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RomWack.py
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RomWack.py
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#import sys
from AmigaDebugger import AmigaDebugger
import re
import time
import struct
class RomWack(AmigaDebugger):
def __init__(self, **kwargs):
super().__init__()
if not "serial" in kwargs:
raise ValueError()
self.serial = kwargs["serial"]
if "Debug" in kwargs:
self.debug = kwargs["Debug"]
else:
self.debug = False
if "syncabort" in kwargs: #Meant to be a threading.Event
self.syncabort = kwargs["syncabort"]
else:
self.syncabort = False
self.debugger = "RomWack"
self.regsre1 = re.compile(r'PC: ([0-9A-F]{6,8}) +SR: ([0-9A-F]{4}) +USP: ([0-9A-F]{6,8}) +SSP: ([0-9A-F]{6,8}) +(XCPT|TRAP)+: ([0-9A-F]{4}) +TASK: ([0-9A-F]{6,8})')
self.regsre2 = re.compile(r'DR:+((?: [0-9A-F]{8}){8})')
self.regsre3 = re.compile(r'AR:+((?: [0-9A-F]{8}){7})')
self.readmem = self._readmem
self.writemem = self._writemem
self.serper = 372 #romwack rawioinit() puts 372 in SERPER
self.baudrate = 9600
self.serial.baudrate = self.baudrate
self.sync()
self.execdebug = self.peek32(0x4) - 114
return
def sync(self):
while self.serial.in_waiting:
self.serial.read(1)
while True:
if self.serial.in_waiting:
if self.serial.read(1) == b'_':
break
else:
continue
time.sleep(0.01)
self.serial.write(b'_')
self.serial.flush()
if self.syncabort:
if self.syncabort.is_set():
exit(1)
while self.serial.in_waiting:
self.serial.read(1)
self.serial.write(b'\r')
self.serial.flush()
while self.serial.read(1) != b'\n':
pass
while self.serial.read(1) != b'\n':
pass
return
def getmachinestate(self):
machinestate = {}
self.serial.write(b'regs\r')
self.serial.readline()
regs = self.serial.readline().decode()
(machinestate["pc"], machinestate["sr"], machinestate["usp"], machinestate["ssp"], machinestate["xcpt"], machinestate["task"]) = [int(x, 16) for x in self.regsre1.match(regs).group(1, 2, 3, 4, 6, 7)]
regs = self.serial.readline().decode()
machinestate["d"] = [int(x, 16) for x in self.regsre2.match(regs).group(1).split(' ')[1:]]
regs = self.serial.readline().decode()
machinestate["a"] = [int(x, 16) for x in self.regsre3.match(regs).group(1).split(' ')[1:]]
regs = self.serial.readline().decode()
return machinestate
def peek16(self, addr):
self.serial.write(b':2\r')
self.serial.readline()
self.serial.readline()
self.serial.write(f'{hex(addr)[2:]}\r'.encode("ascii"))
self.serial.readline()
value = int(self.serial.readline().split(b' ')[1], 16)
return value
def poke16(self, addr, value):
self.serial.write(b':0\r')
self.serial.readline()
self.serial.write(f'{hex(addr)[2:]}\r'.encode("ascii"))
self.serial.readline()
self.serial.write(b'=')
self.serial.flush()
while self.serial.read(1) != b'=':
pass
self.serial.write(f'{value:0>4x}\r'.encode("ascii"))
self.serial.readline()
return
def peek32(self, addr):
self.serial.write(b':4\r')
self.serial.readline()
self.serial.readline()
self.serial.write(f'{hex(addr)[2:]}\r'.encode("ascii"))
self.serial.readline()
value = int(b"".join(self.serial.readline().split(b' ')[1:3]), 16)
return value
def poke32(self, addr, value):
self.serial.write(b':0\r')
self.serial.readline()
self.serial.write(f'{hex(addr)[2:]}\r'.encode("ascii"))
self.serial.readline()
self.serial.write(b'alter\r')
while (ch := self.serial.read(1)) != b'=':
pass
word = value >> 16
self.serial.write(f'{word:0>4x}\r'.encode("ascii"))
while self.serial.read(1) != b'=':
pass
word = value & 0xFFFF
self.serial.write(f'{word:0>4x}\r'.encode("ascii"))
while self.serial.read(1) != b'=':
pass
self.serial.write(b'\r')
self.serial.readline()
return
def peek8(self, addr):
if addr & 1:
value = self.peek16(addr & 0xFFFFFFFE) & 0xFF
else:
value = self.peek16(addr) >> 8
return value
def poke8(self, addr, value):
self.serial.write(b':4\r')
self.serial.readline()
self.serial.readline()
if addr & 1:
self.serial.write(f'{hex(addr&0xFFFFFFFE)[2:]}\r'.encode("ascii"))
self.serial.readline()
else:
self.serial.write(f'{hex(addr)[2:]}\r'.encode("ascii"))
self.serial.readline()
old = self.serial.readline().split(b' ')[1]
if addr & 1:
new = old[:2] + "{0:0>2x}".format(value).encode("ascii")
else:
new = "{0:0>2x}".format(value).encode("ascii") + old[2:]
self.serial.write(b'=')
self.serial.flush()
while self.serial.read(1) != b'=':
pass
self.serial.write(new + b'\r')
self.serial.readline()
self.serial.readline()
return
def _readmem(self, addr, size):
words = 0
start = addr & ~1
end = addr + size
end += end & 1
totalwords = (end - start) // 2
if addr & 1 and not size & 1:
workaround = 1
else:
workaround = 0
self.serial.write(b':0\r')
self.serial.readline()
self.serial.write(f'{hex(addr)[2:]}\r'.encode("ascii"))
self.serial.readline()
buf = b''
self.serial.write(f':{hex(size+workaround)[2:]}\r'.encode("ascii"))
self.serial.readline()
for i in range(0, totalwords // 8):
words = self.serial.readline().split(b' ')[1:]
for j in range(0, 8):
value = int(words[j], 16)
buf += struct.pack(">H", value)
remainingwords = totalwords % 8
if remainingwords:
words = self.serial.readline().split(b' ')[1:]
for j in range(0, remainingwords):
value = int(words[j], 16)
buf += struct.pack(">H", value)
self.serial.write(b':0\r')
self.serial.readline()
if start != addr:
buf = buf[1:]
if len(buf) == (size + 1):
buf = buf[:-1]
return buf
def _writemem(self, addr, buf):
size = len(buf)
endaddr = addr + size
if self.debug:
print(f"romwack writemem {addr} {size}")
if(addr & 1):
self.poke8(addr, buf[0])
buf = buf[1:]
addr += 1
self.serial.write(b':0\r')
self.serial.readline()
self.serial.write(f'{hex(addr)[2:]}\r'.encode("ascii"))
self.serial.readline()
self.serial.write(b'alter\r')
self.serial.readline()
for word in [buf[i:i + 2] for i in range(0, len(buf) - 1, 2)]:
word = struct.unpack(">H", word)[0]
while self.serial.read(1) != b'=':
pass
self.serial.write(f'{word:0>4x}\r'.encode("ascii"))
addr += 2
self.serial.readline()
while self.serial.read(1) != b'=':
pass
self.serial.write(b'\r')
self.serial.readline()
if addr != endaddr:
if self.debug:
print(f'romwack writemem even end poke8: {hex(addr)} {hex(endaddr)} {hex(buf[-1])}')
self.poke8(addr, buf[-1])
return
def getreg(self, reg):
if reg.lower() == "a7" or reg.lower() == "sp":
reg = "u"
self.serial.write(f'!{reg}'.encode("ascii"))
self.serial.flush()
buf = b""
while (c := self.serial.read(1)) != b'=':
buf += c
self.serial.write(b'\r')
self.serial.readline()
value = int(buf.split(b' ')[1].decode("ascii"), 16)
return value
def setreg(self, reg, value):
if reg.lower() == "a7" or reg.lower() == "sp":
reg = "u"
self.serial.write(f'!{reg}'.encode("ascii"))
self.serial.flush()
while self.serial.read(1) != b'=':
pass
self.serial.write(f'{value:0>8x}\r'.encode("ascii"))
self.serial.readline()
return
def go(self, addr):
while self.serial.in_waiting:
print(self.serial.read(1), end='')
self.serial.write(b':0\r')
self.serial.readline()
self.serial.write(f'{hex(addr)[2:]}\r'.encode("ascii"))
self.serial.readline()
self.serial.write(b'go\r')
while self.serial.read(1) != b'o':
pass
return
def __call(self, addr):
if self.debug:
print(f"RomWack calling {hex(addr)}.")
sp = self.getreg("sp") - 4
self.setreg("sp", sp)
self.poke32(sp, self.execdebug)
self.go(addr)
return
def call(self, addr):
self.__call(addr)
return
def calltime(self, addr):
self.__call(addr)
start = time.monotonic()
print(f'Call start: {start}s')
while not self.serial.in_waiting:
pass
end = time.monotonic()
print(f'Call end: {end}s\ndiff {end-start}s')
return
def resume(self):
self.serial.write(b'resume\r')
self.serial.read(6)
return
def reboot(self):
self.serial.write(b'ig\r')
self.serial.read(2)
return