Created
January 26, 2022 13:04
-
-
Save WakkyFree/ec96668c186c5851a5726994ed05cff9 to your computer and use it in GitHub Desktop.
32bir assembler for the assembly language defined in https://www.coronasha.co.jp/np/isbn/9784339029062/
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# This is the assembler for the assembly language defined in https://www.coronasha.co.jp/np/isbn/9784339029062/ | |
import sys | |
def p_b(digits, num): | |
num_int = int(num) | |
if(num_int > 0): | |
print(format(num_int, 'b').zfill(digits), end = "", file=fw) | |
else: | |
print(format(num_int & 0xffff, 'b').zfill(digits), end = "", file=fw) | |
def p_r3(rd, rs, rt): | |
p_b(5, rs.replace('r', '')) | |
p_b(5, rt.replace('r', '')) | |
p_b(5, rd.replace('r', '')) | |
def p_r2i(rt, rs): | |
p_b(5, rs.replace('r', '')) | |
p_b(5, rt.replace('r', '')) | |
def p_r2b(rs, rt): | |
p_b(5, rs.replace('r', '')) | |
p_b(5, rt.replace('r', '')) | |
def base(addr): | |
return addr.replace('(','').replace(')','') | |
def dpl(addr): | |
return addr.replace('(','').replace(')','') | |
# check labels | |
f = open(sys.argv[1], 'r') | |
line_num = 0 | |
labels = [] | |
for line in f: | |
instruction = line.replace(',', '').replace('\t', '').replace('\s', '').replace(':', ' :').replace('\n', '').split() | |
if(instruction[1] == ':'): | |
labels.append([instruction[0], line_num]) # [label, line number] | |
line_num += 1 | |
f.close() | |
# translate into machine code | |
f = open(sys.argv[1], 'r') | |
fw = open('machine_code.txt', 'w') | |
line_num = 0 | |
field = [] | |
for line in f: | |
instruction = line.replace(',', '').replace('\t', '').replace('\s', '').replace(':', ' :').replace('\n', '').split() | |
while len(instruction) <= 6: | |
instruction.append([]) | |
if(instruction[1] == ':'): | |
op = instruction[2] | |
f2 = instruction[3] | |
f3 = instruction[4] | |
f4 = instruction[5] | |
f5 = instruction[6] | |
else: | |
op = instruction[0] | |
f2 = instruction[1] | |
f3 = instruction[2] | |
f4 = instruction[3] | |
f5 = instruction[4] | |
#print (line_num + 1, end = ':', file=fw) | |
if (op == 'add'): | |
p_b(6,0) | |
p_r3(f2, f3, f4) | |
p_b(11, 0) | |
elif (op == 'addi'): | |
p_b(6,1) | |
p_r2i(f2, f3) | |
p_b(16, f4) | |
elif (op == 'sub'): | |
p_b(6,0) | |
p_r3(f2, f3, f4) | |
p_b(11, 2) | |
elif (op == 'lui'): | |
p_b(6,3) | |
p_r2i(f2, 'r0') | |
p_b(16, f3) | |
elif (op == 'and'): | |
p_b(6,0) | |
p_r3(f2, f3, f4) | |
p_b(11, 8) | |
elif (op == 'andi'): | |
p_b(6,4) | |
p_r2i(f2, f3) | |
p_b(16, f4) | |
elif (op == 'or'): | |
p_b(6,0) | |
p_r3(f2, f3, f4) | |
p_b(11, 9) | |
elif (op == 'ori'): | |
p_b(6,5) | |
p_r2i(f2, f3) | |
p_b(16, f4) | |
elif (op == 'xor'): | |
p_b(6,0) | |
p_r3(f2, f3, f4) | |
p_b(11, 10) | |
elif (op == 'xori'): | |
p_b(6,6) | |
p_r2i(f2, f3) | |
p_b(16, f4) | |
elif (op == 'nor'): | |
p_b(6,0) | |
p_r3(f2, f3, f4) | |
p_b(11, 11) | |
elif (op == 'sll'): | |
p_b(6,0) | |
p_r3(f2, f3, 'r0') | |
p_b(5, f4) | |
p_b(6, 16) | |
elif (op == 'srl'): | |
p_b(6,0) | |
p_r3(f2, f3, 'r0') | |
p_b(5, f4) | |
p_b(6, 17) | |
elif (op == 'sra'): | |
p_b(6,0) | |
p_r3(f2, f3, 'r0') | |
p_b(5, f4) | |
p_b(6, 18) | |
elif (op == 'lw'): | |
p_b(6,16) | |
p_r2i(f2, base(f4)) | |
p_b(16, dpl(f3)) | |
elif (op == 'lh'): | |
p_b(6,18) | |
p_r2i(f2, base(f4)) | |
p_b(16, dpl(f3)) | |
elif (op == 'lb'): | |
p_b(6,20) | |
p_r2i(f2, base(f4)) | |
p_b(16, dpl(f3)) | |
elif (op == 'sw'): | |
p_b(6,24) | |
p_r2i(f2, base(f4)) | |
p_b(16, dpl(f3)) | |
elif (op == 'sh'): | |
p_b(6,26) | |
p_r2i(f2, base(f4)) | |
p_b(16, dpl(f3)) | |
elif (op == 'sb'): | |
p_b(6,28) | |
p_r2i(f2, base(f4)) | |
p_b(16, dpl(f3)) | |
elif (op == 'beq'): | |
p_b(6,32) | |
p_r2b(f2, f3) | |
for label in labels: | |
if f4 in label[0]: | |
p_b(16, label[1]-line_num-1) | |
break | |
elif (op == 'bne'): | |
p_b(6,33) | |
p_r2b(f2, f3) | |
for label in labels: | |
if f4 in label[0]: | |
p_b(16, label[1]-line_num-1) | |
break | |
elif (op == 'blt'): | |
p_b(6,34) | |
p_r2b(f2, f3) | |
for label in labels: | |
if f4 in label[0]: | |
p_b(16, label[1]-line_num-1) | |
break | |
elif (op == 'ble'): | |
p_b(6,35) | |
p_r2b(f2, f3) | |
for label in labels: | |
if f4 in label[0]: | |
p_b(16, label[1]-line_num-1) | |
break | |
elif (op == 'j'): | |
p_b(6,40) | |
for label in labels: | |
if f2 in label[0]: | |
p_b(26, label[1]) | |
break | |
elif (op == 'jal'): | |
p_b(6,41) | |
for label in labels: | |
if f2 in label[0]: | |
p_b(26, label[1]) | |
break | |
elif (op == 'jr'): | |
p_b(6,42) | |
p_r3('r0', f2, 'r0') | |
p_b(11, 0) | |
else: | |
print('ERROR:Illegal Instruction') | |
print('', file=fw) | |
line_num += 1 | |
f.close() | |
fw.close() | |
print('Translation is completed') |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment