Summary:
The issue arises because LLDB is not
able to read the vdso library correctly.
The fix adds memory allocation callbacks
to allocate sufficient memory in case the
requested offsets don't fit in the memory
buffer allocated for the ELF.
Reviewers: lldb-commits, clayborg, deepak2427, ovyalov, labath, tberghammer
Differential Revision: http://reviews.llvm.org/D16107
llvm-svn: 258122
The ELF symbol table always contain the size of the symbols so we
don't have to try to guess them based on the address of the next
symbol (it is needed for mach-o).
The change fixes an issue when a symbol is removed after a 0 size
symbol (e.g. because the second one is not public) what previously
caused the symbol lookup algorithm to end up with showing the 0 size
symbol even for the later addresses (what are not part of any symbol).
That symbol lookup error can confuse the user and also confuses the
current stack unwinder.
Re-commit this CL after fixing the issue with gcc-4.9.2 on i386 Linux.
Differential revision: http://reviews.llvm.org/D16186
llvm-svn: 258113
The ELF symbol table always contain the size of the symbols so we
don't have to try to guess them based on the address of the next
symbol (it is needed for mach-o).
The change fixes an issue when a symbol is removed after a 0 size
symbol (e.g. because the second one is not public) what previously
caused the symbol lookup algorithm to end up with showing the 0 size
symbol even for the later addresses (what are not part of any symbol).
That symbol lookup error can confuse the user and also confuses the
current stack unwinder.
Differential revision: http://reviews.llvm.org/D16186
llvm-svn: 258040
Summary:
This was used with the old ARM vs. Thumb detection code but is not
required anymore.
Reviewers: tberghammer, clayborg
Subscribers: fjricci, aemerson, lldb-commits, rengolin
Differential Revision: http://reviews.llvm.org/D16099
llvm-svn: 257429
(There are changes in the copies of these four files in the FreeBSD base
system, and I've changed these ones to reduce gratuitous diffs in future
imports.)
llvm-svn: 256723
Summary:
DWARF 5 proposes a reinvented .debug_macro section. This change follows
that spec.
Currently, only GCC produces the .debug_macro section and hence
the added test is annottated with expectedFailureClang.
Reviewers: spyffe, clayborg, tberghammer
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D15437
llvm-svn: 255729
To do this I added a few new ways to determine the OS from PT_NOTE notes in the ELF file:
1 - Look for "LINUX" notes which indicate "linux" should be the OS
2 - Look through the "CORE" notes with NT_FILE as the type and sniff data from the paths listed in this section. On Ubuntu they contain "/lib/x86_64-linux-gnu" which has the triple and allows us to set "linux" as the OS in the architecture returned from ObjectFileELF::GetArchitecture().
Setting the OS correctly allows us to get the triple correct so we can extract registers without asserting and killing LLDB.
Also use the data from the NT_FILE to set the main executable if one isn't set in ProcessElfCore::DoLoadCore().
llvm-svn: 251537
* Remove an unneccessary re-computaion on arch spec from the ELF file
* Use a local cache to optimize name based section lookups in symtab
parsing
* Optimize C++ method basename validation with replacing a regex with
hand written code
These modifications reduce the time required to parse the symtab from
large applications by ~25% (tested with LLDB as inferior)
Differential revision: http://reviews.llvm.org/D14088
llvm-svn: 251402
* ArchSpec::MergeFrom() would erroneously promote an unspecified
unknown to a specified unknown when both the ArchSpec and the merged
in ArchSpec were both unspecified unknowns. This no longer happens,
which fixes issues with global module cache lookup in some
situations.
* Added ArchSpec::DumpTriple(Stream&) that now properly prints
unspecified unknowns as '*' and specified unknows as 'unknown'.
This makes it trivial to tell the difference between the two.
Converted printing code over ot using DumpTriple() rather than
building from scratch.
* Fixed up a couple places that were not guaranteeing that an
unspecified unknown was recorded as such.
llvm-svn: 250253
GP registers for o32 applications were always giving zero value because SetType() on the RegisterValue was causing the accessor functions to pickup the value from m_scalar of RegisterValue which is zero.
In this patch byte size and byte order of register value is set at the time of setting the value of the register.
llvm-svn: 249020
.ARM.exidx/.ARM.extab sections contain unwind information used on ARM
architecture from unwinding from an exception.
Differential revision: http://reviews.llvm.org/D13245
llvm-svn: 248903
The Go runtime schedules user level threads (goroutines) across real threads.
This adds an OS plugin to create memory threads for goroutines.
It supports the 1.4 and 1.5 go runtime.
Differential Revision: http://reviews.llvm.org/D5871
llvm-svn: 247852
SUMMARY:
This patch provides support for MIPS specific DT_MIPS_RLD_MAP_REL tag in LLDB.
This tag allows debugging of MIPS position independent executables and provides access to shared library information.
Reviewers: clayborg
Subscribers: mohit.bhakkad, sagar, jaydeep, lldb-commits
Differential Revision: http://reviews.llvm.org/D12794
llvm-svn: 247666
Change the mapping symbol handling to handle the case when the mapping
symbols are prefixed with an arbitrary prefix. This isn't strictly standard
compliance, but if all symbols in an object file is prefixed with objcopy
then the prefix will be added to the mapping symbol also. We still want to
treat these symbols as mapping symbols to get the correct address class data.
Differential revision: http://reviews.llvm.org/D12755
llvm-svn: 247400
* Create new dwo symbol file class
* Add handling for .dwo sections
* Change indexes in SymbolFileDWARF to store compile unit offset next to
DIE offset
* Propagate queries from dwarf compile unit to the dwo compile unit
where applicable
Differential revision: http://reviews.llvm.org/D12291
llvm-svn: 247132
These are 2 new value currently in experimental status used when split
debug info is enabled.
Differential revision: http://reviews.llvm.org/D12238
llvm-svn: 245931
The POSIX linker generally reports the load bias for the loaded
libraries but in some case it is useful to handle a library based on
absolute load address. Example usecases:
* Windows linker uses absolute addresses
* Library list came from different source (e.g. /proc/<pid>/maps)
Differential revision: http://reviews.llvm.org/D12233
llvm-svn: 245834
Ravitheja Addepally
Tamas Berghammer
Rafael Espindola
Mohit K. Bhakkad
Stephane Sezer
Ed Maste
Siva Chandra
Sagar Thakur
Greg Clayton
Todd Fiala
Jaydeep Patil
Ryan Brown
Bhushan D. Attarde