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Makefile.aarch64 revision 1.21.2.1 
      1 #	$NetBSD: Makefile.aarch64,v 1.21.2.1 2021/04/03 22:28:13 thorpej 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 
     20 USETOOLS?=	no
     21 NEED_OWN_INSTALL_TARGET?=no
     22 .include <bsd.own.mk>
     23 
     24 ##
     25 ## (1) port identification
     26 ##
     27 THISARM=	$S/arch/${MACHINE}
     28 ARM=		$S/arch/aarch64
     29 GENASSYM_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.
     36 CFLAGS+=	-march=armv8-a+nofp+nosimd
     37 #CFLAGS+=	-fomit-frame-pointer
     38 CFLAGS+=	-fno-omit-frame-pointer
     39 CFLAGS+=	-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.
     44 CFLAGS+=	-fno-optimize-sibling-calls
     45 .endif
     46 
     47 .if ${HAVE_LLVM:Uno} == "yes"
     48 .if ${ARMV83_PAC:U0} > 0 && ${ARMV85_BTI:U0} > 0
     49 CFLAGS+=	-mbranch-protection=pac-ret+bti
     50 .else
     51 .if ${ARMV83_PAC:U0} > 0
     52 CFLAGS+=	-mbranch-protection=pac-ret
     53 .endif
     54 .if ${ARMV85_BTI:U0} > 0
     55 CFLAGS+=	-mbranch-protection=bti
     56 .endif
     57 .endif
     58 .endif
     59 
     60 .if ${HAVE_GCC:U0} > 0
     61 .if ${ARMV83_PAC:U0} > 0
     62 CFLAGS+=	-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 && ${HAVE_GCC:U0} > 0
     70 KASANFLAGS=	-fsanitize=kernel-address \
     71 		--param asan-globals=1 --param asan-stack=1 \
     72 		--param asan-instrument-allocas=1 \
     73 		-fsanitize-address-use-after-scope \
     74 		-fasan-shadow-offset=0xDFFF600000000000
     75 .for f in subr_asan.c
     76 KASANFLAGS.${f}=	# empty
     77 .endfor
     78 CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
     79 .endif
     80 
     81 ##
     82 ## (3) libkern and compat
     83 ##
     84 OPT_MODULAR=	%MODULAR%
     85 
     86 ##
     87 ## (4) local objects, compile rules, and dependencies
     88 ##
     89 MD_OBJS+=	${SYSTEM_FIRST_OBJ} locore.o
     90 MD_CFILES+=
     91 MD_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 
     98 locore.o: ${ARM}/aarch64/locore.S assym.h
     99 	${NORMAL_S}
    100 
    101 ##
    102 ## (5) link settings
    103 ##
    104 KERNLDSCRIPT?=	${ARM}/conf/kern.ldscript
    105 LOADADDRESS?=	0xffffc00000000000
    106 LINKFLAGS_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*)
    111 SYSTEM_LD_TAIL?=	${OBJCOPY} -w --strip-symbol='[$$][dx]'	\
    112 				   --strip-symbol='[$$][dx]\.*' $@ ;\
    113 			${SIZE} $@; chmod 755 $@
    114 .else
    115 STRIPFLAGS=-g --strip-symbol='$$x' --strip-symbol='$$d'
    116 .endif
    117 
    118 ##
    119 ## (6) port specific target dependencies
    120 ##
    121 
    122 # depend on DIAGNOSTIC etc.
    123 cpuswitch.o fault.o machdep.o: Makefile
    124 
    125 # various assembly files that depend on assym.h
    126 atomic.o bcopy_page.o bcopyinout.o copystr.o cpuswitch.o cpu_in_cksum.o: assym.h
    127 exception.o sigcode.o: assym.h
    128 spl.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