[Lldb-commits] [lldb] [lldb][AIX] Added base files for NativeProcess Support for AIX (PR #118160)

[Pavel Labath via lldb-commits]

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@@ -0,0 +1,130 @@
+//===-- NativeProcessAIX.h ---------------------------------- -*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_NativeProcessAIX_H_
+#define liblldb_NativeProcessAIX_H_
+
+#include <csignal>
+#include <unordered_set>
+
+#include "lldb/Host/Debug.h"
+#include "lldb/Host/HostThread.h"
+#include "lldb/Target/MemoryRegionInfo.h"
+#include "lldb/Utility/ArchSpec.h"
+#include "lldb/Utility/FileSpec.h"
+#include "lldb/lldb-types.h"
+#include "llvm/ADT/SmallPtrSet.h"
+
+#include "NativeThreadAIX.h"
+#include "Plugins/Process/Utility/NativeProcessSoftwareSingleStep.h"
+#include "lldb/Host/common/NativeProcessProtocol.h"
+
+namespace lldb_private {
+class Status;
+class Scalar;
+
+namespace process_aix {
+/// \class NativeProcessAIX
+/// Manages communication with the inferior (debugee) process.
+///
+/// Upon construction, this class prepares and launches an inferior process
+/// for debugging.
+///
+/// Changes in the inferior process state are broadcasted.
+class NativeProcessAIX : public NativeProcessProtocol,
+                         private NativeProcessSoftwareSingleStep {
+public:
+  class Manager : public NativeProcessProtocol::Manager {
+  public:
+    Manager(MainLoop &mainloop);
+
+    llvm::Expected<std::unique_ptr<NativeProcessProtocol>>
+    Launch(ProcessLaunchInfo &launch_info,
+           NativeDelegate &native_delegate) override;
+
+    llvm::Expected<std::unique_ptr<NativeProcessProtocol>>
+    Attach(lldb::pid_t pid, NativeDelegate &native_delegate) override;
+
+    Extension GetSupportedExtensions() const override;
+
+    void AddProcess(NativeProcessAIX &process) { m_processes.insert(&process); }
+
+    void RemoveProcess(NativeProcessAIX &process) {
+      m_processes.erase(&process);
+    }
+
+    // Collect an event for the given tid, waiting for it if necessary.
+    void CollectThread(::pid_t tid);
+
+  private:
+    MainLoop::SignalHandleUP m_sigchld_handle;
+
+    llvm::SmallPtrSet<NativeProcessAIX *, 2> m_processes;
+
+    void SigchldHandler();
+  };
+
+  // NativeProcessProtocol Interface
+
+  ~NativeProcessAIX() override { m_manager.RemoveProcess(*this); }
+
+  Status Resume(const ResumeActionList &resume_actions) override;
+
+  Status Halt() override;
+
+  Status Detach() override;
+
+  Status Signal(int signo) override;
+
+  Status Interrupt() override;
+
+  Status Kill() override;
+
+  const ArchSpec &GetArchitecture() const override { return m_arch; }
+
+  Status SetBreakpoint(lldb::addr_t addr, uint32_t size,
+                       bool hardware) override;
+
+  Status RemoveBreakpoint(lldb::addr_t addr, bool hardware = false) override;
+
+  Status GetFileLoadAddress(const llvm::StringRef &file_name,
+                            lldb::addr_t &load_addr) override;
+
+  static Status PtraceWrapper(int req, lldb::pid_t pid, void *addr = nullptr,
+                              void *data = nullptr, size_t data_size = 0,
+                              long *result = nullptr);
+
+  // Wrapper for ptrace to catch errors and log calls. Note that ptrace sets
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labath wrote:

This looks wrong.

https://github.com/llvm/llvm-project/pull/118160