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I_format.py
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I_format.py
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def binary12(num):
li = []
if num >= 0:
for i in range(0, 12):
li.insert(0, int(num % 2))
num = int(num / 2)
else:
num3 = 4096 + num
for i in range(0, 12):
li.insert(0, int(num3 % 2))
num3 = int(num3 / 2)
return li
def binary5(num):
li = []
for i in range(0, 5):
li.insert(0, int(num % 2))
num = int(num / 2)
return li
def addi(rd, rs1, imm):
s1 = binary5(rs1)
s2 = binary12(imm)
s3 = binary5(rd)
li = []
# insert funct3
li[0:11] = s2
li[12:16] = s1
li.append(0)
li.append(0)
li.append(0)
li[20:24] = s3
# insert opcode
li.append(0)
li.append(0)
li.append(1)
li.append(0)
li.append(0)
li.append(1)
li.append(1)
return li
def ori(rd, rs1, imm):
s1 = binary5(rs1)
s2 = binary12(imm)
s3 = binary5(rd)
li = []
# insert funct3
li[0:11] = s2
li[12:16] = s1
li.append(1)
li.append(1)
li.append(0)
li[20:24] = s3
# insert opcode
li.append(0)
li.append(0)
li.append(1)
li.append(0)
li.append(0)
li.append(1)
li.append(1)
return li
def andi(rd, rs1, imm):
s1 = binary5(rs1)
s2 = binary12(imm)
s3 = binary5(rd)
li = []
# insert funct3
li[0:11] = s2
li[12:16] = s1
li.append(1)
li.append(1)
li.append(1)
li[20:24] = s3
li.append(0)
li.append(0)
li.append(1)
li.append(0)
li.append(0)
li.append(1)
li.append(1)
# insert opcode
return li
def ld(rd, rs1, imm):
s1 = binary5(rs1)
s2 = binary12(imm)
s3 = binary5(rd)
li = []
# insert funct3
li[0:11] = s2
li[12:16] = s1
li.append(0)
li.append(1)
li.append(1)
li[20:24] = s3
# insert opcode
li.append(0)
li.append(0)
li.append(0)
li.append(0)
li.append(0)
li.append(1)
li.append(1)
return li
def lb(rd, rs1, imm):
s1 = binary5(rs1)
s2 = binary12(imm)
s3 = binary5(rd)
li = []
# insert funct3
li[0:11] = s2
li[12:16] = s1
li.append(0)
li.append(0)
li.append(0)
li[20:24] = s3
# insert opcode
li.append(0)
li.append(0)
li.append(0)
li.append(0)
li.append(0)
li.append(1)
li.append(1)
return li
def lh(rd, rs1, imm):
s1 = binary5(rs1)
s2 = binary12(imm)
s3 = binary5(rd)
li = []
# insert funct3
li[0:11] = s2
li[12:16] = s1
li.append(0)
li.append(0)
li.append(1)
li[20:24] = s3
# insert opcode
li.append(0)
li.append(0)
li.append(0)
li.append(0)
li.append(0)
li.append(1)
li.append(1)
return li
def lw(rd, rs1, imm):
s1 = binary5(rs1)
s2 = binary12(imm)
s3 = binary5(rd)
li = []
# insert funct3
li[0:11] = s2
li[12:16] = s1
li.append(0)
li.append(1)
li.append(0)
li[20:24] = s3
# insert opcode
li.append(0)
li.append(0)
li.append(0)
li.append(0)
li.append(0)
li.append(1)
li.append(1)
return li
def jalr(rd, rs1, imm):
s1 = binary5(rs1)
s2 = binary12(imm)
s3 = binary5(rd)
li = []
# insert funct3
li[0:11] = s2
li[12:16] = s1
li.append(0)
li.append(0)
li.append(0)
li[20:24] = s3
# insert opcode
li.append(1)
li.append(1)
li.append(0)
li.append(0)
li.append(1)
li.append(1)
li.append(1)
return li