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| author | H.J. Lu <hjl.tools@gmail.com> | 2020-12-05 07:01:58 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-01-13 05:51:17 -0800 |
| commit | efbbd9c33adfa843d65860b1b02adebb8ecb57ce (patch) | |
| tree | 79c61c55698036fc99ec936ea400c7a9975eef28 /sysdeps/unix/sysv/linux/x86_64/Makefile | |
| parent | 86a4d3fa7d1bda3c02cf713cf289d6f893970117 (diff) | |
| download | glibc-efbbd9c33adfa843d65860b1b02adebb8ecb57ce.zip glibc-efbbd9c33adfa843d65860b1b02adebb8ecb57ce.tar.gz glibc-efbbd9c33adfa843d65860b1b02adebb8ecb57ce.tar.bz2 | |
ldconfig/x86: Store ISA level in cache and aux cache
Store ISA level in the portion of the unused upper 32 bits of the hwcaps
field in cache and the unused pad field in aux cache. ISA level is stored
and checked only for shared objects in glibc-hwcaps subdirectories. The
shared objects in the default directories aren't checked since there are
no fallbacks for these shared objects.
Tested on x86-64-v2, x86-64-v3 and x86-64-v4 machines with
--disable-hardcoded-path-in-tests and --enable-hardcoded-path-in-tests.
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86_64/Makefile')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/Makefile | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/Makefile b/sysdeps/unix/sysv/linux/x86_64/Makefile index 9b82155..5e19202 100644 --- a/sysdeps/unix/sysv/linux/x86_64/Makefile +++ b/sysdeps/unix/sysv/linux/x86_64/Makefile @@ -13,3 +13,54 @@ endif ifeq ($(subdir),misc) gen-as-const-headers += sigaltstack-offsets.sym endif + +ifeq ($(subdir),elf) +ifeq (yes,$(enable-x86-isa-level)) +tests += \ + tst-glibc-hwcaps-2 +ifeq (no,$(build-hardcoded-path-in-tests)) +# This is an ld.so.cache test, and RPATH/RUNPATH in the executable +# interferes with its test objectives. +tests-container += \ + tst-glibc-hwcaps-2-cache +endif +modules-names += \ + libx86-64-isa-level-1 \ + libx86-64-isa-level-2 \ + libx86-64-isa-level-3 \ + libx86-64-isa-level-4 + +$(objpfx)tst-glibc-hwcaps-2: $(objpfx)libx86-64-isa-level.so + +$(objpfx)tst-glibc-hwcaps-2.out: \ + $(objpfx)glibc-hwcaps/x86-64-v2/libx86-64-isa-level.so \ + $(objpfx)glibc-hwcaps/x86-64-v4/libx86-64-isa-level.so \ + $(objpfx)glibc-hwcaps/x86-64-v3/libx86-64-isa-level.so +$(objpfx)glibc-hwcaps/x86-64-v2/libx86-64-isa-level.so: \ + $(objpfx)libx86-64-isa-level-2.so + $(make-target-directory) + cp $< $@ +$(objpfx)glibc-hwcaps/x86-64-v3/libx86-64-isa-level.so: \ + $(objpfx)libx86-64-isa-level-3.so + $(make-target-directory) + cp $< $@ +$(objpfx)glibc-hwcaps/x86-64-v4/libx86-64-isa-level.so: \ + $(objpfx)libx86-64-isa-level-4.so + $(make-target-directory) + cp $< $@ + +CFLAGS-libx86-64-isa-level-1.os += -march=x86-64 +CFLAGS-libx86-64-isa-level-2.os += -march=x86-64 +CFLAGS-libx86-64-isa-level-3.os += -march=x86-64 +CFLAGS-libx86-64-isa-level-4.os += -march=x86-64 + +# The test modules are parameterized by preprocessor macros. +LDFLAGS-libx86-64-isa-level-1.so += -Wl,-soname,libx86-64-isa-level.so +LDFLAGS-libx86-64-isa-level-4.so += -Wl,-soname,libx86-64-isa-level.so +$(objpfx)libx86-64-isa-level%.os: $(..)/sysdeps/unix/sysv/linux/x86_64/x86-64-isa-level-VALUE.c + $(compile-command.c) -DVALUE=$(lastword $(subst -, ,$*)) \ + -DISA_LEVEL="(1 << ($(lastword $(subst -, ,$*)) - 1))" +$(objpfx)libx86-64-isa-level.so: $(objpfx)libx86-64-isa-level-1.so + cp $< $@ +endif +endif # $(subdir) == elf |