1 //===-- ThreadPlanCallFunctionUsingABI.cpp --------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "lldb/Target/ThreadPlanCallFunctionUsingABI.h"
10 #include "lldb/Core/Address.h"
11 #include "lldb/Target/Process.h"
12 #include "lldb/Target/RegisterContext.h"
13 #include "lldb/Target/Target.h"
14 #include "lldb/Target/Thread.h"
15 #include "lldb/Utility/Log.h"
16 #include "lldb/Utility/Stream.h"
17 
18 using namespace lldb;
19 using namespace lldb_private;
20 
21 // ThreadPlanCallFunctionUsingABI: Plan to call a single function using the ABI
22 // instead of JIT
23 ThreadPlanCallFunctionUsingABI::ThreadPlanCallFunctionUsingABI(
24     Thread &thread, const Address &function, llvm::Type &prototype,
25     llvm::Type &return_type, llvm::ArrayRef<ABI::CallArgument> args,
26     const EvaluateExpressionOptions &options)
27     : ThreadPlanCallFunction(thread, function, options),
28       m_return_type(return_type) {
29   lldb::addr_t start_load_addr = LLDB_INVALID_ADDRESS;
30   lldb::addr_t function_load_addr = LLDB_INVALID_ADDRESS;
31   ABI *abi = nullptr;
32 
33   if (!ConstructorSetup(thread, abi, start_load_addr, function_load_addr))
34     return;
35 
36   if (!abi->PrepareTrivialCall(thread, m_function_sp, function_load_addr,
37                                start_load_addr, prototype, args))
38     return;
39 
40   ReportRegisterState("ABI Function call was set up.  Register state was:");
41 
42   m_valid = true;
43 }
44 
45 ThreadPlanCallFunctionUsingABI::~ThreadPlanCallFunctionUsingABI() = default;
46 
47 void ThreadPlanCallFunctionUsingABI::GetDescription(Stream *s,
48                                                     DescriptionLevel level) {
49   if (level == eDescriptionLevelBrief) {
50     s->Printf("Function call thread plan using ABI instead of JIT");
51   } else {
52     s->Printf("Thread plan to call 0x%" PRIx64 " using ABI instead of JIT",
53               m_function_addr.GetLoadAddress(&GetTarget()));
54   }
55 }
56 
57 void ThreadPlanCallFunctionUsingABI::SetReturnValue() {
58   const ABI *abi = m_process.GetABI().get();
59 
60   // Ask the abi for the return value
61   if (abi) {
62     const bool persistent = false;
63     m_return_valobj_sp =
64         abi->GetReturnValueObject(GetThread(), m_return_type, persistent);
65   }
66 }
67