Add save/restore cursor as pr SCO screen(HW) manpage.

Fix ESC[2J to not move cursor home
Clear mouse cutmarking on more cases.
Minor changes by me.

Submitted by:	ache

2 files changed, 30 insertions, 1 deletions

diff --git a/sys/dev/syscons/syscons.c b/sys/dev/syscons/syscons.c
index 8d693d6..7c6a532 100644
--- a/sys/dev/syscons/syscons.c
+++ b/sys/dev/syscons/syscons.c
@@ -1723,6 +1723,16 @@ scan_esc(scr_stat *scp, u_char c)
     if (scp->term.esc == 1) {
 	switch (c) {
 
+	case '7':   /* Save cursor position */
+	    scp->saved_xpos = scp->xpos;
+	    scp->saved_ypos = scp->ypos;
+	    break;
+
+	case '8':   /* Restore saved cursor position */
+	    if (scp->saved_xpos >= 0 && scp->saved_ypos >= 0)
+		move_crsr(scp, scp->saved_xpos, scp->saved_ypos);
+	    break;
+
 	case '[':   /* Start ESC [ sequence */
 	    scp->term.esc = 2;
 	    scp->term.last_param = -1;
@@ -1831,6 +1841,7 @@ scan_esc(scr_stat *scp, u_char c)
 		      scp->scr_buf + scp->xsize * scp->ysize - scp->cursor_pos);
     		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
     		mark_for_update(scp, scp->xsize * scp->ysize);
+		remove_cutmarking(scp);
 		break;
 	    case 1: /* clear from beginning of display to cursor */
 		fillw(scp->term.cur_color | scr_map[0x20],
@@ -1838,9 +1849,13 @@ scan_esc(scr_stat *scp, u_char c)
 		      scp->cursor_pos - scp->scr_buf);
     		mark_for_update(scp, 0);
     		mark_for_update(scp, scp->cursor_pos - scp->scr_buf);
+		remove_cutmarking(scp);
 		break;
 	    case 2: /* clear entire display */
-		clear_screen(scp);
+		fillw(scp->term.cur_color | scr_map[0x20], scp->scr_buf,
+		      scp->xsize * scp->ysize);
+		mark_all(scp);
+		remove_cutmarking(scp);
 		break;
 	    }
 	    break;
@@ -2049,6 +2064,16 @@ scan_esc(scr_stat *scp, u_char c)
 	    }
 	    break;
 
+	case 's':   /* Save cursor position */
+	    scp->saved_xpos = scp->xpos;
+	    scp->saved_ypos = scp->ypos;
+	    break;
+
+	case 'u':   /* Restore saved cursor position */
+	    if (scp->saved_xpos >= 0 && scp->saved_ypos >= 0)
+		move_crsr(scp, scp->saved_xpos, scp->saved_ypos);
+	    break;
+
 	case 'x':
 	    if (scp->term.num_param == 0)
 		n = 0;
@@ -2494,6 +2519,8 @@ init_scp(scr_stat *scp)
     scp->font_size = FONT_16;
     scp->xsize = COL;
     scp->ysize = ROW;
+    scp->xpos = scp->ypos = 0;
+    scp->saved_xpos = scp->saved_ypos = -1;
     scp->start = scp->xsize * scp->ysize;
     scp->end = 0;
     scp->term.esc = 0;
diff --git a/sys/dev/syscons/syscons.h b/sys/dev/syscons/syscons.h
index 9af7e26..e920b8c 100644
--- a/sys/dev/syscons/syscons.h
+++ b/sys/dev/syscons/syscons.h
@@ -143,6 +143,8 @@ typedef struct scr_stat {
 	u_short 	*scr_buf;		/* buffer when off screen */
 	int 		xpos;			/* current X position */
 	int 		ypos;			/* current Y position */
+	int             saved_xpos;             /* saved X position */
+	int             saved_ypos;             /* saved Y position */
 	int 		xsize;			/* X text size */
 	int 		ysize;			/* Y text size */
 	int 		xpixel;			/* X graphics size */