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Object: add getSectionAlignment.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141581 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer 2011-10-10 21:55:43 +00:00
parent 023bb15bea
commit e2f2f07be7
5 changed files with 43 additions and 0 deletions
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1
include/llvm/Object/COFF.h
View File

@ -107,6 +107,7 @@ protected:
virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;

8
include/llvm/Object/ObjectFile.h
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@ -181,6 +181,9 @@ public:
error_code getSize(uint64_t &Result) const;
error_code getContents(StringRef &Result) const;
/// @brief Get the alignment of this section as the actual value (not log 2).
error_code getAlignment(uint64_t &Result) const;
// FIXME: Move to the normalization layer when it's created.
error_code isText(bool &Result) const;
error_code isData(bool &Result) const;
@ -236,6 +239,7 @@ protected:
virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const =0;
virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const = 0;
virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res)const=0;
virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res)const=0;
virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const = 0;
virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const = 0;
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const = 0;
@ -372,6 +376,10 @@ inline error_code SectionRef::getContents(StringRef &Result) const {
return OwningObject->getSectionContents(SectionPimpl, Result);
}
inline error_code SectionRef::getAlignment(uint64_t &Result) const {
return OwningObject->getSectionAlignment(SectionPimpl, Result);
}
inline error_code SectionRef::isText(bool &Result) const {
return OwningObject->isSectionText(SectionPimpl, Result);
}

9
lib/Object/COFFObjectFile.cpp
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@ -336,6 +336,15 @@ error_code COFFObjectFile::getSectionContents(DataRefImpl Sec,
return object_error::success;
}
error_code COFFObjectFile::getSectionAlignment(DataRefImpl Sec,
uint64_t &Res) const {
const coff_section *sec = toSec(Sec);
if (!sec)
return object_error::parse_failed;
Res = uint64_t(1) << (((sec->Characteristics & 0x00F00000) >> 20) - 1);
return object_error::success;
}
error_code COFFObjectFile::isSectionText(DataRefImpl Sec,
bool &Result) const {
const coff_section *sec = toSec(Sec);

10
lib/Object/ELFObjectFile.cpp
View File

@ -337,6 +337,7 @@ protected:
virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
@ -671,6 +672,15 @@ error_code ELFObjectFile<target_endianness, is64Bits>
return object_error::success;
}
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getSectionAlignment(DataRefImpl Sec,
uint64_t &Result) const {
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
Result = sec->sh_addralign;
return object_error::success;
}
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::isSectionText(DataRefImpl Sec,

15
lib/Object/MachOObjectFile.cpp
View File

@ -60,6 +60,7 @@ protected:
virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
@ -481,6 +482,20 @@ error_code MachOObjectFile::getSectionContents(DataRefImpl DRI,
return object_error::success;
}
error_code MachOObjectFile::getSectionAlignment(DataRefImpl DRI,
uint64_t &Result) const {
if (is64BitLoadCommand(MachOObj, DRI)) {
InMemoryStruct<macho::Section64> Sect;
getSection64(DRI, Sect);
Result = 1 << Sect->Align;
} else {
InMemoryStruct<macho::Section> Sect;
getSection(DRI, Sect);
Result = 1 << Sect->Align;
}
return object_error::success;
}
error_code MachOObjectFile::isSectionText(DataRefImpl DRI,
bool &Result) const {
if (is64BitLoadCommand(MachOObj, DRI)) {