mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 16:29:20 +00:00
in the right direction. It eliminated some hacks and will unblock codegen work. But it's far from being done. It doesn't reject illegal expressions, e.g. (FOO - :lower16:BAR). It also doesn't work in Thumb2 mode at all. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123369 91177308-0d34-0410-b5e6-96231b3b80d8
74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
//===-- ARMMCExpr.cpp - ARM specific MC expression classes ----------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "armmcexpr"
|
|
#include "ARMMCExpr.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCAssembler.h"
|
|
using namespace llvm;
|
|
|
|
const ARMMCExpr*
|
|
ARMMCExpr::Create(VariantKind Kind, const MCExpr *Expr,
|
|
MCContext &Ctx) {
|
|
return new (Ctx) ARMMCExpr(Kind, Expr);
|
|
}
|
|
|
|
void ARMMCExpr::PrintImpl(raw_ostream &OS) const {
|
|
switch (Kind) {
|
|
default: assert(0 && "Invalid kind!");
|
|
case VK_ARM_HI16: OS << ":upper16:"; break;
|
|
case VK_ARM_LO16: OS << ":lower16:"; break;
|
|
}
|
|
|
|
const MCExpr *Expr = getSubExpr();
|
|
if (Expr->getKind() != MCExpr::SymbolRef)
|
|
OS << '(';
|
|
Expr->print(OS);
|
|
if (Expr->getKind() != MCExpr::SymbolRef)
|
|
OS << ')';
|
|
}
|
|
|
|
bool
|
|
ARMMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
|
|
const MCAsmLayout *Layout) const {
|
|
return false;
|
|
}
|
|
|
|
// FIXME: This basically copies MCObjectStreamer::AddValueSymbols. Perhaps
|
|
// that method should be made public?
|
|
static void AddValueSymbols_(const MCExpr *Value, MCAssembler *Asm) {
|
|
switch (Value->getKind()) {
|
|
case MCExpr::Target:
|
|
assert(0 && "Can't handle nested target expr!");
|
|
break;
|
|
|
|
case MCExpr::Constant:
|
|
break;
|
|
|
|
case MCExpr::Binary: {
|
|
const MCBinaryExpr *BE = cast<MCBinaryExpr>(Value);
|
|
AddValueSymbols_(BE->getLHS(), Asm);
|
|
AddValueSymbols_(BE->getRHS(), Asm);
|
|
break;
|
|
}
|
|
|
|
case MCExpr::SymbolRef:
|
|
Asm->getOrCreateSymbolData(cast<MCSymbolRefExpr>(Value)->getSymbol());
|
|
break;
|
|
|
|
case MCExpr::Unary:
|
|
AddValueSymbols_(cast<MCUnaryExpr>(Value)->getSubExpr(), Asm);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ARMMCExpr::AddValueSymbols(MCAssembler *Asm) const {
|
|
AddValueSymbols_(getSubExpr(), Asm);
|
|
}
|