78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
#pragma once
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#include "shil.h"
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#include "../sh4_if.h"
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#define mkbet(c,s,v) ((c<<3)|(s<<1)|v)
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#define BET_GET_CLS(x) (x>>3)
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enum BlockEndType
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{
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BET_CLS_Static=0,
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BET_CLS_Dynamic=1,
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BET_CLS_COND=2,
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BET_SCL_Jump=0,
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BET_SCL_Call=1,
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BET_SCL_Ret=2,
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BET_SCL_Intr=3,
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BET_StaticJump=mkbet(BET_CLS_Static,BET_SCL_Jump,0), //BranchBlock is jump target
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BET_StaticCall=mkbet(BET_CLS_Static,BET_SCL_Call,0), //BranchBlock is jump target, NextBlock is ret hint
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BET_StaticIntr=mkbet(BET_CLS_Static,BET_SCL_Intr,0), //(pending inttr!=0) -> Intr else NextBlock
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BET_DynamicJump=mkbet(BET_CLS_Dynamic,BET_SCL_Jump,0), //pc+2 is jump target
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BET_DynamicCall=mkbet(BET_CLS_Dynamic,BET_SCL_Call,0), //pc+2 is jump target, NextBlock is ret hint
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BET_DynamicRet=mkbet(BET_CLS_Dynamic,BET_SCL_Ret,0), //pr is jump target
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BET_DynamicIntr=mkbet(BET_CLS_Dynamic,BET_SCL_Intr,0), //(pending inttr!=0) -> Intr else Dynamic
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BET_Cond_0=mkbet(BET_CLS_COND,BET_SCL_Jump,0), //sr.T==0 -> BranchBlock else NextBlock
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BET_Cond_1=mkbet(BET_CLS_COND,BET_SCL_Jump,1), //sr.T==1 -> BranchBlock else NextBlock
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};
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enum NextDecoderOperation
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{
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NDO_NextOp, //pc+=2
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NDO_End, //End the block, Type = BlockEndType
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NDO_Delayslot, //pc+=2, NextOp=DelayOp
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NDO_Jump, //pc=JumpAddr,NextOp=JumpOp
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};
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//ngen features
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struct ngen_features
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{
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bool OnlyDynamicEnds; //if set the block endings aren't handled natively and only Dynamic block end type is used
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bool InterpreterFallback; //if set all the non-branch opcodes are handled with the ifb opcode
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};
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struct RuntimeBlockInfo;
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bool dec_DecodeBlock(RuntimeBlockInfo* rbi,u32 max_cycles);
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struct state_t
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{
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NextDecoderOperation NextOp;
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NextDecoderOperation DelayOp;
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NextDecoderOperation JumpOp;
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u32 JumpAddr;
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u32 NextAddr;
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BlockEndType BlockType;
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struct
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{
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bool FPR64; //64 bit FPU opcodes
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bool FSZ64; //64 bit FPU moves
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bool RoundToZero; //false -> Round to nearest.
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u32 rpc;
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bool is_delayslot;
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} cpu;
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ngen_features ngen;
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struct
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{
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bool has_readm;
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bool has_writem;
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bool has_fpu;
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} info;
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} ;
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