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https://github.com/freebsd/freebsd-src
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6b7a14ce57
the in-kernel linker to access the _DYNAMIC data for doing loadable elf modules. The alpha kernel is already done this way, I've borrowed some of the hacks from there. This is primarily aimed at the 3-stage boot process which is intended to be able to do pre-loading of kernel modules. Note that the entry point isn't 0xf0100000 any more, it'll be a little further on - but this value is stored in the headers. I don't think this will be a problem, but I'm sure somebody will tell me if it is. :-) I'm not sure if btxboot is going to like this, it doesn't do proper ELF header checking and assumes that there are exactly two program header entries and that they are both PT_LOAD entries - a bad assumption.
268 lines
7.3 KiB
Makefile
268 lines
7.3 KiB
Makefile
# Makefile.i386 -- with config changes.
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# Copyright 1990 W. Jolitz
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# from: @(#)Makefile.i386 7.1 5/10/91
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# $Id: Makefile.i386,v 1.124 1998/09/21 06:39:11 bde Exp $
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#
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# Makefile for FreeBSD
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#
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# This makefile is constructed from a machine description:
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# config machineid
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# Most changes should be made in the machine description
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# /sys/i386/conf/``machineid''
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# after which you should do
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# config machineid
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# Generic makefile changes should be made in
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# /sys/i386/conf/Makefile.i386
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# after which config should be rerun for all machines.
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#
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# Which version of config(8) is required.
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%VERSREQ= 300007
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KERNFORMAT?= aout
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STD8X16FONT?= iso
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.if exists(./@/.)
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S= ./@
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.else
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S= ../..
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.endif
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I386= ${S}/i386
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COPTFLAGS?=-O
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INCLUDES= -nostdinc -I- -I. -I$S
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# This hack is to allow kernel compiles to succeed on machines w/out srcdist
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.if exists($S/../include)
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INCLUDES+= -I$S/../include
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.else
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INCLUDES+= -I/usr/include
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.endif
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COPTS= ${INCLUDES} ${IDENT} -DKERNEL -include opt_global.h
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CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
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# XXX LOCORE means "don't declare C stuff" not "for locore.s".
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ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
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# Use the default object format for genassym, etc.
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GEN_CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
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# Select the correct set of tools. Can't set OBJFORMAT here because it
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# doesn't get exported into the environment, and if it were exported
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# then it might break building of genassym, etc.
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.if ${KERNFORMAT} == "elf"
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CFLAGS+= -elf
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.else
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CFLAGS+= -aout
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.endif
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LOAD_ADDRESS?= F0100000
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DEFINED_PROF= ${PROF}
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.if defined(PROF)
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CFLAGS+= -malign-functions=4
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.if ${PROFLEVEL} >= 2
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IDENT+= -DGPROF4 -DGUPROF
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PROF+= -mprofiler-epilogue
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.endif
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.endif
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NORMAL_C= ${CC} -c ${CFLAGS} ${PROF} $<
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NORMAL_C_C= ${CC} -c ${CFLAGS} ${PROF} $<
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NORMAL_S= ${CC} -c ${ASM_CFLAGS} $<
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DRIVER_C= ${CC} -c ${CFLAGS} ${PROF} $<
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DRIVER_C_C= ${CC} -c ${CFLAGS} ${PROF} $<
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DRIVER_S= ${CC} -c -x ${ASM_CFLAGS} $<
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PROFILE_C= ${CC} -c ${CFLAGS} $<
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GEN_CFILES= ${I386}/i386/genassym.c ${I386}/i386/gensetdefs.c
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# ${I386}/i386/setdef0.c and ${I386}/i386/setdef1.c are intentionally
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# omitted from SYSTEM_CFILES. They include setdefs.h, a header which
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# is generated from all of ${OBJS}. We don't want to have to compile
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# everything just to do a make depend.
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SYSTEM_CFILES= ioconf.c param.c vnode_if.c config.c
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SYSTEM_SFILES= ${I386}/i386/locore.s
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SYSTEM_DEP= Makefile symbols.exclude symbols.sort ${SYSTEM_OBJS}
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.if ${CFLAGS:M-g} == ""
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SYMORDER_EXCLUDE=-x symbols.exclude
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.endif
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SYSTEM_LD_HEAD= @echo loading ${.TARGET}; rm -f ${.TARGET}
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.if ${KERNFORMAT} == aout
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SYSTEM_OBJS= locore.o vnode_if.o ${OBJS} ioconf.o param.o config.o
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SYSTEM_LD= @${LD} -aout -Bstatic -Z -T ${LOAD_ADDRESS} -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
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SYSTEM_LD_TAIL= @echo rearranging symbols; \
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symorder -m ${SYMORDER_EXCLUDE} symbols.sort ${.TARGET}; \
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size -aout ${.TARGET} ; chmod 755 ${.TARGET}
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.endif
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.if ${KERNFORMAT} == aoutkld
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SYSTEM_OBJS= locore.o vnode_if.o ${OBJS} ioconf.o param.o config.o
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SYSTEM_LD= @${LD} -aout -Bforcedynamic -Z -T ${LOAD_ADDRESS} -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
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SYSTEM_LD_TAIL= @echo rearranging symbols; \
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symorder -m ${SYMORDER_EXCLUDE} symbols.sort ${.TARGET}; \
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size -aout ${.TARGET} ; chmod 755 ${.TARGET}
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.endif
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.if ${KERNFORMAT} == elf
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# kld compatable export of symbols.
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SYSTEM_OBJS= locore.o setdef0.o vnode_if.o ${OBJS} ioconf.o param.o config.o \
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setdef1.o hack.so
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SYSTEM_LD= @${LD} -elf -Bdynamic -T $S/i386/conf/kernel.script \
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-export-dynamic -dynamic-linker /red/herring \
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-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
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SYSTEM_LD_TAIL= @size -elf ${.TARGET} ; chmod 755 ${.TARGET}
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SYSTEM_DEP+= $S/i386/conf/kernel.script
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.endif
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%BEFORE_DEPEND
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%OBJS
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%CFILES
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%SFILES
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%MFILES
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%LOAD
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%CLEAN
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clean:
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rm -f *.o *.s eddep errs genassym gensetdefs kernel linterrs \
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makelinks param.c setdefs.h symbols.exclude symbols.sort tags \
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vers.c vnode_if.c vnode_if.h ${CLEAN}
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#lint: /tmp param.c
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# @lint -hbxn -DGENERIC -Dvolatile= ${COPTS} \
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# ${I386}/i386/Locore.c ${CFILES} ioconf.c param.c | \
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# grep -v 'struct/union .* never defined' | \
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# grep -v 'possible pointer alignment problem'
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symbols.exclude:
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echo "gcc2_compiled." >symbols.exclude
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echo "___gnu_compiled_c" >>symbols.exclude
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symbols.sort: ${I386}/i386/symbols.raw
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grep -v '^#' ${I386}/i386/symbols.raw \
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| sed 's/^ //' | sort -u > symbols.sort
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locore.o: ${I386}/i386/locore.s assym.s
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${NORMAL_S}
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.if ${KERNFORMAT} == elf
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# This is a hack. BFD "optimizes" away dynamic mode if there are no
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# dynamic references. We could probably do a '-Bforcedynamic' mode like
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# in the a.out ld. For now, this works.
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hack.so: Makefile
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touch hack.c
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${CC} -elf -shared -nostdlib hack.c -o hack.so
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rm -f hack.c
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.endif
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setdef0.o: ${I386}/i386/setdef0.c setdefs.h
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${NORMAL_C}
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setdef1.o: ${I386}/i386/setdef1.c setdefs.h
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${NORMAL_C}
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setdefs.h: gensetdefs ${OBJS}
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./gensetdefs ${OBJS} >setdefs.h
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gensetdefs: gensetdefs.o
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${CC} ${GEN_CFLAGS} gensetdefs.o -o ${.TARGET}
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gensetdefs.o: ${I386}/i386/gensetdefs.c
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${CC} -c ${GEN_CFLAGS} ${I386}/i386/gensetdefs.c
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# this rule stops ./assym.s in .depend from causing problems
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./assym.s: assym.s
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assym.s: genassym
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./genassym >assym.s
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genassym.o: ${I386}/i386/genassym.c
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${CC} -c ${GEN_CFLAGS} ${I386}/i386/genassym.c
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genassym: genassym.o
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${CC} ${GEN_CFLAGS} genassym.o -o ${.TARGET}
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${SYSTEM_OBJS} genassym.o gensetdefs.o vers.o: opt_global.h
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# XXX this assumes that the options for NORMAL_C* and DRIVER_C* are identical.
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depend: assym.s param.c vnode_if.h ${BEFORE_DEPEND}
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rm -f .newdep
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mkdep -a -f .newdep ${CFLAGS} ${CFILES} ${SYSTEM_CFILES}
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mkdep -a -f .newdep ${GEN_CFLAGS} ${GEN_CFILES}
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env MKDEP_CPP="${CC} -E" \
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mkdep -a -f .newdep ${ASM_CFLAGS} ${SFILES} ${SYSTEM_SFILES}
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rm -f .depend
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mv -f .newdep .depend
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cleandepend:
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rm -f .depend
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links:
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egrep '#if' ${CFILES:Nswapkernel.c} | sed -f $S/conf/defines | \
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sed -e 's/:.*//' -e 's/\.c/.o/' | sort -u > dontlink
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echo ${CFILES:Nswapkernel.c} | tr -s ' ' '\12' | sed 's/\.c/.o/' | \
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sort -u | comm -23 - dontlink | \
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sed 's,../.*/\(.*.o\),rm -f \1;ln -s ../GENERIC/\1 \1,' > makelinks
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sh makelinks && rm -f dontlink
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tags:
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@echo "see $S/kern/Makefile for tags"
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install:
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@if [ ! -f kernel ] ; then \
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echo "You must first build your kernel before trying to install." ; \
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exit 1 ; \
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fi
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.if exists(${DESTDIR}/kernel)
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chflags noschg ${DESTDIR}/kernel
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mv ${DESTDIR}/kernel ${DESTDIR}/kernel.old
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.endif
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PATH=$${PATH}:/sbin:/usr/sbin; \
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if [ `sysctl -n kern.bootfile` = ${DESTDIR}/kernel ] ; then \
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sysctl -w kern.bootfile=${DESTDIR}/kernel.old ; \
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if [ -f /var/db/kvm_kernel.db ] ; then \
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mv -f /var/db/kvm_kernel.db /var/db/kvm_kernel.old.db ; \
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fi \
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fi
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install -c -m 555 -o root -g wheel -fschg kernel ${DESTDIR}/
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config.o:
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${NORMAL_C}
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ioconf.o:
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${NORMAL_C}
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param.c: $S/conf/param.c
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-rm -f param.c
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cp $S/conf/param.c .
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param.o:
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${NORMAL_C}
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vers.c: $S/conf/newvers.sh $S/sys/param.h ${SYSTEM_DEP}
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sh $S/conf/newvers.sh ${KERN_IDENT} ${IDENT}
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# XXX strictly, everything depends on Makefile because changes to ${PROF}
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# only appear there, but we don't handle that.
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vers.o:
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${NORMAL_C}
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.ORDER: vnode_if.c vnode_if.h
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vnode_if.c vnode_if.h: $S/kern/vnode_if.sh $S/kern/vnode_if.src
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sh $S/kern/vnode_if.sh $S/kern/vnode_if.src
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vnode_if.o:
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${NORMAL_C}
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.if exists($S/../share/mk)
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.include "$S/../share/mk/bsd.kern.mk"
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.else
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.include <bsd.kern.mk>
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.endif
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%RULES
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# DO NOT DELETE THIS LINE -- make depend uses it
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