<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/110119>110119</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [libc] add `mremap` syscall wrapper
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            good first issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          SchrodingerZhu
      </td>
    </tr>
</table>

<pre>
    We need to create a `mremap` wrapper for linux targets, see https://man7.org/linux/man-pages/man2/mremap.2.html.

This requires:

- implement the entrypoint header similar to `libc/src/sys/mman/mmap.h`
   - modify `libc/src/sys/mman/CMakeLists.txt` accordingly
- implement the entrypoint similar to `libc/src/sys/mman/linux/mmap.cpp`
   - modify `libc/src/sys/mman/linux/CMakeLists.txt` accordingly
- add in the header spec
  - modify `functions` section in `libc/newhdrgen/yaml/sys/mman.yaml`
  - modify `SysMMan` section in `libc/spec/linux.td`
- add in test
  - similar to `libc/test/src/sys/mman/linux/mmap_test.cpp`
  - modify `libc/test/src/sys/mman/linux/CMakeLists.txt` accordingly

-----------------------------------------------------
Misc:
- How to build libc for dev: https://libc.llvm.org/full_host_build.html
- Code style and dev guide: https://libc.llvm.org/dev/index.html


</pre>
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