1 | //===-- RegisterContextPOSIXCore_powerpc.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 "RegisterContextPOSIXCore_powerpc.h" |
10 | |
11 | #include "lldb/Target/Thread.h" |
12 | #include "lldb/Utility/DataBufferHeap.h" |
13 | #include "lldb/Utility/RegisterValue.h" |
14 | |
15 | #include <memory> |
16 | |
17 | using namespace lldb_private; |
18 | |
19 | RegisterContextCorePOSIX_powerpc::( |
20 | Thread &thread, RegisterInfoInterface *register_info, |
21 | const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes) |
22 | : RegisterContextPOSIX_powerpc(thread, 0, register_info) { |
23 | m_gpr_buffer = std::make_shared<DataBufferHeap>(args: gpregset.GetDataStart(), |
24 | args: gpregset.GetByteSize()); |
25 | m_gpr.SetData(data_sp: m_gpr_buffer); |
26 | m_gpr.SetByteOrder(gpregset.GetByteOrder()); |
27 | |
28 | ArchSpec arch = register_info->GetTargetArchitecture(); |
29 | DataExtractor fpregset = getRegset(Notes: notes, Triple: arch.GetTriple(), RegsetDescs: FPR_Desc); |
30 | m_fpr_buffer = std::make_shared<DataBufferHeap>(args: fpregset.GetDataStart(), |
31 | args: fpregset.GetByteSize()); |
32 | m_fpr.SetData(data_sp: m_fpr_buffer); |
33 | m_fpr.SetByteOrder(fpregset.GetByteOrder()); |
34 | |
35 | DataExtractor vregset = getRegset(Notes: notes, Triple: arch.GetTriple(), RegsetDescs: PPC_VMX_Desc); |
36 | m_vec_buffer = std::make_shared<DataBufferHeap>(args: vregset.GetDataStart(), |
37 | args: vregset.GetByteSize()); |
38 | m_vec.SetData(data_sp: m_vec_buffer); |
39 | m_vec.SetByteOrder(vregset.GetByteOrder()); |
40 | } |
41 | |
42 | RegisterContextCorePOSIX_powerpc::~RegisterContextCorePOSIX_powerpc() = default; |
43 | |
44 | bool RegisterContextCorePOSIX_powerpc::ReadGPR() { return true; } |
45 | |
46 | bool RegisterContextCorePOSIX_powerpc::ReadFPR() { return true; } |
47 | |
48 | bool RegisterContextCorePOSIX_powerpc::ReadVMX() { return true; } |
49 | |
50 | bool RegisterContextCorePOSIX_powerpc::WriteGPR() { |
51 | assert(0); |
52 | return false; |
53 | } |
54 | |
55 | bool RegisterContextCorePOSIX_powerpc::WriteFPR() { |
56 | assert(0); |
57 | return false; |
58 | } |
59 | |
60 | bool RegisterContextCorePOSIX_powerpc::WriteVMX() { |
61 | assert(0); |
62 | return false; |
63 | } |
64 | |
65 | bool RegisterContextCorePOSIX_powerpc::ReadRegister( |
66 | const RegisterInfo *reg_info, RegisterValue &value) { |
67 | lldb::offset_t offset = reg_info->byte_offset; |
68 | if (IsFPR(reg: reg_info->kinds[lldb::eRegisterKindLLDB])) { |
69 | uint64_t v = m_fpr.GetMaxU64(offset_ptr: &offset, byte_size: reg_info->byte_size); |
70 | if (offset == reg_info->byte_offset + reg_info->byte_size) { |
71 | value = v; |
72 | return true; |
73 | } |
74 | } else if (IsVMX(reg: reg_info->kinds[lldb::eRegisterKindLLDB])) { |
75 | uint32_t v[4]; |
76 | offset = m_vec.CopyData(offset, length: reg_info->byte_size, dst: &v); |
77 | if (offset == reg_info->byte_size) { |
78 | value.SetBytes(bytes: v, length: reg_info->byte_size, byte_order: m_vec.GetByteOrder()); |
79 | return true; |
80 | } |
81 | } else { |
82 | uint64_t v = m_gpr.GetMaxU64(offset_ptr: &offset, byte_size: reg_info->byte_size); |
83 | if (offset == reg_info->byte_offset + reg_info->byte_size) { |
84 | if (reg_info->byte_size < sizeof(v)) |
85 | value = (uint32_t)v; |
86 | else |
87 | value = v; |
88 | return true; |
89 | } |
90 | } |
91 | return false; |
92 | } |
93 | |
94 | bool RegisterContextCorePOSIX_powerpc::ReadAllRegisterValues( |
95 | lldb::WritableDataBufferSP &data_sp) { |
96 | return false; |
97 | } |
98 | |
99 | bool RegisterContextCorePOSIX_powerpc::WriteRegister( |
100 | const RegisterInfo *reg_info, const RegisterValue &value) { |
101 | return false; |
102 | } |
103 | |
104 | bool RegisterContextCorePOSIX_powerpc::WriteAllRegisterValues( |
105 | const lldb::DataBufferSP &data_sp) { |
106 | return false; |
107 | } |
108 | |
109 | bool RegisterContextCorePOSIX_powerpc::HardwareSingleStep(bool enable) { |
110 | return false; |
111 | } |
112 | |