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| author | Wilco Dijkstra <Wilco.Dijkstra@arm.com> | 2018-11-08 18:50:42 +0300 |
|---|---|---|
| committer | Richard Earnshaw <Richard.Earnshaw@arm.com> | 2018-11-08 19:45:19 +0300 |
| commit | df7824d1a465473a1901f67e26fd1485756cb446 (patch) | |
| tree | 3de7bdee059df006c2116bd3de63aebd48b160d6 /newlib | |
| parent | bba82041b26d21a817bdb6b25ee70c8b1212e17b (diff) | |
Fix issue with dst bias in memset
This patch fixes an issue in the previous memset loop change. If the
zva size is >= 256 and there are more than 64 bytes left in the
tail, we could enter the loop and thus need to rebias dst by 32 as
well.
Since no known CPUs use this size this can't be tested natively, so I've
tested it on a simulator initialized with a large zva size.
--
Diffstat (limited to 'newlib')
| -rw-r--r-- | newlib/libc/machine/aarch64/memset.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/newlib/libc/machine/aarch64/memset.S b/newlib/libc/machine/aarch64/memset.S index 7c8fe583b..103e3f8bb 100644 --- a/newlib/libc/machine/aarch64/memset.S +++ b/newlib/libc/machine/aarch64/memset.S @@ -233,6 +233,7 @@ L(zva_other): subs count, count, zva_len b.hs 3b 4: add count, count, zva_len + sub dst, dst, 32 /* Bias dst for tail loop. */ b L(tail64) .size memset, . - memset |