[llvm-commits] CVS: llvm/lib/Target/PowerPC/PPCTargetObjInfo.cpp PPCTargetObjInfo.h
Bill Wendling
isanbard at gmail.com
Tue Jan 16 19:46:48 PST 2007
Changes in directory llvm/lib/Target/PowerPC:
PPCTargetObjInfo.cpp added (r1.1)
PPCTargetObjInfo.h added (r1.1)
---
Log message:
New "TargetObjInfo" class. This holds information that the object writers will
use to write things to the file. It's abstract so each target should implement
its own version for each writer type.
---
Diffs of the changes: (+167 -0)
PPCTargetObjInfo.cpp | 22 +++++++
PPCTargetObjInfo.h | 145 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 167 insertions(+)
Index: llvm/lib/Target/PowerPC/PPCTargetObjInfo.cpp
diff -c /dev/null llvm/lib/Target/PowerPC/PPCTargetObjInfo.cpp:1.1
*** /dev/null Tue Jan 16 21:46:40 2007
--- llvm/lib/Target/PowerPC/PPCTargetObjInfo.cpp Tue Jan 16 21:46:30 2007
***************
*** 0 ****
--- 1,22 ----
+ //===-- PPCTargetObjInfo.cpp - Object File Info ----------------------------==//
+ //
+ // The LLVM Compiler Infrastructure
+ //
+ // This file was developed by Bill Wendling and is distributed under the
+ // University of Illinois Open Source License. See LICENSE.TXT for details.
+ //
+ //===----------------------------------------------------------------------===//
+ //
+ // This file defines target object file properties for PowerPC.
+ //
+ //===----------------------------------------------------------------------===//
+
+ #include "PPCTargetObjInfo.h"
+ #include "llvm/Target/TargetData.h"
+ #include "llvm/Target/TargetMachine.h"
+ using namespace llvm;
+
+ MachOTargetObjInfo::MachOTargetObjInfo(const TargetMachine &tm)
+ : TM(tm),
+ is64Bit(TM.getTargetData()->getPointerSizeInBits() == 64),
+ isLittleEndian(TM.getTargetData()->isLittleEndian()) {}
Index: llvm/lib/Target/PowerPC/PPCTargetObjInfo.h
diff -c /dev/null llvm/lib/Target/PowerPC/PPCTargetObjInfo.h:1.1
*** /dev/null Tue Jan 16 21:46:47 2007
--- llvm/lib/Target/PowerPC/PPCTargetObjInfo.h Tue Jan 16 21:46:30 2007
***************
*** 0 ****
--- 1,145 ----
+ //===-- PPCTargetObjInfo.h - Object File Info --------------------*- C++ -*-==//
+ //
+ // The LLVM Compiler Infrastructure
+ //
+ // This file was developed by Bill Wendling and is distributed under the
+ // University of Illinois Open Source License. See LICENSE.TXT for details.
+ //
+ //===----------------------------------------------------------------------===//
+ //
+ // This file defines target object file properties for PowerPC.
+ //
+ //===----------------------------------------------------------------------===//
+
+ #ifndef PPCTARGETOBJINFO_H
+ #define PPCTARGETOBJINFO_H
+
+ #include "llvm/Target/TargetObjInfo.h"
+
+ namespace llvm {
+
+ class TargetMachine;
+
+ struct MachOTargetObjInfo : public TargetObjInfo {
+ MachOTargetObjInfo(const TargetMachine &PPC_TM);
+
+ // align - Emit padding into the file until the current output position is
+ // aligned to the specified power of two boundary.
+ virtual void align(DataBuffer &Output, unsigned Boundary) const {
+ assert(Boundary && (Boundary & (Boundary-1)) == 0 &&
+ "Must align to 2^k boundary");
+ size_t Size = Output.size();
+
+ if (Size & (Boundary-1)) {
+ // Add padding to get alignment to the correct place.
+ size_t Pad = Boundary - (Size & (Boundary - 1));
+ Output.resize(Size + Pad);
+ }
+ }
+
+ //===------------------------------------------------------------------===//
+ // Out Functions - Output the specified value to the data buffer.
+
+ virtual void outbyte(DataBuffer &Output, unsigned char X) const {
+ Output.push_back(X);
+ }
+ virtual void outhalf(DataBuffer &Output, unsigned short X) const {
+ if (isLittleEndian) {
+ Output.push_back(X & 255);
+ Output.push_back(X >> 8);
+ } else {
+ Output.push_back(X >> 8);
+ Output.push_back(X & 255);
+ }
+ }
+ virtual void outword(DataBuffer &Output, unsigned X) const {
+ if (isLittleEndian) {
+ Output.push_back((X >> 0) & 255);
+ Output.push_back((X >> 8) & 255);
+ Output.push_back((X >> 16) & 255);
+ Output.push_back((X >> 24) & 255);
+ } else {
+ Output.push_back((X >> 24) & 255);
+ Output.push_back((X >> 16) & 255);
+ Output.push_back((X >> 8) & 255);
+ Output.push_back((X >> 0) & 255);
+ }
+ }
+ virtual void outxword(DataBuffer &Output, uint64_t X) const {
+ if (isLittleEndian) {
+ Output.push_back(unsigned(X >> 0) & 255);
+ Output.push_back(unsigned(X >> 8) & 255);
+ Output.push_back(unsigned(X >> 16) & 255);
+ Output.push_back(unsigned(X >> 24) & 255);
+ Output.push_back(unsigned(X >> 32) & 255);
+ Output.push_back(unsigned(X >> 40) & 255);
+ Output.push_back(unsigned(X >> 48) & 255);
+ Output.push_back(unsigned(X >> 56) & 255);
+ } else {
+ Output.push_back(unsigned(X >> 56) & 255);
+ Output.push_back(unsigned(X >> 48) & 255);
+ Output.push_back(unsigned(X >> 40) & 255);
+ Output.push_back(unsigned(X >> 32) & 255);
+ Output.push_back(unsigned(X >> 24) & 255);
+ Output.push_back(unsigned(X >> 16) & 255);
+ Output.push_back(unsigned(X >> 8) & 255);
+ Output.push_back(unsigned(X >> 0) & 255);
+ }
+ }
+ virtual void outaddr32(DataBuffer &Output, unsigned X) const {
+ outword(Output, X);
+ }
+ virtual void outaddr64(DataBuffer &Output, uint64_t X) const {
+ outxword(Output, X);
+ }
+ virtual void outaddr(DataBuffer &Output, uint64_t X) const {
+ if (!is64Bit)
+ outword(Output, (unsigned)X);
+ else
+ outxword(Output, X);
+ }
+ virtual void outstring(DataBuffer &Output, std::string &S,
+ unsigned Length) const {
+ unsigned len_to_copy = S.length() < Length ? S.length() : Length;
+ unsigned len_to_fill = S.length() < Length ? Length-S.length() : 0;
+
+ for (unsigned i = 0; i < len_to_copy; ++i)
+ outbyte(Output, S[i]);
+
+ for (unsigned i = 0; i < len_to_fill; ++i)
+ outbyte(Output, 0);
+ }
+
+ //===------------------------------------------------------------------===//
+ // Fix Functions - Replace an existing entry at an offset.
+
+ virtual void fixhalf(DataBuffer &Output, unsigned short X,
+ unsigned Offset) const {
+ unsigned char *P = &Output[Offset];
+ P[0] = (X >> (isLittleEndian ? 0 : 8)) & 255;
+ P[1] = (X >> (isLittleEndian ? 8 : 0)) & 255;
+ }
+ virtual void fixword(DataBuffer &Output, unsigned X,
+ unsigned Offset) const {
+ unsigned char *P = &Output[Offset];
+ P[0] = (X >> (isLittleEndian ? 0 : 24)) & 255;
+ P[1] = (X >> (isLittleEndian ? 8 : 16)) & 255;
+ P[2] = (X >> (isLittleEndian ? 16 : 8)) & 255;
+ P[3] = (X >> (isLittleEndian ? 24 : 0)) & 255;
+ }
+ virtual void fixaddr(DataBuffer &Output, uint64_t X,
+ unsigned Offset) const {
+ // Not implemented
+ }
+ private:
+ /// Target machine description.
+ const TargetMachine &TM;
+
+ /// is64Bit/isLittleEndian - This information is inferred from the target
+ /// machine directly, indicating what header values and flags to set.
+ bool is64Bit, isLittleEndian;
+ };
+
+ } // end llvm namespace
+
+ #endif // PPCTARGETOBJINFO_H
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