Commit Graph

23 Commits

Author SHA1 Message Date
Benjamin Kramer a7c40ef022 Canonicalize header guards into a common format.
Add header guards to files that were missing guards. Remove #endif comments
as they don't seem common in LLVM (we can easily add them back if we decide
they're useful)

Changes made by clang-tidy with minor tweaks.

llvm-svn: 215558
2014-08-13 16:26:38 +00:00
Alexey Samsonov aa90998c87 [DWARF parser] Use distinction between DW_AT_ranges_base and DW_AT_GNU_ranges_base instead of DWARF version
llvm-svn: 210945
2014-06-13 22:31:03 +00:00
Alexey Samsonov dce67348a8 [DWARF parser] Use enums instead of bitfields in DILineInfoSpecifier.
It is more appropriate than the current situation, when one flag
(AbsoluteFilePath) is relevant only if another flag is set.

This refactoring would also simplify fetching the short function name
(stored in DW_AT_name) instead of a linkage name returned currently.

No functionality change.

llvm-svn: 208921
2014-05-15 21:24:32 +00:00
Alexey Samsonov 8e4cf3b662 [DWARF parser] Compress DIEMinimal even further, simplify building DIE tree.
DIE doesn't need to store a pointer to its parent: we can traverse the DIE tree
only with functions getFirstChild() and getSibling(). Parents must be known
only when we construct the tree. Rewrite setDIERelations() procedure in a more
straightforward way, and get rid of lots of now unused DIEMinimal methods.

No functionality change.

llvm-svn: 207563
2014-04-29 17:12:42 +00:00
Craig Topper e73658ddbb [C++] Use 'nullptr'.
llvm-svn: 207394
2014-04-28 04:05:08 +00:00
Alexey Samsonov 762343da6c [DWARF parser] Refactor fetching DIE address ranges.
Add a helper method to get address ranges specified in a DIE
(either by DW_AT_low_pc/DW_AT_high_pc, or by DW_AT_ranges). Use it
to untangle and simplify the code.

No functionality change.

llvm-svn: 206624
2014-04-18 17:25:46 +00:00
Alexey Samsonov 1eabf98b32 [C++11] Convert DWARF parser to range-based for loops
llvm-svn: 203766
2014-03-13 07:52:54 +00:00
Alexey Samsonov 330b8939bb Merge DWARFDIE::extractFast and DWARFDIE::extract into one function.
Complicated CU-DIE-specific logic in the latter was never used,
and it makes sense to have safety checks for broken dwarf in the former.

llvm-svn: 193563
2013-10-28 23:58:58 +00:00
Alexey Samsonov a56bbf0c8c DWARF parser: Use ArrayRef to represent form sizes and simplify DWARFDIE::extractFast() interface. No functionality change.
llvm-svn: 193560
2013-10-28 23:41:49 +00:00
Alexey Samsonov 48cbda5850 DebugInfo: Introduce the notion of "form classes"
Summary:
Use DWARF4 table of form classes to fetch attributes from DIE
in a more consistent way. This shouldn't change the functionality and
serves as a refactoring for upcoming change: DW_AT_high_pc has different
semantics depending on its form class.

Reviewers: dblaikie, echristo

Reviewed By: echristo

CC: echristo, llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1961

llvm-svn: 193553
2013-10-28 23:01:48 +00:00
Alexey Samsonov caabb0eac1 [DebugInfo] Delete dead code, simplify and fix code style for some existing code. No functionality change.
llvm-svn: 192894
2013-10-17 13:28:16 +00:00
David Blaikie 07e22449a3 Exract most of DWARFCompileUnit into a new DWARFUnit to prepare for the coming DWARFTypeUnit.
llvm-svn: 191233
2013-09-23 22:44:40 +00:00
Alexey Samsonov e3ba81bf19 Add support for DebugFission to DWARF parser
Summary:
1) Make llvm-symbolizer properly symbolize
files with split debug info (by using stanalone .dwo files).
2) Make DWARFCompileUnit parse and store corresponding .dwo file,
if necessary.
3) Make bits of DWARF parsing more CompileUnit-oriented.

Reviewers: echristo

Reviewed By: echristo

CC: bkramer, llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1164

llvm-svn: 189329
2013-08-27 09:20:22 +00:00
Alexey Samsonov 3211e61b6d Store compile unit corresponding to each chain of inlined debug info entries. No functionality change.
llvm-svn: 187792
2013-08-06 10:49:15 +00:00
Alexey Samsonov c03f2ee0ae DWARF parser: remove duplicated code and fix code style in DIE extractors.
llvm-svn: 179023
2013-04-08 14:37:16 +00:00
Alexey Samsonov c942e6b781 Add support for fetching inlining context (stack of source code locations)
by instruction address from DWARF.

Add --inlining flag to llvm-dwarfdump to demonstrate and test this functionality,
so that "llvm-dwarfdump --inlining --address=0x..." now works much like
"addr2line -i 0x...", provided that the binary has debug info
(Clang's -gline-tables-only *is* enough).

llvm-svn: 163128
2012-09-04 08:12:33 +00:00
Alexey Samsonov b604ff2a07 Improve behavior of DebugInfoEntryMinimal::getSubprogramName() introduced in r159512.
To fetch a subprogram name we should not only inspect the DIE for this subprogram, but optionally inspect
its specification, or its abstract origin (even if there is no inlining), or even specification of an abstract origin.

Reviewed by Benjamin Kramer.

llvm-svn: 160365
2012-07-17 15:28:35 +00:00
Alexey Samsonov f4462fa3ca This patch extends the libLLVMDebugInfo which contains a minimalistic DWARF parser:
1) DIContext is now able to return function name for a given instruction address (besides file/line info).
2) llvm-dwarfdump accepts flag --functions that prints the function name (if address is specified by --address flag).
3) test case that checks the basic functionality of llvm-dwarfdump added

llvm-svn: 159512
2012-07-02 05:54:45 +00:00
Benjamin Kramer f7e0a31f8a Reduce the offsets in DwarfDebugInfoEntry to 32 bit, they're printed with %x and
that breaks on big-endian machines.

I have to clean up the 32/64 bit confusion in libDebugInfo some day.

llvm-svn: 143812
2011-11-05 15:35:00 +00:00
Benjamin Kramer 3266493603 DWARF: Generate the address lookup table from the DIE tree if .debug_aranges is not available.
Ported from LLDB.

llvm-svn: 139732
2011-09-14 20:52:27 +00:00
Benjamin Kramer 1b2a65ca3a DebugInfo: Don't print DIEs multiple times.
llvm-svn: 139671
2011-09-14 00:15:32 +00:00
Benjamin Kramer eaa7433c85 Style & indentation tweaks.
llvm-svn: 139646
2011-09-13 21:47:32 +00:00
Benjamin Kramer aa2f78f5e6 Sketch out a DWARF parser.
This introduces a new library to LLVM: libDebugInfo. It will provide debug information
parsing to LLVM. Much of the design and some of the code is taken from the LLDB project.

It also contains an llvm-dwarfdump tool that can dump the abbrevs and DIEs from an
object file. It can be used to write tests for DWARF input and output easily.

llvm-svn: 139627
2011-09-13 19:42:23 +00:00