The R5900 has a set of 93 specific 128-bit multimedia instructions (MMIs). It is reasonable to limit the implementation to the R5900 n32 ABI, to begin with. Most of the opcode symbol definitions are already part of QEMU. The opcode functions need to implemented, in addition to widening the general purpose registers (GPRs) to 128 bits.
The R5900 has a set of 93 specific 128-bit multimedia instructions (MMIs). It is reasonable to limit the implementation to the R5900 n32 ABI, to begin with. Most of the opcode symbol definitions are already part of QEMU. The opcode functions need to implemented, in addition to widening the general purpose registers (GPRs) to 128 bits.