nasm/test/nop.asm

;Testname=unoptimized; Arguments=-fbin -onop.bin;     Files=stdout stderr nop.bin
;Testname=optimized;   Arguments=-fbin -onop.bin -Ox; Files=stdout stderr nop.bin

	bits 64

	nop
	o64 nop
	pause
	o64 pause

	xchg ax,ax
	xchg eax,eax
	xchg rax,rax
	
	rep xchg ax,ax
	rep xchg eax,eax
	rep xchg rax,rax
test: change .stdout/.stderr to stdout/stderr Using hidden files are rather antisocial, and rather pointless in this particular context. Change .stdout and .stderr to simply stdout and stderr. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 2008-10-06 18:27:30 -07:00			`;Testname=unoptimized; Arguments=-fbin -onop.bin; Files=stdout stderr nop.bin`
			`;Testname=optimized; Arguments=-fbin -onop.bin -Ox; Files=stdout stderr nop.bin`
Configure tests to be performed automatically 2008-04-23 15:05:31 +02:00
Un-special-case "xchg rax,rax"; disassemble o64 Un-special-case "xchg rax,rax"; allow it to be encoded as 48 90 for orthogonality's sake. It's a no-op, to be sure, but so are many other instructions. "xchg eax,eax" is still special-cased in 64-bit mode since it is not a no-op; unadorned opcode 90 is now simply "nop" and nothing else. Make the disassembler detect unused REX.W and display them as an "o64" prefix. 2007-11-12 22:55:27 -08:00			`bits 64`

			`nop`
			`o64 nop`
			`pause`
			`o64 pause`

			`xchg ax,ax`
			`xchg eax,eax`
			`xchg rax,rax`

			`rep xchg ax,ax`
			`rep xchg eax,eax`
			`rep xchg rax,rax`