examples/lib/sub.s - third_party/github/bazel-contrib/rules_go - Git at Google

 #include "textflag.h"

 TEXT ·sub(SB),NOSPLIT,$0
 	MOVQ x+0(FP), BX
 	MOVQ y+8(FP), BP
 	SUBQ BP, BX
 	MOVQ BX, ret+16(FP)
 	RET
	#include "textflag.h"

	TEXT ·sub(SB),NOSPLIT,$0
	MOVQ x+0(FP), BX
	MOVQ y+8(FP), BP
	SUBQ BP, BX
	MOVQ BX, ret+16(FP)
	RET