775 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			C++
		
	
	
			
		
		
	
	
			775 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			C++
		
	
	
using namespace std;
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namespace factor {
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typedef void (*c_to_factor_func_type)(cell quot);
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typedef void (*unwind_native_frames_func_type)(cell quot, cell to);
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typedef cell (*get_fpu_state_func_type)();
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typedef void (*set_fpu_state_func_type)(cell state);
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struct growable_array;
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struct code_root;
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struct factor_vm {
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  //
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  // vvvvvv
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  // THESE FIELDS ARE ACCESSED DIRECTLY FROM FACTOR. See:
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  //   basis/vm/vm.factor
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  //   basis/compiler/constants/constants.factor
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  /* Current context */
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  context* ctx;
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  /* Spare context -- for callbacks */
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  context* spare_ctx;
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  /* New objects are allocated here, use the data->nursery reference
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     instead from c++ code. */
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  bump_allocator nursery;
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  /* Add this to a shifted address to compute write barrier offsets */
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  cell cards_offset;
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  cell decks_offset;
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  /* cdecl signal handler address, used by signal handler subprimitives */
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  cell signal_handler_addr;
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  /* are we handling a memory error? used to detect double faults */
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  cell faulting_p;
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  /* Various special objects, accessed by special-object and
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	set-special-object primitives */
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  cell special_objects[special_object_count];
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  // THESE FIELDS ARE ACCESSED DIRECTLY FROM FACTOR.
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  // ^^^^^^
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  //
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  /* Handle to the main thread we run in */
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  THREADHANDLE thread;
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  /* Data stack and retain stack sizes */
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  cell datastack_size, retainstack_size, callstack_size;
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  /* Stack of callback IDs */
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  std::vector<int> callback_ids;
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  /* Next callback ID */
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  int callback_id;
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  /* List of callback function descriptors for PPC */
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  std::list<void**> function_descriptors;
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  /* Pooling unused contexts to make context allocation cheaper */
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  std::list<context*> unused_contexts;
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  /* Active contexts, for tracing by the GC */
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  std::set<context*> active_contexts;
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  /* Canonical truth value. In Factor, 't' */
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  cell true_object;
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  /* External entry points */
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  c_to_factor_func_type c_to_factor_func;
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  /* Is profiling enabled? */
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  volatile cell sampling_profiler_p;
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  fixnum samples_per_second;
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  /* Global variables used to pass fault handler state from signal handler
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     to VM */
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  bool signal_resumable;
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  cell signal_number;
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  cell signal_fault_addr;
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  cell signal_fault_pc;
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  unsigned int signal_fpu_status;
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  /* Pipe used to notify Factor multiplexer of signals */
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  int signal_pipe_input, signal_pipe_output;
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  /* State kept by the sampling profiler */
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  std::vector<profiling_sample> samples;
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  std::vector<cell> sample_callstacks;
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  /* GC is off during heap walking */
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  bool gc_off;
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  /* Data heap */
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  data_heap* data;
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  /* Code heap */
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  code_heap* code;
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  /* Pinned callback stubs */
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  callback_heap* callbacks;
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  /* Only set if we're performing a GC */
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  gc_state* current_gc;
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  volatile cell current_gc_p;
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  /* Set if we're in the jit */
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  volatile fixnum current_jit_count;
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  /* Mark stack */
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  std::vector<cell> mark_stack;
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  /* If not NULL, we push GC events here */
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  std::vector<gc_event>* gc_events;
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  /* If a runtime function needs to call another function which potentially
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     allocates memory, it must wrap any references to the data and code
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     heaps with data_root and code_root smart pointers, which register
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     themselves here. See data_roots.hpp and code_roots.hpp */
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  std::vector<cell*> data_roots;
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  std::vector<code_root*> code_roots;
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  /* Debugger */
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  bool fep_p;
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  bool fep_help_was_shown;
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  bool fep_disabled;
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  bool full_output;
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  /* Canonical bignums */
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  cell bignum_zero;
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  cell bignum_pos_one;
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  cell bignum_neg_one;
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  /* Method dispatch statistics */
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  dispatch_statistics dispatch_stats;
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  /* Number of entries in a polymorphic inline cache */
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  cell max_pic_size;
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  /* Incrementing object counter for identity hashing */
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  cell object_counter;
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  /* Sanity check to ensure that monotonic counter doesn't decrease */
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  uint64_t last_nano_count;
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  /* Stack for signal handlers, only used on Unix */
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  segment* signal_callstack_seg;
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  /* Are we already handling a fault? Used to catch double memory faults */
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  static bool fatal_erroring_p;
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  /* Safepoint state */
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  volatile safepoint_state safepoint;
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  // contexts
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  context* new_context();
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  void init_context(context* ctx);
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  void delete_context();
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  void init_contexts(cell datastack_size_, cell retainstack_size_,
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                     cell callstack_size_);
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  void delete_contexts();
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  cell begin_callback(cell quot);
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  void end_callback();
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  void primitive_current_callback();
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  void primitive_context_object();
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  void primitive_context_object_for();
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  void primitive_set_context_object();
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  cell stack_to_array(cell bottom, cell top, vm_error_type error);
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  cell datastack_to_array(context* ctx);
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  void primitive_datastack_for();
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  cell retainstack_to_array(context* ctx);
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  void primitive_retainstack_for();
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  cell array_to_stack(array* array, cell bottom);
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  void set_datastack(context* ctx, array* array);
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  void primitive_set_datastack();
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  void set_retainstack(context* ctx, array* array);
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  void primitive_set_retainstack();
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  void primitive_check_datastack();
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  void primitive_load_locals();
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  // run
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  void primitive_exit();
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  void primitive_nano_count();
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  void primitive_sleep();
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  void primitive_set_slot();
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  // objects
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  void primitive_special_object();
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  void primitive_set_special_object();
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  void primitive_identity_hashcode();
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  void compute_identity_hashcode(object* obj);
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  void primitive_compute_identity_hashcode();
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  cell object_size(cell tagged);
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  cell clone_object(cell obj_);
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  void primitive_clone();
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  void primitive_become();
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  // sampling_profiler
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  void clear_samples();
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  void record_sample(bool prolog_p);
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  void record_callstack_sample(cell* begin, cell* end, bool prolog_p);
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  void start_sampling_profiler(fixnum rate);
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  void end_sampling_profiler();
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  void set_sampling_profiler(fixnum rate);
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  void primitive_sampling_profiler();
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  void primitive_get_samples();
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  void primitive_clear_samples();
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  // errors
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  void general_error(vm_error_type error, cell arg1, cell arg2);
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  void type_error(cell type, cell tagged);
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  void not_implemented_error();
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  void verify_memory_protection_error(cell addr);
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  void divide_by_zero_error();
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  void primitive_unimplemented();
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  void memory_signal_handler_impl();
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  void synchronous_signal_handler_impl();
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  void fp_signal_handler_impl();
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  // bignum
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  int bignum_equal_p(bignum* x, bignum* y);
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  enum bignum_comparison bignum_compare(bignum* x, bignum* y);
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  bignum* bignum_add(bignum* x, bignum* y);
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  bignum* bignum_subtract(bignum* x, bignum* y);
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  bignum* bignum_square(bignum* x_);
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  bignum* bignum_multiply(bignum* x, bignum* y);
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  void bignum_divide(bignum* numerator, bignum* denominator, bignum** quotient,
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                     bignum** remainder);
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  bignum* bignum_quotient(bignum* numerator, bignum* denominator);
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  bignum* bignum_remainder(bignum* numerator, bignum* denominator);
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  fixnum bignum_to_fixnum_strict(bignum* bn);
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  bignum* double_to_bignum(double x);
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  int bignum_equal_p_unsigned(bignum* x, bignum* y);
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  enum bignum_comparison bignum_compare_unsigned(bignum* x, bignum* y);
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  bignum* bignum_add_unsigned(bignum* x_, bignum* y_, int negative_p);
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  bignum* bignum_subtract_unsigned(bignum* x_, bignum* y_);
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  bignum* bignum_multiply_unsigned(bignum* x_, bignum* y_, int negative_p);
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  bignum* bignum_multiply_unsigned_small_factor(bignum* x, bignum_digit_type y,
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                                                int negative_p);
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  void bignum_destructive_add(bignum* bn, bignum_digit_type n);
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  void bignum_destructive_scale_up(bignum* bn, bignum_digit_type factor);
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  void bignum_divide_unsigned_large_denominator(
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      bignum* numerator_, bignum* denominator_, bignum** quotient,
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      bignum** remainder, int q_negative_p, int r_negative_p);
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  void bignum_divide_unsigned_normalized(bignum* u, bignum* v, bignum* q);
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  bignum_digit_type bignum_divide_subtract(bignum_digit_type* v_start,
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                                           bignum_digit_type* v_end,
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                                           bignum_digit_type guess,
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                                           bignum_digit_type* u_start);
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  void bignum_divide_unsigned_medium_denominator(
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      bignum* numerator_, bignum_digit_type denominator, bignum** quotient,
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      bignum** remainder, int q_negative_p, int r_negative_p);
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  void bignum_destructive_normalization(bignum* source, bignum* target,
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                                        int shift_left);
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  void bignum_destructive_unnormalization(bignum* bn, int shift_right);
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  bignum_digit_type bignum_digit_divide(
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      bignum_digit_type uh, bignum_digit_type ul, bignum_digit_type v,
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      bignum_digit_type* q) /* return value */;
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  bignum_digit_type bignum_digit_divide_subtract(bignum_digit_type v1,
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                                                 bignum_digit_type v2,
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                                                 bignum_digit_type guess,
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                                                 bignum_digit_type* u);
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  void bignum_divide_unsigned_small_denominator(
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      bignum* numerator_, bignum_digit_type denominator, bignum** quotient,
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      bignum** remainder, int q_negative_p, int r_negative_p);
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  bignum_digit_type bignum_destructive_scale_down(
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      bignum* bn, bignum_digit_type denominator);
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  bignum* bignum_remainder_unsigned_small_denominator(bignum* n,
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                                                      bignum_digit_type d,
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                                                      int negative_p);
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  bignum* bignum_digit_to_bignum(bignum_digit_type digit, int negative_p);
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  bignum* allot_bignum(bignum_length_type length, int negative_p);
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  bignum* allot_bignum_zeroed(bignum_length_type length, int negative_p);
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  bignum* bignum_shorten_length(bignum* bn, bignum_length_type length);
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  bignum* bignum_trim(bignum* bn);
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  bignum* bignum_new_sign(bignum* x_, int negative_p);
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  bignum* bignum_maybe_new_sign(bignum* x_, int negative_p);
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  void bignum_destructive_copy(bignum* source, bignum* target);
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  bignum* bignum_bitwise_not(bignum* x_);
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  bignum* bignum_arithmetic_shift(bignum* arg1, fixnum n);
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  bignum* bignum_bitwise_and(bignum* arg1, bignum* arg2);
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  bignum* bignum_bitwise_ior(bignum* arg1, bignum* arg2);
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  bignum* bignum_bitwise_xor(bignum* arg1, bignum* arg2);
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  bignum* bignum_magnitude_ash(bignum* arg1_, fixnum n);
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  bignum* bignum_pospos_bitwise_op(int op, bignum* arg1_, bignum* arg2_);
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  bignum* bignum_posneg_bitwise_op(int op, bignum* arg1_, bignum* arg2_);
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  bignum* bignum_negneg_bitwise_op(int op, bignum* arg1_, bignum* arg2_);
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  void bignum_negate_magnitude(bignum* arg);
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  bignum* bignum_integer_length(bignum* x_);
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  int bignum_logbitp(int shift, bignum* arg);
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  int bignum_unsigned_logbitp(int shift, bignum* bn);
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  bignum* bignum_gcd(bignum* a_, bignum* b_);
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  //data heap
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  void init_card_decks();
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  void set_data_heap(data_heap* data_);
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  void init_data_heap(cell young_size, cell aging_size, cell tenured_size);
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  void primitive_size();
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  data_heap_room data_room();
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  void primitive_data_room();
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  void begin_scan();
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  void end_scan();
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  cell instances(cell type);
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  void primitive_all_instances();
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  template <typename Generation, typename Iterator>
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  inline void each_object(Generation* gen, Iterator& iterator) {
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    cell obj = gen->first_object();
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    while (obj) {
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      iterator((object*)obj);
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      obj = gen->next_object_after(obj);
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    }
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  }
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  template <typename Iterator> inline void each_object(Iterator& iterator) {
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    /* The nursery can't be iterated because there may be gaps between
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       the objects (see factor_vm::reallot_array) so we require it to
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       be empty first. */
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    FACTOR_ASSERT(data->nursery->occupied_space() == 0);
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    gc_off = true;
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    each_object(data->tenured, iterator);
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    each_object(data->aging, iterator);
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    gc_off = false;
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  }
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  template <typename Iterator>
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  inline void each_object_each_slot(Iterator& iterator) {
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    auto each_object_func = [&](object* obj) {
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      auto each_slot_func = [&](cell* slot) {
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        iterator(obj, slot);
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      };
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      obj->each_slot(each_slot_func);
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    };
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    each_object(each_object_func);
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  }
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  /* the write barrier must be called any time we are potentially storing a
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     pointer from an older generation to a younger one */
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  inline void write_barrier(cell* slot_ptr) {
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    *(char*)(cards_offset + ((cell)slot_ptr >> card_bits)) = card_mark_mask;
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    *(char*)(decks_offset + ((cell)slot_ptr >> deck_bits)) = card_mark_mask;
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  }
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  inline void write_barrier(object* obj, cell size) {
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    cell start = (cell)obj & (~card_size + 1);
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    cell end = ((cell)obj + size + card_size - 1) & (~card_size + 1);
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    for (cell offset = start; offset < end; offset += card_size)
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      write_barrier((cell*)offset);
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  }
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  // data heap checker
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  void check_data_heap();
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  // gc
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  void end_gc();
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  void set_current_gc_op(gc_op op);
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  void start_gc_again();
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  void collect_nursery();
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  void collect_aging();
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  void collect_to_tenured();
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  void update_code_roots_for_sweep();
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  void update_code_roots_for_compaction();
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  void collect_mark_impl();
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  void collect_sweep_impl();
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  void collect_full();
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  void collect_compact_impl();
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  void collect_compact();
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  void collect_growing_heap(cell requested_size);
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  void gc(gc_op op, cell requested_size);
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  void primitive_minor_gc();
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  void primitive_full_gc();
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  void primitive_compact_gc();
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  void primitive_enable_gc_events();
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  void primitive_disable_gc_events();
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  object* allot_object(cell type, cell size);
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  object* allot_large_object(cell type, cell size);
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  /* Allocates memory */
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  template <typename Type> Type* allot(cell size) {
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    return (Type*)allot_object(Type::type_number, size);
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  }
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  // generic arrays
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  template <typename Array> Array* allot_uninitialized_array(cell capacity);
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  template <typename Array>
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  bool reallot_array_in_place_p(Array* array, cell capacity);
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  template <typename Array> Array* reallot_array(Array* array_, cell capacity);
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  // debug
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  void print_chars(ostream& out, string* str);
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  void print_word(ostream& out, word* word, cell nesting);
 | 
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  void print_factor_string(ostream& out, string* str);
 | 
						|
  void print_array(ostream& out, array* array, cell nesting);
 | 
						|
  void print_byte_array(ostream& out, byte_array* array, cell nesting);
 | 
						|
  void print_tuple(ostream& out, tuple* tuple, cell nesting);
 | 
						|
  void print_alien(ostream& out, alien* alien, cell nesting);
 | 
						|
  void print_nested_obj(ostream& out, cell obj, fixnum nesting);
 | 
						|
  void print_obj(ostream& out, cell obj);
 | 
						|
  void print_objects(ostream& out, cell* start, cell* end);
 | 
						|
  void print_datastack(ostream& out);
 | 
						|
  void print_retainstack(ostream& out);
 | 
						|
  void print_callstack(ostream& out);
 | 
						|
  void print_callstack_object(ostream& out, callstack* obj);
 | 
						|
  void dump_cell(ostream& out, cell x);
 | 
						|
  void dump_memory(ostream& out, cell from, cell to);
 | 
						|
  template <typename Generation>
 | 
						|
  void dump_generation(ostream& out, const char* name, Generation* gen);
 | 
						|
  void dump_generations(ostream& out);
 | 
						|
  void dump_objects(ostream& out, cell type);
 | 
						|
  void dump_edges(ostream& out);
 | 
						|
  void find_data_references(ostream& out, cell look_for_);
 | 
						|
  void dump_code_heap(ostream& out);
 | 
						|
  void factorbug_usage(bool advanced_p);
 | 
						|
  void factorbug();
 | 
						|
  void primitive_die();
 | 
						|
 | 
						|
  // arrays
 | 
						|
  inline void set_array_nth(array* array, cell slot, cell value);
 | 
						|
  array* allot_array(cell capacity, cell fill_);
 | 
						|
  void primitive_array();
 | 
						|
  cell allot_array_4(cell v1_, cell v2_, cell v3_, cell v4_);
 | 
						|
  void primitive_resize_array();
 | 
						|
  cell std_vector_to_array(std::vector<cell>& elements);
 | 
						|
 | 
						|
  // strings
 | 
						|
  string* allot_string_internal(cell capacity);
 | 
						|
  void fill_string(string* str_, cell start, cell capacity, cell fill);
 | 
						|
  string* allot_string(cell capacity, cell fill);
 | 
						|
  void primitive_string();
 | 
						|
  bool reallot_string_in_place_p(string* str, cell capacity);
 | 
						|
  string* reallot_string(string* str_, cell capacity);
 | 
						|
  void primitive_resize_string();
 | 
						|
  void primitive_set_string_nth_fast();
 | 
						|
 | 
						|
  // booleans
 | 
						|
  cell tag_boolean(cell untagged) {
 | 
						|
    return (untagged ? true_object : false_object);
 | 
						|
  }
 | 
						|
 | 
						|
  // byte arrays
 | 
						|
  byte_array* allot_byte_array(cell size);
 | 
						|
  void primitive_byte_array();
 | 
						|
  void primitive_uninitialized_byte_array();
 | 
						|
  void primitive_resize_byte_array();
 | 
						|
 | 
						|
  template <typename Type> byte_array* byte_array_from_value(Type* value);
 | 
						|
 | 
						|
  // tuples
 | 
						|
  void primitive_tuple();
 | 
						|
  void primitive_tuple_boa();
 | 
						|
 | 
						|
  // words
 | 
						|
  word* allot_word(cell name_, cell vocab_, cell hashcode_);
 | 
						|
  void primitive_word();
 | 
						|
  void primitive_word_code();
 | 
						|
  void primitive_word_optimized_p();
 | 
						|
  void primitive_wrapper();
 | 
						|
  void jit_compile_word(cell word_, cell def_, bool relocating);
 | 
						|
  cell find_all_words();
 | 
						|
  void compile_all_words();
 | 
						|
 | 
						|
  // math
 | 
						|
  void primitive_bignum_to_fixnum();
 | 
						|
  void primitive_bignum_to_fixnum_strict();
 | 
						|
  void primitive_float_to_fixnum();
 | 
						|
  void primitive_fixnum_divint();
 | 
						|
  void primitive_fixnum_divmod();
 | 
						|
  bignum* fixnum_to_bignum(fixnum);
 | 
						|
  bignum* cell_to_bignum(cell);
 | 
						|
  bignum* long_long_to_bignum(int64_t n);
 | 
						|
  bignum* ulong_long_to_bignum(uint64_t n);
 | 
						|
  inline fixnum sign_mask(fixnum x);
 | 
						|
  inline fixnum branchless_max(fixnum x, fixnum y);
 | 
						|
  inline fixnum branchless_abs(fixnum x);
 | 
						|
  void primitive_fixnum_shift();
 | 
						|
  void primitive_fixnum_to_bignum();
 | 
						|
  void primitive_float_to_bignum();
 | 
						|
  void primitive_bignum_eq();
 | 
						|
  void primitive_bignum_add();
 | 
						|
  void primitive_bignum_subtract();
 | 
						|
  void primitive_bignum_multiply();
 | 
						|
  void primitive_bignum_divint();
 | 
						|
  void primitive_bignum_divmod();
 | 
						|
  void primitive_bignum_mod();
 | 
						|
  void primitive_bignum_gcd();
 | 
						|
  void primitive_bignum_and();
 | 
						|
  void primitive_bignum_or();
 | 
						|
  void primitive_bignum_xor();
 | 
						|
  void primitive_bignum_shift();
 | 
						|
  void primitive_bignum_less();
 | 
						|
  void primitive_bignum_lesseq();
 | 
						|
  void primitive_bignum_greater();
 | 
						|
  void primitive_bignum_greatereq();
 | 
						|
  void primitive_bignum_not();
 | 
						|
  void primitive_bignum_bitp();
 | 
						|
  void primitive_bignum_log2();
 | 
						|
  inline cell unbox_array_size();
 | 
						|
  void primitive_fixnum_to_float();
 | 
						|
  void primitive_format_float();
 | 
						|
  void primitive_float_eq();
 | 
						|
  void primitive_float_add();
 | 
						|
  void primitive_float_subtract();
 | 
						|
  void primitive_float_multiply();
 | 
						|
  void primitive_float_divfloat();
 | 
						|
  void primitive_float_less();
 | 
						|
  void primitive_float_lesseq();
 | 
						|
  void primitive_float_greater();
 | 
						|
  void primitive_float_greatereq();
 | 
						|
  void primitive_float_bits();
 | 
						|
  void primitive_bits_float();
 | 
						|
  void primitive_double_bits();
 | 
						|
  void primitive_bits_double();
 | 
						|
  fixnum to_fixnum(cell tagged);
 | 
						|
  fixnum to_fixnum_strict(cell tagged);
 | 
						|
  cell to_cell(cell tagged);
 | 
						|
  cell from_signed_8(int64_t n);
 | 
						|
  int64_t to_signed_8(cell obj);
 | 
						|
  cell from_unsigned_8(uint64_t n);
 | 
						|
  uint64_t to_unsigned_8(cell obj);
 | 
						|
  float to_float(cell value);
 | 
						|
  double to_double(cell value);
 | 
						|
  inline void overflow_fixnum_add(fixnum x, fixnum y);
 | 
						|
  inline void overflow_fixnum_subtract(fixnum x, fixnum y);
 | 
						|
  inline void overflow_fixnum_multiply(fixnum x, fixnum y);
 | 
						|
  inline cell from_signed_cell(fixnum x);
 | 
						|
  inline cell from_unsigned_cell(cell x);
 | 
						|
  inline cell allot_float(double n);
 | 
						|
  inline bignum* float_to_bignum(cell tagged);
 | 
						|
  inline double untag_float(cell tagged);
 | 
						|
  inline double untag_float_check(cell tagged);
 | 
						|
  inline fixnum float_to_fixnum(cell tagged);
 | 
						|
  inline double fixnum_to_float(cell tagged);
 | 
						|
 | 
						|
  // tagged
 | 
						|
  template <typename Type> Type* untag_check(cell value);
 | 
						|
 | 
						|
  // io
 | 
						|
  void init_c_io();
 | 
						|
  void io_error_if_not_EINTR();
 | 
						|
  FILE* safe_fopen(char* filename, char* mode);
 | 
						|
  int safe_fgetc(FILE* stream);
 | 
						|
  size_t safe_fread(void* ptr, size_t size, size_t nitems, FILE* stream);
 | 
						|
  void safe_fputc(int c, FILE* stream);
 | 
						|
  size_t safe_fwrite(void* ptr, size_t size, size_t nitems, FILE* stream);
 | 
						|
  int safe_ftell(FILE* stream);
 | 
						|
  void safe_fseek(FILE* stream, off_t offset, int whence);
 | 
						|
  void safe_fflush(FILE* stream);
 | 
						|
  void safe_fclose(FILE* stream);
 | 
						|
  void primitive_fopen();
 | 
						|
  FILE* pop_file_handle();
 | 
						|
  FILE* peek_file_handle();
 | 
						|
  void primitive_fgetc();
 | 
						|
  void primitive_fread();
 | 
						|
  void primitive_fputc();
 | 
						|
  void primitive_fwrite();
 | 
						|
  void primitive_ftell();
 | 
						|
  void primitive_fseek();
 | 
						|
  void primitive_fflush();
 | 
						|
  void primitive_fclose();
 | 
						|
 | 
						|
  // code_block
 | 
						|
  cell compute_entry_point_address(cell obj);
 | 
						|
  cell compute_entry_point_pic_address(word* w, cell tagged_quot);
 | 
						|
  cell compute_entry_point_pic_address(cell w_);
 | 
						|
  cell compute_entry_point_pic_tail_address(cell w_);
 | 
						|
  cell compute_external_address(instruction_operand op);
 | 
						|
 | 
						|
  cell code_block_owner(code_block* compiled);
 | 
						|
  void update_word_references(code_block* compiled, bool reset_inline_caches);
 | 
						|
  void undefined_symbol();
 | 
						|
  cell compute_dlsym_address(array* literals, cell index, bool toc);
 | 
						|
  cell compute_vm_address(cell arg);
 | 
						|
  cell lookup_external_address(relocation_type rel_type,
 | 
						|
                               code_block* compiled,
 | 
						|
                               array* parameters,
 | 
						|
                               cell index);
 | 
						|
  cell compute_here_address(cell arg, cell offset, code_block* compiled);
 | 
						|
  void initialize_code_block(code_block* compiled, cell literals);
 | 
						|
  void initialize_code_block(code_block* compiled);
 | 
						|
  void fixup_labels(array* labels, code_block* compiled);
 | 
						|
  code_block* allot_code_block(cell size, code_block_type type);
 | 
						|
  code_block* add_code_block(code_block_type type, cell code_, cell labels_,
 | 
						|
                             cell owner_, cell relocation_, cell parameters_,
 | 
						|
                             cell literals_, cell frame_size_untagged);
 | 
						|
 | 
						|
  //code heap
 | 
						|
  template <typename Iterator> void each_code_block(Iterator& iter) {
 | 
						|
    code->allocator->iterate(iter);
 | 
						|
  }
 | 
						|
 | 
						|
  void update_code_heap_words(bool reset_inline_caches);
 | 
						|
  void initialize_code_blocks();
 | 
						|
  void primitive_modify_code_heap();
 | 
						|
  void primitive_code_room();
 | 
						|
  void primitive_strip_stack_traces();
 | 
						|
  cell code_blocks();
 | 
						|
  void primitive_code_blocks();
 | 
						|
 | 
						|
  // callbacks
 | 
						|
  void init_callbacks(cell size);
 | 
						|
  void primitive_free_callback();
 | 
						|
  void primitive_callback();
 | 
						|
  void primitive_callback_room();
 | 
						|
 | 
						|
  // image
 | 
						|
  void init_objects(image_header* h);
 | 
						|
  void load_data_heap(FILE* file, image_header* h, vm_parameters* p);
 | 
						|
  void load_code_heap(FILE* file, image_header* h, vm_parameters* p);
 | 
						|
  bool save_image(const vm_char* saving_filename, const vm_char* filename);
 | 
						|
  void primitive_save_image();
 | 
						|
  void fixup_data(cell data_offset, cell code_offset);
 | 
						|
  void fixup_code(cell data_offset, cell code_offset);
 | 
						|
  FILE* open_image(vm_parameters* p);
 | 
						|
  void load_image(vm_parameters* p);
 | 
						|
  bool read_embedded_image_footer(FILE* file, embedded_image_footer* footer);
 | 
						|
  bool embedded_image_p();
 | 
						|
 | 
						|
  template <typename Iterator, typename Fixup>
 | 
						|
  void iterate_callstack_object(callstack* stack_, Iterator& iterator,
 | 
						|
                                Fixup& fixup);
 | 
						|
  template <typename Iterator>
 | 
						|
  void iterate_callstack_object(callstack* stack_, Iterator& iterator);
 | 
						|
 | 
						|
  callstack* allot_callstack(cell size);
 | 
						|
  cell second_from_top_stack_frame(context* ctx);
 | 
						|
  cell capture_callstack(context* ctx);
 | 
						|
  void primitive_callstack_for();
 | 
						|
  void primitive_callstack_to_array();
 | 
						|
  void primitive_innermost_stack_frame_executing();
 | 
						|
  void primitive_innermost_stack_frame_scan();
 | 
						|
  void primitive_set_innermost_stack_frame_quotation();
 | 
						|
  void primitive_callstack_bounds();
 | 
						|
 | 
						|
  template <typename Iterator, typename Fixup>
 | 
						|
  void iterate_callstack(context* ctx, Iterator& iterator, Fixup& fixup);
 | 
						|
  template <typename Iterator>
 | 
						|
  void iterate_callstack(context* ctx, Iterator& iterator);
 | 
						|
 | 
						|
  // cpu-*
 | 
						|
  void dispatch_signal_handler(cell* sp, cell* pc, cell newpc);
 | 
						|
#if defined(FACTOR_X86) || defined(FACTOR_64)
 | 
						|
  void dispatch_non_resumable_signal(cell* sp, cell* pc,
 | 
						|
                                     cell handler,
 | 
						|
                                     cell limit);
 | 
						|
  void dispatch_resumable_signal(cell* sp, cell* pc, cell handler);
 | 
						|
#endif
 | 
						|
 | 
						|
  // alien
 | 
						|
  char* pinned_alien_offset(cell obj);
 | 
						|
  cell allot_alien(cell delegate_, cell displacement);
 | 
						|
  cell allot_alien(cell address);
 | 
						|
  void primitive_displaced_alien();
 | 
						|
  void primitive_alien_address();
 | 
						|
  void* alien_pointer();
 | 
						|
  void primitive_dlopen();
 | 
						|
  void primitive_dlsym();
 | 
						|
  void primitive_dlsym_raw();
 | 
						|
  void primitive_dlclose();
 | 
						|
  void primitive_dll_validp();
 | 
						|
  char* alien_offset(cell obj);
 | 
						|
 | 
						|
  // quotations
 | 
						|
  void primitive_jit_compile();
 | 
						|
  cell lazy_jit_compile_entry_point();
 | 
						|
  void primitive_array_to_quotation();
 | 
						|
  void primitive_quotation_code();
 | 
						|
  code_block* jit_compile_quotation(cell owner_, cell quot_, bool relocating);
 | 
						|
  void jit_compile_quotation(cell quot_, bool relocating);
 | 
						|
  fixnum quot_code_offset_to_scan(cell quot_, cell offset);
 | 
						|
  cell lazy_jit_compile(cell quot);
 | 
						|
  bool quotation_compiled_p(quotation* quot);
 | 
						|
  void primitive_quotation_compiled_p();
 | 
						|
  void initialize_all_quotations();
 | 
						|
 | 
						|
  // dispatch
 | 
						|
  cell search_lookup_alist(cell table, cell klass);
 | 
						|
  cell search_lookup_hash(cell table, cell klass, cell hashcode);
 | 
						|
  cell nth_superclass(tuple_layout* layout, fixnum echelon);
 | 
						|
  cell nth_hashcode(tuple_layout* layout, fixnum echelon);
 | 
						|
  cell lookup_tuple_method(cell obj, cell methods);
 | 
						|
  cell lookup_method(cell obj, cell methods);
 | 
						|
  void primitive_lookup_method();
 | 
						|
  cell object_class(cell obj);
 | 
						|
  cell method_cache_hashcode(cell klass, array* array);
 | 
						|
  void update_method_cache(cell cache, cell klass, cell method);
 | 
						|
  void primitive_mega_cache_miss();
 | 
						|
  void primitive_reset_dispatch_stats();
 | 
						|
  void primitive_dispatch_stats();
 | 
						|
 | 
						|
  // inline cache
 | 
						|
  void init_inline_caching(int max_size);
 | 
						|
  void deallocate_inline_cache(cell return_address);
 | 
						|
  cell determine_inline_cache_type(array* cache_entries);
 | 
						|
  void update_pic_count(cell type);
 | 
						|
  code_block* compile_inline_cache(fixnum index, cell generic_word_,
 | 
						|
                                   cell methods_, cell cache_entries_,
 | 
						|
                                   bool tail_call_p);
 | 
						|
  cell inline_cache_size(cell cache_entries);
 | 
						|
  cell add_inline_cache_entry(cell cache_entries_, cell klass_, cell method_);
 | 
						|
  void update_pic_transitions(cell pic_size);
 | 
						|
  cell inline_cache_miss(cell return_address);
 | 
						|
 | 
						|
  // entry points
 | 
						|
  void c_to_factor(cell quot);
 | 
						|
  void unwind_native_frames(cell quot, cell to);
 | 
						|
  cell get_fpu_state();
 | 
						|
  void set_fpu_state(cell state);
 | 
						|
 | 
						|
  // factor
 | 
						|
  void default_parameters(vm_parameters* p);
 | 
						|
  bool factor_arg(const vm_char* str, const vm_char* arg, cell* value);
 | 
						|
  void init_parameters_from_args(vm_parameters* p, int argc, vm_char** argv);
 | 
						|
  void prepare_boot_image();
 | 
						|
  void init_factor(vm_parameters* p);
 | 
						|
  void pass_args_to_factor(int argc, vm_char** argv);
 | 
						|
  void start_factor(vm_parameters* p);
 | 
						|
  void stop_factor();
 | 
						|
  void start_embedded_factor(vm_parameters* p);
 | 
						|
  void start_standalone_factor(int argc, vm_char** argv);
 | 
						|
  char* factor_eval_string(char* string);
 | 
						|
  void factor_eval_free(char* result);
 | 
						|
  void factor_yield();
 | 
						|
  void factor_sleep(long us);
 | 
						|
 | 
						|
  // os-*
 | 
						|
  void primitive_existsp();
 | 
						|
  void move_file(const vm_char* path1, const vm_char* path2);
 | 
						|
  void init_ffi();
 | 
						|
  void ffi_dlopen(dll* dll);
 | 
						|
  cell ffi_dlsym(dll* dll, symbol_char* symbol);
 | 
						|
  cell ffi_dlsym_raw(dll* dll, symbol_char* symbol);
 | 
						|
  void ffi_dlclose(dll* dll);
 | 
						|
  void c_to_factor_toplevel(cell quot);
 | 
						|
  void init_signals();
 | 
						|
  void start_sampling_profiler_timer();
 | 
						|
  void end_sampling_profiler_timer();
 | 
						|
 | 
						|
// os-windows
 | 
						|
#if defined(WINDOWS)
 | 
						|
  HANDLE sampler_thread;
 | 
						|
  void sampler_thread_loop();
 | 
						|
 | 
						|
  const vm_char* vm_executable_path();
 | 
						|
  const vm_char* default_image_path();
 | 
						|
  BOOL windows_stat(vm_char* path);
 | 
						|
 | 
						|
  LONG exception_handler(PEXCEPTION_RECORD e, void* frame, PCONTEXT c,
 | 
						|
                         void* dispatch);
 | 
						|
 | 
						|
#else  // UNIX
 | 
						|
  void dispatch_signal(void* uap, void(handler)());
 | 
						|
  void unix_init_signals();
 | 
						|
#endif
 | 
						|
 | 
						|
#ifdef __APPLE__
 | 
						|
  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);
 | 
						|
#endif
 | 
						|
 | 
						|
  factor_vm(THREADHANDLE thread_id);
 | 
						|
  ~factor_vm();
 | 
						|
};
 | 
						|
 | 
						|
}
 |