kernel: optional SVC trace (EDEN_NX2_SVC_TRACE=1)

1 files changed, 11 insertions, 0 deletions

diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 3542d5a3b6..d2e45fabb6 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -6,6 +6,7 @@
 // This file is automatically generated using svc_generator.py.
 // DO NOT MODIFY IT MANUALLY
 
+#include <cstdlib>
 #include <type_traits>
 
 #include "core/arm/arm_interface.h"
@@ -2505,11 +2506,21 @@ void Call(Core::System& system, u32 imm) {
     LOG_TRACE(Kernel_SVC, "{} [0]={:#x} [1]={:#x} [2]={:#x} [3]={:#x} [4]={:#x} [5]={:#x} [6]={:#x}",
         imm, GetArg64(args, 0), GetArg64(args, 1), GetArg64(args, 2),
         GetArg64(args, 3), GetArg64(args, 4), GetArg64(args, 5), GetArg64(args, 6));
+    // Set EDEN_NX2_SVC_TRACE=1 to log every SVC with its arguments and results.
+    static const bool svc_trace = std::getenv("EDEN_NX2_SVC_TRACE") != nullptr;
+    if (svc_trace) {
+        LOG_INFO(Kernel_SVC, "svc {:#04x} in  [0]={:#x} [1]={:#x} [2]={:#x} [3]={:#x}", imm,
+                 GetArg64(args, 0), GetArg64(args, 1), GetArg64(args, 2), GetArg64(args, 3));
+    }
     if (process.Is64Bit()) {
         Call64(system, imm, args);
     } else {
         Call32(system, imm, args);
     }
+    if (svc_trace) {
+        LOG_INFO(Kernel_SVC, "svc {:#04x} out [0]={:#x} [1]={:#x} [2]={:#x}", imm,
+                 GetArg64(args, 0), GetArg64(args, 1), GetArg64(args, 2));
+    }
     //kernel.ExitSVCProfile();
     kernel.CurrentPhysicalCore().LoadSvcArguments(process, args);
 }