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partition_data_manager: Make data arrays constexpr

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Previously the constructor for all of these would run at program
startup, consuming time before the application can enter main().

This is also particularly dangerous, given the logging system wouldn't
have been initialized properly yet, yet the program would use the logs
to signify an error.

To rectify this, we can replace the literals with constexpr functions
that perform the conversion at compile-time, completely eliminating the
runtime cost of initializing these arrays.
This commit is contained in:
Lioncash 2020-08-03 13:18:43 -04:00
parent 9b75481755
commit 7f0f37fca7
4 changed files with 133 additions and 130 deletions
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10
src/core/crypto/key_manager.cpp
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@ -40,12 +40,14 @@ namespace Core::Crypto {
constexpr u64 CURRENT_CRYPTO_REVISION = 0x5;
constexpr u64 FULL_TICKET_SIZE = 0x400;
using namespace Common;
using Common::AsArray;
const std::array<SHA256Hash, 2> eticket_source_hashes{
"B71DB271DC338DF380AA2C4335EF8873B1AFD408E80B3582D8719FC81C5E511C"_array32, // eticket_rsa_kek_source
"E8965A187D30E57869F562D04383C996DE487BBA5761363D2D4D32391866A85C"_array32, // eticket_rsa_kekek_source
// clang-format off
constexpr std::array eticket_source_hashes{
AsArray("B71DB271DC338DF380AA2C4335EF8873B1AFD408E80B3582D8719FC81C5E511C"), // eticket_rsa_kek_source
AsArray("E8965A187D30E57869F562D04383C996DE487BBA5761363D2D4D32391866A85C"), // eticket_rsa_kekek_source
};
// clang-format on
const std::map<std::pair<S128KeyType, u64>, std::string> KEYS_VARIABLE_LENGTH{
{{S128KeyType::Master, 0}, "master_key_"},