167 lines
6.5 KiB
C
167 lines
6.5 KiB
C
|
//===-- ClangExpressionParser.h ---------------------------------*- C++ -*-===//
|
||
|
|
//
|
||
|
|
// The LLVM Compiler Infrastructure
|
||
|
|
//
|
||
|
|
// This file is distributed under the University of Illinois Open Source
|
||
|
|
// License. See LICENSE.TXT for details.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#ifndef liblldb_ClangExpressionParser_h_
|
||
|
|
#define liblldb_ClangExpressionParser_h_
|
||
|
|
|
||
|
|
#include "lldb/Core/ClangForward.h"
|
||
|
|
#include "lldb/Expression/DiagnosticManager.h"
|
||
|
|
#include "lldb/Expression/ExpressionParser.h"
|
||
|
|
#include "lldb/Utility/ArchSpec.h"
|
||
|
|
#include "lldb/Utility/Status.h"
|
||
|
|
#include "lldb/lldb-public.h"
|
||
|
|
|
||
|
|
#include <string>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
namespace lldb_private {
|
||
|
|
|
||
|
|
class IRExecutionUnit;
|
||
|
|
|
||
|
|
//----------------------------------------------------------------------
|
||
|
|
/// @class ClangExpressionParser ClangExpressionParser.h
|
||
|
|
/// "lldb/Expression/ClangExpressionParser.h"
|
||
|
|
/// @brief Encapsulates an instance of Clang that can parse expressions.
|
||
|
|
///
|
||
|
|
/// ClangExpressionParser is responsible for preparing an instance of
|
||
|
|
/// ClangExpression for execution. ClangExpressionParser uses ClangExpression
|
||
|
|
/// as a glorified parameter list, performing the required parsing and
|
||
|
|
/// conversion to formats (DWARF bytecode, or JIT compiled machine code)
|
||
|
|
/// that can be executed.
|
||
|
|
//----------------------------------------------------------------------
|
||
|
|
class ClangExpressionParser : public ExpressionParser {
|
||
|
|
public:
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
/// Constructor
|
||
|
|
///
|
||
|
|
/// Initializes class variables.
|
||
|
|
///
|
||
|
|
/// @param[in] exe_scope,
|
||
|
|
/// If non-NULL, an execution context scope that can help to
|
||
|
|
/// correctly create an expression with a valid process for
|
||
|
|
/// optional tuning Objective-C runtime support. Can be NULL.
|
||
|
|
///
|
||
|
|
/// @param[in] expr
|
||
|
|
/// The expression to be parsed.
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
ClangExpressionParser(ExecutionContextScope *exe_scope, Expression &expr,
|
||
|
|
bool generate_debug_info);
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
/// Destructor
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
~ClangExpressionParser() override;
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
/// Parse a single expression and convert it to IR using Clang. Don't
|
||
|
|
/// wrap the expression in anything at all.
|
||
|
|
///
|
||
|
|
/// @param[in] diagnostic_manager
|
||
|
|
/// The diagnostic manager to report errors to.
|
||
|
|
///
|
||
|
|
/// @return
|
||
|
|
/// The number of errors encountered during parsing. 0 means
|
||
|
|
/// success.
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
unsigned Parse(DiagnosticManager &diagnostic_manager) override;
|
||
|
|
|
||
|
|
bool RewriteExpression(DiagnosticManager &diagnostic_manager) override;
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
/// Ready an already-parsed expression for execution, possibly
|
||
|
|
/// evaluating it statically.
|
||
|
|
///
|
||
|
|
/// @param[out] func_addr
|
||
|
|
/// The address to which the function has been written.
|
||
|
|
///
|
||
|
|
/// @param[out] func_end
|
||
|
|
/// The end of the function's allocated memory region. (func_addr
|
||
|
|
/// and func_end do not delimit an allocated region; the allocated
|
||
|
|
/// region may begin before func_addr.)
|
||
|
|
///
|
||
|
|
/// @param[in] execution_unit_sp
|
||
|
|
/// After parsing, ownership of the execution unit for
|
||
|
|
/// for the expression is handed to this shared pointer.
|
||
|
|
///
|
||
|
|
/// @param[in] exe_ctx
|
||
|
|
/// The execution context to write the function into.
|
||
|
|
///
|
||
|
|
/// @param[out] evaluated_statically
|
||
|
|
/// Set to true if the expression could be interpreted statically;
|
||
|
|
/// untouched otherwise.
|
||
|
|
///
|
||
|
|
/// @param[out] const_result
|
||
|
|
/// If the result of the expression is constant, and the
|
||
|
|
/// expression has no side effects, this is set to the result of the
|
||
|
|
/// expression.
|
||
|
|
///
|
||
|
|
/// @param[in] execution_policy
|
||
|
|
/// Determines whether the expression must be JIT-compiled, must be
|
||
|
|
/// evaluated statically, or whether this decision may be made
|
||
|
|
/// opportunistically.
|
||
|
|
///
|
||
|
|
/// @return
|
||
|
|
/// An error code indicating the success or failure of the operation.
|
||
|
|
/// Test with Success().
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
Status
|
||
|
|
PrepareForExecution(lldb::addr_t &func_addr, lldb::addr_t &func_end,
|
||
|
|
lldb::IRExecutionUnitSP &execution_unit_sp,
|
||
|
|
ExecutionContext &exe_ctx, bool &can_interpret,
|
||
|
|
lldb_private::ExecutionPolicy execution_policy) override;
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
/// Run all static initializers for an execution unit.
|
||
|
|
///
|
||
|
|
/// @param[in] execution_unit_sp
|
||
|
|
/// The execution unit.
|
||
|
|
///
|
||
|
|
/// @param[in] exe_ctx
|
||
|
|
/// The execution context to use when running them. Thread can't be null.
|
||
|
|
///
|
||
|
|
/// @return
|
||
|
|
/// The error code indicating the
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
Status RunStaticInitializers(lldb::IRExecutionUnitSP &execution_unit_sp,
|
||
|
|
ExecutionContext &exe_ctx);
|
||
|
|
|
||
|
|
//------------------------------------------------------------------
|
||
|
|
/// Returns a string representing current ABI.
|
||
|
|
///
|
||
|
|
/// @param[in] target_arch
|
||
|
|
/// The target architecture.
|
||
|
|
///
|
||
|
|
/// @return
|
||
|
|
/// A string representing target ABI for the current architecture.
|
||
|
|
//-------------------------------------------------------------------
|
||
|
|
std::string GetClangTargetABI(const ArchSpec &target_arch);
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::unique_ptr<llvm::LLVMContext>
|
||
|
|
m_llvm_context; ///< The LLVM context to generate IR into
|
||
|
|
std::unique_ptr<clang::FileManager>
|
||
|
|
m_file_manager; ///< The Clang file manager object used by the compiler
|
||
|
|
std::unique_ptr<clang::CompilerInstance>
|
||
|
|
m_compiler; ///< The Clang compiler used to parse expressions into IR
|
||
|
|
std::unique_ptr<clang::Builtin::Context>
|
||
|
|
m_builtin_context; ///< Context for Clang built-ins
|
||
|
|
std::unique_ptr<clang::SelectorTable>
|
||
|
|
m_selector_table; ///< Selector table for Objective-C methods
|
||
|
|
std::unique_ptr<clang::CodeGenerator>
|
||
|
|
m_code_generator; ///< The Clang object that generates IR
|
||
|
|
|
||
|
|
class LLDBPreprocessorCallbacks;
|
||
|
|
LLDBPreprocessorCallbacks *m_pp_callbacks; ///< Called when the preprocessor
|
||
|
|
///encounters module imports
|
||
|
|
std::unique_ptr<ClangASTContext> m_ast_context;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // liblldb_ClangExpressionParser_h_
|