Access the |X86ISA|::|PAGE| field of a ia32e-pde-2mb-pagebits bit structure.
(ia32e-pde-2mb-pagebits->page x) → page
Function:
(defun ia32e-pde-2mb-pagebits->page$inline (x) (declare (xargs :guard (ia32e-pde-2mb-pagebits-p x))) (mbe :logic (let ((x (ia32e-pde-2mb-pagebits-fix x))) (part-select x :low 21 :width 31)) :exec (the (unsigned-byte 31) (logand (the (unsigned-byte 31) 2147483647) (the (unsigned-byte 43) (ash (the (unsigned-byte 64) x) -21))))))
Theorem:
(defthm 31bits-p-of-ia32e-pde-2mb-pagebits->page (b* ((page (ia32e-pde-2mb-pagebits->page$inline x))) (31bits-p page)) :rule-classes :rewrite)
Theorem:
(defthm ia32e-pde-2mb-pagebits->page$inline-of-ia32e-pde-2mb-pagebits-fix-x (equal (ia32e-pde-2mb-pagebits->page$inline (ia32e-pde-2mb-pagebits-fix x)) (ia32e-pde-2mb-pagebits->page$inline x)))
Theorem:
(defthm ia32e-pde-2mb-pagebits->page$inline-ia32e-pde-2mb-pagebits-equiv-congruence-on-x (implies (ia32e-pde-2mb-pagebits-equiv x x-equiv) (equal (ia32e-pde-2mb-pagebits->page$inline x) (ia32e-pde-2mb-pagebits->page$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm ia32e-pde-2mb-pagebits->page-of-ia32e-pde-2mb-pagebits (equal (ia32e-pde-2mb-pagebits->page (ia32e-pde-2mb-pagebits p r/w u/s pwt pcd a d ps g res1 pat res2 page res3 xd)) (31bits-fix page)))
Theorem:
(defthm ia32e-pde-2mb-pagebits->page-of-write-with-mask (implies (and (fty::bitstruct-read-over-write-hyps x ia32e-pde-2mb-pagebits-equiv-under-mask) (ia32e-pde-2mb-pagebits-equiv-under-mask x y fty::mask) (equal (logand (lognot fty::mask) 4503599625273344) 0)) (equal (ia32e-pde-2mb-pagebits->page x) (ia32e-pde-2mb-pagebits->page y))))