1 files changed, 66 insertions, 0 deletions

diff --git a/src/citra_qt/debugger/callstack.cpp b/src/citra_qt/debugger/callstack.cpp
new file mode 100644
index 000000000..f59f2d8c8
--- /dev/null
+++ b/src/citra_qt/debugger/callstack.cpp
@@ -0,0 +1,66 @@
+#include <QStandardItemModel>
+
+#include "callstack.hxx"
+
+#include "core/core.h"
+#include "core/arm/arm_interface.h"
+#include "core/mem_map.h"
+#include "common/symbols.h"
+#include "core/arm/disassembler/arm_disasm.h"
+
+CallstackWidget::CallstackWidget(QWidget* parent): QDockWidget(parent)
+{
+    ui.setupUi(this);
+
+    callstack_model = new QStandardItemModel(this);
+    callstack_model->setColumnCount(4);
+    callstack_model->setHeaderData(0, Qt::Horizontal, "Stack pointer");
+    callstack_model->setHeaderData(2, Qt::Horizontal, "Return address");
+    callstack_model->setHeaderData(1, Qt::Horizontal, "Call address");
+    callstack_model->setHeaderData(3, Qt::Horizontal, "Function");
+    ui.treeView->setModel(callstack_model);
+}
+
+void CallstackWidget::OnCPUStepped()
+{
+    ARM_Disasm* disasm = new ARM_Disasm();
+    ARM_Interface* app_core = Core::g_app_core;
+
+    u32 sp = app_core->GetReg(13); //stack pointer
+    u32 addr, ret_addr, call_addr, func_addr;
+    
+    int counter = 0;
+    for (int addr = 0x10000000; addr >= sp; addr -= 4)
+    {
+        ret_addr = Memory::Read32(addr);
+        call_addr = ret_addr - 4; //get call address???
+
+        /* TODO (mattvail) clean me, move to debugger interface */
+        u32 insn = Memory::Read32(call_addr);
+        if (disasm->decode(insn) == OP_BL)
+        {
+            std::string name;
+            // ripped from disasm
+            uint8_t cond = (insn >> 28) & 0xf;
+            uint32_t i_offset = insn & 0xffffff;
+            // Sign-extend the 24-bit offset
+            if ((i_offset >> 23) & 1)
+                i_offset |= 0xff000000;
+
+            // Pre-compute the left-shift and the prefetch offset
+            i_offset <<= 2;
+            i_offset += 8;
+            func_addr = call_addr + i_offset;
+
+            callstack_model->setItem(counter, 0, new QStandardItem(QString("0x%1").arg(addr, 8, 16, QLatin1Char('0'))));
+            callstack_model->setItem(counter, 1, new QStandardItem(QString("0x%1").arg(ret_addr, 8, 16, QLatin1Char('0'))));
+            callstack_model->setItem(counter, 2, new QStandardItem(QString("0x%1").arg(call_addr, 8, 16, QLatin1Char('0'))));
+            
+            name = Symbols::HasSymbol(func_addr) ? Symbols::GetSymbol(func_addr).name : "unknown";
+            callstack_model->setItem(counter, 3, new QStandardItem(QString("%1_%2").arg(QString::fromStdString(name))
+                .arg(QString("0x%1").arg(func_addr, 8, 16, QLatin1Char('0')))));
+
+            counter++;
+        }
+    }
+}
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