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decl.c (Has_Thiscall_Convention): New macro.
* gcc-interface/decl.c (Has_Thiscall_Convention): New macro. (gnat_to_gnu_entity) <E_Subprogram_Type>: Test it to set the thiscall calling convention (get_minimal_subprog_decl): Likewise. (gnat_first_param_is_class): New predicate. * gcc-interface/misc.c (gnat_handle_option): Fix formatting. * gcc-interface/Makefile.in: Likewise. From-SVN: r187676
This commit is contained in:
Eric Botcazou
parent
2a2aa0391e
commit
c80c1ce951
@ -2148,7 +2148,7 @@ ifeq ($(strip $(filter-out darwin%,$(osys))),)
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s-taprop.adb<s-taprop-posix.adb \
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s-taspri.ads<s-taspri-posix.ads \
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s-tpopsp.adb<s-tpopsp-posix-foreign.adb
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ifeq ($(strip $(filter-out %86,$(arch))),)
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LIBGNAT_TARGET_PAIRS += \
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s-intman.adb<s-intman-susv3.adb \
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@ -2195,7 +2195,7 @@ ifeq ($(strip $(filter-out darwin%,$(osys))),)
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s-osprim.adb<s-osprim-posix.adb \
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a-numaux.ads<a-numaux-darwin.ads \
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a-numaux.adb<a-numaux-darwin.adb
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ifeq ($(strip $(MULTISUBDIR)),/ppc64)
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LIBGNAT_TARGET_PAIRS += \
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system.ads<system-darwin-ppc64.ads
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@ -50,19 +50,23 @@
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#include "ada-tree.h"
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#include "gigi.h"
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/* Convention_Stdcall should be processed in a specific way on 32 bits
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Windows targets only. The macro below is a helper to avoid having to
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check for a Windows specific attribute throughout this unit. */
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/* "stdcall" and "thiscall" conventions should be processed in a specific way
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on 32-bit x86/Windows only. The macros below are helpers to avoid having
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to check for a Windows specific attribute throughout this unit. */
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#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
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#ifdef TARGET_64BIT
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#define Has_Stdcall_Convention(E) \
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(!TARGET_64BIT && Convention (E) == Convention_Stdcall)
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#define Has_Thiscall_Convention(E) \
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(!TARGET_64BIT && gnat_first_param_is_class (E))
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#else
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#define Has_Stdcall_Convention(E) (Convention (E) == Convention_Stdcall)
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#define Has_Thiscall_Convention(E) (gnat_first_param_is_class (E))
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#endif
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#else
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#define Has_Stdcall_Convention(E) 0
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#define Has_Thiscall_Convention(E) 0
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#endif
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/* Stack realignment is necessary for functions with foreign conventions when
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@ -126,6 +130,7 @@ DEF_VEC_ALLOC_O(variant_desc,heap);
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static GTY ((if_marked ("tree_int_map_marked_p"),
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param_is (struct tree_int_map))) htab_t annotate_value_cache;
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static bool gnat_first_param_is_class (Entity_Id) ATTRIBUTE_UNUSED;
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static bool allocatable_size_p (tree, bool);
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static void prepend_one_attribute_to (struct attrib **,
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enum attr_type, tree, tree, Node_Id);
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@ -4403,6 +4408,11 @@ gnat_to_gnu_entity (Entity_Id gnat_entity, tree gnu_expr, int definition)
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(&attr_list, ATTR_MACHINE_ATTRIBUTE,
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get_identifier ("stdcall"), NULL_TREE,
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gnat_entity);
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else if (Has_Thiscall_Convention (gnat_entity))
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prepend_one_attribute_to
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(&attr_list, ATTR_MACHINE_ATTRIBUTE,
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get_identifier ("thiscall"), NULL_TREE,
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gnat_entity);
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/* If we should request stack realignment for a foreign convention
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subprogram, do so. Note that this applies to task entry points in
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@ -5266,6 +5276,10 @@ get_minimal_subprog_decl (Entity_Id gnat_entity)
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prepend_one_attribute_to (&attr_list, ATTR_MACHINE_ATTRIBUTE,
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get_identifier ("stdcall"), NULL_TREE,
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gnat_entity);
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else if (Has_Thiscall_Convention (gnat_entity))
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prepend_one_attribute_to (&attr_list, ATTR_MACHINE_ATTRIBUTE,
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get_identifier ("thiscall"), NULL_TREE,
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gnat_entity);
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if (No (Interface_Name (gnat_entity)) && gnu_ext_name == gnu_entity_name)
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gnu_ext_name = NULL_TREE;
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@ -5275,6 +5289,63 @@ get_minimal_subprog_decl (Entity_Id gnat_entity)
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false, true, true, true, attr_list, gnat_entity);
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}
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/* Return whether the E_Subprogram_Type/E_Function/E_Procedure GNAT_ENTITY has
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a first parameter with a class or equivalent type.
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We use the predicate on 32-bit x86/Windows to find out whether we need to
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use the "thiscall" calling convention for GNAT_ENTITY. This convention is
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the one set for C++ methods (functions with METHOD_TYPE) by the back-end.
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Now in Ada primitive operations are regular subprograms (e.g. you can have
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common pointers to both) so we cannot compute an equivalent of METHOD_TYPE
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and so we set the calling convention in an uniform way. */
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static bool
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gnat_first_param_is_class (Entity_Id gnat_entity)
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{
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Entity_Id gnat_param = First_Formal_With_Extras (gnat_entity);
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Entity_Id gnat_type;
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Node_Id node;
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if (No (gnat_param))
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return false;
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gnat_type = Underlying_Type (Etype (gnat_param));
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/* This is the main case. Note that we must return the same value for
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regular tagged types and CW types since dispatching calls have a CW
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type on the caller side and a tagged type on the callee side. */
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if (Is_Tagged_Type (gnat_type))
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return True;
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/* C++ classes with no virtual functions can be imported as limited
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record types, but we need to return true for the constructors. */
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if (Is_CPP_Class (gnat_type))
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return True;
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/* The language-level "protected" calling convention doesn't distinguish
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tagged protected types from non-tagged protected types (e.g. you can
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have common pointers to both) so we must use a single low-level calling
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convention for it. Since tagged protected types can be derived from
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simple limited interfaces, we need to pick the calling convention of
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the latters. */
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if (Is_Protected_Record_Type (gnat_type))
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return True;
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/* If this is the special E_Subprogram_Type built for the declaration of
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an access to protected subprogram type, the first parameter will have
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type Address, but we must return true to be consistent with above. */
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if (Is_Itype (gnat_entity)
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&& Present (node = Associated_Node_For_Itype (gnat_entity))
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&& Nkind (node) == N_Full_Type_Declaration
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&& Ekind (Defining_Identifier (node)) == E_Access_Subprogram_Type
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&& Present (node = Original_Access_Type (Defining_Identifier (node)))
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&& (Ekind (node) == E_Access_Protected_Subprogram_Type
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|| Ekind (node) == E_Anonymous_Access_Protected_Subprogram_Type))
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return True;
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return False;
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}
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/* Finalize the processing of From_With_Type incomplete types. */
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void
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@ -153,10 +153,10 @@ gnat_handle_option (size_t scode, const char *arg ATTRIBUTE_UNUSED, int value,
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gcc_unreachable ();
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}
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Ada_handle_option_auto (&global_options, &global_options_set,
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scode, arg, value,
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gnat_option_lang_mask (), kind,
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loc, handlers, global_dc);
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Ada_handle_option_auto (&global_options, &global_options_set,
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scode, arg, value,
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gnat_option_lang_mask (), kind,
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loc, handlers, global_dc);
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return true;
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}
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