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Makefile.aarch64 revision 1.21 
      1 #	$NetBSD: Makefile.aarch64,v 1.21 2020/05/11 03:00:57 ryo Exp $
      2 
      3 # Makefile for NetBSD
      4 #
      5 # This makefile is constructed from a machine description:
      6 #	config machineid
      7 # Most changes should be made in the machine description
      8 #	/sys/arch/<arch>/conf/``machineid''
      9 # after which you should do
     10 #	config machineid
     11 # Machine generic makefile changes should be made in
     12 #	/sys/arch/arm/conf/Makefile.arm
     13 # after which config should be rerun for all machines of that type.
     14 #
     15 # To specify debugging, add the config line: makeoptions DEBUG="-g"
     16 # A better way is to specify -g only for a few files.
     17 #
     18 #	makeoptions DEBUGLIST="uvm* trap if_*"
     19 
     20 USETOOLS?=	no
     21 NEED_OWN_INSTALL_TARGET?=no
     22 .include <bsd.own.mk>
     23 
     24 ##
     25 ## (1) port identification
     26 ##
     27 THISARM=	$S/arch/${MACHINE}
     28 ARM=		$S/arch/aarch64
     29 GENASSYM_CONF=	${ARM}/aarch64/genassym.cf
     30 .-include "$S/arch/${MACHINE}/conf/Makefile.${MACHINE}.inc"
     31 
     32 ##
     33 ## (2) compile settings
     34 ##
     35 # CPPFLAGS set by platform-specific Makefile fragment.
     36 CFLAGS+=	-march=armv8-a+nofp+nosimd
     37 #CFLAGS+=	-fomit-frame-pointer
     38 CFLAGS+=	-fno-omit-frame-pointer
     39 CFLAGS+=	-mno-omit-leaf-frame-pointer
     40 #CFLAGS+=	-mno-unaligned-access
     41 
     42 .if ${HAVE_LLVM:Uno} == "yes"
     43 .if ${ARMV83_PAC:U0} > 0 && ${ARMV85_BTI:U0} > 0
     44 CFLAGS+=	-mbranch-protection=pac-ret+bti
     45 .else
     46 .if ${ARMV83_PAC:U0} > 0
     47 CFLAGS+=	-mbranch-protection=pac-ret
     48 .endif
     49 .if ${ARMV85_BTI:U0} > 0
     50 CFLAGS+=	-mbranch-protection=bti
     51 .endif
     52 .endif
     53 .endif
     54 
     55 .if ${HAVE_GCC:U0} > 0
     56 .if ${ARMV83_PAC:U0} > 0
     57 CFLAGS+=	-msign-return-address=all
     58 .endif
     59 .if ${ARMV85_BTI:U0} > 0
     60 # XXX: notyet for gcc
     61 .endif
     62 .endif
     63 
     64 .if ${KASAN:U0} > 0 && ${HAVE_GCC:U0} > 0
     65 KASANFLAGS=	-fsanitize=kernel-address \
     66 		--param asan-globals=1 --param asan-stack=1 \
     67 		--param asan-instrument-allocas=1 \
     68 		-fsanitize-address-use-after-scope \
     69 		-fasan-shadow-offset=0xDFFF600000000000
     70 .for f in subr_asan.c
     71 KASANFLAGS.${f}=	# empty
     72 .endfor
     73 CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
     74 .endif
     75 
     76 ##
     77 ## (3) libkern and compat
     78 ##
     79 OPT_MODULAR=	%MODULAR%
     80 
     81 ##
     82 ## (4) local objects, compile rules, and dependencies
     83 ##
     84 MD_OBJS+=	${SYSTEM_FIRST_OBJ} locore.o
     85 MD_CFILES+=
     86 MD_SFILES+=	${SYSTEM_FIRST_SFILE} ${ARM}/aarch64/locore.S
     87 
     88 .if defined(SYSTEM_FIRST_OBJ)
     89 ${SYSTEM_FIRST_OBJ}: ${SYSTEM_FIRST_SFILE} assym.h
     90 	${NORMAL_S}
     91 .endif
     92 
     93 locore.o: ${ARM}/aarch64/locore.S assym.h
     94 	${NORMAL_S}
     95 
     96 ##
     97 ## (5) link settings
     98 ##
     99 KERNLDSCRIPT?=	${ARM}/conf/kern.ldscript
    100 LOADADDRESS?=	0xffffc00000000000
    101 LINKFLAGS_NORMAL=	-X
    102 
    103 # Strip AArch64 mapping symbols from the kernel image, as they interfere
    104 # with ddb. Do it differently if 'makeoptions DEBUG="-g"' was specified.
    105 .if !defined(DEBUG) || empty(DEBUG:M-g*)
    106 SYSTEM_LD_TAIL?=	${OBJCOPY} -w --strip-symbol='[$$][dx]'	\
    107 				   --strip-symbol='[$$][dx]\.*' $@ ;\
    108 			${SIZE} $@; chmod 755 $@
    109 .else
    110 STRIPFLAGS=-g --strip-symbol='$$x' --strip-symbol='$$d'
    111 .endif
    112 
    113 ##
    114 ## (6) port specific target dependencies
    115 ##
    116 
    117 # depend on DIAGNOSTIC etc.
    118 cpuswitch.o fault.o machdep.o: Makefile
    119 
    120 # various assembly files that depend on assym.h
    121 atomic.o bcopy_page.o bcopyinout.o copystr.o cpuswitch.o cpu_in_cksum.o: assym.h
    122 exception.o sigcode.o: assym.h
    123 spl.o vectors.o: assym.h
    124 
    125 ##
    126 ## (7) misc settings
    127 ##
    128 
    129 # define .MAIN _before_ the make() check, so that implicit target
    130 # would be defined
    131 .MAIN: all
    132 
    133 .if !make(obj) && !make(clean) && !make(cleandir)
    134 .BEGIN::
    135 	-@rm -f arm && \
    136 		ln -s $S/arch/arm/include arm
    137 .endif
    138 
    139 ##
    140 ## (8) config(8) generated machinery
    141 ##
    142 %INCLUDES
    143 
    144 %OBJS
    145 
    146 %CFILES
    147 
    148 %SFILES
    149 
    150 %LOAD
    151 
    152 %RULES
    153 
    154 ##
    155 ## (9) after the config file is inserted
    156 ##
    157 
    158 ##
    159 ## (10) port independent kernel machinery
    160 ##
    161 
    162 .include "$S/conf/Makefile.kern.inc"
    163 
    164 ##
    165 ## (11) Appending make options.
    166 ##
    167 %MAKEOPTIONSAPPEND
    168