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[PATCH 2/7] Don't disable SSE in x86-64 ld.so
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: GNU C Library <libc-alpha at sourceware dot org>
- Date: Tue, 25 Aug 2015 05:22:23 -0700
- Subject: [PATCH 2/7] Don't disable SSE in x86-64 ld.so
- Authentication-results: sourceware.org; auth=none
Since ld.so preserves vector registers now, we can use SSE in ld.so.
OK for master?
H.J.
---
* sysdeps/i386/Makefile [$(subdir) == elf] (CFLAGS-.os): Add
-mno-sse -mno-mmx for $(all-rtld-routines).
[$(subdir) == elf] (tests-special): Add
$(objpfx)tst-ld-sse-use.out.
[$(subdir) == elf] ($(objpfx)tst-ld-sse-use.out): New rule.
* sysdeps/x86/Makefile [$(subdir) == elf] (CFLAGS-.os): Removed.
[$(subdir) == elf] (tests-special): Likewise.
[$(subdir) == elf] ($(objpfx)tst-ld-sse-use.out): Likewise.
* sysdeps/x86_64/Makefile [$(subdir) == elf] (CFLAGS-.os): Add
-mno-mmx for $(all-rtld-routines).
---
sysdeps/i386/Makefile | 11 +++++++++++
sysdeps/x86/Makefile | 11 -----------
sysdeps/x86_64/Makefile | 3 +++
3 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/sysdeps/i386/Makefile b/sysdeps/i386/Makefile
index 11f425d..2c08907 100644
--- a/sysdeps/i386/Makefile
+++ b/sysdeps/i386/Makefile
@@ -79,3 +79,14 @@ endif
ifeq ($(subdir),csu)
gen-as-const-headers += tlsdesc.sym
endif
+
+ifeq ($(subdir),elf)
+CFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\
+ -mno-sse -mno-mmx)
+
+tests-special += $(objpfx)tst-ld-sse-use.out
+$(objpfx)tst-ld-sse-use.out: ../sysdeps/x86/tst-ld-sse-use.sh $(objpfx)ld.so
+ @echo "Checking ld.so for SSE register use. This will take a few seconds..."
+ $(BASH) $< $(objpfx) '$(NM)' '$(OBJDUMP)' '$(READELF)' > $@; \
+ $(evaluate-test)
+endif
diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile
index c262fdf..0de4f42 100644
--- a/sysdeps/x86/Makefile
+++ b/sysdeps/x86/Makefile
@@ -1,14 +1,3 @@
-ifeq ($(subdir),elf)
-CFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\
- -mno-sse -mno-mmx)
-
-tests-special += $(objpfx)tst-ld-sse-use.out
-$(objpfx)tst-ld-sse-use.out: ../sysdeps/x86/tst-ld-sse-use.sh $(objpfx)ld.so
- @echo "Checking ld.so for SSE register use. This will take a few seconds..."
- $(BASH) $< $(objpfx) '$(NM)' '$(OBJDUMP)' '$(READELF)' > $@; \
- $(evaluate-test)
-endif
-
ifeq ($(subdir),csu)
gen-as-const-headers += cpu-features-offsets.sym rtld-global-offsets.sym
endif
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index f6ef064..e155691 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -19,6 +19,9 @@ gen-as-const-headers += locale-defines.sym
endif
ifeq ($(subdir),elf)
+CFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\
+ -mno-mmx)
+
sysdep-dl-routines += tlsdesc dl-tlsdesc
tests += ifuncmain8
--
2.4.3