113 lines
3.4 KiB
C++
113 lines
3.4 KiB
C++
//===-- InstrumentationRuntimeASan.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "InstrumentationRuntimeASan.h"
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#include "lldb/Breakpoint/StoppointCallbackContext.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/PluginInterface.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Symbol/Symbol.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Utility/RegularExpression.h"
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#include "Plugins/InstrumentationRuntime/Utility/ReportRetriever.h"
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using namespace lldb;
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using namespace lldb_private;
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LLDB_PLUGIN_DEFINE(InstrumentationRuntimeASan)
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lldb::InstrumentationRuntimeSP
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InstrumentationRuntimeASan::CreateInstance(const lldb::ProcessSP &process_sp) {
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return InstrumentationRuntimeSP(new InstrumentationRuntimeASan(process_sp));
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}
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void InstrumentationRuntimeASan::Initialize() {
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PluginManager::RegisterPlugin(
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GetPluginNameStatic(), "AddressSanitizer instrumentation runtime plugin.",
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CreateInstance, GetTypeStatic);
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}
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void InstrumentationRuntimeASan::Terminate() {
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PluginManager::UnregisterPlugin(CreateInstance);
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}
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lldb::InstrumentationRuntimeType InstrumentationRuntimeASan::GetTypeStatic() {
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return eInstrumentationRuntimeTypeAddressSanitizer;
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}
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InstrumentationRuntimeASan::~InstrumentationRuntimeASan() { Deactivate(); }
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const RegularExpression &
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InstrumentationRuntimeASan::GetPatternForRuntimeLibrary() {
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// FIXME: This shouldn't include the "dylib" suffix.
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static RegularExpression regex(
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llvm::StringRef("libclang_rt.asan_(.*)_dynamic\\.dylib"));
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return regex;
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}
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bool InstrumentationRuntimeASan::CheckIfRuntimeIsValid(
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const lldb::ModuleSP module_sp) {
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const Symbol *symbol = module_sp->FindFirstSymbolWithNameAndType(
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ConstString("__asan_get_alloc_stack"), lldb::eSymbolTypeAny);
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return symbol != nullptr;
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}
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bool InstrumentationRuntimeASan::NotifyBreakpointHit(
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void *baton, StoppointCallbackContext *context, user_id_t break_id,
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user_id_t break_loc_id) {
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assert(baton && "null baton");
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if (!baton)
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return false;
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InstrumentationRuntimeASan *const instance =
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static_cast<InstrumentationRuntimeASan *>(baton);
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ProcessSP process_sp = instance->GetProcessSP();
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return ReportRetriever::NotifyBreakpointHit(process_sp, context, break_id,
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break_loc_id);
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}
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void InstrumentationRuntimeASan::Activate() {
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if (IsActive())
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return;
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ProcessSP process_sp = GetProcessSP();
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if (!process_sp)
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return;
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Breakpoint *breakpoint = ReportRetriever::SetupBreakpoint(
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GetRuntimeModuleSP(), process_sp, ConstString("_ZN6__asanL7AsanDieEv"));
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if (!breakpoint)
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return;
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const bool sync = false;
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breakpoint->SetCallback(InstrumentationRuntimeASan::NotifyBreakpointHit, this,
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sync);
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breakpoint->SetBreakpointKind("address-sanitizer-report");
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SetBreakpointID(breakpoint->GetID());
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SetActive(true);
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}
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void InstrumentationRuntimeASan::Deactivate() {
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SetActive(false);
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if (GetBreakpointID() == LLDB_INVALID_BREAK_ID)
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return;
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if (ProcessSP process_sp = GetProcessSP()) {
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process_sp->GetTarget().RemoveBreakpointByID(GetBreakpointID());
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SetBreakpointID(LLDB_INVALID_BREAK_ID);
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}
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}
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