| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| 2 | /* |
| 3 | * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * vineetg: May 2011 |
| 10 | * -Support single cycle endian-swap insn in ARC700 4.10 |
| 11 | * |
| 12 | * vineetg: June 2009 |
| 13 | * -Better htonl implementation (5 instead of 9 ALU instructions) |
| 14 | * -Hardware assisted single cycle bswap (Use Case of ARC custom instrn) |
| 15 | */ |
| 16 | |
| 17 | #ifndef __ASM_ARC_SWAB_H |
| 18 | #define __ASM_ARC_SWAB_H |
| 19 | |
| 20 | #include <linux/types.h> |
| 21 | |
| 22 | #define __arch_swab32(x) \ |
| 23 | ({ \ |
| 24 | unsigned int tmp = x; \ |
| 25 | __asm__( \ |
| 26 | " swape %0, %1 \n" \ |
| 27 | : "=r" (tmp) \ |
| 28 | : "r" (tmp)); \ |
| 29 | tmp; \ |
| 30 | }) |
| 31 | |
| 32 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
| 33 | #define __SWAB_64_THRU_32__ |
| 34 | #endif |
| 35 | |
| 36 | #endif |