1 files changed, 90 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.h b/contrib/llvm-project/lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.h
new file mode 100644
index 000000000000..30c69de81dfc
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.h
@@ -0,0 +1,90 @@
+//===-- DisassemblerLLVMC.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 LLDB_SOURCE_PLUGINS_DISASSEMBLER_LLVMC_DISASSEMBLERLLVMC_H
+#define LLDB_SOURCE_PLUGINS_DISASSEMBLER_LLVMC_DISASSEMBLERLLVMC_H
+
+#include <memory>
+#include <mutex>
+#include <optional>
+#include <string>
+
+#include "lldb/Core/Address.h"
+#include "lldb/Core/Disassembler.h"
+#include "lldb/Core/PluginManager.h"
+
+class InstructionLLVMC;
+
+class DisassemblerLLVMC : public lldb_private::Disassembler {
+public:
+  DisassemblerLLVMC(const lldb_private::ArchSpec &arch,
+                    const char *flavor /* = NULL */);
+
+  ~DisassemblerLLVMC() override;
+
+  // Static Functions
+  static void Initialize();
+
+  static void Terminate();
+
+  static llvm::StringRef GetPluginNameStatic() { return "llvm-mc"; }
+
+  static lldb::DisassemblerSP CreateInstance(const lldb_private::ArchSpec &arch,
+                                             const char *flavor);
+
+  size_t DecodeInstructions(const lldb_private::Address &base_addr,
+                            const lldb_private::DataExtractor &data,
+                            lldb::offset_t data_offset, size_t num_instructions,
+                            bool append, bool data_from_file) override;
+
+  // PluginInterface protocol
+  llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
+
+protected:
+  friend class InstructionLLVMC;
+
+  bool FlavorValidForArchSpec(const lldb_private::ArchSpec &arch,
+                              const char *flavor) override;
+
+  bool IsValid() const;
+
+  int OpInfo(uint64_t PC, uint64_t Offset, uint64_t Size, int TagType,
+             void *TagBug);
+
+  const char *SymbolLookup(uint64_t ReferenceValue, uint64_t *ReferenceType,
+                           uint64_t ReferencePC, const char **ReferenceName);
+
+  static int OpInfoCallback(void *DisInfo, uint64_t PC, uint64_t Offset,
+                            uint64_t Size, int TagType, void *TagBug);
+
+  static const char *SymbolLookupCallback(void *DisInfo,
+                                          uint64_t ReferenceValue,
+                                          uint64_t *ReferenceType,
+                                          uint64_t ReferencePC,
+                                          const char **ReferenceName);
+
+  const lldb_private::ExecutionContext *m_exe_ctx;
+  InstructionLLVMC *m_inst;
+  std::mutex m_mutex;
+  bool m_data_from_file;
+  // Save the AArch64 ADRP instruction word and address it was at,
+  // in case the next instruction is an ADD to the same register;
+  // this is a pc-relative address calculation and we need both
+  // parts to calculate the symbolication.
+  lldb::addr_t m_adrp_address;
+  std::optional<uint32_t> m_adrp_insn;
+
+  // Since we need to make two actual MC Disassemblers for ARM (ARM & THUMB),
+  // and there's a bit of goo to set up and own in the MC disassembler world,
+  // this class was added to manage the actual disassemblers.
+  class MCDisasmInstance;
+  std::unique_ptr<MCDisasmInstance> m_disasm_up;
+  std::unique_ptr<MCDisasmInstance> m_alternate_disasm_up;
+};
+
+#endif // LLDB_SOURCE_PLUGINS_DISASSEMBLER_LLVMC_DISASSEMBLERLLVMC_H