mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 11:13:28 +01:00
24233f2415
Summary: Adds support for emitting common local global symbols to an XCOFF object file. Local commons are emitted into the .bss section with a storage class of C_HIDEXT. Patch by: daltenty Reviewers: sfertile, hubert.reinterpretcast Differential Revision: https://reviews.llvm.org/D66097 llvm-svn: 370070
81 lines
3.3 KiB
C++
81 lines
3.3 KiB
C++
//===- lib/MC/MCXCOFFStreamer.cpp - XCOFF Object Output -------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file assembles .s files and emits XCOFF .o object files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/BinaryFormat/XCOFF.h"
|
|
#include "llvm/MC/MCAsmBackend.h"
|
|
#include "llvm/MC/MCCodeEmitter.h"
|
|
#include "llvm/MC/MCObjectWriter.h"
|
|
#include "llvm/MC/MCSymbolXCOFF.h"
|
|
#include "llvm/MC/MCXCOFFStreamer.h"
|
|
#include "llvm/Support/TargetRegistry.h"
|
|
|
|
using namespace llvm;
|
|
|
|
MCXCOFFStreamer::MCXCOFFStreamer(MCContext &Context,
|
|
std::unique_ptr<MCAsmBackend> MAB,
|
|
std::unique_ptr<MCObjectWriter> OW,
|
|
std::unique_ptr<MCCodeEmitter> Emitter)
|
|
: MCObjectStreamer(Context, std::move(MAB), std::move(OW),
|
|
std::move(Emitter)) {}
|
|
|
|
bool MCXCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
|
|
MCSymbolAttr Attribute) {
|
|
report_fatal_error("Symbol attributes not implemented for XCOFF.");
|
|
}
|
|
|
|
void MCXCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
|
|
unsigned ByteAlignment) {
|
|
getAssembler().registerSymbol(*Symbol);
|
|
Symbol->setExternal(cast<MCSymbolXCOFF>(Symbol)->getStorageClass() !=
|
|
XCOFF::C_HIDEXT);
|
|
Symbol->setCommon(Size, ByteAlignment);
|
|
|
|
// Need to add this symbol to the current Fragment which will belong to the
|
|
// containing CSECT.
|
|
auto *F = dyn_cast_or_null<MCDataFragment>(getCurrentFragment());
|
|
assert(F && "Expected a valid section with a fragment set.");
|
|
Symbol->setFragment(F);
|
|
|
|
// Emit the alignment and storage for the variable to the section.
|
|
EmitValueToAlignment(ByteAlignment);
|
|
EmitZeros(Size);
|
|
}
|
|
|
|
void MCXCOFFStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
|
|
uint64_t Size, unsigned ByteAlignment,
|
|
SMLoc Loc) {
|
|
report_fatal_error("Zero fill not implemented for XCOFF.");
|
|
}
|
|
|
|
void MCXCOFFStreamer::EmitInstToData(const MCInst &Inst,
|
|
const MCSubtargetInfo &) {
|
|
report_fatal_error("Instruction emission not implemented for XCOFF.");
|
|
}
|
|
|
|
MCStreamer *llvm::createXCOFFStreamer(MCContext &Context,
|
|
std::unique_ptr<MCAsmBackend> &&MAB,
|
|
std::unique_ptr<MCObjectWriter> &&OW,
|
|
std::unique_ptr<MCCodeEmitter> &&CE,
|
|
bool RelaxAll) {
|
|
MCXCOFFStreamer *S = new MCXCOFFStreamer(Context, std::move(MAB),
|
|
std::move(OW), std::move(CE));
|
|
if (RelaxAll)
|
|
S->getAssembler().setRelaxAll(true);
|
|
return S;
|
|
}
|
|
|
|
void MCXCOFFStreamer::EmitXCOFFLocalCommonSymbol(MCSymbol *Symbol,
|
|
uint64_t Size,
|
|
unsigned ByteAlignment) {
|
|
EmitCommonSymbol(Symbol, Size, ByteAlignment);
|
|
}
|