Subversion Repositories mips_enhanced

------------------------------------------------------------------------------

--  This file is a part of the GRLIB VHDL IP LIBRARY

--  Copyright (C) 2003, Gaisler Research

--

--  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 

-----------------------------------------------------------------------------   

-- package:     opcodes

-- File:        opcodes.vhd

-- Author:      Jiri Gaisler

-- Description: Instruction definitions according to the SPARC V8 manual.

------------------------------------------------------------------------------  

library ieee;

use ieee.std_logic_1164.all;

package sparc is

-- op decoding (inst(31 downto 30))

subtype op_type is std_logic_vector(1 downto 0);

constant FMT2     : op_type := "00";

constant CALL     : op_type := "01";

constant FMT3     : op_type := "10";

constant LDST     : op_type := "11";

-- op2 decoding (inst(24 downto 22))

subtype op2_type is std_logic_vector(2 downto 0);

constant UNIMP    : op2_type := "000";

constant BICC     : op2_type := "010";

constant SETHI    : op2_type := "100";

constant FBFCC    : op2_type := "110";

constant CBCCC    : op2_type := "111";

-- op3 decoding (inst(24 downto 19))

subtype op3_type is std_logic_vector(5 downto 0);

constant IADD     : op3_type := "000000";

constant IAND     : op3_type := "000001";

constant IOR      : op3_type := "000010";

constant IXOR     : op3_type := "000011";

constant ISUB     : op3_type := "000100";

constant ANDN     : op3_type := "000101";

constant ORN      : op3_type := "000110";

constant IXNOR    : op3_type := "000111";

constant ADDX     : op3_type := "001000";

constant UMUL     : op3_type := "001010";

constant SMUL     : op3_type := "001011";

constant SUBX     : op3_type := "001100";

constant UDIV     : op3_type := "001110";

constant SDIV     : op3_type := "001111";

constant ADDCC    : op3_type := "010000";

constant ANDCC    : op3_type := "010001";

constant ORCC     : op3_type := "010010";

constant XORCC    : op3_type := "010011";

constant SUBCC    : op3_type := "010100";

constant ANDNCC   : op3_type := "010101";

constant ORNCC    : op3_type := "010110";

constant XNORCC   : op3_type := "010111";

constant ADDXCC   : op3_type := "011000";

constant UMULCC   : op3_type := "011010";

constant SMULCC   : op3_type := "011011";

constant SUBXCC   : op3_type := "011100";

constant UDIVCC   : op3_type := "011110";

constant SDIVCC   : op3_type := "011111";

constant TADDCC   : op3_type := "100000";

constant TSUBCC   : op3_type := "100001";

constant TADDCCTV : op3_type := "100010";

constant TSUBCCTV : op3_type := "100011";

constant MULSCC   : op3_type := "100100";

constant ISLL     : op3_type := "100101";

constant ISRL     : op3_type := "100110";

constant ISRA     : op3_type := "100111";

constant RDY      : op3_type := "101000";

constant RDPSR    : op3_type := "101001";

constant RDWIM    : op3_type := "101010";

constant RDTBR    : op3_type := "101011";

constant WRY      : op3_type := "110000";

constant WRPSR    : op3_type := "110001";

constant WRWIM    : op3_type := "110010";

constant WRTBR    : op3_type := "110011";

constant FPOP1    : op3_type := "110100";

constant FPOP2    : op3_type := "110101";

constant CPOP1    : op3_type := "110110";

constant CPOP2    : op3_type := "110111";

constant JMPL     : op3_type := "111000";

constant TICC     : op3_type := "111010";

constant FLUSH    : op3_type := "111011";

constant RETT     : op3_type := "111001";

constant SAVE     : op3_type := "111100";

constant RESTORE  : op3_type := "111101";

constant UMAC     : op3_type := "111110";

constant SMAC     : op3_type := "111111";

constant LD       : op3_type := "000000";

constant LDUB     : op3_type := "000001";

constant LDUH     : op3_type := "000010";

constant LDD      : op3_type := "000011";

constant LDSB     : op3_type := "001001";

constant LDSH     : op3_type := "001010";

constant LDSTUB   : op3_type := "001101";

constant SWAP     : op3_type := "001111";

constant LDA      : op3_type := "010000";

constant LDUBA    : op3_type := "010001";

constant LDUHA    : op3_type := "010010";

constant LDDA     : op3_type := "010011";

constant LDSBA    : op3_type := "011001";

constant LDSHA    : op3_type := "011010";

constant LDSTUBA  : op3_type := "011101";

constant SWAPA    : op3_type := "011111";

constant LDF      : op3_type := "100000";

constant LDFSR    : op3_type := "100001";

constant LDDF     : op3_type := "100011";

constant LDC      : op3_type := "110000";

constant LDCSR    : op3_type := "110001";

constant LDDC     : op3_type := "110011";

constant ST       : op3_type := "000100";

constant STB      : op3_type := "000101";

constant STH      : op3_type := "000110";

constant ISTD     : op3_type := "000111";

constant STA      : op3_type := "010100";

constant STBA     : op3_type := "010101";

constant STHA     : op3_type := "010110";

constant STDA     : op3_type := "010111";

constant STF      : op3_type := "100100";

constant STFSR    : op3_type := "100101";

constant STDFQ    : op3_type := "100110";

constant STDF     : op3_type := "100111";

constant STC      : op3_type := "110100";

constant STCSR    : op3_type := "110101";

constant STDCQ    : op3_type := "110110";

constant STDC     : op3_type := "110111";

-- bicc decoding (inst(27 downto 25))

constant BA  : std_logic_vector(3 downto 0) := "1000";

-- fpop1 decoding

subtype fpop_type is std_logic_vector(8 downto 0);

constant FITOS    : fpop_type := "011000100";

constant FITOD    : fpop_type := "011001000";

constant FSTOI    : fpop_type := "011010001";

constant FDTOI    : fpop_type := "011010010";

constant FSTOD    : fpop_type := "011001001";

constant FDTOS    : fpop_type := "011000110";

constant FMOVS    : fpop_type := "000000001";

constant FNEGS    : fpop_type := "000000101";

constant FABSS    : fpop_type := "000001001";

constant FSQRTS   : fpop_type := "000101001";

constant FSQRTD   : fpop_type := "000101010";

constant FADDS    : fpop_type := "001000001";

constant FADDD    : fpop_type := "001000010";

constant FSUBS    : fpop_type := "001000101";

constant FSUBD    : fpop_type := "001000110";

constant FMULS    : fpop_type := "001001001";

constant FMULD    : fpop_type := "001001010";

constant FSMULD   : fpop_type := "001101001";

constant FDIVS    : fpop_type := "001001101";

constant FDIVD    : fpop_type := "001001110";

-- fpop2 decoding

constant FCMPS    : fpop_type := "001010001";

constant FCMPD    : fpop_type := "001010010";

constant FCMPES   : fpop_type := "001010101";

constant FCMPED   : fpop_type := "001010110";

-- trap type decoding

subtype trap_type is std_logic_vector(5 downto 0);

constant TT_IAEX   : trap_type := "000001";

constant TT_IINST  : trap_type := "000010";

constant TT_PRIV   : trap_type := "000011";

constant TT_FPDIS  : trap_type := "000100";

constant TT_WINOF  : trap_type := "000101";

constant TT_WINUF  : trap_type := "000110";

constant TT_UNALA  : trap_type := "000111";

constant TT_FPEXC  : trap_type := "001000";

constant TT_DAEX   : trap_type := "001001";

constant TT_TAG    : trap_type := "001010";

constant TT_WATCH  : trap_type := "001011";

constant TT_DSU    : trap_type := "010000";

constant TT_PWD    : trap_type := "010001";

constant TT_RFERR  : trap_type := "100000";

constant TT_IAERR  : trap_type := "100001";

constant TT_CPDIS  : trap_type := "100100";

constant TT_CPEXC  : trap_type := "101000";

constant TT_DIV    : trap_type := "101010";

constant TT_DSEX   : trap_type := "101011";

constant TT_TICC   : trap_type := "111111";

-- Alternate address space identifiers (only 5 lsb bist are used)

subtype asi_type is std_logic_vector(4 downto 0);

constant ASI_SYSR    : asi_type := "00010"; -- 0x02

constant ASI_UINST   : asi_type := "01000"; -- 0x08

constant ASI_SINST   : asi_type := "01001"; -- 0x09

constant ASI_UDATA   : asi_type := "01010"; -- 0x0A

constant ASI_SDATA   : asi_type := "01011"; -- 0x0B

constant ASI_ITAG    : asi_type := "01100"; -- 0x0C

constant ASI_IDATA   : asi_type := "01101"; -- 0x0D

constant ASI_DTAG    : asi_type := "01110"; -- 0x0E

constant ASI_DDATA   : asi_type := "01111"; -- 0x0F

constant ASI_IFLUSH  : asi_type := "10000"; -- 0x10

constant ASI_DFLUSH  : asi_type := "10001"; -- 0x11

constant ASI_FLUSH_PAGE     : std_logic_vector(4 downto 0) := "10000";  -- 0x10 i/dcache flush page

constant ASI_FLUSH_CTX      : std_logic_vector(4 downto 0) := "10011";  -- 0x13 i/dcache flush ctx

constant ASI_DCTX           : std_logic_vector(4 downto 0) := "10100";  -- 0x14 dcache ctx

constant ASI_ICTX           : std_logic_vector(4 downto 0) := "10101";  -- 0x15 icache ctx

constant ASI_MMUFLUSHPROBE  : std_logic_vector(4 downto 0) := "11000";  -- 0x18 i/dtlb flush/(probe)

constant ASI_MMUREGS        : std_logic_vector(4 downto 0) := "11001";  -- 0x19 mmu regs access

constant ASI_MMU_BP         : std_logic_vector(4 downto 0) := "11100";  -- 0x1c mmu Bypass 

constant ASI_MMU_DIAG       : std_logic_vector(4 downto 0) := "11101";  -- 0x1d mmu diagnostic 

--constant ASI_MMU_DSU        : std_logic_vector(4 downto 0) := "11111";  -- 0x1f mmu diagnostic 

constant ASI_MMUSNOOP_DTAG  : std_logic_vector(4 downto 0) := "11110";  -- 0x1e mmusnoop physical dtag 

-- ftt decoding

subtype ftt_type is std_logic_vector(2 downto 0);

constant FPIEEE_ERR  : ftt_type := "001";

constant FPSEQ_ERR   : ftt_type := "100";

constant FPHW_ERR    : ftt_type := "101";

end;