1fbfa333f6
* Rename the vague `Value` to `Fill`. * FillLen is at most 8. Making the field smaller to facilitate encoding MCAlignFragment as a MCFragment union member. * Replace an unreachable report_fatal_error with assert.
130 lines
4.8 KiB
C++
130 lines
4.8 KiB
C++
//===- SystemZHLASMAsmStreamer.h - HLASM Assembly Text Output ---*- C++ -*-===//
|
|
//
|
|
// 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 declares the SystemZHLASMAsmStreamer class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_SYSTEMZ_MCTARGETDESC_SYSTEMZHLASMASMSTREAMER_H
|
|
#define LLVM_LIB_TARGET_SYSTEMZ_MCTARGETDESC_SYSTEMZHLASMASMSTREAMER_H
|
|
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/MC/MCAsmBackend.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCAssembler.h"
|
|
#include "llvm/MC/MCCodeEmitter.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCInst.h"
|
|
#include "llvm/MC/MCInstPrinter.h"
|
|
#include "llvm/MC/MCObjectWriter.h"
|
|
#include "llvm/MC/MCStreamer.h"
|
|
#include "llvm/MC/MCTargetOptions.h"
|
|
#include "llvm/Support/FormattedStream.h"
|
|
|
|
namespace llvm {
|
|
|
|
class SystemZHLASMAsmStreamer final : public MCStreamer {
|
|
constexpr static size_t InstLimit = 80;
|
|
constexpr static size_t ContIndicatorColumn = 72;
|
|
constexpr static size_t ContStartColumn = 15;
|
|
constexpr static size_t ContLen = ContIndicatorColumn - ContStartColumn;
|
|
std::unique_ptr<formatted_raw_ostream> FOSOwner;
|
|
formatted_raw_ostream &FOS;
|
|
std::string Str;
|
|
raw_string_ostream OS;
|
|
const MCAsmInfo *MAI;
|
|
std::unique_ptr<MCInstPrinter> InstPrinter;
|
|
std::unique_ptr<MCAssembler> Assembler;
|
|
SmallString<128> CommentToEmit;
|
|
raw_svector_ostream CommentStream;
|
|
raw_null_ostream NullStream;
|
|
bool IsVerboseAsm = false;
|
|
|
|
public:
|
|
SystemZHLASMAsmStreamer(MCContext &Context,
|
|
std::unique_ptr<formatted_raw_ostream> os,
|
|
std::unique_ptr<MCInstPrinter> printer,
|
|
std::unique_ptr<MCCodeEmitter> emitter,
|
|
std::unique_ptr<MCAsmBackend> asmbackend)
|
|
: MCStreamer(Context), FOSOwner(std::move(os)), FOS(*FOSOwner), OS(Str),
|
|
MAI(Context.getAsmInfo()), InstPrinter(std::move(printer)),
|
|
Assembler(std::make_unique<MCAssembler>(
|
|
Context, std::move(asmbackend), std::move(emitter),
|
|
(asmbackend) ? asmbackend->createObjectWriter(NullStream)
|
|
: nullptr)),
|
|
CommentStream(CommentToEmit) {
|
|
assert(InstPrinter);
|
|
if (Assembler->getBackendPtr())
|
|
setAllowAutoPadding(Assembler->getBackend().allowAutoPadding());
|
|
|
|
Context.setUseNamesOnTempLabels(true);
|
|
auto *TO = Context.getTargetOptions();
|
|
if (!TO)
|
|
return;
|
|
IsVerboseAsm = TO->AsmVerbose;
|
|
if (IsVerboseAsm)
|
|
InstPrinter->setCommentStream(CommentStream);
|
|
}
|
|
|
|
MCAssembler &getAssembler() { return *Assembler; }
|
|
|
|
void EmitEOL();
|
|
void EmitComment();
|
|
|
|
/// Add a comment that can be emitted to the generated .s file to make the
|
|
/// output of the compiler more readable. This only affects the MCAsmStreamer
|
|
/// and only when verbose assembly output is enabled.
|
|
void AddComment(const Twine &T, bool EOL = true) override;
|
|
|
|
void emitBytes(StringRef Data) override;
|
|
|
|
void emitAlignmentDS(uint64_t ByteAlignment, std::optional<int64_t> Value,
|
|
unsigned ValueSize, unsigned MaxBytesToEmit);
|
|
void emitValueToAlignment(Align Alignment, int64_t Fill, uint8_t FillLen,
|
|
unsigned MaxBytesToEmit) override;
|
|
|
|
void emitCodeAlignment(Align Alignment, const MCSubtargetInfo *STI,
|
|
unsigned MaxBytesToEmit = 0) override;
|
|
|
|
/// Return true if this streamer supports verbose assembly at all.
|
|
bool isVerboseAsm() const override { return IsVerboseAsm; }
|
|
|
|
/// Do we support EmitRawText?
|
|
bool hasRawTextSupport() const override { return true; }
|
|
|
|
/// @name MCStreamer Interface
|
|
/// @{
|
|
|
|
void changeSection(MCSection *Section, uint32_t Subsection) override;
|
|
|
|
void emitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
|
|
void emitLabel(MCSymbol *Symbol, SMLoc Loc) override;
|
|
bool emitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override {
|
|
return false;
|
|
}
|
|
|
|
void emitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
|
|
Align ByteAlignment) override {}
|
|
|
|
void emitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
|
|
uint64_t Size = 0, Align ByteAlignment = Align(1),
|
|
SMLoc Loc = SMLoc()) override {}
|
|
void emitRawTextImpl(StringRef String) override;
|
|
void emitValueImpl(const MCExpr *Value, unsigned Size, SMLoc Loc) override;
|
|
|
|
void emitHLASMValueImpl(const MCExpr *Value, unsigned Size,
|
|
bool Parens = false);
|
|
/// @}
|
|
|
|
void emitEnd();
|
|
};
|
|
} // namespace llvm
|
|
|
|
#endif // LLVM_LIB_TARGET_SYSTEMZ_MCTARGETDESC_SYSTEMZHLASMASMSTREAMER_H
|