reporter: Add log output for packaged lm log data

Takes the vector from head to tail of log data and saves it.

src/core/reporter.cpp

@@ -7,6 +7,8 @@
 
 #include <fmt/chrono.h>
 #include <fmt/format.h>
+#include <fmt/ostream.h>
+#include <fmt/time.h>
 #include <json.hpp>
 
 #include "common/file_util.h"
@@ -17,6 +19,7 @@
 #include "core/hle/kernel/hle_ipc.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/result.h"
+#include "core/hle/service/lm/manager.h"
 #include "core/reporter.h"
 #include "core/settings.h"
 
@@ -354,6 +357,55 @@ void Reporter::SaveErrorReport(u64 title_id, ResultCode result,
     SaveToFile(std::move(out), GetPath("error_report", title_id, timestamp));
 }
 
+void Reporter::SaveLogReport(u32 destination, std::vector<Service::LM::LogMessage> messages) const {
+    if (!IsReportingEnabled()) {
+        return;
+    }
+
+    const auto timestamp = GetTimestamp();
+    json out;
+
+    out["yuzu_version"] = GetYuzuVersionData();
+    out["report_common"] =
+        GetReportCommonData(system.CurrentProcess()->GetTitleID(), RESULT_SUCCESS, timestamp);
+
+    out["log_destination"] =
+        fmt::format("{}", static_cast<Service::LM::DestinationFlag>(destination));
+
+    auto json_messages = json::array();
+    std::transform(messages.begin(), messages.end(), std::back_inserter(json_messages),
+                   [](const Service::LM::LogMessage& message) {
+                       json out;
+                       out["is_head"] = fmt::format("{}", message.header.IsHeadLog());
+                       out["is_tail"] = fmt::format("{}", message.header.IsTailLog());
+                       out["pid"] = fmt::format("{:016X}", message.header.pid);
+                       out["thread_context"] =
+                           fmt::format("{:016X}", message.header.thread_context);
+                       out["payload_size"] = fmt::format("{:016X}", message.header.payload_size);
+                       out["flags"] = fmt::format("{:04X}", message.header.flags.Value());
+                       out["severity"] = fmt::format("{}", message.header.severity.Value());
+                       out["verbosity"] = fmt::format("{:02X}", message.header.verbosity);
+
+                       auto fields = json::array();
+                       std::transform(message.fields.begin(), message.fields.end(),
+                                      std::back_inserter(fields), [](const auto& kv) {
+                                          json out;
+                                          out["type"] = fmt::format("{}", kv.first);
+                                          out["data"] =
+                                              Service::LM::FormatField(kv.first, kv.second);
+                                          return std::move(out);
+                                      });
+
+                       out["fields"] = std::move(fields);
+                       return std::move(out);
+                   });
+
+    out["log_messages"] = std::move(json_messages);
+
+    SaveToFile(std::move(out),
+               GetPath("log_report", system.CurrentProcess()->GetTitleID(), timestamp));
+}
+
 void Reporter::SaveFilesystemAccessReport(Service::FileSystem::LogMode log_mode,
                                           std::string log_message) const {
     if (!IsReportingEnabled())

src/core/reporter.h

@@ -20,6 +20,10 @@ namespace Service::FileSystem {
 enum class LogMode : u32;
 }
 
+namespace Service::LM {
+struct LogMessage;
+} // namespace Service::LM
+
 namespace Core {
 
 class System;
@@ -29,18 +33,22 @@ public:
     explicit Reporter(System& system);
     ~Reporter();
 
+    // Used by fatal services
     void SaveCrashReport(u64 title_id, ResultCode result, u64 set_flags, u64 entry_point, u64 sp,
                          u64 pc, u64 pstate, u64 afsr0, u64 afsr1, u64 esr, u64 far,
                          const std::array<u64, 31>& registers, const std::array<u64, 32>& backtrace,
                          u32 backtrace_size, const std::string& arch, u32 unk10) const;
 
+    // Used by syscall svcBreak
     void SaveSvcBreakReport(u32 type, bool signal_debugger, u64 info1, u64 info2,
                             std::optional<std::vector<u8>> resolved_buffer = {}) const;
 
+    // Used by HLE service handler
     void SaveUnimplementedFunctionReport(Kernel::HLERequestContext& ctx, u32 command_id,
                                          const std::string& name,
                                          const std::string& service_name) const;
 
+    // Used by stub applet implementation
     void SaveUnimplementedAppletReport(u32 applet_id, u32 common_args_version, u32 library_version,
                                        u32 theme_color, bool startup_sound, u64 system_tick,
                                        std::vector<std::vector<u8>> normal_channel,
@@ -51,10 +59,14 @@ public:
         New,
         System,
     };
+    // Used by prepo services
+    void SavePlayReport(u64 title_id, u64 process_id, std::vector<std::vector<u8>> data,
+                        std::optional<u128> user_id = {}) const;
 
     void SavePlayReport(PlayReportType type, u64 title_id, std::vector<std::vector<u8>> data,
                         std::optional<u64> process_id = {}, std::optional<u128> user_id = {}) const;
 
+    // Used by error applet
     void SaveErrorReport(u64 title_id, ResultCode result,
                          std::optional<std::string> custom_text_main = {},
                          std::optional<std::string> custom_text_detail = {}) const;
@@ -62,6 +74,11 @@ public:
     void SaveFilesystemAccessReport(Service::FileSystem::LogMode log_mode,
                                     std::string log_message) const;
 
+    // Used by lm services
+    void SaveLogReport(u32 destination, std::vector<Service::LM::LogMessage> messages) const;
+
+    // Can be used anywhere to generate a backtrace and general info report at any point during
+    // execution. Not intended to be used for anything other than debugging or testing.
     void SaveUserReport() const;
 
 private: