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#!/usr/bin/python
# license:BSD-3-Clause
# copyright-holders:Olivier Galibert
from __future__ import print_function
import io
import re
import sys
DASM_ARGS = {
"c": ("%s", "get_memadr(opcode, 'c')"),
"d": ("%s", "get_memadr(opcode, 'd')"),
"i": ("%02x", "opcode & 0xff"),
}
TYPES = {
"": None,
"d": None,
"b": " cs->branch = BR_UB;",
"cb": " cs->branch = BR_CB;",
"i": " cs->branch = BR_IDLE;",
"f": None,
}
def expand_d(v):
index = ["(i->param + ", "(id + "][v["dmode"]]
mask = ["ba0) & 0xff] << 8)", "ba1) & 0x1f] << 8)"][v["dbp"]]
return "(dmem%d[" % v["dbp"] + index + mask
def expand_d24(v):
index = ["(i->param + ", "(id + "][v["dmode"]]
mask = ["ba0) & 0xff]", "ba1) & 0x1f]"][v["dbp"]]
return "dmem%d[" % v["dbp"] + index + mask
EXPAND_ML = ["macc", "(macc << 2)", "(macc << 4)", "(macc >> 16)" ]
def expand_mv(v):
c = ["", "s"][v["movm"]]
return "check_macc_overflow_%d%s()" % (v["sfmo"], c)
EXPAND_C = ["get_cmem(i->param)", "get_cmem(ca)"]
EXPAND_WC = ["cmem[i->param] =", "cmem[ca] ="]
ROUNDING = [ 0, 1 << (48-32-1), 1 << (48-24-1), 1 << (48-30-1),
1 << (48-16-1)]
A = (1 << 64) - 1
RMASK= [A,
A - (1 << (48-32)) + 1,
A - (1 << (48-24)) + 1,
A - (1 << (48-30)) + 1,
A - (1 << (48-16)) + 1,
]
def expand_mo(v):
c = ["", "s"][v["movm"]]
return "macc_to_output_%d%s(0x%016xULL, 0x%016xULL)" % (
v["sfmo"], c, ROUNDING[v["rnd"]], RMASK[v["rnd"]])
def expand_wd1(v):
index = ["(i->param + ", "(id + "][v["dmode"]]
mask = ["ba0) & 0xff] =", "ba1) & 0x1f] ="][v["dbp"]]
return "dmem%d[" % v["dbp"] + index + mask
WA2 = (
" if(r < -2147483648 || r > 2147483647) {\n"
" st1 |= ST1_AOV;\n"
" if(st1 & ST1_AOVM) r = std::max(int64_t(-2147483648), std::min(int64_t(2147483647), r));\n"
" }"
" aacc = r;")
PDESC_EXPAND = {
"a": lambda v: ["aacc", "(aacc << 7)"][v["sfao"]],
"c": lambda v: EXPAND_C[v["cmode"]],
"d": expand_d,
"d24": expand_d24,
"i": lambda v: "i->param",
"ml": lambda v: EXPAND_ML[v["sfma"]],
"mo": expand_mo,
"mv": expand_mv,
"wa1": lambda v: "r =",
"wa2": lambda v: WA2,
"wc1": lambda v: EXPAND_WC[v["cmode"]],
"wd1": expand_wd1,
"b1": lambda v: "pc = ",
"b2": lambda v: " sti |= S_BRANCH;",
"sfai1": lambda v: ["", "((int32_t)("][v["sfai"]],
"sfai2": lambda v: ["", ")) >> 1"][v["sfai"]],
}
PDESC = {
"a": (0, ["sfao"]),
"c": (0, ["cmode"]),
"d": (0, ["dmode", "dbp"]),
"d24": (0, ["dmode", "dbp"]),
"i": (0, []),
"ml": (0, ["sfma"]),
"mo": (0, ["sfmo", "rnd", "movm"]),
"mv": (0, ["sfmo", "movm"]),
"wa": (1, []),
"wc": (1, ["cmode"]),
"wd": (1, ["dmode", "dbp"]),
"b": (1, []),
"sfai": (2, ["sfai"]),
}
VARIANTS = {
"cmode": (2, "xmode(opcode, 'c', cs)" ),
"dmode": (2, "xmode(opcode, 'd', cs)" ),
"sfai": (2, "sfai(st1)"),
"dbp": (2, "dbp(st1)"),
"sfao": (2, "sfao(st1)"),
"sfmo": (4, "sfmo(st1)"),
"rnd": (5, "rnd(st1)"),
"movm": (2, "movm(st1)"),
"sfma": (4, "sfma(st1)"),
# dummy
"post": (1, None),
}
VARIANT_CANONICAL_ORDER = [
"cmode",
"dmode",
"sfai",
"dbp",
"sfao",
"sfmo",
"rnd",
"movm",
"sfma",
]
def EmitWithPrefix(f, out, prefix):
for o in out:
print(prefix + o, file=f)
class Instruction:
def __init__(self, line):
token = line.split()
if len(token) == 5:
token.append("")
assert len(token) == 6
self._name = token[0]
self._cat = token[1]
self._id = int(token[2], 16)
self._cyc = int(token[3])
self._rep = token[4]
self._type = token[5]
self._flags = set()
if self._cat == "2b":
self._flags.add("post")
self._dasm = None
self._run = []
self._variants = 1
# sanity checks
assert 0 <= self._id
if self._cat == "1":
assert self._id < 0x40
else:
assert self._id < 0x80
assert self._type in TYPES
def __str__(self):
return repr([self._name, self._cat, self._id, self._variants, self._flags])
def GetDasmInfo(self):
lst = []
def extract(match):
s = match.group()[1:]
assert s in DASM_ARGS
fmt, val = DASM_ARGS[s]
lst.append(val)
return fmt
s = re.sub("%.", extract, self._dasm)
return s, lst
def GetCdecSum(self):
lst = []
n = 1
for f in VARIANT_CANONICAL_ORDER:
if f in self._flags:
c, s = VARIANTS[f]
lst.append(" + ")
if n != 1:
lst.append("%d*" % n)
lst.append(s)
n *=c
return "".join(lst)
def EmitDasm(self, f, prefix):
opcode, args = self.GetDasmInfo()
args = [", " + a for a in args]
print("%scase 0x%02x:" % (prefix, self._id), file=f)
print("%s util::stream_format(stream, \"%s\"%s);" % (prefix, opcode, "".join(args)), file=f)
print("%s break;" % prefix, file=f)
def EmitCdec(self, f, prefix, no, empty):
print("%scase 0x%02x: // %s" % (prefix, self._id, self._name), file=f)
if not empty:
print("%s *op = %s%s;" % (prefix, no, self.GetCdecSum()), file=f)
if self._type == "f":
for l in self._run:
print(prefix + l, file=f)
else:
l = TYPES[self._type]
if l:
print(prefix + l, file=f)
print("%s break;" % prefix, file=f)
def ExpandCintrp(self, line, values):
def extract(match):
s = match.group()[1:]
assert s in PDESC_EXPAND
# call the right expand_XXX function
return PDESC_EXPAND[s](values)
return re.sub("%[a-z0-9]+", extract, line)
def PreprocessRunString(self):
out = []
for r in self._run:
if "%wa(" in r:
assert r.endswith(");")
r = r[0:-2].replace("%wa(", "%wa1 ") + ";"
out.append(r)
out.append("%wa2")
elif "%wd(" in r:
assert r.endswith(");")
r = r[0:-2].replace("%wd(", "%wd1 ") + ";"
out.append(r)
elif "%wc(" in r:
assert r.endswith(");")
r = r[0:-2].replace("%wc(", "%wc1 ") + ";"
out.append(r)
elif "%b(" in r:
assert r.endswith(");")
r = r[0:-2].replace("%b(", "%b1") + ";"
out.append(r)
out.append("%b2")
elif "%sfai(" in r:
assert r.endswith(");")
r = r[0:-2].replace("%sfai(", "")
r = r.replace(",", " = %sfai1", 1)
out.append(r + "%sfai2;")
else:
out.append(r)
return out
def EmitCintrpRecurse(self, f, prefix, no, flags_fixed, flags_unfixed):
if not flags_unfixed:
vals = []
for v in VARIANT_CANONICAL_ORDER:
if v in flags_fixed:
vals.append("%s=%d" % (v, flags_fixed[v]))
out = ["void tms57002_device::ex_%d(const icd *i) // %s %s" % (no, self._name, " ".join(vals))]
out.append("{")
out.append("\tuint32_t c; (void)c;")
out.append("\tuint32_t d; (void)d;")
out.append("\tint64_t r; (void)r;")
for line in self.PreprocessRunString():
exp = self.ExpandCintrp(line, flags_fixed)
# ensure we're not outputing a = a;
if not CheckSelfAssign(exp):
out.append(exp)
out.append("}")
out.append("")
EmitWithPrefix(f, out, prefix)
return no + 1
x = flags_unfixed.pop(-1)
n = VARIANTS[x][0]
for i in range(n):
flags_fixed[x] = i
no = self.EmitCintrpRecurse(f, prefix, no, flags_fixed, flags_unfixed)
flags_unfixed.append(x)
return no
def EmitCintrp(self, f, prefix, no):
if not self._run:
return no
flags = [fn for fn in VARIANT_CANONICAL_ORDER
if fn in self._flags]
return self.EmitCintrpRecurse(f, prefix, no, {}, flags)
def Finalize(self):
def extract(match):
s = match.group()[1:]
assert s in PDESC
self._flags.update(PDESC[s][1])
# result does not matter
return "X"
for line in self._run:
# ignore result of substitution
re.sub("%[a-z0-9]+", extract, line)
for f in self._flags:
self._variants *= VARIANTS[f][0]
def AddInfo(self, line):
if self._dasm is None:
self._dasm = line.lstrip()
else:
self._run.append(line)
def LoadLst(filename):
instructions = []
ins = None
for n, line in enumerate(io.open(filename, "r")):
line = line.rstrip()
if not line and ins:
# new lines separate intructions
ins.Finalize()
ins = None
elif line[0] in [" ", "\t"]:
assert ins
ins.AddInfo(line)
else:
ins = Instruction(line)
instructions.append(ins)
if ins:
ins.Finalize()
return instructions
def EmitDasm(f, ins_list):
ins_list.sort(key=lambda x : (x._cat, x._id))
last_cat = ""
for i in ins_list:
cat = i._cat[0]
if cat != last_cat:
if last_cat:
print("#endif", file=f)
print("", file=f)
print("#ifdef DASM" + cat, file=f)
last_cat = cat
i.EmitDasm(f, " ")
print("", file=f)
print("#endif", file=f)
print("", file=f)
def EmitCdec(f, ins_list):
ins_list.sort(key=lambda x : (x._cat, x._id))
no = 4
last_cat = ""
for i in ins_list:
if not i._run: continue
cat = i._cat.upper()
if cat == "2B": cat = "2A"
if cat == "3": continue
if cat != last_cat:
if last_cat:
print("#endif", file=f)
print("", file=f)
print("#ifdef CDEC" + cat, file=f)
last_cat = cat
i.EmitCdec(f, "", no, i._cat == "2b")
no += i._variants
print("", file=f)
no = 4
for i in ins_list:
if not i._run: continue
cat = i._cat.upper()
if cat == "2A": cat = "2B"
if cat == "1":
no += i._variants
continue
if cat != last_cat:
if last_cat:
print("#endif", file=f)
print("", file=f)
print("#ifdef CDEC" + cat, file=f)
last_cat = cat
i.EmitCdec(f, "", no, i._cat == "2a")
no += i._variants
print("", file=f)
print("#endif", file=f)
print("", file=f)
def EmitCintrp(f, ins_list):
ins_list.sort(key=lambda x : (x._cat, x._id))
print("#ifdef CINTRP", file=f)
no = 4
for i in ins_list:
no = i.EmitCintrp(f, "", no)
print("#endif", file=f)
return no
def EmitCintrpDecl(f, ins_list, no):
ins_list.sort(key=lambda x : (x._cat, x._id))
print("#ifdef CINTRPDECL", file=f)
for i in range(4, no):
print("void ex_%d(const icd *i);" % i, file=f)
print("#endif", file=f)
def EmitCintrpSwitch(f, ins_list, no):
ins_list.sort(key=lambda x : (x._cat, x._id))
print("#ifdef CINTRPSWITCH", file=f)
for i in range(4, no):
print("case %d: ex_%d(i); break;" % (i, i), file=f)
print("#endif", file=f)
def CheckSelfAssign(line):
ls = line.split('=')
if len(ls) != 2:
return False
lhs = ls[0].strip()
rhs = ls[1].strip().rstrip(';')
return lhs == rhs
m = sys.argv[1]
ins_list = LoadLst(sys.argv[2])
try:
f = open(sys.argv[3], "w")
except Exception:
err = sys.exc_info()[1]
sys.stderr.write("cannot write file %s [%s]\n" % (sys.argv[3], err))
sys.exit(1)
if m == "d":
EmitDasm(f, ins_list)
else:
EmitCdec(f, ins_list)
no = EmitCintrp(f, ins_list)
EmitCintrpDecl(f, ins_list, no)
EmitCintrpSwitch(f, ins_list, no)
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