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 "ts_xlib.h"
  10 #include "x11drv.h"
  11
  12 #include <stdio.h>
  13 #include <signal.h>
  14 #include <sys/stat.h>
  15 #include <unistd.h>
  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 "win.h"
  23 #include "winnt.h"
  24 #include "debugger.h"
  25 #include "neexe.h"
  26 #include "process.h"
  27 #include "main.h"
  28 #include "expr.h"
  29
  30 extern FILE * yyin;
  31 unsigned int dbg_mode = 0;
  32 int curr_frame = 0;
  33
  34 static enum exec_mode dbg_exec_mode = EXEC_CONT;
  35 static int dbg_exec_count = 0;
  36
  37 void issue_prompt(void);
  38 void mode_command(int);
  39 void flush_symbols(void);
  40 int yylex(void);
  41 int yyerror(char *);
  42
  43 extern void VIRTUAL_Dump(void);  /* memory/virtual.c */
  44
  45 %}
  46
  47 %union
  48 {
  49     DBG_ADDR         address;
  50     enum debug_regs  reg;
  51     char *           string;
  52     int              integer;
  53     struct list_id   listing;
  54     struct expr *    expression;
  55     struct datatype * type;
  56 }
  57
  58 %token tCONT tSTEP tLIST tNEXT tQUIT tHELP tBACKTRACE tINFO tWALK tUP tDOWN
  59 %token tENABLE tDISABLE tBREAK tDELETE tSET tMODE tPRINT tEXAM tABORT tDEBUGMSG
  60 %token tCLASS tMAPS tMODULE tSTACK tSEGMENTS tREGS tWND tQUEUE tLOCAL
  61 %token tEOL tSTRING tDEBUGSTR
  62 %token tFRAME tSHARE tCOND tDISPLAY tUNDISPLAY tDISASSEMBLE
  63 %token tSTEPI tNEXTI tFINISH tSHOW tDIR
  64 %token <string> tPATH
  65 %token <string> tIDENTIFIER tSTRING tDEBUGSTR
  66 %token <integer> tNUM tFORMAT
  67 %token <reg> tREG
  68 %token tSYMBOLFILE
  69
  70 %token tCHAR tSHORT tINT tLONG tFLOAT tDOUBLE tUNSIGNED tSIGNED
  71 %token tSTRUCT tUNION tENUM
  72
  73 /* %left ',' */
  74 /* %left '=' OP_OR_EQUAL OP_XOR_EQUAL OP_AND_EQUAL OP_SHL_EQUAL \
  75          OP_SHR_EQUAL OP_PLUS_EQUAL OP_MINUS_EQUAL \
  76          OP_TIMES_EQUAL OP_DIVIDE_EQUAL OP_MODULO_EQUAL */
  77 /* %left OP_COND */ /* ... ? ... : ... */
  78 %left OP_LOR
  79 %left OP_LAND
  80 %left '|'
  81 %left '^'
  82 %left '&'
  83 %left OP_EQ OP_NE
  84 %left '<' '>' OP_LE OP_GE
  85 %left OP_SHL OP_SHR
  86 %left '+' '-'
  87 %left '*' '/' '%'
  88 %left OP_SIGN '!' '~' OP_DEREF /* OP_INC OP_DEC OP_ADDR */
  89 %left '.' '[' OP_DRF
  90 %nonassoc ':'
  91
  92 %type <expression> expr lval lvalue
  93 %type <type> type_cast type_expr
  94 %type <address> expr_addr lval_addr
  95 %type <integer> expr_value
  96 %type <string> pathname
  97
  98 %type <listing> list_arg
  99
 100 %%
 101
 102 input: line                    { issue_prompt(); }
 103     | input line               { issue_prompt(); }
 104
 105 line: command
 106     | tEOL
 107     | error tEOL               { yyerrok; }
 108
 109 command:
 110       tQUIT tEOL               { exit(0); }
 111     | tHELP tEOL               { DEBUG_Help(); }
 112     | tHELP tINFO tEOL         { DEBUG_HelpInfo(); }
 113     | tCONT tEOL               { dbg_exec_count = 1;
 114                                  dbg_exec_mode = EXEC_CONT; return 0; }
 115     | tCONT tNUM tEOL          { dbg_exec_count = $2;
 116                                  dbg_exec_mode = EXEC_CONT; return 0; }
 117     | tSTEP tEOL               { dbg_exec_count = 1;
 118                                  dbg_exec_mode = EXEC_STEP_INSTR; return 0; }
 119     | tNEXT tEOL               { dbg_exec_count = 1;
 120                                  dbg_exec_mode = EXEC_STEP_OVER; return 0; }
 121     | tSTEP tNUM tEOL          { dbg_exec_count = $2;
 122                                  dbg_exec_mode = EXEC_STEP_INSTR; return 0; }
 123     | tNEXT tNUM tEOL          { dbg_exec_count = $2;
 124                                  dbg_exec_mode = EXEC_STEP_OVER; return 0; }
 125     | tSTEPI tEOL              { dbg_exec_count = 1;
 126                                  dbg_exec_mode = EXEC_STEPI_INSTR; return 0; }
 127     | tNEXTI tEOL              { dbg_exec_count = 1;
 128                                  dbg_exec_mode = EXEC_STEPI_OVER; return 0; }
 129     | tSTEPI tNUM tEOL         { dbg_exec_count = $2;
 130                                  dbg_exec_mode = EXEC_STEPI_INSTR; return 0; }
 131     | tNEXTI tNUM tEOL         { dbg_exec_count = $2;
 132                                  dbg_exec_mode = EXEC_STEPI_OVER; return 0; }
 133     | tABORT tEOL              { kill(getpid(), SIGABRT); }
 134     | tMODE tNUM tEOL          { mode_command($2); }
 135     | tENABLE tNUM tEOL        { DEBUG_EnableBreakpoint( $2, TRUE ); }
 136     | tDISABLE tNUM tEOL       { DEBUG_EnableBreakpoint( $2, FALSE ); }
 137     | tDELETE tBREAK tNUM tEOL { DEBUG_DelBreakpoint( $3 ); }
 138     | tBACKTRACE tEOL          { DEBUG_BackTrace(); }
 139     | tUP tEOL                 { DEBUG_SetFrame( curr_frame + 1 );  }
 140     | tUP tNUM tEOL            { DEBUG_SetFrame( curr_frame + $2 ); }
 141     | tDOWN tEOL               { DEBUG_SetFrame( curr_frame - 1 );  }
 142     | tDOWN tNUM tEOL          { DEBUG_SetFrame( curr_frame - $2 ); }
 143     | tFRAME tNUM tEOL         { DEBUG_SetFrame( $2 ); }
 144     | tFINISH tEOL             { dbg_exec_count = 0;
 145                                  dbg_exec_mode = EXEC_FINISH; return 0; }
 146     | tSHOW tDIR tEOL          { DEBUG_ShowDir(); }
 147     | tDIR pathname tEOL       { DEBUG_AddPath( $2 ); }
 148     | tDIR tEOL                { DEBUG_NukePath(); }
 149     | tDISPLAY tEOL            { DEBUG_InfoDisplay(); }
 150     | tDISPLAY expr tEOL       { DEBUG_AddDisplay($2, 1, 0); }
 151     | tDISPLAY tFORMAT expr tEOL { DEBUG_AddDisplay($3, $2 >> 8, $2 & 0xff); }
 152     | tDELETE tDISPLAY tNUM tEOL { DEBUG_DelDisplay( $3 ); }
 153     | tDELETE tDISPLAY tEOL    { DEBUG_DelDisplay( -1 ); }
 154     | tUNDISPLAY tNUM tEOL     { DEBUG_DelDisplay( $2 ); }
 155     | tUNDISPLAY tEOL          { DEBUG_DelDisplay( -1 ); }
 156     | tCOND tNUM tEOL          { DEBUG_AddBPCondition($2, NULL); }
 157     | tCOND tNUM expr tEOL     { DEBUG_AddBPCondition($2, $3); }
 158     | tDEBUGMSG tDEBUGSTR tEOL { MAIN_ParseDebugOptions($2); }
 159     | tSYMBOLFILE pathname tEOL{ DEBUG_ReadSymbolTable($2); }
 160     | list_command
 161     | disassemble_command
 162     | set_command
 163     | x_command
 164     | print_command
 165     | break_command
 166     | info_command
 167     | walk_command
 168
 169 set_command:
 170       tSET tREG '=' expr_value tEOL        { DEBUG_SetRegister( $2, $4 );
 171                                              DEBUG_FreeExprMem(); }
 172     | tSET lval_addr '=' expr_value tEOL   { DEBUG_WriteMemory( &$2, $4 );
 173                                              DEBUG_FreeExprMem(); }
 174
 175 pathname:
 176       tIDENTIFIER                    { $$ = $1; }
 177     | tPATH                          { $$ = $1; }
 178
 179 disassemble_command:
 180       tDISASSEMBLE tEOL              { DEBUG_Disassemble( NULL, NULL, 10 ); }
 181     | tDISASSEMBLE expr_addr tEOL    { DEBUG_Disassemble( & $2, NULL, 10 ); }
 182     | tDISASSEMBLE expr_addr ',' expr_addr tEOL { DEBUG_Disassemble( & $2, & $4, 0 ); }
 183
 184 list_command:
 185       tLIST tEOL               { DEBUG_List( NULL, NULL, 10 ); }
 186     | tLIST '-' tEOL           { DEBUG_List( NULL, NULL, -10 ); }
 187     | tLIST list_arg tEOL      { DEBUG_List( & $2, NULL, 10 ); }
 188     | tLIST ',' list_arg tEOL  { DEBUG_List( NULL, & $3, -10 ); }
 189     | tLIST list_arg ',' list_arg tEOL { DEBUG_List( & $2, & $4, 0 ); }
 190
 191 list_arg:
 192       tNUM                     { $$.sourcefile = NULL; $$.line = $1; }
 193     | pathname ':' tNUM        { $$.sourcefile = $1; $$.line = $3; }
 194     | tIDENTIFIER              { DEBUG_GetFuncInfo( & $$, NULL, $1); }
 195     | pathname ':' tIDENTIFIER { DEBUG_GetFuncInfo( & $$, $1, $3); }
 196     | '*' expr_addr            { DEBUG_FindNearestSymbol( & $2, FALSE, NULL,
 197                                                         0, & $$ );
 198                                              DEBUG_FreeExprMem(); }
 199
 200 x_command:
 201       tEXAM expr_addr tEOL     { DEBUG_ExamineMemory( &$2, 1, 'x');
 202                                              DEBUG_FreeExprMem(); }
 203     | tEXAM tFORMAT expr_addr tEOL  { DEBUG_ExamineMemory( &$3, $2>>8, $2&0xff );
 204                                              DEBUG_FreeExprMem(); }
 205
 206 print_command:
 207       tPRINT expr_addr tEOL    { DEBUG_Print( &$2, 1, 0, 0 );
 208                                              DEBUG_FreeExprMem(); }
 209     | tPRINT tFORMAT expr_addr tEOL { DEBUG_Print( &$3, $2 >> 8, $2 & 0xff, 0 );
 210                                              DEBUG_FreeExprMem(); }
 211
 212 break_command:
 213       tBREAK '*' expr_addr tEOL { DEBUG_AddBreakpoint( &$3 );
 214                                              DEBUG_FreeExprMem(); }
 215     | tBREAK tIDENTIFIER tEOL  { DBG_ADDR addr;
 216                                  if( DEBUG_GetSymbolValue($2, -1, &addr, TRUE) )
 217                                    {
 218                                      DEBUG_AddBreakpoint( &addr );
 219                                    }
 220                                  else
 221                                    {
 222                                      fprintf(stderr,"Unable to add breakpoint\n");
 223                                    }
 224                                 }
 225     | tBREAK tIDENTIFIER ':' tNUM tEOL  { DBG_ADDR addr;
 226                                  if( DEBUG_GetSymbolValue($2, $4, &addr, TRUE) )
 227                                    {
 228                                      DEBUG_AddBreakpoint( &addr );
 229                                    }
 230                                  else
 231                                    {
 232                                      fprintf(stderr,"Unable to add breakpoint\n");
 233                                    }
 234                                 }
 235     | tBREAK tNUM tEOL         { struct name_hash *nh;
 236                                  DBG_ADDR addr = { NULL,
 237                                                    CS_reg(&DEBUG_context),
 238                                                    EIP_reg(&DEBUG_context) };
 239                                  TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 240                                  if (ISV86(&DEBUG_context))
 241                                      addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 242                                  DBG_FIX_ADDR_SEG( &addr, CS_reg(&DEBUG_context) );
 243                                  GlobalUnlock16( GetCurrentTask() );
 244                                  DEBUG_FindNearestSymbol(&addr, TRUE,
 245                                                          &nh, 0, NULL);
 246                                  if( nh != NULL )
 247                                    {
 248                                      DEBUG_GetLineNumberAddr(nh,
 249                                                       $2, &addr, TRUE);
 250                                      DEBUG_AddBreakpoint( &addr );
 251                                    }
 252                                  else
 253                                    {
 254                                      fprintf(stderr,"Unable to add breakpoint\n");
 255                                    }
 256                                }
 257
 258     | tBREAK tEOL              { DBG_ADDR addr = { NULL,
 259                                                    CS_reg(&DEBUG_context),
 260                                                    EIP_reg(&DEBUG_context) };
 261                                  TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 262                                  if (ISV86(&DEBUG_context))
 263                                      addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 264                                  GlobalUnlock16( GetCurrentTask() );
 265                                  DEBUG_AddBreakpoint( &addr );
 266                                }
 267
 268 info_command:
 269       tINFO tBREAK tEOL         { DEBUG_InfoBreakpoints(); }
 270     | tINFO tCLASS expr_value tEOL    { CLASS_DumpClass( (CLASS *)$3 );
 271                                              DEBUG_FreeExprMem(); }
 272     | tINFO tSHARE tEOL         { DEBUG_InfoShare(); }
 273     | tINFO tMODULE expr_value tEOL   { NE_DumpModule( $3 );
 274                                              DEBUG_FreeExprMem(); }
 275     | tINFO tQUEUE expr_value tEOL    { QUEUE_DumpQueue( $3 );
 276                                              DEBUG_FreeExprMem(); }
 277     | tINFO tREGS tEOL          { DEBUG_InfoRegisters(); }
 278     | tINFO tSEGMENTS expr_value tEOL { LDT_Print( SELECTOR_TO_ENTRY($3), 1 );
 279                                              DEBUG_FreeExprMem(); }
 280     | tINFO tSEGMENTS tEOL      { LDT_Print( 0, -1 ); }
 281     | tINFO tSTACK tEOL         { DEBUG_InfoStack(); }
 282     | tINFO tMAPS tEOL          { VIRTUAL_Dump(); }
 283     | tINFO tWND expr_value tEOL      { WIN_DumpWindow( $3 );
 284                                              DEBUG_FreeExprMem(); }
 285     | tINFO tLOCAL tEOL         { DEBUG_InfoLocals(); }
 286     | tINFO tDISPLAY tEOL       { DEBUG_InfoDisplay(); }
 287
 288 walk_command:
 289       tWALK tCLASS tEOL         { CLASS_WalkClasses(); }
 290     | tWALK tMODULE tEOL        { NE_WalkModules(); }
 291     | tWALK tQUEUE tEOL         { QUEUE_WalkQueues(); }
 292     | tWALK tWND tEOL           { WIN_WalkWindows( 0, 0 ); }
 293     | tWALK tWND tNUM tEOL      { WIN_WalkWindows( $3, 0 ); }
 294
 295
 296 type_cast:
 297       '(' type_expr ')'         { $$ = $2; }
 298
 299 type_expr:
 300       type_expr '*'             { $$ = DEBUG_FindOrMakePointerType($1); }
 301     |  tINT                     { $$ = DEBUG_TypeCast(DT_BASIC, "int"); }
 302     | tCHAR                     { $$ = DEBUG_TypeCast(DT_BASIC, "char"); }
 303     | tLONG tINT                { $$ = DEBUG_TypeCast(DT_BASIC, "long int"); }
 304     | tUNSIGNED tINT            { $$ = DEBUG_TypeCast(DT_BASIC, "unsigned int"); }
 305     | tLONG tUNSIGNED tINT      { $$ = DEBUG_TypeCast(DT_BASIC, "long unsigned int"); }
 306     | tLONG tLONG tINT          { $$ = DEBUG_TypeCast(DT_BASIC, "long long int"); }
 307     | tLONG tLONG tUNSIGNED tINT { $$ = DEBUG_TypeCast(DT_BASIC, "long long unsigned int"); }
 308     | tSHORT tINT               { $$ = DEBUG_TypeCast(DT_BASIC, "short int"); }
 309     | tSHORT tUNSIGNED tINT     { $$ = DEBUG_TypeCast(DT_BASIC, "short unsigned int"); }
 310     | tSIGNED tCHAR             { $$ = DEBUG_TypeCast(DT_BASIC, "signed char"); }
 311     | tUNSIGNED tCHAR           { $$ = DEBUG_TypeCast(DT_BASIC, "unsigned char"); }
 312     | tFLOAT                    { $$ = DEBUG_TypeCast(DT_BASIC, "float"); }
 313     | tDOUBLE                   { $$ = DEBUG_TypeCast(DT_BASIC, "double"); }
 314     | tLONG tDOUBLE             { $$ = DEBUG_TypeCast(DT_BASIC, "long double"); }
 315     | tSTRUCT tIDENTIFIER       { $$ = DEBUG_TypeCast(DT_STRUCT, $2); }
 316     | tUNION tIDENTIFIER        { $$ = DEBUG_TypeCast(DT_STRUCT, $2); }
 317     | tENUM tIDENTIFIER         { $$ = DEBUG_TypeCast(DT_ENUM, $2); }
 318
 319 expr_addr:
 320     expr                         { $$ = DEBUG_EvalExpr($1); }
 321
 322 expr_value:
 323       expr        { DBG_ADDR addr  = DEBUG_EvalExpr($1);
 324                     $$ = addr.off ? *(unsigned int *) addr.off : 0; }
 325 /*
 326  * The expr rule builds an expression tree.  When we are done, we call
 327  * EvalExpr to evaluate the value of the expression.  The advantage of
 328  * the two-step approach is that it is possible to save expressions for
 329  * use in 'display' commands, and in conditional watchpoints.
 330  */
 331 expr:
 332       tNUM                       { $$ = DEBUG_ConstExpr($1); }
 333     | tSTRING                    { $$ = DEBUG_StringExpr($1); }
 334     | tREG                       { $$ = DEBUG_RegisterExpr($1); }
 335     | tIDENTIFIER                { $$ = DEBUG_SymbolExpr($1); }
 336     | expr OP_DRF tIDENTIFIER    { $$ = DEBUG_StructPExpr($1, $3); }
 337     | expr '.' tIDENTIFIER       { $$ = DEBUG_StructExpr($1, $3); }
 338     | tIDENTIFIER '(' ')'        { $$ = DEBUG_CallExpr($1, 0); }
 339     | tIDENTIFIER '(' expr ')'   { $$ = DEBUG_CallExpr($1, 1, $3); }
 340     | tIDENTIFIER '(' expr ',' expr ')'  { $$ = DEBUG_CallExpr($1, 2, $3,
 341                                                                $5); }
 342     | tIDENTIFIER '(' expr ',' expr ',' expr ')'         { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7); }
 343     | tIDENTIFIER '(' expr ',' expr ',' expr ',' expr ')'        { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7, $9); }
 344     | tIDENTIFIER '(' expr ',' expr ',' expr ',' expr ',' expr ')'       { $$ = DEBUG_CallExpr($1, 3, $3, $5, $7, $9, $11); }
 345     | expr '[' expr ']'          { $$ = DEBUG_BinopExpr(EXP_OP_ARR, $1, $3); }
 346     | expr ':' expr              { $$ = DEBUG_BinopExpr(EXP_OP_SEG, $1, $3); }
 347     | expr OP_LOR expr           { $$ = DEBUG_BinopExpr(EXP_OP_LOR, $1, $3); }
 348     | expr OP_LAND expr          { $$ = DEBUG_BinopExpr(EXP_OP_LAND, $1, $3); }
 349     | expr '|' expr              { $$ = DEBUG_BinopExpr(EXP_OP_OR, $1, $3); }
 350     | expr '&' expr              { $$ = DEBUG_BinopExpr(EXP_OP_AND, $1, $3); }
 351     | expr '^' expr              { $$ = DEBUG_BinopExpr(EXP_OP_XOR, $1, $3); }
 352     | expr OP_EQ expr            { $$ = DEBUG_BinopExpr(EXP_OP_EQ, $1, $3); }
 353     | expr '>' expr              { $$ = DEBUG_BinopExpr(EXP_OP_GT, $1, $3); }
 354     | expr '<' expr              { $$ = DEBUG_BinopExpr(EXP_OP_LT, $1, $3); }
 355     | expr OP_GE expr            { $$ = DEBUG_BinopExpr(EXP_OP_GE, $1, $3); }
 356     | expr OP_LE expr            { $$ = DEBUG_BinopExpr(EXP_OP_LE, $1, $3); }
 357     | expr OP_NE expr            { $$ = DEBUG_BinopExpr(EXP_OP_NE, $1, $3); }
 358     | expr OP_SHL expr           { $$ = DEBUG_BinopExpr(EXP_OP_SHL, $1, $3); }
 359     | expr OP_SHR expr           { $$ = DEBUG_BinopExpr(EXP_OP_SHR, $1, $3); }
 360     | expr '+' expr              { $$ = DEBUG_BinopExpr(EXP_OP_ADD, $1, $3); }
 361     | expr '-' expr              { $$ = DEBUG_BinopExpr(EXP_OP_SUB, $1, $3); }
 362     | expr '*' expr              { $$ = DEBUG_BinopExpr(EXP_OP_MUL, $1, $3); }
 363     | expr '/' expr              { $$ = DEBUG_BinopExpr(EXP_OP_DIV, $1, $3); }
 364     | expr '%' expr              { $$ = DEBUG_BinopExpr(EXP_OP_REM, $1, $3); }
 365     | '-' expr %prec OP_SIGN     { $$ = DEBUG_UnopExpr(EXP_OP_NEG, $2); }
 366     | '+' expr %prec OP_SIGN     { $$ = $2; }
 367     | '!' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_NOT, $2); }
 368     | '~' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_LNOT, $2); }
 369     | '(' expr ')'               { $$ = $2; }
 370     | '*' expr %prec OP_DEREF    { $$ = DEBUG_UnopExpr(EXP_OP_DEREF, $2); }
 371     | '&' expr %prec OP_DEREF    { $$ = DEBUG_UnopExpr(EXP_OP_ADDR, $2); }
 372     | type_cast expr %prec OP_DEREF { $$ = DEBUG_TypeCastExpr($1, $2); }
 373
 374 /*
 375  * The lvalue rule builds an expression tree.  This is a limited form
 376  * of expression that is suitable to be used as an lvalue.
 377  */
 378 lval_addr:
 379     lval                         { $$ = DEBUG_EvalExpr($1); }
 380
 381 lval:
 382       lvalue                     { $$ = $1; }
 383     | '*' expr                   { $$ = DEBUG_UnopExpr(EXP_OP_FORCE_DEREF, $2); }
 384
 385 lvalue:
 386       tNUM                       { $$ = DEBUG_ConstExpr($1); }
 387     | tREG                       { $$ = DEBUG_RegisterExpr($1); }
 388     | tIDENTIFIER                { $$ = DEBUG_SymbolExpr($1); }
 389     | lvalue OP_DRF tIDENTIFIER  { $$ = DEBUG_StructPExpr($1, $3); }
 390     | lvalue '.' tIDENTIFIER     { $$ = DEBUG_StructExpr($1, $3); }
 391     | lvalue '[' expr ']'        { $$ = DEBUG_BinopExpr(EXP_OP_ARR, $1, $3); }
 392
 393 %%
 394
 395 void
 396 issue_prompt(){
 397 #ifdef DONT_USE_READLINE
 398         fprintf(stderr,"Wine-dbg>");
 399 #endif
 400 }
 401
 402 void mode_command(int newmode)
 403 {
 404     if ((newmode == 16) || (newmode == 32)) dbg_mode = newmode;
 405     else fprintf(stderr,"Invalid mode (use 16 or 32)\n");
 406 }
 407
 408
 409 /***********************************************************************
 410  *           DEBUG_Main
 411  *
 412  * Debugger main loop.
 413  */
 414 static void DEBUG_Main( int signal )
 415 {
 416     static int loaded_symbols = 0;
 417     static BOOL32 in_debugger = FALSE;
 418     char SymbolTableFile[256];
 419     int newmode;
 420     BOOL32 ret_ok;
 421 #ifdef YYDEBUG
 422     yydebug = 0;
 423 #endif
 424
 425     if (in_debugger)
 426     {
 427         fprintf( stderr, "Segmentation fault inside debugger, exiting.\n" );
 428         exit(1);
 429     }
 430     in_debugger = TRUE;
 431     yyin = stdin;
 432
 433     DEBUG_SetBreakpoints( FALSE );
 434
 435     if (!loaded_symbols)
 436     {
 437         loaded_symbols++;
 438
 439         /*
 440          * Initialize the type handling stuff.
 441          */
 442         DEBUG_InitTypes();
 443
 444         /*
 445          * In some cases we can read the stabs information directly
 446          * from the executable.  If this is the case, we don't need
 447          * to bother with trying to read a symbol file, as the stabs
 448          * also have line number and local variable information.
 449          * As long as gcc is used for the compiler, stabs will
 450          * be the default.  On SVr4, DWARF could be used, but we
 451          * don't grok that yet, and in this case we fall back to using
 452          * the wine.sym file.
 453          */
 454         if( DEBUG_ReadExecutableDbgInfo() == FALSE )
 455         {
 456             char *symfilename = "wine.sym";
 457             struct stat statbuf;
 458             if (-1 == stat(symfilename, &statbuf) )
 459                 symfilename = LIBDIR "wine.sym";
 460
 461             PROFILE_GetWineIniString( "wine", "SymbolTableFile", symfilename,
 462                                      SymbolTableFile, sizeof(SymbolTableFile));
 463             DEBUG_ReadSymbolTable( SymbolTableFile );
 464         }
 465
 466         DEBUG_LoadEntryPoints();
 467         DEBUG_ProcessDeferredDebug();
 468     }
 469
 470 #if 0
 471     fprintf(stderr, "Entering debugger  PC=%x, mode=%d, count=%d\n",
 472             EIP_reg(&DEBUG_context),
 473             dbg_exec_mode, dbg_exec_count);
 474
 475     sleep(1);
 476 #endif
 477
 478     if ((signal != SIGTRAP) || !DEBUG_ShouldContinue( dbg_exec_mode,
 479                                                       &dbg_exec_count ))
 480     {
 481         DBG_ADDR addr;
 482         TDB *pTask = (TDB*)GlobalLock16( GetCurrentTask() );
 483
 484         addr.seg = CS_reg(&DEBUG_context);
 485         addr.off = EIP_reg(&DEBUG_context);
 486         if (ISV86(&DEBUG_context)) addr.seg |= (DWORD)(pTask?(pTask->hModule):0)<<16;
 487         addr.type = NULL;
 488         DBG_FIX_ADDR_SEG( &addr, 0 );
 489
 490         GlobalUnlock16( GetCurrentTask() );
 491
 492         /* Put the display in a correct state */
 493
 494         TSXUngrabServer( display );
 495         TSXFlush( display );
 496
 497         newmode = ISV86(&DEBUG_context) ? 16 : IS_SELECTOR_32BIT(addr.seg) ? 32 : 16;
 498         if (newmode != dbg_mode)
 499             fprintf(stderr,"In %d bit mode.\n", dbg_mode = newmode);
 500
 501         PROCESS_SuspendOtherThreads();
 502
 503         DEBUG_DoDisplay();
 504
 505         if (signal != SIGTRAP)  /* This is a real crash, dump some info */
 506         {
 507             DEBUG_InfoRegisters();
 508             DEBUG_InfoStack();
 509             if (dbg_mode == 16)
 510             {
 511                 LDT_Print( SELECTOR_TO_ENTRY(DS_reg(&DEBUG_context)), 1 );
 512                 if (ES_reg(&DEBUG_context) != DS_reg(&DEBUG_context))
 513                     LDT_Print( SELECTOR_TO_ENTRY(ES_reg(&DEBUG_context)), 1 );
 514             }
 515             DEBUG_BackTrace();
 516         }
 517         else
 518         {
 519           /*
 520            * Do a quiet backtrace so that we have an idea of what the situation
 521            * is WRT the source files.
 522            */
 523             DEBUG_SilentBackTrace();
 524         }
 525
 526         if ((signal != SIGTRAP) ||
 527             (dbg_exec_mode == EXEC_STEPI_OVER) ||
 528             (dbg_exec_mode == EXEC_STEPI_INSTR))
 529         {
 530             /* Show where we crashed */
 531             curr_frame = 0;
 532             DEBUG_PrintAddress( &addr, dbg_mode, TRUE );
 533             fprintf(stderr,":  ");
 534             if (DBG_CHECK_READ_PTR( &addr, 1 ))
 535               {
 536                 DEBUG_Disasm( &addr, TRUE );
 537                 fprintf(stderr,"\n");
 538               }
 539         }
 540
 541         ret_ok = 0;
 542         do
 543         {
 544             issue_prompt();
 545             yyparse();
 546             flush_symbols();
 547             addr.seg = CS_reg(&DEBUG_context) | (addr.seg&0xffff0000);
 548             addr.off = EIP_reg(&DEBUG_context);
 549             DBG_FIX_ADDR_SEG( &addr, 0 );
 550             ret_ok = DEBUG_ValidateRegisters();
 551             if (ret_ok) ret_ok = DBG_CHECK_READ_PTR( &addr, 1 );
 552         } while (!ret_ok);
 553     }
 554
 555     dbg_exec_mode = DEBUG_RestartExecution( dbg_exec_mode, dbg_exec_count );
 556     /*
 557      * This will have gotten absorbed into the breakpoint info
 558      * if it was used.  Otherwise it would have been ignored.
 559      * In any case, we don't mess with it any more.
 560      */
 561     if( dbg_exec_mode == EXEC_CONT )
 562       {
 563         dbg_exec_count = 0;
 564         PROCESS_ResumeOtherThreads();
 565       }
 566
 567     in_debugger = FALSE;
 568 }
 569
 570
 571
 572 /***********************************************************************
 573  *           DebugBreak   (KERNEL.203) (KERNEL32.181)
 574  */
 575 void DebugBreak( CONTEXT *regs )
 576 {
 577     char module[10];
 578     if (!GetModuleName( GetCurrentTask(), module, sizeof(module) ))
 579         strcpy( module, "???" );
 580     fprintf( stderr, "%s called DebugBreak\n", module );
 581     DEBUG_context = *regs;
 582     DEBUG_Main( SIGTRAP );
 583 }
 584
 585
 586 void ctx_debug( int signal, CONTEXT *regs )
 587 {
 588     DEBUG_context = *regs;
 589     DEBUG_Main( signal );
 590     *regs = DEBUG_context;
 591 }
 592
 593 void wine_debug( int signal, SIGCONTEXT *regs )
 594 {
 595 #if 0
 596     DWORD *stack = (DWORD *)ESP_sig(regs);
 597     *(--stack) = 0;
 598     *(--stack) = 0;
 599     *(--stack) = EH_NONCONTINUABLE;
 600     *(--stack) = EXCEPTION_ACCESS_VIOLATION;
 601     *(--stack) = EIP_sig(regs);
 602     ESP_sig(regs) = (DWORD)stack;
 603     EIP_sig(regs) = (DWORD)RaiseException;
 604 #else
 605     DEBUG_SetSigContext( regs );
 606     DEBUG_Main( signal );
 607     DEBUG_GetSigContext( regs );
 608 #endif
 609 }
 610
 611 int yyerror(char * s)
 612 {
 613         fprintf(stderr,"%s\n", s);
 614         return 0;
 615 }