Makefile.amd64 revision 1.78 
1#	$NetBSD: Makefile.amd64,v 1.78 2019/09/07 18:56:01 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 && ${HAVE_GCC:U0} > 0
53KASANFLAGS=	-fsanitize=kernel-address \
54		--param asan-globals=1 --param asan-stack=1 \
55		-fsanitize-address-use-after-scope \
56		-fasan-shadow-offset=0xDFFF900000000000
57.for f in subr_asan.c subr_kcov.c subr_lwp_specificdata.c subr_specificdata.c
58KASANFLAGS.${f}=	# empty
59.endfor
60CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
61.endif
62
63##
64## (3) libkern and compat
65##
66OPT_MODULAR=	%MODULAR%
67
68##
69## (4) local objects, compile rules, and dependencies
70##
71
72##
73## (5) link settings
74##
75TEXTADDR?=	0xffffffff80200000
76.if defined(KASLR)
77EXTRA_LINKFLAGS=	--split-by-file=0x100000 -r -d
78KERNLDSCRIPT?= ${AMD64}/conf/kern.ldscript.kaslr
79.else
80EXTRA_LINKFLAGS=	-z max-page-size=0x200000
81KERNLDSCRIPT?= ${AMD64}/conf/kern.ldscript
82.endif
83LINKFLAGS_NORMAL=	-X
84
85##
86## (6) port specific target dependencies
87##
88
89# depend on CPU configuration
90locore.o machdep.o: Makefile
91
92acpi_wakeup_low.o busfunc.o cpufunc.o cpu_in_cksum.o: assym.h
93linux_sigcode.o linux32_sigcode.o lock_stubs.o mptramp.o: assym.h
94netbsd32_sigcode.o: assym.h
95
96##
97## (7) misc settings
98##
99
100##
101## (8) config(8) generated machinery
102##
103%INCLUDES
104
105%OBJS
106
107%CFILES
108
109%SFILES
110
111%LOAD
112
113%RULES
114
115##
116## (9) port independent kernel machinery
117##
118.include "$S/conf/Makefile.kern.inc"
119
120## Include rules for ACPI wakecode
121.include "$S/arch/x86/acpi/Makefile.wakecode.inc"
122
123##
124## (10) Appending make options.
125##
126%MAKEOPTIONSAPPEND
127