| //===-- NativeRegisterContextFreeBSD_mips64.cpp ---------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #if defined(__mips64__) |
| |
| #include "NativeRegisterContextFreeBSD_mips64.h" |
| |
| #include "lldb/Utility/DataBufferHeap.h" |
| #include "lldb/Utility/RegisterValue.h" |
| #include "lldb/Utility/Status.h" |
| |
| #include "Plugins/Process/FreeBSD/NativeProcessFreeBSD.h" |
| #include "Plugins/Process/Utility/lldb-mips-freebsd-register-enums.h" |
| |
| // clang-format off |
| #include <sys/param.h> |
| #include <sys/ptrace.h> |
| #include <sys/types.h> |
| // clang-format on |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace lldb_private::process_freebsd; |
| |
| NativeRegisterContextFreeBSD * |
| NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD( |
| const ArchSpec &target_arch, NativeThreadProtocol &native_thread) { |
| return new NativeRegisterContextFreeBSD_mips64(target_arch, native_thread); |
| } |
| |
| NativeRegisterContextFreeBSD_mips64::NativeRegisterContextFreeBSD_mips64( |
| const ArchSpec &target_arch, NativeThreadProtocol &native_thread) |
| : NativeRegisterContextRegisterInfo( |
| native_thread, new RegisterContextFreeBSD_mips64(target_arch)) {} |
| |
| RegisterContextFreeBSD_mips64 & |
| NativeRegisterContextFreeBSD_mips64::GetRegisterInfo() const { |
| return static_cast<RegisterContextFreeBSD_mips64 &>( |
| *m_register_info_interface_up); |
| } |
| |
| uint32_t NativeRegisterContextFreeBSD_mips64::GetRegisterSetCount() const { |
| return GetRegisterInfo().GetRegisterSetCount(); |
| } |
| |
| const RegisterSet * |
| NativeRegisterContextFreeBSD_mips64::GetRegisterSet(uint32_t set_index) const { |
| return GetRegisterInfo().GetRegisterSet(set_index); |
| } |
| |
| uint32_t NativeRegisterContextFreeBSD_mips64::GetUserRegisterCount() const { |
| uint32_t count = 0; |
| for (uint32_t set_index = 0; set_index < GetRegisterSetCount(); ++set_index) |
| count += GetRegisterSet(set_index)->num_registers; |
| return count; |
| } |
| |
| llvm::Optional<NativeRegisterContextFreeBSD_mips64::RegSetKind> |
| NativeRegisterContextFreeBSD_mips64::GetSetForNativeRegNum( |
| uint32_t reg_num) const { |
| switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) { |
| case llvm::Triple::mips64: |
| if (reg_num >= k_first_gpr_mips64 && reg_num <= k_last_gpr_mips64) |
| return GPRegSet; |
| if (reg_num >= k_first_fpr_mips64 && reg_num <= k_last_fpr_mips64) |
| return FPRegSet; |
| break; |
| default: |
| llvm_unreachable("Unhandled target architecture."); |
| } |
| |
| llvm_unreachable("Register does not belong to any register set"); |
| } |
| |
| Status NativeRegisterContextFreeBSD_mips64::ReadRegisterSet(RegSetKind set) { |
| switch (set) { |
| case GPRegSet: |
| return NativeProcessFreeBSD::PtraceWrapper(PT_GETREGS, m_thread.GetID(), |
| m_reg_data.data()); |
| case FPRegSet: |
| return NativeProcessFreeBSD::PtraceWrapper( |
| PT_GETFPREGS, m_thread.GetID(), |
| m_reg_data.data() + GetRegisterInfo().GetGPRSize()); |
| } |
| llvm_unreachable("NativeRegisterContextFreeBSD_mips64::ReadRegisterSet"); |
| } |
| |
| Status NativeRegisterContextFreeBSD_mips64::WriteRegisterSet(RegSetKind set) { |
| switch (set) { |
| case GPRegSet: |
| return NativeProcessFreeBSD::PtraceWrapper(PT_SETREGS, m_thread.GetID(), |
| m_reg_data.data()); |
| case FPRegSet: |
| return NativeProcessFreeBSD::PtraceWrapper( |
| PT_SETFPREGS, m_thread.GetID(), |
| m_reg_data.data() + GetRegisterInfo().GetGPRSize()); |
| } |
| llvm_unreachable("NativeRegisterContextFreeBSD_mips64::WriteRegisterSet"); |
| } |
| |
| Status |
| NativeRegisterContextFreeBSD_mips64::ReadRegister(const RegisterInfo *reg_info, |
| RegisterValue ®_value) { |
| Status error; |
| |
| if (!reg_info) { |
| error.SetErrorString("reg_info NULL"); |
| return error; |
| } |
| |
| const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB]; |
| |
| if (reg == LLDB_INVALID_REGNUM) |
| return Status("no lldb regnum for %s", reg_info && reg_info->name |
| ? reg_info->name |
| : "<unknown register>"); |
| |
| llvm::Optional<RegSetKind> opt_set = GetSetForNativeRegNum(reg); |
| if (!opt_set) { |
| // This is likely an internal register for lldb use only and should not be |
| // directly queried. |
| error.SetErrorStringWithFormat("register \"%s\" is in unrecognized set", |
| reg_info->name); |
| return error; |
| } |
| |
| RegSetKind set = opt_set.getValue(); |
| error = ReadRegisterSet(set); |
| if (error.Fail()) |
| return error; |
| |
| assert(reg_info->byte_offset + reg_info->byte_size <= m_reg_data.size()); |
| reg_value.SetBytes(m_reg_data.data() + reg_info->byte_offset, |
| reg_info->byte_size, endian::InlHostByteOrder()); |
| return error; |
| } |
| |
| Status NativeRegisterContextFreeBSD_mips64::WriteRegister( |
| const RegisterInfo *reg_info, const RegisterValue ®_value) { |
| Status error; |
| |
| if (!reg_info) |
| return Status("reg_info NULL"); |
| |
| const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB]; |
| |
| if (reg == LLDB_INVALID_REGNUM) |
| return Status("no lldb regnum for %s", reg_info && reg_info->name |
| ? reg_info->name |
| : "<unknown register>"); |
| |
| llvm::Optional<RegSetKind> opt_set = GetSetForNativeRegNum(reg); |
| if (!opt_set) { |
| // This is likely an internal register for lldb use only and should not be |
| // directly queried. |
| error.SetErrorStringWithFormat("register \"%s\" is in unrecognized set", |
| reg_info->name); |
| return error; |
| } |
| |
| RegSetKind set = opt_set.getValue(); |
| error = ReadRegisterSet(set); |
| if (error.Fail()) |
| return error; |
| |
| assert(reg_info->byte_offset + reg_info->byte_size <= m_reg_data.size()); |
| ::memcpy(m_reg_data.data() + reg_info->byte_offset, reg_value.GetBytes(), |
| reg_info->byte_size); |
| |
| return WriteRegisterSet(set); |
| } |
| |
| Status NativeRegisterContextFreeBSD_mips64::ReadAllRegisterValues( |
| lldb::DataBufferSP &data_sp) { |
| Status error; |
| |
| error = ReadRegisterSet(GPRegSet); |
| if (error.Fail()) |
| return error; |
| |
| error = ReadRegisterSet(FPRegSet); |
| if (error.Fail()) |
| return error; |
| |
| data_sp.reset(new DataBufferHeap(m_reg_data.size(), 0)); |
| uint8_t *dst = data_sp->GetBytes(); |
| ::memcpy(dst, m_reg_data.data(), m_reg_data.size()); |
| |
| return error; |
| } |
| |
| Status NativeRegisterContextFreeBSD_mips64::WriteAllRegisterValues( |
| const lldb::DataBufferSP &data_sp) { |
| Status error; |
| |
| if (!data_sp) { |
| error.SetErrorStringWithFormat( |
| "NativeRegisterContextFreeBSD_mips64::%s invalid data_sp provided", |
| __FUNCTION__); |
| return error; |
| } |
| |
| if (data_sp->GetByteSize() != m_reg_data.size()) { |
| error.SetErrorStringWithFormat( |
| "NativeRegisterContextFreeBSD_mips64::%s data_sp contained mismatched " |
| "data size, expected %" PRIu64 ", actual %" PRIu64, |
| __FUNCTION__, m_reg_data.size(), data_sp->GetByteSize()); |
| return error; |
| } |
| |
| uint8_t *src = data_sp->GetBytes(); |
| if (src == nullptr) { |
| error.SetErrorStringWithFormat("NativeRegisterContextFreeBSD_mips64::%s " |
| "DataBuffer::GetBytes() returned a null " |
| "pointer", |
| __FUNCTION__); |
| return error; |
| } |
| ::memcpy(m_reg_data.data(), src, m_reg_data.size()); |
| |
| error = WriteRegisterSet(GPRegSet); |
| if (error.Fail()) |
| return error; |
| |
| return WriteRegisterSet(FPRegSet); |
| } |
| |
| llvm::Error NativeRegisterContextFreeBSD_mips64::CopyHardwareWatchpointsFrom( |
| NativeRegisterContextFreeBSD &source) { |
| return llvm::Error::success(); |
| } |
| |
| #endif // defined (__mips64__) |