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Remove checkkey on term level

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-08-23 12:07:49 +02:00
parent 7ae3eb6232
commit df2174dded
13 changed files with 65 additions and 240 deletions
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58
kern/i386/pc/startup.S
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@ -1154,6 +1154,16 @@ LOCAL(bypass_table_end):
/*
* int grub_console_getkey (void)
* if there is a character pending, return it; otherwise return -1
* BIOS call "INT 16H Function 01H" to check whether a character is pending
* Call with %ah = 0x1
* Return:
* If key waiting to be input:
* %ah = keyboard scan code
* %al = ASCII character
* Zero flag = clear
* else
* Zero flag = set
* BIOS call "INT 16H Function 00H" to read character from keyboard
* Call with %ah = 0x0
* Return: %ah = keyboard scan code
@ -1173,14 +1183,9 @@ FUNCTION(grub_console_getkey)
* INT 16/AH = 1 before calling INT 16/AH = 0.
*/
1:
movb $1, %ah
int $0x16
jnz 2f
hlt
jmp 1b
2:
jz notpending
movb $0, %ah
int $0x16
@ -1217,47 +1222,12 @@ FUNCTION(grub_console_getkey)
popl %ebp
ret
/*
* int grub_console_checkkey (void)
* if there is a character pending, return it; otherwise return -1
* BIOS call "INT 16H Function 01H" to check whether a character is pending
* Call with %ah = 0x1
* Return:
* If key waiting to be input:
* %ah = keyboard scan code
* %al = ASCII character
* Zero flag = clear
* else
* Zero flag = set
*/
FUNCTION(grub_console_checkkey)
pushl %ebp
xorl %edx, %edx
call prot_to_real /* enter real mode */
notpending:
.code16
movb $0x1, %ah
int $0x16
jz notpending
xorl %edx, %edx
movw %ax, %dx
DATA32 jmp pending
notpending:
xorl %edx, %edx
decl %edx
pending:
DATA32 call real_to_prot
.code32
movl %edx, %eax
popl %ebp
ret
decl %eax
jmp 2b
/*