243 lines
7.3 KiB
C++
243 lines
7.3 KiB
C++
//===-- LineEntry.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/Symbol/LineEntry.h"
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#include "lldb/Symbol/CompileUnit.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Target.h"
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using namespace lldb_private;
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LineEntry::LineEntry()
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: range(), file(), line(LLDB_INVALID_LINE_NUMBER), column(0),
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is_start_of_statement(0), is_start_of_basic_block(0), is_prologue_end(0),
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is_epilogue_begin(0), is_terminal_entry(0) {}
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LineEntry::LineEntry(const lldb::SectionSP §ion_sp,
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lldb::addr_t section_offset, lldb::addr_t byte_size,
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const FileSpec &_file, uint32_t _line, uint16_t _column,
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bool _is_start_of_statement, bool _is_start_of_basic_block,
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bool _is_prologue_end, bool _is_epilogue_begin,
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bool _is_terminal_entry)
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: range(section_sp, section_offset, byte_size), file(_file),
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original_file(_file), line(_line), column(_column),
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is_start_of_statement(_is_start_of_statement),
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is_start_of_basic_block(_is_start_of_basic_block),
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is_prologue_end(_is_prologue_end), is_epilogue_begin(_is_epilogue_begin),
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is_terminal_entry(_is_terminal_entry) {}
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void LineEntry::Clear() {
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range.Clear();
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file.Clear();
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original_file.Clear();
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line = LLDB_INVALID_LINE_NUMBER;
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column = 0;
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is_start_of_statement = 0;
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is_start_of_basic_block = 0;
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is_prologue_end = 0;
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is_epilogue_begin = 0;
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is_terminal_entry = 0;
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}
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bool LineEntry::IsValid() const {
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return range.GetBaseAddress().IsValid() && line != LLDB_INVALID_LINE_NUMBER;
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}
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bool LineEntry::DumpStopContext(Stream *s, bool show_fullpaths) const {
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bool result = false;
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if (file) {
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if (show_fullpaths)
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file.Dump(s);
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else
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file.GetFilename().Dump(s);
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if (line)
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s->PutChar(':');
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result = true;
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}
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if (line)
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s->Printf("%u", line);
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else
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result = false;
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return result;
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}
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bool LineEntry::Dump(Stream *s, Target *target, bool show_file,
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Address::DumpStyle style,
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Address::DumpStyle fallback_style, bool show_range) const {
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if (show_range) {
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// Show address range
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if (!range.Dump(s, target, style, fallback_style))
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return false;
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} else {
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// Show address only
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if (!range.GetBaseAddress().Dump(s, target, style, fallback_style))
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return false;
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}
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if (show_file)
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*s << ", file = " << file;
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if (line)
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s->Printf(", line = %u", line);
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if (column)
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s->Printf(", column = %u", column);
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if (is_start_of_statement)
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*s << ", is_start_of_statement = TRUE";
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if (is_start_of_basic_block)
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*s << ", is_start_of_basic_block = TRUE";
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if (is_prologue_end)
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*s << ", is_prologue_end = TRUE";
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if (is_epilogue_begin)
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*s << ", is_epilogue_begin = TRUE";
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if (is_terminal_entry)
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*s << ", is_terminal_entry = TRUE";
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return true;
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}
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bool LineEntry::GetDescription(Stream *s, lldb::DescriptionLevel level,
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CompileUnit *cu, Target *target,
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bool show_address_only) const {
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if (level == lldb::eDescriptionLevelBrief ||
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level == lldb::eDescriptionLevelFull) {
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if (show_address_only) {
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range.GetBaseAddress().Dump(s, target, Address::DumpStyleLoadAddress,
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Address::DumpStyleFileAddress);
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} else {
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range.Dump(s, target, Address::DumpStyleLoadAddress,
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Address::DumpStyleFileAddress);
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}
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*s << ": " << file;
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if (line) {
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s->Printf(":%u", line);
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if (column)
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s->Printf(":%u", column);
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}
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if (level == lldb::eDescriptionLevelFull) {
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if (is_start_of_statement)
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*s << ", is_start_of_statement = TRUE";
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if (is_start_of_basic_block)
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*s << ", is_start_of_basic_block = TRUE";
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if (is_prologue_end)
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*s << ", is_prologue_end = TRUE";
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if (is_epilogue_begin)
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*s << ", is_epilogue_begin = TRUE";
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if (is_terminal_entry)
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*s << ", is_terminal_entry = TRUE";
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} else {
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if (is_terminal_entry)
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s->EOL();
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}
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} else {
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return Dump(s, target, true, Address::DumpStyleLoadAddress,
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Address::DumpStyleModuleWithFileAddress, true);
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}
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return true;
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}
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bool lldb_private::operator<(const LineEntry &a, const LineEntry &b) {
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return LineEntry::Compare(a, b) < 0;
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}
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int LineEntry::Compare(const LineEntry &a, const LineEntry &b) {
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int result = Address::CompareFileAddress(a.range.GetBaseAddress(),
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b.range.GetBaseAddress());
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if (result != 0)
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return result;
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const lldb::addr_t a_byte_size = a.range.GetByteSize();
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const lldb::addr_t b_byte_size = b.range.GetByteSize();
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if (a_byte_size < b_byte_size)
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return -1;
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if (a_byte_size > b_byte_size)
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return +1;
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// Check for an end sequence entry mismatch after we have determined
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// that the address values are equal. If one of the items is an end
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// sequence, we don't care about the line, file, or column info.
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if (a.is_terminal_entry > b.is_terminal_entry)
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return -1;
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if (a.is_terminal_entry < b.is_terminal_entry)
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return +1;
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if (a.line < b.line)
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return -1;
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if (a.line > b.line)
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return +1;
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if (a.column < b.column)
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return -1;
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if (a.column > b.column)
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return +1;
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return FileSpec::Compare(a.file, b.file, true);
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}
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AddressRange LineEntry::GetSameLineContiguousAddressRange() const {
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// Add each LineEntry's range to complete_line_range until we find
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// a different file / line number.
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AddressRange complete_line_range = range;
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while (true) {
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SymbolContext next_line_sc;
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Address range_end(complete_line_range.GetBaseAddress());
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range_end.Slide(complete_line_range.GetByteSize());
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range_end.CalculateSymbolContext(&next_line_sc,
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lldb::eSymbolContextLineEntry);
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if (next_line_sc.line_entry.IsValid() &&
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next_line_sc.line_entry.range.GetByteSize() > 0 &&
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original_file == next_line_sc.line_entry.original_file) {
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// Include any line 0 entries - they indicate that this is
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// compiler-generated code
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// that does not correspond to user source code.
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if (next_line_sc.line_entry.line == 0) {
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complete_line_range.SetByteSize(
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complete_line_range.GetByteSize() +
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next_line_sc.line_entry.range.GetByteSize());
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continue;
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}
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if (line == next_line_sc.line_entry.line) {
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// next_line_sc is the same file & line as this LineEntry, so extend our
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// AddressRange by its size and continue to see if there are more
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// LineEntries
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// that we can combine.
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complete_line_range.SetByteSize(
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complete_line_range.GetByteSize() +
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next_line_sc.line_entry.range.GetByteSize());
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continue;
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}
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}
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break;
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}
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return complete_line_range;
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}
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void LineEntry::ApplyFileMappings(lldb::TargetSP target_sp) {
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if (target_sp) {
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// Apply any file remappings to our file
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FileSpec new_file_spec;
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if (target_sp->GetSourcePathMap().FindFile(original_file, new_file_spec))
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file = new_file_spec;
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}
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}
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