• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
  • Debugging
  • Std
  • Proof-automation
  • Macro-libraries
  • ACL2
  • Interfacing-tools
  • Hardware-verification
    • Gl
    • Esim
    • Vl2014
      • Warnings
      • Primitives
      • Use-set
      • Syntax
      • Getting-started
      • Utilities
      • Loader
      • Transforms
      • Lint
      • Mlib
        • Scopestack
        • Filtering-by-name
        • Vl-namefactory
        • Substitution
        • Allexprs
        • Hid-tools
        • Vl-consteval
        • Range-tools
        • Lvalexprs
        • Hierarchy
        • Finding-by-name
        • Expr-tools
        • Expr-slicing
        • Stripping-functions
        • Stmt-tools
        • Modnamespace
        • Vl-parse-expr-from-str
        • Welltyped
        • Reordering-by-name
        • Flat-warnings
        • Genblob
        • Expr-building
        • Datatype-tools
        • Syscalls
        • Relocate
        • Expr-cleaning
        • Namemangle
        • Caremask
        • Port-tools
        • Lvalues
          • Vl-expr-lvaluep
          • Lvaluecheck
            • Vl-plainarglist-lvaluecheck
            • Vl-plainarg-lvaluecheck
            • Vl-taskdecllist-lvaluecheck
            • Vl-gateinstlist-lvaluecheck
            • Vl-arguments-lvaluecheck
            • Vl-modinstlist-lvaluecheck
            • Vl-initiallist-lvaluecheck
            • Vl-fundecllist-lvaluecheck
            • Vl-assignlist-lvaluecheck
            • Vl-alwayslist-lvaluecheck
            • Vl-modinst-lvaluecheck
            • Vl-gateinst-lvaluecheck
            • Vl-assign-lvaluecheck
            • Vl-taskdecl-lvaluecheck
            • Vl-initial-lvaluecheck
            • Vl-fundecl-lvaluecheck
            • Vl-always-lvaluecheck
      • Server
      • Kit
      • Printer
      • Esim-vl
      • Well-formedness
    • Sv
    • Fgl
    • Vwsim
    • Vl
    • X86isa
    • Svl
    • Rtl
  • Software-verification
  • Math
  • Testing-utilities

• Vl-assign-p
• Lvaluecheck

Vl-assign-lvaluecheck

Check well-formedness of lvalues in a vl-assign-p.

Signature

(vl-assign-lvaluecheck x warnings) → new-warnings

Arguments

x — Guard (vl-assign-p x).

warnings — Ordinary warnings accumulator.
    Guard (vl-warninglist-p warnings).

Returns

new-warnings — Type (vl-warninglist-p new-warnings).

We check the lvalues throughout x for well-formedness in the sense of vl-expr-lvaluep, and generate non-fatal warnings for any problematic lvalues encountered.

Definitions and Theorems

Function: vl-assign-lvaluecheck

(defun vl-assign-lvaluecheck (x warnings)
  (declare (xargs :guard (and (vl-assign-p x)
                              (vl-warninglist-p warnings))))
  (declare (xargs :guard t))
  (let ((__function__ 'vl-assign-lvaluecheck))
    (declare (ignorable __function__))
    (b* ((lvalue (vl-assign->lvalue x))
         ((when (vl-expr-lvaluep lvalue)) (ok))
         (loc (vl-assign->loc x)))
      (warn :type :vl-bad-lvalue
            :msg "~l0: assignment to bad lvalue ~a1."
            :args (list loc lvalue)))))

Theorem: vl-warninglist-p-of-vl-assign-lvaluecheck

(defthm vl-warninglist-p-of-vl-assign-lvaluecheck
  (b* ((new-warnings (vl-assign-lvaluecheck x warnings)))
    (vl-warninglist-p new-warnings))
  :rule-classes :rewrite)

Theorem: vl-assign-lvaluecheck-of-vl-assign-fix-x

(defthm vl-assign-lvaluecheck-of-vl-assign-fix-x
  (equal (vl-assign-lvaluecheck (vl-assign-fix x)
                                warnings)
         (vl-assign-lvaluecheck x warnings)))

Theorem: vl-assign-lvaluecheck-vl-assign-equiv-congruence-on-x

(defthm vl-assign-lvaluecheck-vl-assign-equiv-congruence-on-x
  (implies (vl-assign-equiv x x-equiv)
           (equal (vl-assign-lvaluecheck x warnings)
                  (vl-assign-lvaluecheck x-equiv warnings)))
  :rule-classes :congruence)

Theorem: vl-assign-lvaluecheck-of-vl-warninglist-fix-warnings

(defthm vl-assign-lvaluecheck-of-vl-warninglist-fix-warnings
  (equal (vl-assign-lvaluecheck x (vl-warninglist-fix warnings))
         (vl-assign-lvaluecheck x warnings)))

Theorem: vl-assign-lvaluecheck-vl-warninglist-equiv-congruence-on-warnings

(defthm
  vl-assign-lvaluecheck-vl-warninglist-equiv-congruence-on-warnings
  (implies (vl-warninglist-equiv warnings warnings-equiv)
           (equal (vl-assign-lvaluecheck x warnings)
                  (vl-assign-lvaluecheck x warnings-equiv)))
  :rule-classes :congruence)