• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
  • Debugging
  • Std
  • Community
  • Proof-automation
  • Macro-libraries
  • ACL2
  • Interfacing-tools
  • Hardware-verification
  • Software-verification
    • Kestrel-books
    • X86isa
      • Program-execution
      • Sdm-instruction-set-summary
      • Tlb
      • Running-linux
      • Introduction
      • Asmtest
      • X86isa-build-instructions
      • Publications
      • Contributors
      • Machine
        • X86isa-state
        • Syscalls
        • Cpuid
        • Linear-memory
        • Rflag-specifications
        • Characterizing-undefined-behavior
        • Top-level-memory
        • App-view
        • X86-decoder
        • Physical-memory
        • Decoding-and-spec-utils
        • Instructions
        • Register-readers-and-writers
          • Zmms-reads-and-writes
            • Xmms-reads-and-writes
            • !zmmi-size
            • Wz64
            • Wz32
            • Wz128
            • Wz256
            • Vector-access-type-p
            • Rz512
            • Zmmi-size
            • Wz512
            • Rz64
            • Rz32
            • Rz256
            • Rz128
          • Gprs-reads-and-writes
          • Mmx-registers-reads-and-writes
          • Xmms-reads-and-writes
          • Rflags-reads-and-writes
          • Gpr-indices
          • Vex-vvvv-reg-index
          • Msr-reads-and-writes
          • Ctr-reads-and-writes
        • X86-modes
        • Segmentation
        • Other-non-deterministic-computations
        • Environment
        • Paging
      • Implemented-opcodes
      • To-do
      • Proof-utilities
      • Peripherals
      • Model-validation
      • Modelcalls
      • Concrete-simulation-examples
      • Utils
      • Debugging-code-proofs
    • Axe
    • Execloader
  • Math
  • Testing-utilities

• Zmms-reads-and-writes

Wz128

Write val to low 128 bits of a ZMM register

Signature

(wz128 reg val x86 &key (regtype '*zmm-access*)) → x86

Arguments

regtype — Guard (vector-access-type-p regtype).

Upper bits: For XMM registers, upper 384 bits are preserved if regtype is *xmm-access*; for *vex-xmm-access*, these bits are zeroed out. For *ymm-access*, upper 256 bits are zeroed out. For *zmm-access*, no upper bits are zeroed out.

Definitions and Theorems

Function: wz128$inline

(defun wz128$inline (reg val x86 regtype)
  (declare (xargs :stobjs (x86)))
  (declare (type (unsigned-byte 5) reg)
           (type (unsigned-byte 128) val))
  (declare (xargs :guard (vector-access-type-p regtype)))
  (b* ((data (the (unsigned-byte 512)
                  (zmmi reg x86)))
       (regtype (the (unsigned-byte 3) regtype))
       (data (case regtype
               (2 (loghead 128 data))
               (3 (loghead 256 data))
               (otherwise data)))
       (val (the (unsigned-byte 128) (n128 val))))
    (!zmmi reg
           (part-install val data
                         :low 0
                         :width 128)
           x86)))

Theorem: x86p-wz128

(defthm x86p-wz128
  (implies (x86p x86)
           (x86p (wz128 reg val x86 :regtype access))))