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#ifndef PARSE_H
#define PARSE_H
#include <stddef.h>
#include <stdbool.h>
#include "lex.h"
#include "instruction.h"
struct label {
char *name;
size_t byte_offset;
};
union immediate {
const char *label;
uint16_t value;
};
struct r_type {
enum OPER oper;
enum REG dest;
enum REG left;
enum REG right;
};
struct i_type {
enum OPER oper;
enum REG dest;
enum REG left;
bool imm_is_ident;
union immediate imm;
};
struct jr_type {
enum JCOND cond;
enum REG reg;
};
struct ji_type {
enum JCOND cond;
bool imm_is_ident;
union immediate imm;
};
struct b_type {
enum JCOND cond;
bool imm_is_ident;
union immediate imm;
};
struct instruction {
enum INST_TYPE type;
union instruction_u {
struct r_type r; /* catch-all R-Type */
struct i_type i; /* I-type on immediate literal */
struct jr_type jr; /* jump to register */
struct ji_type ji; /* jump to immediate */
struct b_type b; /* branch to immediate literal */
} inst;
};
int parse(const char *filename_local, FILE *fd, struct label **labels_local, size_t *labels_count_local, struct token *tokens, size_t tokens_count, struct instruction **instructions, size_t *instructions_count);
#endif /* PARSE_H */
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