after consulting $GOROOT/pkg/$GOOS_$GOARCH.
	-S
		Print assembly and machine code.
	-V
		Print assembler version and exit.
	-debug
		Dump instructions as they are parsed.
	-dynlink
		Support references to Go symbols defined in other shared libraries.
	-e
		No limit on number of errors reported.
	-gensymabis
		Write symbol ABI information to output file. Don't assemble.
	-o file

<extend> can be UXTB, UXTH, UXTW, UXTX, SXTB, SXTH, SXTW or SXTX.

Examples:

	ADDS R19.UXTB<<4, R9, R26     <=>    adds x26, x9, w19, uxtb #4
	ADDSW R14.SXTX, R14, R6       <=>    adds w6, w14, w14, sxtx

Memory references: [<Xn|SP>{,#0}] is written as (Rn|RSP), a base register and an immediate
offset is written as imm(Rn|RSP), a base register and an offset register is written as (Rn|RSP)(Rm).

Examples: