container

Container file format

Constants

#define MAGIC_NUMBER 0xAFFEAFFE
#define CONTAINER_VERSION 1
#define CONTENT_VERSION 1
#define HEADER_SIZE 24
#define SYMBOL_NAME_SIZE 512
#define SYMBOL_SIZE 516
#define BYTECODE_SIZE 5

Format

struct container_header {
  unsigned int magic_number;
  unsigned int container_version;
  unsigned int content_version;
  size_t symbol_segment_size;
  size_t external_symbol_segment_size;
  size_t text_segment_size;
};

struct container_symbol {
  int addr;
  char name[SYMBOL_NAME_SIZE];
};


struct container_external_symbol {
  char name[SYMBOL_NAME_SIZE];
};

struct container_bytecode {
  char instruction;
  int argument;
};

Binary Layout

+--------------+-------------------+-----------------+
+ MAGIC NUMBER | CONTAINER VERSION | CONTENT VERSION +
+--------------+-------------------+-----------------+
+ SYMBOL SIZE  |   EXTERNAL SIZE   |    TEXT SIZE    +
+--------------+-------------------+-----------------+
+                                                    +
+                  SYMBOL SEGMENT                    +
+                                                    +
+----------------------------------------------------+
+                                                    +
+              EXTERNAL SYMBOL  SEGMENT              +
+                                                    +
+----------------------------------------------------+
+                                                    +
+                   TEXT  SEGMENT                    +
+                                                    +
+----------------------------------------------------+