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update gbz80disasm to account for conditional relative forward jumps

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hg-commit-id: 86a98b551bf2
This commit is contained in:
Bryan Bishop 2012-01-20 16:13:38 -06:00
parent 0bf1f601c4
commit a43794ce2e
1 changed files with 17 additions and 4 deletions
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21
extras/gbz80disasm.py
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@ -546,7 +546,7 @@ end_08_scripts_with = [
0xc9, #ret
###0xda, 0xe9, 0xd2, 0xc2, 0xca, 0xc3, 0x38, 0x30, 0x20, 0x28, 0x18, 0xd8, 0xd0, 0xc0, 0xc8, 0xc9
]
relative_jumps = [0x38, 0x30, 0x20, 0x28, 0x18, 0xc3]
relative_jumps = [0x38, 0x30, 0x20, 0x28, 0x18, 0xc3, 0xda]
relative_unconditional_jumps = [0xc3, 0x18]
#TODO: replace call and a pointer with call and a label
@ -746,7 +746,7 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000):
if current_byte == 0xc3:
if number == 0x3d97: used_3d97 = True
#if number == 0x24d7: #jp
if not has_outstanding_labels(byte_labels):
if not has_outstanding_labels(byte_labels) or all_outstanding_labels_are_reverse(byte_labels, offset):
keep_reading = False
is_data = False
break
@ -754,11 +754,17 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000):
is_data = True
#stop reading at a jump, relative jump or return
if current_byte in end_08_scripts_with or (current_byte == 0x18 and target_address < offset):
if not has_outstanding_labels(byte_labels) or (current_byte == 0x18 and target_address < offset):
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)
@ -792,6 +798,13 @@ def has_outstanding_labels(byte_labels):
if real_line["definition"] == False: return True
return False
def all_outstanding_labels_are_reverse(byte_labels, offset):
for label_id in byte_labels.keys():
line = byte_labels[label_id] # label_id is also the address
if line["definition"] == False:
if not label_id < offset: return False
return True
def text_asm_pretty_printer(label, address_of_08, include_08=True):
"""returns (output, end_address)"""
output = label + ": ; " + hex(address_of_08) + "\n"