[src/trunk]: src/sys/arch/usermode/dev support ^Z

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

details:   https://anonhg.NetBSD.org/src/rev/bf63a9501815
branches:  trunk
changeset: 772285:bf63a9501815
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Tue Dec 27 20:59:45 2011 +0000

description:
support ^Z

diffstat:

 sys/arch/usermode/dev/ttycons.c |  37 +++++++++++++++++++++++++++++++++++--
 1 files changed, 35 insertions(+), 2 deletions(-)

diffs (79 lines):

diff -r 2938ba9742af -r bf63a9501815 sys/arch/usermode/dev/ttycons.c
--- a/sys/arch/usermode/dev/ttycons.c   Tue Dec 27 20:59:24 2011 +0000
+++ b/sys/arch/usermode/dev/ttycons.c   Tue Dec 27 20:59:45 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ttycons.c,v 1.16 2011/12/26 12:29:38 jmcneill Exp $ */
+/* $NetBSD: ttycons.c,v 1.17 2011/12/27 20:59:45 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2007 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ttycons.c,v 1.16 2011/12/26 12:29:38 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ttycons.c,v 1.17 2011/12/27 20:59:45 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/conf.h>
@@ -53,6 +53,7 @@
        struct tty      *sc_tty;
        void            *sc_rd_sih;
        void            *sc_ctrlc_sih;
+       void            *sc_ctrlz_sih;
        u_char          sc_buf[1024];
 };
 
@@ -104,6 +105,8 @@
 
 static void    ttycons_ctrlc(int);
 static void    ttycons_softctrlc(void *);
+static void    ttycons_ctrlz(int);
+static void    ttycons_softctrlz(void *);
 
 static int
 ttycons_match(device_t parent, cfdata_t match, void *opaque)
@@ -145,9 +148,14 @@
            ttycons_softctrlc, sc);
        if (sc->sc_ctrlc_sih == NULL)
                panic("couldn't establish ttycons ctrlc handler\n");
+       sc->sc_ctrlz_sih = softint_establish(SOFTINT_SERIAL,
+           ttycons_softctrlz, sc);
+       if (sc->sc_ctrlz_sih == NULL)
+               panic("couldn't establish ttycons ctrlz handler\n");
 
        sigio_intr_establish(ttycons_intr, sc);
        thunk_signal(SIGINT, ttycons_ctrlc);
+       thunk_signal(SIGTSTP, ttycons_ctrlz);
        if (thunk_set_stdin_sigio(true) != 0)
                panic("couldn't enable stdin async mode");
 }
@@ -399,3 +407,28 @@
        cn_check_magic(t->t_dev, ch, ttycons_cnm_state);
        t->t_linesw->l_rint(ch, t);
 }
+
+static void
+ttycons_ctrlz(int sig)
+{
+       struct ttycons_softc *sc;
+
+       curcpu()->ci_idepth++;
+       sc = device_lookup_private(&ttycons_cd, minor(cn_tab->cn_dev));
+       if (sc) {
+               spl_intr(IPL_SERIAL, softint_schedule, sc->sc_ctrlz_sih);
+       }
+       curcpu()->ci_idepth--;
+
+}
+
+static void
+ttycons_softctrlz(void *priv)
+{
+       struct ttycons_softc *sc = priv;
+       struct tty *t = sc->sc_tty;
+       unsigned char ch = 26;  /* SUB */
+
+       cn_check_magic(t->t_dev, ch, ttycons_cnm_state);
+       t->t_linesw->l_rint(ch, t);
+}