b565e7f0c4
We generally prohibit this at a higher level - for instance requiring the process to be stopped for "expr". But when we trigger an expression for internal purposes (e.g. to fetch types from the ObjC runtime) we weren't checking the process state. Now we explicitly check this at the very start of the job so we don't get into bad states. Differential Revision: https://reviews.llvm.org/D137684
113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
//===-- UtilityFunction.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 <cstdio>
|
|
#include <sys/types.h>
|
|
|
|
#include "lldb/Core/Module.h"
|
|
#include "lldb/Core/StreamFile.h"
|
|
#include "lldb/Expression/DiagnosticManager.h"
|
|
#include "lldb/Expression/FunctionCaller.h"
|
|
#include "lldb/Expression/IRExecutionUnit.h"
|
|
#include "lldb/Expression/UtilityFunction.h"
|
|
#include "lldb/Host/Host.h"
|
|
#include "lldb/Target/ExecutionContext.h"
|
|
#include "lldb/Target/Process.h"
|
|
#include "lldb/Target/Target.h"
|
|
#include "lldb/Utility/ConstString.h"
|
|
#include "lldb/Utility/Log.h"
|
|
#include "lldb/Utility/Stream.h"
|
|
|
|
using namespace lldb_private;
|
|
using namespace lldb;
|
|
|
|
char UtilityFunction::ID;
|
|
|
|
/// Constructor
|
|
///
|
|
/// \param[in] text
|
|
/// The text of the function. Must be a full translation unit.
|
|
///
|
|
/// \param[in] name
|
|
/// The name of the function, as used in the text.
|
|
UtilityFunction::UtilityFunction(ExecutionContextScope &exe_scope,
|
|
std::string text, std::string name,
|
|
bool enable_debugging)
|
|
: Expression(exe_scope), m_execution_unit_sp(), m_jit_module_wp(),
|
|
m_function_text(std::move(text)), m_function_name(std::move(name)) {}
|
|
|
|
UtilityFunction::~UtilityFunction() {
|
|
lldb::ProcessSP process_sp(m_jit_process_wp.lock());
|
|
if (process_sp) {
|
|
lldb::ModuleSP jit_module_sp(m_jit_module_wp.lock());
|
|
if (jit_module_sp)
|
|
process_sp->GetTarget().GetImages().Remove(jit_module_sp);
|
|
}
|
|
}
|
|
|
|
// FIXME: We should check that every time this is called it is called with the
|
|
// same return type & arguments...
|
|
|
|
FunctionCaller *UtilityFunction::MakeFunctionCaller(
|
|
const CompilerType &return_type, const ValueList &arg_value_list,
|
|
lldb::ThreadSP thread_to_use_sp, Status &error) {
|
|
if (m_caller_up)
|
|
return m_caller_up.get();
|
|
|
|
ProcessSP process_sp = m_jit_process_wp.lock();
|
|
if (!process_sp) {
|
|
error.SetErrorString("Can't make a function caller without a process.");
|
|
return nullptr;
|
|
}
|
|
// Since we might need to call allocate memory and maybe call code to make
|
|
// the caller, we need to be stopped.
|
|
if (process_sp->GetState() != lldb::eStateStopped) {
|
|
error.SetErrorString("Can't make a function caller while the process is "
|
|
"running");
|
|
return nullptr;
|
|
}
|
|
|
|
Address impl_code_address;
|
|
impl_code_address.SetOffset(StartAddress());
|
|
std::string name(m_function_name);
|
|
name.append("-caller");
|
|
|
|
m_caller_up.reset(process_sp->GetTarget().GetFunctionCallerForLanguage(
|
|
Language(), return_type, impl_code_address, arg_value_list, name.c_str(),
|
|
error));
|
|
if (error.Fail()) {
|
|
|
|
return nullptr;
|
|
}
|
|
if (m_caller_up) {
|
|
DiagnosticManager diagnostics;
|
|
|
|
unsigned num_errors =
|
|
m_caller_up->CompileFunction(thread_to_use_sp, diagnostics);
|
|
if (num_errors) {
|
|
error.SetErrorStringWithFormat(
|
|
"Error compiling %s caller function: \"%s\".",
|
|
m_function_name.c_str(), diagnostics.GetString().c_str());
|
|
m_caller_up.reset();
|
|
return nullptr;
|
|
}
|
|
|
|
diagnostics.Clear();
|
|
ExecutionContext exe_ctx(process_sp);
|
|
|
|
if (!m_caller_up->WriteFunctionWrapper(exe_ctx, diagnostics)) {
|
|
error.SetErrorStringWithFormat(
|
|
"Error inserting caller function for %s: \"%s\".",
|
|
m_function_name.c_str(), diagnostics.GetString().c_str());
|
|
m_caller_up.reset();
|
|
return nullptr;
|
|
}
|
|
}
|
|
return m_caller_up.get();
|
|
}
|