LLVM 20.0.0git
MSP430ELFStreamer.cpp
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1//===-- MSP430ELFStreamer.cpp - MSP430 ELF Target Streamer Methods --------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file provides MSP430 specific target streamer methods.
10//
11//===----------------------------------------------------------------------===//
12
13#include "MSP430MCTargetDesc.h"
15#include "llvm/MC/MCAssembler.h"
16#include "llvm/MC/MCContext.h"
19#include "llvm/MC/MCStreamer.h"
22
23using namespace llvm;
24using namespace llvm::MSP430Attrs;
25
26namespace llvm {
27
29public:
32};
33
34// This part is for ELF object output.
36 const MCSubtargetInfo &STI)
37 : MCTargetStreamer(S) {
38 // Emit build attributes section according to
39 // MSP430 EABI (slaa534.pdf, part 13).
40 MCSection *AttributeSection = getStreamer().getContext().getELFSection(
41 ".MSP430.attributes", ELF::SHT_MSP430_ATTRIBUTES, 0);
42 Streamer.switchSection(AttributeSection);
43
44 // Format version.
45 Streamer.emitInt8(0x41);
46 // Subsection length.
48 // Vendor name string, zero-terminated.
49 Streamer.emitBytes("mspabi");
51
52 // Attribute vector scope tag. 1 stands for the entire file.
54 // Attribute vector length.
56
58 Streamer.emitInt8(STI.hasFeature(MSP430::FeatureX) ? ISAMSP430X : ISAMSP430);
63 // Don't emit TagEnumSize, for full GCC compatibility.
64}
65
67 return static_cast<MCELFStreamer &>(Streamer);
68}
69
72 const Triple &TT = STI.getTargetTriple();
73 if (TT.isOSBinFormatELF())
74 return new MSP430TargetELFStreamer(S, STI);
75 return nullptr;
76}
77
78} // namespace llvm
This file contains enumerations for MSP430 ELF build attributes as defined in the MSP430 ELF psABI sp...
MCSectionELF * getELFSection(const Twine &Section, unsigned Type, unsigned Flags)
Definition: MCContext.h:551
Instances of this class represent a uniqued identifier for a section in the current translation unit.
Definition: MCSection.h:36
Streaming machine code generation interface.
Definition: MCStreamer.h:213
MCContext & getContext() const
Definition: MCStreamer.h:300
virtual void switchSection(MCSection *Section, uint32_t Subsec=0)
Set the current section where code is being emitted to Section.
void emitInt32(uint64_t Value)
Definition: MCStreamer.h:721
void emitInt8(uint64_t Value)
Definition: MCStreamer.h:719
virtual void emitBytes(StringRef Data)
Emit the bytes in Data into the output.
Generic base class for all target subtargets.
bool hasFeature(unsigned Feature) const
const Triple & getTargetTriple() const
Target specific streamer interface.
Definition: MCStreamer.h:94
MCStreamer & Streamer
Definition: MCStreamer.h:96
MSP430TargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI)
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
@ SHT_MSP430_ATTRIBUTES
Definition: ELF.h:1169
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
MCTargetStreamer * createMSP430ObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI)