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linux_lab_os_exp2/linux/kernel/chr_drv/keyboard.2.s

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2 years ago
# 1 "keyboard.S"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "keyboard.S"
# 1 "../../include/linux/config.h" 1
# 36 "../../include/linux/config.h"
# 47 "../../include/linux/config.h"
# 14 "keyboard.S" 2
.text
.globl keyboard_interrupt
size = 1024
head = 4
tail = 8
proc_list = 12
buf = 16
mode: .byte 0
leds: .byte 2
e0: .byte 0
keyboard_interrupt:
pushl %eax
pushl %ebx
pushl %ecx
pushl %edx
push %ds
push %es
movl $0x10,%eax
mov %ax,%ds
mov %ax,%es
xor %al,%al
inb $0x60,%al
cmpb $0xe0,%al
je set_e0
cmpb $0xe1,%al
je set_e1
call key_table(,%eax,4)
movb $0,e0
e0_e1: inb $0x61,%al
jmp 1f
1: jmp 1f
1: orb $0x80,%al
jmp 1f
1: jmp 1f
1: outb %al,$0x61
jmp 1f
1: jmp 1f
1: andb $0x7F,%al
outb %al,$0x61
movb $0x20,%al
outb %al,$0x20
pushl $0
call do_tty_interrupt
addl $4,%esp
pop %es
pop %ds
popl %edx
popl %ecx
popl %ebx
popl %eax
iret
set_e0: movb $1,e0
jmp e0_e1
set_e1: movb $2,e0
jmp e0_e1
put_queue:
pushl %ecx
pushl %edx
movl table_list,%edx # read-queue for console
movl head(%edx),%ecx
1: movb %al,buf(%edx,%ecx)
incl %ecx
andl $size-1,%ecx
cmpl tail(%edx),%ecx # buffer full - discard everything
je 3f
shrdl $8,%ebx,%eax
je 2f
shrl $8,%ebx
jmp 1b
2: movl %ecx,head(%edx)
movl proc_list(%edx),%ecx
testl %ecx,%ecx
je 3f
movl $0,(%ecx)
3: popl %edx
popl %ecx
ret
ctrl: movb $0x04,%al
jmp 1f
alt: movb $0x10,%al
1: cmpb $0,e0
je 2f
addb %al,%al
2: orb %al,mode
ret
unctrl: movb $0x04,%al
jmp 1f
unalt: movb $0x10,%al
1: cmpb $0,e0
je 2f
addb %al,%al
2: notb %al
andb %al,mode
ret
lshift:
orb $0x01,mode
ret
unlshift:
andb $0xfe,mode
ret
rshift:
orb $0x02,mode
ret
unrshift:
andb $0xfd,mode
ret
caps: testb $0x80,mode
jne 1f
xorb $4,leds
xorb $0x40,mode
orb $0x80,mode
set_leds:
call kb_wait
movb $0xed,%al
outb %al,$0x60
call kb_wait
movb leds,%al
outb %al,$0x60
ret
uncaps: andb $0x7f,mode
ret
scroll:
xorb $1,leds
jmp set_leds
num: xorb $2,leds
jmp set_leds
cursor:
subb $0x47,%al
jb 1f
cmpb $12,%al
ja 1f
jne cur2
testb $0x0c,mode
je cur2
testb $0x30,mode
jne reboot
cur2: cmpb $0x01,e0
je cur
testb $0x02,leds
je cur
testb $0x03,mode
jne cur
xorl %ebx,%ebx
movb num_table(%eax),%al
jmp put_queue
1: ret
cur: movb cur_table(%eax),%al
cmpb $'9,%al
ja ok_cur
movb $'~,%ah
ok_cur: shll $16,%eax
movw $0x5b1b,%ax
xorl %ebx,%ebx
jmp put_queue
num_table:
.ascii "789 456 1230,"
cur_table:
.ascii "HA5 DGC YB623"
func:
pushl %eax
pushl %ecx
pushl %edx
call show_stat
popl %edx
popl %ecx
popl %eax
subb $0x3B,%al
jb end_func
cmpb $9,%al
jbe ok_func
subb $18,%al
cmpb $10,%al
jb end_func
cmpb $11,%al
ja end_func
ok_func:
cmpl $4,%ecx
jl end_func
movl func_table(,%eax,4),%eax
xorl %ebx,%ebx
jmp put_queue
end_func:
ret
func_table:
.long 0x415b5b1b,0x425b5b1b,0x435b5b1b,0x445b5b1b
.long 0x455b5b1b,0x465b5b1b,0x475b5b1b,0x485b5b1b
.long 0x495b5b1b,0x4a5b5b1b,0x4b5b5b1b,0x4c5b5b1b
# 294 "keyboard.S"
key_map:
.byte 0,27
.ascii "1234567890-="
.byte 127,9
.ascii "qwertyuiop[]"
.byte 13,0
.ascii "asdfghjkl;'"
.byte '`,0
.ascii "\\zxcvbnm,./"
.byte 0,'*,0,32 /* 36-39 */
.fill 16,1,0
.byte '-,0,0,0,'+
.byte 0,0,0,0,0,0,0
.byte '<
.fill 10,1,0
shift_map:
.byte 0,27
.ascii "!@#$%^&*()_+"
.byte 127,9
.ascii "QWERTYUIOP{}"
.byte 13,0
.ascii "ASDFGHJKL:\""
.byte '~,0
.ascii "|ZXCVBNM<>?"
.byte 0,'*,0,32 /* 36-39 */
.fill 16,1,0
.byte '-,0,0,0,'+
.byte 0,0,0,0,0,0,0
.byte '>
.fill 10,1,0
alt_map:
.byte 0,0
.ascii "\0@\0$\0\0{[]}\\\0"
.byte 0,0
.byte 0,0,0,0,0,0,0,0,0,0,0
.byte '~,13,0
.byte 0,0,0,0,0,0,0,0,0,0,0
.byte 0,0
.byte 0,0,0,0,0,0,0,0,0,0,0
.byte 0,0,0,0
.fill 16,1,0
.byte 0,0,0,0,0
.byte 0,0,0,0,0,0,0
.byte '|
.fill 10,1,0
# 449 "keyboard.S"
do_self:
lea alt_map,%ebx
testb $0x20,mode
jne 1f
lea shift_map,%ebx
testb $0x03,mode
jne 1f
lea key_map,%ebx
1: movb (%ebx,%eax),%al
orb %al,%al
je none
testb $0x4c,mode
je 2f
cmpb $'a,%al
jb 2f
cmpb $'},%al
ja 2f
subb $32,%al
2: testb $0x0c,mode
je 3f
cmpb $64,%al
jb 3f
cmpb $64+32,%al
jae 3f
subb $64,%al
3: testb $0x10,mode
je 4f
orb $0x80,%al
4: andl $0xff,%eax
xorl %ebx,%ebx
call put_queue
none: ret
minus: cmpb $1,e0
jne do_self
movl $'/,%eax
xorl %ebx,%ebx
jmp put_queue
key_table:
.long none,do_self,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,ctrl,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,do_self,lshift,do_self
.long do_self,do_self,do_self,do_self
.long do_self,do_self,do_self,do_self
.long do_self,minus,rshift,do_self
.long alt,do_self,caps,func
.long func,func,func,func
.long func,func,func,func
.long func,num,scroll,cursor
.long cursor,cursor,do_self,cursor
.long cursor,cursor,do_self,cursor
.long cursor,cursor,cursor,cursor
.long none,none,do_self,func
.long func,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,unctrl,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,unlshift,none
.long none,none,none,none
.long none,none,none,none
.long none,none,unrshift,none
.long unalt,none,uncaps,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
.long none,none,none,none
kb_wait:
pushl %eax
1: inb $0x64,%al
testb $0x02,%al
jne 1b
popl %eax
ret
reboot:
call kb_wait
movw $0x1234,0x472
movb $0xfc,%al
outb %al,$0x64
die: jmp die