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• Linear-memory

Wml08

Signature

(wml08 lin-addr val x86) → (mv * x86)

Definitions and Theorems

Function: wml08

(defun wml08 (lin-addr val x86)
  (declare (xargs :stobjs (x86)))
  (declare (type (signed-byte 48) lin-addr)
           (type (unsigned-byte 8) val))
  (declare (xargs :split-types t
                  :guard (and (canonical-address-p lin-addr)
                              (unsigned-byte-p 8 val))))
  (let ((__function__ 'wml08))
    (declare (ignorable __function__))
    (mbe :logic (wb 1 lin-addr :w val x86)
         :exec
         (if (app-view x86)
             (wvm08 lin-addr val x86)
           (b* (((mv flag (the (unsigned-byte 52) p-addr)
                     x86)
                 (la-to-pa lin-addr :w x86))
                ((when flag) (mv flag x86))
                (byte (mbe :logic (n08 val) :exec val))
                (x86 (!memi p-addr byte x86)))
             (mv nil x86))))))

Theorem: x86p-wml08

(defthm x86p-wml08
  (implies (force (x86p x86))
           (x86p (mv-nth 1 (wml08 lin-addr val x86))))
  :rule-classes (:rewrite :type-prescription))

Theorem: app-view-wml08-no-error

(defthm app-view-wml08-no-error
  (implies (and (app-view x86)
                (canonical-address-p addr))
           (equal (mv-nth 0 (wml08 addr val x86))
                  nil)))

Theorem: xr-wml08-app-view

(defthm xr-wml08-app-view
  (implies (and (app-view x86)
                (not (equal fld :mem)))
           (equal (xr fld
                      index (mv-nth 1 (wml08 addr val x86)))
                  (xr fld index x86))))

Theorem: xr-wml08-sys-view

(defthm xr-wml08-sys-view
  (implies (and (not (app-view x86))
                (not (equal fld :tlb))
                (not (equal fld :mem))
                (not (equal fld :fault)))
           (equal (xr fld
                      index (mv-nth 1 (wml08 addr val x86)))
                  (xr fld index x86))))

Theorem: wml08-xw-app-view

(defthm wml08-xw-app-view
 (implies
      (and (app-view x86)
           (not (equal fld :mem))
           (not (equal fld :app-view)))
      (and (equal (mv-nth 0
                          (wml08 addr val (xw fld index value x86)))
                  (mv-nth 0 (wml08 addr val x86)))
           (equal (mv-nth 1
                          (wml08 addr val (xw fld index value x86)))
                  (xw fld index value
                      (mv-nth 1 (wml08 addr val x86)))))))

Theorem: wml08-xw-system-mode

(defthm wml08-xw-system-mode
 (implies
      (and (not (app-view x86))
           (not (equal fld :tlb))
           (not (equal fld :fault))
           (not (equal fld :seg-visible))
           (not (equal fld :mem))
           (not (equal fld :ctr))
           (not (equal fld :rflags))
           (not (equal fld :msr))
           (not (equal fld :app-view))
           (not (equal fld :marking-view))
           (not (equal fld :implicit-supervisor-access)))
      (and (equal (mv-nth 0
                          (wml08 addr val (xw fld index value x86)))
                  (mv-nth 0 (wml08 addr val x86)))
           (equal (mv-nth 1
                          (wml08 addr val (xw fld index value x86)))
                  (xw fld index value
                      (mv-nth 1 (wml08 addr val x86)))))))

Theorem: wml08-xw-system-mode-rflags-not-ac

(defthm wml08-xw-system-mode-rflags-not-ac
 (implies
    (and (not (app-view x86))
         (equal (rflagsbits->ac value)
                (rflagsbits->ac (rflags x86))))
    (and (equal (mv-nth 0
                        (wml08 addr val (xw :rflags nil value x86)))
                (mv-nth 0 (wml08 addr val x86)))
         (equal (mv-nth 1
                        (wml08 addr val (xw :rflags nil value x86)))
                (xw :rflags nil value
                    (mv-nth 1 (wml08 addr val x86)))))))