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• Ia32e-paging

Paging-entry-no-page-fault-p-did-fault?

Signature

(paging-entry-no-page-fault-p-did-fault? 
     u/s-all 
     r/w-all x/d-all wp smep smap ac nxe 
     implicit-supervisor-access r-w-x cpl) 
 
  → 
fault?

Returns

fault? — Type (booleanp fault?).

Definitions and Theorems

Function: paging-entry-no-page-fault-p-did-fault?

(defun paging-entry-no-page-fault-p-did-fault?
       (u/s-all r/w-all x/d-all wp smep smap ac nxe
                implicit-supervisor-access r-w-x cpl)
  (declare (type (unsigned-byte 1) u/s-all)
           (type (unsigned-byte 1) r/w-all)
           (type (unsigned-byte 1) x/d-all)
           (type (unsigned-byte 1) wp)
           (type (unsigned-byte 1) smep)
           (type (unsigned-byte 1) smap)
           (type (unsigned-byte 1) ac)
           (type (unsigned-byte 1) nxe)
           (type (unsigned-byte 1)
                 implicit-supervisor-access)
           (type (member :r :w :x) r-w-x)
           (type (unsigned-byte 2) cpl))
  (declare
       (xargs :guard (or (not (equal implicit-supervisor-access 1))
                         (< cpl 3))))
  (let ((__function__ 'paging-entry-no-page-fault-p-did-fault?))
    (declare (ignorable __function__))
    (or (and (equal r-w-x :r)
             (if (< cpl 3)
                 (if (equal u/s-all 0)
                     nil
                   (if (equal smap 0)
                       nil
                     (or (equal implicit-supervisor-access 1)
                         (equal ac 0))))
               (equal u/s-all 0)))
        (and (equal r-w-x :w)
             (if (< cpl 3)
                 (if (equal u/s-all 0)
                     (and (equal wp 1) (equal r/w-all 0))
                   (if (equal wp 0)
                       (if (equal smap 0)
                           nil
                         (or (equal implicit-supervisor-access 1)
                             (equal ac 0)))
                     (if (equal smap 0)
                         (equal r/w-all 0)
                       (if (and (equal implicit-supervisor-access 0)
                                (equal ac 1))
                           (equal r/w-all 0)
                         t))))
               (or (equal u/s-all 0)
                   (equal r/w-all 0))))
        (and (equal r-w-x :x)
             (if (< cpl 3)
                 (if (equal u/s-all 0)
                     (if (equal nxe 0) nil (equal x/d-all 1))
                   (if (equal smep 0)
                       (if (equal nxe 0) nil (equal x/d-all 1))
                     t))
               (or (equal u/s-all 0)
                   (and (equal nxe 1)
                        (equal x/d-all 1))))))))

Theorem: booleanp-of-paging-entry-no-page-fault-p-did-fault?

(defthm booleanp-of-paging-entry-no-page-fault-p-did-fault?
  (b* ((fault? (paging-entry-no-page-fault-p-did-fault?
                    u/s-all
                    r/w-all x/d-all wp smep smap ac nxe
                    implicit-supervisor-access r-w-x cpl)))
    (booleanp fault?))
  :rule-classes :rewrite)