mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
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 -----------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/MC/MCInstrAnalysis.h"
|
|
|
|
#include "llvm/ADT/APInt.h"
|
|
#include "llvm/MC/MCInst.h"
|
|
#include "llvm/MC/MCInstrDesc.h"
|
|
#include "llvm/MC/MCInstrInfo.h"
|
|
#include <cstdint>
|
|
|
|
using namespace llvm;
|
|
|
|
bool MCInstrAnalysis::clearsSuperRegisters(const MCRegisterInfo &MRI,
|
|
const MCInst &Inst,
|
|
APInt &Writes) const {
|
|
Writes.clearAllBits();
|
|
return false;
|
|
}
|
|
|
|
bool MCInstrAnalysis::evaluateBranch(const MCInst &Inst, uint64_t Addr,
|
|
uint64_t Size, uint64_t &Target) const {
|
|
if (Inst.getNumOperands() == 0 ||
|
|
Info->get(Inst.getOpcode()).OpInfo[0].OperandType != MCOI::OPERAND_PCREL)
|
|
return false;
|
|
|
|
int64_t Imm = Inst.getOperand(0).getImm();
|
|
Target = Addr+Size+Imm;
|
|
return true;
|
|
}
|
|
|
|
Optional<uint64_t>
|
|
MCInstrAnalysis::evaluateMemoryOperandAddress(const MCInst &Inst, uint64_t Addr,
|
|
uint64_t Size) const {
|
|
return None;
|
|
}
|