factor/vm/vm.hpp

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#include "vm-data.hpp"
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namespace factor
{
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struct factorvm : factorvmdata {
// segments
inline cell align_page(cell a);
// contexts
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void reset_datastack();
void reset_retainstack();
void fix_stacks();
void save_stacks();
context *alloc_context();
void dealloc_context(context *old_context);
void nest_stacks();
void unnest_stacks();
void init_stacks(cell ds_size_, cell rs_size_);
bool stack_to_array(cell bottom, cell top);
cell array_to_stack(array *array, cell bottom);
inline void vmprim_datastack();
inline void vmprim_retainstack();
inline void vmprim_set_datastack();
inline void vmprim_set_retainstack();
inline void vmprim_check_datastack();
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// run
inline void vmprim_getenv();
inline void vmprim_setenv();
inline void vmprim_exit();
inline void vmprim_micros();
inline void vmprim_sleep();
inline void vmprim_set_slot();
inline void vmprim_load_locals();
cell clone_object(cell obj_);
inline void vmprim_clone();
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// profiler
void init_profiler();
code_block *compile_profiling_stub(cell word_);
void set_profiling(bool profiling);
inline void vmprim_profiling();
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// errors
void out_of_memory();
void critical_error(const char* msg, cell tagged);
void throw_error(cell error, stack_frame *callstack_top);
void not_implemented_error();
bool in_page(cell fault, cell area, cell area_size, int offset);
void memory_protection_error(cell addr, stack_frame *native_stack);
void signal_error(int signal, stack_frame *native_stack);
void divide_by_zero_error();
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void fp_trap_error(unsigned int fpu_status, stack_frame *signal_callstack_top);
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inline void vmprim_call_clear();
inline void vmprim_unimplemented();
void memory_signal_handler_impl();
void misc_signal_handler_impl();
void fp_signal_handler_impl();
void type_error(cell type, cell tagged);
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void general_error(vm_error_type error, cell arg1, cell arg2, stack_frame *native_stack);
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//callstack
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// bignum
int bignum_equal_p(bignum * x, bignum * y);
enum bignum_comparison bignum_compare(bignum * x, bignum * y);
bignum *bignum_add(bignum * x, bignum * y);
bignum *bignum_subtract(bignum * x, bignum * y);
bignum *bignum_multiply(bignum * x, bignum * y);
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void bignum_divide(bignum * numerator, bignum * denominator, bignum * * quotient, bignum * * remainder);
bignum *bignum_quotient(bignum * numerator, bignum * denominator);
bignum *bignum_remainder(bignum * numerator, bignum * denominator);
cell bignum_to_cell(bignum * bignum);
fixnum bignum_to_fixnum(bignum * bignum);
s64 bignum_to_long_long(bignum * bignum);
u64 bignum_to_ulong_long(bignum * bignum);
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double bignum_to_double(bignum * bignum);
bignum *double_to_bignum(double x);
int bignum_equal_p_unsigned(bignum * x, bignum * y);
enum bignum_comparison bignum_compare_unsigned(bignum * x, bignum * y);
bignum *bignum_add_unsigned(bignum * x, bignum * y, int negative_p);
bignum *bignum_subtract_unsigned(bignum * x, bignum * y);
bignum *bignum_multiply_unsigned(bignum * x, bignum * y, int negative_p);
bignum *bignum_multiply_unsigned_small_factor(bignum * x, bignum_digit_type y,int negative_p);
void bignum_destructive_add(bignum * bignum, bignum_digit_type n);
void bignum_destructive_scale_up(bignum * bignum, bignum_digit_type factor);
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void bignum_divide_unsigned_large_denominator(bignum * numerator, bignum * denominator,
bignum * * quotient, 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, bignum_digit_type * v_end,
bignum_digit_type guess, bignum_digit_type * u_start);
void bignum_divide_unsigned_medium_denominator(bignum * numerator,bignum_digit_type denominator,
bignum * * quotient, bignum * * remainder,int q_negative_p, int r_negative_p);
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void bignum_destructive_normalization(bignum * source, bignum * target, int shift_left);
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void bignum_destructive_unnormalization(bignum * bignum, int shift_right);
bignum_digit_type bignum_digit_divide(bignum_digit_type uh, bignum_digit_type ul,
bignum_digit_type v, bignum_digit_type * q) /* return value */;
bignum_digit_type bignum_digit_divide_subtract(bignum_digit_type v1, bignum_digit_type v2,
bignum_digit_type guess, bignum_digit_type * u);
void bignum_divide_unsigned_small_denominator(bignum * numerator, bignum_digit_type denominator,
bignum * * quotient, bignum * * remainder,int q_negative_p, int r_negative_p);
bignum_digit_type bignum_destructive_scale_down(bignum * bignum, bignum_digit_type denominator);
bignum * bignum_remainder_unsigned_small_denominator(bignum * n, bignum_digit_type d, int negative_p);
bignum *bignum_digit_to_bignum(bignum_digit_type digit, int negative_p);
bignum *allot_bignum(bignum_length_type length, int negative_p);
bignum * allot_bignum_zeroed(bignum_length_type length, int negative_p);
bignum *bignum_shorten_length(bignum * bignum, bignum_length_type length);
bignum *bignum_trim(bignum * bignum);
bignum *bignum_new_sign(bignum * x, int negative_p);
bignum *bignum_maybe_new_sign(bignum * x, int negative_p);
void bignum_destructive_copy(bignum * source, bignum * target);
bignum *bignum_bitwise_not(bignum * x);
bignum *bignum_arithmetic_shift(bignum * arg1, fixnum n);
bignum *bignum_bitwise_and(bignum * arg1, bignum * arg2);
bignum *bignum_bitwise_ior(bignum * arg1, bignum * arg2);
bignum *bignum_bitwise_xor(bignum * arg1, bignum * arg2);
bignum *bignum_magnitude_ash(bignum * arg1, fixnum n);
bignum *bignum_pospos_bitwise_op(int op, bignum * arg1, bignum * arg2);
bignum *bignum_posneg_bitwise_op(int op, bignum * arg1, bignum * arg2);
bignum *bignum_negneg_bitwise_op(int op, bignum * arg1, bignum * arg2);
void bignum_negate_magnitude(bignum * arg);
bignum *bignum_integer_length(bignum * x);
int bignum_logbitp(int shift, bignum * arg);
int bignum_unsigned_logbitp(int shift, bignum * bignum);
bignum *digit_stream_to_bignum(unsigned int n_digits, unsigned int (*producer)(unsigned int, factorvm *), unsigned int radix, int negative_p);
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//data_heap
cell init_zone(zone *z, cell size, cell start);
void init_card_decks();
data_heap *alloc_data_heap(cell gens, cell young_size,cell aging_size,cell tenured_size);
data_heap *grow_data_heap(data_heap *data, cell requested_bytes);
void dealloc_data_heap(data_heap *data);
void clear_cards(cell from, cell to);
void clear_decks(cell from, cell to);
void clear_allot_markers(cell from, cell to);
void reset_generation(cell i);
void reset_generations(cell from, cell to);
void set_data_heap(data_heap *data_);
void init_data_heap(cell gens,cell young_size,cell aging_size,cell tenured_size,bool secure_gc_);
cell untagged_object_size(object *pointer);
cell unaligned_object_size(object *pointer);
inline void vmprim_size();
cell binary_payload_start(object *pointer);
inline void vmprim_data_room();
void begin_scan();
void end_scan();
inline void vmprim_begin_scan();
cell next_object();
inline void vmprim_next_object();
inline void vmprim_end_scan();
template<typename T> void each_object(T &functor);
cell find_all_words();
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cell object_size(cell tagged);
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//write barrier
inline card *addr_to_card(cell a);
inline cell card_to_addr(card *c);
inline cell card_offset(card *c);
inline card_deck *addr_to_deck(cell a);
inline cell deck_to_addr(card_deck *c);
inline card *deck_to_card(card_deck *d);
inline card *addr_to_allot_marker(object *a);
inline void write_barrier(object *obj);
inline void allot_barrier(object *address);
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//data_gc
void init_data_gc();
object *copy_untagged_object_impl(object *pointer, cell size);
object *copy_object_impl(object *untagged);
bool should_copy_p(object *untagged);
object *resolve_forwarding(object *untagged);
template <typename T> T *copy_untagged_object(T *untagged);
cell copy_object(cell pointer);
void copy_handle(cell *handle);
void copy_card(card *ptr, cell gen, cell here);
void copy_card_deck(card_deck *deck, cell gen, card mask, card unmask);
void copy_gen_cards(cell gen);
void copy_cards();
void copy_stack_elements(segment *region, cell top);
void copy_registered_locals();
void copy_registered_bignums();
void copy_roots();
cell copy_next_from_nursery(cell scan);
cell copy_next_from_aging(cell scan);
cell copy_next_from_tenured(cell scan);
void copy_reachable_objects(cell scan, cell *end);
void begin_gc(cell requested_bytes);
void end_gc(cell gc_elapsed);
void garbage_collection(cell gen,bool growing_data_heap_,cell requested_bytes);
void gc();
inline void vmprim_gc();
inline void vmprim_gc_stats();
void clear_gc_stats();
inline void vmprim_become();
void inline_gc(cell *gc_roots_base, cell gc_roots_size);
inline bool collecting_accumulation_gen_p();
inline object *allot_zone(zone *z, cell a);
inline object *allot_object(header header, cell size);
template <typename TYPE> TYPE *allot(cell size);
inline void check_data_pointer(object *pointer);
inline void check_tagged_pointer(cell tagged);
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inline void vmprim_clear_gc_stats();
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// generic arrays
template <typename T> T *allot_array_internal(cell capacity);
template <typename T> bool reallot_array_in_place_p(T *array, cell capacity);
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template <typename TYPE> TYPE *reallot_array(TYPE *array_, cell capacity);
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//debug
void print_chars(string* str);
void print_word(word* word, cell nesting);
void print_factor_string(string* str);
void print_array(array* array, cell nesting);
void print_tuple(tuple *tuple, cell nesting);
void print_nested_obj(cell obj, fixnum nesting);
void print_obj(cell obj);
void print_objects(cell *start, cell *end);
void print_datastack();
void print_retainstack();
void print_stack_frame(stack_frame *frame);
void print_callstack();
void dump_cell(cell x);
void dump_memory(cell from, cell to);
void dump_zone(zone *z);
void dump_generations();
void dump_objects(cell type);
void find_data_references_step(cell *scan);
void find_data_references(cell look_for_);
void dump_code_heap();
void factorbug();
inline void vmprim_die();
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//arrays
array *allot_array(cell capacity, cell fill_);
inline void vmprim_array();
cell allot_array_1(cell obj_);
cell allot_array_2(cell v1_, cell v2_);
cell allot_array_4(cell v1_, cell v2_, cell v3_, cell v4_);
inline void vmprim_resize_array();
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inline void set_array_nth(array *array, cell slot, cell value);
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//strings
cell string_nth(string* str, cell index);
void set_string_nth_fast(string *str, cell index, cell ch);
void set_string_nth_slow(string *str_, cell index, cell ch);
void set_string_nth(string *str, cell index, cell ch);
string *allot_string_internal(cell capacity);
void fill_string(string *str_, cell start, cell capacity, cell fill);
string *allot_string(cell capacity, cell fill);
inline void vmprim_string();
bool reallot_string_in_place_p(string *str, cell capacity);
string* reallot_string(string *str_, cell capacity);
inline void vmprim_resize_string();
inline void vmprim_string_nth();
inline void vmprim_set_string_nth_fast();
inline void vmprim_set_string_nth_slow();
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//booleans
void box_boolean(bool value);
bool to_boolean(cell value);
inline cell tag_boolean(cell untagged);
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//byte arrays
byte_array *allot_byte_array(cell size);
inline void vmprim_byte_array();
inline void vmprim_uninitialized_byte_array();
inline void vmprim_resize_byte_array();
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//tuples
tuple *allot_tuple(cell layout_);
inline void vmprim_tuple();
inline void vmprim_tuple_boa();
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//words
word *allot_word(cell vocab_, cell name_);
inline void vmprim_word();
inline void vmprim_word_xt();
void update_word_xt(cell w_);
inline void vmprim_optimized_p();
inline void vmprim_wrapper();
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//math
inline void vmprim_bignum_to_fixnum();
inline void vmprim_float_to_fixnum();
inline void vmprim_fixnum_divint();
inline void vmprim_fixnum_divmod();
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bignum *fixnum_to_bignum(fixnum);
bignum *cell_to_bignum(cell);
bignum *long_long_to_bignum(s64 n);
bignum *ulong_long_to_bignum(u64 n);
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inline fixnum sign_mask(fixnum x);
inline fixnum branchless_max(fixnum x, fixnum y);
inline fixnum branchless_abs(fixnum x);
inline void vmprim_fixnum_shift();
inline void vmprim_fixnum_to_bignum();
inline void vmprim_float_to_bignum();
inline void vmprim_bignum_eq();
inline void vmprim_bignum_add();
inline void vmprim_bignum_subtract();
inline void vmprim_bignum_multiply();
inline void vmprim_bignum_divint();
inline void vmprim_bignum_divmod();
inline void vmprim_bignum_mod();
inline void vmprim_bignum_and();
inline void vmprim_bignum_or();
inline void vmprim_bignum_xor();
inline void vmprim_bignum_shift();
inline void vmprim_bignum_less();
inline void vmprim_bignum_lesseq();
inline void vmprim_bignum_greater();
inline void vmprim_bignum_greatereq();
inline void vmprim_bignum_not();
inline void vmprim_bignum_bitp();
inline void vmprim_bignum_log2();
unsigned int bignum_producer(unsigned int digit);
inline void vmprim_byte_array_to_bignum();
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cell unbox_array_size();
inline void vmprim_fixnum_to_float();
inline void vmprim_bignum_to_float();
inline void vmprim_str_to_float();
inline void vmprim_float_to_str();
inline void vmprim_float_eq();
inline void vmprim_float_add();
inline void vmprim_float_subtract();
inline void vmprim_float_multiply();
inline void vmprim_float_divfloat();
inline void vmprim_float_mod();
inline void vmprim_float_less();
inline void vmprim_float_lesseq();
inline void vmprim_float_greater();
inline void vmprim_float_greatereq();
inline void vmprim_float_bits();
inline void vmprim_bits_float();
inline void vmprim_double_bits();
inline void vmprim_bits_double();
fixnum to_fixnum(cell tagged);
cell to_cell(cell tagged);
void box_signed_1(s8 n);
void box_unsigned_1(u8 n);
void box_signed_2(s16 n);
void box_unsigned_2(u16 n);
void box_signed_4(s32 n);
void box_unsigned_4(u32 n);
void box_signed_cell(fixnum integer);
void box_unsigned_cell(cell cell);
void box_signed_8(s64 n);
s64 to_signed_8(cell obj);
void box_unsigned_8(u64 n);
u64 to_unsigned_8(cell obj);
void box_float(float flo);
float to_float(cell value);
void box_double(double flo);
double to_double(cell value);
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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);
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inline cell allot_integer(fixnum x);
inline cell allot_cell(cell x);
inline cell allot_float(double n);
inline bignum *float_to_bignum(cell tagged);
inline double bignum_to_float(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);
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template <typename T> T *untag_check(cell value);
template <typename T> T *untag(cell value);
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//io
void init_c_io();
void io_error();
inline void vmprim_fopen();
inline void vmprim_fgetc();
inline void vmprim_fread();
inline void vmprim_fputc();
inline void vmprim_fwrite();
inline void vmprim_fseek();
inline void vmprim_fflush();
inline void vmprim_fclose();
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//code_gc
void clear_free_list(heap *heap);
void new_heap(heap *heap, cell size);
void add_to_free_list(heap *heap, free_heap_block *block);
void build_free_list(heap *heap, cell size);
void assert_free_block(free_heap_block *block);
free_heap_block *find_free_block(heap *heap, cell size);
free_heap_block *split_free_block(heap *heap, free_heap_block *block, cell size);
heap_block *heap_allot(heap *heap, cell size);
void heap_free(heap *heap, heap_block *block);
void mark_block(heap_block *block);
void unmark_marked(heap *heap);
void free_unmarked(heap *heap, heap_iterator iter);
void heap_usage(heap *heap, cell *used, cell *total_free, cell *max_free);
cell heap_size(heap *heap);
cell compute_heap_forwarding(heap *heap, unordered_map<heap_block *,char *> &forwarding);
void compact_heap(heap *heap, unordered_map<heap_block *,char *> &forwarding);
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//code_block
relocation_type relocation_type_of(relocation_entry r);
relocation_class relocation_class_of(relocation_entry r);
cell relocation_offset_of(relocation_entry r);
void flush_icache_for(code_block *block);
int number_of_parameters(relocation_type type);
void *object_xt(cell obj);
void *xt_pic(word *w, cell tagged_quot);
void *word_xt_pic(word *w);
void *word_xt_pic_tail(word *w);
void undefined_symbol();
void *get_rel_symbol(array *literals, cell index);
cell compute_relocation(relocation_entry rel, cell index, code_block *compiled);
void iterate_relocations(code_block *compiled, relocation_iterator iter);
void store_address_2_2(cell *ptr, cell value);
void store_address_masked(cell *ptr, fixnum value, cell mask, fixnum shift);
void store_address_in_code_block(cell klass, cell offset, fixnum absolute_value);
void update_literal_references_step(relocation_entry rel, cell index, code_block *compiled);
void update_literal_references(code_block *compiled);
void copy_literal_references(code_block *compiled);
void relocate_code_block_step(relocation_entry rel, cell index, code_block *compiled);
void update_word_references_step(relocation_entry rel, cell index, code_block *compiled);
void update_word_references(code_block *compiled);
void update_literal_and_word_references(code_block *compiled);
void check_code_address(cell address);
void mark_code_block(code_block *compiled);
void mark_stack_frame_step(stack_frame *frame);
void mark_active_blocks(context *stacks);
void mark_object_code_block(object *object);
void relocate_code_block(code_block *compiled);
void fixup_labels(array *labels, code_block *compiled);
code_block *allot_code_block(cell size);
code_block *add_code_block(cell type,cell code_,cell labels_,cell relocation_,cell literals_);
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inline bool stack_traces_p()
{
return userenv[STACK_TRACES_ENV] != F;
}
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//code_heap
void init_code_heap(cell size);
bool in_code_heap_p(cell ptr);
void jit_compile_word(cell word_, cell def_, bool relocate);
void iterate_code_heap(code_heap_iterator iter);
void copy_code_heap_roots();
void update_code_heap_words();
inline void vmprim_modify_code_heap();
inline void vmprim_code_room();
code_block *forward_xt(code_block *compiled);
void forward_frame_xt(stack_frame *frame);
void forward_object_xts();
void fixup_object_xts();
void compact_code_heap();
inline void check_code_pointer(cell ptr);
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//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 *filename);
inline void vmprim_save_image();
inline void vmprim_save_image_and_exit();
void data_fixup(cell *cell);
template <typename T> void code_fixup(T **handle);
void fixup_word(word *word);
void fixup_quotation(quotation *quot);
void fixup_alien(alien *d);
void fixup_stack_frame(stack_frame *frame);
void fixup_callstack_object(callstack *stack);
void relocate_object(object *object);
void relocate_data();
void fixup_code_block(code_block *compiled);
void relocate_code();
void load_image(vm_parameters *p);
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//callstack
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template<typename T> void iterate_callstack_object(callstack *stack_, T &iterator);
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void check_frame(stack_frame *frame);
callstack *allot_callstack(cell size);
stack_frame *fix_callstack_top(stack_frame *top, stack_frame *bottom);
stack_frame *capture_start();
inline void vmprim_callstack();
inline void vmprim_set_callstack();
code_block *frame_code(stack_frame *frame);
cell frame_type(stack_frame *frame);
cell frame_executing(stack_frame *frame);
stack_frame *frame_successor(stack_frame *frame);
cell frame_scan(stack_frame *frame);
inline void vmprim_callstack_to_array();
stack_frame *innermost_stack_frame(callstack *stack);
stack_frame *innermost_stack_frame_quot(callstack *callstack);
inline void vmprim_innermost_stack_frame_executing();
inline void vmprim_innermost_stack_frame_scan();
inline void vmprim_set_innermost_stack_frame_quot();
void save_callstack_bottom(stack_frame *callstack_bottom);
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template<typename T> void iterate_callstack(cell top, cell bottom, T &iterator);
inline void do_slots(cell obj, void (* iter)(cell *,factorvm*));
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//alien
char *pinned_alien_offset(cell obj);
cell allot_alien(cell delegate_, cell displacement);
inline void vmprim_displaced_alien();
inline void vmprim_alien_address();
void *alien_pointer();
inline void vmprim_dlopen();
inline void vmprim_dlsym();
inline void vmprim_dlclose();
inline void vmprim_dll_validp();
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inline void vmprim_vm_ptr();
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char *alien_offset(cell obj);
char *unbox_alien();
void box_alien(void *ptr);
void to_value_struct(cell src, void *dest, cell size);
void box_value_struct(void *src, cell size);
void box_small_struct(cell x, cell y, cell size);
void box_medium_struct(cell x1, cell x2, cell x3, cell x4, cell size);
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//quotations
inline void vmprim_jit_compile();
inline void vmprim_array_to_quotation();
inline void vmprim_quotation_xt();
void set_quot_xt(quotation *quot, code_block *code);
void jit_compile(cell quot_, bool relocating);
void compile_all_words();
fixnum quot_code_offset_to_scan(cell quot_, cell offset);
cell lazy_jit_compile_impl(cell quot_, stack_frame *stack);
inline void vmprim_quot_compiled_p();
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//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_hi_tag_method(cell obj, cell methods);
cell lookup_hairy_method(cell obj, cell methods);
cell lookup_method(cell obj, cell methods);
inline void vmprim_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);
inline void vmprim_mega_cache_miss();
inline void vmprim_reset_dispatch_stats();
inline void vmprim_dispatch_stats();
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//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);
void *megamorphic_call_stub(cell generic_word);
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);
void *inline_cache_miss(cell return_address);
inline void vmprim_reset_inline_cache_stats();
inline void vmprim_inline_cache_stats();
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//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 do_stage1_init();
void init_factor(vm_parameters *p);
void pass_args_to_factor(int argc, vm_char **argv);
void start_factor(vm_parameters *p);
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);
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// os-*
inline void vmprim_existsp();
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void init_ffi();
void ffi_dlopen(dll *dll);
void *ffi_dlsym(dll *dll, symbol_char *symbol);
void ffi_dlclose(dll *dll);
segment *alloc_segment(cell size);
void c_to_factor_toplevel(cell quot);
// os-windows
#if defined(WINDOWS)
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void sleep_micros(u64 usec);
long getpagesize();
void dealloc_segment(segment *block);
const vm_char *vm_executable_path();
const vm_char *default_image_path();
void windows_image_path(vm_char *full_path, vm_char *temp_path, unsigned int length);
bool windows_stat(vm_char *path);
#if defined(WINNT)
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void open_console();
LONG exception_handler(PEXCEPTION_POINTERS pe);
// next method here:
#endif
#else // UNIX
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void memory_signal_handler(int signal, siginfo_t *siginfo, void *uap);
void misc_signal_handler(int signal, siginfo_t *siginfo, void *uap);
stack_frame *uap_stack_pointer(void *uap);
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#endif
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void print_vm_data();
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};
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#define FACTOR_SINGLE_THREADED_SINGLETON
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#ifdef FACTOR_SINGLE_THREADED_SINGLETON
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/* calls are dispatched using the singleton vm ptr */
extern factorvm *vm;
#define PRIMITIVE_GETVM() vm
#define PRIMITIVE_OVERFLOW_GETVM() vm
#define VM_PTR vm
#define ASSERTVM()
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#define SIGNAL_VM_PTR() vm
#endif
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#ifdef FACTOR_SINGLE_THREADED_TESTING
/* calls are dispatched as per multithreaded, but checked against singleton */
extern factorvm *vm;
#define PRIMITIVE_GETVM() ((factorvm*)myvm)
#define PRIMITIVE_OVERFLOW_GETVM() vm
#define VM_PTR myvm
#define ASSERTVM() assert(vm==myvm)
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#define SIGNAL_VM_PTR() tls_vm()
#endif
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#ifdef FACTOR_MULTITHREADED_TLS
/* uses thread local storage to obtain vm ptr */
#define PRIMITIVE_GETVM() tls_vm()
#define PRIMITIVE_OVERFLOW_GETVM() tls_vm()
#define VM_PTR tls_vm()
#define ASSERTVM()
#define SIGNAL_VM_PTR() tls_vm()
#endif
#ifdef FACTOR_MULTITHREADED
#define PRIMITIVE_GETVM() ((factorvm*)myvm)
#define PRIMITIVE_OVERFLOW_GETVM() ((factorvm*)myvm)
#define VM_PTR myvm
#define ASSERTVM()
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#define SIGNAL_VM_PTR() tls_vm()
#endif
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}