vm/vm.hpp

   1 namespace factor
   2 {
   3
   4 struct growable_array;
   5 struct code_root;
   6
   7 struct factor_vm
   8 {
   9         // First 5 fields accessed directly by compiler. See basis/vm/vm.factor
  10
  11         /* Current context */
  12         context *ctx;
  13
  14         /* Spare context -- for callbacks */
  15         context *spare_ctx;
  16
  17         /* New objects are allocated here */
  18         nursery_space nursery;
  19
  20         /* Add this to a shifted address to compute write barrier offsets */
  21         cell cards_offset;
  22         cell decks_offset;
  23
  24         /* Various special objects, accessed by special-object and
  25         set-special-object primitives */
  26         cell special_objects[special_object_count];
  27
  28         /* Data stack and retain stack sizes */
  29         cell datastack_size, retainstack_size, callstack_size;
  30
  31         /* Stack of callback IDs */
  32         std::vector<int> callback_ids;
  33
  34         /* Next callback ID */
  35         int callback_id;
  36
  37         /* List of callback function descriptors for PPC */
  38         std::list<void **> function_descriptors;
  39
  40         /* Pooling unused contexts to make context allocation cheaper */
  41         std::list<context *> unused_contexts;
  42
  43         /* Active contexts, for tracing by the GC */
  44         std::set<context *> active_contexts;
  45
  46         /* Canonical truth value. In Factor, 't' */
  47         cell true_object;
  48
  49         /* External entry points */
  50         c_to_factor_func_type c_to_factor_func;
  51
  52         /* Is call counting enabled? */
  53         bool profiling_p;
  54         /* Is sampling profiler enabled? */
  55         bool sampling_p;
  56
  57         /* Global variables used to pass fault handler state from signal handler
  58         to VM */
  59         bool signal_from_leaf;
  60         cell signal_number;
  61         cell signal_fault_addr;
  62         unsigned int signal_fpu_status;
  63         bool safepoint_fep;
  64         cell safepoint_sample_count;
  65         sigset_t safepoint_signals;
  66
  67         /* GC is off during heap walking */
  68         bool gc_off;
  69
  70         /* Data heap */
  71         data_heap *data;
  72
  73         /* Code heap */
  74         code_heap *code;
  75
  76         /* Pinned callback stubs */
  77         callback_heap *callbacks;
  78
  79         /* Only set if we're performing a GC */
  80         gc_state *current_gc;
  81
  82         /* Mark stack */
  83         std::vector<cell> mark_stack;
  84
  85         /* If not NULL, we push GC events here */
  86         std::vector<gc_event> *gc_events;
  87
  88         /* If a runtime function needs to call another function which potentially
  89            allocates memory, it must wrap any references to the data and code
  90            heaps with data_root and code_root smart pointers, which register
  91            themselves here. See data_roots.hpp and code_roots.hpp */
  92         std::vector<data_root_range> data_roots;
  93         std::vector<cell> bignum_roots;
  94         std::vector<code_root *> code_roots;
  95
  96         /* Debugger */
  97         bool fep_p;
  98         bool fep_disabled;
  99         bool full_output;
 100
 101         /* Canonical bignums */
 102         cell bignum_zero;
 103         cell bignum_pos_one;
 104         cell bignum_neg_one;
 105
 106         /* Method dispatch statistics */
 107         dispatch_statistics dispatch_stats;
 108
 109         /* Number of entries in a polymorphic inline cache */
 110         cell max_pic_size;
 111
 112         /* Incrementing object counter for identity hashing */
 113         cell object_counter;
 114
 115         /* Sanity check to ensure that monotonic counter doesn't
 116         decrease */
 117         u64 last_nano_count;
 118
 119         /* Stack for signal handlers, only used on Unix */
 120         segment *signal_callstack_seg;
 121
 122         // contexts
 123         context *new_context();
 124         void init_context(context *ctx);
 125         void delete_context(context *old_context);
 126         void init_contexts(cell datastack_size_, cell retainstack_size_, cell callstack_size_);
 127         void delete_contexts();
 128         cell begin_callback(cell quot);
 129         void end_callback();
 130         void primitive_current_callback();
 131         void primitive_context_object();
 132         void primitive_context_object_for();
 133         void primitive_set_context_object();
 134         cell stack_to_array(cell bottom, cell top);
 135         cell datastack_to_array(context *ctx);
 136         void primitive_datastack();
 137         void primitive_datastack_for();
 138         cell retainstack_to_array(context *ctx);
 139         void primitive_retainstack();
 140         void primitive_retainstack_for();
 141         cell array_to_stack(array *array, cell bottom);
 142         void set_datastack(context *ctx, array *array);
 143         void primitive_set_datastack();
 144         void set_retainstack(context *ctx, array *array);
 145         void primitive_set_retainstack();
 146         void primitive_check_datastack();
 147         void primitive_load_locals();
 148
 149         template<typename Iterator> void iterate_active_callstacks(Iterator &iter)
 150         {
 151                 std::set<context *>::const_iterator begin = active_contexts.begin();
 152                 std::set<context *>::const_iterator end = active_contexts.end();
 153                 while(begin != end) iterate_callstack(*begin++,iter);
 154         }
 155
 156         // run
 157         void primitive_exit();
 158         void primitive_nano_count();
 159         void primitive_sleep();
 160         void primitive_set_slot();
 161
 162         // objects
 163         void primitive_special_object();
 164         void primitive_set_special_object();
 165         void primitive_identity_hashcode();
 166         void compute_identity_hashcode(object *obj);
 167         void primitive_compute_identity_hashcode();
 168         cell object_size(cell tagged);
 169         cell clone_object(cell obj_);
 170         void primitive_clone();
 171         void primitive_become();
 172
 173         // profiler
 174         void init_profiler();
 175         code_block *compile_profiling_stub(cell word_);
 176         void set_profiling(bool profiling);
 177         void primitive_profiling();
 178
 179         // errors
 180         void general_error(vm_error_type error, cell arg1, cell arg2);
 181         void type_error(cell type, cell tagged);
 182         void not_implemented_error();
 183         void memory_protection_error(cell addr);
 184         void signal_error(cell signal);
 185         void divide_by_zero_error();
 186         void fp_trap_error(unsigned int fpu_status);
 187         void primitive_unimplemented();
 188         void memory_signal_handler_impl();
 189         void synchronous_signal_handler_impl();
 190         void fp_signal_handler_impl();
 191         void enqueue_safepoint_fep();
 192         void enqueue_safepoint_sample();
 193         void enqueue_safepoint_signal(cell signal);
 194         void handle_safepoint();
 195
 196         // bignum
 197         int bignum_equal_p(bignum * x, bignum * y);
 198         enum bignum_comparison bignum_compare(bignum * x, bignum * y);
 199         bignum *bignum_add(bignum * x, bignum * y);
 200         bignum *bignum_subtract(bignum * x, bignum * y);
 201         bignum *bignum_multiply(bignum * x, bignum * y);
 202         void bignum_divide(bignum * numerator, bignum * denominator, bignum * * quotient, bignum * * remainder);
 203         bignum *bignum_quotient(bignum * numerator, bignum * denominator);
 204         bignum *bignum_remainder(bignum * numerator, bignum * denominator);
 205         cell bignum_to_cell(bignum * bignum);
 206         fixnum bignum_to_fixnum(bignum * bignum);
 207         s64 bignum_to_long_long(bignum * bignum);
 208         u64 bignum_to_ulong_long(bignum * bignum);
 209         bignum *double_to_bignum(double x);
 210         int bignum_equal_p_unsigned(bignum * x, bignum * y);
 211         enum bignum_comparison bignum_compare_unsigned(bignum * x, bignum * y);
 212         bignum *bignum_add_unsigned(bignum * x, bignum * y, int negative_p);
 213         bignum *bignum_subtract_unsigned(bignum * x, bignum * y);
 214         bignum *bignum_multiply_unsigned(bignum * x, bignum * y, int negative_p);
 215         bignum *bignum_multiply_unsigned_small_factor(bignum * x, bignum_digit_type y,int negative_p);
 216         void bignum_destructive_add(bignum * bignum, bignum_digit_type n);
 217         void bignum_destructive_scale_up(bignum * bignum, bignum_digit_type factor);
 218         void bignum_divide_unsigned_large_denominator(bignum * numerator, bignum * denominator,
 219                                                         bignum * * quotient, bignum * * remainder, int q_negative_p, int r_negative_p);
 220         void bignum_divide_unsigned_normalized(bignum * u, bignum * v, bignum * q);
 221         bignum_digit_type bignum_divide_subtract(bignum_digit_type * v_start, bignum_digit_type * v_end,
 222                                                         bignum_digit_type guess, bignum_digit_type * u_start);
 223         void bignum_divide_unsigned_medium_denominator(bignum * numerator,bignum_digit_type denominator,
 224                                                         bignum * * quotient, bignum * * remainder,int q_negative_p, int r_negative_p);
 225         void bignum_destructive_normalization(bignum * source, bignum * target, int shift_left);
 226         void bignum_destructive_unnormalization(bignum * bignum, int shift_right);
 227         bignum_digit_type bignum_digit_divide(bignum_digit_type uh, bignum_digit_type ul,
 228                                                         bignum_digit_type v, bignum_digit_type * q) /* return value */;
 229         bignum_digit_type bignum_digit_divide_subtract(bignum_digit_type v1, bignum_digit_type v2,
 230                                                         bignum_digit_type guess, bignum_digit_type * u);
 231         void bignum_divide_unsigned_small_denominator(bignum * numerator, bignum_digit_type denominator,
 232                                                         bignum * * quotient, bignum * * remainder,int q_negative_p, int r_negative_p);
 233         bignum_digit_type bignum_destructive_scale_down(bignum * bignum, bignum_digit_type denominator);
 234         bignum * bignum_remainder_unsigned_small_denominator(bignum * n, bignum_digit_type d, int negative_p);
 235         bignum *bignum_digit_to_bignum(bignum_digit_type digit, int negative_p);
 236         bignum *allot_bignum(bignum_length_type length, int negative_p);
 237         bignum * allot_bignum_zeroed(bignum_length_type length, int negative_p);
 238         bignum *bignum_shorten_length(bignum * bignum, bignum_length_type length);
 239         bignum *bignum_trim(bignum * bignum);
 240         bignum *bignum_new_sign(bignum * x, int negative_p);
 241         bignum *bignum_maybe_new_sign(bignum * x, int negative_p);
 242         void bignum_destructive_copy(bignum * source, bignum * target);
 243         bignum *bignum_bitwise_not(bignum * x);
 244         bignum *bignum_arithmetic_shift(bignum * arg1, fixnum n);
 245         bignum *bignum_bitwise_and(bignum * arg1, bignum * arg2);
 246         bignum *bignum_bitwise_ior(bignum * arg1, bignum * arg2);
 247         bignum *bignum_bitwise_xor(bignum * arg1, bignum * arg2);
 248         bignum *bignum_magnitude_ash(bignum * arg1, fixnum n);
 249         bignum *bignum_pospos_bitwise_op(int op, bignum * arg1, bignum * arg2);
 250         bignum *bignum_posneg_bitwise_op(int op, bignum * arg1, bignum * arg2);
 251         bignum *bignum_negneg_bitwise_op(int op, bignum * arg1, bignum * arg2);
 252         void bignum_negate_magnitude(bignum * arg);
 253         bignum *bignum_integer_length(bignum * x);
 254         int bignum_logbitp(int shift, bignum * arg);
 255         int bignum_unsigned_logbitp(int shift, bignum * bignum);
 256
 257         //data heap
 258         void init_card_decks();
 259         void set_data_heap(data_heap *data_);
 260         void init_data_heap(cell young_size, cell aging_size, cell tenured_size);
 261         void primitive_size();
 262         data_heap_room data_room();
 263         void primitive_data_room();
 264         void begin_scan();
 265         void end_scan();
 266         cell instances(cell type);
 267         void primitive_all_instances();
 268
 269         template<typename Generation, typename Iterator>
 270         inline void each_object(Generation *gen, Iterator &iterator)
 271         {
 272                 cell obj = gen->first_object();
 273                 while(obj)
 274                 {
 275                         iterator((object *)obj);
 276                         obj = gen->next_object_after(obj);
 277                 }
 278         }
 279
 280         template<typename Iterator> inline void each_object(Iterator &iterator)
 281         {
 282                 gc_off = true;
 283
 284                 each_object(data->tenured,iterator);
 285                 each_object(data->aging,iterator);
 286                 each_object(data->nursery,iterator);
 287
 288                 gc_off = false;
 289         }
 290
 291         /* the write barrier must be called any time we are potentially storing a
 292            pointer from an older generation to a younger one */
 293         inline void write_barrier(cell *slot_ptr)
 294         {
 295                 *(char *)(cards_offset + ((cell)slot_ptr >> card_bits)) = card_mark_mask;
 296                 *(char *)(decks_offset + ((cell)slot_ptr >> deck_bits)) = card_mark_mask;
 297         }
 298
 299         inline void write_barrier(object *obj, cell size)
 300         {
 301                 cell start = (cell)obj & (~card_size + 1);
 302                 cell end = ((cell)obj + size + card_size - 1) & (~card_size + 1);
 303
 304                 for(cell offset = start; offset < end; offset += card_size)
 305                         write_barrier((cell *)offset);
 306         }
 307
 308         // data heap checker
 309         void check_data_heap();
 310
 311         // gc
 312         void end_gc();
 313         void set_current_gc_op(gc_op op);
 314         void start_gc_again();
 315         void update_code_heap_for_minor_gc(std::set<code_block *> *remembered_set);
 316         void collect_nursery();
 317         void collect_aging();
 318         void collect_to_tenured();
 319         void update_code_roots_for_sweep();
 320         void update_code_roots_for_compaction();
 321         void collect_mark_impl(bool trace_contexts_p);
 322         void collect_sweep_impl();
 323         void collect_full(bool trace_contexts_p);
 324         void collect_compact_impl(bool trace_contexts_p);
 325         void collect_compact_code_impl(bool trace_contexts_p);
 326         void collect_compact(bool trace_contexts_p);
 327         void collect_growing_heap(cell requested_size, bool trace_contexts_p);
 328         void gc(gc_op op, cell requested_size, bool trace_contexts_p);
 329         void scrub_context(context *ctx);
 330         void scrub_contexts();
 331         void primitive_minor_gc();
 332         void primitive_full_gc();
 333         void primitive_compact_gc();
 334         void primitive_enable_gc_events();
 335         void primitive_disable_gc_events();
 336         object *allot_object(cell type, cell size);
 337         object *allot_large_object(cell type, cell size);
 338
 339         template<typename Type> Type *allot(cell size)
 340         {
 341                 return (Type *)allot_object(Type::type_number,size);
 342         }
 343
 344         inline bool in_data_heap_p(cell pointer)
 345         {
 346                 return (pointer >= data->seg->start && pointer < data->seg->end);
 347         }
 348
 349         inline void check_data_pointer(object *pointer)
 350         {
 351         #ifdef FACTOR_DEBUG
 352                 if(!(current_gc && current_gc->op == collect_growing_heap_op))
 353                         assert(in_data_heap_p((cell)pointer));
 354         #endif
 355         }
 356
 357         // generic arrays
 358         template<typename Array> Array *allot_uninitialized_array(cell capacity);
 359         template<typename Array> bool reallot_array_in_place_p(Array *array, cell capacity);
 360         template<typename Array> Array *reallot_array(Array *array_, cell capacity);
 361
 362         // debug
 363         void print_chars(string* str);
 364         void print_word(word* word, cell nesting);
 365         void print_factor_string(string* str);
 366         void print_array(array* array, cell nesting);
 367         void print_tuple(tuple *tuple, cell nesting);
 368         void print_nested_obj(cell obj, fixnum nesting);
 369         void print_obj(cell obj);
 370         void print_objects(cell *start, cell *end);
 371         void print_datastack();
 372         void print_retainstack();
 373         void print_callstack();
 374         void dump_cell(cell x);
 375         void dump_memory(cell from, cell to);
 376         template<typename Generation> void dump_generation(const char *name, Generation *gen);
 377         void dump_generations();
 378         void dump_objects(cell type);
 379         void find_data_references_step(cell *scan);
 380         void find_data_references(cell look_for_);
 381         void dump_code_heap();
 382         void factorbug();
 383         void primitive_die();
 384
 385         // arrays
 386         inline void set_array_nth(array *array, cell slot, cell value);
 387         array *allot_array(cell capacity, cell fill_);
 388         void primitive_array();
 389         cell allot_array_1(cell obj_);
 390         cell allot_array_2(cell v1_, cell v2_);
 391         cell allot_array_4(cell v1_, cell v2_, cell v3_, cell v4_);
 392         void primitive_resize_array();
 393         cell std_vector_to_array(std::vector<cell> &elements);
 394
 395         // strings
 396         string *allot_string_internal(cell capacity);
 397         void fill_string(string *str_, cell start, cell capacity, cell fill);
 398         string *allot_string(cell capacity, cell fill);
 399         void primitive_string();
 400         bool reallot_string_in_place_p(string *str, cell capacity);
 401         string* reallot_string(string *str_, cell capacity);
 402         void primitive_resize_string();
 403         void primitive_set_string_nth_fast();
 404
 405         // booleans
 406         cell tag_boolean(cell untagged)
 407         {
 408                 return (untagged ? true_object : false_object);
 409         }
 410
 411         // byte arrays
 412         byte_array *allot_byte_array(cell size);
 413         void primitive_byte_array();
 414         void primitive_uninitialized_byte_array();
 415         void primitive_resize_byte_array();
 416
 417         template<typename Type> byte_array *byte_array_from_value(Type *value);
 418
 419         // tuples
 420         void primitive_tuple();
 421         void primitive_tuple_boa();
 422
 423         // words
 424         word *allot_word(cell name_, cell vocab_, cell hashcode_);
 425         void primitive_word();
 426         void primitive_word_code();
 427         void update_word_entry_point(word *w_);
 428         void primitive_optimized_p();
 429         void primitive_wrapper();
 430         void jit_compile_word(cell word_, cell def_, bool relocating);
 431         cell find_all_words();
 432         void compile_all_words();
 433
 434         // math
 435         void primitive_bignum_to_fixnum();
 436         void primitive_float_to_fixnum();
 437         void primitive_fixnum_divint();
 438         void primitive_fixnum_divmod();
 439         bignum *fixnum_to_bignum(fixnum);
 440         bignum *cell_to_bignum(cell);
 441         bignum *long_long_to_bignum(s64 n);
 442         bignum *ulong_long_to_bignum(u64 n);
 443         inline fixnum sign_mask(fixnum x);
 444         inline fixnum branchless_max(fixnum x, fixnum y);
 445         inline fixnum branchless_abs(fixnum x);
 446         void primitive_fixnum_shift();
 447         void primitive_fixnum_to_bignum();
 448         void primitive_float_to_bignum();
 449         void primitive_bignum_eq();
 450         void primitive_bignum_add();
 451         void primitive_bignum_subtract();
 452         void primitive_bignum_multiply();
 453         void primitive_bignum_divint();
 454         void primitive_bignum_divmod();
 455         void primitive_bignum_mod();
 456         void primitive_bignum_and();
 457         void primitive_bignum_or();
 458         void primitive_bignum_xor();
 459         void primitive_bignum_shift();
 460         void primitive_bignum_less();
 461         void primitive_bignum_lesseq();
 462         void primitive_bignum_greater();
 463         void primitive_bignum_greatereq();
 464         void primitive_bignum_not();
 465         void primitive_bignum_bitp();
 466         void primitive_bignum_log2();
 467         inline cell unbox_array_size();
 468         cell unbox_array_size_slow();
 469         void primitive_fixnum_to_float();
 470         void primitive_format_float();
 471         void primitive_float_eq();
 472         void primitive_float_add();
 473         void primitive_float_subtract();
 474         void primitive_float_multiply();
 475         void primitive_float_divfloat();
 476         void primitive_float_less();
 477         void primitive_float_lesseq();
 478         void primitive_float_greater();
 479         void primitive_float_greatereq();
 480         void primitive_float_bits();
 481         void primitive_bits_float();
 482         void primitive_double_bits();
 483         void primitive_bits_double();
 484         fixnum to_fixnum(cell tagged);
 485         cell to_cell(cell tagged);
 486         cell from_signed_8(s64 n);
 487         s64 to_signed_8(cell obj);
 488         cell from_unsigned_8(u64 n);
 489         u64 to_unsigned_8(cell obj);
 490         float to_float(cell value);
 491         double to_double(cell value);
 492         inline void overflow_fixnum_add(fixnum x, fixnum y);
 493         inline void overflow_fixnum_subtract(fixnum x, fixnum y);
 494         inline void overflow_fixnum_multiply(fixnum x, fixnum y);
 495         inline cell from_signed_cell(fixnum x);
 496         inline cell from_unsigned_cell(cell x);
 497         inline cell allot_float(double n);
 498         inline bignum *float_to_bignum(cell tagged);
 499         inline double untag_float(cell tagged);
 500         inline double untag_float_check(cell tagged);
 501         inline fixnum float_to_fixnum(cell tagged);
 502         inline double fixnum_to_float(cell tagged);
 503
 504         // tagged
 505         template<typename Type> Type *untag_check(cell value);
 506
 507         // io
 508         void init_c_io();
 509         void io_error();
 510         FILE* safe_fopen(char *filename, char *mode);
 511         int safe_fgetc(FILE *stream);
 512         size_t safe_fread(void *ptr, size_t size, size_t nitems, FILE *stream);
 513         void safe_fputc(int c, FILE* stream);
 514         size_t safe_fwrite(void *ptr, size_t size, size_t nitems, FILE *stream);
 515         int safe_ftell(FILE *stream);
 516         void safe_fseek(FILE *stream, off_t offset, int whence);
 517         void safe_fflush(FILE *stream);
 518         void safe_fclose(FILE *stream);
 519         void primitive_fopen();
 520         FILE *pop_file_handle();
 521         void primitive_fgetc();
 522         void primitive_fread();
 523         void primitive_fputc();
 524         void primitive_fwrite();
 525         void primitive_ftell();
 526         void primitive_fseek();
 527         void primitive_fflush();
 528         void primitive_fclose();
 529
 530         // code_block
 531         cell compute_entry_point_address(cell obj);
 532         cell compute_entry_point_pic_address(word *w, cell tagged_quot);
 533         cell compute_entry_point_pic_address(cell w_);
 534         cell compute_entry_point_pic_tail_address(cell w_);
 535         cell code_block_owner(code_block *compiled);
 536         void update_word_references(code_block *compiled, bool reset_inline_caches);
 537         void undefined_symbol();
 538         cell compute_dlsym_address(array *literals, cell index);
 539 #ifdef FACTOR_PPC
 540         cell compute_dlsym_toc_address(array *literals, cell index);
 541 #endif
 542         cell compute_vm_address(cell arg);
 543         void store_external_address(instruction_operand op);
 544         cell compute_here_address(cell arg, cell offset, code_block *compiled);
 545         void initialize_code_block(code_block *compiled, cell literals);
 546         void initialize_code_block(code_block *compiled);
 547         void fixup_labels(array *labels, code_block *compiled);
 548         code_block *allot_code_block(cell size, code_block_type type);
 549         code_block *add_code_block(code_block_type type, cell code_, cell labels_, cell owner_, cell relocation_, cell parameters_, cell literals_);
 550
 551         //code heap
 552         inline void check_code_pointer(cell ptr) { }
 553
 554         template<typename Iterator> void each_code_block(Iterator &iter)
 555         {
 556                 code->allocator->iterate(iter);
 557         }
 558
 559         void init_code_heap(cell size);
 560         bool in_code_heap_p(cell ptr);
 561         void update_code_heap_words(bool reset_inline_caches);
 562         void initialize_code_blocks();
 563         void primitive_modify_code_heap();
 564         code_heap_room code_room();
 565         void primitive_code_room();
 566         void primitive_strip_stack_traces();
 567         cell code_blocks();
 568         void primitive_code_blocks();
 569
 570         // callbacks
 571         void init_callbacks(cell size);
 572         void primitive_callback();
 573
 574         // image
 575         void init_objects(image_header *h);
 576         void load_data_heap(FILE *file, image_header *h, vm_parameters *p);
 577         void load_code_heap(FILE *file, image_header *h, vm_parameters *p);
 578         bool save_image(const vm_char *saving_filename, const vm_char *filename);
 579         void primitive_save_image();
 580         void primitive_save_image_and_exit();
 581         void fixup_data(cell data_offset, cell code_offset);
 582         void fixup_code(cell data_offset, cell code_offset);
 583         void load_image(vm_parameters *p);
 584
 585         // callstack
 586         template<typename Iterator> void iterate_callstack_object(callstack *stack_, Iterator &iterator);
 587         void check_frame(stack_frame *frame);
 588         callstack *allot_callstack(cell size);
 589         stack_frame *second_from_top_stack_frame(context *ctx);
 590         cell capture_callstack(context *ctx);
 591         void primitive_callstack();
 592         void primitive_callstack_for();
 593         code_block *frame_code(stack_frame *frame);
 594         code_block_type frame_type(stack_frame *frame);
 595         cell frame_executing(stack_frame *frame);
 596         cell frame_executing_quot(stack_frame *frame);
 597         stack_frame *frame_successor(stack_frame *frame);
 598         cell frame_scan(stack_frame *frame);
 599         cell frame_offset(stack_frame *frame);
 600         void set_frame_offset(stack_frame *frame, cell offset);
 601         void primitive_callstack_to_array();
 602         stack_frame *innermost_stack_frame(stack_frame *bottom, stack_frame *top);
 603         void primitive_innermost_stack_frame_executing();
 604         void primitive_innermost_stack_frame_scan();
 605         void primitive_set_innermost_stack_frame_quot();
 606         void primitive_callstack_bounds();
 607         template<typename Iterator> void iterate_callstack(context *ctx, Iterator &iterator);
 608         void dispatch_signal_handler(cell *sp, cell *pc, cell newpc);
 609         void dispatch_signal_handler_from_leaf(cell *sp, cell *pc, cell newpc);
 610
 611         template<typename CellA, typename CellB, typename CellC>
 612         void dispatch_signal_handler(CellA *sp, CellB *pc, CellC newpc)
 613         {
 614                 dispatch_signal_handler(
 615                         reinterpret_cast<cell*>(sp),
 616                         reinterpret_cast<cell*>(pc),
 617                         (cell)newpc
 618                 );
 619         }
 620
 621         // alien
 622         char *pinned_alien_offset(cell obj);
 623         cell allot_alien(cell delegate_, cell displacement);
 624         cell allot_alien(void *address);
 625         void primitive_displaced_alien();
 626         void primitive_alien_address();
 627         void *alien_pointer();
 628         void primitive_dlopen();
 629         void primitive_dlsym();
 630         void primitive_dlsym_raw();
 631         void primitive_dlclose();
 632         void primitive_dll_validp();
 633         char *alien_offset(cell obj);
 634
 635         // quotations
 636         void primitive_jit_compile();
 637         code_block *lazy_jit_compile_block();
 638         void primitive_array_to_quotation();
 639         void primitive_quotation_code();
 640         void set_quot_entry_point(quotation *quot, code_block *code);
 641         code_block *jit_compile_quot(cell owner_, cell quot_, bool relocating);
 642         void jit_compile_quot(cell quot_, bool relocating);
 643         fixnum quot_code_offset_to_scan(cell quot_, cell offset);
 644         cell lazy_jit_compile(cell quot);
 645         bool quot_compiled_p(quotation *quot);
 646         void primitive_quot_compiled_p();
 647         cell find_all_quotations();
 648         void initialize_all_quotations();
 649
 650         // dispatch
 651         cell search_lookup_alist(cell table, cell klass);
 652         cell search_lookup_hash(cell table, cell klass, cell hashcode);
 653         cell nth_superclass(tuple_layout *layout, fixnum echelon);
 654         cell nth_hashcode(tuple_layout *layout, fixnum echelon);
 655         cell lookup_tuple_method(cell obj, cell methods);
 656         cell lookup_method(cell obj, cell methods);
 657         void primitive_lookup_method();
 658         cell object_class(cell obj);
 659         cell method_cache_hashcode(cell klass, array *array);
 660         void update_method_cache(cell cache, cell klass, cell method);
 661         void primitive_mega_cache_miss();
 662         void primitive_reset_dispatch_stats();
 663         void primitive_dispatch_stats();
 664
 665         // inline cache
 666         void init_inline_caching(int max_size);
 667         void deallocate_inline_cache(cell return_address);
 668         cell determine_inline_cache_type(array *cache_entries);
 669         void update_pic_count(cell type);
 670         code_block *compile_inline_cache(fixnum index,cell generic_word_,cell methods_,cell cache_entries_,bool tail_call_p);
 671         void *megamorphic_call_stub(cell generic_word);
 672         cell inline_cache_size(cell cache_entries);
 673         cell add_inline_cache_entry(cell cache_entries_, cell klass_, cell method_);
 674         void update_pic_transitions(cell pic_size);
 675         void *inline_cache_miss(cell return_address);
 676
 677         // entry points
 678         void c_to_factor(cell quot);
 679         template<typename Func> Func get_entry_point(cell n);
 680         void unwind_native_frames(cell quot, stack_frame *to);
 681         cell get_fpu_state();
 682         void set_fpu_state(cell state);
 683
 684         // factor
 685         void default_parameters(vm_parameters *p);
 686         bool factor_arg(const vm_char *str, const vm_char *arg, cell *value);
 687         void init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv);
 688         void prepare_boot_image();
 689         void init_factor(vm_parameters *p);
 690         void pass_args_to_factor(int argc, vm_char **argv);
 691         void start_factor(vm_parameters *p);
 692         void stop_factor();
 693         void start_embedded_factor(vm_parameters *p);
 694         void start_standalone_factor(int argc, vm_char **argv);
 695         char *factor_eval_string(char *string);
 696         void factor_eval_free(char *result);
 697         void factor_yield();
 698         void factor_sleep(long us);
 699
 700         // os-*
 701         void primitive_existsp();
 702         void move_file(const vm_char *path1, const vm_char *path2);
 703         void init_ffi();
 704         void ffi_dlopen(dll *dll);
 705         void *ffi_dlsym(dll *dll, symbol_char *symbol);
 706         void *ffi_dlsym_raw(dll *dll, symbol_char *symbol);
 707  #ifdef FACTOR_PPC
 708         void *ffi_dlsym_toc(dll *dll, symbol_char *symbol);
 709  #endif
 710         void ffi_dlclose(dll *dll);
 711         void c_to_factor_toplevel(cell quot);
 712         void init_signals();
 713
 714         // os-windows
 715   #if defined(WINDOWS)
 716         const vm_char *vm_executable_path();
 717         const vm_char *default_image_path();
 718         void windows_image_path(vm_char *full_path, vm_char *temp_path, unsigned int length);
 719         BOOL windows_stat(vm_char *path);
 720
 721   #if defined(WINNT)
 722         void open_console();
 723         LONG exception_handler(PEXCEPTION_RECORD e, void *frame, PCONTEXT c, void *dispatch);
 724         BOOL ctrl_handler(DWORD dwCtrlType);
 725   #endif
 726
 727   #else  // UNIX
 728         void dispatch_signal(void *uap, void (handler)());
 729         void unix_init_signals();
 730   #endif
 731
 732   #ifdef __APPLE__
 733         void call_fault_handler(exception_type_t exception, exception_data_type_t code, MACH_EXC_STATE_TYPE *exc_state, MACH_THREAD_STATE_TYPE *thread_state, MACH_FLOAT_STATE_TYPE *float_state);
 734   #endif
 735
 736         factor_vm();
 737         ~factor_vm();
 738 };
 739
 740 }