+++ /dev/null
-/* Helper routines for D support in GDB.
-
- Copyright (C) 2014 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#include "defs.h"
-#include "d-lang.h"
-#include "gdb_obstack.h"
-
-#include "safe-ctype.h"
-
-static const char *parse_function_args (struct obstack *, const char *);
-static const char *parse_type (struct obstack *, const char *);
-
-
-/* Demangle the calling convention from MANGLE and append it to TEMPBUF.
- Return the remaining string on success or NULL on failure. */
-
-static const char *
-parse_call_convention (struct obstack *tempbuf, const char *mangle)
-{
- if ((mangle == NULL) || (*mangle == '\0'))
- return mangle;
-
- switch (*mangle)
- {
- case 'F': /* (D) */
- mangle++;
- break;
- case 'U': /* (C) */
- mangle++;
- obstack_grow_str (tempbuf, "extern(C) ");
- break;
- case 'W': /* (Windows) */
- mangle++;
- obstack_grow_str (tempbuf, "extern(Windows) ");
- break;
- case 'V': /* (Pascal) */
- mangle++;
- obstack_grow_str (tempbuf, "extern(Pascal) ");
- break;
- case 'R': /* (C++) */
- mangle++;
- obstack_grow_str (tempbuf, "extern(C++) ");
- break;
- default:
- return NULL;
- }
-
- return mangle;
-}
-
-/* Demangle the D function attributes from MANGLE and append it to TEMPBUF.
- Return the remaining string on success or NULL on failure. */
-
-static const char *
-parse_attributes (struct obstack *tempbuf, const char *mangle)
-{
- if ((mangle == NULL) || (*mangle == '\0'))
- return mangle;
-
- while (*mangle == 'N')
- {
- mangle++;
- switch (*mangle)
- {
- case 'a': /* pure */
- mangle++;
- obstack_grow_str (tempbuf, "pure ");
- continue;
- case 'b': /* nothrow */
- mangle++;
- obstack_grow_str (tempbuf, "nothrow ");
- continue;
- case 'c': /* ref */
- mangle++;
- obstack_grow_str (tempbuf, "ref ");
- continue;
- case 'd': /* @property */
- mangle++;
- obstack_grow_str (tempbuf, "@property ");
- continue;
- case 'e': /* @trusted */
- mangle++;
- obstack_grow_str (tempbuf, "@trusted ");
- continue;
- case 'f': /* @safe */
- mangle++;
- obstack_grow_str (tempbuf, "@safe ");
- continue;
- case 'g':
- case 'h':
- /* inout parameter is represented as 'Ng'.
- vector parameter is represented as 'Nh'.
- If we see this, then we know we're really in the
- parameter list. Rewind and break. */
- mangle--;
- }
- break;
- }
- return mangle;
-}
-
-/* Demangle the function type from MANGLE and append it to TEMPBUF.
- Return the remaining string on success or NULL on failure. */
-
-static const char *
-parse_function_type (struct obstack *tempbuf, const char *mangle)
-{
- struct obstack obattr, obargs, obtype;
- char *attr, *args, *type;
- size_t szattr, szargs, sztype;
-
- if ((mangle == NULL) || (*mangle == '\0'))
- return mangle;
-
- /* The order of the mangled string is:
- TypeFunction ::
- CallConvention FuncAttrs Arguments ArgClose Type
-
- The demangled string is re-ordered as:
- CallConvention Type Arguments FuncAttrs
- */
- obstack_init (&obattr);
- obstack_init (&obargs);
- obstack_init (&obtype);
-
- /* Function call convention. */
- mangle = parse_call_convention (tempbuf, mangle);
-
- /* Function attributes. */
- mangle = parse_attributes (&obattr, mangle);
- szattr = obstack_object_size (&obattr);
- attr = obstack_finish (&obattr);
-
- /* Function arguments. */
- mangle = parse_function_args (&obargs, mangle);
- szargs = obstack_object_size (&obargs);
- args = obstack_finish (&obargs);
-
- /* Function return type. */
- mangle = parse_type (&obtype, mangle);
- sztype = obstack_object_size (&obtype);
- type = obstack_finish (&obtype);
-
- /* Append to buffer in order. */
- obstack_grow (tempbuf, type, sztype);
- obstack_grow_str (tempbuf, "(");
- obstack_grow (tempbuf, args, szargs);
- obstack_grow_str (tempbuf, ") ");
- obstack_grow (tempbuf, attr, szattr);
-
- obstack_free (&obattr, NULL);
- obstack_free (&obargs, NULL);
- obstack_free (&obtype, NULL);
- return mangle;
-}
-
-/* Demangle the argument list from MANGLE and append it to TEMPBUF.
- Return the remaining string on success or NULL on failure. */
-
-static const char *
-parse_function_args (struct obstack *tempbuf, const char *mangle)
-{
- size_t n = 0;
-
- while ((mangle != NULL) && (*mangle != '\0'))
- {
- switch (*mangle)
- {
- case 'X': /* (variadic T t...) style. */
- mangle++;
- obstack_grow_str (tempbuf, "...");
- return mangle;
- case 'Y': /* (variadic T t, ...) style. */
- mangle++;
- obstack_grow_str (tempbuf, ", ...");
- return mangle;
- case 'Z': /* Normal function. */
- mangle++;
- return mangle;
- }
-
- if (n++)
- obstack_grow_str (tempbuf, ", ");
-
- if (*mangle == 'M') /* scope(T) */
- {
- mangle++;
- obstack_grow_str (tempbuf, "scope ");
- }
-
- switch (*mangle)
- {
- case 'J': /* out(T) */
- mangle++;
- obstack_grow_str (tempbuf, "out ");
- break;
- case 'K': /* ref(T) */
- mangle++;
- obstack_grow_str (tempbuf, "ref ");
- break;
- case 'L': /* lazy(T) */
- mangle++;
- obstack_grow_str (tempbuf, "lazy ");
- break;
- }
- mangle = parse_type (tempbuf, mangle);
- }
- return mangle;
-}
-
-/* Demangle the type from MANGLE and append it to TEMPBUF.
- Return the remaining string on success or NULL on failure. */
-
-static const char *
-parse_type (struct obstack *tempbuf, const char *mangle)
-{
- if ((mangle == NULL) || (*mangle == '\0'))
- return mangle;
-
- switch (*mangle)
- {
- case 'O': /* shared(T) */
- mangle++;
- obstack_grow_str (tempbuf, "shared(");
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, ")");
- return mangle;
- case 'x': /* const(T) */
- mangle++;
- obstack_grow_str (tempbuf, "const(");
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, ")");
- return mangle;
- case 'y': /* immutable(T) */
- mangle++;
- obstack_grow_str (tempbuf, "immutable(");
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, ")");
- return mangle;
- case 'N':
- mangle++;
- if (*mangle == 'g') /* wild(T) */
- {
- mangle++;
- obstack_grow_str (tempbuf, "inout(");
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, ")");
- return mangle;
- }
- else if (*mangle == 'h') /* vector(T) */
- {
- mangle++;
- /* The basetype for vectors are always static arrays. */
- if (*mangle != 'G')
- return NULL;
- obstack_grow_str (tempbuf, "__vector(");
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, ")");
- return mangle;
- }
- else
- return NULL;
- case 'A': /* dynamic array (T[]) */
- mangle++;
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, "[]");
- return mangle;
- case 'G': /* static array (T[N]) */
- {
- const char *numptr;
- size_t num = 0;
- mangle++;
-
- numptr = mangle;
- while (ISDIGIT (*mangle))
- {
- num++;
- mangle++;
- }
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, "[");
- obstack_grow (tempbuf, numptr, num);
- obstack_grow_str (tempbuf, "]");
- return mangle;
- }
- case 'H': /* associative array (T[T]) */
- {
- struct obstack obtype;
- char *type;
- size_t sztype;
- mangle++;
-
- obstack_init (&obtype);
- mangle = parse_type (&obtype, mangle);
- sztype = obstack_object_size (&obtype);
- type = obstack_finish (&obtype);
-
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, "[");
- obstack_grow (tempbuf, type, sztype);
- obstack_grow_str (tempbuf, "]");
-
- obstack_free (&obtype, NULL);
- return mangle;
- }
- case 'P': /* pointer (T*) */
- mangle++;
- mangle = parse_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, "*");
- return mangle;
- case 'I': /* ident T */
- case 'C': /* class T */
- case 'S': /* struct T */
- case 'E': /* enum T */
- case 'T': /* typedef T */
- mangle++;
- return d_parse_symbol (tempbuf, mangle);
- case 'D': /* delegate T */
- mangle++;
- mangle = parse_function_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, "delegate");
- return mangle;
- case 'B': /* tuple T */
- /* TODO: Handle this. */
- return NULL;
-
- /* Function types */
- case 'F': case 'U': case 'W':
- case 'V': case 'R':
- mangle = parse_function_type (tempbuf, mangle);
- obstack_grow_str (tempbuf, "function");
- return mangle;
-
- /* Basic types */
- case 'n':
- mangle++;
- obstack_grow_str (tempbuf, "none");
- return mangle;
- case 'v':
- mangle++;
- obstack_grow_str (tempbuf, "void");
- return mangle;
- case 'g':
- mangle++;
- obstack_grow_str (tempbuf, "byte");
- return mangle;
- case 'h':
- mangle++;
- obstack_grow_str (tempbuf, "ubyte");
- return mangle;
- case 's':
- mangle++;
- obstack_grow_str (tempbuf, "short");
- return mangle;
- case 't':
- mangle++;
- obstack_grow_str (tempbuf, "ushort");
- return mangle;
- case 'i':
- mangle++;
- obstack_grow_str (tempbuf, "int");
- return mangle;
- case 'k':
- mangle++;
- obstack_grow_str (tempbuf, "uint");
- return mangle;
- case 'l':
- mangle++;
- obstack_grow_str (tempbuf, "long");
- return mangle;
- case 'm':
- mangle++;
- obstack_grow_str (tempbuf, "ulong");
- return mangle;
- case 'f':
- mangle++;
- obstack_grow_str (tempbuf, "float");
- return mangle;
- case 'd':
- mangle++;
- obstack_grow_str (tempbuf, "double");
- return mangle;
- case 'e':
- mangle++;
- obstack_grow_str (tempbuf, "real");
- return mangle;
-
- /* Imaginary and Complex types */
- case 'o':
- mangle++;
- obstack_grow_str (tempbuf, "ifloat");
- return mangle;
- case 'p':
- mangle++;
- obstack_grow_str (tempbuf, "idouble");
- return mangle;
- case 'j':
- mangle++;
- obstack_grow_str (tempbuf, "ireal");
- return mangle;
- case 'q':
- mangle++;
- obstack_grow_str (tempbuf, "cfloat");
- return mangle;
- case 'r':
- mangle++;
- obstack_grow_str (tempbuf, "cdouble");
- return mangle;
- case 'c':
- mangle++;
- obstack_grow_str (tempbuf, "creal");
- return mangle;
-
- /* Other types */
- case 'b':
- mangle++;
- obstack_grow_str (tempbuf, "bool");
- return mangle;
- case 'a':
- mangle++;
- obstack_grow_str (tempbuf, "char");
- return mangle;
- case 'u':
- mangle++;
- obstack_grow_str (tempbuf, "wchar");
- return mangle;
- case 'w':
- mangle++;
- obstack_grow_str (tempbuf, "dchar");
- return mangle;
-
- default: /* unhandled */
- return NULL;
- }
-}
-
-/* Extract the identifier from MANGLE and append it to TEMPBUF.
- Return the remaining string on success or NULL on failure. */
-
-static const char *
-parse_identifier (struct obstack *tempbuf, const char *mangle)
-{
- if ((mangle == NULL) || (*mangle == '\0'))
- return mangle;
-
- if (ISDIGIT (*mangle))
- {
- char *endptr;
- long i = strtol (mangle, &endptr, 10);
-
- if (i <= 0 || strlen (endptr) < i)
- return NULL;
-
- mangle = endptr;
-
- /* No support for demangling templates. */
- if (i >= 5 && strncmp (mangle, "__T", 3) == 0)
- return NULL;
-
- if (strncmp (mangle, "__ctor", i) == 0)
- {
- /* Constructor symbol for a class/struct. */
- obstack_grow_str (tempbuf, "this");
- mangle += i;
- return mangle;
- }
- else if (strncmp (mangle, "__dtor", i) == 0)
- {
- /* Destructor symbol for a class/struct. */
- obstack_grow_str (tempbuf, "~this");
- mangle += i;
- return mangle;
- }
- else if (strncmp (mangle, "__postblit", i) == 0)
- {
- /* Postblit symbol for a struct. */
- obstack_grow_str (tempbuf, "this(this)");
- mangle += i;
- return mangle;
- }
- else if (strncmp (mangle, "__initZ", i+1) == 0)
- {
- /* The static initialiser for a given symbol. */
- obstack_grow_str (tempbuf, "init$");
- mangle += i + 1;
- return mangle;
- }
- else if (strncmp (mangle, "__ClassZ", i+1) == 0)
- {
- /* The classinfo symbol for a given class. */
- obstack_grow_str (tempbuf, "classinfo$");
- mangle += i + 1;
- return mangle;
- }
- else if (strncmp (mangle, "__vtblZ", i+1) == 0)
- {
- /* The vtable symbol for a given class. */
- obstack_grow_str (tempbuf, "vtbl$");
- mangle += i + 1;
- return mangle;
- }
- else if (strncmp (mangle, "__InterfaceZ", i+1) == 0)
- {
- /* The interface symbol for a given class. */
- obstack_grow_str (tempbuf, "interface$");
- mangle += i + 1;
- return mangle;
- }
- else if (strncmp (mangle, "__ModuleInfoZ", i+1) == 0)
- {
- /* The ModuleInfo symbol for a given module. */
- obstack_grow_str (tempbuf, "moduleinfo$");
- mangle += i + 1;
- return mangle;
- }
- obstack_grow (tempbuf, mangle, i);
- mangle += i;
- }
- else
- return NULL;
-
- return mangle;
-}
-
-/* Test whether the current position of MANGLE is pointing to the
- beginning of a mangled function parameter list, which starts with
- the calling convention. Returns 1 on success or 0 on failure. */
-
-static int
-call_convention_p (const char *mangle)
-{
- size_t i;
-
- if ((mangle == NULL) || (*mangle == '\0'))
- return 0;
-
- switch (*mangle)
- {
- case 'F': case 'U': case 'V':
- case 'W': case 'R':
- return 1;
-
- case 'M': /* Prefix for functions needing 'this'. */
- i = 1;
- if (mangle[i] == 'x')
- i++;
-
- switch (mangle[i])
- {
- case 'F': case 'U': case 'V':
- case 'W': case 'R':
- return 1;
- }
-
- default:
- return 0;
- }
-}
-
-/* Extract and demangle the symbol in MANGLE and append it to TEMPBUF.
- Return the remaining signature on success or NULL on failure. */
-
-const char *
-d_parse_symbol (struct obstack *tempbuf, const char *mangle)
-{
- size_t n = 0;
- do
- {
- if (n++)
- obstack_grow_str (tempbuf, ".");
-
- mangle = parse_identifier (tempbuf, mangle);
-
- if (call_convention_p (mangle))
- {
- char *saved;
-
- /* Skip over 'this' parameter. */
- if (*mangle == 'M')
- mangle += (mangle[1] == 'x') ? 2 : 1;
-
- /* Skip over calling convention and attributes in qualified name. */
- saved = obstack_next_free (tempbuf);
- mangle = parse_call_convention (tempbuf, mangle);
- mangle = parse_attributes (tempbuf, mangle);
- obstack_next_free (tempbuf) = saved;
-
- obstack_grow_str (tempbuf, "(");
- mangle = parse_function_args (tempbuf, mangle);
- obstack_grow_str (tempbuf, ")");
-
- /* Demangle the function return type as a kind of sanity test. */
- if ((mangle != NULL) && !ISDIGIT (*mangle))
- {
- saved = obstack_next_free (tempbuf);
- mangle = parse_type (tempbuf, mangle);
- obstack_next_free (tempbuf) = saved;
- }
- }
- }
- while ((mangle != NULL) && ISDIGIT (*mangle));
-
- return mangle;
-}
-
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