#ifndef _AO_LISP_H_
#define _AO_LISP_H_
-#include <stdlib.h>
-
-#if !defined(AO_LISP_TEST) && !defined(AO_LISP_MAKE_CONST)
-#include <ao.h>
-#define AO_LISP_ALTOS 1
-#define abort() ao_panic(1)
-#endif
-
#include <stdint.h>
#include <string.h>
-#include <stdio.h>
+//#include <stdio.h>
+#include <ao_lisp_os.h>
+
+typedef uint16_t ao_poly;
+typedef int16_t ao_signed_poly;
+
+#ifdef AO_LISP_SAVE
+
+struct ao_lisp_os_save {
+ ao_poly atoms;
+ ao_poly globals;
+ uint16_t const_checksum;
+ uint16_t const_checksum_inv;
+};
+
+#define AO_LISP_POOL_EXTRA (sizeof(struct ao_lisp_os_save))
+#define AO_LISP_POOL ((int) (AO_LISP_POOL_TOTAL - AO_LISP_POOL_EXTRA))
+
+int
+ao_lisp_os_save(void);
+
+int
+ao_lisp_os_restore_save(struct ao_lisp_os_save *save, int offset);
+
+int
+ao_lisp_os_restore(void);
+
+#endif
#ifdef AO_LISP_MAKE_CONST
#define AO_LISP_POOL_CONST 16384
extern uint8_t ao_lisp_const[AO_LISP_POOL_CONST];
#define ao_lisp_pool ao_lisp_const
#define AO_LISP_POOL AO_LISP_POOL_CONST
-#define _ao_lisp_atom_quote ao_lisp_atom_poly(ao_lisp_atom_intern("quote"))
-#define _ao_lisp_atom_set ao_lisp_atom_poly(ao_lisp_atom_intern("set"))
+
+#define _atom(n) ao_lisp_atom_poly(ao_lisp_atom_intern(n))
+
+#define _ao_lisp_atom_quote _atom("quote")
+#define _ao_lisp_atom_set _atom("set")
+#define _ao_lisp_atom_setq _atom("setq")
+#define _ao_lisp_atom_t _atom("t")
+#define _ao_lisp_atom_car _atom("car")
+#define _ao_lisp_atom_cdr _atom("cdr")
+#define _ao_lisp_atom_cons _atom("cons")
+#define _ao_lisp_atom_last _atom("last")
+#define _ao_lisp_atom_length _atom("length")
+#define _ao_lisp_atom_cond _atom("cond")
+#define _ao_lisp_atom_lambda _atom("lambda")
+#define _ao_lisp_atom_led _atom("led")
+#define _ao_lisp_atom_delay _atom("delay")
+#define _ao_lisp_atom_pack _atom("pack")
+#define _ao_lisp_atom_unpack _atom("unpack")
+#define _ao_lisp_atom_flush _atom("flush")
+#define _ao_lisp_atom_eval _atom("eval")
+#define _ao_lisp_atom_read _atom("read")
+#define _ao_lisp_atom_eof _atom("eof")
+#define _ao_lisp_atom_save _atom("save")
+#define _ao_lisp_atom_restore _atom("restore")
#else
#include "ao_lisp_const.h"
-#define AO_LISP_POOL 1024
-extern uint8_t ao_lisp_pool[AO_LISP_POOL];
+#ifndef AO_LISP_POOL
+#define AO_LISP_POOL 3072
+#endif
+extern uint8_t ao_lisp_pool[AO_LISP_POOL + AO_LISP_POOL_EXTRA];
#endif
/* Primitive types */
#define AO_LISP_ATOM 4
#define AO_LISP_BUILTIN 5
#define AO_LISP_FRAME 6
-#define AO_LISP_NUM_TYPE 7
+#define AO_LISP_LAMBDA 7
+#define AO_LISP_NUM_TYPE 8
#define AO_LISP_NIL 0
#define AO_LISP_OOM 0x01
#define AO_LISP_DIVIDE_BY_ZERO 0x02
#define AO_LISP_INVALID 0x04
+#define AO_LISP_UNDEFINED 0x08
+#define AO_LISP_EOF 0x10
extern uint8_t ao_lisp_exception;
-typedef uint16_t ao_poly;
-
static inline int
ao_lisp_is_const(ao_poly poly) {
return poly & AO_LISP_CONST;
}
-#define AO_LISP_POOL_BASE (ao_lisp_pool - 4)
-#define AO_LISP_CONST_BASE (ao_lisp_const - 4)
-
#define AO_LISP_IS_CONST(a) (ao_lisp_const <= ((uint8_t *) (a)) && ((uint8_t *) (a)) < ao_lisp_const + AO_LISP_POOL_CONST)
#define AO_LISP_IS_POOL(a) (ao_lisp_pool <= ((uint8_t *) (a)) && ((uint8_t *) (a)) < ao_lisp_pool + AO_LISP_POOL)
-static inline void *
-ao_lisp_ref(ao_poly poly) {
- if (poly == AO_LISP_NIL)
- return NULL;
- if (poly & AO_LISP_CONST)
- return (void *) (AO_LISP_CONST_BASE + (poly & AO_LISP_REF_MASK));
- return (void *) (AO_LISP_POOL_BASE + (poly & AO_LISP_REF_MASK));
-}
+void *
+ao_lisp_ref(ao_poly poly);
-static inline ao_poly
-ao_lisp_poly(const void *addr, ao_poly type) {
- const uint8_t *a = addr;
- if (a == NULL)
- return AO_LISP_NIL;
- if (AO_LISP_IS_CONST(a))
- return AO_LISP_CONST | (a - AO_LISP_CONST_BASE) | type;
- return (a - AO_LISP_POOL_BASE) | type;
-}
+ao_poly
+ao_lisp_poly(const void *addr, ao_poly type);
struct ao_lisp_type {
- void (*mark)(void *addr);
int (*size)(void *addr);
+ void (*mark)(void *addr);
void (*move)(void *addr);
+ char name[];
};
struct ao_lisp_cons {
};
struct ao_lisp_frame {
- uint8_t num;
- uint8_t readonly;
- ao_poly next;
+ uint8_t type;
+ uint8_t _num;
+ ao_poly prev;
struct ao_lisp_val vals[];
};
+#define AO_LISP_FRAME_NUM_MASK 0x7f
+
+/* Set when the frame escapes the lambda */
+#define AO_LISP_FRAME_MARK 0x80
+
+static inline int ao_lisp_frame_num(struct ao_lisp_frame *f) {
+ if (f->_num == 0xff)
+ ao_lisp_abort();
+ return f->_num & AO_LISP_FRAME_NUM_MASK;
+}
+
+static inline int ao_lisp_frame_marked(struct ao_lisp_frame *f) {
+ if (f->_num == 0xff)
+ ao_lisp_abort();
+ return f->_num & AO_LISP_FRAME_MARK;
+}
+
static inline struct ao_lisp_frame *
ao_lisp_poly_frame(ao_poly poly) {
+ struct ao_lisp_frame *frame = ao_lisp_ref(poly);
+ if (frame && frame->_num == 0xff)
+ ao_lisp_abort();
return ao_lisp_ref(poly);
}
return ao_lisp_poly(frame, AO_LISP_OTHER);
}
-#define AO_LISP_LAMBDA 0
-#define AO_LISP_NLAMBDA 1
-#define AO_LISP_MACRO 2
-#define AO_LISP_LEXPR 3
+enum eval_state {
+ eval_sexpr, /* Evaluate an sexpr */
+ eval_val, /* Value computed */
+ eval_formal, /* Formal computed */
+ eval_exec, /* Start a lambda evaluation */
+ eval_cond, /* Start next cond clause */
+ eval_cond_test, /* Check cond condition */
+ eval_progn, /* Start next progn entry */
+ eval_while, /* Start while condition */
+ eval_while_test, /* Check while condition */
+ eval_macro, /* Finished with macro generation */
+};
+
+struct ao_lisp_stack {
+ uint8_t state; /* enum eval_state */
+ ao_poly prev; /* previous stack frame */
+ ao_poly sexprs; /* expressions to evaluate */
+ ao_poly values; /* values computed */
+ ao_poly values_tail; /* end of the values list for easy appending */
+ ao_poly frame; /* current lookup frame */
+ ao_poly list; /* most recent function call */
+};
+
+static inline struct ao_lisp_stack *
+ao_lisp_poly_stack(ao_poly p)
+{
+ return ao_lisp_ref(p);
+}
+
+static inline ao_poly
+ao_lisp_stack_poly(struct ao_lisp_stack *stack)
+{
+ return ao_lisp_poly(stack, AO_LISP_OTHER);
+}
+
+extern struct ao_lisp_stack *ao_lisp_stack;
+extern struct ao_lisp_stack *ao_lisp_stack_free_list;
+extern ao_poly ao_lisp_v;
+
+#define AO_LISP_FUNC_LAMBDA 0
+#define AO_LISP_FUNC_NLAMBDA 1
+#define AO_LISP_FUNC_MACRO 2
+#define AO_LISP_FUNC_LEXPR 3
+
+#define AO_LISP_FUNC_FREE_ARGS 0x80
+#define AO_LISP_FUNC_MASK 0x7f
+
+#define AO_LISP_FUNC_F_LAMBDA (AO_LISP_FUNC_FREE_ARGS | AO_LISP_FUNC_LAMBDA)
+#define AO_LISP_FUNC_F_NLAMBDA (AO_LISP_FUNC_FREE_ARGS | AO_LISP_FUNC_NLAMBDA)
+#define AO_LISP_FUNC_F_MACRO (AO_LISP_FUNC_FREE_ARGS | AO_LISP_FUNC_MACRO)
+#define AO_LISP_FUNC_F_LEXPR (AO_LISP_FUNC_FREE_ARGS | AO_LISP_FUNC_LEXPR)
struct ao_lisp_builtin {
uint8_t type;
};
enum ao_lisp_builtin_id {
+ builtin_eval,
+ builtin_read,
+ builtin_lambda,
+ builtin_lexpr,
+ builtin_nlambda,
+ builtin_macro,
builtin_car,
builtin_cdr,
builtin_cons,
+ builtin_last,
+ builtin_length,
builtin_quote,
builtin_set,
builtin_setq,
+ builtin_cond,
+ builtin_progn,
+ builtin_while,
builtin_print,
+ builtin_patom,
builtin_plus,
builtin_minus,
builtin_times,
builtin_divide,
builtin_mod,
- builtin_last
+ builtin_equal,
+ builtin_less,
+ builtin_greater,
+ builtin_less_equal,
+ builtin_greater_equal,
+ builtin_pack,
+ builtin_unpack,
+ builtin_flush,
+ builtin_delay,
+ builtin_led,
+ builtin_save,
+ builtin_restore,
+ _builtin_last
};
typedef ao_poly (*ao_lisp_func_t)(struct ao_lisp_cons *cons);
-extern ao_lisp_func_t ao_lisp_builtins[];
+extern const ao_lisp_func_t ao_lisp_builtins[];
static inline ao_lisp_func_t
ao_lisp_func(struct ao_lisp_builtin *b)
return ao_lisp_builtins[b->func];
}
+struct ao_lisp_lambda {
+ uint8_t type;
+ uint8_t args;
+ ao_poly code;
+ ao_poly frame;
+};
+
+static inline struct ao_lisp_lambda *
+ao_lisp_poly_lambda(ao_poly poly)
+{
+ return ao_lisp_ref(poly);
+}
+
+static inline ao_poly
+ao_lisp_lambda_poly(struct ao_lisp_lambda *lambda)
+{
+ return ao_lisp_poly(lambda, AO_LISP_OTHER);
+}
+
static inline void *
ao_lisp_poly_other(ao_poly poly) {
return ao_lisp_ref(poly);
}
static inline int
-ao_lisp_mem_round(int size)
+ao_lisp_size_round(int size)
{
return (size + 3) & ~3;
}
+static inline int
+ao_lisp_size(const struct ao_lisp_type *type, void *addr)
+{
+ return ao_lisp_size_round(type->size(addr));
+}
+
#define AO_LISP_OTHER_POLY(other) ((ao_poly)(other) + AO_LISP_OTHER)
+static inline int ao_lisp_poly_base_type(ao_poly poly) {
+ return poly & AO_LISP_TYPE_MASK;
+}
+
static inline int ao_lisp_poly_type(ao_poly poly) {
int type = poly & AO_LISP_TYPE_MASK;
if (type == AO_LISP_OTHER)
static inline int
ao_lisp_poly_int(ao_poly poly)
{
- return (int) poly >> AO_LISP_TYPE_SHIFT;
+ return (int) ((ao_signed_poly) poly >> AO_LISP_TYPE_SHIFT);
}
static inline ao_poly
ao_lisp_int_poly(int i)
{
- return ((ao_poly) i << 2) + AO_LISP_INT;
+ return ((ao_poly) i << 2) | AO_LISP_INT;
}
static inline char *
}
/* memory functions */
-void
+
+extern int ao_lisp_collects[2];
+extern int ao_lisp_freed[2];
+extern int ao_lisp_loops[2];
+
+/* returns 1 if the object was already marked */
+int
ao_lisp_mark(const struct ao_lisp_type *type, void *addr);
/* returns 1 if the object was already marked */
int
-ao_lisp_mark_memory(void *addr, int size);
+ao_lisp_mark_memory(const struct ao_lisp_type *type, void *addr);
void *
ao_lisp_move_map(void *addr);
-void *
-ao_lisp_move(const struct ao_lisp_type *type, void *addr);
+/* returns 1 if the object was already moved */
+int
+ao_lisp_move(const struct ao_lisp_type *type, void **ref);
-/* returns NULL if the object was already moved */
-void *
-ao_lisp_move_memory(void *addr, int size);
+/* returns 1 if the object was already moved */
+int
+ao_lisp_move_memory(const struct ao_lisp_type *type, void **ref);
void *
ao_lisp_alloc(int size);
-void
-ao_lisp_collect(void);
+#define AO_LISP_COLLECT_FULL 1
+#define AO_LISP_COLLECT_INCREMENTAL 0
int
-ao_lisp_root_add(const struct ao_lisp_type *type, void *addr);
+ao_lisp_collect(uint8_t style);
+
+void
+ao_lisp_cons_stash(int id, struct ao_lisp_cons *cons);
+
+struct ao_lisp_cons *
+ao_lisp_cons_fetch(int id);
void
-ao_lisp_root_clear(void *addr);
+ao_lisp_string_stash(int id, char *string);
+
+char *
+ao_lisp_string_fetch(int id);
+
+void
+ao_lisp_poly_stash(int id, ao_poly poly);
+
+ao_poly
+ao_lisp_poly_fetch(int id);
/* cons */
extern const struct ao_lisp_type ao_lisp_cons_type;
struct ao_lisp_cons *
ao_lisp_cons_cons(ao_poly car, struct ao_lisp_cons *cdr);
+extern struct ao_lisp_cons *ao_lisp_cons_free_list;
+
+void
+ao_lisp_cons_free(struct ao_lisp_cons *cons);
+
void
ao_lisp_cons_print(ao_poly);
+void
+ao_lisp_cons_patom(ao_poly);
+
+int
+ao_lisp_cons_length(struct ao_lisp_cons *cons);
+
/* string */
extern const struct ao_lisp_type ao_lisp_string_type;
-char *
-ao_lisp_string_new(int len);
-
char *
ao_lisp_string_copy(char *a);
char *
ao_lisp_string_cat(char *a, char *b);
+ao_poly
+ao_lisp_string_pack(struct ao_lisp_cons *cons);
+
+ao_poly
+ao_lisp_string_unpack(char *a);
+
void
ao_lisp_string_print(ao_poly s);
+void
+ao_lisp_string_patom(ao_poly s);
+
/* atom */
extern const struct ao_lisp_type ao_lisp_atom_type;
-extern struct ao_lisp_atom *ao_lisp_atoms;
-
-void
-ao_lisp_atom_init(void);
+extern struct ao_lisp_atom *ao_lisp_atoms;
+extern struct ao_lisp_frame *ao_lisp_frame_global;
+extern struct ao_lisp_frame *ao_lisp_frame_current;
void
ao_lisp_atom_print(ao_poly a);
struct ao_lisp_atom *
ao_lisp_atom_intern(char *name);
+ao_poly *
+ao_lisp_atom_ref(struct ao_lisp_frame *frame, ao_poly atom);
+
ao_poly
ao_lisp_atom_get(ao_poly atom);
ao_lisp_int_print(ao_poly i);
/* prim */
-ao_poly
+void
ao_lisp_poly_print(ao_poly p);
void
-ao_lisp_poly_mark(ao_poly p);
+ao_lisp_poly_patom(ao_poly p);
-ao_poly
-ao_lisp_poly_move(ao_poly p);
+int
+ao_lisp_poly_mark(ao_poly p, uint8_t note_cons);
+
+/* returns 1 if the object has already been moved */
+int
+ao_lisp_poly_move(ao_poly *p, uint8_t note_cons);
/* eval */
+
+void
+ao_lisp_eval_clear_globals(void);
+
+int
+ao_lisp_eval_restart(void);
+
ao_poly
ao_lisp_eval(ao_poly p);
+ao_poly
+ao_lisp_set_cond(struct ao_lisp_cons *cons);
+
/* builtin */
void
ao_lisp_builtin_print(ao_poly b);
extern const struct ao_lisp_type ao_lisp_builtin_type;
+/* Check argument count */
+ao_poly
+ao_lisp_check_argc(ao_poly name, struct ao_lisp_cons *cons, int min, int max);
+
+/* Check argument type */
+ao_poly
+ao_lisp_check_argt(ao_poly name, struct ao_lisp_cons *cons, int argc, int type, int nil_ok);
+
+/* Fetch an arg (nil if off the end) */
+ao_poly
+ao_lisp_arg(struct ao_lisp_cons *cons, int argc);
+
+char *
+ao_lisp_args_name(uint8_t args);
+
/* read */
+extern struct ao_lisp_cons *ao_lisp_read_cons;
+extern struct ao_lisp_cons *ao_lisp_read_cons_tail;
+extern struct ao_lisp_cons *ao_lisp_read_stack;
+
ao_poly
ao_lisp_read(void);
/* frame */
extern const struct ao_lisp_type ao_lisp_frame_type;
-int
-ao_lisp_frame_set(struct ao_lisp_frame *frame, ao_poly atom, ao_poly val);
+#define AO_LISP_FRAME_FREE 4
+
+extern struct ao_lisp_frame *ao_lisp_frame_free_list[AO_LISP_FRAME_FREE];
ao_poly
-ao_lisp_frame_get(struct ao_lisp_frame *frame, ao_poly atom);
+ao_lisp_frame_mark(struct ao_lisp_frame *frame);
-struct ao_lisp_frame *
-ao_lisp_frame_new(int num, int readonly);
+ao_poly *
+ao_lisp_frame_ref(struct ao_lisp_frame *frame, ao_poly atom);
struct ao_lisp_frame *
-ao_lisp_frame_add(struct ao_lisp_frame *frame, ao_poly atom, ao_poly val);
+ao_lisp_frame_new(int num);
+
+void
+ao_lisp_frame_free(struct ao_lisp_frame *frame);
+
+int
+ao_lisp_frame_add(struct ao_lisp_frame **frame, ao_poly atom, ao_poly val);
+
+void
+ao_lisp_frame_print(ao_poly p);
+
+/* lambda */
+extern const struct ao_lisp_type ao_lisp_lambda_type;
+
+struct ao_lisp_lambda *
+ao_lisp_lambda_new(ao_poly cons);
+
+void
+ao_lisp_lambda_print(ao_poly lambda);
+
+ao_poly
+ao_lisp_lambda(struct ao_lisp_cons *cons);
+
+ao_poly
+ao_lisp_lexpr(struct ao_lisp_cons *cons);
+
+ao_poly
+ao_lisp_nlambda(struct ao_lisp_cons *cons);
+
+ao_poly
+ao_lisp_macro(struct ao_lisp_cons *cons);
+
+ao_poly
+ao_lisp_lambda_eval(void);
+
+/* save */
+
+ao_poly
+ao_lisp_save(struct ao_lisp_cons *cons);
+
+ao_poly
+ao_lisp_restore(struct ao_lisp_cons *cons);
+
+/* error */
+
+extern const struct ao_lisp_type ao_lisp_stack_type;
+
+void
+ao_lisp_stack_print(void);
+
+ao_poly
+ao_lisp_error(int error, char *format, ...);
+
+/* debugging macros */
+
+#if DBG_EVAL
+#define DBG_CODE 1
+int ao_lisp_stack_depth;
+#define DBG_DO(a) a
+#define DBG_INDENT() do { int _s; for(_s = 0; _s < ao_lisp_stack_depth; _s++) printf(" "); } while(0)
+#define DBG_IN() (++ao_lisp_stack_depth)
+#define DBG_OUT() (--ao_lisp_stack_depth)
+#define DBG_RESET() (ao_lisp_stack_depth = 0)
+#define DBG(...) printf(__VA_ARGS__)
+#define DBGI(...) do { DBG("%4d: ", __LINE__); DBG_INDENT(); DBG(__VA_ARGS__); } while (0)
+#define DBG_CONS(a) ao_lisp_cons_print(ao_lisp_cons_poly(a))
+#define DBG_POLY(a) ao_lisp_poly_print(a)
+#define OFFSET(a) ((a) ? (int) ((uint8_t *) a - ao_lisp_pool) : -1)
+#define DBG_STACK() ao_lisp_stack_print()
+static inline void
+ao_lisp_frames_dump(void)
+{
+ struct ao_lisp_stack *s;
+ DBGI(".. current frame: "); DBG_POLY(ao_lisp_frame_poly(ao_lisp_frame_current)); DBG("\n");
+ for (s = ao_lisp_stack; s; s = ao_lisp_poly_stack(s->prev)) {
+ DBGI(".. stack frame: "); DBG_POLY(s->frame); DBG("\n");
+ }
+}
+#define DBG_FRAMES() ao_lisp_frames_dump()
+#else
+#define DBG_DO(a)
+#define DBG_INDENT()
+#define DBG_IN()
+#define DBG_OUT()
+#define DBG(...)
+#define DBGI(...)
+#define DBG_CONS(a)
+#define DBG_POLY(a)
+#define DBG_RESET()
+#define DBG_STACK()
+#define DBG_FRAMES()
+#endif
+
+#define DBG_MEM 0
+#define DBG_MEM_START 1
+
+#if DBG_MEM
+
+#include <assert.h>
+extern int dbg_move_depth;
+#define MDBG_DUMP 1
+#define MDBG_OFFSET(a) ((int) ((uint8_t *) (a) - ao_lisp_pool))
+
+extern int dbg_mem;
+
+#define MDBG_DO(a) a
+#define MDBG_MOVE(...) do { if (dbg_mem) { int d; for (d = 0; d < dbg_move_depth; d++) printf (" "); printf(__VA_ARGS__); } } while (0)
+#define MDBG_MORE(...) do { if (dbg_mem) printf(__VA_ARGS__); } while (0)
+#define MDBG_MOVE_IN() (dbg_move_depth++)
+#define MDBG_MOVE_OUT() (assert(--dbg_move_depth >= 0))
+
+#else
+
+#define MDBG_DO(a)
+#define MDBG_MOVE(...)
+#define MDBG_MORE(...)
+#define MDBG_MOVE_IN()
+#define MDBG_MOVE_OUT()
+
+#endif
#endif /* _AO_LISP_H_ */
projects / fw / altos / blobdiff