1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | /* atmapi.h - ATM API user space/kernel compatibility */ |
3 | |
4 | /* Written 1999,2000 by Werner Almesberger, EPFL ICA */ |
5 | |
6 | |
7 | #ifndef _LINUX_ATMAPI_H |
8 | #define _LINUX_ATMAPI_H |
9 | |
10 | #if defined(__sparc__) || defined(__ia64__) |
11 | /* such alignment is not required on 32 bit sparcs, but we can't |
12 | figure that we are on a sparc64 while compiling user-space programs. */ |
13 | #define __ATM_API_ALIGN __attribute__((aligned(8))) |
14 | #else |
15 | #define __ATM_API_ALIGN |
16 | #endif |
17 | |
18 | |
19 | /* |
20 | * Opaque type for kernel pointers. Note that _ is never accessed. We need |
21 | * the struct in order hide the array, so that we can make simple assignments |
22 | * instead of being forced to use memcpy. It also improves error reporting for |
23 | * code that still assumes that we're passing unsigned longs. |
24 | * |
25 | * Convention: NULL pointers are passed as a field of all zeroes. |
26 | */ |
27 | |
28 | typedef struct { unsigned char _[8]; } __ATM_API_ALIGN atm_kptr_t; |
29 | |
30 | #endif |
31 | |