diff options
Diffstat (limited to 'common/AST.v')
| -rw-r--r-- | common/AST.v | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/common/AST.v b/common/AST.v index 7ccbb6cc..9fe32331 100644 --- a/common/AST.v +++ b/common/AST.v @@ -17,7 +17,7 @@ the abstract syntax trees of many of the intermediate languages. *) Require Import String. -Require Import Coqlib Maps Errors Integers Floats. +Require Import Coqlib Maps Errors Integers Floats BinPos. Require Archi. Set Implicit Arguments. @@ -232,6 +232,16 @@ Definition chunk_of_type (ty: typ) := Lemma chunk_of_Tptr: chunk_of_type Tptr = Mptr. Proof. unfold Mptr, Tptr; destruct Archi.ptr64; auto. Qed. +(** Trapping mode: does undefined behavior result in a trap or an undefined value (e.g. for loads) *) +Inductive trapping_mode : Type := TRAP | NOTRAP. + +Definition trapping_mode_eq : forall x y : trapping_mode, + { x=y } + { x <> y}. +Proof. + decide equality. +Defined. + + (** Initialization data for global variables. *) Inductive init_data: Type := @@ -454,6 +464,11 @@ Qed. (** * External functions *) +(* Identifiers for profiling information *) +Parameter profiling_id : Type. +Axiom profiling_id_eq : forall (x y : profiling_id), {x=y} + {x<>y}. +Definition profiling_kind := Z.t. + (** For most languages, the functions composing the program are either internal functions, defined within the language, or external functions, defined outside. External functions include system calls but also @@ -504,10 +519,13 @@ Inductive external_function : Type := used with caution, as it can invalidate the semantic preservation theorem. Generated only if [-finline-asm] is given. *) - | EF_debug (kind: positive) (text: ident) (targs: list typ). + | EF_debug (kind: positive) (text: ident) (targs: list typ) (** Transport debugging information from the front-end to the generated assembly. Takes zero, one or several arguments like [EF_annot]. Unlike [EF_annot], produces no observable event. *) + | EF_profiling (id: profiling_id) (kind : profiling_kind). + (** Count one profiling event for this identifier and kind. + Takes no argument. Produces no observable event. *) (** The type signature of an external function. *) @@ -525,6 +543,7 @@ Definition ef_sig (ef: external_function): signature := | EF_annot_val kind text targ => mksignature (targ :: nil) targ cc_default | EF_inline_asm text sg clob => sg | EF_debug kind text targs => mksignature targs Tvoid cc_default + | EF_profiling id kind => mksignature nil Tvoid cc_default end. (** Whether an external function should be inlined by the compiler. *) @@ -543,6 +562,7 @@ Definition ef_inline (ef: external_function) : bool := | EF_annot_val kind Text rg => true | EF_inline_asm text sg clob => true | EF_debug kind text targs => true + | EF_profiling id kind => true end. (** Whether an external function must reload its arguments. *) @@ -558,7 +578,7 @@ Definition ef_reloads (ef: external_function) : bool := Definition external_function_eq: forall (ef1 ef2: external_function), {ef1=ef2} + {ef1<>ef2}. Proof. - generalize ident_eq string_dec signature_eq chunk_eq typ_eq list_eq_dec zeq Int.eq_dec; intros. + generalize profiling_id_eq ident_eq string_dec signature_eq chunk_eq typ_eq list_eq_dec zeq Int.eq_dec; intros. decide equality. Defined. Global Opaque external_function_eq. @@ -669,11 +689,28 @@ Inductive builtin_arg (A: Type) : Type := | BA_splitlong (hi lo: builtin_arg A) | BA_addptr (a1 a2: builtin_arg A). +Definition builtin_arg_eq {A: Type}: + (forall x y : A, {x = y} + {x <> y}) -> + forall (ba1 ba2: (builtin_arg A)), {ba1=ba2} + {ba1<>ba2}. +Proof. + intro. generalize Integers.int_eq int64_eq float_eq float32_eq chunk_eq ptrofs_eq ident_eq. + decide equality. +Defined. +Global Opaque builtin_arg_eq. + Inductive builtin_res (A: Type) : Type := | BR (x: A) | BR_none | BR_splitlong (hi lo: builtin_res A). +Definition builtin_res_eq {A: Type}: + (forall x y : A, {x = y} + {x <> y}) -> + forall (a b: builtin_res A), {a=b} + {a<>b}. +Proof. + intro. decide equality. +Defined. +Global Opaque builtin_res_eq. + Fixpoint globals_of_builtin_arg (A: Type) (a: builtin_arg A) : list ident := match a with | BA_loadglobal chunk id ofs => id :: nil |