1 //===-- X86WinCOFFObjectWriter.cpp - X86 Win COFF Writer ------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "MCTargetDesc/X86FixupKinds.h"
11 #include "MCTargetDesc/X86MCTargetDesc.h"
12 #include "llvm/MC/MCExpr.h"
13 #include "llvm/MC/MCValue.h"
14 #include "llvm/MC/MCWinCOFFObjectWriter.h"
15 #include "llvm/Support/COFF.h"
16 #include "llvm/Support/ErrorHandling.h"
25 class X86WinCOFFObjectWriter : public MCWinCOFFObjectTargetWriter {
27 X86WinCOFFObjectWriter(bool Is64Bit);
28 virtual ~X86WinCOFFObjectWriter();
30 unsigned getRelocType(const MCValue &Target, const MCFixup &Fixup,
31 bool IsCrossSection) const override;
35 X86WinCOFFObjectWriter::X86WinCOFFObjectWriter(bool Is64Bit)
36 : MCWinCOFFObjectTargetWriter(Is64Bit ? COFF::IMAGE_FILE_MACHINE_AMD64
37 : COFF::IMAGE_FILE_MACHINE_I386) {}
39 X86WinCOFFObjectWriter::~X86WinCOFFObjectWriter() {}
41 unsigned X86WinCOFFObjectWriter::getRelocType(const MCValue &Target,
43 bool IsCrossSection) const {
44 unsigned FixupKind = IsCrossSection ? FK_PCRel_4 : Fixup.getKind();
46 MCSymbolRefExpr::VariantKind Modifier = Target.isAbsolute() ?
47 MCSymbolRefExpr::VK_None : Target.getSymA()->getKind();
49 if (getMachine() == COFF::IMAGE_FILE_MACHINE_AMD64) {
52 case X86::reloc_riprel_4byte:
53 case X86::reloc_riprel_4byte_movq_load:
54 return COFF::IMAGE_REL_AMD64_REL32;
56 case X86::reloc_signed_4byte:
57 if (Modifier == MCSymbolRefExpr::VK_COFF_IMGREL32)
58 return COFF::IMAGE_REL_AMD64_ADDR32NB;
59 return COFF::IMAGE_REL_AMD64_ADDR32;
61 return COFF::IMAGE_REL_AMD64_ADDR64;
63 return COFF::IMAGE_REL_AMD64_SECTION;
65 return COFF::IMAGE_REL_AMD64_SECREL;
67 llvm_unreachable("unsupported relocation type");
69 } else if (getMachine() == COFF::IMAGE_FILE_MACHINE_I386) {
72 case X86::reloc_riprel_4byte:
73 case X86::reloc_riprel_4byte_movq_load:
74 return COFF::IMAGE_REL_I386_REL32;
76 case X86::reloc_signed_4byte:
77 if (Modifier == MCSymbolRefExpr::VK_COFF_IMGREL32)
78 return COFF::IMAGE_REL_I386_DIR32NB;
79 return COFF::IMAGE_REL_I386_DIR32;
81 return COFF::IMAGE_REL_I386_SECTION;
83 return COFF::IMAGE_REL_I386_SECREL;
85 llvm_unreachable("unsupported relocation type");
88 llvm_unreachable("Unsupported COFF machine type.");
91 MCObjectWriter *llvm::createX86WinCOFFObjectWriter(raw_ostream &OS,
93 MCWinCOFFObjectTargetWriter *MOTW = new X86WinCOFFObjectWriter(Is64Bit);
94 return createWinCOFFObjectWriter(MOTW, OS);