- Tweak linker script
Ensure that all read only sections end up in one segment, and
everything else in other segments. Discard .eh_frame, .hash and
.gnu.hash since they are unused.
- Don't create invalid string slices in stdout/stderr on Solana
- Report exceeded stack size as a warning if dynamic frames are off
- Native support for signed division in SBF
Adds BPF_SDIV, which is enabled only for the SBF subtarget.
- Introduce dynamic stack frames and the SBFv2 flag
Dynamic stack frames are currently opt-in and enabled setting
cpu=sbfv2. When sbfv2 is used, ELF files are flagged with
e_flags=EF_SBF_V2 so the runtime can detect it and react
accordingly.
(cherry picked from commit 6b611e1c52)
Co-authored-by: Dmitri Makarov <dmakarov@alumni.stanford.edu>
32dea4427b