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parseinstrs: Minor refactoring of trie entries

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This commit is contained in:
Alexis Engelke
2023-03-19 21:28:19 +01:00
parent 262370046c
commit e247ead397
1 changed files with 7 additions and 7 deletions
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14
parseinstrs.py
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@@ -333,8 +333,8 @@ class EntryKind(Enum):
TABLE_VEX = 6
TABLE_ROOT = -1
@property
def is_instr(self):
return self == EntryKind.INSTR or self == EntryKind.WEAKINSTR
def is_table(self):
return self != EntryKind.INSTR and self != EntryKind.WEAKINSTR
opcode_regex = re.compile(
r"^(?:(?P<prefixes>(?P<vex>E?VEX\.)?(?P<legacy>NP|66|F2|F3|NFx)\." +
@@ -471,7 +471,7 @@ class Trie:
return len(self.trie) - 1
def _clone(self, elem):
if not elem or elem[0].is_instr:
if not elem or not elem[0].is_table:
return elem
new_num = self._add_table(elem[0])
self.trie[new_num] = [self._clone(e) for e in self.trie[elem[1]]]
@@ -534,7 +534,7 @@ class Trie:
entry = self.trie[entry_num]
if not entry[entry_idx] or entry[entry_idx][0] == EntryKind.WEAKINSTR:
kind = EntryKind.INSTR if not weak else EntryKind.WEAKINSTR
entry[entry_idx] = kind, descidx
entry[entry_idx] = kind, descidx << 3
elif not weak:
raise Exception(f"redundant non-weak {opcode}")
@@ -546,7 +546,7 @@ class Trie:
# Replace previous synonyms
entry = self.trie[num]
for i, elem in enumerate(entry):
if elem and not elem[0].is_instr and elem[1] in synonyms:
if elem and elem[0].is_table and elem[1] in synonyms:
entry[i] = synonyms[elem[1]]
unique_entry = tuple(entry)
@@ -578,8 +578,8 @@ class Trie:
continue
for i, elem in enumerate(entry, start=off):
if elem is not None:
value = elem[1] << 2 if elem[0].is_instr else offsets[elem[1]]
data[i] = (value << 1) | (elem[0].value & 7)
value = (offsets[elem[1]] << 1) if elem[0].is_table else elem[1]
data[i] = value | (elem[0].value & 7)
return tuple(data), [offsets[v] for _, v in self.trie[0]]
@property