diff --git a/src/xenia/cpu/backend/x64/x64_emitter.cc b/src/xenia/cpu/backend/x64/x64_emitter.cc
index 5da8f6adc..25181b36d 100644
--- a/src/xenia/cpu/backend/x64/x64_emitter.cc
+++ b/src/xenia/cpu/backend/x64/x64_emitter.cc
@@ -438,6 +438,19 @@ uint64_t TrapDebugBreak(void* raw_context, uint64_t address) {
   return 0;
 }
 
+// AUDIT-030: log LR + r3..r6 when `log_lr_on_pc` PC is reached.
+uint64_t TrapLogLR(void* raw_context, uint64_t address) {
+  auto* ctx = reinterpret_cast<ppc::PPCContext_s*>(raw_context);
+  XELOGI(
+      "TRACE-PC-LR pc={:08X} lr={:08X} r3={:08X} r4={:08X} r5={:08X} "
+      "r6={:08X} r31={:08X}",
+      static_cast<uint32_t>(cvars::log_lr_on_pc),
+      static_cast<uint32_t>(ctx->lr), static_cast<uint32_t>(ctx->r[3]),
+      static_cast<uint32_t>(ctx->r[4]), static_cast<uint32_t>(ctx->r[5]),
+      static_cast<uint32_t>(ctx->r[6]), static_cast<uint32_t>(ctx->r[31]));
+  return 0;
+}
+
 void X64Emitter::Trap(uint16_t trap_type) {
   switch (trap_type) {
     case 20:
@@ -454,6 +467,10 @@ void X64Emitter::Trap(uint16_t trap_type) {
     case 25:
       // ?
       break;
+    case 100:
+      // AUDIT-030: log LR + r3..r6 (set via --log_lr_on_pc).
+      CallNative(TrapLogLR, 0);
+      break;
     default:
       XELOGW("Unknown trap type {}", trap_type);
       db(0xCC);
diff --git a/src/xenia/cpu/cpu_flags.cc b/src/xenia/cpu/cpu_flags.cc
index 3ff067e15..d1f02f516 100644
--- a/src/xenia/cpu/cpu_flags.cc
+++ b/src/xenia/cpu/cpu_flags.cc
@@ -57,3 +57,8 @@ DEFINE_bool(break_condition_truncate, true, "truncate value to 32-bits", "CPU");
 
 DEFINE_bool(break_on_debugbreak, true, "int3 on JITed __debugbreak requests.",
             "CPU");
+
+// AUDIT-030: log LR + r3..r6 each time the given guest PC executes.
+DEFINE_uint64(log_lr_on_pc, 0,
+              "Log LR + r3..r6 each time the given guest PC is executed.",
+              "CPU");
diff --git a/src/xenia/cpu/cpu_flags.h b/src/xenia/cpu/cpu_flags.h
index 38c4f98ba..ad3d78581 100644
--- a/src/xenia/cpu/cpu_flags.h
+++ b/src/xenia/cpu/cpu_flags.h
@@ -35,4 +35,6 @@ DECLARE_bool(break_condition_truncate);
 
 DECLARE_bool(break_on_debugbreak);
 
+DECLARE_uint64(log_lr_on_pc);
+
 #endif  // XENIA_CPU_CPU_FLAGS_H_
diff --git a/src/xenia/cpu/ppc/ppc_hir_builder.cc b/src/xenia/cpu/ppc/ppc_hir_builder.cc
index 42d996cba..5db977ae7 100644
--- a/src/xenia/cpu/ppc/ppc_hir_builder.cc
+++ b/src/xenia/cpu/ppc/ppc_hir_builder.cc
@@ -174,6 +174,12 @@ bool PPCHIRBuilder::Emit(GuestFunction* function, uint32_t flags) {
 
     MaybeBreakOnInstruction(address);
 
+    // AUDIT-030: log LR + r3..r6 each time `log_lr_on_pc` is reached.
+    if (cvars::log_lr_on_pc != 0 && address == cvars::log_lr_on_pc) {
+      Comment("--log-lr-on-pc target");
+      Trap(100);
+    }
+
     InstrData i;
     i.address = address;
     i.code = code;