trace_instruction.h

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/*
 *    Copyright 2023 The ChampSim Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef TRACE_INSTRUCTION_H
#define TRACE_INSTRUCTION_H
 
#include <limits>
 
// special registers that help us identify branches
namespace champsim
{
constexpr char REG_STACK_POINTER = 6;
constexpr char REG_FLAGS = 25;
constexpr char REG_INSTRUCTION_POINTER = 26;
} // namespace champsim
 
// instruction format
constexpr std::size_t NUM_INSTR_DESTINATIONS_SPARC = 4;
constexpr std::size_t NUM_INSTR_DESTINATIONS = 2;
constexpr std::size_t NUM_INSTR_SOURCES = 4;
 
struct input_instr {
  // instruction pointer or PC (Program Counter)
  unsigned long long ip;
 
  // branch info
  unsigned char is_branch;
  unsigned char branch_taken;
 
  unsigned char destination_registers[NUM_INSTR_DESTINATIONS]; // output registers
  unsigned char source_registers[NUM_INSTR_SOURCES];           // input registers
 
  unsigned long long destination_memory[NUM_INSTR_DESTINATIONS]; // output memory
  unsigned long long source_memory[NUM_INSTR_SOURCES];           // input memory
};
 
struct cloudsuite_instr {
  // instruction pointer or PC (Program Counter)
  unsigned long long ip;
 
  // branch info
  unsigned char is_branch;
  unsigned char branch_taken;
 
  unsigned char destination_registers[NUM_INSTR_DESTINATIONS_SPARC]; // output registers
  unsigned char source_registers[NUM_INSTR_SOURCES];                 // input registers
 
  unsigned long long destination_memory[NUM_INSTR_DESTINATIONS_SPARC]; // output memory
  unsigned long long source_memory[NUM_INSTR_SOURCES];                 // input memory
 
  unsigned char asid[2];
};
 
#endif