ref: 83b854df0d2a98ca35f8d3215e7fe34531563b20 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