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