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update gbz80disasm based on sawakita's changes

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Changes include:

* .ASM_ labels now include their offset in the label

* byte_labels keeps better track of when a label is defined versus used

* reverse relative jumps now work

* reverse unconditional relative jumps can end a script

hg-commit-id: 8afc93fce17a
This commit is contained in:
Bryan Bishop 2012-01-12 12:35:03 -06:00
parent 41085fdac1
commit 7e35470fb1
2 changed files with 16 additions and 8 deletions
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23
extras/gbz80disasm.py
View file

@ -4,6 +4,7 @@
import extract_maps
from copy import copy, deepcopy
from pretty_map_headers import random_hash, map_name_cleaner
from ctypes import c_int8
import sys
spacing = " "
@ -545,7 +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]
relative_jumps = [0x38, 0x30, 0x20, 0x28, 0x18, 0xc3]
relative_unconditional_jumps = [0xc3, 0x18]
#TODO: replace call and a pointer with call and a label
@ -567,6 +568,10 @@ asm_commands = {
def random_asm_label():
return ".ASM_" + random_hash()
def asm_label(address):
# why using a random value when you can use the eff. address?
return ".ASM_" + hex(address)[2:]
def output_bank_opcodes(original_offset, max_byte_count=0x4000):
#fs = current_address
#b = bank_byte
@ -599,11 +604,12 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000):
line_label = byte_labels[offset]["name"]
byte_labels[offset]["usage"] += 1
else:
line_label = random_asm_label()
line_label = asm_label(offset)
byte_labels[offset] = {}
byte_labels[offset]["name"] = line_label
byte_labels[offset]["usage"] = 0
output += line_label.lower() + " ; " + hex(offset) + "\n"
byte_labels[offset]["definition"] = True
output += line_label.lower() + "\n" #" ; " + hex(offset) + "\n"
#find out if there's a two byte key like this
temp_maybe = maybe_byte
@ -666,15 +672,16 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000):
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 + ord(rom[offset + 1])
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 = random_asm_label()
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
@ -731,7 +738,7 @@ 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:
if current_byte in end_08_scripts_with or (current_byte == 0x18 and target_address < offset):
if not has_outstanding_labels(byte_labels):
keep_reading = False
is_data = False #cleanup
@ -753,7 +760,7 @@ def output_bank_opcodes(original_offset, max_byte_count=0x4000):
address = label_line
label_line = byte_labels[label_line]
if label_line["usage"] == 0:
output = output.replace((label_line["name"] + " ; " + hex(address) + "\n").lower(), "")
output = output.replace((label_line["name"] + "\n").lower(), "")
#add the offset of the final location
output += "; " + hex(offset)
@ -766,7 +773,7 @@ def has_outstanding_labels(byte_labels):
"""
for label_line in byte_labels.keys():
real_line = byte_labels[label_line]
if real_line["usage"] == 1: return True
if real_line["definition"] == False: return True
return False
def text_asm_pretty_printer(label, address_of_08, include_08=True):

1
pokered.asm
View file

@ -5796,6 +5796,7 @@ PalletTownScript:
ld hl,PalletTownScriptPointers
ld a,[$D5F1]
jp $3D97
; 0x18e73
PalletTownScriptPointers:
dw PalletTownScript1,PalletTownScript2,PalletTownScript3,PalletTownScript4,PalletTownScript5,PalletTownScript6,PalletTownScript7