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| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-07-13 16:33:01 -0700 |
|---|---|---|
| committer | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-07-16 03:07:59 -0700 |
| commit | 49889fb256a7f9b894b2d16fea23de1ac25b65e2 (patch) | |
| tree | 923f7a6a2eb94e4baf9141783b19df06ed9ee747 /sysdeps/x86_64/multiarch/stpncpy-avx2.S | |
| parent | 192979ee351315b84ff4277d0985f26243717cd7 (diff) | |
| download | glibc-49889fb256a7f9b894b2d16fea23de1ac25b65e2.tar glibc-49889fb256a7f9b894b2d16fea23de1ac25b65e2.tar.gz glibc-49889fb256a7f9b894b2d16fea23de1ac25b65e2.tar.bz2 glibc-49889fb256a7f9b894b2d16fea23de1ac25b65e2.zip | |
x86: Add support to build st{p|r}{n}{cpy|cat} with explicit ISA level
1. Add default ISA level selection in non-multiarch/rtld
implementations.
2. Add ISA level build guards to different implementations.
- I.e strcpy-avx2.S which is ISA level 3 will only build if
compiled ISA level <= 3. Otherwise there is no reason to
include it as we will always use one of the ISA level 4
implementations (strcpy-evex.S).
3. Refactor the ifunc selector and ifunc implementation list to use
the ISA level aware wrapper macros that allow functions below the
compiled ISA level (with a guranteed replacement) to be skipped.
Tested with and without multiarch on x86_64 for ISA levels:
{generic, x86-64-v2, x86-64-v3, x86-64-v4}
And m32 with and without multiarch.
Diffstat (limited to 'sysdeps/x86_64/multiarch/stpncpy-avx2.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/stpncpy-avx2.S | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sysdeps/x86_64/multiarch/stpncpy-avx2.S b/sysdeps/x86_64/multiarch/stpncpy-avx2.S index 032b0407d0..b2f8c19143 100644 --- a/sysdeps/x86_64/multiarch/stpncpy-avx2.S +++ b/sysdeps/x86_64/multiarch/stpncpy-avx2.S @@ -1,4 +1,8 @@ +#ifndef STPNCPY +# define STPNCPY __stpncpy_avx2 +#endif + #define USE_AS_STPCPY #define USE_AS_STRNCPY -#define STRCPY __stpncpy_avx2 +#define STRCPY STPNCPY #include "strcpy-avx2.S" |