[GTALUG] reverse engineering

[David Collier-Brown]

On 2019-03-14 3:40 p.m., Kevin Cozens via talk wrote:
> I've tried several decompilers but they didn't work, or wouldn't even 
> compile. I looked at boomerang, Hopper, snowman, retdec, and reko. The 
> ones that work wouldn't handle the architecture. The ghidra decompiler 
> has been the only one that has proven useful. I haven't read enough 
> about it to know how to save source code out of it but I can browse 
> decompiled output which is at least the first step in reconstituting 
> source code.

In a previous life, I wrote a z80 decompiler that used printf to format 
the output.  After a little whille futzing with assembler syntax, I 
changed it to produce output like

    1132	*hl ?= '\n'

    1133	if !== goto 1135

    1134	hl++

    1135	return

which made it easy for me to create c programs that did the same thing, 
modulo bugs.

    if (*hl == '\n') {

         hl++
    }

    return

--dave

-- 
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
davecb at spamcop.net           |                      -- Mark Twain

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