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| author | emaste <emaste@FreeBSD.org> | 2014-02-25 22:13:51 +0000 |
|---|---|---|
| committer | emaste <emaste@FreeBSD.org> | 2014-02-25 22:13:51 +0000 |
| commit | 6c70565c062addb40f7377f4097af94a515fc49d (patch) | |
| tree | a6ea5728c855ec09e8a9b53d967c87f620cb160c /contrib/llvm/tools/lldb/source/Plugins/Process/Utility/UnwindLLDB.cpp | |
| parent | 6c344e019fa72f3c5234bcdbd443a512c951ee02 (diff) | |
| download | FreeBSD-src-6c70565c062addb40f7377f4097af94a515fc49d.zip FreeBSD-src-6c70565c062addb40f7377f4097af94a515fc49d.tar.gz | |
Update LLDB snapshot to upstream r202189
Highlights include:
- Support hardware watchpoints on FreeBSD
(r201706)
- Improved unwinding through hand-written assembly functions
(r201839)
- Handle DW_TAG_unspecified_parameters for variadic functions
(r202061)
- Fix Ctrl+C interrupting a running inferior process
(r202086, r202154)
- Various bug fixes, including to the remote GDB protocol client
Sponsored by: DARPA, AFRL
Diffstat (limited to 'contrib/llvm/tools/lldb/source/Plugins/Process/Utility/UnwindLLDB.cpp')
| -rw-r--r-- | contrib/llvm/tools/lldb/source/Plugins/Process/Utility/UnwindLLDB.cpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/contrib/llvm/tools/lldb/source/Plugins/Process/Utility/UnwindLLDB.cpp b/contrib/llvm/tools/lldb/source/Plugins/Process/Utility/UnwindLLDB.cpp index a3a7002..5db08e5 100644 --- a/contrib/llvm/tools/lldb/source/Plugins/Process/Utility/UnwindLLDB.cpp +++ b/contrib/llvm/tools/lldb/source/Plugins/Process/Utility/UnwindLLDB.cpp @@ -158,6 +158,12 @@ UnwindLLDB::AddOneMoreFrame (ABI *abi) if (reg_ctx_sp.get() == NULL) { + // If the RegisterContextLLDB has a fallback UnwindPlan, it will switch to that and return + // true. Subsequent calls to TryFallbackUnwindPlan() will return false. + if (m_frames[cur_idx - 1]->reg_ctx_lldb_sp->TryFallbackUnwindPlan()) + { + return AddOneMoreFrame (abi); + } if (log) log->Printf ("%*sFrame %d did not get a RegisterContext, stopping.", cur_idx < 100 ? cur_idx : 100, "", cur_idx); @@ -166,6 +172,12 @@ UnwindLLDB::AddOneMoreFrame (ABI *abi) if (!reg_ctx_sp->IsValid()) { + // If the RegisterContextLLDB has a fallback UnwindPlan, it will switch to that and return + // true. Subsequent calls to TryFallbackUnwindPlan() will return false. + if (m_frames[cur_idx - 1]->reg_ctx_lldb_sp->TryFallbackUnwindPlan()) + { + return AddOneMoreFrame (abi); + } if (log) { log->Printf("%*sFrame %d invalid RegisterContext for this frame, stopping stack walk", @@ -175,6 +187,12 @@ UnwindLLDB::AddOneMoreFrame (ABI *abi) } if (!reg_ctx_sp->GetCFA (cursor_sp->cfa)) { + // If the RegisterContextLLDB has a fallback UnwindPlan, it will switch to that and return + // true. Subsequent calls to TryFallbackUnwindPlan() will return false. + if (m_frames[cur_idx - 1]->reg_ctx_lldb_sp->TryFallbackUnwindPlan()) + { + return AddOneMoreFrame (abi); + } if (log) { log->Printf("%*sFrame %d did not get CFA for this frame, stopping stack walk", @@ -189,6 +207,12 @@ UnwindLLDB::AddOneMoreFrame (ABI *abi) // these. if (reg_ctx_sp->IsTrapHandlerFrame() == false) { + // If the RegisterContextLLDB has a fallback UnwindPlan, it will switch to that and return + // true. Subsequent calls to TryFallbackUnwindPlan() will return false. + if (m_frames[cur_idx - 1]->reg_ctx_lldb_sp->TryFallbackUnwindPlan()) + { + return AddOneMoreFrame (abi); + } if (log) { log->Printf("%*sFrame %d did not get a valid CFA for this frame, stopping stack walk", @@ -199,6 +223,12 @@ UnwindLLDB::AddOneMoreFrame (ABI *abi) } if (!reg_ctx_sp->ReadPC (cursor_sp->start_pc)) { + // If the RegisterContextLLDB has a fallback UnwindPlan, it will switch to that and return + // true. Subsequent calls to TryFallbackUnwindPlan() will return false. + if (m_frames[cur_idx - 1]->reg_ctx_lldb_sp->TryFallbackUnwindPlan()) + { + return AddOneMoreFrame (abi); + } if (log) { log->Printf("%*sFrame %d did not get PC for this frame, stopping stack walk", @@ -208,6 +238,12 @@ UnwindLLDB::AddOneMoreFrame (ABI *abi) } if (abi && !abi->CodeAddressIsValid (cursor_sp->start_pc)) { + // If the RegisterContextLLDB has a fallback UnwindPlan, it will switch to that and return + // true. Subsequent calls to TryFallbackUnwindPlan() will return false. + if (m_frames[cur_idx - 1]->reg_ctx_lldb_sp->TryFallbackUnwindPlan()) + { + return AddOneMoreFrame (abi); + } if (log) { log->Printf("%*sFrame %d did not get a valid PC, stopping stack walk", |
