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author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2011-01-16 12:12:32 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-01-17 09:39:16 +0100 |
commit | be4146161b5316f4e7fb51c5a3c9ac0e5622c42d (patch) | |
tree | 2e3149c7f604232bbf8f99e71ca3712978d14a67 /arch/blackfin/include | |
parent | f68dc4080440563d1dd69c8cd87c7566e60855fa (diff) | |
download | barebox-be4146161b5316f4e7fb51c5a3c9ac0e5622c42d.tar.gz barebox-be4146161b5316f4e7fb51c5a3c9ac0e5622c42d.tar.xz |
import swab.h arch implementation form linux v2.3.37
this will avoid __bswapsi2 issue see with gcc 4.5.1
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/blackfin/include')
-rw-r--r-- | arch/blackfin/include/asm/bitsperlong.h | 1 | ||||
-rw-r--r-- | arch/blackfin/include/asm/swab.h | 50 |
2 files changed, 51 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/bitsperlong.h b/arch/blackfin/include/asm/bitsperlong.h new file mode 100644 index 0000000000..6dc0bb0c13 --- /dev/null +++ b/arch/blackfin/include/asm/bitsperlong.h @@ -0,0 +1 @@ +#include <asm-generic/bitsperlong.h> diff --git a/arch/blackfin/include/asm/swab.h b/arch/blackfin/include/asm/swab.h new file mode 100644 index 0000000000..89de6507ca --- /dev/null +++ b/arch/blackfin/include/asm/swab.h @@ -0,0 +1,50 @@ +/* + * Copyright 2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef _BLACKFIN_SWAB_H +#define _BLACKFIN_SWAB_H + +#include <linux/types.h> +#include <asm-generic/swab.h> + +#ifdef __GNUC__ + +static __inline__ __attribute_const__ __u32 __arch_swahb32(__u32 xx) +{ + __u32 tmp; + __asm__("%1 = %0 >> 8 (V);\n\t" + "%0 = %0 << 8 (V);\n\t" + "%0 = %0 | %1;\n\t" + : "+d"(xx), "=&d"(tmp)); + return xx; +} +#define __arch_swahb32 __arch_swahb32 + +static __inline__ __attribute_const__ __u32 __arch_swahw32(__u32 xx) +{ + __u32 rv; + __asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx)); + return rv; +} +#define __arch_swahw32 __arch_swahw32 + +static __inline__ __attribute_const__ __u32 __arch_swab32(__u32 xx) +{ + return __arch_swahb32(__arch_swahw32(xx)); +} +#define __arch_swab32 __arch_swab32 + +static __inline__ __attribute_const__ __u16 __arch_swab16(__u16 xx) +{ + __u32 xw = xx; + __asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw)); + return (__u16)xw; +} +#define __arch_swab16 __arch_swab16 + +#endif /* __GNUC__ */ + +#endif /* _BLACKFIN_SWAB_H */ |