mirror of
https://github.com/torvalds/linux.git
synced 2024-11-24 13:11:40 +00:00
74b469f2e6
Moving the ARCH specific Makefiles for i386 and x86_64 required a litle bit tweaking in the top-lvel Makefile. SRCARCH is now set in the top-level Makefile because we need this info to include the correct arch Makefile. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
48 lines
2.1 KiB
Plaintext
48 lines
2.1 KiB
Plaintext
# CPU tuning section - shared with UML.
|
|
# Must change only cflags-y (or [yn]), not CFLAGS! That makes a difference for UML.
|
|
|
|
#-mtune exists since gcc 3.4
|
|
HAS_MTUNE := $(call cc-option-yn, -mtune=i386)
|
|
ifeq ($(HAS_MTUNE),y)
|
|
tune = $(call cc-option,-mtune=$(1),$(2))
|
|
else
|
|
tune = $(call cc-option,-mcpu=$(1),$(2))
|
|
endif
|
|
|
|
align := $(cc-option-align)
|
|
cflags-$(CONFIG_M386) += -march=i386
|
|
cflags-$(CONFIG_M486) += -march=i486
|
|
cflags-$(CONFIG_M586) += -march=i586
|
|
cflags-$(CONFIG_M586TSC) += -march=i586
|
|
cflags-$(CONFIG_M586MMX) += -march=pentium-mmx
|
|
cflags-$(CONFIG_M686) += -march=i686
|
|
cflags-$(CONFIG_MPENTIUMII) += -march=i686 $(call tune,pentium2)
|
|
cflags-$(CONFIG_MPENTIUMIII) += -march=i686 $(call tune,pentium3)
|
|
cflags-$(CONFIG_MPENTIUMM) += -march=i686 $(call tune,pentium3)
|
|
cflags-$(CONFIG_MPENTIUM4) += -march=i686 $(call tune,pentium4)
|
|
cflags-$(CONFIG_MK6) += -march=k6
|
|
# Please note, that patches that add -march=athlon-xp and friends are pointless.
|
|
# They make zero difference whatsosever to performance at this time.
|
|
cflags-$(CONFIG_MK7) += -march=athlon
|
|
cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,-march=athlon)
|
|
cflags-$(CONFIG_MCRUSOE) += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
|
|
cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
|
|
cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586)
|
|
cflags-$(CONFIG_MWINCHIP2) += $(call cc-option,-march=winchip2,-march=i586)
|
|
cflags-$(CONFIG_MWINCHIP3D) += $(call cc-option,-march=winchip2,-march=i586)
|
|
cflags-$(CONFIG_MCYRIXIII) += $(call cc-option,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
|
|
cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686)
|
|
cflags-$(CONFIG_MVIAC7) += -march=i686
|
|
cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2)
|
|
|
|
# AMD Elan support
|
|
cflags-$(CONFIG_X86_ELAN) += -march=i486
|
|
|
|
# Geode GX1 support
|
|
cflags-$(CONFIG_MGEODEGX1) += -march=pentium-mmx
|
|
|
|
# add at the end to overwrite eventual tuning options from earlier
|
|
# cpu entries
|
|
cflags-$(CONFIG_X86_GENERIC) += $(call tune,generic,$(call tune,i686))
|
|
|