| //===-- 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/Log.h" |
| #include "lldb/Utility/Status.h" |
| |
| #include "Plugins/Process/Utility/RegisterContextNetBSD_x86_64.h" |
| |
| // clang-format off |
| #include <sys/types.h> |
| #include <sys/sysctl.h> |
| #include <x86/cpu.h> |
| #include <elf.h> |
| #include <err.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| // clang-format on |
| |
| 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()) |
| |
| const int fpu_present = []() -> int { |
| int mib[2]; |
| int error; |
| size_t len; |
| int val; |
| |
| len = sizeof(val); |
| mib[0] = CTL_MACHDEP; |
| mib[1] = CPU_FPU_PRESENT; |
| |
| error = sysctl(mib, __arraycount(mib), &val, &len, NULL, 0); |
| if (error) |
| errx(EXIT_FAILURE, "sysctl"); |
| |
| return val; |
| }(); |
| |
| const int osfxsr = []() -> int { |
| int mib[2]; |
| int error; |
| size_t len; |
| int val; |
| |
| len = sizeof(val); |
| mib[0] = CTL_MACHDEP; |
| mib[1] = CPU_OSFXSR; |
| |
| error = sysctl(mib, __arraycount(mib), &val, &len, NULL, 0); |
| if (error) |
| errx(EXIT_FAILURE, "sysctl"); |
| |
| return val; |
| }(); |
| |
| const int fpu_save = []() -> int { |
| int mib[2]; |
| int error; |
| size_t len; |
| int val; |
| |
| len = sizeof(val); |
| mib[0] = CTL_MACHDEP; |
| mib[1] = CPU_FPU_SAVE; |
| |
| error = sysctl(mib, __arraycount(mib), &val, &len, NULL, 0); |
| if (error) |
| errx(EXIT_FAILURE, "sysctl"); |
| |
| return val; |
| }(); |
| |
| } // namespace |
| |
| NativeRegisterContextNetBSD * |
| NativeRegisterContextNetBSD::CreateHostNativeRegisterContextNetBSD( |
| const ArchSpec &target_arch, NativeThreadProtocol &native_thread) { |
| return new NativeRegisterContextNetBSD_x86_64(target_arch, native_thread); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // 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) |
| : NativeRegisterContextNetBSD(native_thread, |
| CreateRegisterInfoInterface(target_arch)), |
| m_gpr_x86_64(), m_fpr_x86_64(), m_dbr_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 <= k_last_gpr_x86_64) |
| return GPRegSet; |
| else if (reg_num <= k_last_fpr_x86_64) |
| return (fpu_present == 1 && osfxsr == 1 && fpu_save >= 1) ? FPRegSet : -1; |
| else if (reg_num <= k_last_avx_x86_64) |
| return -1; // AVX |
| else if (reg_num <= k_last_mpxr_x86_64) |
| return -1; // MPXR |
| else if (reg_num <= k_last_mpxc_x86_64) |
| return -1; // MPXC |
| else if (reg_num <= lldb_dr7_x86_64) |
| return DBRegSet; // DBR |
| else |
| return -1; |
| } |
| |
| int NativeRegisterContextNetBSD_x86_64::ReadRegisterSet(uint32_t set) { |
| switch (set) { |
| case GPRegSet: |
| ReadGPR(); |
| return 0; |
| case FPRegSet: |
| ReadFPR(); |
| return 0; |
| case DBRegSet: |
| ReadDBR(); |
| 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; |
| case DBRegSet: |
| WriteDBR(); |
| return 0; |
| default: |
| break; |
| } |
| return -1; |
| } |
| |
| Status |
| NativeRegisterContextNetBSD_x86_64::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) { |
| // 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; |
| case lldb_fctrl_x86_64: |
| reg_value = (uint16_t)m_fpr_x86_64.fxstate.fx_cw; |
| break; |
| case lldb_fstat_x86_64: |
| reg_value = (uint16_t)m_fpr_x86_64.fxstate.fx_sw; |
| break; |
| case lldb_ftag_x86_64: |
| reg_value = (uint8_t)m_fpr_x86_64.fxstate.fx_tw; |
| break; |
| case lldb_fop_x86_64: |
| reg_value = (uint64_t)m_fpr_x86_64.fxstate.fx_opcode; |
| break; |
| case lldb_fiseg_x86_64: |
| reg_value = (uint64_t)m_fpr_x86_64.fxstate.fx_ip.fa_64; |
| break; |
| case lldb_fioff_x86_64: |
| reg_value = (uint32_t)m_fpr_x86_64.fxstate.fx_ip.fa_32.fa_off; |
| break; |
| case lldb_foseg_x86_64: |
| reg_value = (uint64_t)m_fpr_x86_64.fxstate.fx_dp.fa_64; |
| break; |
| case lldb_fooff_x86_64: |
| reg_value = (uint32_t)m_fpr_x86_64.fxstate.fx_dp.fa_32.fa_off; |
| break; |
| case lldb_mxcsr_x86_64: |
| reg_value = (uint32_t)m_fpr_x86_64.fxstate.fx_mxcsr; |
| break; |
| case lldb_mxcsrmask_x86_64: |
| reg_value = (uint32_t)m_fpr_x86_64.fxstate.fx_mxcsr_mask; |
| break; |
| case lldb_st0_x86_64: |
| case lldb_st1_x86_64: |
| case lldb_st2_x86_64: |
| case lldb_st3_x86_64: |
| case lldb_st4_x86_64: |
| case lldb_st5_x86_64: |
| case lldb_st6_x86_64: |
| case lldb_st7_x86_64: |
| reg_value.SetBytes(&m_fpr_x86_64.fxstate.fx_87_ac[reg - lldb_st0_x86_64], |
| reg_info->byte_size, endian::InlHostByteOrder()); |
| break; |
| case lldb_mm0_x86_64: |
| case lldb_mm1_x86_64: |
| case lldb_mm2_x86_64: |
| case lldb_mm3_x86_64: |
| case lldb_mm4_x86_64: |
| case lldb_mm5_x86_64: |
| case lldb_mm6_x86_64: |
| case lldb_mm7_x86_64: |
| reg_value.SetBytes(&m_fpr_x86_64.fxstate.fx_xmm[reg - lldb_mm0_x86_64], |
| reg_info->byte_size, endian::InlHostByteOrder()); |
| break; |
| case lldb_xmm0_x86_64: |
| case lldb_xmm1_x86_64: |
| case lldb_xmm2_x86_64: |
| case lldb_xmm3_x86_64: |
| case lldb_xmm4_x86_64: |
| case lldb_xmm5_x86_64: |
| case lldb_xmm6_x86_64: |
| case lldb_xmm7_x86_64: |
| case lldb_xmm8_x86_64: |
| case lldb_xmm9_x86_64: |
| case lldb_xmm10_x86_64: |
| case lldb_xmm11_x86_64: |
| case lldb_xmm12_x86_64: |
| case lldb_xmm13_x86_64: |
| case lldb_xmm14_x86_64: |
| case lldb_xmm15_x86_64: |
| reg_value.SetBytes(&m_fpr_x86_64.fxstate.fx_xmm[reg - lldb_xmm0_x86_64], |
| reg_info->byte_size, endian::InlHostByteOrder()); |
| break; |
| case lldb_dr0_x86_64: |
| case lldb_dr1_x86_64: |
| case lldb_dr2_x86_64: |
| case lldb_dr3_x86_64: |
| case lldb_dr4_x86_64: |
| case lldb_dr5_x86_64: |
| case lldb_dr6_x86_64: |
| case lldb_dr7_x86_64: |
| reg_value = (uint64_t)m_dbr_x86_64.dr[reg - lldb_dr0_x86_64]; |
| break; |
| } |
| |
| return error; |
| } |
| |
| Status NativeRegisterContextNetBSD_x86_64::WriteRegister( |
| const RegisterInfo *reg_info, const 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) { |
| // 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; |
| case lldb_fctrl_x86_64: |
| m_fpr_x86_64.fxstate.fx_cw = reg_value.GetAsUInt16(); |
| break; |
| case lldb_fstat_x86_64: |
| m_fpr_x86_64.fxstate.fx_sw = reg_value.GetAsUInt16(); |
| break; |
| case lldb_ftag_x86_64: |
| m_fpr_x86_64.fxstate.fx_tw = reg_value.GetAsUInt8(); |
| break; |
| case lldb_fop_x86_64: |
| m_fpr_x86_64.fxstate.fx_opcode = reg_value.GetAsUInt16(); |
| break; |
| case lldb_fiseg_x86_64: |
| m_fpr_x86_64.fxstate.fx_ip.fa_64 = reg_value.GetAsUInt64(); |
| break; |
| case lldb_fioff_x86_64: |
| m_fpr_x86_64.fxstate.fx_ip.fa_32.fa_off = reg_value.GetAsUInt32(); |
| break; |
| case lldb_foseg_x86_64: |
| m_fpr_x86_64.fxstate.fx_dp.fa_64 = reg_value.GetAsUInt64(); |
| break; |
| case lldb_fooff_x86_64: |
| m_fpr_x86_64.fxstate.fx_dp.fa_32.fa_off = reg_value.GetAsUInt32(); |
| break; |
| case lldb_mxcsr_x86_64: |
| m_fpr_x86_64.fxstate.fx_mxcsr = reg_value.GetAsUInt32(); |
| break; |
| case lldb_mxcsrmask_x86_64: |
| m_fpr_x86_64.fxstate.fx_mxcsr_mask = reg_value.GetAsUInt32(); |
| break; |
| case lldb_st0_x86_64: |
| case lldb_st1_x86_64: |
| case lldb_st2_x86_64: |
| case lldb_st3_x86_64: |
| case lldb_st4_x86_64: |
| case lldb_st5_x86_64: |
| case lldb_st6_x86_64: |
| case lldb_st7_x86_64: |
| ::memcpy(&m_fpr_x86_64.fxstate.fx_87_ac[reg - lldb_st0_x86_64], |
| reg_value.GetBytes(), reg_value.GetByteSize()); |
| break; |
| case lldb_mm0_x86_64: |
| case lldb_mm1_x86_64: |
| case lldb_mm2_x86_64: |
| case lldb_mm3_x86_64: |
| case lldb_mm4_x86_64: |
| case lldb_mm5_x86_64: |
| case lldb_mm6_x86_64: |
| case lldb_mm7_x86_64: |
| ::memcpy(&m_fpr_x86_64.fxstate.fx_xmm[reg - lldb_mm0_x86_64], |
| reg_value.GetBytes(), reg_value.GetByteSize()); |
| break; |
| case lldb_xmm0_x86_64: |
| case lldb_xmm1_x86_64: |
| case lldb_xmm2_x86_64: |
| case lldb_xmm3_x86_64: |
| case lldb_xmm4_x86_64: |
| case lldb_xmm5_x86_64: |
| case lldb_xmm6_x86_64: |
| case lldb_xmm7_x86_64: |
| case lldb_xmm8_x86_64: |
| case lldb_xmm9_x86_64: |
| case lldb_xmm10_x86_64: |
| case lldb_xmm11_x86_64: |
| case lldb_xmm12_x86_64: |
| case lldb_xmm13_x86_64: |
| case lldb_xmm14_x86_64: |
| case lldb_xmm15_x86_64: |
| ::memcpy(&m_fpr_x86_64.fxstate.fx_xmm[reg - lldb_xmm0_x86_64], |
| reg_value.GetBytes(), reg_value.GetByteSize()); |
| break; |
| case lldb_dr0_x86_64: |
| case lldb_dr1_x86_64: |
| case lldb_dr2_x86_64: |
| case lldb_dr3_x86_64: |
| case lldb_dr4_x86_64: |
| case lldb_dr5_x86_64: |
| case lldb_dr6_x86_64: |
| case lldb_dr7_x86_64: |
| m_dbr_x86_64.dr[reg - lldb_dr0_x86_64] = reg_value.GetAsUInt64(); |
| break; |
| } |
| |
| if (WriteRegisterSet(set) != 0) |
| error.SetErrorStringWithFormat("failed to write register set"); |
| |
| return error; |
| } |
| |
| Status NativeRegisterContextNetBSD_x86_64::ReadAllRegisterValues( |
| lldb::DataBufferSP &data_sp) { |
| Status 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; |
| } |
| |
| Status NativeRegisterContextNetBSD_x86_64::WriteAllRegisterValues( |
| const lldb::DataBufferSP &data_sp) { |
| Status 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; |
| } |
| |
| Status NativeRegisterContextNetBSD_x86_64::IsWatchpointHit(uint32_t wp_index, |
| bool &is_hit) { |
| if (wp_index >= NumSupportedHardwareWatchpoints()) |
| return Status("Watchpoint index out of range"); |
| |
| RegisterValue reg_value; |
| const RegisterInfo *const reg_info = GetRegisterInfoAtIndex(lldb_dr6_x86_64); |
| Status error = ReadRegister(reg_info, reg_value); |
| if (error.Fail()) { |
| is_hit = false; |
| return error; |
| } |
| |
| uint64_t status_bits = reg_value.GetAsUInt64(); |
| |
| is_hit = status_bits & (1 << wp_index); |
| |
| return error; |
| } |
| |
| Status NativeRegisterContextNetBSD_x86_64::GetWatchpointHitIndex( |
| uint32_t &wp_index, lldb::addr_t trap_addr) { |
| uint32_t num_hw_wps = NumSupportedHardwareWatchpoints(); |
| for (wp_index = 0; wp_index < num_hw_wps; ++wp_index) { |
| bool is_hit; |
| Status error = IsWatchpointHit(wp_index, is_hit); |
| if (error.Fail()) { |
| wp_index = LLDB_INVALID_INDEX32; |
| return error; |
| } else if (is_hit) { |
| return error; |
| } |
| } |
| wp_index = LLDB_INVALID_INDEX32; |
| return Status(); |
| } |
| |
| Status NativeRegisterContextNetBSD_x86_64::IsWatchpointVacant(uint32_t wp_index, |
| bool &is_vacant) { |
| if (wp_index >= NumSupportedHardwareWatchpoints()) |
| return Status("Watchpoint index out of range"); |
| |
| RegisterValue reg_value; |
| const RegisterInfo *const reg_info = GetRegisterInfoAtIndex(lldb_dr7_x86_64); |
| Status error = ReadRegister(reg_info, reg_value); |
| if (error.Fail()) { |
| is_vacant = false; |
| return error; |
| } |
| |
| uint64_t control_bits = reg_value.GetAsUInt64(); |
| |
| is_vacant = !(control_bits & (1 << (2 * wp_index))); |
| |
| return error; |
| } |
| |
| Status NativeRegisterContextNetBSD_x86_64::SetHardwareWatchpointWithIndex( |
| lldb::addr_t addr, size_t size, uint32_t watch_flags, uint32_t wp_index) { |
| |
| if (wp_index >= NumSupportedHardwareWatchpoints()) |
| return Status("Watchpoint index out of range"); |
| |
| // Read only watchpoints aren't supported on x86_64. Fall back to read/write |
| // waitchpoints instead. |
| // TODO: Add logic to detect when a write happens and ignore that watchpoint |
| // hit. |
| if (watch_flags == 0x2) |
| watch_flags = 0x3; |
| |
| if (watch_flags != 0x1 && watch_flags != 0x3) |
| return Status("Invalid read/write bits for watchpoint"); |
| |
| if (size != 1 && size != 2 && size != 4 && size != 8) |
| return Status("Invalid size for watchpoint"); |
| |
| bool is_vacant; |
| Status error = IsWatchpointVacant(wp_index, is_vacant); |
| if (error.Fail()) |
| return error; |
| if (!is_vacant) |
| return Status("Watchpoint index not vacant"); |
| |
| RegisterValue reg_value; |
| const RegisterInfo *const reg_info_dr7 = |
| GetRegisterInfoAtIndex(lldb_dr7_x86_64); |
| error = ReadRegister(reg_info_dr7, reg_value); |
| if (error.Fail()) |
| return error; |
| |
| // for watchpoints 0, 1, 2, or 3, respectively, set bits 1, 3, 5, or 7 |
| uint64_t enable_bit = 1 << (2 * wp_index); |
| |
| // set bits 16-17, 20-21, 24-25, or 28-29 |
| // with 0b01 for write, and 0b11 for read/write |
| uint64_t rw_bits = watch_flags << (16 + 4 * wp_index); |
| |
| // set bits 18-19, 22-23, 26-27, or 30-31 |
| // with 0b00, 0b01, 0b10, or 0b11 |
| // for 1, 2, 8 (if supported), or 4 bytes, respectively |
| uint64_t size_bits = (size == 8 ? 0x2 : size - 1) << (18 + 4 * wp_index); |
| |
| uint64_t bit_mask = (0x3 << (2 * wp_index)) | (0xF << (16 + 4 * wp_index)); |
| |
| uint64_t control_bits = reg_value.GetAsUInt64() & ~bit_mask; |
| |
| control_bits |= enable_bit | rw_bits | size_bits; |
| |
| const RegisterInfo *const reg_info_drN = |
| GetRegisterInfoAtIndex(lldb_dr0_x86_64 + wp_index); |
| error = WriteRegister(reg_info_drN, RegisterValue(addr)); |
| if (error.Fail()) |
| return error; |
| |
| error = WriteRegister(reg_info_dr7, RegisterValue(control_bits)); |
| if (error.Fail()) |
| return error; |
| |
| error.Clear(); |
| return error; |
| } |
| |
| bool NativeRegisterContextNetBSD_x86_64::ClearHardwareWatchpoint( |
| uint32_t wp_index) { |
| if (wp_index >= NumSupportedHardwareWatchpoints()) |
| return false; |
| |
| RegisterValue reg_value; |
| |
| // for watchpoints 0, 1, 2, or 3, respectively, clear bits 0, 1, 2, or 3 of |
| // the debug status register (DR6) |
| const RegisterInfo *const reg_info_dr6 = |
| GetRegisterInfoAtIndex(lldb_dr6_x86_64); |
| Status error = ReadRegister(reg_info_dr6, reg_value); |
| if (error.Fail()) |
| return false; |
| uint64_t bit_mask = 1 << wp_index; |
| uint64_t status_bits = reg_value.GetAsUInt64() & ~bit_mask; |
| error = WriteRegister(reg_info_dr6, RegisterValue(status_bits)); |
| if (error.Fail()) |
| return false; |
| |
| // for watchpoints 0, 1, 2, or 3, respectively, clear bits {0-1,16-19}, |
| // {2-3,20-23}, {4-5,24-27}, or {6-7,28-31} of the debug control register |
| // (DR7) |
| const RegisterInfo *const reg_info_dr7 = |
| GetRegisterInfoAtIndex(lldb_dr7_x86_64); |
| error = ReadRegister(reg_info_dr7, reg_value); |
| if (error.Fail()) |
| return false; |
| bit_mask = (0x3 << (2 * wp_index)) | (0xF << (16 + 4 * wp_index)); |
| uint64_t control_bits = reg_value.GetAsUInt64() & ~bit_mask; |
| return WriteRegister(reg_info_dr7, RegisterValue(control_bits)).Success(); |
| } |
| |
| Status NativeRegisterContextNetBSD_x86_64::ClearAllHardwareWatchpoints() { |
| RegisterValue reg_value; |
| |
| // clear bits {0-4} of the debug status register (DR6) |
| const RegisterInfo *const reg_info_dr6 = |
| GetRegisterInfoAtIndex(lldb_dr6_x86_64); |
| Status error = ReadRegister(reg_info_dr6, reg_value); |
| if (error.Fail()) |
| return error; |
| uint64_t bit_mask = 0xF; |
| uint64_t status_bits = reg_value.GetAsUInt64() & ~bit_mask; |
| error = WriteRegister(reg_info_dr6, RegisterValue(status_bits)); |
| if (error.Fail()) |
| return error; |
| |
| // clear bits {0-7,16-31} of the debug control register (DR7) |
| const RegisterInfo *const reg_info_dr7 = |
| GetRegisterInfoAtIndex(lldb_dr7_x86_64); |
| error = ReadRegister(reg_info_dr7, reg_value); |
| if (error.Fail()) |
| return error; |
| bit_mask = 0xFF | (0xFFFF << 16); |
| uint64_t control_bits = reg_value.GetAsUInt64() & ~bit_mask; |
| return WriteRegister(reg_info_dr7, RegisterValue(control_bits)); |
| } |
| |
| uint32_t NativeRegisterContextNetBSD_x86_64::SetHardwareWatchpoint( |
| lldb::addr_t addr, size_t size, uint32_t watch_flags) { |
| Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS)); |
| const uint32_t num_hw_watchpoints = NumSupportedHardwareWatchpoints(); |
| for (uint32_t wp_index = 0; wp_index < num_hw_watchpoints; ++wp_index) { |
| bool is_vacant; |
| Status error = IsWatchpointVacant(wp_index, is_vacant); |
| if (is_vacant) { |
| error = SetHardwareWatchpointWithIndex(addr, size, watch_flags, wp_index); |
| if (error.Success()) |
| return wp_index; |
| } |
| if (error.Fail() && log) { |
| log->Printf("NativeRegisterContextNetBSD_x86_64::%s Error: %s", |
| __FUNCTION__, error.AsCString()); |
| } |
| } |
| return LLDB_INVALID_INDEX32; |
| } |
| |
| lldb::addr_t |
| NativeRegisterContextNetBSD_x86_64::GetWatchpointAddress(uint32_t wp_index) { |
| if (wp_index >= NumSupportedHardwareWatchpoints()) |
| return LLDB_INVALID_ADDRESS; |
| RegisterValue reg_value; |
| const RegisterInfo *const reg_info_drN = |
| GetRegisterInfoAtIndex(lldb_dr0_x86_64 + wp_index); |
| if (ReadRegister(reg_info_drN, reg_value).Fail()) |
| return LLDB_INVALID_ADDRESS; |
| return reg_value.GetAsUInt64(); |
| } |
| |
| uint32_t NativeRegisterContextNetBSD_x86_64::NumSupportedHardwareWatchpoints() { |
| // Available debug address registers: dr0, dr1, dr2, dr3 |
| return 4; |
| } |
| |
| #endif // defined(__x86_64__) |
