kdbg/gdbdriver.cpp

   1 // $Id$
   2
   3 // Copyright by Johannes Sixt
   4 // This file is under GPL, the GNU General Public Licence
   5
   6 #include "gdbdriver.h"
   7 #include "exprwnd.h"
   8 #include <qregexp.h>
   9 #include <qstringlist.h>
  10 #include <klocale.h>                    /* i18n */
  11 #include <ctype.h>
  12 #include <stdlib.h>                     /* strtol, atoi */
  13 #include <string.h>                     /* strcpy */
  14
  15 #include "assert.h"
  16 #ifdef HAVE_CONFIG_H
  17 #include "config.h"
  18 #endif
  19 #include "mydebug.h"
  20
  21 static void skipString(const char*& p);
  22 static void skipNested(const char*& s, char opening, char closing);
  23 static VarTree* parseVar(const char*& s);
  24 static bool parseName(const char*& s, QString& name, VarTree::NameKind& kind);
  25 static bool parseValue(const char*& s, VarTree* variable);
  26 static bool parseNested(const char*& s, VarTree* variable);
  27 static bool parseVarSeq(const char*& s, VarTree* variable);
  28 static bool parseValueSeq(const char*& s, VarTree* variable);
  29
  30 #define PROMPT "(kdbg)"
  31 #define PROMPT_LEN 6
  32 #define PROMPT_LAST_CHAR ')'            /* needed when searching for prompt string */
  33
  34
  35 // TODO: make this cmd info stuff non-static to allow multiple
  36 // simultaneous gdbs to run!
  37
  38 struct GdbCmdInfo {
  39     DbgCommand cmd;
  40     const char* fmt;                    /* format string */
  41     enum Args {
  42         argNone, argString, argNum,
  43         argStringNum, argNumString,
  44         argString2, argNum2
  45     } argsNeeded;
  46 };
  47
  48 static const char printQStringStructFmt[] =
  49                 // if the string data is junk, fail early
  50                 "print ($qstrunicode=($qstrdata=(%s))->unicode)?"
  51                 // print an array of shorts
  52                 "(*(unsigned short*)$qstrunicode)@"
  53                 // limit the length
  54                 "(($qstrlen=(unsigned int)($qstrdata->len))>100?100:$qstrlen)"
  55                 // if unicode data is 0, check if it is QString::null
  56                 ":($qstrdata==QString::null.d)\n";
  57
  58 // However, gdb can't always find QString::null (I don't know why)
  59 // which results in an error; we autodetect this situation in
  60 // parseQt2QStrings and revert to a safe expression.
  61 // Same as above except for last line:
  62 static const char printQStringStructNoNullFmt[] =
  63                 "print ($qstrunicode=($qstrdata=(%s))->unicode)?"
  64                 "(*(unsigned short*)$qstrunicode)@"
  65                 "(($qstrlen=(unsigned int)($qstrdata->len))>100?100:$qstrlen)"
  66                 ":1==0\n";
  67
  68 /*
  69  * The following array of commands must be sorted by the DC* values,
  70  * because they are used as indices.
  71  */
  72 static GdbCmdInfo cmds[] = {
  73     { DCinitialize, "", GdbCmdInfo::argNone },
  74     { DCtty, "tty %s\n", GdbCmdInfo::argString },
  75     { DCexecutable, "file \"%s\"\n", GdbCmdInfo::argString },
  76     { DCtargetremote, "target remote %s\n", GdbCmdInfo::argString },
  77     { DCcorefile, "core-file %s\n", GdbCmdInfo::argString },
  78     { DCattach, "attach %s\n", GdbCmdInfo::argString },
  79     { DCinfolinemain, "info line main\n", GdbCmdInfo::argNone },
  80     { DCinfolocals, "kdbg__alllocals\n", GdbCmdInfo::argNone },
  81     { DCinforegisters, "info all-registers\n", GdbCmdInfo::argNone},
  82     { DCexamine, "x %s %s\n", GdbCmdInfo::argString2 },
  83     { DCinfoline, "info line %s:%d\n", GdbCmdInfo::argStringNum },
  84     { DCdisassemble, "disassemble %s %s\n", GdbCmdInfo::argString2 },
  85     { DCsetargs, "set args %s\n", GdbCmdInfo::argString },
  86     { DCsetenv, "set env %s %s\n", GdbCmdInfo::argString2 },
  87     { DCunsetenv, "unset env %s\n", GdbCmdInfo::argString },
  88     { DCsetoption, "setoption %s %d\n", GdbCmdInfo::argStringNum},
  89     { DCcd, "cd %s\n", GdbCmdInfo::argString },
  90     { DCbt, "bt\n", GdbCmdInfo::argNone },
  91     { DCrun, "run\n", GdbCmdInfo::argNone },
  92     { DCcont, "cont\n", GdbCmdInfo::argNone },
  93     { DCstep, "step\n", GdbCmdInfo::argNone },
  94     { DCstepi, "stepi\n", GdbCmdInfo::argNone },
  95     { DCnext, "next\n", GdbCmdInfo::argNone },
  96     { DCnexti, "nexti\n", GdbCmdInfo::argNone },
  97     { DCfinish, "finish\n", GdbCmdInfo::argNone },
  98     { DCuntil, "until %s:%d\n", GdbCmdInfo::argStringNum },
  99     { DCkill, "kill\n", GdbCmdInfo::argNone },
 100     { DCbreaktext, "break %s\n", GdbCmdInfo::argString },
 101     { DCbreakline, "break %s:%d\n", GdbCmdInfo::argStringNum },
 102     { DCtbreakline, "tbreak %s:%d\n", GdbCmdInfo::argStringNum },
 103     { DCbreakaddr, "break *%s\n", GdbCmdInfo::argString },
 104     { DCtbreakaddr, "tbreak *%s\n", GdbCmdInfo::argString },
 105     { DCwatchpoint, "watch %s\n", GdbCmdInfo::argString },
 106     { DCdelete, "delete %d\n", GdbCmdInfo::argNum },
 107     { DCenable, "enable %d\n", GdbCmdInfo::argNum },
 108     { DCdisable, "disable %d\n", GdbCmdInfo::argNum },
 109     { DCprint, "print %s\n", GdbCmdInfo::argString },
 110     { DCprintStruct, "print %s\n", GdbCmdInfo::argString },
 111     { DCprintQStringStruct, printQStringStructFmt, GdbCmdInfo::argString},
 112     { DCframe, "frame %d\n", GdbCmdInfo::argNum },
 113     { DCfindType, "whatis %s\n", GdbCmdInfo::argString },
 114     { DCinfosharedlib, "info sharedlibrary\n", GdbCmdInfo::argNone },
 115     { DCthread, "thread %d\n", GdbCmdInfo::argNum },
 116     { DCinfothreads, "info threads\n", GdbCmdInfo::argNone },
 117     { DCinfobreak, "info breakpoints\n", GdbCmdInfo::argNone },
 118     { DCcondition, "condition %d %s\n", GdbCmdInfo::argNumString},
 119     { DCsetpc, "set variable $pc=%s\n", GdbCmdInfo::argString },
 120     { DCignore, "ignore %d %d\n", GdbCmdInfo::argNum2},
 121 };
 122
 123 #define NUM_CMDS (int(sizeof(cmds)/sizeof(cmds[0])))
 124 #define MAX_FMTLEN 200
 125
 126 GdbDriver::GdbDriver() :
 127         DebuggerDriver(),
 128         m_gdbMajor(4), m_gdbMinor(16)
 129 {
 130     strcpy(m_prompt, PROMPT);
 131     m_promptMinLen = PROMPT_LEN;
 132     m_promptLastChar = PROMPT_LAST_CHAR;
 133
 134 #ifndef NDEBUG
 135     // check command info array
 136     char* perc;
 137     for (int i = 0; i < NUM_CMDS; i++) {
 138         // must be indexable by DbgCommand values, i.e. sorted by DbgCommand values
 139         assert(i == cmds[i].cmd);
 140         // a format string must be associated
 141         assert(cmds[i].fmt != 0);
 142         assert(strlen(cmds[i].fmt) <= MAX_FMTLEN);
 143         // format string must match arg specification
 144         switch (cmds[i].argsNeeded) {
 145         case GdbCmdInfo::argNone:
 146             assert(strchr(cmds[i].fmt, '%') == 0);
 147             break;
 148         case GdbCmdInfo::argString:
 149             perc = strchr(cmds[i].fmt, '%');
 150             assert(perc != 0 && perc[1] == 's');
 151             assert(strchr(perc+2, '%') == 0);
 152             break;
 153         case GdbCmdInfo::argNum:
 154             perc = strchr(cmds[i].fmt, '%');
 155             assert(perc != 0 && perc[1] == 'd');
 156             assert(strchr(perc+2, '%') == 0);
 157             break;
 158         case GdbCmdInfo::argStringNum:
 159             perc = strchr(cmds[i].fmt, '%');
 160             assert(perc != 0 && perc[1] == 's');
 161             perc = strchr(perc+2, '%');
 162             assert(perc != 0 && perc[1] == 'd');
 163             assert(strchr(perc+2, '%') == 0);
 164             break;
 165         case GdbCmdInfo::argNumString:
 166             perc = strchr(cmds[i].fmt, '%');
 167             assert(perc != 0 && perc[1] == 'd');
 168             perc = strchr(perc+2, '%');
 169             assert(perc != 0 && perc[1] == 's');
 170             assert(strchr(perc+2, '%') == 0);
 171             break;
 172         case GdbCmdInfo::argString2:
 173             perc = strchr(cmds[i].fmt, '%');
 174             assert(perc != 0 && perc[1] == 's');
 175             perc = strchr(perc+2, '%');
 176             assert(perc != 0 && perc[1] == 's');
 177             assert(strchr(perc+2, '%') == 0);
 178             break;
 179         case GdbCmdInfo::argNum2:
 180             perc = strchr(cmds[i].fmt, '%');
 181             assert(perc != 0 && perc[1] == 'd');
 182             perc = strchr(perc+2, '%');
 183             assert(perc != 0 && perc[1] == 'd');
 184             assert(strchr(perc+2, '%') == 0);
 185             break;
 186         }
 187     }
 188     assert(strlen(printQStringStructFmt) <= MAX_FMTLEN);
 189     assert(strlen(printQStringStructNoNullFmt) <= MAX_FMTLEN);
 190 #endif
 191 }
 192
 193 GdbDriver::~GdbDriver()
 194 {
 195 }
 196
 197
 198 QString GdbDriver::driverName() const
 199 {
 200     return "GDB";
 201 }
 202
 203 QString GdbDriver::defaultGdb()
 204 {
 205     return
 206         "gdb"
 207         " --fullname"   /* to get standard file names each time the prog stops */
 208         " --nx";        /* do not execute initialization files */
 209 }
 210
 211 QString GdbDriver::defaultInvocation() const
 212 {
 213     if (m_defaultCmd.isEmpty()) {
 214         return defaultGdb();
 215     } else {
 216         return m_defaultCmd;
 217     }
 218 }
 219
 220 QStringList GdbDriver::boolOptionList() const
 221 {
 222     // no options
 223     return QStringList();
 224 }
 225
 226 bool GdbDriver::startup(QString cmdStr)
 227 {
 228     if (!DebuggerDriver::startup(cmdStr))
 229         return false;
 230
 231     static const char gdbInitialize[] =
 232         /*
 233          * Work around buggy gdbs that do command line editing even if they
 234          * are not on a tty. The readline library echos every command back
 235          * in this case, which is confusing for us.
 236          */
 237         "set editing off\n"
 238         "set confirm off\n"
 239         "set print static-members off\n"
 240         "set print asm-demangle on\n"
 241         /*
 242          * Write a short macro that prints all locals: local variables and
 243          * function arguments.
 244          */
 245         "define kdbg__alllocals\n"
 246         "info locals\n"                 /* local vars supersede args with same name */
 247         "info args\n"                   /* therefore, arguments must come last */
 248         "end\n"
 249         // change prompt string and synchronize with gdb
 250         "set prompt " PROMPT "\n"
 251         ;
 252
 253     executeCmdString(DCinitialize, gdbInitialize, false);
 254
 255     // assume that QString::null is ok
 256     cmds[DCprintQStringStruct].fmt = printQStringStructFmt;
 257
 258     return true;
 259 }
 260
 261 void GdbDriver::commandFinished(CmdQueueItem* cmd)
 262 {
 263     // command string must be committed
 264     if (!cmd->m_committed) {
 265         // not commited!
 266         TRACE("calling " + (__PRETTY_FUNCTION__ + (" with uncommited command:\n\t" +
 267               cmd->m_cmdString)));
 268         return;
 269     }
 270
 271     switch (cmd->m_cmd) {
 272     case DCinitialize:
 273         // get version number from preamble
 274         {
 275             int len;
 276             QRegExp GDBVersion("\\nGDB [0-9]+\\.[0-9]+");
 277             int offset = GDBVersion.match(m_output, 0, &len);
 278             if (offset >= 0) {
 279                 char* start = m_output + offset + 5;    // skip "\nGDB "
 280                 char* end;
 281                 m_gdbMajor = strtol(start, &end, 10);
 282                 m_gdbMinor = strtol(end + 1, 0, 10);    // skip "."
 283                 if (start == end) {
 284                     // nothing was parsed
 285                     m_gdbMajor = 4;
 286                     m_gdbMinor = 16;
 287                 }
 288             } else {
 289                 // assume some default version (what would make sense?)
 290                 m_gdbMajor = 4;
 291                 m_gdbMinor = 16;
 292             }
 293             // use a feasible core-file command
 294             if (m_gdbMajor > 4 || (m_gdbMajor == 4 && m_gdbMinor >= 16)) {
 295                 cmds[DCcorefile].fmt = "target core %s\n";
 296             } else {
 297                 cmds[DCcorefile].fmt = "core-file %s\n";
 298             }
 299         }
 300         break;
 301     default:;
 302     }
 303
 304     /* ok, the command is ready */
 305     emit commandReceived(cmd, m_output);
 306
 307     switch (cmd->m_cmd) {
 308     case DCcorefile:
 309     case DCinfolinemain:
 310     case DCframe:
 311     case DCattach:
 312     case DCrun:
 313     case DCcont:
 314     case DCstep:
 315     case DCstepi:
 316     case DCnext:
 317     case DCnexti:
 318     case DCfinish:
 319     case DCuntil:
 320         parseMarker();
 321     default:;
 322     }
 323 }
 324
 325 /*
 326  * The --fullname option makes gdb send a special normalized sequence print
 327  * each time the program stops and at some other points. The sequence has
 328  * the form "\032\032filename:lineno:charoffset:(beg|middle):address".
 329  */
 330 void GdbDriver::parseMarker()
 331 {
 332     char* startMarker = strstr(m_output, "\032\032");
 333     if (startMarker == 0)
 334         return;
 335
 336     // extract the marker
 337     startMarker += 2;
 338     TRACE(QString("found marker: ") + startMarker);
 339     char* endMarker = strchr(startMarker, '\n');
 340     if (endMarker == 0)
 341         return;
 342
 343     *endMarker = '\0';
 344
 345     // extract filename and line number
 346     static QRegExp MarkerRE(":[0-9]+:[0-9]+:[begmidl]+:0x");
 347
 348     int len;
 349     int lineNoStart = MarkerRE.match(startMarker, 0, &len);
 350     if (lineNoStart >= 0) {
 351         int lineNo = atoi(startMarker + lineNoStart+1);
 352
 353         // get address
 354         const char* addrStart = startMarker + lineNoStart + len - 2;
 355         DbgAddr address = QString(addrStart).stripWhiteSpace();
 356
 357         // now show the window
 358         startMarker[lineNoStart] = '\0';   /* split off file name */
 359         emit activateFileLine(startMarker, lineNo-1, address);
 360     }
 361 }
 362
 363
 364 /*
 365  * Escapes characters that might lead to problems when they appear on gdb's
 366  * command line.
 367  */
 368 static void normalizeStringArg(QString& arg)
 369 {
 370     /*
 371      * Remove trailing backslashes. This approach is a little simplistic,
 372      * but we know that there is at the moment no case where a trailing
 373      * backslash would make sense.
 374      */
 375     while (!arg.isEmpty() && arg[arg.length()-1] == '\\') {
 376         arg = arg.left(arg.length()-1);
 377     }
 378 }
 379
 380
 381 QString GdbDriver::makeCmdString(DbgCommand cmd, QString strArg)
 382 {
 383     assert(cmd >= 0 && cmd < NUM_CMDS);
 384     assert(cmds[cmd].argsNeeded == GdbCmdInfo::argString);
 385
 386     normalizeStringArg(strArg);
 387
 388     if (cmd == DCcd) {
 389         // need the working directory when parsing the output
 390         m_programWD = strArg;
 391     } else if (cmd == DCsetargs) {
 392         // attach saved redirection
 393         strArg += m_redirect;
 394     }
 395
 396     SIZED_QString(cmdString, MAX_FMTLEN+strArg.length());
 397     cmdString.sprintf(cmds[cmd].fmt, strArg.latin1());
 398     return cmdString;
 399 }
 400
 401 QString GdbDriver::makeCmdString(DbgCommand cmd, int intArg)
 402 {
 403     assert(cmd >= 0 && cmd < NUM_CMDS);
 404     assert(cmds[cmd].argsNeeded == GdbCmdInfo::argNum);
 405
 406     SIZED_QString(cmdString, MAX_FMTLEN+30);
 407
 408     cmdString.sprintf(cmds[cmd].fmt, intArg);
 409     return cmdString;
 410 }
 411
 412 QString GdbDriver::makeCmdString(DbgCommand cmd, QString strArg, int intArg)
 413 {
 414     assert(cmd >= 0 && cmd < NUM_CMDS);
 415     assert(cmds[cmd].argsNeeded == GdbCmdInfo::argStringNum ||
 416            cmds[cmd].argsNeeded == GdbCmdInfo::argNumString ||
 417            cmd == DCexamine ||
 418            cmd == DCtty);
 419
 420     normalizeStringArg(strArg);
 421
 422     SIZED_QString(cmdString, MAX_FMTLEN+30+strArg.length());
 423
 424     if (cmd == DCtty)
 425     {
 426         /*
 427          * intArg specifies which channels should be redirected to
 428          * /dev/null. It is a value or'ed together from RDNstdin,
 429          * RDNstdout, RDNstderr. We store the value for a later DCsetargs
 430          * command.
 431          *
 432          * Note: We rely on that after the DCtty a DCsetargs will follow,
 433          * which will ultimately apply the redirection.
 434          */
 435         static const char* const runRedir[8] = {
 436             "",
 437             " </dev/null",
 438             " >/dev/null",
 439             " </dev/null >/dev/null",
 440             " 2>/dev/null",
 441             " </dev/null 2>/dev/null",
 442             " >/dev/null 2>&1",
 443             " </dev/null >/dev/null 2>&1"
 444         };
 445         if (strArg.isEmpty())
 446             intArg = 7;                 /* failsafe if no tty */
 447         m_redirect = runRedir[intArg & 7];
 448
 449         return makeCmdString(DCtty, strArg);   /* note: no problem if strArg empty */
 450     }
 451
 452     if (cmd == DCexamine) {
 453         // make a format specifier from the intArg
 454         static const char size[16] = {
 455             '\0', 'b', 'h', 'w', 'g'
 456         };
 457         static const char format[16] = {
 458             '\0', 'x', 'd', 'u', 'o', 't',
 459             'a',  'c', 'f', 's', 'i'
 460         };
 461         assert(MDTsizemask == 0xf);     /* lowest 4 bits */
 462         assert(MDTformatmask == 0xf0);  /* next 4 bits */
 463         int count = 16;                 /* number of entities to print */
 464         char sizeSpec = size[intArg & MDTsizemask];
 465         char formatSpec = format[(intArg & MDTformatmask) >> 4];
 466         assert(sizeSpec != '\0');
 467         assert(formatSpec != '\0');
 468         // adjust count such that 16 lines are printed
 469         switch (intArg & MDTformatmask) {
 470         case MDTstring: case MDTinsn:
 471             break;                      /* no modification needed */
 472         default:
 473             // all cases drop through:
 474             switch (intArg & MDTsizemask) {
 475             case MDTbyte:
 476             case MDThalfword:
 477                 count *= 2;
 478             case MDTword:
 479                 count *= 2;
 480             case MDTgiantword:
 481                 count *= 2;
 482             }
 483             break;
 484         }
 485         QString spec;
 486         spec.sprintf("/%d%c%c", count, sizeSpec, formatSpec);
 487
 488         return makeCmdString(DCexamine, spec, strArg);
 489     }
 490
 491     if (cmds[cmd].argsNeeded == GdbCmdInfo::argStringNum)
 492     {
 493         // line numbers are zero-based
 494         if (cmd == DCuntil || cmd == DCbreakline ||
 495             cmd == DCtbreakline || cmd == DCinfoline)
 496         {
 497             intArg++;
 498         }
 499         if (cmd == DCinfoline)
 500         {
 501             // must split off file name part
 502             int slash = strArg.findRev('/');
 503             if (slash >= 0)
 504                 strArg = strArg.right(strArg.length()-slash-1);
 505         }
 506         cmdString.sprintf(cmds[cmd].fmt, strArg.latin1(), intArg);
 507     }
 508     else
 509     {
 510         cmdString.sprintf(cmds[cmd].fmt, intArg, strArg.latin1());
 511     }
 512     return cmdString;
 513 }
 514
 515 QString GdbDriver::makeCmdString(DbgCommand cmd, QString strArg1, QString strArg2)
 516 {
 517     assert(cmd >= 0 && cmd < NUM_CMDS);
 518     assert(cmds[cmd].argsNeeded == GdbCmdInfo::argString2);
 519
 520     normalizeStringArg(strArg1);
 521     normalizeStringArg(strArg2);
 522
 523     SIZED_QString(cmdString, MAX_FMTLEN+strArg1.length()+strArg2.length());
 524     cmdString.sprintf(cmds[cmd].fmt, strArg1.latin1(), strArg2.latin1());
 525     return cmdString;
 526 }
 527
 528 QString GdbDriver::makeCmdString(DbgCommand cmd, int intArg1, int intArg2)
 529 {
 530     assert(cmd >= 0 && cmd < NUM_CMDS);
 531     assert(cmds[cmd].argsNeeded == GdbCmdInfo::argNum2);
 532
 533     SIZED_QString(cmdString, MAX_FMTLEN+60);
 534     cmdString.sprintf(cmds[cmd].fmt, intArg1, intArg2);
 535     return cmdString;
 536 }
 537
 538 CmdQueueItem* GdbDriver::executeCmd(DbgCommand cmd, bool clearLow)
 539 {
 540     assert(cmd >= 0 && cmd < NUM_CMDS);
 541     assert(cmds[cmd].argsNeeded == GdbCmdInfo::argNone);
 542
 543     if (cmd == DCrun) {
 544         m_haveCoreFile = false;
 545     }
 546
 547     return executeCmdString(cmd, cmds[cmd].fmt, clearLow);
 548 }
 549
 550 CmdQueueItem* GdbDriver::executeCmd(DbgCommand cmd, QString strArg,
 551                                     bool clearLow)
 552 {
 553     return executeCmdString(cmd, makeCmdString(cmd, strArg), clearLow);
 554 }
 555
 556 CmdQueueItem* GdbDriver::executeCmd(DbgCommand cmd, int intArg,
 557                                     bool clearLow)
 558 {
 559
 560     return executeCmdString(cmd, makeCmdString(cmd, intArg), clearLow);
 561 }
 562
 563 CmdQueueItem* GdbDriver::executeCmd(DbgCommand cmd, QString strArg, int intArg,
 564                                     bool clearLow)
 565 {
 566     return executeCmdString(cmd, makeCmdString(cmd, strArg, intArg), clearLow);
 567 }
 568
 569 CmdQueueItem* GdbDriver::executeCmd(DbgCommand cmd, QString strArg1, QString strArg2,
 570                                     bool clearLow)
 571 {
 572     return executeCmdString(cmd, makeCmdString(cmd, strArg1, strArg2), clearLow);
 573 }
 574
 575 CmdQueueItem* GdbDriver::executeCmd(DbgCommand cmd, int intArg1, int intArg2,
 576                                     bool clearLow)
 577 {
 578     return executeCmdString(cmd, makeCmdString(cmd, intArg1, intArg2), clearLow);
 579 }
 580
 581 CmdQueueItem* GdbDriver::queueCmd(DbgCommand cmd, QueueMode mode)
 582 {
 583     return queueCmdString(cmd, cmds[cmd].fmt, mode);
 584 }
 585
 586 CmdQueueItem* GdbDriver::queueCmd(DbgCommand cmd, QString strArg,
 587                                   QueueMode mode)
 588 {
 589     return queueCmdString(cmd, makeCmdString(cmd, strArg), mode);
 590 }
 591
 592 CmdQueueItem* GdbDriver::queueCmd(DbgCommand cmd, int intArg,
 593                                   QueueMode mode)
 594 {
 595     return queueCmdString(cmd, makeCmdString(cmd, intArg), mode);
 596 }
 597
 598 CmdQueueItem* GdbDriver::queueCmd(DbgCommand cmd, QString strArg, int intArg,
 599                                   QueueMode mode)
 600 {
 601     return queueCmdString(cmd, makeCmdString(cmd, strArg, intArg), mode);
 602 }
 603
 604 CmdQueueItem* GdbDriver::queueCmd(DbgCommand cmd, QString strArg1, QString strArg2,
 605                                   QueueMode mode)
 606 {
 607     return queueCmdString(cmd, makeCmdString(cmd, strArg1, strArg2), mode);
 608 }
 609
 610 void GdbDriver::terminate()
 611 {
 612     kill(SIGTERM);
 613     m_state = DSidle;
 614 }
 615
 616 void GdbDriver::detachAndTerminate()
 617 {
 618     kill(SIGINT);
 619     flushCommands();
 620     executeCmdString(DCinitialize, "detach\nquit\n", true);
 621 }
 622
 623 void GdbDriver::interruptInferior()
 624 {
 625     kill(SIGINT);
 626     // remove accidentally queued commands
 627     flushHiPriQueue();
 628 }
 629
 630 static bool isErrorExpr(const char* output)
 631 {
 632     return
 633         strncmp(output, "Cannot access memory at", 23) == 0 ||
 634         strncmp(output, "Attempt to dereference a generic pointer", 40) == 0 ||
 635         strncmp(output, "Attempt to take contents of ", 28) == 0 ||
 636         strncmp(output, "Attempt to use a type name as an expression", 43) == 0 ||
 637         strncmp(output, "There is no member or method named", 34) == 0 ||
 638         strncmp(output, "A parse error in expression", 27) == 0 ||
 639         strncmp(output, "No symbol \"", 11) == 0 ||
 640         strncmp(output, "Internal error: ", 16) == 0;
 641 }
 642
 643 /**
 644  * Returns true if the output is an error message. If wantErrorValue is
 645  * true, a new VarTree object is created and filled with the error message.
 646  */
 647 static bool parseErrorMessage(const char* output,
 648                               VarTree*& variable, bool wantErrorValue)
 649 {
 650     if (isErrorExpr(output))
 651     {
 652         if (wantErrorValue) {
 653             // put the error message as value in the variable
 654             variable = new VarTree(QString(), VarTree::NKplain);
 655             const char* endMsg = strchr(output, '\n');
 656             if (endMsg == 0)
 657                 endMsg = output + strlen(output);
 658             variable->m_value = FROM_LATIN1(output, endMsg-output);
 659         } else {
 660             variable = 0;
 661         }
 662         return true;
 663     }
 664     return false;
 665 }
 666
 667 #if QT_VERSION >= 300
 668 union Qt2QChar {
 669     short s;
 670     struct {
 671         uchar row;
 672         uchar cell;
 673     } qch;
 674 };
 675 #endif
 676
 677 VarTree* GdbDriver::parseQCharArray(const char* output, bool wantErrorValue, bool qt3like)
 678 {
 679     VarTree* variable = 0;
 680
 681     /*
 682      * Parse off white space. gdb sometimes prints white space first if the
 683      * printed array leaded to an error.
 684      */
 685     const char* p = output;
 686     while (isspace(*p))
 687         p++;
 688
 689     // check if this is an error indicating that gdb does not know about QString::null
 690     if (cmds[DCprintQStringStruct].fmt == printQStringStructFmt &&
 691         (strncmp(p, "Internal error: could not find static variable null", 51) == 0 ||
 692          /*
 693           * At least gdb 5.2.1 reports the following error when it accesses
 694           * QString::null. Checking for it can result in false positives
 695           * (where the error is actually triggered by a real NULL pointer
 696           * in a badly initialized QString variable) but the consequences
 697           * are mild.
 698           */
 699          strncmp(p, "Cannot access memory at address 0x0", 35) == 0))
 700     {
 701         /* QString::null doesn't work, use an alternate expression */
 702         cmds[DCprintQStringStruct].fmt = printQStringStructNoNullFmt;
 703         // continue and let parseOffErrorExpr catch the error
 704     }
 705
 706     // special case: empty string (0 repetitions)
 707     if (strncmp(p, "Invalid number 0 of repetitions", 31) == 0)
 708     {
 709         variable = new VarTree(QString(), VarTree::NKplain);
 710         variable->m_value = "\"\"";
 711         return variable;
 712     }
 713
 714     // check for error conditions
 715     if (parseErrorMessage(p, variable, wantErrorValue))
 716         return variable;
 717
 718     // parse the array
 719
 720     // find '='
 721     p = strchr(p, '=');
 722     if (p == 0) {
 723         goto error;
 724     }
 725     // skip white space
 726     do {
 727         p++;
 728     } while (isspace(*p));
 729
 730     if (*p == '{')
 731     {
 732         // this is the real data
 733         p++;                            /* skip '{' */
 734
 735         // parse the array
 736         QString result;
 737         QString repeatCount;
 738         enum { wasNothing, wasChar, wasRepeat } lastThing = wasNothing;
 739         /*
 740          * A matrix for separators between the individual "things"
 741          * that are added to the string. The first index is a bool,
 742          * the second index is from the enum above.
 743          */
 744         static const char* separator[2][3] = {
 745             { "\"", 0,       ", \"" },  /* normal char is added */
 746             { "'",  "\", '", ", '" }    /* repeated char is added */
 747         };
 748
 749         while (isdigit(*p)) {
 750             // parse a number
 751             char* end;
 752             unsigned short value = (unsigned short) strtoul(p, &end, 0);
 753             if (end == p)
 754                 goto error;             /* huh? no valid digits */
 755             // skip separator and search for a repeat count
 756             p = end;
 757             while (isspace(*p) || *p == ',')
 758                 p++;
 759             bool repeats = strncmp(p, "<repeats ", 9) == 0;
 760             if (repeats) {
 761                 const char* start = p;
 762                 p = strchr(p+9, '>');   /* search end and advance */
 763                 if (p == 0)
 764                     goto error;
 765                 p++;                    /* skip '>' */
 766                 repeatCount = FROM_LATIN1(start, p-start);
 767                 while (isspace(*p) || *p == ',')
 768                     p++;
 769             }
 770             // p is now at the next char (or the end)
 771
 772             // interpret the value as a QChar
 773             // TODO: make cross-architecture compatible
 774             QChar ch;
 775             if (qt3like) {
 776                 ch = QChar(value);
 777             } else {
 778 #if QT_VERSION < 300
 779                 (unsigned short&)ch = value;
 780 #else
 781                 Qt2QChar c;
 782                 c.s = value;
 783                 ch.setRow(c.qch.row);
 784                 ch.setCell(c.qch.cell);
 785 #endif
 786             }
 787
 788             // escape a few frequently used characters
 789             char escapeCode = '\0';
 790             switch (ch.latin1()) {
 791             case '\n': escapeCode = 'n'; break;
 792             case '\r': escapeCode = 'r'; break;
 793             case '\t': escapeCode = 't'; break;
 794             case '\b': escapeCode = 'b'; break;
 795             case '\"': escapeCode = '\"'; break;
 796             case '\\': escapeCode = '\\'; break;
 797             case '\0': if (value == 0) { escapeCode = '0'; } break;
 798             }
 799
 800             // add separator
 801             result += separator[repeats][lastThing];
 802             // add char
 803             if (escapeCode != '\0') {
 804                 result += '\\';
 805                 ch = escapeCode;
 806             }
 807             result += ch;
 808
 809             // fixup repeat count and lastThing
 810             if (repeats) {
 811                 result += "' ";
 812                 result += repeatCount;
 813                 lastThing = wasRepeat;
 814             } else {
 815                 lastThing = wasChar;
 816             }
 817         }
 818         if (*p != '}')
 819             goto error;
 820
 821         // closing quote
 822         if (lastThing == wasChar)
 823             result += "\"";
 824
 825         // assign the value
 826         variable = new VarTree(QString(), VarTree::NKplain);
 827         variable->m_value = result;
 828     }
 829     else if (strncmp(p, "true", 4) == 0)
 830     {
 831         variable = new VarTree(QString(), VarTree::NKplain);
 832         variable->m_value = "QString::null";
 833     }
 834     else if (strncmp(p, "false", 5) == 0)
 835     {
 836         variable = new VarTree(QString(), VarTree::NKplain);
 837         variable->m_value = "(null)";
 838     }
 839     else
 840         goto error;
 841     return variable;
 842
 843 error:
 844     if (wantErrorValue) {
 845         variable = new VarTree(QString(), VarTree::NKplain);
 846         variable->m_value = "internal parse error";
 847     }
 848     return variable;
 849 }
 850
 851 static VarTree* parseVar(const char*& s)
 852 {
 853     const char* p = s;
 854
 855     // skip whitespace
 856     while (isspace(*p))
 857         p++;
 858
 859     QString name;
 860     VarTree::NameKind kind;
 861     if (!parseName(p, name, kind)) {
 862         return 0;
 863     }
 864
 865     // go for '='
 866     while (isspace(*p))
 867         p++;
 868     if (*p != '=') {
 869         TRACE(QString().sprintf("parse error: = not found after %s", (const char*)name));
 870         return 0;
 871     }
 872     // skip the '=' and more whitespace
 873     p++;
 874     while (isspace(*p))
 875         p++;
 876
 877     VarTree* variable = new VarTree(name, kind);
 878     variable->setDeleteChildren(true);
 879
 880     if (!parseValue(p, variable)) {
 881         delete variable;
 882         return 0;
 883     }
 884     s = p;
 885     return variable;
 886 }
 887
 888 static void skipNested(const char*& s, char opening, char closing)
 889 {
 890     const char* p = s;
 891
 892     // parse a nested type
 893     int nest = 1;
 894     p++;
 895     /*
 896      * Search for next matching `closing' char, skipping nested pairs of
 897      * `opening' and `closing'.
 898      */
 899     while (*p && nest > 0) {
 900         if (*p == opening) {
 901             nest++;
 902         } else if (*p == closing) {
 903             nest--;
 904         }
 905         p++;
 906     }
 907     if (nest > 0) {
 908         TRACE(QString().sprintf("parse error: mismatching %c%c at %-20.20s", opening, closing, s));
 909     }
 910     s = p;
 911 }
 912
 913 void skipString(const char*& p)
 914 {
 915 moreStrings:
 916     // opening quote
 917     char quote = *p++;
 918     while (*p != quote) {
 919         if (*p == '\\') {
 920             // skip escaped character
 921             // no special treatment for octal values necessary
 922             p++;
 923         }
 924         // simply return if no more characters
 925         if (*p == '\0')
 926             return;
 927         p++;
 928     }
 929     // closing quote
 930     p++;
 931     /*
 932      * Strings can consist of several parts, some of which contain repeated
 933      * characters.
 934      */
 935     if (quote == '\'') {
 936         // look ahaead for <repeats 123 times>
 937         const char* q = p+1;
 938         while (isspace(*q))
 939             q++;
 940         if (strncmp(q, "<repeats ", 9) == 0) {
 941             p = q+9;
 942             while (*p != '\0' && *p != '>')
 943                 p++;
 944             if (*p != '\0') {
 945                 p++;                    /* skip the '>' */
 946             }
 947         }
 948     }
 949     // is the string continued?
 950     if (*p == ',') {
 951         // look ahead for another quote
 952         const char* q = p+1;
 953         while (isspace(*q))
 954             q++;
 955         if (*q == '"' || *q == '\'') {
 956             // yes!
 957             p = q;
 958             goto moreStrings;
 959         }
 960     }
 961     /* very long strings are followed by `...' */
 962     if (*p == '.' && p[1] == '.' && p[2] == '.') {
 963         p += 3;
 964     }
 965 }
 966
 967 static void skipNestedWithString(const char*& s, char opening, char closing)
 968 {
 969     const char* p = s;
 970
 971     // parse a nested expression
 972     int nest = 1;
 973     p++;
 974     /*
 975      * Search for next matching `closing' char, skipping nested pairs of
 976      * `opening' and `closing' as well as strings.
 977      */
 978     while (*p && nest > 0) {
 979         if (*p == opening) {
 980             nest++;
 981         } else if (*p == closing) {
 982             nest--;
 983         } else if (*p == '\'' || *p == '\"') {
 984             skipString(p);
 985             continue;
 986         }
 987         p++;
 988     }
 989     if (nest > 0) {
 990         TRACE(QString().sprintf("parse error: mismatching %c%c at %-20.20s", opening, closing, s));
 991     }
 992     s = p;
 993 }
 994
 995 inline void skipName(const char*& p)
 996 {
 997     // allow : (for enumeration values) and $ and . (for _vtbl.)
 998     while (isalnum(*p) || *p == '_' || *p == ':' || *p == '$' || *p == '.')
 999         p++;
1000 }
1001
1002 static bool parseName(const char*& s, QString& name, VarTree::NameKind& kind)
1003 {
1004     kind = VarTree::NKplain;
1005
1006     const char* p = s;
1007     // examples of names:
1008     //  name
1009     //  <Object>
1010     //  <string<a,b<c>,7> >
1011
1012     if (*p == '<') {
1013         skipNested(p, '<', '>');
1014         name = FROM_LATIN1(s, p - s);
1015         kind = VarTree::NKtype;
1016     }
1017     else
1018     {
1019         // name, which might be "static"; allow dot for "_vtbl."
1020         skipName(p);
1021         if (p == s) {
1022             TRACE(QString().sprintf("parse error: not a name %-20.20s", s));
1023             return false;
1024         }
1025         int len = p - s;
1026         if (len == 6 && strncmp(s, "static", 6) == 0) {
1027             kind = VarTree::NKstatic;
1028
1029             // its a static variable, name comes now
1030             while (isspace(*p))
1031                 p++;
1032             s = p;
1033             skipName(p);
1034             if (p == s) {
1035                 TRACE(QString().sprintf("parse error: not a name after static %-20.20s", s));
1036                 return false;
1037             }
1038             len = p - s;
1039         }
1040         name = FROM_LATIN1(s, len);
1041     }
1042     // return the new position
1043     s = p;
1044     return true;
1045 }
1046
1047 static bool parseValue(const char*& s, VarTree* variable)
1048 {
1049     variable->m_value = "";
1050
1051 repeat:
1052     if (*s == '{') {
1053         s++;
1054         if (!parseNested(s, variable)) {
1055             return false;
1056         }
1057         // must be the closing brace
1058         if (*s != '}') {
1059             TRACE("parse error: missing } of " +  variable->getText());
1060             return false;
1061         }
1062         s++;
1063         // final white space
1064         while (isspace(*s))
1065             s++;
1066     } else {
1067         // examples of leaf values (cannot be the empty string):
1068         //  123
1069         //  -123
1070         //  23.575e+37
1071         //  0x32a45
1072         //  @0x012ab4
1073         //  (DwContentType&) @0x8123456: {...}
1074         //  0x32a45 "text"
1075         //  10 '\n'
1076         //  <optimized out>
1077         //  0x823abc <Array<int> virtual table>
1078         //  (void (*)()) 0x8048480 <f(E *, char)>
1079         //  (E *) 0xbffff450
1080         //  red
1081         //  &parseP (HTMLClueV *, char *)
1082
1083         const char*p = s;
1084
1085         // check for type
1086         QString type;
1087         if (*p == '(') {
1088             skipNested(p, '(', ')');
1089
1090             while (isspace(*p))
1091                 p++;
1092             variable->m_value = FROM_LATIN1(s, p - s);
1093         }
1094
1095         bool reference = false;
1096         if (*p == '@') {
1097             // skip reference marker
1098             p++;
1099             reference = true;
1100         }
1101         const char* start = p;
1102         if (*p == '-')
1103             p++;
1104
1105         // some values consist of more than one token
1106         bool checkMultiPart = false;
1107
1108         if (p[0] == '0' && p[1] == 'x') {
1109             // parse hex number
1110             p += 2;
1111             while (isxdigit(*p))
1112                 p++;
1113
1114             /*
1115              * Assume this is a pointer, but only if it's not a reference, since
1116              * references can't be expanded.
1117              */
1118             if (!reference) {
1119                 variable->m_varKind = VarTree::VKpointer;
1120             } else {
1121                 /*
1122                  * References are followed by a colon, in which case we'll
1123                  * find the value following the reference address.
1124                  */
1125                 if (*p == ':') {
1126                     p++;
1127                 } else {
1128                     // Paranoia. (Can this happen, i.e. reference not followed by ':'?)
1129                     reference = false;
1130                 }
1131             }
1132             checkMultiPart = true;
1133         } else if (isdigit(*p)) {
1134             // parse decimal number, possibly a float
1135             while (isdigit(*p))
1136                 p++;
1137             if (*p == '.') {            /* TODO: obey i18n? */
1138                 // fractional part
1139                 p++;
1140                 while (isdigit(*p))
1141                     p++;
1142             }
1143             if (*p == 'e' || *p == 'E') {
1144                 p++;
1145                 // exponent
1146                 if (*p == '-' || *p == '+')
1147                     p++;
1148                 while (isdigit(*p))
1149                     p++;
1150             }
1151
1152             // for char variables there is the char, eg. 10 '\n'
1153             checkMultiPart = true;
1154         } else if (*p == '<') {
1155             // e.g. <optimized out>
1156             skipNested(p, '<', '>');
1157         } else if (*p == '"' || *p == '\'') {
1158             // character may have multipart: '\000' <repeats 11 times>
1159             checkMultiPart = *p == '\'';
1160             // found a string
1161             skipString(p);
1162         } else if (*p == '&') {
1163             // function pointer
1164             p++;
1165             skipName(p);
1166             while (isspace(*p)) {
1167                 p++;
1168             }
1169             if (*p == '(') {
1170                 skipNested(p, '(', ')');
1171             }
1172         } else {
1173             // must be an enumeration value
1174             skipName(p);
1175         }
1176         variable->m_value += FROM_LATIN1(start, p - start);
1177
1178         if (checkMultiPart) {
1179             // white space
1180             while (isspace(*p))
1181                 p++;
1182             // may be followed by a string or <...>
1183             start = p;
1184
1185             if (*p == '"' || *p == '\'') {
1186                 skipString(p);
1187             } else if (*p == '<') {
1188                 // if this value is part of an array, it might be followed
1189                 // by <repeats 15 times>, which we don't skip here
1190                 if (strncmp(p, "<repeats ", 9) != 0)
1191                     skipNested(p, '<', '>');
1192             }
1193             if (p != start) {
1194                 // there is always a blank before the string,
1195                 // which we will include in the final string value
1196                 variable->m_value += FROM_LATIN1(start-1, (p - start)+1);
1197                 // if this was a pointer, reset that flag since we
1198                 // now got the value
1199                 variable->m_varKind = VarTree::VKsimple;
1200             }
1201         }
1202
1203         if (variable->m_value.length() == 0) {
1204             TRACE("parse error: no value for " + variable->getText());
1205             return false;
1206         }
1207
1208         // final white space
1209         while (isspace(*p))
1210             p++;
1211         s = p;
1212
1213         /*
1214          * If this was a reference, the value follows. It might even be a
1215          * composite variable!
1216          */
1217         if (reference) {
1218             goto repeat;
1219         }
1220
1221         if (variable->m_varKind == VarTree::VKpointer) {
1222             variable->setDelayedExpanding(true);
1223         }
1224     }
1225
1226     return true;
1227 }
1228
1229 static bool parseNested(const char*& s, VarTree* variable)
1230 {
1231     // could be a structure or an array
1232     while (isspace(*s))
1233         s++;
1234
1235     const char* p = s;
1236     bool isStruct = false;
1237     /*
1238      * If there is a name followed by an = or an < -- which starts a type
1239      * name -- or "static", it is a structure
1240      */
1241     if (*p == '<' || *p == '}') {
1242         isStruct = true;
1243     } else if (strncmp(p, "static ", 7) == 0) {
1244         isStruct = true;
1245     } else if (isalpha(*p) || *p == '_' || *p == '$') {
1246         // look ahead for a comma after the name
1247         skipName(p);
1248         while (isspace(*p))
1249             p++;
1250         if (*p == '=') {
1251             isStruct = true;
1252         }
1253         p = s;                          /* rescan the name */
1254     }
1255     if (isStruct) {
1256         if (!parseVarSeq(p, variable)) {
1257             return false;
1258         }
1259         variable->m_varKind = VarTree::VKstruct;
1260     } else {
1261         if (!parseValueSeq(p, variable)) {
1262             return false;
1263         }
1264         variable->m_varKind = VarTree::VKarray;
1265     }
1266     s = p;
1267     return true;
1268 }
1269
1270 static bool parseVarSeq(const char*& s, VarTree* variable)
1271 {
1272     // parse a comma-separated sequence of variables
1273     VarTree* var = variable;            /* var != 0 to indicate success if empty seq */
1274     for (;;) {
1275         if (*s == '}')
1276             break;
1277         if (strncmp(s, "<No data fields>}", 17) == 0)
1278         {
1279             // no member variables, so break out immediately
1280             s += 16;                    /* go to the closing brace */
1281             break;
1282         }
1283         var = parseVar(s);
1284         if (var == 0)
1285             break;                      /* syntax error */
1286         variable->appendChild(var);
1287         if (*s != ',')
1288             break;
1289         // skip the comma and whitespace
1290         s++;
1291         while (isspace(*s))
1292             s++;
1293     }
1294     return var != 0;
1295 }
1296
1297 static bool parseValueSeq(const char*& s, VarTree* variable)
1298 {
1299     // parse a comma-separated sequence of variables
1300     int index = 0;
1301     bool good;
1302     for (;;) {
1303         QString name;
1304         name.sprintf("[%d]", index);
1305         VarTree* var = new VarTree(name, VarTree::NKplain);
1306         var->setDeleteChildren(true);
1307         good = parseValue(s, var);
1308         if (!good) {
1309             delete var;
1310             return false;
1311         }
1312         // a value may be followed by "<repeats 45 times>"
1313         if (strncmp(s, "<repeats ", 9) == 0) {
1314             s += 9;
1315             char* end;
1316             int l = strtol(s, &end, 10);
1317             if (end == s || strncmp(end, " times>", 7) != 0) {
1318                 // should not happen
1319                 delete var;
1320                 return false;
1321             }
1322             TRACE(QString().sprintf("found <repeats %d times> in array", l));
1323             // replace name and advance index
1324             name.sprintf("[%d .. %d]", index, index+l-1);
1325             var->setText(name);
1326             index += l;
1327             // skip " times>" and space
1328             s = end+7;
1329             // possible final space
1330             while (isspace(*s))
1331                 s++;
1332         } else {
1333             index++;
1334         }
1335         variable->appendChild(var);
1336         if (*s != ',') {
1337             break;
1338         }
1339         // skip the comma and whitespace
1340         s++;
1341         while (isspace(*s))
1342             s++;
1343         // sometimes there is a closing brace after a comma
1344 //      if (*s == '}')
1345 //          break;
1346     }
1347     return true;
1348 }
1349
1350 /**
1351  * Parses a stack frame.
1352  */
1353 static void parseFrameInfo(const char*& s, QString& func,
1354                            QString& file, int& lineNo, DbgAddr& address)
1355 {
1356     const char* p = s;
1357
1358     // next may be a hexadecimal address
1359     if (*p == '0') {
1360         const char* start = p;
1361         p++;
1362         if (*p == 'x')
1363             p++;
1364         while (isxdigit(*p))
1365             p++;
1366         address = FROM_LATIN1(start, p-start);
1367         if (strncmp(p, " in ", 4) == 0)
1368             p += 4;
1369     } else {
1370         address = DbgAddr();
1371     }
1372     const char* start = p;
1373     // check for special signal handler frame
1374     if (strncmp(p, "<signal handler called>", 23) == 0) {
1375         func = FROM_LATIN1(start, 23);
1376         file = QString();
1377         lineNo = -1;
1378         s = p+23;
1379         if (*s == '\n')
1380             s++;
1381         return;
1382     }
1383     // search opening parenthesis
1384     while (*p != '\0' && *p != '(')
1385         p++;
1386     if (*p == '\0') {
1387         func = start;
1388         file = QString();
1389         lineNo = -1;
1390         s = p;
1391         return;
1392     }
1393     /*
1394      * Skip parameters. But notice that for complicated conversion
1395      * functions (eg. "operator int(**)()()", ie. convert to pointer to
1396      * pointer to function) as well as operator()(...) we have to skip
1397      * additional pairs of parentheses. Furthermore, recent gdbs write the
1398      * demangled name followed by the arguments in a pair of parentheses,
1399      * where the demangled name can end in "const".
1400      */
1401     do {
1402         skipNestedWithString(p, '(', ')');
1403         while (isspace(*p))
1404             p++;
1405         // skip "const"
1406         if (strncmp(p, "const", 5) == 0) {
1407             p += 5;
1408             while (isspace(*p))
1409                 p++;
1410         }
1411     } while (*p == '(');
1412
1413     // check for file position
1414     if (strncmp(p, "at ", 3) == 0) {
1415         p += 3;
1416         const char* fileStart = p;
1417         // go for the end of the line
1418         while (*p != '\0' && *p != '\n')
1419             p++;
1420         // search back for colon
1421         const char* colon = p;
1422         do {
1423             --colon;
1424         } while (*colon != ':');
1425         file = FROM_LATIN1(fileStart, colon-fileStart);
1426         lineNo = atoi(colon+1)-1;
1427         // skip new-line
1428         if (*p != '\0')
1429             p++;
1430     } else {
1431         // check for "from shared lib"
1432         if (strncmp(p, "from ", 5) == 0) {
1433             p += 5;
1434             // go for the end of the line
1435             while (*p != '\0' && *p != '\n')
1436                 p++;
1437             // skip new-line
1438             if (*p != '\0')
1439                 p++;
1440         }
1441         file = "";
1442         lineNo = -1;
1443     }
1444     // construct the function name (including file info)
1445     if (*p == '\0') {
1446         func = start;
1447     } else {
1448         func = FROM_LATIN1(start, p-start-1);   /* don't include \n */
1449     }
1450     s = p;
1451
1452     /*
1453      * Replace \n (and whitespace around it) in func by a blank. We cannot
1454      * use QString::simplifyWhiteSpace() for this because this would also
1455      * simplify space that belongs to a string arguments that gdb sometimes
1456      * prints in the argument lists of the function.
1457      */
1458     ASSERT(!isspace(func[0].latin1()));         /* there must be non-white before first \n */
1459     int nl = 0;
1460     while ((nl = func.find('\n', nl)) >= 0) {
1461         // search back to the beginning of the whitespace
1462         int startWhite = nl;
1463         do {
1464             --startWhite;
1465         } while (isspace(func[startWhite].latin1()));
1466         startWhite++;
1467         // search forward to the end of the whitespace
1468         do {
1469             nl++;
1470         } while (isspace(func[nl].latin1()));
1471         // replace
1472         func.replace(startWhite, nl-startWhite, " ");
1473         /* continue searching for more \n's at this place: */
1474         nl = startWhite+1;
1475     }
1476 }
1477
1478
1479 /**
1480  * Parses a stack frame including its frame number
1481  */
1482 static bool parseFrame(const char*& s, int& frameNo, QString& func,
1483                        QString& file, int& lineNo, DbgAddr& address)
1484 {
1485     // Example:
1486     //  #1  0x8048881 in Dl::Dl (this=0xbffff418, r=3214) at testfile.cpp:72
1487     //  Breakpoint 3, Cl::f(int) const (this=0xbffff3c0, x=17) at testfile.cpp:155
1488
1489     // must start with a hash mark followed by number
1490     // or with "Breakpoint " followed by number and comma
1491     if (s[0] == '#') {
1492         if (!isdigit(s[1]))
1493             return false;
1494         s++;                            /* skip the hash mark */
1495     } else if (strncmp(s, "Breakpoint ", 11) == 0) {
1496         if (!isdigit(s[11]))
1497             return false;
1498         s += 11;                        /* skip "Breakpoint" */
1499     } else
1500         return false;
1501
1502     // frame number
1503     frameNo = atoi(s);
1504     while (isdigit(*s))
1505         s++;
1506     // space and comma
1507     while (isspace(*s) || *s == ',')
1508         s++;
1509     parseFrameInfo(s, func, file, lineNo, address);
1510     return true;
1511 }
1512
1513 void GdbDriver::parseBackTrace(const char* output, QList<StackFrame>& stack)
1514 {
1515     QString func, file;
1516     int lineNo, frameNo;
1517     DbgAddr address;
1518
1519     while (::parseFrame(output, frameNo, func, file, lineNo, address)) {
1520         StackFrame* frm = new StackFrame;
1521         frm->frameNo = frameNo;
1522         frm->fileName = file;
1523         frm->lineNo = lineNo;
1524         frm->address = address;
1525         frm->var = new VarTree(func, VarTree::NKplain);
1526         stack.append(frm);
1527     }
1528 }
1529
1530 bool GdbDriver::parseFrameChange(const char* output, int& frameNo,
1531                                  QString& file, int& lineNo, DbgAddr& address)
1532 {
1533     QString func;
1534     return ::parseFrame(output, frameNo, func, file, lineNo, address);
1535 }
1536
1537
1538 bool GdbDriver::parseBreakList(const char* output, QList<Breakpoint>& brks)
1539 {
1540     // skip first line, which is the headline
1541     const char* p = strchr(output, '\n');
1542     if (p == 0)
1543         return false;
1544     p++;
1545     if (*p == '\0')
1546         return false;
1547
1548     // split up a line
1549     QString location;
1550     QString address;
1551     int hits = 0;
1552     uint ignoreCount = 0;
1553     QString condition;
1554     const char* end;
1555     char* dummy;
1556     while (*p != '\0') {
1557         // get Num
1558         long bpNum = strtol(p, &dummy, 10);     /* don't care about overflows */
1559         p = dummy;
1560         // get Type
1561         while (isspace(*p))
1562             p++;
1563         Breakpoint::Type bpType = Breakpoint::breakpoint;
1564         if (strncmp(p, "breakpoint", 10) == 0) {
1565             p += 10;
1566         } else if (strncmp(p, "hw watchpoint", 13) == 0) {
1567             bpType = Breakpoint::watchpoint;
1568             p += 13;
1569         } else if (strncmp(p, "watchpoint", 10) == 0) {
1570             bpType = Breakpoint::watchpoint;
1571             p += 10;
1572         }
1573         while (isspace(*p))
1574             p++;
1575         if (*p == '\0')
1576             break;
1577         // get Disp
1578         char disp = *p++;
1579         while (*p != '\0' && !isspace(*p))      /* "keep" or "del" */
1580             p++;
1581         while (isspace(*p))
1582             p++;
1583         if (*p == '\0')
1584             break;
1585         // get Enb
1586         char enable = *p++;
1587         while (*p != '\0' && !isspace(*p))      /* "y" or "n" */
1588             p++;
1589         while (isspace(*p))
1590             p++;
1591         if (*p == '\0')
1592             break;
1593         // the address, if present
1594         if (bpType == Breakpoint::breakpoint &&
1595             strncmp(p, "0x", 2) == 0)
1596         {
1597             const char* start = p;
1598             while (*p != '\0' && !isspace(*p))
1599                 p++;
1600             address = FROM_LATIN1(start, p-start);
1601             while (isspace(*p) && *p != '\n')
1602                 p++;
1603             if (*p == '\0')
1604                 break;
1605         } else {
1606             address = QString();
1607         }
1608         // remainder is location, hit and ignore count, condition
1609         hits = 0;
1610         ignoreCount = 0;
1611         condition = QString();
1612         end = strchr(p, '\n');
1613         if (end == 0) {
1614             location = p;
1615             p += location.length();
1616         } else {
1617             location = FROM_LATIN1(p, end-p).stripWhiteSpace();
1618             p = end+1;                  /* skip over \n */
1619         }
1620
1621         // may be continued in next line
1622         while (isspace(*p)) {   /* p points to beginning of line */
1623             // skip white space at beginning of line
1624             while (isspace(*p))
1625                 p++;
1626
1627             // seek end of line
1628             end = strchr(p, '\n');
1629             if (end == 0)
1630                 end = p+strlen(p);
1631
1632             if (strncmp(p, "breakpoint already hit", 22) == 0) {
1633                 // extract the hit count
1634                 p += 22;
1635                 hits = strtol(p, &dummy, 10);
1636                 TRACE(QString().sprintf("hit count %d", hits));
1637             } else if (strncmp(p, "stop only if ", 13) == 0) {
1638                 // extract condition
1639                 p += 13;
1640                 condition = FROM_LATIN1(p, end-p).stripWhiteSpace();
1641                 TRACE("condition: "+condition);
1642             } else if (strncmp(p, "ignore next ", 12) == 0) {
1643                 // extract ignore count
1644                 p += 12;
1645                 ignoreCount = strtol(p, &dummy, 10);
1646                 TRACE(QString().sprintf("ignore count %d", ignoreCount));
1647             } else {
1648                 // indeed a continuation
1649                 location += " " + FROM_LATIN1(p, end-p).stripWhiteSpace();
1650             }
1651             p = end;
1652             if (*p != '\0')
1653                 p++;                    /* skip '\n' */
1654         }
1655         Breakpoint* bp = new Breakpoint;
1656         bp->id = bpNum;
1657         bp->type = bpType;
1658         bp->temporary = disp == 'd';
1659         bp->enabled = enable == 'y';
1660         bp->location = location;
1661         bp->address = address;
1662         bp->hitCount = hits;
1663         bp->ignoreCount = ignoreCount;
1664         bp->condition = condition;
1665         brks.append(bp);
1666     }
1667     return true;
1668 }
1669
1670 bool GdbDriver::parseThreadList(const char* output, QList<ThreadInfo>& threads)
1671 {
1672     if (strcmp(output, "\n") == 0 || strncmp(output, "No stack.", 9) == 0) {
1673         // no threads
1674         return true;
1675     }
1676
1677     int id;
1678     QString systag;
1679     QString func, file;
1680     int lineNo;
1681     DbgAddr address;
1682
1683     const char* p = output;
1684     while (*p != '\0') {
1685         // seach look for thread id, watching out for  the focus indicator
1686         bool hasFocus = false;
1687         while (isspace(*p))             /* may be \n from prev line: see "No stack" below */
1688             p++;
1689         if (*p == '*') {
1690             hasFocus = true;
1691             p++;
1692             // there follows only whitespace
1693         }
1694         char* end;
1695         id = strtol(p, &end, 10);
1696         if (p == end) {
1697             // syntax error: no number found; bail out
1698             return true;
1699         }
1700         p = end;
1701
1702         // skip space
1703         while (isspace(*p))
1704             p++;
1705
1706         /*
1707          * Now follows the thread's SYSTAG. It is terminated by two blanks.
1708          */
1709         end = strstr(p, "  ");
1710         if (end == 0) {
1711             // syntax error; bail out
1712             return true;
1713         }
1714         systag = FROM_LATIN1(p, end-p);
1715         p = end+2;
1716
1717         /*
1718          * Now follows a standard stack frame. Sometimes, however, gdb
1719          * catches a thread at an instant where it doesn't have a stack.
1720          */
1721         if (strncmp(p, "[No stack.]", 11) != 0) {
1722             ::parseFrameInfo(p, func, file, lineNo, address);
1723         } else {
1724             func = "[No stack]";
1725             file = QString();
1726             lineNo = -1;
1727             address = QString();
1728             p += 11;                    /* \n is skipped above */
1729         }
1730
1731         ThreadInfo* thr = new ThreadInfo;
1732         thr->id = id;
1733         thr->threadName = systag;
1734         thr->hasFocus = hasFocus;
1735         thr->function = func;
1736         thr->fileName = file;
1737         thr->lineNo = lineNo;
1738         thr->address = address;
1739         threads.append(thr);
1740     }
1741     return true;
1742 }
1743
1744 bool GdbDriver::parseBreakpoint(const char* output, int& id,
1745                                 QString& file, int& lineNo)
1746 {
1747     const char* o = output;
1748     // skip lines of that begin with "(Cannot find"
1749     while (strncmp(o, "(Cannot find", 12) == 0) {
1750         o = strchr(o, '\n');
1751         if (o == 0)
1752             return false;
1753         o++;                            /* skip newline */
1754     }
1755
1756     if (strncmp(o, "Breakpoint ", 11) != 0)
1757         return false;
1758
1759     // breakpoint id
1760     output += 11;                       /* skip "Breakpoint " */
1761     char* p;
1762     int num = strtoul(output, &p, 10);
1763     if (p == o)
1764         return false;
1765
1766     // file name
1767     char* fileStart = strstr(p, "file ");
1768     if (fileStart == 0)
1769         return false;
1770     fileStart += 5;
1771
1772     // line number
1773     char* numStart = strstr(fileStart, ", line ");
1774     QString fileName = FROM_LATIN1(fileStart, numStart-fileStart);
1775     numStart += 7;
1776     int line = strtoul(numStart, &p, 10);
1777     if (numStart == p)
1778         return false;
1779
1780     id = num;
1781     file = fileName;
1782     lineNo = line-1;                    /* zero-based! */
1783     return true;
1784 }
1785
1786 void GdbDriver::parseLocals(const char* output, QList<VarTree>& newVars)
1787 {
1788     // check for possible error conditions
1789     if (strncmp(output, "No symbol table", 15) == 0)
1790     {
1791         return;
1792     }
1793
1794     while (*output != '\0') {
1795         while (isspace(*output))
1796             output++;
1797         if (*output == '\0')
1798             break;
1799         // skip occurrences of "No locals" and "No args"
1800         if (strncmp(output, "No locals", 9) == 0 ||
1801             strncmp(output, "No arguments", 12) == 0)
1802         {
1803             output = strchr(output, '\n');
1804             if (output == 0) {
1805                 break;
1806             }
1807             continue;
1808         }
1809
1810         VarTree* variable = parseVar(output);
1811         if (variable == 0) {
1812             break;
1813         }
1814         // do not add duplicates
1815         for (VarTree* o = newVars.first(); o != 0; o = newVars.next()) {
1816             if (o->getText() == variable->getText()) {
1817                 delete variable;
1818                 goto skipDuplicate;
1819             }
1820         }
1821         newVars.append(variable);
1822     skipDuplicate:;
1823     }
1824 }
1825
1826 bool GdbDriver::parsePrintExpr(const char* output, bool wantErrorValue, VarTree*& var)
1827 {
1828     // check for error conditions
1829     if (parseErrorMessage(output, var, wantErrorValue))
1830     {
1831         return false;
1832     } else {
1833         // parse the variable
1834         var = parseVar(output);
1835         return true;
1836     }
1837 }
1838
1839 bool GdbDriver::parseChangeWD(const char* output, QString& message)
1840 {
1841     bool isGood = false;
1842     message = QString(output).simplifyWhiteSpace();
1843     if (message.isEmpty()) {
1844         message = i18n("New working directory: ") + m_programWD;
1845         isGood = true;
1846     }
1847     return isGood;
1848 }
1849
1850 bool GdbDriver::parseChangeExecutable(const char* output, QString& message)
1851 {
1852     message = output;
1853
1854     m_haveCoreFile = false;
1855
1856     /*
1857      * The command is successful if there is no output or the single
1858      * message (no debugging symbols found)...
1859      */
1860     return
1861         output[0] == '\0' ||
1862         strcmp(output, "(no debugging symbols found)...") == 0;
1863 }
1864
1865 bool GdbDriver::parseCoreFile(const char* output)
1866 {
1867     // if command succeeded, gdb emits a line starting with "#0 "
1868     m_haveCoreFile = strstr(output, "\n#0 ") != 0;
1869     return m_haveCoreFile;
1870 }
1871
1872 uint GdbDriver::parseProgramStopped(const char* output, QString& message)
1873 {
1874     // optionally: "program changed, rereading symbols",
1875     // followed by:
1876     // "Program exited normally"
1877     // "Program terminated with wignal SIGSEGV"
1878     // "Program received signal SIGINT" or other signal
1879     // "Breakpoint..."
1880
1881     // go through the output, line by line, checking what we have
1882     const char* start = output - 1;
1883     uint flags = SFprogramActive;
1884     message = QString();
1885     do {
1886         start++;                        /* skip '\n' */
1887
1888         if (strncmp(start, "Program ", 8) == 0 ||
1889             strncmp(start, "ptrace: ", 8) == 0) {
1890             /*
1891              * When we receive a signal, the program remains active.
1892              *
1893              * Special: If we "stopped" in a corefile, the string "Program
1894              * terminated with signal"... is displayed. (Normally, we see
1895              * "Program received signal"... when a signal happens.)
1896              */
1897             if (strncmp(start, "Program exited", 14) == 0 ||
1898                 (strncmp(start, "Program terminated", 18) == 0 && !m_haveCoreFile) ||
1899                 strncmp(start, "ptrace: ", 8) == 0)
1900             {
1901                 flags &= ~SFprogramActive;
1902             }
1903
1904             // set message
1905             const char* endOfMessage = strchr(start, '\n');
1906             if (endOfMessage == 0)
1907                 endOfMessage = start + strlen(start);
1908             message = FROM_LATIN1(start, endOfMessage-start);
1909         } else if (strncmp(start, "Breakpoint ", 11) == 0) {
1910             /*
1911              * We stopped at a (permanent) breakpoint (gdb doesn't tell us
1912              * that it stopped at a temporary breakpoint).
1913              */
1914             flags |= SFrefreshBreak;
1915         } else if (strstr(start, "re-reading symbols.") != 0) {
1916             flags |= SFrefreshSource;
1917         }
1918
1919         // next line, please
1920         start = strchr(start, '\n');
1921     } while (start != 0);
1922
1923     /*
1924      * Gdb only notices when new threads have appeared, but not when a
1925      * thread finishes. So we always have to assume that the list of
1926      * threads has changed.
1927      */
1928     flags |= SFrefreshThreads;
1929
1930     return flags;
1931 }
1932
1933 void GdbDriver::parseSharedLibs(const char* output, QStrList& shlibs)
1934 {
1935     if (strncmp(output, "No shared libraries loaded", 26) == 0)
1936         return;
1937
1938     // parse the table of shared libraries
1939
1940     // strip off head line
1941     output = strchr(output, '\n');
1942     if (output == 0)
1943         return;
1944     output++;                           /* skip '\n' */
1945     QString shlibName;
1946     while (*output != '\0') {
1947         // format of a line is
1948         // 0x404c5000  0x40580d90  Yes         /lib/libc.so.5
1949         // 3 blocks of non-space followed by space
1950         for (int i = 0; *output != '\0' && i < 3; i++) {
1951             while (*output != '\0' && !isspace(*output)) {      /* non-space */
1952                 output++;
1953             }
1954             while (isspace(*output)) {  /* space */
1955                 output++;
1956             }
1957         }
1958         if (*output == '\0')
1959             return;
1960         const char* start = output;
1961         output = strchr(output, '\n');
1962         if (output == 0)
1963             output = start + strlen(start);
1964         shlibName = FROM_LATIN1(start, output-start);
1965         if (*output != '\0')
1966             output++;
1967         shlibs.append(shlibName);
1968         TRACE("found shared lib " + shlibName);
1969     }
1970 }
1971
1972 bool GdbDriver::parseFindType(const char* output, QString& type)
1973 {
1974     if (strncmp(output, "type = ", 7) != 0)
1975         return false;
1976
1977     /*
1978      * Everything else is the type. We strip off all white-space from the
1979      * type.
1980      */
1981     output += 7;
1982     type = output;
1983     type.replace(QRegExp("\\s+"), "");
1984     return true;
1985 }
1986
1987 void GdbDriver::parseRegisters(const char* output, QList<RegisterInfo>& regs)
1988 {
1989     if (strncmp(output, "The program has no registers now", 32) == 0) {
1990         return;
1991     }
1992
1993     QString regName;
1994     QString value;
1995
1996     // parse register values
1997     while (*output != '\0')
1998     {
1999         // skip space at the start of the line
2000         while (isspace(*output))
2001             output++;
2002
2003         // register name
2004         const char* start = output;
2005         while (*output != '\0' && !isspace(*output))
2006             output++;
2007         if (*output == '\0')
2008             break;
2009         regName = FROM_LATIN1(start, output-start);
2010
2011         // skip space
2012         while (isspace(*output))
2013             output++;
2014
2015         RegisterInfo* reg = new RegisterInfo;
2016         reg->regName = regName;
2017
2018         /*
2019          * If we find a brace now, this is a vector register. We look for
2020          * the closing brace and treat the result as cooked value.
2021          */
2022         if (*output == '{')
2023         {
2024             start = output;
2025             skipNested(output, '{', '}');
2026             value = FROM_LATIN1(start, output-start).simplifyWhiteSpace();
2027             // skip space, but not the end of line
2028             while (isspace(*output) && *output != '\n')
2029                 output++;
2030             // get rid of the braces at the begining and the end
2031             value.remove(0, 1);
2032             if (value[value.length()-1] == '}') {
2033                 value = value.left(value.length()-1);
2034             }
2035             // gdb 5.3 doesn't print a separate set of raw values
2036             if (*output == '{') {
2037                 // another set of vector follows
2038                 // what we have so far is the raw value
2039                 reg->rawValue = value;
2040
2041                 start = output;
2042                 skipNested(output, '{', '}');
2043                 value = FROM_LATIN1(start, output-start).simplifyWhiteSpace();
2044                 // skip to the end of line
2045                 while (*output != '\0' && *output != '\n')
2046                     output++;
2047                 // get rid of the braces at the begining and the end
2048                 value.remove(0, 1);
2049                 if (value[value.length()-1] == '}') {
2050                     value = value.left(value.length()-1);
2051                 }
2052             }
2053             reg->cookedValue = value;
2054         }
2055         else
2056         {
2057             // the rest of the line is the register value
2058             start = output;
2059             output = strchr(output,'\n');
2060             if (output == 0)
2061                 output = start + strlen(start);
2062             value = FROM_LATIN1(start, output-start).simplifyWhiteSpace();
2063
2064             /*
2065              * We split the raw from the cooked values. For this purpose,
2066              * we split off the first token (separated by whitespace). It
2067              * is the raw value. The remainder of the line is the cooked
2068              * value.
2069              */
2070             int pos = value.find(' ');
2071             if (pos < 0) {
2072                 reg->rawValue = value;
2073                 reg->cookedValue = QString();
2074             } else {
2075                 reg->rawValue = value.left(pos);
2076                 reg->cookedValue = value.mid(pos+1);
2077                 /*
2078                  * Some modern gdbs explicitly say: "0.1234 (raw 0x3e4567...)".
2079                  * Here the raw value is actually in the second part.
2080                  */
2081                 if (reg->cookedValue.left(5) == "(raw ") {
2082                     QString raw = reg->cookedValue.right(reg->cookedValue.length()-5);
2083                     if (raw[raw.length()-1] == ')')     /* remove closing bracket */
2084                         raw = raw.left(raw.length()-1);
2085                     reg->cookedValue = reg->rawValue;
2086                     reg->rawValue = raw;
2087                 }
2088             }
2089         }
2090         if (*output != '\0')
2091             output++;                   /* skip '\n' */
2092
2093         regs.append(reg);
2094     }
2095 }
2096
2097 bool GdbDriver::parseInfoLine(const char* output, QString& addrFrom, QString& addrTo)
2098 {
2099     // "is at address" or "starts at address"
2100     const char* start = strstr(output, "s at address ");
2101     if (start == 0)
2102         return false;
2103
2104     start += 13;
2105     const char* p = start;
2106     while (*p != '\0' && !isspace(*p))
2107         p++;
2108     addrFrom = FROM_LATIN1(start, p-start);
2109
2110     start = strstr(p, "and ends at ");
2111     if (start == 0) {
2112         addrTo = addrFrom;
2113         return true;
2114     }
2115
2116     start += 12;
2117     p = start;
2118     while (*p != '\0' && !isspace(*p))
2119         p++;
2120     addrTo = FROM_LATIN1(start, p-start);
2121
2122     return true;
2123 }
2124
2125 void GdbDriver::parseDisassemble(const char* output, QList<DisassembledCode>& code)
2126 {
2127     code.clear();
2128
2129     if (strncmp(output, "Dump of assembler", 17) != 0) {
2130         // error message?
2131         DisassembledCode c;
2132         c.code = output;
2133         code.append(new DisassembledCode(c));
2134         return;
2135     }
2136
2137     // remove first line
2138     const char* p = strchr(output, '\n');
2139     if (p == 0)
2140         return;                         /* not a regular output */
2141
2142     p++;
2143
2144     // remove last line
2145     const char* end = strstr(output, "End of assembler");
2146     if (end == 0)
2147         end = p + strlen(p);
2148
2149     DbgAddr address;
2150
2151     // remove function offsets from the lines
2152     while (p != end)
2153     {
2154         const char* start = p;
2155         // address
2156         while (p != end && !isspace(*p))
2157             p++;
2158         address = FROM_LATIN1(start, p-start);
2159
2160         // function name (enclosed in '<>', followed by ':')
2161         while (p != end && *p != '<')
2162             p++;
2163         if (*p == '<')
2164             skipNested(p, '<', '>');
2165         if (*p == ':')
2166             p++;
2167
2168         // space until code
2169         while (p != end && isspace(*p))
2170             p++;
2171
2172         // code until end of line
2173         start = p;
2174         while (p != end && *p != '\n')
2175             p++;
2176         if (p != end)                   /* include '\n' */
2177             p++;
2178
2179         DisassembledCode* c = new DisassembledCode;
2180         c->address = address;
2181         c->code = FROM_LATIN1(start, p-start);
2182         code.append(c);
2183     }
2184 }
2185
2186 QString GdbDriver::parseMemoryDump(const char* output, QList<MemoryDump>& memdump)
2187 {
2188     if (isErrorExpr(output)) {
2189         // error; strip space
2190         QString msg = output;
2191         return msg.stripWhiteSpace();
2192     }
2193
2194     const char* p = output;             /* save typing */
2195     DbgAddr addr;
2196     QString dump;
2197
2198     // the address
2199     while (*p != 0) {
2200         const char* start = p;
2201         while (*p != '\0' && *p != ':' && !isspace(*p))
2202             p++;
2203         addr = FROM_LATIN1(start, p-start);
2204         if (*p != ':') {
2205             // parse function offset
2206             while (isspace(*p))
2207                 p++;
2208             start = p;
2209             while (*p != '\0' && !(*p == ':' && isspace(p[1])))
2210                 p++;
2211             addr.fnoffs = FROM_LATIN1(start, p-start);
2212         }
2213         if (*p == ':')
2214             p++;
2215         // skip space; this may skip a new-line char!
2216         while (isspace(*p))
2217             p++;
2218         // everything to the end of the line is the memory dump
2219         const char* end = strchr(p, '\n');
2220         if (end != 0) {
2221             dump = FROM_LATIN1(p, end-p);
2222             p = end+1;
2223         } else {
2224             dump = FROM_LATIN1(p, strlen(p));
2225             p += strlen(p);
2226         }
2227         MemoryDump* md = new MemoryDump;
2228         md->address = addr;
2229         md->dump = dump;
2230         memdump.append(md);
2231     }
2232
2233     return QString();
2234 }
2235
2236
2237 #include "gdbdriver.moc"