1 //===-- ArchitecturePPC64.cpp ---------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "Plugins/Architecture/PPC64/ArchitecturePPC64.h" 10 #include "lldb/Core/PluginManager.h" 11 #include "lldb/Symbol/Function.h" 12 #include "lldb/Symbol/Symbol.h" 13 #include "lldb/Target/RegisterContext.h" 14 #include "lldb/Target/Target.h" 15 #include "lldb/Target/Thread.h" 16 #include "lldb/Utility/ArchSpec.h" 17 18 #include "llvm/BinaryFormat/ELF.h" 19 20 using namespace lldb_private; 21 using namespace lldb; 22 23 LLDB_PLUGIN_DEFINE(ArchitecturePPC64) 24 25 void ArchitecturePPC64::Initialize() { 26 PluginManager::RegisterPlugin(GetPluginNameStatic(), 27 "PPC64-specific algorithms", 28 &ArchitecturePPC64::Create); 29 } 30 31 void ArchitecturePPC64::Terminate() { 32 PluginManager::UnregisterPlugin(&ArchitecturePPC64::Create); 33 } 34 35 std::unique_ptr<Architecture> ArchitecturePPC64::Create(const ArchSpec &arch) { 36 if (arch.GetTriple().isPPC64() && 37 arch.GetTriple().getObjectFormat() == llvm::Triple::ObjectFormatType::ELF) 38 return std::unique_ptr<Architecture>(new ArchitecturePPC64()); 39 return nullptr; 40 } 41 42 static int32_t GetLocalEntryOffset(const Symbol &sym) { 43 unsigned char other = sym.GetFlags() >> 8 & 0xFF; 44 return llvm::ELF::decodePPC64LocalEntryOffset(other); 45 } 46 47 size_t ArchitecturePPC64::GetBytesToSkip(Symbol &func, 48 const Address &curr_addr) const { 49 if (curr_addr.GetFileAddress() == 50 func.GetFileAddress() + GetLocalEntryOffset(func)) 51 return func.GetPrologueByteSize(); 52 return 0; 53 } 54 55 void ArchitecturePPC64::AdjustBreakpointAddress(const Symbol &func, 56 Address &addr) const { 57 int32_t loffs = GetLocalEntryOffset(func); 58 if (!loffs) 59 return; 60 61 addr.SetOffset(addr.GetOffset() + loffs); 62 } 63