[lld] r175997 - [ELF][Hexagon] add _SDA_BASE_(absolute symbol pointing to start of quickdata)
Shankar Easwaran
shankare at codeaurora.org
Sun Feb 24 08:02:24 PST 2013
Author: shankare
Date: Sun Feb 24 10:02:24 2013
New Revision: 175997
URL: http://llvm.org/viewvc/llvm-project?rev=175997&view=rev
Log:
[ELF][Hexagon] add _SDA_BASE_(absolute symbol pointing to start of quickdata)
Added:
lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonExecutableAtoms.h
lld/trunk/test/elf/Hexagon/
lld/trunk/test/elf/Hexagon/Inputs/
lld/trunk/test/elf/Hexagon/Inputs/sda-base.o (with props)
lld/trunk/test/elf/Hexagon/sda-base.test
Modified:
lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonSectionChunks.h
lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.cpp
lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.h
lld/trunk/lib/ReaderWriter/ELF/Writer.cpp
Added: lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonExecutableAtoms.h
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonExecutableAtoms.h?rev=175997&view=auto
==============================================================================
--- lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonExecutableAtoms.h (added)
+++ lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonExecutableAtoms.h Sun Feb 24 10:02:24 2013
@@ -0,0 +1,31 @@
+//===- lib/ReaderWriter/ELF/Hexagon/HexagonExecutableAtoms.h --------------===//
+//
+// The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLD_READER_WRITER_ELF_HEXAGON_EXECUTABLE_ATOM_H
+#define LLD_READER_WRITER_ELF_HEXAGON_EXECUTABLE_ATOM_H
+
+#include "ExecutableAtoms.h"
+
+namespace lld {
+namespace elf {
+typedef llvm::object::ELFType<llvm::support::little, 4, false> HexagonELFType;
+class HexagonTargetInfo;
+
+template <class HexagonELFType> class HexagonRuntimeFile
+ : public CRuntimeFile<HexagonELFType> {
+public:
+ HexagonRuntimeFile(const HexagonTargetInfo &hti)
+ :CRuntimeFile<HexagonELFType>(hti, "Hexagon runtime file")
+ {}
+
+};
+} // elf
+} // lld
+
+#endif // LLD_READER_WRITER_ELF_HEXAGON_EXECUTABLE_ATOM_H
Modified: lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonSectionChunks.h
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonSectionChunks.h?rev=175997&r1=175996&r2=175997&view=diff
==============================================================================
--- lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonSectionChunks.h (original)
+++ lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonSectionChunks.h Sun Feb 24 10:02:24 2013
@@ -25,6 +25,7 @@ public:
HexagonTargetLayout<HexagonELFType>::ORDER_SDATA) {
this->_type = SHT_PROGBITS;
this->_flags = SHF_ALLOC | SHF_WRITE;
+ this->_align2 = 4096;
}
/// \brief Finalize the section contents before writing
Modified: lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.cpp?rev=175997&r1=175996&r2=175997&view=diff
==============================================================================
--- lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.cpp (original)
+++ lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.cpp Sun Feb 24 10:02:24 2013
@@ -17,5 +17,5 @@ using namespace llvm::ELF;
HexagonTargetHandler::HexagonTargetHandler(HexagonTargetInfo &targetInfo)
: DefaultTargetHandler(targetInfo), _relocationHandler(targetInfo),
- _targetLayout(targetInfo) {
+ _targetLayout(targetInfo), _hexagonRuntimeFile(targetInfo) {
}
Modified: lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.h
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.h?rev=175997&r1=175996&r2=175997&view=diff
==============================================================================
--- lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.h (original)
+++ lld/trunk/lib/ReaderWriter/ELF/Hexagon/HexagonTargetHandler.h Sun Feb 24 10:02:24 2013
@@ -11,7 +11,7 @@
#define LLD_READER_WRITER_ELF_HEXAGON_TARGET_HANDLER_H
#include "DefaultTargetHandler.h"
-#include "ExecutableAtoms.h"
+#include "HexagonExecutableAtoms.h"
#include "HexagonRelocationHandler.h"
#include "HexagonSectionChunks.h"
#include "TargetLayout.h"
@@ -132,6 +132,10 @@ public:
return DefaultLayout<HexagonELFType>::getSegmentType(section);
}
+ Section<HexagonELFType> *getSDataSection() const {
+ return _sdataSection;
+ }
+
private:
llvm::BumpPtrAllocator _alloc;
SDataSection<HexagonELFType> *_sdataSection;
@@ -155,10 +159,26 @@ public:
return _relocationHandler;
}
+ void addDefaultAtoms() {
+ _hexagonRuntimeFile.addAbsoluteAtom("_SDA_BASE_");
+ }
+
+ virtual void addFiles(InputFiles &inputFiles) {
+ addDefaultAtoms();
+ inputFiles.prependFile(_hexagonRuntimeFile);
+ }
+
+ void finalizeSymbolValues() {
+ auto sdabaseAtomIter = _targetLayout.findAbsoluteAtom("_SDA_BASE_");
+ (*sdabaseAtomIter)->_virtualAddr =
+ _targetLayout.getSDataSection()->virtualAddr();
+ }
+
private:
HexagonTargetRelocationHandler _relocationHandler;
HexagonTargetLayout<HexagonELFType> _targetLayout;
HexagonTargetAtomHandler<HexagonELFType> _targetAtomHandler;
+ HexagonRuntimeFile<HexagonELFType> _hexagonRuntimeFile;
};
} // end namespace elf
} // end namespace lld
Modified: lld/trunk/lib/ReaderWriter/ELF/Writer.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/ELF/Writer.cpp?rev=175997&r1=175996&r2=175997&view=diff
==============================================================================
--- lld/trunk/lib/ReaderWriter/ELF/Writer.cpp (original)
+++ lld/trunk/lib/ReaderWriter/ELF/Writer.cpp Sun Feb 24 10:02:24 2013
@@ -229,6 +229,9 @@ void ExecutableWriter<ELFT>::finalizeDef
(*bssEndAtomIter)->_virtualAddr = (*phe)->p_vaddr + (*phe)->p_memsz;
(*underScoreEndAtomIter)->_virtualAddr = (*phe)->p_vaddr + (*phe)->p_memsz;
(*endAtomIter)->_virtualAddr = (*phe)->p_vaddr + (*phe)->p_memsz;
+
+ // Give a chance for the target to finalize its atom values
+ _targetHandler.finalizeSymbolValues();
}
template <class ELFT>
Added: lld/trunk/test/elf/Hexagon/Inputs/sda-base.o
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/elf/Hexagon/Inputs/sda-base.o?rev=175997&view=auto
==============================================================================
Binary file - no diff available.
Propchange: lld/trunk/test/elf/Hexagon/Inputs/sda-base.o
------------------------------------------------------------------------------
svn:mime-type = application/octet-stream
Added: lld/trunk/test/elf/Hexagon/sda-base.test
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/elf/Hexagon/sda-base.test?rev=175997&view=auto
==============================================================================
--- lld/trunk/test/elf/Hexagon/sda-base.test (added)
+++ lld/trunk/test/elf/Hexagon/sda-base.test Sun Feb 24 10:02:24 2013
@@ -0,0 +1,4 @@
+RUN: lld-core -arch hexagon -reader ELF %p/Inputs/sda-base.o -writer ELF -o %t1
+RUN: llvm-nm -n %t1 | FileCheck %s -check-prefix=sdabase
+
+sdabase: 00002000 A _SDA_BASE_
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