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Elf64_sym

Elf64_sym->info

Access the |EXLD|::|INFO| field of a elf64_sym bit structure.

Signature
(elf64_sym->info x) → info
Arguments: x — Guard (elf64_sym-p x).
Returns: info — Type (elf_bits8-p info).

Definitions and Theorems

Function: elf64_sym->info

(defun elf64_sym->info (x)
  (declare (xargs :guard (elf64_sym-p x)))
  (mbe :logic
       (let ((x (elf64_sym-fix x)))
         (part-select x :low 32 :width 8))
       :exec (the (unsigned-byte 8)
                  (logand (the (unsigned-byte 8) 255)
                          (the (unsigned-byte 160)
                               (ash (the (unsigned-byte 192) x)
                                    -32))))))

Theorem: elf_bits8-p-of-elf64_sym->info

(defthm elf_bits8-p-of-elf64_sym->info
  (b* ((info (elf64_sym->info x)))
    (elf_bits8-p info))
  :rule-classes :rewrite)

Theorem: elf64_sym->info-of-elf64_sym-fix-x

(defthm elf64_sym->info-of-elf64_sym-fix-x
  (equal (elf64_sym->info (elf64_sym-fix x))
         (elf64_sym->info x)))

Theorem: elf64_sym->info-elf64_sym-equiv-congruence-on-x

(defthm elf64_sym->info-elf64_sym-equiv-congruence-on-x
  (implies (elf64_sym-equiv x x-equiv)
           (equal (elf64_sym->info x)
                  (elf64_sym->info x-equiv)))
  :rule-classes :congruence)

Theorem: elf64_sym->info-of-elf64_sym

(defthm elf64_sym->info-of-elf64_sym
 (equal
      (elf64_sym->info (elf64_sym name info other shndx value size))
      (elf_bits8-fix info)))

Theorem: elf64_sym->info-of-write-with-mask

(defthm elf64_sym->info-of-write-with-mask
  (implies (and (fty::bitstruct-read-over-write-hyps
                     x elf64_sym-equiv-under-mask)
                (elf64_sym-equiv-under-mask x y fty::mask)
                (equal (logand (lognot fty::mask)
                               1095216660480)
                       0))
           (equal (elf64_sym->info x)
                  (elf64_sym->info y))))