arch/x86/config.mk

   1 #
   2 # (C) Copyright 2000-2002
   3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 #
   5 # SPDX-License-Identifier:      GPL-2.0+
   6 #
   7
   8 CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000
   9
  10 PLATFORM_CPPFLAGS += -fno-strict-aliasing
  11 PLATFORM_CPPFLAGS += -Wstrict-prototypes
  12 PLATFORM_CPPFLAGS += -mregparm=3
  13 PLATFORM_CPPFLAGS += -fomit-frame-pointer
  14 PF_CPPFLAGS_X86   := $(call cc-option, -ffreestanding) \
  15                      $(call cc-option, -fno-toplevel-reorder, \
  16                        $(call cc-option, -fno-unit-at-a-time)) \
  17                      $(call cc-option, -fno-stack-protector) \
  18                      $(call cc-option, -mpreferred-stack-boundary=2)
  19 PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
  20 PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
  21 PLATFORM_CPPFLAGS += -DREALMODE_BASE=0x7c0
  22
  23 # Support generic board on x86
  24 __HAVE_ARCH_GENERIC_BOARD := y
  25
  26 PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
  27
  28 PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions
  29
  30 LDFLAGS_FINAL += --gc-sections -pie
  31 LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
  32 LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
  33
  34 export NORMAL_LIBGCC = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
  35 PREFIXED_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/$(shell basename $(NORMAL_LIBGCC))
  36
  37 export USE_PRIVATE_LIBGCC=$(shell dirname $(PREFIXED_LIBGCC))