• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
  • Debugging
  • Std
  • 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
              • !xmmi-size
              • Xmmi-size
              • Wx64
              • Wx32
              • Wx128
              • Rx64
              • Rx32
              • Rx128
            • !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
            • !xmmi-size
            • Xmmi-size
            • Wx64
            • Wx32
            • Wx128
            • Rx64
            • Rx32
            • Rx128
          • 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

• Xmms-reads-and-writes

!xmmi-size

Write val to low nbytes of an XMM register; upper bits of the ZMM register are preserved.

Signature

(!xmmi-size nbytes index val x86) → x86

Returns

x86 — Type (x86p x86), given (x86p x86).

Definitions and Theorems

Function: !xmmi-size$inline

(defun !xmmi-size$inline (nbytes index val x86)
 (declare (xargs :stobjs (x86)))
 (declare (type (unsigned-byte 5) nbytes)
          (type (unsigned-byte 4) index)
          (type integer val))
 (declare (xargs :guard (and (member nbytes '(4 8 16))
                             (unsigned-byte-p (ash nbytes 3) val))))
 (case nbytes
   (4 (wx32 index val x86))
   (8 (wx64 index val x86))
   (16 (wx128 index val x86))
   (otherwise x86)))

Theorem: x86p-of-!xmmi-size

(defthm x86p-of-!xmmi-size
  (implies (x86p x86)
           (b* ((x86 (!xmmi-size$inline nbytes index val x86)))
             (x86p x86)))
  :rule-classes :rewrite)