LibELF: Don't copy read-only data sections

The dynamic loader was mistakenly assuming that there are only two types
of program load headers: text (RX) and data (RW).

Now that we're linking with `-z separate-code`, we will also get some
read-onlydata (R) segments. These can be memory-mapped directly without
making a private per-process copy.

To solve this, the code now instead separates the headers into map/copy
instead of text/data. Writable segments get copied, while non-writable
segments get memory-mapped. :^)

0 files changed, 0 insertions, 0 deletions