########################################
# x86-specific definitions

HAS_ACPI := y
HAS_VGA  := y
xenoprof := y

#
# If you change any of these configuration options then you must
# 'make clean' before rebuilding.
#
pae ?= n
supervisor_mode_kernel ?= n
vmxassist ?= n

ifeq ($(vmxassist),y)
CFLAGS += -DVMXASSIST
endif

# Solaris grabs stdarg.h and friends from the system include directory.
ifneq ($(XEN_OS),SunOS)
CFLAGS += -nostdinc
endif

CFLAGS += -fno-builtin -fno-common
CFLAGS += -iwithprefix include -Werror -Wno-pointer-arith -pipe
CFLAGS += -I$(BASEDIR)/include 
CFLAGS += -I$(BASEDIR)/include/asm-x86/mach-generic
CFLAGS += -I$(BASEDIR)/include/asm-x86/mach-default

# Prevent floating-point variables from creeping into Xen.
CFLAGS += -msoft-float

# Disable PIE/SSP if GCC supports them. They can break us.
CFLAGS += $(call cc-option,$(CC),-nopie,)
CFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
CFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)

ifeq ($(TARGET_SUBARCH)$(pae),x86_32y)
CFLAGS += -DCONFIG_X86_PAE=1
endif

ifeq ($(supervisor_mode_kernel),y)
CFLAGS += -DCONFIG_X86_SUPERVISOR_MODE_KERNEL=1
endif

ifeq ($(XEN_TARGET_ARCH),x86_32)
x86_32 := y
x86_64 := n
endif

ifeq ($(TARGET_SUBARCH),x86_64)
CFLAGS += -mno-red-zone -fpic -fno-reorder-blocks
CFLAGS += -fno-asynchronous-unwind-tables
# -fvisibility=hidden reduces -fpic cost, if it's available
CFLAGS += $(call cc-option,$(CC),-fvisibility=hidden,)
CFLAGS := $(subst -fvisibility=hidden,-DGCC_HAS_VISIBILITY_ATTRIBUTE,$(CFLAGS))
x86_32 := n
x86_64 := y
endif

HDRS += $(wildcard $(BASEDIR)/include/asm-x86/hvm/*.h)
HDRS += $(wildcard $(BASEDIR)/include/asm-x86/hvm/svm/*.h)
HDRS += $(wildcard $(BASEDIR)/include/asm-x86/hvm/vmx/*.h)
HDRS += $(wildcard $(BASEDIR)/include/asm-x86/mach-*/*.h)

# Require GCC v3.4+ (to avoid issues with alignment constraints in Xen headers)
$(call cc-ver-check,CC,0x030400,"Xen requires at least gcc-3.4")