How do I choose the correct primative?

[Jake Thomas]

Ok, I figured out how to use obj2asm. The trick is to cd to the 
directory holding the file you wish to dissassemble and _not_ 
specify the whole path, or else it throws a confusing "Fatal 
error: unrecognized flag" error.

I ran:

obj2asm intLoadTest.o intLoadTest.d > intLoadTest.s

and got this:


FLAT	group	
	extrn	_main
	public	_deh_beg
	public	_deh_end
	public	_tlsstart
	public	_tlsend
	public	_Dmain
	public	_D11intLoadTest12__ModuleInfoZ
	public	main
	extrn	_d_run_main
	extrn	_Dmain
	extrn	_d_dso_registry
.text	segment
	assume	CS:.text
.text	ends
.data	segment
_D11intLoadTest12__ModuleInfoZ:
	db	004h,010h,000h,000h,000h,000h,000h,000h	;........
	db	069h,06eh,074h,04ch,06fh,061h,064h,054h	;intLoadT
	db	065h,073h,074h,000h	;est.
.data	ends
.bss	segment
.bss	ends
.rodata	segment
.rodata	ends
.tdata	segment
_tlsstart:
	db	000h,000h,000h,000h,000h,000h,000h,000h	;........
	db	000h,000h,000h,000h,000h,000h,000h,000h	;........
.tdata	ends
.tdata.	segment
.tdata.	ends
.text._Dmain	segment
	assume	CS:.text._Dmain
_Dmain:
		push	RBP
		mov	RBP,RSP
		mov	EAX,0Ah
		pop	RBP
		ret
		0f1f
		add	[RAX],R8B
.text._Dmain	ends
.text.main	segment
	assume	CS:.text.main
main:
		push	RBP
		mov	RBP,RSP
		sub	RSP,010h
		mov	RDX,offset FLAT:_Dmain at 64
		call	  _d_run_main at PC32
		leave
		ret
.text.main	ends
.data.d_dso_rec	segment
	db	000h,000h,000h,000h,000h,000h,000h,000h	;........
.data.d_dso_rec	ends
.text.d_dso_init	segment
	assume	CS:.text.d_dso_init
L0:		enter	0,0
		lea	RAX,_deh_end at PC32[RIP]
		push	RAX
		lea	RAX,_deh_beg at PC32[RIP]
		push	RAX
		lea	RAX,FLAT:[00h][RIP]
		push	RAX
		lea	RAX,FLAT:[00h][RIP]
		push	RAX
		lea	RAX,FLAT:.data.d_dso_rec[00h][RIP]
		push	RAX
		push	1
		mov	RDI,RSP
		call	  _d_dso_registry at PLT32
		leave
		ret
.text.d_dso_init	ends
	end

Can you tell whether a 32-bit load was used?

Jake

P.S - That's _way_ less output than what objdump gave!