19 lines
249 B
ArmAsm
19 lines
249 B
ArmAsm
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#include "textflag.h"
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// func Sum(xs []uint64) uint64
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TEXT ·Sum(SB),0,$0-32
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MOVQ xs_base(FP), DX
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MOVQ xs_len+8(FP), CX
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XORQ AX, AX
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loop:
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CMPQ CX, $0x0
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JE done
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ADDQ (DX), AX
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ADDQ $0x8, DX
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DECQ CX
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JMP loop
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done:
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MOVQ AX, ret+24(FP)
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RET
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