MIPS Assembly/Miscellaneous Instructions
Move Instructions
[edit | edit source]These instructions conditionally move values between registers. Because they do not change the PC, they do not cause the same pipeline hazards as branches and are therefore faster.
Instruction:
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movz | type:
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R Type |
If rt = 0 then rd ← rs.
Instruction:
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movn | type:
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R Type |
If rt ≠ 0 then rd ← rs.
Immediate Load Instructions
[edit | edit source]Instruction:
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lui | type:
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I Type |
Loads the upper 16 bits of the rt with the imm and fills the lower 16 bits with zeros. Used with ori, which doesn't sign-extend the immediate, these two instructions can be used to fill a register with a 32-bit constant.
Instruction:
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li | type:
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I Type |
A pseudoinstruction that loads a 32-bit constant into the target register. Assemblers will translate this into a lui/ori combination.