forked from OSchip/llvm-project
128 lines
4.4 KiB
C++
128 lines
4.4 KiB
C++
//===-- BreakpointResolverFileLine.cpp --------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Breakpoint/BreakpointResolverFileLine.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Breakpoint/BreakpointLocation.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Symbol/CompileUnit.h"
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#include "lldb/Symbol/Function.h"
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// BreakpointResolverFileLine:
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//----------------------------------------------------------------------
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BreakpointResolverFileLine::BreakpointResolverFileLine
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(
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Breakpoint *bkpt,
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const FileSpec &file_spec,
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uint32_t line_no,
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lldb::addr_t offset,
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bool check_inlines,
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bool skip_prologue,
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bool exact_match
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) :
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BreakpointResolver (bkpt, BreakpointResolver::FileLineResolver, offset),
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m_file_spec (file_spec),
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m_line_number (line_no),
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m_inlines (check_inlines),
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m_skip_prologue(skip_prologue),
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m_exact_match(exact_match)
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{
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}
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BreakpointResolverFileLine::~BreakpointResolverFileLine ()
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{
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}
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Searcher::CallbackReturn
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BreakpointResolverFileLine::SearchCallback
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(
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SearchFilter &filter,
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SymbolContext &context,
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Address *addr,
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bool containing
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)
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{
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SymbolContextList sc_list;
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assert (m_breakpoint != NULL);
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// There is a tricky bit here. You can have two compilation units that #include the same file, and
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// in one of them the function at m_line_number is used (and so code and a line entry for it is generated) but in the
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// other it isn't. If we considered the CU's independently, then in the second inclusion, we'd move the breakpoint
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// to the next function that actually generated code in the header file. That would end up being confusing.
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// So instead, we do the CU iterations by hand here, then scan through the complete list of matches, and figure out
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// the closest line number match, and only set breakpoints on that match.
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// Note also that if file_spec only had a file name and not a directory, there may be many different file spec's in
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// the resultant list. The closest line match for one will not be right for some totally different file.
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// So we go through the match list and pull out the sets that have the same file spec in their line_entry
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// and treat each set separately.
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const size_t num_comp_units = context.module_sp->GetNumCompileUnits();
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for (size_t i = 0; i < num_comp_units; i++)
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{
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CompUnitSP cu_sp (context.module_sp->GetCompileUnitAtIndex (i));
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if (cu_sp)
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{
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if (filter.CompUnitPasses(*cu_sp))
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cu_sp->ResolveSymbolContext (m_file_spec, m_line_number, m_inlines, m_exact_match, eSymbolContextEverything, sc_list);
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}
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}
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StreamString s;
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s.Printf ("for %s:%d ",
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m_file_spec.GetFilename().AsCString("<Unknown>"),
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m_line_number);
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SetSCMatchesByLine (filter, sc_list, m_skip_prologue, s.GetData());
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return Searcher::eCallbackReturnContinue;
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}
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Searcher::Depth
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BreakpointResolverFileLine::GetDepth()
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{
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return Searcher::eDepthModule;
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}
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void
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BreakpointResolverFileLine::GetDescription (Stream *s)
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{
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s->Printf ("file = '%s', line = %u, exact_match = %d", m_file_spec.GetPath().c_str(), m_line_number, m_exact_match);
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}
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void
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BreakpointResolverFileLine::Dump (Stream *s) const
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{
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}
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lldb::BreakpointResolverSP
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BreakpointResolverFileLine::CopyForBreakpoint (Breakpoint &breakpoint)
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{
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lldb::BreakpointResolverSP ret_sp(new BreakpointResolverFileLine(&breakpoint,
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m_file_spec,
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m_line_number,
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m_offset,
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m_inlines,
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m_skip_prologue,
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m_exact_match));
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return ret_sp;
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}
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