result: Make error description a generic integer

It is now known that result code description vary depending on the
module, and so they're best defined on a per-module basis. To support
this, allow passing in an arbitrary integer instead of limiting to the
ones in the ErrorDescription enum. These will be gradually migrated to
their individual users, but a few will be kept as "common" codes shared
by all modules.

src/core/hle/result.h

@@ -13,9 +13,14 @@
 
 // All the constants in this file come from http://3dbrew.org/wiki/Error_codes
 
-/// Detailed description of the error. This listing is likely incomplete.
+/**
+ * Detailed description of the error. Code 0 always means success. Codes 1000 and above are
+ * considered "well-known" and have common values between all modules. The meaning of other codes
+ * vary by module.
+ */
 enum class ErrorDescription : u32 {
     Success = 0,
+
     SessionClosedByRemote = 26,
     WrongPermission = 46,
     OS_InvalidBufferDescriptor = 48,
@@ -45,6 +50,8 @@ enum class ErrorDescription : u32 {
     FS_UnsupportedOpenFlags = 760,
     FS_IncorrectExeFSReadSize = 761,
     FS_UnexpectedFileOrDirectory = 770,
+
+    // Codes 1000 and above are considered "well-known" and have common values between all modules.
     InvalidSection = 1000,
     TooLarge = 1001,
     NotAuthorized = 1002,
@@ -218,7 +225,7 @@ enum class ErrorLevel : u32 {
 union ResultCode {
     u32 raw;
 
-    BitField<0, 10, ErrorDescription> description;
+    BitField<0, 10, u32> description;
     BitField<10, 8, ErrorModule> module;
 
     BitField<21, 6, ErrorSummary> summary;
@@ -230,7 +237,11 @@ union ResultCode {
 
     constexpr explicit ResultCode(u32 raw) : raw(raw) {}
 
-    constexpr ResultCode(ErrorDescription description_, ErrorModule module_, ErrorSummary summary_,
+    constexpr ResultCode(ErrorDescription description, ErrorModule module, ErrorSummary summary,
+                         ErrorLevel level)
+        : ResultCode(static_cast<u32>(description), module, summary, level) {}
+
+    constexpr ResultCode(u32 description_, ErrorModule module_, ErrorSummary summary_,
                          ErrorLevel level_)
         : raw(description.FormatValue(description_) | module.FormatValue(module_) |
               summary.FormatValue(summary_) | level.FormatValue(level_)) {}

src/core/hle/service/cfg/cfg.cpp

@@ -411,7 +411,8 @@ ResultCode UpdateConfigNANDSavegame() {
 ResultCode FormatConfig() {
     ResultCode res = DeleteConfigNANDSaveFile();
     // The delete command fails if the file doesn't exist, so we have to check that too
-    if (!res.IsSuccess() && res.description != ErrorDescription::FS_FileNotFound) {
+    if (!res.IsSuccess() &&
+        res.description != static_cast<u32>(ErrorDescription::FS_FileNotFound)) {
         return res;
     }
     // Delete the old data
@@ -534,7 +535,7 @@ ResultCode LoadConfigNANDSaveFile() {
         Service::FS::OpenArchive(Service::FS::ArchiveIdCode::SystemSaveData, archive_path);
 
     // If the archive didn't exist, create the files inside
-    if (archive_result.Code().description == ErrorDescription::FS_NotFormatted) {
+    if (archive_result.Code().description == static_cast<u32>(ErrorDescription::FS_NotFormatted)) {
         // Format the archive to create the directories
         Service::FS::FormatArchive(Service::FS::ArchiveIdCode::SystemSaveData,
                                    FileSys::ArchiveFormatInfo(), archive_path);

src/core/hle/service/ptm/ptm.cpp

@@ -134,7 +134,7 @@ void Init() {
     auto archive_result =
         Service::FS::OpenArchive(Service::FS::ArchiveIdCode::SharedExtSaveData, archive_path);
     // If the archive didn't exist, create the files inside
-    if (archive_result.Code().description == ErrorDescription::FS_NotFormatted) {
+    if (archive_result.Code().description == static_cast<u32>(ErrorDescription::FS_NotFormatted)) {
         // Format the archive to create the directories
         Service::FS::FormatArchive(Service::FS::ArchiveIdCode::SharedExtSaveData,
                                    FileSys::ArchiveFormatInfo(), archive_path);