package frama-c

  1. Overview
  2. Docs
Platform dedicated to the analysis of source code written in C

Install 

dune-project
 Dependency

frama-c.com Readme Edit opam file Versions (25)

Authors

  1. M
    Michele Alberti
  2. T
    Thibaud Antignac
  3. G
    Gergö Barany
  4. P
    Patrick Baudin
  5. N
    Nicolas Bellec
  6. T
    Thibaut Benjamin
  7. A
    Allan Blanchard
  8. L
    Lionel Blatter
  9. F
    François Bobot
  10. R
    Richard Bonichon
  11. V
    Vincent Botbol
  12. Q
    Quentin Bouillaguet
  13. D
    David Bühler
  14. Z
    Zakaria Chihani
  15. L
    Loïc Correnson
  16. J
    Julien Crétin
  17. P
    Pascal Cuoq
  18. Z
    Zaynah Dargaye
  19. B
    Basile Desloges
  20. J
    Jean-Christophe Filliâtre
  21. P
    Philippe Herrmann
  22. M
    Maxime Jacquemin
  23. F
    Florent Kirchner
  24. A
    Alexander Kogtenkov
  25. R
    Remi Lazarini
  26. T
    Tristan Le Gall
  27. K
    Kilyan Le Gallic
  28. J
    Jean-Christophe Léchenet
  29. M
    Matthieu Lemerre
  30. D
    Dara Ly
  31. D
    David Maison
  32. C
    Claude Marché
  33. A
    André Maroneze
  34. T
    Thibault Martin
  35. F
    Fonenantsoa Maurica
  36. M
    Melody Méaulle
  37. B
    Benjamin Monate
  38. Y
    Yannick Moy
  39. P
    Pierre Nigron
  40. A
    Anne Pacalet
  41. V
    Valentin Perrelle
  42. G
    Guillaume Petiot
  43. D
    Dario Pinto
  44. V
    Virgile Prevosto
  45. A
    Armand Puccetti
  46. F
    Félix Ridoux
  47. V
    Virgile Robles
  48. J
    Jan Rochel
  49. M
    Muriel Roger
  50. C
    Cécile Ruet-Cros
  51. J
    Julien Signoles
  52. N
    Nicolas Stouls
  53. K
    Kostyantyn Vorobyov
  54. B
    Boris Yakobowski

Maintainers

  1. F
    frama-ci-bot@frama-c.com

Sources

frama-c-30.0-beta-Zinc.tar.gz
sha256=93a291a8764644df2f3618d7ea18258b5fbe0912ec98dfdfd180967afdf24474

doc/frama-c.kernel/Frama_c_kernel/Bit_utils/index.html

Module Frama_c_kernel.Bit_utils

Some bit manipulations.

val sizeofchar : unit -> Integer.t

sizeof(char) in bits

val sizeofpointer : unit -> int

sizeof(char* ) in bits

val sizeof : Cil_types.typ -> Int_Base.t

sizeof ty is the size of ty in bits. This function may return Int_Base.top.

val osizeof : Cil_types.typ -> Int_Base.t

osizeof ty is the size of ty in bytes. This function may return Int_Base.top.

exception Neither_Int_Nor_Enum_Nor_Pointer
val is_signed_int_enum_pointer : Cil_types.typ -> bool

true means that the type is signed.

val signof_typeof_lval : Cil_types.lval -> bool
  • returns

    the sign of type of the lval. true means that the type is signed.

val sizeof_vid : Cil_types.varinfo -> Int_Base.t
  • returns

    the size of the type of the variable in bits.

val sizeof_lval : Cil_types.lval -> Int_Base.t
  • returns

    the size of the type of the left value in bits.

val sizeof_pointed : Cil_types.typ -> Int_Base.t
  • returns

    the size of the type pointed by a pointer or array type in bits. Never call it on a non pointer or non array type .

val osizeof_pointed : Cil_types.typ -> Int_Base.t
  • returns

    the size of the type pointed by a pointer or array type in bytes. Never call it on a non pointer or array type.

val sizeof_pointed_lval : Cil_types.lval -> Int_Base.t
  • returns

    the size of the type pointed by a pointer type of the lval in bits. Never call it on a non pointer type lval.

val max_bit_address : unit -> Integer.t
  • returns

    the maximal possible offset in bits of a memory base.

val max_bit_size : unit -> Integer.t
  • returns

    the maximal possible size in bits of a memory base.

val max_byte_address : unit -> Integer.t
  • returns

    the maximal possible offset in bytes of a memory base.

  • since Aluminium-20160501
val max_byte_size : unit -> Integer.t
  • returns

    the maximal possible size in bytes of a memory base.

  • since Aluminium-20160501

Pretty printing

val pretty_bits : Cil_types.typ -> use_align:bool -> align:Abstract_interp.Rel.t -> rh_size:Integer.t -> start:Integer.t -> stop:Integer.t -> Format.formatter -> bool * Cil_types.typ option

Pretty prints a range of bits in a type for the user. Tries to find field names and array indexes, whenever possible.

Mapping from numeric offsets to symbolic ones.

val type_compatible : Cil_types.typ -> Cil_types.typ -> bool

Comparison of the shape of two types. Attributes are completely ignored.

type offset_match =
  1. | MatchType of Cil_types.typ
    (*

    Offset that has this type (modulo attributes)

    *)
  2. | MatchSize of Integer.t
    (*

    Offset that has a type of this size

    *)
  3. | MatchFirst
    (*

    Return first symbolic offset that matches

    *)

We want to find a symbolic offset that corresponds to a numeric one, with one additional criterion:

exception NoMatchingOffset

find_offset typ ~offset ~size finds a subtype t of typ that describes the type of the bits offset..offset+size-1 in typ. May return a subtype of typ, or a type that is a sub-array of an array type in typ. Also returns a Cil_types.offset off that corresponds to offset. (But we do not have the guarantee that typeof(off) == typ, because of sub-arrays.)