//===-- NativeRegisterContextNetBSD_x86_64.cpp ---------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #if defined(__x86_64__) #include "NativeRegisterContextNetBSD_x86_64.h" #include "lldb/Core/RegisterValue.h" #include "lldb/Host/HostInfo.h" #include "lldb/Utility/DataBufferHeap.h" #include "lldb/Utility/Error.h" #include "lldb/Utility/Log.h" #include "Plugins/Process/Utility/RegisterContextNetBSD_x86_64.h" #include using namespace lldb_private; using namespace lldb_private::process_netbsd; // ---------------------------------------------------------------------------- // Private namespace. // ---------------------------------------------------------------------------- namespace { // x86 64-bit general purpose registers. static const uint32_t g_gpr_regnums_x86_64[] = { lldb_rax_x86_64, lldb_rbx_x86_64, lldb_rcx_x86_64, lldb_rdx_x86_64, lldb_rdi_x86_64, lldb_rsi_x86_64, lldb_rbp_x86_64, lldb_rsp_x86_64, lldb_r8_x86_64, lldb_r9_x86_64, lldb_r10_x86_64, lldb_r11_x86_64, lldb_r12_x86_64, lldb_r13_x86_64, lldb_r14_x86_64, lldb_r15_x86_64, lldb_rip_x86_64, lldb_rflags_x86_64, lldb_cs_x86_64, lldb_fs_x86_64, lldb_gs_x86_64, lldb_ss_x86_64, lldb_ds_x86_64, lldb_es_x86_64, lldb_eax_x86_64, lldb_ebx_x86_64, lldb_ecx_x86_64, lldb_edx_x86_64, lldb_edi_x86_64, lldb_esi_x86_64, lldb_ebp_x86_64, lldb_esp_x86_64, lldb_r8d_x86_64, // Low 32 bits or r8 lldb_r9d_x86_64, // Low 32 bits or r9 lldb_r10d_x86_64, // Low 32 bits or r10 lldb_r11d_x86_64, // Low 32 bits or r11 lldb_r12d_x86_64, // Low 32 bits or r12 lldb_r13d_x86_64, // Low 32 bits or r13 lldb_r14d_x86_64, // Low 32 bits or r14 lldb_r15d_x86_64, // Low 32 bits or r15 lldb_ax_x86_64, lldb_bx_x86_64, lldb_cx_x86_64, lldb_dx_x86_64, lldb_di_x86_64, lldb_si_x86_64, lldb_bp_x86_64, lldb_sp_x86_64, lldb_r8w_x86_64, // Low 16 bits or r8 lldb_r9w_x86_64, // Low 16 bits or r9 lldb_r10w_x86_64, // Low 16 bits or r10 lldb_r11w_x86_64, // Low 16 bits or r11 lldb_r12w_x86_64, // Low 16 bits or r12 lldb_r13w_x86_64, // Low 16 bits or r13 lldb_r14w_x86_64, // Low 16 bits or r14 lldb_r15w_x86_64, // Low 16 bits or r15 lldb_ah_x86_64, lldb_bh_x86_64, lldb_ch_x86_64, lldb_dh_x86_64, lldb_al_x86_64, lldb_bl_x86_64, lldb_cl_x86_64, lldb_dl_x86_64, lldb_dil_x86_64, lldb_sil_x86_64, lldb_bpl_x86_64, lldb_spl_x86_64, lldb_r8l_x86_64, // Low 8 bits or r8 lldb_r9l_x86_64, // Low 8 bits or r9 lldb_r10l_x86_64, // Low 8 bits or r10 lldb_r11l_x86_64, // Low 8 bits or r11 lldb_r12l_x86_64, // Low 8 bits or r12 lldb_r13l_x86_64, // Low 8 bits or r13 lldb_r14l_x86_64, // Low 8 bits or r14 lldb_r15l_x86_64, // Low 8 bits or r15 LLDB_INVALID_REGNUM // register sets need to end with this flag }; static_assert((sizeof(g_gpr_regnums_x86_64) / sizeof(g_gpr_regnums_x86_64[0])) - 1 == k_num_gpr_registers_x86_64, "g_gpr_regnums_x86_64 has wrong number of register infos"); // Number of register sets provided by this context. enum { k_num_extended_register_sets = 2, k_num_register_sets = 4 }; // Register sets for x86 64-bit. static const RegisterSet g_reg_sets_x86_64[k_num_register_sets] = { {"General Purpose Registers", "gpr", k_num_gpr_registers_x86_64, g_gpr_regnums_x86_64}, }; #define REG_CONTEXT_SIZE (GetRegisterInfoInterface().GetGPRSize()) } // namespace NativeRegisterContextNetBSD * NativeRegisterContextNetBSD::CreateHostNativeRegisterContextNetBSD( const ArchSpec &target_arch, NativeThreadProtocol &native_thread, uint32_t concrete_frame_idx) { return new NativeRegisterContextNetBSD_x86_64(target_arch, native_thread, concrete_frame_idx); } // ---------------------------------------------------------------------------- // NativeRegisterContextNetBSD_x86_64 members. // ---------------------------------------------------------------------------- static RegisterInfoInterface * CreateRegisterInfoInterface(const ArchSpec &target_arch) { assert((HostInfo::GetArchitecture().GetAddressByteSize() == 8) && "Register setting path assumes this is a 64-bit host"); // X86_64 hosts know how to work with 64-bit and 32-bit EXEs using the // x86_64 register context. return new RegisterContextNetBSD_x86_64(target_arch); } NativeRegisterContextNetBSD_x86_64::NativeRegisterContextNetBSD_x86_64( const ArchSpec &target_arch, NativeThreadProtocol &native_thread, uint32_t concrete_frame_idx) : NativeRegisterContextNetBSD(native_thread, concrete_frame_idx, CreateRegisterInfoInterface(target_arch)), m_gpr_x86_64() {} // CONSIDER after local and llgs debugging are merged, register set support can // be moved into a base x86-64 class with IsRegisterSetAvailable made virtual. uint32_t NativeRegisterContextNetBSD_x86_64::GetRegisterSetCount() const { uint32_t sets = 0; for (uint32_t set_index = 0; set_index < k_num_register_sets; ++set_index) { if (GetSetForNativeRegNum(set_index) != -1) ++sets; } return sets; } const RegisterSet * NativeRegisterContextNetBSD_x86_64::GetRegisterSet(uint32_t set_index) const { switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) { case llvm::Triple::x86_64: return &g_reg_sets_x86_64[set_index]; default: assert(false && "Unhandled target architecture."); return nullptr; } return nullptr; } int NativeRegisterContextNetBSD_x86_64::GetSetForNativeRegNum( int reg_num) const { if (reg_num < lldb_fctrl_x86_64) return GPRegSet; else return -1; } int NativeRegisterContextNetBSD_x86_64::ReadRegisterSet(uint32_t set) { switch (set) { case GPRegSet: ReadGPR(); return 0; case FPRegSet: ReadFPR(); return 0; default: break; } return -1; } int NativeRegisterContextNetBSD_x86_64::WriteRegisterSet(uint32_t set) { switch (set) { case GPRegSet: WriteGPR(); return 0; case FPRegSet: WriteFPR(); return 0; default: break; } return -1; } Error NativeRegisterContextNetBSD_x86_64::ReadRegister( const RegisterInfo *reg_info, RegisterValue ®_value) { Error 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) { // This is likely an internal register for lldb use only and should not be // directly queried. error.SetErrorStringWithFormat("register \"%s\" is an internal-only lldb " "register, cannot read directly", reg_info->name); return error; } int set = GetSetForNativeRegNum(reg); if (set == -1) { // 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; } if (ReadRegisterSet(set) != 0) { // This is likely an internal register for lldb use only and should not be // directly queried. error.SetErrorStringWithFormat( "reading register set for register \"%s\" failed", reg_info->name); return error; } switch (reg) { case lldb_rax_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RAX]; break; case lldb_rbx_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RBX]; break; case lldb_rcx_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RCX]; break; case lldb_rdx_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RDX]; break; case lldb_rdi_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RDI]; break; case lldb_rsi_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RSI]; break; case lldb_rbp_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RBP]; break; case lldb_rsp_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RSP]; break; case lldb_r8_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R8]; break; case lldb_r9_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R9]; break; case lldb_r10_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R10]; break; case lldb_r11_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R11]; break; case lldb_r12_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R12]; break; case lldb_r13_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R13]; break; case lldb_r14_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R14]; break; case lldb_r15_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R15]; break; case lldb_rip_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RIP]; break; case lldb_rflags_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RFLAGS]; break; case lldb_cs_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_CS]; break; case lldb_fs_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_FS]; break; case lldb_gs_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_GS]; break; case lldb_ss_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_SS]; break; case lldb_ds_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_DS]; break; case lldb_es_x86_64: reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_ES]; break; } return error; } Error NativeRegisterContextNetBSD_x86_64::WriteRegister( const RegisterInfo *reg_info, const RegisterValue ®_value) { Error 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) { // This is likely an internal register for lldb use only and should not be // directly queried. error.SetErrorStringWithFormat("register \"%s\" is an internal-only lldb " "register, cannot read directly", reg_info->name); return error; } int set = GetSetForNativeRegNum(reg); if (set == -1) { // 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; } if (ReadRegisterSet(set) != 0) { // This is likely an internal register for lldb use only and should not be // directly queried. error.SetErrorStringWithFormat( "reading register set for register \"%s\" failed", reg_info->name); return error; } switch (reg) { case lldb_rax_x86_64: m_gpr_x86_64.regs[_REG_RAX] = reg_value.GetAsUInt64(); break; case lldb_rbx_x86_64: m_gpr_x86_64.regs[_REG_RBX] = reg_value.GetAsUInt64(); break; case lldb_rcx_x86_64: m_gpr_x86_64.regs[_REG_RCX] = reg_value.GetAsUInt64(); break; case lldb_rdx_x86_64: m_gpr_x86_64.regs[_REG_RDX] = reg_value.GetAsUInt64(); break; case lldb_rdi_x86_64: m_gpr_x86_64.regs[_REG_RDI] = reg_value.GetAsUInt64(); break; case lldb_rsi_x86_64: m_gpr_x86_64.regs[_REG_RSI] = reg_value.GetAsUInt64(); break; case lldb_rbp_x86_64: m_gpr_x86_64.regs[_REG_RBP] = reg_value.GetAsUInt64(); break; case lldb_rsp_x86_64: m_gpr_x86_64.regs[_REG_RSP] = reg_value.GetAsUInt64(); break; case lldb_r8_x86_64: m_gpr_x86_64.regs[_REG_R8] = reg_value.GetAsUInt64(); break; case lldb_r9_x86_64: m_gpr_x86_64.regs[_REG_R9] = reg_value.GetAsUInt64(); break; case lldb_r10_x86_64: m_gpr_x86_64.regs[_REG_R10] = reg_value.GetAsUInt64(); break; case lldb_r11_x86_64: m_gpr_x86_64.regs[_REG_R11] = reg_value.GetAsUInt64(); break; case lldb_r12_x86_64: m_gpr_x86_64.regs[_REG_R12] = reg_value.GetAsUInt64(); break; case lldb_r13_x86_64: m_gpr_x86_64.regs[_REG_R13] = reg_value.GetAsUInt64(); break; case lldb_r14_x86_64: m_gpr_x86_64.regs[_REG_R14] = reg_value.GetAsUInt64(); break; case lldb_r15_x86_64: m_gpr_x86_64.regs[_REG_R15] = reg_value.GetAsUInt64(); break; case lldb_rip_x86_64: m_gpr_x86_64.regs[_REG_RIP] = reg_value.GetAsUInt64(); break; case lldb_rflags_x86_64: m_gpr_x86_64.regs[_REG_RFLAGS] = reg_value.GetAsUInt64(); break; case lldb_cs_x86_64: m_gpr_x86_64.regs[_REG_CS] = reg_value.GetAsUInt64(); break; case lldb_fs_x86_64: m_gpr_x86_64.regs[_REG_FS] = reg_value.GetAsUInt64(); break; case lldb_gs_x86_64: m_gpr_x86_64.regs[_REG_GS] = reg_value.GetAsUInt64(); break; case lldb_ss_x86_64: m_gpr_x86_64.regs[_REG_SS] = reg_value.GetAsUInt64(); break; case lldb_ds_x86_64: m_gpr_x86_64.regs[_REG_DS] = reg_value.GetAsUInt64(); break; case lldb_es_x86_64: m_gpr_x86_64.regs[_REG_ES] = reg_value.GetAsUInt64(); break; } if (WriteRegisterSet(set) != 0) error.SetErrorStringWithFormat("failed to write register set"); return error; } Error NativeRegisterContextNetBSD_x86_64::ReadAllRegisterValues( lldb::DataBufferSP &data_sp) { Error error; data_sp.reset(new DataBufferHeap(REG_CONTEXT_SIZE, 0)); if (!data_sp) { error.SetErrorStringWithFormat( "failed to allocate DataBufferHeap instance of size %" PRIu64, REG_CONTEXT_SIZE); return error; } error = ReadGPR(); if (error.Fail()) return error; uint8_t *dst = data_sp->GetBytes(); if (dst == nullptr) { error.SetErrorStringWithFormat("DataBufferHeap instance of size %" PRIu64 " returned a null pointer", REG_CONTEXT_SIZE); return error; } ::memcpy(dst, &m_gpr_x86_64, GetRegisterInfoInterface().GetGPRSize()); dst += GetRegisterInfoInterface().GetGPRSize(); RegisterValue value((uint64_t)-1); const RegisterInfo *reg_info = GetRegisterInfoInterface().GetDynamicRegisterInfo("orig_eax"); if (reg_info == nullptr) reg_info = GetRegisterInfoInterface().GetDynamicRegisterInfo("orig_rax"); return error; } Error NativeRegisterContextNetBSD_x86_64::WriteAllRegisterValues( const lldb::DataBufferSP &data_sp) { Error error; if (!data_sp) { error.SetErrorStringWithFormat( "NativeRegisterContextNetBSD_x86_64::%s invalid data_sp provided", __FUNCTION__); return error; } if (data_sp->GetByteSize() != REG_CONTEXT_SIZE) { error.SetErrorStringWithFormat( "NativeRegisterContextNetBSD_x86_64::%s data_sp contained mismatched " "data size, expected %" PRIu64 ", actual %" PRIu64, __FUNCTION__, REG_CONTEXT_SIZE, data_sp->GetByteSize()); return error; } uint8_t *src = data_sp->GetBytes(); if (src == nullptr) { error.SetErrorStringWithFormat("NativeRegisterContextNetBSD_x86_64::%s " "DataBuffer::GetBytes() returned a null " "pointer", __FUNCTION__); return error; } ::memcpy(&m_gpr_x86_64, src, GetRegisterInfoInterface().GetGPRSize()); error = WriteGPR(); if (error.Fail()) return error; src += GetRegisterInfoInterface().GetGPRSize(); return error; } #endif // defined(__x86_64__)