Initial import

1 files changed, 90 insertions, 0 deletions

diff --git a/arch/x86/Makefile_32.cpu b/arch/x86/Makefile_32.cpu
new file mode 100644
index 000000000..558bd3b65
--- /dev/null
+++ b/arch/x86/Makefile_32.cpu
@@ -0,0 +1,90 @@
+# 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 := $(cc-option-align)
+ifeq ($(CONFIG_X86_MARCH_NATIVE),y)
+cflags-y			+= -march=native
+else
+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_MNATIVE) += $(call cc-option,-march=native)
+cflags-$(CONFIG_MK8)		+= $(call cc-option,-march=k8,-march=athlon)
+cflags-$(CONFIG_MK8SSE3)		+= $(call cc-option,-march=k8-sse3,-march=athlon)
+cflags-$(CONFIG_MK10)	+= $(call cc-option,-march=amdfam10,-march=athlon)
+cflags-$(CONFIG_MBARCELONA)	+= $(call cc-option,-march=barcelona,-march=athlon)
+cflags-$(CONFIG_MBOBCAT)	+= $(call cc-option,-march=btver1,-march=athlon)
+cflags-$(CONFIG_MBULLDOZER)	+= $(call cc-option,-march=bdver1,-march=athlon)
+cflags-$(CONFIG_MPILEDRIVER)	+= $(call cc-option,-march=bdver2,-march=athlon)
+cflags-$(CONFIG_MJAGUAR)	+= $(call cc-option,-march=btver2,-march=athlon)
+cflags-$(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_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 $(call tune,core2)
+cflags-$(CONFIG_MNEHALEM)	+= -march=i686 $(call tune,nehalem)
+cflags-$(CONFIG_MWESTMERE)	+= -march=i686 $(call tune,westmere)
+cflags-$(CONFIG_MSILVERMONT)	+= -march=i686 $(call tune,silvermont)
+cflags-$(CONFIG_MSANDYBRIDGE)	+= -march=i686 $(call tune,sandybridge)
+cflags-$(CONFIG_MIVYBRIDGE)	+= -march=i686 $(call tune,ivybridge)
+cflags-$(CONFIG_MHASWELL)	+= -march=i686 $(call tune,haswell)
+cflags-$(CONFIG_MBROADWELL)	+= -march=i686 $(call tune,broadwell)
+cflags-$(CONFIG_MATOM)		+= $(call cc-option,-march=bonnell,$(call cc-option,-march=core2,-march=i686)) \
+	$(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic))
+
+# AMD Elan support
+cflags-$(CONFIG_MELAN)		+= -march=i486
+
+# Geode GX1 support
+cflags-$(CONFIG_MGEODEGX1)	+= -march=pentium-mmx
+cflags-$(CONFIG_MGEODE_LX)	+= $(call cc-option,-march=geode,-march=pentium-mmx)
+endif
+
+# add at the end to overwrite eventual tuning options from earlier
+# cpu entries
+cflags-$(CONFIG_X86_GENERIC) 	+= $(call tune,generic,$(call tune,i686))
+
+# Work around the pentium-mmx code generator madness of gcc4.4.x which
+# does stack alignment by generating horrible code _before_ the mcount
+# prologue (push %ebp, mov %esp, %ebp) which breaks the function graph
+# tracer assumptions. For i686, generic, core2 this is set by the
+# compiler anyway
+ifeq ($(CONFIG_FUNCTION_GRAPH_TRACER), y)
+ADD_ACCUMULATE_OUTGOING_ARGS := y
+endif
+
+# Work around to a bug with asm goto with first implementations of it
+# in gcc causing gcc to mess up the push and pop of the stack in some
+# uses of asm goto.
+ifeq ($(CONFIG_JUMP_LABEL), y)
+ADD_ACCUMULATE_OUTGOING_ARGS := y
+endif
+
+cflags-$(ADD_ACCUMULATE_OUTGOING_ARGS) += $(call cc-option,-maccumulate-outgoing-args)
+
+# Bug fix for binutils: this option is required in order to keep
+# binutils from generating NOPL instructions against our will.
+ifneq ($(CONFIG_X86_P6_NOP),y)
+cflags-y			+= $(call cc-option,-Wa$(comma)-mtune=generic32,)
+endif