Subversion Repositories openrisc_2011-10-31

%{ /* deffilep.y - parser for .def files */

/*   Copyright 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007

     Free Software Foundation, Inc.

     This file is part of GNU Binutils.

     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, write to the Free Software

     Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

     MA 02110-1301, USA.  */

#include "sysdep.h"

#include "libiberty.h"

#include "safe-ctype.h"

#include "bfd.h"

#include "ld.h"

#include "ldmisc.h"

#include "deffile.h"

#define TRACE 0

#define ROUND_UP(a, b) (((a)+((b)-1))&~((b)-1))

/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),

   as well as gratuitiously global symbol names, so we can have multiple

   yacc generated parsers in ld.  Note that these are only the variables

   produced by yacc.  If other parser generators (bison, byacc, etc) produce

   additional global names that conflict at link time, then those parser

   generators need to be fixed instead of adding those names to this list.  */

#define yymaxdepth def_maxdepth

#define yyparse def_parse

#define yylex   def_lex

#define yyerror def_error

#define yylval  def_lval

#define yychar  def_char

#define yydebug def_debug

#define yypact  def_pact

#define yyr1    def_r1

#define yyr2    def_r2

#define yydef   def_def

#define yychk   def_chk

#define yypgo   def_pgo

#define yyact   def_act

#define yyexca  def_exca

#define yyerrflag def_errflag

#define yynerrs def_nerrs

#define yyps    def_ps

#define yypv    def_pv

#define yys     def_s

#define yy_yys  def_yys

#define yystate def_state

#define yytmp   def_tmp

#define yyv     def_v

#define yy_yyv  def_yyv

#define yyval   def_val

#define yylloc  def_lloc

#define yyreds  def_reds                /* With YYDEBUG defined.  */

#define yytoks  def_toks                /* With YYDEBUG defined.  */

#define yylhs   def_yylhs

#define yylen   def_yylen

#define yydefred def_yydefred

#define yydgoto def_yydgoto

#define yysindex def_yysindex

#define yyrindex def_yyrindex

#define yygindex def_yygindex

#define yytable  def_yytable

#define yycheck  def_yycheck

static void def_description (const char *);

static void def_exports (const char *, const char *, int, int);

static void def_heapsize (int, int);

static void def_import (const char *, const char *, const char *, const char *,

                        int);

static void def_image_name (const char *, int, int);

static void def_section (const char *, int);

static void def_section_alt (const char *, const char *);

static void def_stacksize (int, int);

static void def_version (int, int);

static void def_directive (char *);

static int def_parse (void);

static int def_error (const char *);

static int def_lex (void);

static int lex_forced_token = 0;

static const char *lex_parse_string = 0;

static const char *lex_parse_string_end = 0;

%}

%union {

  char *id;

  int number;

};

%token NAME LIBRARY DESCRIPTION STACKSIZE HEAPSIZE CODE DATAU DATAL

%token SECTIONS EXPORTS IMPORTS VERSIONK BASE CONSTANTU CONSTANTL

%token PRIVATEU PRIVATEL

%token READ WRITE EXECUTE SHARED NONAMEU NONAMEL DIRECTIVE

%token  ID

%token  NUMBER

%type   opt_base opt_ordinal

%type   attr attr_list opt_number exp_opt_list exp_opt

%type   opt_name opt_equal_name dot_name

%%

start: start command

        | command

        ;

command:

                NAME opt_name opt_base { def_image_name ($2, $3, 0); }

        |       LIBRARY opt_name opt_base { def_image_name ($2, $3, 1); }

        |       DESCRIPTION ID { def_description ($2);}

        |       STACKSIZE NUMBER opt_number { def_stacksize ($2, $3);}

        |       HEAPSIZE NUMBER opt_number { def_heapsize ($2, $3);}

        |       CODE attr_list { def_section ("CODE", $2);}

        |       DATAU attr_list  { def_section ("DATA", $2);}

        |       SECTIONS seclist

        |       EXPORTS explist

        |       IMPORTS implist

        |       VERSIONK NUMBER { def_version ($2, 0);}

        |       VERSIONK NUMBER '.' NUMBER { def_version ($2, $4);}

        |       DIRECTIVE ID { def_directive ($2);}

        ;

explist:

                /* EMPTY */

        |       expline

        |       explist expline

        ;

expline:

                /* The opt_comma is necessary to support both the usual

                  DEF file syntax as well as .drectve syntax which

                  mandates ,.  */

                dot_name opt_equal_name opt_ordinal opt_comma exp_opt_list

                        { def_exports ($1, $2, $3, $5); }

        ;

exp_opt_list:

                /* The opt_comma is necessary to support both the usual

                   DEF file syntax as well as .drectve syntax which

                   allows for comma separated opt list.  */

                exp_opt opt_comma exp_opt_list { $$ = $1 | $3; }

        |       { $$ = 0; }

        ;

exp_opt:

                NONAMEU         { $$ = 1; }

        |       NONAMEL         { $$ = 1; }

        |       CONSTANTU       { $$ = 2; }

        |       CONSTANTL       { $$ = 2; }

        |       DATAU           { $$ = 4; }

        |       DATAL           { $$ = 4; }

        |       PRIVATEU        { $$ = 8; }

        |       PRIVATEL        { $$ = 8; }

        ;

implist:

                implist impline

        |       impline

        ;

impline:

               ID '=' ID '.' ID '.' ID     { def_import ($1, $3, $5, $7, -1); }

       |       ID '=' ID '.' ID '.' NUMBER { def_import ($1, $3, $5,  0, $7); }

       |       ID '=' ID '.' ID            { def_import ($1, $3,  0, $5, -1); }

       |       ID '=' ID '.' NUMBER        { def_import ($1, $3,  0,  0, $5); }

       |       ID '.' ID '.' ID            { def_import ( 0, $1, $3, $5, -1); }

       |       ID '.' ID                   { def_import ( 0, $1,  0, $3, -1); }

;

seclist:

                seclist secline

        |       secline

        ;

secline:

        ID attr_list { def_section ($1, $2);}

        | ID ID { def_section_alt ($1, $2);}

        ;

attr_list:

        attr_list opt_comma attr { $$ = $1 | $3; }

        | attr { $$ = $1; }

        ;

opt_comma:

        ','

        |

        ;

opt_number: ',' NUMBER { $$=$2;}

        |          { $$=-1;}

        ;

attr:

                READ    { $$ = 1;}

        |       WRITE   { $$ = 2;}

        |       EXECUTE { $$=4;}

        |       SHARED  { $$=8;}

        ;

opt_name: ID            { $$ = $1; }

        | ID '.' ID

          {

            char *name = xmalloc (strlen ($1) + 1 + strlen ($3) + 1);

            sprintf (name, "%s.%s", $1, $3);

            $$ = name;

          }

        |               { $$ = ""; }

        ;

opt_ordinal:

          '@' NUMBER     { $$ = $2;}

        |                { $$ = -1;}

        ;

opt_equal_name:

          '=' dot_name  { $$ = $2; }

        |               { $$ =  0; }

        ;

opt_base: BASE  '=' NUMBER      { $$ = $3;}

        |       { $$ = -1;}

        ;

dot_name: ID            { $$ = $1; }

        | dot_name '.' ID

          {

            char *name = xmalloc (strlen ($1) + 1 + strlen ($3) + 1);

            sprintf (name, "%s.%s", $1, $3);

            $$ = name;

          }

        ;

%%

/*****************************************************************************

 API

 *****************************************************************************/

static FILE *the_file;

static const char *def_filename;

static int linenumber;

static def_file *def;

static int saw_newline;

struct directive

  {

    struct directive *next;

    char *name;

    int len;

  };

static struct directive *directives = 0;

def_file *

def_file_empty (void)

{

  def_file *rv = xmalloc (sizeof (def_file));

  memset (rv, 0, sizeof (def_file));

  rv->is_dll = -1;

  rv->base_address = (bfd_vma) -1;

  rv->stack_reserve = rv->stack_commit = -1;

  rv->heap_reserve = rv->heap_commit = -1;

  rv->version_major = rv->version_minor = -1;

  return rv;

}

def_file *

def_file_parse (const char *filename, def_file *add_to)

{

  struct directive *d;

  the_file = fopen (filename, "r");

  def_filename = filename;

  linenumber = 1;

  if (!the_file)

    {

      perror (filename);

      return 0;

    }

  if (add_to)

    {

      def = add_to;

    }

  else

    {

      def = def_file_empty ();

    }

  saw_newline = 1;

  if (def_parse ())

    {

      def_file_free (def);

      fclose (the_file);

      return 0;

    }

  fclose (the_file);

  for (d = directives; d; d = d->next)

    {

#if TRACE

      printf ("Adding directive %08x `%s'\n", d->name, d->name);

#endif

      def_file_add_directive (def, d->name, d->len);

    }

  return def;

}

void

def_file_free (def_file *def)

{

  int i;

  if (!def)

    return;

  if (def->name)

    free (def->name);

  if (def->description)

    free (def->description);

  if (def->section_defs)

    {

      for (i = 0; i < def->num_section_defs; i++)

        {

          if (def->section_defs[i].name)

            free (def->section_defs[i].name);

          if (def->section_defs[i].class)

            free (def->section_defs[i].class);

        }

      free (def->section_defs);

    }

  if (def->exports)

    {

      for (i = 0; i < def->num_exports; i++)

        {

          if (def->exports[i].internal_name

              && def->exports[i].internal_name != def->exports[i].name)

            free (def->exports[i].internal_name);

          if (def->exports[i].name)

            free (def->exports[i].name);

        }

      free (def->exports);

    }

  if (def->imports)

    {

      for (i = 0; i < def->num_imports; i++)

        {

          if (def->imports[i].internal_name

              && def->imports[i].internal_name != def->imports[i].name)

            free (def->imports[i].internal_name);

          if (def->imports[i].name)

            free (def->imports[i].name);

        }

      free (def->imports);

    }

  while (def->modules)

    {

      def_file_module *m = def->modules;

      def->modules = def->modules->next;

      free (m);

    }

  free (def);

}

#ifdef DEF_FILE_PRINT

void

def_file_print (FILE *file, def_file *def)

{

  int i;

  fprintf (file, ">>>> def_file at 0x%08x\n", def);

  if (def->name)

    fprintf (file, "  name: %s\n", def->name ? def->name : "(unspecified)");

  if (def->is_dll != -1)

    fprintf (file, "  is dll: %s\n", def->is_dll ? "yes" : "no");

  if (def->base_address != (bfd_vma) -1)

    fprintf (file, "  base address: 0x%08x\n", def->base_address);

  if (def->description)

    fprintf (file, "  description: `%s'\n", def->description);

  if (def->stack_reserve != -1)

    fprintf (file, "  stack reserve: 0x%08x\n", def->stack_reserve);

  if (def->stack_commit != -1)

    fprintf (file, "  stack commit: 0x%08x\n", def->stack_commit);

  if (def->heap_reserve != -1)

    fprintf (file, "  heap reserve: 0x%08x\n", def->heap_reserve);

  if (def->heap_commit != -1)

    fprintf (file, "  heap commit: 0x%08x\n", def->heap_commit);

  if (def->num_section_defs > 0)

    {

      fprintf (file, "  section defs:\n");

      for (i = 0; i < def->num_section_defs; i++)

        {

          fprintf (file, "    name: `%s', class: `%s', flags:",

                   def->section_defs[i].name, def->section_defs[i].class);

          if (def->section_defs[i].flag_read)

            fprintf (file, " R");

          if (def->section_defs[i].flag_write)

            fprintf (file, " W");

          if (def->section_defs[i].flag_execute)

            fprintf (file, " X");

          if (def->section_defs[i].flag_shared)

            fprintf (file, " S");

          fprintf (file, "\n");

        }

    }

  if (def->num_exports > 0)

    {

      fprintf (file, "  exports:\n");

      for (i = 0; i < def->num_exports; i++)

        {

          fprintf (file, "    name: `%s', int: `%s', ordinal: %d, flags:",

                   def->exports[i].name, def->exports[i].internal_name,

                   def->exports[i].ordinal);

          if (def->exports[i].flag_private)

            fprintf (file, " P");

          if (def->exports[i].flag_constant)

            fprintf (file, " C");

          if (def->exports[i].flag_noname)

            fprintf (file, " N");

          if (def->exports[i].flag_data)

            fprintf (file, " D");

          fprintf (file, "\n");

        }

    }

  if (def->num_imports > 0)

    {

      fprintf (file, "  imports:\n");

      for (i = 0; i < def->num_imports; i++)

        {

          fprintf (file, "    int: %s, from: `%s', name: `%s', ordinal: %d\n",

                   def->imports[i].internal_name,

                   def->imports[i].module,

                   def->imports[i].name,

                   def->imports[i].ordinal);

        }

    }

  if (def->version_major != -1)

    fprintf (file, "  version: %d.%d\n", def->version_major, def->version_minor);

  fprintf (file, "<<<< def_file at 0x%08x\n", def);

}

#endif

def_file_export *

def_file_add_export (def_file *def,

                     const char *external_name,

                     const char *internal_name,

                     int ordinal)

{

  def_file_export *e;

  int max_exports = ROUND_UP(def->num_exports, 32);

  if (def->num_exports >= max_exports)

    {

      max_exports = ROUND_UP(def->num_exports + 1, 32);

      if (def->exports)

        def->exports = xrealloc (def->exports,

                                 max_exports * sizeof (def_file_export));

      else

        def->exports = xmalloc (max_exports * sizeof (def_file_export));

    }

  e = def->exports + def->num_exports;

  memset (e, 0, sizeof (def_file_export));

  if (internal_name && !external_name)

    external_name = internal_name;

  if (external_name && !internal_name)

    internal_name = external_name;

  e->name = xstrdup (external_name);

  e->internal_name = xstrdup (internal_name);

  e->ordinal = ordinal;

  def->num_exports++;

  return e;

}

def_file_module *

def_get_module (def_file *def, const char *name)

{

  def_file_module *s;

  for (s = def->modules; s; s = s->next)

    if (strcmp (s->name, name) == 0)

      return s;

  return NULL;

}

static def_file_module *

def_stash_module (def_file *def, const char *name)

{

  def_file_module *s;

  if ((s = def_get_module (def, name)) != NULL)

      return s;

  s = xmalloc (sizeof (def_file_module) + strlen (name));

  s->next = def->modules;

  def->modules = s;

  s->user_data = 0;

  strcpy (s->name, name);

  return s;

}

def_file_import *

def_file_add_import (def_file *def,

                     const char *name,

                     const char *module,

                     int ordinal,

                     const char *internal_name)

{

  def_file_import *i;

  int max_imports = ROUND_UP (def->num_imports, 16);

  if (def->num_imports >= max_imports)

    {

      max_imports = ROUND_UP (def->num_imports+1, 16);

      if (def->imports)

        def->imports = xrealloc (def->imports,

                                 max_imports * sizeof (def_file_import));

      else

        def->imports = xmalloc (max_imports * sizeof (def_file_import));

    }

  i = def->imports + def->num_imports;

  memset (i, 0, sizeof (def_file_import));

  if (name)

    i->name = xstrdup (name);

  if (module)

    i->module = def_stash_module (def, module);

  i->ordinal = ordinal;

  if (internal_name)

    i->internal_name = xstrdup (internal_name);

  else

    i->internal_name = i->name;

  def->num_imports++;

  return i;

}

struct

{

  char *param;

  int token;

}

diropts[] =

{

  { "-heap", HEAPSIZE },

  { "-stack", STACKSIZE },

  { "-attr", SECTIONS },

  { "-export", EXPORTS },

  { 0, 0 }

};

void

def_file_add_directive (def_file *my_def, const char *param, int len)

{

  def_file *save_def = def;

  const char *pend = param + len;

  char * tend = (char *) param;

  int i;

  def = my_def;

  while (param < pend)

    {

      while (param < pend

             && (ISSPACE (*param) || *param == '\n' || *param == 0))

        param++;

      if (param == pend)

        break;

      /* Scan forward until we encounter any of:

          - the end of the buffer

          - the start of a new option

          - a newline seperating options

          - a NUL seperating options.  */

      for (tend = (char *) (param + 1);

           (tend < pend

            && !(ISSPACE (tend[-1]) && *tend == '-')

            && *tend != '\n' && *tend != 0);

           tend++)

        ;

      for (i = 0; diropts[i].param; i++)

        {

          int len = strlen (diropts[i].param);

          if (tend - param >= len

              && strncmp (param, diropts[i].param, len) == 0

              && (param[len] == ':' || param[len] == ' '))

            {

              lex_parse_string_end = tend;

              lex_parse_string = param + len + 1;

              lex_forced_token = diropts[i].token;

              saw_newline = 0;

              if (def_parse ())

                continue;

              break;

            }

        }

      if (!diropts[i].param)

        {

          char saved;

          saved = * tend;

          * tend = 0;

          /* xgettext:c-format */

          einfo (_("Warning: .drectve `%s' unrecognized\n"), param);

          * tend = saved;

        }

      lex_parse_string = 0;

      param = tend;

    }

  def = save_def;

}

/* Parser Callbacks.  */

static void

def_image_name (const char *name, int base, int is_dll)

{

  /* If a LIBRARY or NAME statement is specified without a name, there is nothing

     to do here.  We retain the output filename specified on command line.  */

  if (*name)

    {

      const char* image_name = lbasename (name);

      if (image_name != name)

        einfo ("%s:%d: Warning: path components stripped from %s, '%s'\n",

               def_filename, linenumber, is_dll ? "LIBRARY" : "NAME",

               name);

      if (def->name)

        free (def->name);

      /* Append the default suffix, if none specified.  */

      if (strchr (image_name, '.') == 0)

        {

          const char * suffix = is_dll ? ".dll" : ".exe";

          def->name = xmalloc (strlen (image_name) + strlen (suffix) + 1);

          sprintf (def->name, "%s%s", image_name, suffix);

        }

      else

        def->name = xstrdup (image_name);

    }

  /* Honor a BASE address statement, even if LIBRARY string is empty.  */

  def->base_address = base;

  def->is_dll = is_dll;

}

static void

def_description (const char *text)

{

  int len = def->description ? strlen (def->description) : 0;

  len += strlen (text) + 1;

  if (def->description)

    {

      def->description = xrealloc (def->description, len);

      strcat (def->description, text);

    }

  else

    {

      def->description = xmalloc (len);

      strcpy (def->description, text);

    }

}

static void

def_stacksize (int reserve, int commit)

{

  def->stack_reserve = reserve;

  def->stack_commit = commit;

}

static void

def_heapsize (int reserve, int commit)

{

  def->heap_reserve = reserve;

  def->heap_commit = commit;

}

static void

def_section (const char *name, int attr)

{

  def_file_section *s;

  int max_sections = ROUND_UP (def->num_section_defs, 4);

  if (def->num_section_defs >= max_sections)

    {

      max_sections = ROUND_UP (def->num_section_defs+1, 4);

      if (def->section_defs)

        def->section_defs = xrealloc (def->section_defs,

                                      max_sections * sizeof (def_file_import));

      else

        def->section_defs = xmalloc (max_sections * sizeof (def_file_import));

    }

  s = def->section_defs + def->num_section_defs;

  memset (s, 0, sizeof (def_file_section));

  s->name = xstrdup (name);

  if (attr & 1)

    s->flag_read = 1;

  if (attr & 2)

    s->flag_write = 1;

  if (attr & 4)

    s->flag_execute = 1;

  if (attr & 8)

    s->flag_shared = 1;

  def->num_section_defs++;

}

static void

def_section_alt (const char *name, const char *attr)

{

  int aval = 0;

  for (; *attr; attr++)

    {

      switch (*attr)

        {

        case 'R':

        case 'r':

          aval |= 1;

          break;

        case 'W':

        case 'w':

          aval |= 2;

          break;

        case 'X':

        case 'x':

          aval |= 4;

          break;

        case 'S':

        case 's':

          aval |= 8;

          break;

        }

    }

  def_section (name, aval);

}

static void

def_exports (const char *external_name,

             const char *internal_name,

             int ordinal,

             int flags)

{

  def_file_export *dfe;

  if (!internal_name && external_name)

    internal_name = external_name;

#if TRACE

  printf ("def_exports, ext=%s int=%s\n", external_name, internal_name);

#endif

  dfe = def_file_add_export (def, external_name, internal_name, ordinal);

  if (flags & 1)

    dfe->flag_noname = 1;

  if (flags & 2)

    dfe->flag_constant = 1;

  if (flags & 4)

    dfe->flag_data = 1;

  if (flags & 8)

    dfe->flag_private = 1;

}

static void

def_import (const char *internal_name,

            const char *module,

            const char *dllext,

            const char *name,

            int ordinal)

{

  char *buf = 0;

  const char *ext = dllext ? dllext : "dll";

  buf = xmalloc (strlen (module) + strlen (ext) + 2);

  sprintf (buf, "%s.%s", module, ext);

  module = buf;

  def_file_add_import (def, name, module, ordinal, internal_name);

  if (buf)

    free (buf);

}

static void

def_version (int major, int minor)

{

  def->version_major = major;

  def->version_minor = minor;

}

static void

def_directive (char *str)

{

  struct directive *d = xmalloc (sizeof (struct directive));

  d->next = directives;

  directives = d;

  d->name = xstrdup (str);

  d->len = strlen (str);

}

static int

def_error (const char *err)

{

  einfo ("%P: %s:%d: %s\n",

         def_filename ? def_filename : "", linenumber, err);

  return 0;

}

/* Lexical Scanner.  */

#undef TRACE

#define TRACE 0

/* Never freed, but always reused as needed, so no real leak.  */

static char *buffer = 0;

static int buflen = 0;

static int bufptr = 0;

static void

put_buf (char c)

{

  if (bufptr == buflen)

    {

      buflen += 50;             /* overly reasonable, eh?  */

      if (buffer)

        buffer = xrealloc (buffer, buflen + 1);

      else

        buffer = xmalloc (buflen + 1);

    }

  buffer[bufptr++] = c;

  buffer[bufptr] = 0;           /* not optimal, but very convenient.  */

}

static struct

{

  char *name;

  int token;

}

tokens[] =

{

  { "BASE", BASE },

  { "CODE", CODE },

  { "CONSTANT", CONSTANTU },

  { "constant", CONSTANTL },

  { "DATA", DATAU },

  { "data", DATAL },

  { "DESCRIPTION", DESCRIPTION },

  { "DIRECTIVE", DIRECTIVE },

  { "EXECUTE", EXECUTE },

  { "EXPORTS", EXPORTS },

  { "HEAPSIZE", HEAPSIZE },

  { "IMPORTS", IMPORTS },

  { "LIBRARY", LIBRARY },

  { "NAME", NAME },

  { "NONAME", NONAMEU },

  { "noname", NONAMEL },

  { "PRIVATE", PRIVATEU },

  { "private", PRIVATEL },

  { "READ", READ },

  { "SECTIONS", SECTIONS },

  { "SEGMENTS", SECTIONS },

  { "SHARED", SHARED },

  { "STACKSIZE", STACKSIZE },

  { "VERSION", VERSIONK },

  { "WRITE", WRITE },

  { 0, 0 }

};

static int

def_getc (void)

{

  int rv;

  if (lex_parse_string)

    {

      if (lex_parse_string >= lex_parse_string_end)

        rv = EOF;

      else

        rv = *lex_parse_string++;

    }

  else

    {

      rv = fgetc (the_file);

    }

  if (rv == '\n')

    saw_newline = 1;

  return rv;

}

static int

def_ungetc (int c)

{

  if (lex_parse_string)

    {

      lex_parse_string--;

      return c;

    }

  else

    return ungetc (c, the_file);

}

static int

def_lex (void)

{