Simpler, more robust emulation of calls to variadic functions:

- C function types and Cminor signatures annotated by calling conventions.
  esp. vararg / not vararg
- Cshmgen: generate correct code for function call where there are
  more arguments than listed in the function prototype.  This is
  still undefined behavior according to the formal semantics,
  but correct code is generated.
- C2C, */PrintAsm.ml: remove "printf$iif" hack.
- powerpc/, checklink/: don't generate stubs for variadic functions.


git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2386 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e

1 files changed, 4 insertions, 3 deletions

diff --git a/cfrontend/Csyntax.v b/cfrontend/Csyntax.v
index 8b98556b..ea1bd862 100644
--- a/cfrontend/Csyntax.v
+++ b/cfrontend/Csyntax.v
@@ -177,6 +177,7 @@ with labeled_statements : Type :=            (**r cases of a [switch] *)
 
 Record function : Type := mkfunction {
   fn_return: type;
+  fn_callconv: calling_convention;
   fn_params: list (ident * type);
   fn_vars: list (ident * type);
   fn_body: statement
@@ -190,17 +191,17 @@ Definition var_names (vars: list(ident * type)) : list ident :=
 
 Inductive fundef : Type :=
   | Internal: function -> fundef
-  | External: external_function -> typelist -> type -> fundef.
+  | External: external_function -> typelist -> type -> calling_convention -> fundef.
 
 (** The type of a function definition. *)
 
 Definition type_of_function (f: function) : type :=
-  Tfunction (type_of_params (fn_params f)) (fn_return f).
+  Tfunction (type_of_params (fn_params f)) (fn_return f) (fn_callconv f).
 
 Definition type_of_fundef (f: fundef) : type :=
   match f with
   | Internal fd => type_of_function fd
-  | External id args res => Tfunction args res
+  | External id args res cc => Tfunction args res cc
   end.
 
 (** ** Programs *)