Method preWriteBasicBlock

src/ExecBlock/ExecBlockManager.cpp:199–221

}

size_t
ExecBlockManager::preWriteBasicBlock(const std::vector<Patch> &basicBlock) {
  // prereserve the region in the cache and return the instruction that are
  // already in the cache for this basicBlock

  // Locating an approriate cache region
  const Range<rword> bbRange{basicBlock.front().metadata.address,
                             basicBlock.back().metadata.endAddress(),
                             real_addr_t()};
  size_t r = findRegion(bbRange);
  ExecRegion &region = regions[r];

  // detect cached instruction
  size_t patchEnd = basicBlock.size();

  while (patchEnd > 0 && region.instCache.count(getExecRegionKey(
                             basicBlock[patchEnd - 1].metadata.address,
                             basicBlock[patchEnd - 1].metadata.cpuMode)) != 0) {
    patchEnd--;
  }

  return patchEnd;
}

void ExecBlockManager::writeBasicBlock(std::vector<Patch> &&basicBlock,
                                       size_t patchEnd) {