Makefile.booters revision 1.40 
1#	$NetBSD: Makefile.booters,v 1.40 2003/01/29 18:44:47 fvdl Exp $
2
3.include <bsd.own.mk>
4
5STRIPFLAG=
6BINMODE=444
7
8LIBCRT0=	# nothing
9LIBCRTBEGIN=	# nothing
10LIBCRTEND=	# nothing
11LIBC=		# nothing
12
13# Make sure we override any optimization options specified by the
14# user.
15.if ${MACHINE_ARCH} == "x86_64"
16COPTS=	-Os -m32
17CPPFLAGS+= -DBOOT_ELF64
18.else
19COPTS=	-Os -mcpu=i386
20.endif
21COPTS+= -ffreestanding
22
23I386_STAND_DIR?= $S/arch/i386/stand
24
25.PATH: ${I386_STAND_DIR}/lib/crt/bootsect ${I386_STAND_DIR}/lib
26# ensure the stuff we need to load all of 'biosboot' in in the first few
27# sectors, and that anything that goes to real mode is in the first 64k.
28# (prot_to_real will bleat if the return address is >64k)
29BSSTART= start_bootsect.o fraglist.o bootsectmain.o biosdisk_ll.o \
30	bios_disk.o diskbuf.o \
31	biosdelay.o biosgetrtc.o biosmca.o biosmem.o biosmemx.o \
32	biosreboot.o conio.o
33
34.PATH: ${I386_STAND_DIR}/lib/crt/rom
35ROMSTART= start_rom.o
36GENPROMDIR= ${I386_STAND_DIR}/genprom
37GENPROMOBJDIR!= cd ${GENPROMDIR} && ${PRINTOBJDIR}
38GENPROM= ${GENPROMOBJDIR}/genprom
39
40.PATH: ${I386_STAND_DIR}/lib/crt/dos
41DOSSTART= start_dos.o doscommain.o
42
43.PATH: ${I386_STAND_DIR}/lib/crt/pxe
44PXESTART= start_pxe.o
45
46CPPFLAGS += -nostdinc -I${.OBJDIR} -I$S -I${I386_STAND_DIR}/lib -I$S/lib/libsa
47CPPFLAGS+= -D_STANDALONE
48
49# XXX
50.if ${MACHINE_ARCH} == "x86_64"
51CPPFLAGS+=-m32
52LD+=-m elf_i386
53LIBKERN_ARCH=i386
54KERNMISCMAKEFLAGS="LIBKERN_ARCH=i386"
55.endif
56
57CLEANFILES+= ${STARTFILE} vers.c ${BASE}.list ${BASE}.ldscript
58SRCS+=	vers.c
59
60.if !make(obj) && !make(clean) && !make(cleandir)
61.BEGIN: machine
62.NOPATH: machine
63.endif
64
65realdepend realall: machine
66CLEANFILES+= machine
67
68machine::
69	-rm -f $@
70	ln -s $S/arch/i386/include $@
71
72${OBJS} ${BSSTART} ${ROMSTART} ${DOSSTART} ${PXESTART}: machine
73
74### find out what to use for libkern
75KERN_AS=	library
76.include "${S}/lib/libkern/Makefile.inc"
77LIBKERN=	${KERNLIB}
78
79### find out what to use for libz
80Z_AS=		library
81.include "${S}/lib/libz/Makefile.inc"
82LIBZ=		${ZLIB}
83
84### find out what to use for libsa
85SA_AS=		library
86SAMISCMAKEFLAGS+="SA_USE_LOADFILE=yes"
87.include "${S}/lib/libsa/Makefile.inc"
88LIBSA=		${SALIB}
89
90### find out what to use for libi386
91I386DIR= ${I386_STAND_DIR}/lib
92.include "${I386DIR}/Makefile.inc"
93LIBI386=		${I386LIB}
94
95cleandir distclean: cleanlibdir
96
97cleanlibdir:
98	rm -rf lib
99
100.if ${OBJECT_FMT} == "ELF"
101LDFLAGS=-M -e start 	# -N does not work properly.
102.else
103LDFLAGS=-N -M -e _start 
104.endif
105
106LIBLIST=${LIBI386} ${LIBSA} ${LIBZ} ${LIBSA} ${LIBKERN} ${LIBI386} ${LIBSA}
107
108vers.c: ${VERSIONFILE} ${SOURCES}
109	sh ${S}conf/newvers_stand.sh ${.ALLSRC} 'i386' ${NEWVERSWHAT}
110
111CLEANFILES+= ${BASE}.sym
112${BASE}.sym: ${STARTFILE} ${OBJS} ${LIBSA} ${LIBZ} ${LIBKERN} ${LIBI386}
113	@# A default link has a 4k gap between the rodata and data.
114	@# We don't need it here - and are short of space!
115	@# The -N option might work - but it puts the code at offset
116	@# 0x80 in the file.
117	@# Get linker to tell us its link script and remove the line.
118	@rm -f ${BASE}.ldscript
119	@ ${LD} --verbose >${BASE}.ldscript
120	@ printf '%b' "1,/^===/d\n/ALIGN(0x1000.*)/\nd\n/^===/\nd\nwq\n" \
121		| ed -s ${BASE}.ldscript >/dev/null
122	${LD} -o ${BASE}.sym ${LDFLAGS} -Ttext ${RELOC} -T ${BASE}.ldscript \
123	    ${STARTFILE} ${OBJS} ${LIBLIST} >${BASE}.list
124	@# The code, bss, data and stack are restricted to one 64k segment.
125	@# Check there is a 'moderate' amount (4k) of stack space.
126	@# 2k isn't enough, 3.5k might be (but harder to test for).
127	@# If the stack is too small hair starts being pulled out.
128	@ grep '^[ 0x]*[a-e].*PROVIDE (end, .)$$' ${BASE}.list >/dev/null || { \
129		echo "*** Less that 4k stack space in biosboot" >&2; \
130		rm -f ${BASE}.sym; \
131		false; }
132
133CLEANFILES+= ${BASE}.rom
134${BASE}.rom: ${STARTFILE} ${OBJS} ${LIBSA} ${LIBZ} ${LIBKERN} ${LIBI386}
135	${LD} -o ${BASE}.sym ${LDFLAGS} -Ttext ${RELOC} ${STARTFILE} ${OBJS} \
136	    ${LIBLIST} >${BASE}.list
137	${OBJCOPY} -O binary ${BASE}.sym ${BASE}.bin
138	${GENPROM} ${ROM_SIZE} < ${BASE}.bin > ${BASE}.rom || \
139	    rm -f ${BASE}.rom
140	rm -f ${BASE}.bin
141
142CLEANFILES+= ${BASE}.com
143${BASE}.com: ${STARTFILE} ${OBJS} ${LIBSA} ${LIBZ} ${LIBKERN} ${LIBI386}
144	${LD} -o ${BASE}.sym ${LDFLAGS} -Ttext ${RELOC} ${STARTFILE} ${OBJS} \
145	    ${LIBLIST} >${BASE}.list
146	${OBJCOPY} -O binary ${BASE}.sym ${BASE}.com
147
148CLEANFILES+= ${BASE}.bin
149${BASE}.bin: ${STARTFILE} ${OBJS} ${LIBSA} ${LIBZ} ${LIBKERN} ${LIBI386}
150	${LD} -o ${BASE}.sym ${LDFLAGS} -Ttext ${RELOC} ${STARTFILE} ${OBJS} \
151	    ${LIBLIST} > ${BASE}.list
152	${OBJCOPY} -O binary ${BASE}.sym ${BASE}.bin
153
154.include <bsd.prog.mk>
155