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• Mach-o-header

Mach-o-header-fix

Fixing function for mach-o-header structures.

Signature

(mach-o-header-fix x) → new-x

Arguments

x — Guard (mach-o-header-p x).

Returns

new-x — Type (mach-o-header-p new-x).

Definitions and Theorems

Function: mach-o-header-fix$inline

(defun mach-o-header-fix$inline (x)
 (declare (xargs :guard (mach-o-header-p x)))
 (let ((__function__ 'mach-o-header-fix))
  (declare (ignorable __function__))
  (mbe
     :logic
     (b* ((magic (nfix (cdr (std::da-nth 0 x))))
          (cputype (nfix (cdr (std::da-nth 1 x))))
          (cpusubtype (nfix (cdr (std::da-nth 2 x))))
          (filetype (nfix (cdr (std::da-nth 3 x))))
          (ncmds (nfix (cdr (std::da-nth 4 x))))
          (sizeofcmds (nfix (cdr (std::da-nth 5 x))))
          (flags (nfix (cdr (std::da-nth 6 x))))
          (reserved (acl2::maybe-natp-fix (cdr (std::da-nth 7 x)))))
       (list (cons 'magic magic)
             (cons 'cputype cputype)
             (cons 'cpusubtype cpusubtype)
             (cons 'filetype filetype)
             (cons 'ncmds ncmds)
             (cons 'sizeofcmds sizeofcmds)
             (cons 'flags flags)
             (cons 'reserved reserved)))
     :exec x)))

Theorem: mach-o-header-p-of-mach-o-header-fix

(defthm mach-o-header-p-of-mach-o-header-fix
  (b* ((new-x (mach-o-header-fix$inline x)))
    (mach-o-header-p new-x))
  :rule-classes :rewrite)

Theorem: mach-o-header-fix-when-mach-o-header-p

(defthm mach-o-header-fix-when-mach-o-header-p
  (implies (mach-o-header-p x)
           (equal (mach-o-header-fix x) x)))

Function: mach-o-header-equiv$inline

(defun mach-o-header-equiv$inline (x y)
  (declare (xargs :guard (and (mach-o-header-p x)
                              (mach-o-header-p y))))
  (equal (mach-o-header-fix x)
         (mach-o-header-fix y)))

Theorem: mach-o-header-equiv-is-an-equivalence

(defthm mach-o-header-equiv-is-an-equivalence
  (and (booleanp (mach-o-header-equiv x y))
       (mach-o-header-equiv x x)
       (implies (mach-o-header-equiv x y)
                (mach-o-header-equiv y x))
       (implies (and (mach-o-header-equiv x y)
                     (mach-o-header-equiv y z))
                (mach-o-header-equiv x z)))
  :rule-classes (:equivalence))

Theorem: mach-o-header-equiv-implies-equal-mach-o-header-fix-1

(defthm mach-o-header-equiv-implies-equal-mach-o-header-fix-1
  (implies (mach-o-header-equiv x x-equiv)
           (equal (mach-o-header-fix x)
                  (mach-o-header-fix x-equiv)))
  :rule-classes (:congruence))

Theorem: mach-o-header-fix-under-mach-o-header-equiv

(defthm mach-o-header-fix-under-mach-o-header-equiv
  (mach-o-header-equiv (mach-o-header-fix x)
                       x)
  :rule-classes (:rewrite :rewrite-quoted-constant))

Theorem: equal-of-mach-o-header-fix-1-forward-to-mach-o-header-equiv

(defthm equal-of-mach-o-header-fix-1-forward-to-mach-o-header-equiv
  (implies (equal (mach-o-header-fix x) y)
           (mach-o-header-equiv x y))
  :rule-classes :forward-chaining)

Theorem: equal-of-mach-o-header-fix-2-forward-to-mach-o-header-equiv

(defthm equal-of-mach-o-header-fix-2-forward-to-mach-o-header-equiv
  (implies (equal x (mach-o-header-fix y))
           (mach-o-header-equiv x y))
  :rule-classes :forward-chaining)

Theorem: mach-o-header-equiv-of-mach-o-header-fix-1-forward

(defthm mach-o-header-equiv-of-mach-o-header-fix-1-forward
  (implies (mach-o-header-equiv (mach-o-header-fix x)
                                y)
           (mach-o-header-equiv x y))
  :rule-classes :forward-chaining)

Theorem: mach-o-header-equiv-of-mach-o-header-fix-2-forward

(defthm mach-o-header-equiv-of-mach-o-header-fix-2-forward
  (implies (mach-o-header-equiv x (mach-o-header-fix y))
           (mach-o-header-equiv x y))
  :rule-classes :forward-chaining)