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- #
- # This file is part of the program psim.
- #
- # Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
- #
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 2 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- #
- #
- # Instruction unpacking:
- #
- # Once the instruction has been decoded, the register (and other)
- # fields within the instruction need to be extracted.
- #
- # The table that follows determines how each field should be treated.
- # Importantly it considers the case where the extracted field is to
- # be used immediatly or stored in an instruction cache.
- #
- # <valid>
- #
- # Zero marks the end of the table. More importantly 1. indicates
- # that the entry is valid and can be cached. 2. indicates that that
- # the entry is valid but can not be cached.
- #
- # <old_name>
- #
- # The field name as given in the instruction spec.
- #
- # <new_name>
- #
- # A name for <old_name> once it has been extracted from the
- # instructioin (and possibly stored in the instruction cache).
- #
- # <type>
- #
- # String specifying the storage type for <new_name> (the extracted
- # field>.
- #
- # <expression>
- #
- # Specifies how to get <new_name> from <old_name>. If null, old and
- # new name had better be the same. */
- #
- #
- 1:RA:RA::
- 1:RA:rA:signed_word *:(cpu_registers(processor)->gpr + RA)
- 1:RA:RA_BITMASK:unsigned32:(1 << RA)
- 1:RT:RT::
- 1:RT:rT:signed_word *:(cpu_registers(processor)->gpr + RT)
- 1:RT:RT_BITMASK:unsigned32:(1 << RT)
- 2:RS:RS::
- 1:RS:rS:signed_word *:(cpu_registers(processor)->gpr + RS)
- 1:RS:RS_BITMASK:unsigned32:(1 << RS)
- 2:RB:RB::
- 1:RB:rB:signed_word *:(cpu_registers(processor)->gpr + RB)
- 1:RB:RB_BITMASK:unsigned32:(1 << RB)
- 2:FRA:FRA::
- 1:FRA:frA:unsigned64 *:(cpu_registers(processor)->fpr + FRA)
- 1:FRA:FRA_BITMASK:unsigned32:(1 << FRA)
- 2:FRB:FRB::
- 1:FRB:frB:unsigned64 *:(cpu_registers(processor)->fpr + FRB)
- 1:FRB:FRB_BITMASK:unsigned32:(1 << FRB)
- 2:FRC:FRC::
- 1:FRC:frC:unsigned64 *:(cpu_registers(processor)->fpr + FRC)
- 1:FRC:FRC_BITMASK:unsigned32:(1 << FRC)
- 2:FRS:FRS::
- 1:FRS:frS:unsigned64 *:(cpu_registers(processor)->fpr + FRS)
- 1:FRS:FRS_BITMASK:unsigned32:(1 << FRS)
- 2:FRT:FRT::
- 1:FRT:frT:unsigned64 *:(cpu_registers(processor)->fpr + FRT)
- 1:FRT:FRT_BITMASK:unsigned32:(1 << FRT)
- 1:SI:EXTS_SI:unsigned_word:((signed_word)(signed16)instruction)
- 2:BI:BI::
- 1:BI:BIT32_BI::BIT32(BI)
- 1:BF:BF::
- 1:BF:BF_BITMASK:unsigned32:(1 << BF)
- 2:BA:BA::
- 1:BA:BIT32_BA::BIT32(BA)
- 1:BA:BA_BITMASK:unsigned32:(1 << BA)
- 2:BB:BB::
- 1:BB:BIT32_BB::BIT32(BB)
- 1:BB:BB_BITMASK:unsigned32:(1 << BB)
- 1:BT:BT::
- 1:BT:BT_BITMASK:unsigned32:(1 << BT)
- 1:BD:EXTS_BD_0b00:unsigned_word:(((signed_word)(signed16)instruction) & ~3)
- #1:BD:CIA_plus_EXTS_BD_0b00:unsigned_word:CIA + EXTS(BD_0b00)
- 1:LI:EXTS_LI_0b00:unsigned_word:((((signed_word)(signed32)(instruction << 6)) >> 6) & ~0x3)
- 1:D:EXTS_D:unsigned_word:((signed_word)(signed16)(instruction))
- 1:DS:EXTS_DS_0b00:unsigned_word:(((signed_word)(signed16)instruction) & ~0x3)
-