REG_FPRS
reg[REG_FPRS] = bp->sjs_fprs;
dst[R_FPRS] = gregs[REG_FPRS];
prp[R_FPRS] = gr[REG_FPRS];
gr[REG_FPRS] = prp[R_FPRS];
dest->uc_mcontext.gregs[REG_FPRS] =
dest->uc_mcontext.gregs[REG_FPRS] = 0;
fp->fpu_fprs = (uint32_t)grp[REG_FPRS];
grp[REG_FPRS] = fprs;