v2.0.0 Final

This is the final release of Zydis 2.

Detailed changelog (since v2.0.0-beta1)

• Improved instruction decoding

  • Fixed decoding of XOP instructions
  • Fixed handling of illegal LOCK prefixes for XOP/VEX/EVEX/MVEX instructions
  • Significantly improved detection of bad register values
  • Added check for invalid GATHER registers
  • Fixed EVEX/MVEX.R' not beeing ignored in 16- and 32-bit mode

• Improved formatter

  • Omitting an operand by using formatter hooks will now correctly omit the semicolon as well
  • ZYDIS_FORMATTER_HOOK_PRE_OPERAND and ZYDIS_FORMATTER_HOOK_POST_OPERAND can now be used to omit a specific operand
  • Added ZydisFormatterFormatOperand and ZydisFormatterFormatOperandEx (this won't print AVX-512/KNC decorators)
  • User defined callbacks should return ZYDIS_STATUS_SKIP_OPERAND to omit an operand (returning ZYDIS_STATUS_SUCCESS without writing to the buffer is now deprecated)

• Added new instructions

  • PCONFIG
  • EXTRQ, INSERTQ, MOVNTSD, MOVNTSS (SSE4a)
  • MONITORX, MWAITX
  • ENCLV
  • VPOPCNTD/VPOPCNTQ instructions with 128- and 256-bit vector-length
  • Added missing VEX-encoded GFNI instructions

• Fixed some instruction definitions

  • Changed XSAVE/XSAVEOPT memory operand from W to RW
  • Changed amount of bytes popped from stack by the IRET instruction
  • Fixed LWPINS and LWPVAL instructions
  • Fixed exception-class of some GFNI instructions
  • Fixed RDRAND and RDSEED instructions
  • Fixed SYSRET instruction
  • Fixed XCHG R8, RAX falsely beeing decoded as NOP
  • Fixed operand size of some conditional jump instructions
  • Changed destination operand action of PEXT, PDEP and ANDN from read/write to write-only

• Misc bugfixes

  • Fixed formatting of memory operands with explicit segment register
  • Fixed a bug in ZydisRegisterGetClass that caused the function to report invalid register-classes for IP and FLAGS registers
  • Changed type of implicit memory operands to ZYDIS_MEMOP_TYPE_MEM instead of ZYDIS_MEMOP_TYPE_INVALID

v2.0.0-beta1

This is the first beta release, the public interface is now expected to be stable.

Detailed changelog (since v2.0.0-alpha2)

• Added new ISA-extensions

  • BITALG
  • GFNI
  • RDPID
  • VAES
  • VBMI2
  • VNNI
  • VPCLMULQDQ

• Added implicit operands for instructions with stack-operations

  • Implicit SP/ESP/RSP register-operand
  • Implicit [SP/ESP/RSP] memory-operand

• Implemented decoder-modes to support ISA-extensions that conflict with existing instructions

  • Added decoder-modes
    • ZYDIS_DECODER_MODE_MINIMAL
    • ZYDIS_DECODER_MODE_AMD_BRANCHES
    • ZYDIS_DECODER_MODE_KNC
    • ZYDIS_DECODER_MODE_MPX
    • ZYDIS_DECODER_MODE_CET
    • ZYDIS_DECODER_MODE_LZCNT
    • ZYDIS_DECODER_MODE_TZCNT
  • Removed ZydisDecoderInitEx and the possibility to pass a decoder-granularity (use ZYDIS_DECODER_MODE_MINIMAL instead)

• Decoder improvements

  • Instructions which are only valid in protected-mode are now rejected, if ZYDIS_MACHINE_MODE_REAL_16 is used
  • The scale of memory-operands is now correctly set to 1 in 16-bit mode, if an index register was specified

• Major formatter changes

  • Switched to custom length-aware ZydisString "class" to improve performance and usability
  • Added ZydisFormatterSetAttribute function for simple formatter customization
    • ZYDIS_FORMATTER_PROP_UPPERCASE
    • ZYDIS_FORMATTER_PROP_FORCE_MEMSEG
    • ZYDIS_FORMATTER_PROP_FORCE_MEMSIZE
    • ZYDIS_FORMATTER_PROP_ADDR_FORMAT
    • ZYDIS_FORMATTER_PROP_DISP_FORMAT
    • ZYDIS_FORMATTER_PROP_IMM_FORMAT
    • ZYDIS_FORMATTER_PROP_HEX_UPPERCASE
    • ZYDIS_FORMATTER_PROP_HEX_PREFIX
    • ZYDIS_FORMATTER_PROP_HEX_SUFFIX
    • ZYDIS_FORMATTER_PROP_HEX_PADDING_ADDR
    • ZYDIS_FORMATTER_PROP_HEX_PADDING_DISP
    • ZYDIS_FORMATTER_PROP_HEX_PADDING_IMM
  • Hook refactorings
    • Added ZYDIS_FORMATTER_HOOK_PRE_OPERAND, ZYDIS_FORMATTER_HOOK_POST_OPERAND and ZYDIS_FORMATTER_HOOK_PRINT_REGISTER
    • Renamed ZYDIS_FORMATTER_HOOK_PRINT_DISPLACEMENT to ZYDIS_FORMATTER_HOOK_PRINT_DISP
    • Renamed ZYDIS_FORMATTER_HOOK_PRINT_IMMEDIATE to ZYDIS_FORMATTER_HOOK_PRINT_IMM
    • Renamed ZYDIS_FORMATTER_HOOK_PRINT_OPERANDSIZE to ZYDIS_FORMATTER_HOOK_PRINT_MEMSIZE
    • Removed ZYDIS_FORMATTER_HOOK_PRINT_SEGMENT

• Improved no-libc support

  • Added ZYDIS_NO_LIBC CMake switch
  • When enabled, removes dependency on memset, memcpy and strlen
  • Added custom integer types
  • Added own NULL

• Added project logo

  • Contributed by LekoArts

• Added Visual Studio project files

  • Static-, shared- and kernel-mode configuration
  • Contributed by Mattiwatti