
 564      */
 565     if( dbg_exec_mode == EXEC_CONT )
 566       {
 567         dbg_exec_count = 0;
 568         PROCESS_ResumeOtherThreads();
 569       }
 570
 571     in_debugger = FALSE;
 572 }
 573
 574
 575
 576 /***********************************************************************
 577  *           DebugBreak   (KERNEL.203) (KERNEL32.181)
 578  */
 579 void DebugBreak16( CONTEXT *regs )
 580 {
 581     char module[10];
 582     if (!GetModuleName16( GetCurrentTask(), module, sizeof(module) ))
 583         strcpy( module, "???" );
 584     fprintf( stderr, "%s called DebugBreak\n", module );
 585     DEBUG_context = *regs;
 586     DEBUG_Main( SIGTRAP );
 587 }
 588
 589
 590 void ctx_debug( int signal, CONTEXT *regs )
 591 {
 592     DEBUG_context = *regs;
 593     DEBUG_Main( signal );
 594     *regs = DEBUG_context;
 595 }
 596
 597 void wine_debug( int signal, SIGCONTEXT *regs )
 598 {
 599 #if 0
 600     DWORD *stack = (DWORD *)ESP_sig(regs);
 601     *(--stack) = 0;
 602     *(--stack) = 0;
 603     *(--stack) = EH_NONCONTINUABLE;
 604     *(--stack) = EXCEPTION_ACCESS_VIOLATION;
 605     *(--stack) = EIP_sig(regs);
 606     ESP_sig(regs) = (DWORD)stack;
 607     EIP_sig(regs) = (DWORD)RaiseException;
 608 #else
 609     DEBUG_SetSigContext( regs );
 610     DEBUG_Main( signal );
 611     DEBUG_GetSigContext( regs );
 612 #endif
 613 }
 614
 615 int yyerror(char * s)
 616 {
 617         fprintf(stderr,"%s\n", s);
 618         return 0;
 619 }