s390/ptrace: add struct psw and accessor function

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Introduce a 'struct psw' which makes it easier to decode and test if
certain bits in a psw are set or are not set.
In addition also add a 'psw_bits()' helper define which allows to
directly modify and test a psw_t structure. E.g.

psw_t psw;
psw_bits(psw).t = 1; /* set dat bit */

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

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Heiko Carstens 2014-01-01 16:08:06 +01:00 • committed by Christian Borntraeger

parent 280ef0f1f9

commit 1365632bde

1 changed files with 44 additions and 0 deletions

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arch/s390/include/asm/ptrace.h

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