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* Fix for Bug 25338Ravitheja Addepally2016-01-192-14/+63
| | | | | | | | | | | | | | | | 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
* Unconditionally accept symbol sizes from elfTamas Berghammer2016-01-191-2/+10
| | | | | | | | | | | | | | | | | | | 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
* Update for llvm change. NFC.Rafael Espindola2016-01-182-5/+5
| | | | llvm-svn: 258080
* Revert "Unconditionally accept symbol sizes from elf"Tamas Berghammer2016-01-181-4/+2
| | | | | | | | It causes issues for i386 when compiling with gcc-4.9.2 This reverts commit e248214a3eab8e244095f97d1996c991cb988cc4. llvm-svn: 258043
* Unconditionally accept symbol sizes from elfTamas Berghammer2016-01-181-2/+4
| | | | | | | | | | | | | | | | | 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
* [LLDB][MIPS] Fix rL255619: mips 3, 4 and 5 are 64 bit archsMohit K. Bhakkad2016-01-121-3/+3
| | | | llvm-svn: 257448
* Get rid of ARM_ELF_SYM_IS_THUMB flag.Stephane Sezer2016-01-121-4/+0
| | | | | | | | | | | | | | 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
* Strip trailing whitespaceEd Maste2016-01-041-48/+48
| | | | | | | | (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
* Read macro info from .debug_macro section and use it for expression evaluation.Siva Chandra2015-12-161-0/+4
| | | | | | | | | | | | | | | | | 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
* [LLDB][MIPS] Added support for MIPS1, MIPS2, MIPS3, MIPS4 and MIPS5 ↵Sagar Thakur2015-12-151-0/+5
| | | | | | | | | | | | | instruction sets Patch by Nitesh Jain. Summary: This Patch will allowed LLDB to debug respective instruction sets binaries. Reviewers: jaydeep, clayborg Subscribers: lldb-commits, mohit.bhakkad, sagar, bhushan Differential: http://reviews.llvm.org/D15487 llvm-svn: 255619
* Make core files not crash when you load a core file into LLDB with just ↵Greg Clayton2015-10-282-22/+106
| | | | | | | | | | | | | | | "lldb -c core". 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
* Some minor improvements on the symtab parsing codeTamas Berghammer2015-10-271-7/+16
| | | | | | | | | | | | | | | * 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
* Fix Clang-tidy modernize-use-override warnings in ↵Eugene Zelenko2015-10-231-4/+9
| | | | | | source/Plugins/ObjectContainer and ObjectFile; other minor fixes. llvm-svn: 251119
* ArchSpec: fix unintentional promotion of unspecified unknowns to specified ↵Todd Fiala2015-10-131-0/+6
| | | | | | | | | | | | | | | | | | | | | unknowns * 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
* Romove accidentially added statement in r249020Sagar Thakur2015-10-011-2/+0
| | | | llvm-svn: 249021
* [LLDB][MIPS] Fix gp register value for o32 applications on 64-bit targetSagar Thakur2015-10-011-0/+2
| | | | | | | 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
* Add support for .ARM.exidx unwind informationTamas Berghammer2015-09-301-0/+4
| | | | | | | | | .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
* [LLDB][MIPS] microMIPS breakpoints, disassembly and compressed addressesJaydeep Patil2015-09-221-0/+35
| | | | | | | | | | | | SUMMARY: This patch detects microMIPS symbols, sets breakpoints using un-compressed address and display disassembly in mixed mode for microMIPS applications (running on bare-iron targets). Reviewers: clayborg Subscribers: nitesh.jain, mohit.bhakkad, sagar, bhushan and lldb-commits Differential Revision: http://reviews.llvm.org/D12079 llvm-svn: 248248
* Add an OperatingSystem plugin to support goroutinesRyan Brown2015-09-161-0/+2
| | | | | | | | | | 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
* [LLDB][MIPS] Add support for DT_MIPS_RLD_MAP_RELBhushan D. Attarde2015-09-151-4/+23
| | | | | | | | | | | | 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
* Fix a small typo in ObjectFileELF.cpp.Stephane Sezer2015-09-111-1/+1
| | | | llvm-svn: 247452
* Improve the arm/aarch64 mapping symbol handlingTamas Berghammer2015-09-111-36/+51
| | | | | | | | | | | | 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
* [LLDB][MIPS] Added support for the debugging of N32/O32 applications on ↵Mohit K. Bhakkad2015-09-091-10/+20
| | | | | | | | | | | | MIPS64 target. Patch by Nitesh Jain Reviewers: clayborg, ovyalov. Subscribers: jaydeep, bhushan, mohit.bhakkad, sagar, nitesh.jain, lldb-commits. Differential Revision: http://reviews.llvm.org/D12671 llvm-svn: 247134
* Add basic fission support to SymbolFileDWARFTamas Berghammer2015-09-091-14/+26
| | | | | | | | | | | | | * 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
* [cmake] Remove LLVM_NO_RTTI.Bruce Mitchener2015-09-031-2/+0
| | | | | | | | | | | | | | Summary: This doesn't exist in other LLVM projects any longer and doesn't do anything. Reviewers: chaoren, labath Subscribers: emaste, tberghammer, lldb-commits, danalbert Differential Revision: http://reviews.llvm.org/D12586 llvm-svn: 246749
* Add support for DW_FORM_GNU_[addr,str]_indexTamas Berghammer2015-08-251-15/+21
| | | | | | | | | 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
* Add absolute load address support for the DynamicLoader pluginsTamas Berghammer2015-08-241-26/+38
| | | | | | | | | | | | 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
* Fix issues with separate symbolfile handlingTamas Berghammer2015-07-301-12/+29
| | | | | | Differential revision: http://reviews.llvm.org/D11595 llvm-svn: 243637
* Fix typos.Bruce Mitchener2015-07-221-5/+5
| | | | | | | | | | | | Summary: Fix a bunch of typos. Reviewers: clayborg Subscribers: lldb-commits Differential Revision: http://reviews.llvm.org/D11386 llvm-svn: 242856
* [LLDB][MIPS] Detect MIPS application specific extensions like micromipsJaydeep Patil2015-07-161-0/+35
| | | | | | | | | | | | | | SUMMARY: The patch detects MIPS application specific extensions (ASE) like micromips by reading ELF header.e_flags and SHT_MIPS_ABIFLAGS section. MIPS triple does not contain ASE information like micromips, mips16, DSP, MSA etc. These can be read from header.e_flags or SHT_MIPS_ABIFLAGS section. Reviewers: clayborg Subscribers: mohit.bhakkad, sagar, lldb-commits Differential Revision: http://reviews.llvm.org/D11133 llvm-svn: 242381
* Skip oatdata and oatexec symbols in system@framework@boot.oatTamas Berghammer2015-07-131-2/+14
| | | | | | | | | | | | | | On Android the oatdata and the oatexec symbols in system@framework@boot.oat covers the full .text section what causes issues with displaying unusable symbol name to the user and very slow unwinding speed because the instruction emulation based unwind plans try to emulate all instructions in these symbols. Don't add these symbols to the symbol list as they have no use for the debugger and they are causing a lot of trouble. Differential revision: http://reviews.llvm.org/D11065 llvm-svn: 242017
* Make many mangled functions that might demangle a name be allowed to specify ↵Greg Clayton2015-07-081-2/+3
| | | | | | a language to use in order to soon support Pascal and Java demangling. Dawn Perchik will take care of making this so. llvm-svn: 241751
* Use string::find(char) for single character strings.Bruce Mitchener2015-07-041-1/+1
| | | | | | | | | | | | Summary: Use string::find(char) for single character strings. Reviewers: abidh, ki.stfu, clayborg Subscribers: lldb-commits Differential Revision: http://reviews.llvm.org/D10943 llvm-svn: 241390
* Fix [vdso] handling on Android (x86 and aarch64)Tamas Berghammer2015-06-302-5/+33
| | | | | | | | | | | | | | * Add in-memory object file handling to the core dynamic loader * Fix in memory object file handling in ObjectFileELF (previously only part of the file was loaded before parsing) * Fix load address setting in ObjectFileELF for 32-bit targets when the load bias is negative * Change hack in DYLDRendezvous.cpp to be more specific and not to interfere with object files with fixed load address Differential revision: http://reviews.llvm.org/D10800 llvm-svn: 241057
* Resubmitting 240466 after fixing the linux test suite failures.Greg Clayton2015-06-251-2/+2
| | | | | | | | | | | | | | | A few extras were fixed - Symbol::GetAddress() now returns an Address object, not a reference. There were places where people were accessing the address of a symbol when the symbol's value wasn't an address symbol. On MacOSX, undefined symbols have a value zero and some places where using the symbol's address and getting an absolute address of zero (since an Address object with no section and an m_offset whose value isn't LLDB_INVALID_ADDRESS is considered an absolute address). So fixing this required some changes to make sure people were getting what they expected. - Since some places want to access the address as a reference, I added a few new functions to symbol: Address &Symbol::GetAddressRef(); const Address &Symbol::GetAddressRef() const; Linux test suite passes just fine now. <rdar://problem/21494354> llvm-svn: 240702
* Fix location of symbol size calculation in ObjectFileELFTamas Berghammer2015-06-241-1/+1
| | | | | | Bug introduced by r240533 llvm-svn: 240537
* Improve instruction emulation based stack unwinding on ARMTamas Berghammer2015-06-241-3/+4
| | | | | | | | | | | | | | | | | | | | | | | * Add and fix the emulation of several instruction. * Disable frame pointer usage on Android. * Specify return address register for the unwind plan instead of explict tracking the value of RA. * Replace prologue detection heuristics (unreliable in several cases) with a logic to follow the branch instructions and restore the CFI value based on them. The target address for a branch should have the same CFI as the source address (if they are in the same function). * Handle symbols in ELF files where the symbol size is not specified with calcualting their size based on the next symbol (already done in MachO files). * Fix architecture in FuncUnwinders with filling up the inforamtion missing from the object file with the architecture of the target. * Add code to read register wehn the value is set to "IsSame" as it meanse the value of a register in the parent frame is the same as the value in the current frame. Differential revision: http://reviews.llvm.org/D10447 llvm-svn: 240533
* Fix build breakage after llvm r240426Pavel Labath2015-06-231-2/+1
| | | | | | | | | | | | Test Plan: It builds, tests pass. Reviewers: tstellarAMD, rafael Subscribers: lldb-commits Differential Revision: http://reviews.llvm.org/D10660 llvm-svn: 240429
* Fix the lldb build for the EM_486 change.Rafael Espindola2015-06-191-1/+1
| | | | llvm-svn: 240138
* Improve OSType initialization in elf object file's arch_specEd Maste2015-06-051-9/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Setting the OSType in the ArchSpec triple is needed to correctly setup up the register context plugin. ArchSpec::SetArchitecture, for Mach-O only, sets the OSType. For ELF it was left to the ObjectFileELF to fill in the missing OSType. This change moves the ObjectFileELF logic into ArchSpec. A new optional 'os' parameter has been added to SetArchitecture. For ELF, this value is the from the ELF header.e_ident[EI_OSABI]. The default value is 0 or ELFOSABI_NONE. The real work of determining the OSType was done by the ObjectFileELF helper function GetOsFromOSABI. This logic has been moved SetArchitecture. GetOsFromOSABI has been commented as being deprectated. It is left in to support asserts. For ELF the vendor value returned from SetArchitecture should be UnknownVendor. An unneeded resetting in ObjectFileELF has been removed and replaced with an assert. This fixes a problem reading a core file on FreeBSD/ARM because the spec triple was arm-unknown-unknown. Patch by Tom Rix. Differential Revision: http://reviews.llvm.org/D9292 llvm-svn: 239148
* Fix THUMB function detection when function name is not prefixed.Aidan Dodds2015-05-281-11/+18
| | | | | | Differential Revision: http://reviews.llvm.org/D10062 llvm-svn: 238433
* Fix parsing of the plt section for android-armTamas Berghammer2015-05-081-6/+52
| | | | | | | | | | | | | | | | The ELF data contains two different errors in some ELF files on android. * The link field of the symbol table don't point to the plt section or to the dynsym section even when it is present in the ELF files. * The size of the plt entries aren't specified in the section header of the plt section. This CL adds some workarounds for these two issue with finding the sections by name if the link field is empty and by using a heuristic to calculate the size and offset of the plt entries. Differential revision: http://reviews.llvm.org/D9560 llvm-svn: 236818
* [LLDB][MIPS] Add MIPS32 and MIPS64 core revisionsMohit K. Bhakkad2015-04-231-7/+12
| | | | | | | | | | | | | | | Patch by Jaydeep Patil Added MIPS32 and MIPS64 core revisions. This would be followed by register context and emulate-instruction for MIPS32. DYLDRendezvous.cpp: On Linux link map struct does not contain extra load offset field. Reviewers: clayborg Subscribers: bhushan, mohit.bhakkad, sagar, lldb-commits. Differential Revision: http://reviews.llvm.org/D9190 llvm-svn: 235574
* Remove usages of host architecture within ELF object file for unknown parts ↵Oleksiy Vyalov2015-04-181-32/+0
| | | | | | | | of ArchSpec. http://reviews.llvm.org/D9078 llvm-svn: 235255
* Fix mapping symbol handling on arm 32/64Tamas Berghammer2015-04-171-25/+31
| | | | | | | | | | | | The debug info section contains some $d mapping symbol what is overlapping with code sections in other sections of the object file causing problem in the address class detection. This CL ignores these symboles from the address class map as the debug info sections don't use this map. Differential revision: http://reviews.llvm.org/D9050 llvm-svn: 235171
* Fix thumb symbol value fixup in ObjectFileELFTamas Berghammer2015-04-161-1/+1
| | | | llvm-svn: 235098
* Ignore mapping symbols on aarch64Tamas Berghammer2015-04-072-50/+82
| | | | | | | | | | | ELF symbol tables on aarch64 may contains some mapping symbols. They provide information about the underlying data but interfere with symbol look-up of lldb. They are already ignored on arm32. With this CL they will be ignored on aarch64 also. Differential revision: http://reviews.llvm.org/D8776 llvm-svn: 234307
* Parse .note.android.ident header from elf filesTamas Berghammer2015-03-181-1/+15
| | | | | | | | | | | In android a .note.android.ident section header is added to the elf files to provide information for the debuggers that it is an android specific module. This CL add logic to parse it out from the elf files and set the module specification based on it. Differential revision: http://reviews.llvm.org/D8377 llvm-svn: 232625
* [MIPS] - Register Context for MIPS64Mohit K. Bhakkad2015-03-171-0/+26
| | | | | | | | | | | | | | | | Patch by Jaydeep Patil Summery: 1. Add MIPS variants by parsing e_flags of the ELF 2. Create RegisterInfoInterface and RegisterContext for MIPS64 and MIPS64EL Reviewers: clayborg Subscribers: tberghammer, bhushan, mohit.bhakkad, sagar Differential Revision: http://reviews.llvm.org/D8166 llvm-svn: 232467
* Remove "virtual" and add "override" to all functions that are overridden to ↵Greg Clayton2015-03-121-42/+42
| | | | | | quiet warnings. llvm-svn: 231990
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