LCOV - code coverage report
Current view: top level - gcc/c - c-aux-info.c (source / functions) Hit Total Coverage
Test: gcc.info Lines: 3 198 1.5 %
Date: 2020-03-28 11:57:23 Functions: 1 6 16.7 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /* Generate information regarding function declarations and definitions based
       2                 :            :    on information stored in GCC's tree structure.  This code implements the
       3                 :            :    -aux-info option.
       4                 :            :    Copyright (C) 1989-2020 Free Software Foundation, Inc.
       5                 :            :    Contributed by Ron Guilmette (rfg@segfault.us.com).
       6                 :            : 
       7                 :            : This file is part of GCC.
       8                 :            : 
       9                 :            : GCC is free software; you can redistribute it and/or modify it under
      10                 :            : the terms of the GNU General Public License as published by the Free
      11                 :            : Software Foundation; either version 3, or (at your option) any later
      12                 :            : version.
      13                 :            : 
      14                 :            : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      15                 :            : WARRANTY; without even the implied warranty of MERCHANTABILITY or
      16                 :            : FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      17                 :            : for more details.
      18                 :            : 
      19                 :            : You should have received a copy of the GNU General Public License
      20                 :            : along with GCC; see the file COPYING3.  If not see
      21                 :            : <http://www.gnu.org/licenses/>.  */
      22                 :            : 
      23                 :            : #include "config.h"
      24                 :            : #include "system.h"
      25                 :            : #include "coretypes.h"
      26                 :            : #include "tm.h"
      27                 :            : #include "c-tree.h"
      28                 :            : 
      29                 :            : enum formals_style {
      30                 :            :   ansi,
      31                 :            :   k_and_r_names,
      32                 :            :   k_and_r_decls
      33                 :            : };
      34                 :            : 
      35                 :            : 
      36                 :            : static const char *data_type;
      37                 :            : 
      38                 :            : static char *affix_data_type (const char *) ATTRIBUTE_MALLOC;
      39                 :            : static const char *gen_formal_list_for_type (tree, formals_style);
      40                 :            : static const char *gen_formal_list_for_func_def (tree, formals_style);
      41                 :            : static const char *gen_type (const char *, tree, formals_style);
      42                 :            : static const char *gen_decl (tree, int, formals_style);
      43                 :            : 
      44                 :            : /* Given a string representing an entire type or an entire declaration
      45                 :            :    which only lacks the actual "data-type" specifier (at its left end),
      46                 :            :    affix the data-type specifier to the left end of the given type
      47                 :            :    specification or object declaration.
      48                 :            : 
      49                 :            :    Because of C language weirdness, the data-type specifier (which normally
      50                 :            :    goes in at the very left end) may have to be slipped in just to the
      51                 :            :    right of any leading "const" or "volatile" qualifiers (there may be more
      52                 :            :    than one).  Actually this may not be strictly necessary because it seems
      53                 :            :    that GCC (at least) accepts `<data-type> const foo;' and treats it the
      54                 :            :    same as `const <data-type> foo;' but people are accustomed to seeing
      55                 :            :    `const char *foo;' and *not* `char const *foo;' so we try to create types
      56                 :            :    that look as expected.  */
      57                 :            : 
      58                 :            : static char *
      59                 :          0 : affix_data_type (const char *param)
      60                 :            : {
      61                 :          0 :   char *const type_or_decl = ASTRDUP (param);
      62                 :          0 :   char *p = type_or_decl;
      63                 :          0 :   char *qualifiers_then_data_type;
      64                 :          0 :   char saved;
      65                 :            : 
      66                 :            :   /* Skip as many leading const's or volatile's as there are.  */
      67                 :            : 
      68                 :          0 :   for (;;)
      69                 :            :     {
      70                 :          0 :       if (!strncmp (p, "volatile ", 9))
      71                 :            :         {
      72                 :          0 :           p += 9;
      73                 :          0 :           continue;
      74                 :            :         }
      75                 :          0 :       if (!strncmp (p, "const ", 6))
      76                 :            :         {
      77                 :          0 :           p += 6;
      78                 :          0 :           continue;
      79                 :            :         }
      80                 :          0 :       break;
      81                 :            :     }
      82                 :            : 
      83                 :            :   /* p now points to the place where we can insert the data type.  We have to
      84                 :            :      add a blank after the data-type of course.  */
      85                 :            : 
      86                 :          0 :   if (p == type_or_decl)
      87                 :          0 :     return concat (data_type, " ", type_or_decl, NULL);
      88                 :            : 
      89                 :          0 :   saved = *p;
      90                 :          0 :   *p = '\0';
      91                 :          0 :   qualifiers_then_data_type = concat (type_or_decl, data_type, NULL);
      92                 :          0 :   *p = saved;
      93                 :          0 :   return reconcat (qualifiers_then_data_type,
      94                 :          0 :                    qualifiers_then_data_type, " ", p, NULL);
      95                 :            : }
      96                 :            : 
      97                 :            : /* Given a tree node which represents some "function type", generate the
      98                 :            :    source code version of a formal parameter list (of some given style) for
      99                 :            :    this function type.  Return the whole formal parameter list (including
     100                 :            :    a pair of surrounding parens) as a string.   Note that if the style
     101                 :            :    we are currently aiming for is non-ansi, then we just return a pair
     102                 :            :    of empty parens here.  */
     103                 :            : 
     104                 :            : static const char *
     105                 :          0 : gen_formal_list_for_type (tree fntype, formals_style style)
     106                 :            : {
     107                 :          0 :   const char *formal_list = "";
     108                 :          0 :   tree formal_type;
     109                 :            : 
     110                 :          0 :   if (style != ansi)
     111                 :            :     return "()";
     112                 :            : 
     113                 :          0 :   formal_type = TYPE_ARG_TYPES (fntype);
     114                 :          0 :   while (formal_type && TREE_VALUE (formal_type) != void_type_node)
     115                 :            :     {
     116                 :          0 :       const char *this_type;
     117                 :            : 
     118                 :          0 :       if (*formal_list)
     119                 :          0 :         formal_list = concat (formal_list, ", ", NULL);
     120                 :            : 
     121                 :          0 :       this_type = gen_type ("", TREE_VALUE (formal_type), ansi);
     122                 :          0 :       formal_list
     123                 :          0 :         = ((strlen (this_type))
     124                 :          0 :            ? concat (formal_list, affix_data_type (this_type), NULL)
     125                 :          0 :            : concat (formal_list, data_type, NULL));
     126                 :            : 
     127                 :          0 :       formal_type = TREE_CHAIN (formal_type);
     128                 :            :     }
     129                 :            : 
     130                 :            :   /* If we got to here, then we are trying to generate an ANSI style formal
     131                 :            :      parameters list.
     132                 :            : 
     133                 :            :      New style prototyped ANSI formal parameter lists should in theory always
     134                 :            :      contain some stuff between the opening and closing parens, even if it is
     135                 :            :      only "void".
     136                 :            : 
     137                 :            :      The brutal truth though is that there is lots of old K&R code out there
     138                 :            :      which contains declarations of "pointer-to-function" parameters and
     139                 :            :      these almost never have fully specified formal parameter lists associated
     140                 :            :      with them.  That is, the pointer-to-function parameters are declared
     141                 :            :      with just empty parameter lists.
     142                 :            : 
     143                 :            :      In cases such as these, protoize should really insert *something* into
     144                 :            :      the vacant parameter lists, but what?  It has no basis on which to insert
     145                 :            :      anything in particular.
     146                 :            : 
     147                 :            :      Here, we make life easy for protoize by trying to distinguish between
     148                 :            :      K&R empty parameter lists and new-style prototyped parameter lists
     149                 :            :      that actually contain "void".  In the latter case we (obviously) want
     150                 :            :      to output the "void" verbatim, and that what we do.  In the former case,
     151                 :            :      we do our best to give protoize something nice to insert.
     152                 :            : 
     153                 :            :      This "something nice" should be something that is still valid (when
     154                 :            :      re-compiled) but something that can clearly indicate to the user that
     155                 :            :      more typing information (for the parameter list) should be added (by
     156                 :            :      hand) at some convenient moment.
     157                 :            : 
     158                 :            :      The string chosen here is a comment with question marks in it.  */
     159                 :            : 
     160                 :          0 :   if (!*formal_list)
     161                 :            :     {
     162                 :          0 :       if (prototype_p (fntype))
     163                 :            :         /* assert (TREE_VALUE (TYPE_ARG_TYPES (fntype)) == void_type_node);  */
     164                 :            :         formal_list = "void";
     165                 :            :       else
     166                 :          0 :         formal_list = "/* ??? */";
     167                 :            :     }
     168                 :            :   else
     169                 :            :     {
     170                 :            :       /* If there were at least some parameters, and if the formals-types-list
     171                 :            :          petered out to a NULL (i.e. without being terminated by a
     172                 :            :          void_type_node) then we need to tack on an ellipsis.  */
     173                 :          0 :       if (!formal_type)
     174                 :          0 :         formal_list = concat (formal_list, ", ...", NULL);
     175                 :            :     }
     176                 :            : 
     177                 :          0 :   return concat (" (", formal_list, ")", NULL);
     178                 :            : }
     179                 :            : 
     180                 :            : /* Generate a parameter list for a function definition (in some given style).
     181                 :            : 
     182                 :            :    Note that this routine has to be separate (and different) from the code that
     183                 :            :    generates the prototype parameter lists for function declarations, because
     184                 :            :    in the case of a function declaration, all we have to go on is a tree node
     185                 :            :    representing the function's own "function type".  This can tell us the types
     186                 :            :    of all of the formal parameters for the function, but it cannot tell us the
     187                 :            :    actual *names* of each of the formal parameters.  We need to output those
     188                 :            :    parameter names for each function definition.
     189                 :            : 
     190                 :            :    This routine gets a pointer to a tree node which represents the actual
     191                 :            :    declaration of the given function, and this DECL node has a list of formal
     192                 :            :    parameter (variable) declarations attached to it.  These formal parameter
     193                 :            :    (variable) declaration nodes give us the actual names of the formal
     194                 :            :    parameters for the given function definition.
     195                 :            : 
     196                 :            :    This routine returns a string which is the source form for the entire
     197                 :            :    function formal parameter list.  */
     198                 :            : 
     199                 :            : static const char *
     200                 :          0 : gen_formal_list_for_func_def (tree fndecl, formals_style style)
     201                 :            : {
     202                 :          0 :   const char *formal_list = "";
     203                 :          0 :   tree formal_decl;
     204                 :            : 
     205                 :          0 :   formal_decl = DECL_ARGUMENTS (fndecl);
     206                 :          0 :   while (formal_decl)
     207                 :            :     {
     208                 :          0 :       const char *this_formal;
     209                 :            : 
     210                 :          0 :       if (*formal_list && ((style == ansi) || (style == k_and_r_names)))
     211                 :          0 :         formal_list = concat (formal_list, ", ", NULL);
     212                 :          0 :       this_formal = gen_decl (formal_decl, 0, style);
     213                 :          0 :       if (style == k_and_r_decls)
     214                 :          0 :         formal_list = concat (formal_list, this_formal, "; ", NULL);
     215                 :            :       else
     216                 :          0 :         formal_list = concat (formal_list, this_formal, NULL);
     217                 :          0 :       formal_decl = TREE_CHAIN (formal_decl);
     218                 :            :     }
     219                 :          0 :   if (style == ansi)
     220                 :            :     {
     221                 :          0 :       if (!DECL_ARGUMENTS (fndecl))
     222                 :          0 :         formal_list = concat (formal_list, "void", NULL);
     223                 :          0 :       if (stdarg_p (TREE_TYPE (fndecl)))
     224                 :          0 :         formal_list = concat (formal_list, ", ...", NULL);
     225                 :            :     }
     226                 :          0 :   if ((style == ansi) || (style == k_and_r_names))
     227                 :          0 :     formal_list = concat (" (", formal_list, ")", NULL);
     228                 :          0 :   return formal_list;
     229                 :            : }
     230                 :            : 
     231                 :            : /* Generate a string which is the source code form for a given type (t).  This
     232                 :            :    routine is ugly and complex because the C syntax for declarations is ugly
     233                 :            :    and complex.  This routine is straightforward so long as *no* pointer types,
     234                 :            :    array types, or function types are involved.
     235                 :            : 
     236                 :            :    In the simple cases, this routine will return the (string) value which was
     237                 :            :    passed in as the "ret_val" argument.  Usually, this starts out either as an
     238                 :            :    empty string, or as the name of the declared item (i.e. the formal function
     239                 :            :    parameter variable).
     240                 :            : 
     241                 :            :    This routine will also return with the global variable "data_type" set to
     242                 :            :    some string value which is the "basic" data-type of the given complete type.
     243                 :            :    This "data_type" string can be concatenated onto the front of the returned
     244                 :            :    string after this routine returns to its caller.
     245                 :            : 
     246                 :            :    In complicated cases involving pointer types, array types, or function
     247                 :            :    types, the C declaration syntax requires an "inside out" approach, i.e. if
     248                 :            :    you have a type which is a "pointer-to-function" type, you need to handle
     249                 :            :    the "pointer" part first, but it also has to be "innermost" (relative to
     250                 :            :    the declaration stuff for the "function" type).  Thus, is this case, you
     251                 :            :    must prepend a "(*" and append a ")" to the name of the item (i.e. formal
     252                 :            :    variable).  Then you must append and prepend the other info for the
     253                 :            :    "function type" part of the overall type.
     254                 :            : 
     255                 :            :    To handle the "innermost precedence" rules of complicated C declarators, we
     256                 :            :    do the following (in this routine).  The input parameter called "ret_val"
     257                 :            :    is treated as a "seed".  Each time gen_type is called (perhaps recursively)
     258                 :            :    some additional strings may be appended or prepended (or both) to the "seed"
     259                 :            :    string.  If yet another (lower) level of the GCC tree exists for the given
     260                 :            :    type (as in the case of a pointer type, an array type, or a function type)
     261                 :            :    then the (wrapped) seed is passed to a (recursive) invocation of gen_type()
     262                 :            :    this recursive invocation may again "wrap" the (new) seed with yet more
     263                 :            :    declarator stuff, by appending, prepending (or both).  By the time the
     264                 :            :    recursion bottoms out, the "seed value" at that point will have a value
     265                 :            :    which is (almost) the complete source version of the declarator (except
     266                 :            :    for the data_type info).  Thus, this deepest "seed" value is simply passed
     267                 :            :    back up through all of the recursive calls until it is given (as the return
     268                 :            :    value) to the initial caller of the gen_type() routine.  All that remains
     269                 :            :    to do at this point is for the initial caller to prepend the "data_type"
     270                 :            :    string onto the returned "seed".  */
     271                 :            : 
     272                 :            : static const char *
     273                 :          0 : gen_type (const char *ret_val, tree t, formals_style style)
     274                 :            : {
     275                 :          0 :   tree chain_p;
     276                 :            : 
     277                 :            :   /* If there is a typedef name for this type, use it.  */
     278                 :          0 :   if (TYPE_NAME (t) && TREE_CODE (TYPE_NAME (t)) == TYPE_DECL)
     279                 :          0 :     data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
     280                 :            :   else
     281                 :            :     {
     282                 :          0 :       switch (TREE_CODE (t))
     283                 :            :         {
     284                 :          0 :         case POINTER_TYPE:
     285                 :          0 :           if (TYPE_ATOMIC (t))
     286                 :          0 :             ret_val = concat ("_Atomic ", ret_val, NULL);
     287                 :          0 :           if (TYPE_READONLY (t))
     288                 :          0 :             ret_val = concat ("const ", ret_val, NULL);
     289                 :          0 :           if (TYPE_VOLATILE (t))
     290                 :          0 :             ret_val = concat ("volatile ", ret_val, NULL);
     291                 :            : 
     292                 :          0 :           ret_val = concat ("*", ret_val, NULL);
     293                 :            : 
     294                 :          0 :           if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE || TREE_CODE (TREE_TYPE (t)) == FUNCTION_TYPE)
     295                 :          0 :             ret_val = concat ("(", ret_val, ")", NULL);
     296                 :            : 
     297                 :          0 :           ret_val = gen_type (ret_val, TREE_TYPE (t), style);
     298                 :            : 
     299                 :          0 :           return ret_val;
     300                 :            : 
     301                 :          0 :         case ARRAY_TYPE:
     302                 :          0 :           if (!COMPLETE_TYPE_P (t) || TREE_CODE (TYPE_SIZE (t)) != INTEGER_CST)
     303                 :          0 :             ret_val = gen_type (concat (ret_val, "[]", NULL),
     304                 :          0 :                                 TREE_TYPE (t), style);
     305                 :          0 :           else if (int_size_in_bytes (t) == 0)
     306                 :          0 :             ret_val = gen_type (concat (ret_val, "[0]", NULL),
     307                 :          0 :                                 TREE_TYPE (t), style);
     308                 :            :           else
     309                 :            :             {
     310                 :          0 :               char buff[23];
     311                 :          0 :               sprintf (buff, "[" HOST_WIDE_INT_PRINT_DEC"]",
     312                 :          0 :                        int_size_in_bytes (t)
     313                 :          0 :                        / int_size_in_bytes (TREE_TYPE (t)));
     314                 :          0 :               ret_val = gen_type (concat (ret_val, buff, NULL),
     315                 :          0 :                                   TREE_TYPE (t), style);
     316                 :            :             }
     317                 :            :           break;
     318                 :            : 
     319                 :          0 :         case FUNCTION_TYPE:
     320                 :          0 :           ret_val = gen_type (concat (ret_val,
     321                 :            :                                       gen_formal_list_for_type (t, style),
     322                 :            :                                       NULL),
     323                 :          0 :                               TREE_TYPE (t), style);
     324                 :          0 :           break;
     325                 :            : 
     326                 :          0 :         case IDENTIFIER_NODE:
     327                 :          0 :           data_type = IDENTIFIER_POINTER (t);
     328                 :          0 :           break;
     329                 :            : 
     330                 :            :         /* The following three cases are complicated by the fact that a
     331                 :            :            user may do something really stupid, like creating a brand new
     332                 :            :            "anonymous" type specification in a formal argument list (or as
     333                 :            :            part of a function return type specification).  For example:
     334                 :            : 
     335                 :            :                 int f (enum { red, green, blue } color);
     336                 :            : 
     337                 :            :            In such cases, we have no name that we can put into the prototype
     338                 :            :            to represent the (anonymous) type.  Thus, we have to generate the
     339                 :            :            whole darn type specification.  Yuck!  */
     340                 :            : 
     341                 :          0 :         case RECORD_TYPE:
     342                 :          0 :           if (TYPE_NAME (t))
     343                 :          0 :             data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
     344                 :            :           else
     345                 :            :             {
     346                 :          0 :               data_type = "";
     347                 :          0 :               chain_p = TYPE_FIELDS (t);
     348                 :          0 :               while (chain_p)
     349                 :            :                 {
     350                 :          0 :                   data_type = concat (data_type, gen_decl (chain_p, 0, ansi),
     351                 :            :                                       NULL);
     352                 :          0 :                   chain_p = TREE_CHAIN (chain_p);
     353                 :          0 :                   data_type = concat (data_type, "; ", NULL);
     354                 :            :                 }
     355                 :          0 :               data_type = concat ("{ ", data_type, "}", NULL);
     356                 :            :             }
     357                 :          0 :           data_type = concat ("struct ", data_type, NULL);
     358                 :          0 :           break;
     359                 :            : 
     360                 :          0 :         case UNION_TYPE:
     361                 :          0 :           if (TYPE_NAME (t))
     362                 :          0 :             data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
     363                 :            :           else
     364                 :            :             {
     365                 :          0 :               data_type = "";
     366                 :          0 :               chain_p = TYPE_FIELDS (t);
     367                 :          0 :               while (chain_p)
     368                 :            :                 {
     369                 :          0 :                   data_type = concat (data_type, gen_decl (chain_p, 0, ansi),
     370                 :            :                                       NULL);
     371                 :          0 :                   chain_p = TREE_CHAIN (chain_p);
     372                 :          0 :                   data_type = concat (data_type, "; ", NULL);
     373                 :            :                 }
     374                 :          0 :               data_type = concat ("{ ", data_type, "}", NULL);
     375                 :            :             }
     376                 :          0 :           data_type = concat ("union ", data_type, NULL);
     377                 :          0 :           break;
     378                 :            : 
     379                 :          0 :         case ENUMERAL_TYPE:
     380                 :          0 :           if (TYPE_NAME (t))
     381                 :          0 :             data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
     382                 :            :           else
     383                 :            :             {
     384                 :          0 :               data_type = "";
     385                 :          0 :               chain_p = TYPE_VALUES (t);
     386                 :          0 :               while (chain_p)
     387                 :            :                 {
     388                 :          0 :                   data_type = concat (data_type,
     389                 :          0 :                         IDENTIFIER_POINTER (TREE_PURPOSE (chain_p)), NULL);
     390                 :          0 :                   chain_p = TREE_CHAIN (chain_p);
     391                 :          0 :                   if (chain_p)
     392                 :          0 :                     data_type = concat (data_type, ", ", NULL);
     393                 :            :                 }
     394                 :          0 :               data_type = concat ("{ ", data_type, " }", NULL);
     395                 :            :             }
     396                 :          0 :           data_type = concat ("enum ", data_type, NULL);
     397                 :          0 :           break;
     398                 :            : 
     399                 :          0 :         case TYPE_DECL:
     400                 :          0 :           data_type = IDENTIFIER_POINTER (DECL_NAME (t));
     401                 :          0 :           break;
     402                 :            : 
     403                 :          0 :         case INTEGER_TYPE:
     404                 :          0 :         case FIXED_POINT_TYPE:
     405                 :          0 :           data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
     406                 :            :           /* Normally, `unsigned' is part of the deal.  Not so if it comes
     407                 :            :              with a type qualifier.  */
     408                 :          0 :           if (TYPE_UNSIGNED (t) && TYPE_QUALS (t))
     409                 :          0 :             data_type = concat ("unsigned ", data_type, NULL);
     410                 :            :           break;
     411                 :            : 
     412                 :          0 :         case REAL_TYPE:
     413                 :          0 :           data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
     414                 :          0 :           break;
     415                 :            : 
     416                 :          0 :         case VOID_TYPE:
     417                 :          0 :           data_type = "void";
     418                 :          0 :           break;
     419                 :            : 
     420                 :          0 :         case ERROR_MARK:
     421                 :          0 :           data_type = "[ERROR]";
     422                 :          0 :           break;
     423                 :            : 
     424                 :          0 :         default:
     425                 :          0 :           gcc_unreachable ();
     426                 :            :         }
     427                 :            :     }
     428                 :          0 :   if (TYPE_ATOMIC (t))
     429                 :          0 :     ret_val = concat ("_Atomic ", ret_val, NULL);
     430                 :          0 :   if (TYPE_READONLY (t))
     431                 :          0 :     ret_val = concat ("const ", ret_val, NULL);
     432                 :          0 :   if (TYPE_VOLATILE (t))
     433                 :          0 :     ret_val = concat ("volatile ", ret_val, NULL);
     434                 :          0 :   if (TYPE_RESTRICT (t))
     435                 :          0 :     ret_val = concat ("restrict ", ret_val, NULL);
     436                 :            :   return ret_val;
     437                 :            : }
     438                 :            : 
     439                 :            : /* Generate a string (source) representation of an entire entity declaration
     440                 :            :    (using some particular style for function types).
     441                 :            : 
     442                 :            :    The given entity may be either a variable or a function.
     443                 :            : 
     444                 :            :    If the "is_func_definition" parameter is nonzero, assume that the thing
     445                 :            :    we are generating a declaration for is a FUNCTION_DECL node which is
     446                 :            :    associated with a function definition.  In this case, we can assume that
     447                 :            :    an attached list of DECL nodes for function formal arguments is present.  */
     448                 :            : 
     449                 :            : static const char *
     450                 :          0 : gen_decl (tree decl, int is_func_definition, formals_style style)
     451                 :            : {
     452                 :          0 :   const char *ret_val;
     453                 :            : 
     454                 :          0 :   if (DECL_NAME (decl))
     455                 :          0 :     ret_val = IDENTIFIER_POINTER (DECL_NAME (decl));
     456                 :            :   else
     457                 :            :     ret_val = "";
     458                 :            : 
     459                 :            :   /* If we are just generating a list of names of formal parameters, we can
     460                 :            :      simply return the formal parameter name (with no typing information
     461                 :            :      attached to it) now.  */
     462                 :            : 
     463                 :          0 :   if (style == k_and_r_names)
     464                 :            :     return ret_val;
     465                 :            : 
     466                 :            :   /* Note that for the declaration of some entity (either a function or a
     467                 :            :      data object, like for instance a parameter) if the entity itself was
     468                 :            :      declared as either const or volatile, then const and volatile properties
     469                 :            :      are associated with just the declaration of the entity, and *not* with
     470                 :            :      the `type' of the entity.  Thus, for such declared entities, we have to
     471                 :            :      generate the qualifiers here.  */
     472                 :            : 
     473                 :          0 :   if (TREE_THIS_VOLATILE (decl))
     474                 :          0 :     ret_val = concat ("volatile ", ret_val, NULL);
     475                 :          0 :   if (TREE_READONLY (decl))
     476                 :          0 :     ret_val = concat ("const ", ret_val, NULL);
     477                 :            : 
     478                 :          0 :   data_type = "";
     479                 :            : 
     480                 :            :   /* For FUNCTION_DECL nodes, there are two possible cases here.  First, if
     481                 :            :      this FUNCTION_DECL node was generated from a function "definition", then
     482                 :            :      we will have a list of DECL_NODE's, one for each of the function's formal
     483                 :            :      parameters.  In this case, we can print out not only the types of each
     484                 :            :      formal, but also each formal's name.  In the second case, this
     485                 :            :      FUNCTION_DECL node came from an actual function declaration (and *not*
     486                 :            :      a definition).  In this case, we do nothing here because the formal
     487                 :            :      argument type-list will be output later, when the "type" of the function
     488                 :            :      is added to the string we are building.  Note that the ANSI-style formal
     489                 :            :      parameter list is considered to be a (suffix) part of the "type" of the
     490                 :            :      function.  */
     491                 :            : 
     492                 :          0 :   if (TREE_CODE (decl) == FUNCTION_DECL && is_func_definition)
     493                 :            :     {
     494                 :          0 :       ret_val = concat (ret_val, gen_formal_list_for_func_def (decl, ansi),
     495                 :            :                         NULL);
     496                 :            : 
     497                 :            :       /* Since we have already added in the formals list stuff, here we don't
     498                 :            :          add the whole "type" of the function we are considering (which
     499                 :            :          would include its parameter-list info), rather, we only add in
     500                 :            :          the "type" of the "type" of the function, which is really just
     501                 :            :          the return-type of the function (and does not include the parameter
     502                 :            :          list info).  */
     503                 :            : 
     504                 :          0 :       ret_val = gen_type (ret_val, TREE_TYPE (TREE_TYPE (decl)), style);
     505                 :            :     }
     506                 :            :   else
     507                 :          0 :     ret_val = gen_type (ret_val, TREE_TYPE (decl), style);
     508                 :            : 
     509                 :          0 :   ret_val = affix_data_type (ret_val);
     510                 :            : 
     511                 :          0 :   if (TREE_CODE (decl) != FUNCTION_DECL && C_DECL_REGISTER (decl))
     512                 :          0 :     ret_val = concat ("register ", ret_val, NULL);
     513                 :          0 :   if (TREE_PUBLIC (decl))
     514                 :          0 :     ret_val = concat ("extern ", ret_val, NULL);
     515                 :          0 :   if (TREE_CODE (decl) == FUNCTION_DECL && !TREE_PUBLIC (decl))
     516                 :          0 :     ret_val = concat ("static ", ret_val, NULL);
     517                 :            : 
     518                 :            :   return ret_val;
     519                 :            : }
     520                 :            : 
     521                 :            : extern FILE *aux_info_file;
     522                 :            : 
     523                 :            : /* Generate and write a new line of info to the aux-info (.X) file.  This
     524                 :            :    routine is called once for each function declaration, and once for each
     525                 :            :    function definition (even the implicit ones).  */
     526                 :            : 
     527                 :            : void
     528                 :   30631400 : gen_aux_info_record (tree fndecl, int is_definition, int is_implicit,
     529                 :            :                      int is_prototyped)
     530                 :            : {
     531                 :   30631400 :   if (flag_gen_aux_info)
     532                 :            :     {
     533                 :          0 :       static int compiled_from_record = 0;
     534                 :          0 :       expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (fndecl));
     535                 :            : 
     536                 :            :       /* Each output .X file must have a header line.  Write one now if we
     537                 :            :          have not yet done so.  */
     538                 :            : 
     539                 :          0 :       if (!compiled_from_record++)
     540                 :            :         {
     541                 :            :           /* The first line tells which directory file names are relative to.
     542                 :            :              Currently, -aux-info works only for files in the working
     543                 :            :              directory, so just use a `.' as a placeholder for now.  */
     544                 :          0 :           fprintf (aux_info_file, "/* compiled from: . */\n");
     545                 :            :         }
     546                 :            : 
     547                 :            :       /* Write the actual line of auxiliary info.  */
     548                 :            : 
     549                 :          0 :       fprintf (aux_info_file, "/* %s:%d:%c%c */ %s;",
     550                 :            :                xloc.file, xloc.line,
     551                 :          0 :                (is_implicit) ? 'I' : (is_prototyped) ? 'N' : 'O',
     552                 :            :                (is_definition) ? 'F' : 'C',
     553                 :            :                gen_decl (fndecl, is_definition, ansi));
     554                 :            : 
     555                 :            :       /* If this is an explicit function declaration, we need to also write
     556                 :            :          out an old-style (i.e. K&R) function header, just in case the user
     557                 :            :          wants to run unprotoize.  */
     558                 :            : 
     559                 :          0 :       if (is_definition)
     560                 :            :         {
     561                 :          0 :           fprintf (aux_info_file, " /*%s %s*/",
     562                 :            :                    gen_formal_list_for_func_def (fndecl, k_and_r_names),
     563                 :            :                    gen_formal_list_for_func_def (fndecl, k_and_r_decls));
     564                 :            :         }
     565                 :            : 
     566                 :          0 :       fprintf (aux_info_file, "\n");
     567                 :            :     }
     568                 :   30631400 : }

Generated by: LCOV version 1.0

LCOV profile is generated on x86_64 machine using following configure options: configure --disable-bootstrap --enable-coverage=opt --enable-languages=c,c++,fortran,go,jit,lto --enable-host-shared. GCC test suite is run with the built compiler.