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-rw-r--r--include/llvm/Object/COFF.h4
-rw-r--r--include/llvm/Object/ELF.h64
-rw-r--r--include/llvm/Object/MachO.h4
-rw-r--r--include/llvm/Object/ObjectFile.h47
4 files changed, 94 insertions, 25 deletions
diff --git a/include/llvm/Object/COFF.h b/include/llvm/Object/COFF.h
index 91971bb..68b5ca1 100644
--- a/include/llvm/Object/COFF.h
+++ b/include/llvm/Object/COFF.h
@@ -126,6 +126,10 @@ protected:
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;
+ virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
+ virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
+ virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
+ bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
bool &Result) const;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
diff --git a/include/llvm/Object/ELF.h b/include/llvm/Object/ELF.h
index cd13bd6..0a310eb 100644
--- a/include/llvm/Object/ELF.h
+++ b/include/llvm/Object/ELF.h
@@ -35,6 +35,15 @@
namespace llvm {
namespace object {
+// Subclasses of ELFObjectFile may need this for template instantiation
+inline std::pair<unsigned char, unsigned char>
+getElfArchType(MemoryBuffer *Object) {
+ if (Object->getBufferSize() < ELF::EI_NIDENT)
+ return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
+ return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS]
+ , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]);
+}
+
// Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
template<support::endianness target_endianness>
struct ELFDataTypeTypedefHelperCommon {
@@ -292,9 +301,7 @@ class DynRefImpl {
const OwningType *OwningObject;
public:
- DynRefImpl() : OwningObject(NULL) {
- std::memset(&DynPimpl, 0, sizeof(DynPimpl));
- }
+ DynRefImpl() : OwningObject(NULL) { }
DynRefImpl(DataRefImpl DynP, const OwningType *Owner);
@@ -544,6 +551,10 @@ protected:
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;
+ virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
+ bool &Res) const;
+ virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
+ virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
bool &Result) const;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
@@ -1098,6 +1109,43 @@ error_code ELFObjectFile<target_endianness, is64Bits>
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
+ ::isSectionRequiredForExecution(DataRefImpl Sec,
+ bool &Result) const {
+ const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ if (sec->sh_flags & ELF::SHF_ALLOC)
+ Result = true;
+ else
+ Result = false;
+ return object_error::success;
+}
+
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>
+ ::isSectionVirtual(DataRefImpl Sec,
+ bool &Result) const {
+ const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ if (sec->sh_type == ELF::SHT_NOBITS)
+ Result = true;
+ else
+ Result = false;
+ return object_error::success;
+}
+
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>::isSectionZeroInit(DataRefImpl Sec,
+ bool &Result) const {
+ const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
+ // For ELF, all zero-init sections are virtual (that is, they occupy no space
+ // in the object image) and vice versa.
+ if (sec->sh_flags & ELF::SHT_NOBITS)
+ Result = true;
+ else
+ Result = false;
+ return object_error::success;
+}
+
+template<support::endianness target_endianness, bool is64Bits>
+error_code ELFObjectFile<target_endianness, is64Bits>
::sectionContainsSymbol(DataRefImpl Sec,
DataRefImpl Symb,
bool &Result) const {
@@ -1110,7 +1158,6 @@ template<support::endianness target_endianness, bool is64Bits>
relocation_iterator ELFObjectFile<target_endianness, is64Bits>
::getSectionRelBegin(DataRefImpl Sec) const {
DataRefImpl RelData;
- memset(&RelData, 0, sizeof(RelData));
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
if (sec != 0 && ittr != SectionRelocMap.end()) {
@@ -1125,7 +1172,6 @@ template<support::endianness target_endianness, bool is64Bits>
relocation_iterator ELFObjectFile<target_endianness, is64Bits>
::getSectionRelEnd(DataRefImpl Sec) const {
DataRefImpl RelData;
- memset(&RelData, 0, sizeof(RelData));
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
if (sec != 0 && ittr != SectionRelocMap.end()) {
@@ -1628,7 +1674,6 @@ template<support::endianness target_endianness, bool is64Bits>
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_symbols() const {
DataRefImpl SymbolData;
- memset(&SymbolData, 0, sizeof(SymbolData));
if (SymbolTableSections.size() <= 1) {
SymbolData.d.a = std::numeric_limits<uint32_t>::max();
SymbolData.d.b = std::numeric_limits<uint32_t>::max();
@@ -1643,7 +1688,6 @@ template<support::endianness target_endianness, bool is64Bits>
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::end_symbols() const {
DataRefImpl SymbolData;
- memset(&SymbolData, 0, sizeof(SymbolData));
SymbolData.d.a = std::numeric_limits<uint32_t>::max();
SymbolData.d.b = std::numeric_limits<uint32_t>::max();
return symbol_iterator(SymbolRef(SymbolData, this));
@@ -1653,7 +1697,6 @@ template<support::endianness target_endianness, bool is64Bits>
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_dynamic_symbols() const {
DataRefImpl SymbolData;
- memset(&SymbolData, 0, sizeof(SymbolData));
if (SymbolTableSections[0] == NULL) {
SymbolData.d.a = std::numeric_limits<uint32_t>::max();
SymbolData.d.b = std::numeric_limits<uint32_t>::max();
@@ -1668,7 +1711,6 @@ template<support::endianness target_endianness, bool is64Bits>
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::end_dynamic_symbols() const {
DataRefImpl SymbolData;
- memset(&SymbolData, 0, sizeof(SymbolData));
SymbolData.d.a = std::numeric_limits<uint32_t>::max();
SymbolData.d.b = std::numeric_limits<uint32_t>::max();
return symbol_iterator(SymbolRef(SymbolData, this));
@@ -1678,7 +1720,6 @@ template<support::endianness target_endianness, bool is64Bits>
section_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_sections() const {
DataRefImpl ret;
- memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
return section_iterator(SectionRef(ret, this));
}
@@ -1687,7 +1728,6 @@ template<support::endianness target_endianness, bool is64Bits>
section_iterator ELFObjectFile<target_endianness, is64Bits>
::end_sections() const {
DataRefImpl ret;
- memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(base()
+ Header->e_shoff
+ (Header->e_shentsize*getNumSections()));
@@ -1698,7 +1738,6 @@ template<support::endianness target_endianness, bool is64Bits>
typename ELFObjectFile<target_endianness, is64Bits>::dyn_iterator
ELFObjectFile<target_endianness, is64Bits>::begin_dynamic_table() const {
DataRefImpl DynData;
- memset(&DynData, 0, sizeof(DynData));
if (dot_dynamic_sec == NULL || dot_dynamic_sec->sh_size == 0) {
DynData.d.a = std::numeric_limits<uint32_t>::max();
} else {
@@ -1712,7 +1751,6 @@ typename ELFObjectFile<target_endianness, is64Bits>::dyn_iterator
ELFObjectFile<target_endianness, is64Bits>
::end_dynamic_table() const {
DataRefImpl DynData;
- memset(&DynData, 0, sizeof(DynData));
DynData.d.a = std::numeric_limits<uint32_t>::max();
return dyn_iterator(DynRef(DynData, this));
}
diff --git a/include/llvm/Object/MachO.h b/include/llvm/Object/MachO.h
index 1e409b2..0b73f94 100644
--- a/include/llvm/Object/MachO.h
+++ b/include/llvm/Object/MachO.h
@@ -72,6 +72,10 @@ protected:
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;
+ virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
+ bool &Res) const;
+ virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
+ virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl DRI, DataRefImpl S,
bool &Result) const;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
diff --git a/include/llvm/Object/ObjectFile.h b/include/llvm/Object/ObjectFile.h
index 09eb7fc..4dd7fb5 100644
--- a/include/llvm/Object/ObjectFile.h
+++ b/include/llvm/Object/ObjectFile.h
@@ -38,6 +38,9 @@ union DataRefImpl {
uint32_t a, b;
} d;
uintptr_t p;
+ DataRefImpl() {
+ std::memset(this, 0, sizeof(DataRefImpl));
+ }
};
template<class content_type>
@@ -94,9 +97,7 @@ class RelocationRef {
const ObjectFile *OwningObject;
public:
- RelocationRef() : OwningObject(NULL) {
- std::memset(&RelocationPimpl, 0, sizeof(RelocationPimpl));
- }
+ RelocationRef() : OwningObject(NULL) { }
RelocationRef(DataRefImpl RelocationP, const ObjectFile *Owner);
@@ -136,9 +137,7 @@ class SectionRef {
const ObjectFile *OwningObject;
public:
- SectionRef() : OwningObject(NULL) {
- std::memset(&SectionPimpl, 0, sizeof(SectionPimpl));
- }
+ SectionRef() : OwningObject(NULL) { }
SectionRef(DataRefImpl SectionP, const ObjectFile *Owner);
@@ -159,11 +158,16 @@ public:
error_code isText(bool &Result) const;
error_code isData(bool &Result) const;
error_code isBSS(bool &Result) const;
+ error_code isRequiredForExecution(bool &Result) const;
+ error_code isVirtual(bool &Result) const;
+ error_code isZeroInit(bool &Result) const;
error_code containsSymbol(SymbolRef S, bool &Result) const;
relocation_iterator begin_relocations() const;
relocation_iterator end_relocations() const;
+
+ DataRefImpl getRawDataRefImpl() const;
};
typedef content_iterator<SectionRef> section_iterator;
@@ -175,9 +179,7 @@ class SymbolRef {
const ObjectFile *OwningObject;
public:
- SymbolRef() : OwningObject(NULL) {
- std::memset(&SymbolPimpl, 0, sizeof(SymbolPimpl));
- }
+ SymbolRef() : OwningObject(NULL) { }
enum Type {
ST_Unknown, // Type not specified
@@ -220,6 +222,9 @@ public:
/// Get symbol flags (bitwise OR of SymbolRef::Flags)
error_code getFlags(uint32_t &Result) const;
+ /// @brief Return true for common symbols such as uninitialized globals
+ error_code isCommon(bool &Result) const;
+
/// @brief Get section this symbol is defined in reference to. Result is
/// end_sections() if it is undefined or is an absolute symbol.
error_code getSection(section_iterator &Result) const;
@@ -236,9 +241,7 @@ class LibraryRef {
const ObjectFile *OwningObject;
public:
- LibraryRef() : OwningObject(NULL) {
- std::memset(&LibraryPimpl, 0, sizeof(LibraryPimpl));
- }
+ LibraryRef() : OwningObject(NULL) { }
LibraryRef(DataRefImpl LibraryP, const ObjectFile *Owner);
@@ -304,6 +307,11 @@ protected:
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;
+ virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
+ bool &Res) const = 0;
+ // A section is 'virtual' if its contents aren't present in the object image.
+ virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const = 0;
+ virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const = 0;
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
bool &Result) const = 0;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const = 0;
@@ -486,6 +494,18 @@ inline error_code SectionRef::isBSS(bool &Result) const {
return OwningObject->isSectionBSS(SectionPimpl, Result);
}
+inline error_code SectionRef::isRequiredForExecution(bool &Result) const {
+ return OwningObject->isSectionRequiredForExecution(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::isVirtual(bool &Result) const {
+ return OwningObject->isSectionVirtual(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::isZeroInit(bool &Result) const {
+ return OwningObject->isSectionZeroInit(SectionPimpl, Result);
+}
+
inline error_code SectionRef::containsSymbol(SymbolRef S, bool &Result) const {
return OwningObject->sectionContainsSymbol(SectionPimpl, S.SymbolPimpl,
Result);
@@ -499,6 +519,9 @@ inline relocation_iterator SectionRef::end_relocations() const {
return OwningObject->getSectionRelEnd(SectionPimpl);
}
+inline DataRefImpl SectionRef::getRawDataRefImpl() const {
+ return SectionPimpl;
+}
/// RelocationRef
inline RelocationRef::RelocationRef(DataRefImpl RelocationP,
generated by cgit v1.1 at 2025-08-16 00:53:46 +0000