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Makefile.aarch64 revision 1.23 
      1 #	$NetBSD: Makefile.aarch64,v 1.23 2021/05/27 06:19:38 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 defined(PROF) && ${HAVE_GCC:U0} > 0
     43 # For accurate profiling, it is better to suppress the tail call.
     44 CFLAGS+=	-fno-optimize-sibling-calls
     45 .endif
     46 
     47 .if ${ARMV83_PAC:U0} > 0 && ${ARMV85_BTI:U0} > 0
     48 CFLAGS+=	-mbranch-protection=pac-ret+bti
     49 .else
     50 .if ${ARMV83_PAC:U0} > 0
     51 CFLAGS+=	-mbranch-protection=pac-ret
     52 .endif
     53 .if ${ARMV85_BTI:U0} > 0
     54 CFLAGS+=	-mbranch-protection=bti
     55 .endif
     56 .endif
     57 
     58 .if ${KASAN:U0} > 0 && ${HAVE_GCC:U0} > 0
     59 KASANFLAGS=	-fsanitize=kernel-address \
     60 		--param asan-globals=1 --param asan-stack=1 \
     61 		--param asan-instrument-allocas=1 \
     62 		-fsanitize-address-use-after-scope \
     63 		-fasan-shadow-offset=0xDFFF600000000000
     64 .for f in subr_asan.c
     65 KASANFLAGS.${f}=	# empty
     66 .endfor
     67 CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
     68 .endif
     69 
     70 ##
     71 ## (3) libkern and compat
     72 ##
     73 OPT_MODULAR=	%MODULAR%
     74 
     75 ##
     76 ## (4) local objects, compile rules, and dependencies
     77 ##
     78 MD_OBJS+=	${SYSTEM_FIRST_OBJ} locore.o
     79 MD_CFILES+=
     80 MD_SFILES+=	${SYSTEM_FIRST_SFILE} ${ARM}/aarch64/locore.S
     81 
     82 .if defined(SYSTEM_FIRST_OBJ)
     83 ${SYSTEM_FIRST_OBJ}: ${SYSTEM_FIRST_SFILE} assym.h
     84 	${NORMAL_S}
     85 .endif
     86 
     87 locore.o: ${ARM}/aarch64/locore.S assym.h
     88 	${NORMAL_S}
     89 
     90 ##
     91 ## (5) link settings
     92 ##
     93 KERNLDSCRIPT?=	${ARM}/conf/kern.ldscript
     94 LOADADDRESS?=	0xffffc00000000000
     95 LINKFLAGS_NORMAL=	-X
     96 
     97 # Strip AArch64 mapping symbols from the kernel image, as they interfere
     98 # with ddb. Do it differently if 'makeoptions DEBUG="-g"' was specified.
     99 .if !defined(DEBUG) || empty(DEBUG:M-g*)
    100 SYSTEM_LD_TAIL?=	${OBJCOPY} -w --strip-symbol='[$$][dx]'	\
    101 				   --strip-symbol='[$$][dx]\.*' $@ ;\
    102 			${SIZE} $@; chmod 755 $@
    103 .else
    104 STRIPFLAGS=-g --strip-symbol='$$x' --strip-symbol='$$d'
    105 .endif
    106 
    107 ##
    108 ## (6) port specific target dependencies
    109 ##
    110 
    111 # depend on DIAGNOSTIC etc.
    112 cpuswitch.o fault.o machdep.o: Makefile
    113 
    114 # various assembly files that depend on assym.h
    115 atomic.o bcopy_page.o bcopyinout.o copystr.o cpuswitch.o cpu_in_cksum.o: assym.h
    116 exception.o sigcode.o: assym.h
    117 spl.o vectors.o: assym.h
    118 
    119 ##
    120 ## (7) misc settings
    121 ##
    122 
    123 # define .MAIN _before_ the make() check, so that implicit target
    124 # would be defined
    125 .MAIN: all
    126 
    127 .if !make(obj) && !make(clean) && !make(cleandir)
    128 .BEGIN::
    129 	-@rm -f arm && \
    130 		ln -s $S/arch/arm/include arm
    131 .endif
    132 
    133 ##
    134 ## (8) config(8) generated machinery
    135 ##
    136 %INCLUDES
    137 
    138 %OBJS
    139 
    140 %CFILES
    141 
    142 %SFILES
    143 
    144 %LOAD
    145 
    146 %RULES
    147 
    148 ##
    149 ## (9) after the config file is inserted
    150 ##
    151 
    152 ##
    153 ## (10) port independent kernel machinery
    154 ##
    155 
    156 .include "$S/conf/Makefile.kern.inc"
    157 
    158 ##
    159 ## (11) Appending make options.
    160 ##
    161 %MAKEOPTIONSAPPEND
    162