Makefile.aarch64 revision 1.22 
1#	$NetBSD: Makefile.aarch64,v 1.22 2021/02/10 08:25:01 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
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 defined(PROF) && ${HAVE_GCC:U0} > 0
43# For accurate profiling, it is better to suppress the tail call.
44CFLAGS+=	-fno-optimize-sibling-calls
45.endif
46
47.if ${HAVE_LLVM:Uno} == "yes"
48.if ${ARMV83_PAC:U0} > 0 && ${ARMV85_BTI:U0} > 0
49CFLAGS+=	-mbranch-protection=pac-ret+bti
50.else
51.if ${ARMV83_PAC:U0} > 0
52CFLAGS+=	-mbranch-protection=pac-ret
53.endif
54.if ${ARMV85_BTI:U0} > 0
55CFLAGS+=	-mbranch-protection=bti
56.endif
57.endif
58.endif
59
60.if ${HAVE_GCC:U0} > 0
61.if ${ARMV83_PAC:U0} > 0
62CFLAGS+=	-msign-return-address=all
63.endif
64.if ${ARMV85_BTI:U0} > 0
65# XXX: notyet for gcc
66.endif
67.endif
68
69.if ${KASAN:U0} > 0 && ${HAVE_GCC:U0} > 0
70KASANFLAGS=	-fsanitize=kernel-address \
71		--param asan-globals=1 --param asan-stack=1 \
72		--param asan-instrument-allocas=1 \
73		-fsanitize-address-use-after-scope \
74		-fasan-shadow-offset=0xDFFF600000000000
75.for f in subr_asan.c
76KASANFLAGS.${f}=	# empty
77.endfor
78CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
79.endif
80
81##
82## (3) libkern and compat
83##
84OPT_MODULAR=	%MODULAR%
85
86##
87## (4) local objects, compile rules, and dependencies
88##
89MD_OBJS+=	${SYSTEM_FIRST_OBJ} locore.o
90MD_CFILES+=
91MD_SFILES+=	${SYSTEM_FIRST_SFILE} ${ARM}/aarch64/locore.S
92
93.if defined(SYSTEM_FIRST_OBJ)
94${SYSTEM_FIRST_OBJ}: ${SYSTEM_FIRST_SFILE} assym.h
95	${NORMAL_S}
96.endif
97
98locore.o: ${ARM}/aarch64/locore.S assym.h
99	${NORMAL_S}
100
101##
102## (5) link settings
103##
104KERNLDSCRIPT?=	${ARM}/conf/kern.ldscript
105LOADADDRESS?=	0xffffc00000000000
106LINKFLAGS_NORMAL=	-X
107
108# Strip AArch64 mapping symbols from the kernel image, as they interfere
109# with ddb. Do it differently if 'makeoptions DEBUG="-g"' was specified.
110.if !defined(DEBUG) || empty(DEBUG:M-g*)
111SYSTEM_LD_TAIL?=	${OBJCOPY} -w --strip-symbol='[$$][dx]'	\
112				   --strip-symbol='[$$][dx]\.*' $@ ;\
113			${SIZE} $@; chmod 755 $@
114.else
115STRIPFLAGS=-g --strip-symbol='$$x' --strip-symbol='$$d'
116.endif
117
118##
119## (6) port specific target dependencies
120##
121
122# depend on DIAGNOSTIC etc.
123cpuswitch.o fault.o machdep.o: Makefile
124
125# various assembly files that depend on assym.h
126atomic.o bcopy_page.o bcopyinout.o copystr.o cpuswitch.o cpu_in_cksum.o: assym.h
127exception.o sigcode.o: assym.h
128spl.o vectors.o: assym.h
129
130##
131## (7) misc settings
132##
133
134# define .MAIN _before_ the make() check, so that implicit target
135# would be defined
136.MAIN: all
137
138.if !make(obj) && !make(clean) && !make(cleandir)
139.BEGIN::
140	-@rm -f arm && \
141		ln -s $S/arch/arm/include arm
142.endif
143
144##
145## (8) config(8) generated machinery
146##
147%INCLUDES
148
149%OBJS
150
151%CFILES
152
153%SFILES
154
155%LOAD
156
157%RULES
158
159##
160## (9) after the config file is inserted
161##
162
163##
164## (10) port independent kernel machinery
165##
166
167.include "$S/conf/Makefile.kern.inc"
168
169##
170## (11) Appending make options.
171##
172%MAKEOPTIONSAPPEND
173