Makefile.aarch64 revision 1.20 
1#	$NetBSD: Makefile.aarch64,v 1.20 2020/04/13 07:32:36 maxv 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 ${HAVE_LLVM:Uno} == "yes"
43.if ${ARMV83_PAC:U0} > 0 && ${ARMV85_BTI:U0} > 0
44CFLAGS+=	-mbranch-protection=pac-ret+bti
45.else
46.if ${ARMV83_PAC:U0} > 0
47CFLAGS+=	-mbranch-protection=pac-ret
48.endif
49.if ${ARMV85_BTI:U0} > 0
50CFLAGS+=	-mbranch-protection=bti
51.endif
52.endif
53.endif
54
55.if ${KASAN:U0} > 0 && ${HAVE_GCC:U0} > 0
56KASANFLAGS=	-fsanitize=kernel-address \
57		--param asan-globals=1 --param asan-stack=1 \
58		--param asan-instrument-allocas=1 \
59		-fsanitize-address-use-after-scope \
60		-fasan-shadow-offset=0xDFFF600000000000
61.for f in subr_asan.c
62KASANFLAGS.${f}=	# empty
63.endfor
64CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
65.endif
66
67##
68## (3) libkern and compat
69##
70OPT_MODULAR=	%MODULAR%
71
72##
73## (4) local objects, compile rules, and dependencies
74##
75MD_OBJS+=	${SYSTEM_FIRST_OBJ} locore.o
76MD_CFILES+=
77MD_SFILES+=	${SYSTEM_FIRST_SFILE} ${ARM}/aarch64/locore.S
78
79.if defined(SYSTEM_FIRST_OBJ)
80${SYSTEM_FIRST_OBJ}: ${SYSTEM_FIRST_SFILE} assym.h
81	${NORMAL_S}
82.endif
83
84locore.o: ${ARM}/aarch64/locore.S assym.h
85	${NORMAL_S}
86
87##
88## (5) link settings
89##
90KERNLDSCRIPT?=	${ARM}/conf/kern.ldscript
91LOADADDRESS?=	0xffffc00000000000
92LINKFLAGS_NORMAL=	-X
93
94# Strip AArch64 mapping symbols from the kernel image, as they interfere
95# with ddb. Do it differently if 'makeoptions DEBUG="-g"' was specified.
96.if !defined(DEBUG) || empty(DEBUG:M-g*)
97SYSTEM_LD_TAIL?=	${OBJCOPY} -w --strip-symbol='[$$][dx]'	\
98				   --strip-symbol='[$$][dx]\.*' $@ ;\
99			${SIZE} $@; chmod 755 $@
100.else
101STRIPFLAGS=-g --strip-symbol='$$x' --strip-symbol='$$d'
102.endif
103
104##
105## (6) port specific target dependencies
106##
107
108# depend on DIAGNOSTIC etc.
109cpuswitch.o fault.o machdep.o: Makefile
110
111# various assembly files that depend on assym.h
112atomic.o bcopy_page.o bcopyinout.o copystr.o cpuswitch.o cpu_in_cksum.o: assym.h
113exception.o sigcode.o: assym.h
114spl.o vectors.o: assym.h
115
116##
117## (7) misc settings
118##
119
120# define .MAIN _before_ the make() check, so that implicit target
121# would be defined
122.MAIN: all
123
124.if !make(obj) && !make(clean) && !make(cleandir)
125.BEGIN::
126	-@rm -f arm && \
127		ln -s $S/arch/arm/include arm
128.endif
129
130##
131## (8) config(8) generated machinery
132##
133%INCLUDES
134
135%OBJS
136
137%CFILES
138
139%SFILES
140
141%LOAD
142
143%RULES
144
145##
146## (9) after the config file is inserted
147##
148
149##
150## (10) port independent kernel machinery
151##
152
153.include "$S/conf/Makefile.kern.inc"
154
155##
156## (11) Appending make options.
157##
158%MAKEOPTIONSAPPEND
159