gcc/config/sol2-c.c

   1 /* Solaris support needed only by C/C++ frontends.
   2    Copyright (C) 2004  Free Software Foundation, Inc.
   3    Contributed by CodeSourcery, LLC.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tree.h"
  26 #include "tm.h"
  27 #include "tm_p.h"
  28 #include "toplev.h"
  29
  30 #include "c-format.h"
  31 #include "intl.h"
  32
  33 #include "cpplib.h"
  34 #include "c-pragma.h"
  35 #include "c-common.h"
  36
  37 /* cmn_err only accepts "l" and "ll".  */
  38 static const format_length_info cmn_err_length_specs[] =
  39 {
  40   { "l", FMT_LEN_l, STD_C89, "ll", FMT_LEN_ll, STD_C89 },
  41   { NULL, 0, 0, NULL, 0, 0 }
  42 };
  43
  44 static const format_flag_spec cmn_err_flag_specs[] =
  45 {
  46   { 'w',  0, 0, N_("field width"),     N_("field width in printf format"),     STD_C89 },
  47   { 'L',  0, 0, N_("length modifier"), N_("length modifier in printf format"), STD_C89 },
  48   { 0, 0, 0, NULL, NULL, 0 }
  49 };
  50
  51
  52 static const format_flag_pair cmn_err_flag_pairs[] =
  53 {
  54   { 0, 0, 0, 0 }
  55 };
  56
  57 static const format_char_info bitfield_string_type =
  58   { "b",   1, STD_C89, { T89_C,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "",   "cR", NULL };
  59
  60 static const format_char_info cmn_err_char_table[] =
  61 {
  62   /* C89 conversion specifiers.  */
  63   { "dD",  0, STD_C89, { T89_I,   BADLEN,  BADLEN,  T89_L,   T9L_LL,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "w",  "",   NULL },
  64   { "oOxX",0, STD_C89, { T89_UI,  BADLEN,  BADLEN,  T89_UL,  T9L_ULL, BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "w",  "",   NULL },
  65   { "u",   0, STD_C89, { T89_UI,  BADLEN,  BADLEN,  T89_UL,  T9L_ULL, BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "w",  "",   NULL },
  66   { "c",   0, STD_C89, { T89_C,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "w",  "",   NULL },
  67   { "s",   1, STD_C89, { T89_C,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "w",  "cR", NULL },
  68   { "b",   0, STD_C89, { T89_I,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "",   "",   &bitfield_string_type },
  69   { NULL,  0, 0, NOLENGTHS, NULL, NULL, NULL }
  70 };
  71
  72 const format_kind_info solaris_format_types[] = {
  73   { "cmn_err",  cmn_err_length_specs,  cmn_err_char_table, "", NULL,
  74     cmn_err_flag_specs, cmn_err_flag_pairs,
  75     FMT_FLAG_ARG_CONVERT|FMT_FLAG_EMPTY_PREC_OK,
  76     'w', 0, 0, 0, 'L',
  77     &integer_type_node, &integer_type_node
  78   }
  79 };
  80
  81 /* Handle #pragma align ALIGNMENT (VAR [, VAR]...)  */
  82
  83 static void
  84 solaris_pragma_align (cpp_reader *pfile ATTRIBUTE_UNUSED)
  85 {
  86   tree t, x;
  87   enum cpp_ttype ttype;
  88   HOST_WIDE_INT low;
  89
  90   if (c_lex (&x) != CPP_NUMBER
  91       || c_lex (&t) != CPP_OPEN_PAREN)
  92     {
  93       warning ("malformed %<#pragma align%>, ignoring");
  94       return;
  95     }
  96
  97   low = TREE_INT_CST_LOW (x);
  98   if (TREE_INT_CST_HIGH (x) != 0
  99       || (low != 1 && low != 2 && low != 4 && low != 8 && low != 16
 100           && low != 32 && low != 64 && low != 128))
 101     {
 102       warning ("invalid alignment for %<#pragma align%>, ignoring");
 103       return;
 104     }
 105
 106   ttype = c_lex (&t);
 107   if (ttype != CPP_NAME)
 108     {
 109       warning ("malformed %<#pragma align%>, ignoring");
 110       return;
 111     }
 112
 113   while (1)
 114     {
 115       tree decl = identifier_global_value (t);
 116       if (decl && TREE_CODE_CLASS (TREE_CODE (decl)) == 'd')
 117         warning ("%<#pragma align%> must appear before the declaration of "
 118                  "%D, ignoring", decl);
 119       else
 120         solaris_pending_aligns = tree_cons (t, build_tree_list (NULL, x),
 121                                             solaris_pending_aligns);
 122
 123       ttype = c_lex (&t);
 124       if (ttype == CPP_COMMA)
 125         {
 126           ttype = c_lex (&t);
 127           if (ttype != CPP_NAME)
 128             {
 129               warning ("malformed %<#pragma align%>");
 130               return;
 131             }
 132         }
 133       else if (ttype == CPP_CLOSE_PAREN)
 134         {
 135           if (c_lex (&t) != CPP_EOF)
 136             warning ("junk at end of %<#pragma align%>");
 137           return;
 138         }
 139       else
 140         {
 141           warning ("malformed %<#pragma align%>");
 142           return;
 143         }
 144     }
 145 }
 146
 147 /* Handle #pragma init (function [, function]...)  */
 148
 149 static void
 150 solaris_pragma_init (cpp_reader *pfile ATTRIBUTE_UNUSED)
 151 {
 152   tree t;
 153   enum cpp_ttype ttype;
 154
 155   if (c_lex (&t) != CPP_OPEN_PAREN)
 156     {
 157       warning ("malformed %<#pragma init%>, ignoring");
 158       return;
 159     }
 160
 161   ttype = c_lex (&t);
 162   if (ttype != CPP_NAME)
 163     {
 164       warning ("malformed %<#pragma init%>, ignoring");
 165       return;
 166     }
 167
 168   while (1)
 169     {
 170       tree decl = identifier_global_value (t);
 171       if (decl && TREE_CODE_CLASS (TREE_CODE (decl)) == 'd')
 172         {
 173           tree init_list = build_tree_list (get_identifier ("init"),
 174                                             NULL);
 175           tree attrs = tree_cons (get_identifier ("used"), NULL, init_list);
 176           decl_attributes (&decl, attrs, 0);
 177         }
 178       else
 179         solaris_pending_inits = tree_cons (t, NULL, solaris_pending_inits);
 180
 181       ttype = c_lex (&t);
 182       if (ttype == CPP_COMMA)
 183         {
 184           ttype = c_lex (&t);
 185           if (ttype != CPP_NAME)
 186             {
 187               warning ("malformed %<#pragma init%>");
 188               return;
 189             }
 190         }
 191       else if (ttype == CPP_CLOSE_PAREN)
 192         {
 193           if (c_lex (&t) != CPP_EOF)
 194             warning ("junk at end of %<#pragma init%>");
 195           return;
 196         }
 197       else
 198         {
 199           warning ("malformed %<#pragma init%>");
 200           return;
 201         }
 202     }
 203 }
 204
 205 /* Handle #pragma fini (function [, function]...)  */
 206
 207 static void
 208 solaris_pragma_fini (cpp_reader *pfile ATTRIBUTE_UNUSED)
 209 {
 210   tree t;
 211   enum cpp_ttype ttype;
 212
 213   if (c_lex (&t) != CPP_OPEN_PAREN)
 214     {
 215       warning ("malformed %<#pragma fini%>, ignoring");
 216       return;
 217     }
 218
 219   ttype = c_lex (&t);
 220   if (ttype != CPP_NAME)
 221     {
 222       warning ("malformed %<#pragma fini%>, ignoring");
 223       return;
 224     }
 225
 226   while (1)
 227     {
 228       tree decl = identifier_global_value (t);
 229       if (decl && TREE_CODE_CLASS (TREE_CODE (decl)) == 'd')
 230         {
 231           tree fini_list = build_tree_list (get_identifier ("fini"),
 232                                             NULL);
 233           tree attrs = tree_cons (get_identifier ("used"), NULL, fini_list);
 234           decl_attributes (&decl, attrs, 0);
 235         }
 236       else
 237         solaris_pending_finis = tree_cons (t, NULL, solaris_pending_finis);
 238
 239       ttype = c_lex (&t);
 240       if (ttype == CPP_COMMA)
 241         {
 242           ttype = c_lex (&t);
 243           if (ttype != CPP_NAME)
 244             {
 245               warning ("malformed %<#pragma fini%>");
 246               return;
 247             }
 248         }
 249       else if (ttype == CPP_CLOSE_PAREN)
 250         {
 251           if (c_lex (&t) != CPP_EOF)
 252             warning ("junk at end of %<#pragma fini%>");
 253           return;
 254         }
 255       else
 256         {
 257           warning ("malformed %<#pragma fini%>");
 258           return;
 259         }
 260     }
 261 }
 262
 263 /* Register Solaris-specific #pragma directives.  */
 264
 265 void
 266 solaris_register_pragmas (void)
 267 {
 268   c_register_pragma (0, "align", solaris_pragma_align);
 269   c_register_pragma (0, "init", solaris_pragma_init);
 270   c_register_pragma (0, "fini", solaris_pragma_fini);
 271 }