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#!/usr/bin/python
USAGE = """
Usage:
%s mcs96ops.lst mcs96.inc
"""
import sys
def save_full_one(f, t, name, source):
print >>f, "void %s_device::%s_full()" % (t, name)
print >>f, "{"
for line in source:
print >>f, line
print >>f, "}"
print >>f
class Opcode:
def __init__(self, rng, name, amode, is_196, ea):
rng1 = rng.split("-")
self.rng_start = int(rng1[0], 16)
if len(rng1) == 2:
self.rng_end = int(rng1[1], 16)
else:
self.rng_end = self.rng_start
self.name = name
self.amode = amode
self.source = []
self.is_196 = is_196
if amode in ea:
for line in ea[amode].source:
self.source.append(line)
def add_source_line(self, line):
self.source.append(line)
class Special:
def __init__(self, name):
self.name = name
self.source = []
def add_source_line(self, line):
self.source.append(line)
class Macro:
def __init__(self, tokens):
self.name = tokens[1]
self.params = []
for i in range(2, len(tokens)):
self.params.append(tokens[i])
self.source = []
def add_source_line(self, line):
self.source.append(line)
def apply(self, target, tokens):
values = []
for i in range(1, len(tokens)):
values.append(tokens[i])
for i in range(0, len(self.source)):
line = self.source[i]
for j in range(0, len(self.params)):
line = line.replace(self.params[j], values[j])
target.add_source_line(line)
class OpcodeList:
def __init__(self, fname, is_196):
self.opcode_info = []
self.opcode_per_id = {}
self.ea = {}
self.macros = {}
try:
f = open(fname, "rU")
except Exception:
err = sys.exc_info()[1]
sys.stderr.write("Cannot read opcodes file %s [%s]\n" % (fname, err))
sys.exit(1)
inf = None
for line in f:
if line.startswith("#"):
continue
line = line.rstrip()
if not line:
continue
if line.startswith(" ") or line.startswith("\t"):
# append instruction to last opcode, maybe expand a macro
tokens = line.split()
if tokens[0] in self.macros:
self.macros[tokens[0]].apply(inf, tokens)
else:
inf.add_source_line(line)
else:
# New something
tokens = line.split()
# Addressing mode header
if tokens[0] == "eadr":
inf = Special(tokens[1])
self.ea[inf.name] = inf
elif tokens[0] == "fetch":
inf = Special(tokens[0])
self.fetch = inf
elif tokens[0] == "fetch_noirq":
inf = Special(tokens[0])
self.fetch_noirq = inf
elif tokens[0] == "macro":
inf = Macro(tokens)
self.macros[inf.name] = inf
else:
inf = Opcode(tokens[0], tokens[1], tokens[2], len(tokens) >= 4 and tokens[3] == "196", self.ea)
self.opcode_info.append(inf)
if is_196 or not inf.is_196:
for i in range(inf.rng_start, inf.rng_end+1):
self.opcode_per_id[i] = inf
def save_dasm(self, f, t):
print >>f, "const %s_device::disasm_entry %s_device::disasm_entries[0x100] = {" % (t, t)
for i in range(0, 0x100):
if i in self.opcode_per_id:
opc = self.opcode_per_id[i]
alt = "NULL"
if i + 0xfe00 in self.opcode_per_id:
alt = "\"" + self.opcode_per_id[i+0xfe00].name + "\""
if opc.name == "scall" or opc.name == "lcall":
flags = "DASMFLAG_STEP_OVER"
elif opc.name == "rts":
flags = "DASMFLAG_STEP_OUT"
else:
flags = "0"
print >>f, "\t{ \"%s\", %s, DASM_%s, %s }," % (opc.name, alt, opc.amode, flags)
else:
print >>f, "\t{ \"???\", NULL, DASM_none, 0 },"
print >>f, "};"
print >>f
def save_opcodes(self, f, t):
pf = ""
is_196 = False
if t == "i8xc196":
pf = "_196"
is_196 = True
for opc in self.opcode_info:
if opc.is_196 == is_196:
save_full_one(f, t, opc.name + "_" + opc.amode + pf, opc.source)
if not is_196:
save_full_one(f, t, "fetch", self.fetch.source)
save_full_one(f, t, "fetch_noirq", self.fetch_noirq.source)
def save_exec(self, f, t):
print >>f, "void %s_device::do_exec_full()" % t
print >>f, "{"
print >>f, "\tswitch(inst_state) {"
for i in range(0x000, 0x200):
opc = None
if i >= 0x100 and i-0x100+0xfe00 in self.opcode_per_id:
opc = self.opcode_per_id[i-0x100+0xfe00]
if opc is None and (i & 0xff) in self.opcode_per_id:
opc = self.opcode_per_id[i & 0xff]
if opc is not None:
nm = opc.name + "_" + opc.amode
if opc.is_196:
nm += "_196"
print >>f, "\tcase 0x%03x: %s_full(); break;" % (i, nm)
print >>f, "\tcase 0x200: fetch_full(); break;"
print >>f, "\tcase 0x201: fetch_noirq_full(); break;"
print >>f, "\t}"
print >>f, "}"
def main(argv):
if len(argv) != 4:
print USAGE % argv[0]
return 1
t = argv[1]
opcodes = OpcodeList(argv[2], t == "i8xc196")
try:
f = open(argv[3], "w")
except Exception:
err = sys.exc_info()[1]
sys.stderr.write("cannot write file %s [%s]\n" % (argv[3], err))
sys.exit(1)
if t != "mcs96":
opcodes.save_dasm(f, t)
if t != "i8x9x":
opcodes.save_opcodes(f, t)
if t != "mcs96":
opcodes.save_exec(f, t)
f.close()
# ======================================================================
if __name__ == "__main__":
sys.exit(main(sys.argv))
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