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authorNoah Goldstein <goldstein.w.n@gmail.com>2022-07-03 21:28:07 -0700
committerNoah Goldstein <goldstein.w.n@gmail.com>2022-07-05 16:42:42 -0700
commitc69f960b017b2cdf39335739009526a72fb20379 (patch)
tree7ddf954fb2901d7c934b07d5dd5990501315a732 /sysdeps/x86_64/Makefile
parentbaeae86fb8ccd85b6bf9b5091884fa9b66d84a99 (diff)
downloadglibc-c69f960b017b2cdf39335739009526a72fb20379.tar.gz
x86: Add support for building str{c|p}{brk|spn} with explicit ISA level
The changes for these functions are different than the others because the best implementation (sse4_2) requires the generic implementation as a fallback to be built as well. Changes are: 1. Add non-multiarch functions for str{c|p}{brk|spn}.c to statically select the best implementation based on the configured ISA build level. 2. Add stubs for str{c|p}{brk|spn}-generic and varshift.c to in the sysdeps/x86_64 directory so that the the sse4 implementation will have all of its dependencies for the non-multiarch / rtld build when ISA level >= 2. 3. Add new multiarch/rtld-strcspn.c that just include the non-multiarch strcspn.c which will in turn select the best implementation based on the compiled ISA level. 4. 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/Makefile')
-rw-r--r--sysdeps/x86_64/Makefile9
1 files changed, 8 insertions, 1 deletions
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 79365aff2a..e597a4855f 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -14,7 +14,14 @@ sysdep_noprof += _mcount
endif
ifeq ($(subdir),string)
-sysdep_routines += strcasecmp_l-nonascii strncase_l-nonascii
+sysdep_routines += \
+ strcasecmp_l-nonascii \
+ strcspn-generic \
+ strncase_l-nonascii \
+ strpbrk-generic \
+ strspn-generic \
+ varshift \
+# sysdep_routines
gen-as-const-headers += locale-defines.sym
tests += \
tst-rsi-strlen