73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
namespace factor
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{
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struct jit {
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code_block_type type;
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data_root<object> owner;
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growable_byte_array code;
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growable_byte_array relocation;
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growable_array parameters;
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growable_array literals;
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bool computing_offset_p;
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fixnum position;
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cell offset;
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factor_vm *parent;
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explicit jit(code_block_type type, cell owner, factor_vm *parent);
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void compute_position(cell offset);
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void emit_relocation(cell code_template);
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void emit(cell code_template);
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void parameter(cell parameter) { parameters.add(parameter); }
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void emit_with_parameter(cell code_template_, cell parameter_);
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void literal(cell literal) { literals.add(literal); }
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void emit_with_literal(cell code_template_, cell literal_);
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void push(cell literal)
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{
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emit_with_literal(parent->special_objects[JIT_PUSH_IMMEDIATE],literal);
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}
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void word_jump(cell word_)
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{
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data_root<word> word(word_,parent);
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#ifndef FACTOR_AMD64
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literal(tag_fixnum(xt_tail_pic_offset));
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#endif
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literal(word.value());
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emit(parent->special_objects[JIT_WORD_JUMP]);
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}
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void word_call(cell word)
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{
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emit_with_literal(parent->special_objects[JIT_WORD_CALL],word);
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}
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bool emit_subprimitive(cell word_, bool tail_call_p, bool stack_frame_p);
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fixnum get_position()
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{
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if(computing_offset_p)
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{
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/* If this is still on, emit() didn't clear it,
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so the offset was out of bounds */
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return -1;
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}
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else
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return position;
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}
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void set_position(fixnum position_)
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{
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if(computing_offset_p)
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position = position_;
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}
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code_block *to_code_block();
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};
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}
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