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use core::fmt; #[derive(Copy, Clone, PartialOrd, PartialEq)] #[repr(u32)] pub enum Register { Zero = 0, Ra, Sp, Gp, Tp, T0, T1, T2, Fp, S1, A0, A1, A2, A3, A4, A5, A6, A7, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, T3, T4, T5, T6, } impl fmt::Debug for Register { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { const LUT: [&str; 32] = [ "zero", "ra", "sp", "gp", "tp", "t0", "t1", "t2", "fp", "s1", "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "s2", "s3", "s4", "s5", "s6", "s7", "s8", "s9", "s10", "s11", "t3", "t4", "t5", "t6", ]; let idx: u32 = (*self).into(); write!(f, "{}", LUT[idx as usize]) } } impl From<u32> for Register { fn from(raw: u32) -> Register { unsafe { core::mem::transmute(raw) } } } impl Into<u32> for Register { fn into(self) -> u32 { unsafe { core::mem::transmute(self) } } }