Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 216 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/source/Plugins/Process/Utility/RegisterContextThreadMemory.cpp b/gnu/llvm/lldb/source/Plugins/Process/Utility/RegisterContextThreadMemory.cpp
new file mode 100644
index 00000000000..bcf60cc7a33
--- /dev/null
+++ b/gnu/llvm/lldb/source/Plugins/Process/Utility/RegisterContextThreadMemory.cpp
@@ -0,0 +1,216 @@
+//===-- RegisterContextThreadMemory.cpp -------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Target/OperatingSystem.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/Thread.h"
+#include "lldb/Utility/Status.h"
+#include "lldb/lldb-private.h"
+
+#include "RegisterContextThreadMemory.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+RegisterContextThreadMemory::RegisterContextThreadMemory(
+    Thread &thread, lldb::addr_t register_data_addr)
+    : RegisterContext(thread, 0), m_thread_wp(thread.shared_from_this()),
+      m_reg_ctx_sp(), m_register_data_addr(register_data_addr), m_stop_id(0) {}
+
+RegisterContextThreadMemory::~RegisterContextThreadMemory() {}
+
+void RegisterContextThreadMemory::UpdateRegisterContext() {
+  ThreadSP thread_sp(m_thread_wp.lock());
+  if (thread_sp) {
+    ProcessSP process_sp(thread_sp->GetProcess());
+
+    if (process_sp) {
+      const uint32_t stop_id = process_sp->GetModID().GetStopID();
+      if (m_stop_id != stop_id) {
+        m_stop_id = stop_id;
+        m_reg_ctx_sp.reset();
+      }
+      if (!m_reg_ctx_sp) {
+        ThreadSP backing_thread_sp(thread_sp->GetBackingThread());
+        if (backing_thread_sp) {
+          m_reg_ctx_sp = backing_thread_sp->GetRegisterContext();
+        } else {
+          OperatingSystem *os = process_sp->GetOperatingSystem();
+          if (os->IsOperatingSystemPluginThread(thread_sp))
+            m_reg_ctx_sp = os->CreateRegisterContextForThread(
+                thread_sp.get(), m_register_data_addr);
+        }
+      }
+    } else {
+      m_reg_ctx_sp.reset();
+    }
+  } else {
+    m_reg_ctx_sp.reset();
+  }
+}
+
+// Subclasses must override these functions
+void RegisterContextThreadMemory::InvalidateAllRegisters() {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    m_reg_ctx_sp->InvalidateAllRegisters();
+}
+
+size_t RegisterContextThreadMemory::GetRegisterCount() {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->GetRegisterCount();
+  return 0;
+}
+
+const RegisterInfo *
+RegisterContextThreadMemory::GetRegisterInfoAtIndex(size_t reg) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->GetRegisterInfoAtIndex(reg);
+  return nullptr;
+}
+
+size_t RegisterContextThreadMemory::GetRegisterSetCount() {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->GetRegisterSetCount();
+  return 0;
+}
+
+const RegisterSet *RegisterContextThreadMemory::GetRegisterSet(size_t reg_set) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->GetRegisterSet(reg_set);
+  return nullptr;
+}
+
+bool RegisterContextThreadMemory::ReadRegister(const RegisterInfo *reg_info,
+                                               RegisterValue &reg_value) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->ReadRegister(reg_info, reg_value);
+  return false;
+}
+
+bool RegisterContextThreadMemory::WriteRegister(
+    const RegisterInfo *reg_info, const RegisterValue &reg_value) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->WriteRegister(reg_info, reg_value);
+  return false;
+}
+
+bool RegisterContextThreadMemory::ReadAllRegisterValues(
+    lldb::DataBufferSP &data_sp) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->ReadAllRegisterValues(data_sp);
+  return false;
+}
+
+bool RegisterContextThreadMemory::WriteAllRegisterValues(
+    const lldb::DataBufferSP &data_sp) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->WriteAllRegisterValues(data_sp);
+  return false;
+}
+
+bool RegisterContextThreadMemory::CopyFromRegisterContext(
+    lldb::RegisterContextSP reg_ctx_sp) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->CopyFromRegisterContext(reg_ctx_sp);
+  return false;
+}
+
+uint32_t RegisterContextThreadMemory::ConvertRegisterKindToRegisterNumber(
+    lldb::RegisterKind kind, uint32_t num) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->ConvertRegisterKindToRegisterNumber(kind, num);
+  return false;
+}
+
+uint32_t RegisterContextThreadMemory::NumSupportedHardwareBreakpoints() {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->NumSupportedHardwareBreakpoints();
+  return false;
+}
+
+uint32_t RegisterContextThreadMemory::SetHardwareBreakpoint(lldb::addr_t addr,
+                                                            size_t size) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->SetHardwareBreakpoint(addr, size);
+  return 0;
+}
+
+bool RegisterContextThreadMemory::ClearHardwareBreakpoint(uint32_t hw_idx) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->ClearHardwareBreakpoint(hw_idx);
+  return false;
+}
+
+uint32_t RegisterContextThreadMemory::NumSupportedHardwareWatchpoints() {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->NumSupportedHardwareWatchpoints();
+  return 0;
+}
+
+uint32_t RegisterContextThreadMemory::SetHardwareWatchpoint(lldb::addr_t addr,
+                                                            size_t size,
+                                                            bool read,
+                                                            bool write) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->SetHardwareWatchpoint(addr, size, read, write);
+  return 0;
+}
+
+bool RegisterContextThreadMemory::ClearHardwareWatchpoint(uint32_t hw_index) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->ClearHardwareWatchpoint(hw_index);
+  return false;
+}
+
+bool RegisterContextThreadMemory::HardwareSingleStep(bool enable) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->HardwareSingleStep(enable);
+  return false;
+}
+
+Status RegisterContextThreadMemory::ReadRegisterValueFromMemory(
+    const lldb_private::RegisterInfo *reg_info, lldb::addr_t src_addr,
+    uint32_t src_len, RegisterValue &reg_value) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->ReadRegisterValueFromMemory(reg_info, src_addr,
+                                                     src_len, reg_value);
+  Status error;
+  error.SetErrorString("invalid register context");
+  return error;
+}
+
+Status RegisterContextThreadMemory::WriteRegisterValueToMemory(
+    const lldb_private::RegisterInfo *reg_info, lldb::addr_t dst_addr,
+    uint32_t dst_len, const RegisterValue &reg_value) {
+  UpdateRegisterContext();
+  if (m_reg_ctx_sp)
+    return m_reg_ctx_sp->WriteRegisterValueToMemory(reg_info, dst_addr, dst_len,
+                                                    reg_value);
+  Status error;
+  error.SetErrorString("invalid register context");
+  return error;
+}