st/lama_byterun
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file parser, file merge, callf command remove, SM fixes. todo: fix interpreter and analyzer with new algorithm

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ProgramSnail 2025-02-23 15:10:22 +03:00
parent 51381aea43
commit 343a21ee2d
8 changed files with 256 additions and 77 deletions
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32
byterun/include/utils.h
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@ -7,17 +7,24 @@
#include "../../runtime/runtime.h"
#include "../../runtime/runtime_common.h"
typedef struct {
uint offset;
char label[0];
} Subst;
/* The unpacked representation of bytecode file */
typedef struct {
uint main_offset; /* offset of the function 'main' */
char *string_ptr; /* A pointer to the beginning of the string table */
int *imports_ptr; /* A pointer to the beginning of imports table */
int *public_ptr; /* A pointer to the beginning of publics table */
char *code_ptr; /* A pointer to the bytecode itself */
int *global_ptr; /* A pointer to the global area */
int code_size; /* The size (in bytes) of code */
uint main_offset; /* offset of the function 'main' */
char *string_ptr; /* A pointer to the beginning of the string table */
int *imports_ptr; /* A pointer to the beginning of imports table */
int *public_ptr; /* A pointer to the beginning of publics table */
char *code_ptr; /* A pointer to the bytecode itself */
void **global_ptr; /* A pointer to the global area */
char *substs_ptr; /* A pointer to the substs area */
int code_size; /* The size (in bytes) of code */
uint stringtab_size; /* The size (in bytes) of the string table */
uint global_area_size; /* The size (in words) of global area */
uint substs_area_size; /* number of required address substitutions */
uint imports_number; /* The number of imports */
uint public_symbols_number; /* The number of public symbols */
char buffer[0];
@ -64,6 +71,10 @@ static inline size_t get_public_offset_unsafe(const Bytefile *bf, size_t i) {
// read from ip
static inline void ip_write_int_unsafe(char *ip, int32_t x) {
*((int32_t *)ip) = x;
}
static inline uint16_t ip_read_half_int_unsafe(char **ip) {
*ip += sizeof(uint16_t);
return *(uint16_t *)((*ip) - sizeof(uint16_t));
@ -124,6 +135,13 @@ static inline size_t get_public_offset_safe(const Bytefile *f, size_t i) {
// read from ip
static inline void ip_write_int_safe(char *ip, int32_t x, const Bytefile *bf) {
if (ip + sizeof(int32_t) > bf->code_ptr + bf->code_size) {
failure("last command is invalid, int parameter can not be read\n");
}
ip_write_int_unsafe(ip, x);
}
static inline uint16_t ip_read_half_int_safe(char **ip, const Bytefile *bf) {
if (*ip + sizeof(uint16_t) > bf->code_ptr + bf->code_size) {
failure("last command is invalid, int parameter can not be read\n");