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