Commit a71c0b09 authored by Artem Savkov's avatar Artem Savkov Committed by Michael Ellerman
Browse files

powerpc64/bpf: jit support for unconditional byte swap 



Add jit support for unconditional byte swap. Tested using BSWAP tests
from test_bpf module.

Signed-off-by: default avatarArtem Savkov <asavkov@redhat.com>
Reviewed-by: default avatarHari Bathini <hbathini@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240517075650.248801-3-asavkov@redhat.com
parent 3c086ce2

arch/powerpc/net/bpf_jit_comp64.c

+2 −1
Original line number Diff line number Diff line
@@ -699,11 +699,12 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, u32 *fimage, struct code 
		 */

		case BPF_ALU | BPF_END | BPF_FROM_LE:

		case BPF_ALU | BPF_END | BPF_FROM_BE:

		case BPF_ALU64 | BPF_END | BPF_FROM_LE:

#ifdef __BIG_ENDIAN__

			if (BPF_SRC(code) == BPF_FROM_BE)

				goto emit_clear;

#else /* !__BIG_ENDIAN__ */

			if (BPF_SRC(code) == BPF_FROM_LE)

			if (BPF_CLASS(code) == BPF_ALU && BPF_SRC(code) == BPF_FROM_LE)

				goto emit_clear;

#endif

			switch (imm) {