diff options
| author | Stefan Reinauer <reinauer@chromium.org> | 2015-10-21 13:00:41 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2016-02-18 01:47:04 +0100 |
| commit | 05082737a9507a8bbb238d9d439f74a72a7606e8 (patch) | |
| tree | dd5ec603f620e9e4a7a054533d5098b2a19c97b2 /util/vgabios/include/swab.h | |
| parent | eb960f1af93b55cbfb0d5f86343970ded151d3c7 (diff) | |
Redo testbios utility to use all of YABEL
Drop buggy duplicate implementation of intXX handlers
and provide enough glue to use all of YABEL.
Change-Id: I2db77a56a2a991cb84876456dcbb3a843a0d9754
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/12117
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'util/vgabios/include/swab.h')
| -rw-r--r-- | util/vgabios/include/swab.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/util/vgabios/include/swab.h b/util/vgabios/include/swab.h new file mode 100644 index 0000000000..28d0b8abb2 --- /dev/null +++ b/util/vgabios/include/swab.h @@ -0,0 +1,57 @@ +/* + * This file is part of the coreboot project. + * + * This program 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; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _SWAB_H +#define _SWAB_H + +/* + * linux/byteorder/swab.h + * Byte-swapping, independently from CPU endianness + * swabXX[ps]?(foo) + * + * Francois-Rene Rideau <fare@tunes.org> 19971205 + * separated swab functions from cpu_to_XX, + * to clean up support for bizarre-endian architectures. + * + * See asm-i386/byteorder.h and such for examples of how to provide + * architecture-dependent optimized versions + * + */ + +/* casts are necessary for constants, because we never know how for sure + * how U/UL/ULL map to __u16, __u32, __u64. At least not in a portable way. + */ +#define swab16(x) \ + ((unsigned short)( \ + (((unsigned short)(x) & (unsigned short)0x00ffU) << 8) | \ + (((unsigned short)(x) & (unsigned short)0xff00U) >> 8) )) + +#define swab32(x) \ + ((unsigned int)( \ + (((unsigned int)(x) & (unsigned int)0x000000ffUL) << 24) | \ + (((unsigned int)(x) & (unsigned int)0x0000ff00UL) << 8) | \ + (((unsigned int)(x) & (unsigned int)0x00ff0000UL) >> 8) | \ + (((unsigned int)(x) & (unsigned int)0xff000000UL) >> 24) )) + +#define swab64(x) \ + ((uint64_t)( \ + (((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) | \ + (((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) | \ + (((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \ + (((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) | \ + (((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \ + (((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \ + (((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \ + (((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56) )) + +#endif /* _SWAB_H */ |