2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
240 lines
7.3 KiB
C++
240 lines
7.3 KiB
C++
//===-- LineEntry.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/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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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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}
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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->PutChar(':');
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s->Printf("%u", column);
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}
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}
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return file || line;
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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 that the
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// address values are equal. If one of the items is an end sequence, we don't
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// 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 a
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// 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 compiler-
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// generated code 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
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// our AddressRange by its size and continue to see if there are more
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// LineEntries 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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