From patchwork Thu Aug 24 09:50:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Pu Lehui X-Patchwork-Id: 13363352 X-Patchwork-Delegate: bpf@iogearbox.net Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 86CCB1864; Thu, 24 Aug 2023 01:45:58 +0000 (UTC) Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B10610D0; Wed, 23 Aug 2023 18:45:56 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4RWQsD1XVnz4f3pFy; Thu, 24 Aug 2023 09:45:52 +0800 (CST) Received: from ultra.huawei.com (unknown [10.90.53.71]) by APP4 (Coremail) with SMTP id gCh0CgB3TaBNtuZk2HbCBQ--.33536S8; Thu, 24 Aug 2023 09:45:53 +0800 (CST) From: Pu Lehui To: linux-riscv@lists.infradead.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Yonghong Song , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Palmer Dabbelt , Xu Kuohai , Puranjay Mohan , Pu Lehui , Pu Lehui Subject: [PATCH bpf-next v2 6/7] riscv, bpf: Support unconditional bswap insn Date: Thu, 24 Aug 2023 09:50:00 +0000 Message-Id: <20230824095001.3408573-7-pulehui@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230824095001.3408573-1-pulehui@huaweicloud.com> References: <20230824095001.3408573-1-pulehui@huaweicloud.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: gCh0CgB3TaBNtuZk2HbCBQ--.33536S8 X-Coremail-Antispam: 1UD129KBjvdXoWrKF1kZry8Xw1xAF13Ar1xGrg_yoWfXrg_Cr y8JFWIqw45JF1Iqr4UuF4ruryqkw4fKFyrZF1v9rWjk3Z8Was5ZryvyFyavryxZryrtrZ8 Zwn3JaySvw42gjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb9xFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M280x2IEY4vEnII2IxkI6r1a6r45M28IrcIa0xkI8V A2jI8067AKxVWUAVCq3wA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJ M28CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2I x0cI8IcVCY1x0267AKxVWxJr0_GcWl84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vE x4A2jsIEc7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2 IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4U McvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I64 8v4I1lFIxGxcIEc7CjxVA2Y2ka0xkIwI1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Y z7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zV AF1VAY17CE14v26r4a6rW5MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JFI_Gr1l IxAIcVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r 1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJbIY CTnIWIevJa73UjIFyTuYvjTRKfOwUUUUU X-CM-SenderInfo: psxovxtxl6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected X-Spam-Status: No, score=0.1 required=5.0 tests=BAYES_00,DATE_IN_FUTURE_06_12, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: bpf@iogearbox.net From: Pu Lehui 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: Pu Lehui Acked-by: Björn Töpel --- arch/riscv/net/bpf_jit_comp64.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/net/bpf_jit_comp64.c b/arch/riscv/net/bpf_jit_comp64.c index ba4535ac194f..8423f4ddf8f5 100644 --- a/arch/riscv/net/bpf_jit_comp64.c +++ b/arch/riscv/net/bpf_jit_comp64.c @@ -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);