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| author | Joseph Tremoulet <jotrem@microsoft.com> | 2019-07-19 14:05:55 +0000 |
|---|---|---|
| committer | Joseph Tremoulet <jotrem@microsoft.com> | 2019-07-19 14:05:55 +0000 |
| commit | 3fd917d8860e9bdcabc14c536da4377307906be0 (patch) | |
| tree | 86fceb8a74eaf73a4f2e3c61943131b0dc296e0a /lldb/source/Symbol/CompactUnwindInfo.cpp | |
| parent | 9e6a42a1856468e1408c2e07717b71b9cfe1c86a (diff) | |
| download | bcm5719-llvm-3fd917d8860e9bdcabc14c536da4377307906be0.tar.gz bcm5719-llvm-3fd917d8860e9bdcabc14c536da4377307906be0.zip | |
Support Linux signal return trampolines in frame initialization
Summary:
Add __kernel_rt_sigreturn to the list of trap handlers for Linux (it's
used as such on aarch64 at least), and __restore_rt as well (used on
x86_64).
Skip decrement-and-recompute for trap handlers in
InitializeNonZerothFrame, as signal dispatch may point the child frame's
return address to the start of the return trampoline.
Parse the 'S' flag for signal handlers from eh_frame augmentation, and
propagate it to the unwind plan.
Reviewers: labath, jankratochvil, compnerd, jfb, jasonmolenda
Reviewed By: jasonmolenda
Subscribers: clayborg, MaskRay, wuzish, nemanjai, kbarton, jrtc27, atanasyan, jsji, javed.absar, kristof.beyls, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D63667
llvm-svn: 366580
Diffstat (limited to 'lldb/source/Symbol/CompactUnwindInfo.cpp')
| -rw-r--r-- | lldb/source/Symbol/CompactUnwindInfo.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lldb/source/Symbol/CompactUnwindInfo.cpp b/lldb/source/Symbol/CompactUnwindInfo.cpp index 3a2a4d3a09e..1a634f29736 100644 --- a/lldb/source/Symbol/CompactUnwindInfo.cpp +++ b/lldb/source/Symbol/CompactUnwindInfo.cpp @@ -737,6 +737,7 @@ bool CompactUnwindInfo::CreateUnwindPlan_x86_64(Target &target, unwind_plan.SetSourceName("compact unwind info"); unwind_plan.SetSourcedFromCompiler(eLazyBoolYes); unwind_plan.SetUnwindPlanValidAtAllInstructions(eLazyBoolNo); + unwind_plan.SetUnwindPlanForSignalTrap(eLazyBoolNo); unwind_plan.SetRegisterKind(eRegisterKindEHFrame); unwind_plan.SetLSDAAddress(function_info.lsda_address); @@ -1008,6 +1009,7 @@ bool CompactUnwindInfo::CreateUnwindPlan_i386(Target &target, unwind_plan.SetSourceName("compact unwind info"); unwind_plan.SetSourcedFromCompiler(eLazyBoolYes); unwind_plan.SetUnwindPlanValidAtAllInstructions(eLazyBoolNo); + unwind_plan.SetUnwindPlanForSignalTrap(eLazyBoolNo); unwind_plan.SetRegisterKind(eRegisterKindEHFrame); unwind_plan.SetLSDAAddress(function_info.lsda_address); @@ -1304,6 +1306,7 @@ bool CompactUnwindInfo::CreateUnwindPlan_arm64(Target &target, unwind_plan.SetSourceName("compact unwind info"); unwind_plan.SetSourcedFromCompiler(eLazyBoolYes); unwind_plan.SetUnwindPlanValidAtAllInstructions(eLazyBoolNo); + unwind_plan.SetUnwindPlanForSignalTrap(eLazyBoolNo); unwind_plan.SetRegisterKind(eRegisterKindEHFrame); unwind_plan.SetLSDAAddress(function_info.lsda_address); @@ -1437,6 +1440,7 @@ bool CompactUnwindInfo::CreateUnwindPlan_armv7(Target &target, unwind_plan.SetSourceName("compact unwind info"); unwind_plan.SetSourcedFromCompiler(eLazyBoolYes); unwind_plan.SetUnwindPlanValidAtAllInstructions(eLazyBoolNo); + unwind_plan.SetUnwindPlanForSignalTrap(eLazyBoolNo); unwind_plan.SetRegisterKind(eRegisterKindEHFrame); unwind_plan.SetLSDAAddress(function_info.lsda_address); |
