| # Force i386-only instructions |
| # |
| CFLAGS += -march=i386 |
| |
| # Code size reduction. |
| # |
| CFLAGS += -fomit-frame-pointer |
| |
| # Code size reduction. |
| # |
| ifeq ($(CCTYPE),gcc) |
| CFLAGS += -fstrength-reduce |
| endif |
| |
| # Code size reduction. gcc3 needs a different syntax to gcc2 if you |
| # want to avoid spurious warnings. |
| # |
| ifeq ($(CCTYPE),gcc) |
| GCC_VERSION := $(subst ., ,$(shell $(CC) -dumpversion)) |
| GCC_MAJOR := $(firstword $(GCC_VERSION)) |
| ifeq ($(GCC_MAJOR),2) |
| CFLAGS += -malign-jumps=1 -malign-loops=1 -malign-functions=1 |
| else |
| CFLAGS += -falign-jumps=1 -falign-loops=1 -falign-functions=1 |
| endif # gcc2 |
| endif # gcc |
| |
| # Code size reduction. This is almost always a win. The kernel uses |
| # it, too. |
| # |
| ifeq ($(CCTYPE),gcc) |
| CFLAGS += -mpreferred-stack-boundary=2 |
| endif |
| |
| # Code size reduction. Use regparm for all functions - C functions |
| # called from assembly (or vice versa) need __asmcall now |
| # |
| CFLAGS += -mregparm=3 |
| |
| # Code size reduction. Use -mrtd (same __asmcall requirements as above) |
| ifeq ($(CCTYPE),gcc) |
| CFLAGS += -mrtd |
| endif |
| |
| # Code size reduction. This is the logical complement to -mregparm=3. |
| # It doesn't currently buy us anything, but if anything ever tries to |
| # return small structures, let's be prepared |
| # |
| CFLAGS += -freg-struct-return |
| |
| # Force 32-bit code even on an x86-64 machine |
| # |
| CFLAGS += -m32 |
| ASFLAGS += --32 |
| ifeq ($(HOST_OS),FreeBSD) |
| LDFLAGS += -m elf_i386_fbsd |
| else |
| LDFLAGS += -m elf_i386 |
| endif |
| |
| # EFI requires -fshort-wchar, and nothing else currently uses wchar_t |
| # |
| CFLAGS += -fshort-wchar |
| |
| # We need to undefine the default macro "i386" when compiling .S |
| # files, otherwise ".arch i386" translates to ".arch 1"... |
| # |
| CFLAGS += -Ui386 |
| |
| # Locations of utilities |
| # |
| ISOLINUX_BIN = /usr/lib/syslinux/isolinux.bin |
| |
| # i386-specific directories containing source files |
| # |
| SRCDIRS += arch/i386/core arch/i386/transitions arch/i386/prefix |
| SRCDIRS += arch/i386/firmware/pcbios |
| SRCDIRS += arch/i386/image |
| SRCDIRS += arch/i386/drivers |
| SRCDIRS += arch/i386/drivers/net |
| SRCDIRS += arch/i386/interface/pcbios |
| SRCDIRS += arch/i386/interface/pxe |
| SRCDIRS += arch/i386/interface/pxeparent |
| SRCDIRS += arch/i386/interface/syslinux |
| SRCDIRS += arch/i386/hci/commands |
| |
| # The various xxx_loader.c files are #included into core/loader.c and |
| # should not be compiled directly. |
| # |
| NON_AUTO_SRCS += arch/i386/core/aout_loader.c |
| NON_AUTO_SRCS += arch/i386/core/freebsd_loader.c |
| NON_AUTO_SRCS += arch/i386/core/wince_loader.c |
| |
| # Include common x86 Makefile |
| # |
| MAKEDEPS += arch/x86/Makefile |
| include arch/x86/Makefile |
| |
| # Include platform-specific Makefile |
| # |
| MAKEDEPS += arch/i386/Makefile.$(PLATFORM) |
| include arch/i386/Makefile.$(PLATFORM) |
| |
| # Some suffixes (e.g. %.fd0) are generated directly from other |
| # finished files (e.g. %.dsk), rather than having their own prefix. |
| |
| # rule to write disk images to /dev/fd0 |
| NON_AUTO_MEDIA += fd0 |
| %fd0 : %dsk |
| $(QM)$(ECHO) " [DD] $@" |
| $(Q)dd if=$< bs=512 conv=sync of=/dev/fd0 |
| $(Q)sync |
| |
| # Add NON_AUTO_MEDIA to the media list, so that they show up in the |
| # output of "make" |
| # |
| MEDIA += $(NON_AUTO_MEDIA) |
