Add createELFObjectTargetWriter method to TargetAsmBackend, which enables construction of non-standard ELFObjectWriters that can be used in MCJIT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127346 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Target/TargetAsmBackend.h b/include/llvm/Target/TargetAsmBackend.h
index 7527298..2111f6b 100644
--- a/include/llvm/Target/TargetAsmBackend.h
+++ b/include/llvm/Target/TargetAsmBackend.h
@@ -16,6 +16,7 @@
#include "llvm/Support/DataTypes.h"
namespace llvm {
+class MCELFObjectTargetWriter;
class MCFixup;
class MCInst;
class MCObjectWriter;
@@ -40,6 +41,13 @@
/// assembler backend to emit the final object file.
virtual MCObjectWriter *createObjectWriter(raw_ostream &OS) const = 0;
+ /// createELFObjectTargetWriter - Create a new ELFObjectTargetWriter to enable
+ /// non-standard ELFObjectWriters.
+ virtual MCELFObjectTargetWriter *createELFObjectTargetWriter() const {
+ assert(0 && "createELFObjectTargetWriter is not supported by asm backend");
+ return 0;
+ }
+
/// hasReliableSymbolDifference - Check whether this target implements
/// accurate relocations for differences between symbols. If not, differences
/// between symbols will always be relocatable expressions and any references
diff --git a/lib/Target/X86/X86AsmBackend.cpp b/lib/Target/X86/X86AsmBackend.cpp
index da5f5b1..05882b5 100644
--- a/lib/Target/X86/X86AsmBackend.cpp
+++ b/lib/Target/X86/X86AsmBackend.cpp
@@ -307,10 +307,13 @@
: ELFX86AsmBackend(T, OSType) {}
MCObjectWriter *createObjectWriter(raw_ostream &OS) const {
- return createELFObjectWriter(new X86ELFObjectWriter(false, OSType,
- ELF::EM_386, false),
+ return createELFObjectWriter(createELFObjectTargetWriter(),
OS, /*IsLittleEndian*/ true);
}
+
+ MCELFObjectTargetWriter *createELFObjectTargetWriter() const {
+ return new X86ELFObjectWriter(false, OSType, ELF::EM_386, false);
+ }
};
class ELFX86_64AsmBackend : public ELFX86AsmBackend {
@@ -319,10 +322,13 @@
: ELFX86AsmBackend(T, OSType) {}
MCObjectWriter *createObjectWriter(raw_ostream &OS) const {
- return createELFObjectWriter(new X86ELFObjectWriter(true, OSType,
- ELF::EM_X86_64, true),
+ return createELFObjectWriter(createELFObjectTargetWriter(),
OS, /*IsLittleEndian*/ true);
}
+
+ MCELFObjectTargetWriter *createELFObjectTargetWriter() const {
+ return new X86ELFObjectWriter(true, OSType, ELF::EM_386, true);
+ }
};
class WindowsX86AsmBackend : public X86AsmBackend {