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LoongArch: BPF: Support unconditional bswap instructions

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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 <hengqi.chen@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Hengqi Chen 2023-11-08 14:12:16 +08:00 committed by Huacai Chen
parent f48012f161
commit 4ebf9216e7
1 changed files with 1 additions and 0 deletions
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arch/loongarch/net/bpf_jit.c
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@ -731,6 +731,7 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, bool ext
break; break;
case BPF_ALU | BPF_END | BPF_FROM_BE: case BPF_ALU | BPF_END | BPF_FROM_BE:
case BPF_ALU64 | BPF_END | BPF_FROM_LE:
switch (imm) { switch (imm) {
case 16: case 16:
emit_insn(ctx, revb2h, dst, dst); emit_insn(ctx, revb2h, dst, dst);