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Revert all parts done for BIOS keymap translation

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-08-19 13:32:36 +02:00
parent eb628338db
commit ed19677fe3
14 changed files with 166 additions and 347 deletions
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34
kern/i386/pc/startup.S
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@ -1147,6 +1147,11 @@ FUNCTION(grub_console_putchar)
ret
LOCAL(bypass_table):
.word 0x0100 | '\e',0x0f00 | '\t', 0x0e00 | '\b', 0x1c00 | '\r'
.word 0x1c00 | '\n'
LOCAL(bypass_table_end):
/*
* int grub_console_getkey (void)
* BIOS call "INT 16H Function 00H" to read character from keyboard
@ -1180,17 +1185,39 @@ FUNCTION(grub_console_getkey)
movb $0, %ah
int $0x16
xorl %edx, %edx
movw %ax, %dx /* real_to_prot uses %eax */
DATA32 call real_to_prot
.code32
movw %dx, %ax
movl $0xff, %eax
testl %eax, %edx
jz 1f
andl %edx, %eax
cmp %eax, 0x20
ja 2f
movl %edx, %eax
leal LOCAL(bypass_table), %esi
movl $((LOCAL(bypass_table_end) - LOCAL(bypass_table)) / 2), %ecx
repne cmpsw
jz 3f
addl $('a' - 1 | GRUB_TERM_CTRL), %eax
jmp 2f
3:
andl $0xff, %eax
jmp 2f
1: movl %edx, %eax
shrl $8, %eax
orl $GRUB_TERM_EXTENDED, %eax
2:
popl %ebp
ret
/*
* int grub_console_checkkey (void)
* if there is a character pending, return it; otherwise return -1
@ -1216,6 +1243,7 @@ FUNCTION(grub_console_checkkey)
jz notpending
xorl %edx, %edx
movw %ax, %dx
DATA32 jmp pending
@ -1226,8 +1254,6 @@ pending:
DATA32 call real_to_prot
.code32
movl %edx, %eax
popl %ebp
ret