[src/trunk]: src/sys/rump Support generating support for Sun ld.

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bd10b681b9a7
branches:  trunk
changeset: 785469:bd10b681b9a7
user:      pooka <pooka%NetBSD.org@localhost>
date:      Fri Mar 15 12:12:16 2013 +0000

description:
Support generating support for Sun ld.

diffstat:

 sys/rump/sunldgen.sh |  38 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)

diffs (42 lines):

diff -r 0fdddf3eca89 -r bd10b681b9a7 sys/rump/sunldgen.sh
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/rump/sunldgen.sh      Fri Mar 15 12:12:16 2013 +0000
@@ -0,0 +1,38 @@
+#!/bin/sh
+#
+#       $NetBSD: sunldgen.sh,v 1.1 2013/03/15 12:12:16 pooka Exp $
+#
+
+# To support the Sun linker we need to make it behave like the GNU linker
+# for orphaned sections.  That means generating __start/__stop symbols
+# for them and that means some nopoly-atheist-withoutfood level trickery.
+# We enumerate all the section names we wish to generate symbols for.
+# The good news is that it's unlikely for NetBSD to grow any more
+# link sets, and even if it does, it'll be a build-time failure
+# on Sun platforms so it's easy to catch and mend the list below.
+
+LINKSETS='rump_components evcnts prop_linkpools modules sysctl_funcs
+         bufq_strats domains dkwedge_methods ieee80211_funcs'
+       
+exec 1> ldscript_sun.rump
+printf '# $NetBSD: sunldgen.sh,v 1.1 2013/03/15 12:12:16 pooka Exp $\n\n$mapfile_version 2\nLOAD_SEGMENT rumpkern_linksets {'
+for lset in ${LINKSETS}; do
+       printf '\n\tASSIGN_SECTION { IS_NAME= link_set_start_%s };\n' $lset
+       printf '\tASSIGN_SECTION { IS_NAME= link_set_%s };\n' $lset
+       printf '\tASSIGN_SECTION { IS_NAME= link_set_stop_%s };\n' $lset
+       printf '\tOS_ORDER+= link_set_start_%s\n' $lset
+       printf '\t    link_set_%s\n' $lset
+       printf '\t    link_set_stop_%s;\n' $lset
+done
+echo '};'
+
+exec 1> linksyms_sun.c
+printf '/* $NetBSD: sunldgen.sh,v 1.1 2013/03/15 12:12:16 pooka Exp $ */\n\n'
+for lset in ${LINKSETS}; do
+       printf 'int __start_link_set_%s[0]\n' $lset
+       printf '\t__attribute__((__section__("link_set_start_%s")));\n' $lset
+       printf 'int __link_set_dummy_%s[0]\n' $lset
+       printf '\t__attribute__((__section__("link_set_%s")));\n' $lset
+       printf 'int __stop_link_set_%s[0]\n' $lset
+       printf '\t__attribute__((__section__("link_set_stop_%s")));\n\n' $lset
+done