diff options
Diffstat (limited to 'sys/arch/i386/isa/pcvt/pcvt_out.c')
| -rw-r--r-- | sys/arch/i386/isa/pcvt/pcvt_out.c | 86 |
1 files changed, 83 insertions, 3 deletions
diff --git a/sys/arch/i386/isa/pcvt/pcvt_out.c b/sys/arch/i386/isa/pcvt/pcvt_out.c index e6e9d232d20..734e19f2426 100644 --- a/sys/arch/i386/isa/pcvt/pcvt_out.c +++ b/sys/arch/i386/isa/pcvt/pcvt_out.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pcvt_out.c,v 1.7 1999/01/13 07:26:02 niklas Exp $ */ +/* $OpenBSD: pcvt_out.c,v 1.8 1999/09/06 00:12:40 aaron Exp $ */ /* * Copyright (c) 1992, 1995 Hellmuth Michaelis and Joerg Wunsch. @@ -80,6 +80,9 @@ static void wrfkl ( int num, u_char *string, struct video_state *svsp ); static void writefkl ( int num, u_char *string, struct video_state *svsp ); static __inline void write_char (struct video_state *, u_short, u_short ch); +#ifdef PCVT_SCROLLBACK +static int check_scrollback ( struct video_state *svsp ); +#endif /*---------------------------------------------------------------------------* * do character set transformation and write to display memory (inline) @@ -147,6 +150,9 @@ void sput (u_char *s, U_char kernel, int len, int page) { register struct video_state *svsp; +#ifdef PCVT_SCROLLBACK + int extra; +#endif u_short attrib; u_short ch; @@ -269,6 +275,20 @@ sput (u_char *s, U_char kernel, int len, int page) case 0x0a: /* LF */ case 0x0b: /* VT */ case 0x0c: /* FF */ +#ifdef PCVT_SCROLLBACK + if (check_scrollback(svsp)) + { + extra = (svsp->cur_offset % + svsp->maxcol) ? + svsp->col : 0; + bcopy(svsp->Crtat + + svsp->cur_offset - extra, + svsp->Scrollback + + (svsp->scr_offset * + svsp->maxcol), + svsp->maxcol * CHR); + } +#endif if(svsp->lnm) { svsp->cur_offset -= svsp->col; @@ -421,6 +441,18 @@ sput (u_char *s, U_char kernel, int len, int page) svsp->cur_offset++; svsp->col = 0; svsp->lastchar = 0; +#ifdef PCVT_SCROLLBACK + if (check_scrollback(svsp)) + { + bcopy(svsp->Crtat + + svsp->cur_offset - + svsp->maxcol, + svsp->Scrollback + + (svsp->scr_offset * + svsp->maxcol), + svsp->maxcol * CHR); + } +#endif check_scroll(svsp); } @@ -813,6 +845,11 @@ sput (u_char *s, U_char kernel, int len, int page) case 'K': /* erase line */ vt_clreol(svsp); svsp->state = STATE_INIT; +#ifdef PCVT_SCROLLBACK + if (svsp->scr_offset > 0 && + svsp == vsp) + svsp->scr_offset--; +#endif break; case 'L': /* insert line */ @@ -1094,6 +1131,11 @@ vt_coldinit(void) { svsp->Crtat = Crtat; /* all same until malloc'ed */ svsp->Memory = Crtat; /* until malloc'ed */ +#ifdef PCVT_SCROLLBACK + svsp->Scrollback = 0; /* until malloc'ed */ + svsp->scr_offset = 0; /* scrollback offset (lines) */ + svsp->scrolling = 0; /* current scrollback page */ +#endif svsp->cur_offset = 0; /* cursor offset */ svsp->c_attr = user_attr; /* non-kernel attributes */ svsp->bell_on = 1; /* enable bell */ @@ -1128,6 +1170,9 @@ vt_coldinit(void) #endif /* PCVT_24LINESDEF */ svsp->screen_rowsize = 25; /* default 25 rows on screen */ +#ifdef PCVT_SCROLLBACK + svsp->max_off = svsp->screen_rowsize * SCROLLBACK_PAGES - 1; +#endif svsp->scrr_beg = 0; /* scrolling region begin row*/ svsp->scrr_len = svsp->screen_rows; /* scrolling region length*/ svsp->scrr_end = svsp->scrr_len - 1;/* scrolling region end */ @@ -1361,6 +1406,15 @@ vt_coldmalloc(void) MAXROW_VGA * MAXCOL_VGA * CHR; } +#ifdef PCVT_SCROLLBACK + if ((Scrollbuffer = (u_short *)malloc(vs[0].maxcol * + vs[0].screen_rowsize * SCROLLBACK_PAGES * CHR * 2, M_DEVBUF, + M_WAITOK)) == NULL) + { + printf("pcvt: scrollback memory malloc failed\n"); + } +#endif + for(nscr = 0; nscr < PCVT_NSCREENS; nscr++) { if((vs[nscr].Memory = @@ -1372,6 +1426,9 @@ vt_coldmalloc(void) PCVT_NSCREENS, nscr); break; } +#ifdef PCVT_SCROLLBACK + vs[nscr].Scrollback = Scrollbuffer; +#endif if(nscr != 0) { vs[nscr].Crtat = vs[nscr].Memory; @@ -1423,6 +1480,29 @@ check_scroll(struct video_state *svsp) } } +#ifdef PCVT_SCROLLBACK +static int +check_scrollback(struct video_state *svsp) +{ + /* still waiting for scrollback memory or not on current page */ + if (!svsp->Scrollback || svsp != vsp) + return 0; + + /* remove first line of scrollback buffer to make room for new line */ + if (svsp->scr_offset == svsp->max_off) + { + bcopy(svsp->Scrollback + svsp->maxcol, svsp->Scrollback, + svsp->maxcol * svsp->max_off * CHR); + } + else + { + /* still room left, increase scroll offset (lines) */ + svsp->scr_offset++; + } + return 1; +} +#endif + /*---------------------------------------------------------------------------* * write to one user function key label *---------------------------------------------------------------------------*/ @@ -1877,8 +1957,8 @@ vt_col(struct video_state *svsp, int cols) clr_parms(svsp); /* escape parameter init */ svsp->state = STATE_INIT; /* initial state */ - svsp->col = 0; /* init row */ - svsp->row = 0; /* init col */ + svsp->col = 0; /* init col */ + svsp->row = 0; /* init row */ svsp->cur_offset = 0; /* cursor offset init */ svsp->sc_flag = 0; /* invalidate saved cursor position */ svsp->scrr_beg = 0; /* reset scrolling region */ |