From 97f17497d162afdb82c8704bf097f0fee3724b2e Mon Sep 17 00:00:00 2001 From: "C.J. Collier" Date: Tue, 14 Jun 2016 07:50:17 -0700 Subject: Imported Upstream version 16.04 Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757 Signed-off-by: C.J. Collier --- .../common/include/arch/x86/rte_byteorder.h | 125 +++++++++++++++++++++ 1 file changed, 125 insertions(+) create mode 100644 lib/librte_eal/common/include/arch/x86/rte_byteorder.h (limited to 'lib/librte_eal/common/include/arch/x86/rte_byteorder.h') diff --git a/lib/librte_eal/common/include/arch/x86/rte_byteorder.h b/lib/librte_eal/common/include/arch/x86/rte_byteorder.h new file mode 100644 index 00000000..ffdb6ef5 --- /dev/null +++ b/lib/librte_eal/common/include/arch/x86/rte_byteorder.h @@ -0,0 +1,125 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * 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. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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_BYTEORDER_X86_H_ +#define _RTE_BYTEORDER_X86_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include "generic/rte_byteorder.h" + +#ifndef RTE_BYTE_ORDER +#define RTE_BYTE_ORDER RTE_LITTLE_ENDIAN +#endif + +/* + * An architecture-optimized byte swap for a 16-bit value. + * + * Do not use this function directly. The preferred function is rte_bswap16(). + */ +static inline uint16_t rte_arch_bswap16(uint16_t _x) +{ + register uint16_t x = _x; + asm volatile ("xchgb %b[x1],%h[x2]" + : [x1] "=Q" (x) + : [x2] "0" (x) + ); + return x; +} + +/* + * An architecture-optimized byte swap for a 32-bit value. + * + * Do not use this function directly. The preferred function is rte_bswap32(). + */ +static inline uint32_t rte_arch_bswap32(uint32_t _x) +{ + register uint32_t x = _x; + asm volatile ("bswap %[x]" + : [x] "+r" (x) + ); + return x; +} + +#ifndef RTE_FORCE_INTRINSICS +#define rte_bswap16(x) ((uint16_t)(__builtin_constant_p(x) ? \ + rte_constant_bswap16(x) : \ + rte_arch_bswap16(x))) + +#define rte_bswap32(x) ((uint32_t)(__builtin_constant_p(x) ? \ + rte_constant_bswap32(x) : \ + rte_arch_bswap32(x))) + +#define rte_bswap64(x) ((uint64_t)(__builtin_constant_p(x) ? \ + rte_constant_bswap64(x) : \ + rte_arch_bswap64(x))) +#else +/* + * __builtin_bswap16 is only available gcc 4.8 and upwards + */ +#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8) +#define rte_bswap16(x) ((uint16_t)(__builtin_constant_p(x) ? \ + rte_constant_bswap16(x) : \ + rte_arch_bswap16(x))) +#endif +#endif + +#define rte_cpu_to_le_16(x) (x) +#define rte_cpu_to_le_32(x) (x) +#define rte_cpu_to_le_64(x) (x) + +#define rte_cpu_to_be_16(x) rte_bswap16(x) +#define rte_cpu_to_be_32(x) rte_bswap32(x) +#define rte_cpu_to_be_64(x) rte_bswap64(x) + +#define rte_le_to_cpu_16(x) (x) +#define rte_le_to_cpu_32(x) (x) +#define rte_le_to_cpu_64(x) (x) + +#define rte_be_to_cpu_16(x) rte_bswap16(x) +#define rte_be_to_cpu_32(x) rte_bswap32(x) +#define rte_be_to_cpu_64(x) rte_bswap64(x) + +#ifdef RTE_ARCH_I686 +#include "rte_byteorder_32.h" +#else +#include "rte_byteorder_64.h" +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_BYTEORDER_X86_H_ */ -- cgit 1.2.3-korg