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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-01-10 18:00:54 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-02-06 16:19:35 -0300 |
| commit | 350d8d13661a863e6b189f02d876fa265fe71302 (patch) | |
| tree | e0db50d920d3edecd1becd9b65c7be91810609d0 /sysdeps/s390 | |
| parent | 00cb84dde75f44847aab094aa3779cc5d222c7e4 (diff) | |
| download | glibc-350d8d13661a863e6b189f02d876fa265fe71302.zip glibc-350d8d13661a863e6b189f02d876fa265fe71302.tar.gz glibc-350d8d13661a863e6b189f02d876fa265fe71302.tar.bz2 | |
string: Improve generic strlen
New algorithm read the first aligned address and mask off the
unwanted bytes (this strategy is similar to arch-specific
implementations used on powerpc, sparc, and sh).
The loop now read word-aligned address and check using the has_zero
macro.
Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc-linux-gnu,
and powercp64-linux-gnu by removing the arch-specific assembly
implementation and disabling multi-arch (it covers both LE and BE
for 64 and 32 bits).
Co-authored-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
Diffstat (limited to 'sysdeps/s390')
| -rw-r--r-- | sysdeps/s390/strlen-c.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sysdeps/s390/strlen-c.c b/sysdeps/s390/strlen-c.c index b829ef2..0a33a6f 100644 --- a/sysdeps/s390/strlen-c.c +++ b/sysdeps/s390/strlen-c.c @@ -21,12 +21,14 @@ #if HAVE_STRLEN_C # if HAVE_STRLEN_IFUNC # define STRLEN STRLEN_C +# endif + +# include <string/strlen.c> + +# if HAVE_STRLEN_IFUNC # if defined SHARED && IS_IN (libc) -# undef libc_hidden_builtin_def -# define libc_hidden_builtin_def(name) \ - __hidden_ver1 (__strlen_c, __GI_strlen, __strlen_c); +__hidden_ver1 (__strlen_c, __GI_strlen, __strlen_c); # endif # endif -# include <string/strlen.c> #endif |