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<edelsohn@npac.syr.edu>. (powerpc_operands): Add operands SPRBAT and SPRG. Split TBR out of SPR. (FXM_MASK): Define. (insert_tbr): New static function. (extract_tbr): New static function. (XFXFXM_MASK, XFXM): Define. (XSPRBAT_MASK, XSPRG_MASK): Define. (powerpc_opcodes): Add instructions to access special registers by name. Add mtcr and mftbu.