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Implement the BREAK_TO_DEBUGGER option for sab(4).

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This commit is contained in:
joerg 2004-06-08 11:58:34 +00:00
parent 75d585e46d
commit 89b27dc636
1 changed files with 11 additions and 0 deletions

11
sys/dev/sab/sab.c

@ -578,6 +578,12 @@ sabtty_intr(struct sabtty_softc *sc)
needsoft = 1;
}
#if defined(DDB) && defined(BREAK_TO_DEBUGGER)
if (sc->sc_console != 0 && (isr1 & SAB_ISR1_BRK) != 0) {
brk = 1;
}
#endif
if (isr1 & SAB_ISR1_XPR) {
if (sc->sc_ocnt > 0) {
len = min(sc->sc_ocnt, 32);
@ -675,8 +681,13 @@ sabttyopen(dev_t dev, int flags, int mode, struct thread *td)
SAB_WRITE(sc->sc_parent, SAB_IPC, sc->sc_parent->sc_ipc);
sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA;
SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0);
#if defined(DDB) && defined(BREAK_TO_DEBUGGER)
sc->sc_imr1 = SAB_IMR1_ALLS | SAB_IMR1_XDU |
SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR;
#else
sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU |
SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR;
#endif
SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1);
SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU);
sabtty_cec_wait(sc);