#ifndef LLVM_OBJECT_ELFTYPES_H
#define LLVM_OBJECT_ELFTYPES_H
-#include "llvm/Support/AlignOf.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Object/Error.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/Endian.h"
+#include "llvm/Support/ErrorOr.h"
namespace llvm {
namespace object {
using support::endianness;
-template <endianness target_endianness, std::size_t max_alignment,
- bool is64Bits>
-struct ELFType {
+template <endianness target_endianness, bool is64Bits> struct ELFType {
static const endianness TargetEndianness = target_endianness;
- static const std::size_t MaxAlignment = max_alignment;
static const bool Is64Bits = is64Bits;
};
-template <typename T, int max_align> struct MaximumAlignment {
- enum { value = AlignOf<T>::Alignment > max_align ? max_align
- : AlignOf<T>::Alignment
- };
-};
+typedef ELFType<support::little, false> ELF32LE;
+typedef ELFType<support::big, false> ELF32BE;
+typedef ELFType<support::little, true> ELF64LE;
+typedef ELFType<support::big, true> ELF64BE;
+
+// Use an alignment of 2 for the typedefs since that is the worst case for
+// ELF files in archives.
// Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
-template <endianness target_endianness, std::size_t max_alignment>
-struct ELFDataTypeTypedefHelperCommon {
+template <endianness target_endianness> struct ELFDataTypeTypedefHelperCommon {
typedef support::detail::packed_endian_specific_integral<
- uint16_t, target_endianness,
- MaximumAlignment<uint16_t, max_alignment>::value> Elf_Half;
+ uint16_t, target_endianness, 2> Elf_Half;
typedef support::detail::packed_endian_specific_integral<
- uint32_t, target_endianness,
- MaximumAlignment<uint32_t, max_alignment>::value> Elf_Word;
+ uint32_t, target_endianness, 2> Elf_Word;
typedef support::detail::packed_endian_specific_integral<
- int32_t, target_endianness,
- MaximumAlignment<int32_t, max_alignment>::value> Elf_Sword;
+ int32_t, target_endianness, 2> Elf_Sword;
typedef support::detail::packed_endian_specific_integral<
- uint64_t, target_endianness,
- MaximumAlignment<uint64_t, max_alignment>::value> Elf_Xword;
+ uint64_t, target_endianness, 2> Elf_Xword;
typedef support::detail::packed_endian_specific_integral<
- int64_t, target_endianness,
- MaximumAlignment<int64_t, max_alignment>::value> Elf_Sxword;
+ int64_t, target_endianness, 2> Elf_Sxword;
};
template <class ELFT> struct ELFDataTypeTypedefHelper;
/// ELF 32bit types.
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, false> >
- : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
+template <endianness TargetEndianness>
+struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, false>>
+ : ELFDataTypeTypedefHelperCommon<TargetEndianness> {
typedef uint32_t value_type;
typedef support::detail::packed_endian_specific_integral<
- value_type, TargetEndianness,
- MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
+ value_type, TargetEndianness, 2> Elf_Addr;
typedef support::detail::packed_endian_specific_integral<
- value_type, TargetEndianness,
- MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
+ value_type, TargetEndianness, 2> Elf_Off;
};
/// ELF 64bit types.
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, true> >
- : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
+template <endianness TargetEndianness>
+struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, true>>
+ : ELFDataTypeTypedefHelperCommon<TargetEndianness> {
typedef uint64_t value_type;
typedef support::detail::packed_endian_specific_integral<
- value_type, TargetEndianness,
- MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
+ value_type, TargetEndianness, 2> Elf_Addr;
typedef support::detail::packed_endian_specific_integral<
- value_type, TargetEndianness,
- MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
+ value_type, TargetEndianness, 2> Elf_Off;
};
// I really don't like doing this, but the alternative is copypasta.
-#define LLVM_ELF_IMPORT_TYPES(E, M, W) \
-typedef typename ELFDataTypeTypedefHelper<ELFType<E, M, W> >::Elf_Addr \
- Elf_Addr; \
-typedef typename ELFDataTypeTypedefHelper<ELFType<E, M, W> >::Elf_Off \
- Elf_Off; \
-typedef typename ELFDataTypeTypedefHelper<ELFType<E, M, W> >::Elf_Half \
- Elf_Half; \
-typedef typename ELFDataTypeTypedefHelper<ELFType<E, M, W> >::Elf_Word \
- Elf_Word; \
-typedef typename ELFDataTypeTypedefHelper<ELFType<E, M, W> >::Elf_Sword \
- Elf_Sword; \
-typedef typename ELFDataTypeTypedefHelper<ELFType<E, M, W> >::Elf_Xword \
- Elf_Xword; \
-typedef typename ELFDataTypeTypedefHelper<ELFType<E, M, W> >::Elf_Sxword \
- Elf_Sxword;
+#define LLVM_ELF_IMPORT_TYPES(E, W) \
+ typedef typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Addr Elf_Addr; \
+ typedef typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Off Elf_Off; \
+ typedef typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Half Elf_Half; \
+ typedef typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Word Elf_Word; \
+ typedef \
+ typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Sword Elf_Sword; \
+ typedef \
+ typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Xword Elf_Xword; \
+ typedef \
+ typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Sxword Elf_Sxword;
#define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) \
- LLVM_ELF_IMPORT_TYPES(ELFT::TargetEndianness, ELFT::MaxAlignment, \
- ELFT::Is64Bits)
+ LLVM_ELF_IMPORT_TYPES(ELFT::TargetEndianness, ELFT::Is64Bits)
// Section header.
template <class ELFT> struct Elf_Shdr_Base;
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, false> > {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
+template <endianness TargetEndianness>
+struct Elf_Shdr_Base<ELFType<TargetEndianness, false>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
Elf_Word sh_name; // Section name (index into string table)
Elf_Word sh_type; // Section type (SHT_*)
Elf_Word sh_flags; // Section flags (SHF_*)
Elf_Word sh_entsize; // Size of records contained within the section
};
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, true> > {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
+template <endianness TargetEndianness>
+struct Elf_Shdr_Base<ELFType<TargetEndianness, true>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
Elf_Word sh_name; // Section name (index into string table)
Elf_Word sh_type; // Section type (SHT_*)
Elf_Xword sh_flags; // Section flags (SHF_*)
template <class ELFT> struct Elf_Sym_Base;
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, false> > {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
+template <endianness TargetEndianness>
+struct Elf_Sym_Base<ELFType<TargetEndianness, false>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
Elf_Word st_name; // Symbol name (index into string table)
Elf_Addr st_value; // Value or address associated with the symbol
Elf_Word st_size; // Size of the symbol
Elf_Half st_shndx; // Which section (header table index) it's defined in
};
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, true> > {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
+template <endianness TargetEndianness>
+struct Elf_Sym_Base<ELFType<TargetEndianness, true>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
Elf_Word st_name; // Symbol name (index into string table)
unsigned char st_info; // Symbol's type and binding attributes
unsigned char st_other; // Must be zero; reserved
template <class ELFT>
struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
using Elf_Sym_Base<ELFT>::st_info;
+ using Elf_Sym_Base<ELFT>::st_shndx;
using Elf_Sym_Base<ELFT>::st_other;
+ using Elf_Sym_Base<ELFT>::st_value;
// These accessors and mutators correspond to the ELF32_ST_BIND,
// ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
unsigned char getBinding() const { return st_info >> 4; }
unsigned char getType() const { return st_info & 0x0f; }
+ uint64_t getValue() const { return st_value; }
void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
void setBindingAndType(unsigned char b, unsigned char t) {
}
/// Access to the STV_xxx flag stored in the first two bits of st_other.
+ /// STV_DEFAULT: 0
+ /// STV_INTERNAL: 1
+ /// STV_HIDDEN: 2
+ /// STV_PROTECTED: 3
unsigned char getVisibility() const { return st_other & 0x3; }
+ void setVisibility(unsigned char v) {
+ assert(v < 4 && "Invalid value for visibility");
+ st_other = (st_other & ~0x3) | v;
+ }
+
+ bool isAbsolute() const { return st_shndx == ELF::SHN_ABS; }
+ bool isCommon() const {
+ return getType() == ELF::STT_COMMON || st_shndx == ELF::SHN_COMMON;
+ }
+ bool isDefined() const { return !isUndefined(); }
+ bool isProcessorSpecific() const {
+ return st_shndx >= ELF::SHN_LOPROC && st_shndx <= ELF::SHN_HIPROC;
+ }
+ bool isOSSpecific() const {
+ return st_shndx >= ELF::SHN_LOOS && st_shndx <= ELF::SHN_HIOS;
+ }
+ bool isReserved() const {
+ // ELF::SHN_HIRESERVE is 0xffff so st_shndx <= ELF::SHN_HIRESERVE is always
+ // true and some compilers warn about it.
+ return st_shndx >= ELF::SHN_LORESERVE;
+ }
+ bool isUndefined() const { return st_shndx == ELF::SHN_UNDEF; }
+ bool isExternal() const {
+ return getBinding() != ELF::STB_LOCAL;
+ }
+
+ ErrorOr<StringRef> getName(StringRef StrTab) const;
};
+template <class ELFT>
+ErrorOr<StringRef> Elf_Sym_Impl<ELFT>::getName(StringRef StrTab) const {
+ uint32_t Offset = this->st_name;
+ if (Offset >= StrTab.size())
+ return object_error::parse_failed;
+ return StringRef(StrTab.data() + Offset);
+}
+
/// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
/// (.gnu.version). This structure is identical for ELF32 and ELF64.
template <class ELFT>
/// table section (.dynamic) look like.
template <class ELFT> struct Elf_Dyn_Base;
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, false> > {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
+template <endianness TargetEndianness>
+struct Elf_Dyn_Base<ELFType<TargetEndianness, false>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
Elf_Sword d_tag;
union {
Elf_Word d_val;
} d_un;
};
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, true> > {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
+template <endianness TargetEndianness>
+struct Elf_Dyn_Base<ELFType<TargetEndianness, true>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
Elf_Sxword d_tag;
union {
Elf_Xword d_val;
using Elf_Dyn_Base<ELFT>::d_un;
int64_t getTag() const { return d_tag; }
uint64_t getVal() const { return d_un.d_val; }
- uint64_t getPtr() const { return d_un.ptr; }
+ uint64_t getPtr() const { return d_un.d_ptr; }
};
// Elf_Rel: Elf Relocation
-template <class ELFT, bool isRela> struct Elf_Rel_Base;
+template <class ELFT, bool isRela> struct Elf_Rel_Impl;
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, false> {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
+template <endianness TargetEndianness>
+struct Elf_Rel_Impl<ELFType<TargetEndianness, false>, false> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
Elf_Word r_info; // Symbol table index and type of relocation to apply
assert(!IsMips64EL);
r_info = R;
}
-};
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, false> {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
- Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
- Elf_Xword r_info; // Symbol table index and type of relocation to apply
-
- uint64_t getRInfo(bool isMips64EL) const {
- uint64_t t = r_info;
- if (!isMips64EL)
- return t;
- // Mips64 little endian has a "special" encoding of r_info. Instead of one
- // 64 bit little endian number, it is a little endian 32 bit number followed
- // by a 32 bit big endian number.
- return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
- ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
+ // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
+ // and ELF32_R_INFO macros defined in the ELF specification:
+ uint32_t getSymbol(bool isMips64EL) const {
+ return this->getRInfo(isMips64EL) >> 8;
}
- void setRInfo(uint64_t R, bool IsMips64EL) {
- if (IsMips64EL)
- r_info = (R >> 32) | ((R & 0xff000000) << 8) | ((R & 0x00ff0000) << 24) |
- ((R & 0x0000ff00) << 40) | ((R & 0x000000ff) << 56);
- else
- r_info = R;
+ unsigned char getType(bool isMips64EL) const {
+ return (unsigned char)(this->getRInfo(isMips64EL) & 0x0ff);
+ }
+ void setSymbol(uint32_t s, bool IsMips64EL) {
+ setSymbolAndType(s, getType(), IsMips64EL);
+ }
+ void setType(unsigned char t, bool IsMips64EL) {
+ setSymbolAndType(getSymbol(), t, IsMips64EL);
+ }
+ void setSymbolAndType(uint32_t s, unsigned char t, bool IsMips64EL) {
+ this->setRInfo((s << 8) + t, IsMips64EL);
}
};
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, true> {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
- Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
- Elf_Word r_info; // Symbol table index and type of relocation to apply
+template <endianness TargetEndianness>
+struct Elf_Rel_Impl<ELFType<TargetEndianness, false>, true>
+ : public Elf_Rel_Impl<ELFType<TargetEndianness, false>, false> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
Elf_Sword r_addend; // Compute value for relocatable field by adding this
-
- uint32_t getRInfo(bool isMips64EL) const {
- assert(!isMips64EL);
- return r_info;
- }
- void setRInfo(uint32_t R, bool IsMips64EL) {
- assert(!IsMips64EL);
- r_info = R;
- }
};
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, true> {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
- Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
- Elf_Xword r_info; // Symbol table index and type of relocation to apply
- Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
+template <endianness TargetEndianness>
+struct Elf_Rel_Impl<ELFType<TargetEndianness, true>, false> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
+ Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
+ Elf_Xword r_info; // Symbol table index and type of relocation to apply
uint64_t getRInfo(bool isMips64EL) const {
- // Mips64 little endian has a "special" encoding of r_info. Instead of one
- // 64 bit little endian number, it is a little endian 32 bit number followed
- // by a 32 bit big endian number.
uint64_t t = r_info;
if (!isMips64EL)
return t;
+ // Mips64 little endian has a "special" encoding of r_info. Instead of one
+ // 64 bit little endian number, it is a little endian 32 bit number followed
+ // by a 32 bit big endian number.
return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
}
else
r_info = R;
}
-};
-
-template <class ELFT, bool isRela> struct Elf_Rel_Impl;
-
-template <endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
-struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, true>,
- isRela> : Elf_Rel_Base<
- ELFType<TargetEndianness, MaxAlign, true>, isRela> {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
// These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
// and ELF64_R_INFO macros defined in the ELF specification:
}
};
-template <endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
-struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, false>,
- isRela> : Elf_Rel_Base<
- ELFType<TargetEndianness, MaxAlign, false>, isRela> {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
-
- // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
- // and ELF32_R_INFO macros defined in the ELF specification:
- uint32_t getSymbol(bool isMips64EL) const {
- return this->getRInfo(isMips64EL) >> 8;
- }
- unsigned char getType(bool isMips64EL) const {
- return (unsigned char)(this->getRInfo(isMips64EL) & 0x0ff);
- }
- void setSymbol(uint32_t s, bool IsMips64EL) {
- setSymbolAndType(s, getType(), IsMips64EL);
- }
- void setType(unsigned char t, bool IsMips64EL) {
- setSymbolAndType(getSymbol(), t, IsMips64EL);
- }
- void setSymbolAndType(uint32_t s, unsigned char t, bool IsMips64EL) {
- this->setRInfo((s << 8) + t, IsMips64EL);
- }
+template <endianness TargetEndianness>
+struct Elf_Rel_Impl<ELFType<TargetEndianness, true>, true>
+ : public Elf_Rel_Impl<ELFType<TargetEndianness, true>, false> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
+ Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
};
template <class ELFT>
template <class ELFT> struct Elf_Phdr_Impl;
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, false> > {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false)
+template <endianness TargetEndianness>
+struct Elf_Phdr_Impl<ELFType<TargetEndianness, false>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
Elf_Word p_type; // Type of segment
Elf_Off p_offset; // FileOffset where segment is located, in bytes
Elf_Addr p_vaddr; // Virtual Address of beginning of segment
Elf_Word p_align; // Segment alignment constraint
};
-template <endianness TargetEndianness, std::size_t MaxAlign>
-struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, true> > {
- LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true)
+template <endianness TargetEndianness>
+struct Elf_Phdr_Impl<ELFType<TargetEndianness, true>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
Elf_Word p_type; // Type of segment
Elf_Word p_flags; // Segment flags
Elf_Off p_offset; // FileOffset where segment is located, in bytes
Elf_Xword p_align; // Segment alignment constraint
};
+// ELFT needed for endianess.
+template <class ELFT>
+struct Elf_Hash_Impl {
+ LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
+ Elf_Word nbucket;
+ Elf_Word nchain;
+
+ ArrayRef<Elf_Word> buckets() const {
+ return ArrayRef<Elf_Word>(&nbucket + 2, &nbucket + 2 + nbucket);
+ }
+
+ ArrayRef<Elf_Word> chains() const {
+ return ArrayRef<Elf_Word>(&nbucket + 2 + nbucket,
+ &nbucket + 2 + nbucket + nchain);
+ }
+};
+
+// MIPS .reginfo section
+template <class ELFT>
+struct Elf_Mips_RegInfo;
+
+template <llvm::support::endianness TargetEndianness>
+struct Elf_Mips_RegInfo<ELFType<TargetEndianness, false>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
+ Elf_Word ri_gprmask; // bit-mask of used general registers
+ Elf_Word ri_cprmask[4]; // bit-mask of used co-processor registers
+ Elf_Addr ri_gp_value; // gp register value
+};
+
+template <llvm::support::endianness TargetEndianness>
+struct Elf_Mips_RegInfo<ELFType<TargetEndianness, true>> {
+ LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
+ Elf_Word ri_gprmask; // bit-mask of used general registers
+ Elf_Word ri_pad; // unused padding field
+ Elf_Word ri_cprmask[4]; // bit-mask of used co-processor registers
+ Elf_Addr ri_gp_value; // gp register value
+};
+
+// .MIPS.options section
+template <class ELFT> struct Elf_Mips_Options {
+ LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
+ uint8_t kind; // Determines interpretation of variable part of descriptor
+ uint8_t size; // Byte size of descriptor, including this header
+ Elf_Half section; // Section header index of section affected,
+ // or 0 for global options
+ Elf_Word info; // Kind-specific information
+
+ const Elf_Mips_RegInfo<ELFT> &getRegInfo() const {
+ assert(kind == llvm::ELF::ODK_REGINFO);
+ return *reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(
+ (const uint8_t *)this + sizeof(Elf_Mips_Options));
+ }
+};
+
+// .MIPS.abiflags section content
+template <class ELFT> struct Elf_Mips_ABIFlags {
+ LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
+ Elf_Half version; // Version of the structure
+ uint8_t isa_level; // ISA level: 1-5, 32, and 64
+ uint8_t isa_rev; // ISA revision (0 for MIPS I - MIPS V)
+ uint8_t gpr_size; // General purpose registers size
+ uint8_t cpr1_size; // Co-processor 1 registers size
+ uint8_t cpr2_size; // Co-processor 2 registers size
+ uint8_t fp_abi; // Floating-point ABI flag
+ Elf_Word isa_ext; // Processor-specific extension
+ Elf_Word ases; // ASEs flags
+ Elf_Word flags1; // General flags
+ Elf_Word flags2; // General flags
+};
+
} // end namespace object.
} // end namespace llvm.