Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
s390/processor: Add __forward_psw() helper
Similar to __rewind_psw() add the counter part __forward_psw(). This
helps to make code more readable if a PSW address has to be forwarded,
since it is more natural to write
addr = __forward_psw(psw, ilen);
instead of
addr = __rewind_psw(psw, -ilen);
This renames also the ilc parameter of __rewind_psw() to ilen, since
the parameter reflects an instruction length, and not an instruction
length code. Also change the type of ilen from unsigned long to long
so it reflects that lengths can be negative or positive.
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
+7
-2
+7
-2
arch/s390/include/asm/processor.h
+7
-2
arch/s390/include/asm/processor.h
···
379
379
/*
380
380
* Rewind PSW instruction address by specified number of bytes.
381
381
*/
382
-
static inline unsigned long __rewind_psw(psw_t psw, unsigned long ilc)
382
+
static inline unsigned long __rewind_psw(psw_t psw, long ilen)
383
383
{
384
384
unsigned long mask;
385
385
386
386
mask = (psw.mask & PSW_MASK_EA) ? -1UL :
387
387
(psw.mask & PSW_MASK_BA) ? (1UL << 31) - 1 :
388
388
(1UL << 24) - 1;
389
-
return (psw.addr - ilc) & mask;
389
+
return (psw.addr - ilen) & mask;
390
+
}
391
+
392
+
static inline unsigned long __forward_psw(psw_t psw, long ilen)
393
+
{
394
+
return __rewind_psw(psw, -ilen);
390
395
}
391
396
392
397
/*