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/*******************************************************************************

 *

 * Module Name: dbinput - user front-end to the AML debugger

 *

 ******************************************************************************/

/*

 * Copyright (C) 2000 - 2015, Intel Corp.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions, and the following disclaimer,

 *    without modification.

 * 2. Redistributions in binary form must reproduce at minimum a disclaimer

 *    substantially similar to the "NO WARRANTY" disclaimer below

 *    ("Disclaimer") and any redistribution must be conditioned upon

 *    including a substantially similar Disclaimer requirement for further

 *    binary redistribution.

 * 3. Neither the names of the above-listed copyright holders nor the names

 *    of any contributors may be used to endorse or promote products derived

 *    from this software without specific prior written permission.

 *

 * Alternatively, this software may be distributed under the terms of the

 * GNU General Public License ("GPL") version 2 as published by the Free

 * Software Foundation.

 *

 * NO WARRANTY

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGES.

 */

#include 

#include "accommon.h"

#include "acdebug.h"

#define _COMPONENT          ACPI_CA_DEBUGGER

ACPI_MODULE_NAME("dbinput")

/* Local prototypes */

static u32 acpi_db_get_line(char *input_buffer);

static u32 acpi_db_match_command(char *user_command);

static void acpi_db_single_thread(void);

static void acpi_db_display_command_info(char *command, u8 display_all);

static void acpi_db_display_help(char *command);

static u8

acpi_db_match_command_help(char *command,

			   const struct acpi_db_command_help *help);

/*

 * Top-level debugger commands.

 *

 * This list of commands must match the string table below it

 */

enum acpi_ex_debugger_commands {

	CMD_NOT_FOUND = 0,

	CMD_NULL,

	CMD_ALLOCATIONS,

	CMD_ARGS,

	CMD_ARGUMENTS,

	CMD_BREAKPOINT,

	CMD_BUSINFO,

	CMD_CALL,

	CMD_DEBUG,

	CMD_DISASSEMBLE,

	CMD_DISASM,

	CMD_DUMP,

	CMD_EVALUATE,

	CMD_EXECUTE,

	CMD_EXIT,

	CMD_FIND,

	CMD_GO,

	CMD_HANDLERS,

	CMD_HELP,

	CMD_HELP2,

	CMD_HISTORY,

	CMD_HISTORY_EXE,

	CMD_HISTORY_LAST,

	CMD_INFORMATION,

	CMD_INTEGRITY,

	CMD_INTO,

	CMD_LEVEL,

	CMD_LIST,

	CMD_LOCALS,

	CMD_LOCKS,

	CMD_METHODS,

	CMD_NAMESPACE,

	CMD_NOTIFY,

	CMD_OBJECTS,

	CMD_OSI,

	CMD_OWNER,

	CMD_PATHS,

	CMD_PREDEFINED,

	CMD_PREFIX,

	CMD_QUIT,

	CMD_REFERENCES,

	CMD_RESOURCES,

	CMD_RESULTS,

	CMD_SET,

	CMD_STATS,

	CMD_STOP,

	CMD_TABLES,

	CMD_TEMPLATE,

	CMD_TRACE,

	CMD_TREE,

	CMD_TYPE,

#ifdef ACPI_APPLICATION

	CMD_ENABLEACPI,

	CMD_EVENT,

	CMD_GPE,

	CMD_GPES,

	CMD_SCI,

	CMD_SLEEP,

	CMD_CLOSE,

	CMD_LOAD,

	CMD_OPEN,

	CMD_UNLOAD,

	CMD_TERMINATE,

	CMD_THREADS,

	CMD_TEST,

#endif

};

#define CMD_FIRST_VALID     2

/* Second parameter is the required argument count */

static const struct acpi_db_command_info acpi_gbl_db_commands[] = {

	{"", 0},

	{"", 0},

	{"ALLOCATIONS", 0},

	{"ARGS", 0},

	{"ARGUMENTS", 0},

	{"BREAKPOINT", 1},

	{"BUSINFO", 0},

	{"CALL", 0},

	{"DEBUG", 1},

	{"DISASSEMBLE", 1},

	{"DISASM", 1},

	{"DUMP", 1},

	{"EVALUATE", 1},

	{"EXECUTE", 1},

	{"EXIT", 0},

	{"FIND", 1},

	{"GO", 0},

	{"HANDLERS", 0},

	{"HELP", 0},

	{"?", 0},

	{"HISTORY", 0},

	{"!", 1},

	{"!!", 0},

	{"INFORMATION", 0},

	{"INTEGRITY", 0},

	{"INTO", 0},

	{"LEVEL", 0},

	{"LIST", 0},

	{"LOCALS", 0},

	{"LOCKS", 0},

	{"METHODS", 0},

	{"NAMESPACE", 0},

	{"NOTIFY", 2},

	{"OBJECTS", 0},

	{"OSI", 0},

	{"OWNER", 1},

	{"PATHS", 0},

	{"PREDEFINED", 0},

	{"PREFIX", 0},

	{"QUIT", 0},

	{"REFERENCES", 1},

	{"RESOURCES", 0},

	{"RESULTS", 0},

	{"SET", 3},

	{"STATS", 1},

	{"STOP", 0},

	{"TABLES", 0},

	{"TEMPLATE", 1},

	{"TRACE", 1},

	{"TREE", 0},

	{"TYPE", 1},

#ifdef ACPI_APPLICATION

	{"ENABLEACPI", 0},

	{"EVENT", 1},

	{"GPE", 1},

	{"GPES", 0},

	{"SCI", 0},

	{"SLEEP", 0},

	{"CLOSE", 0},

	{"LOAD", 1},

	{"OPEN", 1},

	{"UNLOAD", 1},

	{"TERMINATE", 0},

	{"THREADS", 3},

	{"TEST", 1},

#endif

	{NULL, 0}

};

/*

 * Help for all debugger commands. First argument is the number of lines

 * of help to output for the command.

 */

static const struct acpi_db_command_help acpi_gbl_db_command_help[] = {

	{0, "\nGeneral-Purpose Commands:", "\n"},

	{1, "  Allocations", "Display list of current memory allocations\n"},

	{2, "  Dump 
|", "\n"},

	{0, "       [Byte|Word|Dword|Qword]",

	 "Display ACPI objects or memory\n"},

	{1, "  Handlers", "Info about global handlers\n"},

	{1, "  Help [Command]", "This help screen or individual command\n"},

	{1, "  History", "Display command history buffer\n"},

	{1, "  Level ] [console]",

	 "Get/Set debug level for file or console\n"},

	{1, "  Locks", "Current status of internal mutexes\n"},

	{1, "  Osi [Install|Remove ]",

	 "Display or modify global _OSI list\n"},

	{1, "  Quit or Exit", "Exit this command\n"},

	{8, "  Stats ",

	 "Display namespace and memory statistics\n"},

	{1, "     Allocations", "Display list of current memory allocations\n"},

	{1, "     Memory", "Dump internal memory lists\n"},

	{1, "     Misc", "Namespace search and mutex stats\n"},

	{1, "     Objects", "Summary of namespace objects\n"},

	{1, "     Sizes", "Sizes for each of the internal objects\n"},

	{1, "     Stack", "Display CPU stack usage\n"},

	{1, "     Tables", "Info about current ACPI table(s)\n"},

	{1, "  Tables", "Display info about loaded ACPI tables\n"},

	{1, "  ! ", "Execute command from history buffer\n"},

	{1, "  !!", "Execute last command again\n"},

	{0, "\nNamespace Access Commands:", "\n"},

	{1, "  Businfo", "Display system bus info\n"},

	{1, "  Disassemble ", "Disassemble a control method\n"},

	{1, "  Find  (? is wildcard)",

	 "Find ACPI name(s) with wildcards\n"},

	{1, "  Integrity", "Validate namespace integrity\n"},

	{1, "  Methods", "Display list of loaded control methods\n"},

	{1, "  Namespace [Object] [Depth]",

	 "Display loaded namespace tree/subtree\n"},

	{1, "  Notify 

	{1, "  Objects [ObjectType]",

	 "Display summary of all objects or just given type\n"},

	{1, "  Owner  [Depth]",

	 "Display loaded namespace by object owner\n"},

	{1, "  Paths", "Display full pathnames of namespace objects\n"},

	{1, "  Predefined", "Check all predefined names\n"},

	{1, "  Prefix []", "Set or Get current execution prefix\n"},

	{1, "  References ", "Find all references to object at addr\n"},

	{1, "  Resources [DeviceName]",

	 "Display Device resources (no arg = all devices)\n"},

	{1, "  Set N  ", "Set value for named integer\n"},

	{1, "  Template 

	{1, "  Type 

	{0, "\nControl Method Execution Commands:", "\n"},

	{1, "  Arguments (or Args)", "Display method arguments\n"},

	{1, "  Breakpoint ", "Set an AML execution breakpoint\n"},

	{1, "  Call", "Run to next control method invocation\n"},

	{1, "  Debug  [Arguments]", "Single Step a control method\n"},

	{6, "  Evaluate", "Synonym for Execute\n"},

	{5, "  Execute  [Arguments]", "Execute control method\n"},

	{1, "     Hex Integer", "Integer method argument\n"},

	{1, "     \"Ascii String\"", "String method argument\n"},

	{1, "     (Hex Byte List)", "Buffer method argument\n"},

	{1, "     [Package Element List]", "Package method argument\n"},

	{1, "  Go", "Allow method to run to completion\n"},

	{1, "  Information", "Display info about the current method\n"},

	{1, "  Into", "Step into (not over) a method call\n"},

	{1, "  List [# of Aml Opcodes]", "Display method ASL statements\n"},

	{1, "  Locals", "Display method local variables\n"},

	{1, "  Results", "Display method result stack\n"},

	{1, "  Set  <#> ", "Set method data (Arguments/Locals)\n"},

	{1, "  Stop", "Terminate control method\n"},

	{5, "  Trace  [] [Once]",

	 "Trace control method execution\n"},

	{1, "     Enable", "Enable all messages\n"},

	{1, "     Disable", "Disable tracing\n"},

	{1, "     Method", "Enable method execution messages\n"},

	{1, "     Opcode", "Enable opcode execution messages\n"},

	{1, "  Tree", "Display control method calling tree\n"},

	{1, "  ", "Single step next AML opcode (over calls)\n"},

#ifdef ACPI_APPLICATION

	{0, "\nHardware Simulation Commands:", "\n"},

	{1, "  EnableAcpi", "Enable ACPI (hardware) mode\n"},

	{1, "  Event  ", "Generate AcpiEvent (Fixed/GPE)\n"},

	{1, "  Gpe  [GpeBlockDevice]", "Simulate a GPE\n"},

	{1, "  Gpes", "Display info on all GPE devices\n"},

	{1, "  Sci", "Generate an SCI\n"},

	{1, "  Sleep [SleepState]", "Simulate sleep/wake sequence(s) (0-5)\n"},

	{0, "\nFile I/O Commands:", "\n"},

	{1, "  Close", "Close debug output file\n"},

	{1, "  Load ", "Load ACPI table from a file\n"},

	{1, "  Open 
", "Open a file for debug output\n"},

	{1, "  Unload ",

	 "Unload an ACPI table via namespace object\n"},

	{0, "\nUser Space Commands:", "\n"},

	{1, "  Terminate", "Delete namespace and all internal objects\n"},

	{1, "  Thread ",

	 "Spawn threads to execute method(s)\n"},

	{0, "\nDebug Test Commands:", "\n"},

	{3, "  Test ", "Invoke a debug test\n"},

	{1, "     Objects", "Read/write/compare all namespace data objects\n"},

	{1, "     Predefined",

	 "Execute all ACPI predefined names (_STA, etc.)\n"},

#endif

	{0, NULL, NULL}

};

/*******************************************************************************

 *

 * FUNCTION:    acpi_db_match_command_help

 *

 * PARAMETERS:  command             - Command string to match

 *              help                - Help table entry to attempt match

 *

 * RETURN:      TRUE if command matched, FALSE otherwise

 *

 * DESCRIPTION: Attempt to match a command in the help table in order to

 *              print help information for a single command.

 *

 ******************************************************************************/

static u8

acpi_db_match_command_help(char *command,

			   const struct acpi_db_command_help *help)

{

	char *invocation = help->invocation;

	u32 line_count;

	/* Valid commands in the help table begin with a couple of spaces */

	if (*invocation != ' ') {

		return (FALSE);

	}

	while (*invocation == ' ') {

		invocation++;

	}

	/* Match command name (full command or substring) */

	while ((*command) && (*invocation) && (*invocation != ' ')) {

		if (tolower((int)*command) != tolower((int)*invocation)) {

			return (FALSE);

		}

		invocation++;

		command++;

	}

	/* Print the appropriate number of help lines */

	line_count = help->line_count;

	while (line_count) {

		acpi_os_printf("%-38s : %s", help->invocation,

			       help->description);

		help++;

		line_count--;

	}

	return (TRUE);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_db_display_command_info

 *

 * PARAMETERS:  command             - Command string to match

 *              display_all         - Display all matching commands, or just

 *                                    the first one (substring match)

 *

 * RETURN:      None

 *

 * DESCRIPTION: Display help information for a Debugger command.

 *

 ******************************************************************************/

static void acpi_db_display_command_info(char *command, u8 display_all)

{

	const struct acpi_db_command_help *next;

	u8 matched;

	next = acpi_gbl_db_command_help;

	while (next->invocation) {

		matched = acpi_db_match_command_help(command, next);

		if (!display_all && matched) {

			return;

		}

		next++;

	}

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_db_display_help

 *

 * PARAMETERS:  command             - Optional command string to display help.

 *                                    if not specified, all debugger command

 *                                    help strings are displayed

 *

 * RETURN:      None

 *

 * DESCRIPTION: Display help for a single debugger command, or all of them.

 *

 ******************************************************************************/

static void acpi_db_display_help(char *command)

{

	const struct acpi_db_command_help *next = acpi_gbl_db_command_help;

	if (!command) {

		/* No argument to help, display help for all commands */

		while (next->invocation) {

			acpi_os_printf("%-38s%s", next->invocation,

				       next->description);

			next++;

		}

	} else {

		/* Display help for all commands that match the subtring */

		acpi_db_display_command_info(command, TRUE);

	}

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_db_get_next_token

 *

 * PARAMETERS:  string          - Command buffer

 *              next            - Return value, end of next token

 *

 * RETURN:      Pointer to the start of the next token.

 *

 * DESCRIPTION: Command line parsing. Get the next token on the command line

 *

 ******************************************************************************/

char *acpi_db_get_next_token(char *string,

			     char **next, acpi_object_type * return_type)

{

	char *start;

	u32 depth;

	acpi_object_type type = ACPI_TYPE_INTEGER;

	/* At end of buffer? */

	if (!string || !(*string)) {

		return (NULL);

	}

	/* Remove any spaces at the beginning */

	if (*string == ' ') {

		while (*string && (*string == ' ')) {

			string++;

		}

		if (!(*string)) {

			return (NULL);

		}

	}

	switch (*string) {

	case '"':

		/* This is a quoted string, scan until closing quote */

		string++;

		start = string;

		type = ACPI_TYPE_STRING;

		/* Find end of string */

		while (*string && (*string != '"')) {

			string++;

		}

		break;

	case '(':

		/* This is the start of a buffer, scan until closing paren */

		string++;

		start = string;

		type = ACPI_TYPE_BUFFER;

		/* Find end of buffer */

		while (*string && (*string != ')')) {

			string++;

		}

		break;

	case '[':

		/* This is the start of a package, scan until closing bracket */

		string++;

		depth = 1;

		start = string;

		type = ACPI_TYPE_PACKAGE;

		/* Find end of package (closing bracket) */

		while (*string) {

			/* Handle String package elements */

			if (*string == '"') {

				/* Find end of string */

				string++;

				while (*string && (*string != '"')) {

					string++;

				}

				if (!(*string)) {

					break;

				}

			} else if (*string == '[') {

				depth++;	/* A nested package declaration */

			} else if (*string == ']') {

				depth--;

				if (depth == 0) {	/* Found final package closing bracket */

					break;

				}

			}

			string++;

		}

		break;

	default:

		start = string;

		/* Find end of token */

		while (*string && (*string != ' ')) {

			string++;

		}

		break;

	}

	if (!(*string)) {

		*next = NULL;

	} else {

		*string = 0;

		*next = string + 1;

	}

	*return_type = type;

	return (start);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_db_get_line

 *

 * PARAMETERS:  input_buffer        - Command line buffer

 *

 * RETURN:      Count of arguments to the command

 *

 * DESCRIPTION: Get the next command line from the user. Gets entire line

 *              up to the next newline

 *

 ******************************************************************************/

static u32 acpi_db_get_line(char *input_buffer)

{

	u32 i;

	u32 count;

	char *next;

	char *this;

	if (acpi_ut_safe_strcpy

	    (acpi_gbl_db_parsed_buf, sizeof(acpi_gbl_db_parsed_buf),

	     input_buffer)) {

		acpi_os_printf

		    ("Buffer overflow while parsing input line (max %u characters)\n",

		     sizeof(acpi_gbl_db_parsed_buf));

		return (0);

	}

	this = acpi_gbl_db_parsed_buf;

	for (i = 0; i < ACPI_DEBUGGER_MAX_ARGS; i++) {

		acpi_gbl_db_args[i] = acpi_db_get_next_token(this, &next,

							     &acpi_gbl_db_arg_types

							     [i]);

		if (!acpi_gbl_db_args[i]) {

			break;

		}

		this = next;

	}

	/* Uppercase the actual command */

	if (acpi_gbl_db_args[0]) {

		acpi_ut_strupr(acpi_gbl_db_args[0]);

	}

	count = i;

	if (count) {

		count--;	/* Number of args only */

	}

	return (count);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_db_match_command

 *

 * PARAMETERS:  user_command            - User command line

 *

 * RETURN:      Index into command array, -1 if not found

 *

 * DESCRIPTION: Search command array for a command match

 *

 ******************************************************************************/

static u32 acpi_db_match_command(char *user_command)

{

	u32 i;

	if (!user_command || user_command[0] == 0) {

		return (CMD_NULL);

	}

	for (i = CMD_FIRST_VALID; acpi_gbl_db_commands[i].name; i++) {

		if (strstr(acpi_gbl_db_commands[i].name, user_command) ==

		    acpi_gbl_db_commands[i].name) {

			return (i);

		}

	}

	/* Command not recognized */

	return (CMD_NOT_FOUND);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_db_command_dispatch

 *

 * PARAMETERS:  input_buffer        - Command line buffer

 *              walk_state          - Current walk

 *              op                  - Current (executing) parse op

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Command dispatcher.

 *

 ******************************************************************************/

acpi_status

acpi_db_command_dispatch(char *input_buffer,

			 struct acpi_walk_state * walk_state,

			 union acpi_parse_object * op)

{

	u32 temp;

	u32 command_index;

	u32 param_count;

	char *command_line;

	acpi_status status = AE_CTRL_TRUE;

	/* If acpi_terminate has been called, terminate this thread */

	if (acpi_gbl_db_terminate_loop) {

		return (AE_CTRL_TERMINATE);

	}

	/* Find command and add to the history buffer */

	param_count = acpi_db_get_line(input_buffer);

	command_index = acpi_db_match_command(acpi_gbl_db_args[0]);

	temp = 0;

	/*

	 * We don't want to add the !! command to the history buffer. It

	 * would cause an infinite loop because it would always be the

	 * previous command.

	 */

	if (command_index != CMD_HISTORY_LAST) {

		acpi_db_add_to_history(input_buffer);

	}

	/* Verify that we have the minimum number of params */

	if (param_count < acpi_gbl_db_commands[command_index].min_args) {

		acpi_os_printf

		    ("%u parameters entered, [%s] requires %u parameters\n",

		     param_count, acpi_gbl_db_commands[command_index].name,

		     acpi_gbl_db_commands[command_index].min_args);

		acpi_db_display_command_info(acpi_gbl_db_commands

					     [command_index].name, FALSE);

		return (AE_CTRL_TRUE);

	}

	/* Decode and dispatch the command */

	switch (command_index) {

	case CMD_NULL:

		if (op) {

			return (AE_OK);

		}

		break;

	case CMD_ALLOCATIONS:

#ifdef ACPI_DBG_TRACK_ALLOCATIONS

		acpi_ut_dump_allocations((u32)-1, NULL);

#endif

		break;

	case CMD_ARGS:

	case CMD_ARGUMENTS:

		acpi_db_display_arguments();

		break;

	case CMD_BREAKPOINT:

		acpi_db_set_method_breakpoint(acpi_gbl_db_args[1], walk_state,

					      op);

		break;

	case CMD_BUSINFO:

		acpi_db_get_bus_info();

		break;

	case CMD_CALL:

		acpi_db_set_method_call_breakpoint(op);

		status = AE_OK;

		break;

	case CMD_DEBUG:

		acpi_db_execute(acpi_gbl_db_args[1],

				&acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],

				EX_SINGLE_STEP);

		break;

	case CMD_DISASSEMBLE:

	case CMD_DISASM:

		(void)acpi_db_disassemble_method(acpi_gbl_db_args[1]);

		break;

	case CMD_DUMP:

		acpi_db_decode_and_display_object(acpi_gbl_db_args[1],

						  acpi_gbl_db_args[2]);

		break;

	case CMD_EVALUATE:

	case CMD_EXECUTE:

		acpi_db_execute(acpi_gbl_db_args[1],

				&acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],

				EX_NO_SINGLE_STEP);

		break;

	case CMD_FIND:

		status = acpi_db_find_name_in_namespace(acpi_gbl_db_args[1]);

		break;

	case CMD_GO:

		acpi_gbl_cm_single_step = FALSE;

		return (AE_OK);

	case CMD_HANDLERS:

		acpi_db_display_handlers();

		break;

	case CMD_HELP:

	case CMD_HELP2:

		acpi_db_display_help(acpi_gbl_db_args[1]);

		break;

	case CMD_HISTORY:

		acpi_db_display_history();

		break;

	case CMD_HISTORY_EXE:	/* ! command */

		command_line = acpi_db_get_from_history(acpi_gbl_db_args[1]);

		if (!command_line) {

			return (AE_CTRL_TRUE);

		}

		status = acpi_db_command_dispatch(command_line, walk_state, op);

		return (status);

	case CMD_HISTORY_LAST:	/* !! command */

		command_line = acpi_db_get_from_history(NULL);

		if (!command_line) {

			return (AE_CTRL_TRUE);

		}

		status = acpi_db_command_dispatch(command_line, walk_state, op);

		return (status);

	case CMD_INFORMATION:

		acpi_db_display_method_info(op);

		break;

	case CMD_INTEGRITY:

		acpi_db_check_integrity();

		break;

	case CMD_INTO:

		if (op) {

			acpi_gbl_cm_single_step = TRUE;

			return (AE_OK);

		}

		break;

	case CMD_LEVEL:

		if (param_count == 0) {

			acpi_os_printf

			    ("Current debug level for file output is:    %8.8lX\n",

			     acpi_gbl_db_debug_level);

			acpi_os_printf

			    ("Current debug level for console output is: %8.8lX\n",

			     acpi_gbl_db_console_debug_level);

		} else if (param_count == 2) {

			temp = acpi_gbl_db_console_debug_level;

			acpi_gbl_db_console_debug_level =

			    strtoul(acpi_gbl_db_args[1], NULL, 16);

			acpi_os_printf

			    ("Debug Level for console output was %8.8lX, now %8.8lX\n",

			     temp, acpi_gbl_db_console_debug_level);

		} else {

			temp = acpi_gbl_db_debug_level;

			acpi_gbl_db_debug_level =

			    strtoul(acpi_gbl_db_args[1], NULL, 16);

			acpi_os_printf

			    ("Debug Level for file output was %8.8lX, now %8.8lX\n",

			     temp, acpi_gbl_db_debug_level);

		}

		break;

	case CMD_LIST:

		acpi_db_disassemble_aml(acpi_gbl_db_args[1], op);

		break;

	case CMD_LOCKS:

		acpi_db_display_locks();

		break;

	case CMD_LOCALS:

		acpi_db_display_locals();

		break;

	case CMD_METHODS:

		status = acpi_db_display_objects("METHOD", acpi_gbl_db_args[1]);

		break;

	case CMD_NAMESPACE:

		acpi_db_dump_namespace(acpi_gbl_db_args[1],

				       acpi_gbl_db_args[2]);

		break;

	case CMD_NOTIFY:

		temp = strtoul(acpi_gbl_db_args[2], NULL, 0);

		acpi_db_send_notify(acpi_gbl_db_args[1], temp);

		break;

	case CMD_OBJECTS:

		acpi_ut_strupr(acpi_gbl_db_args[1]);

		status =

		    acpi_db_display_objects(acpi_gbl_db_args[1],

					    acpi_gbl_db_args[2]);

		break;

	case CMD_OSI:

		acpi_db_display_interfaces(acpi_gbl_db_args[1],

					   acpi_gbl_db_args[2]);

		break;

	case CMD_OWNER:

		acpi_db_dump_namespace_by_owner(acpi_gbl_db_args[1],

						acpi_gbl_db_args[2]);

		break;

	case CMD_PATHS:

		acpi_db_dump_namespace_paths();

		break;

	case CMD_PREFIX:

		acpi_db_set_scope(acpi_gbl_db_args[1]);

		break;

	case CMD_REFERENCES:

		acpi_db_find_references(acpi_gbl_db_args[1]);

		break;

	case CMD_RESOURCES:

		acpi_db_display_resources(acpi_gbl_db_args[1]);

		break;

	case CMD_RESULTS:

		acpi_db_display_results();

		break;

	case CMD_SET:

		acpi_db_set_method_data(acpi_gbl_db_args[1],

					acpi_gbl_db_args[2],

					acpi_gbl_db_args[3]);

		break;

	case CMD_STATS:

		status = acpi_db_display_statistics(acpi_gbl_db_args[1]);

		break;

	case CMD_STOP:

		return (AE_NOT_IMPLEMENTED);

	case CMD_TABLES:

		acpi_db_display_table_info(acpi_gbl_db_args[1]);

		break;

	case CMD_TEMPLATE:

		acpi_db_display_template(acpi_gbl_db_args[1]);

		break;

	case CMD_TRACE:

		acpi_db_trace(acpi_gbl_db_args[1], acpi_gbl_db_args[2],

			      acpi_gbl_db_args[3]);

		break;

	case CMD_TREE:

		acpi_db_display_calling_tree();

		break;

	case CMD_TYPE:

		acpi_db_display_object_type(acpi_gbl_db_args[1]);

		break;

#ifdef ACPI_APPLICATION

		/* Hardware simulation commands. */

	case CMD_ENABLEACPI:

#if (!ACPI_REDUCED_HARDWARE)

		status = acpi_enable();

		if (ACPI_FAILURE(status)) {

			acpi_os_printf("AcpiEnable failed (Status=%X)\n",

				       status);

			return (status);

		}

#endif				/* !ACPI_REDUCED_HARDWARE */

		break;

	case CMD_EVENT:

		acpi_os_printf("Event command not implemented\n");

		break;

	case CMD_GPE:

		acpi_db_generate_gpe(acpi_gbl_db_args[1], acpi_gbl_db_args[2]);

		break;

	case CMD_GPES:

		acpi_db_display_gpes();

		break;

	case CMD_SCI:

		acpi_db_generate_sci();

		break;

	case CMD_SLEEP:

		status = acpi_db_sleep(acpi_gbl_db_args[1]);

		break;

		/* File I/O commands. */

	case CMD_CLOSE:

		acpi_db_close_debug_file();

		break;

	case CMD_LOAD:

		status =

		    acpi_db_get_table_from_file(acpi_gbl_db_args[1], NULL,

						FALSE);

		break;

	case CMD_OPEN:

		acpi_db_open_debug_file(acpi_gbl_db_args[1]);

		break;

		/* User space commands. */

	case CMD_TERMINATE:

		acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);

		acpi_ut_subsystem_shutdown();

		/*

		 * TBD: [Restructure] Need some way to re-initialize without

		 * re-creating the semaphores!

		 */

		acpi_gbl_db_terminate_loop = TRUE;

		/*  acpi_initialize (NULL); */

		break;

	case CMD_THREADS:

		acpi_db_create_execution_threads(acpi_gbl_db_args[1],

						 acpi_gbl_db_args[2],

						 acpi_gbl_db_args[3]);

		break;

		/* Debug test commands. */

	case CMD_PREDEFINED:

		acpi_db_check_predefined_names();

		break;

	case CMD_TEST:

		acpi_db_execute_test(acpi_gbl_db_args[1]);

		break;

	case CMD_UNLOAD:

		acpi_db_unload_acpi_table(acpi_gbl_db_args[1]);

		break;

#endif

	case CMD_EXIT:

	case CMD_QUIT:

		if (op) {

			acpi_os_printf("Method execution terminated\n");

			return (AE_CTRL_TERMINATE);

		}

		if (!acpi_gbl_db_output_to_file) {

			acpi_dbg_level = ACPI_DEBUG_DEFAULT;

		}

#ifdef ACPI_APPLICATION

		acpi_db_close_debug_file();

#endif

		acpi_gbl_db_terminate_loop = TRUE;

		return (AE_CTRL_TERMINATE);

	case CMD_NOT_FOUND:

	default: