agb/mgba-test-runner/c/include/mgba/internal/sm83/decoder.h

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2021-04-20 07:21:44 +10:00
/* Copyright (c) 2013-2017 Jeffrey Pfau
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef SM83_DECODER_H
#define SM83_DECODER_H
#include <mgba-util/common.h>
CXX_GUARD_START
enum SM83Condition {
SM83_COND_NONE = 0x0,
SM83_COND_C = 0x1,
SM83_COND_Z = 0x2,
SM83_COND_NC = 0x3,
SM83_COND_NZ = 0x4
};
enum SM83Mnemonic {
SM83_MN_ILL = 0,
SM83_MN_ADC,
SM83_MN_ADD,
SM83_MN_AND,
SM83_MN_BIT,
SM83_MN_CALL,
SM83_MN_CCF,
SM83_MN_CP,
SM83_MN_CPL,
SM83_MN_DAA,
SM83_MN_DEC,
SM83_MN_DI,
SM83_MN_EI,
SM83_MN_HALT,
SM83_MN_INC,
SM83_MN_JP,
SM83_MN_JR,
SM83_MN_LD,
SM83_MN_NOP,
SM83_MN_OR,
SM83_MN_POP,
SM83_MN_PUSH,
SM83_MN_RES,
SM83_MN_RET,
SM83_MN_RETI,
SM83_MN_RL,
SM83_MN_RLC,
SM83_MN_RR,
SM83_MN_RRC,
SM83_MN_RST,
SM83_MN_SBC,
SM83_MN_SCF,
SM83_MN_SET,
SM83_MN_SLA,
SM83_MN_SRA,
SM83_MN_SRL,
SM83_MN_STOP,
SM83_MN_SUB,
SM83_MN_SWAP,
SM83_MN_XOR,
SM83_MN_MAX
};
enum SM83Register {
SM83_REG_B = 1,
SM83_REG_C,
SM83_REG_D,
SM83_REG_E,
SM83_REG_H,
SM83_REG_L,
SM83_REG_A,
SM83_REG_F,
SM83_REG_BC,
SM83_REG_DE,
SM83_REG_HL,
SM83_REG_AF,
SM83_REG_SP,
SM83_REG_PC
};
enum {
SM83_OP_FLAG_IMPLICIT = 1,
SM83_OP_FLAG_MEMORY = 2,
SM83_OP_FLAG_INCREMENT = 4,
SM83_OP_FLAG_DECREMENT = 8,
SM83_OP_FLAG_RELATIVE = 16,
};
struct SM83Operand {
uint8_t reg;
uint8_t flags;
uint16_t immediate;
};
struct SM83InstructionInfo {
uint8_t opcode[3];
uint8_t opcodeSize;
struct SM83Operand op1;
struct SM83Operand op2;
unsigned mnemonic;
unsigned condition;
};
size_t SM83Decode(uint8_t opcode, struct SM83InstructionInfo* info);
int SM83Disassemble(struct SM83InstructionInfo* info, uint16_t pc, char* buffer, int blen);
CXX_GUARD_END
#endif