ArchitecturePPC64.cpp
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//===-- ArchitecturePPC64.cpp ---------------------------------------------===//
//
// 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 "Plugins/Architecture/PPC64/ArchitecturePPC64.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/ArchSpec.h"
#include "llvm/BinaryFormat/ELF.h"
using namespace lldb_private;
using namespace lldb;
LLDB_PLUGIN_DEFINE(ArchitecturePPC64)
ConstString ArchitecturePPC64::GetPluginNameStatic() {
return ConstString("ppc64");
}
void ArchitecturePPC64::Initialize() {
PluginManager::RegisterPlugin(GetPluginNameStatic(),
"PPC64-specific algorithms",
&ArchitecturePPC64::Create);
}
void ArchitecturePPC64::Terminate() {
PluginManager::UnregisterPlugin(&ArchitecturePPC64::Create);
}
std::unique_ptr<Architecture> ArchitecturePPC64::Create(const ArchSpec &arch) {
if (arch.GetTriple().isPPC64() &&
arch.GetTriple().getObjectFormat() == llvm::Triple::ObjectFormatType::ELF)
return std::unique_ptr<Architecture>(new ArchitecturePPC64());
return nullptr;
}
ConstString ArchitecturePPC64::GetPluginName() { return GetPluginNameStatic(); }
uint32_t ArchitecturePPC64::GetPluginVersion() { return 1; }
static int32_t GetLocalEntryOffset(const Symbol &sym) {
unsigned char other = sym.GetFlags() >> 8 & 0xFF;
return llvm::ELF::decodePPC64LocalEntryOffset(other);
}
size_t ArchitecturePPC64::GetBytesToSkip(Symbol &func,
const Address &curr_addr) const {
if (curr_addr.GetFileAddress() ==
func.GetFileAddress() + GetLocalEntryOffset(func))
return func.GetPrologueByteSize();
return 0;
}
void ArchitecturePPC64::AdjustBreakpointAddress(const Symbol &func,
Address &addr) const {
int32_t loffs = GetLocalEntryOffset(func);
if (!loffs)
return;
addr.SetOffset(addr.GetOffset() + loffs);
}