MdeModulePkg/Universal/EbcDxe/EbcDebugger/EdbCommand.c

   1 /** @file
   2
   3 Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
   4 SPDX-License-Identifier: BSD-2-Clause-Patent
   5
   6
   7 **/
   8
   9 #include "Edb.h"
  10
  11 //
  12 // Debugger Command Table
  13 //
  14 EFI_DEBUGGER_COMMAND_SET  mDebuggerCommandSet[] = {
  15   //
  16   // Execution
  17   //
  18   {
  19     L"G",
  20     L"G/[F5]             - continue to run the program\n",
  21     L"The go command is used to cause the debugger to not interrupt execution of the EBC image. The debugger will only break execution of the interpreter if an exception is encountered (including an EBC breakpoint).\n\n",
  22     L"G [til <Address|Symbol>]\n"
  23     L"  (No Argument) - It means continue run the program.\n"
  24     L"  til           - It means continuing run the program till IP is the Address.\n"
  25     L"  <Address>     - The hexical address user want to break at.\n"
  26     L"  <Symbol>      - The symbol name for target address user want to break at. It has following format [MapFileName:]SymbolName\n",
  27     L"Execution:\n",
  28     {SCAN_F5, CHAR_NULL},
  29     DebuggerGo
  30   },
  31   {
  32     L"T",
  33     L"T/[F8]             - step into\n",
  34     L"The step into command will cause the EBC debugger to step a single instruction. If the instruction is a call to internal code (CALL), then the debugger will break at the new function CALL.\n\n",
  35     L"T\n"
  36     L"  (No Argument)\n",
  37     L"",
  38     {SCAN_F8, CHAR_NULL},
  39     DebuggerStepInto
  40   },
  41   {
  42     L"P",
  43     L"P/[F10]            - step over\n",
  44     L"The step over command will cause the EBC debugger to step a single instruction. If the instruction is a call to internal code (CALL), then the external call will be made and the debugger will break at the instruction following the CALL.\n\n",
  45     L"P\n"
  46     L"  (No Argument)\n",
  47     L"",
  48     {SCAN_F10, CHAR_NULL},
  49     DebuggerStepOver
  50   },
  51   {
  52     L"O",
  53     L"O/[F11]            - step out\n",
  54     L"The step out command causes the EBC debugger to step out function calls. The function will be executed, but the debugger will stop after the called function returns.\n\n",
  55     L"O\n"
  56     L"  (No Argument)\n",
  57     L"",
  58     {SCAN_F11, CHAR_NULL},
  59     DebuggerStepOut
  60   },
  61   {
  62     L"Q",
  63     L"Q                  - reset the debugger to default value and go\n",
  64     L"The quit command will reset the debugger to default value and go.\n\n",
  65     L"Q\n"
  66     L"  (No Argument)\n",
  67     L"",
  68     {SCAN_NULL, CHAR_NULL},
  69     DebuggerQuit
  70   },
  71   //
  72   // Break
  73   //
  74   {
  75     L"BOC",
  76     L"BO[C|CX|R|E|T|K]   - break on CALL/CALLEX/RET/Entrypoint/Native Thunk/Key\n",
  77     L"Enabling break-on-call will cause the debugger to halt execution and display the debugger prompt prior to executing any EBC CALL (to EBC) instructions.\n\n",
  78     L"BOC [on|off]\n"
  79     L"  (No Argument) - show current state\n"
  80     L"  on            - enable break-on-call\n"
  81     L"  off           - disable break-on-call\n",
  82     L"Break:\n",
  83     {SCAN_NULL, CHAR_NULL},
  84     DebuggerBreakOnCALL
  85   },
  86   {
  87     L"BOCX",
  88     L"",
  89     L"Enabling break-on-callex will cause the debugger to halt execution and display the debugger prompt prior to executing EBC CALLEX (thunk out) instructions.\n\n",
  90     L"BOCX [on|off]\n"
  91     L"  (No Argument) - show current state\n"
  92     L"  on            - enable break-on-callex\n"
  93     L"  off           - disable break-on-callex\n",
  94     L"",
  95     {SCAN_NULL, CHAR_NULL},
  96     DebuggerBreakOnCALLEX
  97   },
  98   {
  99     L"BOR",
 100     L"",
 101     L"Enabling break-on-return will cause the debugger to halt execution and display the debugger prompt prior to executing EBC RET instructions.\n\n",
 102     L"BOR [on|off]\n"
 103     L"  (No Argument) - show current state\n"
 104     L"  on            - enable break-on-return\n"
 105     L"  off           - disable break-on-return\n",
 106     L"",
 107     {SCAN_NULL, CHAR_NULL},
 108     DebuggerBreakOnRET
 109   },
 110   {
 111     L"BOE",
 112     L"",
 113     L"Enabling break-on-entrypoint will cause the debugger to halt execution and display the debugger prompt prior to start a driver entry point. (Default is on)\n\n",
 114     L"BOE [on|off]\n"
 115     L"  (No Argument) - show current state\n"
 116     L"  on            - enable break-on-entrypoint\n"
 117     L"  off           - disable break-on-entrypoint\n",
 118     L"",
 119     {SCAN_NULL, CHAR_NULL},
 120     DebuggerBreakOnEntrypoint
 121   },
 122   {
 123     L"BOT",
 124     L"",
 125     L"Enabling break-on-thunk will cause the debugger to halt execution and display the debugger prompt prior to start native call EBC thunk. (Default is on)\n\n",
 126     L"BOT [on|off]\n"
 127     L"  (No Argument) - show current state\n"
 128     L"  on            - enable break-on-thunk\n"
 129     L"  off           - disable break-on-thunk\n",
 130     L"",
 131     {SCAN_NULL, CHAR_NULL},
 132     DebuggerBreakOnThunk
 133   },
 134   {
 135     L"BOK",
 136     L"",
 137     L"Enabling break-on-key will cause the debugger to halt execution and display the debugger prompt after press any key.\n\n",
 138     L"BOK [on|off]\n"
 139     L"  (No Argument) - show current state\n"
 140     L"  on            - enable break-on-key\n"
 141     L"  off           - disable break-on-key\n",
 142     L"",
 143     {SCAN_NULL, CHAR_NULL},
 144     DebuggerBreakOnKey
 145   },
 146   {
 147     L"BL",
 148     L"B[L|P|C|D|E]       - breakpoint list/set/clear/disable/enable\n",
 149     L"List Breakpoint\n\n",
 150     L"BL\n"
 151     L"  (No Argument) - show the state for current breakpoint\n",
 152     L"",
 153     {SCAN_NULL, CHAR_NULL},
 154     DebuggerBreakpointList
 155   },
 156   {
 157     L"BP",
 158     L"",
 159     L"Set Breakpoint\n\n",
 160     L"BP <Address|Symbol>\n"
 161     L"  <Address> - Hexical breakpoint address\n"
 162     L"  <Symbol>  - Symbol name for breakpoint address. It has following format [MapFileName:]SymbolName.\n",
 163     L"",
 164     {SCAN_NULL, CHAR_NULL},
 165     DebuggerBreakpointSet
 166   },
 167   {
 168     L"BC",
 169     L"",
 170     L"Clear Breakpoint\n\n",
 171     L"BC <Index>|*\n"
 172     L"  <Index>   - Decimal breakpoint index, which can be got from BL command\n"
 173     L"  *         - For all the breakpoint\n",
 174     L"",
 175     {SCAN_NULL, CHAR_NULL},
 176     DebuggerBreakpointClear
 177   },
 178   {
 179     L"BD",
 180     L"",
 181     L"Disable Breakpoint\n\n",
 182     L"BD <Index>|*\n"
 183     L"  <Index>   - Decimal breakpoint index, which can be got from BL command\n"
 184     L"  *         - For all the breakpoint\n",
 185     L"",
 186     {SCAN_NULL, CHAR_NULL},
 187     DebuggerBreakpointDisable
 188   },
 189   {
 190     L"BE",
 191     L"",
 192     L"Enable Breakpoint\n\n",
 193     L"BE <Index>|*\n"
 194     L"  <Index>   - Decimal breakpoint index, which can be got from BL command\n"
 195     L"  *         - For all the breakpoint\n",
 196     L"",
 197     {SCAN_NULL, CHAR_NULL},
 198     DebuggerBreakpointEnable
 199   },
 200   //
 201   // Information
 202   //
 203   {
 204     L"K",
 205     L"K                  - show/clear call-stack\n",
 206     L"The call-stack command will show or clear the current call-stack.\n\n",
 207     L"K [p [<ParameterNum>]|c]\n"
 208     L"  (No Argument) - Show current call-stack\n"
 209     L"  p             - Show current call-stack with parameters\n"
 210     L"  ParameterNum  - Decimal call-stack parameters number, 8 by default, 16 as max\n"
 211     L"  c             - Clear current call-stack\n",
 212     L"Information:\n",
 213     {SCAN_NULL, CHAR_NULL},
 214     DebuggerCallStack
 215   },
 216   {
 217     L"TRACE",
 218     L"TRACE              - show/clear trace instruction branch\n",
 219     L"The trace command will show or clear the latest instruction branch.\n\n",
 220     L"TRACE [c]\n"
 221     L"  (No Argument) - Show current instrcution branch\n"
 222     L"  c             - Clear current instruction branch\n",
 223     L"",
 224     {SCAN_NULL, CHAR_NULL},
 225     DebuggerInstructionBranch
 226   },
 227   {
 228     L"R",
 229     L"R/[F2]             - display/modify register\n",
 230     L"The register command is used to display or modify the contents of EBC VM registers. (R0~R7, Flags, IP)\n\n",
 231     L"R [<Register> <Value>]\n"
 232     L"  (No Argument) - Display all registers\n"
 233     L"  <Register>    - EBC VM register name (R0~R7, Flags, ControlFlags, and IP\n"
 234     L"  <Value>       - The Hexical value of register\n",
 235     L"",
 236     {SCAN_F2, CHAR_NULL},
 237     DebuggerRegister
 238   },
 239   {
 240     L"L",
 241     L"L/[F4]             - show/load instruction assembly count\n",
 242     L"The list assembly command will disassemble instructions starting with the current EBC VM instruction pointer. (by default 5 instructions)\n\n",
 243     L"L [<Count>]\n"
 244     L"  (No Argument) - List current assembly code\n"
 245     L"  Count         - The decimal instruction assembly count\n",
 246     L"",
 247     {SCAN_F4, CHAR_NULL},
 248     DebuggerList
 249   },
 250   {
 251     L"SCOPE",
 252     L"SCOPE              - load scope address\n",
 253     L"The scope command will disassemble instructions starting with the Scope. (by default current EBC VM IP)\n\n",
 254     L"SCOPE <Address|Symbol>\n"
 255     L"  <Address> - The Hexical address where user wants to see the assembly code\n"
 256     L"  <Symbol>  - Symbol name for scope address. It has following format [MapFileName:]SymbolName.\n",
 257     L"",
 258     {SCAN_NULL, CHAR_NULL},
 259     DebuggerScope
 260   },
 261   {
 262     L"DB",
 263     L"[D|E][B|W|D|Q]     - display/modify memory\n",
 264     L"Display BYTES Memory\n\n",
 265     L"DB <Address|Symbol> [<Count>]\n"
 266     L"  <Address> - The hexical memory address\n"
 267     L"  <Symbol>  - Symbol name for memory address. It has following format [MapFileName:]SymbolName.\n"
 268     L"  <Count>   - The hexical memory count (not set means 1)\n",
 269     L"",
 270     {SCAN_NULL, CHAR_NULL},
 271     DebuggerMemoryDB
 272   },
 273   {
 274     L"DW",
 275     L"",
 276     L"Display WORDS Memory\n\n",
 277     L"DW <Address|Symbol> [<Count>]\n"
 278     L"  <Address> - The hexical memory address\n"
 279     L"  <Symbol>  - Symbol name for memory address. It has following format [MapFileName:]SymbolName.\n"
 280     L"  <Count>   - The hexical memory count (not set means 1)\n",
 281     L"",
 282     {SCAN_NULL, CHAR_NULL},
 283     DebuggerMemoryDW
 284   },
 285   {
 286     L"DD",
 287     L"",
 288     L"Display DWORDS Memory\n\n",
 289     L"DD <Address|Symbol> [<Count>]\n"
 290     L"  <Address> - The hexical memory address\n"
 291     L"  <Symbol>  - Symbol name for memory address. It has following format [MapFileName:]SymbolName.\n"
 292     L"  <Count>   - The hexical memory count (not set means 1)\n",
 293     L"",
 294     {SCAN_NULL, CHAR_NULL},
 295     DebuggerMemoryDD
 296   },
 297   {
 298     L"DQ",
 299     L"",
 300     L"Display QWORDS Memory\n\n",
 301     L"DQ <Address|Symbol> [<Count>]\n"
 302     L"  <Address> - The hexical memory address\n"
 303     L"  <Symbol>  - Symbol name for memory address. It has following format [MapFileName:]SymbolName.\n"
 304     L"  <Count>   - The hexical memory count (not set means 1)\n",
 305     L"",
 306     {SCAN_NULL, CHAR_NULL},
 307     DebuggerMemoryDQ
 308   },
 309   {
 310     L"EB",
 311     L"",
 312     L"Enter BYTES Memory\n\n",
 313     L"EB <Address|Symbol> <Value>\n"
 314     L"  <Address> - The hexical memory address\n"
 315     L"  <Symbol>  - Symbol name for memory address. It has following format [MapFileName:]SymbolName.\n"
 316     L"  <Value>   - The hexical memory value\n",
 317     L"",
 318     {SCAN_NULL, CHAR_NULL},
 319     DebuggerMemoryEB
 320   },
 321   {
 322     L"EW",
 323     L"",
 324     L"Enter WORDS Memory\n\n",
 325     L"EW <Address|Symbol> <Value>\n"
 326     L"  <Address> - The hexical memory address\n"
 327     L"  <Symbol>  - Symbol name for memory address. It has following format [MapFileName:]SymbolName.\n"
 328     L"  <Value>   - The hexical memory value\n",
 329     L"",
 330     {SCAN_NULL, CHAR_NULL},
 331     DebuggerMemoryEW
 332   },
 333   {
 334     L"ED",
 335     L"",
 336     L"Enter DWORDS Memory\n\n",
 337     L"ED <Address|Symbol> <Value>\n"
 338     L"  <Address> - The hexical memory address\n"
 339     L"  <Symbol>  - Symbol name for memory address. It has following format [MapFileName:]SymbolName.\n"
 340     L"  <Value>   - The hexical memory value\n",
 341     L"",
 342     {SCAN_NULL, CHAR_NULL},
 343     DebuggerMemoryED
 344   },
 345   {
 346     L"EQ",
 347     L"",
 348     L"Enter QWORDS Memory\n\n",
 349     L"EQ <Address|Symbol> <Value>\n"
 350     L"  <Address> - The hexical memory address\n"
 351     L"  <Symbol>  - Symbol name for memory address. It has following format [MapFileName:]SymbolName.\n"
 352     L"  <Value>   - The hexical memory value\n",
 353     L"",
 354     {SCAN_NULL, CHAR_NULL},
 355     DebuggerMemoryEQ
 356   },
 357   //
 358   // Symbol
 359   //
 360   {
 361     L"LN",
 362     L"LN                 - list the symbol\n",
 363     L"The show symbol command will list all the current symbol. It can list the symbol in one symbol file, or list the same symbol in all the files. It can also list the symbol according to nearest address.\n\n",
 364     L"LN [[F <SymbolFile>] [S <Symbol>]] | <Address>\n"
 365     L"  (No Argument)  - List all the symbol\n"
 366     L"  F <SymbolFile> - List the symbol in this symbol file only\n"
 367     L"  S <Symbol>     - List this symbol only\n"
 368     L"  <Address>      - The hexical memory address, which user want to find the symbol for.\n",
 369     L"Symbol:\n",
 370     {SCAN_NULL, CHAR_NULL},
 371     DebuggerListSymbol
 372   },
 373   {
 374     L"LOADSYMBOL",
 375     L"[UN]LOADSYMBOL     - load/unload the symbol file\n",
 376     L"The load symbol command will load the ebc map file. Then it parses the function name and global variable, and the print real name when do the disassembly. (Symbol file name should be XXX.MAP)\n\n",
 377     L"LOADSYMBOL <SymbolFile> [a]\n"
 378     L"  SymbolFile - The EBC symbol file (Its name should be XXX.MAP)\n"
 379     L"  a          - Automatically load code files in the same dir\n",
 380     L"",
 381     {SCAN_NULL, CHAR_NULL},
 382     DebuggerLoadSymbol
 383   },
 384   {
 385     L"UNLOADSYMBOL",
 386     L"",
 387     L"The unload symbol command will unload the ebc map and cod file. After that the name will not be print.\n\n",
 388     L"UNLOADSYMBOL <SymbolFile>\n"
 389     L"  SymbolFile - The EBC symbol file (Its name should be XXX.MAP)\n",
 390     L"",
 391     {SCAN_NULL, CHAR_NULL},
 392     DebuggerUnloadSymbol
 393   },
 394   {
 395     L"LOADCODE",
 396     L"[UN]LOADCODE       - load/unload the code file\n",
 397     L"The load code command will load the ebc cod file. Then it parses the cod file, and the print source code when do the disassembly. (Code file name should be XXX.COD)\n\n",
 398     L"LOADCODE <CodeFile> <SymbolFile>\n"
 399     L"  CodeFile   - The EBC code file (Its name should be XXX.COD)\n"
 400     L"  SymbolFile - The EBC symbol file (Its name should be XXX.MAP)\n",
 401     L"",
 402     {SCAN_NULL, CHAR_NULL},
 403     DebuggerLoadCode
 404   },
 405   {
 406     L"UNLOADCODE",
 407     L"",
 408     L"The unload code command will unload the ebc cod file. After that the source code will not be print.\n\n",
 409     L"UNLOADCODE <CodeFile> <SymbolFile>\n"
 410     L"  CodeFile   - The EBC code file (Its name should be XXX.COD)\n"
 411     L"  SymbolFile - The EBC symbol file (Its name should be XXX.MAP)\n",
 412     L"",
 413     {SCAN_NULL, CHAR_NULL},
 414     DebuggerUnloadCode
 415   },
 416   {
 417     L"DISPLAYSYMBOL",
 418     L"DISPLAYSYMBOL/[F3] - disable/enable the symbol output\n",
 419     L"",
 420     L"The display symbol command will configure the symbol show or not-show when disassembly.\n\n"
 421     L"DISPLAYSYMBOL [on|off]\n"
 422     L"  (No Argument) - swtich symbol output state to another one\n"
 423     L"  on            - enable symbol output\n"
 424     L"  off           - disable symbol output\n",
 425     L"",
 426     {SCAN_F3, CHAR_NULL},
 427     DebuggerDisplaySymbol
 428   },
 429   {
 430     L"DISPLAYCODE",
 431     L"DISPLAYCODE/[F6]   - disable/enable the source code only output\n",
 432     L"",
 433     L"The display code command will configure the source code only show or misc source code with assembly.\n\n"
 434     L"DISPLAYCODE [on|off]\n"
 435     L"  (No Argument) - swtich source only output state to another one\n"
 436     L"  on            - enable source only output\n"
 437     L"  off           - disable source only output\n",
 438     L"",
 439     {SCAN_F6, CHAR_NULL},
 440     DebuggerDisplayCode
 441   },
 442   //
 443   // Other
 444   //
 445   {
 446     L"H",
 447     L"",
 448     L"The help command will print help information for each command\n\n",
 449     L"H [<Command>]\n",
 450     L"",
 451     {SCAN_F1, CHAR_NULL},
 452     DebuggerHelp
 453   },
 454 /*
 455   //
 456   // Extended
 457   //
 458   {
 459     L"!IB",
 460     L"![I|O][B|W|D]      - display/modify IO\n",
 461     L"",
 462     L"!IB <Address>\n",
 463     L"Extended:\n",
 464     {SCAN_NULL, CHAR_NULL},
 465     DebuggerExtIoIB
 466   },
 467   {
 468     L"!IW",
 469     L"",
 470     L"",
 471     L"!IW <Address>\n",
 472     L"",
 473     {SCAN_NULL, CHAR_NULL},
 474     DebuggerExtIoIW
 475   },
 476   {
 477     L"!ID",
 478     L"",
 479     L"",
 480     L"!ID <Address>\n",
 481     L"",
 482     {SCAN_NULL, CHAR_NULL},
 483     DebuggerExtIoID
 484   },
 485   {
 486     L"!OB",
 487     L"",
 488     L"",
 489     L"!OB <Address> <Value>\n",
 490     L"",
 491     {SCAN_NULL, CHAR_NULL},
 492     DebuggerExtIoOB
 493   },
 494   {
 495     L"!OW",
 496     L"",
 497     L"",
 498     L"!OW <Address> <Value>\n",
 499     L"",
 500     {SCAN_NULL, CHAR_NULL},
 501     DebuggerExtIoOW
 502   },
 503   {
 504     L"!OD",
 505     L"",
 506     L"",
 507     L"!OD <Address> <Value>\n",
 508     L"",
 509     {SCAN_NULL, CHAR_NULL},
 510     DebuggerExtIoOD
 511   },
 512   {
 513     L"!PCIL",
 514     L"!PCIL              - list PCI device, with BAR\n",
 515     L"",
 516     L"!PCIL [B]\n",
 517     L"",
 518     {SCAN_NULL, CHAR_NULL},
 519     DebuggerExtPciPCIL
 520   },
 521   {
 522     L"!PCID",
 523     L"!PCID              - show PCI space\n",
 524     L"",
 525     L"!PCID Bus Device Function [H|B|E]\n",
 526     L"",
 527     {SCAN_NULL, CHAR_NULL},
 528     DebuggerExtPciPCID
 529   },
 530   {
 531     L"!CFGB",
 532     L"!CFG[B|W|D]        - show/modify PCI space",
 533     L"",
 534     L"!CFGB <Address> [<Value>]\n",
 535     L"",
 536     {SCAN_NULL, CHAR_NULL},
 537     DebuggerExtPciCFGB
 538   },
 539   {
 540     L"!CFGW",
 541     L"",
 542     L"",
 543     L"!CFGW <Address> [<Value>]\n",
 544     L"",
 545     {SCAN_NULL, CHAR_NULL},
 546     DebuggerExtPciCFGW
 547   },
 548   {
 549     L"!CFGD",
 550     L"",
 551     L"",
 552     L"!CFGD <Address> [<Value>]\n",
 553     L"",
 554     {SCAN_NULL, CHAR_NULL},
 555     DebuggerExtPciCFGD
 556   },
 557 */
 558   {
 559     NULL,
 560     NULL,
 561     NULL,
 562     NULL,
 563     NULL,
 564     {SCAN_NULL, CHAR_NULL},
 565     NULL
 566   },
 567 };
 568
 569 /**
 570
 571   Find the command according to name.
 572
 573   @param  CommandName   - Command Name
 574   @param  CommandArg    - Command Argument
 575
 576   @return Not NULL        - The DebuggerCommand is found successfully
 577   @return NULL            - not found
 578
 579 **/
 580 EFI_DEBUGGER_COMMAND
 581 MatchDebuggerCommand (
 582   IN CHAR16    *CommandName,
 583   IN CHAR16    **CommandArg
 584   )
 585 {
 586   UINTN  Index;
 587   CHAR16 *Temp;
 588
 589   //
 590   // Get Command Name
 591   //
 592   Temp = StrGetNewTokenLine (CommandName, L" ");
 593   CommandName = Temp;
 594   //
 595   // Get Command Argument
 596   //
 597   Temp = StrGetNextTokenLine (L" ");
 598   *CommandArg = Temp;
 599
 600   if (CommandName == NULL) {
 601     return NULL;
 602   }
 603
 604   //
 605   // Go through each command, check the CommandName
 606   //
 607   for (Index = 0; mDebuggerCommandSet[Index].CommandName != NULL; Index++) {
 608     if (StriCmp (CommandName, mDebuggerCommandSet[Index].CommandName) == 0) {
 609       //
 610       // Found
 611       //
 612       return mDebuggerCommandSet[Index].CommandFunc;
 613     }
 614   }
 615
 616   //
 617   // Not found
 618   //
 619   return NULL;
 620 }
 621
 622 /**
 623
 624   Find the command name according to the function key.
 625
 626   @param  CommandKey    - Command Function Key
 627
 628   @return Not NULL        - The DebuggerName is found successfully
 629   @return NULL            - not found
 630
 631 **/
 632 CHAR16 *
 633 GetCommandNameByKey (
 634   IN EFI_INPUT_KEY CommandKey
 635   )
 636 {
 637   UINTN  Index;
 638
 639   //
 640   // Go through each command, check the CommandKey
 641   //
 642   for (Index = 0; mDebuggerCommandSet[Index].CommandName != NULL; Index++) {
 643     if ((mDebuggerCommandSet[Index].CommandKey.UnicodeChar == CommandKey.UnicodeChar) &&
 644         (mDebuggerCommandSet[Index].CommandKey.ScanCode    == CommandKey.ScanCode)) {
 645       //
 646       // Found
 647       //
 648       return mDebuggerCommandSet[Index].CommandName;
 649     }
 650   }
 651
 652   //
 653   // Not found
 654   //
 655   return NULL;
 656 }