bool
i386_pe_dllimport_p (tree decl)
{
if (TREE_CODE (decl) != VAR_DECL
&& TREE_CODE (decl) != FUNCTION_DECL)
return false;
/* Lookup the attribute in addition to checking the DECL_DLLIMPORT_P flag.
We may need to override an earlier decision. */
if (DECL_DLLIMPORT_P (decl)
&& lookup_attribute ("dllimport", DECL_ATTRIBUTES (decl)))
{
/* Make a final check to see if this is a definition before we generate
RTL for an indirect reference. */
if (!DECL_EXTERNAL (decl))
{
error ("%q+D: definition is marked as dllimport", decl);
DECL_DLLIMPORT_P (decl) = 0;
return false;
}
return true;
}
/* The DECL_DLLIMPORT_P flag was set for decls in the class definition
by targetm.cxx.adjust_class_at_definition. Check again to emit
warnings if the class attribute has been overridden by an
out-of-class definition. */
else if (associated_type (decl)
&& lookup_attribute ("dllimport",
TYPE_ATTRIBUTES (associated_type (decl))))
return i386_pe_type_dllimport_p (decl);
return false;
}
static void
i386_pe_mark_dllimport (tree decl)
{
const char *oldname;
char *newname;
tree idp;
rtx rtlname, newrtl;
rtx symref;
rtlname = XEXP (DECL_RTL (decl), 0);
if (GET_CODE (rtlname) == SYMBOL_REF)
oldname = XSTR (rtlname, 0);
else if (GET_CODE (rtlname) == MEM
&& GET_CODE (XEXP (rtlname, 0)) == SYMBOL_REF)
oldname = XSTR (XEXP (rtlname, 0), 0);
else
abort ();
if (i386_pe_dllexport_name_p (oldname))
{
error ("%qs declared as both exported to and imported from a DLL",
IDENTIFIER_POINTER (DECL_NAME (decl)));
return;
}
else if (i386_pe_dllimport_name_p (oldname))
{
/* Already done, but do a sanity check to prevent assembler errors. */
/* APPLE LOCAL begin mainline 2005-10-12 */
if (!DECL_EXTERNAL (decl) || !TREE_PUBLIC (decl)
|| !DECL_DLLIMPORT_P (decl))
{
error ("%Jfailure in redeclaration of '%D': dllimport'd "
"symbol lacks external linkage.", decl, decl);
abort();
}
/* APPLE LOCAL end mainline 2005-10-12 */
return;
}
newname = alloca (strlen (DLL_IMPORT_PREFIX) + strlen (oldname) + 1);
sprintf (newname, "%s%s", DLL_IMPORT_PREFIX, oldname);
/* We pass newname through get_identifier to ensure it has a unique
address. RTL processing can sometimes peek inside the symbol ref
and compare the string's addresses to see if two symbols are
identical. */
idp = get_identifier (newname);
symref = gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (idp));
SYMBOL_REF_DECL (symref) = decl;
newrtl = gen_rtx_MEM (Pmode,symref);
XEXP (DECL_RTL (decl), 0) = newrtl;
/* APPLE LOCAL begin mainline 2005-10-12 */
DECL_DLLIMPORT_P (decl) = 1;
/* APPLE LOCAL end mainline 2005-10-12 */
}
static void
unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
{
DECL_DEFER_OUTPUT (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp, 2);
DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp, 1);
if (TREE_CODE (expr) == VAR_DECL)
{
DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IN_TEXT_SECTION (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_TLS_MODEL (expr) = (enum tls_model) bp_unpack_value (bp, 3);
}
if (VAR_OR_FUNCTION_DECL_P (expr))
{
priority_type p;
p = (priority_type) bp_unpack_var_len_unsigned (bp);
SET_DECL_INIT_PRIORITY (expr, p);
}
}
static void
pack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
{
bp_pack_value (bp, DECL_COMMON (expr), 1);
bp_pack_value (bp, DECL_DLLIMPORT_P (expr), 1);
bp_pack_value (bp, DECL_WEAK (expr), 1);
bp_pack_value (bp, DECL_SEEN_IN_BIND_EXPR_P (expr), 1);
bp_pack_value (bp, DECL_COMDAT (expr), 1);
bp_pack_value (bp, DECL_VISIBILITY (expr), 2);
bp_pack_value (bp, DECL_VISIBILITY_SPECIFIED (expr), 1);
if (TREE_CODE (expr) == VAR_DECL)
{
bp_pack_value (bp, DECL_HARD_REGISTER (expr), 1);
/* DECL_IN_TEXT_SECTION is set during final asm output only. */
bp_pack_value (bp, DECL_IN_CONSTANT_POOL (expr), 1);
}
if (TREE_CODE (expr) == FUNCTION_DECL)
{
bp_pack_value (bp, DECL_FINAL_P (expr), 1);
bp_pack_value (bp, DECL_CXX_CONSTRUCTOR_P (expr), 1);
bp_pack_value (bp, DECL_CXX_DESTRUCTOR_P (expr), 1);
}
}
static bool
i386_pe_determine_dllimport_p (tree decl)
{
tree assoc;
if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != FUNCTION_DECL)
return false;
if (DECL_DLLIMPORT_P (decl))
return true;
/* The DECL_DLLIMPORT_P flag was set for decls in the class definition
by targetm.cxx.adjust_class_at_definition. Check again to emit
error message if the class attribute has been overridden by an
out-of-class definition of static data. */
assoc = associated_type (decl);
if (assoc && lookup_attribute ("dllimport", TYPE_ATTRIBUTES (assoc))
&& TREE_CODE (decl) == VAR_DECL
&& TREE_STATIC (decl) && TREE_PUBLIC (decl)
&& !DECL_EXTERNAL (decl)
/* vtable's are linkonce constants, so defining a vtable is not
an error as long as we don't try to import it too. */
&& !DECL_VIRTUAL_P (decl))
error ("definition of static data member %q+D of "
"dllimport%'d class", decl);
return false;
}
static inline void maybe_add_dllimport (tree decl)
{
/* BEGIN GCC-XML MODIFICATIONS 2009-04-24 */
/* Somehow dllimport ends up on the VAR_DECL for the 'B' vtable:
class A {};
struct __attribute__((dllimport)) B: virtual public A { ~B() {} };
Then 'maybe_emit_vtables' calls 'store_init_value' which eventually
calls 'initializer_constant_valid_p' and 'staticp'. The
DECL_DLLIMPORT_P mark requires runtime initialization of the
vtable, which is not allowed, and results in an ICE.
There is code in "class.c" which removes the dllimport attribute
but it never seems to be called for the vtable VAR_DECL. We
workaround the problem for gccxml by disabling the mark altogether,
as it seems to be used only for code generation. */
#if 0
if (i386_pe_type_dllimport_p (decl))
DECL_DLLIMPORT_P (decl) = 1;
#else
(void)decl;
#endif
/* END GCC-XML MODIFICATIONS 2009-04-24 */
}
static bool
fixed_address_object_p (tree obj)
{
return (TREE_CODE (obj) == VAR_DECL
&& (TREE_STATIC (obj)
|| DECL_EXTERNAL (obj))
&& ! DECL_DLLIMPORT_P (obj));
}
static void
i386_pe_mark_dllimport (tree decl)
{
const char *oldname;
char *newname;
tree idp;
rtx rtlname, newrtl;
rtx symref;
rtlname = XEXP (DECL_RTL (decl), 0);
if (GET_CODE (rtlname) == MEM)
rtlname = XEXP (rtlname, 0);
gcc_assert (GET_CODE (rtlname) == SYMBOL_REF);
oldname = XSTR (rtlname, 0);
if (i386_pe_dllexport_name_p (oldname))
{
error ("%qs declared as both exported to and imported from a DLL",
IDENTIFIER_POINTER (DECL_NAME (decl)));
return;
}
else if (i386_pe_dllimport_name_p (oldname))
{
/* Already done, but do a sanity check to prevent assembler
errors. */
gcc_assert (DECL_EXTERNAL (decl) && TREE_PUBLIC (decl)
&& DECL_DLLIMPORT_P (decl));
return;
}
newname = alloca (strlen (DLL_IMPORT_PREFIX) + strlen (oldname) + 1);
sprintf (newname, "%s%s", DLL_IMPORT_PREFIX, oldname);
/* We pass newname through get_identifier to ensure it has a unique
address. RTL processing can sometimes peek inside the symbol ref
and compare the string's addresses to see if two symbols are
identical. */
idp = get_identifier (newname);
symref = gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (idp));
SET_SYMBOL_REF_DECL (symref, decl);
newrtl = gen_rtx_MEM (Pmode,symref);
XEXP (DECL_RTL (decl), 0) = newrtl;
DECL_DLLIMPORT_P (decl) = 1;
}
symtab_node *
symtab_nonoverwritable_alias (symtab_node *node)
{
tree new_decl;
symtab_node *new_node = NULL;
/* First try to look up existing alias or base object
(if that is already non-overwritable). */
node = symtab_alias_ultimate_target (node, NULL);
gcc_assert (!node->alias && !node->weakref);
symtab_for_node_and_aliases (node, symtab_nonoverwritable_alias_1,
(void *)&new_node, true);
if (new_node)
return new_node;
#ifndef ASM_OUTPUT_DEF
/* If aliases aren't supported by the assembler, fail. */
return NULL;
#endif
/* Otherwise create a new one. */
new_decl = copy_node (node->decl);
DECL_DLLIMPORT_P (new_decl) = 0;
DECL_NAME (new_decl) = clone_function_name (node->decl, "localalias");
if (TREE_CODE (new_decl) == FUNCTION_DECL)
DECL_STRUCT_FUNCTION (new_decl) = NULL;
DECL_INITIAL (new_decl) = NULL;
SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl));
SET_DECL_RTL (new_decl, NULL);
/* Update the properties. */
DECL_EXTERNAL (new_decl) = 0;
if (DECL_ONE_ONLY (node->decl))
DECL_SECTION_NAME (new_decl) = NULL;
DECL_COMDAT_GROUP (new_decl) = 0;
TREE_PUBLIC (new_decl) = 0;
DECL_COMDAT (new_decl) = 0;
DECL_WEAK (new_decl) = 0;
DECL_VIRTUAL_P (new_decl) = 0;
if (TREE_CODE (new_decl) == FUNCTION_DECL)
{
DECL_STATIC_CONSTRUCTOR (new_decl) = 0;
DECL_STATIC_DESTRUCTOR (new_decl) = 0;
new_node = cgraph_create_function_alias
(new_decl, node->decl);
}
else
new_node = varpool_create_variable_alias (new_decl,
node->decl);
symtab_resolve_alias (new_node, node);
gcc_assert (decl_binds_to_current_def_p (new_decl));
return new_node;
}
void
symtab_make_decl_local (tree decl)
{
rtx rtl, symbol;
/* Avoid clearing DECL_COMDAT_GROUP on comdat-local decls. */
if (TREE_PUBLIC (decl) == 0)
return;
if (TREE_CODE (decl) == VAR_DECL)
DECL_COMMON (decl) = 0;
else gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
if (DECL_ONE_ONLY (decl) || DECL_COMDAT (decl))
{
DECL_SECTION_NAME (decl) = 0;
DECL_COMDAT (decl) = 0;
}
DECL_COMDAT_GROUP (decl) = 0;
DECL_WEAK (decl) = 0;
DECL_EXTERNAL (decl) = 0;
DECL_VISIBILITY_SPECIFIED (decl) = 0;
DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
TREE_PUBLIC (decl) = 0;
DECL_DLLIMPORT_P (decl) = 0;
if (!DECL_RTL_SET_P (decl))
return;
/* Update rtl flags. */
make_decl_rtl (decl);
rtl = DECL_RTL (decl);
if (!MEM_P (rtl))
return;
symbol = XEXP (rtl, 0);
if (GET_CODE (symbol) != SYMBOL_REF)
return;
SYMBOL_REF_WEAK (symbol) = DECL_WEAK (decl);
}
static void
pack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
{
bp_pack_value (bp, DECL_DEFER_OUTPUT (expr), 1);
bp_pack_value (bp, DECL_COMMON (expr), 1);
bp_pack_value (bp, DECL_DLLIMPORT_P (expr), 1);
bp_pack_value (bp, DECL_WEAK (expr), 1);
bp_pack_value (bp, DECL_SEEN_IN_BIND_EXPR_P (expr), 1);
bp_pack_value (bp, DECL_COMDAT (expr), 1);
bp_pack_value (bp, DECL_VISIBILITY (expr), 2);
bp_pack_value (bp, DECL_VISIBILITY_SPECIFIED (expr), 1);
if (TREE_CODE (expr) == VAR_DECL)
{
bp_pack_value (bp, DECL_HARD_REGISTER (expr), 1);
bp_pack_value (bp, DECL_IN_TEXT_SECTION (expr), 1);
bp_pack_value (bp, DECL_IN_CONSTANT_POOL (expr), 1);
bp_pack_value (bp, DECL_TLS_MODEL (expr), 3);
}
if (VAR_OR_FUNCTION_DECL_P (expr))
bp_pack_var_len_unsigned (bp, DECL_INIT_PRIORITY (expr));
}
static void
unpack_ts_decl_with_vis_value_fields (struct bitpack_d *bp, tree expr)
{
DECL_COMMON (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_DLLIMPORT_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_WEAK (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_SEEN_IN_BIND_EXPR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_COMDAT (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_VISIBILITY (expr) = (enum symbol_visibility) bp_unpack_value (bp, 2);
DECL_VISIBILITY_SPECIFIED (expr) = (unsigned) bp_unpack_value (bp, 1);
if (TREE_CODE (expr) == VAR_DECL)
{
DECL_HARD_REGISTER (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_IN_CONSTANT_POOL (expr) = (unsigned) bp_unpack_value (bp, 1);
}
if (TREE_CODE (expr) == FUNCTION_DECL)
{
DECL_FINAL_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_CXX_CONSTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
DECL_CXX_DESTRUCTOR_P (expr) = (unsigned) bp_unpack_value (bp, 1);
}
}
static inline void maybe_add_dllimport (tree decl)
{
if (i386_pe_type_dllimport_p (decl))
DECL_DLLIMPORT_P (decl) = 1;
}
void
dump_symtab_base (FILE *f, symtab_node node)
{
static const char * const visibility_types[] = {
"default", "protected", "hidden", "internal"
};
fprintf (f, "%s/%i (%s)",
symtab_node_asm_name (node),
node->symbol.order,
symtab_node_name (node));
dump_addr (f, " @", (void *)node);
fprintf (f, "\n Type: %s\n", symtab_type_names[node->symbol.type]);
fprintf (f, " Visibility:");
if (node->symbol.in_other_partition)
fprintf (f, " in_other_partition");
if (node->symbol.used_from_other_partition)
fprintf (f, " used_from_other_partition");
if (node->symbol.force_output)
fprintf (f, " force_output");
if (node->symbol.resolution != LDPR_UNKNOWN)
fprintf (f, " %s",
ld_plugin_symbol_resolution_names[(int)node->symbol.resolution]);
if (TREE_ASM_WRITTEN (node->symbol.decl))
fprintf (f, " asm_written");
if (DECL_EXTERNAL (node->symbol.decl))
fprintf (f, " external");
if (TREE_PUBLIC (node->symbol.decl))
fprintf (f, " public");
if (DECL_COMMON (node->symbol.decl))
fprintf (f, " common");
if (DECL_WEAK (node->symbol.decl))
fprintf (f, " weak");
if (DECL_DLLIMPORT_P (node->symbol.decl))
fprintf (f, " dll_import");
if (DECL_COMDAT (node->symbol.decl))
fprintf (f, " comdat");
if (DECL_COMDAT_GROUP (node->symbol.decl))
fprintf (f, " comdat_group:%s",
IDENTIFIER_POINTER (DECL_COMDAT_GROUP (node->symbol.decl)));
if (DECL_ONE_ONLY (node->symbol.decl))
fprintf (f, " one_only");
if (DECL_SECTION_NAME (node->symbol.decl))
fprintf (f, " section_name:%s",
TREE_STRING_POINTER (DECL_SECTION_NAME (node->symbol.decl)));
if (DECL_VISIBILITY_SPECIFIED (node->symbol.decl))
fprintf (f, " visibility_specified");
if (DECL_VISIBILITY (node->symbol.decl))
fprintf (f, " visibility:%s",
visibility_types [DECL_VISIBILITY (node->symbol.decl)]);
if (DECL_VIRTUAL_P (node->symbol.decl))
fprintf (f, " virtual");
if (DECL_ARTIFICIAL (node->symbol.decl))
fprintf (f, " artificial");
if (TREE_CODE (node->symbol.decl) == FUNCTION_DECL)
{
if (DECL_STATIC_CONSTRUCTOR (node->symbol.decl))
fprintf (f, " constructor");
if (DECL_STATIC_DESTRUCTOR (node->symbol.decl))
fprintf (f, " destructor");
}
fprintf (f, "\n");
if (node->symbol.same_comdat_group)
fprintf (f, " Same comdat group as: %s/%i\n",
symtab_node_asm_name (node->symbol.same_comdat_group),
node->symbol.same_comdat_group->symbol.order);
if (node->symbol.next_sharing_asm_name)
fprintf (f, " next sharing asm name: %i\n",
node->symbol.next_sharing_asm_name->symbol.order);
if (node->symbol.previous_sharing_asm_name)
fprintf (f, " previous sharing asm name: %i\n",
node->symbol.previous_sharing_asm_name->symbol.order);
if (node->symbol.address_taken)
fprintf (f, " Address is taken.\n");
if (node->symbol.aux)
{
fprintf (f, " Aux:");
dump_addr (f, " @", (void *)node->symbol.aux);
}
fprintf (f, " References: ");
ipa_dump_references (f, &node->symbol.ref_list);
fprintf (f, " Referring: ");
ipa_dump_referring (f, &node->symbol.ref_list);
}
void
symtab_node::dump_base (FILE *f)
{
static const char * const visibility_types[] = {
"default", "protected", "hidden", "internal"
};
fprintf (f, "%s/%i (%s)", asm_name (), order, name ());
dump_addr (f, " @", (void *)this);
fprintf (f, "\n Type: %s", symtab_type_names[type]);
if (definition)
fprintf (f, " definition");
if (analyzed)
fprintf (f, " analyzed");
if (alias)
fprintf (f, " alias");
if (weakref)
fprintf (f, " weakref");
if (cpp_implicit_alias)
fprintf (f, " cpp_implicit_alias");
if (alias_target)
fprintf (f, " target:%s",
DECL_P (alias_target)
? IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME
(alias_target))
: IDENTIFIER_POINTER (alias_target));
if (body_removed)
fprintf (f, "\n Body removed by symtab_remove_unreachable_nodes");
fprintf (f, "\n Visibility:");
if (in_other_partition)
fprintf (f, " in_other_partition");
if (used_from_other_partition)
fprintf (f, " used_from_other_partition");
if (force_output)
fprintf (f, " force_output");
if (forced_by_abi)
fprintf (f, " forced_by_abi");
if (externally_visible)
fprintf (f, " externally_visible");
if (resolution != LDPR_UNKNOWN)
fprintf (f, " %s",
ld_plugin_symbol_resolution_names[(int)resolution]);
if (TREE_ASM_WRITTEN (decl))
fprintf (f, " asm_written");
if (DECL_EXTERNAL (decl))
fprintf (f, " external");
if (TREE_PUBLIC (decl))
fprintf (f, " public");
if (DECL_COMMON (decl))
fprintf (f, " common");
if (DECL_WEAK (decl))
fprintf (f, " weak");
if (DECL_DLLIMPORT_P (decl))
fprintf (f, " dll_import");
if (DECL_COMDAT (decl))
fprintf (f, " comdat");
if (get_comdat_group ())
fprintf (f, " comdat_group:%s",
IDENTIFIER_POINTER (get_comdat_group_id ()));
if (DECL_ONE_ONLY (decl))
fprintf (f, " one_only");
if (get_section ())
fprintf (f, " section:%s",
get_section ());
if (implicit_section)
fprintf (f," (implicit_section)");
if (DECL_VISIBILITY_SPECIFIED (decl))
fprintf (f, " visibility_specified");
if (DECL_VISIBILITY (decl))
fprintf (f, " visibility:%s",
visibility_types [DECL_VISIBILITY (decl)]);
if (DECL_VIRTUAL_P (decl))
fprintf (f, " virtual");
if (DECL_ARTIFICIAL (decl))
fprintf (f, " artificial");
if (TREE_CODE (decl) == FUNCTION_DECL)
{
if (DECL_STATIC_CONSTRUCTOR (decl))
fprintf (f, " constructor");
if (DECL_STATIC_DESTRUCTOR (decl))
fprintf (f, " destructor");
}
fprintf (f, "\n");
if (same_comdat_group)
fprintf (f, " Same comdat group as: %s/%i\n",
same_comdat_group->asm_name (),
same_comdat_group->order);
if (next_sharing_asm_name)
fprintf (f, " next sharing asm name: %i\n",
next_sharing_asm_name->order);
if (previous_sharing_asm_name)
fprintf (f, " previous sharing asm name: %i\n",
previous_sharing_asm_name->order);
if (address_taken)
fprintf (f, " Address is taken.\n");
if (aux)
{
fprintf (f, " Aux:");
dump_addr (f, " @", (void *)aux);
}
fprintf (f, " References: ");
dump_references (f);
fprintf (f, " Referring: ");
dump_referring (f);
if (lto_file_data)
fprintf (f, " Read from file: %s\n",
lto_file_data->file_name);
}
