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Makefile.aarch64 revision 1.24 
      1 #	$NetBSD: Makefile.aarch64,v 1.24 2023/07/26 03:39:55 rin 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 ${ARMV83_PAC:U0} > 0 && ${ARMV85_BTI:U0} > 0
     48 CFLAGS+=	-mbranch-protection=pac-ret+bti
     49 .else
     50 .if ${ARMV83_PAC:U0} > 0
     51 CFLAGS+=	-mbranch-protection=pac-ret
     52 .endif
     53 .if ${ARMV85_BTI:U0} > 0
     54 CFLAGS+=	-mbranch-protection=bti
     55 .endif
     56 .endif
     57 
     58 .if ${KASAN:U0} > 0 && ${HAVE_GCC:U0} > 0
     59 KASANFLAGS=	-fsanitize=kernel-address \
     60 		--param asan-globals=1 --param asan-stack=1 \
     61 		--param asan-instrument-allocas=1 \
     62 		-fsanitize-address-use-after-scope \
     63 		-fasan-shadow-offset=0xDFFF600000000000
     64 .for f in subr_asan.c
     65 KASANFLAGS.${f}=	# empty
     66 .endfor
     67 CFLAGS+=	${KASANFLAGS.${.IMPSRC:T}:U${KASANFLAGS}}
     68 .endif
     69 
     70 ##
     71 ## (3) libkern and compat
     72 ##
     73 OPT_MODULAR=	%MODULAR%
     74 
     75 ##
     76 ## (4) local objects, compile rules, and dependencies
     77 ##
     78 MD_OBJS+=	${SYSTEM_FIRST_OBJ} locore.o
     79 MD_CFILES+=
     80 MD_SFILES+=	${SYSTEM_FIRST_SFILE} ${ARM}/aarch64/locore.S
     81 
     82 .if defined(SYSTEM_FIRST_OBJ)
     83 ${SYSTEM_FIRST_OBJ}: ${SYSTEM_FIRST_SFILE} assym.h
     84 	${NORMAL_S}
     85 .endif
     86 
     87 locore.o: ${ARM}/aarch64/locore.S assym.h
     88 	${NORMAL_S}
     89 
     90 ##
     91 ## (5) link settings
     92 ##
     93 KERNLDSCRIPT?=	${ARM}/conf/kern.ldscript
     94 LOADADDRESS?=	0xffffc00000000000
     95 LINKFLAGS_NORMAL=	-X
     96 
     97 # Strip AArch64 mapping symbols from the kernel image, as they interfere
     98 # with ddb, but don't strip them in netbsd.gdb.
     99 AA64_STRIP_SYMBOLS=	--strip-symbol='[$$][dx]' \
    100 			--strip-symbol='[$$][dx]\.*'
    101 .if (defined(DEBUG) && !empty(DEBUG:M-g*)) || (!defined(DEBUG) && \
    102 	(${MKDEBUGKERNEL:Uno} == "yes" || ${MKDEBUG:Uno} == "yes"))
    103 OBJCOPY_STRIPFLAGS=	-g -w ${AA64_STRIP_SYMBOLS}
    104 .else
    105 SYSTEM_LD_TAIL=		@${OBJCOPY} -w ${AA64_STRIP_SYMBOLS} $@
    106 .endif
    107 
    108 ##
    109 ## (6) port specific target dependencies
    110 ##
    111 
    112 # depend on DIAGNOSTIC etc.
    113 cpuswitch.o fault.o machdep.o: Makefile
    114 
    115 # various assembly files that depend on assym.h
    116 atomic.o bcopy_page.o bcopyinout.o copystr.o cpuswitch.o cpu_in_cksum.o: assym.h
    117 exception.o sigcode.o: assym.h
    118 spl.o vectors.o: assym.h
    119 
    120 ##
    121 ## (7) misc settings
    122 ##
    123 
    124 # define .MAIN _before_ the make() check, so that implicit target
    125 # would be defined
    126 .MAIN: all
    127 
    128 .if !make(obj) && !make(clean) && !make(cleandir)
    129 .BEGIN::
    130 	-@rm -f arm && \
    131 		ln -s $S/arch/arm/include arm
    132 .endif
    133 
    134 ##
    135 ## (8) config(8) generated machinery
    136 ##
    137 %INCLUDES
    138 
    139 %OBJS
    140 
    141 %CFILES
    142 
    143 %SFILES
    144 
    145 %LOAD
    146 
    147 %RULES
    148 
    149 ##
    150 ## (9) after the config file is inserted
    151 ##
    152 
    153 ##
    154 ## (10) port independent kernel machinery
    155 ##
    156 
    157 .include "$S/conf/Makefile.kern.inc"
    158 
    159 ##
    160 ## (11) Appending make options.
    161 ##
    162 %MAKEOPTIONSAPPEND
    163