p.cpp File Reference

p command More...

#include "pch.h"

Functions
VOID	CommandPHelp ()
	help of the p command
VOID	CommandP (vector< string > SplitCommand, string Command)
	handler of p command

Variables
BOOLEAN	g_IsSerialConnectedToRemoteDebuggee
	Shows if the debugger was connected to remote debuggee over (A remote guest)
BOOLEAN	g_IsInstrumentingInstructions
	Shows whether the user is running 't', 'p', or 'i' command.
ACTIVE_DEBUGGING_PROCESS	g_ActiveProcessDebuggingState
	State of active debugging thread.

Detailed Description

p command

Author

Sina Karvandi (sina@.nosp@m.hype.nosp@m.rdbg..nosp@m.org)

Version

0.1

Date

2020-12-29

Copyright

This project is released under the GNU Public License v3.

Function Documentation

CommandP()

VOID CommandP	(	vector< string >	SplitCommand,
		string	Command )

handler of p command

Parameters

SplitCommand
Command

Returns

VOID

{
    UINT32                           StepCount;
    DEBUGGER_REMOTE_STEPPING_REQUEST RequestFormat;
 
    //
    // Validate the commands
    //
    if (SplitCommand.size() != 1 && SplitCommand.size() != 2)
    {
        ShowMessages("incorrect use of the 'p'\n\n");
        CommandPHelp();
        return;
    }
 
    //
    // Set type of request
    //
    RequestFormat = DEBUGGER_REMOTE_STEPPING_REQUEST_STEP_OVER;
 
    //
    // Check if the command has a counter parameter
    //
    if (SplitCommand.size() == 2)
    {
        if (!ConvertStringToUInt32(SplitCommand.at(1), &StepCount))
        {
            ShowMessages("please specify a correct hex value for [count]\n\n");
            CommandPHelp();
            return;
        }
    }
    else
    {
        StepCount = 1;
    }
 
    //
    // Check if the remote serial debuggee or user debugger are paused or not
    //
    if (g_IsSerialConnectedToRemoteDebuggee || g_ActiveProcessDebuggingState.IsActive)
    {
        //
        // Check if the thread is paused or not
        //
        if (g_ActiveProcessDebuggingState.IsActive && !g_ActiveProcessDebuggingState.IsPaused)
        {
            ShowMessages("the target process is running, use the "
                         "'pause' command or press CTRL+C to pause the process\n");
            return;
        }
 
        //
        // Indicate that we're instrumenting
        //
        g_IsInstrumentingInstructions = TRUE;
 
        for (size_t i = 0; i < StepCount; i++)
        {
            //
            // For logging purpose
            //
            // ShowMessages("percentage : %f %% (%x)\n", 100.0 * (i /
            //   (float)StepCount), i);
            //
 
            if (g_IsSerialConnectedToRemoteDebuggee)
            {
                //
                // It's stepping over serial connection in kernel debugger
                //
                KdSendStepPacketToDebuggee(RequestFormat);
            }
            else
            {
                //
                // It's stepping over user debugger
                //
                UdSendStepPacketToDebuggee(g_ActiveProcessDebuggingState.ProcessDebuggingToken,
                                           g_ActiveProcessDebuggingState.ThreadId,
                                           RequestFormat);
            }
 
            if (!SplitCommand.at(0).compare("pr"))
            {
                //
                // Show registers
                //
                HyperDbgRegisterShowAll();
 
                if (i != StepCount - 1)
                {
                    ShowMessages("\n");
                }
            }
 
            //
            // Check if user pressed CTRL+C
            //
            if (!g_IsInstrumentingInstructions)
            {
                break;
            }
        }
 
        //
        // We're not instrumenting instructions anymore
        //
        g_IsInstrumentingInstructions = FALSE;
    }
    else
    {
        ShowMessages("err, stepping (p) is not valid in the current context, you "
                     "should connect to a debuggee\n");
    }
}

CommandPHelp()

VOID CommandPHelp

(

)

help of the p command

Returns

VOID

{
    ShowMessages(
        "p : executes a single instruction (step) and optionally displays the "
        "resulting values of all registers and flags.\n\n");
 
    ShowMessages("syntax : \tp\n");
    ShowMessages("syntax : \tp [Count (hex)]\n");
    ShowMessages("syntax : \tpr\n");
    ShowMessages("syntax : \tpr [Count (hex)]\n");
 
    ShowMessages("\n");
    ShowMessages("\t\te.g : p\n");
    ShowMessages("\t\te.g : pr\n");
    ShowMessages("\t\te.g : pr 1f\n");
}

Variable Documentation

g_ActiveProcessDebuggingState

ACTIVE_DEBUGGING_PROCESS g_ActiveProcessDebuggingState

extern

State of active debugging thread.

{0};

g_IsInstrumentingInstructions

BOOLEAN g_IsInstrumentingInstructions

extern

Shows whether the user is running 't', 'p', or 'i' command.

g_IsSerialConnectedToRemoteDebuggee

BOOLEAN g_IsSerialConnectedToRemoteDebuggee

extern

Shows if the debugger was connected to remote debuggee over (A remote guest)