65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
namespace factor
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{
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struct jit {
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cell type;
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gc_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 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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jit(cell jit_type, cell owner);
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void compute_position(cell offset);
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relocation_entry rel_to_emit(cell code_template, bool *rel_p);
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void emit(cell code_template);
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void literal(cell literal) { literals.add(literal); }
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void emit_with(cell code_template_, cell literal_);
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void push(cell literal) {
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emit_with(userenv[JIT_PUSH_IMMEDIATE],literal);
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}
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void word_jump(cell word) {
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emit_with(userenv[JIT_WORD_JUMP],word);
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}
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void word_call(cell word) {
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emit_with(userenv[JIT_WORD_CALL],word);
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}
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void emit_subprimitive(cell word_) {
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gc_root<word> word(word_);
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gc_root<array> code_template(word->subprimitive);
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if(array_nth(code_template.untagged(),1) != F) literal(T);
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emit(code_template.value());
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}
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void emit_class_lookup(fixnum index, cell type);
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fixnum get_position() {
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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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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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