diff options
author | Rui Ueyama <ruiu@google.com> | 2013-09-27 00:07:01 +0000 |
---|---|---|
committer | Rui Ueyama <ruiu@google.com> | 2013-09-27 00:07:01 +0000 |
commit | 0c873adc82a81b0bce317c3e2cb3139e990a0f9e (patch) | |
tree | 5e84958bcbb706131e88776ef82c8fcafbc404c5 | |
parent | deac137da710cd8566b857ee9d1e182d4fd35932 (diff) | |
download | external_llvm-0c873adc82a81b0bce317c3e2cb3139e990a0f9e.zip external_llvm-0c873adc82a81b0bce317c3e2cb3139e990a0f9e.tar.gz external_llvm-0c873adc82a81b0bce317c3e2cb3139e990a0f9e.tar.bz2 |
llvm-objdump: Dump COFF import table if -private-headers option is given.
This is a patch to add capability to llvm-objdump to dump COFF Import Table
entries, so that we can write tests for LLD checking Import Table contents.
llvm-objdump did not print anything but just file name if the format is COFF
and -private-headers option is given. This is a patch adds capability for
dumping DLL Import Table, which is specific to the COFF format.
In this patch I defined a new iterator to iterate over import table entries.
Also added a few functions to COFFObjectFile.cpp to access fields of the entry.
Differential Revision: http://llvm-reviews.chandlerc.com/D1719
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191472 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | include/llvm/Object/COFF.h | 40 | ||||
-rw-r--r-- | lib/Object/COFFObjectFile.cpp | 196 | ||||
-rw-r--r-- | test/tools/llvm-objdump/Inputs/nop.exe.coff-i386 | bin | 0 -> 7680 bytes | |||
-rw-r--r-- | test/tools/llvm-objdump/Inputs/trivial.obj.elf-i386 | bin | 0 -> 449 bytes | |||
-rw-r--r-- | test/tools/llvm-objdump/Inputs/win64-unwind.exe.coff-x86_64 | bin | 0 -> 698 bytes | |||
-rw-r--r-- | test/tools/llvm-objdump/Inputs/win64-unwind.exe.coff-x86_64.asm | 53 | ||||
-rw-r--r-- | test/tools/llvm-objdump/coff-private-headers.test | 9 | ||||
-rw-r--r-- | test/tools/llvm-objdump/disassembly-show-raw.s | 15 | ||||
-rw-r--r-- | test/tools/llvm-objdump/disassembly-show-raw.test | 14 | ||||
-rw-r--r-- | test/tools/llvm-objdump/lit.local.cfg | 4 | ||||
-rw-r--r-- | test/tools/llvm-objdump/win64-unwind-data.s | 106 | ||||
-rw-r--r-- | test/tools/llvm-objdump/win64-unwind-data.test | 52 | ||||
-rw-r--r-- | tools/llvm-objdump/COFFDump.cpp | 46 | ||||
-rw-r--r-- | tools/llvm-objdump/llvm-objdump.cpp | 12 | ||||
-rw-r--r-- | tools/llvm-objdump/llvm-objdump.h | 3 |
15 files changed, 390 insertions, 160 deletions
diff --git a/include/llvm/Object/COFF.h b/include/llvm/Object/COFF.h index cb464ab..e9ea547 100644 --- a/include/llvm/Object/COFF.h +++ b/include/llvm/Object/COFF.h @@ -23,6 +23,8 @@ namespace llvm { class ArrayRef; namespace object { +class ImportDirectoryEntryRef; +typedef content_iterator<ImportDirectoryEntryRef> import_directory_iterator; /// The DOS compatible header at the front of all PE/COFF executables. struct dos_header { @@ -202,6 +204,7 @@ struct coff_aux_section_definition { class COFFObjectFile : public ObjectFile { private: + friend class ImportDirectoryEntryRef; const coff_file_header *COFFHeader; const pe32_header *PE32Header; const data_directory *DataDirectory; @@ -209,6 +212,8 @@ private: const coff_symbol *SymbolTable; const char *StringTable; uint32_t StringTableSize; + const import_directory_table_entry *ImportDirectory; + uint32_t NumberOfImportDirectory; error_code getString(uint32_t offset, StringRef &Res) const; @@ -216,6 +221,9 @@ private: const coff_section *toSec(DataRefImpl Sec) const; const coff_relocation *toRel(DataRefImpl Rel) const; + error_code initSymbolTablePtr(); + error_code initImportTablePtr(); + protected: virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const; virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const; @@ -287,6 +295,9 @@ public: virtual unsigned getArch() const; virtual StringRef getLoadName() const; + import_directory_iterator getImportDirectoryBegin() const; + import_directory_iterator getImportDirectoryEnd() const; + error_code getHeader(const coff_file_header *&Res) const; error_code getCOFFHeader(const coff_file_header *&Res) const; error_code getPE32Header(const pe32_header *&Res) const; @@ -307,12 +318,37 @@ public: error_code getSectionContents(const coff_section *Sec, ArrayRef<uint8_t> &Res) const; + error_code getRvaPtr(uint32_t Rva, uintptr_t &Res) const; + error_code getHintName(uint32_t Rva, uint16_t &Hint, StringRef &Name) const; + static inline bool classof(const Binary *v) { return v->isCOFF(); } }; -} -} +// The iterator for the import directory table. +class ImportDirectoryEntryRef { +public: + ImportDirectoryEntryRef() : OwningObject(0) {} + ImportDirectoryEntryRef(DataRefImpl ImportDirectory, + const COFFObjectFile *Owner) + : ImportDirectoryPimpl(ImportDirectory), OwningObject(Owner) {} + + bool operator==(const ImportDirectoryEntryRef &Other) const; + error_code getNext(ImportDirectoryEntryRef &Result) const; + error_code getName(StringRef &Result) const; + + error_code + getImportTableEntry(const import_directory_table_entry *&Result) const; + + error_code + getImportLookupEntry(const COFF::ImportLookupTableEntry32 *&Result) const; + +private: + DataRefImpl ImportDirectoryPimpl; + const COFFObjectFile *OwningObject; +}; +} // end namespace object +} // end namespace llvm #endif diff --git a/lib/Object/COFFObjectFile.cpp b/lib/Object/COFFObjectFile.cpp index f3f2532..1429241 100644 --- a/lib/Object/COFFObjectFile.cpp +++ b/lib/Object/COFFObjectFile.cpp @@ -16,6 +16,8 @@ #include "llvm/ADT/SmallString.h" #include "llvm/ADT/StringSwitch.h" #include "llvm/ADT/Triple.h" +#include "llvm/Support/Debug.h" +#include "llvm/Support/raw_ostream.h" using namespace llvm; using namespace object; @@ -429,6 +431,94 @@ relocation_iterator COFFObjectFile::getSectionRelEnd(DataRefImpl Sec) const { return relocation_iterator(RelocationRef(ret, this)); } +// Initialize the pointer to the symbol table. +error_code COFFObjectFile::initSymbolTablePtr() { + if (error_code ec = getObject( + SymbolTable, Data, base() + COFFHeader->PointerToSymbolTable, + COFFHeader->NumberOfSymbols * sizeof(coff_symbol))) + return ec; + + // Find string table. The first four byte of the string table contains the + // total size of the string table, including the size field itself. If the + // string table is empty, the value of the first four byte would be 4. + const uint8_t *StringTableAddr = + base() + COFFHeader->PointerToSymbolTable + + COFFHeader->NumberOfSymbols * sizeof(coff_symbol); + const ulittle32_t *StringTableSizePtr; + if (error_code ec = getObject(StringTableSizePtr, Data, StringTableAddr)) + return ec; + StringTableSize = *StringTableSizePtr; + if (error_code ec = + getObject(StringTable, Data, StringTableAddr, StringTableSize)) + return ec; + + // Check that the string table is null terminated if has any in it. + if (StringTableSize < 4 || + (StringTableSize > 4 && StringTable[StringTableSize - 1] != 0)) + return object_error::parse_failed; + return object_error::success; +} + +// Returns the file offset for the given RVA. +error_code COFFObjectFile::getRvaPtr(uint32_t Rva, uintptr_t &Res) const { + error_code ec; + for (section_iterator i = begin_sections(), e = end_sections(); i != e; + i.increment(ec)) { + if (ec) + return ec; + const coff_section *Section = getCOFFSection(i); + uint32_t SectionStart = Section->VirtualAddress; + uint32_t SectionEnd = Section->VirtualAddress + Section->VirtualSize; + if (SectionStart <= Rva && Rva < SectionEnd) { + uint32_t Offset = Rva - SectionStart; + Res = uintptr_t(base()) + Section->PointerToRawData + Offset; + return object_error::success; + } + } + return object_error::parse_failed; +} + +// Returns hint and name fields, assuming \p Rva is pointing to a Hint/Name +// table entry. +error_code COFFObjectFile:: +getHintName(uint32_t Rva, uint16_t &Hint, StringRef &Name) const { + uintptr_t IntPtr = 0; + if (error_code ec = getRvaPtr(Rva, IntPtr)) + return ec; + const uint8_t *Ptr = reinterpret_cast<const uint8_t *>(IntPtr); + Hint = *reinterpret_cast<const ulittle16_t *>(Ptr); + Name = StringRef(reinterpret_cast<const char *>(Ptr + 2)); + return object_error::success; +} + +// Find the import table. +error_code COFFObjectFile::initImportTablePtr() { + // First, we get the RVA of the import table. If the file lacks a pointer to + // the import table, do nothing. + const data_directory *DataEntry; + if (getDataDirectory(COFF::IMPORT_TABLE, DataEntry)) + return object_error::success; + + // Do nothing if the pointer to import table is NULL. + if (DataEntry->RelativeVirtualAddress == 0) + return object_error::success; + + uint32_t ImportTableRva = DataEntry->RelativeVirtualAddress; + NumberOfImportDirectory = DataEntry->Size / + sizeof(import_directory_table_entry); + + // Find the section that contains the RVA. This is needed because the RVA is + // the import table's memory address which is different from its file offset. + uintptr_t IntPtr = 0; + if (error_code ec = getRvaPtr(ImportTableRva, IntPtr)) + return ec; + ImportDirectory = reinterpret_cast< + const import_directory_table_entry *>(IntPtr); + + // It's an error if there's no section containing the Import Table RVA. + return object_error::parse_failed; +} + COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec) : ObjectFile(Binary::ID_COFF, Object) , COFFHeader(0) @@ -437,7 +527,9 @@ COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec) , SectionTable(0) , SymbolTable(0) , StringTable(0) - , StringTableSize(0) { + , StringTableSize(0) + , ImportDirectory(0) + , NumberOfImportDirectory(0) { // Check that we at least have enough room for a header. if (!checkSize(Data, ec, sizeof(coff_file_header))) return; @@ -488,45 +580,28 @@ COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec) COFFHeader->NumberOfSections * sizeof(coff_section)))) return; - if (COFFHeader->PointerToSymbolTable != 0) { - if ((ec = getObject(SymbolTable, Data, - base() + COFFHeader->PointerToSymbolTable, - COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))) + // Initialize the pointer to the symbol table. + if (COFFHeader->PointerToSymbolTable != 0) + if ((ec = initSymbolTablePtr())) return; - // Find string table. The first four byte of the string table contains the - // total size of the string table, including the size field itself. If the - // string table is empty, the value of the first four byte would be 4. - const uint8_t *StringTableAddr = base() + COFFHeader->PointerToSymbolTable - + COFFHeader->NumberOfSymbols * sizeof(coff_symbol); - const ulittle32_t *StringTableSizePtr; - if ((ec = getObject(StringTableSizePtr, Data, StringTableAddr))) - return; - StringTableSize = *StringTableSizePtr; - if ((ec = getObject(StringTable, Data, StringTableAddr, StringTableSize))) - return; - - // Check that the string table is null terminated if has any in it. - if (StringTableSize < 4 - || (StringTableSize > 4 && StringTable[StringTableSize - 1] != 0)) { - ec = object_error::parse_failed; - return; - } - } + // Initialize the pointer to the beginning of the import table. + if ((ec = initImportTablePtr())) + return; ec = object_error::success; } symbol_iterator COFFObjectFile::begin_symbols() const { DataRefImpl ret; - ret.p = reinterpret_cast<intptr_t>(SymbolTable); + ret.p = reinterpret_cast<uintptr_t>(SymbolTable); return symbol_iterator(SymbolRef(ret, this)); } symbol_iterator COFFObjectFile::end_symbols() const { // The symbol table ends where the string table begins. DataRefImpl ret; - ret.p = reinterpret_cast<intptr_t>(StringTable); + ret.p = reinterpret_cast<uintptr_t>(StringTable); return symbol_iterator(SymbolRef(ret, this)); } @@ -555,16 +630,32 @@ StringRef COFFObjectFile::getLoadName() const { return ""; } +import_directory_iterator COFFObjectFile::getImportDirectoryBegin() const { + DataRefImpl Imp; + Imp.p = reinterpret_cast<uintptr_t>(ImportDirectory); + return import_directory_iterator(ImportDirectoryEntryRef(Imp, this)); +} + +import_directory_iterator COFFObjectFile::getImportDirectoryEnd() const { + DataRefImpl Imp; + if (ImportDirectory) { + Imp.p = reinterpret_cast<uintptr_t>( + ImportDirectory + (NumberOfImportDirectory - 1)); + } else { + Imp.p = 0; + } + return import_directory_iterator(ImportDirectoryEntryRef(Imp, this)); +} section_iterator COFFObjectFile::begin_sections() const { DataRefImpl ret; - ret.p = reinterpret_cast<intptr_t>(SectionTable); + ret.p = reinterpret_cast<uintptr_t>(SectionTable); return section_iterator(SectionRef(ret, this)); } section_iterator COFFObjectFile::end_sections() const { DataRefImpl ret; - ret.p = reinterpret_cast<intptr_t>(SectionTable + COFFHeader->NumberOfSections); + ret.p = reinterpret_cast<uintptr_t>(SectionTable + COFFHeader->NumberOfSections); return section_iterator(SectionRef(ret, this)); } @@ -676,7 +767,7 @@ error_code COFFObjectFile::getSymbolName(const coff_symbol *symbol, ArrayRef<uint8_t> COFFObjectFile::getSymbolAuxData( const coff_symbol *symbol) const { const uint8_t *aux = NULL; - + if ( symbol->NumberOfAuxSymbols > 0 ) { // AUX data comes immediately after the symbol in COFF aux = reinterpret_cast<const uint8_t *>(symbol + 1); @@ -777,7 +868,6 @@ const coff_relocation *COFFObjectFile::getCOFFRelocation( return toRel(It->getRawDataRefImpl()); } - #define LLVM_COFF_SWITCH_RELOC_TYPE_NAME(enum) \ case COFF::enum: res = #enum; break; @@ -858,6 +948,52 @@ error_code COFFObjectFile::getLibraryPath(DataRefImpl LibData, report_fatal_error("getLibraryPath not implemented in COFFObjectFile"); } +bool ImportDirectoryEntryRef:: +operator==(const ImportDirectoryEntryRef &Other) const { + return ImportDirectoryPimpl == Other.ImportDirectoryPimpl; +} + +static const import_directory_table_entry *toImportEntry(DataRefImpl Imp) { + return reinterpret_cast<const import_directory_table_entry *>(Imp.p); +} + +error_code +ImportDirectoryEntryRef::getNext(ImportDirectoryEntryRef &Result) const { + const import_directory_table_entry *Dir = toImportEntry(ImportDirectoryPimpl); + Dir += 1; + DataRefImpl Next; + Next.p = reinterpret_cast<uintptr_t>(Dir); + Result = ImportDirectoryEntryRef(Next, OwningObject); + return object_error::success; +} + +error_code ImportDirectoryEntryRef:: +getImportTableEntry(const import_directory_table_entry *&Result) const { + Result = toImportEntry(ImportDirectoryPimpl); + return object_error::success; +} + +error_code ImportDirectoryEntryRef::getName(StringRef &Result) const { + const import_directory_table_entry *Dir = toImportEntry(ImportDirectoryPimpl); + uintptr_t IntPtr = 0; + if (error_code ec = OwningObject->getRvaPtr(Dir->NameRVA, IntPtr)) + return ec; + const char *Ptr = reinterpret_cast<const char *>(IntPtr); + Result = StringRef(Ptr); + return object_error::success; +} + +error_code ImportDirectoryEntryRef::getImportLookupEntry( + const COFF::ImportLookupTableEntry32 *&Result) const { + const import_directory_table_entry *Dir = toImportEntry(ImportDirectoryPimpl); + uintptr_t IntPtr = 0; + if (error_code ec = OwningObject->getRvaPtr( + Dir->ImportLookupTableRVA, IntPtr)) + return ec; + Result = reinterpret_cast<const COFF::ImportLookupTableEntry32 *>(IntPtr); + return object_error::success; +} + namespace llvm { ObjectFile *ObjectFile::createCOFFObjectFile(MemoryBuffer *Object) { diff --git a/test/tools/llvm-objdump/Inputs/nop.exe.coff-i386 b/test/tools/llvm-objdump/Inputs/nop.exe.coff-i386 Binary files differnew file mode 100644 index 0000000..68c9d3d --- /dev/null +++ b/test/tools/llvm-objdump/Inputs/nop.exe.coff-i386 diff --git a/test/tools/llvm-objdump/Inputs/trivial.obj.elf-i386 b/test/tools/llvm-objdump/Inputs/trivial.obj.elf-i386 Binary files differnew file mode 100644 index 0000000..fdc4874 --- /dev/null +++ b/test/tools/llvm-objdump/Inputs/trivial.obj.elf-i386 diff --git a/test/tools/llvm-objdump/Inputs/win64-unwind.exe.coff-x86_64 b/test/tools/llvm-objdump/Inputs/win64-unwind.exe.coff-x86_64 Binary files differnew file mode 100644 index 0000000..63460e7 --- /dev/null +++ b/test/tools/llvm-objdump/Inputs/win64-unwind.exe.coff-x86_64 diff --git a/test/tools/llvm-objdump/Inputs/win64-unwind.exe.coff-x86_64.asm b/test/tools/llvm-objdump/Inputs/win64-unwind.exe.coff-x86_64.asm new file mode 100644 index 0000000..4d47fa4 --- /dev/null +++ b/test/tools/llvm-objdump/Inputs/win64-unwind.exe.coff-x86_64.asm @@ -0,0 +1,53 @@ + .text + .globl func + .def func; .scl 2; .type 32; .endef + .seh_proc func +func: + .seh_pushframe @code + subq $24, %rsp + .seh_stackalloc 24 + movq %rsi, 16(%rsp) + .seh_savereg %rsi, 16 + movups %xmm8, (%rsp) + .seh_savexmm %xmm8, 0 + pushq %rbx + .seh_pushreg 3 + mov %rsp, %rbx + .seh_setframe 3, 0 + .seh_endprologue + .seh_handler __C_specific_handler, @except + .seh_handlerdata + .long 0 + .text + .seh_startchained + .seh_endprologue + .seh_endchained + lea (%rbx), %rsp + pop %rbx + addq $24, %rsp + ret + .seh_endproc + +// Test emission of small functions. + .globl smallFunc + .def smallFunc; .scl 2; .type 32; .endef + .seh_proc smallFunc +smallFunc: + ret + .seh_endproc + +// Function with big stack allocation. + .globl allocFunc + .def allocFunc; .scl 2; .type 32; .endef + .seh_proc allocFunc +allocFunc: + .seh_pushframe @code + subq $65520, %rsp + .seh_stackalloc 65520 + sub $8454128, %rsp + .seh_stackalloc 8454128 + .seh_endprologue + add $8454128, %rsp + addq $65520, %rsp + ret + .seh_endproc diff --git a/test/tools/llvm-objdump/coff-private-headers.test b/test/tools/llvm-objdump/coff-private-headers.test new file mode 100644 index 0000000..d36c148 --- /dev/null +++ b/test/tools/llvm-objdump/coff-private-headers.test @@ -0,0 +1,9 @@ +// RUN: llvm-objdump -p %p/Inputs/nop.exe.coff-i386 | FileCheck %s + +CHECK: The Import Tables: +CHECK-NEXT: lookup 00005028 time 00000000 fwd 00000000 name 00005096 addr 00005058 +CHECK: DLL Name: KERNEL32.dll +CHECK-NEXT: Hint/Ord Name +CHECK-NEXT: 365 ExitProcess + + diff --git a/test/tools/llvm-objdump/disassembly-show-raw.s b/test/tools/llvm-objdump/disassembly-show-raw.s deleted file mode 100644 index 32fcad4..0000000 --- a/test/tools/llvm-objdump/disassembly-show-raw.s +++ /dev/null @@ -1,15 +0,0 @@ -// RUN: llvm-mc -filetype=obj -arch=x86 %s | llvm-objdump -d - \ -// RUN: | FileCheck %s -check-prefix=WITHRAW -// RUN: llvm-mc -filetype=obj -arch=x86 %s | llvm-objdump -d -no-show-raw-insn - \ -// RUN: | FileCheck %s -check-prefix=NORAW - -// Expect to find the raw incoding when run with raw output (default), but not -// when run explicitly with -no-show-raw-insn - -movl 0, %eax -// WITHRAW: a1 00 00 00 00 movl - -// NORAW: movl -// NORAW-NOT: a1 00 - - diff --git a/test/tools/llvm-objdump/disassembly-show-raw.test b/test/tools/llvm-objdump/disassembly-show-raw.test new file mode 100644 index 0000000..e9956a5 --- /dev/null +++ b/test/tools/llvm-objdump/disassembly-show-raw.test @@ -0,0 +1,14 @@ +// RUN: llvm-objdump -d %p/Inputs/trivial.obj.elf-i386 \ +// RUN: | FileCheck %s -check-prefix=WITHRAW +// RUN: llvm-objdump -d -no-show-raw-insn %p/Inputs/trivial.obj.elf-i386 \ +// RUN: | FileCheck %s -check-prefix=NORAW + +// Expect to find the raw incoding when run with raw output (default), but not +// when run explicitly with -no-show-raw-insn + +WITHRAW: a1 00 00 00 00 movl + +NORAW: movl +NORAW-NOT: a1 00 + + diff --git a/test/tools/llvm-objdump/lit.local.cfg b/test/tools/llvm-objdump/lit.local.cfg deleted file mode 100644 index ba763cf..0000000 --- a/test/tools/llvm-objdump/lit.local.cfg +++ /dev/null @@ -1,4 +0,0 @@ -targets = set(config.root.targets_to_build.split()) -if not 'X86' in targets: - config.unsupported = True - diff --git a/test/tools/llvm-objdump/win64-unwind-data.s b/test/tools/llvm-objdump/win64-unwind-data.s deleted file mode 100644 index f8463fb..0000000 --- a/test/tools/llvm-objdump/win64-unwind-data.s +++ /dev/null @@ -1,106 +0,0 @@ -// This test checks that the unwind data is dumped by llvm-objdump. -// RUN: llvm-mc -triple x86_64-pc-win32 -filetype=obj %s | llvm-objdump -u - | FileCheck %s - -// CHECK: Unwind info: -// CHECK: Function Table: -// CHECK-NEXT: Start Address: func -// CHECK-NEXT: End Address: func + 0x001b -// CHECK-NEXT: Unwind Info Address: .xdata -// CHECK-NEXT: Version: 1 -// CHECK-NEXT: Flags: 1 UNW_ExceptionHandler -// CHECK-NEXT: Size of prolog: 18 -// CHECK-NEXT: Number of Codes: 8 -// CHECK-NEXT: Frame register: RBX -// CHECK-NEXT: Frame offset: 0 -// CHECK-NEXT: Unwind Codes: -// CHECK-NEXT: 0x12: UOP_SetFPReg -// CHECK-NEXT: 0x0f: UOP_PushNonVol RBX -// CHECK-NEXT: 0x0e: UOP_SaveXMM128 XMM8 [0x0000] -// CHECK-NEXT: 0x09: UOP_SaveNonVol RSI [0x0010] -// CHECK-NEXT: 0x04: UOP_AllocSmall 24 -// CHECK-NEXT: 0x00: UOP_PushMachFrame w/o error code -// CHECK: Function Table: -// CHECK-NEXT: Start Address: func + 0x0012 -// CHECK-NEXT: End Address: func + 0x0012 -// CHECK-NEXT: Unwind Info Address: .xdata + 0x001c -// CHECK-NEXT: Version: 1 -// CHECK-NEXT: Flags: 4 UNW_ChainInfo -// CHECK-NEXT: Size of prolog: 0 -// CHECK-NEXT: Number of Codes: 0 -// CHECK-NEXT: No frame pointer used -// CHECK: Function Table: -// CHECK-NEXT: Start Address: smallFunc -// CHECK-NEXT: End Address: smallFunc + 0x0001 -// CHECK-NEXT: Unwind Info Address: .xdata + 0x002c -// CHECK-NEXT: Version: 1 -// CHECK-NEXT: Flags: 0 -// CHECK-NEXT: Size of prolog: 0 -// CHECK-NEXT: Number of Codes: 0 -// CHECK-NEXT: No frame pointer used -// CHECK: Function Table: -// CHECK-NEXT: Start Address: allocFunc -// CHECK-NEXT: End Address: allocFunc + 0x001d -// CHECK-NEXT: Unwind Info Address: .xdata + 0x0034 -// CHECK-NEXT: Version: 1 -// CHECK-NEXT: Flags: 0 -// CHECK-NEXT: Size of prolog: 14 -// CHECK-NEXT: Number of Codes: 6 -// CHECK-NEXT: No frame pointer used -// CHECK-NEXT: Unwind Codes: -// CHECK-NEXT: 0x0e: UOP_AllocLarge 8454128 -// CHECK-NEXT: 0x07: UOP_AllocLarge 8190 -// CHECK-NEXT: 0x00: UOP_PushMachFrame w/o error code - - .text - .globl func - .def func; .scl 2; .type 32; .endef - .seh_proc func -func: - .seh_pushframe @code - subq $24, %rsp - .seh_stackalloc 24 - movq %rsi, 16(%rsp) - .seh_savereg %rsi, 16 - movups %xmm8, (%rsp) - .seh_savexmm %xmm8, 0 - pushq %rbx - .seh_pushreg 3 - mov %rsp, %rbx - .seh_setframe 3, 0 - .seh_endprologue - .seh_handler __C_specific_handler, @except - .seh_handlerdata - .long 0 - .text - .seh_startchained - .seh_endprologue - .seh_endchained - lea (%rbx), %rsp - pop %rbx - addq $24, %rsp - ret - .seh_endproc - -// Test emission of small functions. - .globl smallFunc - .def smallFunc; .scl 2; .type 32; .endef - .seh_proc smallFunc -smallFunc: - ret - .seh_endproc - -// Function with big stack allocation. - .globl allocFunc - .def allocFunc; .scl 2; .type 32; .endef - .seh_proc allocFunc -allocFunc: - .seh_pushframe @code - subq $65520, %rsp - .seh_stackalloc 65520 - sub $8454128, %rsp - .seh_stackalloc 8454128 - .seh_endprologue - add $8454128, %rsp - addq $65520, %rsp - ret - .seh_endproc diff --git a/test/tools/llvm-objdump/win64-unwind-data.test b/test/tools/llvm-objdump/win64-unwind-data.test new file mode 100644 index 0000000..a723ffe --- /dev/null +++ b/test/tools/llvm-objdump/win64-unwind-data.test @@ -0,0 +1,52 @@ +// This test checks that the unwind data is dumped by llvm-objdump. +// RUN: llvm-objdump -u %p/Inputs/win64-unwind.exe.coff-x86_64 | FileCheck %s + +CHECK: Unwind info: +CHECK: Function Table: +CHECK-NEXT: Start Address: func +CHECK-NEXT: End Address: func + 0x001b +CHECK-NEXT: Unwind Info Address: .xdata +CHECK-NEXT: Version: 1 +CHECK-NEXT: Flags: 1 UNW_ExceptionHandler +CHECK-NEXT: Size of prolog: 18 +CHECK-NEXT: Number of Codes: 8 +CHECK-NEXT: Frame register: RBX +CHECK-NEXT: Frame offset: 0 +CHECK-NEXT: Unwind Codes: +CHECK-NEXT: 0x12: UOP_SetFPReg +CHECK-NEXT: 0x0f: UOP_PushNonVol RBX +CHECK-NEXT: 0x0e: UOP_SaveXMM128 XMM8 [0x0000] +CHECK-NEXT: 0x09: UOP_SaveNonVol RSI [0x0010] +CHECK-NEXT: 0x04: UOP_AllocSmall 24 +CHECK-NEXT: 0x00: UOP_PushMachFrame w/o error code +CHECK: Function Table: +CHECK-NEXT: Start Address: func + 0x0012 +CHECK-NEXT: End Address: func + 0x0012 +CHECK-NEXT: Unwind Info Address: .xdata + 0x001c +CHECK-NEXT: Version: 1 +CHECK-NEXT: Flags: 4 UNW_ChainInfo +CHECK-NEXT: Size of prolog: 0 +CHECK-NEXT: Number of Codes: 0 +CHECK-NEXT: No frame pointer used +CHECK: Function Table: +CHECK-NEXT: Start Address: smallFunc +CHECK-NEXT: End Address: smallFunc + 0x0001 +CHECK-NEXT: Unwind Info Address: .xdata + 0x002c +CHECK-NEXT: Version: 1 +CHECK-NEXT: Flags: 0 +CHECK-NEXT: Size of prolog: 0 +CHECK-NEXT: Number of Codes: 0 +CHECK-NEXT: No frame pointer used +CHECK: Function Table: +CHECK-NEXT: Start Address: allocFunc +CHECK-NEXT: End Address: allocFunc + 0x001d +CHECK-NEXT: Unwind Info Address: .xdata + 0x0034 +CHECK-NEXT: Version: 1 +CHECK-NEXT: Flags: 0 +CHECK-NEXT: Size of prolog: 14 +CHECK-NEXT: Number of Codes: 6 +CHECK-NEXT: No frame pointer used +CHECK-NEXT: Unwind Codes: +CHECK-NEXT: 0x0e: UOP_AllocLarge 8454128 +CHECK-NEXT: 0x07: UOP_AllocLarge 8190 +CHECK-NEXT: 0x00: UOP_PushMachFrame w/o error code diff --git a/tools/llvm-objdump/COFFDump.cpp b/tools/llvm-objdump/COFFDump.cpp index bca6fc9..968e20c 100644 --- a/tools/llvm-objdump/COFFDump.cpp +++ b/tools/llvm-objdump/COFFDump.cpp @@ -227,6 +227,48 @@ static void printCOFFSymbolAddress(llvm::raw_ostream &Out, Out << format(" + 0x%04x", Disp); } +// Prints import tables. The import table is a table containing the list of +// DLL name and symbol names which will be linked by the loader. +static void printImportTables(const COFFObjectFile *Obj) { + outs() << "The Import Tables:\n"; + error_code ec; + for (import_directory_iterator i = Obj->getImportDirectoryBegin(), + e = Obj->getImportDirectoryEnd(); + i != e; i = i.increment(ec)) { + if (ec) + return; + + const import_directory_table_entry *Dir; + StringRef Name; + if (i->getImportTableEntry(Dir)) return; + if (i->getName(Name)) return; + + outs() << format(" lookup %08x", Dir->ImportLookupTableRVA); + outs() << format(" time %08x", Dir->TimeDateStamp); + outs() << format(" fwd %08x", Dir->ForwarderChain); + outs() << format(" name %08x", Dir->NameRVA); + outs() << format(" addr %08x\n\n", Dir->ImportAddressTableRVA); + + outs() << " DLL Name: " << Name << "\n"; + outs() << " Hint/Ord Name\n"; + const COFF::ImportLookupTableEntry32 *entry; + if (i->getImportLookupEntry(entry)) + return; + for (; entry->data; ++entry) { + if (entry->isOrdinal()) { + outs() << format(" % 6d\n", entry->getOrdinal()); + continue; + } + uint16_t Hint; + StringRef Name; + if (Obj->getHintName(entry->getHintNameRVA(), Hint, Name)) + return; + outs() << format(" % 6d %s\n", Hint, Name); + } + outs() << "\n"; + } +} + void llvm::printCOFFUnwindInfo(const COFFObjectFile *Obj) { const coff_file_header *Header; if (error(Obj->getCOFFHeader(Header))) return; @@ -353,3 +395,7 @@ void llvm::printCOFFUnwindInfo(const COFFObjectFile *Obj) { } } } + +void llvm::printCOFFFileHeader(const object::ObjectFile *Obj) { + printImportTables(dyn_cast<const COFFObjectFile>(Obj)); +} diff --git a/tools/llvm-objdump/llvm-objdump.cpp b/tools/llvm-objdump/llvm-objdump.cpp index 8065787..9bc092e 100644 --- a/tools/llvm-objdump/llvm-objdump.cpp +++ b/tools/llvm-objdump/llvm-objdump.cpp @@ -770,6 +770,14 @@ static void PrintUnwindInfo(const ObjectFile *o) { } } +static void printPrivateFileHeader(const ObjectFile *o) { + if (o->isELF()) { + printELFFileHeader(o); + } else if (o->isCOFF()) { + printCOFFFileHeader(o); + } +} + static void DumpObject(const ObjectFile *o) { outs() << '\n'; outs() << o->getFileName() @@ -787,8 +795,8 @@ static void DumpObject(const ObjectFile *o) { PrintSymbolTable(o); if (UnwindInfo) PrintUnwindInfo(o); - if (PrivateHeaders && o->isELF()) - printELFFileHeader(o); + if (PrivateHeaders) + printPrivateFileHeader(o); } /// @brief Dump each object file in \a a; diff --git a/tools/llvm-objdump/llvm-objdump.h b/tools/llvm-objdump/llvm-objdump.h index 87f19ba..b716a26 100644 --- a/tools/llvm-objdump/llvm-objdump.h +++ b/tools/llvm-objdump/llvm-objdump.h @@ -34,7 +34,8 @@ void DumpBytes(StringRef bytes); void DisassembleInputMachO(StringRef Filename); void printCOFFUnwindInfo(const object::COFFObjectFile* o); void printELFFileHeader(const object::ObjectFile *o); +void printCOFFFileHeader(const object::ObjectFile *o); -} +} // end namespace llvm #endif |