ThreadPlanCallFunctionUsingABI.cpp revision 288943 
1//===-- ThreadPlanCallFunctionUsingABI.cpp ------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "lldb/Target/ThreadPlanCallFunctionUsingABI.h"
11
12// C Includes
13// C++ Includes
14// Other libraries and framework includes
15
16// Project includes
17#include "lldb/Core/Address.h"
18#include "lldb/Core/Log.h"
19#include "lldb/Core/Stream.h"
20#include "lldb/Target/Process.h"
21#include "lldb/Target/RegisterContext.h"
22#include "lldb/Target/Target.h"
23#include "lldb/Target/Thread.h"
24
25using namespace lldb;
26using namespace lldb_private;
27
28//--------------------------------------------------------------------------------------------
29// ThreadPlanCallFunctionUsingABI: Plan to call a single function using the ABI instead of JIT
30//-------------------------------------------------------------------------------------------
31ThreadPlanCallFunctionUsingABI::ThreadPlanCallFunctionUsingABI (Thread &thread,
32                                                          const Address &function,
33                                                          llvm::Type &prototype,
34                                                          llvm::Type &return_type,
35                                                          llvm::ArrayRef<ABI::CallArgument> args,
36                                                          const EvaluateExpressionOptions &options) :
37     ThreadPlanCallFunction(thread,function,options),
38     m_return_type(return_type)
39{
40    lldb::addr_t start_load_addr = LLDB_INVALID_ADDRESS;
41    lldb::addr_t function_load_addr = LLDB_INVALID_ADDRESS;
42    ABI *abi = nullptr;
43
44    if (!ConstructorSetup(thread, abi, start_load_addr, function_load_addr))
45        return;
46
47    if (!abi->PrepareTrivialCall(thread,
48        m_function_sp,
49        function_load_addr,
50        start_load_addr,
51        prototype,
52        args))
53        return;
54
55    ReportRegisterState("ABI Function call was set up.  Register state was:");
56
57    m_valid = true;
58}
59
60ThreadPlanCallFunctionUsingABI::~ThreadPlanCallFunctionUsingABI()
61{
62
63}
64
65void
66ThreadPlanCallFunctionUsingABI::GetDescription(Stream *s, DescriptionLevel level)
67{
68    if (level == eDescriptionLevelBrief)
69    {
70        s->Printf("Function call thread plan using ABI instead of JIT");
71    }
72    else
73    {
74        TargetSP target_sp(m_thread.CalculateTarget());
75        s->Printf("Thread plan to call 0x%" PRIx64" using ABI instead of JIT", m_function_addr.GetLoadAddress(target_sp.get()));
76    }
77}
78
79void
80ThreadPlanCallFunctionUsingABI::SetReturnValue()
81{
82    ProcessSP process_sp(m_thread.GetProcess());
83    const ABI *abi = process_sp ? process_sp->GetABI().get() : NULL;
84
85    // Ask the abi for the return value
86    if (abi)
87    {
88        const bool persistent = false;
89        m_return_valobj_sp = abi->GetReturnValueObject(m_thread, m_return_type, persistent);
90    }
91}
92