Makefile.amd64 revision 1.68 
1#	$NetBSD: Makefile.amd64,v 1.68 2018/04/18 09:20:42 martin 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
23.include <bsd.own.mk>
24
25USE_SSP?=	yes
26
27##
28## (1) port identification
29##
30AMD64=		$S/arch/amd64
31GENASSYM_CONF=	${AMD64}/amd64/genassym.cf
32
33##
34## (2) compile settings
35##
36DEFCOPTS=	-O2 -fno-omit-frame-pointer
37CPPFLAGS+=	-Damd64 -Dx86_64
38CFLAGS+=	-mcmodel=kernel
39# -mno-sse implies -mno-sse2 (etc), explicitly disable avx to be extra sure
40CFLAGS+=	-mno-red-zone -mno-mmx -mno-sse -mno-avx
41# make absolutely sure we don't get x87 registers used as well
42CFLAGS+=	-msoft-float
43# For gcc we might need this, but other compilers barf
44# CFLAGS+=	-mno-fp-ret-in-387
45
46.if !empty(SPECTRE_V2_GCC_MITIGATION) && ${SPECTRE_V2_GCC_MITIGATION:U0} > 0
47CFLAGS+=      -mindirect-branch=thunk-inline
48CFLAGS+=      -mindirect-branch-register
49.endif
50
51##
52## (3) libkern and compat
53##
54OPT_MODULAR=	%MODULAR%
55.if !empty(OPT_MODULAR)
56KERN_AS=	obj
57.else
58KERN_AS=	library
59.endif
60
61##
62## (4) local objects, compile rules, and dependencies
63##
64
65##
66## (5) link settings
67##
68TEXTADDR?=	0xffffffff80200000
69.if defined(KASLR)
70EXTRA_LINKFLAGS=	--split-by-file=0x100000 -r -d
71KERNLDSCRIPT?= ${AMD64}/conf/kern.ldscript.kaslr
72.else
73EXTRA_LINKFLAGS=	-z max-page-size=0x200000
74KERNLDSCRIPT?= ${AMD64}/conf/kern.ldscript
75.endif
76LINKFLAGS_NORMAL=	-X
77
78##
79## (6) port specific target dependencies
80##
81
82# depend on CPU configuration
83locore.o machdep.o: Makefile
84
85acpi_wakeup_low.o amd64func.o busfunc.o cpufunc.o cpu_in_cksum.o: assym.h
86linux_sigcode.o linux32_sigcode.o lock_stubs.o mptramp.o: assym.h
87netbsd32_sigcode.o: assym.h
88
89##
90## (7) misc settings
91##
92
93##
94## (8) config(8) generated machinery
95##
96%INCLUDES
97
98%OBJS
99
100%CFILES
101
102%SFILES
103
104%LOAD
105
106%RULES
107
108##
109## (9) port independent kernel machinery
110##
111.include "$S/conf/Makefile.kern.inc"
112
113## Include rules for ACPI wakecode
114.include "$S/arch/x86/acpi/Makefile.wakecode.inc"
115
116##
117## (10) Appending make options.
118##
119%MAKEOPTIONSAPPEND
120