103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
#ifndef CREOLE_H
|
|
#define CREOLE_H
|
|
|
|
#include <limits.h>
|
|
#include <stddef.h>
|
|
|
|
#ifndef CREOLE_WORD
|
|
# define CREOLE_WORD unsigned int
|
|
# define CREOLE_WORD_MAX UINT_MAX
|
|
#endif
|
|
|
|
#define CREOLE_MAX_ARG 3
|
|
|
|
typedef CREOLE_WORD creole_word;
|
|
|
|
enum creole_opcode {
|
|
CREOLE_NOOP = 0,
|
|
CREOLE_PUSH = 1,
|
|
CREOLE_POP = 2,
|
|
CREOLE_ADD = 3,
|
|
CREOLE_MUL = 4,
|
|
CREOLE_DIV = 5,
|
|
CREOLE_JL = 6,
|
|
CREOLE_CLB = 7,
|
|
CREOLE_SYS = 8,
|
|
CREOLE_OPCODE_LEN
|
|
};
|
|
|
|
enum creole_word_flag {
|
|
CREOLE_IMMEDIATE,
|
|
CREOLE_REGISTER,
|
|
CREOLE_WORD_FLAGS_LEN
|
|
};
|
|
|
|
enum creole_compiler_ret {
|
|
CREOLE_COMPILE_OK,
|
|
CREOLE_OPCODE_READ_ERROR,
|
|
CREOLE_OPCODE_MALFORMED,
|
|
CREOLE_ARG_READ_ERROR,
|
|
CREOLE_ARG_MALFORMED,
|
|
CREOLE_LAST_READ_ERROR,
|
|
CREOLE_LAST_MALFORMED,
|
|
CREOLE_LABEL_OVERFLOW,
|
|
CREOLE_TYPE_ERROR,
|
|
CREOLE_COMPILE_CLEARED_INSTRUCTION,
|
|
CREOLE_PROGRAM_OVERFLOW,
|
|
CREOLE_COMPILE_RET_LEN
|
|
};
|
|
|
|
enum creole_run_ret {
|
|
CREOLE_STEP_CONTINUE,
|
|
CREOLE_STEP_SYSCALL,
|
|
CREOLE_STEP_STOP,
|
|
CREOLE_STACK_OVERFLOW,
|
|
CREOLE_STACK_UNDERFLOW,
|
|
CREOLE_RUN_LABEL_OVERFLOW,
|
|
CREOLE_REGISTER_OVERFLOW,
|
|
CREOLE_STEP_UNKNOWN_OPCODE,
|
|
CREOLE_RUN_RET_LEN
|
|
};
|
|
|
|
struct creole_ins {
|
|
enum creole_opcode opcode;
|
|
unsigned char w_flags[3];
|
|
creole_word w[3];
|
|
};
|
|
|
|
struct creole_env {
|
|
creole_word *reg;
|
|
size_t reglen;
|
|
|
|
size_t *lab;
|
|
size_t lablen;
|
|
|
|
creole_word *stk;
|
|
size_t stkptr, stklen;
|
|
|
|
struct creole_ins *prg;
|
|
size_t prgptr, prgend, prglen;
|
|
};
|
|
|
|
struct creole_reader {
|
|
unsigned char *p;
|
|
size_t left;
|
|
};
|
|
|
|
int creole_encode(creole_word i, unsigned encode_to, unsigned high_bits,
|
|
unsigned char buf[7]);
|
|
enum creole_compiler_ret
|
|
creole_parse_line(struct creole_ins *ins, struct creole_reader *r);
|
|
enum creole_compiler_ret
|
|
creole_compile(struct creole_env *env, struct creole_reader *r);
|
|
|
|
enum creole_run_ret creole_reg_write(struct creole_env *env, unsigned reg,
|
|
creole_word w);
|
|
enum creole_run_ret creole_reg_read(struct creole_env *env, unsigned reg,
|
|
creole_word *w);
|
|
enum creole_run_ret creole_push(struct creole_env *env, creole_word w);
|
|
enum creole_run_ret creole_pop(struct creole_env *env, creole_word *w);
|
|
enum creole_run_ret creole_step(struct creole_env *env, creole_word *sc);
|
|
|
|
#endif /* CREOLE_H */
|