1 | //===-- ThreadFreeBSDKernel.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 "ThreadFreeBSDKernel.h" |
10 | |
11 | #include "lldb/Target/Unwind.h" |
12 | #include "lldb/Utility/Log.h" |
13 | |
14 | #include "Plugins/Process/Utility/RegisterContextFreeBSD_i386.h" |
15 | #include "Plugins/Process/Utility/RegisterContextFreeBSD_x86_64.h" |
16 | #include "Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h" |
17 | #include "ProcessFreeBSDKernel.h" |
18 | #include "RegisterContextFreeBSDKernel_arm64.h" |
19 | #include "RegisterContextFreeBSDKernel_i386.h" |
20 | #include "RegisterContextFreeBSDKernel_x86_64.h" |
21 | |
22 | using namespace lldb; |
23 | using namespace lldb_private; |
24 | |
25 | ThreadFreeBSDKernel::ThreadFreeBSDKernel(Process &process, lldb::tid_t tid, |
26 | lldb::addr_t pcb_addr, |
27 | std::string thread_name) |
28 | : Thread(process, tid), m_thread_name(std::move(thread_name)), |
29 | m_pcb_addr(pcb_addr) {} |
30 | |
31 | ThreadFreeBSDKernel::~ThreadFreeBSDKernel() {} |
32 | |
33 | void ThreadFreeBSDKernel::RefreshStateAfterStop() {} |
34 | |
35 | lldb::RegisterContextSP ThreadFreeBSDKernel::GetRegisterContext() { |
36 | if (!m_reg_context_sp) |
37 | m_reg_context_sp = CreateRegisterContextForFrame(frame: nullptr); |
38 | return m_reg_context_sp; |
39 | } |
40 | |
41 | lldb::RegisterContextSP |
42 | ThreadFreeBSDKernel::CreateRegisterContextForFrame(StackFrame *frame) { |
43 | RegisterContextSP reg_ctx_sp; |
44 | uint32_t concrete_frame_idx = 0; |
45 | |
46 | if (frame) |
47 | concrete_frame_idx = frame->GetConcreteFrameIndex(); |
48 | |
49 | if (concrete_frame_idx == 0) { |
50 | if (m_thread_reg_ctx_sp) |
51 | return m_thread_reg_ctx_sp; |
52 | |
53 | ProcessFreeBSDKernel *process = |
54 | static_cast<ProcessFreeBSDKernel *>(GetProcess().get()); |
55 | ArchSpec arch = process->GetTarget().GetArchitecture(); |
56 | |
57 | switch (arch.GetMachine()) { |
58 | case llvm::Triple::aarch64: |
59 | m_thread_reg_ctx_sp = |
60 | std::make_shared<RegisterContextFreeBSDKernel_arm64>( |
61 | args&: *this, args: std::make_unique<RegisterInfoPOSIX_arm64>(args&: arch, args: 0), |
62 | args&: m_pcb_addr); |
63 | break; |
64 | case llvm::Triple::x86: |
65 | m_thread_reg_ctx_sp = std::make_shared<RegisterContextFreeBSDKernel_i386>( |
66 | args&: *this, args: new RegisterContextFreeBSD_i386(arch), args&: m_pcb_addr); |
67 | break; |
68 | case llvm::Triple::x86_64: |
69 | m_thread_reg_ctx_sp = |
70 | std::make_shared<RegisterContextFreeBSDKernel_x86_64>( |
71 | args&: *this, args: new RegisterContextFreeBSD_x86_64(arch), args&: m_pcb_addr); |
72 | break; |
73 | default: |
74 | assert(false && "Unsupported architecture passed to ThreadFreeBSDKernel"); |
75 | break; |
76 | } |
77 | |
78 | reg_ctx_sp = m_thread_reg_ctx_sp; |
79 | } else { |
80 | reg_ctx_sp = GetUnwinder().CreateRegisterContextForFrame(frame); |
81 | } |
82 | return reg_ctx_sp; |
83 | } |
84 | |
85 | bool ThreadFreeBSDKernel::CalculateStopInfo() { return false; } |
86 |