arm7tdmis_top.vhd

这是一个基本的ARM7_Core 有基本功能 但不是太完善

					   MemDataRegOut     => IPDR_DataOut,         -- From zero or sign extender
					   AdrGenDataOut	 => LSAdrGen_BDataOut,	  -- From the addrerss generator
					   -- Immediate fields
					   SExtOffset24Bit   => IPDR_SExtOffset24Bit, -- From instruction pipeline
                       Offset12Bit       => IPDR_Offset12Bit,	  -- From instruction pipeline
                       Offset8Bit        => IPDR_Offset8Bit,	  -- From instruction pipeline
                       Immediate8Bit     => IPDR_Immediate8Bit,	  -- From instruction pipeline
					   -- Control
					   RegFileBOutSel     => BBM_RegFileBOutSel,     -- Conrol logic
	                   MultiplierBOutSel  => BBM_MultiplierBOutSel,	 -- Conrol logic
					   MemDataRegOutSel   => BBM_MemDataRegOutSel,	 -- Conrol logic
					   SExtOffset24BitSel => BBM_SExtOffset24BitSel, -- Conrol logic
                       Offset12BitSel     => BBM_Offset12BitSel,	 -- Conrol logic
                       Offset8BitSel      => BBM_Offset8BitSel,		 -- Conrol logic
                       Immediate8BitSel   => BBM_Immediate8BitSel,	 -- Conrol logic
					   AdrGenDataSel	  => BBM_AdrGenDataSel,
							   -- Data output
					   BBusOut		     => BBM_BBusOut
					          );
					  
						  

-- Address generator for load/store
LSAdrGen_Inst:component LSAdrGen port map (
						-- Global control signals
	                    nRESET           => nRESET,
						CLK              => CLK,
						CLKEN            => CLKEN,
	                    -- Control and data
						RmDataIn	     => RegFile_BBusOut,     --  !!! was BBM_BBusOut,
						BDataOut	     => LSAdrGen_BDataOut,
						RegisterList     => LSAdrGen_RegisterList,
	                    IncBeforeSel     => LSAdrGen_IncBeforeSel,
	                    DecBeforeSel     => LSAdrGen_DecBeforeSel,
						DecAfterSel      => LSAdrGen_DecAfterSel,
						MltAdrSel	     => LSAdrGen_MltAdrSel,
						SngMltSel	     => LSAdrGen_SngMltSel
						    				);

ResltBitMask_Inst:component ResltBitMask port map(
					   -- Data
	                   DataIn     => ALU_DataOut,
	                   DataOut    => RBM_DataOut,
					   -- Control
					   ClrBitZero => RBM_ClrBitZero,
					   ClrBitOne  => RBM_ClrBitOne,
					   SetBitZero => RBM_SetBitZero
	                                              );


-- Thumb decoder is implemented												  
ThDcdIsImplemented:if CThumbImp generate

ThumbDecoder_Inst:component ThumbDecoder 
	                   port map(
					   InstForDecode   => IPDR_ToThumbDecoder,
					   ExpandedInst	   => IPDR_FromThumbDecoder,
					   HalfWordAddress => IPDR_HalfWordAddress,
					   ThumbDecoderEn  => ThDC_ThumbDecoderEn,
					   ThBLFP          => ThDC_ThBLFP,
                       ThBLSP          => ThDC_ThBLSP
					       );

end generate;
						   
-- Thumb decoder is not implemented
ThDcdIsNotImplemented:if not CThumbImp generate						   
IPDR_FromThumbDecoder <= IPDR_ToThumbDecoder;
ThDC_ThBLFP <= '0';
ThDC_ThBLSP <= '0';
end generate;	
						   
-- Control logic
ControlLogic_Inst:component ControlLogic port map(
	                   -- Clock and reset
				       nRESET               => nRESET,
					   CLK                  => CLK,
					   CLKEN                => CLKEN,

					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Control signals commom for several modules
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   BigEndianMode        => BigEndianMode,
					   
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Instruction pipeline and data in registers control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Interfaces for the internal CPU modules
					   InstForDecode        => IPDR_InstForDecode,
					   InstFetchAbort       => IPDR_InstFetchAbort,
					   StagnatePipeline	    => IPDR_StagnatePipeline,
					   StagnatePipelineDel	=> IPDR_StagnatePipelineDel,
					   FirstInstFetch		=> IPRD_FirstInstFetch,
					   -- Data out register and control(sign/zero, byte/halfword  extension) 
					   SignExt				=> IPDR_SignExt,
					   ZeroExt				=> IPDR_ZeroExt,
					   nB_HW				=> IPDR_nB_HW,
					   -- Bus control
					   EndianMode           => IPDR_EndianMode,
					   					   
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Data output register control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^					   
						StoreHalfWord => DOR_StoreHalfWord,
						StoreByte	  => DOR_StoreByte,
						
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Address multiplexer and incrementer control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   ExceptionVector      => AMI_ExceptionVector,
					   PCInSel		        => AMI_PCInSel,
					   ALUInSel		        => AMI_ALUInSel,
					   ExceptionVectorSel   => AMI_ExceptionVectorSel,
					   PCIncStep            => AMI_PCIncStep,
					   AdrIncStep		    => AMI_AdrIncStep,
					   AdrToPCSel	        => AMI_AdrToPCSel,
					   AdrCntEn             => AMI_AdrCntEn, 
					   
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- ALU control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					    InvA	   => ALU_InvA,
						InvB	   => ALU_InvB,
						PassA	   => ALU_PassA,
						PassB	   => ALU_PassB,
						-- Logic operations
						AND_Op	   => ALU_AND_Op,
						ORR_Op	   => ALU_ORR_Op,
						EOR_Op	   => ALU_EOR_Op,
						-- Flag inputs						
						CFlagUse   => ALU_CFlagUse,
						-- Flag outputs
						CFlagOut    => ALU_CFlagOut,
						VFlagOut    => ALU_VFlagOut,
						NFlagOut    => ALU_NFlagOut,
						ZFlagOut    => ALU_ZFlagOut,
					   
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Multiplier control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   LoadRsRm    => Mult_LoadRsRm,
					   LoadPS      => Mult_LoadPS,
					   ClearPSC    => Mult_ClearPSC,
					   UnsignedMul => Mult_UnsignedMul,
					   ReadLH	   => Mult_ReadLH,
					   MulResRdy   => Mult_MulResRdy,

					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Register file control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					    ABusRdAdr      => RegFile_ABusRdAdr,
						BBusRdAdr      => RegFile_BBusRdAdr,
						WriteAdr       => RegFile_WriteAdr,
						WrEn	       => RegFile_WrEn,
						-- Program counter
						PCWrEn         => RegFile_PCWrEn,
						PCSrcSel       => RegFile_PCSrcSel,
						-- Mode control signals
						RFMode         => RegFile_RFMode,
					   	SaveBaseReg    => RegFile_SaveBaseReg,
                        RestoreBaseReg => RegFile_RestoreBaseReg,
						
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Programm Status Registers control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- ALU bus input control
					   PSRDInSel => PSR_PSRDInSel,
					   -- Current program state
					   CPSRIn    => PSR_CPSRIn,
					   CPSRWrEn  => PSR_CPSRWrEn,
					   CPSROut   => PSR_CPSROut,
					   CFlForMul => PSR_CFlForMul,
					   -- Saved program state
					   SPSRIn    => PSR_SPSRIn,
					   SPSROut   => PSR_SPSROut,
	                   SPSRWrMsk => PSR_SPSRWrMsk,					   
					   -- PSR mode control
					   PSRMode   => PSR_PSRMode,
					   
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Shifter control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
--	                   ShCFlagIn  => ,
--					   ShCFlagOut => ,
                       ShLenImm   => Shifter_ShLenImm,
					   ShType     => Shifter_ShType,
					   ShRotImm   => Shifter_ShRotImm,
					   ShEn       => Shifter_ShEn,
					   ShCFlagEn  => Shifter_ShCFlagEn,

					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Bus A multiplexer control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   RegFileAOutSel    => ABM_RegFileAOutSel,
	                   MultiplierAOutSel => ABM_MultiplierAOutSel,
					   CPSROutSel        => ABM_CPSROutSel,
					   SPSROutSel        => ABM_SPSROutSel,
					   
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Bus B multiplexer control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   RegFileBOutSel     => BBM_RegFileBOutSel,
	                   MultiplierBOutSel  => BBM_MultiplierBOutSel,
					   MemDataRegOutSel   => BBM_MemDataRegOutSel,
					   SExtOffset24BitSel => BBM_SExtOffset24BitSel,
                       Offset12BitSel     => BBM_Offset12BitSel,
                       Offset8BitSel      => BBM_Offset8BitSel,
                       Immediate8BitSel   => BBM_Immediate8BitSel,
					   AdrGenDataSel	  => BBM_AdrGenDataSel,
					   
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Address generator for Load/Store instructions control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   	RegisterList     => LSAdrGen_RegisterList,
	                    IncBeforeSel     => LSAdrGen_IncBeforeSel,
	                    DecBeforeSel     => LSAdrGen_DecBeforeSel,
						DecAfterSel      => LSAdrGen_DecAfterSel,
						MltAdrSel	     => LSAdrGen_MltAdrSel,
						SngMltSel	     => LSAdrGen_SngMltSel,
					   	
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Bit 0,1 clear/set control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					    ClrBitZero       => RBM_ClrBitZero,
					    ClrBitOne        => RBM_ClrBitOne,
					   	SetBitZero       => RBM_SetBitZero,
						
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Thumb decoder control
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   ThumbDecoderEn  => ThDC_ThumbDecoderEn,
					   ThBLFP          => ThDC_ThBLFP,
                       ThBLSP          => ThDC_ThBLSP,
					   
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Rm[0] input for ARM/Thumb state detection during BX
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   RmBitZero  => RegFile_BBusOut(0),  -- !!! Check A or B bus
					   						
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- External signals 
					   -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
					   -- Interrupts
					   nIRQ       => nIRQ,
					   nFIQ       => nFIQ,
					   -- Bus control
					   CFGBIGEND  => CFGBIGEND,
					   -- Arbitration
					   DMORE      => DMORE,
	                   LOCK       => LOCK,
					   -- Memory interface
					   ABORT      => ABORT,
   					   WRITE      => WRITE,
                       SIZE       => SIZE_Int,
					   PROT       => PROT,
					   TRANS      => TRANS,
					   -- Memory management interface
					   CPnTRANS   => CPnTRANS,
					   CPnOPC     => CPnOPC,
					   -- Coprocessor interface
					   CPnMREQ    => CPnMREQ,
					   CPnSEQ     => CPnSEQ,
					   CPTBIT     => CPTBIT,
					   CPnI       => CPnI,
					   CPA	      => CPA,
					   CPB	      => CPB
					   );


-- Check if slack estimation takes place 
assert not CSlackEstim
 report"Normal simulation is impossible"
  severity FAILURE;

NormalCompilation:if not CSlackEstim generate
-- Outputs of the core					   
ADDR <= ADDR_Int;					   
SIZE <= SIZE_Int;
end generate;

EstimationCompilation:if CSlackEstim generate
OnlyForSlackEstimation:process(nRESET,CLK)
begin
 if nRESET='0' then                -- Reset
  ADDR <= (others => '0');					   
  SIZE <= (others => '0');	
 elsif CLK='1' and CLK'event then  -- Clock
  if CLKEN='1' then                -- Clock enable
  ADDR <= ADDR_Int;					   
  SIZE <= SIZE_Int;
 end if;		
end if;	
end process;			

end generate;


end Struct;