This series adds an eBPF JIT for sparc64.
Sparc32 keeps having it's cBPF JIT after these changes.
Thanks to Daniel and Alexei for their invaluable feedback and review.
Signed-off-by: David S. Miller <da...@davemloft.net>
---
since v1:
-- add tail call support
-- fix MOD generation to not emit the same constant load several times
-- flush icache over entire buffer properly
-- do STACK_BIAS adjustment of FP once in prologue
-- remove useless sanity checks
-- generate patches with -M -C
since RFC:
-- rework register allocation so that we don't have to emit move
instructions to get the arguments into place for calls
-- allow FP as source for 64-bit ALU move operations
-- don't emit NOP instructions in prologue, instead do multiple
passes so that all the branch offsets settle down
-- remove unnecessary checks on imm64 loads that verifier does
-- consistently use bpf2sparc[] instead of direct register references
