This revision was automatically updated to reflect the committed changes.
Closed by commit rLLDB361618: [FuncUnwinders] Use "symbol file"
unwind plans for unwinding (authored by labath, committed by ).
Herald added a project: LLDB.
Changed prior to commit:
https://reviews.llvm.org/D61853?vs=200737&id=201169#toc
Repository:
rLLDB LLDB
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D61853/new/
https://reviews.llvm.org/D61853
Files:
include/lldb/Symbol/FuncUnwinders.h
lit/SymbolFile/Breakpad/Inputs/unwind-via-stack-cfi.syms
lit/SymbolFile/Breakpad/Inputs/unwind-via-stack-cfi.yaml
lit/SymbolFile/Breakpad/stack-cfi-parsing.test
lit/SymbolFile/Breakpad/unwind-via-stack-cfi.test
source/Commands/CommandObjectTarget.cpp
source/Plugins/Process/Utility/RegisterContextLLDB.cpp
source/Symbol/FuncUnwinders.cpp
Index: include/lldb/Symbol/FuncUnwinders.h
===================================================================
--- include/lldb/Symbol/FuncUnwinders.h
+++ include/lldb/Symbol/FuncUnwinders.h
@@ -35,7 +35,7 @@
~FuncUnwinders();
- lldb::UnwindPlanSP GetUnwindPlanAtCallSite(Target &target);
+ lldb::UnwindPlanSP GetUnwindPlanAtCallSite(Target &target, Thread &thread);
lldb::UnwindPlanSP GetUnwindPlanAtNonCallSite(Target &target,
lldb_private::Thread &thread);
Index: source/Plugins/Process/Utility/RegisterContextLLDB.cpp
===================================================================
--- source/Plugins/Process/Utility/RegisterContextLLDB.cpp
+++ source/Plugins/Process/Utility/RegisterContextLLDB.cpp
@@ -244,8 +244,8 @@
}
if (func_unwinders_sp.get() != nullptr)
- call_site_unwind_plan =
- func_unwinders_sp->GetUnwindPlanAtCallSite(process->GetTarget());
+ call_site_unwind_plan = func_unwinders_sp->GetUnwindPlanAtCallSite(
+ process->GetTarget(), m_thread);
if (call_site_unwind_plan.get() != nullptr) {
m_fallback_unwind_plan_sp = call_site_unwind_plan;
@@ -873,7 +873,8 @@
// location what helps in the most common cases when the instruction
// emulation fails.
UnwindPlanSP call_site_unwind_plan =
- func_unwinders_sp->GetUnwindPlanAtCallSite(process->GetTarget());
+ func_unwinders_sp->GetUnwindPlanAtCallSite(process->GetTarget(),
+ m_thread);
if (call_site_unwind_plan &&
call_site_unwind_plan.get() != unwind_plan_sp.get() &&
call_site_unwind_plan->GetSourceName() !=
@@ -909,8 +910,8 @@
// Typically this is unwind info from an eh_frame section intended for
// exception handling; only valid at call sites
if (process) {
- unwind_plan_sp =
- func_unwinders_sp->GetUnwindPlanAtCallSite(process->GetTarget());
+ unwind_plan_sp = func_unwinders_sp->GetUnwindPlanAtCallSite(
+ process->GetTarget(), m_thread);
}
int valid_offset = -1;
if (IsUnwindPlanValidForCurrentPC(unwind_plan_sp, valid_offset)) {
@@ -940,7 +941,8 @@
// code it is often written in a way that it valid at all location what
// helps in the most common cases when the instruction emulation fails.
UnwindPlanSP call_site_unwind_plan =
- func_unwinders_sp->GetUnwindPlanAtCallSite(process->GetTarget());
+ func_unwinders_sp->GetUnwindPlanAtCallSite(process->GetTarget(),
+ m_thread);
if (call_site_unwind_plan &&
call_site_unwind_plan.get() != unwind_plan_sp.get() &&
call_site_unwind_plan->GetSourceName() !=
Index: source/Commands/CommandObjectTarget.cpp
===================================================================
--- source/Commands/CommandObjectTarget.cpp
+++ source/Commands/CommandObjectTarget.cpp
@@ -3521,7 +3521,7 @@
non_callsite_unwind_plan->GetSourceName().AsCString());
}
UnwindPlanSP callsite_unwind_plan =
- func_unwinders_sp->GetUnwindPlanAtCallSite(*target);
+ func_unwinders_sp->GetUnwindPlanAtCallSite(*target, *thread);
if (callsite_unwind_plan) {
result.GetOutputStream().Printf(
"Synchronous (restricted to call-sites) UnwindPlan is '%s'\n",
Index: source/Symbol/FuncUnwinders.cpp
===================================================================
--- source/Symbol/FuncUnwinders.cpp
+++ source/Symbol/FuncUnwinders.cpp
@@ -54,9 +54,12 @@
FuncUnwinders::~FuncUnwinders() {}
-UnwindPlanSP FuncUnwinders::GetUnwindPlanAtCallSite(Target &target) {
+UnwindPlanSP FuncUnwinders::GetUnwindPlanAtCallSite(Target &target,
+ Thread &thread) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
+ if (UnwindPlanSP plan_sp = GetSymbolFileUnwindPlan(thread))
+ return plan_sp;
if (UnwindPlanSP plan_sp = GetEHFrameUnwindPlan(target))
return plan_sp;
if (UnwindPlanSP plan_sp = GetDebugFrameUnwindPlan(target))
@@ -357,6 +360,8 @@
return eh_frame_sp;
}
+ if (UnwindPlanSP plan_sp = GetSymbolFileUnwindPlan(thread))
+ return plan_sp;
if (UnwindPlanSP plan_sp = GetEHFrameAugmentedUnwindPlan(target, thread))
return plan_sp;
if (UnwindPlanSP plan_sp = GetDebugFrameAugmentedUnwindPlan(target, thread))
Index: lit/SymbolFile/Breakpad/stack-cfi-parsing.test
===================================================================
--- lit/SymbolFile/Breakpad/stack-cfi-parsing.test
+++ lit/SymbolFile/Breakpad/stack-cfi-parsing.test
@@ -4,6 +4,8 @@
image show-unwind -n func0
# CHECK-LABEL: image show-unwind -n func0
+# CHECK: Asynchronous (not restricted to call-sites) UnwindPlan is 'breakpad STACK CFI'
+# CHECK: Synchronous (restricted to call-sites) UnwindPlan is 'breakpad STACK CFI'
# CHECK: Symbol file UnwindPlan:
# CHECK-NEXT: This UnwindPlan originally sourced from breakpad STACK CFI
# CHECK-NEXT: This UnwindPlan is sourced from the compiler: yes.
@@ -42,6 +44,8 @@
# Finally, try an unwind plan with just a single row
image show-unwind -n func9
# CHECK-LABEL: image show-unwind -n func9
+# CHECK: Asynchronous (not restricted to call-sites) UnwindPlan is 'breakpad STACK CFI'
+# CHECK: Synchronous (restricted to call-sites) UnwindPlan is 'breakpad STACK CFI'
# CHECK: Symbol file UnwindPlan:
# CHECK: Address range of this UnwindPlan: [stack-cfi-parsing.out..module_image + 9-0x000000000000000a)
# CHECK: row[0]: 0: CFA=DW_OP_breg6 +0 => rip=DW_OP_breg0 +0
Index: lit/SymbolFile/Breakpad/Inputs/unwind-via-stack-cfi.syms
===================================================================
--- lit/SymbolFile/Breakpad/Inputs/unwind-via-stack-cfi.syms
+++ lit/SymbolFile/Breakpad/Inputs/unwind-via-stack-cfi.syms
@@ -0,0 +1,6 @@
+MODULE Linux x86_64 603FCF6CA7FF4BCC86AE8FF44DB2576A0 linux-x86_64_not_crashed
+INFO CODE_ID 6CCF3F60FFA7CC4B86AE8FF44DB2576A68983611
+PUBLIC 420 0 bar
+PUBLIC 450 0 foo
+PUBLIC 480 0 _start
+STACK CFI INIT 420 29 .cfa: $rbp ^ .ra: .cfa 8 + ^ $rsp: .cfa 16 + $rbp: .cfa ^
Index: lit/SymbolFile/Breakpad/Inputs/unwind-via-stack-cfi.yaml
===================================================================
--- lit/SymbolFile/Breakpad/Inputs/unwind-via-stack-cfi.yaml
+++ lit/SymbolFile/Breakpad/Inputs/unwind-via-stack-cfi.yaml
@@ -0,0 +1,43 @@
+--- !minidump
+Streams:
+ - Type: ThreadList
+ Threads:
+ - Thread Id: 0x000074F3
+ Context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
+ Stack:
+ Start of Memory Range: 0x00007FFD4BC15080
+ Content: 30044000000000000000000000000000FFFFFFFF03000000B850C14BFD7F0000670440000000000000000000000000000000000001000000D850C14BFD7F0000970440000000000000000000000000000000000000000000000000000000000001000000000000009F67C14BFD7F00000000000000000000BA67C14BFD7F0000
+ - Type: ModuleList
+ Modules:
+ - Base of Image: 0x0000000000400000
+ Size of Image: 0x00001000
+ Module Name: '/tmp/unwind-via-stack-cfi'
+ CodeView Record: 4C4570426CCF3F60FFA7CC4B86AE8FF44DB2576A68983611
+ - Type: MemoryList
+ Memory Ranges:
+ - Start of Memory Range: 0x00007FFD4BC15080
+ Content: 30044000000000000000000000000000FFFFFFFF03000000B850C14BFD7F0000670440000000000000000000000000000000000001000000D850C14BFD7F0000970440000000000000000000000000000000000000000000000000000000000001000000000000009F67C14BFD7F00000000000000000000BA67C14BFD7F0000
+ - Type: SystemInfo
+ Processor Arch: AMD64
+ Processor Level: 6
+ Processor Revision: 15876
+ Number of Processors: 40
+ Platform ID: Linux
+ CSD Version: 'Linux 3.13.0-91-generic'
+ CPU:
+ Vendor ID: GenuineIntel
+ Version Info: 0x00000000
+ Feature Info: 0x00000000
+ - Type: LinuxProcStatus
+ Text: |
+ Name: unwind-via-stack-cfi
+ State: t (tracing stop)
+ Tgid: 29939
+ Ngid: 0
+ Pid: 29939
+ PPid: 29370
+ TracerPid: 29940
+ Uid: 1001 1001 1001 1001
+ Gid: 1001 1001 1001 1001
+
+...
Index: lit/SymbolFile/Breakpad/unwind-via-stack-cfi.test
===================================================================
--- lit/SymbolFile/Breakpad/unwind-via-stack-cfi.test
+++ lit/SymbolFile/Breakpad/unwind-via-stack-cfi.test
@@ -0,0 +1,20 @@
+# RUN: yaml2obj %S/Inputs/unwind-via-stack-cfi.yaml > %t
+# RUN: %lldb -c %t -o "target symbols add %S/Inputs/unwind-via-stack-cfi.syms" \
+# RUN: -s %s -b | FileCheck %s
+
+image show-unwind -n bar
+# CHECK-LABEL: image show-unwind -n bar
+# CHECK: Asynchronous (not restricted to call-sites) UnwindPlan is 'breakpad STACK CFI'
+# CHECK: Synchronous (restricted to call-sites) UnwindPlan is 'breakpad STACK CFI'
+# CHECK: Symbol file UnwindPlan:
+# CHECK-NEXT: This UnwindPlan originally sourced from breakpad STACK CFI
+# CHECK-NEXT: This UnwindPlan is sourced from the compiler: yes.
+# CHECK-NEXT: This UnwindPlan is valid at all instruction locations: no.
+# CHECK-NEXT: Address range of this UnwindPlan: [unwind-via-stack-cfi..module_image + 1056-0x0000000000000449)
+# CHECK-NEXT: row[0]: 0: CFA=DW_OP_breg6 +0, DW_OP_deref => rbp=DW_OP_pick 0x00, DW_OP_deref rsp=DW_OP_pick 0x00, DW_OP_consts +16, DW_OP_plus rip=DW_OP_pick 0x00, DW_OP_consts +8, DW_OP_plus , DW_OP_deref
+
+thread backtrace
+# CHECK-LABEL: thread backtrace
+# CHECK: frame #0: 0x0000000000400430 unwind-via-stack-cfi`bar + 16
+# CHECK: frame #1: 0x0000000000400497 unwind-via-stack-cfi`_start + 23
+# CHECK-NOT: frame
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