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Diffstat (limited to 'lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp')
-rw-r--r--lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp83
1 files changed, 44 insertions, 39 deletions
diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
index b8537b1..c5bad8e 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
@@ -41,7 +41,7 @@ error_code check(error_code Err) {
template<class ELFT>
class DyldELFObject
: public ELFObjectFile<ELFT> {
- LLVM_ELF_IMPORT_TYPES(ELFT)
+ LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
typedef Elf_Sym_Impl<ELFT> Elf_Sym;
@@ -560,6 +560,12 @@ void RuntimeDyldELF::resolvePPC64Relocation(const SectionEntry &Section,
}
}
+void RuntimeDyldELF::resolveRelocation(const RelocationEntry &RE,
+ uint64_t Value) {
+ const SectionEntry &Section = Sections[RE.SectionID];
+ return resolveRelocation(Section, RE.Offset, Value, RE.RelType, RE.Addend);
+}
+
void RuntimeDyldELF::resolveRelocation(const SectionEntry &Section,
uint64_t Offset,
uint64_t Value,
@@ -593,15 +599,18 @@ void RuntimeDyldELF::resolveRelocation(const SectionEntry &Section,
}
}
-void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
+void RuntimeDyldELF::processRelocationRef(unsigned SectionID,
+ RelocationRef RelI,
ObjectImage &Obj,
ObjSectionToIDMap &ObjSectionToID,
const SymbolTableMap &Symbols,
StubMap &Stubs) {
-
- uint32_t RelType = (uint32_t)(Rel.Type & 0xffffffffL);
- intptr_t Addend = (intptr_t)Rel.AdditionalInfo;
- const SymbolRef &Symbol = Rel.Symbol;
+ uint64_t RelType;
+ Check(RelI.getType(RelType));
+ int64_t Addend;
+ Check(RelI.getAdditionalInfo(Addend));
+ SymbolRef Symbol;
+ Check(RelI.getSymbol(Symbol));
// Obtain the symbol name which is referenced in the relocation
StringRef TargetName;
@@ -617,14 +626,14 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
Symbol.getType(SymType);
if (lsi != Symbols.end()) {
Value.SectionID = lsi->second.first;
- Value.Addend = lsi->second.second;
+ Value.Addend = lsi->second.second + Addend;
} else {
// Search for the symbol in the global symbol table
SymbolTableMap::const_iterator gsi =
GlobalSymbolTable.find(TargetName.data());
if (gsi != GlobalSymbolTable.end()) {
Value.SectionID = gsi->second.first;
- Value.Addend = gsi->second.second;
+ Value.Addend = gsi->second.second + Addend;
} else {
switch (SymType) {
case SymbolRef::ST_Debug: {
@@ -657,8 +666,11 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
}
}
}
- DEBUG(dbgs() << "\t\tRel.SectionID: " << Rel.SectionID
- << " Rel.Offset: " << Rel.Offset
+ uint64_t Offset;
+ Check(RelI.getOffset(Offset));
+
+ DEBUG(dbgs() << "\t\tSectionID: " << SectionID
+ << " Offset: " << Offset
<< "\n");
if (Arch == Triple::arm &&
(RelType == ELF::R_ARM_PC24 ||
@@ -666,12 +678,12 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
RelType == ELF::R_ARM_JUMP24)) {
// This is an ARM branch relocation, need to use a stub function.
DEBUG(dbgs() << "\t\tThis is an ARM branch relocation.");
- SectionEntry &Section = Sections[Rel.SectionID];
+ SectionEntry &Section = Sections[SectionID];
// Look for an existing stub.
StubMap::const_iterator i = Stubs.find(Value);
if (i != Stubs.end()) {
- resolveRelocation(Section, Rel.Offset,
+ resolveRelocation(Section, Offset,
(uint64_t)Section.Address + i->second, RelType, 0);
DEBUG(dbgs() << " Stub function found\n");
} else {
@@ -680,14 +692,14 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
Stubs[Value] = Section.StubOffset;
uint8_t *StubTargetAddr = createStubFunction(Section.Address +
Section.StubOffset);
- RelocationEntry RE(Rel.SectionID, StubTargetAddr - Section.Address,
+ RelocationEntry RE(SectionID, StubTargetAddr - Section.Address,
ELF::R_ARM_ABS32, Value.Addend);
if (Value.SymbolName)
addRelocationForSymbol(RE, Value.SymbolName);
else
addRelocationForSection(RE, Value.SectionID);
- resolveRelocation(Section, Rel.Offset,
+ resolveRelocation(Section, Offset,
(uint64_t)Section.Address + Section.StubOffset,
RelType, 0);
Section.StubOffset += getMaxStubSize();
@@ -696,8 +708,8 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
RelType == ELF::R_MIPS_26) {
// This is an Mips branch relocation, need to use a stub function.
DEBUG(dbgs() << "\t\tThis is a Mips branch relocation.");
- SectionEntry &Section = Sections[Rel.SectionID];
- uint8_t *Target = Section.Address + Rel.Offset;
+ SectionEntry &Section = Sections[SectionID];
+ uint8_t *Target = Section.Address + Offset;
uint32_t *TargetAddress = (uint32_t *)Target;
// Extract the addend from the instruction.
@@ -708,7 +720,7 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
// Look up for existing stub.
StubMap::const_iterator i = Stubs.find(Value);
if (i != Stubs.end()) {
- resolveRelocation(Section, Rel.Offset,
+ resolveRelocation(Section, Offset,
(uint64_t)Section.Address + i->second, RelType, 0);
DEBUG(dbgs() << " Stub function found\n");
} else {
@@ -719,10 +731,10 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
Section.StubOffset);
// Creating Hi and Lo relocations for the filled stub instructions.
- RelocationEntry REHi(Rel.SectionID,
+ RelocationEntry REHi(SectionID,
StubTargetAddr - Section.Address,
ELF::R_MIPS_HI16, Value.Addend);
- RelocationEntry RELo(Rel.SectionID,
+ RelocationEntry RELo(SectionID,
StubTargetAddr - Section.Address + 4,
ELF::R_MIPS_LO16, Value.Addend);
@@ -734,7 +746,7 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
addRelocationForSection(RELo, Value.SectionID);
}
- resolveRelocation(Section, Rel.Offset,
+ resolveRelocation(Section, Offset,
(uint64_t)Section.Address + Section.StubOffset,
RelType, 0);
Section.StubOffset += getMaxStubSize();
@@ -744,8 +756,8 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
// A PPC branch relocation will need a stub function if the target is
// an external symbol (Symbol::ST_Unknown) or if the target address
// is not within the signed 24-bits branch address.
- SectionEntry &Section = Sections[Rel.SectionID];
- uint8_t *Target = Section.Address + Rel.Offset;
+ SectionEntry &Section = Sections[SectionID];
+ uint8_t *Target = Section.Address + Offset;
bool RangeOverflow = false;
if (SymType != SymbolRef::ST_Unknown) {
// A function call may points to the .opd entry, so the final symbol value
@@ -755,7 +767,7 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
int32_t delta = static_cast<int32_t>(Target - RelocTarget);
// If it is within 24-bits branch range, just set the branch target
if (SignExtend32<24>(delta) == delta) {
- RelocationEntry RE(Rel.SectionID, Rel.Offset, RelType, Value.Addend);
+ RelocationEntry RE(SectionID, Offset, RelType, Value.Addend);
if (Value.SymbolName)
addRelocationForSymbol(RE, Value.SymbolName);
else
@@ -770,7 +782,7 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
StubMap::const_iterator i = Stubs.find(Value);
if (i != Stubs.end()) {
// Symbol function stub already created, just relocate to it
- resolveRelocation(Section, Rel.Offset,
+ resolveRelocation(Section, Offset,
(uint64_t)Section.Address + i->second, RelType, 0);
DEBUG(dbgs() << " Stub function found\n");
} else {
@@ -779,21 +791,21 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
Stubs[Value] = Section.StubOffset;
uint8_t *StubTargetAddr = createStubFunction(Section.Address +
Section.StubOffset);
- RelocationEntry RE(Rel.SectionID, StubTargetAddr - Section.Address,
+ RelocationEntry RE(SectionID, StubTargetAddr - Section.Address,
ELF::R_PPC64_ADDR64, Value.Addend);
// Generates the 64-bits address loads as exemplified in section
// 4.5.1 in PPC64 ELF ABI.
- RelocationEntry REhst(Rel.SectionID,
+ RelocationEntry REhst(SectionID,
StubTargetAddr - Section.Address + 2,
ELF::R_PPC64_ADDR16_HIGHEST, Value.Addend);
- RelocationEntry REhr(Rel.SectionID,
+ RelocationEntry REhr(SectionID,
StubTargetAddr - Section.Address + 6,
ELF::R_PPC64_ADDR16_HIGHER, Value.Addend);
- RelocationEntry REh(Rel.SectionID,
+ RelocationEntry REh(SectionID,
StubTargetAddr - Section.Address + 14,
ELF::R_PPC64_ADDR16_HI, Value.Addend);
- RelocationEntry REl(Rel.SectionID,
+ RelocationEntry REl(SectionID,
StubTargetAddr - Section.Address + 18,
ELF::R_PPC64_ADDR16_LO, Value.Addend);
@@ -809,7 +821,7 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
addRelocationForSection(REl, Value.SectionID);
}
- resolveRelocation(Section, Rel.Offset,
+ resolveRelocation(Section, Offset,
(uint64_t)Section.Address + Section.StubOffset,
RelType, 0);
if (SymType == SymbolRef::ST_Unknown)
@@ -819,7 +831,7 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
}
}
} else {
- RelocationEntry RE(Rel.SectionID, Rel.Offset, RelType, Value.Addend);
+ RelocationEntry RE(SectionID, Offset, RelType, Value.Addend);
// Extra check to avoid relocation againt empty symbols (usually
// the R_PPC64_TOC).
if (Value.SymbolName && !TargetName.empty())
@@ -828,7 +840,7 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
addRelocationForSection(RE, Value.SectionID);
}
} else {
- RelocationEntry RE(Rel.SectionID, Rel.Offset, RelType, Value.Addend);
+ RelocationEntry RE(SectionID, Offset, RelType, Value.Addend);
if (Value.SymbolName)
addRelocationForSymbol(RE, Value.SymbolName);
else
@@ -836,13 +848,6 @@ void RuntimeDyldELF::processRelocationRef(const ObjRelocationInfo &Rel,
}
}
-unsigned RuntimeDyldELF::getCommonSymbolAlignment(const SymbolRef &Sym) {
- // In ELF, the value of an SHN_COMMON symbol is its alignment requirement.
- uint64_t Align;
- Check(Sym.getValue(Align));
- return Align;
-}
-
bool RuntimeDyldELF::isCompatibleFormat(const ObjectBuffer *Buffer) const {
if (Buffer->getBufferSize() < strlen(ELF::ElfMagic))
return false;
generated by cgit v1.1 at 2025-11-11 06:36:31 +0000