Makefile.aarch64 revision 1.16 
1#	$NetBSD: Makefile.aarch64,v 1.16 2019/12/04 11:24:31 jmcneill 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
20USETOOLS?=	no
21NEED_OWN_INSTALL_TARGET?=no
22.include <bsd.own.mk>
23
24##
25## (1) port identification
26##
27THISARM=	$S/arch/${MACHINE}
28ARM=		$S/arch/aarch64
29GENASSYM_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.
36CFLAGS+=	-march=armv8-a+nofp+nosimd
37#CFLAGS+=	-fomit-frame-pointer
38CFLAGS+=	-fno-omit-frame-pointer
39CFLAGS+=	-mno-omit-leaf-frame-pointer
40#CFLAGS+=	-mno-unaligned-access
41
42.if ${KASAN:U0} > 0 && ${HAVE_GCC:U0} > 0
43KASANFLAGS=	-fsanitize=kernel-address \
44		--param asan-globals=1 --param asan-stack=1 \
45		-fsanitize-address-use-after-scope \
46		-fasan-shadow-offset=0xDFFF208000000000
47.for f in subr_asan.c
48KASANFLAGS.${f}=	# empty
49.endfor
50CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
51.endif
52
53##
54## (3) libkern and compat
55##
56OPT_MODULAR=	%MODULAR%
57
58##
59## (4) local objects, compile rules, and dependencies
60##
61MD_OBJS+=	${SYSTEM_FIRST_OBJ} locore.o
62MD_CFILES+=
63MD_SFILES+=	${SYSTEM_FIRST_SFILE} ${ARM}/aarch64/locore.S
64
65.if defined(SYSTEM_FIRST_OBJ)
66${SYSTEM_FIRST_OBJ}: ${SYSTEM_FIRST_SFILE} assym.h
67	${NORMAL_S}
68.endif
69
70locore.o: ${ARM}/aarch64/locore.S assym.h
71	${NORMAL_S}
72
73##
74## (5) link settings
75##
76KERNLDSCRIPT?=	${ARM}/conf/kern.ldscript
77LOADADDRESS?=	0xffffffc000000000
78LINKFLAGS_NORMAL=	-X
79
80# Strip AArch64 mapping symbols from the kernel image, as they interfere
81# with ddb. Do it differently if 'makeoptions DEBUG="-g"' was specified.
82.if !defined(DEBUG) || empty(DEBUG:M-g*)
83SYSTEM_LD_TAIL?=	${OBJCOPY} -w --strip-symbol='[$$][dx]'	\
84				   --strip-symbol='[$$][dx]\.*' $@ ;\
85			${SIZE} $@; chmod 755 $@
86.else
87STRIPFLAGS=-g --strip-symbol='$$x' --strip-symbol='$$d'
88.endif
89
90##
91## (6) port specific target dependencies
92##
93
94# depend on DIAGNOSTIC etc.
95cpuswitch.o fault.o machdep.o: Makefile
96
97# various assembly files that depend on assym.h
98atomic.o bcopy_page.o bcopyinout.o copystr.o cpuswitch.o cpu_in_cksum.o: assym.h
99exception.o sigcode.o: assym.h
100spl.o vectors.o: assym.h
101
102##
103## (7) misc settings
104##
105
106# define .MAIN _before_ the make() check, so that implicit target
107# would be defined
108.MAIN: all
109
110.if !make(obj) && !make(clean) && !make(cleandir)
111.BEGIN::
112	-@rm -f arm && \
113		ln -s $S/arch/arm/include arm
114.endif
115
116##
117## (8) config(8) generated machinery
118##
119%INCLUDES
120
121%OBJS
122
123%CFILES
124
125%SFILES
126
127%LOAD
128
129%RULES
130
131##
132## (9) after the config file is inserted
133##
134
135##
136## (10) port independent kernel machinery
137##
138
139.include "$S/conf/Makefile.kern.inc"
140
141##
142## (11) Appending make options.
143##
144%MAKEOPTIONSAPPEND
145