499 lines
10 KiB
C
Executable File
499 lines
10 KiB
C
Executable File
#include "master.h"
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static bool full_output;
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void print_chars(F_STRING* str)
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{
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CELL i;
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for(i = 0; i < string_capacity(str); i++)
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putchar(string_nth(str,i));
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}
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void print_word(F_WORD* word, CELL nesting)
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{
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if(type_of(word->vocabulary) == STRING_TYPE)
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{
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print_chars(untag_string(word->vocabulary));
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print_string(":");
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}
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if(type_of(word->name) == STRING_TYPE)
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print_chars(untag_string(word->name));
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else
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{
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print_string("#<not a string: ");
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print_nested_obj(word->name,nesting);
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print_string(">");
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}
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}
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void print_factor_string(F_STRING* str)
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{
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putchar('"');
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print_chars(str);
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putchar('"');
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}
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void print_array(F_ARRAY* array, CELL nesting)
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{
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CELL length = array_capacity(array);
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CELL i;
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bool trimmed;
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if(length > 10 && !full_output)
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{
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trimmed = true;
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length = 10;
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}
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else
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trimmed = false;
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for(i = 0; i < length; i++)
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{
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print_string(" ");
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print_nested_obj(array_nth(array,i),nesting);
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}
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if(trimmed)
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print_string("...");
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}
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void print_tuple(F_TUPLE* tuple, CELL nesting)
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{
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F_TUPLE_LAYOUT *layout = untag_object(tuple->layout);
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CELL length = to_fixnum(layout->size);
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print_string(" ");
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print_nested_obj(layout->class,nesting);
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CELL i;
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bool trimmed;
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if(length > 10 && !full_output)
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{
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trimmed = true;
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length = 10;
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}
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else
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trimmed = false;
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for(i = 0; i < length; i++)
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{
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print_string(" ");
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print_nested_obj(tuple_nth(tuple,i),nesting);
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}
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if(trimmed)
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print_string("...");
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}
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void print_nested_obj(CELL obj, F_FIXNUM nesting)
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{
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if(nesting <= 0 && !full_output)
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{
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print_string(" ... ");
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return;
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}
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F_QUOTATION *quot;
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switch(type_of(obj))
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{
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case FIXNUM_TYPE:
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print_fixnum(untag_fixnum_fast(obj));
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break;
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case WORD_TYPE:
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print_word(untag_word(obj),nesting - 1);
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break;
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case STRING_TYPE:
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print_factor_string(untag_string(obj));
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break;
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case F_TYPE:
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print_string("f");
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break;
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case TUPLE_TYPE:
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print_string("T{");
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print_tuple(untag_object(obj),nesting - 1);
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print_string(" }");
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break;
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case ARRAY_TYPE:
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print_string("{");
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print_array(untag_object(obj),nesting - 1);
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print_string(" }");
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break;
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case QUOTATION_TYPE:
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print_string("[");
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quot = untag_object(obj);
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print_array(untag_object(quot->array),nesting - 1);
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print_string(" ]");
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break;
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default:
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print_string("#<type "); print_cell(type_of(obj)); print_string(" @ "); print_cell_hex(obj); print_string(">");
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break;
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}
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}
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void print_obj(CELL obj)
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{
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print_nested_obj(obj,10);
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}
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void print_objects(CELL start, CELL end)
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{
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for(; start <= end; start += CELLS)
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{
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print_obj(get(start));
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nl();
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}
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}
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void print_datastack(void)
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{
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print_string("==== DATA STACK:\n");
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print_objects(ds_bot,ds);
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}
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void print_retainstack(void)
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{
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print_string("==== RETAIN STACK:\n");
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print_objects(rs_bot,rs);
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}
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void print_stack_frame(F_STACK_FRAME *frame)
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{
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print_obj(frame_executing(frame));
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print_string("\n");
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print_obj(frame_scan(frame));
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print_string("\n");
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print_cell_hex((CELL)frame_executing(frame));
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print_string(" ");
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print_cell_hex((CELL)frame->xt);
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print_string("\n");
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}
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void print_callstack(void)
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{
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print_string("==== CALL STACK:\n");
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CELL bottom = (CELL)stack_chain->callstack_bottom;
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CELL top = (CELL)stack_chain->callstack_top;
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iterate_callstack(top,bottom,print_stack_frame);
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}
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void dump_cell(CELL cell)
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{
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print_cell_hex_pad(cell); print_string(": ");
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cell = get(cell);
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print_cell_hex_pad(cell); print_string(" tag "); print_cell(TAG(cell));
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switch(TAG(cell))
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{
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case OBJECT_TYPE:
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case BIGNUM_TYPE:
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case FLOAT_TYPE:
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if(cell == F)
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print_string(" -- F");
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else if(cell < TYPE_COUNT<<TAG_BITS)
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{
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print_string(" -- possible header: ");
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print_cell(cell>>TAG_BITS);
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}
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else if(cell >= data_heap->segment->start
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&& cell < data_heap->segment->end)
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{
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CELL header = get(UNTAG(cell));
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CELL type = header>>TAG_BITS;
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print_string(" -- object; ");
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if(TAG(header) == 0 && type < TYPE_COUNT)
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{
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print_string(" type "); print_cell(type);
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}
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else
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print_string(" header corrupt");
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}
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break;
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}
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nl();
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}
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void dump_memory(CELL from, CELL to)
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{
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from = UNTAG(from);
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for(; from <= to; from += CELLS)
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dump_cell(from);
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}
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void dump_zone(F_ZONE *z)
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{
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print_string("Start="); print_cell(z->start);
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print_string(", size="); print_cell(z->size);
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print_string(", here="); print_cell(z->here - z->start); nl();
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}
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void dump_generations(void)
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{
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CELL i;
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print_string("Nursery: ");
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dump_zone(&nursery);
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for(i = 1; i < data_heap->gen_count; i++)
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{
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print_string("Generation "); print_cell(i); print_string(": ");
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dump_zone(&data_heap->generations[i]);
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}
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for(i = 0; i < data_heap->gen_count; i++)
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{
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print_string("Semispace "); print_cell(i); print_string(": ");
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dump_zone(&data_heap->semispaces[i]);
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}
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print_string("Cards: base=");
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print_cell((CELL)data_heap->cards);
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print_string(", size=");
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print_cell((CELL)(data_heap->cards_end - data_heap->cards));
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nl();
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}
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void dump_objects(F_FIXNUM type)
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{
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gc();
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begin_scan();
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CELL obj;
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while((obj = next_object()) != F)
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{
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if(type == -1 || type_of(obj) == type)
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{
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print_cell_hex_pad(obj);
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print_string(" ");
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print_nested_obj(obj,2);
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nl();
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}
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}
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/* end scan */
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gc_off = false;
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}
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CELL look_for;
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CELL obj;
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void find_data_references_step(CELL *scan)
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{
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if(look_for == *scan)
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{
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print_cell_hex_pad(obj);
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print_string(" ");
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print_nested_obj(obj,2);
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nl();
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}
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}
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void find_data_references(CELL look_for_)
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{
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look_for = look_for_;
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begin_scan();
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while((obj = next_object()) != F)
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do_slots(UNTAG(obj),find_data_references_step);
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/* end scan */
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gc_off = false;
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}
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/* Dump all code blocks for debugging */
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void dump_code_heap(void)
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{
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CELL size = 0;
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F_BLOCK *scan = first_block(&code_heap);
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while(scan)
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{
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char *status;
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switch(scan->status)
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{
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case B_FREE:
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status = "free";
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break;
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case B_ALLOCATED:
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size += object_size(block_to_compiled(scan)->relocation);
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status = "allocated";
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break;
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case B_MARKED:
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size += object_size(block_to_compiled(scan)->relocation);
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status = "marked";
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break;
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default:
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status = "invalid";
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break;
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}
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print_cell_hex((CELL)scan); print_string(" ");
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print_cell_hex(scan->size); print_string(" ");
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print_string(status); print_string("\n");
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scan = next_block(&code_heap,scan);
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}
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print_cell(size); print_string(" bytes of relocation data\n");
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}
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void factorbug(void)
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{
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if(fep_disabled)
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{
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print_string("Low level debugger disabled\n");
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exit(1);
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}
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/* open_console(); */
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print_string("Starting low level debugger...\n");
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print_string(" Basic commands:\n");
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print_string("q -- continue executing Factor - NOT SAFE\n");
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print_string("im -- save image to fep.image\n");
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print_string("x -- exit Factor\n");
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print_string(" Advanced commands:\n");
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print_string("d <addr> <count> -- dump memory\n");
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print_string("u <addr> -- dump object at tagged <addr>\n");
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print_string(". <addr> -- print object at tagged <addr>\n");
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print_string("t -- toggle output trimming\n");
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print_string("s r -- dump data, retain stacks\n");
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print_string(".s .r .c -- print data, retain, call stacks\n");
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print_string("e -- dump environment\n");
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print_string("g -- dump generations\n");
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print_string("card <addr> -- print card containing address\n");
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print_string("addr <card> -- print address containing card\n");
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print_string("data -- data heap dump\n");
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print_string("words -- words dump\n");
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print_string("tuples -- tuples dump\n");
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print_string("refs <addr> -- find data heap references to object\n");
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print_string("push <addr> -- push object on data stack - NOT SAFE\n");
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print_string("code -- code heap dump\n");
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bool seen_command = false;
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for(;;)
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{
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char cmd[1024];
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print_string("READY\n");
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fflush(stdout);
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if(scanf("%1000s",cmd) <= 0)
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{
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if(!seen_command)
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{
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/* If we exit with an EOF immediately, then
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dump stacks. This is useful for builder and
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other cases where Factor is run with stdin
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redirected to /dev/null */
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fep_disabled = true;
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print_datastack();
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print_retainstack();
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print_callstack();
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}
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exit(1);
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}
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seen_command = true;
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if(strcmp(cmd,"d") == 0)
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{
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CELL addr = read_cell_hex();
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scanf(" ");
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CELL count = read_cell_hex();
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dump_memory(addr,addr+count);
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}
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else if(strcmp(cmd,"u") == 0)
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{
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CELL addr = read_cell_hex();
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CELL count = object_size(addr);
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dump_memory(addr,addr+count);
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}
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else if(strcmp(cmd,".") == 0)
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{
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CELL addr = read_cell_hex();
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print_obj(addr);
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print_string("\n");
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}
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else if(strcmp(cmd,"t") == 0)
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full_output = !full_output;
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else if(strcmp(cmd,"s") == 0)
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dump_memory(ds_bot,ds);
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else if(strcmp(cmd,"r") == 0)
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dump_memory(rs_bot,rs);
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else if(strcmp(cmd,".s") == 0)
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print_datastack();
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else if(strcmp(cmd,".r") == 0)
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print_retainstack();
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else if(strcmp(cmd,".c") == 0)
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print_callstack();
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else if(strcmp(cmd,"e") == 0)
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{
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int i;
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for(i = 0; i < USER_ENV; i++)
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dump_cell((CELL)&userenv[i]);
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}
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else if(strcmp(cmd,"g") == 0)
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dump_generations();
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else if(strcmp(cmd,"card") == 0)
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{
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CELL addr = read_cell_hex();
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print_cell_hex((CELL)ADDR_TO_CARD(addr));
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nl();
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}
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else if(strcmp(cmd,"addr") == 0)
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{
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CELL card = read_cell_hex();
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print_cell_hex((CELL)CARD_TO_ADDR(card));
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nl();
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}
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else if(strcmp(cmd,"q") == 0)
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return;
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else if(strcmp(cmd,"x") == 0)
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exit(1);
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else if(strcmp(cmd,"im") == 0)
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save_image(STRING_LITERAL("fep.image"));
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else if(strcmp(cmd,"data") == 0)
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dump_objects(-1);
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else if(strcmp(cmd,"refs") == 0)
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{
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CELL addr = read_cell_hex();
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print_string("Data heap references:\n");
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find_data_references(addr);
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nl();
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}
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else if(strcmp(cmd,"words") == 0)
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dump_objects(WORD_TYPE);
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else if(strcmp(cmd,"tuples") == 0)
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dump_objects(TUPLE_TYPE);
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else if(strcmp(cmd,"push") == 0)
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{
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CELL addr = read_cell_hex();
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dpush(addr);
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}
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else if(strcmp(cmd,"code") == 0)
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dump_code_heap();
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else
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print_string("unknown command\n");
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}
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}
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void primitive_die(void)
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{
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print_string("The die word was called by the library. Unless you called it yourself,\n");
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print_string("you have triggered a bug in Factor. Please report.\n");
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factorbug();
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}
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