[llvm-commits] [llvm] r72785 - in /llvm/trunk/lib/CodeGen: CMakeLists.txt ELFCodeEmitter.cpp ELFCodeEmitter.h ELFWriter.cpp
Bruno Cardoso Lopes
bruno.cardoso at gmail.com
Wed Jun 3 10:47:31 PDT 2009
Author: bruno
Date: Wed Jun 3 12:47:27 2009
New Revision: 72785
URL: http://llvm.org/viewvc/llvm-project?rev=72785&view=rev
Log:
Move ELFCodeEmiter stuff to new files
Added:
llvm/trunk/lib/CodeGen/ELFCodeEmitter.cpp
llvm/trunk/lib/CodeGen/ELFCodeEmitter.h
Modified:
llvm/trunk/lib/CodeGen/CMakeLists.txt
llvm/trunk/lib/CodeGen/ELFWriter.cpp
Modified: llvm/trunk/lib/CodeGen/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/CMakeLists.txt?rev=72785&r1=72784&r2=72785&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/CMakeLists.txt (original)
+++ llvm/trunk/lib/CodeGen/CMakeLists.txt Wed Jun 3 12:47:27 2009
@@ -3,6 +3,7 @@
CodePlacementOpt.cpp
DeadMachineInstructionElim.cpp
DwarfEHPrepare.cpp
+ ELFCodeEmitter.cpp
ELFWriter.cpp
GCMetadata.cpp
GCMetadataPrinter.cpp
Added: llvm/trunk/lib/CodeGen/ELFCodeEmitter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/ELFCodeEmitter.cpp?rev=72785&view=auto
==============================================================================
--- llvm/trunk/lib/CodeGen/ELFCodeEmitter.cpp (added)
+++ llvm/trunk/lib/CodeGen/ELFCodeEmitter.cpp Wed Jun 3 12:47:27 2009
@@ -0,0 +1,94 @@
+//===-- lib/CodeGen/ELFCodeEmitter.cpp ------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ELFCodeEmitter.h"
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Function.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Support/Mangler.h"
+#include "llvm/Support/OutputBuffer.h"
+
+//===----------------------------------------------------------------------===//
+// ELFCodeEmitter Implementation
+//===----------------------------------------------------------------------===//
+
+namespace llvm {
+
+/// startFunction - This callback is invoked when a new machine function is
+/// about to be emitted.
+void ELFCodeEmitter::startFunction(MachineFunction &F) {
+ // Align the output buffer to the appropriate alignment.
+ unsigned Align = 16; // FIXME: GENERICIZE!!
+ // Get the ELF Section that this function belongs in.
+ ES = &EW.getSection(".text", ELFWriter::ELFSection::SHT_PROGBITS,
+ ELFWriter::ELFSection::SHF_EXECINSTR |
+ ELFWriter::ELFSection::SHF_ALLOC);
+ OutBuffer = &ES->SectionData;
+ cerr << "FIXME: This code needs to be updated for changes in the "
+ << "CodeEmitter interfaces. In particular, this should set "
+ << "BufferBegin/BufferEnd/CurBufferPtr, not deal with OutBuffer!";
+ abort();
+
+ // Upgrade the section alignment if required.
+ if (ES->Align < Align) ES->Align = Align;
+
+ // Add padding zeros to the end of the buffer to make sure that the
+ // function will start on the correct byte alignment within the section.
+ OutputBuffer OB(*OutBuffer,
+ TM.getTargetData()->getPointerSizeInBits() == 64,
+ TM.getTargetData()->isLittleEndian());
+ OB.align(Align);
+ FnStart = OutBuffer->size();
+}
+
+/// finishFunction - This callback is invoked after the function is completely
+/// finished.
+bool ELFCodeEmitter::finishFunction(MachineFunction &F) {
+ // We now know the size of the function, add a symbol to represent it.
+ ELFWriter::ELFSym FnSym(F.getFunction());
+
+ // Figure out the binding (linkage) of the symbol.
+ switch (F.getFunction()->getLinkage()) {
+ default:
+ // appending linkage is illegal for functions.
+ assert(0 && "Unknown linkage type!");
+ case GlobalValue::ExternalLinkage:
+ FnSym.SetBind(ELFWriter::ELFSym::STB_GLOBAL);
+ break;
+ case GlobalValue::LinkOnceAnyLinkage:
+ case GlobalValue::LinkOnceODRLinkage:
+ case GlobalValue::WeakAnyLinkage:
+ case GlobalValue::WeakODRLinkage:
+ FnSym.SetBind(ELFWriter::ELFSym::STB_WEAK);
+ break;
+ case GlobalValue::PrivateLinkage:
+ assert (0 && "PrivateLinkage should not be in the symbol table.");
+ case GlobalValue::InternalLinkage:
+ FnSym.SetBind(ELFWriter::ELFSym::STB_LOCAL);
+ break;
+ }
+
+ ES->Size = OutBuffer->size();
+
+ FnSym.SetType(ELFWriter::ELFSym::STT_FUNC);
+ FnSym.SectionIdx = ES->SectionIdx;
+ FnSym.Value = FnStart; // Value = Offset from start of Section.
+ FnSym.Size = OutBuffer->size()-FnStart;
+
+ // Finally, add it to the symtab.
+ EW.SymbolTable.push_back(FnSym);
+ return false;
+}
+
+} // end namespace llvm
Added: llvm/trunk/lib/CodeGen/ELFCodeEmitter.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/ELFCodeEmitter.h?rev=72785&view=auto
==============================================================================
--- llvm/trunk/lib/CodeGen/ELFCodeEmitter.h (added)
+++ llvm/trunk/lib/CodeGen/ELFCodeEmitter.h Wed Jun 3 12:47:27 2009
@@ -0,0 +1,87 @@
+//===-- lib/CodeGen/ELFCodeEmitter.h ----------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ELFCODEEMITTER_H
+#define ELFCODEEMITTER_H
+
+#include "ELFWriter.h"
+#include "llvm/CodeGen/MachineCodeEmitter.h"
+#include <vector>
+
+namespace llvm {
+
+ /// ELFCodeEmitter - This class is used by the ELFWriter to
+ /// emit the code for functions to the ELF file.
+ class ELFCodeEmitter : public MachineCodeEmitter {
+ ELFWriter &EW;
+ TargetMachine &TM;
+ ELFWriter::ELFSection *ES; // Section to write to.
+ std::vector<unsigned char> *OutBuffer;
+ size_t FnStart;
+ public:
+ explicit ELFCodeEmitter(ELFWriter &ew) : EW(ew), TM(EW.TM), OutBuffer(0) {}
+
+ void startFunction(MachineFunction &F);
+ bool finishFunction(MachineFunction &F);
+
+ void addRelocation(const MachineRelocation &MR) {
+ assert(0 && "relo not handled yet!");
+ }
+
+ virtual void StartMachineBasicBlock(MachineBasicBlock *MBB) {
+ }
+
+ virtual uintptr_t getConstantPoolEntryAddress(unsigned Index) const {
+ assert(0 && "CP not implementated yet!");
+ return 0;
+ }
+ virtual uintptr_t getJumpTableEntryAddress(unsigned Index) const {
+ assert(0 && "JT not implementated yet!");
+ return 0;
+ }
+
+ virtual uintptr_t getMachineBasicBlockAddress(MachineBasicBlock *MBB) const {
+ assert(0 && "JT not implementated yet!");
+ return 0;
+ }
+
+ virtual uintptr_t getLabelAddress(uint64_t Label) const {
+ assert(0 && "Label address not implementated yet!");
+ abort();
+ return 0;
+ }
+
+ virtual void emitLabel(uint64_t LabelID) {
+ assert(0 && "emit Label not implementated yet!");
+ abort();
+ }
+
+ virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) { }
+
+ /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE!
+ void startGVStub(const GlobalValue* F, unsigned StubSize,
+ unsigned Alignment = 1) {
+ assert(0 && "JIT specific function called!");
+ abort();
+ }
+ void startGVStub(const GlobalValue* F, void *Buffer, unsigned StubSize) {
+ assert(0 && "JIT specific function called!");
+ abort();
+ }
+ void *finishGVStub(const GlobalValue *F) {
+ assert(0 && "JIT specific function called!");
+ abort();
+ return 0;
+ }
+}; // end class ELFCodeEmitter
+
+} // end namespace llvm
+
+#endif
+
Modified: llvm/trunk/lib/CodeGen/ELFWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/ELFWriter.cpp?rev=72785&r1=72784&r2=72785&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/ELFWriter.cpp (original)
+++ llvm/trunk/lib/CodeGen/ELFWriter.cpp Wed Jun 3 12:47:27 2009
@@ -32,6 +32,7 @@
//===----------------------------------------------------------------------===//
#include "ELFWriter.h"
+#include "ELFCodeEmitter.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/DerivedTypes.h"
@@ -61,149 +62,10 @@
}
//===----------------------------------------------------------------------===//
-// ELFCodeEmitter Implementation
-//===----------------------------------------------------------------------===//
-
-namespace llvm {
- /// ELFCodeEmitter - This class is used by the ELFWriter to emit the code for
- /// functions to the ELF file.
- class ELFCodeEmitter : public MachineCodeEmitter {
- ELFWriter &EW;
- TargetMachine &TM;
- ELFWriter::ELFSection *ES; // Section to write to.
- std::vector<unsigned char> *OutBuffer;
- size_t FnStart;
- public:
- explicit ELFCodeEmitter(ELFWriter &ew) : EW(ew), TM(EW.TM), OutBuffer(0) {}
-
- void startFunction(MachineFunction &F);
- bool finishFunction(MachineFunction &F);
-
- void addRelocation(const MachineRelocation &MR) {
- assert(0 && "relo not handled yet!");
- }
-
- virtual void StartMachineBasicBlock(MachineBasicBlock *MBB) {
- }
-
- virtual uintptr_t getConstantPoolEntryAddress(unsigned Index) const {
- assert(0 && "CP not implementated yet!");
- return 0;
- }
- virtual uintptr_t getJumpTableEntryAddress(unsigned Index) const {
- assert(0 && "JT not implementated yet!");
- return 0;
- }
-
- virtual uintptr_t getMachineBasicBlockAddress(MachineBasicBlock *MBB) const {
- assert(0 && "JT not implementated yet!");
- return 0;
- }
-
- virtual uintptr_t getLabelAddress(uint64_t Label) const {
- assert(0 && "Label address not implementated yet!");
- abort();
- return 0;
- }
-
- virtual void emitLabel(uint64_t LabelID) {
- assert(0 && "emit Label not implementated yet!");
- abort();
- }
-
-
- virtual void setModuleInfo(llvm::MachineModuleInfo* MMI) { }
-
-
- /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE!
- void startGVStub(const GlobalValue* F, unsigned StubSize,
- unsigned Alignment = 1) {
- assert(0 && "JIT specific function called!");
- abort();
- }
- void startGVStub(const GlobalValue* F, void *Buffer, unsigned StubSize) {
- assert(0 && "JIT specific function called!");
- abort();
- }
- void *finishGVStub(const GlobalValue *F) {
- assert(0 && "JIT specific function called!");
- abort();
- return 0;
- }
- };
-}
-
-/// startFunction - This callback is invoked when a new machine function is
-/// about to be emitted.
-void ELFCodeEmitter::startFunction(MachineFunction &F) {
- // Align the output buffer to the appropriate alignment.
- unsigned Align = 16; // FIXME: GENERICIZE!!
- // Get the ELF Section that this function belongs in.
- ES = &EW.getSection(".text", ELFWriter::ELFSection::SHT_PROGBITS,
- ELFWriter::ELFSection::SHF_EXECINSTR |
- ELFWriter::ELFSection::SHF_ALLOC);
- OutBuffer = &ES->SectionData;
- cerr << "FIXME: This code needs to be updated for changes in the "
- << "CodeEmitter interfaces. In particular, this should set "
- << "BufferBegin/BufferEnd/CurBufferPtr, not deal with OutBuffer!";
- abort();
-
- // Upgrade the section alignment if required.
- if (ES->Align < Align) ES->Align = Align;
-
- // Add padding zeros to the end of the buffer to make sure that the
- // function will start on the correct byte alignment within the section.
- OutputBuffer OB(*OutBuffer,
- TM.getTargetData()->getPointerSizeInBits() == 64,
- TM.getTargetData()->isLittleEndian());
- OB.align(Align);
- FnStart = OutBuffer->size();
-}
-
-/// finishFunction - This callback is invoked after the function is completely
-/// finished.
-bool ELFCodeEmitter::finishFunction(MachineFunction &F) {
- // We now know the size of the function, add a symbol to represent it.
- ELFWriter::ELFSym FnSym(F.getFunction());
-
- // Figure out the binding (linkage) of the symbol.
- switch (F.getFunction()->getLinkage()) {
- default:
- // appending linkage is illegal for functions.
- assert(0 && "Unknown linkage type!");
- case GlobalValue::ExternalLinkage:
- FnSym.SetBind(ELFWriter::ELFSym::STB_GLOBAL);
- break;
- case GlobalValue::LinkOnceAnyLinkage:
- case GlobalValue::LinkOnceODRLinkage:
- case GlobalValue::WeakAnyLinkage:
- case GlobalValue::WeakODRLinkage:
- FnSym.SetBind(ELFWriter::ELFSym::STB_WEAK);
- break;
- case GlobalValue::PrivateLinkage:
- assert (0 && "PrivateLinkage should not be in the symbol table.");
- case GlobalValue::InternalLinkage:
- FnSym.SetBind(ELFWriter::ELFSym::STB_LOCAL);
- break;
- }
-
- ES->Size = OutBuffer->size();
-
- FnSym.SetType(ELFWriter::ELFSym::STT_FUNC);
- FnSym.SectionIdx = ES->SectionIdx;
- FnSym.Value = FnStart; // Value = Offset from start of Section.
- FnSym.Size = OutBuffer->size()-FnStart;
-
- // Finally, add it to the symtab.
- EW.SymbolTable.push_back(FnSym);
- return false;
-}
-
-//===----------------------------------------------------------------------===//
// ELFWriter Implementation
//===----------------------------------------------------------------------===//
-ELFWriter::ELFWriter(raw_ostream &o, TargetMachine &tm)
+ELFWriter::ELFWriter(raw_ostream &o, TargetMachine &tm)
: MachineFunctionPass(&ID), O(o), TM(tm) {
e_flags = 0; // e_flags defaults to 0, no flags.
More information about the llvm-commits
mailing list