forked from OSchip/llvm-project
[llvm-readobj] - Remove unwrapOrError calls from GNUStyle<ELFT>::printRelocations.
This fixes existent FIXMEs: we should not error out when unable to find the number of relocations. Differential revision: https://reviews.llvm.org/D85891
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3f7068ad98
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llvm
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@ -49,7 +49,7 @@ Symbols:
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# RUN: yaml2obj --docnum=1 -DSHOFFSET=0xffffffff %s -o %t1.broken
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# RUN: llvm-readobj --relocations %t1.broken 2>&1 | FileCheck -DFILE=%t1.broken --check-prefix=BROKEN-RELA-LLVM %s
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# RUN: not llvm-readelf --relocations %t1.broken 2>&1 | FileCheck -DFILE=%t1.broken --check-prefix=BROKEN-RELA-GNU %s
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# RUN: llvm-readelf --relocations %t1.broken 2>&1 | FileCheck -DFILE=%t1.broken --check-prefix=BROKEN-RELA-GNU %s
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# BROKEN-RELA-LLVM: Relocations [
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# BROKEN-RELA-LLVM-NEXT: Section (1) .rela.dyn {
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@ -57,8 +57,10 @@ Symbols:
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# BROKEN-RELA-LLVM-NEXT: }
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# BROKEN-RELA-LLVM-NEXT: ]
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## FIXME: GNU still reports an error before trying to dump relocations.
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# BROKEN-RELA-GNU: error: '[[FILE]]': section [index 1] has a sh_offset (0xffffffff) + sh_size (0x3a) that is greater than the file size (0x238)
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# BROKEN-RELA-GNU: warning: '[[FILE]]': unable to get the number of relocations in SHT_ANDROID_RELA section with index 1: section [index 1] has a sh_offset (0xffffffff) + sh_size (0x3a) that is greater than the file size (0x238)
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# BROKEN-RELA-GNU: Relocation section '.rela.dyn' at offset 0xffffffff contains <?> entries:
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# BROKEN-RELA-GNU-NEXT: Offset Info Type Symbol's Value Symbol's Name + Addend
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# BROKEN-RELA-GNU-NEXT: warning: '[[FILE]]': unable to read relocations from SHT_ANDROID_RELA section with index 1: section [index 1] has a sh_offset (0xffffffff) + sh_size (0x3a) that is greater than the file size (0x238)
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## Check we report a warning when the sh_link field of the SHT_ANDROID_RELA section is broken.
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@ -130,7 +132,7 @@ Symbols:
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# RUN: yaml2obj --docnum=2 -DSHOFFSET=0xffffffff %s -o %t2.broken
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# RUN: llvm-readobj --relocations %t2.broken 2>&1 | FileCheck -DFILE=%t2.broken --check-prefix=BROKEN-REL-LLVM %s
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# RUN: not llvm-readelf --relocations %t2.broken 2>&1 | FileCheck -DFILE=%t2.broken --check-prefix=BROKEN-REL-GNU %s
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# RUN: llvm-readelf --relocations %t2.broken 2>&1 | FileCheck -DFILE=%t2.broken --check-prefix=BROKEN-REL-GNU %s
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# BROKEN-REL-LLVM: Relocations [
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# BROKEN-REL-LLVM-NEXT: Section (1) .rel.dyn {
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@ -138,8 +140,10 @@ Symbols:
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# BROKEN-REL-LLVM-NEXT: }
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# BROKEN-REL-LLVM-NEXT: ]
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## FIXME: GNU still reports an error before trying to dump relocations.
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# BROKEN-REL-GNU: error: '[[FILE]]': section [index 1] has a sh_offset (0xffffffff) + sh_size (0x12) that cannot be represented
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# BROKEN-REL-GNU: warning: '[[FILE]]': unable to get the number of relocations in SHT_ANDROID_REL section with index 1: section [index 1] has a sh_offset (0xffffffff) + sh_size (0x12) that cannot be represented
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# BROKEN-REL-GNU: Relocation section '.rel.dyn' at offset 0xffffffff contains <?> entries:
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# BROKEN-REL-GNU-NEXT: Offset Info Type Sym. Value Symbol's Name
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# BROKEN-REL-GNU-NEXT: warning: '[[FILE]]': unable to read relocations from SHT_ANDROID_REL section with index 1: section [index 1] has a sh_offset (0xffffffff) + sh_size (0x12) that cannot be represented
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## Check we report a warning when the sh_link field of the SHT_ANDROID_REL section is broken.
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@ -160,8 +160,8 @@ Sections:
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# RUN: yaml2obj --docnum=2 -DENTSIZE=1 %s -o %t2.broken
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# RUN: llvm-readobj --relocations %t2.broken 2>&1 | \
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# RUN: FileCheck -DFILE=%t2.broken --check-prefix=BROKEN-LLVM %s -DSECNAME=SHT_RELR
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# RUN: not llvm-readelf --relocations %t2.broken 2>&1 | \
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# RUN: FileCheck -DFILE=%t2.broken --check-prefix=BROKEN-GNU %s
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# RUN: llvm-readelf --relocations %t2.broken 2>&1 | \
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# RUN: FileCheck -DFILE=%t2.broken --check-prefix=BROKEN-GNU %s -DSECNAME=SHT_RELR
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# BROKEN-LLVM: Relocations [
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# BROKEN-LLVM-NEXT: Section (1) .relr.dyn {
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@ -169,17 +169,18 @@ Sections:
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# BROKEN-LLVM-NEXT: }
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# BROKEN-LLVM-NEXT: ]
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## FIXME: GNU still reports an error before trying to dump relocations.
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# BROKEN-GNU: error: '[[FILE]]': section [index 1] has an invalid sh_entsize: 1
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# BROKEN-GNU: warning: '[[FILE]]': unable to get the number of relocations in [[SECNAME]] section with index 1: section [index 1] has an invalid sh_entsize: 1
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# BROKEN-GNU: Relocation section '.relr.dyn' at offset 0x34 contains <?> entries:
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# BROKEN-GNU-NEXT: Offset Info Type Sym. Value Symbol's Name
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# BROKEN-GNU-NEXT: warning: '[[FILE]]': unable to read relocations from [[SECNAME]] section with index 1: section [index 1] has an invalid sh_entsize: 1
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## Case B: check the case when relocations can't be read from an SHT_ANDROID_RELR section.
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## SHT_ANDROID_RELR = 0x6fffff00.
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# RUN: yaml2obj --docnum=2 -DENTSIZE=1 -DSHTYPE=0x6fffff00 %s -o %t2.broken.android
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# RUN: llvm-readobj --relocations %t2.broken.android 2>&1 | \
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# RUN: FileCheck -DFILE=%t2.broken.android --check-prefix=BROKEN-LLVM %s -DSECNAME=SHT_ANDROID_RELR
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# RUN: not llvm-readelf --relocations %t2.broken.android 2>&1 | \
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# RUN: FileCheck -DFILE=%t2.broken.android --check-prefix=BROKEN-GNU %s
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# RUN: llvm-readelf --relocations %t2.broken.android 2>&1 | \
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# RUN: FileCheck -DFILE=%t2.broken.android --check-prefix=BROKEN-GNU %s -DSECNAME=SHT_ANDROID_RELR
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## Check the behavior when the sh_link field of the SHT_RELR/SHT_ANDROID_RELR section
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## is set to an arbitrary value. Normally, it is set to 0, because such sections contains
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@ -3749,30 +3749,47 @@ static bool isRelocationSec(const typename ELFT::Shdr &Sec) {
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}
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template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) {
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auto GetEntriesNum = [&](const Elf_Shdr &Sec) -> Expected<size_t> {
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// Android's packed relocation section needs to be unpacked first
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// to get the actual number of entries.
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if (Sec.sh_type == ELF::SHT_ANDROID_REL ||
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Sec.sh_type == ELF::SHT_ANDROID_RELA) {
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Expected<std::vector<typename ELFT::Rela>> RelasOrErr =
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Obj->android_relas(&Sec);
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if (!RelasOrErr)
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return RelasOrErr.takeError();
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return RelasOrErr->size();
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}
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if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR ||
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Sec.sh_type == ELF::SHT_ANDROID_RELR)) {
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Expected<Elf_Relr_Range> RelrsOrErr = Obj->relrs(&Sec);
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if (!RelrsOrErr)
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return RelrsOrErr.takeError();
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return Obj->decode_relrs(*RelrsOrErr).size();
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}
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return Sec.getEntityCount();
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};
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bool HasRelocSections = false;
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for (const Elf_Shdr &Sec : cantFail(Obj->sections())) {
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if (!isRelocationSec<ELFT>(Sec))
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continue;
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HasRelocSections = true;
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unsigned Entries;
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// Android's packed relocation section needs to be unpacked first
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// to get the actual number of entries.
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if (Sec.sh_type == ELF::SHT_ANDROID_REL ||
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Sec.sh_type == ELF::SHT_ANDROID_RELA) {
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Entries = unwrapOrError(this->FileName, Obj->android_relas(&Sec)).size();
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} else if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR ||
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Sec.sh_type == ELF::SHT_ANDROID_RELR)) {
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Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(&Sec));
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Entries = Obj->decode_relrs(Relrs).size();
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} else {
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Entries = Sec.getEntityCount();
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}
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std::string EntriesNum = "<?>";
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if (Expected<size_t> NumOrErr = GetEntriesNum(Sec))
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EntriesNum = std::to_string(*NumOrErr);
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else
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this->reportUniqueWarning(createError(
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"unable to get the number of relocations in " + describe(Obj, Sec) +
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": " + toString(NumOrErr.takeError())));
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uintX_t Offset = Sec.sh_offset;
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StringRef Name = this->getPrintableSectionName(Obj, Sec);
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OS << "\nRelocation section '" << Name << "' at offset 0x"
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<< to_hexString(Offset, false) << " contains " << Entries
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<< to_hexString(Offset, false) << " contains " << EntriesNum
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<< " entries:\n";
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printRelocHeader(Sec.sh_type);
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this->printRelocationsHelper(Obj, Sec);
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