LoongArch: BPF: Support unconditional bswap instructions

Add support for unconditional bswap instruction. Since LoongArch is always little-endian, just treat unconditional bswap the same as big- endian conversion. Signed-off-by: Hengqi Chen <[email protected]> Signed-off-by: Huacai Chen <[email protected]>
raspberrypi · Nov 8, 2023 · 4ebf921 · 4ebf921
1 parent f48012f
commit 4ebf921
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c
@@ -731,6 +731,7 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, bool ext
 		break;
 
 	case BPF_ALU | BPF_END | BPF_FROM_BE:
+	case BPF_ALU64 | BPF_END | BPF_FROM_LE:
 		switch (imm) {
 		case 16:
 			emit_insn(ctx, revb2h, dst, dst);