Boilerplate for producing XCOFF object files from the PowerPC backend.
Stubs out a number of the classes needed to produce a new object file format
(XCOFF) for the powerpc-aix target. For testing input is an empty module which
produces an object file with just a file header.
Differential Revision: https://reviews.llvm.org/D61694
llvm-svn: 365541
diff --git a/llvm/lib/MC/MCXCOFFStreamer.cpp b/llvm/lib/MC/MCXCOFFStreamer.cpp
new file mode 100644
index 0000000..071de02
--- /dev/null
+++ b/llvm/lib/MC/MCXCOFFStreamer.cpp
@@ -0,0 +1,59 @@
+//===- 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/MC/MCXCOFFStreamer.h"
+#include "llvm/MC/MCAsmBackend.h"
+#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCObjectWriter.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) {
+ report_fatal_error("Emiting common symbols not implemented for XCOFF.");
+}
+
+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;
+}