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• Reasoning-about-memory-reads-and-writes
• Physical-memory

Write-to-physical-memory

Signature

(write-to-physical-memory p-addrs value x86) → x86

Arguments

p-addrs — Guard (physical-address-listp p-addrs).

value — Guard (natp value).

Definitions and Theorems

Function: write-to-physical-memory

(defun write-to-physical-memory (p-addrs value x86)
  (declare (xargs :stobjs (x86)))
  (declare (xargs :guard (and (physical-address-listp p-addrs)
                              (natp value))))
  (declare (xargs :guard (not (app-view x86))))
  (let ((__function__ 'write-to-physical-memory))
    (declare (ignorable __function__))
    (if (endp p-addrs)
        x86
      (b* ((addr0 (car p-addrs))
           (byte0 (loghead 8 value))
           (x86 (!memi addr0 byte0 x86)))
        (write-to-physical-memory (cdr p-addrs)
                                  (logtail 8 value)
                                  x86)))))

Theorem: x86p-write-to-physical-memory

(defthm x86p-write-to-physical-memory
  (implies (and (x86p x86)
                (physical-address-listp p-addrs))
           (x86p (write-to-physical-memory p-addrs value x86))))

Theorem: xr-not-mem-write-to-physical-memory

(defthm xr-not-mem-write-to-physical-memory
  (implies (not (equal fld :mem))
           (equal (xr fld index
                      (write-to-physical-memory p-addrs bytes x86))
                  (xr fld index x86))))

Theorem: write-to-physical-memory-xw-in-sys-view

(defthm write-to-physical-memory-xw-in-sys-view
 (implies
  (not (equal fld :mem))
  (equal
   (write-to-physical-memory p-addrs bytes (xw fld index value x86))
   (xw fld index value
       (write-to-physical-memory p-addrs bytes x86)))))

Theorem: 64-bit-modep-of-write-to-physical-memory

(defthm 64-bit-modep-of-write-to-physical-memory
  (equal (64-bit-modep (write-to-physical-memory p-addrs value x86))
         (64-bit-modep x86)))

Theorem: x86-operation-mode-of-write-to-physical-memory

(defthm x86-operation-mode-of-write-to-physical-memory
 (equal
   (x86-operation-mode (write-to-physical-memory p-addrs value x86))
   (x86-operation-mode x86)))