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Ia32_eferbits

Ia32_eferbits->res1

Access the |X86ISA|::|RES1| field of a ia32_eferbits bit structure.

Signature
(ia32_eferbits->res1 x) → res1
Arguments: x — Guard (ia32_eferbits-p x).
Returns: res1 — Type (7bits-p res1).

Definitions and Theorems

Function: ia32_eferbits->res1$inline

(defun ia32_eferbits->res1$inline (x)
 (declare (xargs :guard (ia32_eferbits-p x)))
 (mbe
    :logic
    (let ((x (ia32_eferbits-fix x)))
      (part-select x :low 1 :width 7))
    :exec (the (unsigned-byte 7)
               (logand (the (unsigned-byte 7) 127)
                       (the (unsigned-byte 11)
                            (ash (the (unsigned-byte 12) x) -1))))))

Theorem: 7bits-p-of-ia32_eferbits->res1

(defthm 7bits-p-of-ia32_eferbits->res1
  (b* ((res1 (ia32_eferbits->res1$inline x)))
    (7bits-p res1))
  :rule-classes :rewrite)

Theorem: ia32_eferbits->res1$inline-of-ia32_eferbits-fix-x

(defthm ia32_eferbits->res1$inline-of-ia32_eferbits-fix-x
  (equal (ia32_eferbits->res1$inline (ia32_eferbits-fix x))
         (ia32_eferbits->res1$inline x)))

Theorem: ia32_eferbits->res1$inline-ia32_eferbits-equiv-congruence-on-x

(defthm
     ia32_eferbits->res1$inline-ia32_eferbits-equiv-congruence-on-x
  (implies (ia32_eferbits-equiv x x-equiv)
           (equal (ia32_eferbits->res1$inline x)
                  (ia32_eferbits->res1$inline x-equiv)))
  :rule-classes :congruence)

Theorem: ia32_eferbits->res1-of-ia32_eferbits

(defthm ia32_eferbits->res1-of-ia32_eferbits
 (equal
     (ia32_eferbits->res1 (ia32_eferbits sce res1 lme res2 lma nxe))
     (7bits-fix res1)))

Theorem: ia32_eferbits->res1-of-write-with-mask

(defthm ia32_eferbits->res1-of-write-with-mask
  (implies (and (fty::bitstruct-read-over-write-hyps
                     x ia32_eferbits-equiv-under-mask)
                (ia32_eferbits-equiv-under-mask x y fty::mask)
                (equal (logand (lognot fty::mask) 254)
                       0))
           (equal (ia32_eferbits->res1 x)
                  (ia32_eferbits->res1 y))))