Makefile.amd64 revision 1.81 
1#	$NetBSD: Makefile.amd64,v 1.81 2020/04/03 18:12:39 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/amd64/conf/``machineid''
9# after which you should do
10#	config machineid
11# Machine generic makefile changes should be made in
12#	/sys/arch/amd64/conf/Makefile.amd64
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
20MACHINE_ARCH=x86_64
21USETOOLS?=	no
22NEED_OWN_INSTALL_TARGET?=no
23NOSANITIZER=
24.include <bsd.init.mk>
25
26USE_SSP?=	yes
27
28##
29## (1) port identification
30##
31AMD64=		$S/arch/amd64
32GENASSYM_CONF=	${AMD64}/amd64/genassym.cf
33
34##
35## (2) compile settings
36##
37DEFCOPTS=	-O2 -fno-omit-frame-pointer
38CPPFLAGS+=	-Damd64 -Dx86_64
39CFLAGS+=	-mcmodel=kernel
40# -mno-sse implies -mno-sse2 (etc), explicitly disable avx to be extra sure
41CFLAGS+=	-mno-red-zone -mno-mmx -mno-sse -mno-avx
42# make absolutely sure we don't get x87 registers used as well
43CFLAGS+=	-msoft-float
44# For gcc we might need this, but other compilers barf
45# CFLAGS+=	-mno-fp-ret-in-387
46
47.if ${SPECTRE_V2_GCC_MITIGATION:U0} > 0 && ${HAVE_GCC:U0} > 0
48CFLAGS+=      -mindirect-branch=thunk-inline
49CFLAGS+=      -mindirect-branch-register
50.endif
51
52.if ${KASAN:U0} > 0 && ${HAVE_GCC:U0} > 0
53KASANFLAGS=	-fsanitize=kernel-address \
54		--param asan-globals=1 --param asan-stack=1 \
55		--param asan-instrument-allocas=1 \
56		-fsanitize-address-use-after-scope \
57		-fasan-shadow-offset=0xDFFF900000000000
58.for f in subr_asan.c subr_kcov.c subr_lwp_specificdata.c subr_specificdata.c
59KASANFLAGS.${f}=	# empty
60.endfor
61CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
62.endif
63
64.if ${KCSAN:U0} > 0 && ${HAVE_GCC:U0} > 0
65KCSANFLAGS=	-fsanitize=thread
66.for f in subr_csan.c clock.c lapic.c subr_kcov.c subr_lwp_specificdata.c \
67	subr_specificdata.c
68KCSANFLAGS.${f}=	# empty
69.endfor
70CFLAGS+=	${KCSANFLAGS.${.IMPSRC:T}:U${KCSANFLAGS}}
71.endif
72
73.if ${KMSAN:U0} > 0 && ${HAVE_LLVM:Uno} == "yes"
74KMSANFLAGS=	-fsanitize=kernel-memory
75.for f in subr_msan.c
76KMSANFLAGS.${f}=	# empty
77.endfor
78CFLAGS+=	${KMSANFLAGS.${.IMPSRC:T}:U${KMSANFLAGS}}
79.endif
80
81##
82## (3) libkern and compat
83##
84OPT_MODULAR=	%MODULAR%
85
86##
87## (4) local objects, compile rules, and dependencies
88##
89
90##
91## (5) link settings
92##
93TEXTADDR?=	0xffffffff80200000
94.if defined(KASLR)
95EXTRA_LINKFLAGS=	--split-by-file=0x100000 -r -d
96KERNLDSCRIPT?= ${AMD64}/conf/kern.ldscript.kaslr
97.else
98EXTRA_LINKFLAGS=	-z max-page-size=0x200000
99KERNLDSCRIPT?= ${AMD64}/conf/kern.ldscript
100.endif
101LINKFLAGS_NORMAL=	-X
102
103##
104## (6) port specific target dependencies
105##
106
107# depend on CPU configuration
108locore.o machdep.o: Makefile
109
110acpi_wakeup_low.o busfunc.o cpufunc.o cpu_in_cksum.o: assym.h
111linux_sigcode.o linux32_sigcode.o lock_stubs.o mptramp.o: assym.h
112netbsd32_sigcode.o: assym.h
113
114##
115## (7) misc settings
116##
117
118##
119## (8) config(8) generated machinery
120##
121%INCLUDES
122
123%OBJS
124
125%CFILES
126
127%SFILES
128
129%LOAD
130
131%RULES
132
133##
134## (9) port independent kernel machinery
135##
136.include "$S/conf/Makefile.kern.inc"
137
138## Include rules for ACPI wakecode
139.include "$S/arch/x86/acpi/Makefile.wakecode.inc"
140
141##
142## (10) Appending make options.
143##
144%MAKEOPTIONSAPPEND
145