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annotate lib/Object/Binary.cpp @ 20:a5b470e0d09d

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set FastCC(Calling Convention) when the function is code segment and set GuaranteedTailCallOpt. but llvm still output not jmp but call...
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sun, 06 Oct 2013 18:16:15 +0900
parents 9ad51c7bc036
children
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1 //===- Binary.cpp - A generic binary file -----------------------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file defines the Binary class.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "llvm/Object/Binary.h"
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15 #include "llvm/ADT/StringRef.h"
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16 #include "llvm/Support/MemoryBuffer.h"
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17 #include "llvm/Support/Path.h"
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18
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19 // Include headers for createBinary.
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20 #include "llvm/Object/Archive.h"
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21 #include "llvm/Object/COFF.h"
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22 #include "llvm/Object/ObjectFile.h"
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23
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24 using namespace llvm;
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25 using namespace object;
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26
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27 Binary::~Binary() {
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28 delete Data;
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29 }
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30
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31 Binary::Binary(unsigned int Type, MemoryBuffer *Source)
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32 : TypeID(Type)
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33 , Data(Source) {}
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34
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35 StringRef Binary::getData() const {
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36 return Data->getBuffer();
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37 }
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38
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39 StringRef Binary::getFileName() const {
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40 return Data->getBufferIdentifier();
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41 }
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42
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43 error_code object::createBinary(MemoryBuffer *Source,
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44 OwningPtr<Binary> &Result) {
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45 OwningPtr<MemoryBuffer> scopedSource(Source);
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46 if (!Source)
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47 return make_error_code(errc::invalid_argument);
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48 if (Source->getBufferSize() < 64)
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49 return object_error::invalid_file_type;
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50 sys::LLVMFileType type = sys::IdentifyFileType(Source->getBufferStart(),
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51 static_cast<unsigned>(Source->getBufferSize()));
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52 error_code ec;
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53 switch (type) {
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54 case sys::Archive_FileType: {
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55 OwningPtr<Binary> ret(new Archive(scopedSource.take(), ec));
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56 if (ec) return ec;
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57 Result.swap(ret);
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58 return object_error::success;
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59 }
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60 case sys::ELF_Relocatable_FileType:
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61 case sys::ELF_Executable_FileType:
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62 case sys::ELF_SharedObject_FileType:
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63 case sys::ELF_Core_FileType: {
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64 OwningPtr<Binary> ret(
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65 ObjectFile::createELFObjectFile(scopedSource.take()));
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66 if (!ret)
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67 return object_error::invalid_file_type;
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68 Result.swap(ret);
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69 return object_error::success;
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70 }
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71 case sys::Mach_O_Object_FileType:
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72 case sys::Mach_O_Executable_FileType:
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73 case sys::Mach_O_FixedVirtualMemorySharedLib_FileType:
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74 case sys::Mach_O_Core_FileType:
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75 case sys::Mach_O_PreloadExecutable_FileType:
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76 case sys::Mach_O_DynamicallyLinkedSharedLib_FileType:
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77 case sys::Mach_O_DynamicLinker_FileType:
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78 case sys::Mach_O_Bundle_FileType:
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79 case sys::Mach_O_DynamicallyLinkedSharedLibStub_FileType: {
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80 OwningPtr<Binary> ret(
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81 ObjectFile::createMachOObjectFile(scopedSource.take()));
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82 if (!ret)
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83 return object_error::invalid_file_type;
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84 Result.swap(ret);
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85 return object_error::success;
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86 }
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87 case sys::COFF_FileType: {
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88 OwningPtr<Binary> ret(new COFFObjectFile(scopedSource.take(), ec));
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89 if (ec) return ec;
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90 Result.swap(ret);
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91 return object_error::success;
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92 }
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93 default: // Unrecognized object file format.
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94 return object_error::invalid_file_type;
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95 }
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96 }
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97
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98 error_code object::createBinary(StringRef Path, OwningPtr<Binary> &Result) {
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99 OwningPtr<MemoryBuffer> File;
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100 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Path, File))
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101 return ec;
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102 return createBinary(File.take(), Result);
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103 }