/* $OpenBSD: ite.c,v 1.13 2001/11/25 23:23:01 miod Exp $ */ /* $NetBSD: ite.c,v 1.38 1997/03/31 07:37:25 scottr Exp $ */ /* * Copyright (c) 1996 Jason R. Thorpe. All rights reserved. * Copyright (c) 1988 University of Utah. * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah $Hdr: ite.c 1.28 92/12/20$ * * @(#)ite.c 8.2 (Berkeley) 1/12/94 */ /* * Bit-mapped display terminal emulator machine independent code. * This is a very rudimentary. Much more can be abstracted out of * the hardware dependent routines. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* prototypes for devsw entry points */ cdev_decl(ite); #define set_attr(ip, attr) ((ip)->attribute |= (attr)) #define clr_attr(ip, attr) ((ip)->attribute &= ~(attr)) /* * # of chars are output in a single itestart() call. * If this is too big, user processes will be blocked out for * long periods of time while we are emptying the queue in itestart(). * If it is too small, console output will be very ragged. */ int iteburst = 64; struct ite_data *kbd_ite = NULL; int itematch __P((struct device *, void *, void *)); void iteattach __P((struct device *, struct device *, void *)); struct cfattach ite_ca = { sizeof(struct ite_softc), itematch, iteattach }; struct cfdriver ite_cd = { NULL, "ite", DV_TTY }; /* * Terminal emulator state information, statically allocated * for the benefit of the console. */ struct ite_data ite_cn; void iteinit __P((struct ite_data *)); void iteputchar __P((int, struct ite_data *)); void itecheckwrap __P((struct ite_data *, struct itesw *)); void ite_dchar __P((struct ite_data *, struct itesw *)); void ite_ichar __P((struct ite_data *, struct itesw *)); void ite_dline __P((struct ite_data *, struct itesw *)); void ite_iline __P((struct ite_data *, struct itesw *)); void ite_clrtoeol __P((struct ite_data *, struct itesw *, int, int)); void ite_clrtoeos __P((struct ite_data *, struct itesw *)); void itestart __P((struct tty *)); /* * Primary attribute buffer to be used by the first bitmapped console * found. Secondary displays alloc the attribute buffer as needed. * Size is based on a 68x128 display, which is currently our largest. */ u_char ite_console_attributes[0x2200]; #define ite_erasecursor(ip, sp) { \ if ((ip)->flags & ITE_CURSORON) \ (*(sp)->ite_cursor)((ip), ERASE_CURSOR); \ } #define ite_drawcursor(ip, sp) { \ if ((ip)->flags & ITE_CURSORON) \ (*(sp)->ite_cursor)((ip), DRAW_CURSOR); \ } #define ite_movecursor(ip, sp) { \ if ((ip)->flags & ITE_CURSORON) \ (*(sp)->ite_cursor)((ip), MOVE_CURSOR); \ } int itematch(parent, match, aux) struct device *parent; void *match, *aux; { return (1); } void iteattach(parent, self, aux) struct device *parent, *self; void *aux; { struct ite_softc *ite = (struct ite_softc *)self; struct grf_softc *grf = (struct grf_softc *)parent; struct grfdev_attach_args *ga = aux; /* Allocate the ite_data. */ if (ga->ga_isconsole) { ite->sc_data = &ite_cn; printf(": console"); /* * We didn't know which unit this would be during * the console probe, so we have to fixup cn_dev here. */ cn_tab->cn_dev = makedev(ite_major(), self->dv_unit); } else { ite->sc_data = (struct ite_data *)malloc(sizeof(struct ite_data), M_DEVBUF, M_NOWAIT); if (ite->sc_data == NULL) { printf("\n%s: malloc for ite_data failed\n", ite->sc_dev.dv_xname); return; } bzero(ite->sc_data, sizeof(struct ite_data)); ite->sc_data->isw = (struct itesw *)ga->ga_ite; ite->sc_data->grf = (struct grf_data *)ga->ga_data; ite->sc_data->flags = ITE_ALIVE; } /* * Cross-reference the ite and the grf. */ ite->sc_grf = grf; grf->sc_ite = ite; printf("\n"); } /* * Perform functions necessary to setup device as a terminal emulator. */ int iteon(ip, flag) struct ite_data *ip; int flag; { if ((ip->flags & ITE_ALIVE) == 0) return(ENXIO); /* force ite active, overriding graphics mode */ if (flag & 1) { ip->flags |= ITE_ACTIVE; ip->flags &= ~(ITE_INGRF|ITE_INITED); } /* leave graphics mode */ if (flag & 2) { ip->flags &= ~ITE_INGRF; if ((ip->flags & ITE_ACTIVE) == 0) return(0); } ip->flags |= ITE_ACTIVE; if (ip->flags & ITE_INGRF) return(0); if (kbd_ite == NULL || kbd_ite == ip) { kbd_ite = ip; kbdenable(0); /* XXX */ } iteinit(ip); return(0); } void iteinit(ip) struct ite_data *ip; { if (ip->flags & ITE_INITED) return; ip->curx = 0; ip->cury = 0; ip->cursorx = 0; ip->cursory = 0; (*ip->isw->ite_init)(ip); ip->flags |= ITE_CURSORON; ite_drawcursor(ip, ip->isw); ip->attribute = 0; if (ip->attrbuf == NULL) ip->attrbuf = (u_char *) malloc(ip->rows * ip->cols, M_DEVBUF, M_WAITOK); bzero(ip->attrbuf, (ip->rows * ip->cols)); ip->imode = 0; ip->flags |= ITE_INITED; } /* * "Shut down" device as terminal emulator. * Note that we do not deinit the console device unless forced. * Deinit'ing the console every time leads to a very active * screen when processing /etc/rc. */ void iteoff(ip, flag) struct ite_data *ip; int flag; { if (flag & 2) { ip->flags |= ITE_INGRF; ip->flags &= ~ITE_CURSORON; } if ((ip->flags & ITE_ACTIVE) == 0) return; if ((flag & 1) || (ip->flags & (ITE_INGRF|ITE_ISCONS|ITE_INITED)) == ITE_INITED) (*ip->isw->ite_deinit)(ip); /* * XXX When the system is rebooted with "reboot", init(8) * kills the last process to have the console open. * If we don't prevent the ITE_ACTIVE bit from being * cleared, we will never see messages printed during * the process of rebooting. */ if ((flag & 2) == 0 && (ip->flags & ITE_ISCONS) == 0) ip->flags &= ~ITE_ACTIVE; } /* ARGSUSED */ int iteopen(dev, mode, devtype, p) dev_t dev; int mode, devtype; struct proc *p; { int unit = ITEUNIT(dev); struct tty *tp; struct ite_softc *sc; struct ite_data *ip; int error; int first = 0; if (unit >= ite_cd.cd_ndevs || (sc = ite_cd.cd_devs[unit]) == NULL) return (ENXIO); ip = sc->sc_data; if (ip->tty == NULL) { tp = ip->tty = ttymalloc(); tty_attach(tp); } else tp = ip->tty; if ((tp->t_state&(TS_ISOPEN|TS_XCLUDE)) == (TS_ISOPEN|TS_XCLUDE) && p->p_ucred->cr_uid != 0) return (EBUSY); if ((ip->flags & ITE_ACTIVE) == 0) { error = iteon(ip, 0); if (error) return (error); first = 1; } tp->t_oproc = itestart; tp->t_param = NULL; tp->t_dev = dev; if ((tp->t_state&TS_ISOPEN) == 0) { ttychars(tp); tp->t_iflag = TTYDEF_IFLAG; tp->t_oflag = TTYDEF_OFLAG; tp->t_cflag = CS8|CREAD; tp->t_lflag = TTYDEF_LFLAG; tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; tp->t_state = TS_ISOPEN|TS_CARR_ON; ttsetwater(tp); } error = (*linesw[tp->t_line].l_open)(dev, tp); if (error == 0) { tp->t_winsize.ws_row = ip->rows; tp->t_winsize.ws_col = ip->cols; } else if (first) iteoff(ip, 0); return (error); } /*ARGSUSED*/ int iteclose(dev, flag, mode, p) dev_t dev; int flag, mode; struct proc *p; { struct ite_softc *sc = ite_cd.cd_devs[ITEUNIT(dev)]; struct ite_data *ip = sc->sc_data; struct tty *tp = ip->tty; (*linesw[tp->t_line].l_close)(tp, flag); ttyclose(tp); iteoff(ip, 0); #if 0 tty_detach(tp); ttyfree(tp); ip->tty = (struct tty *)0; #endif return(0); } int iteread(dev, uio, flag) dev_t dev; struct uio *uio; int flag; { struct ite_softc *sc = ite_cd.cd_devs[ITEUNIT(dev)]; struct tty *tp = sc->sc_data->tty; return ((*linesw[tp->t_line].l_read)(tp, uio, flag)); } int itewrite(dev, uio, flag) dev_t dev; struct uio *uio; int flag; { struct ite_softc *sc = ite_cd.cd_devs[ITEUNIT(dev)]; struct tty *tp = sc->sc_data->tty; return ((*linesw[tp->t_line].l_write)(tp, uio, flag)); } struct tty * itetty(dev) dev_t dev; { struct ite_softc *sc = ite_cd.cd_devs[ITEUNIT(dev)]; return (sc->sc_data->tty); } int iteioctl(dev, cmd, addr, flag, p) dev_t dev; u_long cmd; caddr_t addr; int flag; struct proc *p; { struct ite_softc *sc = ite_cd.cd_devs[ITEUNIT(dev)]; struct ite_data *ip = sc->sc_data; struct tty *tp = ip->tty; int error; error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, addr, flag, p); if (error >= 0) return (error); error = ttioctl(tp, cmd, addr, flag, p); if (error >= 0) return (error); return (ENOTTY); } void itestart(tp) struct tty *tp; { int cc, s; int hiwat = 0, hadcursor = 0; struct ite_softc *sc; struct ite_data *ip; sc = ite_cd.cd_devs[ITEUNIT(tp->t_dev)]; ip = sc->sc_data; s = splkbd(); if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP)) { splx(s); return; } tp->t_state |= TS_BUSY; cc = tp->t_outq.c_cc; if (cc <= tp->t_lowat) { if (tp->t_state & TS_ASLEEP) { tp->t_state &= ~TS_ASLEEP; wakeup((caddr_t)&tp->t_outq); } selwakeup(&tp->t_wsel); } /* * Handle common (?) case */ if (cc == 1) { iteputchar(getc(&tp->t_outq), ip); } else if (cc) { /* * Limit the amount of output we do in one burst * to prevent hogging the CPU. */ if (cc > iteburst) { hiwat++; cc = iteburst; } /* * Turn off cursor while we output multiple characters. * Saves a lot of expensive window move operations. */ if (ip->flags & ITE_CURSORON) { ite_erasecursor(ip, ip->isw); ip->flags &= ~ITE_CURSORON; hadcursor = 1; } while (--cc >= 0) iteputchar(getc(&tp->t_outq), ip); if (hadcursor) { ip->flags |= ITE_CURSORON; ite_drawcursor(ip, ip->isw); } if (hiwat) { tp->t_state |= TS_TIMEOUT; timeout_add(&tp->t_rstrt_to, 1); } } tp->t_state &= ~TS_BUSY; splx(s); } int itestop(tp, flag) struct tty *tp; int flag; { return (0); } void itefilter(stat, c) char stat, c; { static int capsmode = 0; static int metamode = 0; char code, *str; struct tty *kbd_tty = kbd_ite->tty; if (kbd_tty == NULL) return; switch (c & 0xFF) { case KBD_CAPSLOCK: capsmode = !capsmode; return; case KBD_EXT_LEFT_DOWN: case KBD_EXT_RIGHT_DOWN: metamode = 1; return; case KBD_EXT_LEFT_UP: case KBD_EXT_RIGHT_UP: metamode = 0; return; } c &= KBD_CHARMASK; switch ((stat>>KBD_SSHIFT) & KBD_SMASK) { default: case KBD_KEY: if (!capsmode) { code = kbd_keymap[(int)c]; break; } /* FALLTHROUGH */ case KBD_SHIFT: code = kbd_shiftmap[(int)c]; break; case KBD_CTRL: code = kbd_ctrlmap[(int)c]; break; case KBD_CTRLSHIFT: code = kbd_ctrlshiftmap[(int)c]; break; } if (code == '\0' && (str = kbd_stringmap[(int)c]) != '\0') { while (*str) (*linesw[kbd_tty->t_line].l_rint)(*str++, kbd_tty); } else { if (metamode) code |= 0x80; (*linesw[kbd_tty->t_line].l_rint)(code, kbd_tty); } } void iteputchar(c, ip) int c; struct ite_data *ip; { struct itesw *sp = ip->isw; int n; if ((ip->flags & (ITE_ACTIVE|ITE_INGRF)) != ITE_ACTIVE) return; if (ip->escape) { doesc: switch (ip->escape) { case '&': /* Next can be a,d, or s */ if (ip->fpd++) { ip->escape = c; ip->fpd = 0; } return; case 'a': /* cursor change */ switch (c) { case 'Y': /* Only y coord. */ ip->cury = min(ip->pos, ip->rows-1); ip->pos = 0; ip->escape = 0; ite_movecursor(ip, sp); clr_attr(ip, ATTR_INV); break; case 'y': /* y coord first */ ip->cury = min(ip->pos, ip->rows-1); ip->pos = 0; ip->fpd = 0; break; case 'C': /* x coord */ ip->curx = min(ip->pos, ip->cols-1); ip->pos = 0; ip->escape = 0; ite_movecursor(ip, sp); clr_attr(ip, ATTR_INV); break; default: /* Possibly a 3 digit number. */ if (c >= '0' && c <= '9' && ip->fpd < 3) { ip->pos = ip->pos * 10 + (c - '0'); ip->fpd++; } else { ip->pos = 0; ip->escape = 0; } break; } return; case 'd': /* attribute change */ switch (c) { case 'B': set_attr(ip, ATTR_INV); break; case 'D': /* XXX: we don't do anything for underline */ set_attr(ip, ATTR_UL); break; case '@': clr_attr(ip, ATTR_ALL); break; } ip->escape = 0; return; case 's': /* keypad control */ switch (ip->fpd) { case 0: ip->hold = c; ip->fpd++; return; case 1: if (c == 'A') { switch (ip->hold) { case '0': clr_attr(ip, ATTR_KPAD); break; case '1': set_attr(ip, ATTR_KPAD); break; } } ip->hold = 0; } ip->escape = 0; return; case 'i': /* back tab */ if (ip->curx > TABSIZE) { n = ip->curx - (ip->curx & (TABSIZE - 1)); ip->curx -= n; } else ip->curx = 0; ite_movecursor(ip, sp); ip->escape = 0; return; case '3': /* clear all tabs */ goto ignore; case 'K': /* clear_eol */ ite_clrtoeol(ip, sp, ip->cury, ip->curx); ip->escape = 0; return; case 'J': /* clear_eos */ ite_clrtoeos(ip, sp); ip->escape = 0; return; case 'B': /* cursor down 1 line */ if (++ip->cury == ip->rows) { --ip->cury; ite_erasecursor(ip, sp); (*sp->ite_scroll)(ip, 1, 0, 1, SCROLL_UP); ite_clrtoeol(ip, sp, ip->cury, 0); } else ite_movecursor(ip, sp); clr_attr(ip, ATTR_INV); ip->escape = 0; return; case 'C': /* cursor forward 1 char */ ip->escape = 0; itecheckwrap(ip, sp); return; case 'A': /* cursor up 1 line */ if (ip->cury > 0) { ip->cury--; ite_movecursor(ip, sp); } ip->escape = 0; clr_attr(ip, ATTR_INV); return; case 'P': /* delete character */ ite_dchar(ip, sp); ip->escape = 0; return; case 'M': /* delete line */ ite_dline(ip, sp); ip->escape = 0; return; case 'Q': /* enter insert mode */ ip->imode = 1; ip->escape = 0; return; case 'R': /* exit insert mode */ ip->imode = 0; ip->escape = 0; return; case 'L': /* insert blank line */ ite_iline(ip, sp); ip->escape = 0; return; case 'h': /* home key */ ip->cury = ip->curx = 0; ite_movecursor(ip, sp); ip->escape = 0; return; case 'D': /* left arrow key */ if (ip->curx > 0) { ip->curx--; ite_movecursor(ip, sp); } ip->escape = 0; return; case '1': /* set tab in all rows */ goto ignore; case ESC: if ((ip->escape = c) == ESC) break; ip->fpd = 0; goto doesc; default: ignore: ip->escape = 0; return; } } switch (c &= 0x7F) { case '\n': if (++ip->cury == ip->rows) { --ip->cury; ite_erasecursor(ip, sp); (*sp->ite_scroll)(ip, 1, 0, 1, SCROLL_UP); ite_clrtoeol(ip, sp, ip->cury, 0); } else ite_movecursor(ip, sp); clr_attr(ip, ATTR_INV); break; case '\r': if (ip->curx) { ip->curx = 0; ite_movecursor(ip, sp); } break; case '\b': if (--ip->curx < 0) ip->curx = 0; else ite_movecursor(ip, sp); break; case '\t': if (ip->curx < TABEND(ip)) { n = TABSIZE - (ip->curx & (TABSIZE - 1)); ip->curx += n; ite_movecursor(ip, sp); } else itecheckwrap(ip, sp); break; case CTRL('G'): if (ip == kbd_ite) kbdbell(0); /* XXX */ break; case ESC: ip->escape = ESC; break; default: if (c < ' ' || c == DEL) break; if (ip->imode) ite_ichar(ip, sp); if ((ip->attribute & ATTR_INV) || attrtest(ip, ATTR_INV)) { attrset(ip, ATTR_INV); (*sp->ite_putc)(ip, c, ip->cury, ip->curx, ATTR_INV); } else (*sp->ite_putc)(ip, c, ip->cury, ip->curx, ATTR_NOR); ite_drawcursor(ip, sp); itecheckwrap(ip, sp); break; } } void itecheckwrap(ip, sp) struct ite_data *ip; struct itesw *sp; { if (++ip->curx == ip->cols) { ip->curx = 0; clr_attr(ip, ATTR_INV); if (++ip->cury == ip->rows) { --ip->cury; ite_erasecursor(ip, sp); (*sp->ite_scroll)(ip, 1, 0, 1, SCROLL_UP); ite_clrtoeol(ip, sp, ip->cury, 0); return; } } ite_movecursor(ip, sp); } void ite_dchar(ip, sp) struct ite_data *ip; struct itesw *sp; { if (ip->curx < ip->cols - 1) { ite_erasecursor(ip, sp); (*sp->ite_scroll)(ip, ip->cury, ip->curx + 1, 1, SCROLL_LEFT); attrmov(ip, ip->cury, ip->curx + 1, ip->cury, ip->curx, 1, ip->cols - ip->curx - 1); } attrclr(ip, ip->cury, ip->cols - 1, 1, 1); (*sp->ite_putc)(ip, ' ', ip->cury, ip->cols - 1, ATTR_NOR); ite_drawcursor(ip, sp); } void ite_ichar(ip, sp) struct ite_data *ip; struct itesw *sp; { if (ip->curx < ip->cols - 1) { ite_erasecursor(ip, sp); (*sp->ite_scroll)(ip, ip->cury, ip->curx, 1, SCROLL_RIGHT); attrmov(ip, ip->cury, ip->curx, ip->cury, ip->curx + 1, 1, ip->cols - ip->curx - 1); } attrclr(ip, ip->cury, ip->curx, 1, 1); (*sp->ite_putc)(ip, ' ', ip->cury, ip->curx, ATTR_NOR); ite_drawcursor(ip, sp); } void ite_dline(ip, sp) struct ite_data *ip; struct itesw *sp; { if (ip->cury < ip->rows - 1) { ite_erasecursor(ip, sp); (*sp->ite_scroll)(ip, ip->cury + 1, 0, 1, SCROLL_UP); attrmov(ip, ip->cury + 1, 0, ip->cury, 0, ip->rows - ip->cury - 1, ip->cols); } ite_clrtoeol(ip, sp, ip->rows - 1, 0); } void ite_iline(ip, sp) struct ite_data *ip; struct itesw *sp; { if (ip->cury < ip->rows - 1) { ite_erasecursor(ip, sp); (*sp->ite_scroll)(ip, ip->cury, 0, 1, SCROLL_DOWN); attrmov(ip, ip->cury, 0, ip->cury + 1, 0, ip->rows - ip->cury - 1, ip->cols); } ite_clrtoeol(ip, sp, ip->cury, 0); } void ite_clrtoeol(ip, sp, y, x) struct ite_data *ip; struct itesw *sp; int y, x; { (*sp->ite_clear)(ip, y, x, 1, ip->cols - x); attrclr(ip, y, x, 1, ip->cols - x); ite_drawcursor(ip, sp); } void ite_clrtoeos(ip, sp) struct ite_data *ip; struct itesw *sp; { (*sp->ite_clear)(ip, ip->cury, 0, ip->rows - ip->cury, ip->cols); attrclr(ip, ip->cury, 0, ip->rows - ip->cury, ip->cols); ite_drawcursor(ip, sp); } int ite_major() { static int itemaj, initialized; /* Only compute once. */ if (initialized) return (itemaj); initialized = 1; /* locate the major number */ for (itemaj = 0; itemaj < nchrdev; itemaj++) if (cdevsw[itemaj].d_open == iteopen) break; return (itemaj); } /* * Console functions. Console probes are done by the individual * framebuffer drivers. */ void itecninit(gp, isw) struct grf_data *gp; struct itesw *isw; { struct ite_data *ip = &ite_cn; /* * Set up required ite data and initialize ite. */ ip->isw = isw; ip->grf = gp; ip->flags = ITE_ALIVE|ITE_CONSOLE|ITE_ACTIVE|ITE_ISCONS; ip->attrbuf = ite_console_attributes; iteinit(ip); /* * Initialize the console keyboard. */ kbdcninit(); kbd_ite = ip; /* XXX */ } /*ARGSUSED*/ int itecngetc(dev) dev_t dev; { int c; int stat; c = kbdgetc(&stat); switch ((stat >> KBD_SSHIFT) & KBD_SMASK) { case KBD_SHIFT: c = kbd_cn_shiftmap[c & KBD_CHARMASK]; break; case KBD_CTRL: c = kbd_cn_ctrlmap[c & KBD_CHARMASK]; break; case KBD_KEY: c = kbd_cn_keymap[c & KBD_CHARMASK]; break; default: c = 0; break; } return(c); } /* ARGSUSED */ void itecnputc(dev, c) dev_t dev; int c; { static int paniced = 0; struct ite_data *ip = &ite_cn; if (panicstr && !paniced && (ip->flags & (ITE_ACTIVE|ITE_INGRF)) != ITE_ACTIVE) { (void) iteon(ip, 3); paniced = 1; } iteputchar(c, ip); }