-/* Name mangling for the new standard C++ ABI.
- Copyright (C) 2000 Free Software Foundation, Inc.
- Written by Alex Samuel <sameul@codesourcery.com>
+/* Name mangling for the 3.0 C++ ABI.
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
+ Free Software Foundation, Inc.
+ Written by Alex Samuel <samuel@codesourcery.com>
- This file is part of GNU CC.
+ This file is part of GCC.
- GNU CC is free software; you can redistribute it and/or modify it
+ GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
- GNU CC is distributed in the hope that it will be useful, but
+ GCC is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This file implements mangling of C++ names according to the IA64
C++ ABI specification. A mangled name encodes a function or
particular constructs when the appropriate decl for that construct
is not available. These are:
- mangle_typeinfo_for_type: typeinfo data
- mangle_typeinfo_string_for_type: typeinfo type name
- mangle_vtbl_for_type: virtual table data
- mangle_vtt_for_type: VTT data
- mangle_ctor_vtbl_for_type: `C-in-B' constructor virtual table data
- mangle_thunk: thunk function or entry
-
-*/
+ mangle_typeinfo_for_type: typeinfo data
+ mangle_typeinfo_string_for_type: typeinfo type name
+ mangle_vtbl_for_type: virtual table data
+ mangle_vtt_for_type: VTT data
+ mangle_ctor_vtbl_for_type: `C-in-B' constructor virtual table data
+ mangle_thunk: thunk function or entry */
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "tree.h"
+#include "tm_p.h"
#include "cp-tree.h"
+#include "real.h"
#include "obstack.h"
#include "toplev.h"
#include "varray.h"
+#include "flags.h"
+#include "target.h"
/* Debugging support. */
/* Macros for tracing the write_* functions. */
#if DEBUG_MANGLE
# define MANGLE_TRACE(FN, INPUT) \
- fprintf (stderr, " %-24s: %-24s\n", FN, INPUT)
+ fprintf (stderr, " %-24s: %-24s\n", (FN), (INPUT))
# define MANGLE_TRACE_TREE(FN, NODE) \
fprintf (stderr, " %-24s: %-24s (%p)\n", \
- FN, tree_code_name[TREE_CODE (NODE)], (void *) NODE)
+ (FN), tree_code_name[TREE_CODE (NODE)], (void *) (NODE))
#else
# define MANGLE_TRACE(FN, INPUT)
# define MANGLE_TRACE_TREE(FN, NODE)
#endif
-/* Non-zero if NODE is a class template-id. We can't rely on
+/* Nonzero if NODE is a class template-id. We can't rely on
CLASSTYPE_USE_TEMPLATE here because of tricky bugs in the parser
that hard to distinguish A<T> from A, where A<T> is the type as
instantiated outside of the template, and A is the type used
- without parameters inside the template. The logic here is
- historical magic that apparently produces the right result. */
-#define CLASSTYPE_TEMPLATE_ID_P(NODE) \
- (TYPE_LANG_SPECIFIC (NODE) != NULL \
- && CLASSTYPE_TEMPLATE_INFO (NODE) != NULL \
- && (PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)) \
- || (TREE_CODE (CP_DECL_CONTEXT (CLASSTYPE_TI_TEMPLATE (NODE))) \
- == FUNCTION_DECL)))
+ without parameters inside the template. */
+#define CLASSTYPE_TEMPLATE_ID_P(NODE) \
+ (TYPE_LANG_SPECIFIC (NODE) != NULL \
+ && (TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM \
+ || (CLASSTYPE_TEMPLATE_INFO (NODE) != NULL \
+ && (PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE))))))
/* Things we only need one of. This module is not reentrant. */
-static struct globals
+typedef struct globals GTY(())
{
- /* The name in which we're building the mangled name. */
- struct obstack name_obstack;
-
/* An array of the current substitution candidates, in the order
we've seen them. */
- varray_type substitutions;
-} G;
+ VEC(tree,gc) *substitutions;
+
+ /* The entity that is being mangled. */
+ tree GTY ((skip)) entity;
+
+ /* True if the mangling will be different in a future version of the
+ ABI. */
+ bool need_abi_warning;
+} globals;
+
+static GTY (()) globals G;
+
+/* The obstack on which we build mangled names. */
+static struct obstack *mangle_obstack;
+
+/* The obstack on which we build mangled names that are not going to
+ be IDENTIFIER_NODEs. */
+static struct obstack name_obstack;
+
+/* The first object on the name_obstack; we use this to free memory
+ allocated on the name_obstack. */
+static void *name_base;
/* Indices into subst_identifiers. These are identifiers used in
special substitution rules. */
/* For quick substitution checks, look up these common identifiers
once only. */
-static tree subst_identifiers[SUBID_MAX];
+static GTY(()) tree subst_identifiers[SUBID_MAX];
/* Single-letter codes for builtin integer types, defined in
<builtin-type>. These are indexed by integer_type_kind values. */
-static char
+static const char
integer_type_codes[itk_none] =
{
'c', /* itk_char */
'y' /* itk_unsigned_long_long */
};
-static int decl_is_template_id PARAMS ((tree, tree*));
+static int decl_is_template_id (const tree, tree* const);
/* Functions for handling substitutions. */
-static inline tree canonicalize_for_substitution PARAMS ((tree));
-static void add_substitution PARAMS ((tree));
-static inline int is_std_substitution PARAMS ((tree, substitution_identifier_index_t));
-static inline int is_std_substitution_char PARAMS ((tree, substitution_identifier_index_t));
-static int find_substitution PARAMS ((tree));
+static inline tree canonicalize_for_substitution (tree);
+static void add_substitution (tree);
+static inline int is_std_substitution (const tree,
+ const substitution_identifier_index_t);
+static inline int is_std_substitution_char (const tree,
+ const substitution_identifier_index_t);
+static int find_substitution (tree);
+static void mangle_call_offset (const tree, const tree);
/* Functions for emitting mangled representations of things. */
-static void write_mangled_name PARAMS ((tree));
-static void write_encoding PARAMS ((tree));
-static void write_name PARAMS ((tree));
-static void write_unscoped_name PARAMS ((tree));
-static void write_unscoped_template_name PARAMS ((tree));
-static void write_nested_name PARAMS ((tree));
-static void write_prefix PARAMS ((tree));
-static void write_template_prefix PARAMS ((tree));
-static void write_component PARAMS ((tree));
-static void write_unqualified_name PARAMS ((tree));
-static void write_source_name PARAMS ((tree));
-static void write_number PARAMS ((unsigned HOST_WIDE_INT, int,
- unsigned int));
-static void write_integer_cst PARAMS ((tree));
-static void write_identifier PARAMS ((char *));
-static void write_special_name_constructor PARAMS ((tree));
-static void write_special_name_destructor PARAMS ((tree));
-static void write_type PARAMS ((tree));
-static int write_CV_qualifiers_for_type PARAMS ((tree));
-static void write_builtin_type PARAMS ((tree));
-static void write_function_type PARAMS ((tree, int));
-static void write_bare_function_type PARAMS ((tree, int));
-static void write_method_parms PARAMS ((tree, int));
-static void write_class_enum_type PARAMS ((tree));
-static void write_template_args PARAMS ((tree));
-static void write_expression PARAMS ((tree));
-static void write_template_arg_literal PARAMS ((tree));
-static void write_template_arg PARAMS ((tree));
-static void write_template_template_arg PARAMS ((tree));
-static void write_array_type PARAMS ((tree));
-static void write_pointer_to_member_type PARAMS ((tree));
-static void write_template_param PARAMS ((tree));
-static void write_template_template_param PARAMS ((tree));
-static void write_substitution PARAMS ((int));
-static int discriminator_for_local_entity PARAMS ((tree));
-static int discriminator_for_string_literal PARAMS ((tree, tree));
-static void write_discriminator PARAMS ((int));
-static void write_local_name PARAMS ((tree, tree));
-static void dump_substitution_candidates PARAMS ((void));
-static const char *mangle_decl_string PARAMS ((tree));
+static void write_mangled_name (const tree, bool);
+static void write_encoding (const tree);
+static void write_name (tree, const int);
+static void write_unscoped_name (const tree);
+static void write_unscoped_template_name (const tree);
+static void write_nested_name (const tree);
+static void write_prefix (const tree);
+static void write_template_prefix (const tree);
+static void write_unqualified_name (const tree);
+static void write_conversion_operator_name (const tree);
+static void write_source_name (tree);
+static int hwint_to_ascii (unsigned HOST_WIDE_INT, const unsigned int, char *,
+ const unsigned int);
+static void write_number (unsigned HOST_WIDE_INT, const int,
+ const unsigned int);
+static void write_integer_cst (const tree);
+static void write_real_cst (const tree);
+static void write_identifier (const char *);
+static void write_special_name_constructor (const tree);
+static void write_special_name_destructor (const tree);
+static void write_type (tree);
+static int write_CV_qualifiers_for_type (const tree);
+static void write_builtin_type (tree);
+static void write_function_type (const tree);
+static void write_bare_function_type (const tree, const int, const tree);
+static void write_method_parms (tree, const int, const tree);
+static void write_class_enum_type (const tree);
+static void write_template_args (tree);
+static void write_expression (tree);
+static void write_template_arg_literal (const tree);
+static void write_template_arg (tree);
+static void write_template_template_arg (const tree);
+static void write_array_type (const tree);
+static void write_pointer_to_member_type (const tree);
+static void write_template_param (const tree);
+static void write_template_template_param (const tree);
+static void write_substitution (const int);
+static int discriminator_for_local_entity (tree);
+static int discriminator_for_string_literal (tree, tree);
+static void write_discriminator (const int);
+static void write_local_name (const tree, const tree, const tree);
+static void dump_substitution_candidates (void);
+static tree mangle_decl_string (const tree);
/* Control functions. */
-static inline void start_mangling PARAMS ((void));
-static inline const char *finish_mangling PARAMS ((void));
-static tree mangle_special_for_type PARAMS ((tree, const char *));
+static inline void start_mangling (const tree);
+static inline const char *finish_mangling (const bool);
+static tree mangle_special_for_type (const tree, const char *);
+
+/* Foreign language functions. */
+
+static void write_java_integer_type_codes (const tree);
/* Append a single character to the end of the mangled
representation. */
-#define write_char(CHAR) \
- obstack_1grow (&G.name_obstack, (CHAR))
+#define write_char(CHAR) \
+ obstack_1grow (mangle_obstack, (CHAR))
+
+/* Append a sized buffer to the end of the mangled representation. */
+#define write_chars(CHAR, LEN) \
+ obstack_grow (mangle_obstack, (CHAR), (LEN))
/* Append a NUL-terminated string to the end of the mangled
representation. */
-#define write_string(STRING) \
- obstack_grow (&G.name_obstack, (STRING), strlen (STRING))
+#define write_string(STRING) \
+ obstack_grow (mangle_obstack, (STRING), strlen (STRING))
-/* Return the position at which the next character will be appended to
- the mangled representation. */
-#define mangled_position() \
- obstack_object_size (&G.name_obstack)
-
-/* Non-zero if NODE1 and NODE2 are both TREE_LIST nodes and have the
+/* Nonzero if NODE1 and NODE2 are both TREE_LIST nodes and have the
same purpose (context, which may be a type) and value (template
decl). See write_template_prefix for more information on what this
is used for. */
-#define NESTED_TEMPLATE_MATCH(NODE1, NODE2) \
- (TREE_CODE (NODE1) == TREE_LIST \
- && TREE_CODE (NODE2) == TREE_LIST \
- && ((TYPE_P (TREE_PURPOSE (NODE1)) \
- && same_type_p (TREE_PURPOSE (NODE1), TREE_PURPOSE (NODE2)))\
- || TREE_PURPOSE (NODE1) == TREE_PURPOSE (NODE2)) \
+#define NESTED_TEMPLATE_MATCH(NODE1, NODE2) \
+ (TREE_CODE (NODE1) == TREE_LIST \
+ && TREE_CODE (NODE2) == TREE_LIST \
+ && ((TYPE_P (TREE_PURPOSE (NODE1)) \
+ && same_type_p (TREE_PURPOSE (NODE1), TREE_PURPOSE (NODE2))) \
+ || TREE_PURPOSE (NODE1) == TREE_PURPOSE (NODE2)) \
&& TREE_VALUE (NODE1) == TREE_VALUE (NODE2))
-/* Write out a signed quantity in base 10. */
-#define write_signed_number(NUMBER) \
- write_number (NUMBER, /*unsigned_p=*/0, 10)
-
/* Write out an unsigned quantity in base 10. */
-#define write_unsigned_number(NUMBER) \
- write_number (NUMBER, /*unsigned_p=*/1, 10)
+#define write_unsigned_number(NUMBER) \
+ write_number ((NUMBER), /*unsigned_p=*/1, 10)
-/* If DECL is a template instance, return non-zero and, if
+/* If DECL is a template instance, return nonzero and, if
TEMPLATE_INFO is non-NULL, set *TEMPLATE_INFO to its template info.
Otherwise return zero. */
static int
-decl_is_template_id (decl, template_info)
- tree decl;
- tree* template_info;
+decl_is_template_id (const tree decl, tree* const template_info)
{
if (TREE_CODE (decl) == TYPE_DECL)
{
/* TYPE_DECLs are handled specially. Look at its type to decide
if this is a template instantiation. */
- tree type = TREE_TYPE (decl);
+ const tree type = TREE_TYPE (decl);
if (CLASS_TYPE_P (type) && CLASSTYPE_TEMPLATE_ID_P (type))
{
if (template_info != NULL)
/* For a templated TYPE_DECL, the template info is hanging
off the type. */
- *template_info = CLASSTYPE_TEMPLATE_INFO (type);
+ *template_info = TYPE_TEMPLATE_INFO (type);
return 1;
}
- }
+ }
else
{
/* Check if this is a primary template. */
/* Produce debugging output of current substitution candidates. */
static void
-dump_substitution_candidates ()
+dump_substitution_candidates (void)
{
unsigned i;
+ tree el;
fprintf (stderr, " ++ substitutions ");
- for (i = 0; i < VARRAY_ACTIVE_SIZE (G.substitutions); ++i)
+ for (i = 0; VEC_iterate (tree, G.substitutions, i, el); ++i)
{
- tree el = VARRAY_TREE (G.substitutions, i);
const char *name = "???";
if (i > 0)
else if (TYPE_NAME (el))
name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (el)));
fprintf (stderr, " S%d_ = ", i - 1);
- if (TYPE_P (el) &&
- (CP_TYPE_RESTRICT_P (el)
- || CP_TYPE_VOLATILE_P (el)
+ if (TYPE_P (el) &&
+ (CP_TYPE_RESTRICT_P (el)
+ || CP_TYPE_VOLATILE_P (el)
|| CP_TYPE_CONST_P (el)))
fprintf (stderr, "CV-");
- fprintf (stderr, "%s (%s at %p)\n",
+ fprintf (stderr, "%s (%s at %p)\n",
name, tree_code_name[TREE_CODE (el)], (void *) el);
}
}
/* Both decls and types can be substitution candidates, but sometimes
they refer to the same thing. For instance, a TYPE_DECL and
RECORD_TYPE for the same class refer to the same thing, and should
- be treated accordinginly in substitutions. This function returns a
+ be treated accordingly in substitutions. This function returns a
canonicalized tree node representing NODE that is used when adding
and substitution candidates and finding matches. */
static inline tree
-canonicalize_for_substitution (node)
- tree node;
+canonicalize_for_substitution (tree node)
{
/* For a TYPE_DECL, use the type instead. */
if (TREE_CODE (node) == TYPE_DECL)
the list of candidates. */
static void
-add_substitution (node)
- tree node;
+add_substitution (tree node)
{
tree c;
if (DEBUG_MANGLE)
- fprintf (stderr, " ++ add_substitution (%s at %10p)\n",
+ fprintf (stderr, " ++ add_substitution (%s at %10p)\n",
tree_code_name[TREE_CODE (node)], (void *) node);
/* Get the canonicalized substitution candidate for NODE. */
/* Make sure NODE isn't already a candidate. */
{
int i;
- for (i = VARRAY_ACTIVE_SIZE (G.substitutions); --i >= 0; )
+ tree candidate;
+
+ for (i = 0; VEC_iterate (tree, G.substitutions, i, candidate); i++)
{
- tree candidate = VARRAY_TREE (G.substitutions, i);
- if ((DECL_P (node)
- && node == candidate)
- || (TYPE_P (node)
- && TYPE_P (candidate)
- && same_type_p (node, candidate)))
- my_friendly_abort (20000524);
+ 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. */
- VARRAY_PUSH_TREE (G.substitutions, node);
+ VEC_safe_push (tree, gc, G.substitutions, node);
if (DEBUG_MANGLE)
dump_substitution_candidates ();
}
-/* Helper function for find_substitution. Returns non-zero if NODE,
+/* 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 (node, index)
- tree node;
- substitution_identifier_index_t index;
+static inline int
+is_std_substitution (const tree node,
+ const substitution_identifier_index_t index)
{
tree type = NULL;
tree decl = NULL;
type = node;
decl = TYPE_NAME (node);
}
- else
+ 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)
- && CLASSTYPE_TEMPLATE_INFO (type)
- && (DECL_NAME (CLASSTYPE_TI_TEMPLATE (type))
+ && TYPE_LANG_SPECIFIC (type)
+ && TYPE_TEMPLATE_INFO (type)
+ && (DECL_NAME (TYPE_TI_TEMPLATE (type))
== subst_identifiers[index]));
}
-/* Helper function for find_substitution. Returns non-zero if NODE,
+/* 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 (node, index)
- tree node;
- substitution_identifier_index_t index;
+is_std_substitution_char (const tree node,
+ const substitution_identifier_index_t index)
{
tree args;
/* Check NODE's name is ::std::identifier. */
return 0;
/* Figure out its template args. */
if (DECL_P (node))
- args = DECL_TI_ARGS (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
+ return
TREE_VEC_LENGTH (args) == 1
&& TREE_VEC_ELT (args, 0) == char_type_node;
}
First, check standard special-case substitutions.
- <substitution> ::= St
- # ::std
+ <substitution> ::= St
+ # ::std
- ::= Sa
+ ::= Sa
# ::std::allocator
- ::= Sb
- # ::std::basic_string
+ ::= Sb
+ # ::std::basic_string
- ::= Ss
- # ::std::basic_string<char,
+ ::= Ss
+ # ::std::basic_string<char,
::std::char_traits<char>,
::std::allocator<char> >
- ::= Si
- # ::std::basic_istream<char, ::std::char_traits<char> >
+ ::= Si
+ # ::std::basic_istream<char, ::std::char_traits<char> >
- ::= So
- # ::std::basic_ostream<char, ::std::char_traits<char> >
+ ::= So
+ # ::std::basic_ostream<char, ::std::char_traits<char> >
- ::= Sd
- # ::std::basic_iostream<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 non-zero. If none is found, just return zero. */
+ return nonzero. If none is found, just return zero. */
static int
-find_substitution (node)
- tree node;
+find_substitution (tree node)
{
int i;
- int size = VARRAY_ACTIVE_SIZE (G.substitutions);
+ const int size = VEC_length (tree, G.substitutions);
tree decl;
tree type;
type = TYPE_P (node) ? node : TREE_TYPE (node);
/* Check for std::allocator. */
- if (decl
+ if (decl
&& is_std_substitution (decl, SUBID_ALLOCATOR)
&& !CLASSTYPE_USE_TEMPLATE (TREE_TYPE (decl)))
{
{
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>,
+ /* 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
+ if (cp_type_quals (type) == TYPE_UNQUALIFIED
&& CLASSTYPE_USE_TEMPLATE (type))
{
tree args = CLASSTYPE_TI_ARGS (type);
/* Check for basic_{i,o,io}stream. */
if (TYPE_P (node)
- && CP_TYPE_QUALS (type) == TYPE_UNQUALIFIED
+ && cp_type_quals (type) == TYPE_UNQUALIFIED
&& CLASS_TYPE_P (type)
&& CLASSTYPE_USE_TEMPLATE (type)
&& CLASSTYPE_TEMPLATE_INFO (type) != NULL)
{
- /* First, check for the template
+ /* 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? */
- tree name = DECL_NAME (CLASSTYPE_TI_TEMPLATE (type));
- if (name == subst_identifiers[SUBID_BASIC_ISTREAM])
+ if (is_std_substitution (decl, SUBID_BASIC_ISTREAM))
{
write_string ("Si");
return 1;
}
/* Or basic_ostream? */
- else if (name == subst_identifiers[SUBID_BASIC_OSTREAM])
+ else if (is_std_substitution (decl, SUBID_BASIC_OSTREAM))
{
write_string ("So");
return 1;
}
/* Or basic_iostream? */
- else if (name == subst_identifiers[SUBID_BASIC_IOSTREAM])
+ else if (is_std_substitution (decl, SUBID_BASIC_IOSTREAM))
{
write_string ("Sd");
return 1;
}
/* Now check the list of available substitutions for this mangling
- operation. */
+ operation. */
for (i = 0; i < size; ++i)
{
- tree candidate = VARRAY_TREE (G.substitutions, 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
}
-/* <mangled-name> ::= _Z <encoding> */
+/* 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.
-static inline void
-write_mangled_name (decl)
- tree decl;
+ <mangled-name> ::= _Z <encoding> */
+
+static void
+write_mangled_name (const tree decl, bool top_level)
{
MANGLE_TRACE_TREE ("mangled-name", decl);
- if (DECL_LANG_SPECIFIC (decl) && DECL_EXTERN_C_FUNCTION_P (decl))
- /* 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." */
- write_source_name (DECL_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
- /* C++ name; needs to be mangled. */
{
+ 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* ");
}
}
::= <data name> */
static void
-write_encoding (decl)
- tree decl;
+write_encoding (const tree decl)
{
MANGLE_TRACE_TREE ("encoding", decl);
if (DECL_LANG_SPECIFIC (decl) && DECL_EXTERN_C_FUNCTION_P (decl))
{
- write_source_name (DECL_NAME (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);
+ 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))
- fn_type = get_mostly_instantiated_function_type (decl, NULL, NULL);
+ {
+ fn_type = get_mostly_instantiated_function_type (decl);
+ /* 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);
+ {
+ fn_type = TREE_TYPE (decl);
+ d = decl;
+ }
- write_bare_function_type (fn_type, decl_is_template_id (decl, NULL));
+ 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>
+ ::= <unscoped-template-name> <template-args>
::= <nested-name>
- ::= <local-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 (decl)
- tree decl;
+write_name (tree decl, const int ignore_local_scope)
{
tree context;
else
context = (DECL_CONTEXT (decl) == NULL) ? NULL : CP_DECL_CONTEXT (decl);
- /* Decls in :: or ::std scope are treated specially. */
- if (context == NULL
- || context == global_namespace
- || DECL_NAMESPACE_STD_P (context))
+ /* 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? */
/* Everything else gets an <unqualified-name>. */
write_unscoped_name (decl);
}
- /* Handle local names. */
- else if (TREE_CODE (context) == FUNCTION_DECL)
- write_local_name (context, decl);
- /* Other decls get a <nested-name> to encode their scope. */
else
- write_nested_name (decl);
+ {
+ /* 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:: */
+ ::= St <unqualified-name> # ::std:: */
static void
-write_unscoped_name (decl)
- tree decl;
+write_unscoped_name (const tree decl)
{
tree context = CP_DECL_CONTEXT (decl);
write_string ("St");
write_unqualified_name (decl);
}
- /* If not, it should be in the global namespace. */
- else if (context == global_namespace || context == NULL)
- write_unqualified_name (decl);
- else
- my_friendly_abort (20000521);
+ 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> */
+ ::= <substitution> */
static void
-write_unscoped_template_name (decl)
- tree decl;
+write_unscoped_template_name (const tree decl)
{
MANGLE_TRACE_TREE ("unscoped-template-name", decl);
/* Write the nested name, including CV-qualifiers, of DECL.
- <nested-name> ::= N [<CV-qualifiers>] <prefix> <component> E
- ::= N [<CV-qualifiers>] <template-prefix> <template-args> E
+ <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 (decl)
- tree decl;
+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
+ if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_NONSTATIC_MEMBER_FUNCTION_P (decl))
{
if (DECL_VOLATILE_MEMFUNC_P (decl))
write_template_prefix (decl);
write_template_args (TI_ARGS (template_info));
}
+ else if (TREE_CODE (TREE_TYPE (decl)) == TYPENAME_TYPE)
+ {
+ tree name = TYPENAME_TYPE_FULLNAME (TREE_TYPE (decl));
+ if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
+ {
+ write_template_prefix (decl);
+ write_template_args (TREE_OPERAND (name, 1));
+ }
+ else
+ {
+ write_prefix (CP_DECL_CONTEXT (decl));
+ write_unqualified_name (decl);
+ }
+ }
else
{
/* No, just use <prefix> */
write_prefix (DECL_CONTEXT (decl));
- write_component (decl);
+ write_unqualified_name (decl);
}
write_char ('E');
}
-/* <prefix> ::= <prefix> <component>
- ::= <template-prefix> <template-args>
+/* <prefix> ::= <prefix> <unqualified-name>
+ ::= <template-param>
+ ::= <template-prefix> <template-args>
::= # empty
::= <substitution> */
static void
-write_prefix (node)
- tree node;
+write_prefix (const tree node)
{
tree decl;
/* Non-NULL if NODE represents a template-id. */
return;
if (DECL_P (node))
- /* Node is a decl. */
{
+ /* 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. */
{
+ /* Node is a type. */
decl = TYPE_NAME (node);
if (CLASSTYPE_TEMPLATE_ID_P (node))
- template_info = CLASSTYPE_TEMPLATE_INFO (node);
+ template_info = TYPE_TEMPLATE_INFO (node);
}
- if (template_info != NULL)
+ /* 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 if (TREE_CODE (TREE_TYPE (decl)) == TYPENAME_TYPE)
+ {
+ tree name = TYPENAME_TYPE_FULLNAME (TREE_TYPE (decl));
+ if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
+ {
+ write_template_prefix (decl);
+ write_template_args (TREE_OPERAND (name, 1));
+ }
+ else
+ {
+ write_prefix (CP_DECL_CONTEXT (decl));
+ write_unqualified_name (decl);
+ }
+ }
else
/* Not templated. */
{
write_prefix (CP_DECL_CONTEXT (decl));
- write_component (decl);
+ write_unqualified_name (decl);
}
add_substitution (node);
}
/* <template-prefix> ::= <prefix> <template component>
- ::= <substitution> */
+ ::= <template-param>
+ ::= <substitution> */
static void
-write_template_prefix (node)
- tree node;
+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 templ;
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 if (CLASSTYPE_TEMPLATE_ID_P (type))
- template = CLASSTYPE_TI_TEMPLATE (type);
+ templ = TI_TEMPLATE (template_info);
+ else if (TREE_CODE (type) == TYPENAME_TYPE)
+ /* For a typename type, all we have is the name. */
+ templ = DECL_NAME (decl);
else
- /* Oops, not a template. */
- my_friendly_abort (20000524);
+ {
+ gcc_assert (CLASSTYPE_TEMPLATE_ID_P (type));
+
+ templ = TYPE_TI_TEMPLATE (type);
+ }
/* For a member template, though, the template name for the
innermost name must have all the outer template levels
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);
+ substitution = build_tree_list (context, templ);
else
- substitution = template;
+ substitution = templ;
if (find_substitution (substitution))
return;
- write_prefix (context);
- write_component (decl);
+ /* In G++ 3.2, the name of the template template parameter was used. */
+ if (TREE_TYPE (templ)
+ && TREE_CODE (TREE_TYPE (templ)) == TEMPLATE_TEMPLATE_PARM
+ && !abi_version_at_least (2))
+ G.need_abi_warning = true;
- add_substitution (substitution);
-}
-
-/* <component> ::= <unqualified-name>
- ::= <local-name> */
-
-static void
-write_component (decl)
- tree decl;
-{
- MANGLE_TRACE_TREE ("component", decl);
-
- switch (TREE_CODE (decl))
+ if (TREE_TYPE (templ)
+ && TREE_CODE (TREE_TYPE (templ)) == TEMPLATE_TEMPLATE_PARM
+ && abi_version_at_least (2))
+ write_template_param (TREE_TYPE (templ));
+ else
{
- case TEMPLATE_DECL:
- case NAMESPACE_DECL:
- case VAR_DECL:
- case TYPE_DECL:
- case FUNCTION_DECL:
- case FIELD_DECL:
- if (TREE_CODE (CP_DECL_CONTEXT (decl)) == FUNCTION_DECL)
- write_local_name (CP_DECL_CONTEXT (decl), decl);
- else
- write_unqualified_name (decl);
- break;
-
- default:
- my_friendly_abort (2000509);
+ 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.
+ mangled through special entry points.
<unqualified-name> ::= <operator-name>
- ::= <special-name>
- ::= <source-name> */
+ ::= <special-name>
+ ::= <source-name>
+ ::= <local-source-name>
+
+ <local-source-name> ::= L <source-name> <discriminator> */
static void
-write_unqualified_name (decl)
- tree decl;
+write_unqualified_name (const tree decl)
{
MANGLE_TRACE_TREE ("unqualified-name", 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_CONV_FN_P (decl))
+ else if (DECL_NAME (decl) == NULL_TREE)
{
- /* Conversion operator. Handle it right here.
- <operator> ::= cv <type> */
- write_string ("cv");
- write_type (TREE_TYPE (DECL_NAME (decl)));
+ gcc_assert (DECL_ASSEMBLER_NAME_SET_P (decl));
+ 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;
+ fn_type = get_mostly_instantiated_function_type (decl);
+ type = TREE_TYPE (fn_type);
+ }
+ else
+ type = DECL_CONV_FN_TYPE (decl);
+ write_conversion_operator_name (type);
}
else if (DECL_OVERLOADED_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));
}
-/* Non-termial <source-name>. IDENTIFIER is an IDENTIFIER_NODE.
+/* 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 (identifier)
- tree identifier;
+write_source_name (tree identifier)
{
MANGLE_TRACE_TREE ("source-name", 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 (number, unsigned_p, base)
- unsigned HOST_WIDE_INT number;
- int unsigned_p;
- unsigned int base;
+write_number (unsigned HOST_WIDE_INT number, const int unsigned_p,
+ const unsigned int base)
{
- static const char digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
- unsigned HOST_WIDE_INT n;
- unsigned HOST_WIDE_INT m = 1;
+ 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);
}
-
- /* Figure out how many digits there are. */
- n = number;
- while (n >= base)
- {
- n /= base;
- m *= base;
- }
+ 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. */
- /* Write them out. */
- while (m > 0)
+static inline void
+write_integer_cst (const tree cst)
+{
+ int sign = tree_int_cst_sgn (cst);
+
+ if (TREE_INT_CST_HIGH (cst) + (sign < 0))
{
- int digit = number / m;
- write_char (digits[digit]);
- number -= digit * m;
- m /= base;
+ /* 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);
- my_friendly_assert (number == 0, 20000407);
+ if (sign < 0)
+ {
+ write_char ('n');
+ low = -low;
+ }
+ write_unsigned_number (low);
+ }
}
-/* Write out an integeral CST in decimal. */
+/* Write out a floating-point literal.
-static inline void
-write_integer_cst (cst)
- tree cst;
+ "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 (tree_int_cst_sgn (cst) >= 0)
+ if (abi_version_at_least (2))
{
- if (TREE_INT_CST_HIGH (cst) != 0)
- sorry ("mangling very large integers");
- write_unsigned_number (TREE_INT_CST_LOW (cst));
+ 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
- write_signed_number (tree_low_cst (cst, 0));
+ {
+ /* 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 (identifier)
- char *identifier;
+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.
+ CTOR is a constructor FUNCTION_DECL.
<special-name> ::= C1 # complete object constructor
- ::= C2 # base object constructor
- ::= C3 # complete object allocating constructor
+ ::= C2 # base object constructor
+ ::= C3 # complete object allocating constructor
- Currently, allocating constructors are never used.
+ Currently, allocating constructors are never used.
- We also need to provide unique mangled names (which should never be
- exported) for the constructor that takes an in-charge parameter,
- and for a constructor whose name is the same as its class's name.
- We use "C*INTERNAL*" for these. */
+ 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 (ctor)
- tree ctor;
+write_special_name_constructor (const tree ctor)
{
- if (DECL_COMPLETE_CONSTRUCTOR_P (ctor))
- write_string ("C1");
- else if (DECL_BASE_CONSTRUCTOR_P (ctor))
+ if (DECL_BASE_CONSTRUCTOR_P (ctor))
write_string ("C2");
else
- write_string ("C*INTERNAL*");
+ {
+ 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 denstructor FUNCTION_DECL.
+ 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
+ ::= D1 # complete object (in-charge) destructor
+ ::= D2 # base object (not-in-charge) destructor
- We also need to provide unique mngled names for old-ABI
- destructors, sometimes. These should only be used internally. We
- use "D*INTERNAL*" for these. */
+ 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 (dtor)
- tree dtor;
+write_special_name_destructor (const tree dtor)
{
if (DECL_DELETING_DESTRUCTOR_P (dtor))
write_string ("D0");
- else if (DECL_COMPLETE_DESTRUCTOR_P (dtor))
- write_string ("D1");
else if (DECL_BASE_DESTRUCTOR_P (dtor))
write_string ("D2");
else
- /* Old-ABI destructor. */
- write_string ("D*INTERNAL*");
+ {
+ 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
entities with the same name in the same FUNCTION. */
static int
-discriminator_for_local_entity (entity)
- tree entity;
+discriminator_for_local_entity (tree entity)
{
- tree *type;
- int discriminator;
-
/* Assume this is the only local entity with this name. */
- discriminator = 0;
+ int discriminator = 0;
- /* For now, we don't discriminate amongst local variables. */
- if (TREE_CODE (entity) != TYPE_DECL)
- return 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 (type = &VARRAY_TREE (local_classes, 0); *type != entity; ++type)
- if (TYPE_IDENTIFIER (*type) == TYPE_IDENTIFIER (entity)
- && TYPE_CONTEXT (*type) == TYPE_CONTEXT (entity))
- ++discriminator;
+ /* 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 disciminator is the lexical ordinal of STRING among
+ FUNCTION. The discriminator is the lexical ordinal of STRING among
string literals used in FUNCTION. */
static int
-discriminator_for_string_literal (function, string)
- tree function ATTRIBUTE_UNUSED;
- tree string ATTRIBUTE_UNUSED;
+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>
+/* <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 (discriminator)
- int discriminator;
+write_discriminator (const int discriminator)
{
- /* If discriminator is zero, don't write anything. Otherwise... */
+ /* If discriminator is zero, don't write anything. Otherwise... */
if (discriminator > 0)
{
write_char ('_');
- /* The number is omitted for discriminator == 1. Beyond 1, the
- numbering starts at 0. */
- if (discriminator > 1)
- write_unsigned_number (discriminator - 2);
+ 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.
+ 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>] */
+ := Z <function encoding> E s [<discriminator>] */
static void
-write_local_name (function, entity)
- tree function;
- tree entity;
+write_local_name (const tree function, const tree local_entity,
+ const tree entity)
{
MANGLE_TRACE_TREE ("local-name", entity);
if (TREE_CODE (entity) == STRING_CST)
{
write_char ('s');
- write_discriminator (discriminator_for_string_literal (function,
+ write_discriminator (discriminator_for_string_literal (function,
entity));
}
else
{
- write_unqualified_name (entity);
- write_discriminator (discriminator_for_local_entity (entity));
+ /* 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>.
+/* 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) [not supported]
- ::= G <type> # imaginary (C 2000) [not supported]
- ::= U <source-name> <type> # vendor extended type qualifier
- [not supported]
+ ::= <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
+
+ C++0x extensions
+
+ <type> ::= RR <type> # rvalue reference-to
+ <type> ::= Dt <expression> # decltype of an id-expression or
+ # class member access
+ <type> ::= DT <expression> # decltype of an expression
TYPE is a type node. */
-static void
-write_type (type)
- tree type;
+static void
+write_type (tree type)
{
- /* This gets set to non-zero if TYPE turns out to be a (possibly
+ /* 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 uqualified types are substitution
+ 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
{
+ tree type_orig = type;
+
/* See through any typedefs. */
type = TYPE_MAIN_VARIANT (type);
- switch (TREE_CODE (type))
- {
- case VOID_TYPE:
- case BOOLEAN_TYPE:
- case INTEGER_TYPE: /* Includes wchar_t. */
- case REAL_TYPE:
- /* 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, 1);
- 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:
- /* We handle TYPENAME_TYPEs like ordinary nested names. */
- write_nested_name (TYPE_STUB_DECL (type));
- break;
+ if (TYPE_PTRMEM_P (type))
+ write_pointer_to_member_type (type);
+ else
+ {
+ /* Handle any target-specific fundamental types. */
+ const char *target_mangling
+ = targetm.mangle_type (type_orig);
- case ARRAY_TYPE:
- write_array_type (type);
- break;
+ if (target_mangling)
+ {
+ write_string (target_mangling);
+ /* Add substitutions for types other than fundamental
+ types. */
+ if (TREE_CODE (type) != VOID_TYPE
+ && TREE_CODE (type) != INTEGER_TYPE
+ && TREE_CODE (type) != REAL_TYPE
+ && TREE_CODE (type) != BOOLEAN_TYPE)
+ add_substitution (type);
+ return;
+ }
- case POINTER_TYPE:
- /* A pointer-to-member variable is represented by a POINTER_TYPE
- to an OFFSET_TYPE, so check for this first. */
- 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:
+ {
+ /* 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;
+ break;
- case REFERENCE_TYPE:
- write_char ('R');
- write_type (TREE_TYPE (type));
- break;
+ case REFERENCE_TYPE:
+ if (TYPE_REF_IS_RVALUE (type))
+ write_char('O');
+ else
+ write_char ('R');
+ write_type (TREE_TYPE (type));
+ break;
- case TEMPLATE_TYPE_PARM:
- case TEMPLATE_PARM_INDEX:
- write_template_param (type);
- break;
+ case TEMPLATE_TYPE_PARM:
+ case TEMPLATE_PARM_INDEX:
+ write_template_param (type);
+ break;
- case TEMPLATE_TEMPLATE_PARM:
- write_template_template_param (type);
- if (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (type))
- write_template_args
- (TI_ARGS (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (type)));
- break;
+ case TEMPLATE_TEMPLATE_PARM:
+ write_template_template_param (type);
+ break;
- case OFFSET_TYPE:
- write_pointer_to_member_type (build_pointer_type (type));
- break;
+ case BOUND_TEMPLATE_TEMPLATE_PARM:
+ write_template_template_param (type);
+ write_template_args
+ (TI_ARGS (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (type)));
+ break;
- default:
- my_friendly_abort (20000409);
+ case VECTOR_TYPE:
+ write_string ("U8__vector");
+ write_type (TREE_TYPE (type));
+ break;
+
+ case TYPE_PACK_EXPANSION:
+ write_string ("Dp");
+ write_type (PACK_EXPANSION_PATTERN (type));
+ break;
+
+ case DECLTYPE_TYPE:
+ write_char ('D');
+ if (DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (type))
+ write_char ('t');
+ else
+ write_char ('T');
+ write_expression (DECLTYPE_TYPE_EXPR (type));
+ write_char ('E');
+ break;
+
+ case TYPEOF_TYPE:
+ sorry ("mangling typeof, use decltype instead");
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
}
}
<CV-qualifiers> ::= [r] [V] [K] */
static int
-write_CV_qualifiers_for_type (type)
- tree type;
+write_CV_qualifiers_for_type (const tree type)
{
int num_qualifiers = 0;
"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) ..." */
+ 'V', 'r', and 'U' (farthest from the base type) ..."
- if (CP_TYPE_RESTRICT_P (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 (CP_TYPE_VOLATILE_P (type))
+ if (TYPE_QUALS (type) & TYPE_QUAL_VOLATILE)
{
write_char ('V');
++num_qualifiers;
}
- if (CP_TYPE_CONST_P (type))
+ 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 [not supported]
- ::= o # unsigned __int128 [not supported]
- ::= f # float
- ::= d # double
- ::= e # long double, __float80
- ::= g # __float128 [not supported] */
-
-static void
-write_builtin_type (type)
- tree type;
+/* 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)
{
+ if (TYPE_CANONICAL (type))
+ type = TYPE_CANONICAL (type);
+
switch (TREE_CODE (type))
{
case VOID_TYPE:
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. */
+ /* TYPE may still be wchar_t, char16_t, or char32_t, since that
+ isn't in integer_type_nodes. */
if (type == wchar_type_node)
write_char ('w');
+ else if (type == char16_type_node)
+ write_string ("Ds");
+ else if (type == char32_type_node)
+ write_string ("Di");
+ 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])
{
write_char (integer_type_codes[itk]);
break;
}
-
+
if (itk == itk_none)
- /* Couldn't find this type. */
- my_friendly_abort (20000408);
+ {
+ 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)
+ if (type == float_type_node
+ || type == java_float_type_node)
write_char ('f');
- else if (type == double_type_node)
+ 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
- my_friendly_abort (20000409);
+ gcc_unreachable ();
break;
default:
- my_friendly_abort (20000509);
+ gcc_unreachable ();
}
}
/* Non-terminal <function-type>. NODE is a FUNCTION_TYPE or
- METHOD_TYPE. If INCLUDE_RETURN_TYPE is non-zero, the return type
- is mangled before the parameter types.
+ METHOD_TYPE. The return type is mangled before the parameter
+ types.
<function-type> ::= F [Y] <bare-function-type> E */
static void
-write_function_type (type, include_return_type)
- tree type;
- int include_return_type;
+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" typedef void function_t();
function_t f; // f has C++ linkage, but its type is
- // `extern "C"'
+ // `extern "C"'
typedef void function_t();
extern "C" function_t f; // Vice versa.
See [dcl.link]. */
- write_bare_function_type (type, include_return_type);
+ write_bare_function_type (type, /*include_return_type_p=*/1,
+ /*decl=*/NULL);
write_char ('E');
}
-/* Non-terminal <bare-function-type>. NODE is a FUNCTION_DECL or a
- METHOD_TYPE. If INCLUDE_RETURN_TYPE is non-zero, the return value
- is mangled before the parameter types.
+/* 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> ::= </signature/ type>+ */
+ <bare-function-type> ::= [J]</signature/ type>+ */
static void
-write_bare_function_type (type, include_return_type_p)
- tree type;
- int include_return_type_p;
+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)
+ 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);
+ 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_LIST. If METHOD_P is non-zero, the function is
- considered a non-static method, and the this parameter is omitted. */
+ 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 (parm_list, method_p)
- tree parm_list;
- int method_p;
+write_method_parms (tree parm_types, const int method_p, const tree decl)
{
- tree first_parm;
+ 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.
+ this pointer.
"Member functions do not encode the type of their implicit this
- parameter." */
- if (method_p)
- parm_list = TREE_CHAIN (parm_list);
+ parameter."
- for (first_parm = parm_list;
- parm_list;
- parm_list = TREE_CHAIN (parm_list))
+ Similarly, there's no need to mangle artificial parameters, like
+ the VTT parameters for constructors and destructors. */
+ if (method_p)
{
- tree parm = TREE_VALUE (parm_list);
+ 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_list == first_parm)
+ 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. */
- my_friendly_assert (TREE_CHAIN (parm_list) == NULL, 20000523);
+ gcc_assert (TREE_CHAIN (parm_types) == NULL);
}
else
write_type (parm);
/* <class-enum-type> ::= <name> */
-static void
-write_class_enum_type (type)
- tree type;
+static void
+write_class_enum_type (const tree type)
{
- write_name (TYPE_NAME (type));
+ write_name (TYPE_NAME (type), /*ignore_local_scope=*/0);
}
/* Non-terminal <template-args>. ARGS is a TREE_VEC of template
<template-args> ::= I <template-arg>+ E */
static void
-write_template_args (args)
- tree args;
+write_template_args (tree args)
{
int i;
int length = TREE_VEC_LENGTH (args);
MANGLE_TRACE_TREE ("template-args", args);
- my_friendly_assert (length > 0, 20000422);
+ write_char ('I');
+
+ gcc_assert (length > 0);
if (TREE_CODE (TREE_VEC_ELT (args, 0)) == TREE_VEC)
{
args = TREE_VEC_ELT (args, length - 1);
length = TREE_VEC_LENGTH (args);
}
-
- write_char ('I');
for (i = 0; i < length; ++i)
write_template_arg (TREE_VEC_ELT (args, i));
+
write_char ('E');
}
+/* Write out the
+ <unqualified-name>
+ <unqualified-name> <template-args>
+ part of SCOPE_REF or COMPONENT_REF mangling. */
+
+static void
+write_member_name (tree member)
+{
+ if (TREE_CODE (member) == IDENTIFIER_NODE)
+ write_source_name (member);
+ else if (DECL_P (member))
+ {
+ /* G++ 3.2 incorrectly put out both the "sr" code and
+ the nested name of the qualified name. */
+ G.need_abi_warning = 1;
+ write_unqualified_name (member);
+ }
+ else if (TREE_CODE (member) == TEMPLATE_ID_EXPR)
+ {
+ tree name = TREE_OPERAND (member, 0);
+ if (TREE_CODE (name) == OVERLOAD)
+ name = OVL_FUNCTION (name);
+ write_member_name (name);
+ write_template_args (TREE_OPERAND (member, 1));
+ }
+ else
+ write_expression (member);
+}
+
/* <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 */
+ ::= L <type> <value number> E # literal
+ ::= L <mangled-name> E # external name
+ ::= st <type> # sizeof
+ ::= sr <type> <unqualified-name> # dependent name
+ ::= sr <type> <unqualified-name> <template-args> */
static void
-write_expression (expr)
- tree expr;
+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);
+ }
+
+ if (code == OVERLOAD)
+ {
+ expr = OVL_FUNCTION (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_nt (SCOPE_REF,
- PTRMEM_CST_CLASS (expr),
- PTRMEM_CST_MEMBER (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
+ /* Handle template parameters. */
+ if (code == TEMPLATE_TYPE_PARM
|| code == TEMPLATE_TEMPLATE_PARM
- || code == TEMPLATE_PARM_INDEX)
+ || code == BOUND_TEMPLATE_TEMPLATE_PARM
+ || code == TEMPLATE_PARM_INDEX)
write_template_param (expr);
/* Handle literals. */
- else if (TREE_CODE_CLASS (code) == 'c')
+ else if (TREE_CODE_CLASS (code) == tcc_constant
+ || (abi_version_at_least (2) && code == CONST_DECL))
write_template_arg_literal (expr);
+ else if (code == PARM_DECL)
+ {
+ /* A function parameter used under decltype in a late-specified
+ return type. Represented with a type placeholder. */
+ write_string ("sT");
+ write_type (non_reference (TREE_TYPE (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);
+ write_mangled_name (expr, false);
write_char ('E');
}
- else
+ else if (TREE_CODE (expr) == SIZEOF_EXPR
+ && TYPE_P (TREE_OPERAND (expr, 0)))
{
- int i;
+ 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 < MAX_TREE_CODES; ++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 if (code == COMPONENT_REF)
+ {
+ tree ob = TREE_OPERAND (expr, 0);
- /* 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)
+ if (TREE_CODE (ob) == ARROW_EXPR)
{
- expr = TREE_OPERAND (expr, 0);
- code = TREE_CODE (expr);
+ code = ARROW_EXPR;
+ ob = TREE_OPERAND (ob, 0);
}
+ write_string (operator_name_info[(int)code].mangled_name);
+ write_expression (ob);
+ write_member_name (TREE_OPERAND (expr, 1));
+ }
+ 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
code = TREE_CODE (expr);
}
-
+
/* If it wasn't any of those, recursively expand the expression. */
write_string (operator_name_info[(int) code].mangled_name);
- /* Handle pointers-to-members specially. */
- if (code == SCOPE_REF)
+ switch (code)
{
- write_type (TREE_OPERAND (expr, 0));
- if (TREE_CODE (TREE_OPERAND (expr, 1)) == IDENTIFIER_NODE)
- write_source_name (TREE_OPERAND (expr, 1));
+ case CALL_EXPR:
+ write_expression (CALL_EXPR_FN (expr));
+ for (i = 0; i < call_expr_nargs (expr); ++i)
+ write_expression (CALL_EXPR_ARG (expr, i));
+ write_char ('E');
+ break;
+
+ case CAST_EXPR:
+ write_type (TREE_TYPE (expr));
+ if (!TREE_OPERAND (expr, 0))
+ /* "T()" is mangled as "T(void)". */
+ write_char ('v');
+ else if (list_length (TREE_OPERAND (expr, 0)) > 1)
+ /* FIXME the above hack for T() needs to be replaced with
+ something more general. */
+ sorry ("mangling function-style cast with more than one argument");
else
- write_encoding (TREE_OPERAND (expr, 1));
+ 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));
+ write_member_name (TREE_OPERAND (expr, 1));
+ break;
+
+ default:
+ for (i = 0; i < TREE_OPERAND_LENGTH (expr); ++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);
+ }
}
- else
- for (i = 0; i < TREE_CODE_LENGTH (code); ++i)
- write_expression (TREE_OPERAND (expr, i));
}
}
-/* Literal subcase of non-terminal <template-arg>.
+/* 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. If floating-point arguments are accepted
- as an extension, their values should be encoded using a
- fixed-length lowercase hexadecimal string corresponding to the
- internal representation (IEEE on IA-64), high-order bytes first,
- without leading zeroes. For example: "Lfbff000000E" is -1.0f." */
+ encoded as 0, true as 1." */
static void
-write_template_arg_literal (value)
- tree value;
+write_template_arg_literal (const tree value)
{
- tree type = TREE_TYPE (value);
write_char ('L');
- write_type (type);
+ write_type (TREE_TYPE (value));
- if (TREE_CODE (value) == CONST_DECL)
- write_integer_cst (DECL_INITIAL (value));
- else if (TREE_CODE (value) == INTEGER_CST)
- {
- if (same_type_p (type, boolean_type_node))
- {
- if (value == boolean_false_node || integer_zerop (value))
- write_unsigned_number (0);
- else if (value == boolean_true_node)
- write_unsigned_number (1);
- else
- my_friendly_abort (20000412);
- }
- else
- write_integer_cst (value);
- }
- else if (TREE_CODE (value) == REAL_CST)
+ switch (TREE_CODE (value))
{
-#ifdef CROSS_COMPILE
- static int explained;
+ case CONST_DECL:
+ write_integer_cst (DECL_INITIAL (value));
+ break;
- if (!explained)
- {
- sorry ("real-valued template parameters when cross-compiling");
- explained = 1;
- }
-#else
- 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,
- 16);
-#endif
+ 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 ();
}
- else
- my_friendly_abort (20000412);
write_char ('E');
}
-/* Non-terminal <tempalate-arg>.
+/* Non-terminal <template-arg>.
- <template-arg> ::= <type> # type
- ::= L <type> </value/ number> E # literal
- ::= LZ <name> E # external name
- ::= X <expression> E # expression */
+ <template-arg> ::= <type> # type
+ ::= L <type> </value/ number> E # literal
+ ::= LZ <name> E # external name
+ ::= X <expression> E # expression */
static void
-write_template_arg (node)
- tree node;
+write_template_arg (tree node)
{
enum tree_code code = TREE_CODE (node);
MANGLE_TRACE_TREE ("template-arg", node);
- /* A template template paramter's argument list contains TREE_LIST
- nodes of which the value field is the the actual argument. */
+ /* 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 (TYPE_P (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 (ARGUMENT_PACK_P (node))
+ {
+ /* Expand the template argument pack. */
+ tree args = ARGUMENT_PACK_ARGS (node);
+ int i, length = TREE_VEC_LENGTH (args);
+ write_char ('I');
+ for (i = 0; i < length; ++i)
+ write_template_arg (TREE_VEC_ELT (args, i));
+ write_char ('E');
+ }
+ else 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');
- write_char ('Z');
+ /* 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 if (TREE_CODE_CLASS (code) == 'c' && code != PTRMEM_CST)
- write_template_arg_literal (node);
else
{
/* Template arguments may be expressions. */
::= <name>
::= <substitution> */
-void
-write_template_template_arg (tree decl)
+static void
+write_template_template_arg (const tree decl)
{
MANGLE_TRACE_TREE ("template-template-arg", decl);
if (find_substitution (decl))
return;
- write_name (decl);
+ write_name (decl, /*ignore_local_scope=*/0);
add_substitution (decl);
}
-/* Non-terminal <array-type>. TYPE is an ARRAY_TYPE.
+/* Non-terminal <array-type>. TYPE is an ARRAY_TYPE.
- <array-type> ::= A [</dimension/ number>] _ </element/ type>
- ::= A <expression> _ </element/ 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 (type)
- tree type;
+static void
+write_array_type (const tree type)
{
write_char ('A');
if (TYPE_DOMAIN (type))
write_unsigned_number (tree_low_cst (max, 1));
}
else
- write_expression (TREE_OPERAND (max, 0));
+ {
+ 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));
<pointer-to-member-type> ::= M </class/ type> </member/ type> */
static void
-write_pointer_to_member_type (type)
- tree type;
+write_pointer_to_member_type (const tree type)
{
write_char ('M');
write_type (TYPE_PTRMEM_CLASS_TYPE (type));
}
/* Non-terminal <template-param>. PARM is a TEMPLATE_TYPE_PARM,
- TEMPLATE_TEMPLATE_PARM, or a TEMPLATE_PARM_INDEX.
+ TEMPLATE_TEMPLATE_PARM, BOUND_TEMPLATE_TEMPLATE_PARM or a
+ TEMPLATE_PARM_INDEX.
<template-param> ::= T </parameter/ number> _ */
static void
-write_template_param (parm)
- tree parm;
+write_template_param (const tree parm)
{
int parm_index;
+ int parm_level;
+ tree parm_type = NULL_TREE;
MANGLE_TRACE_TREE ("template-parm", 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:
- my_friendly_abort (20000523);
+ gcc_unreachable ();
}
write_char ('T');
}
/* <template-template-param>
- ::= <template-param>
+ ::= <template-param>
::= <substitution> */
static void
-write_template_template_param (parm)
- tree parm;
+write_template_template_param (const tree parm)
{
- tree template = NULL_TREE;
+ tree templ = NULL_TREE;
/* PARM, a TEMPLATE_TEMPLATE_PARM, is an instantiation of the
template template parameter. The substitution candidate here is
only the template. */
- if (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (parm))
+ if (TREE_CODE (parm) == BOUND_TEMPLATE_TEMPLATE_PARM)
{
- template
+ templ
= TI_TEMPLATE (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (parm));
- if (find_substitution (template))
+ if (find_substitution (templ))
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);
+ if (templ)
+ add_substitution (templ);
}
-/* Non-terminal <substitution>.
+/* Non-terminal <substitution>.
<substitution> ::= S <seq-id> _
- ::= S_ */
+ ::= S_ */
static void
-write_substitution (seq_id)
- int seq_id;
+write_substitution (const int seq_id)
{
MANGLE_TRACE ("substitution", "");
write_char ('_');
}
-/* Start mangling a new name or type. */
+/* Start mangling ENTITY. */
static inline void
-start_mangling ()
+start_mangling (const tree entity)
{
- obstack_free (&G.name_obstack, obstack_base (&G.name_obstack));
+ G.entity = entity;
+ G.need_abi_warning = false;
+ obstack_free (&name_obstack, name_base);
+ mangle_obstack = &name_obstack;
+ name_base = obstack_alloc (&name_obstack, 0);
}
-/* Done with mangling. Return the generated mangled name. */
+/* Done with mangling. 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 ()
+static void
+finish_mangling_internal (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. */
- VARRAY_POP_ALL (G.substitutions);
+ VEC_truncate (tree, G.substitutions, 0);
/* Null-terminate the string. */
write_char ('\0');
+}
+
+
+/* Like finish_mangling_internal, but return the mangled string. */
+
+static inline const char *
+finish_mangling (const bool warn)
+{
+ finish_mangling_internal (warn);
+ return (const char *) obstack_finish (mangle_obstack);
+}
+
+/* Like finish_mangling_internal, but return an identifier. */
- return (const char *) obstack_base (&G.name_obstack);
+static tree
+finish_mangling_get_identifier (const bool warn)
+{
+ finish_mangling_internal (warn);
+ /* Don't obstack_finish here, and the next start_mangling will
+ remove the identifier. */
+ return get_identifier ((const char *) name_base);
}
/* Initialize data structures for mangling. */
void
-init_mangle ()
+init_mangle (void)
{
- gcc_obstack_init (&G.name_obstack);
- VARRAY_TREE_INIT (G.substitutions, 1, "mangling substitutions");
+ 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. */
/* Generate the mangled name of DECL. */
-static const char *
-mangle_decl_string (decl)
- tree decl;
+static tree
+mangle_decl_string (const tree decl)
{
- const char *result;
+ tree result;
- start_mangling ();
+ start_mangling (decl);
if (TREE_CODE (decl) == TYPE_DECL)
write_type (TREE_TYPE (decl));
else
- write_mangled_name (decl);
+ write_mangled_name (decl, true);
- result = finish_mangling ();
+ result = finish_mangling_get_identifier (/*warn=*/true);
if (DEBUG_MANGLE)
- fprintf (stderr, "mangle_decl_string = '%s'\n\n", result);
+ fprintf (stderr, "mangle_decl_string = '%s'\n\n",
+ IDENTIFIER_POINTER (result));
return result;
}
/* Create an identifier for the external mangled name of DECL. */
-tree
-mangle_decl (decl)
- tree decl;
+void
+mangle_decl (const tree decl)
{
- return get_identifier (mangle_decl_string (decl));
+ tree id = mangle_decl_string (decl);
+ id = targetm.mangle_decl_assembler_name (decl, id);
+ SET_DECL_ASSEMBLER_NAME (decl, id);
}
/* Generate the mangled representation of TYPE. */
const char *
-mangle_type_string (type)
- tree type;
+mangle_type_string (const tree type)
{
const char *result;
- start_mangling ();
+ start_mangling (type);
write_type (type);
- result = finish_mangling ();
+ 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 representation of TYPE. */
-
-tree
-mangle_type (type)
- tree type;
-{
- return get_identifier (mangle_type_string (type));
-}
-
/* 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 (type, code)
- tree type;
- const char *code;
+mangle_special_for_type (const tree type, const char *code)
{
- const char *result;
+ tree 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 ();
+ start_mangling (type);
/* Start the mangling. */
write_string ("_Z");
/* Add the type. */
write_type (type);
- result = finish_mangling ();
+ result = finish_mangling_get_identifier (/*warn=*/false);
if (DEBUG_MANGLE)
- fprintf (stderr, "mangle_special_for_type = %s\n\n", result);
+ fprintf (stderr, "mangle_special_for_type = %s\n\n",
+ IDENTIFIER_POINTER (result));
- return get_identifier (result);
+ return result;
}
/* Create an identifier for the mangled representation of the typeinfo
structure for TYPE. */
tree
-mangle_typeinfo_for_type (type)
- tree type;
+mangle_typeinfo_for_type (const tree type)
{
return mangle_special_for_type (type, "TI");
}
the mangled name of TYPE. */
tree
-mangle_typeinfo_string_for_type (type)
- tree type;
+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 (type)
- tree type;
+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 (type)
- tree type;
+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.
+ 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.
+ 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 (type, binfo)
- tree type;
- tree binfo;
+mangle_ctor_vtbl_for_type (const tree type, const tree binfo)
{
- const char *result;
+ tree result;
- start_mangling ();
+ start_mangling (type);
write_string ("_Z");
write_string ("TC");
write_char ('_');
write_type (BINFO_TYPE (binfo));
- result = finish_mangling ();
+ result = finish_mangling_get_identifier (/*warn=*/false);
if (DEBUG_MANGLE)
- fprintf (stderr, "mangle_ctor_vtbl_for_type = %s\n\n", result);
- return get_identifier (result);
+ fprintf (stderr, "mangle_ctor_vtbl_for_type = %s\n\n",
+ IDENTIFIER_POINTER (result));
+ return result;
}
-/* Return an identifier for the mangled name of a thunk to FN_DECL.
- OFFSET is the initial adjustment to this used to find the vptr. If
- VCALL_OFFSET is non-NULL, this is a virtual thunk, and it is the
- vtbl offset in bytes.
+/* Mangle a this pointer or result pointer adjustment.
- <special-name> ::= Th <offset number> _ <base encoding>
- ::= Tv <offset number> _ <vcall offset number> _
- <base encoding>
-*/
+ <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 (fn_decl, offset, vcall_offset)
- tree fn_decl;
- tree offset;
- tree vcall_offset;
+mangle_thunk (tree fn_decl, const int this_adjusting, tree fixed_offset,
+ tree virtual_offset)
{
- const char *result;
-
- start_mangling ();
+ tree result;
+
+ start_mangling (fn_decl);
write_string ("_Z");
- /* The <special-name> for virtual thunks is Tv, for non-virtual
- thunks Th. */
write_char ('T');
- if (vcall_offset != 0)
- write_char ('v');
- else
- write_char ('h');
-
- /* For either flavor, write the offset to this. */
- write_integer_cst (offset);
- write_char ('_');
- /* For a virtual thunk, add the vcall offset. */
- if (vcall_offset)
+ if (!this_adjusting)
{
- /* Virtual thunk. Write the vcall offset and base type name. */
- write_integer_cst (vcall_offset);
- write_char ('_');
+ /* 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 ();
+ result = finish_mangling_get_identifier (/*warn=*/false);
if (DEBUG_MANGLE)
- fprintf (stderr, "mangle_thunk = %s\n\n", result);
- return get_identifier (result);
+ fprintf (stderr, "mangle_thunk = %s\n\n", IDENTIFIER_POINTER (result));
+ return result;
}
-/* 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.
+/* This hash table maps TYPEs to the IDENTIFIER for a conversion
+ operator to TYPE. The nodes are IDENTIFIERs whose TREE_TYPE is the
+ TYPE. */
- For compatibility with existing conversion operator mechanisms,
- the mangled form is `__op<type>' where <type> is the mangled
- representation of TYPE.
+static GTY ((param_is (union tree_node))) htab_t conv_type_names;
- FIXME: Though identifiers with starting with __op are reserved for
- the implementation, it would eventually be nice to use inaccessible
- names for these operators. */
+/* Hash a node (VAL1) in the table. */
+
+static hashval_t
+hash_type (const void *val)
+{
+ return (hashval_t) TYPE_UID (TREE_TYPE ((const_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 ((const_tree) val1) == (const_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 (type)
- tree type;
+mangle_conv_op_name_for_type (const tree type)
{
+ void **slot;
tree identifier;
- /* Build the mangling for TYPE. */
- const char *mangled_type = mangle_type_string (type);
- /* Allocate a temporary buffer for the complete name. */
- char *op_name = (char *) xmalloc (strlen (OPERATOR_TYPENAME_FORMAT)
- + strlen (mangled_type) + 1);
- /* Assemble the mangling. */
- strcpy (op_name, OPERATOR_TYPENAME_FORMAT);
- strcat (op_name, mangled_type);
- /* Find or create an identifier. */
- identifier = get_identifier (op_name);
- /* Done with the temporary buffer. */
- free (op_name);
- /* Set bits on the identifier so we know later it's a conversion. */
- IDENTIFIER_OPNAME_P (identifier) = 1;
- IDENTIFIER_TYPENAME_P (identifier) = 1;
- /* Hang TYPE off the identifier so it can be found easily later when
- performing conversions. */
- TREE_TYPE (identifier) = type;
+ 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;
}
variable for indicated VARIABLE. */
tree
-mangle_guard_variable (variable)
- tree variable;
+mangle_guard_variable (const tree variable)
{
- start_mangling ();
+ start_mangling (variable);
write_string ("_ZGV");
- write_name (variable);
- return get_identifier (finish_mangling ());
+ 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 finish_mangling_get_identifier (/*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);
+ write_string ("_ZGR");
+ write_name (variable, /*ignore_local_scope=*/0);
+ return finish_mangling_get_identifier (/*warn=*/false);
+}
+\f
+
+/* 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"
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