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Differential D98761

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

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

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

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
clayborg updated this revision to Diff 331404.Mar 17 2021, 4:02 PM

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
clayborg added a comment.EditedMar 17 2021, 4:06 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.

labath added a comment.Mar 30 2021, 5:31 AM

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
133

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?

clayborg updated this revision to Diff 334274.Mar 30 2021, 2:43 PM

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
clayborg added a comment.Apr 1 2021, 9:41 AM

Anyone else have any issue with this patch?

clayborg added a comment.Apr 1 2021, 10:06 AM
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

PathSize
lldb/
source/
Symbol/
18 lines
test/
Shell/
Commands/
810 lines

Diff 331162

lldb/source/Symbol/SymbolContext.cpp

//===-- SymbolContext.cpp -------------------------------------------------===// //===-- SymbolContext.cpp -------------------------------------------------===//
// //
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information. // See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#include "lldb/Symbol/SymbolContext.h" #include "lldb/Symbol/SymbolContext.h"
Lint: Pre-merge checks
Inline Actions

clang-tidy: error: 'lldb/Symbol/SymbolContext.h' file not found [clang-diagnostic-error]
not useful

Lint: Pre-merge checks: clang-tidy: error: 'lldb/Symbol/SymbolContext.h' file not found [clang-diagnostic-error]…
#include "lldb/Core/Module.h" #include "lldb/Core/Module.h"
#include "lldb/Core/ModuleSpec.h" #include "lldb/Core/ModuleSpec.h"
#include "lldb/Host/Host.h" #include "lldb/Host/Host.h"
#include "lldb/Host/StringConvert.h" #include "lldb/Host/StringConvert.h"
#include "lldb/Symbol/Block.h" #include "lldb/Symbol/Block.h"
#include "lldb/Symbol/CompileUnit.h" #include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/ObjectFile.h" #include "lldb/Symbol/ObjectFile.h"
▲ Show 20 Lines • Show All 105 Lines • ▼ Show 20 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
ReplyInline 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;
return inline_parent_sc.DumpStopContext( return inline_parent_sc.DumpStopContext(
s, exe_scope, inline_parent_addr, show_fullpaths, show_module, s, exe_scope, inline_parent_addr, show_fullpaths, show_module,
show_inlined_frames, show_function_arguments, show_function_name); show_inlined_frames, show_function_arguments, show_function_name,
inlined_block_info);
} }
} else { } else {
if (line_entry.IsValid()) { if (line_entry.IsValid()) {
dumped_something = true; dumped_something = true;
s->PutCString(" at "); s->PutCString(" at ");
if (line_entry.DumpStopContext(s, show_fullpaths)) if (line_entry.DumpStopContext(s, show_fullpaths))
dumped_something = true; dumped_something = true;
} }
▲ Show 20 Lines • Show All 1,168 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
ReplyInline Actions

Could we delete pub*, aranges, and apple_* sections?

labath: Could we delete pub***, aranges, and apple_*** sections?
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