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Elf32_sym

Elf32_sym->info

Access the |EXLD|::|INFO| field of a elf32_sym bit structure.

Signature
(elf32_sym->info x) → info
Arguments: x — Guard (elf32_sym-p x).
Returns: info — Type (elf_bits8-p info).

Definitions and Theorems

Function: elf32_sym->info

(defun elf32_sym->info (x)
  (declare (xargs :guard (elf32_sym-p x)))
  (mbe :logic
       (let ((x (elf32_sym-fix x)))
         (part-select x :low 96 :width 8))
       :exec (the (unsigned-byte 8)
                  (logand (the (unsigned-byte 8) 255)
                          (the (unsigned-byte 32)
                               (ash (the (unsigned-byte 128) x)
                                    -96))))))

Theorem: elf_bits8-p-of-elf32_sym->info

(defthm elf_bits8-p-of-elf32_sym->info
  (b* ((info (elf32_sym->info x)))
    (elf_bits8-p info))
  :rule-classes :rewrite)

Theorem: elf32_sym->info-of-elf32_sym-fix-x

(defthm elf32_sym->info-of-elf32_sym-fix-x
  (equal (elf32_sym->info (elf32_sym-fix x))
         (elf32_sym->info x)))

Theorem: elf32_sym->info-elf32_sym-equiv-congruence-on-x

(defthm elf32_sym->info-elf32_sym-equiv-congruence-on-x
  (implies (elf32_sym-equiv x x-equiv)
           (equal (elf32_sym->info x)
                  (elf32_sym->info x-equiv)))
  :rule-classes :congruence)

Theorem: elf32_sym->info-of-elf32_sym

(defthm elf32_sym->info-of-elf32_sym
 (equal
      (elf32_sym->info (elf32_sym name value size info other shndx))
      (elf_bits8-fix info)))

Theorem: elf32_sym->info-of-write-with-mask

(defthm elf32_sym->info-of-write-with-mask
  (implies (and (fty::bitstruct-read-over-write-hyps
                     x elf32_sym-equiv-under-mask)
                (elf32_sym-equiv-under-mask x y fty::mask)
                (equal (logand (lognot fty::mask)
                               20203181441137406086353707335680)
                       0))
           (equal (elf32_sym->info x)
                  (elf32_sym->info y))))