export.h

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#pragma once
 
#include <optional>
#include <span>
#include <string_view>
#include <unordered_map>
 
#include <rex/platform.h>
#include <rex/ppc/recompiled_code.h>
#include <rex/types.h>
 
namespace rex::kernel {
 
enum class ExportModule : u8 {
  kXboxkrnl,
  kXAM,
  kXBDM,
};
 
enum class ExportType : u8 {
  kFunction, 
  kVariable, 
};
 
struct ExportEntry {
  u16 ordinal; 
  ExportType type;
  std::string_view name;
  ::PPCFunc* fn; 
};
 
class ExportVariableTable {
 public:
  void SetAddress(u16 ordinal, u32 address) { addresses_[ordinal] = address; }

  u32 GetAddress(u16 ordinal) const {
    const auto it = addresses_.find(ordinal);
    return it == addresses_.end() ? 0 : it->second;
  }
 
 private:
  std::unordered_map<u16, u32> addresses_;
};

REX_KERNEL_API std::span<const ExportEntry> GetExports(ExportModule module);

REX_KERNEL_API const ExportEntry* FindByOrdinal(ExportModule module, u16 ordinal);

REX_KERNEL_API bool IsNoReturnExport(ExportModule module, u16 ordinal);

REX_KERNEL_API std::optional<ExportModule> ModuleFromName(std::string_view name);
 
}  // namespace rex::kernel