Macintosh-SW/PowerRomDasm
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Support int subregions.

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This commit is contained in:
Maxim Poliakovski 2021-10-21 21:35:18 +02:00
parent 023682783d
commit 1cd33a596c
1 changed files with 44 additions and 25 deletions
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69
PowerRomDasm.py
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@ -117,19 +117,6 @@ class M68KDasm:
print(instr['mnem'], '\t', end='')
print(','.join(instr['ops']))
def dasm_regions(self, start_addr, size, data, regions):
self.labels = {}
for reg in regions:
if reg[2] == 'align':
print(hex(start_addr + reg[0]).ljust(15), end='')
print('align\t' + str(reg[3]))
elif reg[2] == 'code':
reg_size = reg[1] - reg[0] + 1
self.dasm_region(start_addr + reg[0], reg_size,
data[reg[3]:reg[3]+reg_size])
else:
print("Unknown region type " + reg[2])
class ROMDisassembler:
def __init__(self, rom_data, rom_db):
@ -173,23 +160,56 @@ class ROMDisassembler:
else:
print("dc.l\t0x%X" % dest_offset)
def dasm_regions(self, start_addr, size, data, regions):
self.labels = {}
for reg in regions:
if reg[2] == 'align':
print(hex(start_addr + reg[0]).ljust(15), end='')
print('align\t' + str(reg[3]))
elif reg[2] == 'code':
reg_size = reg[1] - reg[0] + 1
self.m68k_dasm.dasm_region(start_addr + reg[0], reg_size,
data[reg[3]:reg[3]+reg_size])
elif reg[2] == 'int':
print("")
print((reg[1] + ':').ljust(15))
self.fmt_single_entry(reg[3], reg[4], reg[0])
else:
print("Unknown region type " + reg[2])
def parse_subregs(self, start, size, subregs):
#print("This entry has subregions", subregs)
regs = []
reg_start = start
for reg in subregs:
if reg['type'] != 'align':
if reg['type'] == 'align':
offset = reg['offset']
if offset < reg_start or offset >= (start + size):
print("Invalid subregion offset: 0x%X" % offset)
return regs
regs.append((reg_start, offset - 1, 'code', reg_start - start))
boundary = reg['boundary']
reg_end = align(offset, boundary)
regs.append((offset, reg_end - 1, 'align', boundary))
reg_start = reg_end
print("reg_start=%d" % reg_start)
elif reg['type'] == 'int':
offset = reg['offset']
if offset < reg_start or offset >= (start + size):
print("Invalid subregion offset: 0x%X" % offset)
return regs
regs.append((reg_start, offset - 1, 'code', reg_start - start))
reg_size = reg['size']
if 'label' in reg:
label = reg['label']
else:
label = 'l_{:x}'.format(self.start_addr + offset)
self.m68k_dasm.labels[self.start_addr + offset] = label
regs.append((offset, label, 'int', reg['format'], reg_size))
reg_start = offset + reg_size
else:
print("Unknown subregion type " + reg['type'])
return regs
offset = reg['offset']
if offset < reg_start or offset >= (start + size):
print("Invalid subregion offset: 0x%X" % offset)
return regs
regs.append((reg_start, offset - 1, 'code', reg_start - start))
boundary = reg['boundary']
reg_end = align(offset, boundary)
regs.append((offset, reg_end - 1, 'align', boundary))
reg_start = reg_end
if reg_start < (start + size):
regs.append((reg_start, (start + size) - 1, 'code', reg_start - start))
#print(regs)
@ -237,8 +257,7 @@ class ROMDisassembler:
regs = self.parse_subregs(offset, size, entry['subregs'])
else:
regs = [(offset, offset + size - 1, 'code', 0)]
self.m68k_dasm.dasm_regions(self.start_addr, size,
self.rom_data[offset:offset+size], regs)
self.dasm_regions(self.start_addr, size, self.rom_data[offset:offset+size], regs)
elif entry['arch'] == 'ppc':
print("PPC disassembler not implemented yet")
else: