Commit 83cc63af authored by Pu Lehui's avatar Pu Lehui Committed by Alexei Starovoitov
Browse files

riscv, bpf: Support unconditional bswap insn 



Add support unconditional bswap instruction. Since riscv is always
little-endian, just treat the unconditional scenario the same as
big-endian conversion.

Signed-off-by: default avatarPu Lehui <pulehui@huawei.com>
Acked-by: default avatarBjörn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/r/20230824095001.3408573-7-pulehui@huaweicloud.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 3e18ff4b

arch/riscv/net/bpf_jit_comp64.c

+1 −0
Original line number Diff line number Diff line
@@ -1168,6 +1168,7 @@ int bpf_jit_emit_insn(const struct bpf_insn *insn, struct rv_jit_context *ctx, 
		break;



	case BPF_ALU | BPF_END | BPF_FROM_BE:

	case BPF_ALU64 | BPF_END | BPF_FROM_LE:

		emit_li(RV_REG_T2, 0, ctx);



		emit_andi(RV_REG_T1, rd, 0xff, ctx);