1 from collections
import namedtuple
3 import operator
as _operator
4 import functools
as _functools
6 from openpower
.decoder
.power_enums
import find_wiki_file
as _find_wiki_file
7 from openpower
.decoder
.selectable_int
import (
8 SelectableInt
as _SelectableInt
,
10 selectconcat
as _selectconcat
,
11 selectltu
as _selectltu
,
15 class RemapError(ValueError):
20 def __init__(self
, cls
):
22 return super().__init
__()
24 def __get__(self
, instance
, owner
):
27 return self
.__cls
(storage
=instance
.storage
)
29 def __set__(self
, instance
, value
):
31 raise AttributeError("read-only attribute")
32 self
.__cls
(storage
=instance
.storage
).assign(value
)
35 @_functools.total_ordering
37 def __init__(self
, storage
, *args
, **kwargs
):
38 if not isinstance(storage
, _SelectableInt
):
39 raise ValueError(storage
)
41 self
.storage
= storage
46 def __post_init__(self
, *args
, **kwargs
):
49 def __binary_operator(self
, op
, other
):
50 span
= dict.fromkeys(self
.__class
__.span
).keys()
51 lhs
= _selectconcat(*(self
.storage
[bit
] for bit
in span
))
53 if isinstance(other
, Reference
):
54 span
= dict.fromkeys(other
.__class
__.span
).keys()
55 rhs
= _selectconcat(*(other
.storage
[bit
] for bit
in span
))
56 elif isinstance(other
, int):
57 bits
= len(self
.__class
__)
58 if other
.bit_length() > bits
:
59 raise OverflowError(other
)
60 rhs
= _SelectableInt(value
=other
, bits
=bits
)
61 elif isinstance(other
, _SelectableInt
):
64 raise ValueError(other
)
68 def __lt__(self
, other
):
69 return self
.__binary
_operator
(_selectltu
, other
)
71 def __eq__(self
, other
):
72 return self
.__binary
_operator
(_operator
.eq
, other
)
75 return bool(int(self
))
78 span
= dict.fromkeys(self
.__class
__.span
).keys()
79 return int(_selectconcat(*(self
.storage
[bit
] for bit
in span
)))
82 return int(self
).__index
__()
89 def storage(self
, storage
):
90 if not isinstance(storage
, _SelectableInt
):
91 raise ValueError(storage
)
93 self
.__storage
= storage
95 def assign(self
, value
):
96 if isinstance(value
, int):
97 bits
= len(self
.__class
__)
98 value
= _SelectableInt(value
=value
, bits
=bits
)
99 if not isinstance(value
, _SelectableInt
):
100 raise ValueError(value
)
102 span
= frozenset(self
.__class
__.span
)
103 for (src_bit
, dst_bit
) in enumerate(span
):
104 self
.storage
[dst_bit
] = value
[src_bit
]
107 class FieldMeta(type):
108 def __new__(metacls
, clsname
, bases
, ns
, items
=()):
109 assert "__members__" not in ns
113 if not isinstance(item
, int):
114 raise ValueError(item
)
116 raise ValueError(item
)
119 ns
["__members__"] = tuple(members
)
121 return super().__new
__(metacls
, clsname
, bases
, ns
)
124 if not cls
.__members
__:
126 return f
"{cls.__name__}{cls.__members__!r}"
129 yield from cls
.__members
__
132 return len(cls
.__members
__)
134 def __getitem__(cls
, selector
):
135 if isinstance(selector
, int):
136 selector
= (selector
,)
140 if not isinstance(idx
, int):
141 raise ValueError(selector
)
142 item
= cls
.__members
__[idx
]
145 return cls
.__class
__(cls
.__name
__, (Field
,), {}, items
=items
)
147 def remap(cls
, scheme
):
148 if isinstance(scheme
, type) and issubclass(scheme
, Mapping
):
149 scheme
= range(len(scheme
))
150 scheme
= cls
.__class
__(cls
.__name
__, (cls
,), {}, items
=scheme
)
154 elif len(cls
) > len(scheme
):
155 llen
= f
"len(scheme)"
156 rlen
= f
"len({cls.__name__})"
157 raise RemapError(f
"{llen} != {rlen}")
160 ns
["__doc__"] = cls
.__doc
__
161 items
= map(lambda item
: scheme
.__members
__[item
], cls
)
163 return cls
.__class
__(cls
.__name
__, (cls
,), ns
, items
=items
)
167 return cls
.__members
__
170 class Field(Reference
, metaclass
=FieldMeta
):
172 return f
"[{len(self.__class__)}]0x{int(self):x}"
175 for bit
in self
.__class
__:
176 yield self
.storage
[bit
]
178 def __getitem__(self
, key
):
179 if isinstance(key
, int):
180 bit
= self
.storage
[self
.__class
__.__members
__[key
]]
181 return _SelectableInt(value
=bit
, bits
=1)
182 if isinstance(key
, slice):
183 assert key
.step
is None or key
.step
== 1
184 key
= range(key
.start
, key
.stop
)
186 return _selectconcat(*(self
[bit
] for bit
in tuple(key
)))
189 def traverse(cls
, path
):
190 yield (path
, cls
.__members
__)
193 class MappingMeta(type):
194 def __new__(metacls
, clsname
, bases
, ns
):
198 if isinstance(cls
, metacls
):
199 members
.update(cls
.__members
__)
201 for (name
, cls
) in ns
.get("__annotations__", {}).items():
202 if not (isinstance(cls
, type) and
203 issubclass(cls
, (Mapping
, Field
))):
204 raise ValueError(f
"{clsname}.{name}: {cls!r}")
208 members
[name
] = cls
.remap(ns
[name
])
209 except RemapError
as error
:
210 raise RemapError(f
"{name}: {error}")
213 raise ValueError(f
"{clsname}.{name}: missing initializer")
216 ns
["__members__"] = members
217 for (name
, cls
) in members
.items():
218 ns
[name
] = Descriptor(cls
)
220 return super().__new
__(metacls
, clsname
, bases
, ns
)
223 return f
"{cls.__name__}({cls.__members__!r})"
226 yield from cls
.__members
__.items()
230 for field
in cls
.__members
__.values():
231 length
= max(length
, len(field
))
234 def __getitem__(cls
, selector
):
235 return cls
.__members
__["_"][selector
]
237 def remap(cls
, scheme
):
241 for (name
, field
) in cls
:
242 annotations
[name
] = field
.remap(scheme
)
243 ns
["__annotations__"] = annotations
244 ns
["__doc__"] = cls
.__doc
__
246 return cls
.__class
__(cls
.__name
__, (cls
,), ns
)
250 for field
in cls
.__members
__.values():
251 yield from field
.span
254 class Mapping(Reference
, metaclass
=MappingMeta
):
255 def __init__(self
, storage
, **kwargs
):
257 for (name
, cls
) in self
.__class
__:
258 members
[name
] = cls(storage
)
260 self
.__members
= members
262 return super().__init
__(storage
, **kwargs
)
265 items
= tuple(f
"{name}={field!r}" for (name
, field
) in self
)
266 return f
"{{{', '.join(items)}}}"
269 yield from self
.__members
.items()
271 def __getitem__(self
, key
):
272 if isinstance(key
, (int, slice, list, tuple, range)):
273 return self
["_"][key
]
275 return self
.__members
[key
]
278 def traverse(cls
, path
):
279 for (name
, member
) in cls
.__members
__.items():
281 yield from member
.traverse(path
=path
)
283 yield from member
.traverse(path
=name
)
285 yield from member
.traverse(path
=f
"{path}.{name}")
288 def decode_instructions(form
):
292 if l
.strip().startswith("Formats"):
293 l
= l
.strip().split(":")[-1]
294 l
= l
.replace(" ", "")
298 res
[fmt
] = [accum
[0]]
300 res
[fmt
].append(accum
[0])
303 accum
.append(l
.strip())
307 def decode_form_header(hdr
):
311 for f
in hdr
.split("|"):
315 idx
= int(f
.strip().split(' ')[0])
321 def find_unique(d
, key
):
325 while "%s_%d" % (key
, idx
) in d
:
327 return "%s_%d" % (key
, idx
)
330 def decode_line(header
, line
):
334 prev_fieldname
= None
335 for f
in line
.split("|"):
338 end
= count
+ len(f
) + 1
339 fieldname
= f
.strip()
340 if not fieldname
or fieldname
.startswith('/'):
341 if prev_fieldname
is not None:
342 res
[prev_fieldname
] = (res
[prev_fieldname
], header
[count
])
343 prev_fieldname
= None
346 bitstart
= header
[count
]
347 if prev_fieldname
is not None:
348 res
[prev_fieldname
] = (res
[prev_fieldname
], bitstart
)
349 res
[fieldname
] = bitstart
351 prev_fieldname
= fieldname
352 res
[prev_fieldname
] = (bitstart
, 32)
356 def decode_form(form
):
357 header
= decode_form_header(form
[0])
359 for line
in form
[1:]:
360 dec
= decode_line(header
, line
)
366 for k
, (start
, end
) in l
.items():
368 if (start
, end
) == fields
[k
]:
369 continue # already in and matching for this Form
371 alternate
= "%s_%d" % (k
, falternate
[k
])
372 if (start
, end
) == fields
[alternate
]:
374 falternate
[k
] = fidx
= falternate
.get(k
, 0) + 1
375 fields
["%s_%d" % (k
, fidx
)] = (start
, end
)
377 fields
[k
] = (start
, end
)
383 def __init__(self
, bitkls
=_BitRange
, bitargs
=(), fname
=None,
386 self
.bitargs
= bitargs
388 assert name_on_wiki
is None
390 name_on_wiki
= "fields.text"
391 self
.fname
= _find_wiki_file(name_on_wiki
)
394 def form_names(self
):
395 return self
.instrs
.keys()
397 def create_specs(self
):
398 self
.forms
, self
.instrs
= self
.decode_fields()
399 forms
= self
.form_names
400 #print ("specs", self.forms, forms)
402 fields
= self
.instrs
[form
]
404 Fields
= namedtuple("Fields", fk
)
405 instr
= Fields(**fields
)
406 setattr(self
, "Form%s" % form
, instr
)
407 # now add in some commonly-used fields (should be done automatically)
408 # note that these should only be ones which are the same on all Forms
409 # note: these are from microwatt insn_helpers.vhdl
410 self
.common_fields
= {
411 "PO": self
.Formall
.PO
,
412 "FRS": self
.FormX
.FRS
,
413 "FRT": self
.FormX
.FRT
,
414 "FRA": self
.FormX
.FRA
,
415 "FRB": self
.FormX
.FRB
,
416 "FRC": self
.FormA
.FRC
,
421 "RC": self
.FormVA
.RC
,
425 "SH32": self
.FormM
.SH
,
426 "sh": self
.FormMD
.sh
,
427 "MB32": self
.FormM
.MB
,
428 "ME32": self
.FormM
.ME
,
433 "OE": self
.FormXO
.OE
,
436 "CR": self
.FormXL
.XO
,
437 "BB": self
.FormXL
.BB
,
438 "BA": self
.FormXL
.BA
,
439 "BT": self
.FormXL
.BT
,
440 "FXM": self
.FormXFX
.FXM
,
441 "BO": self
.FormXL
.BO
,
442 "BI": self
.FormXL
.BI
,
443 "BH": self
.FormXL
.BH
,
445 "DS": self
.FormDS
.DS
,
451 "SPR": self
.FormXFX
.SPR
}
452 for k
, v
in self
.common_fields
.items():
455 def decode_fields(self
):
456 with
open(self
.fname
) as f
:
458 #print ("decode", txt)
469 forms
[heading
].append(l
)
472 heading
= l
[1:].strip()
473 # if heading.startswith('1.6.28'): # skip instr fields for now
475 heading
= heading
.split(' ')[-1]
482 for hdr
, form
in forms
.items():
483 if heading
== 'Fields':
484 i
= decode_instructions(form
)
485 for form
, field
in i
.items():
486 inst
[form
] = self
.decode_instruction_fields(field
)
488 # res[hdr] = decode_form(form)
491 def decode_instruction_fields(self
, fields
):
494 f
, spec
= field
.strip().split(" ")
495 ss
= spec
[1:-1].split(",")
498 individualfields
= []
499 for f0
, s0
in zip(fs
, ss
):
500 txt
= "%s (%s)" % (f0
, s0
)
501 individualfields
.append(txt
)
503 res
.update(self
.decode_instruction_fields(
505 d
= self
.bitkls(*self
.bitargs
)
519 f
= f
.replace(",", "_")
520 unique
= find_unique(res
, f
)
526 if __name__
== '__main__':
529 forms
, instrs
= dec
.forms
, dec
.instrs
530 for form
, fields
in instrs
.items():
532 for field
, bits
in fields
.items():
533 print("\tfield", field
, bits
)