bpf: Refactor x86 JIT into helpers

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Refactor x86 JITing of LDX, STX, CALL instructions into separate helper
functions.  No functional changes in LDX and STX helpers.  There is a minor
change in CALL helper. It will populate target address correctly on the first
pass of JIT instead of second pass. That won't reduce total number of JIT
passes though.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20191114185720.1641606-3-ast@kernel.org

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Alexei Starovoitov 2019-11-14 10:57:02 -08:00 • committed by Daniel Borkmann

parent c3d6324f84

commit 3b2744e665

1 changed files with 98 additions and 54 deletions

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arch/x86/net/bpf_jit_comp.c

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