github.com/antonblanchard.microwatt
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antonblanchard.microwatt/decode1.vhdl
Anton Blanchard 9fbaea6f08 Rework CR file and add forwarding 
Handle the CR as a single field with per nibble enables. Forward any
writes in the same cycle.

If this proves to be an issue for timing, we may want to revisit
this in the future. For now, it keeps things simple.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
2019-09-09 10:18:10 +10:00

848 lines
51 KiB
VHDL
Raw Blame History

library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
library work;
use work.common.all;
use work.decode_types.all;
entity decode1 is
port (
clk : in std_ulogic;
f_in : in Fetch2ToDecode1Type;
d_out : out Decode1ToDecode2Type
);
end entity decode1;
architecture behaviour of decode1 is
signal f : Fetch2ToDecode1Type := Fetch2ToDecode1Init;
type decode_rom_array_t is array(ppc_insn_t) of decode_rom_t;
-- Note: reformat with column -t -o ' '
constant decode_rom_array : decode_rom_array_t := (
-- unit internal in1 in2 in3 out const const const CR CR cry cry ldst ld BR sgn upd mul mul rc lk
-- op 1 2 3 in out in out len ext 32 sgn
PPC_ILLEGAL => (ALU, OP_ILLEGAL, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_ADD => (ALU, OP_ADD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_ADDC => (ALU, OP_ADDC, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_ADDE => (ALU, OP_ADDC, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
--PPC_ADDEX
PPC_ADDI => (ALU, OP_ADD, RA_OR_ZERO, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_ADDIC => (ALU, OP_ADDC, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_ADDIC_RC => (ALU, OP_ADDC, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', ONE, '0'),
PPC_ADDIS => (ALU, OP_ADD, RA_OR_ZERO, CONST_SI_HI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_ADDME
--PPC_ADDPCIS
PPC_ADDZE => (ALU, OP_ADDC, RA, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_AND => (ALU, OP_AND, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_ANDC => (ALU, OP_ANDC, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_ANDI_RC => (ALU, OP_AND, RS, CONST_UI, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', ONE, '0'),
PPC_ANDIS_RC => (ALU, OP_AND, RS, CONST_UI_HI, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', ONE, '0'),
PPC_ATTN => (ALU, OP_ILLEGAL, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_B => (ALU, OP_B, NONE, CONST_LI, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '1'),
--PPC_BA
PPC_BC => (ALU, OP_BC, NONE, CONST_BD, NONE, NONE, BO, BI, NONE, '1', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '1'),
--PPC_BCA
PPC_BCCTR => (ALU, OP_BCCTR, NONE, NONE, NONE, NONE, BO, BI, BH, '1', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '1'),
--PPC_BCLA
PPC_BCLR => (ALU, OP_BCLR, NONE, NONE, NONE, NONE, BO, BI, BH, '1', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '1'),
--PPC_BCTAR
--PPC_BPERM
PPC_CMP => (ALU, OP_CMP, RA, RB, NONE, NONE, BF, L, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_CMPB => (ALU, OP_CMPB, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_CMPEQB
PPC_CMPI => (ALU, OP_CMP, RA, CONST_SI, NONE, NONE, BF, L, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_CMPL => (ALU, OP_CMPL, RA, RB, NONE, NONE, BF, L, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_CMPLI => (ALU, OP_CMPL, RA, CONST_UI, NONE, NONE, BF, L, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_CMPRB
PPC_CNTLZD => (ALU, OP_CNTLZD, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_CNTLZW => (ALU, OP_CNTLZW, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_CNTTZD => (ALU, OP_CNTTZD, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_CNTTZW => (ALU, OP_CNTTZW, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
--PPC_CRAND
--PPC_CRANDC
--PPC_CREQV
--PPC_CRNAND
--PPC_CRNOR
--PPC_CROR
--PPC_CRORC
--PPC_CRXOR
--PPC_DARN
PPC_DCBF => (ALU, OP_NOP, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_DCBST => (ALU, OP_NOP, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_DCBT => (ALU, OP_NOP, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_DCBTST => (ALU, OP_NOP, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_DCBZ
PPC_DIVD => (ALU, OP_DIVD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
--PPC_DIVDE
--PPC_DIVDEU
PPC_DIVDU => (ALU, OP_DIVDU, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_DIVW => (ALU, OP_DIVW, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
--PPC_DIVWE
--PPC_DIVWEU
PPC_DIVWU => (ALU, OP_DIVWU, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_EQV => (ALU, OP_EQV, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_EXTSB => (ALU, OP_EXTSB, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_EXTSH => (ALU, OP_EXTSH, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_EXTSW => (ALU, OP_EXTSW, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
--PPC_EXTSWSLI
--PPC_ICBI
PPC_ICBT => (ALU, OP_NOP, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_ISEL => (ALU, OP_ISEL, RA_OR_ZERO, RB, NONE, RT, BC, NONE, NONE, '1', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_ISYNC => (ALU, OP_NOP, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LBARX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '0', '1', '0', '0', NONE, '0'),
--CONST_LI matches CONST_SI, so reuse it
PPC_LBZ => (LDST, OP_LOAD, RA_OR_ZERO, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LBZU => (LDST, OP_LOAD, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_LBZUX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_LBZX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LD => (LDST, OP_LOAD, RA_OR_ZERO, CONST_DS, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LDARX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '0', '1', '0', '0', NONE, '0'),
PPC_LDBRX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '1', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LDU => (LDST, OP_LOAD, RA, CONST_DS, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_LDUX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_LDX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LHA => (LDST, OP_LOAD, RA_OR_ZERO, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '1', '0', '0', '0', '0', NONE, '0'),
PPC_LHARX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '0', '1', '0', '0', NONE, '0'),
PPC_LHAU => (LDST, OP_LOAD, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '1', '1', '0', '0', '0', NONE, '0'),
PPC_LHAUX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '1', '1', '0', '0', '0', NONE, '0'),
PPC_LHAX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '1', '0', '0', '0', '0', NONE, '0'),
PPC_LHBRX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '1', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LHZ => (LDST, OP_LOAD, RA_OR_ZERO, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LHZU => (LDST, OP_LOAD, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_LHZUX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_LHZX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LWA => (LDST, OP_LOAD, RA_OR_ZERO, CONST_DS, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '1', '0', '0', '0', '0', NONE, '0'),
PPC_LWARX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '0', '1', '0', '0', NONE, '0'),
PPC_LWAUX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '1', '1', '0', '0', '0', NONE, '0'),
PPC_LWAX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '1', '0', '0', '0', '0', NONE, '0'),
PPC_LWBRX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '1', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LWZ => (LDST, OP_LOAD, RA_OR_ZERO, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_LWZU => (LDST, OP_LOAD, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_LWZUX => (LDST, OP_LOAD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_LWZX => (LDST, OP_LOAD, RA_OR_ZERO, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_MADDHD
--PPC_MADDHDU
--PPC_MADDLD
--PPC_MCRF
--PPC_MCRXR
--PPC_MCRXRX
PPC_MFCR => (ALU, OP_MFCR, NONE, NONE, NONE, RT, NONE, NONE, NONE, '1', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_MFOCRF => (ALU, OP_MFOCRF, NONE, NONE, NONE, RT, FXM, NONE, NONE, '1', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_MFCTR => (ALU, OP_MFCTR, NONE, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_MFLR => (ALU, OP_MFLR, NONE, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_MFTB => (ALU, OP_MFTB, NONE, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_MTCTR => (ALU, OP_MTCTR, RS, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_MTLR => (ALU, OP_MTLR, RS, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_MFSPR
--PPC_MODSD
--PPC_MODSW
--PPC_MODUD
--PPC_MODUW
PPC_MTCRF => (ALU, OP_MTCRF, RS, NONE, NONE, NONE, FXM, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_MTOCRF => (ALU, OP_MTOCRF, RS, NONE, NONE, NONE, FXM, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_MTSPR
PPC_MULHD => (MUL, OP_MUL_H64, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '1', RC, '0'),
PPC_MULHDU => (MUL, OP_MUL_H64, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_MULHW => (MUL, OP_MUL_H32, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '1', '1', RC, '0'),
PPC_MULHWU => (MUL, OP_MUL_H32, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '1', '0', RC, '0'),
PPC_MULLD => (MUL, OP_MUL_L64, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '1', RC, '0'),
PPC_MULLI => (MUL, OP_MUL_L64, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '0', '1', NONE, '0'),
PPC_MULLW => (MUL, OP_MUL_L64, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '1', '0', '0', NONE, '0', '0', '0', '0', '1', '1', RC, '0'),
PPC_NAND => (ALU, OP_NAND, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_NEG => (ALU, OP_NEG, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_NOR => (ALU, OP_NOR, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_OR => (ALU, OP_OR, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_ORC => (ALU, OP_ORC, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_ORI => (ALU, OP_OR, RS, CONST_UI, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_ORIS => (ALU, OP_OR, RS, CONST_UI_HI, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_POPCNTB => (ALU, OP_POPCNTB, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_POPCNTD => (ALU, OP_POPCNTD, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_POPCNTW => (ALU, OP_POPCNTW, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_PRTYD => (ALU, OP_PRTYD, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_PRTYW => (ALU, OP_PRTYW, RS, NONE, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_RLDCL => (ALU, OP_RLDCL, RS, RB, NONE, RA, NONE, MB, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_RLDCR => (ALU, OP_RLDCR, RS, RB, NONE, RA, NONE, MB, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_RLDIC => (ALU, OP_RLDIC, RS, NONE, NONE, RA, SH, MB, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_RLDICL => (ALU, OP_RLDICL, RS, NONE, NONE, RA, SH, MB, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_RLDICR => (ALU, OP_RLDICR, RS, NONE, NONE, RA, SH, ME, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_RLDIMI => (ALU, OP_RLDIMI, RA, RS, NONE, RA, SH, MB, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_RLWIMI => (ALU, OP_RLWIMI, RA, RS, NONE, RA, SH32, MB32, ME32, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_RLWINM => (ALU, OP_RLWINM, RS, NONE, NONE, RA, SH32, MB32, ME32, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_RLWNM => (ALU, OP_RLWNM, RS, RB, NONE, RA, NONE, MB32, ME32, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
--PPC_SETB
PPC_SLD => (ALU, OP_SLD, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SLW => (ALU, OP_SLW, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SRAD => (ALU, OP_SRAD, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SRADI => (ALU, OP_SRADI, RS, NONE, NONE, RA, SH, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SRAW => (ALU, OP_SRAW, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SRAWI => (ALU, OP_SRAWI, RS, NONE, NONE, RA, SH, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SRD => (ALU, OP_SRD, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SRW => (ALU, OP_SRW, RS, RB, RS, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_STB => (LDST, OP_STORE, RA_OR_ZERO, CONST_SI, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_STBCX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '0', '1', '0', '0', RC, '0'),
PPC_STBU => (LDST, OP_STORE, RA, CONST_SI, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '1', '0', '0', '0', RC, '0'),
PPC_STBUX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '1', '0', '0', '0', RC, '0'),
PPC_STBX => (LDST, OP_STORE, RA_OR_ZERO, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is1B, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_STD => (LDST, OP_STORE, RA_OR_ZERO, CONST_DS, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_STDBRX => (LDST, OP_STORE, RA_OR_ZERO, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '1', '0', '0', '0', '0', '0', NONE, '0'),
PPC_STDCX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '0', '1', '0', '0', NONE, '0'),
PPC_STDU => (LDST, OP_STORE, RA, CONST_DS, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_STDUX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_STDX => (LDST, OP_STORE, RA_OR_ZERO, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is8B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_STH => (LDST, OP_STORE, RA, CONST_SI, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_STHBRX => (LDST, OP_STORE, RA_OR_ZERO, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '1', '0', '0', '0', '0', '0', NONE, '0'),
PPC_STHCX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '0', '1', '0', '0', NONE, '0'),
PPC_STHU => (LDST, OP_STORE, RA, CONST_SI, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_STHUX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_STHX => (LDST, OP_STORE, RA_OR_ZERO, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is2B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_STW => (LDST, OP_STORE, RA_OR_ZERO, CONST_SI, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_STWBRX => (LDST, OP_STORE, RA_OR_ZERO, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '1', '0', '0', '0', '0', '0', NONE, '0'),
PPC_STWCX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '0', '1', '0', '0', NONE, '0'),
PPC_STWU => (LDST, OP_STORE, RA, CONST_SI, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_STWUX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '1', '0', '0', '0', NONE, '0'),
PPC_STWX => (LDST, OP_STORE, RA_OR_ZERO, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_SUBF => (ALU, OP_SUBF, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SUBFC => (ALU, OP_SUBFC, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SUBFE => (ALU, OP_SUBFC, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SUBFIC => (ALU, OP_SUBFC, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_SUBFME
PPC_SUBFZE => (ALU, OP_SUBFC, RA, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_SYNC => (ALU, OP_NOP, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_TD
PPC_TDI => (ALU, OP_TDI, RA, CONST_SI, NONE, NONE, TOO, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
--PPC_TW
--PPC_TWI
PPC_XOR => (ALU, OP_XOR, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0'),
PPC_XORI => (ALU, OP_XOR, RS, CONST_UI, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_XORIS => (ALU, OP_XOR, RS, CONST_UI_HI, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_SIM_READ => (ALU, OP_SIM_READ, NONE, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_SIM_POLL => (ALU, OP_SIM_POLL, NONE, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_SIM_WRITE => (ALU, OP_SIM_WRITE, RS, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
PPC_SIM_CONFIG => (ALU, OP_SIM_CONFIG,NONE, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0'),
others => decode_rom_init
);
begin
decode1_0: process(clk)
begin
if rising_edge(clk) then
f <= f_in;
end if;
end process;
decode1_1: process(all)
variable ppc_insn: ppc_insn_t;
begin
d_out <= Decode1ToDecode2Init;
ppc_insn := PPC_ILLEGAL;
d_out.valid <= f.valid;
if f.valid then
d_out.nia <= f.nia;
d_out.insn <= f.insn;
report "Decode insn " & to_hstring(f.insn);
if std_match(f.insn, "011111---------------0100001010-") then
report "PPC_add";
ppc_insn := PPC_ADD;
elsif std_match(f.insn, "011111---------------0000001010-") then
report "PPC_addc";
ppc_insn := PPC_ADDC;
elsif std_match(f.insn, "011111---------------0010001010-") then
report "PPC_adde";
ppc_insn := PPC_ADDE;
elsif std_match(f.insn, "011111---------------0010101010-") then
report "PPC_addex";
ppc_insn := PPC_ADDEX;
elsif std_match(f.insn, "001110--------------------------") then
report "PPC_addi";
ppc_insn := PPC_ADDI;
elsif std_match(f.insn, "001100--------------------------") then
report "PPC_addic";
ppc_insn := PPC_ADDIC;
elsif std_match(f.insn, "001101--------------------------") then
report "PPC_addic.";
ppc_insn := PPC_ADDIC_RC;
elsif std_match(f.insn, "001111--------------------------") then
report "PPC_addis";
ppc_insn := PPC_ADDIS;
elsif std_match(f.insn, "011111---------------0011101010-") then
report "PPC_addme";
ppc_insn := PPC_ADDME;
elsif std_match(f.insn, "010011--------------------00010-") then
report "PPC_addpcis";
ppc_insn := PPC_ADDPCIS;
elsif std_match(f.insn, "011111---------------0011001010-") then
report "PPC_addze";
ppc_insn := PPC_ADDZE;
elsif std_match(f.insn, "011111---------------0000011100-") then
report "PPC_and";
ppc_insn := PPC_AND;
elsif std_match(f.insn, "011111---------------0000111100-") then
report "PPC_andc";
ppc_insn := PPC_ANDC;
elsif std_match(f.insn, "011100--------------------------") then
report "PPC_andi.";
ppc_insn := PPC_ANDI_RC;
elsif std_match(f.insn, "011101--------------------------") then
report "PPC_andis.";
ppc_insn := PPC_ANDIS_RC;
elsif std_match(f.insn, "000000---------------0100000000-") then
report "PPC_attn";
ppc_insn := PPC_ATTN;
elsif std_match(f.insn, "010010------------------------0-") then
report "PPC_b";
ppc_insn := PPC_B;
elsif std_match(f.insn, "010010------------------------1-") then
report "PPC_ba";
ppc_insn := PPC_BA;
elsif std_match(f.insn, "010000------------------------0-") then
report "PPC_bc";
ppc_insn := PPC_BC;
elsif std_match(f.insn, "010000------------------------10") then
report "PPC_bca";
ppc_insn := PPC_BCA;
elsif std_match(f.insn, "010011---------------1000010000-") then
report "PPC_bcctr";
ppc_insn := PPC_BCCTR;
elsif std_match(f.insn, "010000------------------------11") then
report "PPC_bcla";
ppc_insn := PPC_BCLA;
elsif std_match(f.insn, "010011---------------0000010000-") then
report "PPC_bclr";
ppc_insn := PPC_BCLR;
elsif std_match(f.insn, "010011---------------1000110000-") then
report "PPC_bctar";
ppc_insn := PPC_BCTAR;
elsif std_match(f.insn, "011111---------------0011111100-") then
report "PPC_bperm";
ppc_insn := PPC_BPERM;
elsif std_match(f.insn, "011111---------------0000000000-") then
report "PPC_cmp";
ppc_insn := PPC_CMP;
elsif std_match(f.insn, "011111---------------0111111100-") then
report "PPC_cmpb";
ppc_insn := PPC_CMPB;
elsif std_match(f.insn, "011111---------------0011100000-") then
report "PPC_cmpeqb";
ppc_insn := PPC_CMPEQB;
elsif std_match(f.insn, "001011--------------------------") then
report "PPC_cmpi";
ppc_insn := PPC_CMPI;
elsif std_match(f.insn, "011111---------------0000100000-") then
report "PPC_cmpl";
ppc_insn := PPC_CMPL;
elsif std_match(f.insn, "001010--------------------------") then
report "PPC_cmpli";
ppc_insn := PPC_CMPLI;
elsif std_match(f.insn, "011111---------------0011000000-") then
report "PPC_cmprb";
ppc_insn := PPC_CMPRB;
elsif std_match(f.insn, "011111---------------0000111010-") then
report "PPC_cntlzd";
ppc_insn := PPC_CNTLZD;
elsif std_match(f.insn, "011111---------------0000011010-") then
report "PPC_cntlzw";
ppc_insn := PPC_CNTLZW;
elsif std_match(f.insn, "011111---------------1000111010-") then
report "PPC_cnttzd";
ppc_insn := PPC_CNTTZD;
elsif std_match(f.insn, "011111---------------1000011010-") then
report "PPC_cnttzw";
ppc_insn := PPC_CNTTZW;
elsif std_match(f.insn, "010011---------------0100000001-") then
report "PPC_crand";
ppc_insn := PPC_CRAND;
elsif std_match(f.insn, "010011---------------0010000001-") then
report "PPC_crandc";
ppc_insn := PPC_CRANDC;
elsif std_match(f.insn, "010011---------------0100100001-") then
report "PPC_creqv";
ppc_insn := PPC_CREQV;
elsif std_match(f.insn, "010011---------------0011100001-") then
report "PPC_crnand";
ppc_insn := PPC_CRNAND;
elsif std_match(f.insn, "010011---------------0000100001-") then
report "PPC_crnor";
ppc_insn := PPC_CRNOR;
elsif std_match(f.insn, "010011---------------0111000001-") then
report "PPC_cror";
ppc_insn := PPC_CROR;
elsif std_match(f.insn, "010011---------------0110100001-") then
report "PPC_crorc";
ppc_insn := PPC_CRORC;
elsif std_match(f.insn, "010011---------------0011000001-") then
report "PPC_crxor";
ppc_insn := PPC_CRXOR;
elsif std_match(f.insn, "011111---------------1011110011-") then
report "PPC_darn";
ppc_insn := PPC_DARN;
elsif std_match(f.insn, "011111---------------0001010110-") then
report "PPC_dcbf";
ppc_insn := PPC_DCBF;
elsif std_match(f.insn, "011111---------------0000110110-") then
report "PPC_dcbst";
ppc_insn := PPC_DCBST;
elsif std_match(f.insn, "011111---------------0100010110-") then
report "PPC_dcbt";
ppc_insn := PPC_DCBT;
elsif std_match(f.insn, "011111---------------0011110110-") then
report "PPC_dcbtst";
ppc_insn := PPC_DCBTST;
elsif std_match(f.insn, "011111---------------1111110110-") then
report "PPC_dcbz";
ppc_insn := PPC_DCBZ;
elsif std_match(f.insn, "011111---------------0111101001-") then
report "PPC_divd";
ppc_insn := PPC_DIVD;
elsif std_match(f.insn, "011111---------------0110101001-") then
report "PPC_divde";
ppc_insn := PPC_DIVDE;
elsif std_match(f.insn, "011111---------------0110001001-") then
report "PPC_divdeu";
ppc_insn := PPC_DIVDEU;
elsif std_match(f.insn, "011111---------------0111001001-") then
report "PPC_divdu";
ppc_insn := PPC_DIVDU;
elsif std_match(f.insn, "011111---------------0111101011-") then
report "PPC_divw";
ppc_insn := PPC_DIVW;
elsif std_match(f.insn, "011111---------------0110101011-") then
report "PPC_divwe";
ppc_insn := PPC_DIVWE;
elsif std_match(f.insn, "011111---------------0110001011-") then
report "PPC_divweu";
ppc_insn := PPC_DIVWEU;
elsif std_match(f.insn, "011111---------------0111001011-") then
report "PPC_divwu";
ppc_insn := PPC_DIVWU;
elsif std_match(f.insn, "011111---------------0100011100-") then
report "PPC_eqv";
ppc_insn := PPC_EQV;
elsif std_match(f.insn, "011111---------------1110111010-") then
report "PPC_extsb";
ppc_insn := PPC_EXTSB;
elsif std_match(f.insn, "011111---------------1110011010-") then
report "PPC_extsh";
ppc_insn := PPC_EXTSH;
elsif std_match(f.insn, "011111---------------1111011010-") then
report "PPC_extsw";
ppc_insn := PPC_EXTSW;
elsif std_match(f.insn, "011111---------------110111101--") then
report "PPC_extswsli";
ppc_insn := PPC_EXTSWSLI;
elsif std_match(f.insn, "011111---------------1111010110-") then
report "PPC_icbi";
ppc_insn := PPC_ICBI;
elsif std_match(f.insn, "011111---------------0000010110-") then
report "PPC_icbt";
ppc_insn := PPC_ICBT;
elsif std_match(f.insn, "011111--------------------01111-") then
report "PPC_isel";
ppc_insn := PPC_ISEL;
elsif std_match(f.insn, "010011---------------0010010110-") then
report "PPC_isync";
ppc_insn := PPC_ISYNC;
elsif std_match(f.insn, "011111---------------0000110100-") then
report "PPC_lbarx";
ppc_insn := PPC_LBARX;
elsif std_match(f.insn, "100010--------------------------") then
report "PPC_lbz";
ppc_insn := PPC_LBZ;
elsif std_match(f.insn, "100011--------------------------") then
report "PPC_lbzu";
ppc_insn := PPC_LBZU;
elsif std_match(f.insn, "011111---------------0001110111-") then
report "PPC_lbzux";
ppc_insn := PPC_LBZUX;
elsif std_match(f.insn, "011111---------------0001010111-") then
report "PPC_lbzx";
ppc_insn := PPC_LBZX;
elsif std_match(f.insn, "111010------------------------00") then
report "PPC_ld";
ppc_insn := PPC_LD;
elsif std_match(f.insn, "011111---------------0001010100-") then
report "PPC_ldarx";
ppc_insn := PPC_LDARX;
elsif std_match(f.insn, "011111---------------1000010100-") then
report "PPC_ldbrx";
ppc_insn := PPC_LDBRX;
elsif std_match(f.insn, "111010------------------------01") then
report "PPC_ldu";
ppc_insn := PPC_LDU;
elsif std_match(f.insn, "011111---------------0000110101-") then
report "PPC_ldux";
ppc_insn := PPC_LDUX;
elsif std_match(f.insn, "011111---------------0000010101-") then
report "PPC_ldx";
ppc_insn := PPC_LDX;
elsif std_match(f.insn, "101010--------------------------") then
report "PPC_lha";
ppc_insn := PPC_LHA;
elsif std_match(f.insn, "011111---------------0001110100-") then
report "PPC_lharx";
ppc_insn := PPC_LHARX;
elsif std_match(f.insn, "101011--------------------------") then
report "PPC_lhau";
ppc_insn := PPC_LHAU;
elsif std_match(f.insn, "011111---------------0101110111-") then
report "PPC_lhaux";
ppc_insn := PPC_LHAUX;
elsif std_match(f.insn, "011111---------------0101010111-") then
report "PPC_lhax";
ppc_insn := PPC_LHAX;
elsif std_match(f.insn, "011111---------------1100010110-") then
report "PPC_lhbrx";
ppc_insn := PPC_LHBRX;
elsif std_match(f.insn, "101000--------------------------") then
report "PPC_lhz";
ppc_insn := PPC_LHZ;
elsif std_match(f.insn, "101001--------------------------") then
report "PPC_lhzu";
ppc_insn := PPC_LHZU;
elsif std_match(f.insn, "011111---------------0100110111-") then
report "PPC_lhzux";
ppc_insn := PPC_LHZUX;
elsif std_match(f.insn, "011111---------------0100010111-") then
report "PPC_lhzx";
ppc_insn := PPC_LHZX;
elsif std_match(f.insn, "111010------------------------10") then
report "PPC_lwa";
ppc_insn := PPC_LWA;
elsif std_match(f.insn, "011111---------------0000010100-") then
report "PPC_lwarx";
ppc_insn := PPC_LWARX;
elsif std_match(f.insn, "011111---------------0101110101-") then
report "PPC_lwaux";
ppc_insn := PPC_LWAUX;
elsif std_match(f.insn, "011111---------------0101010101-") then
report "PPC_lwax";
ppc_insn := PPC_LWAX;
elsif std_match(f.insn, "011111---------------1000010110-") then
report "PPC_lwbrx";
ppc_insn := PPC_LWBRX;
elsif std_match(f.insn, "100000--------------------------") then
report "PPC_lwz";
ppc_insn := PPC_LWZ;
elsif std_match(f.insn, "100001--------------------------") then
report "PPC_lwzu";
ppc_insn := PPC_LWZU;
elsif std_match(f.insn, "011111---------------0000110111-") then
report "PPC_lwzux";
ppc_insn := PPC_LWZUX;
elsif std_match(f.insn, "011111---------------0000010111-") then
report "PPC_lwzx";
ppc_insn := PPC_LWZX;
elsif std_match(f.insn, "000100--------------------110000") then
report "PPC_maddhd";
ppc_insn := PPC_MADDHD;
elsif std_match(f.insn, "000100--------------------110001") then
report "PPC_maddhdu";
ppc_insn := PPC_MADDHDU;
elsif std_match(f.insn, "000100--------------------110011") then
report "PPC_maddld";
ppc_insn := PPC_MADDLD;
elsif std_match(f.insn, "010011---------------0000000000-") then
report "PPC_mcrf";
ppc_insn := PPC_MCRF;
elsif std_match(f.insn, "011111---------------1000000000-") then
report "PPC_mcrxr";
ppc_insn := PPC_MCRXR;
elsif std_match(f.insn, "011111---------------1001000000-") then
report "PPC_mcrxrx";
ppc_insn := PPC_MCRXRX;
elsif std_match(f.insn, "011111-----0---------0000010011-") then
report "PPC_mfcr";
ppc_insn := PPC_MFCR;
elsif std_match(f.insn, "011111-----1---------0000010011-") then
report "PPC_mfocrf";
ppc_insn := PPC_MFOCRF;
-- Specific MF/MT SPR encodings first
elsif std_match(f.insn, "011111-----01001000000101010011-") then
report "PPC_mfctr";
ppc_insn := PPC_MFCTR;
elsif std_match(f.insn, "011111-----01000000000101010011-") then
report "PPC_mflr";
ppc_insn := PPC_MFLR;
elsif std_match(f.insn, "011111-----01100010000101010011-") then
report "PPC_mftb";
ppc_insn := PPC_MFTB;
elsif std_match(f.insn, "011111-----01001000000111010011-") then
report "PPC_mtctr";
ppc_insn := PPC_MTCTR;
elsif std_match(f.insn, "011111-----01000000000111010011-") then
report "PPC_mtlr";
ppc_insn := PPC_MTLR;
elsif std_match(f.insn, "011111---------------0101010011-") then
report "PPC_mfspr";
ppc_insn := PPC_MFSPR;
elsif std_match(f.insn, "011111---------------1100001001-") then
report "PPC_modsd";
ppc_insn := PPC_MODSD;
elsif std_match(f.insn, "011111---------------1100001011-") then
report "PPC_modsw";
ppc_insn := PPC_MODSW;
elsif std_match(f.insn, "011111---------------0100001001-") then
report "PPC_modud";
ppc_insn := PPC_MODUD;
elsif std_match(f.insn, "011111---------------0100001011-") then
report "PPC_moduw";
ppc_insn := PPC_MODUW;
elsif std_match(f.insn, "011111-----0---------0010010000-") then
report "PPC_mtcrf";
ppc_insn := PPC_MTCRF;
elsif std_match(f.insn, "011111-----1---------0010010000-") then
report "PPC_mtocrf";
ppc_insn := PPC_MTOCRF;
elsif std_match(f.insn, "011111---------------0111010011-") then
report "PPC_mtspr";
ppc_insn := PPC_MTSPR;
elsif std_match(f.insn, "011111----------------001001001-") then
report "PPC_mulhd";
ppc_insn := PPC_MULHD;
elsif std_match(f.insn, "011111----------------000001001-") then
report "PPC_mulhdu";
ppc_insn := PPC_MULHDU;
elsif std_match(f.insn, "011111----------------001001011-") then
report "PPC_mulhw";
ppc_insn := PPC_MULHW;
elsif std_match(f.insn, "011111----------------000001011-") then
report "PPC_mulhwu";
ppc_insn := PPC_MULHWU;
elsif std_match(f.insn, "011111---------------0011101001-") then
report "PPC_mulld";
ppc_insn := PPC_MULLD;
elsif std_match(f.insn, "000111--------------------------") then
report "PPC_mulli";
ppc_insn := PPC_MULLI;
elsif std_match(f.insn, "011111---------------0011101011-") then
report "PPC_mullw";
ppc_insn := PPC_MULLW;
elsif std_match(f.insn, "011111---------------0111011100-") then
report "PPC_nand";
ppc_insn := PPC_NAND;
elsif std_match(f.insn, "011111---------------0001101000-") then
report "PPC_neg";
ppc_insn := PPC_NEG;
elsif std_match(f.insn, "011111---------------0001111100-") then
report "PPC_nor";
ppc_insn := PPC_NOR;
elsif std_match(f.insn, "011111---------------0110111100-") then
report "PPC_or";
ppc_insn := PPC_OR;
elsif std_match(f.insn, "011111---------------0110011100-") then
report "PPC_orc";
ppc_insn := PPC_ORC;
elsif std_match(f.insn, "011000--------------------------") then
report "PPC_ori";
ppc_insn := PPC_ORI;
elsif std_match(f.insn, "011001--------------------------") then
report "PPC_oris";
ppc_insn := PPC_ORIS;
elsif std_match(f.insn, "011111---------------0001111010-") then
report "PPC_popcntb";
ppc_insn := PPC_POPCNTB;
elsif std_match(f.insn, "011111---------------0111111010-") then
report "PPC_popcntd";
ppc_insn := PPC_POPCNTD;
elsif std_match(f.insn, "011111---------------0101111010-") then
report "PPC_popcntw";
ppc_insn := PPC_POPCNTW;
elsif std_match(f.insn, "011111---------------0010111010-") then
report "PPC_prtyd";
ppc_insn := PPC_PRTYD;
elsif std_match(f.insn, "011111---------------0010011010-") then
report "PPC_prtyw";
ppc_insn := PPC_PRTYW;
elsif std_match(f.insn, "011110---------------------1000-") then
report "PPC_rldcl";
ppc_insn := PPC_RLDCL;
elsif std_match(f.insn, "011110---------------------1001-") then
report "PPC_rldcr";
ppc_insn := PPC_RLDCR;
elsif std_match(f.insn, "011110---------------------010--") then
report "PPC_rldic";
ppc_insn := PPC_RLDIC;
elsif std_match(f.insn, "011110---------------------000--") then
report "PPC_rldicl";
ppc_insn := PPC_RLDICL;
elsif std_match(f.insn, "011110---------------------001--") then
report "PPC_rldicr";
ppc_insn := PPC_RLDICR;
elsif std_match(f.insn, "011110---------------------011--") then
report "PPC_rldimi";
ppc_insn := PPC_RLDIMI;
elsif std_match(f.insn, "010100--------------------------") then
report "PPC_rlwimi";
ppc_insn := PPC_RLWIMI;
elsif std_match(f.insn, "010101--------------------------") then
report "PPC_rlwinm";
ppc_insn := PPC_RLWINM;
elsif std_match(f.insn, "010111--------------------------") then
report "PPC_rlwnm";
ppc_insn := PPC_RLWNM;
elsif std_match(f.insn, "011111---------------0010000000-") then
report "PPC_setb";
ppc_insn := PPC_SETB;
elsif std_match(f.insn, "011111---------------0000011011-") then
report "PPC_sld";
ppc_insn := PPC_SLD;
elsif std_match(f.insn, "011111---------------0000011000-") then
report "PPC_slw";
ppc_insn := PPC_SLW;
elsif std_match(f.insn, "011111---------------1100011010-") then
report "PPC_srad";
ppc_insn := PPC_SRAD;
elsif std_match(f.insn, "011111---------------110011101--") then
report "PPC_sradi";
ppc_insn := PPC_SRADI;
elsif std_match(f.insn, "011111---------------1100011000-") then
report "PPC_sraw";
ppc_insn := PPC_SRAW;
elsif std_match(f.insn, "011111---------------1100111000-") then
report "PPC_srawi";
ppc_insn := PPC_SRAWI;
elsif std_match(f.insn, "011111---------------1000011011-") then
report "PPC_srd";
ppc_insn := PPC_SRD;
elsif std_match(f.insn, "011111---------------1000011000-") then
report "PPC_srw";
ppc_insn := PPC_SRW;
elsif std_match(f.insn, "100110--------------------------") then
report "PPC_stb";
ppc_insn := PPC_STB;
elsif std_match(f.insn, "011111---------------1010110110-") then
report "PPC_stbcx";
ppc_insn := PPC_STBCX;
elsif std_match(f.insn, "100111--------------------------") then
report "PPC_stbu";
ppc_insn := PPC_STBU;
elsif std_match(f.insn, "011111---------------0011110111-") then
report "PPC_stbux";
ppc_insn := PPC_STBUX;
elsif std_match(f.insn, "011111---------------0011010111-") then
report "PPC_stbx";
ppc_insn := PPC_STBX;
elsif std_match(f.insn, "111110------------------------00") then
report "PPC_std";
ppc_insn := PPC_STD;
elsif std_match(f.insn, "011111---------------1010010100-") then
report "PPC_stdbrx";
ppc_insn := PPC_STDBRX;
elsif std_match(f.insn, "011111---------------0011010110-") then
report "PPC_stdcx";
ppc_insn := PPC_STDCX;
elsif std_match(f.insn, "111110------------------------01") then
report "PPC_stdu";
ppc_insn := PPC_STDU;
elsif std_match(f.insn, "011111---------------0010110101-") then
report "PPC_stdux";
ppc_insn := PPC_STDUX;
elsif std_match(f.insn, "011111---------------0010010101-") then
report "PPC_stdx";
ppc_insn := PPC_STDX;
elsif std_match(f.insn, "101100--------------------------") then
report "PPC_sth";
ppc_insn := PPC_STH;
elsif std_match(f.insn, "011111---------------1110010110-") then
report "PPC_sthbrx";
ppc_insn := PPC_STHBRX;
elsif std_match(f.insn, "011111---------------1011010110-") then
report "PPC_sthcx";
ppc_insn := PPC_STHCX;
elsif std_match(f.insn, "101101--------------------------") then
report "PPC_sthu";
ppc_insn := PPC_STHU;
elsif std_match(f.insn, "011111---------------0110110111-") then
report "PPC_sthux";
ppc_insn := PPC_STHUX;
elsif std_match(f.insn, "011111---------------0110010111-") then
report "PPC_sthx";
ppc_insn := PPC_STHX;
elsif std_match(f.insn, "100100--------------------------") then
report "PPC_stw";
ppc_insn := PPC_STW;
elsif std_match(f.insn, "011111---------------1010010110-") then
report "PPC_stwbrx";
ppc_insn := PPC_STWBRX;
elsif std_match(f.insn, "011111---------------0010010110-") then
report "PPC_stwcx";
ppc_insn := PPC_STWCX;
elsif std_match(f.insn, "100101--------------------------") then
report "PPC_stwu";
ppc_insn := PPC_STWU;
elsif std_match(f.insn, "011111---------------0010110111-") then
report "PPC_stwux";
ppc_insn := PPC_STWUX;
elsif std_match(f.insn, "011111---------------0010010111-") then
report "PPC_stwx";
ppc_insn := PPC_STWX;
elsif std_match(f.insn, "011111---------------0000101000-") then
report "PPC_subf";
ppc_insn := PPC_SUBF;
elsif std_match(f.insn, "011111---------------0000001000-") then
report "PPC_subfc";
ppc_insn := PPC_SUBFC;
elsif std_match(f.insn, "011111---------------0010001000-") then
report "PPC_subfe";
ppc_insn := PPC_SUBFE;
elsif std_match(f.insn, "001000--------------------------") then
report "PPC_subfic";
ppc_insn := PPC_SUBFIC;
elsif std_match(f.insn, "011111---------------0011101000-") then
report "PPC_subfme";
ppc_insn := PPC_SUBFME;
elsif std_match(f.insn, "011111---------------0011001000-") then
report "PPC_subfze";
ppc_insn := PPC_SUBFZE;
elsif std_match(f.insn, "011111---------------1001010110-") then
report "PPC_sync";
ppc_insn := PPC_SYNC;
elsif std_match(f.insn, "011111---------------0001000100-") then
report "PPC_td";
ppc_insn := PPC_TD;
elsif std_match(f.insn, "000010--------------------------") then
report "PPC_tdi";
ppc_insn := PPC_TDI;
elsif std_match(f.insn, "011111---------------0000000100-") then
report "PPC_tw";
ppc_insn := PPC_TW;
elsif std_match(f.insn, "000011--------------------------") then
report "PPC_twi";
ppc_insn := PPC_TWI;
elsif std_match(f.insn, "011111---------------0100111100-") then
report "PPC_xor";
ppc_insn := PPC_XOR;
elsif std_match(f.insn, "011010--------------------------") then
report "PPC_xori";
ppc_insn := PPC_XORI;
elsif std_match(f.insn, "011011--------------------------") then
report "PPC_xoris";
ppc_insn := PPC_XORIS;
elsif std_match(f.insn, "000001---------------0000000000-") then
report "PPC_SIM_READ";
ppc_insn := PPC_SIM_READ;
elsif std_match(f.insn, "000001---------------0000000001-") then
report "PPC_SIM_POLL";
ppc_insn := PPC_SIM_POLL;
elsif std_match(f.insn, "000001---------------0000000010-") then
report "PPC_SIM_WRITE";
ppc_insn := PPC_SIM_WRITE;
elsif std_match(f.insn, "000001---------------0000000011-") then
report "PPC_SIM_CONFIG";
ppc_insn := PPC_SIM_CONFIG;
else
report "PPC_illegal";
ppc_insn := PPC_ILLEGAL;
end if;
d_out.decode <= decode_rom_array(ppc_insn);
end if;
end process;
end architecture behaviour;
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