forked from OSchip/llvm-project
188 lines
6.7 KiB
C++
188 lines
6.7 KiB
C++
//===-- BreakpointResolverAddress.cpp ---------------------------*- C++ -*-===//
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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 "lldb/Breakpoint/BreakpointResolverAddress.h"
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#include "lldb/Breakpoint/BreakpointLocation.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/StreamString.h"
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using namespace lldb;
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using namespace lldb_private;
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// BreakpointResolverAddress:
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BreakpointResolverAddress::BreakpointResolverAddress(
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Breakpoint *bkpt, const Address &addr, const FileSpec &module_spec)
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: BreakpointResolver(bkpt, BreakpointResolver::AddressResolver),
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m_addr(addr), m_resolved_addr(LLDB_INVALID_ADDRESS),
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m_module_filespec(module_spec) {}
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BreakpointResolverAddress::BreakpointResolverAddress(Breakpoint *bkpt,
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const Address &addr)
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: BreakpointResolver(bkpt, BreakpointResolver::AddressResolver),
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m_addr(addr), m_resolved_addr(LLDB_INVALID_ADDRESS), m_module_filespec() {
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}
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BreakpointResolverAddress::~BreakpointResolverAddress() {}
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BreakpointResolver *BreakpointResolverAddress::CreateFromStructuredData(
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Breakpoint *bkpt, const StructuredData::Dictionary &options_dict,
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Status &error) {
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llvm::StringRef module_name;
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lldb::addr_t addr_offset;
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FileSpec module_filespec;
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bool success;
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success = options_dict.GetValueForKeyAsInteger(
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GetKey(OptionNames::AddressOffset), addr_offset);
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if (!success) {
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error.SetErrorString("BRFL::CFSD: Couldn't find address offset entry.");
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return nullptr;
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}
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Address address(addr_offset);
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success = options_dict.HasKey(GetKey(OptionNames::ModuleName));
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if (success) {
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success = options_dict.GetValueForKeyAsString(
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GetKey(OptionNames::ModuleName), module_name);
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if (!success) {
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error.SetErrorString("BRA::CFSD: Couldn't read module name entry.");
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return nullptr;
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}
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module_filespec.SetFile(module_name, FileSpec::Style::native);
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}
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return new BreakpointResolverAddress(bkpt, address, module_filespec);
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}
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StructuredData::ObjectSP
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BreakpointResolverAddress::SerializeToStructuredData() {
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StructuredData::DictionarySP options_dict_sp(
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new StructuredData::Dictionary());
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SectionSP section_sp = m_addr.GetSection();
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if (section_sp) {
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ModuleSP module_sp = section_sp->GetModule();
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ConstString module_name;
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if (module_sp)
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module_name.SetCString(module_name.GetCString());
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options_dict_sp->AddStringItem(GetKey(OptionNames::ModuleName),
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module_name.GetCString());
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options_dict_sp->AddIntegerItem(GetKey(OptionNames::AddressOffset),
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m_addr.GetOffset());
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} else {
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options_dict_sp->AddIntegerItem(GetKey(OptionNames::AddressOffset),
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m_addr.GetOffset());
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if (m_module_filespec) {
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options_dict_sp->AddStringItem(GetKey(OptionNames::ModuleName),
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m_module_filespec.GetPath());
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}
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}
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return WrapOptionsDict(options_dict_sp);
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return StructuredData::ObjectSP();
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}
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void BreakpointResolverAddress::ResolveBreakpoint(SearchFilter &filter) {
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// If the address is not section relative, then we should not try to re-
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// resolve it, it is just some random address and we wouldn't know what to do
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// on reload. But if it is section relative, we need to re-resolve it since
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// the section it's in may have shifted on re-run.
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bool re_resolve = false;
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if (m_addr.GetSection() || m_module_filespec)
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re_resolve = true;
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else if (m_breakpoint->GetNumLocations() == 0)
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re_resolve = true;
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if (re_resolve)
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BreakpointResolver::ResolveBreakpoint(filter);
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}
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void BreakpointResolverAddress::ResolveBreakpointInModules(
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SearchFilter &filter, ModuleList &modules) {
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// See comment in ResolveBreakpoint.
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bool re_resolve = false;
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if (m_addr.GetSection())
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re_resolve = true;
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else if (m_breakpoint->GetNumLocations() == 0)
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re_resolve = true;
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if (re_resolve)
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BreakpointResolver::ResolveBreakpointInModules(filter, modules);
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}
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Searcher::CallbackReturn
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BreakpointResolverAddress::SearchCallback(SearchFilter &filter,
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SymbolContext &context, Address *addr,
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bool containing) {
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assert(m_breakpoint != NULL);
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if (filter.AddressPasses(m_addr)) {
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if (m_breakpoint->GetNumLocations() == 0) {
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// If the address is just an offset, and we're given a module, see if we
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// can find the appropriate module loaded in the binary, and fix up
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// m_addr to use that.
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if (!m_addr.IsSectionOffset() && m_module_filespec) {
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Target &target = m_breakpoint->GetTarget();
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ModuleSpec module_spec(m_module_filespec);
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ModuleSP module_sp = target.GetImages().FindFirstModule(module_spec);
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if (module_sp) {
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Address tmp_address;
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if (module_sp->ResolveFileAddress(m_addr.GetOffset(), tmp_address))
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m_addr = tmp_address;
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}
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}
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m_resolved_addr = m_addr.GetLoadAddress(&m_breakpoint->GetTarget());
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BreakpointLocationSP bp_loc_sp(AddLocation(m_addr));
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if (bp_loc_sp && !m_breakpoint->IsInternal()) {
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StreamString s;
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bp_loc_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose);
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Log *log(
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lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_BREAKPOINTS));
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if (log)
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log->Printf("Added location: %s\n", s.GetData());
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}
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} else {
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BreakpointLocationSP loc_sp = m_breakpoint->GetLocationAtIndex(0);
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lldb::addr_t cur_load_location =
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m_addr.GetLoadAddress(&m_breakpoint->GetTarget());
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if (cur_load_location != m_resolved_addr) {
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m_resolved_addr = cur_load_location;
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loc_sp->ClearBreakpointSite();
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loc_sp->ResolveBreakpointSite();
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}
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}
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}
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return Searcher::eCallbackReturnStop;
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}
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lldb::SearchDepth BreakpointResolverAddress::GetDepth() {
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return lldb::eSearchDepthTarget;
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}
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void BreakpointResolverAddress::GetDescription(Stream *s) {
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s->PutCString("address = ");
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m_addr.Dump(s, m_breakpoint->GetTarget().GetProcessSP().get(),
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Address::DumpStyleModuleWithFileAddress,
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Address::DumpStyleLoadAddress);
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}
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void BreakpointResolverAddress::Dump(Stream *s) const {}
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lldb::BreakpointResolverSP
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BreakpointResolverAddress::CopyForBreakpoint(Breakpoint &breakpoint) {
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lldb::BreakpointResolverSP ret_sp(
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new BreakpointResolverAddress(&breakpoint, m_addr));
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return ret_sp;
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}
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