With this commit, I hereby pronounce gensetdefs past its use-by date.

Replace the a.out emulation of 'struct linker_set' with something
a little more flexible.  <sys/linker_set.h> now provides macros for
accessing elements and completely hides the implementation.

The linker_set.h macros have been on the back burner in various
forms since 1998 and has ideas and code from Mike Smith (SET_FOREACH()),
John Polstra (ELF clue) and myself (cleaned up API and the conversion
of the rest of the kernel to use it).

The macros declare a strongly typed set.  They return elements with the
type that you declare the set with, rather than a generic void *.

For ELF, we use the magic ld symbols (__start_<setname> and
__stop_<setname>).  Thanks to Richard Henderson <rth@redhat.com> for the
trick about how to force ld to provide them for kld's.

For a.out, we use the old linker_set struct.

NOTE: the item lists are no longer null terminated.  This is why
the code impact is high in certain areas.

The runtime linker has a new method to find the linker set
boundaries depending on which backend format is in use.

linker sets are still module/kld unfriendly and should never be used
for anything that may be modular one day.

Reviewed by:	eivind

1 files changed, 2 insertions, 17 deletions

diff --git a/sys/conf/Makefile.ia64 b/sys/conf/Makefile.ia64
index 174c727..e52be5d 100644
--- a/sys/conf/Makefile.ia64
+++ b/sys/conf/Makefile.ia64
@@ -101,15 +101,11 @@ NORMAL_M= perl5 $S/kern/makeobjops.pl -c $<; \
 	  ${CC} -c ${CFLAGS} ${PROF} ${.PREFIX}.c
 
 GEN_CFILES= $S/$M/$M/genassym.c
-# setdef0.c and setdef1.c are intentionally
-# omitted from SYSTEM_CFILES.  They include setdefs.h, a header which
-# is generated from all of ${OBJS}.  We don't want to have to compile
-# everything just to do a make depend.
 SYSTEM_CFILES= param.c vnode_if.c hints.c config.c
 SYSTEM_SFILES= $S/$M/$M/locore.s
 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
-SYSTEM_OBJS= locore.o setdef0.o vnode_if.o ${OBJS} param.o hints.o config.o \
-	setdef1.o # hack.So ski can't cope with dynamic relocs
+SYSTEM_OBJS= locore.o vnode_if.o ${OBJS} param.o hints.o config.o \
+	# hack.So ski can't cope with dynamic relocs
 SYSTEM_LD= @${LD} ${FMT} -Bdynamic -T $S/conf/ldscript.$M \
 	-e locorestart \
 	-export-dynamic -dynamic-linker /red/herring \
@@ -188,17 +184,6 @@ hack.So: Makefile
 	${CC} ${FMT} -shared -nostdlib hack.c -o hack.So
 	rm -f hack.c
 
-.ORDER: setdefs.h setdef0.c setdef1.c
-
-setdef0.o: setdef0.c setdefs.h
-	${NORMAL_C}
-
-setdef1.o: setdef1.c setdefs.h
-	${NORMAL_C}
-
-setdef0.c setdef1.c setdefs.h: Makefile ${OBJS}
-	@OBJDUMP=${OBJDUMP} perl5 $S/kern/gensetdefs.pl ${OBJS}
-
 # this rule stops ./assym.s in .depend from causing problems
 ./assym.s: assym.s