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teak-llvm/lldb/source/Symbol/SymbolContext.cpp
Raphael Isemann 808142876c [lldb][NFC] Fix all formatting errors in .cpp file headers 
Summary:
A *.cpp file header in LLDB (and in LLDB) should like this:
```
//===-- TestUtilities.cpp -------------------------------------------------===//
```
However in LLDB most of our source files have arbitrary changes to this format and
these changes are spreading through LLDB as folks usually just use the existing
source files as templates for their new files (most notably the unnecessary
editor language indicator `-*- C++ -*-` is spreading and in every review
someone is pointing out that this is wrong, resulting in people pointing out that this
is done in the same way in other files).

This patch removes most of these inconsistencies including the editor language indicators,
all the different missing/additional '-' characters, files that center the file name, missing
trailing `===//` (mostly caused by clang-format breaking the line).

Reviewers: aprantl, espindola, jfb, shafik, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: dexonsmith, wuzish, emaste, sdardis, nemanjai, kbarton, MaskRay, atanasyan, arphaman, jfb, abidh, jsji, JDevlieghere, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73258
2020-01-24 08:52:55 +01:00

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//===-- SymbolContext.cpp -------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/StringConvert.h"
#include "lldb/Symbol/Block.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Symbol/SymbolFile.h"
#include "lldb/Symbol/SymbolVendor.h"
#include "lldb/Symbol/Variable.h"
#include "lldb/Target/Target.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/StreamString.h"
using namespace lldb;
using namespace lldb_private;
SymbolContext::SymbolContext()
: target_sp(), module_sp(), comp_unit(nullptr), function(nullptr),
block(nullptr), line_entry(), symbol(nullptr), variable(nullptr) {}
SymbolContext::SymbolContext(const ModuleSP &m, CompileUnit *cu, Function *f,
Block *b, LineEntry *le, Symbol *s)
: target_sp(), module_sp(m), comp_unit(cu), function(f), block(b),
line_entry(), symbol(s), variable(nullptr) {
if (le)
line_entry = *le;
}
SymbolContext::SymbolContext(const TargetSP &t, const ModuleSP &m,
CompileUnit *cu, Function *f, Block *b,
LineEntry *le, Symbol *s)
: target_sp(t), module_sp(m), comp_unit(cu), function(f), block(b),
line_entry(), symbol(s), variable(nullptr) {
if (le)
line_entry = *le;
}
SymbolContext::SymbolContext(SymbolContextScope *sc_scope)
: target_sp(), module_sp(), comp_unit(nullptr), function(nullptr),
block(nullptr), line_entry(), symbol(nullptr), variable(nullptr) {
sc_scope->CalculateSymbolContext(this);
}
SymbolContext::~SymbolContext() {}
void SymbolContext::Clear(bool clear_target) {
if (clear_target)
target_sp.reset();
module_sp.reset();
comp_unit = nullptr;
function = nullptr;
block = nullptr;
line_entry.Clear();
symbol = nullptr;
variable = nullptr;
}
bool SymbolContext::DumpStopContext(Stream *s, ExecutionContextScope *exe_scope,
const Address &addr, bool show_fullpaths,
bool show_module, bool show_inlined_frames,
bool show_function_arguments,
bool show_function_name) const {
bool dumped_something = false;
if (show_module && module_sp) {
if (show_fullpaths)
*s << module_sp->GetFileSpec();
else
*s << module_sp->GetFileSpec().GetFilename();
s->PutChar('`');
dumped_something = true;
}
if (function != nullptr) {
SymbolContext inline_parent_sc;
Address inline_parent_addr;
if (!show_function_name) {
s->Printf("<");
dumped_something = true;
} else {
ConstString name;
if (!show_function_arguments)
name = function->GetNameNoArguments();
if (!name)
name = function->GetName();
if (name)
name.Dump(s);
}
if (addr.IsValid()) {
const addr_t function_offset =
addr.GetOffset() -
function->GetAddressRange().GetBaseAddress().GetOffset();
if (!show_function_name) {
// Print +offset even if offset is 0
dumped_something = true;
s->Printf("+%" PRIu64 ">", function_offset);
} else if (function_offset) {
dumped_something = true;
s->Printf(" + %" PRIu64, function_offset);
}
}
if (GetParentOfInlinedScope(addr, inline_parent_sc, inline_parent_addr)) {
dumped_something = true;
Block *inlined_block = block->GetContainingInlinedBlock();
const InlineFunctionInfo *inlined_block_info =
inlined_block->GetInlinedFunctionInfo();
s->Printf(
" [inlined] %s",
inlined_block_info->GetName(function->GetLanguage()).GetCString());
lldb_private::AddressRange block_range;
if (inlined_block->GetRangeContainingAddress(addr, block_range)) {
const addr_t inlined_function_offset =
addr.GetOffset() - block_range.GetBaseAddress().GetOffset();
if (inlined_function_offset) {
s->Printf(" + %" PRIu64, inlined_function_offset);
}
}
const Declaration &call_site = inlined_block_info->GetCallSite();
if (call_site.IsValid()) {
s->PutCString(" at ");
call_site.DumpStopContext(s, show_fullpaths);
}
if (show_inlined_frames) {
s->EOL();
s->Indent();
const bool show_function_name = true;
return inline_parent_sc.DumpStopContext(
s, exe_scope, inline_parent_addr, show_fullpaths, show_module,
show_inlined_frames, show_function_arguments, show_function_name);
}
} else {
if (line_entry.IsValid()) {
dumped_something = true;
s->PutCString(" at ");
if (line_entry.DumpStopContext(s, show_fullpaths))
dumped_something = true;
}
}
} else if (symbol != nullptr) {
if (!show_function_name) {
s->Printf("<");
dumped_something = true;
} else if (symbol->GetName()) {
dumped_something = true;
if (symbol->GetType() == eSymbolTypeTrampoline)
s->PutCString("symbol stub for: ");
symbol->GetName().Dump(s);
}
if (addr.IsValid() && symbol->ValueIsAddress()) {
const addr_t symbol_offset =
addr.GetOffset() - symbol->GetAddressRef().GetOffset();
if (!show_function_name) {
// Print +offset even if offset is 0
dumped_something = true;
s->Printf("+%" PRIu64 ">", symbol_offset);
} else if (symbol_offset) {
dumped_something = true;
s->Printf(" + %" PRIu64, symbol_offset);
}
}
} else if (addr.IsValid()) {
addr.Dump(s, exe_scope, Address::DumpStyleModuleWithFileAddress);
dumped_something = true;
}
return dumped_something;
}
void SymbolContext::GetDescription(Stream *s, lldb::DescriptionLevel level,
Target *target) const {
if (module_sp) {
s->Indent(" Module: file = \"");
module_sp->GetFileSpec().Dump(s->AsRawOstream());
*s << '"';
if (module_sp->GetArchitecture().IsValid())
s->Printf(", arch = \"%s\"",
module_sp->GetArchitecture().GetArchitectureName());
s->EOL();
}
if (comp_unit != nullptr) {
s->Indent("CompileUnit: ");
comp_unit->GetDescription(s, level);
s->EOL();
}
if (function != nullptr) {
s->Indent(" Function: ");
function->GetDescription(s, level, target);
s->EOL();
Type *func_type = function->GetType();
if (func_type) {
s->Indent(" FuncType: ");
func_type->GetDescription(s, level, false);
s->EOL();
}
}
if (block != nullptr) {
std::vector<Block *> blocks;
blocks.push_back(block);
Block *parent_block = block->GetParent();
while (parent_block) {
blocks.push_back(parent_block);
parent_block = parent_block->GetParent();
}
std::vector<Block *>::reverse_iterator pos;
std::vector<Block *>::reverse_iterator begin = blocks.rbegin();
std::vector<Block *>::reverse_iterator end = blocks.rend();
for (pos = begin; pos != end; ++pos) {
if (pos == begin)
s->Indent(" Blocks: ");
else
s->Indent(" ");
(*pos)->GetDescription(s, function, level, target);
s->EOL();
}
}
if (line_entry.IsValid()) {
s->Indent(" LineEntry: ");
line_entry.GetDescription(s, level, comp_unit, target, false);
s->EOL();
}
if (symbol != nullptr) {
s->Indent(" Symbol: ");
symbol->GetDescription(s, level, target);
s->EOL();
}
if (variable != nullptr) {
s->Indent(" Variable: ");
s->Printf("id = {0x%8.8" PRIx64 "}, ", variable->GetID());
switch (variable->GetScope()) {
case eValueTypeVariableGlobal:
s->PutCString("kind = global, ");
break;
case eValueTypeVariableStatic:
s->PutCString("kind = static, ");
break;
case eValueTypeVariableArgument:
s->PutCString("kind = argument, ");
break;
case eValueTypeVariableLocal:
s->PutCString("kind = local, ");
break;
case eValueTypeVariableThreadLocal:
s->PutCString("kind = thread local, ");
break;
default:
break;
}
s->Printf("name = \"%s\"\n", variable->GetName().GetCString());
}
}
uint32_t SymbolContext::GetResolvedMask() const {
uint32_t resolved_mask = 0;
if (target_sp)
resolved_mask |= eSymbolContextTarget;
if (module_sp)
resolved_mask |= eSymbolContextModule;
if (comp_unit)
resolved_mask |= eSymbolContextCompUnit;
if (function)
resolved_mask |= eSymbolContextFunction;
if (block)
resolved_mask |= eSymbolContextBlock;
if (line_entry.IsValid())
resolved_mask |= eSymbolContextLineEntry;
if (symbol)
resolved_mask |= eSymbolContextSymbol;
if (variable)
resolved_mask |= eSymbolContextVariable;
return resolved_mask;
}
void SymbolContext::Dump(Stream *s, Target *target) const {
*s << this << ": ";
s->Indent();
s->PutCString("SymbolContext");
s->IndentMore();
s->EOL();
s->IndentMore();
s->Indent();
*s << "Module = " << module_sp.get() << ' ';
if (module_sp)
module_sp->GetFileSpec().Dump(s->AsRawOstream());
s->EOL();
s->Indent();
*s << "CompileUnit = " << comp_unit;
if (comp_unit != nullptr)
s->Format(" {{{0:x-16}} {1}", comp_unit->GetID(),
comp_unit->GetPrimaryFile());
s->EOL();
s->Indent();
*s << "Function = " << function;
if (function != nullptr) {
s->Format(" {{{0:x-16}} {1}, address-range = ", function->GetID(),
function->GetType()->GetName());
function->GetAddressRange().Dump(s, target, Address::DumpStyleLoadAddress,
Address::DumpStyleModuleWithFileAddress);
s->EOL();
s->Indent();
Type *func_type = function->GetType();
if (func_type) {
*s << " Type = ";
func_type->Dump(s, false);
}
}
s->EOL();
s->Indent();
*s << "Block = " << block;
if (block != nullptr)
s->Format(" {{{0:x-16}}", block->GetID());
s->EOL();
s->Indent();
*s << "LineEntry = ";
line_entry.Dump(s, target, true, Address::DumpStyleLoadAddress,
Address::DumpStyleModuleWithFileAddress, true);
s->EOL();
s->Indent();
*s << "Symbol = " << symbol;
if (symbol != nullptr && symbol->GetMangled())
*s << ' ' << symbol->GetName().AsCString();
s->EOL();
*s << "Variable = " << variable;
if (variable != nullptr) {
s->Format(" {{{0:x-16}} {1}", variable->GetID(),
variable->GetType()->GetName());
s->EOL();
}
s->IndentLess();
s->IndentLess();
}
bool lldb_private::operator==(const SymbolContext &lhs,
const SymbolContext &rhs) {
return lhs.function == rhs.function && lhs.symbol == rhs.symbol &&
lhs.module_sp.get() == rhs.module_sp.get() &&
lhs.comp_unit == rhs.comp_unit &&
lhs.target_sp.get() == rhs.target_sp.get() &&
LineEntry::Compare(lhs.line_entry, rhs.line_entry) == 0 &&
lhs.variable == rhs.variable;
}
bool lldb_private::operator!=(const SymbolContext &lhs,
const SymbolContext &rhs) {
return !(lhs == rhs);
}
bool SymbolContext::GetAddressRange(uint32_t scope, uint32_t range_idx,
bool use_inline_block_range,
AddressRange &range) const {
if ((scope & eSymbolContextLineEntry) && line_entry.IsValid()) {
range = line_entry.range;
return true;
}
if ((scope & eSymbolContextBlock) && (block != nullptr)) {
if (use_inline_block_range) {
Block *inline_block = block->GetContainingInlinedBlock();
if (inline_block)
return inline_block->GetRangeAtIndex(range_idx, range);
} else {
return block->GetRangeAtIndex(range_idx, range);
}
}
if ((scope & eSymbolContextFunction) && (function != nullptr)) {
if (range_idx == 0) {
range = function->GetAddressRange();
return true;
}
}
if ((scope & eSymbolContextSymbol) && (symbol != nullptr)) {
if (range_idx == 0) {
if (symbol->ValueIsAddress()) {
range.GetBaseAddress() = symbol->GetAddressRef();
range.SetByteSize(symbol->GetByteSize());
return true;
}
}
}
range.Clear();
return false;
}
LanguageType SymbolContext::GetLanguage() const {
LanguageType lang;
if (function && (lang = function->GetLanguage()) != eLanguageTypeUnknown) {
return lang;
} else if (variable &&
(lang = variable->GetLanguage()) != eLanguageTypeUnknown) {
return lang;
} else if (symbol && (lang = symbol->GetLanguage()) != eLanguageTypeUnknown) {
return lang;
} else if (comp_unit &&
(lang = comp_unit->GetLanguage()) != eLanguageTypeUnknown) {
return lang;
} else if (symbol) {
// If all else fails, try to guess the language from the name.
return symbol->GetMangled().GuessLanguage();
}
return eLanguageTypeUnknown;
}
bool SymbolContext::GetParentOfInlinedScope(const Address &curr_frame_pc,
SymbolContext &next_frame_sc,
Address &next_frame_pc) const {
next_frame_sc.Clear(false);
next_frame_pc.Clear();
if (block) {
// const addr_t curr_frame_file_addr = curr_frame_pc.GetFileAddress();
// In order to get the parent of an inlined function we first need to see
// if we are in an inlined block as "this->block" could be an inlined
// block, or a parent of "block" could be. So lets check if this block or
// one of this blocks parents is an inlined function.
Block *curr_inlined_block = block->GetContainingInlinedBlock();
if (curr_inlined_block) {
// "this->block" is contained in an inline function block, so to get the
// scope above the inlined block, we get the parent of the inlined block
// itself
Block *next_frame_block = curr_inlined_block->GetParent();
// Now calculate the symbol context of the containing block
next_frame_block->CalculateSymbolContext(&next_frame_sc);
// If we get here we weren't able to find the return line entry using the
// nesting of the blocks and the line table. So just use the call site
// info from our inlined block.
AddressRange range;
if (curr_inlined_block->GetRangeContainingAddress(curr_frame_pc, range)) {
// To see there this new frame block it, we need to look at the call
// site information from
const InlineFunctionInfo *curr_inlined_block_inlined_info =
curr_inlined_block->GetInlinedFunctionInfo();
next_frame_pc = range.GetBaseAddress();
next_frame_sc.line_entry.range.GetBaseAddress() = next_frame_pc;
next_frame_sc.line_entry.file =
curr_inlined_block_inlined_info->GetCallSite().GetFile();
next_frame_sc.line_entry.original_file =
curr_inlined_block_inlined_info->GetCallSite().GetFile();
next_frame_sc.line_entry.line =
curr_inlined_block_inlined_info->GetCallSite().GetLine();
next_frame_sc.line_entry.column =
curr_inlined_block_inlined_info->GetCallSite().GetColumn();
return true;
} else {
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_SYMBOLS));
if (log) {
LLDB_LOGF(
log,
"warning: inlined block 0x%8.8" PRIx64
" doesn't have a range that contains file address 0x%" PRIx64,
curr_inlined_block->GetID(), curr_frame_pc.GetFileAddress());
}
#ifdef LLDB_CONFIGURATION_DEBUG
else {
ObjectFile *objfile = nullptr;
if (module_sp) {
if (SymbolFile *symbol_file = module_sp->GetSymbolFile())
objfile = symbol_file->GetObjectFile();
}
if (objfile) {
Host::SystemLog(
Host::eSystemLogWarning,
"warning: inlined block 0x%8.8" PRIx64
" doesn't have a range that contains file address 0x%" PRIx64
" in %s\n",
curr_inlined_block->GetID(), curr_frame_pc.GetFileAddress(),
objfile->GetFileSpec().GetPath().c_str());
} else {
Host::SystemLog(
Host::eSystemLogWarning,
"warning: inlined block 0x%8.8" PRIx64
" doesn't have a range that contains file address 0x%" PRIx64
"\n",
curr_inlined_block->GetID(), curr_frame_pc.GetFileAddress());
}
}
#endif
}
}
}
return false;
}
Block *SymbolContext::GetFunctionBlock() {
if (function) {
if (block) {
// If this symbol context has a block, check to see if this block is
// itself, or is contained within a block with inlined function
// information. If so, then the inlined block is the block that defines
// the function.
Block *inlined_block = block->GetContainingInlinedBlock();
if (inlined_block)
return inlined_block;
// The block in this symbol context is not inside an inlined block, so
// the block that defines the function is the function's top level block,
// which is returned below.
}
// There is no block information in this symbol context, so we must assume
// that the block that is desired is the top level block of the function
// itself.
return &function->GetBlock(true);
}
return nullptr;
}
bool SymbolContext::GetFunctionMethodInfo(lldb::LanguageType &language,
bool &is_instance_method,
ConstString &language_object_name)
{
Block *function_block = GetFunctionBlock();
if (function_block) {
CompilerDeclContext decl_ctx = function_block->GetDeclContext();
if (decl_ctx)
return decl_ctx.IsClassMethod(&language, &is_instance_method,
&language_object_name);
}
return false;
}
void SymbolContext::SortTypeList(TypeMap &type_map, TypeList &type_list) const {
Block *curr_block = block;
bool isInlinedblock = false;
if (curr_block != nullptr &&
curr_block->GetContainingInlinedBlock() != nullptr)
isInlinedblock = true;
// Find all types that match the current block if we have one and put them
// first in the list. Keep iterating up through all blocks.
while (curr_block != nullptr && !isInlinedblock) {
type_map.ForEach(
[curr_block, &type_list](const lldb::TypeSP &type_sp) -> bool {
SymbolContextScope *scs = type_sp->GetSymbolContextScope();
if (scs && curr_block == scs->CalculateSymbolContextBlock())
type_list.Insert(type_sp);
return true; // Keep iterating
});
// Remove any entries that are now in "type_list" from "type_map" since we
// can't remove from type_map while iterating
type_list.ForEach([&type_map](const lldb::TypeSP &type_sp) -> bool {
type_map.Remove(type_sp);
return true; // Keep iterating
});
curr_block = curr_block->GetParent();
}
// Find all types that match the current function, if we have onem, and put
// them next in the list.
if (function != nullptr && !type_map.Empty()) {
const size_t old_type_list_size = type_list.GetSize();
type_map.ForEach([this, &type_list](const lldb::TypeSP &type_sp) -> bool {
SymbolContextScope *scs = type_sp->GetSymbolContextScope();
if (scs && function == scs->CalculateSymbolContextFunction())
type_list.Insert(type_sp);
return true; // Keep iterating
});
// Remove any entries that are now in "type_list" from "type_map" since we
// can't remove from type_map while iterating
const size_t new_type_list_size = type_list.GetSize();
if (new_type_list_size > old_type_list_size) {
for (size_t i = old_type_list_size; i < new_type_list_size; ++i)
type_map.Remove(type_list.GetTypeAtIndex(i));
}
}
// Find all types that match the current compile unit, if we have one, and
// put them next in the list.
if (comp_unit != nullptr && !type_map.Empty()) {
const size_t old_type_list_size = type_list.GetSize();
type_map.ForEach([this, &type_list](const lldb::TypeSP &type_sp) -> bool {
SymbolContextScope *scs = type_sp->GetSymbolContextScope();
if (scs && comp_unit == scs->CalculateSymbolContextCompileUnit())
type_list.Insert(type_sp);
return true; // Keep iterating
});
// Remove any entries that are now in "type_list" from "type_map" since we
// can't remove from type_map while iterating
const size_t new_type_list_size = type_list.GetSize();
if (new_type_list_size > old_type_list_size) {
for (size_t i = old_type_list_size; i < new_type_list_size; ++i)
type_map.Remove(type_list.GetTypeAtIndex(i));
}
}
// Find all types that match the current module, if we have one, and put them
// next in the list.
if (module_sp && !type_map.Empty()) {
const size_t old_type_list_size = type_list.GetSize();
type_map.ForEach([this, &type_list](const lldb::TypeSP &type_sp) -> bool {
SymbolContextScope *scs = type_sp->GetSymbolContextScope();
if (scs && module_sp == scs->CalculateSymbolContextModule())
type_list.Insert(type_sp);
return true; // Keep iterating
});
// Remove any entries that are now in "type_list" from "type_map" since we
// can't remove from type_map while iterating
const size_t new_type_list_size = type_list.GetSize();
if (new_type_list_size > old_type_list_size) {
for (size_t i = old_type_list_size; i < new_type_list_size; ++i)
type_map.Remove(type_list.GetTypeAtIndex(i));
}
}
// Any types that are left get copied into the list an any order.
if (!type_map.Empty()) {
type_map.ForEach([&type_list](const lldb::TypeSP &type_sp) -> bool {
type_list.Insert(type_sp);
return true; // Keep iterating
});
}
}
ConstString
SymbolContext::GetFunctionName(Mangled::NamePreference preference) const {
if (function) {
if (block) {
Block *inlined_block = block->GetContainingInlinedBlock();
if (inlined_block) {
const InlineFunctionInfo *inline_info =
inlined_block->GetInlinedFunctionInfo();
if (inline_info)
return inline_info->GetName(function->GetLanguage());
}
}
return function->GetMangled().GetName(function->GetLanguage(), preference);
} else if (symbol && symbol->ValueIsAddress()) {
return symbol->GetMangled().GetName(symbol->GetLanguage(), preference);
} else {
// No function, return an empty string.
return ConstString();
}
}
LineEntry SymbolContext::GetFunctionStartLineEntry() const {
LineEntry line_entry;
Address start_addr;
if (block) {
Block *inlined_block = block->GetContainingInlinedBlock();
if (inlined_block) {
if (inlined_block->GetStartAddress(start_addr)) {
if (start_addr.CalculateSymbolContextLineEntry(line_entry))
return line_entry;
}
return LineEntry();
}
}
if (function) {
if (function->GetAddressRange()
.GetBaseAddress()
.CalculateSymbolContextLineEntry(line_entry))
return line_entry;
}
return LineEntry();
}
bool SymbolContext::GetAddressRangeFromHereToEndLine(uint32_t end_line,
AddressRange &range,
Status &error) {
if (!line_entry.IsValid()) {
error.SetErrorString("Symbol context has no line table.");
return false;
}
range = line_entry.range;
if (line_entry.line > end_line) {
error.SetErrorStringWithFormat(
"end line option %d must be after the current line: %d", end_line,
line_entry.line);
return false;
}
uint32_t line_index = 0;
bool found = false;
while (true) {
LineEntry this_line;
line_index = comp_unit->FindLineEntry(line_index, line_entry.line, nullptr,
false, &this_line);
if (line_index == UINT32_MAX)
break;
if (LineEntry::Compare(this_line, line_entry) == 0) {
found = true;
break;
}
}
LineEntry end_entry;
if (!found) {
// Can't find the index of the SymbolContext's line entry in the
// SymbolContext's CompUnit.
error.SetErrorString(
"Can't find the current line entry in the CompUnit - can't process "
"the end-line option");
return false;
}
line_index = comp_unit->FindLineEntry(line_index, end_line, nullptr, false,
&end_entry);
if (line_index == UINT32_MAX) {
error.SetErrorStringWithFormat(
"could not find a line table entry corresponding "
"to end line number %d",
end_line);
return false;
}
Block *func_block = GetFunctionBlock();
if (func_block && func_block->GetRangeIndexContainingAddress(
end_entry.range.GetBaseAddress()) == UINT32_MAX) {
error.SetErrorStringWithFormat(
"end line number %d is not contained within the current function.",
end_line);
return false;
}
lldb::addr_t range_size = end_entry.range.GetBaseAddress().GetFileAddress() -
range.GetBaseAddress().GetFileAddress();
range.SetByteSize(range_size);
return true;
}
const Symbol *SymbolContext::FindBestGlobalDataSymbol(ConstString name,
Status &error) {
error.Clear();
if (!target_sp) {
return nullptr;
}
Target &target = *target_sp;
Module *module = module_sp.get();
auto ProcessMatches = [this, &name, &target,
module](SymbolContextList &sc_list,
Status &error) -> const Symbol * {
llvm::SmallVector<const Symbol *, 1> external_symbols;
llvm::SmallVector<const Symbol *, 1> internal_symbols;
const uint32_t matches = sc_list.GetSize();
for (uint32_t i = 0; i < matches; ++i) {
SymbolContext sym_ctx;
sc_list.GetContextAtIndex(i, sym_ctx);
if (sym_ctx.symbol) {
const Symbol *symbol = sym_ctx.symbol;
const Address sym_address = symbol->GetAddress();
if (sym_address.IsValid()) {
switch (symbol->GetType()) {
case eSymbolTypeData:
case eSymbolTypeRuntime:
case eSymbolTypeAbsolute:
case eSymbolTypeObjCClass:
case eSymbolTypeObjCMetaClass:
case eSymbolTypeObjCIVar:
if (symbol->GetDemangledNameIsSynthesized()) {
// If the demangled name was synthesized, then don't use it for
// expressions. Only let the symbol match if the mangled named
// matches for these symbols.
if (symbol->GetMangled().GetMangledName() != name)
break;
}
if (symbol->IsExternal()) {
external_symbols.push_back(symbol);
} else {
internal_symbols.push_back(symbol);
}
break;
case eSymbolTypeReExported: {
ConstString reexport_name = symbol->GetReExportedSymbolName();
if (reexport_name) {
ModuleSP reexport_module_sp;
ModuleSpec reexport_module_spec;
reexport_module_spec.GetPlatformFileSpec() =
symbol->GetReExportedSymbolSharedLibrary();
if (reexport_module_spec.GetPlatformFileSpec()) {
reexport_module_sp =
target.GetImages().FindFirstModule(reexport_module_spec);
if (!reexport_module_sp) {
reexport_module_spec.GetPlatformFileSpec()
.GetDirectory()
.Clear();
reexport_module_sp =
target.GetImages().FindFirstModule(reexport_module_spec);
}
}
// Don't allow us to try and resolve a re-exported symbol if it
// is the same as the current symbol
if (name == symbol->GetReExportedSymbolName() &&
module == reexport_module_sp.get())
return nullptr;
return FindBestGlobalDataSymbol(symbol->GetReExportedSymbolName(),
error);
}
} break;
case eSymbolTypeCode: // We already lookup functions elsewhere
case eSymbolTypeVariable:
case eSymbolTypeLocal:
case eSymbolTypeParam:
case eSymbolTypeTrampoline:
case eSymbolTypeInvalid:
case eSymbolTypeException:
case eSymbolTypeSourceFile:
case eSymbolTypeHeaderFile:
case eSymbolTypeObjectFile:
case eSymbolTypeCommonBlock:
case eSymbolTypeBlock:
case eSymbolTypeVariableType:
case eSymbolTypeLineEntry:
case eSymbolTypeLineHeader:
case eSymbolTypeScopeBegin:
case eSymbolTypeScopeEnd:
case eSymbolTypeAdditional:
case eSymbolTypeCompiler:
case eSymbolTypeInstrumentation:
case eSymbolTypeUndefined:
case eSymbolTypeResolver:
break;
}
}
}
}
if (external_symbols.size() > 1) {
StreamString ss;
ss.Printf("Multiple external symbols found for '%s'\n", name.AsCString());
for (const Symbol *symbol : external_symbols) {
symbol->GetDescription(&ss, eDescriptionLevelFull, &target);
}
ss.PutChar('\n');
error.SetErrorString(ss.GetData());
return nullptr;
} else if (external_symbols.size()) {
return external_symbols[0];
} else if (internal_symbols.size() > 1) {
StreamString ss;
ss.Printf("Multiple internal symbols found for '%s'\n", name.AsCString());
for (const Symbol *symbol : internal_symbols) {
symbol->GetDescription(&ss, eDescriptionLevelVerbose, &target);
ss.PutChar('\n');
}
error.SetErrorString(ss.GetData());
return nullptr;
} else if (internal_symbols.size()) {
return internal_symbols[0];
} else {
return nullptr;
}
};
if (module) {
SymbolContextList sc_list;
module->FindSymbolsWithNameAndType(name, eSymbolTypeAny, sc_list);
const Symbol *const module_symbol = ProcessMatches(sc_list, error);
if (!error.Success()) {
return nullptr;
} else if (module_symbol) {
return module_symbol;
}
}
{
SymbolContextList sc_list;
target.GetImages().FindSymbolsWithNameAndType(name, eSymbolTypeAny,
sc_list);
const Symbol *const target_symbol = ProcessMatches(sc_list, error);
if (!error.Success()) {
return nullptr;
} else if (target_symbol) {
return target_symbol;
}
}
return nullptr; // no error; we just didn't find anything
}
//
// SymbolContextSpecifier
//
SymbolContextSpecifier::SymbolContextSpecifier(const TargetSP &target_sp)
: m_target_sp(target_sp), m_module_spec(), m_module_sp(), m_file_spec_up(),
m_start_line(0), m_end_line(0), m_function_spec(), m_class_name(),
m_address_range_up(), m_type(eNothingSpecified) {}
SymbolContextSpecifier::~SymbolContextSpecifier() {}
bool SymbolContextSpecifier::AddLineSpecification(uint32_t line_no,
SpecificationType type) {
bool return_value = true;
switch (type) {
case eNothingSpecified:
Clear();
break;
case eLineStartSpecified:
m_start_line = line_no;
m_type |= eLineStartSpecified;
break;
case eLineEndSpecified:
m_end_line = line_no;
m_type |= eLineEndSpecified;
break;
default:
return_value = false;
break;
}
return return_value;
}
bool SymbolContextSpecifier::AddSpecification(const char *spec_string,
SpecificationType type) {
bool return_value = true;
switch (type) {
case eNothingSpecified:
Clear();
break;
case eModuleSpecified: {
// See if we can find the Module, if so stick it in the SymbolContext.
FileSpec module_file_spec(spec_string);
ModuleSpec module_spec(module_file_spec);
lldb::ModuleSP module_sp(
m_target_sp->GetImages().FindFirstModule(module_spec));
m_type |= eModuleSpecified;
if (module_sp)
m_module_sp = module_sp;
else
m_module_spec.assign(spec_string);
} break;
case eFileSpecified:
// CompUnits can't necessarily be resolved here, since an inlined function
// might show up in a number of CompUnits. Instead we just convert to a
// FileSpec and store it away.
m_file_spec_up.reset(new FileSpec(spec_string));
m_type |= eFileSpecified;
break;
case eLineStartSpecified:
m_start_line = StringConvert::ToSInt32(spec_string, 0, 0, &return_value);
if (return_value)
m_type |= eLineStartSpecified;
break;
case eLineEndSpecified:
m_end_line = StringConvert::ToSInt32(spec_string, 0, 0, &return_value);
if (return_value)
m_type |= eLineEndSpecified;
break;
case eFunctionSpecified:
m_function_spec.assign(spec_string);
m_type |= eFunctionSpecified;
break;
case eClassOrNamespaceSpecified:
Clear();
m_class_name.assign(spec_string);
m_type = eClassOrNamespaceSpecified;
break;
case eAddressRangeSpecified:
// Not specified yet...
break;
}
return return_value;
}
void SymbolContextSpecifier::Clear() {
m_module_spec.clear();
m_file_spec_up.reset();
m_function_spec.clear();
m_class_name.clear();
m_start_line = 0;
m_end_line = 0;
m_address_range_up.reset();
m_type = eNothingSpecified;
}
bool SymbolContextSpecifier::SymbolContextMatches(SymbolContext &sc) {
if (m_type == eNothingSpecified)
return true;
if (m_target_sp.get() != sc.target_sp.get())
return false;
if (m_type & eModuleSpecified) {
if (sc.module_sp) {
if (m_module_sp.get() != nullptr) {
if (m_module_sp.get() != sc.module_sp.get())
return false;
} else {
FileSpec module_file_spec(m_module_spec);
if (!FileSpec::Match(module_file_spec, sc.module_sp->GetFileSpec()))
return false;
}
}
}
if (m_type & eFileSpecified) {
if (m_file_spec_up) {
// If we don't have a block or a comp_unit, then we aren't going to match
// a source file.
if (sc.block == nullptr && sc.comp_unit == nullptr)
return false;
// Check if the block is present, and if so is it inlined:
bool was_inlined = false;
if (sc.block != nullptr) {
const InlineFunctionInfo *inline_info =
sc.block->GetInlinedFunctionInfo();
if (inline_info != nullptr) {
was_inlined = true;
if (!FileSpec::Match(*m_file_spec_up,
inline_info->GetDeclaration().GetFile()))
return false;
}
}
// Next check the comp unit, but only if the SymbolContext was not
// inlined.
if (!was_inlined && sc.comp_unit != nullptr) {
if (!FileSpec::Match(*m_file_spec_up, sc.comp_unit->GetPrimaryFile()))
return false;
}
}
}
if (m_type & eLineStartSpecified || m_type & eLineEndSpecified) {
if (sc.line_entry.line < m_start_line || sc.line_entry.line > m_end_line)
return false;
}
if (m_type & eFunctionSpecified) {
// First check the current block, and if it is inlined, get the inlined
// function name:
bool was_inlined = false;
ConstString func_name(m_function_spec.c_str());
if (sc.block != nullptr) {
const InlineFunctionInfo *inline_info =
sc.block->GetInlinedFunctionInfo();
if (inline_info != nullptr) {
was_inlined = true;
const Mangled &name = inline_info->GetMangled();
if (!name.NameMatches(func_name, sc.function->GetLanguage()))
return false;
}
}
// If it wasn't inlined, check the name in the function or symbol:
if (!was_inlined) {
if (sc.function != nullptr) {
if (!sc.function->GetMangled().NameMatches(func_name,
sc.function->GetLanguage()))
return false;
} else if (sc.symbol != nullptr) {
if (!sc.symbol->GetMangled().NameMatches(func_name,
sc.symbol->GetLanguage()))
return false;
}
}
}
return true;
}
bool SymbolContextSpecifier::AddressMatches(lldb::addr_t addr) {
if (m_type & eAddressRangeSpecified) {
} else {
Address match_address(addr, nullptr);
SymbolContext sc;
m_target_sp->GetImages().ResolveSymbolContextForAddress(
match_address, eSymbolContextEverything, sc);
return SymbolContextMatches(sc);
}
return true;
}
void SymbolContextSpecifier::GetDescription(
Stream *s, lldb::DescriptionLevel level) const {
char path_str[PATH_MAX + 1];
if (m_type == eNothingSpecified) {
s->Printf("Nothing specified.\n");
}
if (m_type == eModuleSpecified) {
s->Indent();
if (m_module_sp) {
m_module_sp->GetFileSpec().GetPath(path_str, PATH_MAX);
s->Printf("Module: %s\n", path_str);
} else
s->Printf("Module: %s\n", m_module_spec.c_str());
}
if (m_type == eFileSpecified && m_file_spec_up != nullptr) {
m_file_spec_up->GetPath(path_str, PATH_MAX);
s->Indent();
s->Printf("File: %s", path_str);
if (m_type == eLineStartSpecified) {
s->Printf(" from line %" PRIu64 "", (uint64_t)m_start_line);
if (m_type == eLineEndSpecified)
s->Printf("to line %" PRIu64 "", (uint64_t)m_end_line);
else
s->Printf("to end");
} else if (m_type == eLineEndSpecified) {
s->Printf(" from start to line %" PRIu64 "", (uint64_t)m_end_line);
}
s->Printf(".\n");
}
if (m_type == eLineStartSpecified) {
s->Indent();
s->Printf("From line %" PRIu64 "", (uint64_t)m_start_line);
if (m_type == eLineEndSpecified)
s->Printf("to line %" PRIu64 "", (uint64_t)m_end_line);
else
s->Printf("to end");
s->Printf(".\n");
} else if (m_type == eLineEndSpecified) {
s->Printf("From start to line %" PRIu64 ".\n", (uint64_t)m_end_line);
}
if (m_type == eFunctionSpecified) {
s->Indent();
s->Printf("Function: %s.\n", m_function_spec.c_str());
}
if (m_type == eClassOrNamespaceSpecified) {
s->Indent();
s->Printf("Class name: %s.\n", m_class_name.c_str());
}
if (m_type == eAddressRangeSpecified && m_address_range_up != nullptr) {
s->Indent();
s->PutCString("Address range: ");
m_address_range_up->Dump(s, m_target_sp.get(),
Address::DumpStyleLoadAddress,
Address::DumpStyleFileAddress);
s->PutCString("\n");
}
}
//
// SymbolContextList
//
SymbolContextList::SymbolContextList() : m_symbol_contexts() {}
SymbolContextList::~SymbolContextList() {}
void SymbolContextList::Append(const SymbolContext &sc) {
m_symbol_contexts.push_back(sc);
}
void SymbolContextList::Append(const SymbolContextList &sc_list) {
collection::const_iterator pos, end = sc_list.m_symbol_contexts.end();
for (pos = sc_list.m_symbol_contexts.begin(); pos != end; ++pos)
m_symbol_contexts.push_back(*pos);
}
uint32_t SymbolContextList::AppendIfUnique(const SymbolContextList &sc_list,
bool merge_symbol_into_function) {
uint32_t unique_sc_add_count = 0;
collection::const_iterator pos, end = sc_list.m_symbol_contexts.end();
for (pos = sc_list.m_symbol_contexts.begin(); pos != end; ++pos) {
if (AppendIfUnique(*pos, merge_symbol_into_function))
++unique_sc_add_count;
}
return unique_sc_add_count;
}
bool SymbolContextList::AppendIfUnique(const SymbolContext &sc,
bool merge_symbol_into_function) {
collection::iterator pos, end = m_symbol_contexts.end();
for (pos = m_symbol_contexts.begin(); pos != end; ++pos) {
if (*pos == sc)
return false;
}
if (merge_symbol_into_function && sc.symbol != nullptr &&
sc.comp_unit == nullptr && sc.function == nullptr &&
sc.block == nullptr && !sc.line_entry.IsValid()) {
if (sc.symbol->ValueIsAddress()) {
for (pos = m_symbol_contexts.begin(); pos != end; ++pos) {
// Don't merge symbols into inlined function symbol contexts
if (pos->block && pos->block->GetContainingInlinedBlock())
continue;
if (pos->function) {
if (pos->function->GetAddressRange().GetBaseAddress() ==
sc.symbol->GetAddressRef()) {
// Do we already have a function with this symbol?
if (pos->symbol == sc.symbol)
return false;
if (pos->symbol == nullptr) {
pos->symbol = sc.symbol;
return false;
}
}
}
}
}
}
m_symbol_contexts.push_back(sc);
return true;
}
void SymbolContextList::Clear() { m_symbol_contexts.clear(); }
void SymbolContextList::Dump(Stream *s, Target *target) const {
*s << this << ": ";
s->Indent();
s->PutCString("SymbolContextList");
s->EOL();
s->IndentMore();
collection::const_iterator pos, end = m_symbol_contexts.end();
for (pos = m_symbol_contexts.begin(); pos != end; ++pos) {
// pos->Dump(s, target);
pos->GetDescription(s, eDescriptionLevelVerbose, target);
}
s->IndentLess();
}
bool SymbolContextList::GetContextAtIndex(size_t idx, SymbolContext &sc) const {
if (idx < m_symbol_contexts.size()) {
sc = m_symbol_contexts[idx];
return true;
}
return false;
}
bool SymbolContextList::RemoveContextAtIndex(size_t idx) {
if (idx < m_symbol_contexts.size()) {
m_symbol_contexts.erase(m_symbol_contexts.begin() + idx);
return true;
}
return false;
}
uint32_t SymbolContextList::GetSize() const { return m_symbol_contexts.size(); }
bool SymbolContextList::IsEmpty() const { return m_symbol_contexts.empty(); }
uint32_t SymbolContextList::NumLineEntriesWithLine(uint32_t line) const {
uint32_t match_count = 0;
const size_t size = m_symbol_contexts.size();
for (size_t idx = 0; idx < size; ++idx) {
if (m_symbol_contexts[idx].line_entry.line == line)
++match_count;
}
return match_count;
}
void SymbolContextList::GetDescription(Stream *s, lldb::DescriptionLevel level,
Target *target) const {
const size_t size = m_symbol_contexts.size();
for (size_t idx = 0; idx < size; ++idx)
m_symbol_contexts[idx].GetDescription(s, level, target);
}
bool lldb_private::operator==(const SymbolContextList &lhs,
const SymbolContextList &rhs) {
const uint32_t size = lhs.GetSize();
if (size != rhs.GetSize())
return false;
SymbolContext lhs_sc;
SymbolContext rhs_sc;
for (uint32_t i = 0; i < size; ++i) {
lhs.GetContextAtIndex(i, lhs_sc);
rhs.GetContextAtIndex(i, rhs_sc);
if (lhs_sc != rhs_sc)
return false;
}
return true;
}
bool lldb_private::operator!=(const SymbolContextList &lhs,
const SymbolContextList &rhs) {
return !(lhs == rhs);
}
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