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selftests/powerpc: Add TM tcheck helpers in C

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Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Cyril Bur 2016-09-23 16:18:18 +10:00 committed by Michael Ellerman
parent 0886c6d4d2
commit 8e03bd4e70
1 changed files with 27 additions and 0 deletions
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27
tools/testing/selftests/powerpc/tm/tm.h
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@ -52,4 +52,31 @@ static inline bool failure_is_nesting(void)
return (__builtin_get_texasru() & 0x400000);
}
static inline int tcheck(void)
{
long cr;
asm volatile ("tcheck 0" : "=r"(cr) : : "cr0");
return (cr >> 28) & 4;
}
static inline bool tcheck_doomed(void)
{
return tcheck() & 8;
}
static inline bool tcheck_active(void)
{
return tcheck() & 4;
}
static inline bool tcheck_suspended(void)
{
return tcheck() & 2;
}
static inline bool tcheck_transactional(void)
{
return tcheck() & 6;
}
#endif /* _SELFTESTS_POWERPC_TM_TM_H */