[XCOFF] llvm-readobj support display symbol table of loader section of xcoff object file.
Reviewers: James Henderson, Esme Yi Differential Revision: https://reviews.llvm.org/D135887
This commit is contained in:
zhijian
parent
c7a53421cd
commit
a56d0e84da
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@ -338,6 +338,10 @@ The following options are implemented only for the XCOFF file format.
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Display XCOFF loader section header.
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.. option:: --loader-section-symbols
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Display symbol table of loader section.
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EXIT STATUS
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-----------
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@ -204,6 +204,10 @@ struct LoaderSectionHeader32 {
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support::big32_t OffsetToImpid;
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support::ubig32_t LengthOfStrTbl;
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support::big32_t OffsetToStrTbl;
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uint64_t getOffsetToSymTbl() const {
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return NumberOfSymTabEnt == 0 ? 0 : sizeof(LoaderSectionHeader32);
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}
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};
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struct LoaderSectionHeader64 {
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@ -217,6 +221,39 @@ struct LoaderSectionHeader64 {
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support::big64_t OffsetToStrTbl;
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support::big64_t OffsetToSymTbl;
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support::big64_t OffsetToRelEnt;
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uint64_t getOffsetToSymTbl() const { return OffsetToSymTbl; }
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};
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struct LoaderSectionSymbolEntry32 {
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struct NameOffsetInStrTbl {
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support::big32_t IsNameInStrTbl; // Zero indicates name in string table.
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support::ubig32_t Offset;
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};
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char SymbolName[XCOFF::NameSize];
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support::ubig32_t Value; // The virtual address of the symbol.
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support::big16_t SectionNumber;
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uint8_t SymbolType;
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XCOFF::StorageClass StorageClass;
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support::ubig32_t ImportFileID;
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support::ubig32_t ParameterTypeCheck;
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Expected<StringRef>
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getSymbolName(const LoaderSectionHeader32 *LoaderSecHeader) const;
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};
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struct LoaderSectionSymbolEntry64 {
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support::ubig64_t Value; // The virtual address of the symbol.
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support::ubig32_t Offset;
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support::big16_t SectionNumber;
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uint8_t SymbolType;
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XCOFF::StorageClass StorageClass;
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support::ubig32_t ImportFileID;
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support::ubig32_t ParameterTypeCheck;
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Expected<StringRef>
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getSymbolName(const LoaderSectionHeader64 *LoaderSecHeader) const;
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};
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template <typename AddressType> struct ExceptionSectionEntry {
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@ -89,6 +89,34 @@ uint8_t XCOFFRelocation<AddressType>::getRelocatedLength() const {
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template struct ExceptionSectionEntry<support::ubig32_t>;
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template struct ExceptionSectionEntry<support::ubig64_t>;
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template <typename T>
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Expected<StringRef> getLoaderSecSymNameInStrTbl(const T *LoaderSecHeader,
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uint64_t Offset) {
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if (LoaderSecHeader->LengthOfStrTbl > Offset)
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return (reinterpret_cast<const char *>(LoaderSecHeader) +
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LoaderSecHeader->OffsetToStrTbl + Offset);
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return createError("entry with offset 0x" + Twine::utohexstr(Offset) +
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" in the loader section's string table with size 0x" +
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Twine::utohexstr(LoaderSecHeader->LengthOfStrTbl) +
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" is invalid");
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}
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Expected<StringRef> LoaderSectionSymbolEntry32::getSymbolName(
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const LoaderSectionHeader32 *LoaderSecHeader32) const {
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const NameOffsetInStrTbl *NameInStrTbl =
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reinterpret_cast<const NameOffsetInStrTbl *>(SymbolName);
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if (NameInStrTbl->IsNameInStrTbl != XCOFFSymbolRef::NAME_IN_STR_TBL_MAGIC)
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return generateXCOFFFixedNameStringRef(SymbolName);
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return getLoaderSecSymNameInStrTbl(LoaderSecHeader32, NameInStrTbl->Offset);
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}
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Expected<StringRef> LoaderSectionSymbolEntry64::getSymbolName(
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const LoaderSectionHeader64 *LoaderSecHeader64) const {
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return getLoaderSecSymNameInStrTbl(LoaderSecHeader64, Offset);
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}
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uintptr_t
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XCOFFObjectFile::getAdvancedSymbolEntryAddress(uintptr_t CurrentAddress,
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uint32_t Distance) {
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@ -0,0 +1,38 @@
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## Test invalid offset to symbol string table of loader section for --loader-section-symbols option.
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# RUN: yaml2obj %s -o %t_xcoff.o
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# RUN: llvm-readobj --loader-section-symbols %t_xcoff.o 2>&1 | FileCheck -DFILE=%t_xcoff.o %s
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--- !XCOFF
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FileHeader:
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MagicNumber: 0x1DF
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Sections:
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- Name: .loader
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Flags: [ STYP_LOADER ]
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SectionData: "0000000100000002000000050000016D00000001000000A40000000c000000506d79696e747661722000028000021105000000000000000000000000000000A2200002840002110a0000000000000000000a66756e63305f5f467600"
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## ^------- -Version=1
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## ^------- -NumberOfSymbolEntries=2
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## ^------- -NumberOfRelocationEntries=5
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## ^------- -LengthOfImportFileIDStringTable=365
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## ^------- -NumberOfImportFileIDs=1
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## ^------- -OffsetToImportFileIDs=0xA4
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## ^------- -LengthOfStringTable=12
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## ^------- -OffsetToStringTable=0x050
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## ^--------------- SymbolName=myintvar
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## ^------- Value=0x20000280
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## ^--- sectionNumber = 2
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## ^- SymbolType=0x11
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## ^- StorageClass=0x0a
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## ^------- ImportFileID=0
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## ^-------ParameterCheckType=0
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## ^-------SymbolZero=0
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## ^-------OffsetToStringTbl=0xA2 (Invalid)
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## ^------- Value=20000284
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## ^--- sectionNumber = 2
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## ^- SymbolType=0x11
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## ^- StorageClass=0x0a
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## ^------- ImportFileID=0
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## ^-------ParameterCheckType=0
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## ^StringTable
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# CHECK: warning: '[[FILE]]': entry with offset 0xa2 in the loader section's string table with size 0xc is invalid
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@ -0,0 +1,124 @@
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## Test the --loader-section-symbols option.
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# RUN: yaml2obj --docnum=1 -DSYMNUM=2 %s -o %t_xcoff32.o
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# RUN: yaml2obj --docnum=1 -DSYMNUM=4 %s -o %t_xcoff32_invalid.o
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# RUN: yaml2obj --docnum=2 %s -o %t_xcoff64.o
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# RUN: llvm-readobj --loader-section-symbols %t_xcoff32.o |\
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# RUN: FileCheck %s --check-prefixes=CHECK32
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# RUN: llvm-readobj --loader-section-symbols %t_xcoff32_invalid.o 2>&1 |\
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# RUN: FileCheck -DFILE=%t_xcoff32_invalid.o %s --check-prefixes=CHECK32,WARN
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# RUN: llvm-readobj --loader-section-symbols %t_xcoff64.o |\
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# RUN: FileCheck %s --check-prefixes=CHECK64
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--- !XCOFF
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FileHeader:
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MagicNumber: 0x1DF
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Sections:
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- Name: .loader
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Flags: [ STYP_LOADER ]
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SectionData: "000000010000000[[SYMNUM]]000000050000016D00000001000000A40000000c000000506d79696e74766172200002800002110500000000000000000000000000000002200002840002110a0000000000000000000a66756e63305f5f467600"
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## ^------- -Version=1
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## ^---------------- -NumberOfSymbolEntries=SYMNUM
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## ^------- -NumberOfRelocationEntries=5
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## ^------- -LengthOfImportFileIDStringTable=365
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## ^------- -NumberOfImportFileIDs=1
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## ^------- -OffsetToImportFileIDs=0xA4
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## ^------- -LengthOfStringTable=12
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## ^------- -OffsetToStringTable=0x050
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## ^--------------- SymbolName=myintvar
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## ^------- Value=0x20000280
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## ^--- sectionNumber = 2
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## ^- SymbolType=0x11
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## ^- StorageClass=0x05
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## ^------- ImportFileID=0
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## ^-------ParameterCheckType=0
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## ^-------SymbolZero=0
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## ^-------OffsetToSymTbl=2
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## ^------- Value=20000284
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## ^--- sectionNumber = 2
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## ^- SymbolType=0x11
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## ^- StorageClass=0x0a
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## ^------- ImportFileID=0
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## ^-------ParameterCheckType=0
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## ^StringTable
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--- !XCOFF
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FileHeader:
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MagicNumber: 0x1F7
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Sections:
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- Name: .loader
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Flags: [ STYP_LOADER ]
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SectionData: "0000000200000002000000050000016D000000010000001200000000000000D000000000000000680000000000000038000000000000008000000001100003000000000200021105000000000000000000000001100003080000000d0002110a000000000000000000096d79696e7476617200000a5f5a3566756e6330760000"
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## ^------- -Version=2
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## ^------- -NumberOfSymbolEntries=2
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## ^------- -NumberOfRelocationEntries=5
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## ^------- -LengthOfImportFileIDStringTable=365
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## ^------- -NumberOfImportFileIDs=1
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## ^------- --LengthOfStringTable=0x12
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## ^--------------- -OffsetToImportFileIDs=0xD0
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## ^--------------- -OffsetToStringTable=0x68
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## ^--------------- -OffsetToSymbolTable=0x38
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## ^--------------- -OffsetToRelocationEntries=0x80
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## ^--------------- Value=0x0000000110000300
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## ^------- OffsetToStringTbl=2
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## ^--- sectionNumber = 2
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## ^- SymbolType=0x11
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## ^- StorageClass=0x05
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## ^------- ImportFileID=0
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## ^-------ParameterCheckType=0
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## ^--------------- Value=0x0000000110000308
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## ^------- OffsetToStringTbl= 0x0d
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## ^--- sectionNumber = 2
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## ^- SymbolType=0x11
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## ^- StorageClass=0x0a
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## ^------- ImportFileID=0
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## ^-------ParameterCheckType=0
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## ^StringTable
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# CHECK32: Loader Section {
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# CHECK32-NEXT: Loader Section Symbols {
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# CHECK32-NEXT: Symbol {
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# CHECK32-NEXT: Name: myintvar
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# CHECK32-NEXT: Virtual Address: 0x20000280
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# CHECK32-NEXT: SectionNum: 2
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# CHECK32-NEXT: SymbolType: 0x11
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# CHECK32-NEXT: StorageClass: C_EXTDEF (0x5)
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# CHECK32-NEXT: ImportFileID: 0x0
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# CHECK32-NEXT: ParameterTypeCheck: 0
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# CHECK32-NEXT: }
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# CHECK32-NEXT: Symbol {
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# CHECK32-NEXT: Name: func0__Fv
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# CHECK32-NEXT: Virtual Address: 0x20000284
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# CHECK32-NEXT: SectionNum: 2
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# CHECK32-NEXT: SymbolType: 0x11
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# CHECK32-NEXT: StorageClass: C_STRTAG (0xA)
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# CHECK32-NEXT: ImportFileID: 0x0
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# CHECK32-NEXT: ParameterTypeCheck: 0
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# CHECK32-NEXT: }
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# WARN: warning: '[[FILE]]': The end of the file was unexpectedly encountered
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# CHECK32-NEXT: }
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# CHECK32-NEXT: }
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# CHECK64: Loader Section {
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# CHECK64-NEXT: Loader Section Symbols {
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# CHECK64-NEXT: Symbol {
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# CHECK64-NEXT: Name: myintvar
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# CHECK64-NEXT: Virtual Address: 0x110000300
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# CHECK64-NEXT: SectionNum: 2
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# CHECK64-NEXT: SymbolType: 0x11
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# CHECK64-NEXT: StorageClass: C_EXTDEF (0x5)
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# CHECK64-NEXT: ImportFileID: 0x0
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# CHECK64-NEXT: ParameterTypeCheck: 0
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# CHECK64-NEXT: }
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# CHECK64-NEXT: Symbol {
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# CHECK64-NEXT: Name: _Z5func0v
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# CHECK64-NEXT: Virtual Address: 0x110000308
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# CHECK64-NEXT: SectionNum: 2
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# CHECK64-NEXT: SymbolType: 0x11
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# CHECK64-NEXT: StorageClass: C_STRTAG (0xA)
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# CHECK64-NEXT: ImportFileID: 0x0
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# CHECK64-NEXT: ParameterTypeCheck: 0
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# CHECK64-NEXT: }
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# CHECK64-NEXT: }
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# CHECK64-NEXT: }
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@ -158,7 +158,7 @@ public:
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// Only implement for XCOFF
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virtual void printAuxiliaryHeader() {}
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virtual void printExceptionSection() {}
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virtual void printLoaderSection(bool PrintHeader) {}
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virtual void printLoaderSection(bool PrintHeader, bool PrintSymbolTable) {}
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// Only implemented for MachO.
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virtual void printMachODataInCode() { }
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@ -90,6 +90,7 @@ def grp_xcoff : OptionGroup<"kind">, HelpText<"OPTIONS (XCOFF specific)">;
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def auxiliary_header : FF<"auxiliary-header" , "Display the auxiliary header">, Group<grp_xcoff>;
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def exception_section : FF<"exception-section" , "Display the exception section entries">, Group<grp_xcoff>;
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def loader_section_header : FF<"loader-section-header" , "Display the loader section header">, Group<grp_xcoff>;
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def loader_section_symbols : FF<"loader-section-symbols" , "Display the loader section symbol table">, Group<grp_xcoff>;
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def help : FF<"help", "Display this help">;
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def version : FF<"version", "Display the version">;
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@ -40,7 +40,7 @@ public:
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void printNeededLibraries() override;
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void printStringTable() override;
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void printExceptionSection() override;
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void printLoaderSection(bool PrintHeader) override;
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void printLoaderSection(bool PrintHeader, bool PrintSymbolTable) override;
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ScopedPrinter &getScopedPrinter() const { return W; }
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@ -68,6 +68,9 @@ private:
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void printAuxiliaryHeader(const XCOFFAuxiliaryHeader32 *AuxHeader);
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void printAuxiliaryHeader(const XCOFFAuxiliaryHeader64 *AuxHeader);
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void printLoaderSectionHeader(uintptr_t LoaderSectAddr);
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void printLoaderSectionSymbols(uintptr_t LoaderSectAddr);
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template <typename LoaderSectionSymbolEntry, typename LoaderSectionHeader>
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void printLoaderSectionSymbolsHelper(uintptr_t LoaderSectAddr);
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const XCOFFObjectFile &Obj;
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};
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} // anonymous namespace
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@ -135,7 +138,7 @@ void XCOFFDumper::printSectionHeaders() {
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printSectionHeaders(Obj.sections32());
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}
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void XCOFFDumper::printLoaderSection(bool PrintHeader) {
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void XCOFFDumper::printLoaderSection(bool PrintHeader, bool PrintSymbolTable) {
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DictScope DS(W, "Loader Section");
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Expected<uintptr_t> LoaderSectionAddrOrError =
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Obj.getSectionFileOffsetToRawData(XCOFF::STYP_LOADER);
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@ -145,13 +148,18 @@ void XCOFFDumper::printLoaderSection(bool PrintHeader) {
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}
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uintptr_t LoaderSectionAddr = LoaderSectionAddrOrError.get();
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if (LoaderSectionAddr == 0)
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return;
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W.indent();
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if (PrintHeader)
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printLoaderSectionHeader(LoaderSectionAddr);
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// TODO: Need to print symbol table, relocation entry of loader section later.
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if (PrintSymbolTable)
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printLoaderSectionSymbols(LoaderSectionAddr);
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// TODO: Need to add printing of relocation entry of loader section later.
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// For example:
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// if (PrintSymbolTable)
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// printLoaderSectionSymbolTable();
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// if (PrintRelocation)
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// printLoaderSectionRelocationEntry();
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W.unindent();
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@ -185,6 +193,74 @@ void XCOFFDumper::printLoaderSectionHeader(uintptr_t LoaderSectionAddr) {
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}
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}
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const EnumEntry<XCOFF::StorageClass> SymStorageClass[] = {
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#define ECase(X) \
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{ #X, XCOFF::X }
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ECase(C_NULL), ECase(C_AUTO), ECase(C_EXT), ECase(C_STAT),
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ECase(C_REG), ECase(C_EXTDEF), ECase(C_LABEL), ECase(C_ULABEL),
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ECase(C_MOS), ECase(C_ARG), ECase(C_STRTAG), ECase(C_MOU),
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ECase(C_UNTAG), ECase(C_TPDEF), ECase(C_USTATIC), ECase(C_ENTAG),
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ECase(C_MOE), ECase(C_REGPARM), ECase(C_FIELD), ECase(C_BLOCK),
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ECase(C_FCN), ECase(C_EOS), ECase(C_FILE), ECase(C_LINE),
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ECase(C_ALIAS), ECase(C_HIDDEN), ECase(C_HIDEXT), ECase(C_BINCL),
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ECase(C_EINCL), ECase(C_INFO), ECase(C_WEAKEXT), ECase(C_DWARF),
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ECase(C_GSYM), ECase(C_LSYM), ECase(C_PSYM), ECase(C_RSYM),
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ECase(C_RPSYM), ECase(C_STSYM), ECase(C_TCSYM), ECase(C_BCOMM),
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ECase(C_ECOML), ECase(C_ECOMM), ECase(C_DECL), ECase(C_ENTRY),
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ECase(C_FUN), ECase(C_BSTAT), ECase(C_ESTAT), ECase(C_GTLS),
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ECase(C_STTLS), ECase(C_EFCN)
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#undef ECase
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};
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template <typename LoaderSectionSymbolEntry, typename LoaderSectionHeader>
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void XCOFFDumper::printLoaderSectionSymbolsHelper(uintptr_t LoaderSectionAddr) {
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const LoaderSectionHeader *LoadSecHeader =
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reinterpret_cast<const LoaderSectionHeader *>(LoaderSectionAddr);
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const LoaderSectionSymbolEntry *LoadSecSymEntPtr =
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reinterpret_cast<LoaderSectionSymbolEntry *>(
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LoaderSectionAddr + uintptr_t(LoadSecHeader->getOffsetToSymTbl()));
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for (uint32_t i = 0; i < LoadSecHeader->NumberOfSymTabEnt;
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++i, ++LoadSecSymEntPtr) {
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if (Error E = Binary::checkOffset(
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Obj.getMemoryBufferRef(),
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LoaderSectionAddr + uintptr_t(LoadSecHeader->getOffsetToSymTbl()) +
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(i * sizeof(LoaderSectionSymbolEntry)),
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sizeof(LoaderSectionSymbolEntry))) {
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reportUniqueWarning(std::move(E));
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return;
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}
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Expected<StringRef> SymbolNameOrErr =
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LoadSecSymEntPtr->getSymbolName(LoadSecHeader);
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if (!SymbolNameOrErr) {
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reportUniqueWarning(SymbolNameOrErr.takeError());
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return;
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}
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DictScope DS(W, "Symbol");
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W.printString("Name", SymbolNameOrErr.get());
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W.printHex("Virtual Address", LoadSecSymEntPtr->Value);
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W.printNumber("SectionNum", LoadSecSymEntPtr->SectionNumber);
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W.printHex("SymbolType", LoadSecSymEntPtr->SymbolType);
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W.printEnum("StorageClass",
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static_cast<uint8_t>(LoadSecSymEntPtr->StorageClass),
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makeArrayRef(SymStorageClass));
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W.printHex("ImportFileID", LoadSecSymEntPtr->ImportFileID);
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W.printNumber("ParameterTypeCheck", LoadSecSymEntPtr->ParameterTypeCheck);
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}
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}
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void XCOFFDumper::printLoaderSectionSymbols(uintptr_t LoaderSectionAddr) {
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DictScope DS(W, "Loader Section Symbols");
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if (Obj.is64Bit())
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printLoaderSectionSymbolsHelper<LoaderSectionSymbolEntry64,
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LoaderSectionHeader64>(LoaderSectionAddr);
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else
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printLoaderSectionSymbolsHelper<LoaderSectionSymbolEntry32,
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LoaderSectionHeader32>(LoaderSectionAddr);
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}
|
||||
|
||||
template <typename T>
|
||||
void XCOFFDumper::printExceptionSectionEntry(const T &ExceptionSectEnt) const {
|
||||
if (ExceptionSectEnt.getReason())
|
||||
|
|
@ -468,25 +544,6 @@ void XCOFFDumper::printSectAuxEntForDWARF(const T *AuxEntPtr) {
|
|||
makeArrayRef(SymAuxType));
|
||||
}
|
||||
|
||||
const EnumEntry<XCOFF::StorageClass> SymStorageClass[] = {
|
||||
#define ECase(X) \
|
||||
{ #X, XCOFF::X }
|
||||
ECase(C_NULL), ECase(C_AUTO), ECase(C_EXT), ECase(C_STAT),
|
||||
ECase(C_REG), ECase(C_EXTDEF), ECase(C_LABEL), ECase(C_ULABEL),
|
||||
ECase(C_MOS), ECase(C_ARG), ECase(C_STRTAG), ECase(C_MOU),
|
||||
ECase(C_UNTAG), ECase(C_TPDEF), ECase(C_USTATIC), ECase(C_ENTAG),
|
||||
ECase(C_MOE), ECase(C_REGPARM), ECase(C_FIELD), ECase(C_BLOCK),
|
||||
ECase(C_FCN), ECase(C_EOS), ECase(C_FILE), ECase(C_LINE),
|
||||
ECase(C_ALIAS), ECase(C_HIDDEN), ECase(C_HIDEXT), ECase(C_BINCL),
|
||||
ECase(C_EINCL), ECase(C_INFO), ECase(C_WEAKEXT), ECase(C_DWARF),
|
||||
ECase(C_GSYM), ECase(C_LSYM), ECase(C_PSYM), ECase(C_RSYM),
|
||||
ECase(C_RPSYM), ECase(C_STSYM), ECase(C_TCSYM), ECase(C_BCOMM),
|
||||
ECase(C_ECOML), ECase(C_ECOMM), ECase(C_DECL), ECase(C_ENTRY),
|
||||
ECase(C_FUN), ECase(C_BSTAT), ECase(C_ESTAT), ECase(C_GTLS),
|
||||
ECase(C_STTLS), ECase(C_EFCN)
|
||||
#undef ECase
|
||||
};
|
||||
|
||||
static StringRef GetSymbolValueName(XCOFF::StorageClass SC) {
|
||||
switch (SC) {
|
||||
case XCOFF::C_EXT:
|
||||
|
|
|
|||
|
|
@ -163,6 +163,7 @@ static bool COFFTLSDirectory;
|
|||
// XCOFF specific options.
|
||||
static bool XCOFFAuxiliaryHeader;
|
||||
static bool XCOFFLoaderSectionHeader;
|
||||
static bool XCOFFLoaderSectionSymbol;
|
||||
static bool XCOFFExceptionSection;
|
||||
|
||||
OutputStyleTy Output = OutputStyleTy::LLVM;
|
||||
|
|
@ -305,6 +306,7 @@ static void parseOptions(const opt::InputArgList &Args) {
|
|||
// XCOFF specific options.
|
||||
opts::XCOFFAuxiliaryHeader = Args.hasArg(OPT_auxiliary_header);
|
||||
opts::XCOFFLoaderSectionHeader = Args.hasArg(OPT_loader_section_header);
|
||||
opts::XCOFFLoaderSectionSymbol = Args.hasArg(OPT_loader_section_symbols);
|
||||
opts::XCOFFExceptionSection = Args.hasArg(OPT_exception_section);
|
||||
|
||||
opts::InputFilenames = Args.getAllArgValues(OPT_INPUT);
|
||||
|
|
@ -510,8 +512,9 @@ static void dumpObject(ObjectFile &Obj, ScopedPrinter &Writer,
|
|||
}
|
||||
|
||||
if (Obj.isXCOFF()) {
|
||||
if (opts::XCOFFLoaderSectionHeader)
|
||||
Dumper->printLoaderSection(opts::XCOFFLoaderSectionHeader);
|
||||
if (opts::XCOFFLoaderSectionHeader || opts::XCOFFLoaderSectionSymbol)
|
||||
Dumper->printLoaderSection(opts::XCOFFLoaderSectionHeader,
|
||||
opts::XCOFFLoaderSectionSymbol);
|
||||
|
||||
if (opts::XCOFFExceptionSection)
|
||||
Dumper->printExceptionSection();
|
||||
|
|
|
|||
Loading…
Reference in New Issue