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38e9ed495c
follow the consistent pattern of struct work_stuff pointer first, followed by pointer into string being demangled, followed by pointer to the string where the result is being stored, followed by other args. Also generally replace most variables of name "type" with "mangled" for consistency. They all pointed to the same string but half were one name and half the other. * cplus-dem.c (LONGERNAMES): Remove #ifndef's. * cplus-dem.c (demangle_qualified): Rewrite to clean up and allow use whenever a qualified name is being demangled. * cplus-dem.c (do_type): Qualified names are treated similarly to fundamental types, not as modifiers of fundamental types.
2281 lines
50 KiB
C
2281 lines
50 KiB
C
/* Demangler for GNU C++
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Copyright 1989, 1991 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.uucp)
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Rewritten by Fred Fish (fnf@cygnus.com) for ARM and Lucid demangling
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* This is for g++ 1.95.03 (November 13 version). */
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/* This file exports two functions; cplus_mangle_opname and cplus_demangle.
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This file imports xmalloc and xrealloc, which are like malloc and
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realloc except that they generate a fatal error if there is no
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available memory. */
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/* GDB-specific, FIXME. */
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#include "defs.h"
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#include "demangle.h"
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#include <ctype.h>
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#include <string.h>
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/* In order to allow a single demangler executable to demangle strings
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using various common values of CPLUS_MARKER, as well as any specific
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one set at compile time, we maintain a string containing all the
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commonly used ones, and check to see if the marker we are looking for
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is in that string. CPLUS_MARKER is usually '$' on systems where the
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assembler can deal with that. Where the assembler can't, it's usually
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'.' (but on many systems '.' is used for other things). We put the
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current defined CPLUS_MARKER first (which defaults to '$'), followed
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by the next most common value, followed by an explicit '$' in case
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the value of CPLUS_MARKER is not '$'.
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We could avoid this if we could just get g++ to tell us what the actual
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cplus marker character is as part of the debug information, perhaps by
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ensuring that it is the character that terminates the gcc<n>_compiled
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marker symbol (FIXME). */
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#if !defined (CPLUS_MARKER)
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#define CPLUS_MARKER '$'
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#endif
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static const char cplus_markers[] = { CPLUS_MARKER, '.', '$', '\0' };
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#ifndef __STDC__
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#define const
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#endif
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/* Stuff that is shared between sub-routines.
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* Using a shared structure allows cplus_demangle to be reentrant. */
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struct work_stuff
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{
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int options;
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char **typevec;
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int ntypes;
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int typevec_size;
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int constructor;
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int destructor;
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int static_type; /* A static member function */
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int const_type; /* A const member function */
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};
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#define PRINT_ANSI_QUALIFIERS (work -> options & DMGL_ANSI)
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#define PRINT_ARG_TYPES (work -> options & DMGL_PARAMS)
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static const struct optable
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{
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const char *in;
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const char *out;
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int flags;
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} optable[] = {
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"nw", " new", DMGL_ANSI, /* new (1.92, ansi) */
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"dl", " delete", DMGL_ANSI, /* new (1.92, ansi) */
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"new", " new", 0, /* old (1.91, and 1.x) */
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"delete", " delete", 0, /* old (1.91, and 1.x) */
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"as", "=", DMGL_ANSI, /* ansi */
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"ne", "!=", DMGL_ANSI, /* old, ansi */
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"eq", "==", DMGL_ANSI, /* old, ansi */
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"ge", ">=", DMGL_ANSI, /* old, ansi */
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"gt", ">", DMGL_ANSI, /* old, ansi */
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"le", "<=", DMGL_ANSI, /* old, ansi */
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"lt", "<", DMGL_ANSI, /* old, ansi */
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"plus", "+", 0, /* old */
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"pl", "+", DMGL_ANSI, /* ansi */
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"apl", "+=", DMGL_ANSI, /* ansi */
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"minus", "-", 0, /* old */
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"mi", "-", DMGL_ANSI, /* ansi */
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"ami", "-=", DMGL_ANSI, /* ansi */
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"mult", "*", 0, /* old */
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"ml", "*", DMGL_ANSI, /* ansi */
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"amu", "*=", DMGL_ANSI, /* ansi (ARM/Lucid) */
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"aml", "*=", DMGL_ANSI, /* ansi (GNU/g++) */
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"convert", "+", 0, /* old (unary +) */
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"negate", "-", 0, /* old (unary -) */
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"trunc_mod", "%", 0, /* old */
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"md", "%", DMGL_ANSI, /* ansi */
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"amd", "%=", DMGL_ANSI, /* ansi */
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"trunc_div", "/", 0, /* old */
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"dv", "/", DMGL_ANSI, /* ansi */
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"adv", "/=", DMGL_ANSI, /* ansi */
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"truth_andif", "&&", 0, /* old */
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"aa", "&&", DMGL_ANSI, /* ansi */
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"truth_orif", "||", 0, /* old */
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"oo", "||", DMGL_ANSI, /* ansi */
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"truth_not", "!", 0, /* old */
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"nt", "!", DMGL_ANSI, /* ansi */
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"postincrement","++", 0, /* old */
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"pp", "++", DMGL_ANSI, /* ansi */
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"postdecrement","--", 0, /* old */
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"mm", "--", DMGL_ANSI, /* ansi */
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"bit_ior", "|", 0, /* old */
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"or", "|", DMGL_ANSI, /* ansi */
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"aor", "|=", DMGL_ANSI, /* ansi */
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"bit_xor", "^", 0, /* old */
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"er", "^", DMGL_ANSI, /* ansi */
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"aer", "^=", DMGL_ANSI, /* ansi */
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"bit_and", "&", 0, /* old */
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"ad", "&", DMGL_ANSI, /* ansi */
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"aad", "&=", DMGL_ANSI, /* ansi */
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"bit_not", "~", 0, /* old */
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"co", "~", DMGL_ANSI, /* ansi */
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"call", "()", 0, /* old */
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"cl", "()", DMGL_ANSI, /* ansi */
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"alshift", "<<", 0, /* old */
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"ls", "<<", DMGL_ANSI, /* ansi */
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"als", "<<=", DMGL_ANSI, /* ansi */
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"arshift", ">>", 0, /* old */
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"rs", ">>", DMGL_ANSI, /* ansi */
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"ars", ">>=", DMGL_ANSI, /* ansi */
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"component", "->", 0, /* old */
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"pt", "->", DMGL_ANSI, /* ansi; Lucid C++ form */
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"rf", "->", DMGL_ANSI, /* ansi; ARM/GNU form */
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"indirect", "*", 0, /* old */
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"method_call", "->()", 0, /* old */
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"addr", "&", 0, /* old (unary &) */
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"array", "[]", 0, /* old */
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"vc", "[]", DMGL_ANSI, /* ansi */
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"compound", ", ", 0, /* old */
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"cm", ", ", DMGL_ANSI, /* ansi */
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"cond", "?:", 0, /* old */
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"cn", "?:", DMGL_ANSI, /* psuedo-ansi */
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"max", ">?", 0, /* old */
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"mx", ">?", DMGL_ANSI, /* psuedo-ansi */
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"min", "<?", 0, /* old */
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"mn", "<?", DMGL_ANSI, /* psuedo-ansi */
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"nop", "", 0, /* old (for operator=) */
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"rm", "->*", DMGL_ANSI, /* ansi */
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};
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typedef struct string /* Beware: these aren't required to be */
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{ /* '\0' terminated. */
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char *b; /* pointer to start of string */
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char *p; /* pointer after last character */
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char *e; /* pointer after end of allocated space */
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} string;
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#define STRING_EMPTY(str) ((str) -> b == (str) -> p)
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#define PREPEND_BLANK(str) {if (!STRING_EMPTY(str)) \
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string_prepend(str, " ");}
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#define APPEND_BLANK(str) {if (!STRING_EMPTY(str)) \
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string_append(str, " ");}
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#define ARM_VTABLE_STRING "__vtbl__" /* Lucid/cfront virtual table prefix */
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#define ARM_VTABLE_STRLEN 8 /* strlen (ARM_VTABLE_STRING) */
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/* Prototypes for local functions */
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static char *
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mop_up PARAMS ((struct work_stuff *, string *, int));
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#if 0
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static int
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demangle_method_args PARAMS ((struct work_stuff *work, const char **, string *));
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#endif
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static int
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demangle_template PARAMS ((struct work_stuff *work, const char **, string *));
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static int
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demangle_qualified PARAMS ((struct work_stuff *, const char **, string *,
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int));
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static int
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demangle_class PARAMS ((struct work_stuff *, const char **, string *));
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static int
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demangle_fund_type PARAMS ((struct work_stuff *, const char **, string *));
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static int
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demangle_signature PARAMS ((struct work_stuff *, const char **, string *));
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static int
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demangle_prefix PARAMS ((struct work_stuff *, const char **, string *));
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static int
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gnu_special PARAMS ((struct work_stuff *, const char **, string *));
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static int
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cfront_special PARAMS ((struct work_stuff *, const char **, string *));
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static void
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string_need PARAMS ((string *, int));
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static void
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string_delete PARAMS ((string *));
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static void
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string_init PARAMS ((string *));
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static void
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string_clear PARAMS ((string *));
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#if 0
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static int
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string_empty PARAMS ((string *));
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#endif
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static void
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string_append PARAMS ((string *, const char *));
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static void
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string_appends PARAMS ((string *, string *));
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static void
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string_appendn PARAMS ((string *, const char *, int));
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static void
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string_prepend PARAMS ((string *, const char *));
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static void
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string_prependn PARAMS ((string *, const char *, int));
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static int
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get_count PARAMS ((const char **, int *));
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static int
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consume_count PARAMS ((const char **));
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static int
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demangle_args PARAMS ((struct work_stuff *, const char **, string *));
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static int
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do_type PARAMS ((struct work_stuff *, const char **, string *));
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static int
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do_arg PARAMS ((struct work_stuff *, const char **, string *));
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static void
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demangle_function_name PARAMS ((struct work_stuff *, const char **, string *,
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const char *));
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static void
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remember_type PARAMS ((struct work_stuff *, const char *, int));
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static void
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forget_types PARAMS ((struct work_stuff *));
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#if 0
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static void
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string_prepends PARAMS ((string *, string *));
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#endif
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/* Translate count to integer, consuming tokens in the process.
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Conversion terminates on the first non-digit character. */
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static int
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consume_count (type)
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const char **type;
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{
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int count = 0;
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do
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{
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count *= 10;
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count += **type - '0';
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(*type)++;
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} while (isdigit (**type));
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return (count);
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}
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/* Takes operator name as e.g. "++" and returns mangled
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operator name (e.g. "postincrement_expr"), or NULL if not found.
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If OPTIONS & DMGL_ANSI == 1, return the ANSI name;
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if OPTIONS & DMGL_ANSI == 0, return the old GNU name. */
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char *
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cplus_mangle_opname (opname, options)
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char *opname;
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int options;
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{
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int i;
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int len;
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len = strlen (opname);
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for (i = 0; i < sizeof (optable) / sizeof (optable[0]); i++)
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{
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if (strlen (optable[i].out) == len
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&& (options & DMGL_ANSI) == (optable[i].flags & DMGL_ANSI)
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&& memcmp (optable[i].out, opname, len) == 0)
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return ((char *)optable[i].in);
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}
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return (0);
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}
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/* char *cplus_demangle (const char *name, int options)
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If NAME is a mangled function name produced by GNU C++, then
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a pointer to a malloced string giving a C++ representation
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of the name will be returned; otherwise NULL will be returned.
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It is the caller's responsibility to free the string which
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is returned.
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The OPTIONS arg may contain one or more of the following bits:
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DMGL_ANSI ANSI qualifiers such as `const' and `void' are
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included.
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DMGL_PARAMS Function parameters are included.
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For example,
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cplus_demangle ("foo__1Ai", DMGL_PARAMS) => "A::foo(int)"
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cplus_demangle ("foo__1Ai", DMGL_PARAMS | DMGL_ANSI) => "A::foo(int)"
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cplus_demangle ("foo__1Ai", 0) => "A::foo"
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cplus_demangle ("foo__1Afe", DMGL_PARAMS) => "A::foo(float,...)"
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cplus_demangle ("foo__1Afe", DMGL_PARAMS | DMGL_ANSI)=> "A::foo(float,...)"
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cplus_demangle ("foo__1Afe", 0) => "A::foo"
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Note that any leading underscores, or other such characters prepended by
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the compilation system, are presumed to have already been stripped from
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TYPE. */
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char *
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cplus_demangle (mangled, options)
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const char *mangled;
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int options;
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{
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string decl;
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int success = 0;
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struct work_stuff work[1];
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char *demangled = NULL;
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if ((mangled != NULL) && (*mangled != '\0'))
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{
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memset ((char *) work, 0, sizeof (work));
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work -> options = options;
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string_init (&decl);
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/* First check to see if gnu style demangling is active and if the
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string to be demangled contains a CPLUS_MARKER. If so, attempt to
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recognize one of the gnu special forms rather than looking for a
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standard prefix. In particular, don't worry about whether there
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is a "__" string in the mangled string. Consider "_$_5__foo" for
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example. */
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if ((AUTO_DEMANGLING || GNU_DEMANGLING)
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&& (strpbrk (mangled, cplus_markers)) != NULL)
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{
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success = gnu_special (work, &mangled, &decl);
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}
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else
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{
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success = demangle_prefix (work, &mangled, &decl);
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}
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if (success && (*mangled != '\0'))
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{
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success = demangle_signature (work, &mangled, &decl);
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}
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demangled = mop_up (work, &decl, success);
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}
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return (demangled);
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}
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static char *
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mop_up (work, declp, success)
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struct work_stuff *work;
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string *declp;
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int success;
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{
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int i;
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char *demangled = NULL;
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/* Discard the remembered types, if any. */
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forget_types (work);
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if (work -> typevec != NULL)
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{
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free ((char *) work -> typevec);
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}
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/* If demangling was successful, ensure that the demangled string is null
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terminated and return it. Otherwise, free the demangling decl. */
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if (!success)
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{
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string_delete (declp);
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}
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else
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{
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string_appendn (declp, "", 1);
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demangled = declp -> b;
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}
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return (demangled);
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}
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/*
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LOCAL FUNCTION
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|
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demangle_signature -- demangle the signature part of a mangled name
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SYNOPSIS
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|
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static int
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demangle_signature (struct work_stuff *work, const char **mangled,
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string *declp);
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DESCRIPTION
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Consume and demangle the signature portion of the mangled name.
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DECLP is the string where demangled output is being built. At
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entry it contains the demangled root name from the mangled name
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prefix. I.E. either a demangled operator name or the root function
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name. In some special cases, it may contain nothing.
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*MANGLED points to the current unconsumed location in the mangled
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name. As tokens are consumed and demangling is performed, the
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pointer is updated to continuously point at the next token to
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be consumed.
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Demangling GNU style mangled names is nasty because there is no
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explicit token that marks the start of the outermost function
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argument list.
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|
*/
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|
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static int
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demangle_signature (work, mangled, declp)
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|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *declp;
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|
{
|
|
int success = 1;
|
|
int func_done = 0;
|
|
int expect_func = 0;
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|
const char *oldmangled;
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|
|
|
while (success && (**mangled != '\0'))
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|
{
|
|
switch (**mangled)
|
|
{
|
|
case 'Q':
|
|
oldmangled = *mangled;
|
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success = demangle_qualified (work, mangled, declp, 1);
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|
if (success)
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{
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remember_type (work, oldmangled, *mangled - oldmangled);
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}
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if (AUTO_DEMANGLING || GNU_DEMANGLING)
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{
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expect_func = 1;
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}
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break;
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case 'S':
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/* Static member function */
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(*mangled)++;
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work -> static_type = 1;
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break;
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|
|
case 'C':
|
|
/* a const member function */
|
|
(*mangled)++;
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work -> const_type = 1;
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break;
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|
|
case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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oldmangled = *mangled;
|
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success = demangle_class (work, mangled, declp);
|
|
if (success)
|
|
{
|
|
remember_type (work, oldmangled, *mangled - oldmangled);
|
|
}
|
|
if (AUTO_DEMANGLING || GNU_DEMANGLING)
|
|
{
|
|
expect_func = 1;
|
|
}
|
|
break;
|
|
|
|
case 'F':
|
|
/* Function */
|
|
/* ARM style demangling includes a specific 'F' character after
|
|
the class name. For GNU style, it is just implied. So we can
|
|
safely just consume any 'F' at this point and be compatible
|
|
with either style. */
|
|
|
|
func_done = 1;
|
|
(*mangled)++;
|
|
|
|
/* For lucid/cfront style we have to forget any types we might
|
|
have remembered up to this point, since they were not argument
|
|
types. GNU style considers all types seen as available for
|
|
back references. See comment in demangle_args() */
|
|
|
|
if (LUCID_DEMANGLING || CFRONT_DEMANGLING)
|
|
{
|
|
forget_types (work);
|
|
}
|
|
success = demangle_args (work, mangled, declp);
|
|
break;
|
|
|
|
case 't':
|
|
/* Template */
|
|
success = demangle_template (work, mangled, declp);
|
|
break;
|
|
|
|
case '_':
|
|
/* At the outermost level, we cannot have a return type specified,
|
|
so if we run into another '_' at this point we are dealing with
|
|
a mangled name that is either bogus, or has been mangled by
|
|
some algorithm we don't know how to deal with. So just
|
|
reject the entire demangling. */
|
|
success = 0;
|
|
break;
|
|
|
|
default:
|
|
if (AUTO_DEMANGLING || GNU_DEMANGLING)
|
|
{
|
|
/* Assume we have stumbled onto the first outermost function
|
|
argument token, and start processing args. */
|
|
func_done = 1;
|
|
success = demangle_args (work, mangled, declp);
|
|
}
|
|
else
|
|
{
|
|
/* Non-GNU demanglers use a specific token to mark the start
|
|
of the outermost function argument tokens. Typically 'F',
|
|
for ARM-demangling, for example. So if we find something
|
|
we are not prepared for, it must be an error. */
|
|
success = 0;
|
|
}
|
|
break;
|
|
}
|
|
if (AUTO_DEMANGLING || GNU_DEMANGLING)
|
|
{
|
|
if (success && expect_func)
|
|
{
|
|
func_done = 1;
|
|
success = demangle_args (work, mangled, declp);
|
|
}
|
|
}
|
|
}
|
|
if (success && !func_done)
|
|
{
|
|
if (AUTO_DEMANGLING || GNU_DEMANGLING)
|
|
{
|
|
/* With GNU style demangling, bar__3foo is 'foo::bar(void)', and
|
|
bar__3fooi is 'foo::bar(int)'. We get here when we find the
|
|
first case, and need to ensure that the '(void)' gets added to
|
|
the current declp. Note that with ARM, the first case
|
|
represents the name of a static data member 'foo::bar',
|
|
which is in the current declp, so we leave it alone. */
|
|
success = demangle_args (work, mangled, declp);
|
|
}
|
|
}
|
|
if (success && work -> static_type && PRINT_ARG_TYPES)
|
|
{
|
|
string_append (declp, " static");
|
|
}
|
|
if (success && work -> const_type && PRINT_ARG_TYPES)
|
|
{
|
|
string_append (declp, " const");
|
|
}
|
|
return (success);
|
|
}
|
|
|
|
#if 0
|
|
|
|
static int
|
|
demangle_method_args (work, mangled, declp)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *declp;
|
|
{
|
|
int success = 0;
|
|
|
|
if (work -> static_type)
|
|
{
|
|
string_append (declp, *mangled + 1);
|
|
*mangled += strlen (*mangled);
|
|
success = 1;
|
|
}
|
|
else
|
|
{
|
|
success = demangle_args (work, mangled, declp);
|
|
}
|
|
return (success);
|
|
}
|
|
|
|
#endif
|
|
|
|
static int
|
|
demangle_template (work, mangled, declp)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *declp;
|
|
{
|
|
int i;
|
|
string tname;
|
|
string trawname;
|
|
int is_pointer;
|
|
int is_real;
|
|
int is_integral;
|
|
int r;
|
|
int need_comma = 0;
|
|
int success = 0;
|
|
int done;
|
|
const char *old_p;
|
|
int symbol_len;
|
|
string temp;
|
|
|
|
(*mangled)++;
|
|
string_init (&tname);
|
|
string_init (&trawname);
|
|
/* get template name */
|
|
if (!get_count (mangled, &r))
|
|
{
|
|
return (0);
|
|
}
|
|
string_appendn (&tname, *mangled, r);
|
|
string_appendn (&trawname, *mangled, r);
|
|
string_appendn (&trawname, "", 1);
|
|
*mangled += r;
|
|
string_append (&tname, "<");
|
|
/* get size of template parameter list */
|
|
if (!get_count (mangled, &r))
|
|
{
|
|
return (0);
|
|
}
|
|
for (i = 0; i < r; i++)
|
|
{
|
|
if (need_comma)
|
|
{
|
|
string_append (&tname, ", ");
|
|
}
|
|
/* Z for type parameters */
|
|
if (**mangled == 'Z')
|
|
{
|
|
(*mangled)++;
|
|
success = do_type (work, mangled, &temp);
|
|
string_appendn (&temp, "", 1);
|
|
if (success)
|
|
{
|
|
string_append (&tname, temp.b);
|
|
}
|
|
string_delete(&temp);
|
|
if (!success)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* otherwise, value parameter */
|
|
old_p = *mangled;
|
|
is_pointer = 0;
|
|
is_real = 0;
|
|
is_integral = 0;
|
|
done = 0;
|
|
success = do_type (work, mangled, &temp);
|
|
string_appendn (&temp, "", 1);
|
|
if (success)
|
|
{
|
|
string_append (&tname, temp.b);
|
|
}
|
|
string_delete(&temp);
|
|
if (!success)
|
|
{
|
|
break;
|
|
}
|
|
string_append (&tname, "=");
|
|
while (*old_p && !done)
|
|
{
|
|
switch (*old_p)
|
|
{
|
|
case 'P':
|
|
case 'R':
|
|
done = is_pointer = 1;
|
|
break;
|
|
case 'C': /* const */
|
|
case 'S': /* explicitly signed [char] */
|
|
case 'U': /* unsigned */
|
|
case 'V': /* volatile */
|
|
case 'F': /* function */
|
|
case 'M': /* member function */
|
|
case 'O': /* ??? */
|
|
old_p++;
|
|
continue;
|
|
case 'Q': /* repetition of following */
|
|
case 'T': /* remembered type */
|
|
abort ();
|
|
break;
|
|
case 'v': /* void */
|
|
abort ();
|
|
break;
|
|
case 'x': /* long long */
|
|
case 'l': /* long */
|
|
case 'i': /* int */
|
|
case 's': /* short */
|
|
case 'c': /* char */
|
|
done = is_integral = 1;
|
|
break;
|
|
case 'r': /* long double */
|
|
case 'd': /* double */
|
|
case 'f': /* float */
|
|
done = is_real = 1;
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
if (is_integral)
|
|
{
|
|
if (**mangled == 'm')
|
|
{
|
|
string_appendn (&tname, "-", 1);
|
|
(*mangled)++;
|
|
}
|
|
while (isdigit (**mangled))
|
|
{
|
|
string_appendn (&tname, *mangled, 1);
|
|
(*mangled)++;
|
|
}
|
|
}
|
|
else if (is_real)
|
|
{
|
|
if (**mangled == 'm')
|
|
{
|
|
string_appendn (&tname, "-", 1);
|
|
(*mangled)++;
|
|
}
|
|
while (isdigit (**mangled))
|
|
{
|
|
string_appendn (&tname, *mangled, 1);
|
|
(*mangled)++;
|
|
}
|
|
if (**mangled == '.') /* fraction */
|
|
{
|
|
string_appendn (&tname, ".", 1);
|
|
(*mangled)++;
|
|
while (isdigit (**mangled))
|
|
{
|
|
string_appendn (&tname, *mangled, 1);
|
|
(*mangled)++;
|
|
}
|
|
}
|
|
if (**mangled == 'e') /* exponent */
|
|
{
|
|
string_appendn (&tname, "e", 1);
|
|
(*mangled)++;
|
|
while (isdigit (**mangled))
|
|
{
|
|
string_appendn (&tname, *mangled, 1);
|
|
(*mangled)++;
|
|
}
|
|
}
|
|
}
|
|
else if (is_pointer)
|
|
{
|
|
if (!get_count (mangled, &symbol_len))
|
|
{
|
|
success = 0;
|
|
break;
|
|
}
|
|
string_appendn (&tname, *mangled, symbol_len);
|
|
*mangled += symbol_len;
|
|
}
|
|
}
|
|
need_comma = 1;
|
|
}
|
|
string_append (&tname, ">::");
|
|
if (work -> destructor)
|
|
{
|
|
string_append (&tname, "~");
|
|
}
|
|
if (work -> constructor || work -> destructor)
|
|
{
|
|
string_append (&tname, trawname.b);
|
|
}
|
|
string_delete(&trawname);
|
|
|
|
if (!success)
|
|
{
|
|
string_delete(&tname);
|
|
}
|
|
else
|
|
{
|
|
string_prepend (declp, tname.b);
|
|
string_delete (&tname);
|
|
|
|
if (work -> static_type)
|
|
{
|
|
string_append (declp, *mangled + 1);
|
|
*mangled += strlen (*mangled);
|
|
success = 1;
|
|
}
|
|
else
|
|
{
|
|
success = demangle_args (work, mangled, declp);
|
|
}
|
|
}
|
|
return (success);
|
|
}
|
|
|
|
/*
|
|
|
|
LOCAL FUNCTION
|
|
|
|
demangle_class -- demangle a mangled class sequence
|
|
|
|
SYNOPSIS
|
|
|
|
static int
|
|
demangle_class (struct work_stuff *work, const char **mangled,
|
|
strint *declp)
|
|
|
|
DESCRIPTION
|
|
|
|
DECLP points to the buffer into which demangling is being done.
|
|
|
|
*MANGLED points to the current token to be demangled. On input,
|
|
it points to a mangled class (I.E. "3foo", "13verylongclass", etc.)
|
|
On exit, it points to the next token after the mangled class on
|
|
success, or the first unconsumed token on failure.
|
|
|
|
If the CONSTRUCTOR or DESTRUCTOR flags are set in WORK, then
|
|
we are demangling a constructor or destructor. In this case
|
|
we prepend "class::class" or "class::~class" to DECLP.
|
|
|
|
Otherwise, we prepend "class::" to the current DECLP.
|
|
|
|
Reset the constructor/destructor flags once they have been
|
|
"consumed". This allows demangle_class to be called later during
|
|
the same demangling, to do normal class demangling.
|
|
|
|
Returns 1 if demangling is successful, 0 otherwise.
|
|
|
|
*/
|
|
|
|
static int
|
|
demangle_class (work, mangled, declp)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *declp;
|
|
{
|
|
int n;
|
|
int success = 0;
|
|
|
|
n = consume_count (mangled);
|
|
if (strlen (*mangled) >= n)
|
|
{
|
|
if (work -> constructor || work -> destructor)
|
|
{
|
|
string_prependn (declp, *mangled, n);
|
|
if (work -> destructor)
|
|
{
|
|
string_prepend (declp, "~");
|
|
}
|
|
work -> constructor = work -> destructor = 0;
|
|
}
|
|
string_prepend (declp, "::");
|
|
string_prependn (declp, *mangled, n);
|
|
*mangled += n;
|
|
success = 1;
|
|
}
|
|
return (success);
|
|
}
|
|
|
|
/*
|
|
|
|
LOCAL FUNCTION
|
|
|
|
demangle_prefix -- consume the mangled name prefix and find signature
|
|
|
|
SYNOPSIS
|
|
|
|
static int
|
|
demangle_prefix (struct work_stuff *work, const char **mangled,
|
|
string *declp);
|
|
|
|
DESCRIPTION
|
|
|
|
Consume and demangle the prefix of the mangled name.
|
|
|
|
DECLP points to the string buffer into which demangled output is
|
|
placed. On entry, the buffer is empty. On exit it contains
|
|
the root function name, the demangled operator name, or in some
|
|
special cases either nothing or the completely demangled result.
|
|
|
|
MANGLED points to the current pointer into the mangled name. As each
|
|
token of the mangled name is consumed, it is updated. Upon entry
|
|
the current mangled name pointer points to the first character of
|
|
the mangled name. Upon exit, it should point to the first character
|
|
of the signature if demangling was successful, or to the first
|
|
unconsumed character if demangling of the prefix was unsuccessful.
|
|
|
|
Returns 1 on success, 0 otherwise.
|
|
*/
|
|
|
|
static int
|
|
demangle_prefix (work, mangled, declp)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *declp;
|
|
{
|
|
int success = 1;
|
|
const char *scan;
|
|
int i;
|
|
|
|
scan = strstr (*mangled, "__");
|
|
|
|
if (scan != NULL)
|
|
{
|
|
/* We found a sequence of two or more '_', ensure that we start at
|
|
the last pair in the sequence. */
|
|
i = strspn (scan, "_");
|
|
if (i > 2)
|
|
{
|
|
scan += (i - 2);
|
|
}
|
|
}
|
|
|
|
if (scan == NULL)
|
|
{
|
|
success = 0;
|
|
}
|
|
else if (work -> static_type)
|
|
{
|
|
if (!isdigit (scan[0]) && (scan[0] != 't'))
|
|
{
|
|
success = 0;
|
|
}
|
|
}
|
|
else if ((scan == *mangled) && (isdigit (scan[2]) || (scan[2] == 'Q')))
|
|
{
|
|
/* A GNU style constructor starts with "__<digit>" or "__Q". */
|
|
work -> constructor = 1;
|
|
*mangled = scan + 2;
|
|
}
|
|
else if ((scan == *mangled) && !isdigit (scan[2]) && (scan[2] != 't'))
|
|
{
|
|
/* Mangled name starts with "__". Skip over any leading '_' characters,
|
|
then find the next "__" that separates the prefix from the signature.
|
|
*/
|
|
if (!(CFRONT_DEMANGLING || LUCID_DEMANGLING)
|
|
|| (cfront_special (work, mangled, declp) == 0))
|
|
{
|
|
while (*scan == '_')
|
|
{
|
|
scan++;
|
|
}
|
|
if ((scan = strstr (scan, "__")) == NULL || (*(scan + 2) == '\0'))
|
|
{
|
|
/* No separator (I.E. "__not_mangled"), or empty signature
|
|
(I.E. "__not_mangled_either__") */
|
|
success = 0;
|
|
}
|
|
else
|
|
{
|
|
demangle_function_name (work, mangled, declp, scan);
|
|
}
|
|
}
|
|
}
|
|
else if (*(scan + 2) != '\0')
|
|
{
|
|
/* Mangled name does not start with "__" but does have one somewhere
|
|
in there with non empty stuff after it. Looks like a global
|
|
function name. */
|
|
demangle_function_name (work, mangled, declp, scan);
|
|
}
|
|
else
|
|
{
|
|
/* Doesn't look like a mangled name */
|
|
success = 0;
|
|
}
|
|
return (success);
|
|
}
|
|
|
|
/*
|
|
|
|
LOCAL FUNCTION
|
|
|
|
gnu_special -- special handling of gnu mangled strings
|
|
|
|
SYNOPSIS
|
|
|
|
static int
|
|
gnu_special (struct work_stuff *work, const char **mangled,
|
|
string *declp);
|
|
|
|
|
|
DESCRIPTION
|
|
|
|
Process some special GNU style mangling forms that don't fit
|
|
the normal pattern. For example:
|
|
|
|
_$_3foo (destructor for class foo)
|
|
_vt$foo (foo virtual table)
|
|
_vt$foo$bar (foo::bar virtual table)
|
|
_3foo$varname (static data member)
|
|
*/
|
|
|
|
static int
|
|
gnu_special (work, mangled, declp)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *declp;
|
|
{
|
|
int n;
|
|
int success = 1;
|
|
const char *p;
|
|
|
|
if ((*mangled)[0] == '_'
|
|
&& strchr (cplus_markers, (*mangled)[1]) != NULL
|
|
&& (*mangled)[2] == '_')
|
|
{
|
|
/* Found a GNU style destructor, get past "_<CPLUS_MARKER>_" */
|
|
(*mangled) += 3;
|
|
work -> destructor = 1;
|
|
}
|
|
else if ((*mangled)[0] == '_'
|
|
&& (*mangled)[1] == 'v'
|
|
&& (*mangled)[2] == 't'
|
|
&& strchr (cplus_markers, (*mangled)[3]) != NULL)
|
|
{
|
|
/* Found a GNU style virtual table, get past "_vt<CPLUS_MARKER>"
|
|
and create the decl. Note that we consume the entire mangled
|
|
input string, which means that demangle_signature has no work
|
|
to do. */
|
|
(*mangled) += 4;
|
|
while (**mangled != '\0')
|
|
{
|
|
n = strcspn (*mangled, cplus_markers);
|
|
string_appendn (declp, *mangled, n);
|
|
(*mangled) += n;
|
|
if (**mangled != '\0')
|
|
{
|
|
string_append (declp, "::");
|
|
(*mangled)++;
|
|
}
|
|
}
|
|
string_append (declp, " virtual table");
|
|
}
|
|
else if ((*mangled)[0] == '_'
|
|
&& isdigit ((*mangled)[1])
|
|
&& (p = strpbrk (*mangled, cplus_markers)) != NULL)
|
|
{
|
|
/* static data member, "_3foo$varname" for example */
|
|
(*mangled)++;
|
|
p++;
|
|
n = consume_count (mangled);
|
|
string_appendn (declp, *mangled, n);
|
|
string_append (declp, "::");
|
|
n = strlen (p);
|
|
string_appendn (declp, p, n);
|
|
(*mangled) = p + n;
|
|
}
|
|
else
|
|
{
|
|
success = 0;
|
|
}
|
|
return (success);
|
|
}
|
|
|
|
/*
|
|
|
|
LOCAL FUNCTION
|
|
|
|
cfront_special -- special handling of cfront/lucid mangled strings
|
|
|
|
SYNOPSIS
|
|
|
|
static int
|
|
cfront_special (struct work_stuff *work, const char **mangled,
|
|
string *declp);
|
|
|
|
|
|
DESCRIPTION
|
|
|
|
Process some special cfront style mangling forms that don't fit
|
|
the normal pattern. For example:
|
|
|
|
__vtbl__3foo (foo virtual table)
|
|
__vtbl__3foo__3bar (bar::foo virtual table)
|
|
|
|
*/
|
|
|
|
static int
|
|
cfront_special (work, mangled, declp)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *declp;
|
|
{
|
|
int n;
|
|
int i;
|
|
int success = 1;
|
|
const char *p;
|
|
|
|
if (strncmp (*mangled, ARM_VTABLE_STRING, ARM_VTABLE_STRLEN) == 0)
|
|
{
|
|
/* Found a cfront style virtual table, get past ARM_VTABLE_STRING
|
|
and create the decl. Note that we consume the entire mangled
|
|
input string, which means that demangle_signature has no work
|
|
to do. */
|
|
(*mangled) += ARM_VTABLE_STRLEN;
|
|
while (**mangled != '\0')
|
|
{
|
|
n = consume_count (mangled);
|
|
string_prependn (declp, *mangled, n);
|
|
(*mangled) += n;
|
|
if ((*mangled)[0] == '_' && (*mangled)[1] == '_')
|
|
{
|
|
string_prepend (declp, "::");
|
|
(*mangled) += 2;
|
|
}
|
|
}
|
|
string_append (declp, " virtual table");
|
|
}
|
|
else
|
|
{
|
|
success = 0;
|
|
}
|
|
return (success);
|
|
}
|
|
|
|
/*
|
|
|
|
LOCAL FUNCTION
|
|
|
|
demangle_qualified -- demangle 'Q' qualified name strings
|
|
|
|
SYNOPSIS
|
|
|
|
static int
|
|
demangle_qualified (struct work_stuff *, const char *mangled,
|
|
string *result, int isfuncname);
|
|
|
|
DESCRIPTION
|
|
|
|
Demangle a qualified name, such as "Q25Outer5Inner" which is
|
|
the mangled form of "Outer::Inner". The demangled output is
|
|
appended to the result string.
|
|
|
|
If isfuncname is nonzero, then the qualified name we are building
|
|
is going to be used as a member function name, so if it is a
|
|
constructor or destructor function, append an appropriate
|
|
constructor or destructor name. I.E. for the above example,
|
|
the result for use as a constructor is "Outer::Inner::Inner"
|
|
and the result for use as a destructor is "Outer::Inner::~Inner".
|
|
|
|
BUGS
|
|
|
|
Numeric conversion is ASCII dependent (FIXME).
|
|
|
|
*/
|
|
|
|
static int
|
|
demangle_qualified (work, mangled, result, isfuncname)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *result;
|
|
int isfuncname;
|
|
{
|
|
int qualifiers;
|
|
int namelength;
|
|
int success = 0;
|
|
|
|
qualifiers = (*mangled)[1] - '0';
|
|
if (qualifiers > 0 && qualifiers < 10)
|
|
{
|
|
/* Assume success until we discover otherwise. Skip over the 'Q', the
|
|
qualifier count, and any '_' between the qualifier count and the
|
|
first name (cfront qualified names). */
|
|
|
|
success = 1;
|
|
if ((*mangled)[2] == '_')
|
|
{
|
|
(*mangled)++;
|
|
}
|
|
(*mangled) += 2;
|
|
|
|
|
|
/* Pick off the names and append them to the result string as they
|
|
are found, separated by '::'. */
|
|
|
|
while (qualifiers-- > 0)
|
|
{
|
|
namelength = consume_count (mangled);
|
|
if (strlen (*mangled) < namelength)
|
|
{
|
|
/* Simple sanity check failed */
|
|
success = 0;
|
|
break;
|
|
}
|
|
string_appendn (result, *mangled, namelength);
|
|
if (qualifiers > 0)
|
|
{
|
|
string_appendn (result, "::", 2);
|
|
}
|
|
*mangled += namelength;
|
|
}
|
|
|
|
/* If we are using the result as a function name, we need to append
|
|
the appropriate '::' separated constructor or destructor name.
|
|
We do this here because this is the most convenient place, where
|
|
we already have a pointer to the name and the length of the name. */
|
|
|
|
if (isfuncname && (work -> constructor || work -> destructor))
|
|
{
|
|
string_appendn (result, "::", 2);
|
|
if (work -> destructor)
|
|
{
|
|
string_append (result, "~");
|
|
}
|
|
string_appendn (result, (*mangled) - namelength, namelength);
|
|
}
|
|
}
|
|
return (success);
|
|
}
|
|
|
|
/*
|
|
|
|
LOCAL FUNCTION
|
|
|
|
get_count -- convert an ascii count to integer, consuming tokens
|
|
|
|
SYNOPSIS
|
|
|
|
static int
|
|
get_count (const char **type, int *count)
|
|
|
|
DESCRIPTION
|
|
|
|
Return 0 if no conversion is performed, 1 if a string is converted.
|
|
*/
|
|
|
|
static int
|
|
get_count (type, count)
|
|
const char **type;
|
|
int *count;
|
|
{
|
|
const char *p;
|
|
int n;
|
|
|
|
if (!isdigit (**type))
|
|
{
|
|
return (0);
|
|
}
|
|
else
|
|
{
|
|
*count = **type - '0';
|
|
(*type)++;
|
|
if (isdigit (**type))
|
|
{
|
|
p = *type;
|
|
n = *count;
|
|
do
|
|
{
|
|
n *= 10;
|
|
n += *p - '0';
|
|
p++;
|
|
}
|
|
while (isdigit (*p));
|
|
if (*p == '_')
|
|
{
|
|
*type = p + 1;
|
|
*count = n;
|
|
}
|
|
}
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/* result will be initialised here; it will be freed on failure */
|
|
|
|
static int
|
|
do_type (work, mangled, result)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *result;
|
|
{
|
|
int n;
|
|
int done;
|
|
int success;
|
|
string decl;
|
|
const char *remembered_type;
|
|
int constp;
|
|
int volatilep;
|
|
|
|
string_init (&decl);
|
|
string_init (result);
|
|
|
|
done = 0;
|
|
success = 1;
|
|
while (success && !done)
|
|
{
|
|
int member;
|
|
switch (**mangled)
|
|
{
|
|
|
|
/* A pointer type */
|
|
case 'P':
|
|
(*mangled)++;
|
|
string_prepend (&decl, "*");
|
|
break;
|
|
|
|
/* A reference type */
|
|
case 'R':
|
|
(*mangled)++;
|
|
string_prepend (&decl, "&");
|
|
break;
|
|
|
|
/* A back reference to a previously seen type */
|
|
case 'T':
|
|
(*mangled)++;
|
|
if (!get_count (mangled, &n) || n >= work -> ntypes)
|
|
{
|
|
success = 0;
|
|
}
|
|
else
|
|
{
|
|
remembered_type = work -> typevec[n];
|
|
mangled = &remembered_type;
|
|
}
|
|
break;
|
|
|
|
/* A function */
|
|
case 'F':
|
|
(*mangled)++;
|
|
if (!STRING_EMPTY (&decl) && decl.b[0] == '*')
|
|
{
|
|
string_prepend (&decl, "(");
|
|
string_append (&decl, ")");
|
|
}
|
|
/* After picking off the function args, we expect to either find the
|
|
function return type (preceded by an '_') or the end of the
|
|
string. */
|
|
if (!demangle_args (work, mangled, &decl)
|
|
|| (**mangled != '_' && **mangled != '\0'))
|
|
{
|
|
success = 0;
|
|
}
|
|
if (success && (**mangled == '_'))
|
|
{
|
|
(*mangled)++;
|
|
}
|
|
break;
|
|
|
|
case 'M':
|
|
case 'O':
|
|
{
|
|
constp = 0;
|
|
volatilep = 0;
|
|
|
|
member = **mangled == 'M';
|
|
(*mangled)++;
|
|
if (!isdigit (**mangled))
|
|
{
|
|
success = 0;
|
|
break;
|
|
}
|
|
n = consume_count (mangled);
|
|
if (strlen (*mangled) < n)
|
|
{
|
|
success = 0;
|
|
break;
|
|
}
|
|
string_append (&decl, ")");
|
|
string_prepend (&decl, "::");
|
|
string_prependn (&decl, *mangled, n);
|
|
string_prepend (&decl, "(");
|
|
*mangled += n;
|
|
if (member)
|
|
{
|
|
if (**mangled == 'C')
|
|
{
|
|
(*mangled)++;
|
|
constp = 1;
|
|
}
|
|
if (**mangled == 'V')
|
|
{
|
|
(*mangled)++;
|
|
volatilep = 1;
|
|
}
|
|
if (*(*mangled)++ != 'F')
|
|
{
|
|
success = 0;
|
|
break;
|
|
}
|
|
}
|
|
if ((member && !demangle_args (work, mangled, &decl))
|
|
|| **mangled != '_')
|
|
{
|
|
success = 0;
|
|
break;
|
|
}
|
|
(*mangled)++;
|
|
if (! PRINT_ANSI_QUALIFIERS)
|
|
{
|
|
break;
|
|
}
|
|
if (constp)
|
|
{
|
|
APPEND_BLANK (&decl);
|
|
string_append (&decl, "const");
|
|
}
|
|
if (volatilep)
|
|
{
|
|
APPEND_BLANK (&decl);
|
|
string_append (&decl, "volatile");
|
|
}
|
|
break;
|
|
}
|
|
|
|
case 'C':
|
|
if ((*mangled)[1] == 'P')
|
|
{
|
|
(*mangled)++;
|
|
if (PRINT_ANSI_QUALIFIERS)
|
|
{
|
|
if (!STRING_EMPTY (&decl))
|
|
{
|
|
string_prepend (&decl, " ");
|
|
}
|
|
string_prepend (&decl, "const");
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* fall through */
|
|
default:
|
|
done = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
switch (**mangled)
|
|
{
|
|
/* A qualified name, such as "Outer::Inner". */
|
|
case 'Q':
|
|
success = demangle_qualified (work, mangled, result, 0);
|
|
break;
|
|
|
|
default:
|
|
success = demangle_fund_type (work, mangled, result);
|
|
break;
|
|
}
|
|
|
|
if (success)
|
|
{
|
|
if (!STRING_EMPTY (&decl))
|
|
{
|
|
string_append (result, " ");
|
|
string_appends (result, &decl);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
string_delete (result);
|
|
}
|
|
string_delete (&decl);
|
|
return (success);
|
|
}
|
|
|
|
/* Given a pointer to a type string that represents a fundamental type
|
|
argument (int, long, unsigned int, etc) in TYPE, a pointer to the
|
|
string in which the demangled output is being built in RESULT, and
|
|
the WORK structure, decode the types and add them to the result.
|
|
|
|
For example:
|
|
|
|
"Ci" => "const int"
|
|
"Sl" => "signed long"
|
|
"CUs" => "const unsigned short"
|
|
|
|
*/
|
|
|
|
static int
|
|
demangle_fund_type (work, mangled, result)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *result;
|
|
{
|
|
int done = 0;
|
|
int success = 1;
|
|
int n;
|
|
|
|
/* First pick off any type qualifiers. There can be more than one. */
|
|
|
|
while (!done)
|
|
{
|
|
switch (**mangled)
|
|
{
|
|
case 'C':
|
|
(*mangled)++;
|
|
if (PRINT_ANSI_QUALIFIERS)
|
|
{
|
|
APPEND_BLANK (result);
|
|
string_append (result, "const");
|
|
}
|
|
break;
|
|
case 'U':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "unsigned");
|
|
break;
|
|
case 'S': /* signed char only */
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "signed");
|
|
break;
|
|
case 'V':
|
|
(*mangled)++;
|
|
if (PRINT_ANSI_QUALIFIERS)
|
|
{
|
|
APPEND_BLANK (result);
|
|
string_append (result, "volatile");
|
|
}
|
|
break;
|
|
default:
|
|
done = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Now pick off the fundamental type. There can be only one. */
|
|
|
|
switch (**mangled)
|
|
{
|
|
case '\0':
|
|
case '_':
|
|
break;
|
|
case 'v':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "void");
|
|
break;
|
|
case 'x':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "long long");
|
|
break;
|
|
case 'l':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "long");
|
|
break;
|
|
case 'i':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "int");
|
|
break;
|
|
case 's':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "short");
|
|
break;
|
|
case 'c':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "char");
|
|
break;
|
|
case 'r':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "long double");
|
|
break;
|
|
case 'd':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "double");
|
|
break;
|
|
case 'f':
|
|
(*mangled)++;
|
|
APPEND_BLANK (result);
|
|
string_append (result, "float");
|
|
break;
|
|
case 'G':
|
|
(*mangled)++;
|
|
if (!isdigit (**mangled))
|
|
{
|
|
success = 0;
|
|
break;
|
|
}
|
|
/* fall through */
|
|
/* An explicit type, such as "6mytype" or "7integer" */
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
n = consume_count (mangled);
|
|
if (strlen (*mangled) < n)
|
|
{
|
|
success = 0;
|
|
break;
|
|
}
|
|
APPEND_BLANK (result);
|
|
string_appendn (result, *mangled, n);
|
|
*mangled += n;
|
|
break;
|
|
default:
|
|
success = 0;
|
|
break;
|
|
}
|
|
|
|
return (success);
|
|
}
|
|
|
|
/* `result' will be initialized in do_type; it will be freed on failure */
|
|
|
|
static int
|
|
do_arg (work, mangled, result)
|
|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *result;
|
|
{
|
|
const char *start = *mangled;
|
|
|
|
if (!do_type (work, mangled, result))
|
|
{
|
|
return (0);
|
|
}
|
|
else
|
|
{
|
|
remember_type (work, start, *mangled - start);
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
remember_type (work, start, len)
|
|
struct work_stuff *work;
|
|
const char *start;
|
|
int len;
|
|
{
|
|
char *tem;
|
|
|
|
if (work -> ntypes >= work -> typevec_size)
|
|
{
|
|
if (work -> typevec_size == 0)
|
|
{
|
|
work -> typevec_size = 3;
|
|
work -> typevec =
|
|
(char **) xmalloc (sizeof (char *) * work -> typevec_size);
|
|
}
|
|
else
|
|
{
|
|
work -> typevec_size *= 2;
|
|
work -> typevec =
|
|
(char **) xrealloc ((char *)work -> typevec,
|
|
sizeof (char *) * work -> typevec_size);
|
|
}
|
|
}
|
|
tem = (char *) xmalloc (len + 1);
|
|
memcpy (tem, start, len);
|
|
tem[len] = '\0';
|
|
work -> typevec[work -> ntypes++] = tem;
|
|
}
|
|
|
|
/* Forget the remembered types, but not the type vector itself. */
|
|
|
|
static void
|
|
forget_types (work)
|
|
struct work_stuff *work;
|
|
{
|
|
int i;
|
|
|
|
while (work -> ntypes > 0)
|
|
{
|
|
i = --(work -> ntypes);
|
|
if (work -> typevec[i] != NULL)
|
|
{
|
|
free (work -> typevec[i]);
|
|
work -> typevec[i] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Process the argument list part of the signature, after any class spec
|
|
has been consumed, as well as the first 'F' character (if any). For
|
|
example:
|
|
|
|
"__als__3fooRT0" => process "RT0"
|
|
"complexfunc5__FPFPc_PFl_i" => process "PFPc_PFl_i"
|
|
|
|
DECLP must be already initialised, usually non-empty. It won't be freed
|
|
on failure.
|
|
|
|
Note that g++ differs significantly from cfront and lucid style mangling
|
|
with regards to references to previously seen types. For example, given
|
|
the source fragment:
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|
|
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class foo {
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public:
|
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foo::foo (int, foo &ia, int, foo &ib, int, foo &ic);
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};
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foo::foo (int, foo &ia, int, foo &ib, int, foo &ic) { ia = ib = ic; }
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void foo (int, foo &ia, int, foo &ib, int, foo &ic) { ia = ib = ic; }
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g++ produces the names:
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__3fooiRT0iT2iT2
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foo__FiR3fooiT1iT1
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while lcc (and presumably cfront as well) produces:
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foo__FiR3fooT1T2T1T2
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__ct__3fooFiR3fooT1T2T1T2
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Note that g++ bases it's type numbers starting at zero and counts all
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previously seen types, while lucid/cfront bases it's type numbers starting
|
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at one and only considers types after it has seen the 'F' character
|
|
indicating the start of the function args. For lucid/cfront style, we
|
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account for this difference by discarding any previously seen types when
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we see the 'F' character, and subtracting one from the type number
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reference.
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*/
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static int
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demangle_args (work, mangled, declp)
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struct work_stuff *work;
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const char **mangled;
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string *declp;
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{
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string arg;
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int need_comma = 0;
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int r;
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int t;
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const char *tem;
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char temptype;
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if (PRINT_ARG_TYPES)
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{
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string_append (declp, "(");
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if (**mangled == '\0')
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{
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string_append (declp, "void");
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}
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}
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while (**mangled != '_' && **mangled != '\0' && **mangled != 'e')
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{
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if ((**mangled == 'N') || (**mangled == 'T'))
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|
{
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temptype = *(*mangled)++;
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if (temptype == 'N')
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{
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if (!get_count (mangled, &r))
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|
{
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return (0);
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}
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}
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else
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{
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r = 1;
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}
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if (!get_count (mangled, &t))
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{
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return (0);
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}
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if (LUCID_DEMANGLING || CFRONT_DEMANGLING)
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|
{
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t--;
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}
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/* Validate the type index. Protect against illegal indices from
|
|
malformed type strings. */
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if ((t < 0) || (t >= work -> ntypes))
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{
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return (0);
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}
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while (--r >= 0)
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{
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tem = work -> typevec[t];
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if (need_comma && PRINT_ARG_TYPES)
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{
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string_append (declp, ", ");
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}
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if (!do_arg (work, &tem, &arg))
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{
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return (0);
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}
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if (PRINT_ARG_TYPES)
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{
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string_appends (declp, &arg);
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}
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string_delete (&arg);
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need_comma = 1;
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}
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}
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else
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|
{
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if (need_comma & PRINT_ARG_TYPES)
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|
{
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string_append (declp, ", ");
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}
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if (!do_arg (work, mangled, &arg))
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|
{
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return (0);
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}
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if (PRINT_ARG_TYPES)
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|
{
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string_appends (declp, &arg);
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|
}
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string_delete (&arg);
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need_comma = 1;
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|
}
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}
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|
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if (**mangled == 'e')
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|
{
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|
(*mangled)++;
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if (PRINT_ARG_TYPES)
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|
{
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if (need_comma)
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|
{
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string_append (declp, ",");
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}
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string_append (declp, "...");
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}
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}
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|
|
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if (PRINT_ARG_TYPES)
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|
{
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string_append (declp, ")");
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}
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return (1);
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}
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|
|
|
static void
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|
demangle_function_name (work, mangled, declp, scan)
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|
struct work_stuff *work;
|
|
const char **mangled;
|
|
string *declp;
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|
const char *scan;
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|
{
|
|
int i;
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|
int len;
|
|
string type;
|
|
const char *tem;
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|
|
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string_appendn (declp, (*mangled), scan - (*mangled));
|
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string_need (declp, 1);
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|
*(declp -> p) = '\0';
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|
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/* Consume the function name, including the "__" separating the name
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from the signature. We are guaranteed that SCAN points to the
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|
separator. */
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|
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(*mangled) = scan + 2;
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|
|
|
if (LUCID_DEMANGLING || CFRONT_DEMANGLING)
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|
{
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|
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|
/* See if we have an ARM style constructor or destructor operator.
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|
If so, then just record it, clear the decl, and return.
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|
We can't build the actual constructor/destructor decl until later,
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|
when we recover the class name from the signature. */
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|
|
if (strcmp (declp -> b, "__ct") == 0)
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|
{
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|
work -> constructor = 1;
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|
string_clear (declp);
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|
return;
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|
}
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|
else if (strcmp (declp -> b, "__dt") == 0)
|
|
{
|
|
work -> destructor = 1;
|
|
string_clear (declp);
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|
return;
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|
}
|
|
}
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|
|
if (declp->p - declp->b >= 3
|
|
&& declp->b[0] == 'o'
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|
&& declp->b[1] == 'p'
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|
&& strchr (cplus_markers, declp->b[2]) != NULL)
|
|
{
|
|
/* see if it's an assignment expression */
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|
if (declp->p - declp->b >= 10 /* op$assign_ */
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|
&& memcmp (declp->b + 3, "assign_", 7) == 0)
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|
{
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|
for (i = 0; i < sizeof (optable) / sizeof (optable[0]); i++)
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|
{
|
|
len = declp->p - declp->b - 10;
|
|
if (strlen (optable[i].in) == len
|
|
&& memcmp (optable[i].in, declp->b + 10, len) == 0)
|
|
{
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|
string_clear (declp);
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|
string_append (declp, "operator");
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|
string_append (declp, optable[i].out);
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|
string_append (declp, "=");
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|
break;
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|
}
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|
}
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|
}
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|
else
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|
{
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|
for (i = 0; i < sizeof (optable) / sizeof (optable[0]); i++)
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|
{
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|
int len = declp->p - declp->b - 3;
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|
if (strlen (optable[i].in) == len
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|
&& memcmp (optable[i].in, declp->b + 3, len) == 0)
|
|
{
|
|
string_clear (declp);
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|
string_append (declp, "operator");
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|
string_append (declp, optable[i].out);
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|
break;
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|
}
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|
}
|
|
}
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|
}
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|
else if (declp->p - declp->b >= 5 && memcmp (declp->b, "type$", 5) == 0)
|
|
{
|
|
/* type conversion operator */
|
|
tem = declp->b + 5;
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|
if (do_type (work, &tem, &type))
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|
{
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|
string_clear (declp);
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|
string_append (declp, "operator ");
|
|
string_appends (declp, &type);
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|
string_delete (&type);
|
|
}
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|
}
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|
else if (declp->b[2] == 'o' && declp->b[3] == 'p')
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|
{
|
|
/* ANSI. */
|
|
/* type conversion operator. */
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|
tem = declp->b + 4;
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|
if (do_type (work, &tem, &type))
|
|
{
|
|
string_clear (declp);
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|
string_append (declp, "operator ");
|
|
string_appends (declp, &type);
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|
string_delete (&type);
|
|
}
|
|
}
|
|
else if (declp->b[0] == '_' && declp->b[1] == '_'
|
|
&& declp->b[2] >= 'a' && declp->b[2] <= 'z'
|
|
&& declp->b[3] >= 'a' && declp->b[3] <= 'z')
|
|
{
|
|
if (declp->b[4] == '\0')
|
|
{
|
|
/* Operator. */
|
|
for (i = 0; i < sizeof (optable) / sizeof (optable[0]); i++)
|
|
{
|
|
if (strlen (optable[i].in) == 2
|
|
&& memcmp (optable[i].in, declp->b + 2, 2) == 0)
|
|
{
|
|
string_clear (declp);
|
|
string_append (declp, "operator");
|
|
string_append (declp, optable[i].out);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (declp->b[2] == 'a' && declp->b[5] == '\0')
|
|
{
|
|
/* Assignment. */
|
|
for (i = 0; i < sizeof (optable) / sizeof (optable[0]); i++)
|
|
{
|
|
if (strlen (optable[i].in) == 3
|
|
&& memcmp (optable[i].in, declp->b + 2, 3) == 0)
|
|
{
|
|
string_clear (declp);
|
|
string_append (declp, "operator");
|
|
string_append (declp, optable[i].out);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* a mini string-handling package */
|
|
|
|
static void
|
|
string_need (s, n)
|
|
string *s;
|
|
int n;
|
|
{
|
|
int tem;
|
|
|
|
if (s->b == NULL)
|
|
{
|
|
if (n < 32)
|
|
{
|
|
n = 32;
|
|
}
|
|
s->p = s->b = (char *) xmalloc (n);
|
|
s->e = s->b + n;
|
|
}
|
|
else if (s->e - s->p < n)
|
|
{
|
|
tem = s->p - s->b;
|
|
n += tem;
|
|
n *= 2;
|
|
s->b = (char *) xrealloc (s->b, n);
|
|
s->p = s->b + tem;
|
|
s->e = s->b + n;
|
|
}
|
|
}
|
|
|
|
static void
|
|
string_delete (s)
|
|
string *s;
|
|
{
|
|
if (s->b != NULL)
|
|
{
|
|
free (s->b);
|
|
s->b = s->e = s->p = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
string_init (s)
|
|
string *s;
|
|
{
|
|
s->b = s->p = s->e = NULL;
|
|
}
|
|
|
|
static void
|
|
string_clear (s)
|
|
string *s;
|
|
{
|
|
s->p = s->b;
|
|
}
|
|
|
|
#if 0
|
|
|
|
static int
|
|
string_empty (s)
|
|
string *s;
|
|
{
|
|
return (s->b == s->p);
|
|
}
|
|
|
|
#endif
|
|
|
|
static void
|
|
string_append (p, s)
|
|
string *p;
|
|
const char *s;
|
|
{
|
|
int n;
|
|
if (s == NULL || *s == '\0')
|
|
return;
|
|
n = strlen (s);
|
|
string_need (p, n);
|
|
memcpy (p->p, s, n);
|
|
p->p += n;
|
|
}
|
|
|
|
static void
|
|
string_appends (p, s)
|
|
string *p, *s;
|
|
{
|
|
int n;
|
|
|
|
if (s->b != s->p)
|
|
{
|
|
n = s->p - s->b;
|
|
string_need (p, n);
|
|
memcpy (p->p, s->b, n);
|
|
p->p += n;
|
|
}
|
|
}
|
|
|
|
static void
|
|
string_appendn (p, s, n)
|
|
string *p;
|
|
const char *s;
|
|
int n;
|
|
{
|
|
if (n != 0)
|
|
{
|
|
string_need (p, n);
|
|
memcpy (p->p, s, n);
|
|
p->p += n;
|
|
}
|
|
}
|
|
|
|
static void
|
|
string_prepend (p, s)
|
|
string *p;
|
|
const char *s;
|
|
{
|
|
if (s != NULL && *s != '\0')
|
|
{
|
|
string_prependn (p, s, strlen (s));
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
|
|
static void
|
|
string_prepends (p, s)
|
|
string *p, *s;
|
|
{
|
|
if (s->b != s->p)
|
|
{
|
|
string_prependn (p, s->b, s->p - s->b);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
static void
|
|
string_prependn (p, s, n)
|
|
string *p;
|
|
const char *s;
|
|
int n;
|
|
{
|
|
char *q;
|
|
|
|
if (n != 0)
|
|
{
|
|
string_need (p, n);
|
|
for (q = p->p - 1; q >= p->b; q--)
|
|
{
|
|
q[n] = q[0];
|
|
}
|
|
memcpy (p->b, s, n);
|
|
p->p += n;
|
|
}
|
|
}
|
|
|
|
/* To generate a standalone demangler program for testing purposes, just
|
|
compile and link this file with -DMAIN. When run, it demangles each
|
|
command line arg, or each stdin string, and prints the result on stdout. */
|
|
|
|
#ifdef MAIN
|
|
|
|
static void
|
|
demangle_it (mangled_name)
|
|
char *mangled_name;
|
|
{
|
|
char *result;
|
|
|
|
result = cplus_demangle (mangled_name, DMGL_PARAMS | DMGL_ANSI);
|
|
if (result == NULL)
|
|
{
|
|
printf ("%s\n", mangled_name);
|
|
}
|
|
else
|
|
{
|
|
printf ("%s\n", result);
|
|
free (result);
|
|
}
|
|
}
|
|
|
|
PTR
|
|
xmalloc (size)
|
|
long size;
|
|
{
|
|
PTR newmem;
|
|
|
|
if ((newmem = malloc ((int) size)) == NULL)
|
|
{
|
|
fprintf (stderr, "\nCan't allocate %u bytes\n", size);
|
|
exit (1);
|
|
}
|
|
return (newmem);
|
|
}
|
|
|
|
PTR
|
|
xrealloc (oldmem, size)
|
|
PTR oldmem;
|
|
long size;
|
|
{
|
|
PTR newmem;
|
|
|
|
if ((newmem = realloc ((char *) oldmem, (int) size)) == NULL)
|
|
{
|
|
fprintf (stderr, "\nCan't reallocate %u bytes\n", size);
|
|
exit (1);
|
|
}
|
|
return (newmem);
|
|
}
|
|
|
|
#include <stdio.h>
|
|
|
|
enum demangling_styles current_demangling_style = gnu_demangling;
|
|
|
|
main (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
char mangled_name[128];
|
|
char *result;
|
|
int c;
|
|
extern char *optarg;
|
|
extern int optind;
|
|
|
|
while ((c = getopt (argc, argv, "s:?")) != EOF)
|
|
{
|
|
switch (c)
|
|
{
|
|
case '?':
|
|
fprintf (stderr, "usage: demangle [-s style] [arg1 [arg2]] ...\n");
|
|
fprintf (stderr, "style = { gnu, lucid, cfront }\n");
|
|
fprintf (stderr, "reads args from stdin if none supplied\n");
|
|
exit (0);
|
|
break;
|
|
case 's':
|
|
if (strcmp (optarg, "gnu") == 0)
|
|
{
|
|
current_demangling_style = gnu_demangling;
|
|
}
|
|
else if (strcmp (optarg, "lucid") == 0)
|
|
{
|
|
current_demangling_style = lucid_demangling;
|
|
}
|
|
else if (strcmp (optarg, "cfront") == 0)
|
|
{
|
|
current_demangling_style = cfront_demangling;
|
|
}
|
|
else
|
|
{
|
|
fprintf (stderr, "unknown demangling style `%s'\n", optarg);
|
|
exit (1);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (optind < argc)
|
|
{
|
|
for ( ; optind < argc; optind++)
|
|
{
|
|
demangle_it (argv[optind]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while (gets (mangled_name))
|
|
{
|
|
demangle_it (mangled_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif /* main */
|