ref: 2c32f151555ed98d2509f12c90c8acdc2ee2016e dir: /sys/src/libc/amd64/muldiv.s/
TEXT umuldiv(SB), $0 MOVL RARG, AX MULL b+8(FP) DIVL c+16(FP) RET TEXT muldiv(SB), $0 MOVL RARG, AX IMULL b+8(FP) IDIVL c+16(FP) RET END