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