[Lldb-commits] [lldb] [lldb] Support DW_OP_WASM_location in DWARFExpression (PR #151010)

[David Spickett via lldb-commits]

================
@@ -18,27 +21,114 @@
 #include "lldb/Core/dwarf.h"
 #include "lldb/Host/HostInfo.h"
 #include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Target/RegisterContext.h"
+#include "lldb/Utility/RegisterValue.h"
 #include "lldb/Utility/StreamString.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Testing/Support/Error.h"
 #include "gtest/gtest.h"
 
-using namespace lldb_private;
 using namespace lldb_private::plugin::dwarf;
+using namespace lldb_private::wasm;
+using namespace lldb_private;
 using namespace llvm::dwarf;
 
+namespace {
+struct MockProcess : Process {
+  MockProcess(lldb::TargetSP target_sp, lldb::ListenerSP listener_sp)
+      : Process(target_sp, listener_sp) {}
+
+  llvm::StringRef GetPluginName() override { return "mock process"; }
+  bool CanDebug(lldb::TargetSP target, bool plugin_specified_by_name) override 
{
+    return false;
+  };
+  Status DoDestroy() override { return {}; }
+  void RefreshStateAfterStop() override {}
+  bool DoUpdateThreadList(ThreadList &old_thread_list,
+                          ThreadList &new_thread_list) override {
+    return false;
+  };
+  size_t DoReadMemory(lldb::addr_t vm_addr, void *buf, size_t size,
+                      Status &error) override {
+    for (size_t i = 0; i < size; ++i)
+      ((char *)buf)[i] = (vm_addr + i) & 0xff;
+    error.Clear();
+    return size;
+  }
+};
+
+class MockThread : public Thread {
+public:
+  MockThread(Process &process) : Thread(process, 1 /* tid */), m_reg_ctx_sp() 
{}
+  ~MockThread() override { DestroyThread(); }
+
+  void RefreshStateAfterStop() override {}
+  lldb::RegisterContextSP GetRegisterContext() override { return m_reg_ctx_sp; 
}
+  lldb::RegisterContextSP
+  CreateRegisterContextForFrame(StackFrame *frame) override {
+    return m_reg_ctx_sp;
+  }
+  bool CalculateStopInfo() override { return false; }
+
+  void SetRegisterContext(lldb::RegisterContextSP reg_ctx_sp) {
+    m_reg_ctx_sp = reg_ctx_sp;
+  }
+
+private:
+  lldb::RegisterContextSP m_reg_ctx_sp;
+};
+
+class MockRegisterContext : public RegisterContext {
+public:
+  MockRegisterContext(Thread &thread, const RegisterValue &reg_value)
+      : RegisterContext(thread, 0 /*concrete_frame_idx*/),
+        m_reg_value(reg_value) {}
+
+  void InvalidateAllRegisters() override {}
+  size_t GetRegisterCount() override { return 0; }
+  const RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override {
+    if (reg == 0x4000002a) {
+      return &m_reg_info;
+    }
+    return &m_reg_info; /* nullptr; */
+  }
+  size_t GetRegisterSetCount() override { return 0; }
+  const RegisterSet *GetRegisterSet(size_t reg_set) override { return nullptr; 
}
+  lldb::ByteOrder GetByteOrder() override {
+    return lldb::ByteOrder::eByteOrderLittle;
+  }
+  bool ReadRegister(const RegisterInfo *reg_info,
+                    RegisterValue &reg_value) override {
+    reg_value = m_reg_value;
+    return true;
+  }
+  bool WriteRegister(const RegisterInfo *reg_info,
+                     const RegisterValue &reg_value) override {
+    return false;
+  }
+  uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
+                                               uint32_t num) override {
+    return num;
+  }
----------------
DavidSpickett wrote:

Blank lines between these methods.

https://github.com/llvm/llvm-project/pull/151010
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