106c3fb27SDimitry Andric //===-- RISCVMCExpr.h - RISC-V specific MC expression classes----*- C++ -*-===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric // 906c3fb27SDimitry Andric // This file describes RISC-V specific MCExprs, used for modifiers like 100b57cec5SDimitry Andric // "%hi" or "%lo" etc., 110b57cec5SDimitry Andric // 120b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 130b57cec5SDimitry Andric 140b57cec5SDimitry Andric #ifndef LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVMCEXPR_H 150b57cec5SDimitry Andric #define LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVMCEXPR_H 160b57cec5SDimitry Andric 170b57cec5SDimitry Andric #include "llvm/MC/MCExpr.h" 180b57cec5SDimitry Andric 190b57cec5SDimitry Andric namespace llvm { 200b57cec5SDimitry Andric 210b57cec5SDimitry Andric class StringRef; 225ffd83dbSDimitry Andric 230b57cec5SDimitry Andric class RISCVMCExpr : public MCTargetExpr { 240b57cec5SDimitry Andric public: 250b57cec5SDimitry Andric enum VariantKind { 260b57cec5SDimitry Andric VK_RISCV_None, 270b57cec5SDimitry Andric VK_RISCV_LO, 280b57cec5SDimitry Andric VK_RISCV_HI, 290b57cec5SDimitry Andric VK_RISCV_PCREL_LO, 300b57cec5SDimitry Andric VK_RISCV_PCREL_HI, 310b57cec5SDimitry Andric VK_RISCV_GOT_HI, 320b57cec5SDimitry Andric VK_RISCV_TPREL_LO, 330b57cec5SDimitry Andric VK_RISCV_TPREL_HI, 340b57cec5SDimitry Andric VK_RISCV_TPREL_ADD, 350b57cec5SDimitry Andric VK_RISCV_TLS_GOT_HI, 360b57cec5SDimitry Andric VK_RISCV_TLS_GD_HI, 370b57cec5SDimitry Andric VK_RISCV_CALL, 380b57cec5SDimitry Andric VK_RISCV_CALL_PLT, 390b57cec5SDimitry Andric VK_RISCV_32_PCREL, 407a6dacacSDimitry Andric VK_RISCV_TLSDESC_HI, 417a6dacacSDimitry Andric VK_RISCV_TLSDESC_LOAD_LO, 427a6dacacSDimitry Andric VK_RISCV_TLSDESC_ADD_LO, 437a6dacacSDimitry Andric VK_RISCV_TLSDESC_CALL, 44fe6060f1SDimitry Andric VK_RISCV_Invalid // Must be the last item 450b57cec5SDimitry Andric }; 460b57cec5SDimitry Andric 470b57cec5SDimitry Andric private: 480b57cec5SDimitry Andric const MCExpr *Expr; 490b57cec5SDimitry Andric const VariantKind Kind; 500b57cec5SDimitry Andric 510b57cec5SDimitry Andric int64_t evaluateAsInt64(int64_t Value) const; 520b57cec5SDimitry Andric RISCVMCExpr(const MCExpr * Expr,VariantKind Kind)530b57cec5SDimitry Andric explicit RISCVMCExpr(const MCExpr *Expr, VariantKind Kind) 540b57cec5SDimitry Andric : Expr(Expr), Kind(Kind) {} 550b57cec5SDimitry Andric 560b57cec5SDimitry Andric public: 570b57cec5SDimitry Andric static const RISCVMCExpr *create(const MCExpr *Expr, VariantKind Kind, 580b57cec5SDimitry Andric MCContext &Ctx); 590b57cec5SDimitry Andric getKind()600b57cec5SDimitry Andric VariantKind getKind() const { return Kind; } 610b57cec5SDimitry Andric getSubExpr()620b57cec5SDimitry Andric const MCExpr *getSubExpr() const { return Expr; } 630b57cec5SDimitry Andric 640b57cec5SDimitry Andric /// Get the corresponding PC-relative HI fixup that a VK_RISCV_PCREL_LO 6555e4f9d5SDimitry Andric /// points to, and optionally the fragment containing it. 660b57cec5SDimitry Andric /// 670b57cec5SDimitry Andric /// \returns nullptr if this isn't a VK_RISCV_PCREL_LO pointing to a 680b57cec5SDimitry Andric /// known PC-relative HI fixup. 6955e4f9d5SDimitry Andric const MCFixup *getPCRelHiFixup(const MCFragment **DFOut) const; 700b57cec5SDimitry Andric 710b57cec5SDimitry Andric void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override; 72*0fca6ea1SDimitry Andric bool evaluateAsRelocatableImpl(MCValue &Res, const MCAssembler *Asm, 730b57cec5SDimitry Andric const MCFixup *Fixup) const override; 740b57cec5SDimitry Andric void visitUsedExpr(MCStreamer &Streamer) const override; findAssociatedFragment()750b57cec5SDimitry Andric MCFragment *findAssociatedFragment() const override { 760b57cec5SDimitry Andric return getSubExpr()->findAssociatedFragment(); 770b57cec5SDimitry Andric } 780b57cec5SDimitry Andric 790b57cec5SDimitry Andric void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override; 800b57cec5SDimitry Andric 810b57cec5SDimitry Andric bool evaluateAsConstant(int64_t &Res) const; 820b57cec5SDimitry Andric classof(const MCExpr * E)830b57cec5SDimitry Andric static bool classof(const MCExpr *E) { 840b57cec5SDimitry Andric return E->getKind() == MCExpr::Target; 850b57cec5SDimitry Andric } 860b57cec5SDimitry Andric 870b57cec5SDimitry Andric static VariantKind getVariantKindForName(StringRef name); 880b57cec5SDimitry Andric static StringRef getVariantKindName(VariantKind Kind); 890b57cec5SDimitry Andric }; 900b57cec5SDimitry Andric 910b57cec5SDimitry Andric } // end namespace llvm. 920b57cec5SDimitry Andric 930b57cec5SDimitry Andric #endif 94