From patchwork Fri Jan 25 00:10:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiong Wang X-Patchwork-Id: 1030739 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=netronome.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=netronome-com.20150623.gappssmtp.com header.i=@netronome-com.20150623.gappssmtp.com header.b="xYxePU2z"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43lzwc4xsDz9s55 for ; Fri, 25 Jan 2019 11:12:00 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728275AbfAYAL7 (ORCPT ); Thu, 24 Jan 2019 19:11:59 -0500 Received: from mail-wr1-f68.google.com ([209.85.221.68]:39592 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728209AbfAYAL6 (ORCPT ); Thu, 24 Jan 2019 19:11:58 -0500 Received: by mail-wr1-f68.google.com with SMTP id t27so8440887wra.6 for ; Thu, 24 Jan 2019 16:11:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netronome-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=v9MyCkZWj+L/Jok6mfhN+dWDp/cT5qxxTiU3XYAYAd0=; b=xYxePU2zklPvLqsTsqbMXY5f/eUZfGYQ4M+4KOywV8KkeuBNKwBWGELcw7ZOoNhMrm ZYWWn5LgzBZ3E6YSFH3ODjXO6Nfwwo5rR7orLPFj740J0sKs7llJ1oN9npUxjnXgpdZL lyxlrU6DFTUTeRrFn3q8hEbm2Z+pknRzyaOwZgF1Ve99B1++yTamT04ERQPeeB5iZiVC J5HiPpE3ifmZOpK7tvClY7L9h43N7vbxmgIn9gFKVAixGu4kwkbqD9VP8fP4Tgx6II4A MaplgEKTWWjuAcHBV0vp5q79IaLnGSQ9yQKCOb/BjAz23di6w/x0wJPcbKJWMm6NFASi 531w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=v9MyCkZWj+L/Jok6mfhN+dWDp/cT5qxxTiU3XYAYAd0=; b=SG0mZXWu39Rj/7c1I2igyjPfFTFnTdvuBL+WUmvfvq6ZSt35QNSQ5G+9pqmHHLr/11 5GSrbjKEWD1R2EutYgmzPck8f0AJnTAi83X1VjMUful7bz+nAJvf3wgjGpodvk+ibvKx 3xOIO4siUaeIMgyx2Ei1xqOvwrC2s3fuHxNcXvjNyQ3DMtm1E6JKA3qzWr431HgHWl3i vFilEHYFk7e8hKt8A4lvonAi0UibowNeHxdkGaZqAzBiq5fKzfOc4zdvRLpYseDTFCo9 s+mGogFvZ7VjVL/hw05TAvDzls0zpB27sP4l5dQ1zeBCIC7N87I16BaWaObcw8L4ZS4p hSuw== X-Gm-Message-State: AJcUukexg2swijg8QtlsW7/TRi4aVuv+v1R0joQQuSkc4uA2lbjt5Q88 yBY2BPJlPXFmegiVaImnubqcrw== X-Google-Smtp-Source: ALg8bN5mx5FCsXW/dJbCs40X8OyyI2yIDwvbMis4uIJoSXdqb1cCXeTeLSTUnqhZDcl7jN935bZjXA== X-Received: by 2002:adf:a14d:: with SMTP id r13mr8800302wrr.169.1548375116954; Thu, 24 Jan 2019 16:11:56 -0800 (PST) Received: from cbtest28.netronome.com ([217.38.71.146]) by smtp.gmail.com with ESMTPSA id y138sm71273216wmc.16.2019.01.24.16.11.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 24 Jan 2019 16:11:56 -0800 (PST) From: Jiong Wang To: ast@kernel.org, daniel@iogearbox.net Cc: netdev@vger.kernel.org, oss-drivers@netronome.com, Jiong Wang , Zi Shen Lim Subject: [PATCH bpf-next v3 10/16] arm64: bpf: implement jitting of JMP32 Date: Thu, 24 Jan 2019 19:10:22 -0500 Message-Id: <1548375028-8308-11-git-send-email-jiong.wang@netronome.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1548375028-8308-1-git-send-email-jiong.wang@netronome.com> References: <1548375028-8308-1-git-send-email-jiong.wang@netronome.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch implements code-gen for new JMP32 instructions on arm64. Cc: Daniel Borkmann Cc: Alexei Starovoitov Cc: Zi Shen Lim Signed-off-by: Jiong Wang --- arch/arm64/net/bpf_jit_comp.c | 37 ++++++++++++++++++++++++++++++------- 1 file changed, 30 insertions(+), 7 deletions(-) diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 1542df0..aaddc02 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -362,7 +362,8 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, const s16 off = insn->off; const s32 imm = insn->imm; const int i = insn - ctx->prog->insnsi; - const bool is64 = BPF_CLASS(code) == BPF_ALU64; + const bool is64 = BPF_CLASS(code) == BPF_ALU64 || + BPF_CLASS(code) == BPF_JMP; const bool isdw = BPF_SIZE(code) == BPF_DW; u8 jmp_cond; s32 jmp_offset; @@ -559,7 +560,17 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, case BPF_JMP | BPF_JSLT | BPF_X: case BPF_JMP | BPF_JSGE | BPF_X: case BPF_JMP | BPF_JSLE | BPF_X: - emit(A64_CMP(1, dst, src), ctx); + case BPF_JMP32 | BPF_JEQ | BPF_X: + case BPF_JMP32 | BPF_JGT | BPF_X: + case BPF_JMP32 | BPF_JLT | BPF_X: + case BPF_JMP32 | BPF_JGE | BPF_X: + case BPF_JMP32 | BPF_JLE | BPF_X: + case BPF_JMP32 | BPF_JNE | BPF_X: + case BPF_JMP32 | BPF_JSGT | BPF_X: + case BPF_JMP32 | BPF_JSLT | BPF_X: + case BPF_JMP32 | BPF_JSGE | BPF_X: + case BPF_JMP32 | BPF_JSLE | BPF_X: + emit(A64_CMP(is64, dst, src), ctx); emit_cond_jmp: jmp_offset = bpf2a64_offset(i + off, i, ctx); check_imm19(jmp_offset); @@ -601,7 +612,8 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, emit(A64_B_(jmp_cond, jmp_offset), ctx); break; case BPF_JMP | BPF_JSET | BPF_X: - emit(A64_TST(1, dst, src), ctx); + case BPF_JMP32 | BPF_JSET | BPF_X: + emit(A64_TST(is64, dst, src), ctx); goto emit_cond_jmp; /* IF (dst COND imm) JUMP off */ case BPF_JMP | BPF_JEQ | BPF_K: @@ -614,12 +626,23 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, case BPF_JMP | BPF_JSLT | BPF_K: case BPF_JMP | BPF_JSGE | BPF_K: case BPF_JMP | BPF_JSLE | BPF_K: - emit_a64_mov_i(1, tmp, imm, ctx); - emit(A64_CMP(1, dst, tmp), ctx); + case BPF_JMP32 | BPF_JEQ | BPF_K: + case BPF_JMP32 | BPF_JGT | BPF_K: + case BPF_JMP32 | BPF_JLT | BPF_K: + case BPF_JMP32 | BPF_JGE | BPF_K: + case BPF_JMP32 | BPF_JLE | BPF_K: + case BPF_JMP32 | BPF_JNE | BPF_K: + case BPF_JMP32 | BPF_JSGT | BPF_K: + case BPF_JMP32 | BPF_JSLT | BPF_K: + case BPF_JMP32 | BPF_JSGE | BPF_K: + case BPF_JMP32 | BPF_JSLE | BPF_K: + emit_a64_mov_i(is64, tmp, imm, ctx); + emit(A64_CMP(is64, dst, tmp), ctx); goto emit_cond_jmp; case BPF_JMP | BPF_JSET | BPF_K: - emit_a64_mov_i(1, tmp, imm, ctx); - emit(A64_TST(1, dst, tmp), ctx); + case BPF_JMP32 | BPF_JSET | BPF_K: + emit_a64_mov_i(is64, tmp, imm, ctx); + emit(A64_TST(is64, dst, tmp), ctx); goto emit_cond_jmp; /* function call */ case BPF_JMP | BPF_CALL: