diff options
| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
| commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
| tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/h8300/lib/memset.S | |
| parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) | |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/h8300/lib/memset.S')
| -rw-r--r-- | kernel/arch/h8300/lib/memset.S | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/kernel/arch/h8300/lib/memset.S b/kernel/arch/h8300/lib/memset.S new file mode 100644 index 000000000..18d4e709b --- /dev/null +++ b/kernel/arch/h8300/lib/memset.S @@ -0,0 +1,69 @@ +/* memset.S */ + +#include <asm/linkage.h> + +#if defined(CONFIG_CPU_H8300H) + .h8300h +#endif +#if defined(CONFIG_CPU_H8S) + .h8300s +#endif + .text + +.global memset +.global clear_user + +;;void *memset(*ptr, int c, size_t count) +;; ptr = er0 +;; c = er1(r1l) +;; count = er2 +memset: + btst #0,r0l + beq 2f + + ;; odd address +1: + mov.b r1l,@er0 + adds #1,er0 + dec.l #1,er2 + beq 6f + + ;; even address +2: + mov.l er2,er3 + cmp.l #4,er2 + blo 4f + ;; count>=4 -> count/4 +#if defined(CONFIG_CPU_H8300H) + shlr.l er2 + shlr.l er2 +#endif +#if defined(CONFIG_CPU_H8S) + shlr.l #2,er2 +#endif + ;; byte -> long + mov.b r1l,r1h + mov.w r1,e1 +3: + mov.l er1,@er0 + adds #4,er0 + dec.l #1,er2 + bne 3b +4: + ;; count % 4 + and.b #3,r3l + beq 6f +5: + mov.b r1l,@er0 + adds #1,er0 + dec.b r3l + bne 5b +6: + rts + +clear_user: + mov.l er1, er2 + sub.l er1, er1 + bra memset + + .end |