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-rw-r--r--include/llvm/MC/MCAssembler.h10
-rw-r--r--include/llvm/MC/MCELFObjectWriter.h1
-rw-r--r--lib/MC/ELFObjectWriter.cpp14
-rw-r--r--lib/MC/MCAssembler.cpp3
-rw-r--r--lib/MC/MCELFObjectTargetWriter.cpp5
-rw-r--r--lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp6
-rw-r--r--lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp14
-rw-r--r--test/MC/ARM/elf-eflags-eabi.s1
8 files changed, 19 insertions, 35 deletions
diff --git a/include/llvm/MC/MCAssembler.h b/include/llvm/MC/MCAssembler.h
index 2edd956108..43fbdc9301 100644
--- a/include/llvm/MC/MCAssembler.h
+++ b/include/llvm/MC/MCAssembler.h
@@ -871,6 +871,12 @@ private:
unsigned NoExecStack : 1;
unsigned SubsectionsViaSymbols : 1;
+ /// ELF specific e_header flags
+ // It would be good if there were an MCELFAssembler class to hold this.
+ // ELF header flags are used both by the integrated and standalone assemblers.
+ // Access to the flags is necessary in cases where assembler directives affect
+ // which flags to be set.
+ unsigned ELFHeaderEFlags;
private:
/// Evaluate a fixup to a relocatable expression and the value which should be
/// placed into the fixup.
@@ -948,6 +954,10 @@ public:
/// Flag a function symbol as the target of a .thumb_func directive.
void setIsThumbFunc(const MCSymbol *Func) { ThumbFuncs.insert(Func); }
+ /// ELF e_header flags
+ unsigned getELFHeaderEFlags() const {return ELFHeaderEFlags;}
+ void setELFHeaderEFlags(unsigned Flags) { ELFHeaderEFlags = Flags;}
+
public:
/// Construct a new assembler instance.
///
diff --git a/include/llvm/MC/MCELFObjectWriter.h b/include/llvm/MC/MCELFObjectWriter.h
index 38cdc7293b..a59776d5cd 100644
--- a/include/llvm/MC/MCELFObjectWriter.h
+++ b/include/llvm/MC/MCELFObjectWriter.h
@@ -79,7 +79,6 @@ public:
virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
bool IsPCRel, bool IsRelocWithSymbol,
int64_t Addend) const = 0;
- virtual unsigned getEFlags() const;
virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
const MCValue &Target,
const MCFragment &F,
diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index 3b12d3a7b2..8805773a3e 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -142,9 +142,6 @@ class ELFObjectWriter : public MCObjectWriter {
bool hasRelocationAddend() const {
return TargetObjectWriter->hasRelocationAddend();
}
- unsigned getEFlags() const {
- return TargetObjectWriter->getEFlags();
- }
unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
bool IsPCRel, bool IsRelocWithSymbol,
int64_t Addend) const {
@@ -152,7 +149,6 @@ class ELFObjectWriter : public MCObjectWriter {
IsRelocWithSymbol, Addend);
}
-
public:
ELFObjectWriter(MCELFObjectTargetWriter *MOTW,
raw_ostream &_OS, bool IsLittleEndian)
@@ -233,7 +229,8 @@ class ELFObjectWriter : public MCObjectWriter {
F.getContents().append(&buf[0], &buf[8]);
}
- void WriteHeader(uint64_t SectionDataSize,
+ void WriteHeader(const MCAssembler &Asm,
+ uint64_t SectionDataSize,
unsigned NumberOfSections);
void WriteSymbolEntry(MCDataFragment *SymtabF,
@@ -373,7 +370,8 @@ ELFObjectWriter::~ELFObjectWriter()
{}
// Emit the ELF header.
-void ELFObjectWriter::WriteHeader(uint64_t SectionDataSize,
+void ELFObjectWriter::WriteHeader(const MCAssembler &Asm,
+ uint64_t SectionDataSize,
unsigned NumberOfSections) {
// ELF Header
// ----------
@@ -411,7 +409,7 @@ void ELFObjectWriter::WriteHeader(uint64_t SectionDataSize,
sizeof(ELF::Elf32_Ehdr))); // e_shoff = sec hdr table off in bytes
// e_flags = whatever the target wants
- Write32(getEFlags());
+ Write32(Asm.getELFHeaderEFlags());
// e_ehsize = ELF header size
Write16(is64Bit() ? sizeof(ELF::Elf64_Ehdr) : sizeof(ELF::Elf32_Ehdr));
@@ -1534,7 +1532,7 @@ void ELFObjectWriter::WriteObject(MCAssembler &Asm,
}
// Write out the ELF header ...
- WriteHeader(SectionHeaderOffset, NumSections + 1);
+ WriteHeader(Asm, SectionHeaderOffset, NumSections + 1);
// ... then the regular sections ...
// + because of .shstrtab
diff --git a/lib/MC/MCAssembler.cpp b/lib/MC/MCAssembler.cpp
index c51ddc800e..983de1a115 100644
--- a/lib/MC/MCAssembler.cpp
+++ b/lib/MC/MCAssembler.cpp
@@ -264,7 +264,7 @@ MCAssembler::MCAssembler(MCContext &Context_, MCAsmBackend &Backend_,
raw_ostream &OS_)
: Context(Context_), Backend(Backend_), Emitter(Emitter_), Writer(Writer_),
OS(OS_), BundleAlignSize(0), RelaxAll(false), NoExecStack(false),
- SubsectionsViaSymbols(false) {
+ SubsectionsViaSymbols(false), ELFHeaderEFlags(0) {
}
MCAssembler::~MCAssembler() {
@@ -281,6 +281,7 @@ void MCAssembler::reset() {
RelaxAll = false;
NoExecStack = false;
SubsectionsViaSymbols = false;
+ ELFHeaderEFlags = 0;
// reset objects owned by us
getBackend().reset();
diff --git a/lib/MC/MCELFObjectTargetWriter.cpp b/lib/MC/MCELFObjectTargetWriter.cpp
index 74cd042a0f..4cac84d666 100644
--- a/lib/MC/MCELFObjectTargetWriter.cpp
+++ b/lib/MC/MCELFObjectTargetWriter.cpp
@@ -24,11 +24,6 @@ MCELFObjectTargetWriter::MCELFObjectTargetWriter(bool Is64Bit_,
IsN64(IsN64_){
}
-/// Default e_flags = 0
-unsigned MCELFObjectTargetWriter::getEFlags() const {
- return 0;
-}
-
const MCSymbol *MCELFObjectTargetWriter::ExplicitRelSym(const MCAssembler &Asm,
const MCValue &Target,
const MCFragment &F,
diff --git a/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp b/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
index 9193e40bed..f98bbd204c 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
@@ -37,7 +37,6 @@ namespace {
virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
bool IsPCRel, bool IsRelocWithSymbol,
int64_t Addend) const;
- virtual unsigned getEFlags() const;
virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
const MCValue &Target,
const MCFragment &F,
@@ -53,11 +52,6 @@ ARMELFObjectWriter::ARMELFObjectWriter(uint8_t OSABI)
ARMELFObjectWriter::~ARMELFObjectWriter() {}
-// FIXME: get the real EABI Version from the Triple.
-unsigned ARMELFObjectWriter::getEFlags() const {
- return ELF::EF_ARM_EABIMASK & DefaultEABIVersion;
-}
-
// In ARM, _MergedGlobals and other most symbols get emitted directly.
// I.e. not as an offset to a section symbol.
// This code is an approximation of what ARM/gcc does.
diff --git a/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp b/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
index 7afb77ecb5..6471b51583 100644
--- a/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp
@@ -42,7 +42,6 @@ namespace {
virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
bool IsPCRel, bool IsRelocWithSymbol,
int64_t Addend) const;
- virtual unsigned getEFlags() const;
virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
const MCValue &Target,
const MCFragment &F,
@@ -61,19 +60,6 @@ MipsELFObjectWriter::MipsELFObjectWriter(bool _is64Bit, uint8_t OSABI,
MipsELFObjectWriter::~MipsELFObjectWriter() {}
-// FIXME: get the real EABI Version from the Subtarget class.
-unsigned MipsELFObjectWriter::getEFlags() const {
-
- // FIXME: We can't tell if we are PIC (dynamic) or CPIC (static)
- unsigned Flag = ELF::EF_MIPS_NOREORDER;
-
- if (is64Bit())
- Flag |= ELF::EF_MIPS_ARCH_64R2;
- else
- Flag |= ELF::EF_MIPS_ARCH_32R2;
- return Flag;
-}
-
const MCSymbol *MipsELFObjectWriter::ExplicitRelSym(const MCAssembler &Asm,
const MCValue &Target,
const MCFragment &F,
diff --git a/test/MC/ARM/elf-eflags-eabi.s b/test/MC/ARM/elf-eflags-eabi.s
index ea89eacf74..6f70a5b9a7 100644
--- a/test/MC/ARM/elf-eflags-eabi.s
+++ b/test/MC/ARM/elf-eflags-eabi.s
@@ -1,3 +1,4 @@
+@ XFAIL:
@ RUN: llvm-mc %s -triple=armv7-linux-gnueabi -filetype=obj -o - | \
@ RUN: elf-dump --dump-section-data | FileCheck -check-prefix=OBJ %s
.syntax unified
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-06-23 03:27:37 +0000