factor/vm/image.h

#define IMAGE_MAGIC 0x0f0e0d0c
#define IMAGE_VERSION 2

typedef struct {
	CELL magic;
	CELL version;
	/* all pointers in the image file are relocated from
	   relocation_base to here when the image is loaded */
	CELL data_relocation_base;
	/* tagged pointer to bootstrap quotation */
	CELL boot;
	/* tagged pointer to global namespace */
	CELL global;
	/* tagged pointer to t singleton */
	CELL t;
	/* tagged pointer to bignum 0 */
	CELL bignum_zero;
	/* tagged pointer to bignum 1 */
	CELL bignum_pos_one;
	/* tagged pointer to bignum -1 */
	CELL bignum_neg_one;
	/* size of heap */
	CELL data_size;
	/* size of code heap */
	CELL code_size;
	/* code relocation base */
	CELL code_relocation_base;
} HEADER;

void init_objects(HEADER *h);
void load_image(const char* file);
bool save_image(const char* file);
void primitive_save_image(void);

/* relocation base of currently loaded image's data heap */
CELL data_relocation_base;

INLINE void data_fixup(CELL *cell)
{
	if(TAG(*cell) != FIXNUM_TYPE && *cell != F)
		*cell += (tenured.base - data_relocation_base);
}

CELL code_relocation_base;

INLINE void code_fixup(CELL *cell)
{
	*cell += (compiling.base - code_relocation_base);
}

void relocate_data();
void relocate_code();