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tests: add F8ILL_KULONG_* and f8ill_ptr_to_kulong to tests.h

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* tests/tests.h (F8ILL_KULONG_SUPPORTED, F8ILL_KULONG_MASK): New macros.
(f8ill_ptr_to_kulong): New static inline function.
This commit is contained in:
Дмитрий Левин 2016-12-23 18:44:37 +00:00
parent a940d1a60f
commit bd43e0954b
1 changed files with 16 additions and 0 deletions
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16
tests/tests.h
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@ -141,6 +141,22 @@ int send_mmsg(int, struct mmsghdr *, unsigned int, unsigned int);
/* Create a pipe with maximized descriptor numbers. */
void pipe_maxfd(int pipefd[2]);
#define F8ILL_KULONG_SUPPORTED (sizeof(void *) < sizeof(kernel_ulong_t))
#define F8ILL_KULONG_MASK ((kernel_ulong_t) 0xffffffff00000000ULL)
/*
* For 64-bit kernel_ulong_t and 32-bit pointer,
* return a kernel_ulong_t value by filling higher bits.
* For other architertures, return the original pointer.
*/
static inline kernel_ulong_t
f8ill_ptr_to_kulong(const void *const ptr)
{
const unsigned long uptr = (unsigned long) ptr;
return F8ILL_KULONG_SUPPORTED
? F8ILL_KULONG_MASK | uptr : (kernel_ulong_t) uptr;
}
# define ARRAY_SIZE(arg) ((unsigned int) (sizeof(arg) / sizeof((arg)[0])))
# define LENGTH_OF(arg) ((unsigned int) sizeof(arg) - 1)