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more awful code for the new disassembler

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Bryan Bishop 2012-06-07 01:24:38 -05:00
parent 7dd0c86a6b
commit 4ccfe27e4a
1 changed files with 187 additions and 2 deletions
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189
extras/romstr.py
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@ -169,8 +169,193 @@ class Asm:
maybe_byte = current_byte maybe_byte = current_byte
# stuff... # check if this byte has a label prior to it
raise NotImplementedError, "o_______o" # and if not, generate a new label
# This new label might not be used, so it will be
# removed if the total usage is zero.
if offset in byte_labels.keys():
line_label = byte_labels[offset]["name"]
byte_labels[offset]["usage"] += 1
else:
line_label = asm_label(offset)
byte_labels[offset] = {}
byte_labels[offset]["name"] = line_label
byte_labels[offset]["usage"] = 0
byte_labels[offset]["definition"] = True
output += .. add label here (well, not really)
#find out if there's a two byte key like this
temp_maybe = maybe_byte
temp_maybe += ( ord(rom[offset+1]) << 8)
if temp_maybe in opt_table.keys() and ord(rom[offset+1])!=0:
opstr = opt_table[temp_maybe][0].lower()
if "x" in opstr:
for x in range(0, opstr.count("x")):
insertion = ord(rom[offset + 1])
insertion = "$" + hex(insertion)[2:]
opstr = opstr[:opstr.find("x")].lower() + insertion + opstr[opstr.find("x")+1:].lower()
current_byte += 1
offset += 1
if "?" in opstr:
for y in range(0, opstr.count("?")):
byte1 = ord(rom[offset + 1])
byte2 = ord(rom[offset + 2])
number = byte1
number += byte2 << 8;
insertion = "$%.4x" % (number)
opstr = opstr[:opstr.find("?")].lower() + insertion + opstr[opstr.find("?")+1:].lower()
current_byte_number += 2
offset += 2
output += spacing + opstr #+ " ; " + hex(offset)
output += "\n"
current_byte_number += 2
offset += 2
elif maybe_byte in opt_table.keys():
op_code = opt_table[maybe_byte]
op_code_type = op_code[1]
op_code_byte = maybe_byte
#type = -1 when it's the E op
#if op_code_type != -1:
if op_code_type == 0 and ord(rom[offset]) == op_code_byte:
op_str = op_code[0].lower()
output += spacing + op_code[0].lower() #+ " ; " + hex(offset)
output += "\n"
offset += 1
current_byte_number += 1
elif op_code_type == 1 and ord(rom[offset]) == op_code_byte:
oplen = len(op_code[0])
opstr = copy(op_code[0])
xes = op_code[0].count("x")
include_comment = False
for x in range(0, xes):
insertion = ord(rom[offset + 1])
insertion = "$" + hex(insertion)[2:]
if current_byte == 0x18 or current_byte==0x20 or current_byte in relative_jumps: #jr or jr nz
#generate a label for the byte we're jumping to
target_address = offset + 2 + c_int8(ord(rom[offset + 1])).value
if target_address in byte_labels.keys():
byte_labels[target_address]["usage"] = 1 + byte_labels[target_address]["usage"]
line_label2 = byte_labels[target_address]["name"]
else:
line_label2 = asm_label(target_address)
byte_labels[target_address] = {}
byte_labels[target_address]["name"] = line_label2
byte_labels[target_address]["usage"] = 1
byte_labels[target_address]["definition"] = False
insertion = line_label2.lower()
include_comment = True
elif current_byte == 0x3e:
last_a_address = ord(rom[offset + 1])
opstr = opstr[:opstr.find("x")].lower() + insertion + opstr[opstr.find("x")+1:].lower()
output += spacing + opstr
if include_comment:
output += " ; " + hex(offset)
if current_byte in relative_jumps:
output += " $" + hex(ord(rom[offset + 1]))[2:]
output += "\n"
current_byte_number += 1
offset += 1
insertion = ""
current_byte_number += 1
offset += 1
include_comment = False
elif op_code_type == 2 and ord(rom[offset]) == op_code_byte:
oplen = len(op_code[0])
opstr = copy(op_code[0])
qes = op_code[0].count("?")
for x in range(0, qes):
byte1 = ord(rom[offset + 1])
byte2 = ord(rom[offset + 2])
number = byte1
number += byte2 << 8;
insertion = "$%.4x" % (number)
if maybe_byte in call_commands or current_byte in relative_unconditional_jumps or current_byte in relative_jumps:
result = find_label(insertion, bank_id)
if result != None:
insertion = result
opstr = opstr[:opstr.find("?")].lower() + insertion + opstr[opstr.find("?")+1:].lower()
output += spacing + opstr #+ " ; " + hex(offset)
output += "\n"
current_byte_number += 2
offset += 2
current_byte_number += 1
offset += 1
if current_byte == 0x21:
last_hl_address = byte1 + (byte2 << 8)
if current_byte == 0xcd:
if number == 0x3d97: used_3d97 = True
#duck out if this is jp $24d7
if current_byte == 0xc3 or current_byte in relative_unconditional_jumps:
if current_byte == 0xc3:
if number == 0x3d97: used_3d97 = True
#if number == 0x24d7: #jp
if not has_outstanding_labels(byte_labels) or all_outstanding_labels_are_reverse(byte_labels, offset):
keep_reading = False
is_data = False
break
else:
is_data = True
#stop reading at a jump, relative jump or return
if current_byte in end_08_scripts_with:
if not has_outstanding_labels(byte_labels) and all_outstanding_labels_are_reverse(byte_labels, offset):
keep_reading = False
is_data = False #cleanup
break
else:
is_data = False
keep_reading = True
else:
is_data = False
keep_reading = True
else:
#if is_data and keep_reading:
output += spacing + "db $" + hex(ord(rom[offset]))[2:] #+ " ; " + hex(offset)
output += "\n"
offset += 1
current_byte_number += 1
#else the while loop would have spit out the opcode
#these two are done prior
#offset += 1
#current_byte_number += 1
#clean up unused labels
for label_line in byte_labels.keys():
address = label_line
label_line = byte_labels[label_line]
if label_line["usage"] == 0:
output = output.replace((label_line["name"] + "\n").lower(), "")
#add the offset of the final location
output += "; " + hex(offset)
return (output, offset, last_hl_address, last_a_address, used_3d97)
def __str__(self): def __str__(self):
""" ASM pretty printer. """ ASM pretty printer.