library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all; library work; use work.utils.all; use work.decode_types.all; package common is -- Processor Version Number constant PVR_MICROWATT : std_ulogic_vector(31 downto 0) := x"00630000"; -- MSR bit numbers constant MSR_SF : integer := (63 - 0); -- Sixty-Four bit mode constant MSR_EE : integer := (63 - 48); -- External interrupt Enable constant MSR_PR : integer := (63 - 49); -- PRoblem state constant MSR_FP : integer := (63 - 50); -- Floating Point available constant MSR_FE0 : integer := (63 - 52); -- Floating Exception mode constant MSR_SE : integer := (63 - 53); -- Single-step bit of TE field constant MSR_BE : integer := (63 - 54); -- Branch trace bit of TE field constant MSR_FE1 : integer := (63 - 55); -- Floating Exception mode constant MSR_IR : integer := (63 - 58); -- Instruction Relocation constant MSR_DR : integer := (63 - 59); -- Data Relocation constant MSR_PMM : integer := (63 - 61); -- Performance Monitor Mark constant MSR_RI : integer := (63 - 62); -- Recoverable Interrupt constant MSR_LE : integer := (63 - 63); -- Little Endian -- SPR numbers subtype spr_num_t is integer range 0 to 1023; function decode_spr_num(insn: std_ulogic_vector(31 downto 0)) return spr_num_t; constant SPR_XER : spr_num_t := 1; constant SPR_LR : spr_num_t := 8; constant SPR_CTR : spr_num_t := 9; constant SPR_TAR : spr_num_t := 815; constant SPR_DSISR : spr_num_t := 18; constant SPR_DAR : spr_num_t := 19; constant SPR_TB : spr_num_t := 268; constant SPR_TBU : spr_num_t := 269; constant SPR_DEC : spr_num_t := 22; constant SPR_SRR0 : spr_num_t := 26; constant SPR_SRR1 : spr_num_t := 27; constant SPR_CFAR : spr_num_t := 28; constant SPR_HSRR0 : spr_num_t := 314; constant SPR_HSRR1 : spr_num_t := 315; constant SPR_SPRG0 : spr_num_t := 272; constant SPR_SPRG1 : spr_num_t := 273; constant SPR_SPRG2 : spr_num_t := 274; constant SPR_SPRG3 : spr_num_t := 275; constant SPR_SPRG3U : spr_num_t := 259; constant SPR_HSPRG0 : spr_num_t := 304; constant SPR_HSPRG1 : spr_num_t := 305; constant SPR_PID : spr_num_t := 48; constant SPR_PTCR : spr_num_t := 464; constant SPR_PVR : spr_num_t := 287; -- PMU registers constant SPR_UPMC1 : spr_num_t := 771; constant SPR_UPMC2 : spr_num_t := 772; constant SPR_UPMC3 : spr_num_t := 773; constant SPR_UPMC4 : spr_num_t := 774; constant SPR_UPMC5 : spr_num_t := 775; constant SPR_UPMC6 : spr_num_t := 776; constant SPR_UMMCR0 : spr_num_t := 779; constant SPR_UMMCR1 : spr_num_t := 782; constant SPR_UMMCR2 : spr_num_t := 769; constant SPR_UMMCRA : spr_num_t := 770; constant SPR_USIER : spr_num_t := 768; constant SPR_USIAR : spr_num_t := 780; constant SPR_USDAR : spr_num_t := 781; constant SPR_PMC1 : spr_num_t := 787; constant SPR_PMC2 : spr_num_t := 788; constant SPR_PMC3 : spr_num_t := 789; constant SPR_PMC4 : spr_num_t := 790; constant SPR_PMC5 : spr_num_t := 791; constant SPR_PMC6 : spr_num_t := 792; constant SPR_MMCR0 : spr_num_t := 795; constant SPR_MMCR1 : spr_num_t := 798; constant SPR_MMCR2 : spr_num_t := 785; constant SPR_MMCRA : spr_num_t := 786; constant SPR_SIER : spr_num_t := 784; constant SPR_SIAR : spr_num_t := 796; constant SPR_SDAR : spr_num_t := 797; -- GPR indices in the register file (GPR only) subtype gpr_index_t is std_ulogic_vector(4 downto 0); -- Extended GPR index (can hold an SPR or a FPR) subtype gspr_index_t is std_ulogic_vector(6 downto 0); -- FPR indices subtype fpr_index_t is std_ulogic_vector(4 downto 0); -- Some SPRs are stored in the register file, they use the magic -- GPR numbers above 31. -- -- The function fast_spr_num() returns the corresponding fast -- pseudo-GPR number for a given SPR number. The result MSB -- indicates if this is indeed a fast SPR. If clear, then -- the SPR is not stored in the GPR file. -- -- FPRs are also stored in the register file, using GSPR -- numbers from 64 to 95. -- function fast_spr_num(spr: spr_num_t) return gspr_index_t; -- Indices conversion functions function gspr_to_gpr(i: gspr_index_t) return gpr_index_t; function gpr_to_gspr(i: gpr_index_t) return gspr_index_t; function gpr_or_spr_to_gspr(g: gpr_index_t; s: gspr_index_t) return gspr_index_t; function is_fast_spr(s: gspr_index_t) return std_ulogic; function fpr_to_gspr(f: fpr_index_t) return gspr_index_t; -- The XER is split: the common bits (CA, OV, SO, OV32 and CA32) are -- in the CR file as a kind of CR extension (with a separate write -- control). The rest is stored in ctrl_t (effectively in execute1). type xer_common_t is record ca : std_ulogic; ca32 : std_ulogic; ov : std_ulogic; ov32 : std_ulogic; so : std_ulogic; end record; constant xerc_init : xer_common_t := (others => '0'); -- Some SPRs are stored in a pair of small RAMs in execute1 -- Even half: subtype ramspr_index is natural range 0 to 7; constant RAMSPR_SRR0 : ramspr_index := 0; constant RAMSPR_HSRR0 : ramspr_index := 1; constant RAMSPR_SPRG0 : ramspr_index := 2; constant RAMSPR_SPRG2 : ramspr_index := 3; constant RAMSPR_HSPRG0 : ramspr_index := 4; constant RAMSPR_LR : ramspr_index := 5; -- must equal RAMSPR_CTR constant RAMSPR_TAR : ramspr_index := 6; -- Odd half: constant RAMSPR_SRR1 : ramspr_index := 0; constant RAMSPR_HSRR1 : ramspr_index := 1; constant RAMSPR_SPRG1 : ramspr_index := 2; constant RAMSPR_SPRG3 : ramspr_index := 3; constant RAMSPR_HSPRG1 : ramspr_index := 4; constant RAMSPR_CTR : ramspr_index := 5; -- must equal RAMSPR_LR type ram_spr_info is record index : ramspr_index; isodd : std_ulogic; valid : std_ulogic; end record; constant ram_spr_info_init: ram_spr_info := (index => 0, others => '0'); subtype spr_selector is std_ulogic_vector(2 downto 0); type spr_id is record sel : spr_selector; valid : std_ulogic; ispmu : std_ulogic; end record; constant spr_id_init : spr_id := (sel => "000", others => '0'); constant SPRSEL_TB : spr_selector := 3x"0"; constant SPRSEL_TBU : spr_selector := 3x"1"; constant SPRSEL_DEC : spr_selector := 3x"2"; constant SPRSEL_PVR : spr_selector := 3x"3"; constant SPRSEL_LOGA : spr_selector := 3x"4"; constant SPRSEL_LOGD : spr_selector := 3x"5"; constant SPRSEL_CFAR : spr_selector := 3x"6"; constant SPRSEL_XER : spr_selector := 3x"7"; -- FPSCR bit numbers constant FPSCR_FX : integer := 63 - 32; constant FPSCR_FEX : integer := 63 - 33; constant FPSCR_VX : integer := 63 - 34; constant FPSCR_OX : integer := 63 - 35; constant FPSCR_UX : integer := 63 - 36; constant FPSCR_ZX : integer := 63 - 37; constant FPSCR_XX : integer := 63 - 38; constant FPSCR_VXSNAN : integer := 63 - 39; constant FPSCR_VXISI : integer := 63 - 40; constant FPSCR_VXIDI : integer := 63 - 41; constant FPSCR_VXZDZ : integer := 63 - 42; constant FPSCR_VXIMZ : integer := 63 - 43; constant FPSCR_VXVC : integer := 63 - 44; constant FPSCR_FR : integer := 63 - 45; constant FPSCR_FI : integer := 63 - 46; constant FPSCR_C : integer := 63 - 47; constant FPSCR_FL : integer := 63 - 48; constant FPSCR_FG : integer := 63 - 49; constant FPSCR_FE : integer := 63 - 50; constant FPSCR_FU : integer := 63 - 51; constant FPSCR_VXSOFT : integer := 63 - 53; constant FPSCR_VXSQRT : integer := 63 - 54; constant FPSCR_VXCVI : integer := 63 - 55; constant FPSCR_VE : integer := 63 - 56; constant FPSCR_OE : integer := 63 - 57; constant FPSCR_UE : integer := 63 - 58; constant FPSCR_ZE : integer := 63 - 59; constant FPSCR_XE : integer := 63 - 60; constant FPSCR_NI : integer := 63 - 61; constant FPSCR_RN : integer := 63 - 63; -- Real addresses -- REAL_ADDR_BITS is the number of real address bits that we store constant REAL_ADDR_BITS : positive := 56; subtype real_addr_t is std_ulogic_vector(REAL_ADDR_BITS - 1 downto 0); function addr_to_real(addr: std_ulogic_vector(63 downto 0)) return real_addr_t; -- Used for tracking instruction completion and pending register writes constant TAG_COUNT : positive := 4; constant TAG_NUMBER_BITS : natural := log2(TAG_COUNT); subtype tag_number_t is integer range 0 to TAG_COUNT - 1; subtype tag_index_t is unsigned(TAG_NUMBER_BITS - 1 downto 0); type instr_tag_t is record tag : tag_number_t; valid : std_ulogic; end record; constant instr_tag_init : instr_tag_t := (tag => 0, valid => '0'); function tag_match(tag1 : instr_tag_t; tag2 : instr_tag_t) return boolean; subtype intr_vector_t is integer range 0 to 16#fff#; -- For now, fixed 16 sources, make this either a parametric -- package of some sort or an unconstrainted array. type ics_to_icp_t is record -- Level interrupts only, ICS just keeps prsenting the -- highest priority interrupt. Once handling edge, something -- smarter involving handshake & reject support will be needed src : std_ulogic_vector(3 downto 0); pri : std_ulogic_vector(7 downto 0); end record; -- This needs to die... type ctrl_t is record tb: std_ulogic_vector(63 downto 0); dec: std_ulogic_vector(63 downto 0); msr: std_ulogic_vector(63 downto 0); cfar: std_ulogic_vector(63 downto 0); xer_low: std_ulogic_vector(17 downto 0); end record; constant ctrl_t_init : ctrl_t := (xer_low => 18x"0", others => (others => '0')); type Fetch1ToIcacheType is record req: std_ulogic; virt_mode : std_ulogic; priv_mode : std_ulogic; big_endian : std_ulogic; stop_mark: std_ulogic; predicted : std_ulogic; pred_ntaken : std_ulogic; nia: std_ulogic_vector(63 downto 0); end record; type IcacheToDecode1Type is record valid: std_ulogic; stop_mark: std_ulogic; fetch_failed: std_ulogic; nia: std_ulogic_vector(63 downto 0); insn: std_ulogic_vector(31 downto 0); big_endian: std_ulogic; next_predicted: std_ulogic; next_pred_ntaken: std_ulogic; end record; type IcacheEventType is record icache_miss : std_ulogic; itlb_miss_resolved : std_ulogic; end record; type Decode1ToDecode2Type is record valid: std_ulogic; stop_mark : std_ulogic; nia: std_ulogic_vector(63 downto 0); insn: std_ulogic_vector(31 downto 0); ispr1: gspr_index_t; -- (G)SPR used for branch condition (CTR) or mfspr ispr2: gspr_index_t; -- (G)SPR used for branch target (CTR, LR, TAR) ispro: gspr_index_t; -- (G)SPR written with LR or CTR decode: decode_rom_t; br_pred: std_ulogic; -- Branch was predicted to be taken big_endian: std_ulogic; spr_info : spr_id; ram_spr : ram_spr_info; end record; constant Decode1ToDecode2Init : Decode1ToDecode2Type := (valid => '0', stop_mark => '0', nia => (others => '0'), insn => (others => '0'), ispr1 => (others => '0'), ispr2 => (others => '0'), ispro => (others => '0'), decode => decode_rom_init, br_pred => '0', big_endian => '0', spr_info => spr_id_init, ram_spr => ram_spr_info_init); type Decode1ToFetch1Type is record redirect : std_ulogic; redirect_nia : std_ulogic_vector(63 downto 0); end record; type bypass_data_t is record tag : instr_tag_t; data : std_ulogic_vector(63 downto 0); end record; constant bypass_data_init : bypass_data_t := (tag => instr_tag_init, data => (others => '0')); type cr_bypass_data_t is record tag : instr_tag_t; data : std_ulogic_vector(31 downto 0); end record; constant cr_bypass_data_init : cr_bypass_data_t := (tag => instr_tag_init, data => (others => '0')); type Decode2ToExecute1Type is record valid: std_ulogic; unit : unit_t; fac : facility_t; insn_type: insn_type_t; nia: std_ulogic_vector(63 downto 0); instr_tag : instr_tag_t; write_reg: gspr_index_t; write_reg_enable: std_ulogic; read_reg1: gspr_index_t; read_reg2: gspr_index_t; read_reg3: gspr_index_t; read_data1: std_ulogic_vector(63 downto 0); read_data2: std_ulogic_vector(63 downto 0); read_data3: std_ulogic_vector(63 downto 0); cr: std_ulogic_vector(31 downto 0); xerc: xer_common_t; lr: std_ulogic; br_abs: std_ulogic; rc: std_ulogic; oe: std_ulogic; invert_a: std_ulogic; invert_out: std_ulogic; input_carry: carry_in_t; output_carry: std_ulogic; input_cr: std_ulogic; output_cr: std_ulogic; output_xer: std_ulogic; is_32bit: std_ulogic; is_signed: std_ulogic; insn: std_ulogic_vector(31 downto 0); data_len: std_ulogic_vector(3 downto 0); byte_reverse : std_ulogic; sign_extend : std_ulogic; -- do we need to sign extend? update : std_ulogic; -- is this an update instruction? reserve : std_ulogic; -- set for larx/stcx br_pred : std_ulogic; result_sel : std_ulogic_vector(2 downto 0); -- select source of result sub_select : std_ulogic_vector(2 downto 0); -- sub-result selection repeat : std_ulogic; -- set if instruction is cracked into two ops second : std_ulogic; -- set if this is the second op spr_select : spr_id; spr_is_ram : std_ulogic; ramspr_even_rdaddr : ramspr_index; ramspr_odd_rdaddr : ramspr_index; ramspr_rd_odd : std_ulogic; ramspr_wraddr : ramspr_index; ramspr_write_even : std_ulogic; ramspr_write_odd : std_ulogic; dec_ctr : std_ulogic; end record; constant Decode2ToExecute1Init : Decode2ToExecute1Type := (valid => '0', unit => NONE, fac => NONE, insn_type => OP_ILLEGAL, instr_tag => instr_tag_init, write_reg_enable => '0', lr => '0', br_abs => '0', rc => '0', oe => '0', invert_a => '0', invert_out => '0', input_carry => ZERO, output_carry => '0', input_cr => '0', output_cr => '0', output_xer => '0', is_32bit => '0', is_signed => '0', xerc => xerc_init, reserve => '0', br_pred => '0', byte_reverse => '0', sign_extend => '0', update => '0', nia => (others => '0'), read_data1 => (others => '0'), read_data2 => (others => '0'), read_data3 => (others => '0'), cr => (others => '0'), insn => (others => '0'), data_len => (others => '0'), result_sel => "000", sub_select => "000", repeat => '0', second => '0', spr_select => spr_id_init, spr_is_ram => '0', ramspr_even_rdaddr => 0, ramspr_odd_rdaddr => 0, ramspr_rd_odd => '0', ramspr_wraddr => 0, ramspr_write_even => '0', ramspr_write_odd => '0', dec_ctr => '0', others => (others => '0')); type MultiplyInputType is record valid: std_ulogic; data1: std_ulogic_vector(63 downto 0); data2: std_ulogic_vector(63 downto 0); addend: std_ulogic_vector(127 downto 0); is_32bit: std_ulogic; not_result: std_ulogic; end record; constant MultiplyInputInit : MultiplyInputType := (valid => '0', is_32bit => '0', not_result => '0', others => (others => '0')); type MultiplyOutputType is record valid: std_ulogic; result: std_ulogic_vector(127 downto 0); overflow : std_ulogic; end record; constant MultiplyOutputInit : MultiplyOutputType := (valid => '0', overflow => '0', others => (others => '0')); type Execute1ToDividerType is record valid: std_ulogic; flush: std_ulogic; dividend: std_ulogic_vector(63 downto 0); divisor: std_ulogic_vector(63 downto 0); is_signed: std_ulogic; is_32bit: std_ulogic; is_extended: std_ulogic; is_modulus: std_ulogic; neg_result: std_ulogic; end record; constant Execute1ToDividerInit: Execute1ToDividerType := ( dividend => 64x"0", divisor => 64x"0", others => '0'); type PMUEventType is record no_instr_avail : std_ulogic; dispatch : std_ulogic; ext_interrupt : std_ulogic; instr_complete : std_ulogic; fp_complete : std_ulogic; ld_complete : std_ulogic; st_complete : std_ulogic; br_taken_complete : std_ulogic; br_mispredict : std_ulogic; ipref_discard : std_ulogic; itlb_miss : std_ulogic; itlb_miss_resolved : std_ulogic; icache_miss : std_ulogic; dc_miss_resolved : std_ulogic; dc_load_miss : std_ulogic; dc_ld_miss_resolved : std_ulogic; dc_store_miss : std_ulogic; dtlb_miss : std_ulogic; dtlb_miss_resolved : std_ulogic; ld_miss_nocache : std_ulogic; ld_fill_nocache : std_ulogic; end record; constant PMUEventInit : PMUEventType := (others => '0'); type Execute1ToPMUType is record mfspr : std_ulogic; mtspr : std_ulogic; spr_num : std_ulogic_vector(4 downto 0); spr_val : std_ulogic_vector(63 downto 0); tbbits : std_ulogic_vector(3 downto 0); -- event bits from timebase pmm_msr : std_ulogic; -- PMM bit from MSR pr_msr : std_ulogic; -- PR bit from MSR run : std_ulogic; nia : std_ulogic_vector(63 downto 0); addr : std_ulogic_vector(63 downto 0); addr_v : std_ulogic; occur : PMUEventType; end record; type PMUToExecute1Type is record spr_val : std_ulogic_vector(63 downto 0); intr : std_ulogic; end record; type Decode2ToRegisterFileType is record read1_enable : std_ulogic; read1_reg : gspr_index_t; read2_enable : std_ulogic; read2_reg : gspr_index_t; read3_enable : std_ulogic; read3_reg : gspr_index_t; end record; type RegisterFileToDecode2Type is record read1_data : std_ulogic_vector(63 downto 0); read2_data : std_ulogic_vector(63 downto 0); read3_data : std_ulogic_vector(63 downto 0); end record; type Decode2ToCrFileType is record read : std_ulogic; end record; type CrFileToDecode2Type is record read_cr_data : std_ulogic_vector(31 downto 0); read_xerc_data : xer_common_t; end record; type Execute1ToLoadstore1Type is record valid : std_ulogic; op : insn_type_t; -- what ld/st or m[tf]spr or TLB op to do nia : std_ulogic_vector(63 downto 0); insn : std_ulogic_vector(31 downto 0); instr_tag : instr_tag_t; addr1 : std_ulogic_vector(63 downto 0); addr2 : std_ulogic_vector(63 downto 0); data : std_ulogic_vector(63 downto 0); -- data to write, unused for read write_reg : gspr_index_t; length : std_ulogic_vector(3 downto 0); ci : std_ulogic; -- cache-inhibited load/store byte_reverse : std_ulogic; sign_extend : std_ulogic; -- do we need to sign extend? update : std_ulogic; -- is this an update instruction? xerc : xer_common_t; reserve : std_ulogic; -- set for larx/stcx. rc : std_ulogic; -- set for stcx. virt_mode : std_ulogic; -- do translation through TLB priv_mode : std_ulogic; -- privileged mode (MSR[PR] = 0) mode_32bit : std_ulogic; -- trim addresses to 32 bits is_32bit : std_ulogic; repeat : std_ulogic; second : std_ulogic; e2stall : std_ulogic; msr : std_ulogic_vector(63 downto 0); end record; constant Execute1ToLoadstore1Init : Execute1ToLoadstore1Type := (valid => '0', op => OP_ILLEGAL, ci => '0', byte_reverse => '0', sign_extend => '0', update => '0', xerc => xerc_init, reserve => '0', rc => '0', virt_mode => '0', priv_mode => '0', nia => (others => '0'), insn => (others => '0'), instr_tag => instr_tag_init, addr1 => (others => '0'), addr2 => (others => '0'), data => (others => '0'), write_reg => (others => '0'), length => (others => '0'), mode_32bit => '0', is_32bit => '0', repeat => '0', second => '0', e2stall => '0', msr => (others => '0')); type Loadstore1ToExecute1Type is record busy : std_ulogic; l2stall : std_ulogic; end record; type Loadstore1ToDcacheType is record valid : std_ulogic; hold : std_ulogic; load : std_ulogic; -- is this a load dcbz : std_ulogic; nc : std_ulogic; reserve : std_ulogic; atomic : std_ulogic; -- part of a multi-transfer atomic op atomic_last : std_ulogic; virt_mode : std_ulogic; priv_mode : std_ulogic; addr : std_ulogic_vector(63 downto 0); data : std_ulogic_vector(63 downto 0); -- valid the cycle after .valid = 1 byte_sel : std_ulogic_vector(7 downto 0); end record; type DcacheToLoadstore1Type is record valid : std_ulogic; data : std_ulogic_vector(63 downto 0); store_done : std_ulogic; error : std_ulogic; cache_paradox : std_ulogic; end record; type DcacheEventType is record load_miss : std_ulogic; store_miss : std_ulogic; dcache_refill : std_ulogic; dtlb_miss : std_ulogic; dtlb_miss_resolved : std_ulogic; end record; type Loadstore1ToMmuType is record valid : std_ulogic; tlbie : std_ulogic; slbia : std_ulogic; mtspr : std_ulogic; iside : std_ulogic; load : std_ulogic; priv : std_ulogic; sprn : std_ulogic_vector(9 downto 0); addr : std_ulogic_vector(63 downto 0); rs : std_ulogic_vector(63 downto 0); end record; type MmuToLoadstore1Type is record done : std_ulogic; err : std_ulogic; invalid : std_ulogic; badtree : std_ulogic; segerr : std_ulogic; perm_error : std_ulogic; rc_error : std_ulogic; sprval : std_ulogic_vector(63 downto 0); end record; type MmuToDcacheType is record valid : std_ulogic; tlbie : std_ulogic; doall : std_ulogic; tlbld : std_ulogic; addr : std_ulogic_vector(63 downto 0); pte : std_ulogic_vector(63 downto 0); end record; type DcacheToMmuType is record stall : std_ulogic; done : std_ulogic; err : std_ulogic; data : std_ulogic_vector(63 downto 0); end record; type MmuToIcacheType is record tlbld : std_ulogic; tlbie : std_ulogic; doall : std_ulogic; addr : std_ulogic_vector(63 downto 0); pte : std_ulogic_vector(63 downto 0); end record; type Loadstore1ToWritebackType is record valid : std_ulogic; instr_tag : instr_tag_t; write_enable: std_ulogic; write_reg : gspr_index_t; write_data : std_ulogic_vector(63 downto 0); xerc : xer_common_t; rc : std_ulogic; store_done : std_ulogic; interrupt : std_ulogic; intr_vec : intr_vector_t; srr1: std_ulogic_vector(15 downto 0); end record; constant Loadstore1ToWritebackInit : Loadstore1ToWritebackType := (valid => '0', instr_tag => instr_tag_init, write_enable => '0', write_reg => (others => '0'), write_data => (others => '0'), xerc => xerc_init, rc => '0', store_done => '0', interrupt => '0', intr_vec => 0, srr1 => (others => '0')); type Loadstore1EventType is record load_complete : std_ulogic; store_complete : std_ulogic; itlb_miss : std_ulogic; end record; type Execute1ToWritebackType is record valid: std_ulogic; instr_tag : instr_tag_t; rc : std_ulogic; mode_32bit : std_ulogic; write_enable : std_ulogic; write_reg: gspr_index_t; write_data: std_ulogic_vector(63 downto 0); write_cr_enable : std_ulogic; write_cr_mask : std_ulogic_vector(7 downto 0); write_cr_data : std_ulogic_vector(31 downto 0); write_xerc_enable : std_ulogic; xerc : xer_common_t; interrupt : std_ulogic; intr_vec : intr_vector_t; redirect: std_ulogic; redir_mode: std_ulogic_vector(3 downto 0); last_nia: std_ulogic_vector(63 downto 0); br_offset: std_ulogic_vector(63 downto 0); br_last: std_ulogic; br_taken: std_ulogic; abs_br: std_ulogic; srr1: std_ulogic_vector(15 downto 0); msr: std_ulogic_vector(63 downto 0); end record; constant Execute1ToWritebackInit : Execute1ToWritebackType := (valid => '0', instr_tag => instr_tag_init, rc => '0', mode_32bit => '0', write_enable => '0', write_cr_enable => '0', write_xerc_enable => '0', xerc => xerc_init, write_data => (others => '0'), write_cr_mask => (others => '0'), write_cr_data => (others => '0'), write_reg => (others => '0'), interrupt => '0', intr_vec => 0, redirect => '0', redir_mode => "0000", last_nia => (others => '0'), br_offset => (others => '0'), br_last => '0', br_taken => '0', abs_br => '0', srr1 => (others => '0'), msr => (others => '0')); type Execute1ToFPUType is record valid : std_ulogic; op : insn_type_t; nia : std_ulogic_vector(63 downto 0); itag : instr_tag_t; insn : std_ulogic_vector(31 downto 0); single : std_ulogic; is_signed : std_ulogic; fe_mode : std_ulogic_vector(1 downto 0); fra : std_ulogic_vector(63 downto 0); frb : std_ulogic_vector(63 downto 0); frc : std_ulogic_vector(63 downto 0); frt : gspr_index_t; rc : std_ulogic; m32b : std_ulogic; out_cr : std_ulogic; oe : std_ulogic; xerc : xer_common_t; stall : std_ulogic; end record; constant Execute1ToFPUInit : Execute1ToFPUType := (valid => '0', op => OP_ILLEGAL, nia => (others => '0'), itag => instr_tag_init, insn => (others => '0'), fe_mode => "00", rc => '0', fra => (others => '0'), frb => (others => '0'), frc => (others => '0'), frt => (others => '0'), single => '0', is_signed => '0', out_cr => '0', m32b => '0', oe => '0', xerc => xerc_init, stall => '0'); type FPUToExecute1Type is record busy : std_ulogic; f2stall : std_ulogic; exception : std_ulogic; end record; constant FPUToExecute1Init : FPUToExecute1Type := (others => '0'); type FPUToWritebackType is record valid : std_ulogic; interrupt : std_ulogic; instr_tag : instr_tag_t; write_enable : std_ulogic; write_reg : gspr_index_t; write_data : std_ulogic_vector(63 downto 0); write_cr_enable : std_ulogic; write_cr_mask : std_ulogic_vector(7 downto 0); write_cr_data : std_ulogic_vector(31 downto 0); write_xerc : std_ulogic; xerc : xer_common_t; intr_vec : intr_vector_t; srr1 : std_ulogic_vector(15 downto 0); end record; constant FPUToWritebackInit : FPUToWritebackType := (valid => '0', interrupt => '0', instr_tag => instr_tag_init, write_enable => '0', write_reg => (others => '0'), write_cr_enable => '0', write_cr_mask => (others => '0'), write_cr_data => (others => '0'), write_xerc => '0', xerc => xerc_init, intr_vec => 0, srr1 => (others => '0'), others => (others => '0')); type DividerToExecute1Type is record valid: std_ulogic; write_reg_data: std_ulogic_vector(63 downto 0); overflow : std_ulogic; end record; constant DividerToExecute1Init : DividerToExecute1Type := (valid => '0', overflow => '0', others => (others => '0')); type WritebackToFetch1Type is record redirect: std_ulogic; virt_mode: std_ulogic; priv_mode: std_ulogic; big_endian: std_ulogic; mode_32bit: std_ulogic; redirect_nia: std_ulogic_vector(63 downto 0); br_nia : std_ulogic_vector(63 downto 0); br_last : std_ulogic; br_taken : std_ulogic; end record; constant WritebackToFetch1Init : WritebackToFetch1Type := (redirect => '0', virt_mode => '0', priv_mode => '0', big_endian => '0', mode_32bit => '0', redirect_nia => (others => '0'), br_last => '0', br_taken => '0', br_nia => (others => '0')); type WritebackToRegisterFileType is record write_reg : gspr_index_t; write_data : std_ulogic_vector(63 downto 0); write_enable : std_ulogic; end record; constant WritebackToRegisterFileInit : WritebackToRegisterFileType := (write_enable => '0', write_data => (others => '0'), others => (others => '0')); type WritebackToCrFileType is record write_cr_enable : std_ulogic; write_cr_mask : std_ulogic_vector(7 downto 0); write_cr_data : std_ulogic_vector(31 downto 0); write_xerc_enable : std_ulogic; write_xerc_data : xer_common_t; end record; constant WritebackToCrFileInit : WritebackToCrFileType := (write_cr_enable => '0', write_xerc_enable => '0', write_xerc_data => xerc_init, write_cr_mask => (others => '0'), write_cr_data => (others => '0')); type WritebackToExecute1Type is record intr : std_ulogic; srr1 : std_ulogic_vector(15 downto 0); end record; type WritebackEventType is record instr_complete : std_ulogic; fp_complete : std_ulogic; end record; end common; package body common is function decode_spr_num(insn: std_ulogic_vector(31 downto 0)) return spr_num_t is begin return to_integer(unsigned(insn(15 downto 11) & insn(20 downto 16))); end; function fast_spr_num(spr: spr_num_t) return gspr_index_t is begin return "0000000"; end; function gspr_to_gpr(i: gspr_index_t) return gpr_index_t is begin return i(4 downto 0); end; function gpr_to_gspr(i: gpr_index_t) return gspr_index_t is begin return "00" & i; end; function gpr_or_spr_to_gspr(g: gpr_index_t; s: gspr_index_t) return gspr_index_t is begin if s(5) = '1' then return s; else return gpr_to_gspr(g); end if; end; function is_fast_spr(s: gspr_index_t) return std_ulogic is begin return s(5); end; function fpr_to_gspr(f: fpr_index_t) return gspr_index_t is begin return "10" & f; end; function tag_match(tag1 : instr_tag_t; tag2 : instr_tag_t) return boolean is begin return tag1.valid = '1' and tag2.valid = '1' and tag1.tag = tag2.tag; end; function addr_to_real(addr: std_ulogic_vector(63 downto 0)) return real_addr_t is begin return addr(real_addr_t'range); end; end common;