diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c index 7c0d129b82a4..169ff8b3915e 100644 --- a/arch/loongarch/net/bpf_jit.c +++ b/arch/loongarch/net/bpf_jit.c @@ -588,20 +588,36 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, bool ext /* dst = dst % src */ case BPF_ALU | BPF_MOD | BPF_X: case BPF_ALU64 | BPF_MOD | BPF_X: - emit_zext_32(ctx, dst, is32); - move_reg(ctx, t1, src); - emit_zext_32(ctx, t1, is32); - emit_insn(ctx, moddu, dst, dst, t1); - emit_zext_32(ctx, dst, is32); + if (!off) { + emit_zext_32(ctx, dst, is32); + move_reg(ctx, t1, src); + emit_zext_32(ctx, t1, is32); + emit_insn(ctx, moddu, dst, dst, t1); + emit_zext_32(ctx, dst, is32); + } else { + emit_sext_32(ctx, dst, is32); + move_reg(ctx, t1, src); + emit_sext_32(ctx, t1, is32); + emit_insn(ctx, modd, dst, dst, t1); + emit_sext_32(ctx, dst, is32); + } break; /* dst = dst % imm */ case BPF_ALU | BPF_MOD | BPF_K: case BPF_ALU64 | BPF_MOD | BPF_K: - move_imm(ctx, t1, imm, is32); - emit_zext_32(ctx, dst, is32); - emit_insn(ctx, moddu, dst, dst, t1); - emit_zext_32(ctx, dst, is32); + if (!off) { + move_imm(ctx, t1, imm, is32); + emit_zext_32(ctx, dst, is32); + emit_insn(ctx, moddu, dst, dst, t1); + emit_zext_32(ctx, dst, is32); + } else { + move_imm(ctx, t1, imm, false); + emit_sext_32(ctx, t1, is32); + emit_sext_32(ctx, dst, is32); + emit_insn(ctx, modd, dst, dst, t1); + emit_sext_32(ctx, dst, is32); + } break; /* dst = -dst */