461 lines
9.9 KiB
C++
Executable File
461 lines
9.9 KiB
C++
Executable File
#include "master.hpp"
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namespace factor
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{
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void factor_vm::print_chars(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 factor_vm::print_word(word* word, cell nesting)
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{
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if(tagged<object>(word->vocabulary).type_p(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(tagged<object>(word->name).type_p(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 factor_vm::print_factor_string(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 factor_vm::print_array(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 factor_vm::print_tuple(tuple *tuple, cell nesting)
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{
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tuple_layout *layout = untag<tuple_layout>(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->klass,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->data()[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 factor_vm::print_nested_obj(cell obj, 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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quotation *quot;
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switch(tagged<object>(obj).type())
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{
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case FIXNUM_TYPE:
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print_fixnum(untag_fixnum(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<tuple>(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<array>(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<quotation>(obj);
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print_array(untag<array>(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 ");
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print_cell(tagged<object>(obj).type());
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print_string(" @ ");
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print_cell_hex(obj);
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print_string(">");
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break;
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}
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}
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void factor_vm::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 factor_vm::print_objects(cell *start, cell *end)
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{
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for(; start <= end; start++)
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{
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print_obj(*start);
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nl();
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}
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}
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void factor_vm::print_datastack()
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{
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print_string("==== DATA STACK:\n");
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print_objects((cell *)ds_bot,(cell *)ds);
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}
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void factor_vm::print_retainstack()
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{
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print_string("==== RETAIN STACK:\n");
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print_objects((cell *)rs_bot,(cell *)rs);
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}
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struct stack_frame_printer {
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factor_vm *parent;
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explicit stack_frame_printer(factor_vm *parent_) : parent(parent_) {}
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void operator()(stack_frame *frame)
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{
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parent->print_obj(parent->frame_executing(frame));
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print_string("\n");
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parent->print_obj(parent->frame_scan(frame));
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print_string("\n");
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print_string("word/quot addr: ");
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print_cell_hex((cell)parent->frame_executing(frame));
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print_string("\n");
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print_string("word/quot xt: ");
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print_cell_hex((cell)frame->xt);
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print_string("\n");
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print_string("return address: ");
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print_cell_hex((cell)FRAME_RETURN_ADDRESS(frame,parent));
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print_string("\n");
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}
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};
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void factor_vm::print_callstack()
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{
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print_string("==== CALL STACK:\n");
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stack_frame_printer printer(this);
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iterate_callstack(ctx,printer);
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}
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void factor_vm::dump_cell(cell x)
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{
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print_cell_hex_pad(x); print_string(": ");
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x = *(cell *)x;
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print_cell_hex_pad(x); print_string(" tag "); print_cell(TAG(x));
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nl();
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}
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void factor_vm::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 += sizeof(cell))
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dump_cell(from);
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}
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void factor_vm::dump_zone(const char *name, zone *z)
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{
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print_string(name); print_string(": ");
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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 factor_vm::dump_generations()
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{
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dump_zone("Nursery",&nursery);
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dump_zone("Aging",data->aging);
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dump_zone("Tenured",data->tenured);
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print_string("Cards: base=");
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print_cell((cell)data->cards);
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print_string(", size=");
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print_cell((cell)(data->cards_end - data->cards));
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nl();
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}
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void factor_vm::dump_objects(cell type)
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{
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primitive_full_gc();
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begin_scan();
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cell obj;
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while(to_boolean(obj = next_object()))
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{
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if(type == TYPE_COUNT || tagged<object>(obj).type_p(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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}
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struct data_references_finder {
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cell look_for, obj;
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factor_vm *parent;
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explicit data_references_finder(cell look_for_, cell obj_, factor_vm *parent_)
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: look_for(look_for_), obj(obj_), parent(parent_) { }
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void operator()(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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parent->print_nested_obj(obj,2);
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nl();
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}
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}
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};
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void factor_vm::find_data_references(cell look_for)
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{
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begin_scan();
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cell obj;
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while(to_boolean(obj = next_object()))
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{
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data_references_finder finder(look_for,obj,this);
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do_slots(UNTAG(obj),finder);
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}
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end_scan();
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}
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/* Dump all code blocks for debugging */
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void factor_vm::dump_code_heap()
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{
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cell reloc_size = 0, literal_size = 0;
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heap_block *scan = code->first_block();
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while(scan)
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{
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const char *status;
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if(scan->type() == FREE_BLOCK_TYPE)
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status = "free";
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else if(code->state->is_marked_p(scan))
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{
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reloc_size += object_size(((code_block *)scan)->relocation);
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literal_size += object_size(((code_block *)scan)->literals);
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status = "marked";
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}
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else
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{
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reloc_size += object_size(((code_block *)scan)->relocation);
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literal_size += object_size(((code_block *)scan)->literals);
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status = "allocated";
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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 = code->next_block(scan);
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}
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print_cell(reloc_size); print_string(" bytes of relocation data\n");
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print_cell(literal_size); print_string(" bytes of literal data\n");
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}
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void factor_vm::factorbug()
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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("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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if(scanf(" ") < 0) break;
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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,"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(TYPE_COUNT);
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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 factor_vm::primitive_die()
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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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}
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