Unbreak doscmd after the sigset_t change:

doscmd heavily depends on struct sigcontext which luckily is mostly passed
between functions as usion regcontext_t. By redefining union regcontext_t in
terms of mcontext_t almost all bases are covered.

It also seems to me that doscmd was in a transitional state. The redundant
definitions made it difficult to get a clear overview and could easily cause
oversight. To make sure my changes were ok, I went as far as to complete the
transition. It was not exactly necessary, but I expect to have to come back
here some more ("whistle" if I'm wrong :-).

1 files changed, 2 insertions, 2 deletions

diff --git a/usr.bin/doscmd/signal.c b/usr.bin/doscmd/signal.c
index 7041597..297bf37 100644
--- a/usr.bin/doscmd/signal.c
+++ b/usr.bin/doscmd/signal.c
@@ -66,9 +66,9 @@ sanity_check(struct sigframe *sf)
 static void
 generichandler(struct sigframe sf)
 {
-    if (sf.sf_siginfo.si_sc.sc_efl & PSL_VM) {
+    if (sf.sf_uc.uc_mcontext.mc_tf.tf_eflags & PSL_VM) {
 	saved_sigframe = &sf;
-	saved_regcontext = (regcontext_t *)&(sf.sf_siginfo.si_sc);
+	saved_regcontext = (regcontext_t *)&(sf.sf_uc.uc_mcontext);
 	saved_valid = 1;
 	if (handler[sf.sf_signum])
 	    (*handler[sf.sf_signum])(&sf);