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01: /* atmapi.h - ATM API user space/kernel compatibility */
02:  
03: /* Written 1999,2000 by Werner Almesberger, EPFL ICA */
04:  
05: 
06: #ifndef _LINUX_ATMAPI_H
07: #define _LINUX_ATMAPI_H
08: 
09: #if defined(__sparc__) || defined(__ia64__)
10: /* such alignment is not required on 32 bit sparcs, but we can't
11:    figure that we are on a sparc64 while compiling user-space programs. */
12: #define __ATM_API_ALIGN __attribute__((aligned(8)))
13: #else
14: #define __ATM_API_ALIGN
15: #endif
16: 
17: 
18: /*
19:  * Opaque type for kernel pointers. Note that _ is never accessed. We need
20:  * the struct in order hide the array, so that we can make simple assignments
21:  * instead of being forced to use memcpy. It also improves error reporting for
22:  * code that still assumes that we're passing unsigned longs.
23:  *
24:  * Convention: NULL pointers are passed as a field of all zeroes.
25:  */
26:  
27: typedef struct { unsigned char _[8]; } __ATM_API_ALIGN atm_kptr_t;
28: 
29: #endif
30: 

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