bafe68034e
gcc versions earlier than 4.2 sign-extends the result of le16_to_cpu() and friends when we implement __arch__swabX() using __builtin_bswap_X(). Disable our arch-specific optimizations when those gcc versions are being used. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
31 lines
744 B
C
31 lines
744 B
C
/*
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* AVR32 endian-conversion functions.
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*/
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#ifndef __ASM_AVR32_BYTEORDER_H
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#define __ASM_AVR32_BYTEORDER_H
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#include <asm/types.h>
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#include <linux/compiler.h>
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#ifdef __CHECKER__
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extern unsigned long __builtin_bswap_32(unsigned long x);
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extern unsigned short __builtin_bswap_16(unsigned short x);
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#endif
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/*
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* avr32-linux-gcc versions earlier than 4.2 improperly sign-extends
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* the result.
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*/
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#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 2)
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#define __arch__swab32(x) __builtin_bswap_32(x)
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#define __arch__swab16(x) __builtin_bswap_16(x)
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#endif
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#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
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# define __BYTEORDER_HAS_U64__
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# define __SWAB_64_THRU_32__
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#endif
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#include <linux/byteorder/big_endian.h>
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#endif /* __ASM_AVR32_BYTEORDER_H */
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