Re: [Luxasm-devel] Official release of the Twelve Assembly Lessons

[Frank K. <fbk...@ve...>]

Evenbit wrote:
> On Jul 11, 8:55 pm, Frank Kotler <fbk...@ve...> wrote:
> 
>>strace ./luxasm.dbg 2> lux.tra gives me:
>>
>>execve("./luxasm.dbg", ["luxasm.dbg"], [/* 36 vars */]) = 0
>>brk(0)                                  = 0x806186c
>>brk(0x8361880)                          = 0x8361880
>>write(1, "luxasm.dbg", 10)              = 10
>>write(1, " [options]\n\t-i <name>         Fi"..., 191) = 191
>>_exit(1)                                = ?
>>
>>Can you try that and let me know where it stops?
> 
> 
> execve("./luxasm.dbg", ["./luxasm.dbg"], [/* 36 vars */]) = 0
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++

Oh, my! Very early...

	procedure start, n, v, e
	  locals counter, name
	  mov eax, [ local v ]			; Initialise subsystems
	  mov eax, [ eax ]
	  cld
	  mov [ local name ], eax
	  mov [ luxasm_command ], eax
	  call Memory.initialise

The "brk(0)" occurs in Memory.initialise, so we're not even getting that 
far. I suspect "mov eax, [eax]", which suggests we're not finding 
"argv[0]" - the program name. A wild guess, without being able to 
duplicate it. If "they" have changed the startup stack from one version 
to another, we're totally gefukt. Oh, my!

In spite of the fact that LuxAsm is generally considered to be "dead", 
*I* consider this valuable feedback (if not entirely welcome news). 
Thanks, Nathan!

Best,
Frank