109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
//===-- RISCVELFStreamer.h - RISCV ELF Target Streamer ---------*- C++ -*--===//
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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_RISCV_RISCVELFSTREAMER_H
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#define LLVM_LIB_TARGET_RISCV_RISCVELFSTREAMER_H
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#include "RISCVTargetStreamer.h"
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#include "llvm/MC/MCELFStreamer.h"
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namespace llvm {
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class RISCVTargetELFStreamer : public RISCVTargetStreamer {
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private:
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enum class AttributeType { Hidden, Numeric, Text, NumericAndText };
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struct AttributeItem {
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AttributeType Type;
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unsigned Tag;
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unsigned IntValue;
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std::string StringValue;
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};
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StringRef CurrentVendor;
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SmallVector<AttributeItem, 64> Contents;
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MCSection *AttributeSection = nullptr;
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AttributeItem *getAttributeItem(unsigned Attribute) {
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for (size_t i = 0; i < Contents.size(); ++i)
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if (Contents[i].Tag == Attribute)
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return &Contents[i];
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return nullptr;
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}
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void setAttributeItem(unsigned Attribute, unsigned Value,
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bool OverwriteExisting) {
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// Look for existing attribute item.
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if (AttributeItem *Item = getAttributeItem(Attribute)) {
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if (!OverwriteExisting)
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return;
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Item->Type = AttributeType::Numeric;
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Item->IntValue = Value;
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return;
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}
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// Create new attribute item.
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Contents.push_back({AttributeType::Numeric, Attribute, Value, ""});
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}
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void setAttributeItem(unsigned Attribute, StringRef Value,
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bool OverwriteExisting) {
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// Look for existing attribute item.
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if (AttributeItem *Item = getAttributeItem(Attribute)) {
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if (!OverwriteExisting)
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return;
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Item->Type = AttributeType::Text;
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Item->StringValue = std::string(Value);
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return;
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}
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// Create new attribute item.
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Contents.push_back({AttributeType::Text, Attribute, 0, std::string(Value)});
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}
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void setAttributeItems(unsigned Attribute, unsigned IntValue,
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StringRef StringValue, bool OverwriteExisting) {
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// Look for existing attribute item.
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if (AttributeItem *Item = getAttributeItem(Attribute)) {
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if (!OverwriteExisting)
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return;
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Item->Type = AttributeType::NumericAndText;
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Item->IntValue = IntValue;
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Item->StringValue = std::string(StringValue);
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return;
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}
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// Create new attribute item.
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Contents.push_back({AttributeType::NumericAndText, Attribute, IntValue,
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std::string(StringValue)});
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}
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void emitAttribute(unsigned Attribute, unsigned Value) override;
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void emitTextAttribute(unsigned Attribute, StringRef String) override;
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void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
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StringRef StringValue) override;
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void finishAttributeSection() override;
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size_t calculateContentSize() const;
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public:
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MCELFStreamer &getStreamer();
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RISCVTargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI);
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void emitDirectiveOptionPush() override;
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void emitDirectiveOptionPop() override;
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void emitDirectiveOptionPIC() override;
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void emitDirectiveOptionNoPIC() override;
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void emitDirectiveOptionRVC() override;
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void emitDirectiveOptionNoRVC() override;
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void emitDirectiveOptionRelax() override;
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void emitDirectiveOptionNoRelax() override;
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};
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}
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#endif
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