projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 8e585f02 TL |
1 | /* |
| 2 | * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. | |
| 3 | * TsiChung Liew (Tsi-Chung.Liew@freescale.com) | |
| 4 | * | |
| 1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 8e585f02 TL |
6 | */ |
| 7 | ||
| bf9e3b38 WD |
8 | #ifndef _M68K_BYTEORDER_H |
| 9 | #define _M68K_BYTEORDER_H | |
| 10 | ||
| 11 | #include <asm/types.h> | |
| 8e585f02 TL |
12 | |
| 13 | #ifdef __GNUC__ | |
| 14 | #define __sw16(x) \ | |
| 15 | ((__u16)( \ | |
| 16 | (((__u16)(x) & (__u16)0x00ffU) << 8) | \ | |
| 17 | (((__u16)(x) & (__u16)0xff00U) >> 8) )) | |
| 18 | #define __sw32(x) \ | |
| 19 | ((__u32)( \ | |
| 20 | (((__u32)(x)) << 24) | \ | |
| 21 | (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ | |
| 22 | (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \ | |
| 23 | (((__u32)(x)) >> 24) )) | |
| 24 | ||
| 25 | extern __inline__ unsigned ld_le16(const volatile unsigned short *addr) | |
| 26 | { | |
| 27 | unsigned result = *addr; | |
| 28 | return __sw16(result); | |
| 29 | } | |
| 30 | ||
| 31 | extern __inline__ void st_le16(volatile unsigned short *addr, | |
| 32 | const unsigned val) | |
| 33 | { | |
| 34 | *addr = __sw16(val); | |
| 35 | } | |
| 36 | ||
| 37 | extern __inline__ unsigned ld_le32(const volatile unsigned *addr) | |
| 38 | { | |
| 39 | unsigned result = *addr; | |
| 40 | return __sw32(result); | |
| 41 | } | |
| 42 | ||
| 43 | extern __inline__ void st_le32(volatile unsigned *addr, const unsigned val) | |
| 44 | { | |
| 45 | *addr = __sw32(val); | |
| 46 | } | |
| 47 | ||
| 48 | #if 0 | |
| 49 | /* alas, egcs sounds like it has a bug in this code that doesn't use the | |
| 50 | inline asm correctly, and can cause file corruption. Until I hear that | |
| 51 | it's fixed, I can live without the extra speed. I hope. */ | |
| 52 | #if !(__GNUC__ >= 2 && __GNUC_MINOR__ >= 90) | |
| 53 | #if 0 | |
| 54 | # define __arch_swab16(x) ld_le16(&x) | |
| 55 | # define __arch_swab32(x) ld_le32(&x) | |
| 56 | #else | |
| 57 | static __inline__ __attribute__ ((const)) | |
| 58 | __u16 ___arch__swab16(__u16 value) | |
| 59 | { | |
| 60 | return __sw16(value); | |
| 61 | } | |
| 62 | ||
| 63 | static __inline__ __attribute__ ((const)) | |
| 64 | __u32 ___arch__swab32(__u32 value) | |
| 65 | { | |
| 66 | return __sw32(value); | |
| 67 | } | |
| 68 | ||
| 69 | #define __arch__swab32(x) ___arch__swab32(x) | |
| 70 | #define __arch__swab16(x) ___arch__swab16(x) | |
| 71 | #endif /* 0 */ | |
| 72 | ||
| 73 | #endif | |
| 74 | ||
| 75 | /* The same, but returns converted value from the location pointer by addr. */ | |
| 76 | #define __arch__swab16p(addr) ld_le16(addr) | |
| 77 | #define __arch__swab32p(addr) ld_le32(addr) | |
| 78 | ||
| 79 | /* The same, but do the conversion in situ, ie. put the value back to addr. */ | |
| 80 | #define __arch__swab16s(addr) st_le16(addr,*addr) | |
| 81 | #define __arch__swab32s(addr) st_le32(addr,*addr) | |
| 82 | #endif | |
| 83 | ||
| 84 | #endif /* __GNUC__ */ | |
| 85 | ||
| 86 | #if defined(__GNUC__) && !defined(__STRICT_ANSI__) | |
| 87 | #define __BYTEORDER_HAS_U64__ | |
| 88 | #endif | |
| bf9e3b38 WD |
89 | #include <linux/byteorder/big_endian.h> |
| 90 | ||
| 8e585f02 | 91 | #endif /* _M68K_BYTEORDER_H */ |