3eef2b5e96
Summary: Include initial support for: - single step mode (PT_STEP) - single step trap handling (TRAP_TRACE) - exec() trap (TRAP_EXEC) - add placeholder interfaces for FPR - initial code for NetBSD core(5) files - minor tweaks While there improve style of altered elf-core/ files. This code raises the number of passing tests on NetBSD to around 50% (600+/1200+). The introduced code is subject to improve afterwards for additional features and bug fixes. Sponsored by <The NetBSD Foundation> Reviewers: labath, joerg, emaste, kettenis Reviewed By: labath Subscribers: srhines, #lldb Tags: #lldb Differential Revision: https://reviews.llvm.org/D31450 llvm-svn: 299109
484 lines
15 KiB
C++
484 lines
15 KiB
C++
//===-- NativeRegisterContextNetBSD_x86_64.cpp ---------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#if defined(__x86_64__)
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#include "NativeRegisterContextNetBSD_x86_64.h"
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#include "lldb/Core/RegisterValue.h"
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#include "lldb/Host/HostInfo.h"
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#include "lldb/Utility/DataBufferHeap.h"
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#include "lldb/Utility/Error.h"
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#include "lldb/Utility/Log.h"
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#include "Plugins/Process/Utility/RegisterContextNetBSD_x86_64.h"
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#include <elf.h>
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using namespace lldb_private;
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using namespace lldb_private::process_netbsd;
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// ----------------------------------------------------------------------------
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// Private namespace.
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// ----------------------------------------------------------------------------
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namespace {
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// x86 64-bit general purpose registers.
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static const uint32_t g_gpr_regnums_x86_64[] = {
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lldb_rax_x86_64, lldb_rbx_x86_64, lldb_rcx_x86_64, lldb_rdx_x86_64,
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lldb_rdi_x86_64, lldb_rsi_x86_64, lldb_rbp_x86_64, lldb_rsp_x86_64,
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lldb_r8_x86_64, lldb_r9_x86_64, lldb_r10_x86_64, lldb_r11_x86_64,
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lldb_r12_x86_64, lldb_r13_x86_64, lldb_r14_x86_64, lldb_r15_x86_64,
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lldb_rip_x86_64, lldb_rflags_x86_64, lldb_cs_x86_64, lldb_fs_x86_64,
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lldb_gs_x86_64, lldb_ss_x86_64, lldb_ds_x86_64, lldb_es_x86_64,
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lldb_eax_x86_64, lldb_ebx_x86_64, lldb_ecx_x86_64, lldb_edx_x86_64,
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lldb_edi_x86_64, lldb_esi_x86_64, lldb_ebp_x86_64, lldb_esp_x86_64,
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lldb_r8d_x86_64, // Low 32 bits or r8
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lldb_r9d_x86_64, // Low 32 bits or r9
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lldb_r10d_x86_64, // Low 32 bits or r10
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lldb_r11d_x86_64, // Low 32 bits or r11
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lldb_r12d_x86_64, // Low 32 bits or r12
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lldb_r13d_x86_64, // Low 32 bits or r13
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lldb_r14d_x86_64, // Low 32 bits or r14
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lldb_r15d_x86_64, // Low 32 bits or r15
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lldb_ax_x86_64, lldb_bx_x86_64, lldb_cx_x86_64, lldb_dx_x86_64,
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lldb_di_x86_64, lldb_si_x86_64, lldb_bp_x86_64, lldb_sp_x86_64,
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lldb_r8w_x86_64, // Low 16 bits or r8
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lldb_r9w_x86_64, // Low 16 bits or r9
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lldb_r10w_x86_64, // Low 16 bits or r10
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lldb_r11w_x86_64, // Low 16 bits or r11
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lldb_r12w_x86_64, // Low 16 bits or r12
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lldb_r13w_x86_64, // Low 16 bits or r13
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lldb_r14w_x86_64, // Low 16 bits or r14
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lldb_r15w_x86_64, // Low 16 bits or r15
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lldb_ah_x86_64, lldb_bh_x86_64, lldb_ch_x86_64, lldb_dh_x86_64,
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lldb_al_x86_64, lldb_bl_x86_64, lldb_cl_x86_64, lldb_dl_x86_64,
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lldb_dil_x86_64, lldb_sil_x86_64, lldb_bpl_x86_64, lldb_spl_x86_64,
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lldb_r8l_x86_64, // Low 8 bits or r8
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lldb_r9l_x86_64, // Low 8 bits or r9
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lldb_r10l_x86_64, // Low 8 bits or r10
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lldb_r11l_x86_64, // Low 8 bits or r11
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lldb_r12l_x86_64, // Low 8 bits or r12
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lldb_r13l_x86_64, // Low 8 bits or r13
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lldb_r14l_x86_64, // Low 8 bits or r14
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lldb_r15l_x86_64, // Low 8 bits or r15
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LLDB_INVALID_REGNUM // register sets need to end with this flag
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};
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static_assert((sizeof(g_gpr_regnums_x86_64) / sizeof(g_gpr_regnums_x86_64[0])) -
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1 ==
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k_num_gpr_registers_x86_64,
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"g_gpr_regnums_x86_64 has wrong number of register infos");
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// Number of register sets provided by this context.
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enum { k_num_extended_register_sets = 2, k_num_register_sets = 4 };
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// Register sets for x86 64-bit.
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static const RegisterSet g_reg_sets_x86_64[k_num_register_sets] = {
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{"General Purpose Registers", "gpr", k_num_gpr_registers_x86_64,
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g_gpr_regnums_x86_64},
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};
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#define REG_CONTEXT_SIZE (GetRegisterInfoInterface().GetGPRSize())
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} // namespace
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NativeRegisterContextNetBSD *
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NativeRegisterContextNetBSD::CreateHostNativeRegisterContextNetBSD(
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const ArchSpec &target_arch, NativeThreadProtocol &native_thread,
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uint32_t concrete_frame_idx) {
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return new NativeRegisterContextNetBSD_x86_64(target_arch, native_thread,
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concrete_frame_idx);
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}
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// ----------------------------------------------------------------------------
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// NativeRegisterContextNetBSD_x86_64 members.
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// ----------------------------------------------------------------------------
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static RegisterInfoInterface *
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CreateRegisterInfoInterface(const ArchSpec &target_arch) {
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assert((HostInfo::GetArchitecture().GetAddressByteSize() == 8) &&
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"Register setting path assumes this is a 64-bit host");
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// X86_64 hosts know how to work with 64-bit and 32-bit EXEs using the
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// x86_64 register context.
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return new RegisterContextNetBSD_x86_64(target_arch);
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}
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NativeRegisterContextNetBSD_x86_64::NativeRegisterContextNetBSD_x86_64(
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const ArchSpec &target_arch, NativeThreadProtocol &native_thread,
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uint32_t concrete_frame_idx)
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: NativeRegisterContextNetBSD(native_thread, concrete_frame_idx,
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CreateRegisterInfoInterface(target_arch)),
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m_gpr_x86_64() {}
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// CONSIDER after local and llgs debugging are merged, register set support can
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// be moved into a base x86-64 class with IsRegisterSetAvailable made virtual.
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uint32_t NativeRegisterContextNetBSD_x86_64::GetRegisterSetCount() const {
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uint32_t sets = 0;
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for (uint32_t set_index = 0; set_index < k_num_register_sets; ++set_index) {
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if (GetSetForNativeRegNum(set_index) != -1)
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++sets;
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}
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return sets;
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}
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const RegisterSet *
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NativeRegisterContextNetBSD_x86_64::GetRegisterSet(uint32_t set_index) const {
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switch (GetRegisterInfoInterface().GetTargetArchitecture().GetMachine()) {
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case llvm::Triple::x86_64:
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return &g_reg_sets_x86_64[set_index];
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default:
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assert(false && "Unhandled target architecture.");
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return nullptr;
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}
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return nullptr;
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}
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int NativeRegisterContextNetBSD_x86_64::GetSetForNativeRegNum(
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int reg_num) const {
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if (reg_num < lldb_fctrl_x86_64)
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return GPRegSet;
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else
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return -1;
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}
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int NativeRegisterContextNetBSD_x86_64::ReadRegisterSet(uint32_t set) {
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switch (set) {
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case GPRegSet:
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ReadGPR();
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return 0;
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case FPRegSet:
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ReadFPR();
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return 0;
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default:
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break;
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}
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return -1;
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}
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int NativeRegisterContextNetBSD_x86_64::WriteRegisterSet(uint32_t set) {
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switch (set) {
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case GPRegSet:
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WriteGPR();
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return 0;
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case FPRegSet:
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WriteFPR();
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return 0;
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default:
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break;
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}
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return -1;
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}
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Error NativeRegisterContextNetBSD_x86_64::ReadRegister(
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const RegisterInfo *reg_info, RegisterValue ®_value) {
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Error error;
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if (!reg_info) {
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error.SetErrorString("reg_info NULL");
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return error;
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}
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const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
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if (reg == LLDB_INVALID_REGNUM) {
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// This is likely an internal register for lldb use only and should not be
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// directly queried.
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error.SetErrorStringWithFormat("register \"%s\" is an internal-only lldb "
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"register, cannot read directly",
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reg_info->name);
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return error;
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}
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int set = GetSetForNativeRegNum(reg);
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if (set == -1) {
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// This is likely an internal register for lldb use only and should not be
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// directly queried.
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error.SetErrorStringWithFormat("register \"%s\" is in unrecognized set",
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reg_info->name);
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return error;
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}
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if (ReadRegisterSet(set) != 0) {
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// This is likely an internal register for lldb use only and should not be
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// directly queried.
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error.SetErrorStringWithFormat(
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"reading register set for register \"%s\" failed", reg_info->name);
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return error;
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}
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switch (reg) {
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case lldb_rax_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RAX];
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break;
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case lldb_rbx_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RBX];
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break;
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case lldb_rcx_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RCX];
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break;
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case lldb_rdx_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RDX];
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break;
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case lldb_rdi_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RDI];
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break;
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case lldb_rsi_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RSI];
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break;
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case lldb_rbp_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RBP];
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break;
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case lldb_rsp_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RSP];
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break;
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case lldb_r8_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R8];
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break;
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case lldb_r9_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R9];
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break;
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case lldb_r10_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R10];
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break;
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case lldb_r11_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R11];
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break;
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case lldb_r12_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R12];
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break;
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case lldb_r13_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R13];
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break;
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case lldb_r14_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R14];
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break;
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case lldb_r15_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_R15];
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break;
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case lldb_rip_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RIP];
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break;
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case lldb_rflags_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_RFLAGS];
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break;
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case lldb_cs_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_CS];
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break;
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case lldb_fs_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_FS];
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break;
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case lldb_gs_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_GS];
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break;
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case lldb_ss_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_SS];
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break;
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case lldb_ds_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_DS];
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break;
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case lldb_es_x86_64:
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reg_value = (uint64_t)m_gpr_x86_64.regs[_REG_ES];
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break;
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}
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return error;
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}
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Error NativeRegisterContextNetBSD_x86_64::WriteRegister(
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const RegisterInfo *reg_info, const RegisterValue ®_value) {
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Error error;
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if (!reg_info) {
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error.SetErrorString("reg_info NULL");
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return error;
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}
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const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
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if (reg == LLDB_INVALID_REGNUM) {
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// This is likely an internal register for lldb use only and should not be
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// directly queried.
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error.SetErrorStringWithFormat("register \"%s\" is an internal-only lldb "
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"register, cannot read directly",
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reg_info->name);
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return error;
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}
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int set = GetSetForNativeRegNum(reg);
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if (set == -1) {
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// This is likely an internal register for lldb use only and should not be
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// directly queried.
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error.SetErrorStringWithFormat("register \"%s\" is in unrecognized set",
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reg_info->name);
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return error;
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}
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if (ReadRegisterSet(set) != 0) {
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// This is likely an internal register for lldb use only and should not be
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// directly queried.
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error.SetErrorStringWithFormat(
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"reading register set for register \"%s\" failed", reg_info->name);
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return error;
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}
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switch (reg) {
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case lldb_rax_x86_64:
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m_gpr_x86_64.regs[_REG_RAX] = reg_value.GetAsUInt64();
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break;
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case lldb_rbx_x86_64:
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m_gpr_x86_64.regs[_REG_RBX] = reg_value.GetAsUInt64();
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break;
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case lldb_rcx_x86_64:
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m_gpr_x86_64.regs[_REG_RCX] = reg_value.GetAsUInt64();
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break;
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case lldb_rdx_x86_64:
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m_gpr_x86_64.regs[_REG_RDX] = reg_value.GetAsUInt64();
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break;
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case lldb_rdi_x86_64:
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m_gpr_x86_64.regs[_REG_RDI] = reg_value.GetAsUInt64();
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break;
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case lldb_rsi_x86_64:
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m_gpr_x86_64.regs[_REG_RSI] = reg_value.GetAsUInt64();
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break;
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case lldb_rbp_x86_64:
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m_gpr_x86_64.regs[_REG_RBP] = reg_value.GetAsUInt64();
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break;
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case lldb_rsp_x86_64:
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m_gpr_x86_64.regs[_REG_RSP] = reg_value.GetAsUInt64();
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break;
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case lldb_r8_x86_64:
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m_gpr_x86_64.regs[_REG_R8] = reg_value.GetAsUInt64();
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break;
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case lldb_r9_x86_64:
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m_gpr_x86_64.regs[_REG_R9] = reg_value.GetAsUInt64();
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break;
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case lldb_r10_x86_64:
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m_gpr_x86_64.regs[_REG_R10] = reg_value.GetAsUInt64();
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break;
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case lldb_r11_x86_64:
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m_gpr_x86_64.regs[_REG_R11] = reg_value.GetAsUInt64();
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break;
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case lldb_r12_x86_64:
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m_gpr_x86_64.regs[_REG_R12] = reg_value.GetAsUInt64();
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break;
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case lldb_r13_x86_64:
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m_gpr_x86_64.regs[_REG_R13] = reg_value.GetAsUInt64();
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break;
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case lldb_r14_x86_64:
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m_gpr_x86_64.regs[_REG_R14] = reg_value.GetAsUInt64();
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break;
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case lldb_r15_x86_64:
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m_gpr_x86_64.regs[_REG_R15] = reg_value.GetAsUInt64();
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break;
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case lldb_rip_x86_64:
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m_gpr_x86_64.regs[_REG_RIP] = reg_value.GetAsUInt64();
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break;
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case lldb_rflags_x86_64:
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m_gpr_x86_64.regs[_REG_RFLAGS] = reg_value.GetAsUInt64();
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break;
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case lldb_cs_x86_64:
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m_gpr_x86_64.regs[_REG_CS] = reg_value.GetAsUInt64();
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break;
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case lldb_fs_x86_64:
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m_gpr_x86_64.regs[_REG_FS] = reg_value.GetAsUInt64();
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break;
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case lldb_gs_x86_64:
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m_gpr_x86_64.regs[_REG_GS] = reg_value.GetAsUInt64();
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break;
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case lldb_ss_x86_64:
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m_gpr_x86_64.regs[_REG_SS] = reg_value.GetAsUInt64();
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break;
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case lldb_ds_x86_64:
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m_gpr_x86_64.regs[_REG_DS] = reg_value.GetAsUInt64();
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break;
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case lldb_es_x86_64:
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m_gpr_x86_64.regs[_REG_ES] = reg_value.GetAsUInt64();
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break;
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}
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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__)
|