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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2020-12-02 14:54:45 +0000 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2021-02-12 12:43:28 +0000 |
| commit | fcad5b82714f408d1c83bfdeb50578c6ca1ab20b (patch) | |
| tree | 1d45716915b0554305d370365f792b27c7a92bb1 /string/include | |
| parent | f8d6aecefff23e1d5c4f8df128b545db43a49a00 (diff) | |
| download | arm-optimized-routines-fcad5b82714f408d1c83bfdeb50578c6ca1ab20b.tar.gz | |
string: add __mtag_tag_zero_region
Add optimized __mtag_tag_zero_region(dst, len) operation to AOR. It tags
the memory according to the tag of the dst pointer then memsets it to 0
and returns dst. It requires MTE support. The memory remains untagged if
tagging is not enabled for it. The dst must be 16 bytes aligned and len
must be a multiple of 16.
Similar to __mtag_tag_region, but uses the zeroing instructions.
Diffstat (limited to 'string/include')
| -rw-r--r-- | string/include/stringlib.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/string/include/stringlib.h b/string/include/stringlib.h index b3aa118..bc28c84 100644 --- a/string/include/stringlib.h +++ b/string/include/stringlib.h @@ -56,6 +56,7 @@ int __strncmp_aarch64_sve (const char *, const char *, size_t); # endif # if __ARM_FEATURE_MEMORY_TAGGING void *__mtag_tag_region (void *, size_t); +void *__mtag_tag_zero_region (void *, size_t); # endif #elif __arm__ void *__memcpy_arm (void *__restrict, const void *__restrict, size_t); |