From d820f3e3ba1e6e29ce2bf7dcd9ec368578f3f3d7 Mon Sep 17 00:00:00 2001
From: Miod Vallat <miod@cvs.openbsd.org>
Date: Sun, 9 Aug 2009 23:04:50 +0000
Subject: Introduce option DDB_STRUCT. Kernels compiled with this option
 (except on a few arches where toolchain limitations apply) will embed some
 symbolic information about the various structs used within the kernel, and
 have new ddb commands allowing struct display and some useful information
 gathering. Kernel rodata increase varies accross platforms from ~150KB to
 ~300KB. This option is not enabled by default.

---
 sys/arch/socppc/conf/Makefile.socppc | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

(limited to 'sys/arch/socppc')

diff --git a/sys/arch/socppc/conf/Makefile.socppc b/sys/arch/socppc/conf/Makefile.socppc
index 0d5b92fc285..b13f33fb9be 100644
--- a/sys/arch/socppc/conf/Makefile.socppc
+++ b/sys/arch/socppc/conf/Makefile.socppc
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile.socppc,v 1.3 2009/08/09 21:33:39 miod Exp $
+#	$OpenBSD: Makefile.socppc,v 1.4 2009/08/09 23:04:49 miod Exp $
 #
 # Makefile for OpenBSD PowerPC
 #
@@ -51,6 +51,12 @@ AFLAGS=		-D_LOCORE -Wa,-many
 LINKFLAGS=	-N -Ttext 200000 -e start --warn-common
 STRIPFLAGS=	-g -X -x
 
+.if ${IDENT:M-DDDB_STRUCT}
+DB_STRUCTINFO=	db_structinfo.h
+.else
+DB_STRUCTINFO=
+.endif
+
 HOSTCC?=	${CC}
 HOSTED_CPPFLAGS=${CPPFLAGS:S/^-nostdinc$//}
 HOSTED_CFLAGS=	${CFLAGS}
@@ -126,7 +132,7 @@ newvers: ${SYSTEM_DEP} ${SYSTEM_SWAP_DEP}
 
 clean::
 	rm -f eddep *bsd bsd.gdb tags *.[io] [a-z]*.s \
-		[Ee]rrs linterrs makelinks assym.h
+	    [Ee]rrs linterrs makelinks assym.h ${DB_STRUCTINFO}
 
 lint:
 	@lint -hbxncez -DGENERIC -Dvolatile= ${CPPFLAGS} -UKGDB ${CFILES} \
@@ -147,7 +153,7 @@ links:
 SRCS=	${SOCPPC}/socppc/locore.S \
 	param.c ioconf.c ${CFILES} ${SFILES}
 depend:: .depend
-.depend: ${SRCS} assym.h param.c
+.depend: ${SRCS} assym.h param.c ${DB_STRUCTINFO}
 	${MKDEP} ${AFLAGS} ${CPPFLAGS} ${SOCPPC}/socppc/locore.S
 	${MKDEP} -a ${CFLAGS} ${CPPFLAGS} param.c ioconf.c ${CFILES}
 .if ${SFILES} != ""
@@ -159,6 +165,11 @@ depend:: .depend
 	    < assym.dep >> .depend
 	@rm -f assym.dep
 
+db_structinfo.h: $S/ddb/db_structinfo.c $S/ddb/parse_structinfo.awk
+	${CC} ${CFLAGS} ${CPPFLAGS} -gstabs -c $S/ddb/db_structinfo.c
+	objdump -g db_structinfo.o | awk -f $S/ddb/parse_structinfo.awk > $@
+	rm -f db_structinfo.o
+
 # depend on root or device configuration
 autoconf.o conf.o: Makefile
 
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