[dpdk-dev] [PATCH v3 3/9] eal: add windows compatible header files

[Pallavi Kadam <pallavi.kadam@intel.com>]

Adding dlfcn.h on Windows to support common code.

Adding eal_filesystem.h to support functions and
path defines for files and directories on Windows.

Adding getopt.h to support parsing options on Windows.

Modified \common\include\arch\x86\rte_vect.h
to include SSE4 header for Windows.

Signed-off-by: Antara Ganesh Kolar <antara.ganesh.kolar@intel.com>
Signed-off-by: Pallavi Kadam <pallavi.kadam@intel.com>
Reviewed-by: Ranjit Menon <ranjit.menon@intel.com>
Reviewed-by: Keith Wiles <keith.wiles@intel.com>
---
 .../common/include/arch/x86/rte_vect.h        |   4 +-
 lib/librte_eal/windows/eal/include/dlfcn.h    |  21 +++
 .../windows/eal/include/eal_filesystem.h      |  99 ++++++++++++
 lib/librte_eal/windows/eal/include/getopt.h   | 150 ++++++++++++++++++
 4 files changed, 273 insertions(+), 1 deletion(-)
 create mode 100644 lib/librte_eal/windows/eal/include/dlfcn.h
 create mode 100644 lib/librte_eal/windows/eal/include/eal_filesystem.h
 create mode 100644 lib/librte_eal/windows/eal/include/getopt.h

diff --git a/lib/librte_eal/common/include/arch/x86/rte_vect.h b/lib/librte_eal/common/include/arch/x86/rte_vect.h
index cf4e9db38..df5a60762 100644
--- a/lib/librte_eal/common/include/arch/x86/rte_vect.h
+++ b/lib/librte_eal/common/include/arch/x86/rte_vect.h
@@ -15,7 +15,9 @@
 #include <rte_config.h>
 #include "generic/rte_vect.h"
 
-#if (defined(__ICC) || (__GNUC__ == 4 &&  __GNUC_MINOR__ < 4))
+#if (defined(__ICC) || \
+	(defined(_WIN64)) || \
+	(__GNUC__ == 4 &&  __GNUC_MINOR__ < 4))
 
 #include <smmintrin.h> /* SSE4 */
 
diff --git a/lib/librte_eal/windows/eal/include/dlfcn.h b/lib/librte_eal/windows/eal/include/dlfcn.h
new file mode 100644
index 000000000..1572910b0
--- /dev/null
+++ b/lib/librte_eal/windows/eal/include/dlfcn.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation
+ */
+
+#ifndef _DLFCN_H_
+#define _DLFCN_H_
+
+/**
+ * This file is added to support common code in eal_common_options.c
+ * as Microsoft libc does not contain dlfcn.h. This may be removed
+ * in future releases.
+ */
+
+/* The windows port does not currently support dynamic loading of libraries,
+ * so fail these calls
+ */
+#define dlopen(lib, flag)   (0)
+#define RTLD_NOW 0
+#define dlerror()           ("Not supported!")
+
+#endif /* _DLFCN_H_ */
diff --git a/lib/librte_eal/windows/eal/include/eal_filesystem.h b/lib/librte_eal/windows/eal/include/eal_filesystem.h
new file mode 100644
index 000000000..583617c83
--- /dev/null
+++ b/lib/librte_eal/windows/eal/include/eal_filesystem.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation
+ */
+
+/**
+ * @file
+ * Stores functions and path defines for files and directories
+ * on the filesystem for Windows, that are used by the Windows EAL.
+ */
+
+#ifndef EAL_FILESYSTEM_H
+#define EAL_FILESYSTEM_H
+
+#include "eal_internal_cfg.h"
+
+/* sets up platform-specific runtime data dir */
+int
+eal_create_runtime_dir(void);
+
+/* returns runtime dir */
+const char *
+eal_get_runtime_dir(void);
+
+/* define the default filename prefix for the %s values below */
+#define HUGEFILE_PREFIX_DEFAULT "rte"
+
+/** Path of rte config file */
+#define RUNTIME_CONFIG_FMT "%s\\%s.config"
+
+static inline const char *
+eal_runtime_config_path(void)
+{
+	static char buffer[PATH_MAX];  /* static so auto-zeroed */
+	char  Directory[PATH_MAX];
+
+	GetTempPathA(sizeof(Directory), Directory);
+	snprintf(buffer, sizeof(buffer)-1, RUNTIME_CONFIG_FMT, Directory,
+		internal_config.hugefile_prefix);
+
+	return buffer;
+}
+
+/* Path of file backed array */
+#define FBARRAY_NAME_FMT "%s\\fbarray_%s"
+
+static inline const char *
+eal_get_fbarray_path(char *buffer, size_t buflen, const char *name) {
+	snprintf(buffer, buflen, FBARRAY_NAME_FMT, eal_get_runtime_dir(), name);
+	return buffer;
+}
+
+/* Path of primary/secondary communication unix socket file. */
+#define MP_SOCKET_FNAME "mp_socket"
+
+static inline const char *
+eal_mp_socket_path(void)
+{
+	static char buffer[PATH_MAX]; /* static so auto-zeroed */
+
+	snprintf(buffer, sizeof(buffer) - 1, "%s/%s", eal_get_runtime_dir(),
+		MP_SOCKET_FNAME);
+	return buffer;
+}
+
+/** Path of hugepage info file */
+#define HUGEPAGE_INFO_FMT "%s\\.%s_hugepage_info"
+
+static inline const char *
+eal_hugepage_info_path(void)
+{
+	static char buffer[PATH_MAX];  /* static so auto-zeroed */
+	TCHAR  Directory[PATH_MAX];
+
+	GetSystemDirectory(Directory, sizeof(Directory));
+	snprintf(buffer, sizeof(buffer)-1, HUGEPAGE_INFO_FMT, Directory,
+		internal_config.hugefile_prefix);
+	return buffer;
+}
+
+/** String format for hugepage map files */
+#define HUGEFILE_FMT "%s/%smap_%d"
+#define TEMP_HUGEFILE_FMT "%s/%smap_temp_%d"
+
+static inline const char *
+eal_get_hugefile_path(char *buffer, size_t buflen, const char *hugedir,
+	int f_id)
+{
+	snprintf(buffer, buflen, HUGEFILE_FMT, hugedir,
+		internal_config.hugefile_prefix, f_id);
+	buffer[buflen - 1] = '\0';
+	return buffer;
+}
+
+/** Function to read a single numeric value from a file on the filesystem.
+ * Used to read information from files on /sys
+ */
+int eal_parse_sysfs_value(const char *filename, unsigned long *val);
+
+#endif /* EAL_FILESYSTEM_H */
diff --git a/lib/librte_eal/windows/eal/include/getopt.h b/lib/librte_eal/windows/eal/include/getopt.h
new file mode 100644
index 000000000..2b4887cab
--- /dev/null
+++ b/lib/librte_eal/windows/eal/include/getopt.h
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Dieter Baron and Thomas Klausner.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * getopt compat.
+ *
+ * This module provides getopt() and getopt_long().
+ */
+
+#ifndef _USUAL_GETOPT_H_
+#define _USUAL_GETOPT_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#ifndef NEED_USUAL_GETOPT
+#if !defined(HAVE_GETOPT_H) || !defined(HAVE_GETOPT) || \
+	!defined(HAVE_GETOPT_LONG)
+#define NEED_USUAL_GETOPT
+#endif
+#endif
+
+#ifndef NEED_USUAL_GETOPT
+
+/* Use system getopt */
+#include <getopt.h>
+
+#else /* NEED_USUAL_GETOPT */
+
+/* All the headers include this file. */
+#include <crtdefs.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <windows.h>
+
+/* avoid name collision */
+#define optarg usual_optarg
+#define opterr usual_opterr
+#define optind usual_optind
+#define optopt usual_optopt
+#define getopt(a, b, c) usual_getopt(a, b, c)
+#define getopt_long(a, b, c, d, e) usual_getopt_long(a, b, c, d, e)
+
+
+/** argument to current option, or NULL if it has none */
+extern char *optarg;
+/** Current position in arg string.  Starts from 1.
+ * Setting to 0 resets state.
+ */
+extern int optind;
+/** whether getopt() should print error messages on problems.  Default: 1. */
+extern int opterr;
+/** Option char which caused error */
+extern int optopt;
+
+/** long option takes no argument */
+#define no_argument        0
+/** long option requires argument */
+#define required_argument  1
+/** long option has optional argument */
+#define optional_argument  2
+
+#ifndef __CYGWIN__
+#define __progname __argv[0]
+#else
+extern char __declspec(dllimport) * __progname;
+#endif
+
+/** Long option description */
+struct option {
+	/** name of long option */
+	const char *name;
+
+	/**
+	 * whether option takes an argument.
+	 * One of no_argument, required_argument, and optional_argument.
+	 */
+	int has_arg;
+
+	/** if not NULL, set *flag to val when option found */
+	int *flag;
+
+	/** if flag not NULL, value to set *flag to; else return value */
+	int val;
+};
+
+/** Compat: getopt */
+int getopt(int argc, char *argv[], const char *options);
+
+/** Compat: getopt_long */
+int getopt_long(int argc, char *argv[], const char *options,
+		const struct option *longopts, int *longindex);
+
+/** Compat: getopt_long_only */
+int getopt_long_only(int nargc, char *argv[], const char *options,
+		     const struct option *long_options, int *idx);
+
+static void
+_vwarnx(const char *fmt, va_list ap)
+{
+	(void)fprintf(stderr, "%s: ", __progname);
+	if (fmt != NULL)
+		(void)vfprintf(stderr, fmt, ap);
+	(void)fprintf(stderr, "\n");
+}
+
+static void
+warnx(const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	_vwarnx(fmt, ap);
+	va_end(ap);
+}
+
+#endif /* NEED_USUAL_GETOPT */
+
+#endif /* !_USUAL_GETOPT_H_ */
-- 
2.18.0.windows.1