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
ThreadPlanCallFunctionUsingABI(Thread & thread,const Address & function,llvm::Type & prototype,llvm::Type & return_type,llvm::ArrayRef<ABI::CallArgument> args,const EvaluateExpressionOptions & options)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
GetDescription(Stream * s,DescriptionLevel level)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
SetReturnValue()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