ThreadElfCore.cpp revision 327952
1254721Semaste//===-- ThreadElfCore.cpp --------------------------------------*- C++ -*-===// 2254721Semaste// 3254721Semaste// The LLVM Compiler Infrastructure 4254721Semaste// 5254721Semaste// This file is distributed under the University of Illinois Open Source 6254721Semaste// License. See LICENSE.TXT for details. 7254721Semaste// 8254721Semaste//===----------------------------------------------------------------------===// 9254721Semaste 10254721Semaste#include "lldb/Target/RegisterContext.h" 11254721Semaste#include "lldb/Target/StopInfo.h" 12254721Semaste#include "lldb/Target/Target.h" 13254721Semaste#include "lldb/Target/Unwind.h" 14321369Sdim#include "lldb/Utility/DataExtractor.h" 15321369Sdim#include "lldb/Utility/Log.h" 16254721Semaste 17280031Sdim#include "Plugins/Process/Utility/RegisterContextFreeBSD_i386.h" 18280031Sdim#include "Plugins/Process/Utility/RegisterContextFreeBSD_mips64.h" 19280031Sdim#include "Plugins/Process/Utility/RegisterContextFreeBSD_powerpc.h" 20280031Sdim#include "Plugins/Process/Utility/RegisterContextFreeBSD_x86_64.h" 21327952Sdim#include "Plugins/Process/Utility/RegisterContextLinux_i386.h" 22327952Sdim#include "Plugins/Process/Utility/RegisterContextLinux_mips.h" 23321369Sdim#include "Plugins/Process/Utility/RegisterContextLinux_mips64.h" 24327952Sdim#ifdef LLDB_ENABLE_ALL 25327952Sdim#include "Plugins/Process/Utility/RegisterContextLinux_s390x.h" 26327952Sdim#endif // LLDB_ENABLE_ALL 27314564Sdim#include "Plugins/Process/Utility/RegisterContextLinux_x86_64.h" 28321369Sdim#include "Plugins/Process/Utility/RegisterContextNetBSD_x86_64.h" 29321369Sdim#include "Plugins/Process/Utility/RegisterContextOpenBSD_i386.h" 30321369Sdim#include "Plugins/Process/Utility/RegisterContextOpenBSD_x86_64.h" 31321369Sdim#include "Plugins/Process/Utility/RegisterInfoPOSIX_arm.h" 32314564Sdim#include "Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h" 33327952Sdim#include "Plugins/Process/Utility/RegisterInfoPOSIX_ppc64le.h" 34314564Sdim#include "ProcessElfCore.h" 35288943Sdim#include "RegisterContextPOSIXCore_arm.h" 36288943Sdim#include "RegisterContextPOSIXCore_arm64.h" 37258054Semaste#include "RegisterContextPOSIXCore_mips64.h" 38280031Sdim#include "RegisterContextPOSIXCore_powerpc.h" 39327952Sdim#include "RegisterContextPOSIXCore_ppc64le.h" 40327952Sdim#ifdef LLDB_ENABLE_ALL 41327952Sdim#include "RegisterContextPOSIXCore_s390x.h" 42327952Sdim#endif // LLDB_ENABLE_ALL 43258054Semaste#include "RegisterContextPOSIXCore_x86_64.h" 44314564Sdim#include "ThreadElfCore.h" 45254721Semaste 46254721Semasteusing namespace lldb; 47254721Semasteusing namespace lldb_private; 48254721Semaste 49254721Semaste//---------------------------------------------------------------------- 50254721Semaste// Construct a Thread object with given data 51254721Semaste//---------------------------------------------------------------------- 52314564SdimThreadElfCore::ThreadElfCore(Process &process, const ThreadData &td) 53314564Sdim : Thread(process, td.tid), m_thread_name(td.name), m_thread_reg_ctx_sp(), 54327952Sdim m_signo(td.signo), m_gpregset_data(td.gpregset), m_notes(td.notes) {} 55254721Semaste 56314564SdimThreadElfCore::~ThreadElfCore() { DestroyThread(); } 57254721Semaste 58314564Sdimvoid ThreadElfCore::RefreshStateAfterStop() { 59314564Sdim GetRegisterContext()->InvalidateIfNeeded(false); 60254721Semaste} 61254721Semaste 62314564Sdimvoid ThreadElfCore::ClearStackFrames() { 63314564Sdim Unwind *unwinder = GetUnwinder(); 64314564Sdim if (unwinder) 65314564Sdim unwinder->Clear(); 66314564Sdim Thread::ClearStackFrames(); 67254721Semaste} 68254721Semaste 69314564SdimRegisterContextSP ThreadElfCore::GetRegisterContext() { 70314564Sdim if (m_reg_context_sp.get() == NULL) { 71314564Sdim m_reg_context_sp = CreateRegisterContextForFrame(NULL); 72314564Sdim } 73314564Sdim return m_reg_context_sp; 74254721Semaste} 75254721Semaste 76254721SemasteRegisterContextSP 77314564SdimThreadElfCore::CreateRegisterContextForFrame(StackFrame *frame) { 78314564Sdim RegisterContextSP reg_ctx_sp; 79314564Sdim uint32_t concrete_frame_idx = 0; 80314564Sdim Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD)); 81254721Semaste 82314564Sdim if (frame) 83314564Sdim concrete_frame_idx = frame->GetConcreteFrameIndex(); 84254721Semaste 85314564Sdim if (concrete_frame_idx == 0) { 86314564Sdim if (m_thread_reg_ctx_sp) 87314564Sdim return m_thread_reg_ctx_sp; 88254721Semaste 89314564Sdim ProcessElfCore *process = static_cast<ProcessElfCore *>(GetProcess().get()); 90314564Sdim ArchSpec arch = process->GetArchitecture(); 91314564Sdim RegisterInfoInterface *reg_interface = NULL; 92262528Semaste 93314564Sdim switch (arch.GetTriple().getOS()) { 94314564Sdim case llvm::Triple::FreeBSD: { 95314564Sdim switch (arch.GetMachine()) { 96314564Sdim case llvm::Triple::aarch64: 97314564Sdim reg_interface = new RegisterInfoPOSIX_arm64(arch); 98314564Sdim break; 99314564Sdim case llvm::Triple::arm: 100321369Sdim reg_interface = new RegisterInfoPOSIX_arm(arch); 101314564Sdim break; 102314564Sdim case llvm::Triple::ppc: 103314564Sdim reg_interface = new RegisterContextFreeBSD_powerpc32(arch); 104314564Sdim break; 105314564Sdim case llvm::Triple::ppc64: 106314564Sdim reg_interface = new RegisterContextFreeBSD_powerpc64(arch); 107314564Sdim break; 108314564Sdim case llvm::Triple::mips64: 109314564Sdim reg_interface = new RegisterContextFreeBSD_mips64(arch); 110314564Sdim break; 111314564Sdim case llvm::Triple::x86: 112314564Sdim reg_interface = new RegisterContextFreeBSD_i386(arch); 113314564Sdim break; 114314564Sdim case llvm::Triple::x86_64: 115314564Sdim reg_interface = new RegisterContextFreeBSD_x86_64(arch); 116314564Sdim break; 117314564Sdim default: 118314564Sdim break; 119314564Sdim } 120314564Sdim break; 121314564Sdim } 122276479Sdim 123321369Sdim case llvm::Triple::NetBSD: { 124321369Sdim switch (arch.GetMachine()) { 125321369Sdim case llvm::Triple::x86_64: 126321369Sdim reg_interface = new RegisterContextNetBSD_x86_64(arch); 127321369Sdim break; 128321369Sdim default: 129321369Sdim break; 130321369Sdim } 131321369Sdim break; 132321369Sdim } 133321369Sdim 134314564Sdim case llvm::Triple::Linux: { 135314564Sdim switch (arch.GetMachine()) { 136314564Sdim case llvm::Triple::arm: 137321369Sdim reg_interface = new RegisterInfoPOSIX_arm(arch); 138314564Sdim break; 139314564Sdim case llvm::Triple::aarch64: 140314564Sdim reg_interface = new RegisterInfoPOSIX_arm64(arch); 141314564Sdim break; 142321369Sdim case llvm::Triple::mipsel: 143321369Sdim case llvm::Triple::mips: 144321369Sdim reg_interface = new RegisterContextLinux_mips(arch); 145321369Sdim break; 146321369Sdim case llvm::Triple::mips64el: 147321369Sdim case llvm::Triple::mips64: 148321369Sdim reg_interface = new RegisterContextLinux_mips64(arch); 149321369Sdim break; 150327952Sdim case llvm::Triple::ppc64le: 151327952Sdim reg_interface = new RegisterInfoPOSIX_ppc64le(arch); 152327952Sdim break; 153327952Sdim#ifdef LLDB_ENABLE_ALL 154327952Sdim case llvm::Triple::systemz: 155327952Sdim reg_interface = new RegisterContextLinux_s390x(arch); 156327952Sdim break; 157327952Sdim#endif // LLDB_ENABLE_ALL 158314564Sdim case llvm::Triple::x86: 159314564Sdim reg_interface = new RegisterContextLinux_i386(arch); 160314564Sdim break; 161314564Sdim case llvm::Triple::x86_64: 162314564Sdim reg_interface = new RegisterContextLinux_x86_64(arch); 163314564Sdim break; 164314564Sdim default: 165314564Sdim break; 166314564Sdim } 167314564Sdim break; 168314564Sdim } 169262528Semaste 170321369Sdim case llvm::Triple::OpenBSD: { 171321369Sdim switch (arch.GetMachine()) { 172321369Sdim case llvm::Triple::aarch64: 173321369Sdim reg_interface = new RegisterInfoPOSIX_arm64(arch); 174321369Sdim break; 175321369Sdim case llvm::Triple::arm: 176321369Sdim reg_interface = new RegisterInfoPOSIX_arm(arch); 177321369Sdim break; 178321369Sdim case llvm::Triple::x86: 179321369Sdim reg_interface = new RegisterContextOpenBSD_i386(arch); 180321369Sdim break; 181321369Sdim case llvm::Triple::x86_64: 182321369Sdim reg_interface = new RegisterContextOpenBSD_x86_64(arch); 183321369Sdim break; 184321369Sdim default: 185321369Sdim break; 186321369Sdim } 187321369Sdim break; 188321369Sdim } 189321369Sdim 190314564Sdim default: 191314564Sdim break; 192314564Sdim } 193262528Semaste 194314564Sdim if (!reg_interface) { 195314564Sdim if (log) 196314564Sdim log->Printf("elf-core::%s:: Architecture(%d) or OS(%d) not supported", 197314564Sdim __FUNCTION__, arch.GetMachine(), arch.GetTriple().getOS()); 198314564Sdim assert(false && "Architecture or OS not supported"); 199314564Sdim } 200262528Semaste 201314564Sdim switch (arch.GetMachine()) { 202314564Sdim case llvm::Triple::aarch64: 203314564Sdim m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_arm64( 204327952Sdim *this, reg_interface, m_gpregset_data, m_notes)); 205314564Sdim break; 206314564Sdim case llvm::Triple::arm: 207314564Sdim m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_arm( 208327952Sdim *this, reg_interface, m_gpregset_data, m_notes)); 209314564Sdim break; 210321369Sdim case llvm::Triple::mipsel: 211321369Sdim case llvm::Triple::mips: 212321369Sdim m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_mips64( 213327952Sdim *this, reg_interface, m_gpregset_data, m_notes)); 214321369Sdim break; 215314564Sdim case llvm::Triple::mips64: 216321369Sdim case llvm::Triple::mips64el: 217314564Sdim m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_mips64( 218327952Sdim *this, reg_interface, m_gpregset_data, m_notes)); 219314564Sdim break; 220314564Sdim case llvm::Triple::ppc: 221314564Sdim case llvm::Triple::ppc64: 222314564Sdim m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_powerpc( 223327952Sdim *this, reg_interface, m_gpregset_data, m_notes)); 224314564Sdim break; 225327952Sdim case llvm::Triple::ppc64le: 226327952Sdim m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_ppc64le( 227327952Sdim *this, reg_interface, m_gpregset_data, m_notes)); 228327952Sdim break; 229327952Sdim#ifdef LLDB_ENABLE_ALL 230327952Sdim case llvm::Triple::systemz: 231327952Sdim m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_s390x( 232327952Sdim *this, reg_interface, m_gpregset_data, m_notes)); 233327952Sdim break; 234327952Sdim#endif // LLDB_ENABLE_ALL 235314564Sdim case llvm::Triple::x86: 236314564Sdim case llvm::Triple::x86_64: 237314564Sdim m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_x86_64( 238327952Sdim *this, reg_interface, m_gpregset_data, m_notes)); 239314564Sdim break; 240314564Sdim default: 241314564Sdim break; 242314564Sdim } 243262528Semaste 244314564Sdim reg_ctx_sp = m_thread_reg_ctx_sp; 245314564Sdim } else if (m_unwinder_ap.get()) { 246314564Sdim reg_ctx_sp = m_unwinder_ap->CreateRegisterContextForFrame(frame); 247314564Sdim } 248314564Sdim return reg_ctx_sp; 249254721Semaste} 250254721Semaste 251314564Sdimbool ThreadElfCore::CalculateStopInfo() { 252314564Sdim ProcessSP process_sp(GetProcess()); 253314564Sdim if (process_sp) { 254314564Sdim SetStopInfo(StopInfo::CreateStopReasonWithSignal(*this, m_signo)); 255314564Sdim return true; 256314564Sdim } 257314564Sdim return false; 258254721Semaste} 259254721Semaste 260254721Semaste//---------------------------------------------------------------- 261254721Semaste// Parse PRSTATUS from NOTE entry 262254721Semaste//---------------------------------------------------------------- 263314564SdimELFLinuxPrStatus::ELFLinuxPrStatus() { 264314564Sdim memset(this, 0, sizeof(ELFLinuxPrStatus)); 265254721Semaste} 266254721Semaste 267327952Sdimsize_t ELFLinuxPrStatus::GetSize(const lldb_private::ArchSpec &arch) { 268321369Sdim constexpr size_t mips_linux_pr_status_size_o32 = 96; 269321369Sdim constexpr size_t mips_linux_pr_status_size_n32 = 72; 270321369Sdim if (arch.IsMIPS()) { 271321369Sdim std::string abi = arch.GetTargetABI(); 272321369Sdim assert(!abi.empty() && "ABI is not set"); 273321369Sdim if (!abi.compare("n64")) 274321369Sdim return sizeof(ELFLinuxPrStatus); 275321369Sdim else if (!abi.compare("o32")) 276321369Sdim return mips_linux_pr_status_size_o32; 277321369Sdim // N32 ABI 278321369Sdim return mips_linux_pr_status_size_n32; 279321369Sdim } 280321369Sdim switch (arch.GetCore()) { 281321369Sdim case lldb_private::ArchSpec::eCore_s390x_generic: 282321369Sdim case lldb_private::ArchSpec::eCore_x86_64_x86_64: 283327952Sdim case lldb_private::ArchSpec::eCore_ppc64le_generic: 284321369Sdim return sizeof(ELFLinuxPrStatus); 285321369Sdim case lldb_private::ArchSpec::eCore_x86_32_i386: 286321369Sdim case lldb_private::ArchSpec::eCore_x86_32_i486: 287321369Sdim return 72; 288321369Sdim default: 289321369Sdim return 0; 290321369Sdim } 291321369Sdim} 292321369Sdim 293327952SdimStatus ELFLinuxPrStatus::Parse(const DataExtractor &data, 294327952Sdim const ArchSpec &arch) { 295321369Sdim Status error; 296314564Sdim if (GetSize(arch) > data.GetByteSize()) { 297314564Sdim error.SetErrorStringWithFormat( 298314564Sdim "NT_PRSTATUS size should be %zu, but the remaining bytes are: %" PRIu64, 299314564Sdim GetSize(arch), data.GetByteSize()); 300314564Sdim return error; 301314564Sdim } 302314564Sdim 303314564Sdim // Read field by field to correctly account for endianess 304314564Sdim // of both the core dump and the platform running lldb. 305314564Sdim offset_t offset = 0; 306314564Sdim si_signo = data.GetU32(&offset); 307314564Sdim si_code = data.GetU32(&offset); 308314564Sdim si_errno = data.GetU32(&offset); 309314564Sdim 310314564Sdim pr_cursig = data.GetU16(&offset); 311314564Sdim offset += 2; // pad 312314564Sdim 313314564Sdim pr_sigpend = data.GetPointer(&offset); 314314564Sdim pr_sighold = data.GetPointer(&offset); 315314564Sdim 316314564Sdim pr_pid = data.GetU32(&offset); 317314564Sdim pr_ppid = data.GetU32(&offset); 318314564Sdim pr_pgrp = data.GetU32(&offset); 319314564Sdim pr_sid = data.GetU32(&offset); 320314564Sdim 321314564Sdim pr_utime.tv_sec = data.GetPointer(&offset); 322314564Sdim pr_utime.tv_usec = data.GetPointer(&offset); 323314564Sdim 324314564Sdim pr_stime.tv_sec = data.GetPointer(&offset); 325314564Sdim pr_stime.tv_usec = data.GetPointer(&offset); 326314564Sdim 327314564Sdim pr_cutime.tv_sec = data.GetPointer(&offset); 328314564Sdim pr_cutime.tv_usec = data.GetPointer(&offset); 329314564Sdim 330314564Sdim pr_cstime.tv_sec = data.GetPointer(&offset); 331314564Sdim pr_cstime.tv_usec = data.GetPointer(&offset); 332314564Sdim 333314564Sdim return error; 334254721Semaste} 335254721Semaste 336254721Semaste//---------------------------------------------------------------- 337254721Semaste// Parse PRPSINFO from NOTE entry 338254721Semaste//---------------------------------------------------------------- 339314564SdimELFLinuxPrPsInfo::ELFLinuxPrPsInfo() { 340314564Sdim memset(this, 0, sizeof(ELFLinuxPrPsInfo)); 341254721Semaste} 342254721Semaste 343327952Sdimsize_t ELFLinuxPrPsInfo::GetSize(const lldb_private::ArchSpec &arch) { 344321369Sdim constexpr size_t mips_linux_pr_psinfo_size_o32_n32 = 128; 345321369Sdim if (arch.IsMIPS()) { 346321369Sdim uint8_t address_byte_size = arch.GetAddressByteSize(); 347321369Sdim if (address_byte_size == 8) 348321369Sdim return sizeof(ELFLinuxPrPsInfo); 349321369Sdim return mips_linux_pr_psinfo_size_o32_n32; 350321369Sdim } 351321369Sdim 352321369Sdim switch (arch.GetCore()) { 353321369Sdim case lldb_private::ArchSpec::eCore_s390x_generic: 354321369Sdim case lldb_private::ArchSpec::eCore_x86_64_x86_64: 355321369Sdim return sizeof(ELFLinuxPrPsInfo); 356321369Sdim case lldb_private::ArchSpec::eCore_x86_32_i386: 357321369Sdim case lldb_private::ArchSpec::eCore_x86_32_i486: 358321369Sdim return 124; 359321369Sdim default: 360321369Sdim return 0; 361321369Sdim } 362321369Sdim} 363321369Sdim 364327952SdimStatus ELFLinuxPrPsInfo::Parse(const DataExtractor &data, 365327952Sdim const ArchSpec &arch) { 366321369Sdim Status error; 367314564Sdim ByteOrder byteorder = data.GetByteOrder(); 368314564Sdim if (GetSize(arch) > data.GetByteSize()) { 369314564Sdim error.SetErrorStringWithFormat( 370314564Sdim "NT_PRPSINFO size should be %zu, but the remaining bytes are: %" PRIu64, 371314564Sdim GetSize(arch), data.GetByteSize()); 372314564Sdim return error; 373314564Sdim } 374314564Sdim size_t size = 0; 375314564Sdim offset_t offset = 0; 376314564Sdim 377314564Sdim pr_state = data.GetU8(&offset); 378314564Sdim pr_sname = data.GetU8(&offset); 379314564Sdim pr_zomb = data.GetU8(&offset); 380314564Sdim pr_nice = data.GetU8(&offset); 381314564Sdim if (data.GetAddressByteSize() == 8) { 382314564Sdim // Word align the next field on 64 bit. 383314564Sdim offset += 4; 384314564Sdim } 385314564Sdim 386314564Sdim pr_flag = data.GetPointer(&offset); 387314564Sdim 388321369Sdim if (arch.IsMIPS()) { 389321369Sdim // The pr_uid and pr_gid is always 32 bit irrespective of platforms 390321369Sdim pr_uid = data.GetU32(&offset); 391321369Sdim pr_gid = data.GetU32(&offset); 392321369Sdim } else { 393314564Sdim // 16 bit on 32 bit platforms, 32 bit on 64 bit platforms 394314564Sdim pr_uid = data.GetMaxU64(&offset, data.GetAddressByteSize() >> 1); 395314564Sdim pr_gid = data.GetMaxU64(&offset, data.GetAddressByteSize() >> 1); 396321369Sdim } 397314564Sdim 398314564Sdim pr_pid = data.GetU32(&offset); 399314564Sdim pr_ppid = data.GetU32(&offset); 400314564Sdim pr_pgrp = data.GetU32(&offset); 401314564Sdim pr_sid = data.GetU32(&offset); 402314564Sdim 403314564Sdim size = 16; 404314564Sdim data.ExtractBytes(offset, size, byteorder, pr_fname); 405314564Sdim offset += size; 406314564Sdim 407314564Sdim size = 80; 408314564Sdim data.ExtractBytes(offset, size, byteorder, pr_psargs); 409314564Sdim offset += size; 410314564Sdim 411314564Sdim return error; 412254721Semaste} 413254721Semaste 414314564Sdim//---------------------------------------------------------------- 415314564Sdim// Parse SIGINFO from NOTE entry 416314564Sdim//---------------------------------------------------------------- 417321369SdimELFLinuxSigInfo::ELFLinuxSigInfo() { memset(this, 0, sizeof(ELFLinuxSigInfo)); } 418321369Sdim 419321369Sdimsize_t ELFLinuxSigInfo::GetSize(const lldb_private::ArchSpec &arch) { 420321369Sdim if (arch.IsMIPS()) 421321369Sdim return sizeof(ELFLinuxSigInfo); 422321369Sdim switch (arch.GetCore()) { 423321369Sdim case lldb_private::ArchSpec::eCore_x86_64_x86_64: 424321369Sdim return sizeof(ELFLinuxSigInfo); 425321369Sdim case lldb_private::ArchSpec::eCore_s390x_generic: 426321369Sdim case lldb_private::ArchSpec::eCore_x86_32_i386: 427321369Sdim case lldb_private::ArchSpec::eCore_x86_32_i486: 428321369Sdim return 12; 429321369Sdim default: 430321369Sdim return 0; 431321369Sdim } 432314564Sdim} 433314564Sdim 434327952SdimStatus ELFLinuxSigInfo::Parse(const DataExtractor &data, const ArchSpec &arch) { 435321369Sdim Status error; 436314564Sdim if (GetSize(arch) > data.GetByteSize()) { 437314564Sdim error.SetErrorStringWithFormat( 438314564Sdim "NT_SIGINFO size should be %zu, but the remaining bytes are: %" PRIu64, 439314564Sdim GetSize(arch), data.GetByteSize()); 440314564Sdim return error; 441314564Sdim } 442314564Sdim 443314564Sdim // Parsing from a 32 bit ELF core file, and populating/reusing the structure 444314564Sdim // properly, because the struct is for the 64 bit version 445314564Sdim offset_t offset = 0; 446314564Sdim si_signo = data.GetU32(&offset); 447314564Sdim si_code = data.GetU32(&offset); 448314564Sdim si_errno = data.GetU32(&offset); 449314564Sdim 450314564Sdim return error; 451314564Sdim} 452