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Diffstat (limited to 'contrib/syslinux/syslinux-4.03/core/conio.inc')
| -rw-r--r-- | contrib/syslinux/syslinux-4.03/core/conio.inc | 431 |
1 files changed, 0 insertions, 431 deletions
diff --git a/contrib/syslinux/syslinux-4.03/core/conio.inc b/contrib/syslinux/syslinux-4.03/core/conio.inc deleted file mode 100644 index b450502..0000000 --- a/contrib/syslinux/syslinux-4.03/core/conio.inc +++ /dev/null @@ -1,431 +0,0 @@ -;; ----------------------------------------------------------------------- -;; -;; Copyright 1994-2008 H. Peter Anvin - All Rights Reserved -;; Copyright 2009 Intel Corporation; author: H. Peter Anvin -;; -;; This program is free software; you can redistribute it and/or modify -;; it under the terms of the GNU General Public License as published by -;; the Free Software Foundation, Inc., 53 Temple Place Ste 330, -;; Boston MA 02111-1307, USA; either version 2 of the License, or -;; (at your option) any later version; incorporated herein by reference. -;; -;; ----------------------------------------------------------------------- - -;; -;; conio.inc -;; -;; Console I/O code, except: -;; writechr, writestr_early - module-dependent -;; writestr, crlf - writestr.inc -;; writehex* - writehex.inc -;; - -; -; loadkeys: Load a LILO-style keymap; file is open on the top of the -; getc stack. -; - section .text16 - -loadkeys: - mov cx,256 - mov di,trackbuf - call readc - jc .done ; EOF already? - - ; Make sure we are at EOF now... - call getc - jnc .done ; We should be at EOF now! - - ; It was okay, we can now move it into the KbdMap - mov si,trackbuf - mov di,KbdMap - mov cx,256 >> 2 - rep movsd - -.done: - call close - ret - -; -; get_msg_file: Load a text file and write its contents to the screen, -; interpreting color codes. Call with the file already -; on the top of the open/getc stack. -; -; Assumes CS == DS == ES. -; -get_msg_file: - mov byte [TextAttribute],07h ; Default grey on white - mov byte [DisplayMask],07h ; Display text in all modes - call msg_initvars - -print_msg_file: -.getc: - call getc - jc .done - cmp al,1Ah ; DOS EOF? - je .done - movzx cx,byte [UsingVGA] - and cl,01h - inc cx ; CL <- 01h = text mode, - ; 02h = graphics mode - call [NextCharJump] ; Do what shall be done - jmp .getc -.done: - jmp close ; Tailcall! - -msg_putchar: ; Normal character - cmp al,0Fh ; ^O = color code follows - je msg_ctrl_o - cmp al,0Dh ; Ignore <CR> - je msg_ignore - cmp al,0Ah ; <LF> = newline - je msg_newline - cmp al,0Ch ; <FF> = clear screen - je msg_formfeed - cmp al,07h ; <BEL> = beep - je msg_beep - cmp al,19h ; <EM> = return to text mode - je msg_novga - cmp al,18h ; <CAN> = VGA filename follows - je msg_vga - jnb .not_modectl - cmp al,10h ; 10h to 17h are mode controls - jae msg_modectl -.not_modectl: - -msg_normal: call write_serial_displaymask ; Write to serial port - test [DisplayMask],cl - jz msg_ignore ; Not screen - test byte [DisplayCon],01h - jz msg_ignore - mov bl,[TextAttribute] - mov bh,[BIOS_page] - mov ah,09h ; Write character/attribute - mov cx,1 ; One character only - int 10h ; Write to screen - mov al,[CursorCol] - inc ax - cmp al,[VidCols] - ja msg_line_wrap ; Screen wraparound - mov [CursorCol],al - -msg_gotoxy: mov bh,[BIOS_page] - mov dx,[CursorDX] - mov ah,02h ; Set cursor position - int 10h -msg_ignore: ret - -msg_beep: mov ax,0E07h ; Beep - xor bx,bx - int 10h - ret - -msg_ctrl_o: ; ^O = color code follows - mov word [NextCharJump],msg_setbg - ret -msg_newline: ; Newline char or end of line - mov si,crlf_msg - call write_serial_str_displaymask -msg_line_wrap: ; Screen wraparound - test [DisplayMask],cl - jz msg_ignore - mov byte [CursorCol],0 - mov al,[CursorRow] - inc ax - cmp al,[VidRows] - ja msg_scroll - mov [CursorRow],al - jmp short msg_gotoxy -msg_scroll: xor cx,cx ; Upper left hand corner - mov dx,[ScreenSize] - mov [CursorRow],dh ; New cursor at the bottom - mov bh,[ScrollAttribute] - mov ax,0601h ; Scroll up one line - int 10h - jmp short msg_gotoxy -msg_formfeed: ; Form feed character - mov si,crff_msg - call write_serial_str_displaymask - test [DisplayMask],cl - jz msg_ignore - xor cx,cx - mov [CursorDX],cx ; Upper lefthand corner - mov dx,[ScreenSize] - mov bh,[TextAttribute] - mov ax,0600h ; Clear screen region - int 10h - jmp msg_gotoxy -msg_setbg: ; Color background character - call unhexchar - jc msg_color_bad - shl al,4 - test [DisplayMask],cl - jz .dontset - mov [TextAttribute],al -.dontset: - mov word [NextCharJump],msg_setfg - ret -msg_setfg: ; Color foreground character - call unhexchar - jc msg_color_bad - test [DisplayMask],cl - jz .dontset - or [TextAttribute],al ; setbg set foreground to 0 -.dontset: - jmp short msg_putcharnext -msg_vga: - mov word [NextCharJump],msg_filename - mov di, VGAFileBuf - jmp short msg_setvgafileptr - -msg_color_bad: - mov byte [TextAttribute],07h ; Default attribute -msg_putcharnext: - mov word [NextCharJump],msg_putchar - ret - -msg_filename: ; Getting VGA filename - cmp al,0Ah ; <LF> = end of filename - je msg_viewimage - cmp al,' ' - jbe msg_ret ; Ignore space/control char - mov di,[VGAFilePtr] - cmp di,VGAFileBufEnd - jnb msg_ret - mov [di],al ; Can't use stosb (DS:) - inc di -msg_setvgafileptr: - mov [VGAFilePtr],di -msg_ret: ret - -msg_novga: - call vgaclearmode - jmp short msg_initvars - -msg_viewimage: - mov si,[VGAFilePtr] - mov byte [si],0 ; Zero-terminate filename - mov si,VGAFileBuf - mov di,VGAFileMBuf - pm_call pm_mangle_name - call core_open - jz msg_putcharnext ; Not there - call vgadisplayfile - ; Fall through - - ; Subroutine to initialize variables, also needed - ; after loading a graphics file -msg_initvars: - pusha - mov bh,[BIOS_page] - mov ah,03h ; Read cursor position - int 10h - mov [CursorDX],dx - popa - jmp short msg_putcharnext ; Initialize state machine - -msg_modectl: - and al,07h - mov [DisplayMask],al - jmp short msg_putcharnext - -; -; write_serial: If serial output is enabled, write character on serial port -; write_serial_displaymask: d:o, but ignore if DisplayMask & 04h == 0 -; -write_serial_displaymask: - test byte [DisplayMask], 04h - jz write_serial.end -write_serial: - pushfd - pushad - mov bx,[SerialPort] - and bx,bx - je .noserial - push ax - mov ah,[FlowInput] -.waitspace: - ; Wait for space in transmit register - lea dx,[bx+5] ; DX -> LSR - in al,dx - test al,20h - jz .waitspace - - ; Wait for input flow control - inc dx ; DX -> MSR - in al,dx - and al,ah - cmp al,ah - jne .waitspace -.no_flow: - - xchg dx,bx ; DX -> THR - pop ax - slow_out dx,al ; Send data -.noserial: popad - popfd -.end: ret - -; -; write_serial_str: write_serial for strings -; write_serial_str_displaymask: d:o, but ignore if DisplayMask & 04h == 0 -; -write_serial_str_displaymask: - test byte [DisplayMask], 04h - jz write_serial_str.end - -write_serial_str: -.loop lodsb - and al,al - jz .end - call write_serial - jmp short .loop -.end: ret - -; -; pollchar: check if we have an input character pending (ZF = 0) -; -pollchar: - pushad - mov ah,11h ; Poll keyboard - int 16h - jnz .done ; Keyboard response - mov dx,[SerialPort] - and dx,dx - jz .done ; No serial port -> no input - mov ax,[SerialTail] ; Already-queued input? - cli - cmp ax,[SerialHead] - jne .done_sti ; If so, return ZF = 0 - add dx,5 ; DX -> LSR - in al,dx - test al,1 ; ZF = 0 if data pending - jz .done_sti - inc dx ; DX -> MSR - mov ah,[FlowIgnore] ; Required status bits - in al,dx - and al,ah - cmp al,ah - setne al - dec al ; Set ZF = 0 if equal -.done_sti: sti -.done: popad - ret - -; -; getchar: Read a character from keyboard or serial port -; -getchar.sti_again: - sti -getchar: -.again: - call do_idle - mov ah,11h ; Poll keyboard - int 16h - jnz .kbd ; Keyboard input? - mov bx,[SerialPort] - and bx,bx - jz .again - mov ax,[SerialTail] - cli - cmp ax,[SerialHead] - jne .serial_queued - lea dx,[bx+5] ; DX -> LSR - in al,dx - test al,1 - jz .sti_again - inc dx ; DX -> MSR - mov ah,[FlowIgnore] - in al,dx - and al,ah - cmp al,ah - jne .sti_again -.serial: xor ah,ah ; Avoid confusion - mov dx,bx ; Data port - in al,dx ; Read data - sti - jmp .done -.serial_queued: - sti ; We already know we'll consume data - xchg bx,ax - push ds - mov ax,aux_seg + (aux.serial >> 4) - mov ds,ax - mov al,[bx] - pop ds - inc bx - and bx,serial_buf_size-1 - mov [SerialTail],bx - jmp .done - -.kbd: mov ah,10h ; Get keyboard input - int 16h - cmp al,0E0h - jnz .not_ext - xor al,al -.not_ext: - and al,al - jz .func_key - mov bx,KbdMap ; Convert character sets - xlatb -.func_key: -.done: - jmp reset_idle ; Character received - -%ifdef DEBUG_TRACERS -; -; debug hack to print a character with minimal code impact -; -debug_tracer: pushad - pushfd - mov bp,sp - mov bx,[bp+9*4] ; Get return address - mov al,[cs:bx] ; Get data byte - inc word [bp+9*4] ; Return to after data byte - call writechr - popfd - popad - ret -%endif ; DEBUG_TRACERS - - section .data16 -%if IS_ISOLINUX == 0 ; Defined elsewhere for ISOLINUX -crlf_msg db CR, LF -null_msg db 0 -%endif -crff_msg db CR, FF, 0 - - section .config - ; This is a word to pc_setint16 can set it -DisplayCon dw 01h ; Console display enabled - -ScrollAttribute db 07h ; Grey on white (normal text color) - - section .bss16 - alignb 2 -NextCharJump resw 1 ; Routine to interpret next print char -CursorDX equ $ -CursorCol resb 1 ; Cursor column for message file -CursorRow resb 1 ; Cursor row for message file -ScreenSize equ $ -VidCols resb 1 ; Columns on screen-1 -VidRows resb 1 ; Rows on screen-1 - -; Serial console stuff; don't put this in .config becasue we don't want -; loading a new config file to undo this setting. - section .data16 - alignz 4 -SerialPort dw 0 ; Serial port base (or 0 for no serial port) -BaudDivisor dw 115200/9600 ; Baud rate divisor -FlowControl equ $ -FlowOutput db 0 ; Outputs to assert for serial flow -FlowInput db 0 ; Input bits for serial flow -FlowIgnore db 0 ; Ignore input unless these bits set -FlowDummy db 0 ; Unused - - section .bss16 -TextAttribute resb 1 ; Text attribute for message file -DisplayMask resb 1 ; Display modes mask - - section .text16 -%include "serirq.inc" |