2002-12-03 Yoshinori K. Okuji <okuji@enbug.org>
Change the terminal structure a bit, to turn the cursor state explicitly. Suggested by Pavel Roskin. * stage2/term.h (struct term_entry): Remove the member `nocursor' and add `setcursor'. [!STAGE1_5] (console_setcursor): New prototype. [SUPPORT_HERCULES] (hercules_setcursor): Likewise. [!STAGE1_5] (console_nocursor): Removed. [SUPPORT_HERCULES] (hercules_nocursor): Likewise. * stage2/stage2.c (run_menu): Call setcursor instead of nocursor. Call setcursor with 1 before starting a boot entry. * stage2/shared.h (nocursor): Removed. (setcursor): New prototype. * stage2/hercules.c (herc_cursor_state): New variable. (herc_turn_cursor): Removed. (hercules_nocursor): Likewise. (hercules_setcursor): New function. * stage2/char_io.c (get_cmdline): Turn on the cursor at the beginning, and restore it before returning. (nocursor): Removed. (setcursor): New function. * stage2/asm.S (console_cursor_state): New variable. (console_cursor_shape): Likewise. (console_setcursor): New function. (console_nocursor): Removed. * grub/asmstub.c (console_setcursor): New function. (hercules_setcursor): Likewise. (console_nocursor): Removed. (hercules_nocursor): Likewise.
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9 changed files with 124 additions and 39 deletions
39
ChangeLog
39
ChangeLog
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@ -1,3 +1,42 @@
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2002-12-03 Yoshinori K. Okuji <okuji@enbug.org>
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Change the terminal structure a bit, to turn the cursor state
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explicitly. Suggested by Pavel Roskin.
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* stage2/term.h (struct term_entry): Remove the member
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`nocursor' and add `setcursor'.
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[!STAGE1_5] (console_setcursor): New prototype.
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[SUPPORT_HERCULES] (hercules_setcursor): Likewise.
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[!STAGE1_5] (console_nocursor): Removed.
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[SUPPORT_HERCULES] (hercules_nocursor): Likewise.
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* stage2/stage2.c (run_menu): Call setcursor instead of
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nocursor.
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Call setcursor with 1 before starting a boot entry.
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* stage2/shared.h (nocursor): Removed.
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(setcursor): New prototype.
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* stage2/hercules.c (herc_cursor_state): New variable.
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(herc_turn_cursor): Removed.
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(hercules_nocursor): Likewise.
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(hercules_setcursor): New function.
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* stage2/char_io.c (get_cmdline): Turn on the cursor at the
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beginning, and restore it before returning.
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(nocursor): Removed.
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(setcursor): New function.
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* stage2/asm.S (console_cursor_state): New variable.
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(console_cursor_shape): Likewise.
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(console_setcursor): New function.
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(console_nocursor): Removed.
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* grub/asmstub.c (console_setcursor): New function.
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(hercules_setcursor): Likewise.
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(console_nocursor): Removed.
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(hercules_nocursor): Likewise.
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2002-12-03 Yoshinori K. Okuji <okuji@enbug.org>
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* docs/grub.texi (terminfo): Fix a misleading English sentence.
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@ -743,10 +743,10 @@ console_setcolor (int normal_color, int highlight_color)
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/* Nothing to do. */
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}
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void
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console_nocursor (void)
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int
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console_setcursor (int on)
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{
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/* Nothing to do. */
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return 1;
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}
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/* Low-level disk I/O. Our stubbed version just returns a file
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@ -1266,8 +1266,8 @@ hercules_setcolor (int normal_color, int highlight_color)
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console_setcolor (normal_color, highlight_color);
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}
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void
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hercules_nocursor (void)
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int
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hercules_setcursor (int on)
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{
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console_nocursor ();
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return 1;
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}
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37
stage2/asm.S
37
stage2/asm.S
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@ -2169,26 +2169,59 @@ ENTRY(console_cls)
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/*
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* void console_nocursor (void)
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* int console_setcursor (int on)
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* BIOS call "INT 10H Function 01h" to set cursor type
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* Call with %ah = 0x01
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* %ch = cursor starting scanline
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* %cl = cursor ending scanline
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*/
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ENTRY(console_nocursor)
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console_cursor_state:
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.byte 1
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console_cursor_shape:
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.word 0
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ENTRY(console_setcursor)
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push %ebp
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push %ebx
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/* check if the standard cursor shape has already been saved */
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movw console_cursor_shape, %ax
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testw %ax, %ax
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jne 1f
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call EXT_C(prot_to_real)
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.code16
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movb $0x03, %ah
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xorb %bh, %bh
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int $0x10
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DATA32 call EXT_C(real_to_prot)
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.code32
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movw %cx, console_cursor_shape
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1:
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/* set %cx to the designated cursor shape */
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movw $0x2000, %cx
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movl 0xc(%esp), %ebx
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testl %ebx, %ebx
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jz 2f
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movw console_cursor_shape, %cx
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2:
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call EXT_C(prot_to_real)
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.code16
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movb $0x1, %ah
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int $0x10
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DATA32 call EXT_C(real_to_prot)
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.code32
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movzbl console_cursor_state, %eax
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movb %bl, console_cursor_state
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pop %ebx
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pop %ebp
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ret
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@ -43,7 +43,7 @@ struct term_entry term_table[] =
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console_cls,
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console_setcolorstate,
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console_setcolor,
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console_nocursor
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console_setcursor
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},
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#ifdef SUPPORT_SERIAL
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{
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@ -73,7 +73,7 @@ struct term_entry term_table[] =
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hercules_cls,
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hercules_setcolorstate,
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hercules_setcolor,
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hercules_nocursor
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hercules_setcursor
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},
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#endif /* SUPPORT_HERCULES */
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/* This must be the last entry. */
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@ -790,6 +790,11 @@ int
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get_cmdline (char *prompt, char *cmdline, int maxlen,
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int echo_char, int readline)
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{
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int old_cursor;
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int ret;
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old_cursor = setcursor (1);
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/* Because it is hard to deal with different conditions simultaneously,
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less functional cases are handled here. Assume that TERM_NO_ECHO
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implies TERM_NO_EDIT. */
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@ -811,7 +816,10 @@ get_cmdline (char *prompt, char *cmdline, int maxlen,
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{
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/* Return immediately if ESC is pressed. */
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if (c == 27)
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{
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setcursor (old_cursor);
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return 1;
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}
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/* Printable characters are added into CMDLINE. */
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if (c >= ' ' && c <= '~')
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@ -830,11 +838,14 @@ get_cmdline (char *prompt, char *cmdline, int maxlen,
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if (! (current_term->flags & TERM_NO_ECHO))
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grub_putchar ('\n');
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setcursor (old_cursor);
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return 0;
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}
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/* Complicated features are left to real_get_cmdline. */
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return real_get_cmdline (prompt, cmdline, maxlen, echo_char, readline);
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ret = real_get_cmdline (prompt, cmdline, maxlen, echo_char, readline);
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setcursor (old_cursor);
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return ret;
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}
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#endif /* STAGE1_5 */
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@ -1078,11 +1089,13 @@ cls (void)
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current_term->cls ();
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}
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void
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nocursor (void)
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int
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setcursor (int on)
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{
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if (current_term->nocursor)
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current_term->nocursor ();
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if (current_term->setcursor)
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return current_term->setcursor (on);
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return 1;
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}
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#endif /* ! STAGE1_5 */
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@ -33,6 +33,7 @@ static int herc_normal_color = A_NORMAL;
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static int herc_highlight_color = A_REVERSE;
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static int herc_current_color = A_NORMAL;
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static color_state herc_color_state = COLOR_STATE_STANDARD;
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static int herc_cursor_state = 1;
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/* Write a byte to a port. */
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static inline void
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@ -57,15 +58,6 @@ herc_set_cursor (void)
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outb (0x80, 0);
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}
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static void
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herc_turn_cursor (int state)
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{
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outb (HERCULES_INDEX_REG, 0x0a);
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outb (0x80, 0);
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outb (HERCULES_DATA_REG, state ? 0 : (1 << 5));
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outb (0x80, 0);
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}
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void
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hercules_putchar (int c)
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{
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herc_x = herc_y = 0;
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herc_set_cursor ();
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herc_turn_cursor (1);
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}
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int
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@ -178,10 +169,18 @@ hercules_setcolor (int normal_color, int highlight_color)
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hercules_setcolorstate (herc_color_state);
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}
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void
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hercules_nocursor (void)
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int
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hercules_setcursor (int on)
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{
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herc_turn_cursor (0);
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int old_state = herc_cursor_state;
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outb (HERCULES_INDEX_REG, 0x0a);
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outb (0x80, 0);
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outb (HERCULES_DATA_REG, on ? 0 : (1 << 5));
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outb (0x80, 0);
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herc_cursor_state = on;
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return old_state;
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}
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#endif /* SUPPORT_HERCULES */
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@ -764,8 +764,8 @@ int currticks (void);
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/* Clear the screen. */
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void cls (void);
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/* Turn off cursor. */
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void nocursor (void);
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/* Turn on/off cursor. */
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int setcursor (int on);
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/* Get the current cursor position (where 0,0 is the top left hand
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corner of the screen). Returns packed values, (RET >> 8) is x,
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if (show_menu)
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{
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init_page ();
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nocursor ();
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setcursor (0);
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if (current_term->flags & TERM_DUMB)
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print_entries_raw (num_entries, first_entry, menu_entries);
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boot_entry:
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cls ();
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setcursor (1);
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while (1)
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{
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@ -77,8 +77,8 @@ struct term_entry
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/* Set the normal color and the highlight color. The format of each
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color is VGA's. */
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void (*setcolor) (int normal_color, int highlight_color);
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/* Don't show the cursor. */
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void (*nocursor) (void);
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/* Turn on/off the cursor. */
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int (*setcursor) (int on);
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};
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/* This lists up available terminals. */
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@ -101,7 +101,7 @@ void console_gotoxy (int x, int y);
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void console_cls (void);
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void console_setcolorstate (color_state state);
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void console_setcolor (int normal_color, int highlight_color);
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void console_nocursor (void);
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int console_setcursor (int on);
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#endif
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#ifdef SUPPORT_SERIAL
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@ -121,7 +121,7 @@ void hercules_gotoxy (int x, int y);
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void hercules_cls (void);
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void hercules_setcolorstate (color_state state);
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void hercules_setcolor (int normal_color, int highlight_color);
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void hercules_nocursor (void);
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int hercules_setcursor (int on);
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#endif
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#endif /* ! GRUB_TERM_HEADER */
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