From patchwork Mon Jun 10 23:08:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexei Starovoitov X-Patchwork-Id: 13692540 X-Patchwork-Delegate: bpf@iogearbox.net Received: from mail-pf1-f169.google.com (mail-pf1-f169.google.com [209.85.210.169]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9407C1514DE for ; Mon, 10 Jun 2024 23:09:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.169 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718060948; cv=none; b=NWXT6mNnzJFkT2L7TxBFYOJ35K/ytwKxdPxiL908SEo49G7n1+PfJY0HHMumVLyA/QYFHxeWcrAynx4ellXyWWB8TLWoTL4UlYp37izkpiu1gcJmGk73Y2gwWKGi7Rf/PM9/1gKNctC0whcI+mDr9vW5bUY1CYCmOQhdGpFNTLM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718060948; c=relaxed/simple; bh=Gm5gtUs7ESel2//jbT0TijXe29JcPEixmsWoeLbvHjg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=C1nabHqPriajLEly8pR6cKPovIHKLriois1TYc3RDa5qoGdbQDrqBzqe2IbR6vnLd3fQC6OY5fi32DWtSlRX7Jb0wpakSgUg/b93rgnxrE6NZdGGutJEcW7xZF8cJ2KPx1Qr4ahzVpq9wxDZOYTmpZpPPBs6eKKkRMf3hALC4Nk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=HOJJqOR9; arc=none smtp.client-ip=209.85.210.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="HOJJqOR9" Received: by mail-pf1-f169.google.com with SMTP id d2e1a72fcca58-70436ac872aso490549b3a.1 for ; Mon, 10 Jun 2024 16:09:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1718060946; x=1718665746; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Us1aqdKDZ5u/C9Le8gUMjYEff67H98STOGSj9ePhdrk=; b=HOJJqOR9TnXBsQrIViQn0JPmcRxEWaV33PEJwTiCHRtO4jkfKWROSuOt0XF5RaM7yf MUnv0Nme7koRlyoBJLo75CGKePdEyVzxdgE/AUadPxHmeU5zT4qneivJb5eoUmHD6lt7 aFZe7OiwuO14RaEHHQbI4bwbUm1D/70INHbVOcn9cipIVclFpwZd8lDVLBBy7Wx5GI5Q 90RpcRZjvX2ewPfk8XUT629t1CZFSnRrHzvFVoZ7Htf4pmRubulzK4AbDLVD715osu5b /MqNVukkkm/A5rk/8D+aUWaI4r5XO3c4qLteTLmWOcgKuvrI6g6TVF8f41ODu04w4eDy 2A2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718060946; x=1718665746; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Us1aqdKDZ5u/C9Le8gUMjYEff67H98STOGSj9ePhdrk=; b=pXgBdTU2V8SAU0uh7b/Rm87NB8G2EG78xUOCsRz4B7EMNAJvjx9MDdvwbU4RSaf+bK c7U/QiZuuk3IgkMhUDyNV9Y/YRHFFo2ValiIsH/WHtxF+CRr2BwrzcpTuK960jM1Ukf3 swWVpADf/abI95cDWjtKa86M2Zic4Wm9kHSIyHorKQmK9q9vbeaVlhPRuOzvDFiVWmiw efmGuJj5kF4WmwmRWYk+0LrjR4UuabwcCBq02eSK2cwhtk6PZI7efgYIGsNBxF6frjpb zk3zHnRizPAjnwyhs6FvBOoH97LJkWLIQx0iat8xeHqtyyX7b0Zn4VWNN+cMJIX28TxV uhuA== X-Gm-Message-State: AOJu0Yz13F4DGMoyl/NDznJlt3Sq4a4d2H9JVqzh+uC9X//bYDnQC7Qx JBTxg1dfp0p0mUOPgKALYgPw8tbLoeSbaq/LxngEBdN9SZbq8h/GRWsJsA== X-Google-Smtp-Source: AGHT+IEhTdI0vWSWc4npDBTdbwE7TgT/OKNsXY7gD7WOyoDQQodTMBoFskLhlWOeRfIhFO0eEEFGCA== X-Received: by 2002:a05:6a21:999e:b0:1b4:efbb:d1e1 with SMTP id adf61e73a8af0-1b4efbbd2e4mr10985552637.33.1718060946082; Mon, 10 Jun 2024 16:09:06 -0700 (PDT) Received: from localhost.localdomain ([2620:10d:c090:400::5:cfaa]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-704236597e8sm4681908b3a.141.2024.06.10.16.09.04 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 10 Jun 2024 16:09:05 -0700 (PDT) From: Alexei Starovoitov To: bpf@vger.kernel.org Cc: daniel@iogearbox.net, andrii@kernel.org, martin.lau@kernel.org, memxor@gmail.com, eddyz87@gmail.com, kernel-team@fb.com Subject: [PATCH v2 bpf-next 3/4] bpf: Support can_loop/cond_break on big endian Date: Mon, 10 Jun 2024 16:08:48 -0700 Message-Id: <20240610230849.80820-4-alexei.starovoitov@gmail.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20240610230849.80820-1-alexei.starovoitov@gmail.com> References: <20240610230849.80820-1-alexei.starovoitov@gmail.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: bpf@iogearbox.net From: Alexei Starovoitov Add big endian support for can_loop/cond_break macros. Acked-by: Yonghong Song Signed-off-by: Alexei Starovoitov --- .../testing/selftests/bpf/bpf_experimental.h | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h index 3d9e4b8c6b81..82b73c37b50b 100644 --- a/tools/testing/selftests/bpf/bpf_experimental.h +++ b/tools/testing/selftests/bpf/bpf_experimental.h @@ -351,6 +351,7 @@ l_true: \ l_continue:; \ }) #else +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ #define can_loop \ ({ __label__ l_break, l_continue; \ bool ret = true; \ @@ -376,6 +377,33 @@ l_true: \ l_break: break; \ l_continue:; \ }) +#else +#define can_loop \ + ({ __label__ l_break, l_continue; \ + bool ret = true; \ + asm volatile goto("1:.byte 0xe5; \ + .byte 0; \ + .long (((%l[l_break] - 1b - 8) / 8) & 0xffff) << 16; \ + .short 0" \ + :::: l_break); \ + goto l_continue; \ + l_break: ret = false; \ + l_continue:; \ + ret; \ + }) + +#define cond_break \ + ({ __label__ l_break, l_continue; \ + asm volatile goto("1:.byte 0xe5; \ + .byte 0; \ + .long (((%l[l_break] - 1b - 8) / 8) & 0xffff) << 16; \ + .short 0" \ + :::: l_break); \ + goto l_continue; \ + l_break: break; \ + l_continue:; \ + }) +#endif #endif #ifndef bpf_nop_mov