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lldb/
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include/lldb/Symbol/
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lldb/
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Symbol/
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SymbolContext.h
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source/
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Symbol/
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SymbolContext.cpp
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Target/
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Trace.cpp
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test/Shell/Commands/
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Shell/
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Commands/
1
command-image-lookup.yaml

Differential D98761

Fix "image lookup --address" Summary results for inline functions.
ClosedPublic

Authored by clayborg on Mar 16 2021, 10:14 PM.

Download Raw Diff

Details

Reviewers

labath
aprantl
JDevlieghere
jdoerfert
jingham
jasonmolenda

Commits

rG2d733923b8d3: Fix "image lookup --address" Summary results for inline functions.

Summary

Inline callstacks were being incorrectly displayed in the results of "image lookup --address". The deepest frame wasn't displaying the line table line entry, it was always showing the inline information's call file and line on the previous frame. This is now fixed and has tests to make sure it doesn't regress.

Diff Detail

Repository: rG LLVM Github Monorepo

Event Timeline

clayborg requested review of this revision.Mar 16 2021, 10:14 PM

clayborg created this revision.

Herald added a reviewer: jdoerfert. · View Herald TranscriptMar 16 2021, 10:14 PM

Herald added a project: Restricted Project. · View Herald Transcript

Herald added subscribers: lldb-commits, sstefan1. · View Herald Transcript

Harbormaster completed remote builds in B94168: Diff 331162.Mar 16 2021, 10:47 PM

clayborg added reviewers: jingham, jasonmolenda.Mar 17 2021, 11:38 AM

Remove extra parameter call to SymbolContext::DumpStopContext() recrusive call that was left over from iterating on my patch.

Harbormaster completed remote builds in B94348: Diff 331404.Mar 17 2021, 4:03 PM

If anyone wants to try this out, you can yaml2obj the yaml file and then do manual lookups. You can also debug any binary with inline function calls and stop anywhere and compare "bt" to the "image lookup --address $pc" to verify this works as expected.

I'm not that familiar with this function, but the output seems right. Given that the show_inline_callsite_line_info argument is no longer used, can you remove it?

lldb/source/Symbol/SymbolContext.cpp
132	I'm not sure if describing the old behavior of deleted code is that helpful. This may be better off in the commit message.
lldb/test/Shell/Commands/command-image-lookup.yaml
130	Could we delete pub, aranges, and apple_ sections?

Remove show_inline_callsite_line_info setting from SymbolContext dumping function as it isn't needed, show_inlined_frames controls this.

Harbormaster completed remote builds in B96404: Diff 334274.Mar 30 2021, 3:11 PM

labath accepted this revision.Apr 1 2021, 1:46 AM

This revision is now accepted and ready to land.Apr 1 2021, 1:46 AM

Anyone else have any issue with this patch?

In D98761#2664375, @clayborg wrote:

Anyone else have any issue with this patch?

sorry, I didn't see the accepted part!

This revision was landed with ongoing or failed builds.Apr 1 2021, 11:36 AM

Closed by commit rG2d733923b8d3: Fix "image lookup --address" Summary results for inline functions. (authored by clayborg). · Explain Why

This revision was automatically updated to reflect the committed changes.

clayborg added a commit: rG2d733923b8d3: Fix "image lookup --address" Summary results for inline functions..

Revision Contents

Path

Size

lldb/

include/

lldb/

Symbol/

SymbolContext.h

4 lines

source/

Symbol/

SymbolContext.cpp

18 lines

Target/

Trace.cpp

3 lines

test/

Shell/

Commands/

command-image-lookup.yaml

810 lines

Diff 334784

lldb/include/lldb/Symbol/SymbolContext.h

Show First 20 Lines • Show All 144 Lines • ▼ Show 20 Lines	public:
/// is dumped if this flag is \b true, otherwise the line info		/// is dumped if this flag is \b true, otherwise the line info
/// of the actual inlined function is dumped.		/// of the actual inlined function is dumped.
///		///
/// \return		/// \return
/// \b true if some text was dumped, \b false otherwise.		/// \b true if some text was dumped, \b false otherwise.
bool DumpStopContext(Stream s, ExecutionContextScope exe_scope,		bool DumpStopContext(Stream s, ExecutionContextScope exe_scope,
const Address &so_addr, bool show_fullpaths,		const Address &so_addr, bool show_fullpaths,
bool show_module, bool show_inlined_frames,		bool show_module, bool show_inlined_frames,
bool show_function_arguments, bool show_function_name,		bool show_function_arguments,
bool show_inline_callsite_line_info = true) const;		bool show_function_name) const;

/// Get the address range contained within a symbol context.		/// Get the address range contained within a symbol context.
///		///
/// Address range priority is as follows:		/// Address range priority is as follows:
/// - line_entry address range if line_entry is valid and		/// - line_entry address range if line_entry is valid and
/// eSymbolContextLineEntry is set in \a scope		/// eSymbolContextLineEntry is set in \a scope
/// - block address range if block is not nullptr and eSymbolContextBlock		/// - block address range if block is not nullptr and eSymbolContextBlock
/// is set in \a scope		/// is set in \a scope
▲ Show 20 Lines • Show All 324 Lines • Show Last 20 Lines

lldb/source/Symbol/SymbolContext.cpp

Show First 20 Lines • Show All 65 Lines • ▼ Show 20 Lines	void SymbolContext::Clear(bool clear_target) {
symbol = nullptr;		symbol = nullptr;
variable = nullptr;		variable = nullptr;
}		}

bool SymbolContext::DumpStopContext(Stream s, ExecutionContextScope exe_scope,		bool SymbolContext::DumpStopContext(Stream s, ExecutionContextScope exe_scope,
const Address &addr, bool show_fullpaths,		const Address &addr, bool show_fullpaths,
bool show_module, bool show_inlined_frames,		bool show_module, bool show_inlined_frames,
bool show_function_arguments,		bool show_function_arguments,
bool show_function_name,		bool show_function_name) const {
bool show_inline_callsite_line_info) const {
bool dumped_something = false;		bool dumped_something = false;
if (show_module && module_sp) {		if (show_module && module_sp) {
if (show_fullpaths)		if (show_fullpaths)
*s << module_sp->GetFileSpec();		*s << module_sp->GetFileSpec();
else		else
*s << module_sp->GetFileSpec().GetFilename();		*s << module_sp->GetFileSpec().GetFilename();
s->PutChar('`');		s->PutChar('`');
dumped_something = true;		dumped_something = true;
Show All 39 Lines	if (GetParentOfInlinedScope(addr, inline_parent_sc, inline_parent_addr)) {
lldb_private::AddressRange block_range;		lldb_private::AddressRange block_range;
if (inlined_block->GetRangeContainingAddress(addr, block_range)) {		if (inlined_block->GetRangeContainingAddress(addr, block_range)) {
const addr_t inlined_function_offset =		const addr_t inlined_function_offset =
addr.GetOffset() - block_range.GetBaseAddress().GetOffset();		addr.GetOffset() - block_range.GetBaseAddress().GetOffset();
if (inlined_function_offset) {		if (inlined_function_offset) {
s->Printf(" + %" PRIu64, inlined_function_offset);		s->Printf(" + %" PRIu64, inlined_function_offset);
}		}
}		}
if (show_inline_callsite_line_info) {		// "line_entry" will always be valid as GetParentOfInlinedScope(...) will
const Declaration &call_site = inlined_block_info->GetCallSite();		// fill it in correctly with the calling file and line. Previous code
if (call_site.IsValid()) {		// was extracting the calling file and line from inlined_block_info and
		labathUnsubmitted Not Done Reply Inline Actions I'm not sure if describing the old behavior of deleted code is that helpful. This may be better off in the commit message. labath: I'm not sure if describing the old behavior of deleted code is that helpful. This may be better…
s->PutCString(" at ");		// using it right away which is not correct. On the first call to this
call_site.DumpStopContext(s, show_fullpaths);		// function "line_entry" will contain the actual line table entry. On
}		// susequent calls "line_entry" will contain the calling file and line
} else if (line_entry.IsValid()) {		// from the previous inline info.
		if (line_entry.IsValid()) {
s->PutCString(" at ");		s->PutCString(" at ");
line_entry.DumpStopContext(s, show_fullpaths);		line_entry.DumpStopContext(s, show_fullpaths);
}		}

if (show_inlined_frames) {		if (show_inlined_frames) {
s->EOL();		s->EOL();
s->Indent();		s->Indent();
const bool show_function_name = true;		const bool show_function_name = true;
▲ Show 20 Lines • Show All 1,179 Lines • Show Last 20 Lines

lldb/source/Target/Trace.cpp

Show First 20 Lines • Show All 135 Lines • ▼ Show 20 Lines	if (!sc.module_sp)
s.Printf("(none)");		s.Printf("(none)");
else if (!sc.function && !sc.symbol)		else if (!sc.function && !sc.symbol)
s.Printf("%s`(none)",		s.Printf("%s`(none)",
sc.module_sp->GetFileSpec().GetFilename().AsCString());		sc.module_sp->GetFileSpec().GetFilename().AsCString());
else		else
sc.DumpStopContext(&s, &target, address, /show_fullpath/ false,		sc.DumpStopContext(&s, &target, address, /show_fullpath/ false,
/show_module/ true, /show_inlined_frames/ false,		/show_module/ true, /show_inlined_frames/ false,
/show_function_arguments/ true,		/show_function_arguments/ true,
/show_function_name/ true,		/show_function_name/ true);
/show_inline_callsite_line_info/ false);
s.Printf("\n");		s.Printf("\n");
return sc;		return sc;
}		}

/// Dump an instruction given by its address using a given disassembler, unless		/// Dump an instruction given by its address using a given disassembler, unless
/// the instruction is not present in the disassembler.		/// the instruction is not present in the disassembler.
///		///
/// \param[in] disassembler		/// \param[in] disassembler
▲ Show 20 Lines • Show All 255 Lines • Show Last 20 Lines

lldb/test/Shell/Commands/command-image-lookup.yaml

This file was added.

				# RUN: yaml2obj %s -o %T/a.out
				# RUN: %lldb %T/a.out -o "image lookup --verbose --address 0x0000000100003fa1" -o exit \| FileCheck %s --check-prefix=NOINLINE
				# RUN: %lldb %T/a.out -o "image lookup --verbose --address 0x0000000100003fa2" -o exit \| FileCheck %s --check-prefix=INLINE_1
				# RUN: %lldb %T/a.out -o "image lookup --verbose --address 0x0000000100003fa8" -o exit \| FileCheck %s --check-prefix=INLINE_2

				# NOINLINE: Summary: a.out`main + 33 at main.cpp:10
				# NOINLINE-NEXT: Module: file =

				# INLINE_1: Summary: a.out`main + 34 [inlined] squares(int, int) at main.cpp:7:16
				# INLINE_1-NEXT: a.out`main + 34 at main.cpp:11
				# INLINE_1-NEXT: Module: file =

				# INLINE_2: Summary: a.out`main + 40 [inlined] square(int) at main.cpp:3:9
				# INLINE_2-NEXT: a.out`main + 40 [inlined] squares(int, int) + 6 at main.cpp:7
				# INLINE_2-NEXT: a.out`main + 34 at main.cpp:11
				# INLINE_2-NEXT: Module: file =


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				labathUnsubmitted Not Done Reply Inline Actions Could we delete pub, aranges, and apple_ sections? labath: Could we delete pub*, aranges, and apple_* sections?
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