system_call_emulator.h

//
// Created by moiz on 2/1/20.
//

#ifndef ASSEMBLER_TEST_SYSTEM_CALL_EMULATOR_H
#define ASSEMBLER_TEST_SYSTEM_CALL_EMULATOR_H

#include <memory>
#include "memory_wrapper.h"

namespace RISCV_EMULATOR {

struct Riscv32NewlibStat {
  uint16_t st_dev;  // 0
  uint16_t st_ino;  // 2
  uint32_t st_mode;  // 4
  uint16_t st_nlink;  // 8
  uint16_t st_uid;  // 10
  uint16_t st_gid;  // 12
  uint16_t st_rdev;  // 14
  int32_t st_size;  // 16
  int32_t st_spare0; // 20
  int64_t st_atim; // 24
  int32_t st_spare1; // 32
  int32_t st_spare1_2; // 36
  int64_t st_mtim; // 40
  int32_t st_spare2; // 48
  int32_t st_spare2_2; // 52
  int64_t st_ctim; // 56
  int32_t st_spare3; // 60
  int32_t st_blksize; // 68
  int32_t st_blocks; // 72
  int32_t st_spare4[2]; // 76
};

void ShowGuestStat(const Riscv32NewlibStat &guest_stat);

void ShowHostStat(const struct stat &host_stat);

void ConvGuestStatToHostStat(const Riscv32NewlibStat &guest_stat, struct stat *host_stat);

void ConvHostStatToGuestStat(const struct stat &host_stat, Riscv32NewlibStat *guest_stat);

constexpr size_t kMaxBufferSize = UINT16_MAX;

size_t MemoryWrapperStrlen(const MemoryWrapper &mem, size_t address, size_t max = kMaxBufferSize);

char *MemoryWrapperCopy(const MemoryWrapper &mem, size_t address, size_t length, char *dst);

std::pair<bool, bool> SystemCallEmulation(std::shared_ptr<MemoryWrapper> memory, uint64_t *reg, const uint64_t top,
                                          uint64_t *break_address, bool debug = false);

} // namespace RISCV_EMULATOR

#endif //ASSEMBLER_TEST_SYSTEM_CALL_EMULATOR_H