From patchwork Thu Feb 15 22:54:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Collin L. Walling" X-Patchwork-Id: 10223879 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6EF4E601D7 for ; Thu, 15 Feb 2018 23:06:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5C93729005 for ; Thu, 15 Feb 2018 23:06:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 514562953D; Thu, 15 Feb 2018 23:06:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7B34929005 for ; Thu, 15 Feb 2018 23:06:55 +0000 (UTC) Received: from localhost ([::1]:41306 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1emScA-0000Kv-KV for patchwork-qemu-devel@patchwork.kernel.org; Thu, 15 Feb 2018 18:06:54 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44095) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1emSaX-00074n-02 for qemu-devel@nongnu.org; Thu, 15 Feb 2018 18:05:19 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1emSaR-0002ue-K0 for qemu-devel@nongnu.org; Thu, 15 Feb 2018 18:05:12 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:42486 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1emSaR-0002sx-Du for qemu-devel@nongnu.org; Thu, 15 Feb 2018 18:05:07 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w1FN0F7L052282 for ; Thu, 15 Feb 2018 18:05:06 -0500 Received: from e33.co.us.ibm.com (e33.co.us.ibm.com [32.97.110.151]) by mx0b-001b2d01.pphosted.com with ESMTP id 2g5ke7g9st-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 15 Feb 2018 18:05:06 -0500 Received: from localhost by e33.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 15 Feb 2018 15:55:03 -0700 Received: from b03cxnp08028.gho.boulder.ibm.com (9.17.130.20) by e33.co.us.ibm.com (192.168.1.133) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 15 Feb 2018 15:55:00 -0700 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w1FMsxZO65994872; Thu, 15 Feb 2018 15:54:59 -0700 Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9362F136044; Thu, 15 Feb 2018 15:54:59 -0700 (MST) Received: from collin-ThinkPad-W541.pok.ibm.com (unknown [9.56.58.50]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP id ECC43136040; Thu, 15 Feb 2018 15:54:58 -0700 (MST) From: "Collin L. Walling" To: qemu-s390x@nongnu.org, qemu-devel@nongnu.org Date: Thu, 15 Feb 2018 17:54:25 -0500 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1518735273-16089-1-git-send-email-walling@linux.vnet.ibm.com> References: <1518735273-16089-1-git-send-email-walling@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18021522-0008-0000-0000-00000954C05E X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008539; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000253; SDB=6.00990277; UDB=6.00502904; IPR=6.00769624; MB=3.00019576; MTD=3.00000008; XFM=3.00000015; UTC=2018-02-15 22:55:02 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18021522-0009-0000-0000-0000460AB286 Message-Id: <1518735273-16089-5-git-send-email-walling@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-02-15_11:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1802150274 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH v6 04/12] s390-ccw: update libc X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: frankja@linux.vnet.ibm.com, thuth@redhat.com, cohuck@redhat.com, david@redhat.com, alifm@linux.vnet.ibm.com, mihajlov@linux.vnet.ibm.com, borntraeger@de.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Moved: memcmp from bootmap.h to libc.h (renamed from _memcmp) strlen from sclp.c to libc.h (renamed from _strlen) Added C standard functions: isdigit Added non C-standard function: uitoa atoui Signed-off-by: Collin L. Walling Acked-by: Christian Borntraeger Reviewed-by: Janosch Frank --- pc-bios/s390-ccw/Makefile | 2 +- pc-bios/s390-ccw/libc.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++ pc-bios/s390-ccw/libc.h | 37 ++++++++++++++++++-- pc-bios/s390-ccw/main.c | 17 +-------- 4 files changed, 126 insertions(+), 19 deletions(-) create mode 100644 pc-bios/s390-ccw/libc.c diff --git a/pc-bios/s390-ccw/Makefile b/pc-bios/s390-ccw/Makefile index 6d0c2ee..9f7904f 100644 --- a/pc-bios/s390-ccw/Makefile +++ b/pc-bios/s390-ccw/Makefile @@ -9,7 +9,7 @@ $(call set-vpath, $(SRC_PATH)/pc-bios/s390-ccw) .PHONY : all clean build-all -OBJECTS = start.o main.o bootmap.o sclp.o virtio.o virtio-scsi.o virtio-blkdev.o +OBJECTS = start.o main.o bootmap.o sclp.o virtio.o virtio-scsi.o virtio-blkdev.o libc.o QEMU_CFLAGS := $(filter -W%, $(QEMU_CFLAGS)) QEMU_CFLAGS += -ffreestanding -fno-delete-null-pointer-checks -msoft-float QEMU_CFLAGS += -march=z900 -fPIE -fno-strict-aliasing diff --git a/pc-bios/s390-ccw/libc.c b/pc-bios/s390-ccw/libc.c new file mode 100644 index 0000000..a144388 --- /dev/null +++ b/pc-bios/s390-ccw/libc.c @@ -0,0 +1,89 @@ +/* + * libc-style definitions and functions + * + * Copyright 2018 IBM Corp. + * Author(s): Collin L. Walling + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include "libc.h" +#include "s390-ccw.h" + +/** + * atoui: + * @str: the string to be converted. + * + * Given a string @str, convert it to an integer. Leading spaces are + * ignored. Any other non-numerical value will terminate the conversion + * and return 0. This function only handles numbers between 0 and + * UINT64_MAX inclusive. + * + * Returns: an integer converted from the string @str, or the number 0 + * if an error occurred. + */ +uint64_t atoui(const char *str) +{ + int val = 0; + + if (!str || !str[0]) { + return 0; + } + + while (*str == ' ') { + str++; + } + + while (*str) { + if (!isdigit(*str)) { + break; + } + val = val * 10 + *str - '0'; + str++; + } + + return val; +} + +/** + * uitoa: + * @num: an integer (base 10) to be converted. + * @str: a pointer to a string to store the conversion. + * @len: the length of the passed string. + * + * Given an integer @num, convert it to a string. The string @str must be + * allocated beforehand. The resulting string will be null terminated and + * returned. This function only handles numbers between 0 and UINT64_MAX + * inclusive. + * + * Returns: the string @str of the converted integer @num + */ +char *uitoa(uint64_t num, char *str, size_t len) +{ + size_t num_idx = 0; + uint64_t tmp = num; + + IPL_assert(str != NULL, "uitoa: no space allocated to store string"); + + /* Get index to ones place */ + while ((tmp /= 10) != 0) { + num_idx++; + } + + /* Check if we have enough space for num and null */ + IPL_assert(len > num_idx, "uitoa: array too small for conversion"); + + str[num_idx + 1] = '\0'; + + /* Convert int to string */ + while (num_idx >= 0) { + str[num_idx] = num % 10 + '0'; + num /= 10; + num_idx--; + } + + return str; +} diff --git a/pc-bios/s390-ccw/libc.h b/pc-bios/s390-ccw/libc.h index 0142ea8..63ece70 100644 --- a/pc-bios/s390-ccw/libc.h +++ b/pc-bios/s390-ccw/libc.h @@ -1,6 +1,8 @@ /* * libc-style definitions and functions * + * Copyright (c) 2013 Alexander Graf + * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your @@ -19,7 +21,7 @@ typedef unsigned long long uint64_t; static inline void *memset(void *s, int c, size_t n) { - int i; + size_t i; unsigned char *p = s; for (i = 0; i < n; i++) { @@ -33,7 +35,7 @@ static inline void *memcpy(void *s1, const void *s2, size_t n) { uint8_t *dest = s1; const uint8_t *src = s2; - int i; + size_t i; for (i = 0; i < n; i++) { dest[i] = src[i]; @@ -42,4 +44,35 @@ static inline void *memcpy(void *s1, const void *s2, size_t n) return s1; } +static inline int memcmp(const void *s1, const void *s2, size_t n) +{ + size_t i; + const uint8_t *p1 = s1, *p2 = s2; + + for (i = 0; i < n; i++) { + if (p1[i] != p2[i]) { + return p1[i] > p2[i] ? 1 : -1; + } + } + + return 0; +} + +static inline size_t strlen(const char *str) +{ + size_t i; + for (i = 0; *str; i++) { + str++; + } + return i; +} + +static inline int isdigit(int c) +{ + return (c >= '0') && (c <= '9'); +} + +uint64_t atoui(const char *str); +char *uitoa(uint64_t num, char *str, size_t len); + #endif diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index 401e9db..e857ce4 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -40,22 +40,7 @@ void panic(const char *string) unsigned int get_loadparm_index(void) { - const char *lp = loadparm; - int i; - unsigned int idx = 0; - - for (i = 0; i < 8; i++) { - char c = lp[i]; - - if (c < '0' || c > '9') { - break; - } - - idx *= 10; - idx += c - '0'; - } - - return idx; + return atoui(loadparm); } static bool find_dev(Schib *schib, int dev_no)