2010-06-09 00:52:24 +08:00
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//===-- ClangFunction.cpp ---------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/RecordLayout.h"
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2010-07-03 02:39:06 +08:00
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#include "clang/CodeGen/CodeGenAction.h"
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#include "clang/CodeGen/ModuleBuilder.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ExecutionEngine/ExecutionEngine.h"
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#include "llvm/ExecutionEngine/JIT.h"
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#include "llvm/Module.h"
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2010-06-09 00:52:24 +08:00
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// Project includes
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#include "lldb/Expression/ClangFunction.h"
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#include "lldb/Symbol/Type.h"
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#include "lldb/Core/DataExtractor.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/Core/ValueObjectList.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Symbol/ClangASTContext.h"
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#include "lldb/Symbol/Function.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Thread.h"
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#include "lldb/Target/ThreadPlan.h"
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#include "lldb/Target/ThreadPlanCallFunction.h"
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#include "lldb/Core/Log.h"
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// ClangFunction constructor
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//----------------------------------------------------------------------
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ClangFunction::ClangFunction(const char *target_triple, ClangASTContext *ast_context, void *return_qualtype, const Address& functionAddress, const ValueList &arg_value_list) :
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ClangExpression (target_triple, NULL),
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m_function_ptr (NULL),
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m_function_addr (functionAddress),
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m_function_return_qual_type(return_qualtype),
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m_clang_ast_context (ast_context),
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m_wrapper_function_name ("__lldb_caller_function"),
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m_wrapper_struct_name ("__lldb_caller_struct"),
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m_wrapper_function_addr (),
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m_wrapper_args_addrs (),
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m_struct_layout (NULL),
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m_arg_values (arg_value_list),
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m_value_struct_size (0),
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m_return_offset(0),
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m_return_size (0),
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m_compiled (false),
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m_JITted (false)
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{
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}
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ClangFunction::ClangFunction(const char *target_triple, Function &function, ClangASTContext *ast_context, const ValueList &arg_value_list) :
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ClangExpression (target_triple, NULL),
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m_function_ptr (&function),
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m_function_addr (),
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m_function_return_qual_type (),
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m_clang_ast_context (ast_context),
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m_wrapper_function_name ("__lldb_function_caller"),
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m_wrapper_struct_name ("__lldb_caller_struct"),
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m_wrapper_function_addr (),
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m_wrapper_args_addrs (),
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m_struct_layout (NULL),
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m_arg_values (arg_value_list),
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m_value_struct_size (0),
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m_return_offset (0),
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m_return_size (0),
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m_compiled (false),
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m_JITted (false)
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{
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m_function_addr = m_function_ptr->GetAddressRange().GetBaseAddress();
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m_function_return_qual_type = m_function_ptr->GetReturnType().GetOpaqueClangQualType();
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}
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//----------------------------------------------------------------------
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// Destructor
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//----------------------------------------------------------------------
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ClangFunction::~ClangFunction()
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{
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}
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unsigned
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ClangFunction::CompileFunction (Stream &errors)
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{
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// FIXME: How does clang tell us there's no return value? We need to handle that case.
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unsigned num_errors = 0;
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if (!m_compiled)
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{
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std::string return_type_str = ClangASTContext::GetTypeName(m_function_return_qual_type);
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// Cons up the function we're going to wrap our call in, then compile it...
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// We declare the function "extern "C"" because the compiler might be in C++
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// mode which would mangle the name and then we couldn't find it again...
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std::string expression;
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expression.append ("extern \"C\" void ");
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expression.append (m_wrapper_function_name);
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expression.append (" (void *input)\n{\n struct ");
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expression.append (m_wrapper_struct_name);
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expression.append (" \n {\n");
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expression.append (" ");
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expression.append (return_type_str);
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expression.append (" (*fn_ptr) (");
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// Get the number of arguments. If we have a function type and it is prototyped,
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// trust that, otherwise use the values we were given.
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// FIXME: This will need to be extended to handle Variadic functions. We'll need
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// to pull the defined arguments out of the function, then add the types from the
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// arguments list for the variable arguments.
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uint32_t num_args = UINT32_MAX;
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bool trust_function = false;
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// GetArgumentCount returns -1 for an unprototyped function.
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if (m_function_ptr)
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{
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int num_func_args = m_function_ptr->GetArgumentCount();
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if (num_func_args >= 0)
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trust_function = true;
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else
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num_args = num_func_args;
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}
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if (num_args == UINT32_MAX)
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num_args = m_arg_values.GetSize();
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std::string args_buffer; // This one stores the definition of all the args in "struct caller".
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std::string args_list_buffer; // This one stores the argument list called from the structure.
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for (size_t i = 0; i < num_args; i++)
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{
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const char *type_string;
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std::string type_stdstr;
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if (trust_function)
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{
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type_string = m_function_ptr->GetArgumentTypeAtIndex(i).GetName().AsCString();
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}
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else
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{
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Value *arg_value = m_arg_values.GetValueAtIndex(i);
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void *clang_qual_type = arg_value->GetOpaqueClangQualType ();
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if (clang_qual_type != NULL)
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{
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type_stdstr = ClangASTContext::GetTypeName(clang_qual_type);
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type_string = type_stdstr.c_str();
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}
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else
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{
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errors.Printf("Could not determine type of input value %d.", i);
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return 1;
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}
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}
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expression.append (type_string);
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if (i < num_args - 1)
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expression.append (", ");
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char arg_buf[32];
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args_buffer.append (" ");
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args_buffer.append (type_string);
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snprintf(arg_buf, 31, "arg_%zd", i);
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args_buffer.push_back (' ');
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args_buffer.append (arg_buf);
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args_buffer.append (";\n");
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args_list_buffer.append ("__lldb_fn_data->");
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args_list_buffer.append (arg_buf);
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if (i < num_args - 1)
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args_list_buffer.append (", ");
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}
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expression.append (");\n"); // Close off the function calling prototype.
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expression.append (args_buffer);
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expression.append (" ");
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expression.append (return_type_str);
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expression.append (" return_value;");
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expression.append ("\n };\n struct ");
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expression.append (m_wrapper_struct_name);
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expression.append ("* __lldb_fn_data = (struct ");
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expression.append (m_wrapper_struct_name);
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expression.append (" *) input;\n");
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expression.append (" __lldb_fn_data->return_value = __lldb_fn_data->fn_ptr (");
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expression.append (args_list_buffer);
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expression.append (");\n}\n");
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Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
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if (log)
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log->Printf ("Expression: \n\n%s\n\n", expression.c_str());
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// Okay, now compile this expression:
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num_errors = ParseBareExpression (expression.c_str(), errors);
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m_compiled = (num_errors == 0);
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if (m_compiled)
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{
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using namespace clang;
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CompilerInstance *compiler_instance = GetCompilerInstance();
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ASTContext &ast_context = compiler_instance->getASTContext();
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DeclarationName wrapper_func_name(&ast_context.Idents.get(m_wrapper_function_name.c_str()));
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FunctionDecl::lookup_result func_lookup = ast_context.getTranslationUnitDecl()->lookup(wrapper_func_name);
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if (func_lookup.first == func_lookup.second)
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return false;
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FunctionDecl *wrapper_func = dyn_cast<FunctionDecl> (*(func_lookup.first));
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if (!wrapper_func)
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return false;
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DeclarationName wrapper_struct_name(&ast_context.Idents.get(m_wrapper_struct_name.c_str()));
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RecordDecl::lookup_result struct_lookup = wrapper_func->lookup(wrapper_struct_name);
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if (struct_lookup.first == struct_lookup.second)
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return false;
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RecordDecl *wrapper_struct = dyn_cast<RecordDecl>(*(struct_lookup.first));
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if (!wrapper_struct)
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return false;
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m_struct_layout = &ast_context.getASTRecordLayout (wrapper_struct);
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if (!m_struct_layout)
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{
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m_compiled = false;
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return 1;
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}
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m_return_offset = m_struct_layout->getFieldOffset(m_struct_layout->getFieldCount() - 1);
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m_return_size = (m_struct_layout->getDataSize() - m_return_offset)/8;
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}
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}
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return num_errors;
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}
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bool
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ClangFunction::WriteFunctionWrapper (ExecutionContext &exc_context, Stream &errors)
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{
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Process *process = exc_context.process;
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if (process == NULL)
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return false;
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if (!m_JITted)
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{
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// Next we should JIT it and insert the result into the target program.
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if (!JITFunction (exc_context, m_wrapper_function_name.c_str()))
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return false;
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if (!WriteJITCode (exc_context))
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return false;
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m_JITted = true;
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}
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// Next get the call address for the function:
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m_wrapper_function_addr = GetFunctionAddress (m_wrapper_function_name.c_str());
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if (m_wrapper_function_addr == LLDB_INVALID_ADDRESS)
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return false;
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return true;
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}
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bool
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ClangFunction::WriteFunctionArguments (ExecutionContext &exc_context, lldb::addr_t &args_addr_ref, Stream &errors)
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{
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return WriteFunctionArguments(exc_context, args_addr_ref, m_function_addr, m_arg_values, errors);
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}
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// FIXME: Assure that the ValueList we were passed in is consistent with the one that defined this function.
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bool
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ClangFunction::WriteFunctionArguments (ExecutionContext &exc_context, lldb::addr_t &args_addr_ref, Address function_address, ValueList &arg_values, Stream &errors)
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{
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// Otherwise, allocate space for the argument passing struct, and write it.
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// We use the information in the expression parser AST to
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// figure out how to do this...
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// We should probably transcode this in this object so we can ditch the compiler instance
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// and all its associated data, and just keep the JITTed bytes.
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Error error;
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using namespace clang;
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ExecutionResults return_value = eExecutionSetupError;
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Process *process = exc_context.process;
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if (process == NULL)
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return return_value;
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uint64_t struct_size = m_struct_layout->getSize()/8; // Clang returns sizes in bytes.
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if (args_addr_ref == LLDB_INVALID_ADDRESS)
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{
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args_addr_ref = process->AllocateMemory(struct_size, lldb::ePermissionsReadable|lldb::ePermissionsWritable, error);
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if (args_addr_ref == LLDB_INVALID_ADDRESS)
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return false;
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m_wrapper_args_addrs.push_back (args_addr_ref);
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}
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else
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{
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// Make sure this is an address that we've already handed out.
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if (find (m_wrapper_args_addrs.begin(), m_wrapper_args_addrs.end(), args_addr_ref) == m_wrapper_args_addrs.end())
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{
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return false;
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}
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}
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// FIXME: This is fake, and just assumes that it matches that architecture.
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// Make a data extractor and put the address into the right byte order & size.
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uint64_t fun_addr = function_address.GetLoadAddress(exc_context.process);
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int first_offset = m_struct_layout->getFieldOffset(0)/8;
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process->WriteMemory(args_addr_ref + first_offset, &fun_addr, 8, error);
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// FIXME: We will need to extend this for Variadic functions.
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Error value_error;
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size_t num_args = arg_values.GetSize();
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if (num_args != m_arg_values.GetSize())
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{
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errors.Printf ("Wrong number of arguments - was: %d should be: %d", num_args, m_arg_values.GetSize());
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return false;
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}
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2010-07-10 04:39:50 +08:00
|
|
|
for (size_t i = 0; i < num_args; i++)
|
2010-06-09 00:52:24 +08:00
|
|
|
{
|
|
|
|
// FIXME: We should sanity check sizes.
|
|
|
|
|
|
|
|
int offset = m_struct_layout->getFieldOffset(i+1)/8; // Clang sizes are in bytes.
|
|
|
|
Value *arg_value = arg_values.GetValueAtIndex(i);
|
|
|
|
|
|
|
|
// FIXME: For now just do scalars:
|
|
|
|
|
|
|
|
// Special case: if it's a pointer, don't do anything (the ABI supports passing cstrings)
|
|
|
|
|
|
|
|
if (arg_value->GetValueType() == Value::eValueTypeHostAddress &&
|
|
|
|
arg_value->GetContextType() == Value::eContextTypeOpaqueClangQualType &&
|
|
|
|
ClangASTContext::IsPointerType(arg_value->GetValueOpaqueClangQualType()))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
const Scalar &arg_scalar = arg_value->ResolveValue(&exc_context, m_clang_ast_context->getASTContext());
|
|
|
|
|
|
|
|
int byte_size = arg_scalar.GetByteSize();
|
|
|
|
std::vector<uint8_t> buffer;
|
|
|
|
buffer.resize(byte_size);
|
|
|
|
DataExtractor value_data;
|
|
|
|
arg_scalar.GetData (value_data);
|
2010-07-21 06:52:08 +08:00
|
|
|
value_data.ExtractBytes(0, byte_size, process->GetByteOrder(), &buffer.front());
|
|
|
|
process->WriteMemory(args_addr_ref + offset, &buffer.front(), byte_size, error);
|
2010-06-09 00:52:24 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool
|
|
|
|
ClangFunction::InsertFunction (ExecutionContext &exc_context, lldb::addr_t &args_addr_ref, Stream &errors)
|
|
|
|
{
|
|
|
|
using namespace clang;
|
|
|
|
|
|
|
|
if (CompileFunction(errors) != 0)
|
|
|
|
return false;
|
|
|
|
if (!WriteFunctionWrapper(exc_context, errors))
|
|
|
|
return false;
|
|
|
|
if (!WriteFunctionArguments(exc_context, args_addr_ref, errors))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
|
|
|
|
if (log)
|
2010-07-10 04:39:50 +08:00
|
|
|
log->Printf ("Call Address: 0x%llx Struct Address: 0x%llx.\n", m_wrapper_function_addr, args_addr_ref);
|
2010-06-09 00:52:24 +08:00
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
ThreadPlan *
|
|
|
|
ClangFunction::GetThreadPlanToCallFunction (ExecutionContext &exc_context, lldb::addr_t &args_addr, Stream &errors, bool stop_others, bool discard_on_error)
|
|
|
|
{
|
|
|
|
// FIXME: Use the errors Stream for better error reporting.
|
|
|
|
|
|
|
|
Process *process = exc_context.process;
|
|
|
|
|
|
|
|
if (process == NULL)
|
|
|
|
{
|
|
|
|
errors.Printf("Can't call a function without a process.");
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Okay, now run the function:
|
|
|
|
|
2010-07-10 04:39:50 +08:00
|
|
|
Address wrapper_address (NULL, m_wrapper_function_addr);
|
2010-06-09 00:52:24 +08:00
|
|
|
ThreadPlan *new_plan = new ThreadPlanCallFunction (*exc_context.thread,
|
|
|
|
wrapper_address,
|
|
|
|
args_addr,
|
|
|
|
stop_others, discard_on_error);
|
|
|
|
return new_plan;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool
|
|
|
|
ClangFunction::FetchFunctionResults (ExecutionContext &exc_context, lldb::addr_t args_addr, Value &ret_value)
|
|
|
|
{
|
|
|
|
// Read the return value - it is the last field in the struct:
|
|
|
|
// FIXME: How does clang tell us there's no return value? We need to handle that case.
|
|
|
|
|
|
|
|
std::vector<uint8_t> data_buffer;
|
|
|
|
data_buffer.resize(m_return_size);
|
|
|
|
Process *process = exc_context.process;
|
|
|
|
Error error;
|
2010-07-21 06:52:08 +08:00
|
|
|
size_t bytes_read = process->ReadMemory(args_addr + m_return_offset/8, &data_buffer.front(), m_return_size, error);
|
2010-06-09 00:52:24 +08:00
|
|
|
|
|
|
|
if (bytes_read == 0)
|
|
|
|
{
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bytes_read < m_return_size)
|
|
|
|
return false;
|
|
|
|
|
2010-07-21 06:52:08 +08:00
|
|
|
DataExtractor data(&data_buffer.front(), m_return_size, process->GetByteOrder(), process->GetAddressByteSize());
|
2010-06-09 00:52:24 +08:00
|
|
|
// FIXME: Assuming an integer scalar for now:
|
|
|
|
|
|
|
|
uint32_t offset = 0;
|
|
|
|
uint64_t return_integer = data.GetMaxU64(&offset, m_return_size);
|
|
|
|
|
|
|
|
ret_value.SetContext (Value::eContextTypeOpaqueClangQualType, m_function_return_qual_type);
|
|
|
|
ret_value.SetValueType(Value::eValueTypeScalar);
|
|
|
|
ret_value.GetScalar() = return_integer;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
ClangFunction::DeallocateFunctionResults (ExecutionContext &exc_context, lldb::addr_t args_addr)
|
|
|
|
{
|
|
|
|
std::list<lldb::addr_t>::iterator pos;
|
|
|
|
pos = std::find(m_wrapper_args_addrs.begin(), m_wrapper_args_addrs.end(), args_addr);
|
|
|
|
if (pos != m_wrapper_args_addrs.end())
|
|
|
|
m_wrapper_args_addrs.erase(pos);
|
|
|
|
|
|
|
|
exc_context.process->DeallocateMemory(args_addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
ClangFunction::ExecutionResults
|
|
|
|
ClangFunction::ExecuteFunction(ExecutionContext &exc_context, Stream &errors, Value &results)
|
|
|
|
{
|
|
|
|
return ExecuteFunction (exc_context, errors, 1000, true, results);
|
|
|
|
}
|
|
|
|
|
|
|
|
ClangFunction::ExecutionResults
|
|
|
|
ClangFunction::ExecuteFunction(ExecutionContext &exc_context, Stream &errors, bool stop_others, Value &results)
|
|
|
|
{
|
|
|
|
return ExecuteFunction (exc_context, NULL, errors, stop_others, NULL, false, results);
|
|
|
|
}
|
|
|
|
|
|
|
|
ClangFunction::ExecutionResults
|
|
|
|
ClangFunction::ExecuteFunction(
|
|
|
|
ExecutionContext &exc_context,
|
|
|
|
Stream &errors,
|
|
|
|
uint32_t single_thread_timeout_usec,
|
|
|
|
bool try_all_threads,
|
|
|
|
Value &results)
|
|
|
|
{
|
|
|
|
return ExecuteFunction (exc_context, NULL, errors, true, single_thread_timeout_usec, try_all_threads, results);
|
|
|
|
}
|
|
|
|
|
|
|
|
ClangFunction::ExecutionResults
|
|
|
|
ClangFunction::ExecuteFunction(
|
|
|
|
ExecutionContext &exc_context,
|
|
|
|
lldb::addr_t *args_addr_ptr,
|
|
|
|
Stream &errors,
|
|
|
|
bool stop_others,
|
|
|
|
uint32_t single_thread_timeout_usec,
|
|
|
|
bool try_all_threads,
|
|
|
|
Value &results)
|
|
|
|
{
|
|
|
|
using namespace clang;
|
|
|
|
ExecutionResults return_value = eExecutionSetupError;
|
|
|
|
Process *process = exc_context.process;
|
|
|
|
|
|
|
|
lldb::addr_t args_addr;
|
|
|
|
|
|
|
|
if (args_addr_ptr != NULL)
|
|
|
|
args_addr = *args_addr_ptr;
|
|
|
|
else
|
|
|
|
args_addr = LLDB_INVALID_ADDRESS;
|
|
|
|
|
|
|
|
if (CompileFunction(errors) != 0)
|
|
|
|
return eExecutionSetupError;
|
|
|
|
|
|
|
|
if (args_addr == LLDB_INVALID_ADDRESS)
|
|
|
|
{
|
|
|
|
if (!InsertFunction(exc_context, args_addr, errors))
|
|
|
|
return eExecutionSetupError;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
lldb::ThreadPlanSP call_plan_sp(GetThreadPlanToCallFunction(exc_context, args_addr, errors, stop_others, false));
|
|
|
|
|
|
|
|
ThreadPlanCallFunction *call_plan_ptr = static_cast<ThreadPlanCallFunction *> (call_plan_sp.get());
|
|
|
|
|
|
|
|
if (args_addr_ptr != NULL)
|
|
|
|
*args_addr_ptr = args_addr;
|
|
|
|
|
|
|
|
if (call_plan_sp == NULL)
|
|
|
|
return return_value;
|
|
|
|
|
|
|
|
call_plan_sp->SetPrivate(true);
|
|
|
|
exc_context.thread->QueueThreadPlan(call_plan_sp, true);
|
|
|
|
|
|
|
|
// We need to call the function synchronously, so spin waiting for it to return.
|
|
|
|
// If we get interrupted while executing, we're going to lose our context, and
|
|
|
|
// won't be able to gather the result at this point.
|
|
|
|
|
|
|
|
TimeValue* timeout_ptr = NULL;
|
|
|
|
TimeValue real_timeout;
|
|
|
|
if (single_thread_timeout_usec != 0)
|
|
|
|
{
|
|
|
|
real_timeout = TimeValue::Now();
|
|
|
|
real_timeout.OffsetWithMicroSeconds(single_thread_timeout_usec);
|
|
|
|
timeout_ptr = &real_timeout;
|
|
|
|
}
|
|
|
|
process->Resume ();
|
|
|
|
|
|
|
|
|
|
|
|
while (1)
|
|
|
|
{
|
|
|
|
lldb::EventSP event_sp;
|
|
|
|
|
|
|
|
// Now wait for the process to stop again:
|
|
|
|
// FIXME: Probably want a time out.
|
|
|
|
lldb::StateType stop_state = process->WaitForStateChangedEvents (timeout_ptr, event_sp);
|
|
|
|
if (stop_state == lldb::eStateInvalid && timeout_ptr != NULL)
|
|
|
|
{
|
|
|
|
// Right now this is the only way to tell we've timed out...
|
|
|
|
// We should interrupt the process here...
|
|
|
|
// Not really sure what to do if Halt fails here...
|
|
|
|
Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
|
|
|
|
if (log)
|
|
|
|
log->Printf ("Running function with timeout: %d timed out, trying with all threads enabled.", single_thread_timeout_usec);
|
|
|
|
|
|
|
|
if (process->Halt().Success())
|
|
|
|
{
|
|
|
|
timeout_ptr = NULL;
|
|
|
|
|
2010-07-14 08:18:15 +08:00
|
|
|
stop_state = process->WaitForStateChangedEvents (timeout_ptr, event_sp);
|
2010-06-09 00:52:24 +08:00
|
|
|
if (stop_state == lldb::eStateInvalid)
|
|
|
|
{
|
|
|
|
errors.Printf ("Got an invalid stop state after halt.");
|
|
|
|
}
|
|
|
|
else if (stop_state != lldb::eStateStopped)
|
|
|
|
{
|
|
|
|
StreamString s;
|
|
|
|
event_sp->Dump (&s);
|
|
|
|
|
|
|
|
errors.Printf("Didn't get a stopped event after Halting the target, got: \"%s\"", s.GetData());
|
|
|
|
}
|
|
|
|
|
|
|
|
if (try_all_threads)
|
|
|
|
{
|
|
|
|
// Between the time that we got the timeout and the time we halted, but target
|
|
|
|
// might have actually completed the plan. If so, we're done.
|
|
|
|
if (exc_context.thread->IsThreadPlanDone (call_plan_sp.get()))
|
|
|
|
{
|
|
|
|
return_value = eExecutionCompleted;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
call_plan_ptr->SetStopOthers (false);
|
|
|
|
process->Resume();
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
return eExecutionInterrupted;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (stop_state == lldb::eStateRunning || stop_state == lldb::eStateStepping)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (exc_context.thread->IsThreadPlanDone (call_plan_sp.get()))
|
|
|
|
{
|
|
|
|
return_value = eExecutionCompleted;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else if (exc_context.thread->WasThreadPlanDiscarded (call_plan_sp.get()))
|
|
|
|
{
|
|
|
|
return_value = eExecutionDiscarded;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
return_value = eExecutionInterrupted;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (return_value != eExecutionCompleted)
|
|
|
|
return return_value;
|
|
|
|
|
|
|
|
FetchFunctionResults(exc_context, args_addr, results);
|
|
|
|
|
|
|
|
if (args_addr_ptr == NULL)
|
|
|
|
DeallocateFunctionResults(exc_context, args_addr);
|
|
|
|
|
|
|
|
return eExecutionCompleted;
|
|
|
|
}
|
|
|
|
|
|
|
|
ClangFunction::ExecutionResults
|
|
|
|
ClangFunction::ExecuteFunctionWithABI(ExecutionContext &exc_context, Stream &errors, Value &results)
|
|
|
|
{
|
|
|
|
// FIXME: Use the errors Stream for better error reporting.
|
|
|
|
using namespace clang;
|
|
|
|
ExecutionResults return_value = eExecutionSetupError;
|
|
|
|
|
|
|
|
Process *process = exc_context.process;
|
|
|
|
|
|
|
|
if (process == NULL)
|
|
|
|
{
|
|
|
|
errors.Printf("Can't call a function without a process.");
|
|
|
|
return return_value;
|
|
|
|
}
|
|
|
|
|
|
|
|
//unsigned int num_args = m_arg_values.GetSize();
|
|
|
|
//unsigned int arg_index;
|
|
|
|
|
|
|
|
//for (arg_index = 0; arg_index < num_args; ++arg_index)
|
|
|
|
// m_arg_values.GetValueAtIndex(arg_index)->ResolveValue(&exc_context, GetASTContext());
|
|
|
|
|
|
|
|
ThreadPlan *call_plan = exc_context.thread->QueueThreadPlanForCallFunction (false,
|
|
|
|
m_function_addr,
|
|
|
|
m_arg_values,
|
|
|
|
true);
|
|
|
|
if (call_plan == NULL)
|
|
|
|
return return_value;
|
|
|
|
|
|
|
|
call_plan->SetPrivate(true);
|
|
|
|
|
|
|
|
// We need to call the function synchronously, so spin waiting for it to return.
|
|
|
|
// If we get interrupted while executing, we're going to lose our context, and
|
|
|
|
// won't be able to gather the result at this point.
|
|
|
|
|
|
|
|
process->Resume ();
|
|
|
|
|
|
|
|
while (1)
|
|
|
|
{
|
|
|
|
lldb::EventSP event_sp;
|
|
|
|
|
|
|
|
// Now wait for the process to stop again:
|
|
|
|
// FIXME: Probably want a time out.
|
|
|
|
lldb::StateType stop_state = process->WaitForStateChangedEvents (NULL, event_sp);
|
|
|
|
if (stop_state == lldb::eStateRunning || stop_state == lldb::eStateStepping)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (exc_context.thread->IsThreadPlanDone (call_plan))
|
|
|
|
{
|
|
|
|
return_value = eExecutionCompleted;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else if (exc_context.thread->WasThreadPlanDiscarded (call_plan))
|
|
|
|
{
|
|
|
|
return_value = eExecutionDiscarded;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
return_value = eExecutionInterrupted;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
return eExecutionCompleted;
|
|
|
|
}
|