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