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8f90edde69
Summary: Add a new method which tries to compute the target address referenced by an operand. This patch supports x86_64 RIP-relative addressing for now. It is necessary to print referenced symbol names in llvm-objdump. Reviewers: andreadb, MaskRay, grosbach, jgalenson, craig.topper Reviewed By: MaskRay, craig.topper Subscribers: bcain, rupprecht, jhenderson, hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D63847 llvm-svn: 366987
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
//===- MCInstrAnalysis.cpp - InstrDesc target hooks -----------------------===//
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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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#include "llvm/MC/MCInstrAnalysis.h"
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#include "llvm/ADT/APInt.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstrDesc.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include <cstdint>
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using namespace llvm;
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bool MCInstrAnalysis::clearsSuperRegisters(const MCRegisterInfo &MRI,
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const MCInst &Inst,
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APInt &Writes) const {
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Writes.clearAllBits();
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return false;
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}
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bool MCInstrAnalysis::evaluateBranch(const MCInst &Inst, uint64_t Addr,
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uint64_t Size, uint64_t &Target) const {
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if (Inst.getNumOperands() == 0 ||
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Info->get(Inst.getOpcode()).OpInfo[0].OperandType != MCOI::OPERAND_PCREL)
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return false;
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int64_t Imm = Inst.getOperand(0).getImm();
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Target = Addr+Size+Imm;
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return true;
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}
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Optional<uint64_t>
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MCInstrAnalysis::evaluateMemoryOperandAddress(const MCInst &Inst, uint64_t Addr,
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uint64_t Size) const {
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return None;
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}
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