[llvm] r338447 - [DWARF] Support for .debug_addr (consumer)
David Blaikie via llvm-commits
llvm-commits at lists.llvm.org
Tue Aug 7 17:06:48 PDT 2018
Also I'm not sure we closed out some of the discussions in review:
I still find it a bit odd/surprising taht this prints a header for the
pre-standard DWARFv4 debug_addr section printing, when that section doesn't
have a header.
Also the [] around the list of addresses (and the "Addrs:" prefix) seem a
bit weird compared to the way other lists are dumped in llvm-dwarfdump
(don't generally have wrappers or headers beyond the contribution header,
potentially (if there is one))
For example debug_ranges (OK, admittedly its curretn output could have some
improvements) just prints pairs and then "<End of list>" - rather than
separate chunks, because debug_ranges (old/v4 version) doesn't have
separators between chunks of the list. Printing debug_addr (pre-v5) in a
similar way, maybe with some improvements, would probably be nice.
Also, what's the verbose output mean? I don't quite understand the two
addresses printed on each line ("X => Y") - could you explain it?
On Tue, Jul 31, 2018 at 3:19 PM Victor Leschuk via llvm-commits <
llvm-commits at lists.llvm.org> wrote:
> Author: vleschuk
> Date: Tue Jul 31 15:19:19 2018
> New Revision: 338447
>
> URL: http://llvm.org/viewvc/llvm-project?rev=338447&view=rev
> Log:
> [DWARF] Support for .debug_addr (consumer)
>
> This patch implements basic support for parsing
> and dumping DWARFv5 .debug_addr section.
>
>
> Added:
> llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugAddr.h
> llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugAddr.cpp
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr.s
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_64bit_address.s
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_absent.s
>
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_mismatch.s
>
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_not_multiple.s
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf4.s
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf64.s
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_empty.s
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_invalid_addr_size.s
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_segment_selector.s
>
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_small_length_field.s
>
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_length_field.s
>
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_section.s
>
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_unsupported_version.s
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_version_mismatch.s
> Modified:
> llvm/trunk/include/llvm/BinaryFormat/Dwarf.def
> llvm/trunk/include/llvm/DebugInfo/DIContext.h
> llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFContext.h
> llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDataExtractor.h
> llvm/trunk/lib/DebugInfo/DWARF/CMakeLists.txt
> llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp
>
> Modified: llvm/trunk/include/llvm/BinaryFormat/Dwarf.def
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/BinaryFormat/Dwarf.def?rev=338447&r1=338446&r2=338447&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/BinaryFormat/Dwarf.def (original)
> +++ llvm/trunk/include/llvm/BinaryFormat/Dwarf.def Tue Jul 31 15:19:19 2018
> @@ -856,6 +856,7 @@ HANDLE_DW_UT(0x06, split_type)
> // TODO: Add Mach-O and COFF names.
> // Official DWARF sections.
> HANDLE_DWARF_SECTION(DebugAbbrev, ".debug_abbrev", "debug-abbrev")
> +HANDLE_DWARF_SECTION(DebugAddr, ".debug_addr", "debug-addr")
> HANDLE_DWARF_SECTION(DebugAranges, ".debug_aranges", "debug-aranges")
> HANDLE_DWARF_SECTION(DebugInfo, ".debug_info", "debug-info")
> HANDLE_DWARF_SECTION(DebugTypes, ".debug_types", "debug-types")
>
> Modified: llvm/trunk/include/llvm/DebugInfo/DIContext.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/DIContext.h?rev=338447&r1=338446&r2=338447&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/DebugInfo/DIContext.h (original)
> +++ llvm/trunk/include/llvm/DebugInfo/DIContext.h Tue Jul 31 15:19:19 2018
> @@ -154,6 +154,8 @@ enum DIDumpType : unsigned {
> struct DIDumpOptions {
> unsigned DumpType = DIDT_All;
> unsigned RecurseDepth = -1U;
> + uint16_t Version = 0; // DWARF version to assume when extracting.
> + uint8_t AddrSize = 4; // Address byte size to assume when extracting.
> bool ShowAddresses = true;
> bool ShowChildren = false;
> bool ShowParents = false;
>
> Modified: llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFContext.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFContext.h?rev=338447&r1=338446&r2=338447&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFContext.h (original)
> +++ llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFContext.h Tue Jul 31
> 15:19:19 2018
> @@ -323,6 +323,10 @@ public:
> /// have initialized the relevant target descriptions.
> Error loadRegisterInfo(const object::ObjectFile &Obj);
>
> + /// Get address size from CUs.
> + /// TODO: refactor compile_units() to make this const.
> + uint8_t getCUAddrSize();
> +
> private:
> /// Return the compile unit which contains instruction with provided
> /// address.
>
> Modified: llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDataExtractor.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDataExtractor.h?rev=338447&r1=338446&r2=338447&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDataExtractor.h (original)
> +++ llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDataExtractor.h Tue Jul
> 31 15:19:19 2018
> @@ -51,6 +51,8 @@ public:
> /// reflect the absolute address of this pointer.
> Optional<uint64_t> getEncodedPointer(uint32_t *Offset, uint8_t Encoding,
> uint64_t AbsPosOffset = 0) const;
> +
> + size_t size() const { return Section == nullptr ? 0 :
> Section->Data.size(); }
> };
>
> } // end namespace llvm
>
> Added: llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugAddr.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugAddr.h?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugAddr.h (added)
> +++ llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugAddr.h Tue Jul 31
> 15:19:19 2018
> @@ -0,0 +1,98 @@
> +//===- DWARFDebugAddr.h -------------------------------------*- C++
> -*-===//
> +//
> +// The LLVM Compiler Infrastructure
> +//
> +// This file is distributed under the University of Illinois Open Source
> +// License. See LICENSE.TXT for details.
> +//
>
> +//===------------------------------------------------------------------===//
> +
> +#ifndef LLVM_DEBUGINFO_DWARFDEBUGADDR_H
> +#define LLVM_DEBUGINFO_DWARFDEBUGADDR_H
> +
> +#include "llvm/BinaryFormat/Dwarf.h"
> +#include "llvm/DebugInfo/DIContext.h"
> +#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
> +#include "llvm/Support/Errc.h"
> +#include "llvm/Support/Error.h"
> +#include <cstdint>
> +#include <map>
> +#include <vector>
> +
> +namespace llvm {
> +
> +class Error;
> +class raw_ostream;
> +
> +/// A class representing an address table as specified in DWARF v5.
> +/// The table consists of a header followed by an array of address values
> from
> +/// .debug_addr section.
> +class DWARFDebugAddrTable {
> +public:
> + struct Header {
> + /// The total length of the entries for this table, not including the
> length
> + /// field itself.
> + uint32_t Length = 0;
> + /// The DWARF version number.
> + uint16_t Version = 5;
> + /// The size in bytes of an address on the target architecture. For
> + /// segmented addressing, this is the size of the offset portion of
> the
> + /// address.
> + uint8_t AddrSize;
> + /// The size in bytes of a segment selector on the target
> architecture.
> + /// If the target system uses a flat address space, this value is 0.
> + uint8_t SegSize = 0;
> + };
> +
> +private:
> + dwarf::DwarfFormat Format;
> + uint32_t HeaderOffset;
> + Header HeaderData;
> + uint32_t DataSize = 0;
> + std::vector<uint64_t> Addrs;
> +
> +public:
> + void clear();
> +
> + /// Extract an entire table, including all addresses.
> + Error extract(DWARFDataExtractor Data, uint32_t *OffsetPtr,
> + uint16_t Version, uint8_t AddrSize,
> + std::function<void(Error)> WarnCallback);
> +
> + uint32_t getHeaderOffset() const { return HeaderOffset; }
> + uint8_t getAddrSize() const { return HeaderData.AddrSize; }
> + void dump(raw_ostream &OS, DIDumpOptions DumpOpts = {}) const;
> +
> + /// Return the address based on a given index.
> + Expected<uint64_t> getAddrEntry(uint32_t Index) const;
> +
> + /// Return the size of the table header including the length
> + /// but not including the addresses.
> + uint8_t getHeaderSize() const {
> + switch (Format) {
> + case dwarf::DwarfFormat::DWARF32:
> + return 8; // 4 + 2 + 1 + 1
> + case dwarf::DwarfFormat::DWARF64:
> + return 16; // 12 + 2 + 1 + 1
> + }
> + llvm_unreachable("Invalid DWARF format (expected DWARF32 or
> DWARF64)");
> + }
> +
> + /// Returns the length of this table, including the length field, or 0
> if the
> + /// length has not been determined (e.g. because the table has not yet
> been
> + /// parsed, or there was a problem in parsing).
> + uint32_t getLength() const;
> +
> + /// Verify that the given length is valid for this table.
> + bool hasValidLength() const { return getLength() != 0; }
> +
> + /// Invalidate Length field to stop further processing.
> + void invalidateLength() { HeaderData.Length = 0; }
> +
> + /// Returns the length of the array of addresses.
> + uint32_t getDataSize() const;
> +};
> +
> +} // end namespace llvm
> +
> +#endif // LLVM_DEBUGINFO_DWARFDEBUGADDR_H
>
> Modified: llvm/trunk/lib/DebugInfo/DWARF/CMakeLists.txt
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARF/CMakeLists.txt?rev=338447&r1=338446&r2=338447&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/DebugInfo/DWARF/CMakeLists.txt (original)
> +++ llvm/trunk/lib/DebugInfo/DWARF/CMakeLists.txt Tue Jul 31 15:19:19 2018
> @@ -6,6 +6,7 @@ add_llvm_library(LLVMDebugInfoDWARF
> DWARFContext.cpp
> DWARFDataExtractor.cpp
> DWARFDebugAbbrev.cpp
> + DWARFDebugAddr.cpp
> DWARFDebugArangeSet.cpp
> DWARFDebugAranges.cpp
> DWARFDebugFrame.cpp
>
> Modified: llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp?rev=338447&r1=338446&r2=338447&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp (original)
> +++ llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp Tue Jul 31 15:19:19
> 2018
> @@ -17,6 +17,7 @@
> #include "llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h"
> #include "llvm/DebugInfo/DWARF/DWARFCompileUnit.h"
> #include "llvm/DebugInfo/DWARF/DWARFDebugAbbrev.h"
> +#include "llvm/DebugInfo/DWARF/DWARFDebugAddr.h"
> #include "llvm/DebugInfo/DWARF/DWARFDebugArangeSet.h"
> #include "llvm/DebugInfo/DWARF/DWARFDebugAranges.h"
> #include "llvm/DebugInfo/DWARF/DWARFDebugFrame.h"
> @@ -249,6 +250,36 @@ static void dumpStringOffsetsSection(
> }
> }
>
> +// Dump the .debug_addr section.
> +static void dumpAddrSection(raw_ostream &OS, DWARFDataExtractor &AddrData,
> + DIDumpOptions DumpOpts, uint16_t Version,
> + uint8_t AddrSize) {
> + // TODO: Make this more general: add callback types to Error.h, create
> + // implementation and make all DWARF classes use them.
> + static auto WarnCallback = [](Error Warn) {
> + handleAllErrors(std::move(Warn), [](ErrorInfoBase &Info) {
> + WithColor::warning() << Info.message() << '\n';
> + });
> + };
> + uint32_t Offset = 0;
> + while (AddrData.isValidOffset(Offset)) {
> + DWARFDebugAddrTable AddrTable;
> + uint32_t TableOffset = Offset;
> + if (Error Err = AddrTable.extract(AddrData, &Offset, Version,
> + AddrSize, WarnCallback)) {
> + WithColor::error() << toString(std::move(Err)) << '\n';
> + // Keep going after an error, if we can, assuming that the length
> field
> + // could be read. If it couldn't, stop reading the section.
> + if (!AddrTable.hasValidLength())
> + break;
> + uint64_t Length = AddrTable.getLength();
> + Offset = TableOffset + Length;
> + } else {
> + AddrTable.dump(OS, DumpOpts);
> + }
> + }
> +}
> +
> // Dump the .debug_rnglists or .debug_rnglists.dwo section (DWARF v5).
> static void dumpRnglistsSection(raw_ostream &OS,
> DWARFDataExtractor &rnglistData,
> @@ -455,18 +486,16 @@ void DWARFContext::dump(
> }
> }
>
> + if (shouldDump(Explicit, ".debug_addr", DIDT_ID_DebugAddr,
> + DObj->getAddrSection().Data)) {
> + DWARFDataExtractor AddrData(*DObj, DObj->getAddrSection(),
> + isLittleEndian(), 0);
> + dumpAddrSection(OS, AddrData, DumpOpts, getMaxVersion(),
> getCUAddrSize());
> + }
> +
> if (shouldDump(Explicit, ".debug_ranges", DIDT_ID_DebugRanges,
> DObj->getRangeSection().Data)) {
> - // In fact, different compile units may have different address byte
> - // sizes, but for simplicity we just use the address byte size of the
> - // last compile unit (there is no easy and fast way to associate
> address
> - // range list and the compile unit it describes).
> - // FIXME: savedAddressByteSize seems sketchy.
> - uint8_t savedAddressByteSize = 0;
> - for (const auto &CU : compile_units()) {
> - savedAddressByteSize = CU->getAddressByteSize();
> - break;
> - }
> + uint8_t savedAddressByteSize = getCUAddrSize();
> DWARFDataExtractor rangesData(*DObj, DObj->getRangeSection(),
> isLittleEndian(), savedAddressByteSize);
> uint32_t offset = 0;
> @@ -1584,3 +1613,17 @@ Error DWARFContext::loadRegisterInfo(con
> RegInfo.reset(TheTarget->createMCRegInfo(TT.str()));
> return Error::success();
> }
> +
> +uint8_t DWARFContext::getCUAddrSize() {
> + // In theory, different compile units may have different address byte
> + // sizes, but for simplicity we just use the address byte size of the
> + // last compile unit. In practice the address size field is repeated
> across
> + // various DWARF headers (at least in version 5) to make it easier to
> dump
> + // them independently, not to enable varying the address size.
> + uint8_t Addr = 0;
> + for (const auto &CU : compile_units()) {
> + Addr = CU->getAddressByteSize();
> + break;
> + }
> + return Addr;
> +}
>
> Added: llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugAddr.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugAddr.cpp?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugAddr.cpp (added)
> +++ llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugAddr.cpp Tue Jul 31 15:19:19
> 2018
> @@ -0,0 +1,198 @@
> +//===- DWARFDebugAddr.cpp
> -------------------------------------------------===//
> +//
> +// The LLVM Compiler Infrastructure
> +//
> +// This file is distributed under the University of Illinois Open Source
> +// License. See LICENSE.TXT for details.
> +//
>
> +//===----------------------------------------------------------------------===//
> +
> +#include "llvm/DebugInfo/DWARF/DWARFDebugAddr.h"
> +#include "llvm/BinaryFormat/Dwarf.h"
> +#include "llvm/DebugInfo/DWARF/DWARFUnit.h"
> +
> +using namespace llvm;
> +
> +void DWARFDebugAddrTable::clear() {
> + HeaderData = {};
> + Addrs.clear();
> + invalidateLength();
> +}
> +
> +Error DWARFDebugAddrTable::extract(DWARFDataExtractor Data,
> + uint32_t *OffsetPtr,
> + uint16_t Version,
> + uint8_t AddrSize,
> + std::function<void(Error)>
> WarnCallback) {
> + clear();
> + HeaderOffset = *OffsetPtr;
> + // Read and verify the length field.
> + if (!Data.isValidOffsetForDataOfSize(*OffsetPtr, sizeof(uint32_t)))
> + return createStringError(errc::invalid_argument,
> + "section is not large enough to contain a "
> + ".debug_addr table length at offset 0x%"
> + PRIx32, *OffsetPtr);
> + uint16_t UnitVersion;
> + if (Version == 0) {
> + WarnCallback(createStringError(errc::invalid_argument,
> + "DWARF version is not defined in CU,"
> + " assuming version 5"));
> + UnitVersion = 5;
> + } else {
> + UnitVersion = Version;
> + }
> + // TODO: Add support for DWARF64.
> + Format = dwarf::DwarfFormat::DWARF32;
> + if (UnitVersion >= 5) {
> + HeaderData.Length = Data.getU32(OffsetPtr);
> + if (HeaderData.Length == 0xffffffffu) {
> + invalidateLength();
> + return createStringError(errc::not_supported,
> + "DWARF64 is not supported in .debug_addr at offset 0x%" PRIx32,
> + HeaderOffset);
> + }
> + if (HeaderData.Length + sizeof(uint32_t) < sizeof(Header)) {
> + uint32_t TmpLength = getLength();
> + invalidateLength();
> + return createStringError(errc::invalid_argument,
> + ".debug_addr table at offset 0x%" PRIx32
> + " has too small length (0x%" PRIx32
> + ") to contain a complete header",
> + HeaderOffset, TmpLength);
> + }
> + uint32_t End = HeaderOffset + getLength();
> + if (!Data.isValidOffsetForDataOfSize(HeaderOffset, End -
> HeaderOffset)) {
> + uint32_t TmpLength = getLength();
> + invalidateLength();
> + return createStringError(errc::invalid_argument,
> + "section is not large enough to contain a .debug_addr table "
> + "of length 0x%" PRIx32 " at offset 0x%" PRIx32,
> + TmpLength, HeaderOffset);
> + }
> +
> + HeaderData.Version = Data.getU16(OffsetPtr);
> + HeaderData.AddrSize = Data.getU8(OffsetPtr);
> + HeaderData.SegSize = Data.getU8(OffsetPtr);
> + DataSize = getDataSize();
> + } else {
> + HeaderData.Version = UnitVersion;
> + HeaderData.AddrSize = AddrSize;
> + // TODO: Support for non-zero SegSize.
> + HeaderData.SegSize = 0;
> + DataSize = Data.size();
> + }
> +
> + // Perform basic validation of the remaining header fields.
> +
> + // We support DWARF version 5 for now as well as pre-DWARF5
> + // implementations of .debug_addr table, which doesn't contain a header
> + // and consists only of a series of addresses.
> + if (HeaderData.Version > 5) {
> + return createStringError(errc::not_supported, "version %" PRIu16
> + " of .debug_addr section at offset 0x%" PRIx32 " is not
> supported",
> + HeaderData.Version, HeaderOffset);
> + }
> + // FIXME: For now we just treat version mismatch as an error,
> + // however the correct way to associate a .debug_addr table
> + // with a .debug_info table is to look at the DW_AT_addr_base
> + // attribute in the info table.
> + if (HeaderData.Version != UnitVersion)
> + return createStringError(errc::invalid_argument,
> + ".debug_addr table at offset 0x%" PRIx32
> + " has version %" PRIu16
> + " which is different from the version suggested"
> + " by the DWARF unit header: %" PRIu16,
> + HeaderOffset, HeaderData.Version, UnitVersion);
> + if (HeaderData.AddrSize != 4 && HeaderData.AddrSize != 8)
> + return createStringError(errc::not_supported,
> + ".debug_addr table at offset 0x%" PRIx32
> + " has unsupported address size %" PRIu8,
> + HeaderOffset, HeaderData.AddrSize);
> + if (HeaderData.AddrSize != AddrSize && AddrSize != 0)
> + return createStringError(errc::invalid_argument,
> + ".debug_addr table at offset 0x%" PRIx32
> + " has address size %" PRIu8
> + " which is different from CU address size %" PRIu8,
> + HeaderOffset, HeaderData.AddrSize, AddrSize);
> +
> + // TODO: add support for non-zero segment selector size.
> + if (HeaderData.SegSize != 0)
> + return createStringError(errc::not_supported,
> + ".debug_addr table at offset 0x%" PRIx32
> + " has unsupported segment selector size %" PRIu8,
> + HeaderOffset, HeaderData.SegSize);
> + if (DataSize % HeaderData.AddrSize != 0) {
> + invalidateLength();
> + return createStringError(errc::invalid_argument,
> + ".debug_addr table at offset 0x%" PRIx32
> + " contains data of size %" PRIu32
> + " which is not a multiple of addr size %" PRIu8,
> + HeaderOffset, DataSize, HeaderData.AddrSize);
> + }
> + Data.setAddressSize(HeaderData.AddrSize);
> + uint32_t AddrCount = DataSize / HeaderData.AddrSize;
> + for (uint32_t I = 0; I < AddrCount; ++I)
> + if (HeaderData.AddrSize == 4)
> + Addrs.push_back(Data.getU32(OffsetPtr));
> + else
> + Addrs.push_back(Data.getU64(OffsetPtr));
> + return Error::success();
> +}
> +
> +void DWARFDebugAddrTable::dump(raw_ostream &OS, DIDumpOptions DumpOpts)
> const {
> + if (DumpOpts.Verbose)
> + OS << format("0x%8.8" PRIx32 ": ", HeaderOffset);
> + OS << format("Addr Section: length = 0x%8.8" PRIx32
> + ", version = 0x%4.4" PRIx16 ", "
> + "addr_size = 0x%2.2" PRIx8 ", seg_size = 0x%2.2" PRIx8
> "\n",
> + HeaderData.Length, HeaderData.Version, HeaderData.AddrSize,
> + HeaderData.SegSize);
> +
> + static const char *Fmt32 = "0x%8.8" PRIx32;
> + static const char *Fmt64 = "0x%16.16" PRIx64;
> + std::string AddrFmt = "\n";
> + std::string AddrFmtVerbose = " => ";
> + if (HeaderData.AddrSize == 4) {
> + AddrFmt.append(Fmt32);
> + AddrFmtVerbose.append(Fmt32);
> + }
> + else {
> + AddrFmt.append(Fmt64);
> + AddrFmtVerbose.append(Fmt64);
> + }
> +
> + if (Addrs.size() > 0) {
> + OS << "Addrs: [";
> + for (uint64_t Addr : Addrs) {
> + OS << format(AddrFmt.c_str(), Addr);
> + if (DumpOpts.Verbose)
> + OS << format(AddrFmtVerbose.c_str(),
> + Addr + HeaderOffset + sizeof(HeaderData));
> + }
> + OS << "\n]\n";
> + }
> +}
> +
> +Expected<uint64_t> DWARFDebugAddrTable::getAddrEntry(uint32_t Index)
> const {
> + if (Index < Addrs.size())
> + return Addrs[Index];
> + return createStringError(errc::invalid_argument,
> + "Index %" PRIu32 " is out of range of the "
> + ".debug_addr table at offset 0x%" PRIx32,
> + Index, HeaderOffset);
> +}
> +
> +uint32_t DWARFDebugAddrTable::getLength() const {
> + if (HeaderData.Length == 0)
> + return 0;
> + // TODO: DWARF64 support.
> + return HeaderData.Length + sizeof(uint32_t);
> +}
> +
> +uint32_t DWARFDebugAddrTable::getDataSize() const {
> + if (DataSize != 0)
> + return DataSize;
> + if (getLength() == 0)
> + return 0;
> + return getLength() - getHeaderSize();
> +}
>
> Added: llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr.s?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr.s (added)
> +++ llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr.s Tue Jul 31
> 15:19:19 2018
> @@ -0,0 +1,38 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o %t.o
> +# RUN: llvm-dwarfdump -debug-addr %t.o | FileCheck %s
> +
> +# CHECK: .debug_addr contents
> +
> +# CHECK-NEXT: length = 0x0000000c, version = 0x0005, addr_size =
> 0x04, seg_size = 0x00
> +# CHECK-NEXT: Addrs: [
> +# CHECK-NEXT: 0x00000000
> +# CHECK-NEXT: 0x00000001
> +# CHECK-NEXT: ]
> +# CHECK-NEXT: length = 0x00000004, version = 0x0005, addr_size =
> 0x04, seg_size = 0x00
> +# CHECK-NOT: {{.}}
> +
> + .section .debug_abbrev,"", at progbits
> + .byte 1 # Abbreviation Code
> + .section .debug_info,"", at progbits
> +.Lcu_begin0:
> + .long 8 # Length of Unit
> + .short 5 # DWARF version number
> + .byte 1 # DWARF unit type
> + .byte 4 # Address Size (in bytes)
> + .long .debug_abbrev # Offset Into Abbrev. Section
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 12 # unit_length = .short + .byte + .byte + .long + .long
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr1:
> + .long 4 # unit_length = .short + .byte + .byte
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
>
> Added: llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_64bit_address.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_64bit_address.s?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_64bit_address.s
> (added)
> +++ llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_64bit_address.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,29 @@
> +# RUN: llvm-mc %s -filetype obj -triple x86_64-pc-linux -o %t.o
> +# RUN: llvm-dwarfdump -debug-addr %t.o | FileCheck %s
> +
> +# CHECK: .debug_addr contents
> +# CHECK-NEXT: length = 0x00000014, version = 0x0005, addr_size =
> 0x08, seg_size = 0x00
> +# CHECK-NEXT: Addrs: [
> +# CHECK-NEXT: 0x0000000100000000
> +# CHECK-NEXT: 0x0000000100000001
> +# CHECK-NEXT: ]
> +# CHECK-NOT: {{.}}
> +
> + .section .debug_abbrev,"", at progbits
> + .byte 1 # Abbreviation Code
> + .section .debug_info,"", at progbits
> +.Lcu_begin0:
> + .long 8 # Length of Unit
> + .short 5 # DWARF version number
> + .byte 1 # DWARF unit type
> + .byte 8 # Address Size (in bytes)
> + .long .debug_abbrev # Offset Into Abbrev. Section
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 20 # unit_length = .short + .byte + .byte + .quad + .quad
> + .short 5 # version
> + .byte 8 # address_size
> + .byte 0 # segment_selector_size
> + .quad 0x0000000100000000
> + .quad 0x0000000100000001
>
> Added: llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_absent.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_absent.s?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_absent.s (added)
> +++ llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_absent.s Tue Jul
> 31 15:19:19 2018
> @@ -0,0 +1,4 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2>&1 | FileCheck %s
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: {{.}}
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_mismatch.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_mismatch.s?rev=338447&view=auto
>
> ==============================================================================
> ---
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_mismatch.s
> (added)
> +++
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_mismatch.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,42 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# ERR: .debug_addr table at offset 0x0 has address size 8 which is
> different from CU address size 4
> +# ERR-NOT: {{.}}
> +
> +# CHECK: .debug_addr contents
> +# CHECK-NEXT: length = 0x0000000c, version = 0x0005, addr_size =
> 0x04, seg_size = 0x00
> +# CHECK-NEXT: Addrs: [
> +# CHECK-NEXT: 0x00000000
> +# CHECK-NEXT: 0x00000001
> +# CHECK-NEXT: ]
> +# CHECK-NOT: {{.}}
> +
> + .section .debug_abbrev,"", at progbits
> + .byte 1 # Abbreviation Code
> + .section .debug_info,"", at progbits
> +.Lcu_begin0:
> + .long 8 # Length of Unit
> + .short 5 # DWARF version number
> + .byte 1 # DWARF unit type
> + .byte 4 # Address Size (in bytes)
> + .long .debug_abbrev # Offset Into Abbrev. Section
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 12 # unit_length = .short + .byte + .byte + .long + .long
> + .short 5 # version
> + .byte 8 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr1:
> + .long 12 # unit_length = .short + .byte + .byte + .long + .long
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_not_multiple.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_not_multiple.s?rev=338447&view=auto
>
> ==============================================================================
> ---
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_not_multiple.s
> (added)
> +++
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_address_size_not_multiple.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,18 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: {{.}}
> +# ERR: .debug_addr table at offset 0x0 contains data of size 7 which is
> not a multiple of addr size 4
> +# ERR-NOT: {{.}}
> +
> +# data size is not multiple of address_size
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 11 # unit_length = .short + .byte + .byte + .long + .long - 1
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
>
> Added: llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf4.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf4.s?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf4.s (added)
> +++ llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf4.s Tue Jul
> 31 15:19:19 2018
> @@ -0,0 +1,20 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o %t.o
> +# RUN: llvm-dwarfdump --debug-addr %t.o | FileCheck %s
> +
> +# CHECK: .debug_addr contents
> +# CHECK-NEXT: length = 0x00000000, version = 0x0004, addr_size =
> 0x04, seg_size = 0x00
> +# CHECK-NEXT: Addrs: [
> +# CHECK-NEXT: 0x00000000
> +# CHECK-NEXT: 0x00000001
> +
> + .section .debug_abbrev,"", at progbits
> + .byte 1 # Abbreviation Code
> + .section .debug_info,"", at progbits
> +.Lcu_begin0:
> + .long 7 # Length of Unit
> + .short 4 # DWARF version number
> + .long .debug_abbrev # Offset Into Abbrev. Section
> + .byte 4 # Address Size (in bytes)
> + .section .debug_addr,"", at progbits
> + .long 0x00000000
> + .long 0x00000001
>
> Added: llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf64.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf64.s?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf64.s (added)
> +++ llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_dwarf64.s Tue Jul
> 31 15:19:19 2018
> @@ -0,0 +1,19 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: {{.}}
> +# ERR: DWARF64 is not supported in .debug_addr at offset 0x0
> +# ERR-NOT: {{.}}
> +
> +# DWARF64 table
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 0xffffffff # unit_length DWARF64 mark
> + .quad 12 # unit_length
> + .short 5 # version
> + .byte 3 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
>
> Added: llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_empty.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_empty.s?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_empty.s (added)
> +++ llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_empty.s Tue Jul 31
> 15:19:19 2018
> @@ -0,0 +1,7 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - | FileCheck %s
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: Addr
> +# CHECK-NOT: error:
> +
> +.section .debug_addr,"", at progbits
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_invalid_addr_size.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_invalid_addr_size.s?rev=338447&view=auto
>
> ==============================================================================
> ---
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_invalid_addr_size.s
> (added)
> +++
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_invalid_addr_size.s Tue
> Jul 31 15:19:19 2018
> @@ -0,0 +1,18 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: {{.}}
> +# ERR: unsupported address size 3
> +# ERR-NOT: {{.}}
> +
> +# invalid addr size
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 12 # unit_length = .short + .byte + .byte + .long + .long
> + .short 5 # version
> + .byte 3 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_segment_selector.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_segment_selector.s?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_segment_selector.s
> (added)
> +++ llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_segment_selector.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,17 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: {{.}}
> +# ERR: .debug_addr table at offset 0x0 has unsupported segment selector
> size 1
> +# ERR-NOT: {{.}}
> +
> +# non-zero segment_selector_size
> +# TODO: make this valid
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 4 # unit_length = .short + .byte + .byte
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 1 # segment_selector_size
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_small_length_field.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_small_length_field.s?rev=338447&view=auto
>
> ==============================================================================
> ---
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_small_length_field.s
> (added)
> +++
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_small_length_field.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,18 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: {{.}}
> +# ERR: .debug_addr table at offset 0x0 has too small length (0x5) to
> contain a complete header
> +# ERR-NOT: {{.}}
> +
> +# too small length value
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 1 # unit_length
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_length_field.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_length_field.s?rev=338447&view=auto
>
> ==============================================================================
> ---
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_length_field.s
> (added)
> +++
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_length_field.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,13 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: {{.}}
> +# ERR: section is not large enough to contain a .debug_addr table length
> at offset 0x0
> +# ERR-NOT: {{.}}
> +
> +# too small section to contain length field
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .short 1 # unit_length
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_section.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_section.s?rev=338447&view=auto
>
> ==============================================================================
> ---
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_section.s
> (added)
> +++
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_too_small_for_section.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,16 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# CHECK: .debug_addr contents:
> +# CHECK-NOT: {{.}}
> +# ERR: section is not large enough to contain a .debug_addr table of
> length 0x10 at offset 0x0
> +# ERR-NOT: {{.}}
> +
> +# too small section to contain section of given length
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 12 # unit_length
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_unsupported_version.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_unsupported_version.s?rev=338447&view=auto
>
> ==============================================================================
> ---
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_unsupported_version.s
> (added)
> +++
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_unsupported_version.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,42 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# ERR: version 6 of .debug_addr section at offset 0x0 is not supported
> +# ERR-NOT: {{.}}
> +
> +# CHECK: .debug_addr contents
> +# CHECK-NEXT: length = 0x0000000c, version = 0x0005, addr_size =
> 0x04, seg_size = 0x00
> +# CHECK-NEXT: Addrs: [
> +# CHECK-NEXT: 0x00000002
> +# CHECK-NEXT: 0x00000003
> +# CHECK-NEXT: ]
> +# CHECK-NOT: {{.}}
> +
> + .section .debug_abbrev,"", at progbits
> + .byte 1 # Abbreviation Code
> + .section .debug_info,"", at progbits
> +.Lcu_begin0:
> + .long 8 # Length of Unit
> + .short 5 # DWARF version number
> + .byte 1 # DWARF unit type
> + .byte 4 # Address Size (in bytes)
> + .long .debug_abbrev # Offset Into Abbrev. Section
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 12 # unit_length = .short + .byte + .byte + .long + .long
> + .short 6 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr1:
> + .long 12 # unit_length = .short + .byte + .byte + .long + .long
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000002
> + .long 0x00000003
>
> Added:
> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_version_mismatch.s
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_version_mismatch.s?rev=338447&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_version_mismatch.s
> (added)
> +++ llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_addr_version_mismatch.s
> Tue Jul 31 15:19:19 2018
> @@ -0,0 +1,42 @@
> +# RUN: llvm-mc %s -filetype obj -triple i386-pc-linux -o - | \
> +# RUN: llvm-dwarfdump -debug-addr - 2> %t.err | FileCheck %s
> +# RUN: FileCheck %s -input-file %t.err -check-prefix=ERR
> +
> +# ERR: .debug_addr table at offset 0x0 has version 4 which is different
> from the version suggested by the DWARF unit header: 5
> +# ERR-NOT: {{.}}
> +
> +# CHECK: .debug_addr contents
> +# CHECK-NEXT: length = 0x0000000c, version = 0x0005, addr_size =
> 0x04, seg_size = 0x00
> +# CHECK-NEXT: Addrs: [
> +# CHECK-NEXT: 0x00000000
> +# CHECK-NEXT: 0x00000001
> +# CHECK-NEXT: ]
> +# CHECK-NOT: {{.}}
> +
> + .section .debug_abbrev,"", at progbits
> + .byte 1 # Abbreviation Code
> + .section .debug_info,"", at progbits
> +.Lcu_begin0:
> + .long 8 # Length of Unit
> + .short 5 # DWARF version number
> + .byte 1 # DWARF unit type
> + .byte 4 # Address Size (in bytes)
> + .long .debug_abbrev # Offset Into Abbrev. Section
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr0:
> + .long 12 # unit_length = .short + .byte + .byte + .long + .long
> + .short 4 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
> +
> + .section .debug_addr,"", at progbits
> +.Ldebug_addr1:
> + .long 12 # unit_length = .short + .byte + .byte + .long + .long
> + .short 5 # version
> + .byte 4 # address_size
> + .byte 0 # segment_selector_size
> + .long 0x00000000
> + .long 0x00000001
>
>
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>
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