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[/] [or1k/] [tags/] [before_ORP/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-armnommu/] [byteorder.h] - Rev 1765
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#ifndef __ASM_ARM_BYTEORDER_H #define __ASM_ARM_BYTEORDER_H #undef ntohl #undef ntohs #undef htonl #undef htons #ifndef __LITTLE_ENDIAN #define __LITTLE_ENDIAN 1234 #endif #ifndef __LITTLE_ENDIAN_BITFIELD #define __LITTLE_ENDIAN_BITFIELD #endif extern unsigned long int ntohl(unsigned long int); extern unsigned short int ntohs(unsigned short int); extern unsigned long int htonl(unsigned long int); extern unsigned short int htons(unsigned short int); extern unsigned long int __ntohl(unsigned long int); extern unsigned short int __ntohs(unsigned short int); extern unsigned long int __constant_ntohl(unsigned long int); extern unsigned short int __constant_ntohs(unsigned short int); extern __inline__ unsigned long int __ntohl(unsigned long int x) { unsigned long xx; __asm__("eor\t%1, %0, %0, ror #16\n\t" "bic\t%1, %1, #0xff0000\n\t" "mov\t%0, %0, ror #8\n\t" "eor\t%0, %0, %1, lsr #8\n\t" : "=r" (x), "=&r" (xx) : "0" (x)); return x; } #define __constant_ntohl(x) \ ((unsigned long int)((((unsigned long int)(x) & 0x000000ffU) << 24) | \ (((unsigned long int)(x) & 0x0000ff00U) << 8) | \ (((unsigned long int)(x) & 0x00ff0000U) >> 8) | \ (((unsigned long int)(x) & 0xff000000U) >> 24))) extern __inline__ unsigned short int __ntohs(unsigned short int x) { __asm__("eor\t%0, %0, %0, lsr #8\n\t" "eor\t%0, %0, %0, lsl #8\n\t" "bic\t%0, %0, #0xff0000\n\t" "eor\t%0, %0, %0, lsr #8\n\t" : "=r" (x) : "0" (x)); return x; } #define __constant_ntohs(x) \ ((unsigned short int)((((unsigned short int)(x) & 0x00ff) << 8) | \ (((unsigned short int)(x) & 0xff00) >> 8))) #define __htonl(x) __ntohl(x) #define __htons(x) __ntohs(x) #define __constant_htonl(x) __constant_ntohl(x) #define __constant_htons(x) __constant_ntohs(x) #ifdef __OPTIMIZE__ # define ntohl(x) \ (__builtin_constant_p((long)(x)) ? \ __constant_ntohl((x)) : \ __ntohl((x))) # define ntohs(x) \ (__builtin_constant_p((short)(x)) ? \ __constant_ntohs((x)) : \ __ntohs((x))) # define htonl(x) \ (__builtin_constant_p((long)(x)) ? \ __constant_htonl((x)) : \ __htonl((x))) # define htons(x) \ (__builtin_constant_p((short)(x)) ? \ __constant_htons((x)) : \ __htons((x))) #endif #endif