T0b1/fadec
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Store instruction description as namedtuple

Browse Source
This commit is contained in:
Alexis Engelke
2019-02-23 11:53:25 +01:00
parent 3fbd0ff5b5
commit 50ba38627b
1 changed files with 25 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
parseinstrs.py
View File

@@ -1,7 +1,7 @@
#!/usr/bin/python3 #!/usr/bin/python3
from binascii import unhexlify from binascii import unhexlify
from collections import OrderedDict, defaultdict from collections import OrderedDict, defaultdict, namedtuple
from copy import copy from copy import copy
from enum import Enum, IntEnum from enum import Enum, IntEnum
from itertools import accumulate from itertools import accumulate
@@ -91,29 +91,30 @@ OPKIND_LOOKUP = {
"FPU": (0, 0), "FPU": (0, 0),
} }
def parse_desc(desc, ignore_flag): class InstrDesc(namedtuple("InstrDesc", "mnemonic,flags,encoding")):
desc = desc.split() __slots__ = ()
if ignore_flag in desc[6:]: @classmethod
return None def parse(cls, desc):
desc = desc.split()
fixed_opsz = set() fixed_opsz = set()
opsizes = 0 opsizes = 0
for i, opkind in enumerate(desc[1:5]): for i, opkind in enumerate(desc[1:5]):
enc_size, fixed_size = OPKIND_LOOKUP[opkind] enc_size, fixed_size = OPKIND_LOOKUP[opkind]
if enc_size == 1: fixed_opsz.add(fixed_size) if enc_size == 1: fixed_opsz.add(fixed_size)
opsizes |= enc_size << 2 * i opsizes |= enc_size << 2 * i
flags = copy(ENCODINGS[desc[0]]) flags = copy(ENCODINGS[desc[0]])
flags.operand_sizes = opsizes flags.operand_sizes = opsizes
if fixed_opsz: flags.gp_fixed_operand_size = next(iter(fixed_opsz)) if fixed_opsz: flags.gp_fixed_operand_size = next(iter(fixed_opsz))
# Miscellaneous Flags # Miscellaneous Flags
if "DEF64" in desc[6:]: flags.gp_size_def64 = 1 if "DEF64" in desc[6:]: flags.gp_size_def64 = 1
if "SIZE_8" in desc[6:]: flags.gp_size_8 = 1 if "SIZE_8" in desc[6:]: flags.gp_size_8 = 1
if "INSTR_WIDTH" in desc[6:]: flags.gp_instr_width = 1 if "INSTR_WIDTH" in desc[6:]: flags.gp_instr_width = 1
if "IMM_8" in desc[6:]: flags.imm_byte = 1 if "IMM_8" in desc[6:]: flags.imm_byte = 1
return desc[5], flags._encode() return cls(desc[5], frozenset(desc[6:]), flags._encode())
class EntryKind(Enum): class EntryKind(Enum):
NONE = 0 NONE = 0
@@ -303,7 +304,7 @@ if __name__ == "__main__":
if line and line[0] != "#": if line and line[0] != "#":
opcode_string, desc = tuple(line.split(maxsplit=1)) opcode_string, desc = tuple(line.split(maxsplit=1))
for opcode in parse_opcode(opcode_string): for opcode in parse_opcode(opcode_string):
entries[opcode].append(desc) entries[opcode].append(InstrDesc.parse(desc))
mnemonics = set() mnemonics = set()
table32 = Table() table32 = Table()
@@ -311,12 +312,11 @@ if __name__ == "__main__":
masks = "ONLY64", "ONLY32" masks = "ONLY64", "ONLY32"
for opcode, descs in entries.items(): for opcode, descs in entries.items():
for table, ignore_mask in zip((table32, table64), masks): for table, ignore_mask in zip((table32, table64), masks):
parsed = [parse_desc(desc, ignore_mask) for desc in descs] parsed = [desc for desc in descs if ignore_mask not in desc.flags]
parsed = [desc for desc in parsed if desc is not None]
assert len(parsed) <= 1 assert len(parsed) <= 1
if parsed: if parsed:
mnemonics.add(parsed[0][0]) mnemonics.add(parsed[0].mnemonic)
table.add_opcode(opcode, parsed[0]) table.add_opcode(opcode, (parsed[0].mnemonic, parsed[0].encoding))
table32.deduplicate() table32.deduplicate()
table64.deduplicate() table64.deduplicate()