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wine/dlls/msvcrt/undname.c

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/*
* Demangle VC++ symbols into C function prototypes
*
* Copyright 2000 Jon Griffiths
* 2004 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <stdio.h>
#include "msvcrt.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
/* TODO:
* - document a bit (grammar + functions)
* - back-port this new code into tools/winedump/msmangle.c
*/
#define UNDNAME_COMPLETE (0x0000)
#define UNDNAME_NO_LEADING_UNDERSCORES (0x0001) /* Don't show __ in calling convention */
#define UNDNAME_NO_MS_KEYWORDS (0x0002) /* Don't show calling convention at all */
#define UNDNAME_NO_FUNCTION_RETURNS (0x0004) /* Don't show function/method return value */
#define UNDNAME_NO_ALLOCATION_MODEL (0x0008)
#define UNDNAME_NO_ALLOCATION_LANGUAGE (0x0010)
#define UNDNAME_NO_MS_THISTYPE (0x0020)
#define UNDNAME_NO_CV_THISTYPE (0x0040)
#define UNDNAME_NO_THISTYPE (0x0060)
#define UNDNAME_NO_ACCESS_SPECIFIERS (0x0080) /* Don't show access specifier (public/protected/private) */
#define UNDNAME_NO_THROW_SIGNATURES (0x0100)
#define UNDNAME_NO_MEMBER_TYPE (0x0200) /* Don't show static/virtual specifier */
#define UNDNAME_NO_RETURN_UDT_MODEL (0x0400)
#define UNDNAME_32_BIT_DECODE (0x0800)
#define UNDNAME_NAME_ONLY (0x1000) /* Only report the variable/method name */
#define UNDNAME_NO_ARGUMENTS (0x2000) /* Don't show method arguments */
#define UNDNAME_NO_SPECIAL_SYMS (0x4000)
#define UNDNAME_NO_COMPLEX_TYPE (0x8000)
/* How data types modifiers are stored:
* M (in the following definitions) is defined for
* 'A', 'B', 'C' and 'D' as follows
* {<A>}: ""
* {<B>}: "const "
* {<C>}: "volatile "
* {<D>}: "const volatile "
*
* in arguments:
* P<M>x {<M>}x*
* Q<M>x {<M>}x* const
* A<M>x {<M>}x&
* in data fields:
* same as for arguments and also the following
* ?<M>x {<M>}x
*
*/
#define MAX_ARRAY_ELTS 32
struct array
{
unsigned start; /* first valid reference in array */
unsigned num; /* total number of used elts */
unsigned max;
char* elts[MAX_ARRAY_ELTS];
};
/* Structure holding a parsed symbol */
struct parsed_symbol
{
unsigned flags; /* the UNDNAME_ flags used for demangling */
malloc_func_t mem_alloc_ptr; /* internal allocator */
free_func_t mem_free_ptr; /* internal deallocator */
const char* current; /* pointer in input (mangled) string */
char* result; /* demangled string */
struct array names; /* array of names for back reference */
struct array stack; /* stack of parsed strings */
void* alloc_list; /* linked list of allocated blocks */
unsigned avail_in_first; /* number of available bytes in head block */
};
/* Type for parsing mangled types */
struct datatype_t
{
const char* left;
const char* right;
};
/******************************************************************
* und_alloc
*
* Internal allocator. Uses a simple linked list of large blocks
* where we use a poor-man allocator. It's fast, and since all
* allocation is pool, memory management is easy (esp. freeing).
*/
static void* und_alloc(struct parsed_symbol* sym, size_t len)
{
void* ptr;
#define BLOCK_SIZE 1024
#define AVAIL_SIZE (1024 - sizeof(void*))
if (len > AVAIL_SIZE)
{
/* allocate a specific block */
ptr = sym->mem_alloc_ptr(sizeof(void*) + len);
if (!ptr) return NULL;
*(void**)ptr = sym->alloc_list;
sym->alloc_list = ptr;
sym->avail_in_first = 0;
ptr = (char*)sym->alloc_list + sizeof(void*);
}
else
{
if (len > sym->avail_in_first)
{
/* add a new block */
ptr = sym->mem_alloc_ptr(BLOCK_SIZE);
if (!ptr) return NULL;
*(void**)ptr = sym->alloc_list;
sym->alloc_list = ptr;
sym->avail_in_first = AVAIL_SIZE;
}
/* grab memory from head block */
ptr = (char*)sym->alloc_list + BLOCK_SIZE - sym->avail_in_first;
sym->avail_in_first -= len;
}
return ptr;
#undef BLOCK_SIZE
#undef AVAIL_SIZE
}
/******************************************************************
* und_free
* Frees all the blocks in the list of large blocks allocated by
* und_alloc.
*/
static void und_free_all(struct parsed_symbol* sym)
{
void* next;
while (sym->alloc_list)
{
next = *(void**)sym->alloc_list;
if(sym->mem_free_ptr) sym->mem_free_ptr(sym->alloc_list);
sym->alloc_list = next;
}
sym->avail_in_first = 0;
}
/******************************************************************
* str_array_init
* Initialises an array of strings
*/
static void str_array_init(struct array* a)
{
a->start = a->num = a->max = 0;
}
/******************************************************************
* str_array_push
* Adding a new string to an array
*/
static void str_array_push(struct parsed_symbol* sym, const char* ptr, size_t len,
struct array* a)
{
assert(ptr);
assert(a);
assert(a->num < MAX_ARRAY_ELTS);
if (len == -1) len = strlen(ptr);
a->elts[a->num] = und_alloc(sym, len + 1);
assert(a->elts[a->num]);
memcpy(a->elts[a->num], ptr, len);
a->elts[a->num][len] = '\0';
if (++a->num >= a->max) a->max = a->num;
{
int i;
char c;
for (i = a->max - 1; i >= 0; i--)
{
c = '>';
if (i < a->start) c = '-';
else if (i >= a->num) c = '}';
TRACE("%p\t%d%c %s\n", a, i, c, a->elts[i]);
}
}
}
/******************************************************************
* str_array_get_ref
* Extracts a reference from an existing array (doing proper type
* checking)
*/
static char* str_array_get_ref(struct array* cref, unsigned idx)
{
assert(cref);
if (cref->start + idx >= cref->max)
{
WARN("Out of bounds: %p %d + %d >= %d\n",
cref, cref->start, idx, cref->max);
return NULL;
}
TRACE("Returning %p[%d] => %s\n",
cref, idx, cref->elts[cref->start + idx]);
return cref->elts[cref->start + idx];
}
/******************************************************************
* str_printf
* Helper for printf type of command (only %s and %c are implemented)
* while dynamically allocating the buffer
*/
static char* str_printf(struct parsed_symbol* sym, const char* format, ...)
{
va_list args;
size_t len = 1, i, sz;
char* tmp;
char* p;
char* t;
va_start(args, format);
for (i = 0; format[i]; i++)
{
if (format[i] == '%')
{
switch (format[++i])
{
case 's': t = va_arg(args, char*); if (t) len += strlen(t); break;
case 'c': (void)va_arg(args, int); len++; break;
default: i--; /* fall thru */
case '%': len++; break;
}
}
else len++;
}
va_end(args);
if (!(tmp = (char*)und_alloc(sym, len))) return NULL;
va_start(args, format);
for (p = tmp, i = 0; format[i]; i++)
{
if (format[i] == '%')
{
switch (format[++i])
{
case 's':
t = va_arg(args, char*);
if (t)
{
sz = strlen(t);
memcpy(p, t, sz);
p += sz;
}
break;
case 'c':
*p++ = (char)va_arg(args, int);
break;
default: i--; /* fall thru */
case '%': *p++ = '%'; break;
}
}
else *p++ = format[i];
}
va_end(args);
*p = '\0';
return tmp;
}
/* forward declaration */
static BOOL demangle_datatype(struct parsed_symbol* sym, struct datatype_t* ct,
struct array* pmt, BOOL in_args);
/******************************************************************
* get_args
* Parses a list of function/method arguments, creates a string corresponding
* to the arguments' list.
*/
static char* get_args(struct parsed_symbol* sym, struct array* pmt_ref, BOOL z_term,
char open_char, char close_char)
{
struct datatype_t ct;
struct array arg_collect;
char* args_str = NULL;
int i;
str_array_init(&arg_collect);
/* Now come the function arguments */
while (*sym->current)
{
/* Decode each data type and append it to the argument list */
if (*sym->current == '@')
{
sym->current++;
break;
}
if (!demangle_datatype(sym, &ct, pmt_ref, TRUE))
return NULL;
/* 'void' terminates an argument list */
if (!strcmp(ct.left, "void"))
{
if (!z_term && *sym->current == '@') sym->current++;
break;
}
str_array_push(sym, str_printf(sym, "%s%s", ct.left, ct.right), -1,
&arg_collect);
if (!strcmp(ct.left, "...")) break;
}
/* Functions are always terminated by 'Z'. If we made it this far and
* don't find it, we have incorrectly identified a data type.
*/
if (z_term && *sym->current++ != 'Z') return NULL;
if (arg_collect.num == 0 ||
(arg_collect.num == 1 && !strcmp(arg_collect.elts[0], "void")))
return str_printf(sym, "%cvoid%c", open_char, close_char);
for (i = 1; i < arg_collect.num; i++)
{
args_str = str_printf(sym, "%s,%s", args_str, arg_collect.elts[i]);
}
if (close_char == '>' && args_str && args_str[strlen(args_str) - 1] == '>')
args_str = str_printf(sym, "%c%s%s %c",
open_char, arg_collect.elts[0], args_str, close_char);
else
args_str = str_printf(sym, "%c%s%s%c",
open_char, arg_collect.elts[0], args_str, close_char);
return args_str;
}
/******************************************************************
* get_modifier
* Parses the type modifier. Always returns a static string
*/
static BOOL get_modifier(char ch, const char** ret)
{
switch (ch)
{
case 'A': *ret = NULL; break;
case 'B': *ret = "const"; break;
case 'C': *ret = "volatile"; break;
case 'D': *ret = "const volatile"; break;
default: return FALSE;
}
return TRUE;
}
static const char* get_modified_type(struct parsed_symbol* sym, char modif)
{
const char* modifier;
const char* ret = NULL;
const char* str_modif;
switch (modif)
{
case 'A': str_modif = " &"; break;
case 'B': str_modif = " & volatile"; break;
case 'P': str_modif = " *"; break;
case 'Q': str_modif = " * const"; break;
case 'R': str_modif = " * volatile"; break;
case 'S': str_modif = " * const volatile"; break;
case '?': str_modif = ""; break;
default: return NULL;
}
if (get_modifier(*sym->current++, &modifier))
{
unsigned mark = sym->stack.num;
struct datatype_t sub_ct;
/* Recurse to get the referred-to type */
if (!demangle_datatype(sym, &sub_ct, NULL, FALSE))
return NULL;
ret = str_printf(sym, "%s%s%s%s%s",
sub_ct.left, sub_ct.left && modifier ? " " : NULL,
modifier, sub_ct.right, str_modif);
sym->stack.num = mark;
}
return ret;
}
/******************************************************************
* get_literal_string
* Gets the literal name from the current position in the mangled
* symbol to the first '@' character. It pushes the parsed name to
* the symbol names stack and returns a pointer to it or NULL in
* case of an error.
*/
static char* get_literal_string(struct parsed_symbol* sym)
{
const char *ptr = sym->current;
do {
if (!((*sym->current >= 'A' && *sym->current <= 'Z') ||
(*sym->current >= 'a' && *sym->current <= 'z') ||
(*sym->current >= '0' && *sym->current <= '9') ||
*sym->current == '_' || *sym->current == '$')) {
TRACE("Failed at '%c' in %s\n", *sym->current, ptr);
return NULL;
}
} while (*++sym->current != '@');
sym->current++;
str_array_push(sym, ptr, sym->current - 1 - ptr, &sym->names);
return str_array_get_ref(&sym->names, sym->names.num - sym->names.start - 1);
}
/******************************************************************
* get_template_name
* Parses a name with a template argument list and returns it as
* a string.
* In a template argument list the back reference to the names
* table is separately created. '0' points to the class component
* name with the template arguments. We use the same stack array
* to hold the names but save/restore the stack state before/after
* parsing the template argument list.
*/
static char* get_template_name(struct parsed_symbol* sym)
{
char *name, *args;
unsigned num_mark = sym->names.num;
unsigned start_mark = sym->names.start;
unsigned stack_mark = sym->stack.num;
sym->names.start = sym->names.num;
if (!(name = get_literal_string(sym)))
return FALSE;
args = get_args(sym, NULL, FALSE, '<', '>');
if (args != NULL)
name = str_printf(sym, "%s%s", name, args);
sym->names.num = num_mark;
sym->names.start = start_mark;
sym->stack.num = stack_mark;
return name;
}
/******************************************************************
* get_class
* Parses class as a list of parent-classes, terminated by '@' and stores the
* result in 'a' array. Each parent-classes, as well as the inner element
* (either field/method name or class name), are represented in the mangled
* name by a literal name ([a-zA-Z0-9_]+ terminated by '@') or a back reference
* ([0-9]) or a name with template arguments ('?$' literal name followed by the
* template argument list). The class name components appear in the reverse
* order in the mangled name, e.g aaa@bbb@ccc@@ will be demangled to
* ccc::bbb::aaa
* For each of this class name componets a string will be allocated in the
* array.
*/
static BOOL get_class(struct parsed_symbol* sym)
{
const char* name = NULL;
while (*sym->current != '@')
{
switch (*sym->current)
{
case '\0': return FALSE;
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
case '8': case '9':
name = str_array_get_ref(&sym->names, *sym->current++ - '0');
break;
case '?':
if (*++sym->current == '$')
{
sym->current++;
name = get_template_name(sym);
str_array_push(sym, name, -1, &sym->names);
}
break;
default:
name = get_literal_string(sym);
break;
}
if (!name)
return FALSE;
str_array_push(sym, name, -1, &sym->stack);
}
sym->current++;
return TRUE;
}
/******************************************************************
* get_class_string
* From an array collected by get_class in sym->stack, constructs the
* corresponding (allocated) string
*/
static char* get_class_string(struct parsed_symbol* sym, int start)
{
int i;
size_t len, sz;
char* ret;
struct array *a = &sym->stack;
for (len = 0, i = start; i < a->num; i++)
{
assert(a->elts[i]);
len += 2 + strlen(a->elts[i]);
}
if (!(ret = und_alloc(sym, len - 1))) return NULL;
for (len = 0, i = a->num - 1; i >= start; i--)
{
sz = strlen(a->elts[i]);
memcpy(ret + len, a->elts[i], sz);
len += sz;
if (i > start)
{
ret[len++] = ':';
ret[len++] = ':';
}
}
ret[len] = '\0';
return ret;
}
/******************************************************************
* get_class_name
* Wrapper around get_class and get_class_string.
*/
static char* get_class_name(struct parsed_symbol* sym)
{
unsigned mark = sym->stack.num;
char* s = NULL;
if (get_class(sym))
s = get_class_string(sym, mark);
sym->stack.num = mark;
return s;
}
/******************************************************************
* get_calling_convention
* Returns a static string corresponding to the calling convention described
* by char 'ch'. Sets export to TRUE iff the calling convention is exported.
*/
static BOOL get_calling_convention(char ch, const char** call_conv,
const char** exported, unsigned flags)
{
*call_conv = *exported = NULL;
if (!(flags & (UNDNAME_NO_MS_KEYWORDS | UNDNAME_NO_ALLOCATION_LANGUAGE)))
{
if (flags & UNDNAME_NO_LEADING_UNDERSCORES)
{
if (((ch - 'A') % 2) == 1) *exported = "dll_export ";
switch (ch)
{
case 'A': case 'B': *call_conv = "cdecl"; break;
case 'C': case 'D': *call_conv = "pascal"; break;
case 'E': case 'F': *call_conv = "thiscall"; break;
case 'G': case 'H': *call_conv = "stdcall"; break;
case 'I': case 'J': *call_conv = "fastcall"; break;
case 'K': break;
default: ERR("Unknown calling convention %c\n", ch); return FALSE;
}
}
else
{
if (((ch - 'A') % 2) == 1) *exported = "__dll_export ";
switch (ch)
{
case 'A': case 'B': *call_conv = "__cdecl"; break;
case 'C': case 'D': *call_conv = "__pascal"; break;
case 'E': case 'F': *call_conv = "__thiscall"; break;
case 'G': case 'H': *call_conv = "__stdcall"; break;
case 'I': case 'J': *call_conv = "__fastcall"; break;
case 'K': break;
default: ERR("Unknown calling convention %c\n", ch); return FALSE;
}
}
}
return TRUE;
}
/*******************************************************************
* get_simple_type
* Return a string containing an allocated string for a simple data type
*/
static const char* get_simple_type(char c)
{
const char* type_string;
switch (c)
{
case 'C': type_string = "signed char"; break;
case 'D': type_string = "char"; break;
case 'E': type_string = "unsigned char"; break;
case 'F': type_string = "short"; break;
case 'G': type_string = "unsigned short"; break;
case 'H': type_string = "int"; break;
case 'I': type_string = "unsigned int"; break;
case 'J': type_string = "long"; break;
case 'K': type_string = "unsigned long"; break;
case 'M': type_string = "float"; break;
case 'N': type_string = "double"; break;
case 'O': type_string = "long double"; break;
case 'X': type_string = "void"; break;
case 'Z': type_string = "..."; break;
default: type_string = NULL; break;
}
return type_string;
}
/*******************************************************************
* get_extented_type
* Return a string containing an allocated string for a simple data type
*/
static const char* get_extended_type(char c)
{
const char* type_string;
switch (c)
{
case 'D': type_string = "__int8"; break;
case 'E': type_string = "unsigned __int8"; break;
case 'F': type_string = "__int16"; break;
case 'G': type_string = "unsigned __int16"; break;
case 'H': type_string = "__int32"; break;
case 'I': type_string = "unsigned __int32"; break;
case 'J': type_string = "__int64"; break;
case 'K': type_string = "unsigned __int64"; break;
case 'L': type_string = "__int128"; break;
case 'M': type_string = "unsigned __int128"; break;
case 'N': type_string = "bool"; break;
case 'W': type_string = "wchar_t"; break;
default: type_string = NULL; break;
}
return type_string;
}
/*******************************************************************
* demangle_datatype
*
* Attempt to demangle a C++ data type, which may be datatype.
* a datatype type is made up of a number of simple types. e.g:
* char** = (pointer to (pointer to (char)))
*/
static BOOL demangle_datatype(struct parsed_symbol* sym, struct datatype_t* ct,
struct array* pmt_ref, BOOL in_args)
{
char dt;
BOOL add_pmt = TRUE;
int num_args=0;
assert(ct);
ct->left = ct->right = NULL;
switch (dt = *sym->current++)
{
case '_':
/* MS type: __int8,__int16 etc */
ct->left = get_extended_type(*sym->current++);
break;
case 'C': case 'D': case 'E': case 'F': case 'G':
case 'H': case 'I': case 'J': case 'K': case 'M':
case 'N': case 'O': case 'X': case 'Z':
/* Simple data types */
ct->left = get_simple_type(dt);
add_pmt = FALSE;
break;
case 'T': /* union */
case 'U': /* struct */
case 'V': /* class */
/* Class/struct/union */
{
const char* struct_name = NULL;
const char* type_name = NULL;
if (!(struct_name = get_class_name(sym)))
goto done;
if (!(sym->flags & UNDNAME_NO_COMPLEX_TYPE))
{
switch (dt)
{
case 'T': type_name = "union "; break;
case 'U': type_name = "struct "; break;
case 'V': type_name = "class "; break;
}
}
ct->left = str_printf(sym, "%s%s", type_name, struct_name);
}
break;
case '?':
/* not all the time is seems */
if (!(ct->left = get_modified_type(sym, '?'))) goto done;
break;
case 'A': /* reference */
case 'B': /* volatile reference */
if (!(ct->left = get_modified_type(sym, dt))) goto done;
break;
case 'Q': /* const pointer */
case 'R': /* volatile pointer */
case 'S': /* const volatile pointer */
if (!(ct->left = get_modified_type(sym, in_args ? dt : 'P'))) goto done;
break;
case 'P': /* Pointer */
if (isdigit(*sym->current))
{
/* FIXME: P6 = Function pointer, others who knows.. */
if (*sym->current++ == '6')
{
char* args = NULL;
const char* call_conv;
const char* exported;
struct datatype_t sub_ct;
unsigned mark = sym->stack.num;
if (!get_calling_convention(*sym->current++,
&call_conv, &exported,
sym->flags & ~UNDNAME_NO_ALLOCATION_LANGUAGE) ||
!demangle_datatype(sym, &sub_ct, pmt_ref, FALSE))
goto done;
args = get_args(sym, pmt_ref, TRUE, '(', ')');
if (!args) goto done;
sym->stack.num = mark;
ct->left = str_printf(sym, "%s%s (%s*",
sub_ct.left, sub_ct.right, call_conv);
ct->right = str_printf(sym, ")%s", args);
}
else goto done;
}
else if (!(ct->left = get_modified_type(sym, 'P'))) goto done;
break;
case 'W':
if (*sym->current == '4')
{
char* enum_name;
sym->current++;
if (!(enum_name = get_class_name(sym)))
goto done;
if (sym->flags & UNDNAME_NO_COMPLEX_TYPE)
ct->left = enum_name;
else
ct->left = str_printf(sym, "enum %s", enum_name);
}
else goto done;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
/* Referring back to previously parsed type */
ct->left = str_array_get_ref(pmt_ref, dt - '0');
if (!ct->left) goto done;
add_pmt = FALSE;
break;
case '$':
if (sym->current[0] != '0') goto done;
if (sym->current[1] >= '0' && sym->current[1] <= '9')
{
char* ptr;
ptr = und_alloc(sym, 2);
ptr[0] = sym->current[1] + 1;
ptr[1] = 0;
ct->left = ptr;
sym->current += 2;
}
else if (sym->current[1] >= 'A' && sym->current[1] <= 'P')
{
while (sym->current[1] >= 'A' && sym->current[1] <= 'P')
{
num_args *= 16;
num_args += sym->current[1] - 'A';
sym->current += 1;
}
if(sym->current[1] == '@')
{
char *ptr;
ptr = und_alloc(sym, 17);
sprintf(ptr,"%d",num_args);
ct->left = ptr;
sym->current += 1;
}
}
else goto done;
break;
default :
ERR("Unknown type %c\n", dt);
break;
}
if (add_pmt && pmt_ref && in_args)
str_array_push(sym, str_printf(sym, "%s%s", ct->left, ct->right),
-1, pmt_ref);
done:
return ct->left != NULL;
}
/******************************************************************
* handle_data
* Does the final parsing and handling for a variable or a field in
* a class.
*/
static BOOL handle_data(struct parsed_symbol* sym)
{
const char* access = NULL;
const char* member_type = NULL;
const char* modifier = NULL;
struct datatype_t ct;
char* name = NULL;
BOOL ret = FALSE;
char dt;
/* 0 private static
* 1 protected static
* 2 public static
* 3 private non-static
* 4 protected non-static
* 5 public non-static
* 6 ?? static
* 7 ?? static
*/
if (!(sym->flags & UNDNAME_NO_ACCESS_SPECIFIERS))
{
/* we only print the access for static members */
switch (*sym->current)
{
case '0': access = "private: "; break;
case '1': access = "protected: "; break;
case '2': access = "public: "; break;
}
}
if (!(sym->flags & UNDNAME_NO_MEMBER_TYPE))
{
if (*sym->current >= '0' && *sym->current <= '2')
member_type = "static ";
}
name = get_class_string(sym, 0);
switch (dt = *sym->current++)
{
case '0': case '1': case '2':
case '3': case '4': case '5':
{
unsigned mark = sym->stack.num;
struct array pmt;
str_array_init(&pmt);
if (!demangle_datatype(sym, &ct, &pmt, FALSE)) goto done;
if (!get_modifier(*sym->current++, &modifier)) goto done;
sym->stack.num = mark;
}
break;
case '6' : /* compiler generated static */
case '7' : /* compiler generated static */
ct.left = ct.right = NULL;
if (!get_modifier(*sym->current++, &modifier)) goto done;
if (*sym->current != '@')
{
char* cls = NULL;
if (!(cls = get_class_name(sym)))
goto done;
ct.right = str_printf(sym, "{for `%s'}", cls);
}
break;
default: goto done;
}
if (sym->flags & UNDNAME_NAME_ONLY) ct.left = ct.right = modifier = NULL;
sym->result = str_printf(sym, "%s%s%s%s%s%s%s%s", access,
member_type, ct.left,
modifier && ct.left ? " " : NULL, modifier,
modifier || ct.left ? " " : NULL, name, ct.right);
ret = TRUE;
done:
return ret;
}
/******************************************************************
* handle_method
* Does the final parsing and handling for a function or a method in
* a class.
*/
static BOOL handle_method(struct parsed_symbol* sym, BOOL cast_op)
{
const char* access = NULL;
const char* member_type = NULL;
struct datatype_t ct_ret;
const char* call_conv;
const char* modifier = NULL;
const char* exported;
const char* args_str = NULL;
const char* name = NULL;
BOOL ret = FALSE;
unsigned mark;
struct array array_pmt;
/* FIXME: why 2 possible letters for each option?
* 'A' private:
* 'B' private:
* 'C' private: static
* 'D' private: static
* 'E' private: virtual
* 'F' private: virtual
* 'G' private: thunk
* 'H' private: thunk
* 'I' protected:
* 'J' protected:
* 'K' protected: static
* 'L' protected: static
* 'M' protected: virtual
* 'N' protected: virtual
* 'O' protected: thunk
* 'P' protected: thunk
* 'Q' public:
* 'R' public:
* 'S' public: static
* 'T' public: static
* 'U' public: virtual
* 'V' public: virtual
* 'W' public: thunk
* 'X' public: thunk
* 'Y'
* 'Z'
*/
if (!(sym->flags & UNDNAME_NO_ACCESS_SPECIFIERS))
{
switch ((*sym->current - 'A') / 8)
{
case 0: access = "private: "; break;
case 1: access = "protected: "; break;
case 2: access = "public: "; break;
}
}
if (!(sym->flags & UNDNAME_NO_MEMBER_TYPE))
{
if (*sym->current >= 'A' && *sym->current <= 'X')
{
switch ((*sym->current - 'A') % 8)
{
case 2: case 3: member_type = "static "; break;
case 4: case 5: member_type = "virtual "; break;
case 6: case 7: member_type = "thunk "; break;
}
}
}
if (*sym->current >= 'A' && *sym->current <= 'X')
{
if (!((*sym->current - 'A') & 2))
{
/* Implicit 'this' pointer */
/* If there is an implicit this pointer, const modifier follows */
if (!get_modifier(*++sym->current, &modifier)) goto done;
}
}
else if (*sym->current < 'A' || *sym->current > 'Z') goto done;
sym->current++;
name = get_class_string(sym, 0);
if (!get_calling_convention(*sym->current++, &call_conv, &exported,
sym->flags))
goto done;
str_array_init(&array_pmt);
/* Return type, or @ if 'void' */
if (*sym->current == '@')
{
ct_ret.left = "void";
ct_ret.right = NULL;
sym->current++;
}
else
{
if (!demangle_datatype(sym, &ct_ret, &array_pmt, FALSE))
goto done;
}
if (sym->flags & UNDNAME_NO_FUNCTION_RETURNS)
ct_ret.left = ct_ret.right = NULL;
if (cast_op)
{
name = str_printf(sym, "%s%s%s", name, ct_ret.left, ct_ret.right);
ct_ret.left = ct_ret.right = NULL;
}
mark = sym->stack.num;
if (!(args_str = get_args(sym, &array_pmt, TRUE, '(', ')'))) goto done;
if (sym->flags & UNDNAME_NAME_ONLY) args_str = modifier = NULL;
sym->stack.num = mark;
/* Note: '()' after 'Z' means 'throws', but we don't care here
* Yet!!! FIXME
*/
sym->result = str_printf(sym, "%s%s%s%s%s%s%s%s%s%s%s%s",
access, member_type, ct_ret.left,
(ct_ret.left && !ct_ret.right) ? " " : NULL,
call_conv, call_conv ? " " : NULL, exported,
name, args_str, modifier,
modifier ? " " : NULL, ct_ret.right);
ret = TRUE;
done:
return ret;
}
/*******************************************************************
* symbol_demangle
* Demangle a C++ linker symbol
*/
static BOOL symbol_demangle(struct parsed_symbol* sym)
{
BOOL ret = FALSE;
unsigned do_after = 0;
static CHAR dashed_null[] = "--null--";
/* FIXME seems wrong as name, as it demangles a simple data type */
if (sym->flags & UNDNAME_NO_ARGUMENTS)
{
struct datatype_t ct;
if (demangle_datatype(sym, &ct, NULL, FALSE))
{
sym->result = str_printf(sym, "%s%s", ct.left, ct.right);
ret = TRUE;
}
goto done;
}
/* MS mangled names always begin with '?' */
if (*sym->current != '?') return FALSE;
str_array_init(&sym->names);
str_array_init(&sym->stack);
sym->current++;
/* Then function name or operator code */
if (*sym->current == '?' && sym->current[1] != '$')
{
const char* function_name = NULL;
/* C++ operator code (one character, or two if the first is '_') */
switch (*++sym->current)
{
case '0': do_after = 1; break;
case '1': do_after = 2; break;
case '2': function_name = "operator new"; break;
case '3': function_name = "operator delete"; break;
case '4': function_name = "operator="; break;
case '5': function_name = "operator>>"; break;
case '6': function_name = "operator<<"; break;
case '7': function_name = "operator!"; break;
case '8': function_name = "operator=="; break;
case '9': function_name = "operator!="; break;
case 'A': function_name = "operator[]"; break;
case 'B': function_name = "operator "; do_after = 3; break;
case 'C': function_name = "operator->"; break;
case 'D': function_name = "operator*"; break;
case 'E': function_name = "operator++"; break;
case 'F': function_name = "operator--"; break;
case 'G': function_name = "operator-"; break;
case 'H': function_name = "operator+"; break;
case 'I': function_name = "operator&"; break;
case 'J': function_name = "operator->*"; break;
case 'K': function_name = "operator/"; break;
case 'L': function_name = "operator%"; break;
case 'M': function_name = "operator<"; break;
case 'N': function_name = "operator<="; break;
case 'O': function_name = "operator>"; break;
case 'P': function_name = "operator>="; break;
case 'Q': function_name = "operator,"; break;
case 'R': function_name = "operator()"; break;
case 'S': function_name = "operator~"; break;
case 'T': function_name = "operator^"; break;
case 'U': function_name = "operator|"; break;
case 'V': function_name = "operator&&"; break;
case 'W': function_name = "operator||"; break;
case 'X': function_name = "operator*="; break;
case 'Y': function_name = "operator+="; break;
case 'Z': function_name = "operator-="; break;
case '_':
switch (*++sym->current)
{
case '0': function_name = "operator/="; break;
case '1': function_name = "operator%="; break;
case '2': function_name = "operator>>="; break;
case '3': function_name = "operator<<="; break;
case '4': function_name = "operator&="; break;
case '5': function_name = "operator|="; break;
case '6': function_name = "operator^="; break;
case '7': function_name = "`vftable'"; break;
case '8': function_name = "`vbtable'"; break;
case '9': function_name = "`vcall'"; break;
case 'A': function_name = "`typeof'"; break;
case 'B': function_name = "`local static guard'"; break;
case 'C': function_name = "`string'"; do_after = 4; break;
case 'D': function_name = "`vbase destructor'"; break;
case 'E': function_name = "`vector deleting destructor'"; break;
case 'F': function_name = "`default constructor closure'"; break;
case 'G': function_name = "`scalar deleting destructor'"; break;
case 'H': function_name = "`vector constructor iterator'"; break;
case 'I': function_name = "`vector destructor iterator'"; break;
case 'J': function_name = "`vector vbase constructor iterator'"; break;
case 'K': function_name = "`virtual displacement map'"; break;
case 'L': function_name = "`eh vector constructor iterator'"; break;
case 'M': function_name = "`eh vector destructor iterator'"; break;
case 'N': function_name = "`eh vector vbase constructor iterator'"; break;
case 'O': function_name = "`copy constructor closure'"; break;
case 'S': function_name = "`local vftable'"; break;
case 'T': function_name = "`local vftable constructor closure'"; break;
case 'U': function_name = "operator new[]"; break;
case 'V': function_name = "operator delete[]"; break;
case 'X': function_name = "`placement delete closure'"; break;
case 'Y': function_name = "`placement delete[] closure'"; break;
default:
ERR("Unknown operator: _%c\n", *sym->current);
return FALSE;
}
break;
default:
/* FIXME: Other operators */
ERR("Unknown operator: %c\n", *sym->current);
return FALSE;
}
sym->current++;
switch (do_after)
{
case 1: case 2:
sym->stack.num = sym->stack.max = 1;
sym->stack.elts[0] = dashed_null;
break;
case 4:
sym->result = (char*)function_name;
ret = TRUE;
goto done;
default:
str_array_push(sym, function_name, -1, &sym->stack);
break;
}
sym->stack.start = 1;
}
else if (*sym->current == '$')
{
/* Strange construct, it's a name with a template argument list
and that's all. */
sym->current++;
sym->result = get_template_name(sym);
ret = TRUE;
goto done;
}
/* Either a class name, or '@' if the symbol is not a class member */
if (*sym->current != '@')
{
/* Class the function is associated with, terminated by '@@' */
if (!get_class(sym)) goto done;
}
else sym->current++;
switch (do_after)
{
case 0: default: break;
case 1: case 2:
/* it's time to set the member name for ctor & dtor */
if (sym->stack.num <= 1) goto done;
if (do_after == 1)
sym->stack.elts[0] = sym->stack.elts[1];
else
sym->stack.elts[0] = str_printf(sym, "~%s", sym->stack.elts[1]);
/* ctors and dtors don't have return type */
sym->flags |= UNDNAME_NO_FUNCTION_RETURNS;
break;
case 3:
sym->flags &= ~UNDNAME_NO_FUNCTION_RETURNS;
break;
}
/* Function/Data type and access level */
if (*sym->current >= '0' && *sym->current <= '7')
ret = handle_data(sym);
else if (*sym->current >= 'A' && *sym->current <= 'Z')
ret = handle_method(sym, do_after == 3);
else ret = FALSE;
done:
if (ret) assert(sym->result);
else WARN("Failed at %s\n", sym->current);
return ret;
}
/*********************************************************************
* __unDNameEx (MSVCRT.@)
*
* Demangle a C++ identifier.
*
* PARAMS
* buffer [O] If not NULL, the place to put the demangled string
* mangled [I] Mangled name of the function
* buflen [I] Length of buffer
* memget [I] Function to allocate memory with
* memfree [I] Function to free memory with
* unknown [?] Unknown, possibly a call back
* flags [I] Flags determining demangled format
*
* RETURNS
* Success: A string pointing to the unmangled name, allocated with memget.
* Failure: NULL.
*/
char* CDECL __unDNameEx(char* buffer, const char* mangled, int buflen,
malloc_func_t memget, free_func_t memfree,
void* unknown, unsigned short int flags)
{
struct parsed_symbol sym;
const char* result;
TRACE("(%p,%s,%d,%p,%p,%p,%x)\n",
buffer, mangled, buflen, memget, memfree, unknown, flags);
/* The flags details is not documented by MS. However, it looks exactly
* like the UNDNAME_ manifest constants from imagehlp.h and dbghelp.h
* So, we copied those (on top of the file)
*/
memset(&sym, 0, sizeof(struct parsed_symbol));
if (flags & UNDNAME_NAME_ONLY)
flags |= UNDNAME_NO_FUNCTION_RETURNS | UNDNAME_NO_ACCESS_SPECIFIERS |
UNDNAME_NO_MEMBER_TYPE | UNDNAME_NO_ALLOCATION_LANGUAGE |
UNDNAME_NO_COMPLEX_TYPE;
sym.flags = flags;
sym.mem_alloc_ptr = memget;
sym.mem_free_ptr = memfree;
sym.current = mangled;
result = symbol_demangle(&sym) ? sym.result : mangled;
if (buffer && buflen)
{
lstrcpynA( buffer, result, buflen);
}
else
{
buffer = memget(strlen(result) + 1);
if (buffer) strcpy(buffer, result);
}
und_free_all(&sym);
return buffer;
}
/*********************************************************************
* __unDName (MSVCRT.@)
*/
char* CDECL __unDName(char* buffer, const char* mangled, int buflen,
malloc_func_t memget, free_func_t memfree,
unsigned short int flags)
{
return __unDNameEx(buffer, mangled, buflen, memget, memfree, NULL, flags);
}
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