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Block objects [1] are a C-level syntactic and runtime feature. They are similar to standard C functions, but in addition to executable code they may also contain variable bindings to automatic (stack) or managed (heap) memory. A block can therefore maintain a set of state (data) that it can use to impact behavior when executed. This port is based on Apple's GCC 5646 with some bugfixes from Apple GCC 5666.3. It has some small differences with the support in clang, which remains the recommended compiler. Perhaps the most notable difference is that in GCC that __block is not actually a keyword, but a macro. There will be workaround for this issue in a near future. Other issues can be consulted in the clang documentation [2] For better compatiblity with Apple's GCC and llvm-gcc some related fixes and features from Apple have been included. Support for the non-standard nested functions in GCC is now off by default. No effort was made to update the ObjC support since FreeBSD doesn't carry ObjC in the base system, but some of the code crept in and was more difficult to remove than to adjust. Reference: [1] https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/Blocks/Articles/00_Introduction.html [2] http://clang.llvm.org/compatibility.html#block-variable-initialization Obtained from: Apple GCC 4.2 MFC after: 3 weeks
2932 lines
83 KiB
C
2932 lines
83 KiB
C
/* Name mangling for the 3.0 C++ ABI.
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Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005
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Free Software Foundation, Inc.
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Written by Alex Samuel <samuel@codesourcery.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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/* This file implements mangling of C++ names according to the IA64
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C++ ABI specification. A mangled name encodes a function or
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variable's name, scope, type, and/or template arguments into a text
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identifier. This identifier is used as the function's or
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variable's linkage name, to preserve compatibility between C++'s
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language features (templates, scoping, and overloading) and C
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linkers.
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Additionally, g++ uses mangled names internally. To support this,
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mangling of types is allowed, even though the mangled name of a
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type should not appear by itself as an exported name. Ditto for
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uninstantiated templates.
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The primary entry point for this module is mangle_decl, which
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returns an identifier containing the mangled name for a decl.
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Additional entry points are provided to build mangled names of
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particular constructs when the appropriate decl for that construct
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is not available. These are:
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mangle_typeinfo_for_type: typeinfo data
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mangle_typeinfo_string_for_type: typeinfo type name
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mangle_vtbl_for_type: virtual table data
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mangle_vtt_for_type: VTT data
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mangle_ctor_vtbl_for_type: `C-in-B' constructor virtual table data
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mangle_thunk: thunk function or entry */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tree.h"
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#include "tm_p.h"
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#include "cp-tree.h"
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#include "real.h"
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#include "obstack.h"
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#include "toplev.h"
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#include "varray.h"
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#include "flags.h"
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#include "target.h"
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/* Debugging support. */
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/* Define DEBUG_MANGLE to enable very verbose trace messages. */
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#ifndef DEBUG_MANGLE
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#define DEBUG_MANGLE 0
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#endif
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/* Macros for tracing the write_* functions. */
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#if DEBUG_MANGLE
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# define MANGLE_TRACE(FN, INPUT) \
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fprintf (stderr, " %-24s: %-24s\n", (FN), (INPUT))
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# define MANGLE_TRACE_TREE(FN, NODE) \
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fprintf (stderr, " %-24s: %-24s (%p)\n", \
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(FN), tree_code_name[TREE_CODE (NODE)], (void *) (NODE))
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#else
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# define MANGLE_TRACE(FN, INPUT)
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# define MANGLE_TRACE_TREE(FN, NODE)
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#endif
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/* Nonzero if NODE is a class template-id. We can't rely on
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CLASSTYPE_USE_TEMPLATE here because of tricky bugs in the parser
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that hard to distinguish A<T> from A, where A<T> is the type as
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instantiated outside of the template, and A is the type used
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without parameters inside the template. */
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#define CLASSTYPE_TEMPLATE_ID_P(NODE) \
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(TYPE_LANG_SPECIFIC (NODE) != NULL \
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&& (TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM \
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|| (CLASSTYPE_TEMPLATE_INFO (NODE) != NULL \
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&& (PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE))))))
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/* Things we only need one of. This module is not reentrant. */
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typedef struct globals GTY(())
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{
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/* An array of the current substitution candidates, in the order
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we've seen them. */
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VEC(tree,gc) *substitutions;
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/* The entity that is being mangled. */
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tree GTY ((skip)) entity;
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/* True if the mangling will be different in a future version of the
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ABI. */
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bool need_abi_warning;
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} globals;
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static GTY (()) globals G;
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/* The obstack on which we build mangled names. */
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static struct obstack *mangle_obstack;
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/* The obstack on which we build mangled names that are not going to
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be IDENTIFIER_NODEs. */
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static struct obstack name_obstack;
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/* The first object on the name_obstack; we use this to free memory
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allocated on the name_obstack. */
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static void *name_base;
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/* An incomplete mangled name. There will be no NUL terminator. If
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there is no incomplete mangled name, this variable is NULL. */
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static char *partially_mangled_name;
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/* The number of characters in the PARTIALLY_MANGLED_NAME. */
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static size_t partially_mangled_name_len;
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/* Indices into subst_identifiers. These are identifiers used in
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special substitution rules. */
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typedef enum
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{
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SUBID_ALLOCATOR,
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SUBID_BASIC_STRING,
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SUBID_CHAR_TRAITS,
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SUBID_BASIC_ISTREAM,
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SUBID_BASIC_OSTREAM,
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SUBID_BASIC_IOSTREAM,
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SUBID_MAX
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}
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substitution_identifier_index_t;
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/* For quick substitution checks, look up these common identifiers
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once only. */
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static GTY(()) tree subst_identifiers[SUBID_MAX];
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/* Single-letter codes for builtin integer types, defined in
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<builtin-type>. These are indexed by integer_type_kind values. */
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static const char
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integer_type_codes[itk_none] =
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{
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'c', /* itk_char */
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'a', /* itk_signed_char */
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'h', /* itk_unsigned_char */
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's', /* itk_short */
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't', /* itk_unsigned_short */
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'i', /* itk_int */
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'j', /* itk_unsigned_int */
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'l', /* itk_long */
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'm', /* itk_unsigned_long */
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'x', /* itk_long_long */
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'y' /* itk_unsigned_long_long */
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};
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static int decl_is_template_id (const tree, tree* const);
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/* Functions for handling substitutions. */
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static inline tree canonicalize_for_substitution (tree);
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static void add_substitution (tree);
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static inline int is_std_substitution (const tree,
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const substitution_identifier_index_t);
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static inline int is_std_substitution_char (const tree,
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const substitution_identifier_index_t);
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static int find_substitution (tree);
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static void mangle_call_offset (const tree, const tree);
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/* Functions for emitting mangled representations of things. */
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static void write_mangled_name (const tree, bool);
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static void write_encoding (const tree);
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static void write_name (tree, const int);
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static void write_unscoped_name (const tree);
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static void write_unscoped_template_name (const tree);
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static void write_nested_name (const tree);
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static void write_prefix (const tree);
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static void write_template_prefix (const tree);
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static void write_unqualified_name (const tree);
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static void write_conversion_operator_name (const tree);
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static void write_source_name (tree);
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static int hwint_to_ascii (unsigned HOST_WIDE_INT, const unsigned int, char *,
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const unsigned int);
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static void write_number (unsigned HOST_WIDE_INT, const int,
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const unsigned int);
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static void write_integer_cst (const tree);
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static void write_real_cst (const tree);
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static void write_identifier (const char *);
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static void write_special_name_constructor (const tree);
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static void write_special_name_destructor (const tree);
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static void write_type (tree);
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static int write_CV_qualifiers_for_type (const tree);
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static void write_builtin_type (tree);
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static void write_function_type (const tree);
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static void write_bare_function_type (const tree, const int, const tree);
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static void write_method_parms (tree, const int, const tree);
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static void write_class_enum_type (const tree);
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static void write_template_args (tree);
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static void write_expression (tree);
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static void write_template_arg_literal (const tree);
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static void write_template_arg (tree);
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static void write_template_template_arg (const tree);
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static void write_array_type (const tree);
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static void write_pointer_to_member_type (const tree);
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static void write_template_param (const tree);
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static void write_template_template_param (const tree);
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static void write_substitution (const int);
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static int discriminator_for_local_entity (tree);
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static int discriminator_for_string_literal (tree, tree);
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static void write_discriminator (const int);
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static void write_local_name (const tree, const tree, const tree);
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static void dump_substitution_candidates (void);
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static const char *mangle_decl_string (const tree);
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/* Control functions. */
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static inline void start_mangling (const tree, bool);
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static inline const char *finish_mangling (const bool);
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static tree mangle_special_for_type (const tree, const char *);
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/* Foreign language functions. */
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static void write_java_integer_type_codes (const tree);
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/* Append a single character to the end of the mangled
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representation. */
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#define write_char(CHAR) \
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obstack_1grow (mangle_obstack, (CHAR))
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/* Append a sized buffer to the end of the mangled representation. */
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#define write_chars(CHAR, LEN) \
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obstack_grow (mangle_obstack, (CHAR), (LEN))
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/* Append a NUL-terminated string to the end of the mangled
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representation. */
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#define write_string(STRING) \
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obstack_grow (mangle_obstack, (STRING), strlen (STRING))
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/* Nonzero if NODE1 and NODE2 are both TREE_LIST nodes and have the
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same purpose (context, which may be a type) and value (template
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decl). See write_template_prefix for more information on what this
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is used for. */
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#define NESTED_TEMPLATE_MATCH(NODE1, NODE2) \
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(TREE_CODE (NODE1) == TREE_LIST \
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&& TREE_CODE (NODE2) == TREE_LIST \
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&& ((TYPE_P (TREE_PURPOSE (NODE1)) \
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&& same_type_p (TREE_PURPOSE (NODE1), TREE_PURPOSE (NODE2))) \
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|| TREE_PURPOSE (NODE1) == TREE_PURPOSE (NODE2)) \
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&& TREE_VALUE (NODE1) == TREE_VALUE (NODE2))
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/* Write out an unsigned quantity in base 10. */
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#define write_unsigned_number(NUMBER) \
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write_number ((NUMBER), /*unsigned_p=*/1, 10)
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/* Save the current (incomplete) mangled name and release the obstack
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storage holding it. This function should be used during mangling
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when making a call that could result in a call to get_identifier,
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as such a call will clobber the same obstack being used for
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mangling. This function may not be called twice without an
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intervening call to restore_partially_mangled_name. */
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static void
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save_partially_mangled_name (void)
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{
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if (mangle_obstack == &ident_hash->stack)
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{
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gcc_assert (!partially_mangled_name);
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partially_mangled_name_len = obstack_object_size (mangle_obstack);
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partially_mangled_name = XNEWVEC (char, partially_mangled_name_len);
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memcpy (partially_mangled_name, obstack_base (mangle_obstack),
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partially_mangled_name_len);
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obstack_free (mangle_obstack, obstack_finish (mangle_obstack));
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}
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}
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/* Restore the incomplete mangled name saved with
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save_partially_mangled_name. */
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static void
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restore_partially_mangled_name (void)
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{
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if (partially_mangled_name)
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{
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obstack_grow (mangle_obstack, partially_mangled_name,
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partially_mangled_name_len);
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free (partially_mangled_name);
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partially_mangled_name = NULL;
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}
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}
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/* If DECL is a template instance, return nonzero and, if
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TEMPLATE_INFO is non-NULL, set *TEMPLATE_INFO to its template info.
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Otherwise return zero. */
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static int
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decl_is_template_id (const tree decl, tree* const template_info)
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{
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if (TREE_CODE (decl) == TYPE_DECL)
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{
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/* TYPE_DECLs are handled specially. Look at its type to decide
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if this is a template instantiation. */
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const tree type = TREE_TYPE (decl);
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if (CLASS_TYPE_P (type) && CLASSTYPE_TEMPLATE_ID_P (type))
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{
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if (template_info != NULL)
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/* For a templated TYPE_DECL, the template info is hanging
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off the type. */
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*template_info = TYPE_TEMPLATE_INFO (type);
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return 1;
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}
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}
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else
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{
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/* Check if this is a primary template. */
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if (DECL_LANG_SPECIFIC (decl) != NULL
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&& DECL_USE_TEMPLATE (decl)
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&& PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (decl))
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&& TREE_CODE (decl) != TEMPLATE_DECL)
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{
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if (template_info != NULL)
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/* For most templated decls, the template info is hanging
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off the decl. */
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*template_info = DECL_TEMPLATE_INFO (decl);
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return 1;
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}
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}
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/* It's not a template id. */
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return 0;
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}
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/* Produce debugging output of current substitution candidates. */
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static void
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dump_substitution_candidates (void)
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{
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unsigned i;
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tree el;
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fprintf (stderr, " ++ substitutions ");
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for (i = 0; VEC_iterate (tree, G.substitutions, i, el); ++i)
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{
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const char *name = "???";
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if (i > 0)
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fprintf (stderr, " ");
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if (DECL_P (el))
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name = IDENTIFIER_POINTER (DECL_NAME (el));
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else if (TREE_CODE (el) == TREE_LIST)
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name = IDENTIFIER_POINTER (DECL_NAME (TREE_VALUE (el)));
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else if (TYPE_NAME (el))
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name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (el)));
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fprintf (stderr, " S%d_ = ", i - 1);
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if (TYPE_P (el) &&
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(CP_TYPE_RESTRICT_P (el)
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|| CP_TYPE_VOLATILE_P (el)
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|| CP_TYPE_CONST_P (el)))
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fprintf (stderr, "CV-");
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fprintf (stderr, "%s (%s at %p)\n",
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name, tree_code_name[TREE_CODE (el)], (void *) el);
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}
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}
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/* Both decls and types can be substitution candidates, but sometimes
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they refer to the same thing. For instance, a TYPE_DECL and
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RECORD_TYPE for the same class refer to the same thing, and should
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||
be treated accordingly in substitutions. This function returns a
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canonicalized tree node representing NODE that is used when adding
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and substitution candidates and finding matches. */
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||
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static inline tree
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||
canonicalize_for_substitution (tree node)
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{
|
||
/* For a TYPE_DECL, use the type instead. */
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if (TREE_CODE (node) == TYPE_DECL)
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||
node = TREE_TYPE (node);
|
||
if (TYPE_P (node))
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||
node = canonical_type_variant (node);
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||
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||
return node;
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||
}
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||
|
||
/* Add NODE as a substitution candidate. NODE must not already be on
|
||
the list of candidates. */
|
||
|
||
static void
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||
add_substitution (tree node)
|
||
{
|
||
tree c;
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||
|
||
if (DEBUG_MANGLE)
|
||
fprintf (stderr, " ++ add_substitution (%s at %10p)\n",
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||
tree_code_name[TREE_CODE (node)], (void *) node);
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||
|
||
/* Get the canonicalized substitution candidate for NODE. */
|
||
c = canonicalize_for_substitution (node);
|
||
if (DEBUG_MANGLE && c != node)
|
||
fprintf (stderr, " ++ using candidate (%s at %10p)\n",
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||
tree_code_name[TREE_CODE (node)], (void *) node);
|
||
node = c;
|
||
|
||
#if ENABLE_CHECKING
|
||
/* Make sure NODE isn't already a candidate. */
|
||
{
|
||
int i;
|
||
tree candidate;
|
||
|
||
for (i = 0; VEC_iterate (tree, G.substitutions, i, candidate); i++)
|
||
{
|
||
gcc_assert (!(DECL_P (node) && node == candidate));
|
||
gcc_assert (!(TYPE_P (node) && TYPE_P (candidate)
|
||
&& same_type_p (node, candidate)));
|
||
}
|
||
}
|
||
#endif /* ENABLE_CHECKING */
|
||
|
||
/* Put the decl onto the varray of substitution candidates. */
|
||
VEC_safe_push (tree, gc, G.substitutions, node);
|
||
|
||
if (DEBUG_MANGLE)
|
||
dump_substitution_candidates ();
|
||
}
|
||
|
||
/* Helper function for find_substitution. Returns nonzero if NODE,
|
||
which may be a decl or a CLASS_TYPE, is a template-id with template
|
||
name of substitution_index[INDEX] in the ::std namespace. */
|
||
|
||
static inline int
|
||
is_std_substitution (const tree node,
|
||
const substitution_identifier_index_t index)
|
||
{
|
||
tree type = NULL;
|
||
tree decl = NULL;
|
||
|
||
if (DECL_P (node))
|
||
{
|
||
type = TREE_TYPE (node);
|
||
decl = node;
|
||
}
|
||
else if (CLASS_TYPE_P (node))
|
||
{
|
||
type = node;
|
||
decl = TYPE_NAME (node);
|
||
}
|
||
else
|
||
/* These are not the droids you're looking for. */
|
||
return 0;
|
||
|
||
return (DECL_NAMESPACE_STD_P (CP_DECL_CONTEXT (decl))
|
||
&& TYPE_LANG_SPECIFIC (type)
|
||
&& TYPE_TEMPLATE_INFO (type)
|
||
&& (DECL_NAME (TYPE_TI_TEMPLATE (type))
|
||
== subst_identifiers[index]));
|
||
}
|
||
|
||
/* Helper function for find_substitution. Returns nonzero if NODE,
|
||
which may be a decl or a CLASS_TYPE, is the template-id
|
||
::std::identifier<char>, where identifier is
|
||
substitution_index[INDEX]. */
|
||
|
||
static inline int
|
||
is_std_substitution_char (const tree node,
|
||
const substitution_identifier_index_t index)
|
||
{
|
||
tree args;
|
||
/* Check NODE's name is ::std::identifier. */
|
||
if (!is_std_substitution (node, index))
|
||
return 0;
|
||
/* Figure out its template args. */
|
||
if (DECL_P (node))
|
||
args = DECL_TI_ARGS (node);
|
||
else if (CLASS_TYPE_P (node))
|
||
args = CLASSTYPE_TI_ARGS (node);
|
||
else
|
||
/* Oops, not a template. */
|
||
return 0;
|
||
/* NODE's template arg list should be <char>. */
|
||
return
|
||
TREE_VEC_LENGTH (args) == 1
|
||
&& TREE_VEC_ELT (args, 0) == char_type_node;
|
||
}
|
||
|
||
/* Check whether a substitution should be used to represent NODE in
|
||
the mangling.
|
||
|
||
First, check standard special-case substitutions.
|
||
|
||
<substitution> ::= St
|
||
# ::std
|
||
|
||
::= Sa
|
||
# ::std::allocator
|
||
|
||
::= Sb
|
||
# ::std::basic_string
|
||
|
||
::= Ss
|
||
# ::std::basic_string<char,
|
||
::std::char_traits<char>,
|
||
::std::allocator<char> >
|
||
|
||
::= Si
|
||
# ::std::basic_istream<char, ::std::char_traits<char> >
|
||
|
||
::= So
|
||
# ::std::basic_ostream<char, ::std::char_traits<char> >
|
||
|
||
::= Sd
|
||
# ::std::basic_iostream<char, ::std::char_traits<char> >
|
||
|
||
Then examine the stack of currently available substitution
|
||
candidates for entities appearing earlier in the same mangling
|
||
|
||
If a substitution is found, write its mangled representation and
|
||
return nonzero. If none is found, just return zero. */
|
||
|
||
static int
|
||
find_substitution (tree node)
|
||
{
|
||
int i;
|
||
const int size = VEC_length (tree, G.substitutions);
|
||
tree decl;
|
||
tree type;
|
||
|
||
if (DEBUG_MANGLE)
|
||
fprintf (stderr, " ++ find_substitution (%s at %p)\n",
|
||
tree_code_name[TREE_CODE (node)], (void *) node);
|
||
|
||
/* Obtain the canonicalized substitution representation for NODE.
|
||
This is what we'll compare against. */
|
||
node = canonicalize_for_substitution (node);
|
||
|
||
/* Check for builtin substitutions. */
|
||
|
||
decl = TYPE_P (node) ? TYPE_NAME (node) : node;
|
||
type = TYPE_P (node) ? node : TREE_TYPE (node);
|
||
|
||
/* Check for std::allocator. */
|
||
if (decl
|
||
&& is_std_substitution (decl, SUBID_ALLOCATOR)
|
||
&& !CLASSTYPE_USE_TEMPLATE (TREE_TYPE (decl)))
|
||
{
|
||
write_string ("Sa");
|
||
return 1;
|
||
}
|
||
|
||
/* Check for std::basic_string. */
|
||
if (decl && is_std_substitution (decl, SUBID_BASIC_STRING))
|
||
{
|
||
if (TYPE_P (node))
|
||
{
|
||
/* If this is a type (i.e. a fully-qualified template-id),
|
||
check for
|
||
std::basic_string <char,
|
||
std::char_traits<char>,
|
||
std::allocator<char> > . */
|
||
if (cp_type_quals (type) == TYPE_UNQUALIFIED
|
||
&& CLASSTYPE_USE_TEMPLATE (type))
|
||
{
|
||
tree args = CLASSTYPE_TI_ARGS (type);
|
||
if (TREE_VEC_LENGTH (args) == 3
|
||
&& same_type_p (TREE_VEC_ELT (args, 0), char_type_node)
|
||
&& is_std_substitution_char (TREE_VEC_ELT (args, 1),
|
||
SUBID_CHAR_TRAITS)
|
||
&& is_std_substitution_char (TREE_VEC_ELT (args, 2),
|
||
SUBID_ALLOCATOR))
|
||
{
|
||
write_string ("Ss");
|
||
return 1;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
/* Substitute for the template name only if this isn't a type. */
|
||
{
|
||
write_string ("Sb");
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
/* Check for basic_{i,o,io}stream. */
|
||
if (TYPE_P (node)
|
||
&& cp_type_quals (type) == TYPE_UNQUALIFIED
|
||
&& CLASS_TYPE_P (type)
|
||
&& CLASSTYPE_USE_TEMPLATE (type)
|
||
&& CLASSTYPE_TEMPLATE_INFO (type) != NULL)
|
||
{
|
||
/* First, check for the template
|
||
args <char, std::char_traits<char> > . */
|
||
tree args = CLASSTYPE_TI_ARGS (type);
|
||
if (TREE_VEC_LENGTH (args) == 2
|
||
&& TYPE_P (TREE_VEC_ELT (args, 0))
|
||
&& same_type_p (TREE_VEC_ELT (args, 0), char_type_node)
|
||
&& is_std_substitution_char (TREE_VEC_ELT (args, 1),
|
||
SUBID_CHAR_TRAITS))
|
||
{
|
||
/* Got them. Is this basic_istream? */
|
||
if (is_std_substitution (decl, SUBID_BASIC_ISTREAM))
|
||
{
|
||
write_string ("Si");
|
||
return 1;
|
||
}
|
||
/* Or basic_ostream? */
|
||
else if (is_std_substitution (decl, SUBID_BASIC_OSTREAM))
|
||
{
|
||
write_string ("So");
|
||
return 1;
|
||
}
|
||
/* Or basic_iostream? */
|
||
else if (is_std_substitution (decl, SUBID_BASIC_IOSTREAM))
|
||
{
|
||
write_string ("Sd");
|
||
return 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Check for namespace std. */
|
||
if (decl && DECL_NAMESPACE_STD_P (decl))
|
||
{
|
||
write_string ("St");
|
||
return 1;
|
||
}
|
||
|
||
/* Now check the list of available substitutions for this mangling
|
||
operation. */
|
||
for (i = 0; i < size; ++i)
|
||
{
|
||
tree candidate = VEC_index (tree, G.substitutions, i);
|
||
/* NODE is a matched to a candidate if it's the same decl node or
|
||
if it's the same type. */
|
||
if (decl == candidate
|
||
|| (TYPE_P (candidate) && type && TYPE_P (type)
|
||
&& same_type_p (type, candidate))
|
||
|| NESTED_TEMPLATE_MATCH (node, candidate))
|
||
{
|
||
write_substitution (i);
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
/* No substitution found. */
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* TOP_LEVEL is true, if this is being called at outermost level of
|
||
mangling. It should be false when mangling a decl appearing in an
|
||
expression within some other mangling.
|
||
|
||
<mangled-name> ::= _Z <encoding> */
|
||
|
||
static void
|
||
write_mangled_name (const tree decl, bool top_level)
|
||
{
|
||
MANGLE_TRACE_TREE ("mangled-name", decl);
|
||
|
||
if (/* The names of `extern "C"' functions are not mangled. */
|
||
DECL_EXTERN_C_FUNCTION_P (decl)
|
||
/* But overloaded operator names *are* mangled. */
|
||
&& !DECL_OVERLOADED_OPERATOR_P (decl))
|
||
{
|
||
unmangled_name:;
|
||
|
||
if (top_level)
|
||
write_string (IDENTIFIER_POINTER (DECL_NAME (decl)));
|
||
else
|
||
{
|
||
/* The standard notes: "The <encoding> of an extern "C"
|
||
function is treated like global-scope data, i.e. as its
|
||
<source-name> without a type." We cannot write
|
||
overloaded operators that way though, because it contains
|
||
characters invalid in assembler. */
|
||
if (abi_version_at_least (2))
|
||
write_string ("_Z");
|
||
else
|
||
G.need_abi_warning = true;
|
||
write_source_name (DECL_NAME (decl));
|
||
}
|
||
}
|
||
else if (TREE_CODE (decl) == VAR_DECL
|
||
/* The names of non-static global variables aren't mangled. */
|
||
&& DECL_EXTERNAL_LINKAGE_P (decl)
|
||
&& (CP_DECL_CONTEXT (decl) == global_namespace
|
||
/* And neither are `extern "C"' variables. */
|
||
|| DECL_EXTERN_C_P (decl)))
|
||
{
|
||
if (top_level || abi_version_at_least (2))
|
||
goto unmangled_name;
|
||
else
|
||
{
|
||
G.need_abi_warning = true;
|
||
goto mangled_name;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
mangled_name:;
|
||
write_string ("_Z");
|
||
write_encoding (decl);
|
||
if (DECL_LANG_SPECIFIC (decl)
|
||
&& (DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (decl)
|
||
|| DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (decl)))
|
||
/* We need a distinct mangled name for these entities, but
|
||
we should never actually output it. So, we append some
|
||
characters the assembler won't like. */
|
||
write_string (" *INTERNAL* ");
|
||
}
|
||
}
|
||
|
||
/* <encoding> ::= <function name> <bare-function-type>
|
||
::= <data name> */
|
||
|
||
static void
|
||
write_encoding (const tree decl)
|
||
{
|
||
MANGLE_TRACE_TREE ("encoding", decl);
|
||
|
||
if (DECL_LANG_SPECIFIC (decl) && DECL_EXTERN_C_FUNCTION_P (decl))
|
||
{
|
||
/* For overloaded operators write just the mangled name
|
||
without arguments. */
|
||
if (DECL_OVERLOADED_OPERATOR_P (decl))
|
||
write_name (decl, /*ignore_local_scope=*/0);
|
||
else
|
||
write_source_name (DECL_NAME (decl));
|
||
return;
|
||
}
|
||
|
||
write_name (decl, /*ignore_local_scope=*/0);
|
||
if (TREE_CODE (decl) == FUNCTION_DECL)
|
||
{
|
||
tree fn_type;
|
||
tree d;
|
||
|
||
if (decl_is_template_id (decl, NULL))
|
||
{
|
||
save_partially_mangled_name ();
|
||
fn_type = get_mostly_instantiated_function_type (decl);
|
||
restore_partially_mangled_name ();
|
||
/* FN_TYPE will not have parameter types for in-charge or
|
||
VTT parameters. Therefore, we pass NULL_TREE to
|
||
write_bare_function_type -- otherwise, it will get
|
||
confused about which artificial parameters to skip. */
|
||
d = NULL_TREE;
|
||
}
|
||
else
|
||
{
|
||
fn_type = TREE_TYPE (decl);
|
||
d = decl;
|
||
}
|
||
|
||
write_bare_function_type (fn_type,
|
||
(!DECL_CONSTRUCTOR_P (decl)
|
||
&& !DECL_DESTRUCTOR_P (decl)
|
||
&& !DECL_CONV_FN_P (decl)
|
||
&& decl_is_template_id (decl, NULL)),
|
||
d);
|
||
}
|
||
}
|
||
|
||
/* <name> ::= <unscoped-name>
|
||
::= <unscoped-template-name> <template-args>
|
||
::= <nested-name>
|
||
::= <local-name>
|
||
|
||
If IGNORE_LOCAL_SCOPE is nonzero, this production of <name> is
|
||
called from <local-name>, which mangles the enclosing scope
|
||
elsewhere and then uses this function to mangle just the part
|
||
underneath the function scope. So don't use the <local-name>
|
||
production, to avoid an infinite recursion. */
|
||
|
||
static void
|
||
write_name (tree decl, const int ignore_local_scope)
|
||
{
|
||
tree context;
|
||
|
||
MANGLE_TRACE_TREE ("name", decl);
|
||
|
||
if (TREE_CODE (decl) == TYPE_DECL)
|
||
{
|
||
/* In case this is a typedef, fish out the corresponding
|
||
TYPE_DECL for the main variant. */
|
||
decl = TYPE_NAME (TYPE_MAIN_VARIANT (TREE_TYPE (decl)));
|
||
context = TYPE_CONTEXT (TYPE_MAIN_VARIANT (TREE_TYPE (decl)));
|
||
}
|
||
else
|
||
context = (DECL_CONTEXT (decl) == NULL) ? NULL : CP_DECL_CONTEXT (decl);
|
||
|
||
/* A decl in :: or ::std scope is treated specially. The former is
|
||
mangled using <unscoped-name> or <unscoped-template-name>, the
|
||
latter with a special substitution. Also, a name that is
|
||
directly in a local function scope is also mangled with
|
||
<unscoped-name> rather than a full <nested-name>. */
|
||
if (context == NULL
|
||
|| context == global_namespace
|
||
|| DECL_NAMESPACE_STD_P (context)
|
||
|| (ignore_local_scope && TREE_CODE (context) == FUNCTION_DECL))
|
||
{
|
||
tree template_info;
|
||
/* Is this a template instance? */
|
||
if (decl_is_template_id (decl, &template_info))
|
||
{
|
||
/* Yes: use <unscoped-template-name>. */
|
||
write_unscoped_template_name (TI_TEMPLATE (template_info));
|
||
write_template_args (TI_ARGS (template_info));
|
||
}
|
||
else
|
||
/* Everything else gets an <unqualified-name>. */
|
||
write_unscoped_name (decl);
|
||
}
|
||
else
|
||
{
|
||
/* Handle local names, unless we asked not to (that is, invoked
|
||
under <local-name>, to handle only the part of the name under
|
||
the local scope). */
|
||
if (!ignore_local_scope)
|
||
{
|
||
/* Scan up the list of scope context, looking for a
|
||
function. If we find one, this entity is in local
|
||
function scope. local_entity tracks context one scope
|
||
level down, so it will contain the element that's
|
||
directly in that function's scope, either decl or one of
|
||
its enclosing scopes. */
|
||
tree local_entity = decl;
|
||
while (context != NULL && context != global_namespace)
|
||
{
|
||
/* Make sure we're always dealing with decls. */
|
||
if (context != NULL && TYPE_P (context))
|
||
context = TYPE_NAME (context);
|
||
/* Is this a function? */
|
||
if (TREE_CODE (context) == FUNCTION_DECL)
|
||
{
|
||
/* Yes, we have local scope. Use the <local-name>
|
||
production for the innermost function scope. */
|
||
write_local_name (context, local_entity, decl);
|
||
return;
|
||
}
|
||
/* Up one scope level. */
|
||
local_entity = context;
|
||
context = CP_DECL_CONTEXT (context);
|
||
}
|
||
|
||
/* No local scope found? Fall through to <nested-name>. */
|
||
}
|
||
|
||
/* Other decls get a <nested-name> to encode their scope. */
|
||
write_nested_name (decl);
|
||
}
|
||
}
|
||
|
||
/* <unscoped-name> ::= <unqualified-name>
|
||
::= St <unqualified-name> # ::std:: */
|
||
|
||
static void
|
||
write_unscoped_name (const tree decl)
|
||
{
|
||
tree context = CP_DECL_CONTEXT (decl);
|
||
|
||
MANGLE_TRACE_TREE ("unscoped-name", decl);
|
||
|
||
/* Is DECL in ::std? */
|
||
if (DECL_NAMESPACE_STD_P (context))
|
||
{
|
||
write_string ("St");
|
||
write_unqualified_name (decl);
|
||
}
|
||
else
|
||
{
|
||
/* If not, it should be either in the global namespace, or directly
|
||
in a local function scope. */
|
||
gcc_assert (context == global_namespace
|
||
|| context == NULL
|
||
|| TREE_CODE (context) == FUNCTION_DECL);
|
||
|
||
write_unqualified_name (decl);
|
||
}
|
||
}
|
||
|
||
/* <unscoped-template-name> ::= <unscoped-name>
|
||
::= <substitution> */
|
||
|
||
static void
|
||
write_unscoped_template_name (const tree decl)
|
||
{
|
||
MANGLE_TRACE_TREE ("unscoped-template-name", decl);
|
||
|
||
if (find_substitution (decl))
|
||
return;
|
||
write_unscoped_name (decl);
|
||
add_substitution (decl);
|
||
}
|
||
|
||
/* Write the nested name, including CV-qualifiers, of DECL.
|
||
|
||
<nested-name> ::= N [<CV-qualifiers>] <prefix> <unqualified-name> E
|
||
::= N [<CV-qualifiers>] <template-prefix> <template-args> E
|
||
|
||
<CV-qualifiers> ::= [r] [V] [K] */
|
||
|
||
static void
|
||
write_nested_name (const tree decl)
|
||
{
|
||
tree template_info;
|
||
|
||
MANGLE_TRACE_TREE ("nested-name", decl);
|
||
|
||
write_char ('N');
|
||
|
||
/* Write CV-qualifiers, if this is a member function. */
|
||
if (TREE_CODE (decl) == FUNCTION_DECL
|
||
&& DECL_NONSTATIC_MEMBER_FUNCTION_P (decl))
|
||
{
|
||
if (DECL_VOLATILE_MEMFUNC_P (decl))
|
||
write_char ('V');
|
||
if (DECL_CONST_MEMFUNC_P (decl))
|
||
write_char ('K');
|
||
}
|
||
|
||
/* Is this a template instance? */
|
||
if (decl_is_template_id (decl, &template_info))
|
||
{
|
||
/* Yes, use <template-prefix>. */
|
||
write_template_prefix (decl);
|
||
write_template_args (TI_ARGS (template_info));
|
||
}
|
||
else
|
||
{
|
||
/* No, just use <prefix> */
|
||
write_prefix (DECL_CONTEXT (decl));
|
||
write_unqualified_name (decl);
|
||
}
|
||
write_char ('E');
|
||
}
|
||
|
||
/* <prefix> ::= <prefix> <unqualified-name>
|
||
::= <template-param>
|
||
::= <template-prefix> <template-args>
|
||
::= # empty
|
||
::= <substitution> */
|
||
|
||
static void
|
||
write_prefix (const tree node)
|
||
{
|
||
tree decl;
|
||
/* Non-NULL if NODE represents a template-id. */
|
||
tree template_info = NULL;
|
||
|
||
MANGLE_TRACE_TREE ("prefix", node);
|
||
|
||
if (node == NULL
|
||
|| node == global_namespace)
|
||
return;
|
||
|
||
if (find_substitution (node))
|
||
return;
|
||
|
||
if (DECL_P (node))
|
||
{
|
||
/* If this is a function decl, that means we've hit function
|
||
scope, so this prefix must be for a local name. In this
|
||
case, we're under the <local-name> production, which encodes
|
||
the enclosing function scope elsewhere. So don't continue
|
||
here. */
|
||
if (TREE_CODE (node) == FUNCTION_DECL)
|
||
return;
|
||
|
||
decl = node;
|
||
decl_is_template_id (decl, &template_info);
|
||
}
|
||
else
|
||
{
|
||
/* Node is a type. */
|
||
decl = TYPE_NAME (node);
|
||
if (CLASSTYPE_TEMPLATE_ID_P (node))
|
||
template_info = TYPE_TEMPLATE_INFO (node);
|
||
}
|
||
|
||
/* In G++ 3.2, the name of the template parameter was used. */
|
||
if (TREE_CODE (node) == TEMPLATE_TYPE_PARM
|
||
&& !abi_version_at_least (2))
|
||
G.need_abi_warning = true;
|
||
|
||
if (TREE_CODE (node) == TEMPLATE_TYPE_PARM
|
||
&& abi_version_at_least (2))
|
||
write_template_param (node);
|
||
else if (template_info != NULL)
|
||
/* Templated. */
|
||
{
|
||
write_template_prefix (decl);
|
||
write_template_args (TI_ARGS (template_info));
|
||
}
|
||
else
|
||
/* Not templated. */
|
||
{
|
||
write_prefix (CP_DECL_CONTEXT (decl));
|
||
write_unqualified_name (decl);
|
||
}
|
||
|
||
add_substitution (node);
|
||
}
|
||
|
||
/* <template-prefix> ::= <prefix> <template component>
|
||
::= <template-param>
|
||
::= <substitution> */
|
||
|
||
static void
|
||
write_template_prefix (const tree node)
|
||
{
|
||
tree decl = DECL_P (node) ? node : TYPE_NAME (node);
|
||
tree type = DECL_P (node) ? TREE_TYPE (node) : node;
|
||
tree context = CP_DECL_CONTEXT (decl);
|
||
tree template_info;
|
||
tree template;
|
||
tree substitution;
|
||
|
||
MANGLE_TRACE_TREE ("template-prefix", node);
|
||
|
||
/* Find the template decl. */
|
||
if (decl_is_template_id (decl, &template_info))
|
||
template = TI_TEMPLATE (template_info);
|
||
else
|
||
{
|
||
gcc_assert (CLASSTYPE_TEMPLATE_ID_P (type));
|
||
|
||
template = TYPE_TI_TEMPLATE (type);
|
||
}
|
||
|
||
/* For a member template, though, the template name for the
|
||
innermost name must have all the outer template levels
|
||
instantiated. For instance, consider
|
||
|
||
template<typename T> struct Outer {
|
||
template<typename U> struct Inner {};
|
||
};
|
||
|
||
The template name for `Inner' in `Outer<int>::Inner<float>' is
|
||
`Outer<int>::Inner<U>'. In g++, we don't instantiate the template
|
||
levels separately, so there's no TEMPLATE_DECL available for this
|
||
(there's only `Outer<T>::Inner<U>').
|
||
|
||
In order to get the substitutions right, we create a special
|
||
TREE_LIST to represent the substitution candidate for a nested
|
||
template. The TREE_PURPOSE is the template's context, fully
|
||
instantiated, and the TREE_VALUE is the TEMPLATE_DECL for the inner
|
||
template.
|
||
|
||
So, for the example above, `Outer<int>::Inner' is represented as a
|
||
substitution candidate by a TREE_LIST whose purpose is `Outer<int>'
|
||
and whose value is `Outer<T>::Inner<U>'. */
|
||
if (TYPE_P (context))
|
||
substitution = build_tree_list (context, template);
|
||
else
|
||
substitution = template;
|
||
|
||
if (find_substitution (substitution))
|
||
return;
|
||
|
||
/* In G++ 3.2, the name of the template template parameter was used. */
|
||
if (TREE_CODE (TREE_TYPE (template)) == TEMPLATE_TEMPLATE_PARM
|
||
&& !abi_version_at_least (2))
|
||
G.need_abi_warning = true;
|
||
|
||
if (TREE_CODE (TREE_TYPE (template)) == TEMPLATE_TEMPLATE_PARM
|
||
&& abi_version_at_least (2))
|
||
write_template_param (TREE_TYPE (template));
|
||
else
|
||
{
|
||
write_prefix (context);
|
||
write_unqualified_name (decl);
|
||
}
|
||
|
||
add_substitution (substitution);
|
||
}
|
||
|
||
/* We don't need to handle thunks, vtables, or VTTs here. Those are
|
||
mangled through special entry points.
|
||
|
||
<unqualified-name> ::= <operator-name>
|
||
::= <special-name>
|
||
::= <source-name>
|
||
::= <local-source-name>
|
||
|
||
<local-source-name> ::= L <source-name> <discriminator> */
|
||
|
||
static void
|
||
write_unqualified_name (const tree decl)
|
||
{
|
||
MANGLE_TRACE_TREE ("unqualified-name", decl);
|
||
|
||
if (DECL_LANG_SPECIFIC (decl) != NULL && DECL_CONSTRUCTOR_P (decl))
|
||
write_special_name_constructor (decl);
|
||
else if (DECL_LANG_SPECIFIC (decl) != NULL && DECL_DESTRUCTOR_P (decl))
|
||
write_special_name_destructor (decl);
|
||
else if (DECL_NAME (decl) == NULL_TREE)
|
||
write_source_name (DECL_ASSEMBLER_NAME (decl));
|
||
else if (DECL_CONV_FN_P (decl))
|
||
{
|
||
/* Conversion operator. Handle it right here.
|
||
<operator> ::= cv <type> */
|
||
tree type;
|
||
if (decl_is_template_id (decl, NULL))
|
||
{
|
||
tree fn_type;
|
||
save_partially_mangled_name ();
|
||
fn_type = get_mostly_instantiated_function_type (decl);
|
||
restore_partially_mangled_name ();
|
||
type = TREE_TYPE (fn_type);
|
||
}
|
||
else
|
||
type = DECL_CONV_FN_TYPE (decl);
|
||
write_conversion_operator_name (type);
|
||
}
|
||
else if (DECL_OVERLOADED_OPERATOR_P (decl))
|
||
{
|
||
operator_name_info_t *oni;
|
||
if (DECL_ASSIGNMENT_OPERATOR_P (decl))
|
||
oni = assignment_operator_name_info;
|
||
else
|
||
oni = operator_name_info;
|
||
|
||
write_string (oni[DECL_OVERLOADED_OPERATOR_P (decl)].mangled_name);
|
||
}
|
||
else if (VAR_OR_FUNCTION_DECL_P (decl) && ! TREE_PUBLIC (decl)
|
||
&& DECL_NAMESPACE_SCOPE_P (decl)
|
||
&& decl_linkage (decl) == lk_internal)
|
||
{
|
||
MANGLE_TRACE_TREE ("local-source-name", decl);
|
||
write_char ('L');
|
||
write_source_name (DECL_NAME (decl));
|
||
/* The default discriminator is 1, and that's all we ever use,
|
||
so there's no code to output one here. */
|
||
}
|
||
else
|
||
write_source_name (DECL_NAME (decl));
|
||
}
|
||
|
||
/* Write the unqualified-name for a conversion operator to TYPE. */
|
||
|
||
static void
|
||
write_conversion_operator_name (const tree type)
|
||
{
|
||
write_string ("cv");
|
||
write_type (type);
|
||
}
|
||
|
||
/* Non-terminal <source-name>. IDENTIFIER is an IDENTIFIER_NODE.
|
||
|
||
<source-name> ::= </length/ number> <identifier> */
|
||
|
||
static void
|
||
write_source_name (tree identifier)
|
||
{
|
||
MANGLE_TRACE_TREE ("source-name", identifier);
|
||
|
||
/* Never write the whole template-id name including the template
|
||
arguments; we only want the template name. */
|
||
if (IDENTIFIER_TEMPLATE (identifier))
|
||
identifier = IDENTIFIER_TEMPLATE (identifier);
|
||
|
||
write_unsigned_number (IDENTIFIER_LENGTH (identifier));
|
||
write_identifier (IDENTIFIER_POINTER (identifier));
|
||
}
|
||
|
||
/* Convert NUMBER to ascii using base BASE and generating at least
|
||
MIN_DIGITS characters. BUFFER points to the _end_ of the buffer
|
||
into which to store the characters. Returns the number of
|
||
characters generated (these will be layed out in advance of where
|
||
BUFFER points). */
|
||
|
||
static int
|
||
hwint_to_ascii (unsigned HOST_WIDE_INT number, const unsigned int base,
|
||
char *buffer, const unsigned int min_digits)
|
||
{
|
||
static const char base_digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
|
||
unsigned digits = 0;
|
||
|
||
while (number)
|
||
{
|
||
unsigned HOST_WIDE_INT d = number / base;
|
||
|
||
*--buffer = base_digits[number - d * base];
|
||
digits++;
|
||
number = d;
|
||
}
|
||
while (digits < min_digits)
|
||
{
|
||
*--buffer = base_digits[0];
|
||
digits++;
|
||
}
|
||
return digits;
|
||
}
|
||
|
||
/* Non-terminal <number>.
|
||
|
||
<number> ::= [n] </decimal integer/> */
|
||
|
||
static void
|
||
write_number (unsigned HOST_WIDE_INT number, const int unsigned_p,
|
||
const unsigned int base)
|
||
{
|
||
char buffer[sizeof (HOST_WIDE_INT) * 8];
|
||
unsigned count = 0;
|
||
|
||
if (!unsigned_p && (HOST_WIDE_INT) number < 0)
|
||
{
|
||
write_char ('n');
|
||
number = -((HOST_WIDE_INT) number);
|
||
}
|
||
count = hwint_to_ascii (number, base, buffer + sizeof (buffer), 1);
|
||
write_chars (buffer + sizeof (buffer) - count, count);
|
||
}
|
||
|
||
/* Write out an integral CST in decimal. Most numbers are small, and
|
||
representable in a HOST_WIDE_INT. Occasionally we'll have numbers
|
||
bigger than that, which we must deal with. */
|
||
|
||
static inline void
|
||
write_integer_cst (const tree cst)
|
||
{
|
||
int sign = tree_int_cst_sgn (cst);
|
||
|
||
if (TREE_INT_CST_HIGH (cst) + (sign < 0))
|
||
{
|
||
/* A bignum. We do this in chunks, each of which fits in a
|
||
HOST_WIDE_INT. */
|
||
char buffer[sizeof (HOST_WIDE_INT) * 8 * 2];
|
||
unsigned HOST_WIDE_INT chunk;
|
||
unsigned chunk_digits;
|
||
char *ptr = buffer + sizeof (buffer);
|
||
unsigned count = 0;
|
||
tree n, base, type;
|
||
int done;
|
||
|
||
/* HOST_WIDE_INT must be at least 32 bits, so 10^9 is
|
||
representable. */
|
||
chunk = 1000000000;
|
||
chunk_digits = 9;
|
||
|
||
if (sizeof (HOST_WIDE_INT) >= 8)
|
||
{
|
||
/* It is at least 64 bits, so 10^18 is representable. */
|
||
chunk_digits = 18;
|
||
chunk *= chunk;
|
||
}
|
||
|
||
type = c_common_signed_or_unsigned_type (1, TREE_TYPE (cst));
|
||
base = build_int_cstu (type, chunk);
|
||
n = build_int_cst_wide (type,
|
||
TREE_INT_CST_LOW (cst), TREE_INT_CST_HIGH (cst));
|
||
|
||
if (sign < 0)
|
||
{
|
||
write_char ('n');
|
||
n = fold_build1 (NEGATE_EXPR, type, n);
|
||
}
|
||
do
|
||
{
|
||
tree d = fold_build2 (FLOOR_DIV_EXPR, type, n, base);
|
||
tree tmp = fold_build2 (MULT_EXPR, type, d, base);
|
||
unsigned c;
|
||
|
||
done = integer_zerop (d);
|
||
tmp = fold_build2 (MINUS_EXPR, type, n, tmp);
|
||
c = hwint_to_ascii (TREE_INT_CST_LOW (tmp), 10, ptr,
|
||
done ? 1 : chunk_digits);
|
||
ptr -= c;
|
||
count += c;
|
||
n = d;
|
||
}
|
||
while (!done);
|
||
write_chars (ptr, count);
|
||
}
|
||
else
|
||
{
|
||
/* A small num. */
|
||
unsigned HOST_WIDE_INT low = TREE_INT_CST_LOW (cst);
|
||
|
||
if (sign < 0)
|
||
{
|
||
write_char ('n');
|
||
low = -low;
|
||
}
|
||
write_unsigned_number (low);
|
||
}
|
||
}
|
||
|
||
/* Write out a floating-point literal.
|
||
|
||
"Floating-point literals are encoded using the bit pattern of the
|
||
target processor's internal representation of that number, as a
|
||
fixed-length lowercase hexadecimal string, high-order bytes first
|
||
(even if the target processor would store low-order bytes first).
|
||
The "n" prefix is not used for floating-point literals; the sign
|
||
bit is encoded with the rest of the number.
|
||
|
||
Here are some examples, assuming the IEEE standard representation
|
||
for floating point numbers. (Spaces are for readability, not
|
||
part of the encoding.)
|
||
|
||
1.0f Lf 3f80 0000 E
|
||
-1.0f Lf bf80 0000 E
|
||
1.17549435e-38f Lf 0080 0000 E
|
||
1.40129846e-45f Lf 0000 0001 E
|
||
0.0f Lf 0000 0000 E"
|
||
|
||
Caller is responsible for the Lx and the E. */
|
||
static void
|
||
write_real_cst (const tree value)
|
||
{
|
||
if (abi_version_at_least (2))
|
||
{
|
||
long target_real[4]; /* largest supported float */
|
||
char buffer[9]; /* eight hex digits in a 32-bit number */
|
||
int i, limit, dir;
|
||
|
||
tree type = TREE_TYPE (value);
|
||
int words = GET_MODE_BITSIZE (TYPE_MODE (type)) / 32;
|
||
|
||
real_to_target (target_real, &TREE_REAL_CST (value),
|
||
TYPE_MODE (type));
|
||
|
||
/* The value in target_real is in the target word order,
|
||
so we must write it out backward if that happens to be
|
||
little-endian. write_number cannot be used, it will
|
||
produce uppercase. */
|
||
if (FLOAT_WORDS_BIG_ENDIAN)
|
||
i = 0, limit = words, dir = 1;
|
||
else
|
||
i = words - 1, limit = -1, dir = -1;
|
||
|
||
for (; i != limit; i += dir)
|
||
{
|
||
sprintf (buffer, "%08lx", (unsigned long) target_real[i]);
|
||
write_chars (buffer, 8);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* In G++ 3.3 and before the REAL_VALUE_TYPE was written out
|
||
literally. Note that compatibility with 3.2 is impossible,
|
||
because the old floating-point emulator used a different
|
||
format for REAL_VALUE_TYPE. */
|
||
size_t i;
|
||
for (i = 0; i < sizeof (TREE_REAL_CST (value)); ++i)
|
||
write_number (((unsigned char *) &TREE_REAL_CST (value))[i],
|
||
/*unsigned_p*/ 1,
|
||
/*base*/ 16);
|
||
G.need_abi_warning = 1;
|
||
}
|
||
}
|
||
|
||
/* Non-terminal <identifier>.
|
||
|
||
<identifier> ::= </unqualified source code identifier> */
|
||
|
||
static void
|
||
write_identifier (const char *identifier)
|
||
{
|
||
MANGLE_TRACE ("identifier", identifier);
|
||
write_string (identifier);
|
||
}
|
||
|
||
/* Handle constructor productions of non-terminal <special-name>.
|
||
CTOR is a constructor FUNCTION_DECL.
|
||
|
||
<special-name> ::= C1 # complete object constructor
|
||
::= C2 # base object constructor
|
||
::= C3 # complete object allocating constructor
|
||
|
||
Currently, allocating constructors are never used.
|
||
|
||
We also need to provide mangled names for the maybe-in-charge
|
||
constructor, so we treat it here too. mangle_decl_string will
|
||
append *INTERNAL* to that, to make sure we never emit it. */
|
||
|
||
static void
|
||
write_special_name_constructor (const tree ctor)
|
||
{
|
||
if (DECL_BASE_CONSTRUCTOR_P (ctor))
|
||
write_string ("C2");
|
||
else
|
||
{
|
||
gcc_assert (DECL_COMPLETE_CONSTRUCTOR_P (ctor)
|
||
/* Even though we don't ever emit a definition of
|
||
the old-style destructor, we still have to
|
||
consider entities (like static variables) nested
|
||
inside it. */
|
||
|| DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (ctor));
|
||
write_string ("C1");
|
||
}
|
||
}
|
||
|
||
/* Handle destructor productions of non-terminal <special-name>.
|
||
DTOR is a destructor FUNCTION_DECL.
|
||
|
||
<special-name> ::= D0 # deleting (in-charge) destructor
|
||
::= D1 # complete object (in-charge) destructor
|
||
::= D2 # base object (not-in-charge) destructor
|
||
|
||
We also need to provide mangled names for the maybe-incharge
|
||
destructor, so we treat it here too. mangle_decl_string will
|
||
append *INTERNAL* to that, to make sure we never emit it. */
|
||
|
||
static void
|
||
write_special_name_destructor (const tree dtor)
|
||
{
|
||
if (DECL_DELETING_DESTRUCTOR_P (dtor))
|
||
write_string ("D0");
|
||
else if (DECL_BASE_DESTRUCTOR_P (dtor))
|
||
write_string ("D2");
|
||
else
|
||
{
|
||
gcc_assert (DECL_COMPLETE_DESTRUCTOR_P (dtor)
|
||
/* Even though we don't ever emit a definition of
|
||
the old-style destructor, we still have to
|
||
consider entities (like static variables) nested
|
||
inside it. */
|
||
|| DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (dtor));
|
||
write_string ("D1");
|
||
}
|
||
}
|
||
|
||
/* Return the discriminator for ENTITY appearing inside
|
||
FUNCTION. The discriminator is the lexical ordinal of VAR among
|
||
entities with the same name in the same FUNCTION. */
|
||
|
||
static int
|
||
discriminator_for_local_entity (tree entity)
|
||
{
|
||
/* Assume this is the only local entity with this name. */
|
||
int discriminator = 0;
|
||
|
||
if (DECL_DISCRIMINATOR_P (entity) && DECL_LANG_SPECIFIC (entity))
|
||
discriminator = DECL_DISCRIMINATOR (entity);
|
||
else if (TREE_CODE (entity) == TYPE_DECL)
|
||
{
|
||
int ix;
|
||
|
||
/* Scan the list of local classes. */
|
||
entity = TREE_TYPE (entity);
|
||
for (ix = 0; ; ix++)
|
||
{
|
||
tree type = VEC_index (tree, local_classes, ix);
|
||
if (type == entity)
|
||
break;
|
||
if (TYPE_IDENTIFIER (type) == TYPE_IDENTIFIER (entity)
|
||
&& TYPE_CONTEXT (type) == TYPE_CONTEXT (entity))
|
||
++discriminator;
|
||
}
|
||
}
|
||
|
||
return discriminator;
|
||
}
|
||
|
||
/* Return the discriminator for STRING, a string literal used inside
|
||
FUNCTION. The discriminator is the lexical ordinal of STRING among
|
||
string literals used in FUNCTION. */
|
||
|
||
static int
|
||
discriminator_for_string_literal (tree function ATTRIBUTE_UNUSED,
|
||
tree string ATTRIBUTE_UNUSED)
|
||
{
|
||
/* For now, we don't discriminate amongst string literals. */
|
||
return 0;
|
||
}
|
||
|
||
/* <discriminator> := _ <number>
|
||
|
||
The discriminator is used only for the second and later occurrences
|
||
of the same name within a single function. In this case <number> is
|
||
n - 2, if this is the nth occurrence, in lexical order. */
|
||
|
||
static void
|
||
write_discriminator (const int discriminator)
|
||
{
|
||
/* If discriminator is zero, don't write anything. Otherwise... */
|
||
if (discriminator > 0)
|
||
{
|
||
write_char ('_');
|
||
write_unsigned_number (discriminator - 1);
|
||
}
|
||
}
|
||
|
||
/* Mangle the name of a function-scope entity. FUNCTION is the
|
||
FUNCTION_DECL for the enclosing function. ENTITY is the decl for
|
||
the entity itself. LOCAL_ENTITY is the entity that's directly
|
||
scoped in FUNCTION_DECL, either ENTITY itself or an enclosing scope
|
||
of ENTITY.
|
||
|
||
<local-name> := Z <function encoding> E <entity name> [<discriminator>]
|
||
:= Z <function encoding> E s [<discriminator>] */
|
||
|
||
static void
|
||
write_local_name (const tree function, const tree local_entity,
|
||
const tree entity)
|
||
{
|
||
MANGLE_TRACE_TREE ("local-name", entity);
|
||
|
||
write_char ('Z');
|
||
write_encoding (function);
|
||
write_char ('E');
|
||
if (TREE_CODE (entity) == STRING_CST)
|
||
{
|
||
write_char ('s');
|
||
write_discriminator (discriminator_for_string_literal (function,
|
||
entity));
|
||
}
|
||
else
|
||
{
|
||
/* Now the <entity name>. Let write_name know its being called
|
||
from <local-name>, so it doesn't try to process the enclosing
|
||
function scope again. */
|
||
write_name (entity, /*ignore_local_scope=*/1);
|
||
write_discriminator (discriminator_for_local_entity (local_entity));
|
||
}
|
||
}
|
||
|
||
/* Non-terminals <type> and <CV-qualifier>.
|
||
|
||
<type> ::= <builtin-type>
|
||
::= <function-type>
|
||
::= <class-enum-type>
|
||
::= <array-type>
|
||
::= <pointer-to-member-type>
|
||
::= <template-param>
|
||
::= <substitution>
|
||
::= <CV-qualifier>
|
||
::= P <type> # pointer-to
|
||
::= R <type> # reference-to
|
||
::= C <type> # complex pair (C 2000)
|
||
::= G <type> # imaginary (C 2000) [not supported]
|
||
::= U <source-name> <type> # vendor extended type qualifier
|
||
|
||
TYPE is a type node. */
|
||
|
||
static void
|
||
write_type (tree type)
|
||
{
|
||
/* This gets set to nonzero if TYPE turns out to be a (possibly
|
||
CV-qualified) builtin type. */
|
||
int is_builtin_type = 0;
|
||
|
||
MANGLE_TRACE_TREE ("type", type);
|
||
|
||
if (type == error_mark_node)
|
||
return;
|
||
|
||
if (find_substitution (type))
|
||
return;
|
||
|
||
if (write_CV_qualifiers_for_type (type) > 0)
|
||
/* If TYPE was CV-qualified, we just wrote the qualifiers; now
|
||
mangle the unqualified type. The recursive call is needed here
|
||
since both the qualified and unqualified types are substitution
|
||
candidates. */
|
||
write_type (TYPE_MAIN_VARIANT (type));
|
||
else if (TREE_CODE (type) == ARRAY_TYPE)
|
||
/* It is important not to use the TYPE_MAIN_VARIANT of TYPE here
|
||
so that the cv-qualification of the element type is available
|
||
in write_array_type. */
|
||
write_array_type (type);
|
||
else
|
||
{
|
||
/* See through any typedefs. */
|
||
type = TYPE_MAIN_VARIANT (type);
|
||
|
||
if (TYPE_PTRMEM_P (type))
|
||
write_pointer_to_member_type (type);
|
||
else switch (TREE_CODE (type))
|
||
{
|
||
case VOID_TYPE:
|
||
case BOOLEAN_TYPE:
|
||
case INTEGER_TYPE: /* Includes wchar_t. */
|
||
case REAL_TYPE:
|
||
{
|
||
/* Handle any target-specific fundamental types. */
|
||
const char *target_mangling
|
||
= targetm.mangle_fundamental_type (type);
|
||
|
||
if (target_mangling)
|
||
{
|
||
write_string (target_mangling);
|
||
return;
|
||
}
|
||
|
||
/* If this is a typedef, TYPE may not be one of
|
||
the standard builtin type nodes, but an alias of one. Use
|
||
TYPE_MAIN_VARIANT to get to the underlying builtin type. */
|
||
write_builtin_type (TYPE_MAIN_VARIANT (type));
|
||
++is_builtin_type;
|
||
break;
|
||
}
|
||
|
||
case COMPLEX_TYPE:
|
||
write_char ('C');
|
||
write_type (TREE_TYPE (type));
|
||
break;
|
||
|
||
case FUNCTION_TYPE:
|
||
case METHOD_TYPE:
|
||
write_function_type (type);
|
||
break;
|
||
|
||
case UNION_TYPE:
|
||
case RECORD_TYPE:
|
||
case ENUMERAL_TYPE:
|
||
/* A pointer-to-member function is represented as a special
|
||
RECORD_TYPE, so check for this first. */
|
||
if (TYPE_PTRMEMFUNC_P (type))
|
||
write_pointer_to_member_type (type);
|
||
else
|
||
write_class_enum_type (type);
|
||
break;
|
||
|
||
case TYPENAME_TYPE:
|
||
case UNBOUND_CLASS_TEMPLATE:
|
||
/* We handle TYPENAME_TYPEs and UNBOUND_CLASS_TEMPLATEs like
|
||
ordinary nested names. */
|
||
write_nested_name (TYPE_STUB_DECL (type));
|
||
break;
|
||
|
||
case POINTER_TYPE:
|
||
write_char ('P');
|
||
write_type (TREE_TYPE (type));
|
||
break;
|
||
|
||
/* APPLE LOCAL begin blocks 6040305 */
|
||
case BLOCK_POINTER_TYPE:
|
||
write_string ("U13block_pointer");
|
||
write_type (TREE_TYPE (type));
|
||
break;
|
||
/* APPLE LOCAL end blocks 6040305 */
|
||
|
||
case REFERENCE_TYPE:
|
||
write_char ('R');
|
||
write_type (TREE_TYPE (type));
|
||
break;
|
||
|
||
case TEMPLATE_TYPE_PARM:
|
||
case TEMPLATE_PARM_INDEX:
|
||
write_template_param (type);
|
||
break;
|
||
|
||
case TEMPLATE_TEMPLATE_PARM:
|
||
write_template_template_param (type);
|
||
break;
|
||
|
||
case BOUND_TEMPLATE_TEMPLATE_PARM:
|
||
write_template_template_param (type);
|
||
write_template_args
|
||
(TI_ARGS (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (type)));
|
||
break;
|
||
|
||
case VECTOR_TYPE:
|
||
write_string ("U8__vector");
|
||
write_type (TREE_TYPE (type));
|
||
break;
|
||
|
||
default:
|
||
gcc_unreachable ();
|
||
}
|
||
}
|
||
|
||
/* Types other than builtin types are substitution candidates. */
|
||
if (!is_builtin_type)
|
||
add_substitution (type);
|
||
}
|
||
|
||
/* Non-terminal <CV-qualifiers> for type nodes. Returns the number of
|
||
CV-qualifiers written for TYPE.
|
||
|
||
<CV-qualifiers> ::= [r] [V] [K] */
|
||
|
||
static int
|
||
write_CV_qualifiers_for_type (const tree type)
|
||
{
|
||
int num_qualifiers = 0;
|
||
|
||
/* The order is specified by:
|
||
|
||
"In cases where multiple order-insensitive qualifiers are
|
||
present, they should be ordered 'K' (closest to the base type),
|
||
'V', 'r', and 'U' (farthest from the base type) ..."
|
||
|
||
Note that we do not use cp_type_quals below; given "const
|
||
int[3]", the "const" is emitted with the "int", not with the
|
||
array. */
|
||
|
||
if (TYPE_QUALS (type) & TYPE_QUAL_RESTRICT)
|
||
{
|
||
write_char ('r');
|
||
++num_qualifiers;
|
||
}
|
||
if (TYPE_QUALS (type) & TYPE_QUAL_VOLATILE)
|
||
{
|
||
write_char ('V');
|
||
++num_qualifiers;
|
||
}
|
||
if (TYPE_QUALS (type) & TYPE_QUAL_CONST)
|
||
{
|
||
write_char ('K');
|
||
++num_qualifiers;
|
||
}
|
||
|
||
return num_qualifiers;
|
||
}
|
||
|
||
/* Non-terminal <builtin-type>.
|
||
|
||
<builtin-type> ::= v # void
|
||
::= b # bool
|
||
::= w # wchar_t
|
||
::= c # char
|
||
::= a # signed char
|
||
::= h # unsigned char
|
||
::= s # short
|
||
::= t # unsigned short
|
||
::= i # int
|
||
::= j # unsigned int
|
||
::= l # long
|
||
::= m # unsigned long
|
||
::= x # long long, __int64
|
||
::= y # unsigned long long, __int64
|
||
::= n # __int128
|
||
::= o # unsigned __int128
|
||
::= f # float
|
||
::= d # double
|
||
::= e # long double, __float80
|
||
::= g # __float128 [not supported]
|
||
::= u <source-name> # vendor extended type */
|
||
|
||
static void
|
||
write_builtin_type (tree type)
|
||
{
|
||
switch (TREE_CODE (type))
|
||
{
|
||
case VOID_TYPE:
|
||
write_char ('v');
|
||
break;
|
||
|
||
case BOOLEAN_TYPE:
|
||
write_char ('b');
|
||
break;
|
||
|
||
case INTEGER_TYPE:
|
||
/* If this is size_t, get the underlying int type. */
|
||
if (TYPE_IS_SIZETYPE (type))
|
||
type = TYPE_DOMAIN (type);
|
||
|
||
/* TYPE may still be wchar_t, since that isn't in
|
||
integer_type_nodes. */
|
||
if (type == wchar_type_node)
|
||
write_char ('w');
|
||
else if (TYPE_FOR_JAVA (type))
|
||
write_java_integer_type_codes (type);
|
||
else
|
||
{
|
||
size_t itk;
|
||
/* Assume TYPE is one of the shared integer type nodes. Find
|
||
it in the array of these nodes. */
|
||
iagain:
|
||
for (itk = 0; itk < itk_none; ++itk)
|
||
if (type == integer_types[itk])
|
||
{
|
||
/* Print the corresponding single-letter code. */
|
||
write_char (integer_type_codes[itk]);
|
||
break;
|
||
}
|
||
|
||
if (itk == itk_none)
|
||
{
|
||
tree t = c_common_type_for_mode (TYPE_MODE (type),
|
||
TYPE_UNSIGNED (type));
|
||
if (type != t)
|
||
{
|
||
type = t;
|
||
goto iagain;
|
||
}
|
||
|
||
if (TYPE_PRECISION (type) == 128)
|
||
write_char (TYPE_UNSIGNED (type) ? 'o' : 'n');
|
||
else
|
||
{
|
||
/* Allow for cases where TYPE is not one of the shared
|
||
integer type nodes and write a "vendor extended builtin
|
||
type" with a name the form intN or uintN, respectively.
|
||
Situations like this can happen if you have an
|
||
__attribute__((__mode__(__SI__))) type and use exotic
|
||
switches like '-mint8' on AVR. Of course, this is
|
||
undefined by the C++ ABI (and '-mint8' is not even
|
||
Standard C conforming), but when using such special
|
||
options you're pretty much in nowhere land anyway. */
|
||
const char *prefix;
|
||
char prec[11]; /* up to ten digits for an unsigned */
|
||
|
||
prefix = TYPE_UNSIGNED (type) ? "uint" : "int";
|
||
sprintf (prec, "%u", (unsigned) TYPE_PRECISION (type));
|
||
write_char ('u'); /* "vendor extended builtin type" */
|
||
write_unsigned_number (strlen (prefix) + strlen (prec));
|
||
write_string (prefix);
|
||
write_string (prec);
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case REAL_TYPE:
|
||
if (type == float_type_node
|
||
|| type == java_float_type_node)
|
||
write_char ('f');
|
||
else if (type == double_type_node
|
||
|| type == java_double_type_node)
|
||
write_char ('d');
|
||
else if (type == long_double_type_node)
|
||
write_char ('e');
|
||
else
|
||
gcc_unreachable ();
|
||
break;
|
||
|
||
default:
|
||
gcc_unreachable ();
|
||
}
|
||
}
|
||
|
||
/* Non-terminal <function-type>. NODE is a FUNCTION_TYPE or
|
||
METHOD_TYPE. The return type is mangled before the parameter
|
||
types.
|
||
|
||
<function-type> ::= F [Y] <bare-function-type> E */
|
||
|
||
static void
|
||
write_function_type (const tree type)
|
||
{
|
||
MANGLE_TRACE_TREE ("function-type", type);
|
||
|
||
/* For a pointer to member function, the function type may have
|
||
cv-qualifiers, indicating the quals for the artificial 'this'
|
||
parameter. */
|
||
if (TREE_CODE (type) == METHOD_TYPE)
|
||
{
|
||
/* The first parameter must be a POINTER_TYPE pointing to the
|
||
`this' parameter. */
|
||
tree this_type = TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (type)));
|
||
write_CV_qualifiers_for_type (this_type);
|
||
}
|
||
|
||
write_char ('F');
|
||
/* We don't track whether or not a type is `extern "C"'. Note that
|
||
you can have an `extern "C"' function that does not have
|
||
`extern "C"' type, and vice versa:
|
||
|
||
extern "C" typedef void function_t();
|
||
function_t f; // f has C++ linkage, but its type is
|
||
// `extern "C"'
|
||
|
||
typedef void function_t();
|
||
extern "C" function_t f; // Vice versa.
|
||
|
||
See [dcl.link]. */
|
||
write_bare_function_type (type, /*include_return_type_p=*/1,
|
||
/*decl=*/NULL);
|
||
write_char ('E');
|
||
}
|
||
|
||
/* Non-terminal <bare-function-type>. TYPE is a FUNCTION_TYPE or
|
||
METHOD_TYPE. If INCLUDE_RETURN_TYPE is nonzero, the return value
|
||
is mangled before the parameter types. If non-NULL, DECL is
|
||
FUNCTION_DECL for the function whose type is being emitted.
|
||
|
||
If DECL is a member of a Java type, then a literal 'J'
|
||
is output and the return type is mangled as if INCLUDE_RETURN_TYPE
|
||
were nonzero.
|
||
|
||
<bare-function-type> ::= [J]</signature/ type>+ */
|
||
|
||
static void
|
||
write_bare_function_type (const tree type, const int include_return_type_p,
|
||
const tree decl)
|
||
{
|
||
int java_method_p;
|
||
|
||
MANGLE_TRACE_TREE ("bare-function-type", type);
|
||
|
||
/* Detect Java methods and emit special encoding. */
|
||
if (decl != NULL
|
||
&& DECL_FUNCTION_MEMBER_P (decl)
|
||
&& TYPE_FOR_JAVA (DECL_CONTEXT (decl))
|
||
&& !DECL_CONSTRUCTOR_P (decl)
|
||
&& !DECL_DESTRUCTOR_P (decl)
|
||
&& !DECL_CONV_FN_P (decl))
|
||
{
|
||
java_method_p = 1;
|
||
write_char ('J');
|
||
}
|
||
else
|
||
{
|
||
java_method_p = 0;
|
||
}
|
||
|
||
/* Mangle the return type, if requested. */
|
||
if (include_return_type_p || java_method_p)
|
||
write_type (TREE_TYPE (type));
|
||
|
||
/* Now mangle the types of the arguments. */
|
||
write_method_parms (TYPE_ARG_TYPES (type),
|
||
TREE_CODE (type) == METHOD_TYPE,
|
||
decl);
|
||
}
|
||
|
||
/* Write the mangled representation of a method parameter list of
|
||
types given in PARM_TYPES. If METHOD_P is nonzero, the function is
|
||
considered a non-static method, and the this parameter is omitted.
|
||
If non-NULL, DECL is the FUNCTION_DECL for the function whose
|
||
parameters are being emitted. */
|
||
|
||
static void
|
||
write_method_parms (tree parm_types, const int method_p, const tree decl)
|
||
{
|
||
tree first_parm_type;
|
||
tree parm_decl = decl ? DECL_ARGUMENTS (decl) : NULL_TREE;
|
||
|
||
/* Assume this parameter type list is variable-length. If it ends
|
||
with a void type, then it's not. */
|
||
int varargs_p = 1;
|
||
|
||
/* If this is a member function, skip the first arg, which is the
|
||
this pointer.
|
||
"Member functions do not encode the type of their implicit this
|
||
parameter."
|
||
|
||
Similarly, there's no need to mangle artificial parameters, like
|
||
the VTT parameters for constructors and destructors. */
|
||
if (method_p)
|
||
{
|
||
parm_types = TREE_CHAIN (parm_types);
|
||
parm_decl = parm_decl ? TREE_CHAIN (parm_decl) : NULL_TREE;
|
||
|
||
while (parm_decl && DECL_ARTIFICIAL (parm_decl))
|
||
{
|
||
parm_types = TREE_CHAIN (parm_types);
|
||
parm_decl = TREE_CHAIN (parm_decl);
|
||
}
|
||
}
|
||
|
||
for (first_parm_type = parm_types;
|
||
parm_types;
|
||
parm_types = TREE_CHAIN (parm_types))
|
||
{
|
||
tree parm = TREE_VALUE (parm_types);
|
||
if (parm == void_type_node)
|
||
{
|
||
/* "Empty parameter lists, whether declared as () or
|
||
conventionally as (void), are encoded with a void parameter
|
||
(v)." */
|
||
if (parm_types == first_parm_type)
|
||
write_type (parm);
|
||
/* If the parm list is terminated with a void type, it's
|
||
fixed-length. */
|
||
varargs_p = 0;
|
||
/* A void type better be the last one. */
|
||
gcc_assert (TREE_CHAIN (parm_types) == NULL);
|
||
}
|
||
else
|
||
write_type (parm);
|
||
}
|
||
|
||
if (varargs_p)
|
||
/* <builtin-type> ::= z # ellipsis */
|
||
write_char ('z');
|
||
}
|
||
|
||
/* <class-enum-type> ::= <name> */
|
||
|
||
static void
|
||
write_class_enum_type (const tree type)
|
||
{
|
||
write_name (TYPE_NAME (type), /*ignore_local_scope=*/0);
|
||
}
|
||
|
||
/* Non-terminal <template-args>. ARGS is a TREE_VEC of template
|
||
arguments.
|
||
|
||
<template-args> ::= I <template-arg>+ E */
|
||
|
||
static void
|
||
write_template_args (tree args)
|
||
{
|
||
int i;
|
||
int length = TREE_VEC_LENGTH (args);
|
||
|
||
MANGLE_TRACE_TREE ("template-args", args);
|
||
|
||
write_char ('I');
|
||
|
||
gcc_assert (length > 0);
|
||
|
||
if (TREE_CODE (TREE_VEC_ELT (args, 0)) == TREE_VEC)
|
||
{
|
||
/* We have nested template args. We want the innermost template
|
||
argument list. */
|
||
args = TREE_VEC_ELT (args, length - 1);
|
||
length = TREE_VEC_LENGTH (args);
|
||
}
|
||
for (i = 0; i < length; ++i)
|
||
write_template_arg (TREE_VEC_ELT (args, i));
|
||
|
||
write_char ('E');
|
||
}
|
||
|
||
/* <expression> ::= <unary operator-name> <expression>
|
||
::= <binary operator-name> <expression> <expression>
|
||
::= <expr-primary>
|
||
|
||
<expr-primary> ::= <template-param>
|
||
::= L <type> <value number> E # literal
|
||
::= L <mangled-name> E # external name
|
||
::= sr <type> <unqualified-name>
|
||
::= sr <type> <unqualified-name> <template-args> */
|
||
|
||
static void
|
||
write_expression (tree expr)
|
||
{
|
||
enum tree_code code;
|
||
|
||
code = TREE_CODE (expr);
|
||
|
||
/* Skip NOP_EXPRs. They can occur when (say) a pointer argument
|
||
is converted (via qualification conversions) to another
|
||
type. */
|
||
while (TREE_CODE (expr) == NOP_EXPR
|
||
|| TREE_CODE (expr) == NON_LVALUE_EXPR)
|
||
{
|
||
expr = TREE_OPERAND (expr, 0);
|
||
code = TREE_CODE (expr);
|
||
}
|
||
|
||
if (code == BASELINK)
|
||
{
|
||
expr = BASELINK_FUNCTIONS (expr);
|
||
code = TREE_CODE (expr);
|
||
}
|
||
|
||
/* Handle pointers-to-members by making them look like expression
|
||
nodes. */
|
||
if (code == PTRMEM_CST)
|
||
{
|
||
expr = build_nt (ADDR_EXPR,
|
||
build_qualified_name (/*type=*/NULL_TREE,
|
||
PTRMEM_CST_CLASS (expr),
|
||
PTRMEM_CST_MEMBER (expr),
|
||
/*template_p=*/false));
|
||
code = TREE_CODE (expr);
|
||
}
|
||
|
||
/* Handle template parameters. */
|
||
if (code == TEMPLATE_TYPE_PARM
|
||
|| code == TEMPLATE_TEMPLATE_PARM
|
||
|| code == BOUND_TEMPLATE_TEMPLATE_PARM
|
||
|| code == TEMPLATE_PARM_INDEX)
|
||
write_template_param (expr);
|
||
/* Handle literals. */
|
||
else if (TREE_CODE_CLASS (code) == tcc_constant
|
||
|| (abi_version_at_least (2) && code == CONST_DECL))
|
||
write_template_arg_literal (expr);
|
||
else if (DECL_P (expr))
|
||
{
|
||
/* G++ 3.2 incorrectly mangled non-type template arguments of
|
||
enumeration type using their names. */
|
||
if (code == CONST_DECL)
|
||
G.need_abi_warning = 1;
|
||
write_char ('L');
|
||
write_mangled_name (expr, false);
|
||
write_char ('E');
|
||
}
|
||
else if (TREE_CODE (expr) == SIZEOF_EXPR
|
||
&& TYPE_P (TREE_OPERAND (expr, 0)))
|
||
{
|
||
write_string ("st");
|
||
write_type (TREE_OPERAND (expr, 0));
|
||
}
|
||
else if (abi_version_at_least (2) && TREE_CODE (expr) == SCOPE_REF)
|
||
{
|
||
tree scope = TREE_OPERAND (expr, 0);
|
||
tree member = TREE_OPERAND (expr, 1);
|
||
|
||
/* If the MEMBER is a real declaration, then the qualifying
|
||
scope was not dependent. Ideally, we would not have a
|
||
SCOPE_REF in those cases, but sometimes we do. If the second
|
||
argument is a DECL, then the name must not have been
|
||
dependent. */
|
||
if (DECL_P (member))
|
||
write_expression (member);
|
||
else
|
||
{
|
||
tree template_args;
|
||
|
||
write_string ("sr");
|
||
write_type (scope);
|
||
/* If MEMBER is a template-id, separate the template
|
||
from the arguments. */
|
||
if (TREE_CODE (member) == TEMPLATE_ID_EXPR)
|
||
{
|
||
template_args = TREE_OPERAND (member, 1);
|
||
member = TREE_OPERAND (member, 0);
|
||
}
|
||
else
|
||
template_args = NULL_TREE;
|
||
/* Write out the name of the MEMBER. */
|
||
if (IDENTIFIER_TYPENAME_P (member))
|
||
write_conversion_operator_name (TREE_TYPE (member));
|
||
else if (IDENTIFIER_OPNAME_P (member))
|
||
{
|
||
int i;
|
||
const char *mangled_name = NULL;
|
||
|
||
/* Unfortunately, there is no easy way to go from the
|
||
name of the operator back to the corresponding tree
|
||
code. */
|
||
for (i = 0; i < LAST_CPLUS_TREE_CODE; ++i)
|
||
if (operator_name_info[i].identifier == member)
|
||
{
|
||
/* The ABI says that we prefer binary operator
|
||
names to unary operator names. */
|
||
if (operator_name_info[i].arity == 2)
|
||
{
|
||
mangled_name = operator_name_info[i].mangled_name;
|
||
break;
|
||
}
|
||
else if (!mangled_name)
|
||
mangled_name = operator_name_info[i].mangled_name;
|
||
}
|
||
else if (assignment_operator_name_info[i].identifier
|
||
== member)
|
||
{
|
||
mangled_name
|
||
= assignment_operator_name_info[i].mangled_name;
|
||
break;
|
||
}
|
||
write_string (mangled_name);
|
||
}
|
||
else
|
||
write_source_name (member);
|
||
/* Write out the template arguments. */
|
||
if (template_args)
|
||
write_template_args (template_args);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
int i;
|
||
|
||
/* When we bind a variable or function to a non-type template
|
||
argument with reference type, we create an ADDR_EXPR to show
|
||
the fact that the entity's address has been taken. But, we
|
||
don't actually want to output a mangling code for the `&'. */
|
||
if (TREE_CODE (expr) == ADDR_EXPR
|
||
&& TREE_TYPE (expr)
|
||
&& TREE_CODE (TREE_TYPE (expr)) == REFERENCE_TYPE)
|
||
{
|
||
expr = TREE_OPERAND (expr, 0);
|
||
if (DECL_P (expr))
|
||
{
|
||
write_expression (expr);
|
||
return;
|
||
}
|
||
|
||
code = TREE_CODE (expr);
|
||
}
|
||
|
||
/* If it wasn't any of those, recursively expand the expression. */
|
||
write_string (operator_name_info[(int) code].mangled_name);
|
||
|
||
switch (code)
|
||
{
|
||
case CALL_EXPR:
|
||
sorry ("call_expr cannot be mangled due to a defect in the C++ ABI");
|
||
break;
|
||
|
||
case CAST_EXPR:
|
||
write_type (TREE_TYPE (expr));
|
||
/* There is no way to mangle a zero-operand cast like
|
||
"T()". */
|
||
if (!TREE_OPERAND (expr, 0))
|
||
sorry ("zero-operand casts cannot be mangled due to a defect "
|
||
"in the C++ ABI");
|
||
else
|
||
write_expression (TREE_VALUE (TREE_OPERAND (expr, 0)));
|
||
break;
|
||
|
||
case STATIC_CAST_EXPR:
|
||
case CONST_CAST_EXPR:
|
||
write_type (TREE_TYPE (expr));
|
||
write_expression (TREE_OPERAND (expr, 0));
|
||
break;
|
||
|
||
|
||
/* Handle pointers-to-members specially. */
|
||
case SCOPE_REF:
|
||
write_type (TREE_OPERAND (expr, 0));
|
||
if (TREE_CODE (TREE_OPERAND (expr, 1)) == IDENTIFIER_NODE)
|
||
write_source_name (TREE_OPERAND (expr, 1));
|
||
else if (TREE_CODE (TREE_OPERAND (expr, 1)) == TEMPLATE_ID_EXPR)
|
||
{
|
||
tree template_id;
|
||
tree name;
|
||
|
||
template_id = TREE_OPERAND (expr, 1);
|
||
name = TREE_OPERAND (template_id, 0);
|
||
/* FIXME: What about operators? */
|
||
gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE);
|
||
write_source_name (TREE_OPERAND (template_id, 0));
|
||
write_template_args (TREE_OPERAND (template_id, 1));
|
||
}
|
||
else
|
||
{
|
||
/* G++ 3.2 incorrectly put out both the "sr" code and
|
||
the nested name of the qualified name. */
|
||
G.need_abi_warning = 1;
|
||
write_encoding (TREE_OPERAND (expr, 1));
|
||
}
|
||
break;
|
||
|
||
default:
|
||
for (i = 0; i < TREE_CODE_LENGTH (code); ++i)
|
||
{
|
||
tree operand = TREE_OPERAND (expr, i);
|
||
/* As a GNU extension, the middle operand of a
|
||
conditional may be omitted. Since expression
|
||
manglings are supposed to represent the input token
|
||
stream, there's no good way to mangle such an
|
||
expression without extending the C++ ABI. */
|
||
if (code == COND_EXPR && i == 1 && !operand)
|
||
{
|
||
error ("omitted middle operand to %<?:%> operand "
|
||
"cannot be mangled");
|
||
continue;
|
||
}
|
||
write_expression (operand);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Literal subcase of non-terminal <template-arg>.
|
||
|
||
"Literal arguments, e.g. "A<42L>", are encoded with their type
|
||
and value. Negative integer values are preceded with "n"; for
|
||
example, "A<-42L>" becomes "1AILln42EE". The bool value false is
|
||
encoded as 0, true as 1." */
|
||
|
||
static void
|
||
write_template_arg_literal (const tree value)
|
||
{
|
||
write_char ('L');
|
||
write_type (TREE_TYPE (value));
|
||
|
||
switch (TREE_CODE (value))
|
||
{
|
||
case CONST_DECL:
|
||
write_integer_cst (DECL_INITIAL (value));
|
||
break;
|
||
|
||
case INTEGER_CST:
|
||
gcc_assert (!same_type_p (TREE_TYPE (value), boolean_type_node)
|
||
|| integer_zerop (value) || integer_onep (value));
|
||
write_integer_cst (value);
|
||
break;
|
||
|
||
case REAL_CST:
|
||
write_real_cst (value);
|
||
break;
|
||
|
||
default:
|
||
gcc_unreachable ();
|
||
}
|
||
|
||
write_char ('E');
|
||
}
|
||
|
||
/* Non-terminal <template-arg>.
|
||
|
||
<template-arg> ::= <type> # type
|
||
::= L <type> </value/ number> E # literal
|
||
::= LZ <name> E # external name
|
||
::= X <expression> E # expression */
|
||
|
||
static void
|
||
write_template_arg (tree node)
|
||
{
|
||
enum tree_code code = TREE_CODE (node);
|
||
|
||
MANGLE_TRACE_TREE ("template-arg", node);
|
||
|
||
/* A template template parameter's argument list contains TREE_LIST
|
||
nodes of which the value field is the actual argument. */
|
||
if (code == TREE_LIST)
|
||
{
|
||
node = TREE_VALUE (node);
|
||
/* If it's a decl, deal with its type instead. */
|
||
if (DECL_P (node))
|
||
{
|
||
node = TREE_TYPE (node);
|
||
code = TREE_CODE (node);
|
||
}
|
||
}
|
||
|
||
if (TREE_CODE (node) == NOP_EXPR
|
||
&& TREE_CODE (TREE_TYPE (node)) == REFERENCE_TYPE)
|
||
{
|
||
/* Template parameters can be of reference type. To maintain
|
||
internal consistency, such arguments use a conversion from
|
||
address of object to reference type. */
|
||
gcc_assert (TREE_CODE (TREE_OPERAND (node, 0)) == ADDR_EXPR);
|
||
if (abi_version_at_least (2))
|
||
node = TREE_OPERAND (TREE_OPERAND (node, 0), 0);
|
||
else
|
||
G.need_abi_warning = 1;
|
||
}
|
||
|
||
if (TYPE_P (node))
|
||
write_type (node);
|
||
else if (code == TEMPLATE_DECL)
|
||
/* A template appearing as a template arg is a template template arg. */
|
||
write_template_template_arg (node);
|
||
else if ((TREE_CODE_CLASS (code) == tcc_constant && code != PTRMEM_CST)
|
||
|| (abi_version_at_least (2) && code == CONST_DECL))
|
||
write_template_arg_literal (node);
|
||
else if (DECL_P (node))
|
||
{
|
||
/* Until ABI version 2, non-type template arguments of
|
||
enumeration type were mangled using their names. */
|
||
if (code == CONST_DECL && !abi_version_at_least (2))
|
||
G.need_abi_warning = 1;
|
||
write_char ('L');
|
||
/* Until ABI version 3, the underscore before the mangled name
|
||
was incorrectly omitted. */
|
||
if (!abi_version_at_least (3))
|
||
{
|
||
G.need_abi_warning = 1;
|
||
write_char ('Z');
|
||
}
|
||
else
|
||
write_string ("_Z");
|
||
write_encoding (node);
|
||
write_char ('E');
|
||
}
|
||
else
|
||
{
|
||
/* Template arguments may be expressions. */
|
||
write_char ('X');
|
||
write_expression (node);
|
||
write_char ('E');
|
||
}
|
||
}
|
||
|
||
/* <template-template-arg>
|
||
::= <name>
|
||
::= <substitution> */
|
||
|
||
static void
|
||
write_template_template_arg (const tree decl)
|
||
{
|
||
MANGLE_TRACE_TREE ("template-template-arg", decl);
|
||
|
||
if (find_substitution (decl))
|
||
return;
|
||
write_name (decl, /*ignore_local_scope=*/0);
|
||
add_substitution (decl);
|
||
}
|
||
|
||
|
||
/* Non-terminal <array-type>. TYPE is an ARRAY_TYPE.
|
||
|
||
<array-type> ::= A [</dimension/ number>] _ </element/ type>
|
||
::= A <expression> _ </element/ type>
|
||
|
||
"Array types encode the dimension (number of elements) and the
|
||
element type. For variable length arrays, the dimension (but not
|
||
the '_' separator) is omitted." */
|
||
|
||
static void
|
||
write_array_type (const tree type)
|
||
{
|
||
write_char ('A');
|
||
if (TYPE_DOMAIN (type))
|
||
{
|
||
tree index_type;
|
||
tree max;
|
||
|
||
index_type = TYPE_DOMAIN (type);
|
||
/* The INDEX_TYPE gives the upper and lower bounds of the
|
||
array. */
|
||
max = TYPE_MAX_VALUE (index_type);
|
||
if (TREE_CODE (max) == INTEGER_CST)
|
||
{
|
||
/* The ABI specifies that we should mangle the number of
|
||
elements in the array, not the largest allowed index. */
|
||
max = size_binop (PLUS_EXPR, max, size_one_node);
|
||
write_unsigned_number (tree_low_cst (max, 1));
|
||
}
|
||
else
|
||
{
|
||
max = TREE_OPERAND (max, 0);
|
||
if (!abi_version_at_least (2))
|
||
{
|
||
/* value_dependent_expression_p presumes nothing is
|
||
dependent when PROCESSING_TEMPLATE_DECL is zero. */
|
||
++processing_template_decl;
|
||
if (!value_dependent_expression_p (max))
|
||
G.need_abi_warning = 1;
|
||
--processing_template_decl;
|
||
}
|
||
write_expression (max);
|
||
}
|
||
|
||
}
|
||
write_char ('_');
|
||
write_type (TREE_TYPE (type));
|
||
}
|
||
|
||
/* Non-terminal <pointer-to-member-type> for pointer-to-member
|
||
variables. TYPE is a pointer-to-member POINTER_TYPE.
|
||
|
||
<pointer-to-member-type> ::= M </class/ type> </member/ type> */
|
||
|
||
static void
|
||
write_pointer_to_member_type (const tree type)
|
||
{
|
||
write_char ('M');
|
||
write_type (TYPE_PTRMEM_CLASS_TYPE (type));
|
||
write_type (TYPE_PTRMEM_POINTED_TO_TYPE (type));
|
||
}
|
||
|
||
/* Non-terminal <template-param>. PARM is a TEMPLATE_TYPE_PARM,
|
||
TEMPLATE_TEMPLATE_PARM, BOUND_TEMPLATE_TEMPLATE_PARM or a
|
||
TEMPLATE_PARM_INDEX.
|
||
|
||
<template-param> ::= T </parameter/ number> _ */
|
||
|
||
static void
|
||
write_template_param (const tree parm)
|
||
{
|
||
int parm_index;
|
||
int parm_level;
|
||
tree parm_type = NULL_TREE;
|
||
|
||
MANGLE_TRACE_TREE ("template-parm", parm);
|
||
|
||
switch (TREE_CODE (parm))
|
||
{
|
||
case TEMPLATE_TYPE_PARM:
|
||
case TEMPLATE_TEMPLATE_PARM:
|
||
case BOUND_TEMPLATE_TEMPLATE_PARM:
|
||
parm_index = TEMPLATE_TYPE_IDX (parm);
|
||
parm_level = TEMPLATE_TYPE_LEVEL (parm);
|
||
break;
|
||
|
||
case TEMPLATE_PARM_INDEX:
|
||
parm_index = TEMPLATE_PARM_IDX (parm);
|
||
parm_level = TEMPLATE_PARM_LEVEL (parm);
|
||
parm_type = TREE_TYPE (TEMPLATE_PARM_DECL (parm));
|
||
break;
|
||
|
||
default:
|
||
gcc_unreachable ();
|
||
}
|
||
|
||
write_char ('T');
|
||
/* NUMBER as it appears in the mangling is (-1)-indexed, with the
|
||
earliest template param denoted by `_'. */
|
||
if (parm_index > 0)
|
||
write_unsigned_number (parm_index - 1);
|
||
write_char ('_');
|
||
}
|
||
|
||
/* <template-template-param>
|
||
::= <template-param>
|
||
::= <substitution> */
|
||
|
||
static void
|
||
write_template_template_param (const tree parm)
|
||
{
|
||
tree template = NULL_TREE;
|
||
|
||
/* PARM, a TEMPLATE_TEMPLATE_PARM, is an instantiation of the
|
||
template template parameter. The substitution candidate here is
|
||
only the template. */
|
||
if (TREE_CODE (parm) == BOUND_TEMPLATE_TEMPLATE_PARM)
|
||
{
|
||
template
|
||
= TI_TEMPLATE (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (parm));
|
||
if (find_substitution (template))
|
||
return;
|
||
}
|
||
|
||
/* <template-param> encodes only the template parameter position,
|
||
not its template arguments, which is fine here. */
|
||
write_template_param (parm);
|
||
if (template)
|
||
add_substitution (template);
|
||
}
|
||
|
||
/* Non-terminal <substitution>.
|
||
|
||
<substitution> ::= S <seq-id> _
|
||
::= S_ */
|
||
|
||
static void
|
||
write_substitution (const int seq_id)
|
||
{
|
||
MANGLE_TRACE ("substitution", "");
|
||
|
||
write_char ('S');
|
||
if (seq_id > 0)
|
||
write_number (seq_id - 1, /*unsigned=*/1, 36);
|
||
write_char ('_');
|
||
}
|
||
|
||
/* Start mangling ENTITY. */
|
||
|
||
static inline void
|
||
start_mangling (const tree entity, const bool ident_p)
|
||
{
|
||
G.entity = entity;
|
||
G.need_abi_warning = false;
|
||
if (!ident_p)
|
||
{
|
||
obstack_free (&name_obstack, name_base);
|
||
mangle_obstack = &name_obstack;
|
||
name_base = obstack_alloc (&name_obstack, 0);
|
||
}
|
||
else
|
||
mangle_obstack = &ident_hash->stack;
|
||
}
|
||
|
||
/* Done with mangling. Return the generated mangled name. If WARN is
|
||
true, and the name of G.entity will be mangled differently in a
|
||
future version of the ABI, issue a warning. */
|
||
|
||
static inline const char *
|
||
finish_mangling (const bool warn)
|
||
{
|
||
if (warn_abi && warn && G.need_abi_warning)
|
||
warning (OPT_Wabi, "the mangled name of %qD will change in a future "
|
||
"version of GCC",
|
||
G.entity);
|
||
|
||
/* Clear all the substitutions. */
|
||
VEC_truncate (tree, G.substitutions, 0);
|
||
|
||
/* Null-terminate the string. */
|
||
write_char ('\0');
|
||
|
||
return (const char *) obstack_finish (mangle_obstack);
|
||
}
|
||
|
||
/* Initialize data structures for mangling. */
|
||
|
||
void
|
||
init_mangle (void)
|
||
{
|
||
gcc_obstack_init (&name_obstack);
|
||
name_base = obstack_alloc (&name_obstack, 0);
|
||
G.substitutions = NULL;
|
||
|
||
/* Cache these identifiers for quick comparison when checking for
|
||
standard substitutions. */
|
||
subst_identifiers[SUBID_ALLOCATOR] = get_identifier ("allocator");
|
||
subst_identifiers[SUBID_BASIC_STRING] = get_identifier ("basic_string");
|
||
subst_identifiers[SUBID_CHAR_TRAITS] = get_identifier ("char_traits");
|
||
subst_identifiers[SUBID_BASIC_ISTREAM] = get_identifier ("basic_istream");
|
||
subst_identifiers[SUBID_BASIC_OSTREAM] = get_identifier ("basic_ostream");
|
||
subst_identifiers[SUBID_BASIC_IOSTREAM] = get_identifier ("basic_iostream");
|
||
}
|
||
|
||
/* Generate the mangled name of DECL. */
|
||
|
||
static const char *
|
||
mangle_decl_string (const tree decl)
|
||
{
|
||
const char *result;
|
||
|
||
start_mangling (decl, /*ident_p=*/true);
|
||
|
||
if (TREE_CODE (decl) == TYPE_DECL)
|
||
write_type (TREE_TYPE (decl));
|
||
else
|
||
write_mangled_name (decl, true);
|
||
|
||
result = finish_mangling (/*warn=*/true);
|
||
if (DEBUG_MANGLE)
|
||
fprintf (stderr, "mangle_decl_string = '%s'\n\n", result);
|
||
return result;
|
||
}
|
||
|
||
/* Like get_identifier, except that NAME is assumed to have been
|
||
allocated on the obstack used by the identifier hash table. */
|
||
|
||
static inline tree
|
||
get_identifier_nocopy (const char *name)
|
||
{
|
||
hashnode ht_node = ht_lookup (ident_hash, (const unsigned char *) name,
|
||
strlen (name), HT_ALLOCED);
|
||
return HT_IDENT_TO_GCC_IDENT (ht_node);
|
||
}
|
||
|
||
/* Create an identifier for the external mangled name of DECL. */
|
||
|
||
void
|
||
mangle_decl (const tree decl)
|
||
{
|
||
SET_DECL_ASSEMBLER_NAME (decl,
|
||
get_identifier_nocopy (mangle_decl_string (decl)));
|
||
}
|
||
|
||
/* Generate the mangled representation of TYPE. */
|
||
|
||
const char *
|
||
mangle_type_string (const tree type)
|
||
{
|
||
const char *result;
|
||
|
||
start_mangling (type, /*ident_p=*/false);
|
||
write_type (type);
|
||
result = finish_mangling (/*warn=*/false);
|
||
if (DEBUG_MANGLE)
|
||
fprintf (stderr, "mangle_type_string = '%s'\n\n", result);
|
||
return result;
|
||
}
|
||
|
||
/* Create an identifier for the mangled name of a special component
|
||
for belonging to TYPE. CODE is the ABI-specified code for this
|
||
component. */
|
||
|
||
static tree
|
||
mangle_special_for_type (const tree type, const char *code)
|
||
{
|
||
const char *result;
|
||
|
||
/* We don't have an actual decl here for the special component, so
|
||
we can't just process the <encoded-name>. Instead, fake it. */
|
||
start_mangling (type, /*ident_p=*/true);
|
||
|
||
/* Start the mangling. */
|
||
write_string ("_Z");
|
||
write_string (code);
|
||
|
||
/* Add the type. */
|
||
write_type (type);
|
||
result = finish_mangling (/*warn=*/false);
|
||
|
||
if (DEBUG_MANGLE)
|
||
fprintf (stderr, "mangle_special_for_type = %s\n\n", result);
|
||
|
||
return get_identifier_nocopy (result);
|
||
}
|
||
|
||
/* Create an identifier for the mangled representation of the typeinfo
|
||
structure for TYPE. */
|
||
|
||
tree
|
||
mangle_typeinfo_for_type (const tree type)
|
||
{
|
||
return mangle_special_for_type (type, "TI");
|
||
}
|
||
|
||
/* Create an identifier for the mangled name of the NTBS containing
|
||
the mangled name of TYPE. */
|
||
|
||
tree
|
||
mangle_typeinfo_string_for_type (const tree type)
|
||
{
|
||
return mangle_special_for_type (type, "TS");
|
||
}
|
||
|
||
/* Create an identifier for the mangled name of the vtable for TYPE. */
|
||
|
||
tree
|
||
mangle_vtbl_for_type (const tree type)
|
||
{
|
||
return mangle_special_for_type (type, "TV");
|
||
}
|
||
|
||
/* Returns an identifier for the mangled name of the VTT for TYPE. */
|
||
|
||
tree
|
||
mangle_vtt_for_type (const tree type)
|
||
{
|
||
return mangle_special_for_type (type, "TT");
|
||
}
|
||
|
||
/* Return an identifier for a construction vtable group. TYPE is
|
||
the most derived class in the hierarchy; BINFO is the base
|
||
subobject for which this construction vtable group will be used.
|
||
|
||
This mangling isn't part of the ABI specification; in the ABI
|
||
specification, the vtable group is dumped in the same COMDAT as the
|
||
main vtable, and is referenced only from that vtable, so it doesn't
|
||
need an external name. For binary formats without COMDAT sections,
|
||
though, we need external names for the vtable groups.
|
||
|
||
We use the production
|
||
|
||
<special-name> ::= CT <type> <offset number> _ <base type> */
|
||
|
||
tree
|
||
mangle_ctor_vtbl_for_type (const tree type, const tree binfo)
|
||
{
|
||
const char *result;
|
||
|
||
start_mangling (type, /*ident_p=*/true);
|
||
|
||
write_string ("_Z");
|
||
write_string ("TC");
|
||
write_type (type);
|
||
write_integer_cst (BINFO_OFFSET (binfo));
|
||
write_char ('_');
|
||
write_type (BINFO_TYPE (binfo));
|
||
|
||
result = finish_mangling (/*warn=*/false);
|
||
if (DEBUG_MANGLE)
|
||
fprintf (stderr, "mangle_ctor_vtbl_for_type = %s\n\n", result);
|
||
return get_identifier_nocopy (result);
|
||
}
|
||
|
||
/* Mangle a this pointer or result pointer adjustment.
|
||
|
||
<call-offset> ::= h <fixed offset number> _
|
||
::= v <fixed offset number> _ <virtual offset number> _ */
|
||
|
||
static void
|
||
mangle_call_offset (const tree fixed_offset, const tree virtual_offset)
|
||
{
|
||
write_char (virtual_offset ? 'v' : 'h');
|
||
|
||
/* For either flavor, write the fixed offset. */
|
||
write_integer_cst (fixed_offset);
|
||
write_char ('_');
|
||
|
||
/* For a virtual thunk, add the virtual offset. */
|
||
if (virtual_offset)
|
||
{
|
||
write_integer_cst (virtual_offset);
|
||
write_char ('_');
|
||
}
|
||
}
|
||
|
||
/* Return an identifier for the mangled name of a this-adjusting or
|
||
covariant thunk to FN_DECL. FIXED_OFFSET is the initial adjustment
|
||
to this used to find the vptr. If VIRTUAL_OFFSET is non-NULL, this
|
||
is a virtual thunk, and it is the vtbl offset in
|
||
bytes. THIS_ADJUSTING is nonzero for a this adjusting thunk and
|
||
zero for a covariant thunk. Note, that FN_DECL might be a covariant
|
||
thunk itself. A covariant thunk name always includes the adjustment
|
||
for the this pointer, even if there is none.
|
||
|
||
<special-name> ::= T <call-offset> <base encoding>
|
||
::= Tc <this_adjust call-offset> <result_adjust call-offset>
|
||
<base encoding> */
|
||
|
||
tree
|
||
mangle_thunk (tree fn_decl, const int this_adjusting, tree fixed_offset,
|
||
tree virtual_offset)
|
||
{
|
||
const char *result;
|
||
|
||
start_mangling (fn_decl, /*ident_p=*/true);
|
||
|
||
write_string ("_Z");
|
||
write_char ('T');
|
||
|
||
if (!this_adjusting)
|
||
{
|
||
/* Covariant thunk with no this adjustment */
|
||
write_char ('c');
|
||
mangle_call_offset (integer_zero_node, NULL_TREE);
|
||
mangle_call_offset (fixed_offset, virtual_offset);
|
||
}
|
||
else if (!DECL_THUNK_P (fn_decl))
|
||
/* Plain this adjusting thunk. */
|
||
mangle_call_offset (fixed_offset, virtual_offset);
|
||
else
|
||
{
|
||
/* This adjusting thunk to covariant thunk. */
|
||
write_char ('c');
|
||
mangle_call_offset (fixed_offset, virtual_offset);
|
||
fixed_offset = ssize_int (THUNK_FIXED_OFFSET (fn_decl));
|
||
virtual_offset = THUNK_VIRTUAL_OFFSET (fn_decl);
|
||
if (virtual_offset)
|
||
virtual_offset = BINFO_VPTR_FIELD (virtual_offset);
|
||
mangle_call_offset (fixed_offset, virtual_offset);
|
||
fn_decl = THUNK_TARGET (fn_decl);
|
||
}
|
||
|
||
/* Scoped name. */
|
||
write_encoding (fn_decl);
|
||
|
||
result = finish_mangling (/*warn=*/false);
|
||
if (DEBUG_MANGLE)
|
||
fprintf (stderr, "mangle_thunk = %s\n\n", result);
|
||
return get_identifier_nocopy (result);
|
||
}
|
||
|
||
/* This hash table maps TYPEs to the IDENTIFIER for a conversion
|
||
operator to TYPE. The nodes are IDENTIFIERs whose TREE_TYPE is the
|
||
TYPE. */
|
||
|
||
static GTY ((param_is (union tree_node))) htab_t conv_type_names;
|
||
|
||
/* Hash a node (VAL1) in the table. */
|
||
|
||
static hashval_t
|
||
hash_type (const void *val)
|
||
{
|
||
return (hashval_t) TYPE_UID (TREE_TYPE ((tree) val));
|
||
}
|
||
|
||
/* Compare VAL1 (a node in the table) with VAL2 (a TYPE). */
|
||
|
||
static int
|
||
compare_type (const void *val1, const void *val2)
|
||
{
|
||
return TREE_TYPE ((tree) val1) == (tree) val2;
|
||
}
|
||
|
||
/* Return an identifier for the mangled unqualified name for a
|
||
conversion operator to TYPE. This mangling is not specified by the
|
||
ABI spec; it is only used internally. */
|
||
|
||
tree
|
||
mangle_conv_op_name_for_type (const tree type)
|
||
{
|
||
void **slot;
|
||
tree identifier;
|
||
|
||
if (type == error_mark_node)
|
||
return error_mark_node;
|
||
|
||
if (conv_type_names == NULL)
|
||
conv_type_names = htab_create_ggc (31, &hash_type, &compare_type, NULL);
|
||
|
||
slot = htab_find_slot_with_hash (conv_type_names, type,
|
||
(hashval_t) TYPE_UID (type), INSERT);
|
||
identifier = (tree)*slot;
|
||
if (!identifier)
|
||
{
|
||
char buffer[64];
|
||
|
||
/* Create a unique name corresponding to TYPE. */
|
||
sprintf (buffer, "operator %lu",
|
||
(unsigned long) htab_elements (conv_type_names));
|
||
identifier = get_identifier (buffer);
|
||
*slot = identifier;
|
||
|
||
/* Hang TYPE off the identifier so it can be found easily later
|
||
when performing conversions. */
|
||
TREE_TYPE (identifier) = type;
|
||
|
||
/* Set bits on the identifier so we know later it's a conversion. */
|
||
IDENTIFIER_OPNAME_P (identifier) = 1;
|
||
IDENTIFIER_TYPENAME_P (identifier) = 1;
|
||
}
|
||
|
||
return identifier;
|
||
}
|
||
|
||
/* Return an identifier for the name of an initialization guard
|
||
variable for indicated VARIABLE. */
|
||
|
||
tree
|
||
mangle_guard_variable (const tree variable)
|
||
{
|
||
start_mangling (variable, /*ident_p=*/true);
|
||
write_string ("_ZGV");
|
||
if (strncmp (IDENTIFIER_POINTER (DECL_NAME (variable)), "_ZGR", 4) == 0)
|
||
/* The name of a guard variable for a reference temporary should refer
|
||
to the reference, not the temporary. */
|
||
write_string (IDENTIFIER_POINTER (DECL_NAME (variable)) + 4);
|
||
else
|
||
write_name (variable, /*ignore_local_scope=*/0);
|
||
return get_identifier_nocopy (finish_mangling (/*warn=*/false));
|
||
}
|
||
|
||
/* Return an identifier for the name of a temporary variable used to
|
||
initialize a static reference. This isn't part of the ABI, but we might
|
||
as well call them something readable. */
|
||
|
||
tree
|
||
mangle_ref_init_variable (const tree variable)
|
||
{
|
||
start_mangling (variable, /*ident_p=*/true);
|
||
write_string ("_ZGR");
|
||
write_name (variable, /*ignore_local_scope=*/0);
|
||
return get_identifier_nocopy (finish_mangling (/*warn=*/false));
|
||
}
|
||
|
||
|
||
/* Foreign language type mangling section. */
|
||
|
||
/* How to write the type codes for the integer Java type. */
|
||
|
||
static void
|
||
write_java_integer_type_codes (const tree type)
|
||
{
|
||
if (type == java_int_type_node)
|
||
write_char ('i');
|
||
else if (type == java_short_type_node)
|
||
write_char ('s');
|
||
else if (type == java_byte_type_node)
|
||
write_char ('c');
|
||
else if (type == java_char_type_node)
|
||
write_char ('w');
|
||
else if (type == java_long_type_node)
|
||
write_char ('x');
|
||
else if (type == java_boolean_type_node)
|
||
write_char ('b');
|
||
else
|
||
gcc_unreachable ();
|
||
}
|
||
|
||
#include "gt-cp-mangle.h"
|