Instruction set
The MIPS64 ISA is an extension of the MIPS32 ISA, so it includes all of the instructions and features of the MIPS32 ISA.
| Category | Description |
|---|---|
Data processing | Instructions that perform arithmetic and logical operations on data stored in registers or memory |
Control flow | Instructions that allow the processor to change the flow of execution in a program |
Memory access | Instructions that allow the processor to read from and write to memory |
Floating point | Instructions that support the use of floating point numbers in programs |
Multimedia | Instructions that are optimized for processing multimedia data, such as audio and video |
Overall, the MIPS64 instruction set includes a wide range of instructions designed to support a variety of different types of applications and workloads.
Data processing
| Instruction | Description |
|---|---|
| Add or subtract two 64-bit values and store the result in a register |
| Multiply or divide two 64-bit values and store the result in a register |
| Add or subtract a 64-bit value and an immediate value and store the result in a register |
| Add or subtract a 64-bit value and an immediate value (unsigned) and store the result in a register |
| Multiply or divide two 64-bit values (unsigned) and store the result in a register |
These instructions allow the processor to perform arithmetic operations on 64-bit values, which can be useful in applications that require the use of large integers or pointers. They are not present in the MIPS32 instruction set, but are available in the MIPS64 instruction set.
Control flow
| Instruction | Description |
|---|---|
| Jump to a new address and store the return address in a register, with the option to specify a hint for the target address |
| Branch to a new address if a value is equal to or not equal to zero, and store the return address in a register |
| Branch to a new address if a value is greater than or equal to or less than or equal to zero, and store the return address in a register |
| Branch to a new address if a value is greater than or equal to or less than or equal to zero (likely), and store the return address in a register |
These instructions allow the processor to change the flow of execution in a program, with the added ability to store the return address in a register and to provide a hint for the target address. They are not present in the MIPS32 instruction set, but are available in the MIPS64 instruction set.
Memory access
| Instruction | Description |
|---|---|
| Load or store a 64-bit value from or to memory |
| Load or store a 64-bit value from or to memory (unsigned) |
| Load a linked or store a conditional 64-bit value from or to memory |
These instructions allow the processor to access 64-bit values in memory, which can be useful in applications that require the use of large integers or pointers. They are not present in the MIPS32 instruction set, but are available in the MIPS64 instruction set.
Floating point
| Instruction | Description |
|---|---|
| Add or subtract two 64-bit floating point values and store the result in a register |
| Multiply or divide two 64-bit floating point values and store the result in a register |
| Convert a 32-bit or 64-bit integer value to a 64-bit floating point value and store the result in a register |
| Convert a 64-bit floating point value to a 32-bit or 64-bit integer value and store the result in a register |
These instructions allow the processor to perform arithmetic operations on 64-bit floating point values, as well as to convert between floating point and integer formats. They are not present in the MIPS32 instruction set, but are available in the MIPS64 instruction set.
Multimedia
| Instruction | Description |
|---|---|
| Pack 64-bit integers into a single register |
| Unpack 64-bit integers from a single register |
| Perform an addition operation on packed data |
| Perform a multiplication operation on packed data |
These instructions are optimized for processing multimedia data, such as audio and video. They allow the processor to perform operations on packed data (e.g. packed 64-bit integers) and to perform SIMD (Single Instruction, Multiple Data) operations. They are not present in the MIPS32 instruction set, but are available in the MIPS64 instruction set.
Resources
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