/* Subroutines for insn-output.c for Windows NT.
Contributed by Douglas Rupp (drupp@cs.washington.edu)
- Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "regs.h"
#include "hard-reg-set.h"
#include "tm_p.h"
#include "toplev.h"
#include "hashtab.h"
+#include "langhooks.h"
+#include "ggc.h"
+#include "target.h"
/* i386/PE specific attribute support.
multiple times.
*/
-static tree associated_type PARAMS ((tree));
-const char * gen_stdcall_suffix PARAMS ((tree));
-int i386_pe_dllexport_p PARAMS ((tree));
-int i386_pe_dllimport_p PARAMS ((tree));
-void i386_pe_mark_dllexport PARAMS ((tree));
-void i386_pe_mark_dllimport PARAMS ((tree));
-
-/* Handle a "dllimport" or "dllexport" attribute;
+/* Handle a "shared" attribute;
arguments as in struct attribute_spec.handler. */
tree
-ix86_handle_dll_attribute (node, name, args, flags, no_add_attrs)
- tree *node;
- tree name;
- tree args;
- int flags;
- bool *no_add_attrs;
+ix86_handle_shared_attribute (tree *node, tree name,
+ tree args ATTRIBUTE_UNUSED,
+ int flags ATTRIBUTE_UNUSED, bool *no_add_attrs)
{
- /* These attributes may apply to structure and union types being created,
- but otherwise should pass to the declaration involved. */
- if (!DECL_P (*node))
+ if (TREE_CODE (*node) != VAR_DECL)
{
- if (flags & ((int) ATTR_FLAG_DECL_NEXT | (int) ATTR_FLAG_FUNCTION_NEXT
- | (int) ATTR_FLAG_ARRAY_NEXT))
- {
- *no_add_attrs = true;
- return tree_cons (name, args, NULL_TREE);
- }
- if (TREE_CODE (*node) != RECORD_TYPE && TREE_CODE (*node) != UNION_TYPE)
- {
- warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
- *no_add_attrs = true;
- }
+ warning (OPT_Wattributes, "%qE attribute only applies to variables",
+ name);
+ *no_add_attrs = true;
}
return NULL_TREE;
}
-/* Handle a "shared" attribute;
+/* Handle a "selectany" attribute;
arguments as in struct attribute_spec.handler. */
tree
-ix86_handle_shared_attribute (node, name, args, flags, no_add_attrs)
- tree *node;
- tree name;
- tree args ATTRIBUTE_UNUSED;
- int flags ATTRIBUTE_UNUSED;
- bool *no_add_attrs;
+ix86_handle_selectany_attribute (tree *node, tree name,
+ tree args ATTRIBUTE_UNUSED,
+ int flags ATTRIBUTE_UNUSED,
+ bool *no_add_attrs)
{
- if (TREE_CODE (*node) != VAR_DECL)
- {
- warning ("`%s' attribute only applies to variables",
- IDENTIFIER_POINTER (name));
+ /* The attribute applies only to objects that are initialized and have
+ external linkage. However, we may not know about initialization
+ until the language frontend has processed the decl. We'll check for
+ initialization later in encode_section_info. */
+ if (TREE_CODE (*node) != VAR_DECL || !TREE_PUBLIC (*node))
+ {
+ error ("%qE attribute applies only to initialized variables"
+ " with external linkage", name);
*no_add_attrs = true;
}
return NULL_TREE;
}
+
\f
/* Return the type that we should use to determine if DECL is
imported or exported. */
static tree
-associated_type (decl)
- tree decl;
+associated_type (tree decl)
{
- tree t = NULL_TREE;
+ return (DECL_CONTEXT (decl) && TYPE_P (DECL_CONTEXT (decl))
+ ? DECL_CONTEXT (decl) : NULL_TREE);
+}
- /* In the C++ frontend, DECL_CONTEXT for a method doesn't actually refer
- to the containing class. So we look at the 'this' arg. */
- if (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
- {
- /* Artificial methods are not affected by the import/export status of
- their class unless they are virtual. */
- if (! DECL_ARTIFICIAL (decl) || DECL_VINDEX (decl))
- t = TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))));
- }
- else if (DECL_CONTEXT (decl)
- && TREE_CODE_CLASS (TREE_CODE (DECL_CONTEXT (decl))) == 't')
- t = DECL_CONTEXT (decl);
+/* Return true if DECL should be a dllexport'd object. */
- return t;
+static bool
+i386_pe_determine_dllexport_p (tree decl)
+{
+ if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != FUNCTION_DECL)
+ return false;
+
+ /* Don't export local clones of dllexports. */
+ if (!TREE_PUBLIC (decl))
+ return false;
+
+ if (lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl)))
+ return true;
+
+ return false;
}
-/* Return non-zero if DECL is a dllexport'd object. */
+/* Return true if DECL should be a dllimport'd object. */
-int
-i386_pe_dllexport_p (decl)
- tree decl;
+static bool
+i386_pe_determine_dllimport_p (tree decl)
{
- tree exp;
+ 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);
- if (TREE_CODE (decl) != VAR_DECL
- && TREE_CODE (decl) != FUNCTION_DECL)
- return 0;
- exp = lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl));
- if (exp)
- return 1;
+ return false;
+}
- /* Class members get the dllexport status of their class. */
- if (associated_type (decl))
- {
- exp = lookup_attribute ("dllexport",
- TYPE_ATTRIBUTES (associated_type (decl)));
- if (exp)
- return 1;
- }
+/* Handle the -mno-fun-dllimport target switch. */
- return 0;
+bool
+i386_pe_valid_dllimport_attribute_p (const_tree decl)
+{
+ if (TARGET_NOP_FUN_DLLIMPORT && TREE_CODE (decl) == FUNCTION_DECL)
+ return false;
+ return true;
}
-/* Return non-zero if DECL is a dllimport'd object. */
+/* Return string which is the function name, identified by ID, modified
+ with a suffix consisting of an atsign (@) followed by the number of
+ bytes of arguments. If ID is NULL use the DECL_NAME as base. If
+ FASTCALL is true, also add the FASTCALL_PREFIX.
+ Return NULL if no change required. */
-int
-i386_pe_dllimport_p (decl)
- tree decl;
+static tree
+gen_stdcall_or_fastcall_suffix (tree decl, tree id, bool fastcall)
{
- tree imp;
+ HOST_WIDE_INT total = 0;
+ const char *old_str = IDENTIFIER_POINTER (id != NULL_TREE ? id : DECL_NAME (decl));
+ char *new_str, *p;
+ tree type = TREE_TYPE (decl);
+ tree arg;
+ function_args_iterator args_iter;
- if (TREE_CODE (decl) == FUNCTION_DECL
- && TARGET_NOP_FUN_DLLIMPORT)
- return 0;
+ gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
- if (TREE_CODE (decl) != VAR_DECL
- && TREE_CODE (decl) != FUNCTION_DECL)
- return 0;
- imp = lookup_attribute ("dllimport", DECL_ATTRIBUTES (decl));
- if (imp)
- return 1;
-
- /* Class members get the dllimport status of their class. */
- if (associated_type (decl))
+ if (prototype_p (type))
{
- imp = lookup_attribute ("dllimport",
- TYPE_ATTRIBUTES (associated_type (decl)));
- if (imp)
- return 1;
- }
+ /* This attribute is ignored for variadic functions. */
+ if (stdarg_p (type))
+ return NULL_TREE;
- return 0;
-}
+ /* Quit if we hit an incomplete type. Error is reported
+ by convert_arguments in c-typeck.c or cp/typeck.c. */
+ FOREACH_FUNCTION_ARGS(type, arg, args_iter)
+ {
+ HOST_WIDE_INT parm_size;
+ HOST_WIDE_INT parm_boundary_bytes = PARM_BOUNDARY / BITS_PER_UNIT;
-/* Return non-zero if SYMBOL is marked as being dllexport'd. */
+ if (! COMPLETE_TYPE_P (arg))
+ break;
-int
-i386_pe_dllexport_name_p (symbol)
- const char *symbol;
-{
- return symbol[0] == '@' && symbol[1] == 'e' && symbol[2] == '.';
-}
+ parm_size = int_size_in_bytes (arg);
+ if (parm_size < 0)
+ break;
-/* Return non-zero if SYMBOL is marked as being dllimport'd. */
+ /* Must round up to include padding. This is done the same
+ way as in store_one_arg. */
+ parm_size = ((parm_size + parm_boundary_bytes - 1)
+ / parm_boundary_bytes * parm_boundary_bytes);
+ total += parm_size;
+ }
+ }
+ /* Assume max of 8 base 10 digits in the suffix. */
+ p = new_str = XALLOCAVEC (char, 1 + strlen (old_str) + 1 + 8 + 1);
+ if (fastcall)
+ *p++ = FASTCALL_PREFIX;
+ sprintf (p, "%s@" HOST_WIDE_INT_PRINT_DEC, old_str, total);
-int
-i386_pe_dllimport_name_p (symbol)
- const char *symbol;
-{
- return symbol[0] == '@' && symbol[1] == 'i' && symbol[2] == '.';
+ return get_identifier (new_str);
}
-/* Mark a DECL as being dllexport'd.
- Note that we override the previous setting (eg: dllimport). */
+/* Maybe decorate and get a new identifier for the DECL of a stdcall or
+ fastcall function. The original identifier is supplied in ID. */
-void
-i386_pe_mark_dllexport (decl)
- tree decl;
+static tree
+i386_pe_maybe_mangle_decl_assembler_name (tree decl, tree id)
{
- const char *oldname;
- char *newname;
- rtx rtlname;
- tree idp;
-
- 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_dllimport_name_p (oldname))
- oldname += 9;
- else if (i386_pe_dllexport_name_p (oldname))
- return; /* already done */
-
- newname = alloca (strlen (oldname) + 4);
- sprintf (newname, "@e.%s", 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);
-
- XEXP (DECL_RTL (decl), 0) =
- gen_rtx (SYMBOL_REF, Pmode, IDENTIFIER_POINTER (idp));
+ tree new_id = NULL_TREE;
+
+ if (TREE_CODE (decl) == FUNCTION_DECL)
+ {
+ tree type_attributes = TYPE_ATTRIBUTES (TREE_TYPE (decl));
+ if (lookup_attribute ("stdcall", type_attributes))
+ new_id = gen_stdcall_or_fastcall_suffix (decl, id, false);
+ else if (lookup_attribute ("fastcall", type_attributes))
+ new_id = gen_stdcall_or_fastcall_suffix (decl, id, true);
+ }
+
+ return new_id;
}
-/* Mark a DECL as being dllimport'd. */
+/* This is used as a target hook to modify the DECL_ASSEMBLER_NAME
+ in the language-independent default hook
+ langhooks,c:lhd_set_decl_assembler_name ()
+ and in cp/mangle,c:mangle_decl (). */
+tree
+i386_pe_mangle_decl_assembler_name (tree decl, tree id)
+{
+ tree new_id = i386_pe_maybe_mangle_decl_assembler_name (decl, id);
+
+ return (new_id ? new_id : id);
+}
void
-i386_pe_mark_dllimport (decl)
- tree decl;
+i386_pe_encode_section_info (tree decl, rtx rtl, int first)
{
- const char *oldname;
- char *newname;
- tree idp;
- rtx rtlname, newrtl;
-
- 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 ("`%s' declared as both exported to and imported from a DLL",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- return;
- }
- else if (i386_pe_dllimport_name_p (oldname))
+ rtx symbol;
+ int flags;
+
+ /* Do this last, due to our frobbing of DECL_DLLIMPORT_P above. */
+ default_encode_section_info (decl, rtl, first);
+
+ /* Careful not to prod global register variables. */
+ if (!MEM_P (rtl))
+ return;
+
+ symbol = XEXP (rtl, 0);
+ gcc_assert (GET_CODE (symbol) == SYMBOL_REF);
+
+ switch (TREE_CODE (decl))
{
- /* Already done, but force correct linkage since the redeclaration
- might have omitted explicit extern. Sigh. */
- if (TREE_CODE (decl) == VAR_DECL
- /* ??? Is this test for vtables needed? */
- && !DECL_VIRTUAL_P (decl))
+ case FUNCTION_DECL:
+ /* FIXME: Imported stdcall names are not modified by the Ada frontend.
+ Check and decorate the RTL name now. */
+ if (strcmp (lang_hooks.name, "GNU Ada") == 0)
{
- DECL_EXTERNAL (decl) = 1;
- TREE_PUBLIC (decl) = 1;
+ tree new_id;
+ tree old_id = DECL_ASSEMBLER_NAME (decl);
+ const char* asm_str = IDENTIFIER_POINTER (old_id);
+ /* Do not change the identifier if a verbatim asmspec
+ or if stdcall suffix already added. */
+ if (!(*asm_str == '*' || strchr (asm_str, '@'))
+ && (new_id = i386_pe_maybe_mangle_decl_assembler_name (decl,
+ old_id)))
+ XSTR (symbol, 0) = IDENTIFIER_POINTER (new_id);
}
- return;
- }
+ break;
- /* ??? One can well ask why we're making these checks here,
- and that would be a good question. */
+ case VAR_DECL:
+ if (lookup_attribute ("selectany", DECL_ATTRIBUTES (decl)))
+ {
+ if (DECL_INITIAL (decl)
+ /* If an object is initialized with a ctor, the static
+ initialization and destruction code for it is present in
+ each unit defining the object. The code that calls the
+ ctor is protected by a link-once guard variable, so that
+ the object still has link-once semantics, */
+ || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))
+ make_decl_one_only (decl, DECL_ASSEMBLER_NAME (decl));
+ else
+ error ("%q+D:'selectany' attribute applies only to "
+ "initialized objects", decl);
+ }
+ break;
- /* Imported variables can't be initialized. Note that C++ classes
- are marked initial, so we need to check. */
- if (TREE_CODE (decl) == VAR_DECL
- && !DECL_VIRTUAL_P (decl)
- && (DECL_INITIAL (decl)
- && ! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))))
- {
- error_with_decl (decl, "initialized variable `%s' is marked dllimport");
+ default:
return;
}
- /* Nor can they be static. */
- if (TREE_CODE (decl) == VAR_DECL
- /* ??? Is this test for vtables needed? */
- && !DECL_VIRTUAL_P (decl)
- && 0 /*???*/)
- {
- error_with_decl (decl, "static variable `%s' is marked dllimport");
- return;
- }
-
- /* `extern' needn't be specified with dllimport.
- Specify `extern' now and hope for the best. Sigh. */
- if (TREE_CODE (decl) == VAR_DECL
- /* ??? Is this test for vtables needed? */
- && !DECL_VIRTUAL_P (decl))
- {
- DECL_EXTERNAL (decl) = 1;
- TREE_PUBLIC (decl) = 1;
- }
-
- newname = alloca (strlen (oldname) + 11);
- sprintf (newname, "@i._imp__%s", 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);
- newrtl = gen_rtx (MEM, Pmode,
- gen_rtx (SYMBOL_REF, Pmode,
- IDENTIFIER_POINTER (idp)));
- XEXP (DECL_RTL (decl), 0) = newrtl;
-
- /* Can't treat a pointer to this as a constant address */
- DECL_NON_ADDR_CONST_P (decl) = 1;
+ /* Mark the decl so we can tell from the rtl whether the object is
+ dllexport'd or dllimport'd. tree.c: merge_dllimport_decl_attributes
+ handles dllexport/dllimport override semantics. */
+ flags = (SYMBOL_REF_FLAGS (symbol) &
+ ~(SYMBOL_FLAG_DLLIMPORT | SYMBOL_FLAG_DLLEXPORT));
+ if (i386_pe_determine_dllexport_p (decl))
+ flags |= SYMBOL_FLAG_DLLEXPORT;
+ else if (i386_pe_determine_dllimport_p (decl))
+ flags |= SYMBOL_FLAG_DLLIMPORT;
+
+ SYMBOL_REF_FLAGS (symbol) = flags;
}
-/* Return string which is the former assembler name modified with a
- suffix consisting of an atsign (@) followed by the number of bytes of
- arguments */
-
-const char *
-gen_stdcall_suffix (decl)
- tree decl;
+bool
+i386_pe_binds_local_p (const_tree exp)
{
- int total = 0;
- /* ??? This probably should use XSTR (XEXP (DECL_RTL (decl), 0), 0) instead
- of DECL_ASSEMBLER_NAME. */
- const char *asmname = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
- char *newsym;
-
- if (TYPE_ARG_TYPES (TREE_TYPE (decl)))
- if (TREE_VALUE (tree_last (TYPE_ARG_TYPES (TREE_TYPE (decl))))
- == void_type_node)
- {
- tree formal_type = TYPE_ARG_TYPES (TREE_TYPE (decl));
-
- while (TREE_VALUE (formal_type) != void_type_node)
- {
- int parm_size
- = TREE_INT_CST_LOW (TYPE_SIZE (TREE_VALUE (formal_type)));
- /* Must round up to include padding. This is done the same
- way as in store_one_arg. */
- parm_size = ((parm_size + PARM_BOUNDARY - 1)
- / PARM_BOUNDARY * PARM_BOUNDARY);
- total += parm_size;
- formal_type = TREE_CHAIN (formal_type);
- }
- }
+ /* PE does not do dynamic binding. Indeed, the only kind of
+ non-local reference comes from a dllimport'd symbol. */
+ if ((TREE_CODE (exp) == VAR_DECL || TREE_CODE (exp) == FUNCTION_DECL)
+ && DECL_DLLIMPORT_P (exp))
+ return false;
- newsym = xmalloc (strlen (asmname) + 10);
- sprintf (newsym, "%s@%d", asmname, total/BITS_PER_UNIT);
- return IDENTIFIER_POINTER (get_identifier (newsym));
+ return true;
}
-/* Cover function to implement ENCODE_SECTION_INFO. */
+/* Also strip the fastcall prefix and stdcall suffix. */
-void
-i386_pe_encode_section_info (decl, first)
- tree decl;
- int first;
+const char *
+i386_pe_strip_name_encoding_full (const char *str)
{
- if (!first)
- return;
-
- /* This bit is copied from i386.h. */
- if (optimize > 0 && TREE_CONSTANT (decl)
- && (!flag_writable_strings || TREE_CODE (decl) != STRING_CST))
- {
- rtx rtl = (TREE_CODE_CLASS (TREE_CODE (decl)) != 'd'
- ? TREE_CST_RTL (decl) : DECL_RTL (decl));
- SYMBOL_REF_FLAG (XEXP (rtl, 0)) = 1;
- }
+ const char *p;
+ const char *name = default_strip_name_encoding (str);
- if (TREE_CODE (decl) == FUNCTION_DECL)
- if (lookup_attribute ("stdcall",
- TYPE_ATTRIBUTES (TREE_TYPE (decl))))
- XEXP (DECL_RTL (decl), 0) =
- gen_rtx (SYMBOL_REF, Pmode, gen_stdcall_suffix (decl));
+ /* Strip leading '@' on fastcall symbols. */
+ if (*name == '@')
+ name++;
- /* Mark the decl so we can tell from the rtl whether the object is
- dllexport'd or dllimport'd. */
-
- if (i386_pe_dllexport_p (decl))
- i386_pe_mark_dllexport (decl);
- else if (i386_pe_dllimport_p (decl))
- i386_pe_mark_dllimport (decl);
- /* It might be that DECL has already been marked as dllimport, but a
- subsequent definition nullified that. The attribute is gone but
- DECL_RTL still has @i._imp__foo. We need to remove that. Ditto
- for the DECL_NON_ADDR_CONST_P flag. */
- else if ((TREE_CODE (decl) == FUNCTION_DECL
- || TREE_CODE (decl) == VAR_DECL)
- && DECL_RTL (decl) != NULL_RTX
- && GET_CODE (DECL_RTL (decl)) == MEM
- && GET_CODE (XEXP (DECL_RTL (decl), 0)) == MEM
- && GET_CODE (XEXP (XEXP (DECL_RTL (decl), 0), 0)) == SYMBOL_REF
- && i386_pe_dllimport_name_p (XSTR (XEXP (XEXP (DECL_RTL (decl), 0), 0), 0)))
- {
- const char *oldname = XSTR (XEXP (XEXP (DECL_RTL (decl), 0), 0), 0);
- tree idp = get_identifier (oldname + 9);
- rtx newrtl = gen_rtx (SYMBOL_REF, Pmode, IDENTIFIER_POINTER (idp));
+ /* Strip trailing "@n". */
+ p = strchr (name, '@');
+ if (p)
+ return ggc_alloc_string (name, p - name);
- XEXP (DECL_RTL (decl), 0) = newrtl;
-
- DECL_NON_ADDR_CONST_P (decl) = 0;
-
- /* We previously set TREE_PUBLIC and DECL_EXTERNAL.
- We leave these alone for now. */
- }
+ return name;
}
void
-i386_pe_unique_section (decl, reloc)
- tree decl;
- int reloc;
+i386_pe_unique_section (tree decl, int reloc)
{
int len;
const char *name, *prefix;
char *string;
name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
- /* Strip off any encoding in fnname. */
- STRIP_NAME_ENCODING (name, name);
+ name = i386_pe_strip_name_encoding_full (name);
/* The object is put in, for example, section .text$foo.
The linker will then ultimately place them in .text
(everything from the $ on is stripped). Don't put
- read-only data in .rdata section to avoid a PE linker
+ read-only data in .rdata section to avoid a PE linker
bug when .rdata$* grouped sections are used in code
without a .rdata section. */
if (TREE_CODE (decl) == FUNCTION_DECL)
prefix = ".text$";
-/* else if (DECL_INITIAL (decl) == 0
- || DECL_INITIAL (decl) == error_mark_node)
- prefix = ".bss"; */
- else if (DECL_READONLY_SECTION (decl, reloc))
-#ifdef READONLY_DATA_SECTION
+ else if (decl_readonly_section (decl, reloc))
prefix = ".rdata$";
-#else
- prefix = ".text$";
-#endif
else
prefix = ".data$";
len = strlen (name) + strlen (prefix);
- string = alloca (len + 1);
+ string = XALLOCAVEC (char, len + 1);
sprintf (string, "%s%s", prefix, name);
DECL_SECTION_NAME (decl) = build_string (len, string);
If the section has already been defined, to not allow it to have
different attributes, as (1) this is ambiguous since we're not seeing
all the declarations up front and (2) some assemblers (e.g. SVR4)
- do not recoginize section redefinitions. */
+ do not recognize section redefinitions. */
/* ??? This differs from the "standard" PE implementation in that we
handle the SHARED variable attribute. Should this be done for all
PE targets? */
#define SECTION_PE_SHARED SECTION_MACH_DEP
unsigned int
-i386_pe_section_type_flags (decl, name, reloc)
- tree decl;
- const char *name;
- int reloc;
+i386_pe_section_type_flags (tree decl, const char *name, int reloc)
{
static htab_t htab;
unsigned int flags;
unsigned int **slot;
/* The names we put in the hashtable will always be the unique
- versions gived to us by the stringtable, so we can just use
+ versions given to us by the stringtable, so we can just use
their addresses as the keys. */
if (!htab)
htab = htab_create (31, htab_hash_pointer, htab_eq_pointer, NULL);
if (decl && TREE_CODE (decl) == FUNCTION_DECL)
flags = SECTION_CODE;
- else if (decl && DECL_READONLY_SECTION (decl, reloc))
+ else if (decl && decl_readonly_section (decl, reloc))
flags = 0;
+ else if (current_function_decl
+ && cfun
+ && crtl->subsections.unlikely_text_section_name
+ && strcmp (name, crtl->subsections.unlikely_text_section_name) == 0)
+ flags = SECTION_CODE;
+ else if (!decl
+ && (!current_function_decl || !cfun)
+ && strcmp (name, UNLIKELY_EXECUTED_TEXT_SECTION_NAME) == 0)
+ flags = SECTION_CODE;
else
{
flags = SECTION_WRITE;
else
{
if (decl && **slot != flags)
- error_with_decl (decl, "%s causes a section type conflict");
+ error ("%q+D causes a section type conflict", decl);
}
return flags;
}
void
-i386_pe_asm_named_section (name, flags)
- const char *name;
- unsigned int flags;
+i386_pe_asm_named_section (const char *name, unsigned int flags,
+ tree decl)
{
char flagchars[8], *f = flagchars;
- if (flags & SECTION_CODE)
- *f++ = 'x';
- if (flags & SECTION_WRITE)
- *f++ = 'w';
- if (flags & SECTION_PE_SHARED)
- *f++ = 's';
+ if ((flags & (SECTION_CODE | SECTION_WRITE)) == 0)
+ /* readonly data */
+ {
+ *f++ ='d'; /* This is necessary for older versions of gas. */
+ *f++ ='r';
+ }
+ else
+ {
+ if (flags & SECTION_CODE)
+ *f++ = 'x';
+ if (flags & SECTION_WRITE)
+ *f++ = 'w';
+ if (flags & SECTION_PE_SHARED)
+ *f++ = 's';
+ }
+
*f = '\0';
fprintf (asm_out_file, "\t.section\t%s,\"%s\"\n", name, flagchars);
if (flags & SECTION_LINKONCE)
{
/* Functions may have been compiled at various levels of
- optimization so we can't use `same_size' here.
- Instead, have the linker pick one. */
+ optimization so we can't use `same_size' here.
+ Instead, have the linker pick one, without warning.
+ If 'selectany' attribute has been specified, MS compiler
+ sets 'discard' characteristic, rather than telling linker
+ to warn of size or content mismatch, so do the same. */
+ bool discard = (flags & SECTION_CODE)
+ || lookup_attribute ("selectany",
+ DECL_ATTRIBUTES (decl));
fprintf (asm_out_file, "\t.linkonce %s\n",
- (flags & SECTION_CODE ? "discard" : "same_size"));
+ (discard ? "discard" : "same_size"));
}
}
+
+void
+i386_pe_asm_output_aligned_decl_common (FILE *stream, tree decl,
+ const char *name, HOST_WIDE_INT size,
+ HOST_WIDE_INT align ATTRIBUTE_UNUSED)
+{
+ HOST_WIDE_INT rounded;
+
+ /* Compute as in assemble_noswitch_variable, since we don't have
+ support for aligned common on older binutils. We must also
+ avoid emitting a common symbol of size zero, as this is the
+ overloaded representation that indicates an undefined external
+ symbol in the PE object file format. */
+ rounded = size ? size : 1;
+ rounded += (BIGGEST_ALIGNMENT / BITS_PER_UNIT) - 1;
+ rounded = (rounded / (BIGGEST_ALIGNMENT / BITS_PER_UNIT)
+ * (BIGGEST_ALIGNMENT / BITS_PER_UNIT));
+
+ i386_pe_maybe_record_exported_symbol (decl, name, 1);
+
+ fprintf (stream, "\t.comm\t");
+ assemble_name (stream, name);
+ if (use_pe_aligned_common)
+ fprintf (stream, ", " HOST_WIDE_INT_PRINT_DEC ", %d\n",
+ size ? size : (HOST_WIDE_INT) 1,
+ exact_log2 (align) - exact_log2 (CHAR_BIT));
+ else
+ fprintf (stream, ", " HOST_WIDE_INT_PRINT_DEC "\t" ASM_COMMENT_START
+ " " HOST_WIDE_INT_PRINT_DEC "\n", rounded, size);
+}
\f
/* The Microsoft linker requires that every function be marked as
DT_FCN. When using gas on cygwin, we must emit appropriate .type
/* Mark a function appropriately. This should only be called for
functions for which we are not emitting COFF debugging information.
FILE is the assembler output file, NAME is the name of the
- function, and PUBLIC is non-zero if the function is globally
+ function, and PUB is nonzero if the function is globally
visible. */
void
-i386_pe_declare_function_type (file, name, public)
- FILE *file;
- const char *name;
- int public;
+i386_pe_declare_function_type (FILE *file, const char *name, int pub)
{
fprintf (file, "\t.def\t");
assemble_name (file, name);
fprintf (file, ";\t.scl\t%d;\t.type\t%d;\t.endef\n",
- public ? (int) C_EXT : (int) C_STAT,
+ pub ? (int) C_EXT : (int) C_STAT,
(int) DT_FCN << N_BTSHFT);
}
/* Keep a list of external functions. */
-struct extern_list
+struct GTY(()) extern_list
{
struct extern_list *next;
+ tree decl;
const char *name;
};
-static struct extern_list *extern_head;
+static GTY(()) struct extern_list *extern_head;
/* Assemble an external function reference. We need to keep a list of
these, so that we can output the function types at the end of the
for it then. */
void
-i386_pe_record_external_function (name)
- const char *name;
+i386_pe_record_external_function (tree decl, const char *name)
{
struct extern_list *p;
- p = (struct extern_list *) permalloc (sizeof *p);
+ p = (struct extern_list *) ggc_alloc (sizeof *p);
p->next = extern_head;
+ p->decl = decl;
p->name = name;
extern_head = p;
}
/* Keep a list of exported symbols. */
-struct export_list
+struct GTY(()) export_list
{
struct export_list *next;
const char *name;
int is_data; /* used to type tag exported symbols. */
};
-static struct export_list *export_head;
+static GTY(()) struct export_list *export_head;
/* Assemble an export symbol entry. We need to keep a list of
these, so that we can output the export list at the end of the
assembly. We used to output these export symbols in each function,
- but that causes problems with GNU ld when the sections are
+ but that causes problems with GNU ld when the sections are
linkonce. */
void
-i386_pe_record_exported_symbol (name, is_data)
- const char *name;
- int is_data;
+i386_pe_maybe_record_exported_symbol (tree decl, const char *name, int is_data)
{
+ rtx symbol;
struct export_list *p;
- p = (struct export_list *) permalloc (sizeof *p);
+ symbol = XEXP (DECL_RTL (decl), 0);
+ gcc_assert (GET_CODE (symbol) == SYMBOL_REF);
+ if (!SYMBOL_REF_DLLEXPORT_P (symbol))
+ return;
+
+ gcc_assert (TREE_PUBLIC (decl));
+
+ p = (struct export_list *) ggc_alloc (sizeof *p);
p->next = export_head;
p->name = name;
p->is_data = is_data;
export_head = p;
}
+#ifdef CXX_WRAP_SPEC_LIST
+
+/* Hash table equality helper function. */
+
+static int
+wrapper_strcmp (const void *x, const void *y)
+{
+ return !strcmp ((const char *) x, (const char *) y);
+}
+
+/* Search for a function named TARGET in the list of library wrappers
+ we are using, returning a pointer to it if found or NULL if not.
+ This function might be called on quite a few symbols, and we only
+ have the list of names of wrapped functions available to us as a
+ spec string, so first time round we lazily initialise a hash table
+ to make things quicker. */
+
+static const char *
+i386_find_on_wrapper_list (const char *target)
+{
+ static char first_time = 1;
+ static htab_t wrappers;
+
+ if (first_time)
+ {
+ /* Beware that this is not a complicated parser, it assumes
+ that any sequence of non-whitespace beginning with an
+ underscore is one of the wrapped symbols. For now that's
+ adequate to distinguish symbols from spec substitutions
+ and command-line options. */
+ static char wrapper_list_buffer[] = CXX_WRAP_SPEC_LIST;
+ char *bufptr;
+ /* Breaks up the char array into separated strings
+ strings and enter them into the hash table. */
+ wrappers = htab_create_alloc (8, htab_hash_string, wrapper_strcmp,
+ 0, xcalloc, free);
+ for (bufptr = wrapper_list_buffer; *bufptr; ++bufptr)
+ {
+ char *found = NULL;
+ if (ISSPACE (*bufptr))
+ continue;
+ if (*bufptr == '_')
+ found = bufptr;
+ while (*bufptr && !ISSPACE (*bufptr))
+ ++bufptr;
+ if (*bufptr)
+ *bufptr = 0;
+ if (found)
+ *htab_find_slot (wrappers, found, INSERT) = found;
+ }
+ first_time = 0;
+ }
+
+ return (const char *) htab_find (wrappers, target);
+}
+
+#endif /* CXX_WRAP_SPEC_LIST */
+
/* This is called at the end of assembly. For each external function
which has not been defined, we output a declaration now. We also
output the .drectve section. */
void
-i386_pe_asm_file_end (file)
- FILE *file;
+i386_pe_file_end (void)
{
struct extern_list *p;
- ix86_asm_file_end (file);
+ ix86_file_end ();
for (p = extern_head; p != NULL; p = p->next)
{
tree decl;
- decl = get_identifier (p->name);
+ decl = p->decl;
/* Positively ensure only one declaration for any given symbol. */
- if (! TREE_ASM_WRITTEN (decl) && TREE_SYMBOL_REFERENCED (decl))
+ if (! TREE_ASM_WRITTEN (decl)
+ && TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
{
+#ifdef CXX_WRAP_SPEC_LIST
+ /* To ensure the DLL that provides the corresponding real
+ functions is still loaded at runtime, we must reference
+ the real function so that an (unused) import is created. */
+ const char *realsym = i386_find_on_wrapper_list (p->name);
+ if (realsym)
+ i386_pe_declare_function_type (asm_out_file,
+ concat ("__real_", realsym, NULL), TREE_PUBLIC (decl));
+#endif /* CXX_WRAP_SPEC_LIST */
TREE_ASM_WRITTEN (decl) = 1;
- i386_pe_declare_function_type (file, p->name, TREE_PUBLIC (decl));
+ i386_pe_declare_function_type (asm_out_file, p->name,
+ TREE_PUBLIC (decl));
}
}
drectve_section ();
for (q = export_head; q != NULL; q = q->next)
{
- fprintf (file, "\t.ascii \" -export:%s%s\"\n",
- I386_PE_STRIP_ENCODING (q->name),
- (q->is_data) ? ",data" : "");
+ fprintf (asm_out_file, "\t.ascii \" -export:%s%s\"\n",
+ default_strip_name_encoding (q->name),
+ (q->is_data ? ",data" : ""));
}
}
}
+#include "gt-winnt.h"
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