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[lldb] Add logging to IRExecutionUnit::GetStaticInitializers

This commit is contained in:
Raphael Isemann 2019-11-19 15:21:15 +01:00
parent 254b4f2500
commit 4a6d03ad0e
1 changed files with 21 additions and 6 deletions
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27
lldb/source/Expression/IRExecutionUnit.cpp
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@ -977,14 +977,20 @@ IRExecutionUnit::FindSymbol(lldb_private::ConstString name, bool &missing_weak)
void IRExecutionUnit::GetStaticInitializers(
std::vector<lldb::addr_t> &static_initializers) {
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
llvm::GlobalVariable *global_ctors =
m_module->getNamedGlobal("llvm.global_ctors");
if (!global_ctors)
if (!global_ctors) {
LLDB_LOG(log, "Couldn't find llvm.global_ctors.");
return;
}
auto *ctor_array =
llvm::dyn_cast<llvm::ConstantArray>(global_ctors->getInitializer());
if (!ctor_array)
if (!ctor_array) {
LLDB_LOG(log, "llvm.global_ctors not a ConstantArray.");
return;
}
for (llvm::Use &ctor_use : ctor_array->operands()) {
auto *ctor_struct = llvm::dyn_cast<llvm::ConstantStruct>(ctor_use);
@ -994,16 +1000,25 @@ void IRExecutionUnit::GetStaticInitializers(
lldbassert(ctor_struct->getNumOperands() == 3);
auto *ctor_function =
llvm::dyn_cast<llvm::Function>(ctor_struct->getOperand(1));
if (!ctor_function)
if (!ctor_function) {
LLDB_LOG(log, "global_ctor doesn't contain an llvm::Function");
continue;
ConstString ctor_function_name_cs(ctor_function->getName().str());
}
ConstString ctor_function_name(ctor_function->getName().str());
LLDB_LOG(log, "Looking for callable jitted function with name {0}.",
ctor_function_name);
for (JittedFunction &jitted_function : m_jitted_functions) {
if (ctor_function_name_cs != jitted_function.m_name)
if (ctor_function_name != jitted_function.m_name)
continue;
if (jitted_function.m_remote_addr == LLDB_INVALID_ADDRESS)
if (jitted_function.m_remote_addr == LLDB_INVALID_ADDRESS) {
LLDB_LOG(log, "Found jitted function with invalid address.");
continue;
}
static_initializers.push_back(jitted_function.m_remote_addr);
LLDB_LOG(log, "Calling function at address {0:x}.",
jitted_function.m_remote_addr);
break;
}
}