sh

Store halfword

Store 16 bits of data from register xs2 to an address formed by adding xs1 to a signed offset.

Assembly format

sh xs2, imm(xs1)

Decode Variables

signed Bits<12> imm = sext({$encoding[31:25], $encoding[11:7]}, 12);
Bits<5> xs2 = $encoding[24:20];
Bits<5> xs1 = $encoding[19:15];

Execution

XReg virtual_address = X[xs1] + $signed(imm);
write_memory(16, virtual_address, X[xs2][15:0], $encoding);

Exceptions

This instruction may result in the following synchronous exceptions:

  • LoadAccessFault

  • StoreAmoAccessFault

  • StoreAmoAddressMisaligned

  • StoreAmoPageFault

Encoding

svg

Defining extension

I

Access

M

Always

Containing profiles

  • Mandatory: RVA20S64, RVA20U64, RVA22S64, RVA22U64, RVA23S64, RVA23U64, RVB23S64, RVB23U64, RVI20U32, RVI20U64

  • Optional: None