Increment an integer 1000 times

example1.nasm

; inc(n int) int
00000	TEXT    "".inc(SB), NOSPLIT, $0-16	; function definition
00000	MOVQ	  "".n+8(SP), AX		; move parameter from stack to AX
00005	XORL    CX, CX				; zero out register CX
00007	JMP     15				; go to line 15
00009	INCQ    CX				; increment register CX
00012	INCQ    AX				; increment register AX
00015	CMPQ    CX, $1000			; compare register CX with 1000
00022	JLT     9				; go to line 9
00024	MOVQ    AX, "".~r1+16(SP)		; move AX to stack return value
00029	RET					; return from function