From nobody Mon Oct 6 06:29:03 2025 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 40A932DA74A; Thu, 24 Jul 2025 14:20:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753366847; cv=none; b=Y6ks3IUS+PWIybiDIU+JyYDa2FPxVfGKPrcoD7bCjKutG5WoxEoQkBcKi/k3ItZ7Wct+MZ1sLA3lThJdNTXNSp7leCvx9fX9Ez0BUGgqIGmRXAsks4ViMniw3tCgRdLeNXF/ExTTHIy0ll6iryiNU9fnhHWdl/IAZqj4i0DdZdw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753366847; c=relaxed/simple; bh=9sE1o2H9iLk7GIYSVg0/Ozv4BjDMssXOQc3gvqthKrc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jV4UuFIJ0C5K97gZNQPjXk7zzNYG/8zIFAf5RM+IKrQ3PLiuxrFFStBF3DuR/fkRpp4xZtoQSESuuXbnoHuY3l2WHtRWwYX7h9T2MWNmexM7FZLLjDwB4CF7UQtlZqzK/HgD4T4dIDv/wI6HAeEB2sBgUy+MiNTAT3KXNk/s5fI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: 58c266bc689911f0b29709d653e92f7d-20250724 X-CTIC-Tags: HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NAME, HR_CC_NO_NAME, HR_CTE_8B HR_CTT_MISS, HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME HR_SJ_DIGIT_LEN, HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM HR_SJ_PHRASE, HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT HR_TO_NO_NAME, IP_TRUSTED, SRC_TRUSTED, DN_TRUSTED, SA_EXISTED SN_EXISTED, SPF_NOPASS, DKIM_NOPASS, DMARC_NOPASS, CIE_BAD CIE_GOOD_SPF, GTI_FG_BS, GTI_RG_INFO, GTI_C_BU, AMN_T1 AMN_GOOD, AMN_C_TI, AMN_C_BU, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.45,REQID:111de354-8d19-4725-8bb5-5613efec203b,IP:10, URL:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTI ON:release,TS:-5 X-CID-INFO: VERSION:1.1.45,REQID:111de354-8d19-4725-8bb5-5613efec203b,IP:10,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:6493067,CLOUDID:fd7addc1a45d51e5ead66785da6070a3,BulkI D:2507242220378DLGWAP0,BulkQuantity:0,Recheck:0,SF:17|19|24|38|44|66|78|81 |82|102,TC:nil,Content:0|50,EDM:-3,IP:-2,URL:0,File:nil,RT:nil,Bulk:nil,QS :nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,A RC:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_FAS,TF_CID_SPAM_FSD,TF_CID_SPAM_FSI,TF_CID_SPAM_SNR X-UUID: 58c266bc689911f0b29709d653e92f7d-20250724 X-User: duanchenghao@kylinos.cn Received: from localhost.localdomain [(223.70.159.239)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA) with ESMTP id 807589078; Thu, 24 Jul 2025 22:20:27 +0800 From: Chenghao Duan To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, yangtiezhu@loongson.cn, hengqi.chen@gmail.com, chenhuacai@kernel.org Cc: martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, kernel@xen0n.name, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, bpf@vger.kernel.org, guodongtai@kylinos.cn, duanchenghao@kylinos.cn, youling.tang@linux.dev, jianghaoran@kylinos.cn, vincent.mc.li@gmail.com, Youling Tang Subject: [PATCH v4 1/5] LoongArch: Add larch_insn_gen_{beq,bne} helpers Date: Thu, 24 Jul 2025 22:19:25 +0800 Message-Id: <20250724141929.691853-2-duanchenghao@kylinos.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250724141929.691853-1-duanchenghao@kylinos.cn> References: <20250724141929.691853-1-duanchenghao@kylinos.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add larch_insn_gen_beq() and larch_insn_gen_bne() helpers which will be used in BPF trampoline implementation. Co-developed-by: George Guo Signed-off-by: George Guo Co-developed-by: Youling Tang Signed-off-by: Youling Tang Signed-off-by: Chenghao Duan Reviewed-by: Hengqi Chen Reviewed-by: Huacai Chen --- arch/loongarch/include/asm/inst.h | 2 ++ arch/loongarch/kernel/inst.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 30 insertions(+) diff --git a/arch/loongarch/include/asm/inst.h b/arch/loongarch/include/asm= /inst.h index 3089785ca..2ae96a35d 100644 --- a/arch/loongarch/include/asm/inst.h +++ b/arch/loongarch/include/asm/inst.h @@ -511,6 +511,8 @@ u32 larch_insn_gen_lu12iw(enum loongarch_gpr rd, int im= m); u32 larch_insn_gen_lu32id(enum loongarch_gpr rd, int imm); u32 larch_insn_gen_lu52id(enum loongarch_gpr rd, enum loongarch_gpr rj, in= t imm); u32 larch_insn_gen_jirl(enum loongarch_gpr rd, enum loongarch_gpr rj, int = imm); +u32 larch_insn_gen_beq(enum loongarch_gpr rd, enum loongarch_gpr rj, int i= mm); +u32 larch_insn_gen_bne(enum loongarch_gpr rd, enum loongarch_gpr rj, int i= mm); =20 static inline bool signed_imm_check(long val, unsigned int bit) { diff --git a/arch/loongarch/kernel/inst.c b/arch/loongarch/kernel/inst.c index 14d7d700b..674e3b322 100644 --- a/arch/loongarch/kernel/inst.c +++ b/arch/loongarch/kernel/inst.c @@ -336,3 +336,31 @@ u32 larch_insn_gen_jirl(enum loongarch_gpr rd, enum lo= ongarch_gpr rj, int imm) =20 return insn.word; } + +u32 larch_insn_gen_beq(enum loongarch_gpr rd, enum loongarch_gpr rj, int i= mm) +{ + union loongarch_instruction insn; + + if ((imm & 3) || imm < -SZ_128K || imm >=3D SZ_128K) { + pr_warn("The generated beq instruction is out of range.\n"); + return INSN_BREAK; + } + + emit_beq(&insn, rj, rd, imm >> 2); + + return insn.word; +} + +u32 larch_insn_gen_bne(enum loongarch_gpr rd, enum loongarch_gpr rj, int i= mm) +{ + union loongarch_instruction insn; + + if ((imm & 3) || imm < -SZ_128K || imm >=3D SZ_128K) { + pr_warn("The generated bne instruction is out of range.\n"); + return INSN_BREAK; + } + + emit_bne(&insn, rj, rd, imm >> 2); + + return insn.word; +} --=20 2.25.1