1 files changed, 150 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Plugins/DynamicLoader/Static/DynamicLoaderStatic.cpp b/contrib/llvm-project/lldb/source/Plugins/DynamicLoader/Static/DynamicLoaderStatic.cpp
new file mode 100644
index 000000000000..545998123dda
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+++ b/contrib/llvm-project/lldb/source/Plugins/DynamicLoader/Static/DynamicLoaderStatic.cpp
@@ -0,0 +1,150 @@
+//===-- DynamicLoaderStatic.cpp -------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Core/Module.h"
+#include "lldb/Core/PluginManager.h"
+#include "lldb/Core/Section.h"
+#include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Target/SectionLoadList.h"
+#include "lldb/Target/Target.h"
+
+#include "DynamicLoaderStatic.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+LLDB_PLUGIN_DEFINE(DynamicLoaderStatic)
+
+// Create an instance of this class. This function is filled into the plugin
+// info class that gets handed out by the plugin factory and allows the lldb to
+// instantiate an instance of this class.
+DynamicLoader *DynamicLoaderStatic::CreateInstance(Process *process,
+                                                   bool force) {
+  bool create = force;
+  if (!create) {
+    const llvm::Triple &triple_ref =
+        process->GetTarget().GetArchitecture().GetTriple();
+    const llvm::Triple::OSType os_type = triple_ref.getOS();
+    const llvm::Triple::ArchType arch_type = triple_ref.getArch();
+    if (os_type == llvm::Triple::UnknownOS) {
+      // The WASM and Hexagon plugin check the ArchType rather than the OSType,
+      // so explicitly reject those here.
+      switch(arch_type) {
+        case llvm::Triple::hexagon:
+        case llvm::Triple::wasm32:
+        case llvm::Triple::wasm64:
+          break;
+        default:
+          create = true;
+      }
+    }
+  }
+
+  if (!create) {
+    Module *exe_module = process->GetTarget().GetExecutableModulePointer();
+    if (exe_module) {
+      ObjectFile *object_file = exe_module->GetObjectFile();
+      if (object_file) {
+        create = (object_file->GetStrata() == ObjectFile::eStrataRawImage);
+      }
+    }
+  }
+
+  if (create)
+    return new DynamicLoaderStatic(process);
+  return nullptr;
+}
+
+// Constructor
+DynamicLoaderStatic::DynamicLoaderStatic(Process *process)
+    : DynamicLoader(process) {}
+
+/// Called after attaching a process.
+///
+/// Allow DynamicLoader plug-ins to execute some code after
+/// attaching to a process.
+void DynamicLoaderStatic::DidAttach() { LoadAllImagesAtFileAddresses(); }
+
+/// Called after attaching a process.
+///
+/// Allow DynamicLoader plug-ins to execute some code after
+/// attaching to a process.
+void DynamicLoaderStatic::DidLaunch() { LoadAllImagesAtFileAddresses(); }
+
+void DynamicLoaderStatic::LoadAllImagesAtFileAddresses() {
+  const ModuleList &module_list = m_process->GetTarget().GetImages();
+
+  ModuleList loaded_module_list;
+
+  // Disable JIT for static dynamic loader targets
+  m_process->SetCanJIT(false);
+
+  Target &target = m_process->GetTarget();
+  for (ModuleSP module_sp : module_list.Modules()) {
+    if (module_sp) {
+      bool changed = false;
+      bool no_load_addresses = true;
+      // If this module has a section with a load address set in
+      // the target, assume all necessary work is already done. There
+      // may be sections without a load address set intentionally
+      // and we don't want to mutate that.
+      // For a module with no load addresses set, set the load addresses
+      // to slide == 0, the same as the file addresses, in the target.
+      ObjectFile *image_object_file = module_sp->GetObjectFile();
+      if (image_object_file) {
+        SectionList *section_list = image_object_file->GetSectionList();
+        if (section_list) {
+          const size_t num_sections = section_list->GetSize();
+          for (size_t sect_idx = 0; sect_idx < num_sections; ++sect_idx) {
+            SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx));
+            if (section_sp) {
+              if (target.GetSectionLoadList().GetSectionLoadAddress(
+                      section_sp) != LLDB_INVALID_ADDRESS) {
+                no_load_addresses = false;
+                break;
+              }
+            }
+          }
+        }
+      }
+      if (no_load_addresses)
+        module_sp->SetLoadAddress(target, 0, true /*value_is_offset*/, changed);
+
+      if (changed)
+        loaded_module_list.AppendIfNeeded(module_sp);
+    }
+  }
+
+  target.ModulesDidLoad(loaded_module_list);
+}
+
+ThreadPlanSP
+DynamicLoaderStatic::GetStepThroughTrampolinePlan(Thread &thread,
+                                                  bool stop_others) {
+  return ThreadPlanSP();
+}
+
+Status DynamicLoaderStatic::CanLoadImage() {
+  Status error;
+  error.SetErrorString("can't load images on with a static debug session");
+  return error;
+}
+
+void DynamicLoaderStatic::Initialize() {
+  PluginManager::RegisterPlugin(GetPluginNameStatic(),
+                                GetPluginDescriptionStatic(), CreateInstance);
+}
+
+void DynamicLoaderStatic::Terminate() {
+  PluginManager::UnregisterPlugin(CreateInstance);
+}
+
+llvm::StringRef DynamicLoaderStatic::GetPluginDescriptionStatic() {
+  return "Dynamic loader plug-in that will load any images at the static "
+         "addresses contained in each image.";
+}