mirror of
https://github.com/pret/pokemon-reverse-engineering-tools.git
synced 2026-08-28 21:24:09 -05:00
Merge pull request #69 from yenatch/master
Macro handling in read_bss_sections.
This commit is contained in:
Bryan Bishop
@@ -5,9 +5,12 @@ RGBDS BSS section and constant parsing.
|
||||
|
||||
import os
|
||||
|
||||
# TODO: parse these constants from constants.asm
|
||||
NUM_OBJECTS = 0x10
|
||||
OBJECT_LENGTH = 0x10
|
||||
|
||||
def separate_comment(line):
|
||||
if ';' in line:
|
||||
i = line.find(';')
|
||||
return line[:i], line[i:]
|
||||
return line, None
|
||||
|
||||
|
||||
def rgbasm_to_py(text):
|
||||
@@ -26,84 +29,149 @@ def make_wram_labels(wram_sections):
|
||||
def bracket_value(string, i=0):
|
||||
return string.split('[')[1 + i*2].split(']')[0]
|
||||
|
||||
def read_bss_sections(bss):
|
||||
sections = []
|
||||
section = {
|
||||
"labels": [],
|
||||
class BSSReader:
|
||||
"""Really?"""
|
||||
sections = []
|
||||
section = None
|
||||
address = None
|
||||
macros = {}
|
||||
constants = {
|
||||
# TODO: parse these constants from constants.asm
|
||||
'NUM_OBJECTS': 0x10,
|
||||
'OBJECT_LENGTH': 0x10,
|
||||
}
|
||||
address = None
|
||||
if type(bss) is not list: bss = bss.split('\n')
|
||||
for line in bss:
|
||||
line = line.lstrip()
|
||||
if 'SECTION' in line:
|
||||
if section: sections.append(section) # last section
|
||||
|
||||
comment_index = line.find(';')
|
||||
line, comment = line[:comment_index].lstrip(), line[comment_index:]
|
||||
section_types = {
|
||||
'VRAM': 0x8000,
|
||||
'SRAM': 0xa000,
|
||||
'WRAM0': 0xc000,
|
||||
'WRAMX': 0xd000,
|
||||
'HRAM': 0xff80,
|
||||
}
|
||||
|
||||
if 'SECTION' == line[:7]:
|
||||
if section: # previous
|
||||
sections += [section]
|
||||
def __init__(self, *args, **kwargs):
|
||||
self.__dict__.update(kwargs)
|
||||
|
||||
section_def = line.split(',')
|
||||
name = section_def[0].split('"')[1]
|
||||
type_ = section_def[1].strip()
|
||||
if len(section_def) > 2:
|
||||
bank = bracket_value(section_def[2])
|
||||
def read_bss_line(self, l):
|
||||
parts = l.strip().split(' ')
|
||||
token = parts[0].strip()
|
||||
params = ' '.join(parts[1:]).split(',')
|
||||
|
||||
if token in ['ds', 'db', 'dw']:
|
||||
if any(params):
|
||||
length = eval(rgbasm_to_py(params[0]), self.constants)
|
||||
else:
|
||||
bank = None
|
||||
|
||||
if '[' in type_:
|
||||
address = int(rgbasm_to_py(bracket_value(type_)), 16)
|
||||
else:
|
||||
types = {
|
||||
'VRAM': 0x8000,
|
||||
'SRAM': 0xa000,
|
||||
'WRAM0': 0xc000,
|
||||
'WRAMX': 0xd000,
|
||||
'HRAM': 0xff80,
|
||||
}
|
||||
if address == None or bank != section['bank'] or section['type'] != type_:
|
||||
if type_ in types.keys():
|
||||
address = types[type_]
|
||||
# else: keep going from this address
|
||||
|
||||
section = {
|
||||
'name': name,
|
||||
'type': type_,
|
||||
'bank': bank,
|
||||
'start': address,
|
||||
'labels': [],
|
||||
}
|
||||
|
||||
elif ':' in line:
|
||||
# rgbds allows labels without :, but prefer convention
|
||||
label = line[:line.find(':')]
|
||||
if ';' not in label:
|
||||
section['labels'] += [{
|
||||
'label': label,
|
||||
'address': address,
|
||||
'length': 0,
|
||||
}]
|
||||
|
||||
elif line[:3] == 'ds ':
|
||||
length = eval(rgbasm_to_py(line[3:]))
|
||||
address += length
|
||||
# adjacent labels use the same space
|
||||
for label in section['labels'][::-1]:
|
||||
length = {'ds': 1, 'db': 1, 'dw': 2}[token]
|
||||
self.address += length
|
||||
# assume adjacent labels to use the same space
|
||||
for label in self.section['labels'][::-1]:
|
||||
if label['length'] == 0:
|
||||
label['length'] = length
|
||||
else:
|
||||
break
|
||||
|
||||
elif 'EQU' in line:
|
||||
# some space is defined using constants
|
||||
name, value = line.split('EQU')
|
||||
name, value = name.strip(), value.strip().replace('$','0x').replace('%','0b')
|
||||
globals()[name] = eval(value)
|
||||
elif token in self.macros.keys():
|
||||
macro_text = '\n'.join(self.macros[token]) + '\n'
|
||||
for i, p in enumerate(params):
|
||||
macro_text = macro_text.replace('\\'+str(i+1),p)
|
||||
macro_text = macro_text.split('\n')
|
||||
macro_reader = BSSReader(
|
||||
sections = list(self.sections),
|
||||
section = dict(self.section),
|
||||
address = self.address,
|
||||
constants = self.constants,
|
||||
)
|
||||
macro_sections = macro_reader.read_bss_sections(macro_text)
|
||||
self.section = macro_sections[-1]
|
||||
self.address = self.section['labels'][-1]['address'] + self.section['labels'][-1]['length']
|
||||
|
||||
|
||||
def read_bss_sections(self, bss):
|
||||
|
||||
if self.section is None:
|
||||
self.section = {
|
||||
"labels": [],
|
||||
}
|
||||
|
||||
if type(bss) is str:
|
||||
bss = bss.split('\n')
|
||||
|
||||
macro = False
|
||||
macro_name = None
|
||||
for line in bss:
|
||||
line = line.lstrip()
|
||||
line, comment = separate_comment(line)
|
||||
line = line.strip()
|
||||
|
||||
if line[-4:].upper() == 'ENDM':
|
||||
macro = False
|
||||
macro_name = None
|
||||
|
||||
elif macro:
|
||||
self.macros[macro_name] += [line]
|
||||
|
||||
elif line[-5:].upper() == 'MACRO':
|
||||
macro_name = line.split(':')[0]
|
||||
macro = True
|
||||
self.macros[macro_name] = []
|
||||
|
||||
elif 'SECTION' == line[:7]:
|
||||
if self.section: # previous
|
||||
self.sections += [self.section]
|
||||
|
||||
section_def = line.split(',')
|
||||
name = section_def[0].split('"')[1]
|
||||
type_ = section_def[1].strip()
|
||||
if len(section_def) > 2:
|
||||
bank = bracket_value(section_def[2])
|
||||
else:
|
||||
bank = None
|
||||
|
||||
if '[' in type_:
|
||||
self.address = int(rgbasm_to_py(bracket_value(type_)), 16)
|
||||
else:
|
||||
if self.address == None or bank != self.section['bank'] or self.section['type'] != type_:
|
||||
self.address = self.section_types.get(type_, self.address)
|
||||
# else: keep going from this address
|
||||
|
||||
self.section = {
|
||||
'name': name,
|
||||
'type': type_,
|
||||
'bank': bank,
|
||||
'start': self.address,
|
||||
'labels': [],
|
||||
}
|
||||
|
||||
elif ':' in line:
|
||||
# rgbasm allows labels without :, but prefer convention
|
||||
label = line[:line.find(':')]
|
||||
if '\\' in label:
|
||||
raise Exception, line + ' ' + label
|
||||
if ';' not in label:
|
||||
section_label = {
|
||||
'label': label,
|
||||
'address': self.address,
|
||||
'length': 0,
|
||||
}
|
||||
self.section['labels'] += [section_label]
|
||||
self.read_bss_line(line.split(':')[-1])
|
||||
|
||||
elif 'EQU' in line.split():
|
||||
# some space is defined using constants
|
||||
name, value = line.split('EQU')
|
||||
name, value = name.strip(), value.strip().replace('$','0x').replace('%','0b')
|
||||
self.constants[name] = eval(value, self.constants)
|
||||
|
||||
elif line:
|
||||
self.read_bss_line(line)
|
||||
|
||||
self.sections += [self.section]
|
||||
return self.sections
|
||||
|
||||
def read_bss_sections(bss):
|
||||
reader = BSSReader()
|
||||
return reader.read_bss_sections(bss)
|
||||
|
||||
sections.append(section)
|
||||
return sections
|
||||
|
||||
def constants_to_dict(constants):
|
||||
return dict((eval(rgbasm_to_py(constant[constant.find('EQU')+3:constant.find(';')])), constant[:constant.find('EQU')].strip()) for constant in constants)
|
||||
|
||||
Reference in New Issue
Block a user