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dbinput.c revision 1.26
      1 /*******************************************************************************
      2  *
      3  * Module Name: dbinput - user front-end to the AML debugger
      4  *
      5  ******************************************************************************/
      6 
      7 /*
      8  * Copyright (C) 2000 - 2023, Intel Corp.
      9  * All rights reserved.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions, and the following disclaimer,
     16  *    without modification.
     17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     18  *    substantially similar to the "NO WARRANTY" disclaimer below
     19  *    ("Disclaimer") and any redistribution must be conditioned upon
     20  *    including a substantially similar Disclaimer requirement for further
     21  *    binary redistribution.
     22  * 3. Neither the names of the above-listed copyright holders nor the names
     23  *    of any contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * Alternatively, this software may be distributed under the terms of the
     27  * GNU General Public License ("GPL") version 2 as published by the Free
     28  * Software Foundation.
     29  *
     30  * NO WARRANTY
     31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     41  * POSSIBILITY OF SUCH DAMAGES.
     42  */
     43 
     44 #include "acpi.h"
     45 #include "accommon.h"
     46 #include "acdebug.h"
     47 
     48 #ifdef ACPI_APPLICATION
     49 #include "acapps.h"
     50 #endif
     51 
     52 #define _COMPONENT          ACPI_CA_DEBUGGER
     53         ACPI_MODULE_NAME    ("dbinput")
     54 
     55 
     56 /* Local prototypes */
     57 
     58 static UINT32
     59 AcpiDbGetLine (
     60     char                    *InputBuffer);
     61 
     62 static UINT32
     63 AcpiDbMatchCommand (
     64     char                    *UserCommand);
     65 
     66 static void
     67 AcpiDbDisplayCommandInfo (
     68     const char              *Command,
     69     BOOLEAN                 DisplayAll);
     70 
     71 static void
     72 AcpiDbDisplayHelp (
     73     char                    *Command);
     74 
     75 static BOOLEAN
     76 AcpiDbMatchCommandHelp (
     77     const char                  *Command,
     78     const ACPI_DB_COMMAND_HELP  *Help);
     79 
     80 
     81 /*
     82  * Top-level debugger commands.
     83  *
     84  * This list of commands must match the string table below it
     85  */
     86 enum AcpiExDebuggerCommands
     87 {
     88     CMD_NOT_FOUND = 0,
     89     CMD_NULL,
     90     CMD_ALL,
     91     CMD_ALLOCATIONS,
     92     CMD_ARGS,
     93     CMD_ARGUMENTS,
     94     CMD_BREAKPOINT,
     95     CMD_BUSINFO,
     96     CMD_CALL,
     97     CMD_DEBUG,
     98     CMD_DISASSEMBLE,
     99     CMD_DISASM,
    100     CMD_DUMP,
    101     CMD_EVALUATE,
    102     CMD_EXECUTE,
    103     CMD_EXIT,
    104     CMD_FIELDS,
    105     CMD_FIND,
    106     CMD_GO,
    107     CMD_HANDLERS,
    108     CMD_HELP,
    109     CMD_HELP2,
    110     CMD_HISTORY,
    111     CMD_HISTORY_EXE,
    112     CMD_HISTORY_LAST,
    113     CMD_INFORMATION,
    114     CMD_INTEGRITY,
    115     CMD_INTO,
    116     CMD_LEVEL,
    117     CMD_LIST,
    118     CMD_LOCALS,
    119     CMD_LOCKS,
    120     CMD_METHODS,
    121     CMD_NAMESPACE,
    122     CMD_NOTIFY,
    123     CMD_OBJECTS,
    124     CMD_OSI,
    125     CMD_OWNER,
    126     CMD_PATHS,
    127     CMD_PREDEFINED,
    128     CMD_PREFIX,
    129     CMD_QUIT,
    130     CMD_REFERENCES,
    131     CMD_RESOURCES,
    132     CMD_RESULTS,
    133     CMD_SET,
    134     CMD_STATS,
    135     CMD_STOP,
    136     CMD_TABLES,
    137     CMD_TEMPLATE,
    138     CMD_TRACE,
    139     CMD_TREE,
    140     CMD_TYPE,
    141 #ifdef ACPI_APPLICATION
    142     CMD_ENABLEACPI,
    143     CMD_EVENT,
    144     CMD_GPE,
    145     CMD_GPES,
    146     CMD_SCI,
    147     CMD_SLEEP,
    148 
    149     CMD_CLOSE,
    150     CMD_LOAD,
    151     CMD_OPEN,
    152     CMD_UNLOAD,
    153 
    154     CMD_TERMINATE,
    155     CMD_BACKGROUND,
    156     CMD_THREADS,
    157 
    158     CMD_TEST,
    159 	CMD_INTERRUPT,
    160 #endif
    161 };
    162 
    163 #define CMD_FIRST_VALID     2
    164 
    165 
    166 /* Second parameter is the required argument count */
    167 
    168 static const ACPI_DB_COMMAND_INFO   AcpiGbl_DbCommands[] =
    169 {
    170     {"<NOT FOUND>",  0},
    171     {"<NULL>",       0},
    172     {"ALL",          1},
    173     {"ALLOCATIONS",  0},
    174     {"ARGS",         0},
    175     {"ARGUMENTS",    0},
    176     {"BREAKPOINT",   1},
    177     {"BUSINFO",      0},
    178     {"CALL",         0},
    179     {"DEBUG",        1},
    180     {"DISASSEMBLE",  1},
    181     {"DISASM",       1},
    182     {"DUMP",         1},
    183     {"EVALUATE",     1},
    184     {"EXECUTE",      1},
    185     {"EXIT",         0},
    186     {"FIELDS",       1},
    187     {"FIND",         1},
    188     {"GO",           0},
    189     {"HANDLERS",     0},
    190     {"HELP",         0},
    191     {"?",            0},
    192     {"HISTORY",      0},
    193     {"!",            1},
    194     {"!!",           0},
    195     {"INFORMATION",  0},
    196     {"INTEGRITY",    0},
    197     {"INTO",         0},
    198     {"LEVEL",        0},
    199     {"LIST",         0},
    200     {"LOCALS",       0},
    201     {"LOCKS",        0},
    202     {"METHODS",      0},
    203     {"NAMESPACE",    0},
    204     {"NOTIFY",       2},
    205     {"OBJECTS",      0},
    206     {"OSI",          0},
    207     {"OWNER",        1},
    208     {"PATHS",        0},
    209     {"PREDEFINED",   0},
    210     {"PREFIX",       0},
    211     {"QUIT",         0},
    212     {"REFERENCES",   1},
    213     {"RESOURCES",    0},
    214     {"RESULTS",      0},
    215     {"SET",          3},
    216     {"STATS",        1},
    217     {"STOP",         0},
    218     {"TABLES",       0},
    219     {"TEMPLATE",     1},
    220     {"TRACE",        1},
    221     {"TREE",         0},
    222     {"TYPE",         1},
    223 #ifdef ACPI_APPLICATION
    224     {"ENABLEACPI",   0},
    225     {"EVENT",        1},
    226     {"GPE",          1},
    227     {"GPES",         0},
    228     {"SCI",          0},
    229     {"SLEEP",        0},
    230 
    231     {"CLOSE",        0},
    232     {"LOAD",         1},
    233     {"OPEN",         1},
    234     {"UNLOAD",       1},
    235 
    236     {"TERMINATE",    0},
    237     {"BACKGROUND",   1},
    238     {"THREADS",      3},
    239 
    240     {"TEST",         1},
    241     {"INTERRUPT",    1},
    242 #endif
    243     {NULL,           0}
    244 };
    245 
    246 /*
    247  * Help for all debugger commands. First argument is the number of lines
    248  * of help to output for the command.
    249  *
    250  * Note: Some commands are not supported by the kernel-level version of
    251  * the debugger.
    252  */
    253 static const ACPI_DB_COMMAND_HELP   AcpiGbl_DbCommandHelp[] =
    254 {
    255     {0, "\nNamespace Access:",                  "\n"},
    256     {1, "  Businfo",                            "Display system bus info\n"},
    257     {1, "  Disassemble <Method>",               "Disassemble a control method\n"},
    258     {1, "  Find <AcpiName> (? is wildcard)",    "Find ACPI name(s) with wildcards\n"},
    259     {1, "  Integrity",                          "Validate namespace integrity\n"},
    260     {1, "  Methods",                            "Display list of loaded control methods\n"},
    261     {1, "  Fields <AddressSpaceId>",            "Display list of loaded field units by space ID\n"},
    262     {1, "  Namespace [Object] [Depth]",         "Display loaded namespace tree/subtree\n"},
    263     {1, "  Notify <Object> <Value>",            "Send a notification on Object\n"},
    264     {1, "  Objects [ObjectType]",               "Display summary of all objects or just given type\n"},
    265     {1, "  Owner <OwnerId> [Depth]",            "Display loaded namespace by object owner\n"},
    266     {1, "  Paths",                              "Display full pathnames of namespace objects\n"},
    267     {1, "  Predefined",                         "Check all predefined names\n"},
    268     {1, "  Prefix [<Namepath>]",                "Set or Get current execution prefix\n"},
    269     {1, "  References <Addr>",                  "Find all references to object at addr\n"},
    270     {1, "  Resources [DeviceName]",             "Display Device resources (no arg = all devices)\n"},
    271     {1, "  Set N <NamedObject> <Value>",        "Set value for named integer\n"},
    272     {1, "  Template <Object>",                  "Format/dump a Buffer/ResourceTemplate\n"},
    273     {1, "  Type <Object>",                      "Display object type\n"},
    274 
    275     {0, "\nControl Method Execution:",          "\n"},
    276     {1, "  All <NameSeg>",                      "Evaluate all objects named NameSeg\n"},
    277     {1, "  Evaluate <Namepath> [Arguments]",    "Evaluate object or control method\n"},
    278     {1, "  Execute <Namepath> [Arguments]",     "Synonym for Evaluate\n"},
    279 #ifdef ACPI_APPLICATION
    280     {1, "  Background <Namepath> [Arguments]",  "Evaluate object/method in a separate thread\n"},
    281     {1, "  Thread <Threads><Loops><NamePath>",  "Spawn threads to execute method(s)\n"},
    282 #endif
    283     {1, "  Debug <Namepath> [Arguments]",       "Single-Step a control method\n"},
    284     {7, "  [Arguments] formats:",               "Control method argument formats\n"},
    285     {1, "     Hex Integer",                     "Integer\n"},
    286     {1, "     \"Ascii String\"",                "String\n"},
    287     {1, "     (Hex Byte List)",                 "Buffer\n"},
    288     {1, "         (01 42 7A BF)",               "Buffer example (4 bytes)\n"},
    289     {1, "     [Package Element List]",          "Package\n"},
    290     {1, "         [0x01 0x1234 \"string\"]",    "Package example (3 elements)\n"},
    291 
    292     {0, "\nMiscellaneous:",                     "\n"},
    293     {1, "  Allocations",                        "Display list of current memory allocations\n"},
    294     {2, "  Dump <Address>|<Namepath>",          "\n"},
    295     {0, "       [Byte|Word|Dword|Qword]",       "Display ACPI objects or memory\n"},
    296     {1, "  Handlers",                           "Info about global handlers\n"},
    297     {1, "  Help [Command]",                     "This help screen or individual command\n"},
    298     {1, "  History",                            "Display command history buffer\n"},
    299     {1, "  Level <DebugLevel>] [console]",      "Get/Set debug level for file or console\n"},
    300     {1, "  Locks",                              "Current status of internal mutexes\n"},
    301     {1, "  Osi [Install|Remove <name>]",        "Display or modify global _OSI list\n"},
    302     {1, "  Quit or Exit",                       "Exit this command\n"},
    303     {8, "  Stats <SubCommand>",                 "Display namespace and memory statistics\n"},
    304     {1, "     Allocations",                     "Display list of current memory allocations\n"},
    305     {1, "     Memory",                          "Dump internal memory lists\n"},
    306     {1, "     Misc",                            "Namespace search and mutex stats\n"},
    307     {1, "     Objects",                         "Summary of namespace objects\n"},
    308     {1, "     Sizes",                           "Sizes for each of the internal objects\n"},
    309     {1, "     Stack",                           "Display CPU stack usage\n"},
    310     {1, "     Tables",                          "Info about current ACPI table(s)\n"},
    311     {1, "  Tables",                             "Display info about loaded ACPI tables\n"},
    312 #ifdef ACPI_APPLICATION
    313     {1, "  Terminate",                          "Delete namespace and all internal objects\n"},
    314 #endif
    315     {1, "  ! <CommandNumber>",                  "Execute command from history buffer\n"},
    316     {1, "  !!",                                 "Execute last command again\n"},
    317 
    318     {0, "\nMethod and Namespace Debugging:",    "\n"},
    319     {5, "  Trace <State> [<Namepath>] [Once]",  "Trace control method execution\n"},
    320     {1, "     Enable",                          "Enable all messages\n"},
    321     {1, "     Disable",                         "Disable tracing\n"},
    322     {1, "     Method",                          "Enable method execution messages\n"},
    323     {1, "     Opcode",                          "Enable opcode execution messages\n"},
    324     {3, "  Test <TestName>",                    "Invoke a debug test\n"},
    325     {1, "     Objects",                         "Read/write/compare all namespace data objects\n"},
    326     {1, "     Predefined",                      "Validate all ACPI predefined names (_STA, etc.)\n"},
    327     {1, "  Execute predefined",                 "Execute all predefined (public) methods\n"},
    328 
    329     {0, "\nControl Method Single-Step Execution:","\n"},
    330     {1, "  Arguments (or Args)",                "Display method arguments\n"},
    331     {1, "  Breakpoint <AmlOffset>",             "Set an AML execution breakpoint\n"},
    332     {1, "  Call",                               "Run to next control method invocation\n"},
    333     {1, "  Go",                                 "Allow method to run to completion\n"},
    334     {1, "  Information",                        "Display info about the current method\n"},
    335     {1, "  Into",                               "Step into (not over) a method call\n"},
    336     {1, "  List [# of Aml Opcodes]",            "Display method ASL statements\n"},
    337     {1, "  Locals",                             "Display method local variables\n"},
    338     {1, "  Results",                            "Display method result stack\n"},
    339     {1, "  Set <A|L> <#> <Value>",              "Set method data (Arguments/Locals)\n"},
    340     {1, "  Stop",                               "Terminate control method\n"},
    341     {1, "  Tree",                               "Display control method calling tree\n"},
    342     {1, "  <Enter>",                            "Single step next AML opcode (over calls)\n"},
    343 
    344 #ifdef ACPI_APPLICATION
    345     {0, "\nFile Operations:",                   "\n"},
    346     {1, "  Close",                              "Close debug output file\n"},
    347     {1, "  Load <Input Filename>",              "Load ACPI table from a file\n"},
    348     {1, "  Open <Output Filename>",             "Open a file for debug output\n"},
    349     {1, "  Unload <Namepath>",                  "Unload an ACPI table via namespace object\n"},
    350 
    351     {0, "\nHardware Simulation:",               "\n"},
    352     {1, "  EnableAcpi",                         "Enable ACPI (hardware) mode\n"},
    353     {1, "  Event <F|G> <Value>",                "Generate AcpiEvent (Fixed/GPE)\n"},
    354     {1, "  Gpe <GpeNum> [GpeBlockDevice]",      "Simulate a GPE\n"},
    355     {1, "  Gpes",                               "Display info on all GPE devices\n"},
    356     {1, "  Sci",                                "Generate an SCI\n"},
    357     {1, "  Sleep [SleepState]",                 "Simulate sleep/wake sequence(s) (0-5)\n"},
    358     {1, "  Interrupt <GSIV>",                   "Simulate an interrupt\n"},
    359 #endif
    360     {0, NULL, NULL}
    361 };
    362 
    363 
    364 /*******************************************************************************
    365  *
    366  * FUNCTION:    AcpiDbMatchCommandHelp
    367  *
    368  * PARAMETERS:  Command             - Command string to match
    369  *              Help                - Help table entry to attempt match
    370  *
    371  * RETURN:      TRUE if command matched, FALSE otherwise
    372  *
    373  * DESCRIPTION: Attempt to match a command in the help table in order to
    374  *              print help information for a single command.
    375  *
    376  ******************************************************************************/
    377 
    378 static BOOLEAN
    379 AcpiDbMatchCommandHelp (
    380     const char                  *Command,
    381     const ACPI_DB_COMMAND_HELP  *Help)
    382 {
    383     const char              *Invocation = Help->Invocation;
    384     UINT32                  LineCount;
    385 
    386 
    387     /* Valid commands in the help table begin with a couple of spaces */
    388 
    389     if (*Invocation != ' ')
    390     {
    391         return (FALSE);
    392     }
    393 
    394     while (*Invocation == ' ')
    395     {
    396         Invocation++;
    397     }
    398 
    399     /* Match command name (full command or substring) */
    400 
    401     while ((*Command) && (*Invocation) && (*Invocation != ' '))
    402     {
    403         if (tolower ((int) *Command) != tolower ((int) *Invocation))
    404         {
    405             return (FALSE);
    406         }
    407 
    408         Invocation++;
    409         Command++;
    410     }
    411 
    412     /* Print the appropriate number of help lines */
    413 
    414     LineCount = Help->LineCount;
    415     while (LineCount)
    416     {
    417         AcpiOsPrintf ("%-38s : %s", Help->Invocation, Help->Description);
    418         Help++;
    419         LineCount--;
    420     }
    421 
    422     return (TRUE);
    423 }
    424 
    425 
    426 /*******************************************************************************
    427  *
    428  * FUNCTION:    AcpiDbDisplayCommandInfo
    429  *
    430  * PARAMETERS:  Command             - Command string to match
    431  *              DisplayAll          - Display all matching commands, or just
    432  *                                    the first one (substring match)
    433  *
    434  * RETURN:      None
    435  *
    436  * DESCRIPTION: Display help information for a Debugger command.
    437  *
    438  ******************************************************************************/
    439 
    440 static void
    441 AcpiDbDisplayCommandInfo (
    442     const char              *Command,
    443     BOOLEAN                 DisplayAll)
    444 {
    445     const ACPI_DB_COMMAND_HELP  *Next;
    446     BOOLEAN                     Matched;
    447 
    448 
    449     Next = AcpiGbl_DbCommandHelp;
    450     while (Next->Invocation)
    451     {
    452         Matched = AcpiDbMatchCommandHelp (Command, Next);
    453         if (!DisplayAll && Matched)
    454         {
    455             return;
    456         }
    457 
    458         Next++;
    459     }
    460 }
    461 
    462 
    463 /*******************************************************************************
    464  *
    465  * FUNCTION:    AcpiDbDisplayHelp
    466  *
    467  * PARAMETERS:  Command             - Optional command string to display help.
    468  *                                    if not specified, all debugger command
    469  *                                    help strings are displayed
    470  *
    471  * RETURN:      None
    472  *
    473  * DESCRIPTION: Display help for a single debugger command, or all of them.
    474  *
    475  ******************************************************************************/
    476 
    477 static void
    478 AcpiDbDisplayHelp (
    479     char                    *Command)
    480 {
    481     const ACPI_DB_COMMAND_HELP  *Next = AcpiGbl_DbCommandHelp;
    482 
    483 
    484     if (!Command)
    485     {
    486         /* No argument to help, display help for all commands */
    487 
    488         AcpiOsPrintf ("\nSummary of AML Debugger Commands\n\n");
    489 
    490         while (Next->Invocation)
    491         {
    492             AcpiOsPrintf ("%-38s%s", Next->Invocation, Next->Description);
    493             Next++;
    494         }
    495         AcpiOsPrintf ("\n");
    496 
    497     }
    498     else
    499     {
    500         /* Display help for all commands that match the substring */
    501 
    502         AcpiDbDisplayCommandInfo (Command, TRUE);
    503     }
    504 }
    505 
    506 
    507 /*******************************************************************************
    508  *
    509  * FUNCTION:    AcpiDbGetNextToken
    510  *
    511  * PARAMETERS:  String          - Command buffer
    512  *              Next            - Return value, end of next token
    513  *
    514  * RETURN:      Pointer to the start of the next token.
    515  *
    516  * DESCRIPTION: Command line parsing. Get the next token on the command line
    517  *
    518  ******************************************************************************/
    519 
    520 char *
    521 AcpiDbGetNextToken (
    522     char                    *String,
    523     char                    **Next,
    524     ACPI_OBJECT_TYPE        *ReturnType)
    525 {
    526     char                    *Start;
    527     UINT32                  Depth;
    528     ACPI_OBJECT_TYPE        Type = ACPI_TYPE_INTEGER;
    529 
    530 
    531     /* At end of buffer? */
    532 
    533     if (!String || !(*String))
    534     {
    535         return (NULL);
    536     }
    537 
    538     /* Remove any spaces at the beginning, ignore blank lines */
    539 
    540     while (*String && isspace ((int) *String))
    541     {
    542         String++;
    543     }
    544 
    545     if (!(*String))
    546     {
    547         return (NULL);
    548     }
    549 
    550     switch (*String)
    551     {
    552     case '"':
    553 
    554         /* This is a quoted string, scan until closing quote */
    555 
    556         String++;
    557         Start = String;
    558         Type = ACPI_TYPE_STRING;
    559 
    560         /* Find end of string */
    561 
    562         while (*String && (*String != '"'))
    563         {
    564             String++;
    565         }
    566         break;
    567 
    568     case '(':
    569 
    570         /* This is the start of a buffer, scan until closing paren */
    571 
    572         String++;
    573         Start = String;
    574         Type = ACPI_TYPE_BUFFER;
    575 
    576         /* Find end of buffer */
    577 
    578         while (*String && (*String != ')'))
    579         {
    580             String++;
    581         }
    582         break;
    583 
    584     case '{':
    585 
    586         /* This is the start of a field unit, scan until closing brace */
    587 
    588         String++;
    589         Start = String;
    590         Type = ACPI_TYPE_FIELD_UNIT;
    591 
    592         /* Find end of buffer */
    593 
    594         while (*String && (*String != '}'))
    595         {
    596             String++;
    597         }
    598         break;
    599 
    600     case '[':
    601 
    602         /* This is the start of a package, scan until closing bracket */
    603 
    604         String++;
    605         Depth = 1;
    606         Start = String;
    607         Type = ACPI_TYPE_PACKAGE;
    608 
    609         /* Find end of package (closing bracket) */
    610 
    611         while (*String)
    612         {
    613             /* Handle String package elements */
    614 
    615             if (*String == '"')
    616             {
    617                 /* Find end of string */
    618 
    619                 String++;
    620                 while (*String && (*String != '"'))
    621                 {
    622                     String++;
    623                 }
    624                 if (!(*String))
    625                 {
    626                     break;
    627                 }
    628             }
    629             else if (*String == '[')
    630             {
    631                 Depth++;         /* A nested package declaration */
    632             }
    633             else if (*String == ']')
    634             {
    635                 Depth--;
    636                 if (Depth == 0) /* Found final package closing bracket */
    637                 {
    638                     break;
    639                 }
    640             }
    641 
    642             String++;
    643         }
    644         break;
    645 
    646     default:
    647 
    648         Start = String;
    649 
    650         /* Find end of token */
    651 
    652         while (*String && !isspace ((int) *String))
    653         {
    654             String++;
    655         }
    656         break;
    657     }
    658 
    659     if (!(*String))
    660     {
    661         *Next = NULL;
    662     }
    663     else
    664     {
    665         *String = 0;
    666         *Next = String + 1;
    667     }
    668 
    669     *ReturnType = Type;
    670     return (Start);
    671 }
    672 
    673 
    674 /*******************************************************************************
    675  *
    676  * FUNCTION:    AcpiDbGetLine
    677  *
    678  * PARAMETERS:  InputBuffer         - Command line buffer
    679  *
    680  * RETURN:      Count of arguments to the command
    681  *
    682  * DESCRIPTION: Get the next command line from the user. Gets entire line
    683  *              up to the next newline
    684  *
    685  ******************************************************************************/
    686 
    687 static UINT32
    688 AcpiDbGetLine (
    689     char                    *InputBuffer)
    690 {
    691     UINT32                  i;
    692     UINT32                  Count;
    693     char                    *Next;
    694     char                    *This;
    695 
    696 
    697     if (AcpiUtSafeStrcpy (AcpiGbl_DbParsedBuf, sizeof (AcpiGbl_DbParsedBuf),
    698         InputBuffer))
    699     {
    700         AcpiOsPrintf (
    701             "Buffer overflow while parsing input line (max %u characters)\n",
    702             (UINT32) sizeof (AcpiGbl_DbParsedBuf));
    703         return (0);
    704     }
    705 
    706     This = AcpiGbl_DbParsedBuf;
    707     for (i = 0; i < ACPI_DEBUGGER_MAX_ARGS; i++)
    708     {
    709         AcpiGbl_DbArgs[i] = AcpiDbGetNextToken (This, &Next,
    710             &AcpiGbl_DbArgTypes[i]);
    711         if (!AcpiGbl_DbArgs[i])
    712         {
    713             break;
    714         }
    715 
    716         This = Next;
    717     }
    718 
    719     /* Uppercase the actual command */
    720 
    721     AcpiUtStrupr (AcpiGbl_DbArgs[0]);
    722 
    723     Count = i;
    724     if (Count)
    725     {
    726         Count--;  /* Number of args only */
    727     }
    728 
    729     return (Count);
    730 }
    731 
    732 
    733 /*******************************************************************************
    734  *
    735  * FUNCTION:    AcpiDbMatchCommand
    736  *
    737  * PARAMETERS:  UserCommand             - User command line
    738  *
    739  * RETURN:      Index into command array, -1 if not found
    740  *
    741  * DESCRIPTION: Search command array for a command match
    742  *
    743  ******************************************************************************/
    744 
    745 static UINT32
    746 AcpiDbMatchCommand (
    747     char                    *UserCommand)
    748 {
    749     UINT32                  i;
    750 
    751 
    752     if (!UserCommand || UserCommand[0] == 0)
    753     {
    754         return (CMD_NULL);
    755     }
    756 
    757     for (i = CMD_FIRST_VALID; AcpiGbl_DbCommands[i].Name; i++)
    758     {
    759         if (strstr (
    760             ACPI_CAST_PTR (char, AcpiGbl_DbCommands[i].Name), UserCommand) ==
    761             AcpiGbl_DbCommands[i].Name)
    762         {
    763             return (i);
    764         }
    765     }
    766 
    767     /* Command not recognized */
    768 
    769     return (CMD_NOT_FOUND);
    770 }
    771 
    772 
    773 /*******************************************************************************
    774  *
    775  * FUNCTION:    AcpiDbCommandDispatch
    776  *
    777  * PARAMETERS:  InputBuffer         - Command line buffer
    778  *              WalkState           - Current walk
    779  *              Op                  - Current (executing) parse op
    780  *
    781  * RETURN:      Status
    782  *
    783  * DESCRIPTION: Command dispatcher.
    784  *
    785  ******************************************************************************/
    786 
    787 ACPI_STATUS
    788 AcpiDbCommandDispatch (
    789     char                    *InputBuffer,
    790     ACPI_WALK_STATE         *WalkState,
    791     ACPI_PARSE_OBJECT       *Op)
    792 {
    793     UINT32                  Temp;
    794     UINT64                  Temp64;
    795     UINT32                  CommandIndex;
    796     UINT32                  ParamCount;
    797     char                    *CommandLine;
    798     ACPI_STATUS             Status = AE_CTRL_TRUE;
    799 
    800 
    801     /* If AcpiTerminate has been called, terminate this thread */
    802 
    803     if (AcpiGbl_DbTerminateLoop)
    804     {
    805         return (AE_CTRL_TERMINATE);
    806     }
    807 
    808     /* Find command and add to the history buffer */
    809 
    810     ParamCount = AcpiDbGetLine (InputBuffer);
    811     CommandIndex = AcpiDbMatchCommand (AcpiGbl_DbArgs[0]);
    812 
    813     /*
    814      * We don't want to add the !! command to the history buffer. It
    815      * would cause an infinite loop because it would always be the
    816      * previous command.
    817      */
    818     if (CommandIndex != CMD_HISTORY_LAST)
    819     {
    820         AcpiDbAddToHistory (InputBuffer);
    821     }
    822 
    823     /* Verify that we have the minimum number of params */
    824 
    825     if (ParamCount < AcpiGbl_DbCommands[CommandIndex].MinArgs)
    826     {
    827         AcpiOsPrintf ("%u parameters entered, [%s] requires %u parameters\n",
    828             ParamCount, AcpiGbl_DbCommands[CommandIndex].Name,
    829             AcpiGbl_DbCommands[CommandIndex].MinArgs);
    830 
    831         AcpiDbDisplayCommandInfo (
    832             AcpiGbl_DbCommands[CommandIndex].Name, FALSE);
    833         return (AE_CTRL_TRUE);
    834     }
    835 
    836     /* Decode and dispatch the command */
    837 
    838     switch (CommandIndex)
    839     {
    840     case CMD_NULL:
    841 
    842         if (Op)
    843         {
    844             return (AE_OK);
    845         }
    846         break;
    847 
    848     case CMD_ALL:
    849 
    850         AcpiOsPrintf ("Executing all objects with NameSeg: %s\n", AcpiGbl_DbArgs[1]);
    851         AcpiDbExecute (AcpiGbl_DbArgs[1],
    852             &AcpiGbl_DbArgs[2], &AcpiGbl_DbArgTypes[2], EX_NO_SINGLE_STEP | EX_ALL);
    853         break;
    854 
    855     case CMD_ALLOCATIONS:
    856 
    857 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
    858         AcpiUtDumpAllocations ((UINT32) -1, NULL);
    859 #endif
    860         break;
    861 
    862     case CMD_ARGS:
    863     case CMD_ARGUMENTS:
    864 
    865         AcpiDbDisplayArguments ();
    866         break;
    867 
    868     case CMD_BREAKPOINT:
    869 
    870         AcpiDbSetMethodBreakpoint (AcpiGbl_DbArgs[1], WalkState, Op);
    871         break;
    872 
    873     case CMD_BUSINFO:
    874 
    875         AcpiDbGetBusInfo ();
    876         break;
    877 
    878     case CMD_CALL:
    879 
    880         AcpiDbSetMethodCallBreakpoint (Op);
    881         Status = AE_OK;
    882         break;
    883 
    884     case CMD_DEBUG:
    885 
    886         AcpiDbExecute (AcpiGbl_DbArgs[1],
    887             &AcpiGbl_DbArgs[2], &AcpiGbl_DbArgTypes[2], EX_SINGLE_STEP);
    888         break;
    889 
    890     case CMD_DISASSEMBLE:
    891     case CMD_DISASM:
    892 
    893 #ifdef ACPI_DISASSEMBLER
    894         (void) AcpiDbDisassembleMethod (AcpiGbl_DbArgs[1]);
    895 #else
    896         AcpiOsPrintf ("The AML Disassembler is not configured/present\n");
    897 #endif
    898         break;
    899 
    900     case CMD_DUMP:
    901 
    902         AcpiDbDecodeAndDisplayObject (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2]);
    903         break;
    904 
    905     case CMD_EVALUATE:
    906     case CMD_EXECUTE:
    907 
    908         AcpiDbExecute (AcpiGbl_DbArgs[1],
    909             &AcpiGbl_DbArgs[2], &AcpiGbl_DbArgTypes[2], EX_NO_SINGLE_STEP);
    910         break;
    911 
    912     case CMD_FIND:
    913 
    914         Status = AcpiDbFindNameInNamespace (AcpiGbl_DbArgs[1]);
    915         break;
    916 
    917     case CMD_FIELDS:
    918 
    919         Status = AcpiUtStrtoul64 (AcpiGbl_DbArgs[1], &Temp64);
    920 
    921         if (ACPI_FAILURE (Status) || Temp64 >= ACPI_NUM_PREDEFINED_REGIONS)
    922         {
    923             AcpiOsPrintf (
    924                 "Invalid address space ID: must be between 0 and %u inclusive\n",
    925                 ACPI_NUM_PREDEFINED_REGIONS - 1);
    926             return (AE_OK);
    927         }
    928 
    929         Status = AcpiDbDisplayFields ((UINT32) Temp64);
    930         break;
    931 
    932     case CMD_GO:
    933 
    934         AcpiGbl_CmSingleStep = FALSE;
    935         return (AE_OK);
    936 
    937     case CMD_HANDLERS:
    938 
    939         AcpiDbDisplayHandlers ();
    940         break;
    941 
    942     case CMD_HELP:
    943     case CMD_HELP2:
    944 
    945         AcpiDbDisplayHelp (AcpiGbl_DbArgs[1]);
    946         break;
    947 
    948     case CMD_HISTORY:
    949 
    950         AcpiDbDisplayHistory ();
    951         break;
    952 
    953     case CMD_HISTORY_EXE: /* ! command */
    954 
    955         CommandLine = AcpiDbGetFromHistory (AcpiGbl_DbArgs[1]);
    956         if (!CommandLine)
    957         {
    958             return (AE_CTRL_TRUE);
    959         }
    960 
    961         Status = AcpiDbCommandDispatch (CommandLine, WalkState, Op);
    962         return (Status);
    963 
    964     case CMD_HISTORY_LAST: /* !! command */
    965 
    966         CommandLine = AcpiDbGetFromHistory (NULL);
    967         if (!CommandLine)
    968         {
    969             return (AE_CTRL_TRUE);
    970         }
    971 
    972         Status = AcpiDbCommandDispatch (CommandLine, WalkState, Op);
    973         return (Status);
    974 
    975     case CMD_INFORMATION:
    976 
    977         AcpiDbDisplayMethodInfo (Op);
    978         break;
    979 
    980     case CMD_INTEGRITY:
    981 
    982         AcpiDbCheckIntegrity ();
    983         break;
    984 
    985     case CMD_INTO:
    986 
    987         if (Op)
    988         {
    989             AcpiGbl_CmSingleStep = TRUE;
    990             return (AE_OK);
    991         }
    992         break;
    993 
    994     case CMD_LEVEL:
    995 
    996         if (ParamCount == 0)
    997         {
    998             AcpiOsPrintf (
    999                 "Current debug level for file output is:    %8.8X\n",
   1000                 AcpiGbl_DbDebugLevel);
   1001             AcpiOsPrintf (
   1002                 "Current debug level for console output is: %8.8X\n",
   1003                 AcpiGbl_DbConsoleDebugLevel);
   1004         }
   1005         else if (ParamCount == 2)
   1006         {
   1007             Temp = AcpiGbl_DbConsoleDebugLevel;
   1008             AcpiGbl_DbConsoleDebugLevel =
   1009                 strtoul (AcpiGbl_DbArgs[1], NULL, 16);
   1010             AcpiOsPrintf (
   1011                 "Debug Level for console output was %8.8X, now %8.8X\n",
   1012                 Temp, AcpiGbl_DbConsoleDebugLevel);
   1013         }
   1014         else
   1015         {
   1016             Temp = AcpiGbl_DbDebugLevel;
   1017             AcpiGbl_DbDebugLevel = strtoul (AcpiGbl_DbArgs[1], NULL, 16);
   1018             AcpiOsPrintf (
   1019                 "Debug Level for file output was %8.8X, now %8.8X\n",
   1020                 Temp, AcpiGbl_DbDebugLevel);
   1021         }
   1022         break;
   1023 
   1024     case CMD_LIST:
   1025 
   1026 #ifdef ACPI_DISASSEMBLER
   1027         AcpiDbDisassembleAml (AcpiGbl_DbArgs[1], Op);
   1028 #else
   1029         AcpiOsPrintf ("The AML Disassembler is not configured/present\n");
   1030 #endif
   1031         break;
   1032 
   1033     case CMD_LOCKS:
   1034 
   1035         AcpiDbDisplayLocks ();
   1036         break;
   1037 
   1038     case CMD_LOCALS:
   1039 
   1040         AcpiDbDisplayLocals ();
   1041         break;
   1042 
   1043     case CMD_METHODS:
   1044 
   1045         Status = AcpiDbDisplayObjects (__UNCONST("METHOD"), AcpiGbl_DbArgs[1]);
   1046         break;
   1047 
   1048     case CMD_NAMESPACE:
   1049 
   1050         AcpiDbDumpNamespace (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2]);
   1051         break;
   1052 
   1053     case CMD_NOTIFY:
   1054 
   1055         Temp = strtoul (AcpiGbl_DbArgs[2], NULL, 0);
   1056         AcpiDbSendNotify (AcpiGbl_DbArgs[1], Temp);
   1057         break;
   1058 
   1059     case CMD_OBJECTS:
   1060 
   1061         AcpiUtStrupr (AcpiGbl_DbArgs[1]);
   1062         Status = AcpiDbDisplayObjects (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2]);
   1063         break;
   1064 
   1065     case CMD_OSI:
   1066 
   1067         AcpiDbDisplayInterfaces (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2]);
   1068         break;
   1069 
   1070     case CMD_OWNER:
   1071 
   1072         AcpiDbDumpNamespaceByOwner (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2]);
   1073         break;
   1074 
   1075     case CMD_PATHS:
   1076 
   1077         AcpiDbDumpNamespacePaths ();
   1078         break;
   1079 
   1080     case CMD_PREFIX:
   1081 
   1082         AcpiDbSetScope (AcpiGbl_DbArgs[1]);
   1083         break;
   1084 
   1085     case CMD_REFERENCES:
   1086 
   1087         AcpiDbFindReferences (AcpiGbl_DbArgs[1]);
   1088         break;
   1089 
   1090     case CMD_RESOURCES:
   1091 
   1092         AcpiDbDisplayResources (AcpiGbl_DbArgs[1]);
   1093         break;
   1094 
   1095     case CMD_RESULTS:
   1096 
   1097         AcpiDbDisplayResults ();
   1098         break;
   1099 
   1100     case CMD_SET:
   1101 
   1102         AcpiDbSetMethodData (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2],
   1103             AcpiGbl_DbArgs[3]);
   1104         break;
   1105 
   1106     case CMD_STATS:
   1107 
   1108         Status = AcpiDbDisplayStatistics (AcpiGbl_DbArgs[1]);
   1109         break;
   1110 
   1111     case CMD_STOP:
   1112 
   1113         return (AE_NOT_IMPLEMENTED);
   1114 
   1115     case CMD_TABLES:
   1116 
   1117         AcpiDbDisplayTableInfo (AcpiGbl_DbArgs[1]);
   1118         break;
   1119 
   1120     case CMD_TEMPLATE:
   1121 
   1122         AcpiDbDisplayTemplate (AcpiGbl_DbArgs[1]);
   1123         break;
   1124 
   1125     case CMD_TRACE:
   1126 
   1127         AcpiDbTrace (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2], AcpiGbl_DbArgs[3]);
   1128         break;
   1129 
   1130     case CMD_TREE:
   1131 
   1132         AcpiDbDisplayCallingTree ();
   1133         break;
   1134 
   1135     case CMD_TYPE:
   1136 
   1137         AcpiDbDisplayObjectType (AcpiGbl_DbArgs[1]);
   1138         break;
   1139 
   1140 #ifdef ACPI_APPLICATION
   1141 
   1142     /* Hardware simulation commands. */
   1143 
   1144     case CMD_ENABLEACPI:
   1145 #if (!ACPI_REDUCED_HARDWARE)
   1146 
   1147         Status = AcpiEnable();
   1148         if (ACPI_FAILURE(Status))
   1149         {
   1150             AcpiOsPrintf("AcpiEnable failed (Status=%X)\n", Status);
   1151             return (Status);
   1152         }
   1153 #endif /* !ACPI_REDUCED_HARDWARE */
   1154         break;
   1155 
   1156     case CMD_EVENT:
   1157 
   1158         AcpiOsPrintf ("Event command not implemented\n");
   1159         break;
   1160 
   1161 	case CMD_INTERRUPT:
   1162 
   1163 		AcpiDbGenerateInterrupt (AcpiGbl_DbArgs[1]);
   1164 		break;
   1165 
   1166     case CMD_GPE:
   1167 
   1168         AcpiDbGenerateGpe (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2]);
   1169         break;
   1170 
   1171     case CMD_GPES:
   1172 
   1173         AcpiDbDisplayGpes ();
   1174         break;
   1175 
   1176     case CMD_SCI:
   1177 
   1178         AcpiDbGenerateSci ();
   1179         break;
   1180 
   1181     case CMD_SLEEP:
   1182 
   1183         Status = AcpiDbSleep (AcpiGbl_DbArgs[1]);
   1184         break;
   1185 
   1186     /* File I/O commands. */
   1187 
   1188     case CMD_CLOSE:
   1189 
   1190         AcpiDbCloseDebugFile ();
   1191         break;
   1192 
   1193     case CMD_LOAD:
   1194         {
   1195             ACPI_NEW_TABLE_DESC     *ListHead = NULL;
   1196 
   1197             Status = AcGetAllTablesFromFile (AcpiGbl_DbArgs[1],
   1198                 ACPI_GET_ALL_TABLES, &ListHead);
   1199             if (ACPI_SUCCESS (Status))
   1200             {
   1201                 AcpiDbLoadTables (ListHead);
   1202             }
   1203         }
   1204         break;
   1205 
   1206     case CMD_OPEN:
   1207 
   1208         AcpiDbOpenDebugFile (AcpiGbl_DbArgs[1]);
   1209         break;
   1210 
   1211     /* User space commands. */
   1212 
   1213     case CMD_TERMINATE:
   1214 
   1215         AcpiDbSetOutputDestination (ACPI_DB_REDIRECTABLE_OUTPUT);
   1216         AcpiUtSubsystemShutdown ();
   1217 
   1218         /*
   1219          * TBD: [Restructure] Need some way to re-initialize without
   1220          * re-creating the semaphores!
   1221          */
   1222 
   1223         AcpiGbl_DbTerminateLoop = TRUE;
   1224         /*  AcpiInitialize (NULL);  */
   1225         break;
   1226 
   1227     case CMD_BACKGROUND:
   1228 
   1229         AcpiDbCreateExecutionThread (AcpiGbl_DbArgs[1], &AcpiGbl_DbArgs[2],
   1230             &AcpiGbl_DbArgTypes[2]);
   1231         break;
   1232 
   1233     case CMD_THREADS:
   1234 
   1235         AcpiDbCreateExecutionThreads (AcpiGbl_DbArgs[1], AcpiGbl_DbArgs[2],
   1236             AcpiGbl_DbArgs[3]);
   1237         break;
   1238 
   1239     /* Debug test commands. */
   1240 
   1241     case CMD_PREDEFINED:
   1242 
   1243         AcpiDbCheckPredefinedNames ();
   1244         break;
   1245 
   1246     case CMD_TEST:
   1247 
   1248         AcpiDbExecuteTest (AcpiGbl_DbArgs[1]);
   1249         break;
   1250 
   1251     case CMD_UNLOAD:
   1252 
   1253         AcpiDbUnloadAcpiTable (AcpiGbl_DbArgs[1]);
   1254         break;
   1255 #endif
   1256 
   1257     case CMD_EXIT:
   1258     case CMD_QUIT:
   1259 
   1260         if (Op)
   1261         {
   1262             AcpiOsPrintf ("Method execution terminated\n");
   1263             return (AE_CTRL_TERMINATE);
   1264         }
   1265 
   1266         if (!AcpiGbl_DbOutputToFile)
   1267         {
   1268             AcpiDbgLevel = ACPI_DEBUG_DEFAULT;
   1269         }
   1270 
   1271 #ifdef ACPI_APPLICATION
   1272         AcpiDbCloseDebugFile ();
   1273 #endif
   1274         AcpiGbl_DbTerminateLoop = TRUE;
   1275         return (AE_CTRL_TERMINATE);
   1276 
   1277     case CMD_NOT_FOUND:
   1278     default:
   1279 
   1280         AcpiOsPrintf ("%s: unknown command\n", AcpiGbl_DbArgs[0]);
   1281         return (AE_CTRL_TRUE);
   1282     }
   1283 
   1284     if (ACPI_SUCCESS (Status))
   1285     {
   1286         Status = AE_CTRL_TRUE;
   1287     }
   1288 
   1289     return (Status);
   1290 }
   1291 
   1292 
   1293 /*******************************************************************************
   1294  *
   1295  * FUNCTION:    AcpiDbExecuteThread
   1296  *
   1297  * PARAMETERS:  Context         - Not used
   1298  *
   1299  * RETURN:      None
   1300  *
   1301  * DESCRIPTION: Debugger execute thread. Waits for a command line, then
   1302  *              simply dispatches it.
   1303  *
   1304  ******************************************************************************/
   1305 
   1306 void ACPI_SYSTEM_XFACE
   1307 AcpiDbExecuteThread (
   1308     void                    *Context)
   1309 {
   1310 
   1311     (void) AcpiDbUserCommands ();
   1312     AcpiGbl_DbThreadsTerminated = TRUE;
   1313 }
   1314 
   1315 
   1316 /*******************************************************************************
   1317  *
   1318  * FUNCTION:    AcpiDbUserCommands
   1319  *
   1320  * PARAMETERS:  None
   1321  *
   1322  * RETURN:      None
   1323  *
   1324  * DESCRIPTION: Command line execution for the AML debugger. Commands are
   1325  *              matched and dispatched here.
   1326  *
   1327  ******************************************************************************/
   1328 
   1329 ACPI_STATUS
   1330 AcpiDbUserCommands (
   1331     void)
   1332 {
   1333     ACPI_STATUS             Status = AE_OK;
   1334 
   1335 
   1336     AcpiOsPrintf ("\n");
   1337 
   1338     /* TBD: [Restructure] Need a separate command line buffer for step mode */
   1339 
   1340     while (!AcpiGbl_DbTerminateLoop)
   1341     {
   1342         /* Wait the readiness of the command */
   1343 
   1344         Status = AcpiOsWaitCommandReady ();
   1345         if (ACPI_FAILURE (Status))
   1346         {
   1347             break;
   1348         }
   1349 
   1350         /* Just call to the command line interpreter */
   1351 
   1352         AcpiGbl_MethodExecuting = FALSE;
   1353         AcpiGbl_StepToNextCall = FALSE;
   1354 
   1355         (void) AcpiDbCommandDispatch (AcpiGbl_DbLineBuf, NULL, NULL);
   1356 
   1357         /* Notify the completion of the command */
   1358 
   1359         Status = AcpiOsNotifyCommandComplete ();
   1360         if (ACPI_FAILURE (Status))
   1361         {
   1362             break;
   1363         }
   1364     }
   1365 
   1366     if (ACPI_FAILURE (Status) && Status != AE_CTRL_TERMINATE)
   1367     {
   1368         ACPI_EXCEPTION ((AE_INFO, Status, "While parsing command line"));
   1369     }
   1370     return (Status);
   1371 }
   1372