Future Work: __mwrite()

• syscall for atomic/efficient GOT updates by ld.so?

• int __mwrite(void *dst, void *src, size_t nbytes, void *ro_start, size_t ro_size)

  • copy nbytes from src to dst

  • [ro_start, ro_start + ro_size) is expected to be read-only; kernel should do the copy anyway "as if" that area was actually read-write