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; -------------------------------------------------------------
; A 64-bit function that returns the maximum value of its three
64-bit integer
; arguments. The function has signature:
;
; int64_t maxofthree(int64_t x, int64_t y, int64_t z)
;
; Note that the parameters have already been passed in rdi,
rsi, and rdx. We
; just have to return the value in rax.
; -------------------------------------------------------------
global maxofthree
section .text
maxofthree:
mov rax, rdi ; result (rax) initially holds x
cmp rax, rsi ; is x less than y?
cmovl rax, rsi ; if so, set result to y
cmp rax, rdx ; is max(x,y) less than z?
cmovl rax, rdx ; if so, set result to z
ret ; the max will be in rax