#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCAsmBackend.h"
-#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Twine.h"
++stats::evaluateFixup;
if (!Fixup.getValue()->EvaluateAsRelocatable(Target, Layout))
- report_fatal_error("expected relocatable expression");
+ getContext().FatalError(Fixup.getLoc(), "expected relocatable expression");
bool IsPCRel = Backend.getFixupKindInfo(
Fixup.getKind()).Flags & MCFixupKindInfo::FKF_IsPCRel;
Value = Target.getConstant();
- bool IsThumb = false;
if (const MCSymbolRefExpr *A = Target.getSymA()) {
const MCSymbol &Sym = A->getSymbol().AliasedSymbol();
if (Sym.isDefined())
Value += Layout.getSymbolOffset(&getSymbolData(Sym));
- if (isThumbFunc(&Sym))
- IsThumb = true;
}
if (const MCSymbolRefExpr *B = Target.getSymB()) {
const MCSymbol &Sym = B->getSymbol().AliasedSymbol();
Value -= Offset;
}
- // ARM fixups based from a thumb function address need to have the low
- // bit set. The actual value is always at least 16-bit aligned, so the
- // low bit is normally clear and available for use as an ISA flag for
- // interworking.
- if (IsThumb)
- Value |= 1;
+ // Let the backend adjust the fixup value if necessary, including whether
+ // we need a relocation.
+ Backend.processFixupValue(*this, Layout, Fixup, DF, Target, Value,
+ IsResolved);
return IsResolved;
}
return cast<MCDwarfCallFrameFragment>(F).getContents().size();
}
- assert(0 && "invalid fragment kind");
- return 0;
+ llvm_unreachable("invalid fragment kind");
}
void MCAsmLayout::LayoutFragment(MCFragment *F) {
// bytes left to fill use the the Value and ValueSize to fill the rest.
// If we are aligning with nops, ask that target to emit the right data.
if (AF.hasEmitNops()) {
- if (!Asm.getBackend().WriteNopData(Count, OW))
+ if (!Asm.getBackend().writeNopData(Count, OW))
report_fatal_error("unable to write nop sequence of " +
Twine(Count) + " bytes");
break;
// Otherwise, write out in multiples of the value size.
for (uint64_t i = 0; i != Count; ++i) {
switch (AF.getValueSize()) {
- default:
- assert(0 && "Invalid size!");
+ default: llvm_unreachable("Invalid size!");
case 1: OW->Write8 (uint8_t (AF.getValue())); break;
case 2: OW->Write16(uint16_t(AF.getValue())); break;
case 4: OW->Write32(uint32_t(AF.getValue())); break;
for (uint64_t i = 0, e = FF.getSize() / FF.getValueSize(); i != e; ++i) {
switch (FF.getValueSize()) {
- default:
- assert(0 && "Invalid size!");
+ default: llvm_unreachable("Invalid size!");
case 1: OW->Write8 (uint8_t (FF.getValue())); break;
case 2: OW->Write16(uint16_t(FF.getValue())); break;
case 4: OW->Write32(uint32_t(FF.getValue())); break;
for (MCSectionData::const_iterator it = SD->begin(),
ie = SD->end(); it != ie; ++it) {
switch (it->getKind()) {
- default:
- assert(0 && "Invalid fragment in virtual section!");
+ default: llvm_unreachable("Invalid fragment in virtual section!");
case MCFragment::FT_Data: {
// Check that we aren't trying to write a non-zero contents (or fixups)
// into a virtual section. This is to support clients which use standard
ie3 = DF->fixup_end(); it3 != ie3; ++it3) {
MCFixup &Fixup = *it3;
uint64_t FixedValue = handleFixup(Layout, *DF, Fixup);
- getBackend().ApplyFixup(Fixup, DF->getContents().data(),
+ getBackend().applyFixup(Fixup, DF->getContents().data(),
DF->getContents().size(), FixedValue);
}
}
ie3 = IF->fixup_end(); it3 != ie3; ++it3) {
MCFixup &Fixup = *it3;
uint64_t FixedValue = handleFixup(Layout, *IF, Fixup);
- getBackend().ApplyFixup(Fixup, IF->getCode().data(),
+ getBackend().applyFixup(Fixup, IF->getCode().data(),
IF->getCode().size(), FixedValue);
}
}
}
bool MCAssembler::fixupNeedsRelaxation(const MCFixup &Fixup,
- const MCFragment *DF,
+ const MCInstFragment *DF,
const MCAsmLayout &Layout) const {
if (getRelaxAll())
return true;
if (!evaluateFixup(Layout, Fixup, DF, Target, Value))
return true;
- // Otherwise, relax if the value is too big for a (signed) i8.
- //
- // FIXME: This is target dependent!
- return int64_t(Value) != int64_t(int8_t(Value));
+ return getBackend().fixupNeedsRelaxation(Fixup, Value, DF, Layout);
}
bool MCAssembler::fragmentNeedsRelaxation(const MCInstFragment *IF,
// If this inst doesn't ever need relaxation, ignore it. This occurs when we
// are intentionally pushing out inst fragments, or because we relaxed a
// previous instruction to one that doesn't need relaxation.
- if (!getBackend().MayNeedRelaxation(IF->getInst()))
+ if (!getBackend().mayNeedRelaxation(IF->getInst()))
return false;
for (MCInstFragment::const_fixup_iterator it = IF->fixup_begin(),
// Relax the fragment.
MCInst Relaxed;
- getBackend().RelaxInstruction(IF.getInst(), Relaxed);
+ getBackend().relaxInstruction(IF.getInst(), Relaxed);
// Encode the new instruction.
//
}
OS << "]>\n";
}
+
+// anchors for MC*Fragment vtables
+void MCDataFragment::anchor() { }
+void MCInstFragment::anchor() { }
+void MCAlignFragment::anchor() { }
+void MCFillFragment::anchor() { }
+void MCOrgFragment::anchor() { }
+void MCLEBFragment::anchor() { }
+void MCDwarfLineAddrFragment::anchor() { }
+void MCDwarfCallFrameFragment::anchor() { }