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des.asm
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des.asm
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# In order to run the DES algorithm, just put the ascii code of the KEY and Message in the map_key and map_msg, respectively.
# by amin faiz khadem
#ASCII TABLE:=
# 48=0 49=1 50=2
# 51=3 52=4 53=5 54=6 55=7 56=8 57=9 58=: 59=; 60=<
# 61== 62=> 63=? 64=@ 65=A 66=B 67=C 68=D 69=E 70=F
# 71=G 72=H 73=I 74=J 75=K 76=L 77=M 78=N 79=O 80=P
# 81=Q 82=R 83=S 84=T 85=U 86=V 87=W 88=X 89=Y 90=Z
# 91=[ 92=\ 93=] 94=^ 95=_ 96=` 97=a 98=b 99=c 100=d
# 101=e 102=f 103=g 104=h 105=i 106=j 107=k 108=l 109=m 110=n
# 111=o 112=p 113=q 114=r 115=s 116=t 117=u 118=v 119=w 120=x
# 121=y 122=z
.data
###############################################################################
##ascii form####INPUT##########################################################
map_key: .byte 56,98,121,116,101,107,101,121 #enter ascii form of key input ex. "8bytekey" enter 56,98,121,116,101,107,101,121
map_msg: .byte 109,101,115,115,97,103,101,46 #enter ascii form of msg input ex. "message." enter 109,101,115,115,97,103,101,46
###############################################################################
map_pSUBKEY: .byte 14,17,11,24,1,5,3,28,15,6,21,10,23,19,12,4,26,8,16,7,27,20,13,2,41,52,31,37,47,55,30,40,51,45,33,48,44,49,39,56,34,53,46,42,50,36,29,32
map_pKEY: .byte 57,49,41,33,25,17,9,1,58,50,42,34,26,18,10,2,59,51,43,35,27,19,11,3,60,52,44,36,63,55,47,39,31,23,15,7,62,54,46,38,30,22,14,6,61,53,45,37,29,21,13,5,28,20,12,4
map_pIP: .byte 58,50,42,34,26,18,10,2,60,52,44,36,28,20,12,4,62,54,46,38,30,22,14,6,64,56,48,40,32,24,16,8,57,49,41,33,25,17,9,1,59,51,43,35,27,19,11,3,61,53,45,37,29,21,13,5,63,55,47,39,31,23,15,7
map_finalIP: .byte 40,8,48,16,56,24,64,32,39,7,47,15,55,23,63,31,38,6,46,14,54,22,62,30,37,5,45,13,53,21,61,29,36,4,44,12,52,20,60,28,35,3,43,11,51,19,59,27,34,2,42,10,50,18,58,26,33,1,41,9,49,17,57,25
map_funcE: .byte 32,1,2,3,4,5,4,5,6,7,8,9,8,9,10,11,12,13,12,13,14,15,16,17,16,17,18,19,20,21,20,21,22,23,24,25,24,25,26,27,28,29,28,29,30,31,32,1
map_lastP: .byte 16,7,20,21,29,12,28,17,1,15,23,26,5,18,31,10,2,8,24,14,32,27,3,9,19,13,30,6,22,11,4,25
map_S: .byte 14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7,0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8,4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0,15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13,15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10,3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5,0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15,13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9,10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8,13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1,13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7, 1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12,7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15,13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9,10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4,3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14,2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9,14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6,4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14,11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3,12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11,10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8, 9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6,4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13,4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1,13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6,1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2,6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12,13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7,1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2,7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8,2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11
.text
.align 2
.globl main
main:
#li $a1,945977716 #keyr
#li $a0,1701537145 #keyl
#li $a2,1634166062 #msgr
#li $a3, 1835365235 #msgl
li $t0,7
lb $a0,map_key($t0)
li $t0,6
lb $t0,map_key($t0)
sll $t0,$t0,8
add $a0,$a0,$t0
li $t0,5
lb $t0,map_key($t0)
sll $t0,$t0,16
add $a0,$a0,$t0
li $t0,4
lb $t0,map_key($t0)
sll $t0,$t0,24
add $a0,$a0,$t0
li $t0,3
lb $a1,map_key($t0)
li $t0,2
lb $t0,map_key($t0)
sll $t0,$t0,8
add $a1,$a1,$t0
li $t0,1
lb $t0,map_key($t0)
sll $t0,$t0,16
add $a1,$a1,$t0
li $t0,0
lb $t0,map_key($t0)
sll $t0,$t0,24
add $a1,$a1,$t0
#------
li $t0,7
lb $a2,map_msg($t0)
li $t0,6
lb $t0,map_msg($t0)
sll $t0,$t0,8
add $a2,$a2,$t0
li $t0,5
lb $t0,map_msg($t0)
sll $t0,$t0,16
add $a2,$a2,$t0
li $t0,4
lb $t0,map_msg($t0)
sll $t0,$t0,24
add $a2,$a2,$t0
li $t0,3
lb $a3,map_msg($t0)
li $t0,2
lb $t0,map_msg($t0)
sll $t0,$t0,8
add $a3,$a3,$t0
li $t0,1
lb $t0,map_msg($t0)
sll $t0,$t0,16
add $a3,$a3,$t0
li $t0,0
lb $t0,map_msg($t0)
sll $t0,$t0,24
add $a3,$a3,$t0
jal cipher1
j exit
#get Bit---------------------------------------------------
#$a1 #loc
#$a0 #i
#jal getbit
#int getB(int i ,int loc){
# i=i>>31-(loc-1);
# return i&1;
#}
getbit:
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
li $v1,0
addi $s7,$ra,0
addi $a1,$a1,-1
sub $a1,$zero,$a1
addi $a1,$a1,31
srl $a0,$a0,$a1
andi $a0,$a0,1
add $v1,$zero,$a0
addi $ra,$s7,0
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------
jr $ra
#OutPut:=v1
#----------------------------------------------------------
#set Bit---------------------------------------------------
#$a2 #loc
#$a1 #in
#$a0 #i
#jal setbit
#void setB(int &i , int in,int loc){
# int hl=0;
# hl=1<<31-(loc-1);
# if (in)
# i=i|hl;
# else
# i=i&~hl;
#}
setbit:
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
li $v1,0
addi $s7,$ra,0
addi $a2,$a2,-1
sub $a2,$zero,$a2
addi $a2,$a2,31
li $t0,1
sll $a2,$t0,$a2
bne $a1,$zero,setbit_or
j setbit_and
setbit_or:
or $v1,$a0,$a2
j setbit_ex
setbit_and:
nor $a2,$a2,0
and $v1,$a0,$a2
setbit_ex:
addi $ra,$s7,0
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------
jr $ra
#OutPut:=v1
#----------------------------------------------------------
#get Value-------------------------------------------------
#$a0 #e
#$a1 #b
#$a2 #in
#jal getV
#int getV(int in,int b,int e){
# int sum=0;
# int t=0;
# for (int i=e;i>=b;i--){
# sum+=getB(in,i)<<t;
# t+=1;
# }
# return sum;
#}
getV:
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
addi $s7,$ra,0
li $t3,0 #sum
li $t0,0 #t
add $t1,$a0,$zero #i
getV_check:
slt $t2,$t1,$a1
bne $t2,$zero,getV_exit
getV_loop:
#getB() ---------
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
addi $a1,$t1,0 #loc
addi $a0,$a2,0 #in
jal getbit
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------
#end getbit-------
sll $v1,$v1,$t0
add $t3,$t3,$v1
addi $t0,$t0,1
addi $t1,$t1,-1
j getV_check
getV_exit:
addi $ra,$s7,0
add $v1,$zero,$t3
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------
jr $ra
#OutPut:=v1
#----------------------------------------------------------
#shiftL----------------------------------------------------
#$s0 #rep
#$s1 #size
#$s2 #inp
#jal shiftL
#int shiftL(int inp,int size,int rep){
# for (int i=0;i<rep;i++){
# int bit=0;
# bit=getB(inp,1);
# bit=bit<<32-size;
# inp=inp<<1;
# inp=inp|bit;
# }
# return inp;
#}
shiftL:
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
addi $s7,$ra,0
li $t0,0 #i
shiftL_check:
slt $t2,$t0,$s0
beq $t2,$zero,shiftL_exit
shiftL_loop:
li $t2,0 #bit=0
li $t4,1
#getB() ---------
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
addi $a1,$t4,0 #loc
addi $a0,$s2,0 #in
jal getbit
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------
#end getbit-------
add $t2,$t2,$v1 #bit=getB(inp,1);
sub $t3,$zero,$s1 #-size;
addi $t3,$t3,32 #32-size;
sll $t2,$t2,$t3
sll $s2,$s2,$t4
or $s2,$s2,$t2
addi $t0,$t0,1 #i+=1
j shiftL_check
shiftL_exit:
add $v1,$zero,$s2
addi $ra,$s7,0
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------
jr $ra
#OutPut:=v1
#----------------------------------------------------------
#pKEY----------------------------------------------------
#$s0 #l
#$s1 #r
#jal pKEY
#void pKEY(int &l,int &r){
# int map[56]={57,49,41,33,25,17,9,1,58,50,42,34,26,18,10,2,59,51,43,35,27,19,11,3,60,52,44,36,63,55,47,39,31,23,15,7,62,54,46,38,30,22,14,6,61,53,45,37,29,21,13,5,28,20,12,4};
# int hl=l;
# int hr=r;
# for (int t=0;t<56;t++){
# if (map[t]>32){
# if (t>27){
# setB(hr,getB(r,map[t]-32),t-27);
# }
# else{
# setB(hl,getB(r,map[t]-32),t+1);
# }
# }
# else{
# if (t>27){
# setB(hr,getB(l,map[t]),t-27);
# }
# else{
# setB(hl,getB(l,map[t]),t+1);
# }
# }
#
# }
# r=hr;
# l=hl;
#
# r=r>>4;
# r=r<<4;
# l=l>>4;
# l=l<<4;
#}
pKEY:
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
addi $s7,$ra,0
add $t5,$s0,$zero #hl
add $t6,$s1,$zero #hr
li $t8,0 #t
li $t1,0 #map[t]
pKEY_check:
slt $t2,$t8,56
beq $t2,$zero,pKEY_exit
pKEY_loop:
lb $t1,map_pKEY($t8) #map[t]
li $t7,32
slt $t2,$t7,$t1
beq $t2,$zero,pKEY_get_l
pKEY_get_r:
addi $t3,$t1,-32
li $t7,27
slt $t2,$t7,$t8
beq $t2,$zero,pKEY_get_r_set_l
pKEY_get_r_set_r:
#getB() ---------
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
addi $a1,$t3,0 #loc
addi $a0,$s1,0 #in
jal getbit
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------
#end getbit-------
addi $t3,$t8,-27
#setB() ---------
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
addi $a2,$t3,0
addi $a1,$v1,0
addi $a0,$t6,0
jal setbit
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------
#end setbit-------
ori $t6,$v1,0
j pkey_ex
pKEY_get_r_set_l:
#getB() ---------
#-save--------------------
addi $sp,$sp,-88
sw $s0,84($sp)
sw $s1,80($sp)
sw $s2,76($sp)
sw $s3,72($sp)
sw $s4,68($sp)
sw $s5,64($sp)
sw $s6,60($sp)
sw $s7,56($sp)
sw $t0,52($sp)
sw $t1,48($sp)
sw $t2,44($sp)
sw $t3,40($sp)
sw $t4,36($sp)
sw $t5,32($sp)
sw $t6,28($sp)
sw $t7,24($sp)
sw $t8,20($sp)
sw $t9,16($sp)
sw $a0,12($sp)
sw $a1,8($sp)
sw $a2,4($sp)
sw $a3,0($sp)
#--------------------------
addi $a1,$t3,0 #loc
addi $a0,$s1,0 #in
jal getbit
#-load---------------------
lw $a3,0($sp)
lw $a2,4($sp)
lw $a1,8($sp)
lw $a0,12($sp)
lw $t9,16($sp)
lw $t8,20($sp)
lw $t7,24($sp)
lw $t6,28($sp)
lw $t5,32($sp)
lw $t4,36($sp)
lw $t3,40($sp)
lw $t2,44($sp)
lw $t1,48($sp)
lw $t0,52($sp)
lw $s7,56($sp)
lw $s6,60($sp)
lw $s5,64($sp)
lw $s4,68($sp)
lw $s3,72($sp)
lw $s2,76($sp)
lw $s1,80($sp)
lw $s0,84($sp)
addi $sp,$sp,88
#--------------------------