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ca9ceef593
This patch adds basic CSKY branch instructions and symbol address series instructions. Those two kinds of instruction have relationship between each other, and it involves much work about Fixups. For now, basic instructions are enabled except for disassembler support. We would support to generate basic codegen asm firstly and delay disassembler work later. Differential Revision: https://reviews.llvm.org/D95029
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
//===-- CSKYAsmBackend.h - CSKY Assembler Backend -------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_CSKY_MCTARGETDESC_CSKYASMBACKEND_H
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#define LLVM_LIB_TARGET_CSKY_MCTARGETDESC_CSKYASMBACKEND_H
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#include "MCTargetDesc/CSKYFixupKinds.h"
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#include "llvm/MC/MCAsmBackend.h"
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#include "llvm/MC/MCTargetOptions.h"
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namespace llvm {
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class CSKYAsmBackend : public MCAsmBackend {
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public:
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CSKYAsmBackend(const MCSubtargetInfo &STI, const MCTargetOptions &OP)
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: MCAsmBackend(support::little) {}
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unsigned int getNumFixupKinds() const override {
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return CSKY::NumTargetFixupKinds;
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}
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void applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
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const MCValue &Target, MutableArrayRef<char> Data,
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uint64_t Value, bool IsResolved,
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const MCSubtargetInfo *STI) const override;
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const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const override;
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bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value,
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const MCRelaxableFragment *DF,
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const MCAsmLayout &Layout) const override;
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void relaxInstruction(MCInst &Inst,
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const MCSubtargetInfo &STI) const override;
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bool writeNopData(raw_ostream &OS, uint64_t Count) const override;
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std::unique_ptr<MCObjectTargetWriter>
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createObjectTargetWriter() const override;
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};
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} // namespace llvm
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#endif // LLVM_LIB_TARGET_CSKY_MCTARGETDESC_CSKYASMBACKEND_H
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