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Revert patch.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33298 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2007-01-17 09:06:13 +00:00
parent 44d59b0daf
commit e911615c47
16 changed files with 338 additions and 603 deletions
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101
include/llvm/CodeGen/ELFWriter.h
View File

@ -22,7 +22,6 @@ namespace llvm {
class Mangler;
class MachineCodeEmitter;
class ELFCodeEmitter;
class TargetObjInfo;
/// ELFWriter - This class implements the common target-independent code for
/// writing ELF files. Targets should derive a class from this to
@ -50,10 +49,6 @@ namespace llvm {
///
TargetMachine &TM;
/// Target object writer info.
///
const TargetObjInfo *TOI;
/// Mang - The object used to perform name mangling for this module.
///
Mangler *Mang;
@ -219,6 +214,102 @@ namespace llvm {
unsigned ELFHeader_e_shoff_Offset; // e_shoff in ELF header.
unsigned ELFHeader_e_shstrndx_Offset; // e_shstrndx in ELF header.
unsigned ELFHeader_e_shnum_Offset; // e_shnum in ELF header.
// align - Emit padding into the file until the current output position is
// aligned to the specified power of two boundary.
static void align(DataBuffer &Output, unsigned Boundary) {
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);
}
}
static void outbyte(DataBuffer &Output, unsigned char X) {
Output.push_back(X);
}
void outhalf(DataBuffer &Output, unsigned short X) {
if (isLittleEndian) {
Output.push_back(X&255);
Output.push_back(X >> 8);
} else {
Output.push_back(X >> 8);
Output.push_back(X&255);
}
}
void outword(DataBuffer &Output, unsigned X) {
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);
}
}
void outxword(DataBuffer &Output, uint64_t X) {
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);
}
}
void outaddr32(DataBuffer &Output, unsigned X) {
outword(Output, X);
}
void outaddr64(DataBuffer &Output, uint64_t X) {
outxword(Output, X);
}
void outaddr(DataBuffer &Output, uint64_t X) {
if (!is64Bit)
outword(Output, (unsigned)X);
else
outxword(Output, X);
}
// fix functions - Replace an existing entry at an offset.
void fixhalf(DataBuffer &Output, unsigned short X, unsigned Offset) {
unsigned char *P = &Output[Offset];
P[0] = (X >> (isLittleEndian ? 0 : 8)) & 255;
P[1] = (X >> (isLittleEndian ? 8 : 0)) & 255;
}
void fixword(DataBuffer &Output, unsigned X, unsigned Offset) {
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;
}
void fixaddr(DataBuffer &Output, uint64_t X, unsigned Offset) {
if (!is64Bit)
fixword(Output, (unsigned)X, Offset);
else
assert(0 && "Emission of 64-bit data not implemented yet!");
}
private:
void EmitGlobal(GlobalVariable *GV);

100
include/llvm/CodeGen/MachOWriter.h
View File

@ -25,7 +25,6 @@ namespace llvm {
class Mangler;
class MachineCodeEmitter;
class MachOCodeEmitter;
class TargetObjInfo;
/// MachOSym - This struct contains information about each symbol that is
/// added to logical symbol table for the module. This is eventually
@ -101,10 +100,6 @@ namespace llvm {
///
TargetMachine &TM;
/// Target object writer info.
///
const TargetObjInfo *TOI;
/// Mang - The object used to perform name mangling for this module.
///
Mangler *Mang;
@ -664,6 +659,101 @@ namespace llvm {
/// SymbolTable to aid in emitting the DYSYMTAB load command.
std::vector<unsigned> DynamicSymbolTable;
// align - Emit padding into the file until the current output position is
// aligned to the specified power of two boundary.
static void align(DataBuffer &Output, unsigned Boundary) {
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);
}
}
void outbyte(DataBuffer &Output, unsigned char X) {
Output.push_back(X);
}
void outhalf(DataBuffer &Output, unsigned short X) {
if (isLittleEndian) {
Output.push_back(X&255);
Output.push_back(X >> 8);
} else {
Output.push_back(X >> 8);
Output.push_back(X&255);
}
}
void outword(DataBuffer &Output, unsigned X) {
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);
}
}
void outxword(DataBuffer &Output, uint64_t X) {
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);
}
}
void outaddr32(DataBuffer &Output, unsigned X) {
outword(Output, X);
}
void outaddr64(DataBuffer &Output, uint64_t X) {
outxword(Output, X);
}
void outaddr(DataBuffer &Output, uint64_t X) {
if (!is64Bit)
outword(Output, (unsigned)X);
else
outxword(Output, X);
}
void outstring(DataBuffer &Output, std::string &S, unsigned Length) {
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);
}
void fixhalf(DataBuffer &Output, unsigned short X, unsigned Offset) {
unsigned char *P = &Output[Offset];
P[0] = (X >> (isLittleEndian ? 0 : 8)) & 255;
P[1] = (X >> (isLittleEndian ? 8 : 0)) & 255;
}
void fixword(DataBuffer &Output, unsigned X, unsigned Offset) {
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;
}
static void InitMem(const Constant *C, void *Addr, intptr_t Offset,
const TargetData *TD,
std::vector<MachineRelocation> &MRs);

21
include/llvm/Target/TargetMachine.h
View File

@ -21,7 +21,6 @@
namespace llvm {
class TargetAsmInfo;
class TargetObjInfo;
class TargetData;
class TargetSubtarget;
class TargetInstrInfo;
@ -67,7 +66,7 @@ class TargetMachine {
TargetMachine(const TargetMachine &); // DO NOT IMPLEMENT
void operator=(const TargetMachine &); // DO NOT IMPLEMENT
protected: // Can only create subclasses.
TargetMachine() : AsmInfo(NULL), ObjInfo(NULL) { }
TargetMachine() : AsmInfo(NULL) { }
/// getSubtargetImpl - virtual method implemented by subclasses that returns
/// a reference to that target's TargetSubtarget-derived member variable.
@ -76,19 +75,11 @@ protected: // Can only create subclasses.
/// AsmInfo - Contains target specific asm information.
///
mutable const TargetAsmInfo *AsmInfo;
/// createTargetAsmInfo - Create a new instance of target specific asm
/// information.
virtual const TargetAsmInfo *createTargetAsmInfo() const { return NULL; }
/// ObjInfo - Contains target specific object file information.
///
mutable const TargetObjInfo *ObjInfo;
/// createTargetObjInfo - Create a new instance of target specific object
/// information.
virtual const TargetObjInfo *createTargetObjInfo() const { return NULL; }
public:
virtual ~TargetMachine();
@ -116,6 +107,7 @@ public:
virtual TargetLowering *getTargetLowering() const { return 0; }
virtual const TargetData *getTargetData() const { return 0; }
/// getTargetAsmInfo - Return target specific asm information.
///
const TargetAsmInfo *getTargetAsmInfo() const {
@ -123,13 +115,6 @@ public:
return AsmInfo;
}
/// getTargetObjInfo - Return target specific object information.
///
const TargetObjInfo *getTargetObjInfo() const {
if (!ObjInfo) ObjInfo = createTargetObjInfo();
return ObjInfo;
}
/// getSubtarget - This method returns a pointer to the specified type of
/// TargetSubtarget. In debug builds, it verifies that the object being
/// returned is of the correct type.

57
include/llvm/Target/TargetObjInfo.h
View File

@ -1,57 +0,0 @@
//===-- llvm/Target/TargetObjInfo.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 contains a class to be used as the basis for target specific object
// writers.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_OBJ_INFO_H
#define LLVM_TARGET_OBJ_INFO_H
#include <string>
#include <vector>
namespace llvm {
struct TargetObjInfo {
TargetObjInfo() {}
virtual ~TargetObjInfo() {}
typedef std::vector<unsigned char> DataBuffer;
virtual void align(DataBuffer &Output, unsigned Boundary) const = 0;
//===------------------------------------------------------------------===//
// Out Functions - Output the specified value to the data buffer.
virtual void outbyte(DataBuffer &Output, unsigned char X) const = 0;
virtual void outhalf(DataBuffer &Output, unsigned short X) const = 0;
virtual void outword(DataBuffer &Output, unsigned X) const = 0;
virtual void outxword(DataBuffer &Output, uint64_t X) const = 0;
virtual void outaddr32(DataBuffer &Output, unsigned X) const = 0;
virtual void outaddr64(DataBuffer &Output, uint64_t X) const = 0;
virtual void outaddr(DataBuffer &Output, uint64_t X) const = 0;
virtual void outstring(DataBuffer &Output, std::string &S,
unsigned Length) const = 0;
//===------------------------------------------------------------------===//
// Fix Functions - Replace an existing entry at an offset.
virtual void fixhalf(DataBuffer &Output, unsigned short X,
unsigned Offset) const = 0;
virtual void fixword(DataBuffer &Output, unsigned X,
unsigned Offset) const = 0;
virtual void fixaddr(DataBuffer &Output, uint64_t X,
unsigned Offset) const = 0;
};
} // end llvm namespace
#endif // LLVM_TARGET_OBJ_INFO_H

116
lib/CodeGen/ELFWriter.cpp
View File

@ -37,7 +37,6 @@
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetObjInfo.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Support/Streams.h"
using namespace llvm;
@ -54,20 +53,8 @@ namespace llvm {
ELFWriter::ELFSection *ES; // Section to write to.
std::vector<unsigned char> *OutBuffer;
size_t FnStart;
/// Target machine description.
///
TargetMachine &TM;
/// Target object writer info.
///
const TargetObjInfo *TOI;
public:
ELFCodeEmitter(ELFWriter &ew, TargetMachine &tm)
: EW(ew), OutBuffer(0), TM(tm) {
// Create the target object info object for this target.
TOI = TM.getTargetObjInfo();
}
ELFCodeEmitter(ELFWriter &ew) : EW(ew), OutBuffer(0) {}
void startFunction(MachineFunction &F);
bool finishFunction(MachineFunction &F);
@ -126,7 +113,7 @@ void ELFCodeEmitter::startFunction(MachineFunction &F) {
// 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.
TOI->align(*OutBuffer, Align);
ELFWriter::align(*OutBuffer, Align);
FnStart = OutBuffer->size();
}
@ -178,11 +165,8 @@ ELFWriter::ELFWriter(std::ostream &o, TargetMachine &tm) : O(o), TM(tm) {
isLittleEndian = TM.getTargetData()->isLittleEndian();
// Create the machine code emitter object for this target.
MCE = new ELFCodeEmitter(*this, TM);
MCE = new ELFCodeEmitter(*this);
NumSections = 0;
// Create the target object info object for this target.
TOI = TM.getTargetObjInfo();
}
ELFWriter::~ELFWriter() {
@ -197,36 +181,36 @@ bool ELFWriter::doInitialization(Module &M) {
// Local alias to shortenify coming code.
std::vector<unsigned char> &FH = FileHeader;
TOI->outbyte(FH, 0x7F); // EI_MAG0
TOI->outbyte(FH, 'E'); // EI_MAG1
TOI->outbyte(FH, 'L'); // EI_MAG2
TOI->outbyte(FH, 'F'); // EI_MAG3
TOI->outbyte(FH, is64Bit ? 2 : 1); // EI_CLASS
TOI->outbyte(FH, isLittleEndian ? 1 : 2); // EI_DATA
TOI->outbyte(FH, 1); // EI_VERSION
FH.resize(16); // EI_PAD up to 16 bytes.
outbyte(FH, 0x7F); // EI_MAG0
outbyte(FH, 'E'); // EI_MAG1
outbyte(FH, 'L'); // EI_MAG2
outbyte(FH, 'F'); // EI_MAG3
outbyte(FH, is64Bit ? 2 : 1); // EI_CLASS
outbyte(FH, isLittleEndian ? 1 : 2); // EI_DATA
outbyte(FH, 1); // EI_VERSION
FH.resize(16); // EI_PAD up to 16 bytes.
// This should change for shared objects.
TOI->outhalf(FH, 1); // e_type = ET_REL
TOI->outhalf(FH, e_machine); // e_machine = whatever the target wants
TOI->outword(FH, 1); // e_version = 1
TOI->outaddr(FH, 0); // e_entry = 0 -> no entry point in .o file
TOI->outaddr(FH, 0); // e_phoff = 0 -> no program header for .o
outhalf(FH, 1); // e_type = ET_REL
outhalf(FH, e_machine); // e_machine = whatever the target wants
outword(FH, 1); // e_version = 1
outaddr(FH, 0); // e_entry = 0 -> no entry point in .o file
outaddr(FH, 0); // e_phoff = 0 -> no program header for .o
ELFHeader_e_shoff_Offset = FH.size();
TOI->outaddr(FH, 0); // e_shoff
TOI->outword(FH, e_flags); // e_flags = whatever the target wants
outaddr(FH, 0); // e_shoff
outword(FH, e_flags); // e_flags = whatever the target wants
TOI->outhalf(FH, is64Bit ? 64 : 52); // e_ehsize = ELF header size
TOI->outhalf(FH, 0); // e_phentsize = prog header entry size
TOI->outhalf(FH, 0); // e_phnum = # prog header entries=0
TOI->outhalf(FH, is64Bit ? 64 : 40); // e_shentsize = sect hdr entry size
outhalf(FH, is64Bit ? 64 : 52); // e_ehsize = ELF header size
outhalf(FH, 0); // e_phentsize = prog header entry size
outhalf(FH, 0); // e_phnum = # prog header entries = 0
outhalf(FH, is64Bit ? 64 : 40); // e_shentsize = sect hdr entry size
ELFHeader_e_shnum_Offset = FH.size();
TOI->outhalf(FH, 0); // e_shnum = # of section header ents
outhalf(FH, 0); // e_shnum = # of section header ents
ELFHeader_e_shstrndx_Offset = FH.size();
TOI->outhalf(FH, 0); // e_shstrndx = Section # of '.shstrtab'
outhalf(FH, 0); // e_shstrndx = Section # of '.shstrtab'
// Add the null section, which is required to be first in the file.
getSection("", 0, 0);
@ -368,7 +352,7 @@ void ELFWriter::EmitSymbolTable() {
DataBuffer &StrTabBuf = StrTab.SectionData;
// Set the zero'th symbol to a null byte, as required.
TOI->outbyte(StrTabBuf, 0);
outbyte(StrTabBuf, 0);
SymbolTable[0].NameIdx = 0;
unsigned Index = 1;
for (unsigned i = 1, e = SymbolTable.size(); i != e; ++i) {
@ -405,22 +389,22 @@ void ELFWriter::EmitSymbolTable() {
if (!is64Bit) { // 32-bit and 64-bit formats are shuffled a bit.
for (unsigned i = 0, e = SymbolTable.size(); i != e; ++i) {
ELFSym &Sym = SymbolTable[i];
TOI->outword(SymTabBuf, Sym.NameIdx);
TOI->outaddr32(SymTabBuf, Sym.Value);
TOI->outword(SymTabBuf, Sym.Size);
TOI->outbyte(SymTabBuf, Sym.Info);
TOI->outbyte(SymTabBuf, Sym.Other);
TOI->outhalf(SymTabBuf, Sym.SectionIdx);
outword(SymTabBuf, Sym.NameIdx);
outaddr32(SymTabBuf, Sym.Value);
outword(SymTabBuf, Sym.Size);
outbyte(SymTabBuf, Sym.Info);
outbyte(SymTabBuf, Sym.Other);
outhalf(SymTabBuf, Sym.SectionIdx);
}
} else {
for (unsigned i = 0, e = SymbolTable.size(); i != e; ++i) {
ELFSym &Sym = SymbolTable[i];
TOI->outword(SymTabBuf, Sym.NameIdx);
TOI->outbyte(SymTabBuf, Sym.Info);
TOI->outbyte(SymTabBuf, Sym.Other);
TOI->outhalf(SymTabBuf, Sym.SectionIdx);
TOI->outaddr64(SymTabBuf, Sym.Value);
TOI->outxword(SymTabBuf, Sym.Size);
outword(SymTabBuf, Sym.NameIdx);
outbyte(SymTabBuf, Sym.Info);
outbyte(SymTabBuf, Sym.Other);
outhalf(SymTabBuf, Sym.SectionIdx);
outaddr64(SymTabBuf, Sym.Value);
outxword(SymTabBuf, Sym.Size);
}
}
@ -436,7 +420,7 @@ void ELFWriter::EmitSectionTableStringTable() {
// Now that we know which section number is the .shstrtab section, update the
// e_shstrndx entry in the ELF header.
TOI->fixhalf(FileHeader, SHStrTab.SectionIdx, ELFHeader_e_shstrndx_Offset);
fixhalf(FileHeader, SHStrTab.SectionIdx, ELFHeader_e_shstrndx_Offset);
// Set the NameIdx of each section in the string table and emit the bytes for
// the string table.
@ -487,11 +471,11 @@ void ELFWriter::OutputSectionsAndSectionTable() {
// Now that we know where all of the sections will be emitted, set the e_shnum
// entry in the ELF header.
TOI->fixhalf(FileHeader, NumSections, ELFHeader_e_shnum_Offset);
fixhalf(FileHeader, NumSections, ELFHeader_e_shnum_Offset);
// Now that we know the offset in the file of the section table, update the
// e_shoff address in the ELF header.
TOI->fixaddr(FileHeader, FileOff, ELFHeader_e_shoff_Offset);
fixaddr(FileHeader, FileOff, ELFHeader_e_shoff_Offset);
// Now that we know all of the data in the file header, emit it and all of the
// sections!
@ -513,16 +497,16 @@ void ELFWriter::OutputSectionsAndSectionTable() {
O.write((char*)&S.SectionData[0], S.SectionData.size());
FileOff += S.SectionData.size();
TOI->outword(Table, S.NameIdx); // sh_name - Symbol table name idx
TOI->outword(Table, S.Type); // sh_type - Section contents & semantics
TOI->outword(Table, S.Flags); // sh_flags - Section flags
TOI->outaddr(Table, S.Addr); // sh_addr - The mem addr this section is in
TOI->outaddr(Table, S.Offset); // sh_offset - Offset from the file start
TOI->outword(Table, S.Size); // sh_size - The section size
TOI->outword(Table, S.Link); // sh_link - Section header table index link
TOI->outword(Table, S.Info); // sh_info - Auxillary information
TOI->outword(Table, S.Align); // sh_addralign - Alignment of section
TOI->outword(Table, S.EntSize); // sh_entsize - Size of entries in the sect
outword(Table, S.NameIdx); // sh_name - Symbol table name idx
outword(Table, S.Type); // sh_type - Section contents & semantics
outword(Table, S.Flags); // sh_flags - Section flags.
outaddr(Table, S.Addr); // sh_addr - The mem addr this section is in.
outaddr(Table, S.Offset); // sh_offset - Offset from the file start.
outword(Table, S.Size); // sh_size - The section size.
outword(Table, S.Link); // sh_link - Section header table index link.
outword(Table, S.Info); // sh_info - Auxillary information.
outword(Table, S.Align); // sh_addralign - Alignment of section.
outword(Table, S.EntSize); // sh_entsize - Size of entries in the section.
SectionList.pop_front();
}

166
lib/CodeGen/MachOWriter.cpp
View File

@ -32,11 +32,11 @@
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetJITInfo.h"
#include "llvm/Target/TargetObjInfo.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Streams.h"
#include <algorithm>
using namespace llvm;
//===----------------------------------------------------------------------===//
@ -49,14 +49,6 @@ namespace llvm {
class MachOCodeEmitter : public MachineCodeEmitter {
MachOWriter &MOW;
/// Target machine description.
///
TargetMachine &TM;
/// Target object writer info.
///
const TargetObjInfo *TOI;
/// Relocations - These are the relocations that the function needs, as
/// emitted.
std::vector<MachineRelocation> Relocations;
@ -79,10 +71,7 @@ namespace llvm {
std::vector<intptr_t> MBBLocations;
public:
MachOCodeEmitter(MachOWriter &mow, TargetMachine &tm) : MOW(mow), TM(tm) {
// Create the target object info object for this target.
TOI = TM.getTargetObjInfo();
}
MachOCodeEmitter(MachOWriter &mow) : MOW(mow) {}
virtual void startFunction(MachineFunction &F);
virtual bool finishFunction(MachineFunction &F);
@ -174,7 +163,7 @@ bool MachOCodeEmitter::finishFunction(MachineFunction &F) {
// Get a symbol for the function to add to the symbol table
const GlobalValue *FuncV = F.getFunction();
MachOSym FnSym(FuncV, MOW.Mang->getValueName(FuncV), MOS->Index, TM);
MachOSym FnSym(FuncV, MOW.Mang->getValueName(FuncV), MOS->Index, MOW.TM);
// Emit constant pool to appropriate section(s)
emitConstantPool(F.getConstantPool());
@ -222,7 +211,7 @@ void MachOCodeEmitter::emitConstantPool(MachineConstantPool *MCP) {
if (CP.empty()) return;
// FIXME: handle PIC codegen
bool isPIC = TM.getRelocationModel() == Reloc::PIC_;
bool isPIC = MOW.TM.getRelocationModel() == Reloc::PIC_;
assert(!isPIC && "PIC codegen not yet handled for mach-o jump tables!");
// Although there is no strict necessity that I am aware of, we will do what
@ -234,7 +223,7 @@ void MachOCodeEmitter::emitConstantPool(MachineConstantPool *MCP) {
// "giant object for PIC" optimization.
for (unsigned i = 0, e = CP.size(); i != e; ++i) {
const Type *Ty = CP[i].getType();
unsigned Size = TM.getTargetData()->getTypeSize(Ty);
unsigned Size = MOW.TM.getTargetData()->getTypeSize(Ty);
MachOWriter::MachOSection *Sec = MOW.getConstSection(Ty);
CPLocations.push_back(Sec->SectionData.size());
@ -247,10 +236,10 @@ void MachOCodeEmitter::emitConstantPool(MachineConstantPool *MCP) {
// FIXME: need alignment?
// FIXME: share between here and AddSymbolToSection?
for (unsigned j = 0; j < Size; ++j)
TOI->outbyte(Sec->SectionData, 0);
MOW.outbyte(Sec->SectionData, 0);
MOW.InitMem(CP[i].Val.ConstVal, &Sec->SectionData[0], CPLocations[i],
TM.getTargetData(), Sec->Relocations);
MOW.TM.getTargetData(), Sec->Relocations);
}
}
@ -261,7 +250,7 @@ void MachOCodeEmitter::emitJumpTables(MachineJumpTableInfo *MJTI) {
if (JT.empty()) return;
// FIXME: handle PIC codegen
bool isPIC = TM.getRelocationModel() == Reloc::PIC_;
bool isPIC = MOW.TM.getRelocationModel() == Reloc::PIC_;
assert(!isPIC && "PIC codegen not yet handled for mach-o jump tables!");
MachOWriter::MachOSection *Sec = MOW.getJumpTableSection();
@ -278,7 +267,7 @@ void MachOCodeEmitter::emitJumpTables(MachineJumpTableInfo *MJTI) {
MR.setResultPointer((void *)JTLocations[i]);
MR.setConstantVal(TextSecIndex);
Sec->Relocations.push_back(MR);
TOI->outaddr(Sec->SectionData, 0);
MOW.outaddr(Sec->SectionData, 0);
}
}
// FIXME: remove when we have unified size + output buffer
@ -294,10 +283,7 @@ MachOWriter::MachOWriter(std::ostream &o, TargetMachine &tm) : O(o), TM(tm) {
isLittleEndian = TM.getTargetData()->isLittleEndian();
// Create the machine code emitter object for this target.
MCE = new MachOCodeEmitter(*this, tm);
// Create the target object info object for this target.
TOI = TM.getTargetObjInfo();
MCE = new MachOCodeEmitter(*this);
}
MachOWriter::~MachOWriter() {
@ -326,7 +312,7 @@ void MachOWriter::AddSymbolToSection(MachOSection *Sec, GlobalVariable *GV) {
// FIXME: remove when we have unified size + output buffer
unsigned AlignedSize = Sec->size - OrigSize;
for (unsigned i = 0; i < AlignedSize; ++i)
TOI->outbyte(Sec->SectionData, 0);
outbyte(Sec->SectionData, 0);
}
// Record the offset of the symbol, and then allocate space for it.
// FIXME: remove when we have unified size + output buffer
@ -343,7 +329,7 @@ void MachOWriter::AddSymbolToSection(MachOSection *Sec, GlobalVariable *GV) {
// Allocate space in the section for the global.
for (unsigned i = 0; i < Size; ++i)
TOI->outbyte(Sec->SectionData, 0);
outbyte(Sec->SectionData, 0);
}
void MachOWriter::EmitGlobal(GlobalVariable *GV) {
@ -456,15 +442,15 @@ void MachOWriter::EmitHeaderAndLoadCommands() {
// Step #3: write the header to the file
// Local alias to shortenify coming code.
DataBuffer &FH = Header.HeaderData;
TOI->outword(FH, Header.magic);
TOI->outword(FH, Header.cputype);
TOI->outword(FH, Header.cpusubtype);
TOI->outword(FH, Header.filetype);
TOI->outword(FH, Header.ncmds);
TOI->outword(FH, Header.sizeofcmds);
TOI->outword(FH, Header.flags);
outword(FH, Header.magic);
outword(FH, Header.cputype);
outword(FH, Header.cpusubtype);
outword(FH, Header.filetype);
outword(FH, Header.ncmds);
outword(FH, Header.sizeofcmds);
outword(FH, Header.flags);
if (is64Bit)
TOI->outword(FH, Header.reserved);
outword(FH, Header.reserved);
// Step #4: Finish filling in the segment load command and write it out
for (std::vector<MachOSection*>::iterator I = SectionList.begin(),
@ -474,17 +460,17 @@ void MachOWriter::EmitHeaderAndLoadCommands() {
SEG.vmsize = SEG.filesize;
SEG.fileoff = Header.cmdSize(is64Bit) + Header.sizeofcmds;
TOI->outword(FH, SEG.cmd);
TOI->outword(FH, SEG.cmdsize);
TOI->outstring(FH, SEG.segname, 16);
TOI->outaddr(FH, SEG.vmaddr);
TOI->outaddr(FH, SEG.vmsize);
TOI->outaddr(FH, SEG.fileoff);
TOI->outaddr(FH, SEG.filesize);
TOI->outword(FH, SEG.maxprot);
TOI->outword(FH, SEG.initprot);
TOI->outword(FH, SEG.nsects);
TOI->outword(FH, SEG.flags);
outword(FH, SEG.cmd);
outword(FH, SEG.cmdsize);
outstring(FH, SEG.segname, 16);
outaddr(FH, SEG.vmaddr);
outaddr(FH, SEG.vmsize);
outaddr(FH, SEG.fileoff);
outaddr(FH, SEG.filesize);
outword(FH, SEG.maxprot);
outword(FH, SEG.initprot);
outword(FH, SEG.nsects);
outword(FH, SEG.flags);
// Step #5: Finish filling in the fields of the MachOSections
uint64_t currentAddr = 0;
@ -511,19 +497,19 @@ void MachOWriter::EmitHeaderAndLoadCommands() {
currentAddr += MOS->nreloc * 8;
// write the finalized section command to the output buffer
TOI->outstring(FH, MOS->sectname, 16);
TOI->outstring(FH, MOS->segname, 16);
TOI->outaddr(FH, MOS->addr);
TOI->outaddr(FH, MOS->size);
TOI->outword(FH, MOS->offset);
TOI->outword(FH, MOS->align);
TOI->outword(FH, MOS->reloff);
TOI->outword(FH, MOS->nreloc);
TOI->outword(FH, MOS->flags);
TOI->outword(FH, MOS->reserved1);
TOI->outword(FH, MOS->reserved2);
outstring(FH, MOS->sectname, 16);
outstring(FH, MOS->segname, 16);
outaddr(FH, MOS->addr);
outaddr(FH, MOS->size);
outword(FH, MOS->offset);
outword(FH, MOS->align);
outword(FH, MOS->reloff);
outword(FH, MOS->nreloc);
outword(FH, MOS->flags);
outword(FH, MOS->reserved1);
outword(FH, MOS->reserved2);
if (is64Bit)
TOI->outword(FH, MOS->reserved3);
outword(FH, MOS->reserved3);
}
// Step #7: Emit the symbol table to temporary buffers, so that we know the
@ -535,36 +521,36 @@ void MachOWriter::EmitHeaderAndLoadCommands() {
SymTab.nsyms = SymbolTable.size();
SymTab.stroff = SymTab.symoff + SymT.size();
SymTab.strsize = StrT.size();
TOI->outword(FH, SymTab.cmd);
TOI->outword(FH, SymTab.cmdsize);
TOI->outword(FH, SymTab.symoff);
TOI->outword(FH, SymTab.nsyms);
TOI->outword(FH, SymTab.stroff);
TOI->outword(FH, SymTab.strsize);
outword(FH, SymTab.cmd);
outword(FH, SymTab.cmdsize);
outword(FH, SymTab.symoff);
outword(FH, SymTab.nsyms);
outword(FH, SymTab.stroff);
outword(FH, SymTab.strsize);
// FIXME: set DySymTab fields appropriately
// We should probably just update these in BufferSymbolAndStringTable since
// thats where we're partitioning up the different kinds of symbols.
TOI->outword(FH, DySymTab.cmd);
TOI->outword(FH, DySymTab.cmdsize);
TOI->outword(FH, DySymTab.ilocalsym);
TOI->outword(FH, DySymTab.nlocalsym);
TOI->outword(FH, DySymTab.iextdefsym);
TOI->outword(FH, DySymTab.nextdefsym);
TOI->outword(FH, DySymTab.iundefsym);
TOI->outword(FH, DySymTab.nundefsym);
TOI->outword(FH, DySymTab.tocoff);
TOI->outword(FH, DySymTab.ntoc);
TOI->outword(FH, DySymTab.modtaboff);
TOI->outword(FH, DySymTab.nmodtab);
TOI->outword(FH, DySymTab.extrefsymoff);
TOI->outword(FH, DySymTab.nextrefsyms);
TOI->outword(FH, DySymTab.indirectsymoff);
TOI->outword(FH, DySymTab.nindirectsyms);
TOI->outword(FH, DySymTab.extreloff);
TOI->outword(FH, DySymTab.nextrel);
TOI->outword(FH, DySymTab.locreloff);
TOI->outword(FH, DySymTab.nlocrel);
outword(FH, DySymTab.cmd);
outword(FH, DySymTab.cmdsize);
outword(FH, DySymTab.ilocalsym);
outword(FH, DySymTab.nlocalsym);
outword(FH, DySymTab.iextdefsym);
outword(FH, DySymTab.nextdefsym);
outword(FH, DySymTab.iundefsym);
outword(FH, DySymTab.nundefsym);
outword(FH, DySymTab.tocoff);
outword(FH, DySymTab.ntoc);
outword(FH, DySymTab.modtaboff);
outword(FH, DySymTab.nmodtab);
outword(FH, DySymTab.extrefsymoff);
outword(FH, DySymTab.nextrefsyms);
outword(FH, DySymTab.indirectsymoff);
outword(FH, DySymTab.nindirectsyms);
outword(FH, DySymTab.extreloff);
outword(FH, DySymTab.nextrel);
outword(FH, DySymTab.locreloff);
outword(FH, DySymTab.nlocrel);
O.write((char*)&FH[0], FH.size());
}
@ -641,7 +627,7 @@ void MachOWriter::BufferSymbolAndStringTable() {
// Write out a leading zero byte when emitting string table, for n_strx == 0
// which means an empty string.
TOI->outbyte(StrT, 0);
outbyte(StrT, 0);
// The order of the string table is:
// 1. strings for external symbols
@ -654,7 +640,7 @@ void MachOWriter::BufferSymbolAndStringTable() {
I->n_strx = 0;
} else {
I->n_strx = StrT.size();
TOI->outstring(StrT, I->GVName, I->GVName.length()+1);
outstring(StrT, I->GVName, I->GVName.length()+1);
}
}
@ -668,11 +654,11 @@ void MachOWriter::BufferSymbolAndStringTable() {
I->n_value += GVSection[GV]->addr;
// Emit nlist to buffer
TOI->outword(SymT, I->n_strx);
TOI->outbyte(SymT, I->n_type);
TOI->outbyte(SymT, I->n_sect);
TOI->outhalf(SymT, I->n_desc);
TOI->outaddr(SymT, I->n_value);
outword(SymT, I->n_strx);
outbyte(SymT, I->n_type);
outbyte(SymT, I->n_sect);
outhalf(SymT, I->n_desc);
outaddr(SymT, I->n_value);
}
}

36
lib/Target/PowerPC/PPCMachOWriter.cpp
View File

@ -2,8 +2,8 @@
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Nate Begeman and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
// This file was developed by Nate Begeman and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
@ -17,7 +17,6 @@
#include "llvm/PassManager.h"
#include "llvm/CodeGen/MachOWriter.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Target/TargetObjInfo.h"
using namespace llvm;
namespace {
@ -92,10 +91,10 @@ void PPCMachOWriter::GetTargetRelocation(MachineRelocation &MR,
MachORelocation VANILLA(MR.getMachineCodeOffset(), To.Index, false, 2,
isExtern, PPC_RELOC_VANILLA);
++From.nreloc;
TOI->outword(From.RelocBuffer, VANILLA.r_address);
TOI->outword(From.RelocBuffer, VANILLA.getPackedFields());
outword(From.RelocBuffer, VANILLA.r_address);
outword(From.RelocBuffer, VANILLA.getPackedFields());
}
TOI->fixword(From.SectionData, Addr, MR.getMachineCodeOffset());
fixword(From.SectionData, Addr, MR.getMachineCodeOffset());
break;
case PPC::reloc_pcrel_bx:
Addr -= MR.getMachineCodeOffset();
@ -103,12 +102,12 @@ void PPCMachOWriter::GetTargetRelocation(MachineRelocation &MR,
Addr &= 0xFFFFFF;
Addr <<= 2;
Addr |= (From.SectionData[MR.getMachineCodeOffset()] << 24);
TOI->fixword(From.SectionData, Addr, MR.getMachineCodeOffset());
fixword(From.SectionData, Addr, MR.getMachineCodeOffset());
break;
case PPC::reloc_pcrel_bcx:
Addr -= MR.getMachineCodeOffset();
Addr &= 0xFFFC;
TOI->fixhalf(From.SectionData, Addr, MR.getMachineCodeOffset() + 2);
fixhalf(From.SectionData, Addr, MR.getMachineCodeOffset() + 2);
break;
case PPC::reloc_absolute_high:
{
@ -118,14 +117,14 @@ void PPCMachOWriter::GetTargetRelocation(MachineRelocation &MR,
PPC_RELOC_PAIR);
++From.nreloc;
++From.nreloc;
TOI->outword(From.RelocBuffer, HA16.r_address);
TOI->outword(From.RelocBuffer, HA16.getPackedFields());
TOI->outword(From.RelocBuffer, PAIR.r_address);
TOI->outword(From.RelocBuffer, PAIR.getPackedFields());
outword(From.RelocBuffer, HA16.r_address);
outword(From.RelocBuffer, HA16.getPackedFields());
outword(From.RelocBuffer, PAIR.r_address);
outword(From.RelocBuffer, PAIR.getPackedFields());
}
printf("ha16: %x\n", (unsigned)Addr);
Addr += 0x8000;
TOI->fixhalf(From.SectionData, Addr >> 16, MR.getMachineCodeOffset() + 2);
fixhalf(From.SectionData, Addr >> 16, MR.getMachineCodeOffset() + 2);
break;
case PPC::reloc_absolute_low:
{
@ -135,13 +134,13 @@ void PPCMachOWriter::GetTargetRelocation(MachineRelocation &MR,
PPC_RELOC_PAIR);
++From.nreloc;
++From.nreloc;
TOI->outword(From.RelocBuffer, LO16.r_address);
TOI->outword(From.RelocBuffer, LO16.getPackedFields());
TOI->outword(From.RelocBuffer, PAIR.r_address);
TOI->outword(From.RelocBuffer, PAIR.getPackedFields());
outword(From.RelocBuffer, LO16.r_address);
outword(From.RelocBuffer, LO16.getPackedFields());
outword(From.RelocBuffer, PAIR.r_address);
outword(From.RelocBuffer, PAIR.getPackedFields());
}
printf("lo16: %x\n", (unsigned)Addr);
TOI->fixhalf(From.SectionData, Addr, MR.getMachineCodeOffset() + 2);
fixhalf(From.SectionData, Addr, MR.getMachineCodeOffset() + 2);
break;
}
}
@ -151,3 +150,4 @@ MachineRelocation PPCMachOWriter::GetJTRelocation(unsigned Offset,
// FIXME: do something about PIC
return MachineRelocation::getBB(Offset, PPC::reloc_vanilla, MBB);
}

5
lib/Target/PowerPC/PPCTargetMachine.cpp
View File

@ -13,7 +13,6 @@
#include "PPC.h"
#include "PPCTargetAsmInfo.h"
#include "PPCTargetObjInfo.h"
#include "PPCTargetMachine.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
@ -35,10 +34,6 @@ const TargetAsmInfo *PPCTargetMachine::createTargetAsmInfo() const {
return new LinuxTargetAsmInfo(*this);
}
const TargetObjInfo *PPCTargetMachine::createTargetObjInfo() const {
return new MachOTargetObjInfo(*this);
}
unsigned PPC32TargetMachine::getJITMatchQuality() {
#if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)
if (sizeof(void*) == 4)

1
lib/Target/PowerPC/PPCTargetMachine.h
View File

@ -39,7 +39,6 @@ class PPCTargetMachine : public LLVMTargetMachine {
protected:
virtual const TargetAsmInfo *createTargetAsmInfo() const;
virtual const TargetObjInfo *createTargetObjInfo() const;
public:
PPCTargetMachine(const Module &M, const std::string &FS, bool is64Bit);

22
lib/Target/PowerPC/PPCTargetObjInfo.cpp
View File

@ -1,22 +0,0 @@
//===-- 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()) {}

145
lib/Target/PowerPC/PPCTargetObjInfo.h
View File

@ -1,145 +0,0 @@
//===-- 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

2
lib/Target/TargetMachine.cpp
View File

@ -13,7 +13,6 @@
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetObjInfo.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
@ -105,7 +104,6 @@ namespace {
TargetMachine::~TargetMachine() {
delete AsmInfo;
delete ObjInfo;
}
/// getRelocationModel - Returns the code generation relocation model. The

5
lib/Target/X86/X86TargetMachine.cpp
View File

@ -12,7 +12,6 @@
//===----------------------------------------------------------------------===//
#include "X86TargetAsmInfo.h"
#include "X86TargetObjInfo.h"
#include "X86TargetMachine.h"
#include "X86.h"
#include "llvm/Module.h"
@ -43,10 +42,6 @@ const TargetAsmInfo *X86TargetMachine::createTargetAsmInfo() const {
return new X86TargetAsmInfo(*this);
}
const TargetObjInfo *X86TargetMachine::createTargetObjInfo() const {
return new ELFTargetObjInfo(*this);
}
unsigned X86_32TargetMachine::getJITMatchQuality() {
#if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
return 10;

1
lib/Target/X86/X86TargetMachine.h
View File

@ -35,7 +35,6 @@ class X86TargetMachine : public LLVMTargetMachine {
protected:
virtual const TargetAsmInfo *createTargetAsmInfo() const;
virtual const TargetObjInfo *createTargetObjInfo() const;
public:
X86TargetMachine(const Module &M, const std::string &FS, bool is64Bit);

22
lib/Target/X86/X86TargetObjInfo.cpp
View File

@ -1,22 +0,0 @@
//===-- X86TargetObjInfo.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 X86
//
//===----------------------------------------------------------------------===//
#include "X86TargetObjInfo.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
using namespace llvm;
ELFTargetObjInfo::ELFTargetObjInfo(const TargetMachine &tm)
: TM(tm),
is64Bit(TM.getTargetData()->getPointerSizeInBits() == 64),
isLittleEndian(TM.getTargetData()->isLittleEndian()) {}

141
lib/Target/X86/X86TargetObjInfo.h
View File

@ -1,141 +0,0 @@
//===-- X86TargetObjInfo.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 X86
//
//===----------------------------------------------------------------------===//
#ifndef X86TARGETOBJINFO_H
#define X86TARGETOBJINFO_H
#include "llvm/Target/TargetObjInfo.h"
namespace llvm {
class TargetMachine;
struct ELFTargetObjInfo : public TargetObjInfo {
ELFTargetObjInfo(const TargetMachine &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 {
// Not implemented
}
//===------------------------------------------------------------------===//
// 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 {
if (!is64Bit)
fixword(Output, (unsigned)X, Offset);
else
assert(0 && "Emission of 64-bit data not implemented yet!");
}
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 // X86TARGETOBJINFO_H