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decode: Reformat decode_types.vhdl

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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
pull/118/head
Benjamin Herrenschmidt 5 years ago
parent d2762e70e5
commit 797b1bb045
1 changed files with 87 additions and 86 deletions
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173
decode_types.vhdl
Unescape Escape View File

@ -2,92 +2,93 @@ library ieee;
use ieee.std_logic_1164.all; use ieee.std_logic_1164.all;


package decode_types is package decode_types is
type insn_type_t is (OP_ILLEGAL, OP_NOP, OP_ADD, type insn_type_t is (OP_ILLEGAL, OP_NOP, OP_ADD,
OP_ADDPCIS, OP_AND, OP_ATTN, OP_B, OP_BC, OP_BCREG, OP_ADDPCIS, OP_AND, OP_ATTN, OP_B, OP_BC, OP_BCREG,
OP_BPERM, OP_CMP, OP_CMPB, OP_CMPEQB, OP_CMPL, OP_CMPRB, OP_BPERM, OP_CMP, OP_CMPB, OP_CMPEQB, OP_CMPL, OP_CMPRB,
OP_CNTZ, OP_CRAND, OP_CNTZ, OP_CRAND,
OP_CRANDC, OP_CREQV, OP_CRNAND, OP_CRNOR, OP_CROR, OP_CRORC, OP_CRANDC, OP_CREQV, OP_CRNAND, OP_CRNOR, OP_CROR, OP_CRORC,
OP_CRXOR, OP_DARN, OP_DCBF, OP_DCBST, OP_DCBT, OP_DCBTST, OP_CRXOR, OP_DARN, OP_DCBF, OP_DCBST, OP_DCBT, OP_DCBTST,
OP_DCBZ, OP_DIV, OP_EXTS, OP_DCBZ, OP_DIV, OP_EXTS,
OP_EXTSWSLI, OP_ICBI, OP_ICBT, OP_ISEL, OP_ISYNC, OP_EXTSWSLI, OP_ICBI, OP_ICBT, OP_ISEL, OP_ISYNC,
OP_LOAD, OP_STORE, OP_MADDHD, OP_MADDHDU, OP_MADDLD, OP_MCRF, OP_LOAD, OP_STORE, OP_MADDHD, OP_MADDHDU, OP_MADDLD, OP_MCRF,
OP_MCRXR, OP_MCRXRX, OP_MFCR, OP_MFSPR, OP_MOD, OP_MCRXR, OP_MCRXRX, OP_MFCR, OP_MFSPR, OP_MOD,
OP_MTCRF, OP_MTSPR, OP_MUL_L64, OP_MTCRF, OP_MTSPR, OP_MUL_L64,
OP_MUL_H64, OP_MUL_H32, OP_OR, OP_MUL_H64, OP_MUL_H32, OP_OR,
OP_POPCNTB, OP_POPCNTD, OP_POPCNTW, OP_PRTYD, OP_POPCNTB, OP_POPCNTD, OP_POPCNTW, OP_PRTYD,
OP_PRTYW, OP_RLC, OP_RLCL, OP_RLCR, OP_SETB, OP_PRTYW, OP_RLC, OP_RLCL, OP_RLCR, OP_SETB,
OP_SHL, OP_SHR, OP_SHL, OP_SHR,
OP_SYNC, OP_TD, OP_TDI, OP_TW, OP_SYNC, OP_TD, OP_TDI, OP_TW,
OP_TWI, OP_XOR, OP_SIM_CONFIG); OP_TWI, OP_XOR, OP_SIM_CONFIG

);
type input_reg_a_t is (NONE, RA, RA_OR_ZERO);
type input_reg_b_t is (NONE, RB, CONST_UI, CONST_SI, CONST_SI_HI, CONST_UI_HI, CONST_LI, CONST_BD, CONST_DS, CONST_M1, CONST_SH, CONST_SH32); type input_reg_a_t is (NONE, RA, RA_OR_ZERO);
type input_reg_c_t is (NONE, RS); type input_reg_b_t is (NONE, RB, CONST_UI, CONST_SI, CONST_SI_HI, CONST_UI_HI, CONST_LI, CONST_BD, CONST_DS, CONST_M1, CONST_SH, CONST_SH32);
type output_reg_a_t is (NONE, RT, RA); type input_reg_c_t is (NONE, RS);
type rc_t is (NONE, ONE, RC); type output_reg_a_t is (NONE, RT, RA);
type carry_in_t is (ZERO, CA, ONE); type rc_t is (NONE, ONE, RC);

type carry_in_t is (ZERO, CA, ONE);
constant SH_OFFSET : integer := 0;
constant MB_OFFSET : integer := 1; constant SH_OFFSET : integer := 0;
constant ME_OFFSET : integer := 1; constant MB_OFFSET : integer := 1;
constant SH32_OFFSET : integer := 0; constant ME_OFFSET : integer := 1;
constant MB32_OFFSET : integer := 1; constant SH32_OFFSET : integer := 0;
constant ME32_OFFSET : integer := 2; constant MB32_OFFSET : integer := 1;

constant ME32_OFFSET : integer := 2;
constant FXM_OFFSET : integer := 0;

constant FXM_OFFSET : integer := 0;
constant BO_OFFSET : integer := 0;
constant BI_OFFSET : integer := 1; constant BO_OFFSET : integer := 0;
constant BH_OFFSET : integer := 2; constant BI_OFFSET : integer := 1;

constant BH_OFFSET : integer := 2;
constant BF_OFFSET : integer := 0;
constant L_OFFSET : integer := 1; constant BF_OFFSET : integer := 0;

constant L_OFFSET : integer := 1;
constant TOO_OFFSET : integer := 0;

constant TOO_OFFSET : integer := 0;
type unit_t is (NONE, ALU, LDST, MUL, DIV);
type length_t is (NONE, is1B, is2B, is4B, is8B); type unit_t is (NONE, ALU, LDST, MUL, DIV);

type length_t is (NONE, is1B, is2B, is4B, is8B);
type decode_rom_t is record
unit : unit_t; type decode_rom_t is record
insn_type : insn_type_t; unit : unit_t;
input_reg_a : input_reg_a_t; insn_type : insn_type_t;
input_reg_b : input_reg_b_t; input_reg_a : input_reg_a_t;
input_reg_c : input_reg_c_t; input_reg_b : input_reg_b_t;
output_reg_a : output_reg_a_t; input_reg_c : input_reg_c_t;

output_reg_a : output_reg_a_t;
input_cr : std_ulogic;
output_cr : std_ulogic; input_cr : std_ulogic;

output_cr : std_ulogic;
invert_a : std_ulogic;
invert_out : std_ulogic; invert_a : std_ulogic;
input_carry : carry_in_t; invert_out : std_ulogic;
output_carry : std_ulogic; input_carry : carry_in_t;

output_carry : std_ulogic;
-- load/store signals
length : length_t; -- load/store signals
byte_reverse : std_ulogic; length : length_t;
sign_extend : std_ulogic; byte_reverse : std_ulogic;
update : std_ulogic; sign_extend : std_ulogic;
reserve : std_ulogic; update : std_ulogic;

reserve : std_ulogic;
-- multiplier and ALU signals
is_32bit : std_ulogic; -- multiplier and ALU signals
is_signed : std_ulogic; is_32bit : std_ulogic;

is_signed : std_ulogic;
rc : rc_t;
lr : std_ulogic; rc : rc_t;

lr : std_ulogic;
sgl_pipe : std_ulogic;
end record; sgl_pipe : std_ulogic;
constant decode_rom_init : decode_rom_t := (unit => NONE, end record;
insn_type => OP_ILLEGAL, input_reg_a => NONE, constant decode_rom_init : decode_rom_t := (unit => NONE,
input_reg_b => NONE, input_reg_c => NONE, insn_type => OP_ILLEGAL, input_reg_a => NONE,
output_reg_a => NONE, input_cr => '0', output_cr => '0', input_reg_b => NONE, input_reg_c => NONE,
invert_a => '0', invert_out => '0', input_carry => ZERO, output_carry => '0', output_reg_a => NONE, input_cr => '0', output_cr => '0',
length => NONE, byte_reverse => '0', sign_extend => '0', invert_a => '0', invert_out => '0', input_carry => ZERO, output_carry => '0',
update => '0', reserve => '0', is_32bit => '0', length => NONE, byte_reverse => '0', sign_extend => '0',
is_signed => '0', rc => NONE, lr => '0', sgl_pipe => '0'); update => '0', reserve => '0', is_32bit => '0',
is_signed => '0', rc => NONE, lr => '0', sgl_pipe => '0');


end decode_types; end decode_types;



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