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effc0c7e49dc03ea4fda429117528edf58c0db44
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90 Commits

Author SHA1 Message Date
Alexis Engelke
1b5461036e decode: Don't walk escape opcodes in tables 2020-06-27 17:33:58 +02:00
Alexis Engelke
3ad518e22e decode: Store op types early and compact encoding 
* The encoding of operand types in the decode table now only requires 9
  bits instead of the previous 16 bits.
* Operand types are decoded before the operands itself are stored. This
  allows to ignore REX.RB prefixed for specific register types.
 2020-06-27 17:33:58 +02:00
Alexis Engelke
618d90ed42 instrs: Encode memory size for FPU instructions 2020-06-27 17:33:58 +02:00
Alexis Engelke
807d8a817b decode: Change imm_control to get rid of imm_byte 2020-06-19 14:04:17 +02:00
Alexis Engelke
f978785df3 parseinstrs: Make TrieEntry always hashable 2020-06-17 18:36:18 +02:00
Alexis Engelke
93a61a0ff1 parseinstrs: Remove mnemonic from instr bitstruct 2020-06-17 17:16:53 +02:00
Alexis Engelke
38f52c98b5 parseinstrs: Store mnemonic enum entry in trie 2020-06-17 17:08:23 +02:00
Alexis Engelke
af5b36a58e parseinstrs: Don't needlessly convert to bytes 2020-06-17 16:49:27 +02:00
Alexis Engelke
f4b41a7e80 decode: Use uint16_t for trie 2020-06-17 16:44:22 +02:00
Alexis Engelke
1fedc069b6 parseinstrs: Propagate unpacked data for trie 2020-06-17 16:34:27 +02:00
Alexis Engelke
da4cbc237f parseinstr: Use typing.NamedTuple 2020-05-10 14:20:34 +02:00
Alexis Engelke
513a913feb decode: Store CL as register operand for shifts 2020-02-19 16:53:59 +01:00
Alexis Engelke
e65086c76c parseinstr: Separate fields for operand properties 2020-02-16 18:12:07 +01:00
Alexis Engelke
e59117538f parseinstr: Include mnemnonic in flag bitstruct 2020-02-16 18:05:32 +01:00
Alexis Engelke
f6a66ea4fb Use special root table for VEX 
Some instruction opcodes have an entirely different encoding when a VEX
prefix is present. For example, 0f41 is CMOVNO without mandatory
prefixes while VEX.NP.W0.L1.0f41 is KANDW with a mandatory prefix. To
avoid collisions, the VEX prefix is better handled as a completely
separate decode tree, at the cost of a slight increase in table size.
 2020-02-10 20:34:37 +01:00
Alexis Engelke
b376d0d0f8 parser: Use exceptions instead of assertions 2020-02-10 20:34:37 +01:00
Alexis Engelke
19b76c809e Add MMX and several other instructions 2019-11-03 11:56:24 +01:00
Alexis Engelke
bd6c7ceebe Begin enforcing memory operand requirements 2019-11-02 19:21:29 +01:00
Alexis Engelke
32d65fbf19 Fix CR/DR move operand sizes 2019-11-02 19:20:47 +01:00
Alexis Engelke
194a7d6831 Add REP-prefix table 2019-11-02 19:01:23 +01:00
Alexis Engelke
7682541a00 Refactor opcode parsing 2019-11-02 19:00:46 +01:00
Alexis Engelke
8c51339c49 Add moves from/to control/debug registers 2019-11-02 17:09:41 +01:00
Alexis Engelke
3f278bc6cc Store register type in decoded instruction 2019-05-05 12:53:10 +02:00
Alexis Engelke
899278600b Refactor encoding of bit field 2019-05-05 12:26:20 +02:00
Alexis Engelke
dff78c5a86 Support VSIB encoding 2019-04-27 11:16:09 +02:00
Alexis Engelke
14c5590413 Set size of rare memory operands to zero 2019-02-24 17:11:32 +01:00
Alexis Engelke
f7f0b322c7 Enforce mandatory L0/L1 in VEX prefix 2019-02-24 15:45:00 +01:00
Alexis Engelke
b2b29239b1 Disallow LOCK prefix for non-lockable instructions 2019-02-24 09:26:23 +01:00
Alexis Engelke
67ae0f8de8 Store 32-bit and 64-bit data in a single table 2019-02-23 16:33:01 +01:00
Alexis Engelke
256806e4b6 Use argparse 2019-02-23 15:26:04 +01:00
Alexis Engelke
da683d850a Simplify storing of opcode to description mapping 2019-02-23 12:18:50 +01:00
Alexis Engelke
10e7a41972 Simplify handling of 32-bit and 64-bit encodings 2019-02-23 12:06:04 +01:00
Alexis Engelke
50ba38627b Store instruction description as namedtuple 2019-02-23 11:53:25 +01:00
Alexis Engelke
3fbd0ff5b5 Deduplicate tables in addition to instructions 2019-02-23 11:09:24 +01:00
Alexis Engelke
ffa28357ce Support tables with multiple roots 2019-02-23 11:04:57 +01:00
Alexis Engelke
3abf29d63e Major rework of API and improved documentation 2019-01-23 20:03:40 +01:00
Alexis Engelke
fbc37b9514 Annotate generated table with comments 2019-01-13 13:15:28 +01:00
Alexis Engelke
ed53b4a54d Support 32 bit and 64 bit decoding with one binary 
It is possible to configure the build process such that decoding of 32
bit and 64 bit instructions can be chosen at runtime using an additional
parameter of the decode function. The header file is now entirely
architecture-independent and no longer required any previous defines.

Decoding x86-64 still requires a 64-bit pointer size.
 2019-01-13 11:58:59 +01:00
Alexis Engelke
83ea2f0769 Unify mnemonic table for 32 and 64 bit 
As there is not much difference between the two mnemonic tables, it is
possible to unify them. As a consequence, the instruction types no
longer differ between 32 and 64 bit decodings.
 2019-01-13 09:47:24 +01:00
Alexis Engelke
a3f77dbf49 Initial commit 2018-04-08 13:45:13 +00:00