1 //===-- RegisterContextPOSIXCore_s390x.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_s390x.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_s390x::RegisterContextCorePOSIX_s390x( 20 Thread &thread, RegisterInfoInterface *register_info, 21 const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes) 22 : RegisterContextPOSIX_s390x(thread, 0, register_info) { 23 m_gpr_buffer = std::make_shared<DataBufferHeap>(gpregset.GetDataStart(), 24 gpregset.GetByteSize()); 25 m_gpr.SetData(m_gpr_buffer); 26 m_gpr.SetByteOrder(gpregset.GetByteOrder()); 27 28 DataExtractor fpregset = getRegset( 29 notes, register_info->GetTargetArchitecture().GetTriple(), FPR_Desc); 30 m_fpr_buffer = std::make_shared<DataBufferHeap>(fpregset.GetDataStart(), 31 fpregset.GetByteSize()); 32 m_fpr.SetData(m_fpr_buffer); 33 m_fpr.SetByteOrder(fpregset.GetByteOrder()); 34 } 35 36 RegisterContextCorePOSIX_s390x::~RegisterContextCorePOSIX_s390x() = default; 37 38 bool RegisterContextCorePOSIX_s390x::ReadGPR() { return true; } 39 40 bool RegisterContextCorePOSIX_s390x::ReadFPR() { return true; } 41 42 bool RegisterContextCorePOSIX_s390x::WriteGPR() { 43 assert(0); 44 return false; 45 } 46 47 bool RegisterContextCorePOSIX_s390x::WriteFPR() { 48 assert(0); 49 return false; 50 } 51 52 bool RegisterContextCorePOSIX_s390x::ReadRegister(const RegisterInfo *reg_info, 53 RegisterValue &value) { 54 const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB]; 55 if (reg == LLDB_INVALID_REGNUM) 56 return false; 57 58 if (IsGPR(reg)) { 59 lldb::offset_t offset = reg_info->byte_offset; 60 uint64_t v = m_gpr.GetMaxU64(&offset, reg_info->byte_size); 61 if (offset == reg_info->byte_offset + reg_info->byte_size) { 62 value.SetUInt(v, reg_info->byte_size); 63 return true; 64 } 65 } 66 67 if (IsFPR(reg)) { 68 lldb::offset_t offset = reg_info->byte_offset; 69 uint64_t v = m_fpr.GetMaxU64(&offset, reg_info->byte_size); 70 if (offset == reg_info->byte_offset + reg_info->byte_size) { 71 value.SetUInt(v, reg_info->byte_size); 72 return true; 73 } 74 } 75 76 return false; 77 } 78 79 bool RegisterContextCorePOSIX_s390x::ReadAllRegisterValues( 80 lldb::WritableDataBufferSP &data_sp) { 81 return false; 82 } 83 84 bool RegisterContextCorePOSIX_s390x::WriteRegister(const RegisterInfo *reg_info, 85 const RegisterValue &value) { 86 return false; 87 } 88 89 bool RegisterContextCorePOSIX_s390x::WriteAllRegisterValues( 90 const lldb::DataBufferSP &data_sp) { 91 return false; 92 } 93 94 bool RegisterContextCorePOSIX_s390x::HardwareSingleStep(bool enable) { 95 return false; 96 } 97