[src/trunk]: src/sys/kern If RUMP_KERNEL_IS_LIBC is defined, alias the rump k...

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

details:   https://anonhg.NetBSD.org/src/rev/361ca9c9c786
branches:  trunk
changeset: 789701:361ca9c9c786
user:      pooka <pooka%NetBSD.org@localhost>
date:      Tue Sep 03 21:28:24 2013 +0000

description:
If RUMP_KERNEL_IS_LIBC is defined, alias the rump kernel syscalls to libc
syscall stub symbol names.  This allows running standalone programs in
OS-less environments such as directly on a Xen DomU backed only by a
libc and a rump kernel.

diffstat:

 sys/kern/makesyscalls.sh |  11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diffs (39 lines):

diff -r 651bb05ca397 -r 361ca9c9c786 sys/kern/makesyscalls.sh
--- a/sys/kern/makesyscalls.sh  Tue Sep 03 20:54:03 2013 +0000
+++ b/sys/kern/makesyscalls.sh  Tue Sep 03 21:28:24 2013 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: makesyscalls.sh,v 1.131 2013/09/03 20:54:03 pooka Exp $
+#      $NetBSD: makesyscalls.sh,v 1.132 2013/09/03 21:28:24 pooka Exp $
 #
 # Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou
 # All rights reserved.
@@ -256,6 +256,12 @@
        printf "\t__weak_alias(nam,rump_enosys);\n" > rumpcalls
        printf "#endif\n\n" > rumpcalls
 
+       printf "#ifdef RUMP_KERNEL_IS_LIBC\n" > rumpcalls
+       printf "#define rsys_aliases(what,where) \\\n" > rumpcalls
+       printf "\t__strong_alias(what,where); \\\n" > rumpcalls
+       printf "\t__strong_alias(_##what,where);\n" > rumpcalls
+       printf "#else\n#define rsys_aliases(a,b)\n#endif\n\n" > rumpcalls
+
        printf "#if\tBYTE_ORDER == BIG_ENDIAN\n" > rumpcalls
        printf "#define SPARG(p,k)\t((p)->k.be.datum)\n" > rumpcalls
        printf "#else /* LITTLE_ENDIAN, I hope dearly */\n" > rumpcalls
@@ -869,6 +875,8 @@
        printf("}\n") > rumpcalls
        printf("rsys_define(rumpns_%s%s);\n", \
            compatwrap_, funcname) > rumpcalls
+       printf("rsys_aliases(%s%s,rump___sysimpl_%s);\n", \
+           compatwrap_, funcalias, rumpfname) > rumpcalls
 
 }
 $2 == "STD" || $2 == "NODEF" || $2 == "NOARGS" || $2 == "INDIR" \
@@ -940,6 +948,7 @@
                printf("\t\tfd[1] = retval[1];\n\t}\n") > rumpcalls
                printf("\treturn error ? -1 : 0;\n}\n") > rumpcalls
                printf("rsys_define(rumpns_sys_pipe);\n") > rumpcalls
+               printf "rsys_aliases(pipe,rump_sys_pipe);\n" > rumpcalls
        }
 
        # print default rump syscall interfaces