1*53ee8cc1Swenshuai.xi /* atmapi.h - ATM API user space/kernel compatibility */ 2*53ee8cc1Swenshuai.xi 3*53ee8cc1Swenshuai.xi /* Written 1999,2000 by Werner Almesberger, EPFL ICA */ 4*53ee8cc1Swenshuai.xi 5*53ee8cc1Swenshuai.xi 6*53ee8cc1Swenshuai.xi #ifndef _LINUX_ATMAPI_H 7*53ee8cc1Swenshuai.xi #define _LINUX_ATMAPI_H 8*53ee8cc1Swenshuai.xi 9*53ee8cc1Swenshuai.xi #if defined(__sparc__) || defined(__ia64__) 10*53ee8cc1Swenshuai.xi /* such alignment is not required on 32 bit sparcs, but we can't 11*53ee8cc1Swenshuai.xi figure that we are on a sparc64 while compiling user-space programs. */ 12*53ee8cc1Swenshuai.xi #define __ATM_API_ALIGN __attribute__((aligned(8))) 13*53ee8cc1Swenshuai.xi #else 14*53ee8cc1Swenshuai.xi #define __ATM_API_ALIGN 15*53ee8cc1Swenshuai.xi #endif 16*53ee8cc1Swenshuai.xi 17*53ee8cc1Swenshuai.xi 18*53ee8cc1Swenshuai.xi /* 19*53ee8cc1Swenshuai.xi * Opaque type for kernel pointers. Note that _ is never accessed. We need 20*53ee8cc1Swenshuai.xi * the struct in order hide the array, so that we can make simple assignments 21*53ee8cc1Swenshuai.xi * instead of being forced to use memcpy. It also improves error reporting for 22*53ee8cc1Swenshuai.xi * code that still assumes that we're passing unsigned longs. 23*53ee8cc1Swenshuai.xi * 24*53ee8cc1Swenshuai.xi * Convention: NULL pointers are passed as a field of all zeroes. 25*53ee8cc1Swenshuai.xi */ 26*53ee8cc1Swenshuai.xi 27*53ee8cc1Swenshuai.xi typedef struct { unsigned char _[8]; } __ATM_API_ALIGN atm_kptr_t; 28*53ee8cc1Swenshuai.xi 29*53ee8cc1Swenshuai.xi #endif 30