llvm-project/lldb/source/Core/AddressResolverName.cpp

256 lines
7.6 KiB
C++

//===-- AddressResolverName.cpp ---------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Core/AddressResolverName.h"
// Project includes
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/StreamString.h"
#include "lldb/Symbol/ClangNamespaceDecl.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/lldb-private-log.h"
using namespace lldb;
using namespace lldb_private;
AddressResolverName::AddressResolverName
(
const char *func_name,
AddressResolver::MatchType type
) :
AddressResolver (),
m_func_name (func_name),
m_class_name (NULL),
m_regex (),
m_match_type (type)
{
if (m_match_type == AddressResolver::Regexp)
{
if (!m_regex.Compile (m_func_name.AsCString()))
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_BREAKPOINTS));
if (log)
log->Warning ("function name regexp: \"%s\" did not compile.", m_func_name.AsCString());
}
}
}
AddressResolverName::AddressResolverName
(
RegularExpression &func_regex
) :
AddressResolver (),
m_func_name (NULL),
m_class_name (NULL),
m_regex (func_regex),
m_match_type (AddressResolver::Regexp)
{
}
AddressResolverName::AddressResolverName
(
const char *class_name,
const char *method,
AddressResolver::MatchType type
) :
AddressResolver (),
m_func_name (method),
m_class_name (class_name),
m_regex (),
m_match_type (type)
{
}
AddressResolverName::~AddressResolverName ()
{
}
// FIXME: Right now we look at the module level, and call the module's "FindFunctions".
// Greg says he will add function tables, maybe at the CompileUnit level to accelerate function
// lookup. At that point, we should switch the depth to CompileUnit, and look in these tables.
Searcher::CallbackReturn
AddressResolverName::SearchCallback
(
SearchFilter &filter,
SymbolContext &context,
Address *addr,
bool containing
)
{
SymbolContextList func_list;
SymbolContextList sym_list;
bool skip_prologue = true;
uint32_t i;
SymbolContext sc;
Address func_addr;
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_BREAKPOINTS));
if (m_class_name)
{
if (log)
log->Warning ("Class/method function specification not supported yet.\n");
return Searcher::eCallbackReturnStop;
}
const bool include_symbols = false;
const bool include_inlines = true;
const bool append = false;
switch (m_match_type)
{
case AddressResolver::Exact:
if (context.module_sp)
{
context.module_sp->FindSymbolsWithNameAndType (m_func_name,
eSymbolTypeCode,
sym_list);
context.module_sp->FindFunctions (m_func_name,
NULL,
eFunctionNameTypeAuto,
include_symbols,
include_inlines,
append,
func_list);
}
break;
case AddressResolver::Regexp:
if (context.module_sp)
{
context.module_sp->FindSymbolsMatchingRegExAndType (m_regex,
eSymbolTypeCode,
sym_list);
context.module_sp->FindFunctions (m_regex,
include_symbols,
include_inlines,
append,
func_list);
}
break;
case AddressResolver::Glob:
if (log)
log->Warning ("glob is not supported yet.");
break;
}
// Remove any duplicates between the function list and the symbol list
if (func_list.GetSize())
{
for (i = 0; i < func_list.GetSize(); i++)
{
if (func_list.GetContextAtIndex(i, sc) == false)
continue;
if (sc.function == NULL)
continue;
uint32_t j = 0;
while (j < sym_list.GetSize())
{
SymbolContext symbol_sc;
if (sym_list.GetContextAtIndex(j, symbol_sc))
{
if (symbol_sc.symbol && symbol_sc.symbol->ValueIsAddress())
{
if (sc.function->GetAddressRange().GetBaseAddress() == symbol_sc.symbol->GetAddress())
{
sym_list.RemoveContextAtIndex(j);
continue; // Don't increment j
}
}
}
j++;
}
}
for (i = 0; i < func_list.GetSize(); i++)
{
if (func_list.GetContextAtIndex(i, sc))
{
if (sc.function)
{
func_addr = sc.function->GetAddressRange().GetBaseAddress();
addr_t byte_size = sc.function->GetAddressRange().GetByteSize();
if (skip_prologue)
{
const uint32_t prologue_byte_size = sc.function->GetPrologueByteSize();
if (prologue_byte_size)
{
func_addr.SetOffset (func_addr.GetOffset() + prologue_byte_size);
byte_size -= prologue_byte_size;
}
}
if (filter.AddressPasses (func_addr))
{
AddressRange new_range (func_addr, byte_size);
m_address_ranges.push_back (new_range);
}
}
}
}
}
for (i = 0; i < sym_list.GetSize(); i++)
{
if (sym_list.GetContextAtIndex(i, sc))
{
if (sc.symbol && sc.symbol->ValueIsAddress())
{
func_addr = sc.symbol->GetAddress();
addr_t byte_size = sc.symbol->GetByteSize();
if (skip_prologue)
{
const uint32_t prologue_byte_size = sc.symbol->GetPrologueByteSize();
if (prologue_byte_size)
{
func_addr.SetOffset (func_addr.GetOffset() + prologue_byte_size);
byte_size -= prologue_byte_size;
}
}
if (filter.AddressPasses (func_addr))
{
AddressRange new_range (func_addr, byte_size);
m_address_ranges.push_back (new_range);
}
}
}
}
return Searcher::eCallbackReturnContinue;
}
Searcher::Depth
AddressResolverName::GetDepth()
{
return Searcher::eDepthModule;
}
void
AddressResolverName::GetDescription (Stream *s)
{
s->PutCString("Address by function name: ");
if (m_match_type == AddressResolver::Regexp)
s->Printf("'%s' (regular expression)", m_regex.GetText());
else
s->Printf("'%s'", m_func_name.AsCString());
}