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Commit Graph

12 Commits

Author SHA1 Message Date
Eric Christopher
ae3c2b9adc Formatting and 80-col.
llvm-svn: 166075
2012-10-16 23:46:21 +00:00
Alexey Samsonov
0dd3d6f49e 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
e39e62d8e5 Add basic support for .debug_ranges section to LLVM's DebugInfo library.
This section (introduced in DWARF-3) is used to define instruction address
ranges for functions that are not contiguous and can't be described
by low_pc/high_pc attributes (this is the usual case for inlined subroutines).
The patch is the first step to support fetching complete inlining info from DWARF.

Reviewed by Benjamin Kramer.

llvm-svn: 162657
2012-08-27 07:17:47 +00:00
Alexey Samsonov
8832a9374f DebugInfo library: add support for fetching absolute paths to source files
(instead of basenames) from DWARF. Use this behavior in llvm-dwarfdump tool.

Reviewed by Benjamin Kramer.

llvm-svn: 160496
2012-07-19 07:03:58 +00:00
Alexey Samsonov
2e5d156c11 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
Michael J. Spencer
7037dc0b45 Fix a few changes I missed.
llvm-svn: 141392
2011-10-07 19:52:41 +00:00
Benjamin Kramer
b5c3c42a54 llvm-dwarfdump: Add an option to print out line info for a specific address
Usage:
$ llvm-dwarfdump -address=0x0000000100000ed4 a.out.dSYM/Contents/Resources/DWARF/a.out 
xxx.c:6:0

llvm-svn: 139850
2011-09-15 21:17:40 +00:00
Benjamin Kramer
900209189c DWARF: wire up .debug_str dumping.
llvm-svn: 139799
2011-09-15 16:57:13 +00:00
Benjamin Kramer
ceca872d69 DWARF: Add basic support for line tables.
The llvm-dwarfdump output isn't very verbose yet.

llvm-svn: 139771
2011-09-15 02:12:05 +00:00
Benjamin Kramer
b08f6dc724 llvm-dwarfdump: Make the "is debug info section" heuristic stricter so it doesn't accidentaly picks up the wrong section.
Also add some validation code to the aranges section parser.

Fixes PR10926.

llvm-svn: 139701
2011-09-14 17:28:13 +00:00
Benjamin Kramer
6b456ffb42 DWARF: Port support for parsing .debug_aranges section from LLDB and wire it up to llvm-dwarfdump.
This is only one half of it, the part that caches address ranges from the DIEs when .debug_aranges is
not available will be ported soon.

llvm-svn: 139680
2011-09-14 01:09:52 +00:00
Benjamin Kramer
c4e7a56915 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