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• Physical-memory

Wm-low-32

Signature

(wm-low-32 addr val x86) → x86

Definitions and Theorems

Function: wm-low-32$inline

(defun wm-low-32$inline (addr val x86)
  (declare (xargs :stobjs (x86)))
  (declare (type (unsigned-byte 52) addr)
           (type (unsigned-byte 32) val))
  (declare (xargs :guard (and (not (app-view x86))
                              (< (+ 3 addr) *mem-size-in-bytes*))))
  (if (mbt (not (app-view x86)))
      (let ((addr (mbe :logic (ifix addr) :exec addr)))
        (b* (((the (unsigned-byte 8) byte0)
              (mbe :logic (part-select val :low 0 :width 8)
                   :exec (logand 255 val)))
             ((the (unsigned-byte 8) byte1)
              (mbe :logic (part-select val :low 8 :width 8)
                   :exec (logand 255 (ash val -8))))
             ((the (unsigned-byte 8) byte2)
              (mbe :logic (part-select val :low 16 :width 8)
                   :exec (logand 255 (ash val -16))))
             ((the (unsigned-byte 8) byte3)
              (mbe :logic (part-select val :low 24 :width 8)
                   :exec (logand 255 (ash val -24))))
             (x86 (!memi addr byte0 x86))
             (x86 (!memi (+ 1 addr) byte1 x86))
             (x86 (!memi (+ 2 addr) byte2 x86))
             (x86 (!memi (+ 3 addr) byte3 x86)))
          x86))
    x86))

Theorem: x86p-wm-low-32

(defthm x86p-wm-low-32
  (implies (x86p x86)
           (x86p (wm-low-32 addr val x86)))
  :rule-classes (:rewrite :type-prescription))

Theorem: xr-wm-low-32

(defthm xr-wm-low-32
  (implies (not (equal fld :mem))
           (equal (xr fld index (wm-low-32 addr val x86))
                  (xr fld index x86))))

Theorem: wm-low-32-xw

(defthm wm-low-32-xw
  (implies (and (not (equal fld :mem))
                (not (equal fld :app-view)))
           (equal (wm-low-32 addr val (xw fld index value x86))
                  (xw fld
                      index value (wm-low-32 addr val x86)))))