ebc_disas.h

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// SPDX-FileCopyrightText: 2013-2015 Fedor Sakharov <fedor.sakharov@gmail.com>
// SPDX-License-Identifier: LGPL-3.0-only
 
#ifndef RZ_EBC_DISAS_H
#define RZ_EBC_DISAS_H
 
#include <stdint.h>
 
#define EBC_OPCODE_MASK     0x3F
#define EBC_MODIFIER_MASK   0xC0
#define EBC_OPERAND1_MASK   0x07
#define EBC_OPERAND2_MASK   (0x07 << 4)
#define EBC_OPERAND1_DIRECT 0x08
#define EBC_OPERAND2_DIRECT 0xA0
#define EBC_OPERAND1_INDX   0x01
#define EBC_OPERAND2_INDX   0x02
 
#define EBC_GET_OPCODE(byte) (byte & EBC_OPCODE_MASK)
 
#define EBC_INSTR_MAXLEN    32
#define EBC_OPERANDS_MAXLEN 32
 
#define EBC_NTH_BIT(n)    (1ULL << n)
#define EBC_N_BIT_MASK(n) (~(~0U << (n)))
#define EBC_GET_BIT(v, n) ((v >> n) & 1)
 
#define TEST_BIT(x, n) (x & (1 << n))
 
enum ebc_opcodes {
    EBC_BREAK = 0x00,
    EBC_JMP = 0x01,
    EBC_JMP8 = 0x02,
    EBC_CALL = 0x03,
    EBC_RET = 0x04,
    EBC_CMPEQ = 0x05,
    EBC_CMPLTE = 0x06,
    EBC_CMPGTE = 0x07,
    EBC_CMPULTE = 0x08,
    EBC_CMPUGTE = 0x09,
    EBC_NOT = 0x0A,
    EBC_NEG = 0x0B,
    EBC_ADD = 0x0C,
    EBC_SUB = 0x0D,
    EBC_MUL = 0x0E,
    EBC_MULU = 0x0F,
    EBC_DIV = 0x10,
    EBC_DIVU = 0x11,
    EBC_MOD = 0x12,
    EBC_MODU = 0x13,
    EBC_AND = 0x14,
    EBC_OR = 0x15,
    EBC_XOR = 0x16,
    EBC_SHL = 0x17,
    EBC_SHR = 0x18,
    EBC_ASHR = 0x19,
    EBC_EXTNDB = 0x1A,
    EBC_EXTNDW = 0x1B,
    EBC_EXTNDD = 0x1C,
    EBC_MOVBW = 0x1D,
    EBC_MOVWW = 0x1E,
    EBC_MOVDW = 0x1F,
    EBC_MOVQW = 0x20,
    EBC_MOVBD = 0x21,
    EBC_MOVWD = 0x22,
    EBC_MOVDD = 0x23,
    EBC_MOVQD = 0x24,
    EBC_MOVSNW = 0x25,
    EBC_MOVSND = 0x26,
    EBC_UNDEFINED = 0x27,
    EBC_MOVQQ = 0x28,
    EBC_LOADSP = 0x29,
    EBC_STORESP = 0x2A,
    EBC_PUSH = 0x2B,
    EBC_POP = 0x2C,
    EBC_CMPIEQ = 0x2D,
    EBC_CMPILTE = 0x2E,
    EBC_CMPIGTE = 0x2F,
    EBC_CMPIULTE = 0x30,
    EBC_CMPIUGTE = 0x31,
    EBC_MOVNW = 0x32,
    EBC_MOVND = 0x33,
    EBC_UNDEFINED2 = 0x34,
    EBC_PUSHN = 0x35,
    EBC_POPN = 0x36,
    EBC_MOVI = 0x37,
    EBC_MOVIN = 0x38,
    EBC_MOVREL = 0x39,
    EBC_COMMAND_NUM
};
 
typedef struct ebc_command {
    char instr[EBC_INSTR_MAXLEN];
    char operands[EBC_OPERANDS_MAXLEN];
} ebc_command_t;
 
int ebc_decode_command(const uint8_t *instr, ebc_command_t *cmd);
 
#endif /* EBC_DISAS_H */