diff options
Diffstat (limited to 'sys/arch/amiga/dev/ite_et.c')
| -rw-r--r-- | sys/arch/amiga/dev/ite_et.c | 49 |
1 files changed, 38 insertions, 11 deletions
diff --git a/sys/arch/amiga/dev/ite_et.c b/sys/arch/amiga/dev/ite_et.c index d2e275b55e1..6cfb981c122 100644 --- a/sys/arch/amiga/dev/ite_et.c +++ b/sys/arch/amiga/dev/ite_et.c @@ -1,4 +1,4 @@ -/* $NetBSD: ite_et.c,v 1.1 1996/05/19 21:06:00 veego Exp $ */ +/* $NetBSD: ite_et.c,v 1.1.4.1 1996/05/27 01:12:10 is Exp $ */ /* * Copyright (c) 1995 Ezra Story @@ -64,6 +64,7 @@ void et_putc __P((struct ite_softc *ip, int c, int dy, int dx, int mode)); void et_clear __P((struct ite_softc *ip, int sy, int sx, int h, int w)); void et_scroll __P((struct ite_softc *ip, int sy, int sx, int count, int dir)); +static void etbcopy(const void *src, void *dst, size_t len); /* @@ -198,9 +199,9 @@ et_clear(ip, sy, sx, h, w) len = w*h; SetTextPlane(ba, 0x00); - bcopy(src, dst, len); + etbcopy(src, dst, len); SetTextPlane(ba, 0x01); - bcopy(src, dst, len); + etbcopy(src, dst, len); } @@ -220,18 +221,18 @@ et_scroll(ip, sy, sx, count, dir) switch (dir) { case SCROLL_UP: - bcopy(fb, fb - (count * ip->cols), + etbcopy(fb, fb - (count * ip->cols), (ip->bottom_margin + 1 - sy) * ip->cols); break; case SCROLL_DOWN: - bcopy(fb, fb + (count * ip->cols), + etbcopy(fb, fb + (count * ip->cols), (ip->bottom_margin + 1 - (sy + count)) * ip->cols); break; case SCROLL_RIGHT: - bcopy(fb+sx, fb+sx+count, ip->cols - (sx + count)); + etbcopy(fb+sx, fb+sx+count, ip->cols - (sx + count)); break; case SCROLL_LEFT: - bcopy(fb+sx, fb+sx-count, ip->cols - sx); + etbcopy(fb+sx, fb+sx-count, ip->cols - sx); break; } @@ -239,19 +240,45 @@ et_scroll(ip, sy, sx, count, dir) switch (dir) { case SCROLL_UP: - bcopy(fb, fb - (count * ip->cols), + etbcopy(fb, fb - (count * ip->cols), (ip->bottom_margin + 1 - sy) * ip->cols); break; case SCROLL_DOWN: - bcopy(fb, fb + (count * ip->cols), + etbcopy(fb, fb + (count * ip->cols), (ip->bottom_margin + 1 - (sy + count)) * ip->cols); break; case SCROLL_RIGHT: - bcopy(fb+sx, fb+sx+count, ip->cols - (sx + count)); + etbcopy(fb+sx, fb+sx+count, ip->cols - (sx + count)); break; case SCROLL_LEFT: - bcopy(fb+sx, fb+sx-count, ip->cols - sx); + etbcopy(fb+sx, fb+sx-count, ip->cols - sx); break; } } + + +static void etbcopy(src, dst, len) + const void *src; + void *dst; + size_t len; +{ + int i; + + if (src == dst) + return; + + if (src > dst) + for (i=len; i>0; i--) { + *((char *)dst)++ = *((char *)src)++; + } + else { + ((char *)src) += len; + ((char *)dst) += len; + + for (i=len; i>0; i--){ + *--((char *)dst) = *--((char *)src); + } + } +} + #endif /* NGRFET */ |