src/include/endian.h

   1 /*
   2  * Copyright (C) 2013 The Chromium OS Authors. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of
   7  * the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but without any warranty; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc.
  17  */
  18
  19 #ifndef _ENDIAN_H_
  20 #define _ENDIAN_H_
  21
  22 #include <arch/byteorder.h>
  23 #include <stdint.h>
  24 #include <swab.h>
  25
  26 #if defined(__LITTLE_ENDIAN)
  27         #define cpu_to_le64(x) ((uint64_t)(x))
  28         #define le64_to_cpu(x) ((uint64_t)(x))
  29         #define cpu_to_le32(x) ((uint32_t)(x))
  30         #define le32_to_cpu(x) ((uint32_t)(x))
  31         #define cpu_to_le16(x) ((uint16_t)(x))
  32         #define le16_to_cpu(x) ((uint16_t)(x))
  33         #define cpu_to_be64(x) swab64(x)
  34         #define be64_to_cpu(x) swab64(x)
  35         #define cpu_to_be32(x) swab32(x)
  36         #define be32_to_cpu(x) swab32(x)
  37         #define cpu_to_be16(x) swab16(x)
  38         #define be16_to_cpu(x) swab16(x)
  39 #elif defined(__BIG_ENDIAN)
  40         #define cpu_to_le64(x) swab64(x)
  41         #define le64_to_cpu(x) swab64(x)
  42         #define cpu_to_le32(x) swab32(x)
  43         #define le32_to_cpu(x) swab32(x)
  44         #define cpu_to_le16(x) swab16(x)
  45         #define le16_to_cpu(x) swab16(x)
  46         #define cpu_to_be64(x) ((uint64_t)(x))
  47         #define be64_to_cpu(x) ((uint64_t)(x))
  48         #define cpu_to_be32(x) ((uint32_t)(x))
  49         #define be32_to_cpu(x) ((uint32_t)(x))
  50         #define cpu_to_be16(x) ((uint16_t)(x))
  51         #define be16_to_cpu(x) ((uint16_t)(x))
  52 #else
  53         #error "<arch/byteorder.h> must #define __LITTLE_ENDIAN or __BIG_ENDIAN"
  54 #endif
  55
  56 #define ntohll(x) be64_to_cpu(x)
  57 #define htonll(x) cpu_to_be64(x)
  58 #define ntohl(x)  be32_to_cpu(x)
  59 #define htonl(x)  cpu_to_be32(x)
  60
  61 #define __clrsetbits(endian, bits, addr, clear, set) \
  62         write##bits(addr, cpu_to_##endian##bits((endian##bits##_to_cpu( \
  63                 read##bits(addr)) & ~((uint##bits##_t)(clear))) | (set)))
  64
  65 #define clrbits_le64(addr, clear)       __clrsetbits(le, 64, addr, clear, 0)
  66 #define clrbits_be64(addr, clear)       __clrsetbits(be, 64, addr, clear, 0)
  67 #define clrbits_le32(addr, clear)       __clrsetbits(le, 32, addr, clear, 0)
  68 #define clrbits_be32(addr, clear)       __clrsetbits(be, 32, addr, clear, 0)
  69 #define clrbits_le16(addr, clear)       __clrsetbits(le, 16, addr, clear, 0)
  70 #define clrbits_be16(addr, clear)       __clrsetbits(be, 16, addr, clear, 0)
  71
  72 #define setbits_le64(addr, set)         __clrsetbits(le, 64, addr, 0, set)
  73 #define setbits_be64(addr, set)         __clrsetbits(be, 64, addr, 0, set)
  74 #define setbits_le32(addr, set)         __clrsetbits(le, 32, addr, 0, set)
  75 #define setbits_be32(addr, set)         __clrsetbits(be, 32, addr, 0, set)
  76 #define setbits_le16(addr, set)         __clrsetbits(le, 16, addr, 0, set)
  77 #define setbits_be16(addr, set)         __clrsetbits(be, 16, addr, 0, set)
  78
  79 #define clrsetbits_le64(addr, clear, set) __clrsetbits(le, 64, addr, clear, set)
  80 #define clrsetbits_be64(addr, clear, set) __clrsetbits(be, 64, addr, clear, set)
  81 #define clrsetbits_le32(addr, clear, set) __clrsetbits(le, 32, addr, clear, set)
  82 #define clrsetbits_be32(addr, clear, set) __clrsetbits(be, 32, addr, clear, set)
  83 #define clrsetbits_le16(addr, clear, set) __clrsetbits(le, 16, addr, clear, set)
  84 #define clrsetbits_be16(addr, clear, set) __clrsetbits(be, 16, addr, clear, set)
  85
  86 #define clrsetbits_8(addr, clear, set) \
  87         write8(addr, (read8(addr) & ~(clear)) | (set))
  88 #define clrbits_8(addr, clear) clrsetbits_8(addr, clear, 0)
  89 #define setbits_8(addr, set) setbits_8(addr, 0, set)
  90
  91 #endif