1# $FreeBSD$ 2 3.include "defs.mk" 4 5.if !defined(__BOOT_MAKEFILE_INC__) 6__BOOT_MAKEFILE_INC__=${MFILE} 7 8CFLAGS+=-I${SASRC} 9 10SSP_CFLAGS= 11 12# Add in the no float / no SIMD stuff and announce we're freestanding 13# aarch64 and riscv don't have -msoft-float, but all others do. riscv 14# currently has no /boot/loader, but may soon. 15CFLAGS+= -ffreestanding ${CFLAGS_NO_SIMD} 16.if ${MACHINE_CPUARCH} == "aarch64" 17CFLAGS+= -mgeneral-regs-only 18.elif ${MACHINE_CPUARCH} != "riscv" 19CFLAGS+= -msoft-float 20.endif 21 22.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1) 23CFLAGS+= -march=i386 24CFLAGS.gcc+= -mpreferred-stack-boundary=2 25.endif 26 27 28.if ${MACHINE_CPUARCH} == "arm" 29# Do not generate movt/movw, because the relocation fixup for them does not 30# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8). 31# Also, the fpu is not available in a standalone environment. 32.if ${COMPILER_VERSION} < 30800 33CFLAGS.clang+= -mllvm -arm-use-movt=0 34.else 35CFLAGS.clang+= -mno-movt 36.endif 37CFLAGS.clang+= -mfpu=none 38.endif 39 40# The boot loader build uses dd status=none, where possible, for reproducible 41# build output (since performance varies from run to run). Trouble is that 42# option was recently (10.3) added to FreeBSD and is non-standard. Only use it 43# when this test succeeds rather than require dd to be a bootstrap tool. 44DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true 45DD=dd ${DD_NOSTATUS} 46 47.if ${MK_LOADER_FORCE_LE} != "no" 48.if ${MACHINE_ARCH} == "powerpc64" 49CFLAGS+= -mlittle-endian 50.endif 51.endif 52 53.endif 54