mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-28 04:29:44 +00:00
974a445bd9
subsequent changes are easier to review. About to fix some layering issues, and wanted to separate out the necessary churn. Also comment and sink the include of "Windows.h" in three .inc files to match the usage in Memory.inc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198685 91177308-0d34-0410-b5e6-96231b3b80d8
117 lines
4.1 KiB
C++
117 lines
4.1 KiB
C++
//===-- X86MachORelocationInfo.cpp ----------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "MCTargetDesc/X86MCTargetDesc.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/MC/MCInst.h"
|
|
#include "llvm/MC/MCRelocationInfo.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/Object/MachO.h"
|
|
|
|
using namespace llvm;
|
|
using namespace object;
|
|
using namespace MachO;
|
|
|
|
namespace {
|
|
class X86_64MachORelocationInfo : public MCRelocationInfo {
|
|
public:
|
|
X86_64MachORelocationInfo(MCContext &Ctx) : MCRelocationInfo(Ctx) {}
|
|
|
|
const MCExpr *createExprForRelocation(RelocationRef Rel) {
|
|
const MachOObjectFile *Obj = cast<MachOObjectFile>(Rel.getObjectFile());
|
|
|
|
uint64_t RelType; Rel.getType(RelType);
|
|
symbol_iterator SymI = Rel.getSymbol();
|
|
|
|
StringRef SymName; SymI->getName(SymName);
|
|
uint64_t SymAddr; SymI->getAddress(SymAddr);
|
|
|
|
any_relocation_info RE = Obj->getRelocation(Rel.getRawDataRefImpl());
|
|
bool isPCRel = Obj->getAnyRelocationPCRel(RE);
|
|
|
|
MCSymbol *Sym = Ctx.GetOrCreateSymbol(SymName);
|
|
// FIXME: check that the value is actually the same.
|
|
if (Sym->isVariable() == false)
|
|
Sym->setVariableValue(MCConstantExpr::Create(SymAddr, Ctx));
|
|
const MCExpr *Expr = 0;
|
|
|
|
switch(RelType) {
|
|
case X86_64_RELOC_TLV:
|
|
Expr = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_TLVP, Ctx);
|
|
break;
|
|
case X86_64_RELOC_SIGNED_4:
|
|
Expr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(Sym, Ctx),
|
|
MCConstantExpr::Create(4, Ctx),
|
|
Ctx);
|
|
break;
|
|
case X86_64_RELOC_SIGNED_2:
|
|
Expr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(Sym, Ctx),
|
|
MCConstantExpr::Create(2, Ctx),
|
|
Ctx);
|
|
break;
|
|
case X86_64_RELOC_SIGNED_1:
|
|
Expr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(Sym, Ctx),
|
|
MCConstantExpr::Create(1, Ctx),
|
|
Ctx);
|
|
break;
|
|
case X86_64_RELOC_GOT_LOAD:
|
|
Expr = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_GOTPCREL, Ctx);
|
|
break;
|
|
case X86_64_RELOC_GOT:
|
|
Expr = MCSymbolRefExpr::Create(Sym, isPCRel ?
|
|
MCSymbolRefExpr::VK_GOTPCREL :
|
|
MCSymbolRefExpr::VK_GOT,
|
|
Ctx);
|
|
break;
|
|
case X86_64_RELOC_SUBTRACTOR:
|
|
{
|
|
RelocationRef RelNext;
|
|
Obj->getRelocationNext(Rel.getRawDataRefImpl(), RelNext);
|
|
any_relocation_info RENext = Obj->getRelocation(RelNext.getRawDataRefImpl());
|
|
|
|
// X86_64_SUBTRACTOR must be followed by a relocation of type
|
|
// X86_64_RELOC_UNSIGNED.
|
|
// NOTE: Scattered relocations don't exist on x86_64.
|
|
unsigned RType = Obj->getAnyRelocationType(RENext);
|
|
if (RType != X86_64_RELOC_UNSIGNED)
|
|
report_fatal_error("Expected X86_64_RELOC_UNSIGNED after "
|
|
"X86_64_RELOC_SUBTRACTOR.");
|
|
|
|
const MCExpr *LHS = MCSymbolRefExpr::Create(Sym, Ctx);
|
|
|
|
symbol_iterator RSymI = RelNext.getSymbol();
|
|
uint64_t RSymAddr;
|
|
RSymI->getAddress(RSymAddr);
|
|
StringRef RSymName;
|
|
RSymI->getName(RSymName);
|
|
|
|
MCSymbol *RSym = Ctx.GetOrCreateSymbol(RSymName);
|
|
if (RSym->isVariable() == false)
|
|
RSym->setVariableValue(MCConstantExpr::Create(RSymAddr, Ctx));
|
|
|
|
const MCExpr *RHS = MCSymbolRefExpr::Create(RSym, Ctx);
|
|
|
|
Expr = MCBinaryExpr::CreateSub(LHS, RHS, Ctx);
|
|
break;
|
|
}
|
|
default:
|
|
Expr = MCSymbolRefExpr::Create(Sym, Ctx);
|
|
break;
|
|
}
|
|
return Expr;
|
|
}
|
|
};
|
|
} // End unnamed namespace
|
|
|
|
/// createX86_64MachORelocationInfo - Construct an X86-64 Mach-O RelocationInfo.
|
|
MCRelocationInfo *llvm::createX86_64MachORelocationInfo(MCContext &Ctx) {
|
|
return new X86_64MachORelocationInfo(Ctx);
|
|
}
|