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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2016-06-20 17:48:20 +0100 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2016-06-20 17:48:20 +0100 |
| commit | 58ec4fb881719d0b69989f9a4955290fca531831 (patch) | |
| tree | 6dd1655ed1d33543036be0e7a18ac2998dd79b2f /sysdeps/aarch64/strlen.S | |
| parent | b998e16e71c8617746b7c39500e925d28ff22ed8 (diff) | |
| download | glibc-58ec4fb881719d0b69989f9a4955290fca531831.tar glibc-58ec4fb881719d0b69989f9a4955290fca531831.tar.gz glibc-58ec4fb881719d0b69989f9a4955290fca531831.tar.bz2 glibc-58ec4fb881719d0b69989f9a4955290fca531831.zip | |
Add a simple rawmemchr implementation. Use strlen for rawmemchr(s, '\0') as it
is the fastest way to search for '\0'. Otherwise use memchr with an infinite
size. This is 3x faster on benchtests for large sizes. Passes GLIBC tests.
* sysdeps/aarch64/rawmemchr.S (__rawmemchr): New file.
* sysdeps/aarch64/strlen.S (__strlen): Change to __strlen to avoid PLT.
Diffstat (limited to 'sysdeps/aarch64/strlen.S')
| -rw-r--r-- | sysdeps/aarch64/strlen.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sysdeps/aarch64/strlen.S b/sysdeps/aarch64/strlen.S index 9b4d1da60c..a07834bf96 100644 --- a/sysdeps/aarch64/strlen.S +++ b/sysdeps/aarch64/strlen.S @@ -84,7 +84,7 @@ whether the first fetch, which may be misaligned, crosses a page boundary. */ -ENTRY_ALIGN (strlen, 6) +ENTRY_ALIGN (__strlen, 6) and tmp1, srcin, MIN_PAGE_SIZE - 1 mov zeroones, REP8_01 cmp tmp1, MIN_PAGE_SIZE - 16 @@ -213,5 +213,6 @@ L(page_cross): csel data1, data1, tmp4, eq csel data2, data2, tmp2, eq b L(page_cross_entry) -END (strlen) +END (__strlen) +weak_alias (__strlen, strlen) libc_hidden_builtin_def (strlen) |