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Merge pull request #153 from yenatch/gbz80disasm-data

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data detection in gbz80disasm
This commit is contained in:
Bryan Bishop 2013-06-25 20:32:52 -07:00
commit fbf561cfa5
1 changed files with 51 additions and 22 deletions
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73
extras/gbz80disasm.py
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@ -577,7 +577,7 @@ def find_label(local_address, bank_id=0):
if local_address < 0x8000:
for label_entry in all_labels:
if label_entry["address"] & 0x7fff == local_address:
if get_local_address(label_entry["address"]) == local_address:
if label_entry["bank"] == bank_id or label_entry["bank"] == 0:
return label_entry["label"]
if local_address in wram_labels.keys():
@ -589,7 +589,15 @@ def find_label(local_address, bank_id=0):
def asm_label(address):
# why using a random value when you can use the address?
return ".ASM_" + hex(address)[2:]
return '.asm_%x' % address
def data_label(address):
return '.data_%x' % address
def get_local_address(address):
bank = address / 0x4000
return (address & 0x3fff) + 0x4000 * bool(bank)
def get_global_address(address, bank):
return (address & 0x3fff) + 0x4000 * bank
def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_address=True, stop_at=[], debug = False):
#fs = current_address
@ -622,13 +630,14 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
end_address = original_offset + max_byte_count
byte_labels = {}
data_tables = {}
first_loop = True
output = ""
keep_reading = True
is_data = False
while offset <= end_address and keep_reading:
current_byte = rom[offset]
is_data = False
maybe_byte = current_byte
# stop at any address
@ -649,12 +658,12 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
byte_labels[offset]["name"] = line_label
byte_labels[offset]["usage"] = 0
byte_labels[offset]["definition"] = True
output += line_label.lower() + "\n" #" ; " + hex(offset) + "\n"
output += line_label + "\n" #" ; " + hex(offset) + "\n"
#find out if there's a two byte key like this
temp_maybe = maybe_byte
temp_maybe += ( rom[offset+1] << 8)
if temp_maybe in opt_table.keys() and rom[offset+1]!=0:
if not is_data and temp_maybe in opt_table.keys() and rom[offset+1]!=0:
opstr = opt_table[temp_maybe][0].lower()
if "x" in opstr:
@ -686,7 +695,7 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
current_byte_number += 2
offset += 2
elif maybe_byte in opt_table.keys():
elif not is_data and maybe_byte in opt_table.keys():
op_code = opt_table[maybe_byte]
op_code_type = op_code[1]
op_code_byte = maybe_byte
@ -723,7 +732,7 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
byte_labels[target_address]["usage"] = 1
byte_labels[target_address]["definition"] = False
insertion = line_label2.lower()
insertion = line_label2
if has_outstanding_labels(byte_labels) and all_outstanding_labels_are_reverse(byte_labels, offset):
include_comment = True
elif current_byte == 0x3e:
@ -772,6 +781,13 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
number = byte1
number += byte2 << 8
pointer = get_global_address(number, bank_id)
if pointer not in data_tables.keys():
data_tables[pointer] = {}
data_tables[pointer]['usage'] = 0
else:
data_tables[pointer]['usage'] += 1
insertion = "$%.4x" % (number)
result = find_label(insertion, bank_id)
if result != None:
@ -803,33 +819,46 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
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) or 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 $" + hex(rom[offset])[2:] #+ " ; " + hex(offset)
output += "\n"
offset += 1
current_byte_number += 1
if offset in byte_labels.keys():
is_data = False
keep_reading = True
#else the while loop would have spit out the opcode
#these two are done prior
#offset += 1
#current_byte_number += 1
if current_byte in relative_unconditional_jumps + end_08_scripts_with:
if not is_data and current_byte in relative_unconditional_jumps + end_08_scripts_with:
#stop reading at a jump, relative jump or return
if not has_outstanding_labels(byte_labels) or all_outstanding_labels_are_reverse(byte_labels, offset):
keep_reading = False
is_data = False #cleanup
break
elif offset not in byte_labels.keys() or offset in data_tables.keys():
is_data = True
keep_reading = True
else:
is_data = False
keep_reading = True
output += "\n"
elif is_data and offset not in byte_labels.keys():
is_data = True
keep_reading = True
else:
is_data = False
keep_reading = True
if offset in data_tables.keys():
output = output.replace('$%x' % (get_local_address(offset)), data_label(offset))
output += data_label(offset) + '\n'
is_data = True
keep_reading = True
first_loop = False
@ -838,7 +867,7 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
address = label_line
label_line = byte_labels[label_line]
if label_line["usage"] == 0:
output = output.replace((label_line["name"] + "\n").lower(), "")
output = output.replace((label_line["name"] + "\n"), "")
#tone down excessive spacing
output = output.replace("\n\n\n","\n\n")