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• Linear-memory-in-app-view

Wvm64

Signature

(wvm64 addr val x86) → (mv * x86)

Definitions and Theorems

Function: wvm64$inline

(defun wvm64$inline (addr val x86)
 (declare (xargs :stobjs (x86)))
 (declare (type (signed-byte 48) addr)
          (type (unsigned-byte 64) val))
 (if
  (mbt (canonical-address-p addr))
  (let* ((4+addr (the (signed-byte 49)
                      (+ 4 (the (signed-byte 48) addr))))
         (7+addr (the (signed-byte 49)
                      (+ 7 (the (signed-byte 48) addr)))))
    (if (mbe :logic (canonical-address-p 7+addr)
             :exec (< (the (signed-byte 49) 7+addr)
                      140737488355328))
        (b* ((dword0 (mbe :logic (part-select val :low 0 :width 32)
                          :exec (logand 4294967295 val)))
             (dword1 (mbe :logic (part-select val :low 32 :width 32)
                          :exec (logand 4294967295 (ash val -32))))
             ((mv flg0 x86) (wvm32 addr dword0 x86))
             ((mv flg1 x86)
              (wvm32 4+addr dword1 x86)))
          (mbe :logic
               (if (or flg0 flg1)
                   (mv 'wvm64 x86)
                 (mv nil x86))
               :exec (mv nil x86)))
      (mv 'wvm64 x86)))
  (mv 'wvm64 x86)))

Theorem: wvm64-no-error

(defthm wvm64-no-error
  (implies (and (canonical-address-p addr)
                (canonical-address-p (+ 7 addr)))
           (equal (mv-nth 0 (wvm64 addr val x86))
                  nil)))

Theorem: x86p-mv-nth-1-wvm64

(defthm x86p-mv-nth-1-wvm64
  (implies (x86p x86)
           (x86p (mv-nth 1 (wvm64 addr val x86))))
  :rule-classes (:type-prescription :rewrite))

Theorem: xr-wmv64-app-view

(defthm xr-wmv64-app-view
  (implies (not (equal fld :mem))
           (equal (xr fld
                      index (mv-nth 1 (wvm64 addr val x86)))
                  (xr fld index x86))))

Theorem: wvm64-xw-app-view

(defthm wvm64-xw-app-view
 (implies
      (not (equal fld :mem))
      (and (equal (mv-nth 0
                          (wvm64 addr val (xw fld index value x86)))
                  (mv-nth 0 (wvm64 addr val x86)))
           (equal (mv-nth 1
                          (wvm64 addr val (xw fld index value x86)))
                  (xw fld index value
                      (mv-nth 1 (wvm64 addr val x86)))))))