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; RTL - A Formal Theory of Register-Transfer Logic and Computer Arithmetic
; Copyright (C) 1995-2013 Advanced Mirco Devices, Inc.
;
; Contact:
; David Russinoff
; 1106 W 9th St., Austin, TX 78703
; http://www.russsinoff.com/
;
; See license file books/rtl/rel9/license.txt.
;
; Author: David M. Russinoff (david@russinoff.com)
(in-package "ACL2")
;(set-enforce-redundancy t)
(local (include-book "base"))
;;These macros facilitate localization of events:
(defmacro local-defun (&rest body)
(list 'local (cons 'defun body)))
(defmacro local-defund (&rest body)
(list 'local (cons 'defund body)))
(defmacro local-defthm (&rest body)
(list 'local (cons 'defthm body)))
(defmacro local-defthmd (&rest body)
(list 'local (cons 'defthmd body)))
(defmacro local-in-theory (&rest body)
(cons 'local
(cons (cons 'in-theory (append body 'nil))
'nil)))
(defmacro defbvecp (name formals width &key thm-name hyp hints)
(let* ((thm-name
(or thm-name
(intern-in-package-of-symbol
(concatenate 'string
(if (consp width)
"BV-ARRP$"
"BVECP$")
(symbol-name name))
name)))
(x (cons name formals))
(typed-term (if (consp width)
(list 'ag 'index x)
x))
(bvecp-concl (if (consp width)
(list 'bv-arrp x (car (last width)))
(list 'bvecp x width)))
(concl (list 'and
(list 'integerp typed-term)
(list '<= 0 typed-term))))
(list* 'defthm thm-name
(if hyp
(list 'implies hyp bvecp-concl)
bvecp-concl)
:rule-classes
(list
:rewrite
(list :forward-chaining :trigger-terms (list x))
(list :type-prescription
:corollary
(if hyp
(list 'implies hyp concl)
concl)
:typed-term typed-term
;; hints for the corollary
:hints
(if (consp width)
'(("Goal"
:in-theory
'(implies bvecp
bv-arrp-implies-nonnegative-integerp)))
'(("Goal"
:in-theory
'(implies bvecp))))))
(if hints (list :hints hints) nil))))
(defun sub1-induction (n)
(if (zp n)
n
(sub1-induction (1- n))))
; These will be the functions to disable in acl2 proofs about signal bodies.
; We use this in the compiler.
;BOZO This doesn't include cons, which can now appear in signals defs. I think that's okay, right? think
;about this and remove the BOZO
(defconst *rtl-operators-after-macro-expansion*
'(log= log<>
log< log<= log> log>=
comp2< comp2<= comp2> comp2>=
land lior lxor lnot
logand1 logior1 logxor1
shft
cat mulcat
bits bitn setbits setbitn
ag as
* + ; from macroexpansion of mod* or mod+
;mod- ;now a macro!
floor rem decode encode
;; bind ; handled specially in fixup-term
;; if1 ; a macro, so we don't disable it
;; quote, n!, arr0 ; handled specially in fixup-term
natp1 ; doesn't matter, only occurs in for-loop defuns (must be enabled in those proofs anyway)
mk-bvarr mk-bvec
))
; Macro fast-and puts conjunctions in a tree form, which can avoid stack
; overflows by ACL2's translate functions.
(defun split-list (lst lo hi)
(cond ((endp lst)
(mv lo hi))
((endp (cdr lst))
(mv (cons (car lst) lo) hi))
(t
(split-list (cddr lst)
(cons (car lst) lo)
(cons (cadr lst) hi)))))
(defun fast-and-fn (conjuncts)
(declare (xargs :mode :program))
(cond ((endp conjuncts) ''t)
((endp (cdr conjuncts)) (car conjuncts))
(t
(mv-let (hi lo)
(split-list conjuncts () ())
(list 'if
(fast-and-fn hi)
(fast-and-fn lo)
'nil)))))
(defmacro fast-and (&rest conjuncts)
(fast-and-fn conjuncts))
(defmacro defsig (name param body)
(declare (ignore param))
(let ((realname (intern-in-package-of-symbol
(concatenate 'string
(symbol-name name)
"$")
name)))
`(progn (defund ,realname (n $path)
,body)
(defmacro ,name (n)
(list ',realname n '$path))
(add-macro-alias ,name ,realname))))
(defmacro defsigd (name params body)
(let ((realname (intern-in-package-of-symbol
(concatenate 'string (symbol-name name) "$")
name)))
`(progn (defund ,realname (,@params $path)
,body)
(defmacro ,name ,params
(list ',realname ,@params '$path))
(add-macro-alias ,name ,realname))))
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