| 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(name: GetPluginNameStatic(), |
| 27 | description: "PPC64-specific algorithms", |
| 28 | create_callback: &ArchitecturePPC64::Create); |
| 29 | } |
| 30 | |
| 31 | void ArchitecturePPC64::Terminate() { |
| 32 | PluginManager::UnregisterPlugin(create_callback: &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: 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(sym: 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(sym: func); |
| 58 | if (!loffs) |
| 59 | return; |
| 60 | |
| 61 | addr.SetOffset(addr.GetOffset() + loffs); |
| 62 | } |
| 63 |