69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
/** Generates C code from SimpleDwarf */
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#pragma once
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#include <ostream>
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#include <functional>
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#include <memory>
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#include "SimpleDwarf.hpp"
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#include "PcListReader.hpp"
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#include "SwitchStatement.hpp"
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class CodeGenerator {
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public:
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/// A function deriving a generated function name from a FDE
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typedef std::function<std::string(const SimpleDwarf::Fde&)>
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NamingScheme;
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/// Unimplemented case
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class NotImplementedCase: public std::exception {};
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class InvalidPcList: public std::exception {};
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/** Create a CodeGenerator to generate code for the given dwarf, on the
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* given std::ostream object (eg. cout). */
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CodeGenerator(const SimpleDwarf& dwarf, std::ostream& os,
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NamingScheme naming_scheme,
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AbstractSwitchCompiler* sw_compiler);
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/// Actually generate the code on the given stream
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void generate();
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private: //meth
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struct LookupEntry {
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std::string name;
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uintptr_t beg, end;
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};
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SwitchStatement gen_fresh_switch() const;
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void switch_append_fde(
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SwitchStatement& sw,
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const SimpleDwarf::Fde& fde) const;
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void gen_of_dwarf();
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void gen_unwind_func_header(const std::string& name);
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void gen_unwind_func_footer();
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void gen_function_of_fde(const SimpleDwarf::Fde& fde);
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void gen_of_row_content(
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const SimpleDwarf::DwRow& row,
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std::ostream& stream) const;
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void gen_of_reg(
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const SimpleDwarf::DwRegister& reg,
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std::ostream& stream) const;
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void gen_lookup(const std::vector<LookupEntry>& entries);
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bool check_reg_defined(const SimpleDwarf::DwRegister& reg) const;
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bool check_reg_valid(const SimpleDwarf::DwRegister& reg) const;
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private:
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SimpleDwarf dwarf;
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std::ostream& os;
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std::unique_ptr<PcListReader> pc_list;
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NamingScheme naming_scheme;
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std::unique_ptr<AbstractSwitchCompiler> switch_compiler;
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};
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