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Commit Graph

6 Commits

Author SHA1 Message Date
George Rimar
58da0fde8b Revert r303978 "[DWARF] - Make collectAddressRanges() return section index in addition to Low/High PC"
It failed BB.

llvm-svn: 303981
2017-05-26 12:53:41 +00:00
George Rimar
6b12aaf784 [DWARF] - Make collectAddressRanges() return section index in addition to Low/High PC
This change is intended to use for LLD in D33183. 
Problem we have in LLD when building .gdb_index is that we need to know section 
which address range belongs to.

Previously it was solved on LLD side by providing fake section addresses
with use of llvm::LoadedObjectInfo interface. We assigned file offsets as addressed.
Then after obtaining ranges lists, for each range we had to find section ID's.
That not only was slow, but also complicated implementation and was the reason 
of incorrect behavior when
sections share the same offsets, like D33176 shows.

This patch makes DWARF parsers to return section index as well. 
That solves problem mentioned above.

Differential revision: https://reviews.llvm.org/D33184

llvm-svn: 303978
2017-05-26 12:46:41 +00:00
George Rimar
0219cd8ab5 [DWARF] - Use DWARFAddressRange struct instead of uint64_t pair for DWARFAddressRangesVector.
Recommit of r303159 "[DWARF] - Use DWARFAddressRange struct instead of uint64_t pair for DWARFAddressRangesVector"
All places were shitched to use DWARFAddressRange now.

Suggested during review of D33184.

llvm-svn: 303163
2017-05-16 12:30:59 +00:00
George Rimar
6c607daa04 [DWARF] - Take relocations in account when extracting ranges from .debug_ranges
I found this when investigated "Bug 32319 - .gdb_index is broken/incomplete" for LLD.

When we have object file with .debug_ranges section it may be filled with zeroes.
Relocations are exist in file to relocate this zeroes into real values later, but until that
a pair of zeroes is treated as terminator. And DWARF parser thinks there is no ranges at all
when I am trying to collect address ranges for building .gdb_index.

Solution implemented in this patch is to take relocations in account when parsing ranges.

Differential revision: https://reviews.llvm.org/D32228

llvm-svn: 301170
2017-04-24 10:19:45 +00:00
Eugene Zelenko
cf3512dc12 [DebugInfo] Fix some Include What You Use warnings; other minor fixes (NFC).
llvm-svn: 296559
2017-03-01 01:14:23 +00:00
Zachary Turner
9a7f59f9ea Move DebugInfo to DebugInfo/DWARF.
In preparation for adding PDB support to LLVM, this moves the
DWARF parsing code to its own subdirectory under DebugInfo, and
renames LLVMDebugInfo to LLVMDebugInfoDWARF.

This is purely a mechanical / build system change.

Differential Revision: http://reviews.llvm.org/D7269
Reviewed by: Eric Christopher

llvm-svn: 227586
2015-01-30 18:07:45 +00:00