6.0.0-Alpha11

September 21, 2026

Release 6.0.0-Alpha11 is the latest Capstone release.

What’s Changed

  • Xtensa: gate ESP32-S3 and HIFI3 ops behind CS_MODE_XTENSA_ESP32S3 by @germiBest in https://github.com/capstone-engine/capstone/pull/2979
  • AArch64: report NZCV access for MRS/MSR of NZCV by @gaul in https://github.com/capstone-engine/capstone/pull/3002
  • xtensa: sign-extend scaled offsets in decodeOffset_* helpers by @Samin061 in https://github.com/capstone-engine/capstone/pull/2997
  • Fix Xtensa test with wrong mode selection. by @Rot127 in https://github.com/capstone-engine/capstone/pull/3004
  • Xtensa: Fix Stack overflow by @Rot127 in https://github.com/capstone-engine/capstone/pull/3012
  • AArch64: Fix diet-mode NULL deref in printMatrixTileVector by @amit-sides in https://github.com/capstone-engine/capstone/pull/3017
  • HHPA: Correct name of r0 register - flags -> r0 by @Rot127 in https://github.com/capstone-engine/capstone/pull/3024
  • Fix read from uninitialized memory by @Rot127 in https://github.com/capstone-engine/capstone/pull/3011
  • Add MSAN build option to CMakeLists.txt by @Rot127 in https://github.com/capstone-engine/capstone/pull/3029
  • x86: use effective address size for the loop counter register by @phverg in https://github.com/capstone-engine/capstone/pull/3025
  • systemz: bounds-check register index in decodeRegisterClass by @jmestwa-coder in https://github.com/capstone-engine/capstone/pull/3044
  • x86: fix VMOVUPS memory operand access by @raaller in https://github.com/capstone-engine/capstone/pull/3035
  • PowerPC: Keep BI out of the CTR-only branch predicate by @phix33 in https://github.com/capstone-engine/capstone/pull/3043
  • Alpha: Fix implicit read/write details for some memory instructions by @atirna in https://github.com/capstone-engine/capstone/pull/3034
  • X86: Fix four AT&T operand-detail defects by @phix33 in https://github.com/capstone-engine/capstone/pull/3042
  • RISCV: Revamp flags to allow fine grained control over aliasing by @moste00 in https://github.com/capstone-engine/capstone/pull/3008
  • M68K: Fix fmove.x 96-bit extended immediate decode length and printing by @b1llow in https://github.com/capstone-engine/capstone/pull/3016
  • AArch64: fix Rt operand of the integer STLUR forms by @gaul in https://github.com/capstone-engine/capstone/pull/3046
  • AArch64: SYSL writes its Rt operand, it does not read it by @gaul in https://github.com/capstone-engine/capstone/pull/3045
  • x86: fix near RET decoding with 0x66 and REX.W by @raaller in https://github.com/capstone-engine/capstone/pull/3049
  • ARM/AArch64: Improve runtime of ARM/AArch64 register name patching. by @Rot127 in https://github.com/capstone-engine/capstone/pull/3048
  • Handle case of vsprintf returning oob pointer offset. by @Rot127 in https://github.com/capstone-engine/capstone/pull/3060
  • PowerPC: add mcrxr instruction support by @StilesCrisis in https://github.com/capstone-engine/capstone/pull/3065
  • X86: Zero the operand slot before filling it in the Intel implicit insert by @phix33 in https://github.com/capstone-engine/capstone/pull/3057
  • cstest: Compare the PPC branch details once and without requiring operands by @phix33 in https://github.com/capstone-engine/capstone/pull/3058
  • Add AI guidelines and requirements. by @Rot127 in https://github.com/capstone-engine/capstone/pull/3064
  • x86: Add missing access info for operand[3] of vmulps. by @raaller in https://github.com/capstone-engine/capstone/pull/3059
  • x86: fix EVEX writemask access in AT&T syntax by @raaller in https://github.com/capstone-engine/capstone/pull/3072
  • Replace all system allocations with cs_mem_ allocations. by @Rot127 in https://github.com/capstone-engine/capstone/pull/3074
  • x86: fix JO/JNO operand size in 64-bit mode by @raaller in https://github.com/capstone-engine/capstone/pull/3067
  • riscv: propagate register-class decode failure in custom decoders by @jmestwa-coder in https://github.com/capstone-engine/capstone/pull/3071
  • x86: Fix access of X86_CMPSL memory operands by @raaller in https://github.com/capstone-engine/capstone/pull/3080
  • Add AI guidance by @raaller in https://github.com/capstone-engine/capstone/pull/3081

New Contributors

  • @germiBest made their first contribution in https://github.com/capstone-engine/capstone/pull/2979
  • @gaul made their first contribution in https://github.com/capstone-engine/capstone/pull/3002
  • @amit-sides made their first contribution in https://github.com/capstone-engine/capstone/pull/3017
  • @phverg made their first contribution in https://github.com/capstone-engine/capstone/pull/3025
  • @raaller made their first contribution in https://github.com/capstone-engine/capstone/pull/3035
  • @atirna made their first contribution in https://github.com/capstone-engine/capstone/pull/3034
  • @StilesCrisis made their first contribution in https://github.com/capstone-engine/capstone/pull/3065

Full Changelog: https://github.com/capstone-engine/capstone/compare/6.0.0-Alpha10…6.0.0-Alpha11