factor/vm/jit.hpp

61 lines
1.4 KiB
C++

namespace factor {
struct jit {
data_root<object> owner;
growable_byte_array code;
growable_byte_array relocation;
growable_array parameters;
growable_array literals;
bool computing_offset_p;
fixnum position;
cell offset;
factor_vm* parent;
jit(cell owner, factor_vm* parent);
~jit();
void compute_position(cell offset);
void emit_relocation(cell relocation_template);
void emit(cell code_template);
// Allocates memory
void parameter(cell parameter) { parameters.add(parameter); }
// Allocates memory
void emit_with_parameter(cell code_template_, cell parameter_);
// Allocates memory
void literal(cell literal) { literals.add(literal); }
// Allocates memory
void emit_with_literal(cell code_template_, cell literal_);
// Allocates memory
void push(cell literal) {
emit_with_literal(parent->special_objects[JIT_PUSH_LITERAL], literal);
}
bool emit_subprimitive(cell word_, bool tail_call_p, bool stack_frame_p);
fixnum get_position() {
if (computing_offset_p) {
// If this is still on, emit() didn't clear it,
// so the offset was out of bounds
return -1;
}
return position;
}
void set_position(fixnum position_) {
if (computing_offset_p)
position = position_;
}
code_block* to_code_block(code_block_type type, cell frame_size);
private:
jit(const jit&);
void operator=(const jit&);
};
}