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| author | Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org> | 2015-03-25 17:15:29 +0100 |
|---|---|---|
| committer | Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org> | 2015-03-25 17:21:02 +0100 |
| commit | 4da707176bd554eeca183527b9260acb64ca9123 (patch) | |
| tree | 4aea68c74765ac0fa40eb1937f6b82142e643c05 /core/combo/arch | |
| parent | 5d60719e42fdc0d007920d946f1c1bb440cedab7 (diff) | |
| download | build-4da707176bd554eeca183527b9260acb64ca9123.zip build-4da707176bd554eeca183527b9260acb64ca9123.tar.gz build-4da707176bd554eeca183527b9260acb64ca9123.tar.bz2 | |
Don't use -Wl,--fix-cortex-a8 for Cortex A7, A9, A15, Krait or Denver
-Wl,--fix-cortex-a8 is a workaround for an Erratum in Cortex-A8
processors. It slightly increases code size and decreases performance,
and there's no point in using it on non-A8 CPUs.
Instead of forcing it unconditionally, use it when targeting
Cortex-A8 or generic armv7-a (which might or might not be A8).
Change-Id: Ifa59765d380445237edccfe5440a67b3ba1e459a
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
Diffstat (limited to 'core/combo/arch')
| -rw-r--r-- | core/combo/arch/arm/armv7-a-neon.mk | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/core/combo/arch/arm/armv7-a-neon.mk b/core/combo/arch/arm/armv7-a-neon.mk index d535afc..99f17aa 100644 --- a/core/combo/arch/arm/armv7-a-neon.mk +++ b/core/combo/arch/arm/armv7-a-neon.mk @@ -16,14 +16,23 @@ ifneq (,$(filter cortex-a15 krait denver,$(TARGET_$(combo_2nd_arch_prefix)CPU_VA # Fake an ARM compiler flag as these processors support LPAE which GCC/clang # don't advertise. arch_variant_cflags += -D__ARM_FEATURE_LPAE=1 + arch_variant_ldflags := \ + -Wl,--no-fix-cortex-a8 else ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT)),cortex-a8) arch_variant_cflags := -mcpu=cortex-a8 + arch_variant_ldflags := \ + -Wl,--fix-cortex-a8 else ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT)),cortex-a7) arch_variant_cflags := -mcpu=cortex-a7 + arch_variant_ldflags := \ + -Wl,--no-fix-cortex-a8 else arch_variant_cflags := -march=armv7-a + # Generic ARM might be a Cortex A8 -- better safe than sorry + arch_variant_ldflags := \ + -Wl,--fix-cortex-a8 endif endif endif @@ -31,6 +40,3 @@ endif arch_variant_cflags += \ -mfloat-abi=softfp \ -mfpu=neon - -arch_variant_ldflags := \ - -Wl,--fix-cortex-a8 |