1#	$OpenBSD: Makefile.loongson,v 1.84 2023/09/06 01:47:37 jsg Exp $
2
3# For instructions on building kernels consult the config(8) and options(4)
4# manual pages.
5#
6# N.B.: NO DEPENDENCIES ON FOLLOWING FLAGS ARE VISIBLE TO MAKEFILE
7#	IF YOU CHANGE THE DEFINITION OF ANY OF THESE RECOMPILE EVERYTHING
8# DEBUG is set to -g by config if debugging is requested (config -g).
9# PROF is set to -pg by config if profiling is requested (config -p).
10
11.include <bsd.own.mk>
12
13SIZE?=	size
14STRIP?=	ctfstrip
15AS?=	as
16CC?=	cc
17LD?=	ld ${ENDIAN}
18
19AS+=${ENDIAN}
20CC+=${ENDIAN}
21LD+=${ENDIAN}
22
23# source tree is located via $S relative to the compilation directory
24.ifndef S
25S!=	cd ../../../..; pwd
26.endif
27
28_machdir?=	$S/arch/${_mach}
29_archdir?=	$S/arch/${_arch}
30
31INCLUDES=	-nostdinc -I$S -I${.OBJDIR} -I$S/arch \
32		-I$S/dev/pci/drm/include \
33		-I$S/dev/pci/drm/include/uapi
34CPPFLAGS=	${INCLUDES} ${IDENT} ${PARAM} -D_KERNEL -D__${_mach}__ -MD -MP
35CWARNFLAGS=	-Werror -Wall -Wimplicit-function-declaration \
36		-Wno-pointer-sign \
37		-Wframe-larger-than=2047
38
39CMACHFLAGS=	-mno-abicalls ${ABI} -msoft-float -Wa,-mfix-loongson2f-btb -G 0
40CMACHFLAGS+=	-ffreestanding ${NOPIE_FLAGS}
41SORTR=		sort -R
42.if ${IDENT:M-DNO_PROPOLICE}
43CMACHFLAGS+=	-fno-stack-protector
44.endif
45.if ${IDENT:M-DSMALL_KERNEL}
46SORTR=		cat
47COPTIMIZE?=	-Oz
48.endif
49.if ${COMPILER_VERSION:Mclang}
50NO_INTEGR_AS=	-no-integrated-as
51CMACHFLAGS+=	-fomit-frame-pointer
52CWARNFLAGS+=	-Wno-address-of-packed-member -Wno-constant-conversion \
53		-Wno-unused-but-set-variable -Wno-gnu-folding-constant
54.endif
55
56DEBUG?=		-g
57COPTIMIZE?=	-O2
58CFLAGS=		${DEBUG} ${CWARNFLAGS} ${CMACHFLAGS} ${COPTIMIZE} ${COPTS} ${PIPE}
59AFLAGS=		-D_LOCORE -x assembler-with-cpp ${CWARNFLAGS} ${CMACHFLAGS}
60LINKFLAGS=	-e start -T ld.script -Ttext=${LINK_ADDRESS} -warn-common -nopie
61
62HOSTCC?=	${CC}
63HOSTED_CPPFLAGS=${CPPFLAGS:S/^-nostdinc$//}
64HOSTED_CFLAGS=	${CFLAGS}
65HOSTED_C=	${HOSTCC} ${HOSTED_CFLAGS} ${HOSTED_CPPFLAGS} -c $<
66
67NORMAL_C_NOP=	${CC} ${CFLAGS} ${CPPFLAGS} -fno-ret-protector -c $<
68NORMAL_C=	${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c $<
69NORMAL_S=	${CC} ${AFLAGS} ${CPPFLAGS} ${PROF} -c $<
70
71%OBJS
72
73%CFILES
74
75%SFILES
76
77# load lines for config "xxx" will be emitted as:
78# xxx: ${SYSTEM_DEP} swapxxx.o
79#	${SYSTEM_LD_HEAD}
80#	${SYSTEM_LD} swapxxx.o
81#	${SYSTEM_LD_TAIL}
82SYSTEM_HEAD=	locore0.o gap.o
83SYSTEM_OBJ=	${SYSTEM_HEAD} ${OBJS} param.o ioconf.o
84SYSTEM_DEP=	Makefile ${SYSTEM_OBJ} ld.script
85SYSTEM_LD_HEAD=	@rm -f $@
86SYSTEM_LD=	@echo ${LD} ${LINKFLAGS} -o $@ '$${SYSTEM_HEAD} vers.o $${OBJS}'; \
87		umask 007; \
88		echo ${OBJS} param.o ioconf.o vers.o | tr " " "\n" | ${SORTR} > lorder; \
89		${LD} ${LINKFLAGS} -o $@ ${SYSTEM_HEAD} `cat lorder`
90SYSTEM_LD_TAIL=	@${SIZE} $@
91
92.if ${DEBUG} == "-g"
93STRIPFLAGS=	-S
94SYSTEM_LD_TAIL+=; umask 007; \
95		echo mv $@ $@.gdb; rm -f $@.gdb; mv $@ $@.gdb; \
96		echo ${STRIP} ${STRIPFLAGS} -o $@ $@.gdb; \
97		${STRIP} ${STRIPFLAGS} -o $@ $@.gdb
98.else
99LINKFLAGS+=	-S
100.endif
101
102%LOAD
103
104# cc's -MD puts the source and output paths in the dependency file;
105# since those are temp files here we need to fix it up.  It also
106# puts the file in /tmp, so we use -MF to put it in the current
107# directory as assym.P and then generate assym.d from it with a
108# good target name
109assym.h: $S/kern/genassym.sh Makefile \
110	 ${_archdir}/${_arch}/genassym.cf ${_machdir}/${_mach}/genassym.cf
111	cat ${_archdir}/${_arch}/genassym.cf ${_machdir}/${_mach}/genassym.cf | \
112	    sh $S/kern/genassym.sh ${CC} ${NO_INTEGR_AS} ${CFLAGS} ${CPPFLAGS} -MF assym.P > assym.h.tmp
113	sed '1s/.*/assym.h: \\/' assym.P > assym.d
114	sort -u assym.h.tmp > assym.h
115
116param.c: $S/conf/param.c
117	rm -f param.c
118	cp $S/conf/param.c .
119
120param.o: param.c Makefile
121	${NORMAL_C}
122
123mcount.o: $S/lib/libkern/mcount.c Makefile
124	${NORMAL_C_NOP}
125
126ioconf.o: ioconf.c
127	${NORMAL_C}
128
129ld.script: ${_machdir}/conf/ld.script
130	cp ${_machdir}/conf/ld.script $@
131
132gapdummy.o:
133	echo '__asm(".section .rodata,\"a\"");' > gapdummy.c
134	${CC} -c ${CFLAGS} ${CPPFLAGS} gapdummy.c -o $@
135
136makegap.sh:
137	cp $S/conf/makegap.sh $@
138
139MAKE_GAP = LD="${LD}" sh makegap.sh 0xefefefef gapdummy.o
140
141gap.o:	Makefile makegap.sh gapdummy.o vers.o
142	${MAKE_GAP}
143
144vers.o: ${SYSTEM_DEP:Ngap.o}
145	sh $S/conf/newvers.sh
146	${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c vers.c
147
148clean:
149	rm -f *bsd *bsd.gdb *.[dio] [a-z]*.s assym.* \
150	    gap.link gapdummy.c ld.script lorder makegap.sh param.c
151
152cleandir: clean
153	rm -f Makefile *.h ioconf.c options machine ${_mach} vers.c
154
155depend obj:
156
157locore0.o: ${_machdir}/${_mach}/locore0.S assym.h
158context.o cp0access.o exception.o locore.o: assym.h
159lcore_access.o lcore_ddb.o lcore_float.o tlbhandler.o: assym.h
160pmon32.o: assym.h
161
162hardlink-obsd:
163	[[ ! -f /bsd ]] || cmp -s bsd /bsd || ln -f /bsd /obsd
164
165newinstall:
166	install -F -m 700 bsd /bsd && sha256 -h /var/db/kernel.SHA256 /bsd
167
168install: update-link hardlink-obsd newinstall
169
170# pull in the dependency information
171.ifnmake clean
172. for o in ${SYSTEM_OBJ:Ngap.o} assym.h
173.  if exists(${o:R}.d)
174.   include "${o:R}.d"
175.  elif exists($o)
176    .PHONY: $o
177.  endif
178. endfor
179.endif
180
181%RULES
182