#define USER_ENV 32

#define CARD_OFF_ENV      1 /* for compiling set-slot */
/* 2 is unused */         
#define NAMESTACK_ENV     3 /* used by library only */
#define GLOBAL_ENV        4
#define BREAK_ENV         5
#define CATCHSTACK_ENV    6 /* used by library only */
#define CPU_ENV           7
#define BOOT_ENV          8
#define CALLCC_1_ENV      9 /* used by library only */
#define ARGS_ENV          10
#define OS_ENV            11
#define ERROR_ENV         12 /* a marker consed onto kernel errors */
#define IN_ENV            13
#define OUT_ENV           14
#define GEN_ENV           15 /* set to gen_count */
#define IMAGE_ENV         16 /* image name */
#define CELL_SIZE_ENV     17 /* sizeof(CELL) */
#define COMPILED_BASE_ENV 18 /* base of code heap */

/* TAGGED user environment data; see getenv/setenv prims */
DLLEXPORT CELL userenv[USER_ENV];

INLINE CELL dpop(void)
{
	CELL value = get(ds);
	ds -= CELLS;
	return value;
}

INLINE void drepl(CELL top)
{
	put(ds,top);
}

INLINE void dpush(CELL top)
{
	ds += CELLS;
	put(ds,top);
}

INLINE CELL dpeek(void)
{
	return get(ds);
}

INLINE CELL dpeek2(void)
{
	return get(ds - CELLS);
}

INLINE CELL cpop(void)
{
	CELL value = get(cs);
	cs -= CELLS;
	return value;
}

INLINE void cpush(CELL top)
{
	cs += CELLS;
	put(cs,top);
}

INLINE void call(CELL quot)
{
	/* tail call optimization */
	if(callframe != F)
	{
		cpush(executing);
		cpush(callframe);
	}

	callframe = quot;
}

void handle_error();
void run(void);
void run_toplevel(void);
DLLEXPORT void run_callback(CELL quot);
void platform_run(void);
void undefined(F_WORD *word);
void docol(F_WORD *word);
void dosym(F_WORD *word);
void primitive_execute(void);
void primitive_call(void);
void primitive_ifte(void);
void primitive_dispatch(void);
void primitive_getenv(void);
void primitive_setenv(void);