1. 04 Dec, 2015 2 commits
  2. 20 Nov, 2015 1 commit
    • Robbert Krebbers's avatar
      Step-indexed order on CMRAs · 58096261
      Robbert Krebbers authored
      * Remove the order from RAs, it is now defined in terms of the ⋅ operation.
      * Define ownership using the step-indexed order.
      * Remove the order also from DRAs and change STS accordingly. While doing
        that, I changed STS to no longer use decidable token sets, which removes the
        requirement of decidable equality on tokens.
      58096261
  3. 19 Nov, 2015 1 commit
  4. 18 Nov, 2015 5 commits
  5. 17 Nov, 2015 3 commits
  6. 16 Nov, 2015 2 commits
  7. 11 Nov, 2015 1 commit
  8. 03 Feb, 2017 1 commit
  9. 01 Feb, 2017 3 commits
    • Robbert Krebbers's avatar
      Port to Coq 8.5 beta 2. · 02f213ce
      Robbert Krebbers authored
      The port makes the following notable changes:
      
      * The carrier types of separation algebras and integer environments are no
        longer in Set. Now they have a type at a fixed type level above Set. This
        both works better in 8.5 and makes the formalization more general.
        I have tried putting them at polymorphic type levels, but that increased the
        compilation time by an order of magnitude.
      * I am using a custom f_equal tactic written in Ltac to circumvent bug #4069.
        That bug has been fixed, so this custom tactic can be removed when the next
        beta of 8.5 is out.
      02f213ce
    • Robbert Krebbers's avatar
      Misc prelude omissions. · 462ea92a
      Robbert Krebbers authored
      462ea92a
    • Robbert Krebbers's avatar
      Indexed map function for finite maps. · d101c562
      Robbert Krebbers authored
      d101c562
  10. 10 Jun, 2015 1 commit
  11. 04 Jun, 2015 2 commits
  12. 02 Jun, 2015 1 commit
  13. 21 May, 2015 1 commit
  14. 22 Apr, 2015 1 commit
  15. 16 Apr, 2015 2 commits
  16. 15 Mar, 2015 1 commit
  17. 02 Mar, 2015 1 commit
  18. 25 Feb, 2015 1 commit
  19. 24 Feb, 2015 1 commit
  20. 16 Feb, 2015 3 commits
  21. 13 Feb, 2015 1 commit
  22. 08 Feb, 2015 4 commits
    • Robbert Krebbers's avatar
      Improve case_option_guard to destruct on decide P in case of mguard P. · 6f504682
      Robbert Krebbers authored
      First it would destruct on the decider, which sometimes would result
      in unfolded hypotheses.
      6f504682
    • Robbert Krebbers's avatar
      Improve name generation in the injection' tactic. · 330702cc
      Robbert Krebbers authored
      The tactic "injection' H" now uses the name "H" for the first hypothesis it
      generates. Fresh names will still be used for the remaining hypotheses.
      330702cc
    • Robbert Krebbers's avatar
      Update copyright headers. · 5a73c4ed
      Robbert Krebbers authored
      5a73c4ed
    • Robbert Krebbers's avatar
      Support function pointers and use a state monad in the frontend. · b2109c25
      Robbert Krebbers authored
      Important changes in the core semantics:
      * Types extended with function types. Since function types are a special kind
        of pointer types, types now have an additional mutual part called "ptr_type".
      * Pointers extended with function pointers. Theses are just names that refer
        to an actual function in the function environment.
      * Typing environments extended to assign argument and return types to function
        names. Before we used a separate environment for these, but since the
        argument and return types are already needed to type function pointers, this
        environment would appear in pretty much every typing judgment.
      
      As a side-effect, the frontend has been rewritten entirely. The important
      changes are:
      
      * Type checking of expressions is more involved: there is a special kind of
        expression type corresponding to a function designator.
      * To handle things like block scoped extern function, more state-fullness was
        needed. To prepare for future extensions, the entire frontend now uses a
        state monad.
      b2109c25
  23. 31 Jan, 2015 1 commit
    • Robbert Krebbers's avatar
      Support alignment. · 8b7ea9be
      Robbert Krebbers authored
      Type environments now describe alignment, this allows to:
      * Prove properties about alignment, for example that bit offsets
        of addresses are always aligned.
      * Support align_of expressions in the frontend.
      8b7ea9be