Debugging with RADASM

[Grincheux]

I use version 3 of RadAsm and found a menu "Debug".
Does it mean that we can debug our program with RadAsm?
How do I use it?

[ragdog]

Does it mean that we can debug our program with RadAsm?

Yes you can set a Breakpoint in your source to debug your source
its very usefull.

Try it

[Grincheux]

I have seen breakpoints but how do I debug?

[jj2007]

Code: [Select]

.code
start:
  mov eax, 123
  invoke whatever
  int 3    ; <------- breakpoint
Your assembler commandline should contain /Zi
Your linker commandline should contain /debug

- open the executable in OllyDbg
- hit F9 to let the program execute until the breakpoint
- hit F7 or F8 to go forward step by step (F8 does not dive into calls)

[ragdog]

1.Set a Breakpoint with "Toggle breakpoint CTRL+T" on any line in your source
2.Run the Radasm debugger "Debug>>Run shift+7"
3. is your Breakpoint reached in your source can you Trace it with Step into or step Over

And you can Trace step by Step your Source code.

[dedndave]

in windows, there is something called "Just In Time" exception handler
normally, this points to the "Dr Watson" message box that gives you error information when a program crashes
i'm sure you've seen it - for example, if you try to access protected memory, you get error 0x80000005

well, by changing a registry setting, you can change what happens when a program crashes
Jochen gave you a link to Olly Debugger
versions 1.1 and 2 are available
version 1.1 allows source symbols
version 2 has newer features, but he is still working on symbol support

at any rate, when you install Olly - there is a menu item that allows you to set the JIT exception handler to Olly
once you do that, Olly will come up instead of the windows error messages

INT 3 generates an "invalid opcode" exception, causing the JIT handler to come up
so, to debug at a specific spot, we temporarily insert an INT 3 into the code

[ragdog]

@Dave

Grincheux mean the Radasm source code debugger not Olly

[Grincheux]

RagDog, you are right.
I have tested this possibility.
My program opens a file for reading (*.exe). Into visual community 2015 debugger I have no problem but using RadAsm I cannot read the file.
My breakpoint is set far from this point.

[ragdog]

Can you make a small Project for testing?

[Grincheux]

Yes I will do

[HSE]

Hi Grincheux!

What compiler are you using? Apparently the RadAsm Debugger only work with ML. (for sure, in Jwasm the options for debugging don't work)

[jj2007]

(for sure, in Jwasm the options for debugging don't work)

They work perfectly, I use them every day.

[HSE]

Very funny jj!

You can't delete the context.

In that case the expression is:
    (for sure, in Jwasm the options for debugging with RadAsm Debugger don't work)

[Grincheux]

JWAsm

[ragdog]

The Radasm source code debugger works fine