mm_fp4_format
struct mm_fp4_format mm_fp4_format;
mips32_insn.r_format.rs = insn.mm_fp4_format.fs;
(insn.mm_fp4_format.cc << 2) + op;
mips32_insn.r_format.rd = insn.mm_fp4_format.rt;
sdps_format[insn.mm_fp4_format.fmt];
mips32_insn.fp0_format.ft = insn.mm_fp4_format.rt;
mips32_insn.fp0_format.fs = insn.mm_fp4_format.fs;
mips32_insn.fp0_format.fd = insn.mm_fp4_format.cc << 2;
insn.mm_fp4_format.cond | MM_MIPS32_COND_FC;