Makefile.amd64 revision 1.72 
1#	$NetBSD: Makefile.amd64,v 1.72 2018/08/20 15:04:51 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
53CFLAGS+=	-fsanitize=kernel-address --param asan-globals=1
54COPTS.asan.c+=	-fno-sanitize=kernel-address
55.endif
56
57##
58## (3) libkern and compat
59##
60OPT_MODULAR=	%MODULAR%
61.if !empty(OPT_MODULAR)
62KERN_AS=	obj
63.else
64KERN_AS=	library
65.endif
66
67##
68## (4) local objects, compile rules, and dependencies
69##
70
71##
72## (5) link settings
73##
74TEXTADDR?=	0xffffffff80200000
75.if defined(KASLR)
76EXTRA_LINKFLAGS=	--split-by-file=0x100000 -r -d
77KERNLDSCRIPT?= ${AMD64}/conf/kern.ldscript.kaslr
78.else
79EXTRA_LINKFLAGS=	-z max-page-size=0x200000
80KERNLDSCRIPT?= ${AMD64}/conf/kern.ldscript
81.endif
82LINKFLAGS_NORMAL=	-X
83
84##
85## (6) port specific target dependencies
86##
87
88# depend on CPU configuration
89locore.o machdep.o: Makefile
90
91acpi_wakeup_low.o amd64func.o busfunc.o cpufunc.o cpu_in_cksum.o: assym.h
92linux_sigcode.o linux32_sigcode.o lock_stubs.o mptramp.o: assym.h
93netbsd32_sigcode.o: assym.h
94
95##
96## (7) misc settings
97##
98
99##
100## (8) config(8) generated machinery
101##
102%INCLUDES
103
104%OBJS
105
106%CFILES
107
108%SFILES
109
110%LOAD
111
112%RULES
113
114##
115## (9) port independent kernel machinery
116##
117.include "$S/conf/Makefile.kern.inc"
118
119## Include rules for ACPI wakecode
120.include "$S/arch/x86/acpi/Makefile.wakecode.inc"
121
122##
123## (10) Appending make options.
124##
125%MAKEOPTIONSAPPEND
126