Moved backtrace to ArmInterface

Added to both dynarmic and unicorn

src/core/arm/arm_interface.h

@@ -141,6 +141,8 @@ public:
 
     /// Prepare core for thread reschedule (if needed to correctly handle state)
     virtual void PrepareReschedule() = 0;
+
+    virtual void LogBacktrace() = 0;
 };
 
 } // namespace Core

src/core/arm/dynarmic/arm_dynarmic.cpp

@@ -278,6 +278,22 @@ void ARM_Dynarmic::PageTableChanged() {
     current_page_table = Memory::GetCurrentPageTable();
 }
 
+void ARM_Dynarmic::LogBacktrace() {
+    VAddr fp = GetReg(29);
+    VAddr lr = GetReg(30);
+    VAddr sp = GetReg(13);
+    VAddr pc = GetPC();
+    LOG_ERROR(Core_ARM, "Backtrace, sp={:016X}, pc={:016X}", sp, pc);
+    for (;;) {
+        LOG_ERROR(Core_ARM, "{:016X}", lr);
+        if (!fp) {
+            break;
+        }
+        lr = Memory::Read64(fp + 8) - 4;
+        fp = Memory::Read64(fp);
+    }
+}
+
 DynarmicExclusiveMonitor::DynarmicExclusiveMonitor(std::size_t core_count) : monitor(core_count) {}
 DynarmicExclusiveMonitor::~DynarmicExclusiveMonitor() = default;
 

src/core/arm/dynarmic/arm_dynarmic.h

@@ -53,6 +53,8 @@ public:
     void ClearInstructionCache() override;
     void PageTableChanged() override;
 
+    void LogBacktrace() override;
+
 private:
     std::unique_ptr<Dynarmic::A64::Jit> MakeJit() const;
 

src/core/arm/unicorn/arm_unicorn.cpp

@@ -10,6 +10,7 @@
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/hle/kernel/svc.h"
+#include "core/memory.h"
 
 namespace Core {
 
@@ -266,6 +267,22 @@ void ARM_Unicorn::ClearExclusiveState() {}
 
 void ARM_Unicorn::ClearInstructionCache() {}
 
+void ARM_Unicorn::LogBacktrace() {
+    VAddr fp = GetReg(29);
+    VAddr lr = GetReg(30);
+    VAddr sp = GetReg(13);
+    VAddr pc = GetPC();
+    LOG_ERROR(Core_ARM, "Backtrace, sp={:016X}, pc={:016X}", sp, pc);
+    for (;;) {
+        LOG_ERROR(Core_ARM, "{:016X}", lr);
+        if (!fp) {
+            break;
+        }
+        lr = Memory::Read64(fp + 8) - 4;
+        fp = Memory::Read64(fp);
+    }
+}
+
 void ARM_Unicorn::RecordBreak(GDBStub::BreakpointAddress bkpt) {
     last_bkpt = bkpt;
     last_bkpt_hit = true;

src/core/arm/unicorn/arm_unicorn.h

@@ -40,6 +40,7 @@ public:
     void ClearInstructionCache() override;
     void PageTableChanged() override{};
     void RecordBreak(GDBStub::BreakpointAddress bkpt);
+    void LogBacktrace() override;
 
 private:
     uc_engine* uc{};