diff options
Diffstat (limited to 'src/dpdk22/lib/librte_compat/rte_compat.h')
-rw-r--r-- | src/dpdk22/lib/librte_compat/rte_compat.h | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/src/dpdk22/lib/librte_compat/rte_compat.h b/src/dpdk22/lib/librte_compat/rte_compat.h deleted file mode 100644 index 1c3c8d52..00000000 --- a/src/dpdk22/lib/librte_compat/rte_compat.h +++ /dev/null @@ -1,105 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2015 Neil Horman <nhorman@tuxdriver.com>. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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 COPYRIGHT HOLDERS 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 COPYRIGHT - * OWNER 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. - */ - -#ifndef _RTE_COMPAT_H_ -#define _RTE_COMPAT_H_ -#include <rte_common.h> - -#ifdef RTE_BUILD_SHARED_LIB - -/* - * Provides backwards compatibility when updating exported functions. - * When a symol is exported from a library to provide an API, it also provides a - * calling convention (ABI) that is embodied in its name, return type, - * arguments, etc. On occasion that function may need to change to accommodate - * new functionality, behavior, etc. When that occurs, it is desireable to - * allow for backwards compatibility for a time with older binaries that are - * dynamically linked to the dpdk. To support that, the __vsym and - * VERSION_SYMBOL macros are created. They, in conjunction with the - * <library>_version.map file for a given library allow for multiple versions of - * a symbol to exist in a shared library so that older binaries need not be - * immediately recompiled. - * - * Refer to the guidelines document in the docs subdirectory for details on the - * use of these macros - */ - -/* - * Macro Parameters: - * b - function base name - * e - function version extension, to be concatenated with base name - * n - function symbol version string to be applied - * f - function prototype - * p - full function symbol name - */ - -/* - * VERSION_SYMBOL - * Creates a symbol version table entry binding symbol <b>@DPDK_<n> to the internal - * function name <b>_<e> - */ -#define VERSION_SYMBOL(b, e, n) __asm__(".symver " RTE_STR(b) RTE_STR(e) ", " RTE_STR(b) "@DPDK_" RTE_STR(n)) - -/* - * BIND_DEFAULT_SYMBOL - * Creates a symbol version entry instructing the linker to bind references to - * symbol <b> to the internal symbol <b>_<e> - */ -#define BIND_DEFAULT_SYMBOL(b, e, n) __asm__(".symver " RTE_STR(b) RTE_STR(e) ", " RTE_STR(b) "@@DPDK_" RTE_STR(n)) -#define __vsym __attribute__((used)) - -/* - * MAP_STATIC_SYMBOL - * If a function has been bifurcated into multiple versions, none of which - * are defined as the exported symbol name in the map file, this macro can be - * used to alias a specific version of the symbol to its exported name. For - * example, if you have 2 versions of a function foo_v1 and foo_v2, where the - * former is mapped to foo@DPDK_1 and the latter is mapped to foo@DPDK_2 when - * building a shared library, this macro can be used to map either foo_v1 or - * foo_v2 to the symbol foo when building a static library, e.g.: - * MAP_STATIC_SYMBOL(void foo(), foo_v2); - */ -#define MAP_STATIC_SYMBOL(f, p) - -#else -/* - * No symbol versioning in use - */ -#define VERSION_SYMBOL(b, e, n) -#define __vsym -#define BIND_DEFAULT_SYMBOL(b, e, n) -#define MAP_STATIC_SYMBOL(f, p) f __attribute__((alias(RTE_STR(p)))) -/* - * RTE_BUILD_SHARED_LIB=n - */ -#endif - - -#endif /* _RTE_COMPAT_H_ */ |