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131 lines
3.3 KiB
C++
131 lines
3.3 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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// Additional copyrights go to Duddie (c) 2005 (duddie@walla.com)
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#pragma once
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#include <array>
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#include <cstddef>
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#include <string>
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#include "Core/DSP/DSPCommon.h"
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#include "Core/DSP/Jit/x64/DSPEmitter.h"
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namespace DSP
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{
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// The non-ADDR ones that end with _D are the opposite one - if the bit specify
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// ACC0, then ACC_D will be ACC1.
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// The values of these are very important.
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// For the reg ones, the value >> 8 is the base register.
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// & 0x80 means it's a "D".
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enum partype_t
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{
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P_NONE = 0x0000,
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P_VAL = 0x0001,
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P_IMM = 0x0002,
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P_MEM = 0x0003,
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P_STR = 0x0004,
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P_ADDR_I = 0x0005,
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P_ADDR_D = 0x0006,
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P_REG = 0x8000,
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P_REG04 = P_REG | 0x0400, // IX
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P_REG08 = P_REG | 0x0800,
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P_REG18 = P_REG | 0x1800,
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P_REGM18 = P_REG | 0x1810, // used in multiply instructions
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P_REG19 = P_REG | 0x1900,
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P_REGM19 = P_REG | 0x1910, // used in multiply instructions
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P_REG1A = P_REG | 0x1a80,
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// P_ACC = P_REG | 0x1c10, // used for global accum (gcdsptool's value)
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P_ACCL = P_REG | 0x1c00, // used for low part of accum
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P_REG1C = P_REG | 0x1c10, // gcdsptool calls this P_ACCLM
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P_ACCM = P_REG | 0x1e00, // used for mid part of accum
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// The following are not in gcdsptool
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P_ACCM_D = P_REG | 0x1e80,
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P_ACC = P_REG | 0x2000, // used for full accum.
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P_ACC_D = P_REG | 0x2080,
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P_AX = P_REG | 0x2200,
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P_REGS_MASK = 0x03f80, // gcdsptool's value = 0x01f80
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P_REF = P_REG | 0x4000,
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P_PRG = P_REF | P_REG,
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// The following seem like junk:
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// P_REG10 = P_REG | 0x1000,
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// P_AX_D = P_REG | 0x2280,
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};
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struct param2_t
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{
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partype_t type;
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u8 size;
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u8 loc;
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s8 lshift;
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u16 mask;
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};
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struct DSPOPCTemplate
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{
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using InterpreterFunction = void (*)(UDSPInstruction);
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using JITFunction = void (JIT::x64::DSPEmitter::*)(UDSPInstruction);
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const char* name;
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u16 opcode;
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u16 opcode_mask;
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InterpreterFunction intFunc;
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JITFunction jitFunc;
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u8 size;
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u8 param_count;
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param2_t params[8];
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bool extended;
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bool branch;
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bool uncond_branch;
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bool reads_pc;
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bool updates_sr;
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};
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typedef DSPOPCTemplate opc_t;
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// Opcodes
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extern const DSPOPCTemplate cw;
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constexpr size_t WRITEBACK_LOG_SIZE = 5;
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extern std::array<u16, WRITEBACK_LOG_SIZE> writeBackLog;
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extern std::array<int, WRITEBACK_LOG_SIZE> writeBackLogIdx;
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// Predefined labels
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struct pdlabel_t
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{
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u16 addr;
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const char* name;
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const char* description;
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};
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extern const std::array<pdlabel_t, 36> regnames;
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extern const std::array<pdlabel_t, 96> pdlabels;
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const char* pdname(u16 val);
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const char* pdregname(int val);
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const char* pdregnamelong(int val);
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void InitInstructionTable();
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void applyWriteBackLog();
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void zeroWriteBackLog();
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void zeroWriteBackLogPreserveAcc(u8 acc);
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// Used by the assembler and disassembler for info retrieval.
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const DSPOPCTemplate* FindOpInfoByOpcode(UDSPInstruction opcode);
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const DSPOPCTemplate* FindOpInfoByName(const std::string& name);
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const DSPOPCTemplate* FindExtOpInfoByOpcode(UDSPInstruction opcode);
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const DSPOPCTemplate* FindExtOpInfoByName(const std::string& name);
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// Used by the interpreter and JIT for instruction emulation
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const DSPOPCTemplate* GetOpTemplate(UDSPInstruction inst);
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const DSPOPCTemplate* GetExtOpTemplate(UDSPInstruction inst);
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} // namespace DSP
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