search for: fropi

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2015 Dec 04
3
[RFC][ARM] Add support for embedded position-independent code (ROPI/RWPI)
...of the writable portion of the executable, for systems with very limited RAM. I have only added support to SelectionDAG, not FastISel, because FastISel is currently disabled for bare-metal targets where these modes would be used. On the clang side, the following command-line options are added: -fropi -frwpi -fropi-lowering -frwpi-lowering The first two enable ROPI and RWPI modes, and the second two enable lowering of static initialisers that are not compatible with ROPI/RWPI. Most users will not need to use the second two options, as they are turned on by default when the -fropi and -frwp...
2019 Jul 01
4
Generating completely position agnostic code
It is wholly self-contained. It's code that has no references to anything beyond a set of pointers passed in as arguments to the function. This piece of code doesn't do any OS work at all. It is purely calling function pointers, doing math and allocating memory. On Mon, Jul 1, 2019 at 12:57 AM Jorg Brown <jorg.brown at gmail.com> wrote: > > Qs for you: > > The code that