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update gbz80disasm for handling known fall-throughs 

When disassembling a group of functions, sometimes there are other
functions known in advance. By passing in a list called stop_at to
gbz80disasm, it is possible to prevent disassembled asm from running on
for longer than necessary.
This commit is contained in:
Bryan Bishop 2013-02-27 21:41:03 -06:00
parent 0e2ab04353
commit 01e10a11b2
1 changed files with 13 additions and 1 deletions
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14
extras/gbz80disasm.py
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@ -592,7 +592,7 @@ def asm_label(address):
# why using a random value when you can use the address? # why using a random value when you can use the address?
return ".ASM_" + hex(address)[2:] return ".ASM_" + hex(address)[2:]
def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_address=True, debug = False): def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_address=True, stop_at=[], debug = False):
#fs = current_address #fs = current_address
#b = bank_byte #b = bank_byte
#in = input_data -- rom #in = input_data -- rom
@ -601,6 +601,10 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
#ad = end_address #ad = end_address
#a, oa = current_byte_number #a, oa = current_byte_number
# stop_at can be used to supply a list of addresses to not disassemble
# over. This is useful if you know in advance that there are a lot of
# fall-throughs.
load_labels() load_labels()
load_rom() load_rom()
@ -622,6 +626,7 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
byte_labels = {} byte_labels = {}
first_loop = True
output = "" output = ""
keep_reading = True keep_reading = True
while offset <= end_address and keep_reading: while offset <= end_address and keep_reading:
@ -629,6 +634,11 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
is_data = False is_data = False
maybe_byte = current_byte maybe_byte = current_byte
# stop at any address
if not first_loop and offset in stop_at:
keep_reading = False
break
#first check if this byte already has a label #first check if this byte already has a label
#if it does, use the label #if it does, use the label
#if not, generate a new label #if not, generate a new label
@ -816,6 +826,8 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000, include_last_add
#offset += 1 #offset += 1
#current_byte_number += 1 #current_byte_number += 1
first_loop = False
#clean up unused labels #clean up unused labels
for label_line in byte_labels.keys(): for label_line in byte_labels.keys():
address = label_line address = label_line