kuma/opcodes.h at master · christopherredden/kuma · GitHub

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#include <stdint.h>

#ifndef KUMA_OPCODES_H
#define KUMA_OPCODES_H

/*

    Opcode: 8 bits
    'A': 8 bits
    'B': 8 bits
    'C': 8 bits
    'Bx': 16 bits ('B' and 'C')

 */

typedef uint32_t kuma_instruction;

#define SIZE_OP 8
#define SIZE_A 8
#define SIZE_B 8
#define SIZE_C 8
#define SIZE_Bx (SIZE_B + SIZE_C)

#define POS_OP 0
#define POS_A (POS_OP + SIZE_OP)
#define POS_B (POS_A + SIZE_A)
#define POS_C (POS_B + SIZE_B)
#define POS_Bx POS_B

#define GET_OPCODE(i) ((kuma_opcode)(i>>POS_OP)) & (~(0xFFFFFF<<SIZE_OP))
#define GET_ARG_A(i) ((uint32_t)(i>>POS_A)) & (~(0xFFFFFF<<SIZE_A))
#define GET_ARG_B(i) ((uint32_t)(i>>POS_B)) & (~(0xFFFFFF<<SIZE_B))
#define GET_ARG_C(i) ((uint32_t)(i>>POS_C)) & (~(0xFFFFFF<<SIZE_C))
#define GET_ARG_Bx(i) ((uint32_t)(i>>POS_Bx)) & (~(0xFFFFFF<<SIZE_Bx))

#define CREATE_ABC(o,a,b,c)	((((kuma_opcode)o)<<POS_OP) \
			| (((uint8_t)a)<<POS_A) \
			| (((uint8_t)b)<<POS_B) \
			| (((uint8_t)c)<<POS_C))

#define CREATE_ABx(o,a,bx)	((((kuma_opcode)o)<<POS_OP) \
			| (((uint8_t)a)<<POS_A) \
			| (((uint16_t)bx)<<POS_Bx))

typedef enum
{
    OP_LOADCONSTANT = 0,
    OP_LOADBOOL,
    OP_MOVE,
    OP_ADD,
    OP_SUB,
    OP_MUL,
    OP_DIV,
    OP_JMP,
    OP_EQ,
    OP_LT,
    OP_LEQ,
    OP_GT,
    OP_GEQ,
	OP_CALL,
    OP_NOP,
    OP_HALT,
    OP_EOF,

} kuma_opcode;

int kuma_opcodes_dump(kuma_instruction *ops);

#endif