diff options
Diffstat (limited to 'cparser')
| -rw-r--r-- | cparser/Bitfields.ml | 1 | ||||
| -rw-r--r-- | cparser/Cutil.ml | 21 | ||||
| -rw-r--r-- | cparser/Cutil.mli | 2 | ||||
| -rw-r--r-- | cparser/Elab.ml | 28 | ||||
| -rw-r--r-- | cparser/Parse.ml | 13 | ||||
| -rw-r--r-- | cparser/Parse.mli | 2 |
6 files changed, 43 insertions, 24 deletions
diff --git a/cparser/Bitfields.ml b/cparser/Bitfields.ml index 6569bb4c..8d43e689 100644 --- a/cparser/Bitfields.ml +++ b/cparser/Bitfields.ml @@ -134,6 +134,7 @@ let rec transf_members env id count = function if !config.bitfields_msb_first then sizeof_ikind carrier_ikind * 8 - pos - sz else pos in + Debug.set_bitfield_offset id name pos' carrier (sizeof_ikind carrier_ikind); Hashtbl.add bitfield_table (id, name) {bf_carrier = carrier; bf_carrier_typ = carrier_typ; diff --git a/cparser/Cutil.ml b/cparser/Cutil.ml index a3c05c34..90bbfe5a 100644 --- a/cparser/Cutil.ml +++ b/cparser/Cutil.ml @@ -427,7 +427,6 @@ let sizeof_union env members = We lay out fields consecutively, inserting padding to preserve their alignment. Not done here but in composite_info_decl: rounding size to alignment. *) - let sizeof_struct env members = let rec sizeof_rec ofs = function | [] -> @@ -449,6 +448,26 @@ let sizeof_struct env members = end in sizeof_rec 0 members +(* Simplified version to compute offsets on structs without bitfields *) +let struct_layout env members = + let rec struct_layout_rec mem ofs = function + | [] -> + mem + | [ { fld_typ = TArray(_, None, _) } as m ] -> + (* C99: ty[] allowed as last field *) + begin match alignof env m.fld_typ with + | Some a -> ( m.fld_name,align ofs a)::mem + | None -> [] + end + | m :: rem -> + match alignof env m.fld_typ, sizeof env m.fld_typ with + | Some a, Some s -> + let offset = align ofs a in + struct_layout_rec ((m.fld_name,offset)::mem) (offset + s) rem + | _, _ -> [] + in struct_layout_rec [] 0 members + + (* Determine whether a type is incomplete *) let incomplete_type env t = diff --git a/cparser/Cutil.mli b/cparser/Cutil.mli index b1f77944..b9879339 100644 --- a/cparser/Cutil.mli +++ b/cparser/Cutil.mli @@ -105,6 +105,8 @@ val composite_info_decl: Env.t -> struct_or_union -> attributes -> Env.composite_info val composite_info_def: Env.t -> struct_or_union -> attributes -> field list -> Env.composite_info +val struct_layout: + Env.t -> field list -> (string * int) list (* Type classification functions *) diff --git a/cparser/Elab.ml b/cparser/Elab.ml index de24871f..ca5865dd 100644 --- a/cparser/Elab.ml +++ b/cparser/Elab.ml @@ -56,9 +56,11 @@ let elab_loc l = (l.filename, l.lineno) let top_declarations = ref ([] : globdecl list) -let emit_elab loc td = +let emit_elab env loc td = let loc = elab_loc loc in - top_declarations := { gdesc = td; gloc = loc } :: !top_declarations + let dec ={ gdesc = td; gloc = loc } in + Debug.insert_global_declaration env dec; + top_declarations := dec :: !top_declarations let reset() = top_declarations := [] @@ -730,7 +732,7 @@ and elab_struct_or_union only kind loc tag optmembers attrs env = (* finishing the definition of an incomplete struct or union *) let (ci', env') = elab_struct_or_union_info kind loc env members attrs in (* Emit a global definition for it *) - emit_elab loc (Gcompositedef(kind, tag', attrs, ci'.ci_members)); + emit_elab env' loc (Gcompositedef(kind, tag', attrs, ci'.ci_members)); (* Replace infos but keep same ident *) (tag', Env.add_composite env' tag' ci') | Some(tag', {ci_sizeof = Some _}), Some _ @@ -745,7 +747,7 @@ and elab_struct_or_union only kind loc tag optmembers attrs env = (* enter it with a new name *) let (tag', env') = Env.enter_composite env tag ci in (* emit it *) - emit_elab loc (Gcompositedecl(kind, tag', attrs)); + emit_elab env' loc (Gcompositedecl(kind, tag', attrs)); (tag', env') | _, Some members -> (* definition of a complete struct or union *) @@ -753,12 +755,12 @@ and elab_struct_or_union only kind loc tag optmembers attrs env = (* enter it, incomplete, with a new name *) let (tag', env') = Env.enter_composite env tag ci1 in (* emit a declaration so that inner structs and unions can refer to it *) - emit_elab loc (Gcompositedecl(kind, tag', attrs)); + emit_elab env' loc (Gcompositedecl(kind, tag', attrs)); (* elaborate the members *) let (ci2, env'') = elab_struct_or_union_info kind loc env' members attrs in (* emit a definition *) - emit_elab loc (Gcompositedef(kind, tag', attrs, ci2.ci_members)); + emit_elab env'' loc (Gcompositedef(kind, tag', attrs, ci2.ci_members)); (* Replace infos but keep same ident *) (tag', Env.add_composite env'' tag' ci2) @@ -809,7 +811,7 @@ and elab_enum only loc tag optmembers attrs env = let (dcls, env') = elab_members env 0L members in let info = { ei_members = dcls; ei_attr = attrs } in let (tag', env'') = Env.enter_enum env' tag info in - emit_elab loc (Genumdef(tag', attrs, dcls)); + emit_elab env' loc (Genumdef(tag', attrs, dcls)); (tag', env'') (* Elaboration of a naked type, e.g. in a cast *) @@ -1312,7 +1314,7 @@ let elab_expr loc env a = let ty = TFun(TInt(IInt, []), None, false, []) in (* Emit an extern declaration for it *) let id = Env.fresh_ident n in - emit_elab loc (Gdecl(Storage_extern, id, ty, None)); + emit_elab env loc (Gdecl(Storage_extern, id, ty, None)); { edesc = EVar id; etyp = ty } | _ -> elab a1 in let bl = List.map elab al in @@ -1789,7 +1791,7 @@ let enter_typedefs loc env sto dl = if redef Env.lookup_ident env s then error loc "redefinition of identifier '%s' as different kind of symbol" s; let (id, env') = Env.enter_typedef env s ty in - emit_elab loc (Gtypedef(id, ty)); + emit_elab env loc (Gtypedef(id, ty)); env') env dl let enter_or_refine_ident local loc env s sto ty = @@ -1865,7 +1867,7 @@ let enter_decdefs local loc env sto dl = ((sto', id, ty', init') :: decls, env2) else begin (* Global definition *) - emit_elab loc (Gdecl(sto', id, ty', init')); + emit_elab env2 loc (Gdecl(sto', id, ty', init')); (decls, env2) end in let (decls, env') = List.fold_left enter_decdef ([], env) dl in @@ -1899,7 +1901,7 @@ let elab_fundef env spec name body loc = let (func_ty, func_init) = __func__type_and_init s in let (func_id, _, env3,func_ty) = enter_or_refine_ident true loc env2 "__func__" Storage_static func_ty in - emit_elab loc (Gdecl(Storage_static, func_id, func_ty, Some func_init)); + emit_elab env3 loc (Gdecl(Storage_static, func_id, func_ty, Some func_init)); (* Elaborate function body *) let body' = !elab_funbody_f ty_ret env3 body in (* Special treatment of the "main" function *) @@ -1925,7 +1927,7 @@ let elab_fundef env spec name body loc = fd_vararg = vararg; fd_locals = []; fd_body = body'' } in - emit_elab loc (Gfundef fn); + emit_elab env1 loc (Gfundef fn); env1 let elab_kr_fundef env spec name params defs body loc = @@ -1997,7 +1999,7 @@ let rec elab_definition (local: bool) (env: Env.t) (def: Cabs.definition) (* pragma *) | PRAGMA(s, loc) -> - emit_elab loc (Gpragma s); + emit_elab env loc (Gpragma s); ([], env) and elab_definitions local env = function diff --git a/cparser/Parse.ml b/cparser/Parse.ml index c9564c08..2be3a612 100644 --- a/cparser/Parse.ml +++ b/cparser/Parse.ml @@ -24,12 +24,7 @@ let transform_program t p name = (run_pass Unblock.program 'b' (run_pass Bitfields.program 'f' p)))) in - let debug = - if !Clflags.option_g && Configuration.advanced_debug then - Some (CtoDwarf.program_to_dwarf p p1 name) - else - None in - (Rename.program p1 (Filename.chop_suffix name ".c")),debug + (Rename.program p1 (Filename.chop_suffix name ".c")) let parse_transformations s = let t = ref CharSet.empty in @@ -46,7 +41,7 @@ let parse_transformations s = let preprocessed_file transfs name sourcefile = Cerrors.reset(); let ic = open_in sourcefile in - let p,d = + let p = try let t = parse_transformations transfs in let lb = Lexer.init name ic in @@ -65,6 +60,6 @@ let preprocessed_file transfs name sourcefile = Timing.time2 "Emulations" transform_program t p1 name with | Cerrors.Abort -> - [],None in + [] in close_in ic; - if Cerrors.check_errors() then None,None else Some p,d + if Cerrors.check_errors() then None else Some p diff --git a/cparser/Parse.mli b/cparser/Parse.mli index ac8feb70..58c3cfb9 100644 --- a/cparser/Parse.mli +++ b/cparser/Parse.mli @@ -15,7 +15,7 @@ (* Entry point for the library: parse, elaborate, and transform *) -val preprocessed_file: string -> string -> string -> C.program option * DwarfTypes.dw_entry option +val preprocessed_file: string -> string -> string -> C.program option (* first arg: desired transformations second arg: source file name before preprocessing |