/****************************************************************************** * * Copyright (c) 2003 Gerhard W. Gruber * * PROJECT: pICE * $Source: /cvsroot/pice/pice/module/parse.c,v $ * $Revision: 1.5 $ * $Date: 2004/02/17 23:07:36 $ * $Author: lightweave $ * $Name:  $ * * $Log: parse.c,v $ * Revision 1.5  2004/02/17 23:07:36  lightweave * * Improved the DEBUG facillity and replaced the configuration handler with a * new code which now can read MS Windows INI style files. See CHANGES.txt for * more details. * Also added a macro which prevents compiling for kernels before 2.4.19. * * Revision 1.4  2003/06/18 22:00:22  lightweave * DEBUG and DEBUG_SERIAL added * * *****************************************************************************/static char *ident = "$Header: /cvsroot/pice/pice/module/parse.c,v 1.5 2004/02/17 23:07:36 lightweave Exp $";/*++Copyright (c) 1998-2001 Klaus P. GerlicherModule Name:    parse.cAbstract:    execution of debugger commandsEnvironment:    Kernel mode onlyAuthor:    Klaus P. GerlicherRevision History:    19-Aug-1998:	created    15-Nov-2000:    general cleanup of source filesCopyright notice:  This file may be distributed under the terms of the GNU Public License.--*/////////////////////////////////////////////////////// INCLUDES////#include "remods.h"#include <linux/sched.h>#include <asm/io.h>#include <asm/page.h>#include <linux/utsname.h>#include <linux/timer.h>#include <linux/ctype.h>#include <linux/sys.h>#include <linux/highmem.h>#include "precomp.h"#include "pci_ids.h"///////////////////////////////////////////////////// GLOBALSULONG ValueTrue=1,ValueFalse=0;ULONG ulLastDisassStartAddress=0,ulLastDisassEndAddress=0,ulLastInvertedAddress=0;USHORT gCurrentSelector=0;ULONG gCurrentOffset=0;LONG ulCurrentlyDisplayedLineNumber=0;USHORT usOldDisasmSegment = 0;ULONG ulOldDisasmOffset = 0;static ULONG ulCountForWaitKey = 0;extern unsigned long sys_call_table[];BOOLEAN (*DisplayMemory)(EXCEPTION_FRAME* pFrame,PARGS pArgs) = DisplayMemoryDword;char szCurrentFile[256]="";struct module* pCurrentMod=NULL;PICE_SYMBOLFILE_HEADER* pCurrentSymbols=NULL;// suppresses passing on of function keys while stepping codeBOOLEAN bInt3Here = TRUE;KEYWORDS RegKeyWords[]={	{"eax",GetEAX,SetEAX,sizeof(ULONG)},	{"ebx",GetEBX,SetEBX,sizeof(ULONG)},	{"ecx",GetECX,SetECX,sizeof(ULONG)},	{"edx",GetEDX,SetEDX,sizeof(ULONG)},	{"edi",GetEDI,SetEDI,sizeof(ULONG)},	{"esi",GetESI,SetESI,sizeof(ULONG)},	{"ebp",GetEBP,SetEBP,sizeof(ULONG)},	{"esp",GetESP,SetESP,sizeof(ULONG)},	{"eip",GetEIP,SetEIP,sizeof(ULONG)},	{"efl",GetEFLAGS,SetEFLAGS,sizeof(ULONG)},	{NULL,0,0}};KEYWORDS SelectorRegKeyWords[]={	{"cs",GetCS,SetCS,sizeof(USHORT)},	{"ds",GetDS,SetDS,sizeof(USHORT)},	{"es",GetES,SetES,sizeof(USHORT)},	{"fs",GetFS,SetFS,sizeof(USHORT)},	{"gs",GetGS,SetGS,sizeof(USHORT)},	{"ss",GetSS,SetSS,sizeof(USHORT)},	{NULL,0,0}};KEYWORDS OnOffKeyWords[]={	{"on",GetTRUE,NULL,sizeof(ULONG)},	{"off",GetFALSE,NULL,sizeof(ULONG)},	{NULL,0,0}};KEYWORDS SpecialKeyWords[]={	{"process",GetPROCESS,NULL,sizeof(ULONG)},	{NULL,0,0}};LPSTR LocalVarRegs[]={    "EAX",    "ECX",    "EDX",    "EBX",     "ESP",    "EBP",    "ESI",    "EDI",    "EIP",    "EFL",    "CS",    "SS",    "DS",    "ES",    "FS",    "GS"};#define COMMAND_HAS_NO_PARAMS       (0)#define COMMAND_HAS_PARAMS          (1<<0)#define COMMAND_HAS_SWITCHES        (1<<1)//#define PARAM_CAN_BE_SYMBOLIC           (1<<0)#define PARAM_CAN_BE_SEG_OFFSET         (1<<1)#define PARAM_CAN_BE_MODULE             (1<<2)#define PARAM_CAN_BE_PRNAME             (1<<3)#define PARAM_CAN_BE_PID                (1<<4)#define PARAM_CAN_BE_SRC_FILE           (1<<5)#define PARAM_CAN_BE_NUMERIC            (1<<6)#define PARAM_CAN_BE_REG_KEYWORD        (1<<7)#define PARAM_CAN_BE_ONOFF_KEYWORD      (1<<8)#define PARAM_CAN_BE_SPECIAL_KEYWORD    (1<<9)#define PARAM_CAN_BE_ASTERISK           (1<<10)#define PARAM_CAN_BE_ONOFF		        (1<<11)#define PARAM_CAN_BE_VIRTUAL_SYMBOLIC   (1<<12)#define PARAM_CAN_BE_SRCLINE            (1<<13)#define PARAM_CAN_BE_PARTIAL_SYM_NAME   (1<<14)#define PARAM_CAN_BE_ANY_STRING		    (1<<15)#define PARAM_CAN_BE_DECIMAL            (1<<16)#define PARAM_CAN_BE_SIZE_DESC          (1<<17)#define PARAM_CAN_BE_LETTER             (1<<18)//#define COMMAND_GROUP_HELP              (0)#define COMMAND_GROUP_FLOW              (1)#define COMMAND_GROUP_STRUCT            (2)#define COMMAND_GROUP_OS                (3)#define COMMAND_GROUP_MEM               (4)#define COMMAND_GROUP_BREAKPOINT        (5)#define COMMAND_GROUP_WINDOW            (6)#define COMMAND_GROUP_DEBUG             (7)#define COMMAND_GROUP_INFO              (8)#define COMMAND_GROUP_STATE             (9)#define COMMAND_GROUP_HELP_ONLY         (10)#define COMMAND_GROUP_LAST              (11)LPSTR CommandGroups[]={    "HELP",    "FLOW CONTROL",    "STRUCTURES",    "OS SPECIFIC",    "MEMORY",    "BREAKPOINTS",    "WINDOW",    "DEBUGGING",    "INFORMATION",    "STATE",    "EDITOR",    NULL};// table of command handlersCMDTABLE CmdTable[]={	{"regs",ShowRegisters,"show per CPU exception frame"			,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC,0,0,0,0},"",COMMAND_GROUP_MEM},	{"ib",InportByte,"read model specific register"					,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC,0,0,0,0},"",COMMAND_GROUP_MEM},	{"ob",OutportByte,"output byte to port"							,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC,PARAM_CAN_BE_NUMERIC,0,0,0},"",COMMAND_GROUP_MEM},	{"rdmsr",ReadMSR,"read model specific register"					,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC,PARAM_CAN_BE_NUMERIC,0,0,0},"",COMMAND_GROUP_INFO},	{"zap",ZapBreakpoint,"remove an embedded breakpoint"			,0,{0,0,0,0,0},"",COMMAND_GROUP_DEBUG},	{"heap",DumpHeap,"dump internal memory heap"					,0,{0,0,0,0,0},"",COMMAND_GROUP_INFO},	{"gdt",ShowGdt,"display current global descriptor table"		,0,{0,0,0,0,0},"",COMMAND_GROUP_STRUCT},	{"idt",ShowIdt,"display current interrupt descriptor table"		,0,{0,0,0,0,0},"",COMMAND_GROUP_STRUCT},	{"x",LeaveIce,"return to Linux"									,0,{0,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"t",SingleStep,"single step one instruction"					,0,{0,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"vma",ShowVirtualMemory,"displays VMAs"						,0,{0,0,0,0,0},"",COMMAND_GROUP_OS},	{"h",ShowHelp,"list help on commands"							,0,{0,0,0,0,0},"",COMMAND_GROUP_HELP},	{"page",ShowPageDirs,"dump page directories"					,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC|PARAM_CAN_BE_REG_KEYWORD,0,0,0,0},"",COMMAND_GROUP_STRUCT},	{"proc",ShowProcesses,"list all processes"						,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_PRNAME|PARAM_CAN_BE_PID,0,0,0,0},"",COMMAND_GROUP_OS},	{"dd",DisplayMemoryDword,"display dword memory"         		,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC|PARAM_CAN_BE_SYMBOLIC|PARAM_CAN_BE_REG_KEYWORD,0,0,0,0},"",COMMAND_GROUP_MEM},	{"db",DisplayMemoryByte,"display byte memory "		            ,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC|PARAM_CAN_BE_SYMBOLIC|PARAM_CAN_BE_REG_KEYWORD,0,0,0,0},"",COMMAND_GROUP_MEM},	{"dpd",DisplayPhysMemDword,"display dword physical memory"      ,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC,0,0,0,0},"",COMMAND_GROUP_MEM},	{"u",Unassemble,"disassemble at address"						,COMMAND_HAS_PARAMS|COMMAND_HAS_SWITCHES,{PARAM_CAN_BE_NUMERIC|PARAM_CAN_BE_SYMBOLIC|PARAM_CAN_BE_REG_KEYWORD|PARAM_CAN_BE_SRCLINE,0,0,0,0},"f",COMMAND_GROUP_MEM},	{"mod",ShowModules,"displays all modules"					    ,0,{0,0,0,0,0},"",COMMAND_GROUP_OS},	{"bpx",SetBreakpoint,"set code breakpoint"						,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC|PARAM_CAN_BE_VIRTUAL_SYMBOLIC|PARAM_CAN_BE_SYMBOLIC|PARAM_CAN_BE_SRCLINE|PARAM_CAN_BE_REG_KEYWORD,0,0,0,0},"",COMMAND_GROUP_BREAKPOINT},	{"bl",ListBreakpoints,"list breakpoints"						,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC,0,0,0,0},"",COMMAND_GROUP_BREAKPOINT},	{"bc",ClearBreakpoints,"clear breakpoints"						,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC|PARAM_CAN_BE_ASTERISK,0,0,0,0},"",COMMAND_GROUP_BREAKPOINT},	{"ver",Ver,"display pICE version and state information"			,0,{0,0,0,0,0},"",COMMAND_GROUP_INFO},	{"hboot",Hboot,"hard boot the system"							,0,{0,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"code",SetCodeDisplay,"toggle code display"					,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_ONOFF,0,0,0,0},"",COMMAND_GROUP_STATE},	{"cpu",ShowCPU,"display CPU special registers"					,0,{0,0,0,0,0},"",COMMAND_GROUP_STRUCT},	{"stack",WalkStack,"display call stack"							,0,{0,0,0,0,0},"",COMMAND_GROUP_STRUCT},	{"peek",PeekMemory,"peek at physical memory"    		   		,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_SIZE_DESC,PARAM_CAN_BE_NUMERIC,0,0,0},"",COMMAND_GROUP_MEM},	{"poke",PokeMemory,"poke to physical memory"            		,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_SIZE_DESC,PARAM_CAN_BE_NUMERIC,PARAM_CAN_BE_NUMERIC,0,0},"",COMMAND_GROUP_MEM},	{".",UnassembleAtCurrentEIP,"unassemble at current instruction" ,0,{0,0,0,0,0},"",COMMAND_GROUP_MEM},	{"p",StepOver,"single step over call"							,0,{0,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"i",StepInto,"single step into call"							,0,{0,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"locals",ShowLocals,"display local symbols"					,0,{0,0,0,0,0},"",COMMAND_GROUP_MEM},	{"table",SwitchTables,"display loaded symbol tables"			,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_MODULE,0,0,0,0},"",COMMAND_GROUP_DEBUG},	{"file",SwitchFiles,"display source files in symbol table"		,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_SRC_FILE,0,0,0,0},"",COMMAND_GROUP_DEBUG},	{"sym",ShowSymbols,"list known symbol information"				,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_PARTIAL_SYM_NAME,0,0,0,0},"",COMMAND_GROUP_DEBUG},	{"?",EvaluateExpression,"evaluate an expression"				,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_ANY_STRING,0,0,0,0},"",COMMAND_GROUP_DEBUG},	{"src",SetSrcDisplay,"sets disassembly mode"					,0,{0,0,0,0,0},"",COMMAND_GROUP_DEBUG},	{"wc",SizeCodeWindow,"change size of code window"	   			,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_DECIMAL,0,0,0,0},"",COMMAND_GROUP_WINDOW},	{"wd",SizeDataWindow,"change size of data window"	   			,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_DECIMAL,0,0,0,0},"",COMMAND_GROUP_WINDOW},	{"r",SetGetRegisters,"sets or displays registers"				,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_REG_KEYWORD,PARAM_CAN_BE_NUMERIC,0,0,0},"",COMMAND_GROUP_STRUCT},	{"cls",ClearScreen,"clear output window"     					,0,{0,0,0,0,0},"",COMMAND_GROUP_WINDOW},	{"phys",ShowMappings,"show all mappings for linear address"		,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_NUMERIC,0,0,0,0},"",COMMAND_GROUP_MEM},	{"timers",ShowTimers,"show all active timers"					,0,{0,0,0,0,0},"",COMMAND_GROUP_OS},	{"pci",ShowPCI,"show PCI devices"   					        ,COMMAND_HAS_PARAMS|COMMAND_HAS_SWITCHES,{PARAM_CAN_BE_DECIMAL,PARAM_CAN_BE_DECIMAL,0,0,0},"a",COMMAND_GROUP_INFO},	{"next",NextInstr,"advance EIP to next instruction"				,0,{0,0,0,0,0},""},	{"i3here",I3here,"catch INT 3s"									,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_ONOFF,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"layout",SetKeyboardLayout,"sets keyboard layout"  			,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_DECIMAL,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"syscall",ShowSysCallTable,"displays syscall (table)" 			,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_DECIMAL,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"altkey",SetAltKey,"set alternate break key"        			,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_LETTER,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"addr",ShowContext,"show/set address contexts"            		,COMMAND_HAS_PARAMS,{PARAM_CAN_BE_PRNAME,0,0,0,0},"",COMMAND_GROUP_FLOW},	{"arrow up",NULL,""            		                            ,0,{0,0,0,0,0},"",COMMAND_GROUP_HELP_ONLY},    {NULL,0,NULL}};static char tempCmd[1024];char HexDigit[] = { '0', '1', '2', '3', '4', '5', '6', '7',                    '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };CPUINFO CPUInfo[]={	{"DR0",&CurrentDR0},	{"DR1",&CurrentDR1},	{"DR2",&CurrentDR2},	{"DR3",&CurrentDR3},	{"DR6",&CurrentDR6},	{"DR7",&CurrentDR7},	{"CR0",&CurrentCR0}, 	{"CR2",&CurrentCR2}, 	{"CR3",&CurrentCR3}, 	{"CR4",&CurrentCR4}, 	{"",NULL},};BP Bp[4]={	{0,0,0,FALSE,FALSE,FALSE,"",""},	{0,0,0,FALSE,FALSE,FALSE,"",""},	{0,0,0,FALSE,FALSE,FALSE,"",""},	{0,0,0,FALSE,FALSE,FALSE,"",""}};BOOLEAN bShowSrc = TRUE;BOOLEAN bCodeOn = FALSE;BOOLEAN bNeedToFillBuffer = TRUE;char *NonSystemSegmentTypes[]={	"Data RO",	"Data RO accessed",	"Data RW",	"Data RW accessed",	"Data RO expand-dwon",	"Data RO expand-down, accessed",	"Data RW expand-dwon",	"Data RW expand-down, accessed",	"Code EO",	"Code EO accessed",	"Code ER",	"Code ER accessed",	"Code EO conforming",	"Code EO conforming, accessed",	"Code ER conforming",	"Code ER conforming, accessed"};char *SystemSegmentTypes[]={	"reserved0",	"16-bit TSS (available)",	"LDT",	"16-bit TSS (busy)",	"16-bit call gate",	"task gate",	"16-bit interrupt gate",	"16-bit trap gate",	"reserved1",	"32-bit TSS (available)",	"reserved2",	"32-bit TSS (busy)",	"32-bit call gate",	"reserved3",	"32-bit interrupt gate",	"32-bit trap gate"};////////////////////////////////////////////////////// FUNCTIONS//////*************************************************************************// RepaintSource()////*************************************************************************void RepaintSource(EXCEPTION_FRAME* pFrame){    ARGS Args;    ENTER_FUNC();    // disassembly from current address    PICE_memset(&Args,0,sizeof(ARGS));    // make unassembler refresh all again     ulLastDisassStartAddress=ulLastDisassEndAddress=0;	Args.Count=0;	Unassemble(pFrame,&Args);    LEAVE_FUNC();}//*************************************************************************// RepaintDesktop()////*************************************************************************void RepaintDesktop(EXCEPTION_FRAME* pFrame){    ARGS Args;	extern ULONG ulOldInPos,ulInPos;    ENTER_FUNC();    PrintTemplate();    DisplayRegs(pFrame);    // display data window	Args.Value[0]=OldSelector;	Args.Value[1]=OldOffset;	Args.Count=2;	DisplayMemory(pFrame,&Args);    // disassembly from current address    PICE_memset(&Args,0,sizeof(ARGS));    // make unassembler refresh all again     ulLastDisassStartAddress=ulLastDisassEndAddress=0;	Args.Count=0;	Unassemble(pFrame,&Args);	ulOldInPos = ulInPos-1;    PrintRingBuffer(wWindow[OUTPUT_WINDOW].cy-1);    Print(OUTPUT_WINDOW,"");    ShowStoppedMsg();    ShowStatusLine(pFrame);    LEAVE_FUNC();}//*************************************************************************// PutStatusText()////*************************************************************************void PutStatusText(LPSTR p){    ENTER_FUNC();	ClrLines(wWindow[OUTPUT_WINDOW].y-1,1);	PutChar(p,1,wWindow[OUTPUT_WINDOW].y-1);    LEAVE_FUNC();}//*************************************************************************// WaitForKey()////*************************************************************************BOOLEAN WaitForKey(void){    BOOLEAN result=TRUE;	UCHAR ucKeyPressedWhileIdle;    if(ulCountForWaitKey == 0)        SuspendPrintRingBuffer(TRUE);    ulCountForWaitKey++;	if(ulCountForWaitKey == (wWindow[OUTPUT_WINDOW].cy-1))	{        SuspendPrintRingBuffer(FALSE);    	PrintRingBuffer(wWindow[OUTPUT_WINDOW].cy-1);        ulCountForWaitKey = 0;        SetForegroundColor(COLOR_TEXT);	    SetBackgroundColor(COLOR_CAPTION);		ClrLines(wWindow[OUTPUT_WINDOW].y+wWindow[OUTPUT_WINDOW].cy,1);		PutChar(" Press any key to continue listing or press ESC to stop... ",1,wWindow[OUTPUT_WINDOW].y+wWindow[OUTPUT_WINDOW].cy);		ucKeyPressedWhileIdle=0;        while(!(ucKeyPressedWhileIdle=GetKeyPolled()))		{			PrintCursor(FALSE);		}        ResetColor();		// if ESCAPE then indicate retreat		if(ucKeyPressedWhileIdle==SCANCODE_ESC)		{			result=FALSE;		}		ucKeyPressedWhileIdle=0;	}    return result;}/////////////////////////////////////////////////////////////// command handlers///////////////////////////////////////////////////////////////*************************************************************************// SingleStep()////*************************************************************************COMMAND_PROTOTYPE(SingleStep){    ULONG ulLineNumber;    LPSTR pSrcStart,pSrcEnd,pFilename;    ENTER_FUNC();    if(FindSourceLineForAddress(GetLinearAddress(pFrame->cs,pFrame->eip),&ulLineNumber,&pSrcStart,&pSrcEnd,&pFilename))    {        DPRINT(PICE_DEBUG, DBT_PARSE, DBL_INFO, "stepping into source\n");        StepInto(pFrame,NULL);    }    else    {		DPRINT(PICE_DEBUG, DBT_PARSE, DBL_INFO, "step\n");