gcc/config/sol2-c.c

   1 /* Solaris support needed only by C/C++ frontends.
   2    Copyright (C) 2004, 2005  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, 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, 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   { "p",   1, STD_C89, { T89_V,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "w", "c",  NULL },
  68   { "s",   1, STD_C89, { T89_C,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "w",  "cR", NULL },
  69   { "b",   0, STD_C89, { T89_I,   BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN,  BADLEN  }, "w",   "",   &bitfield_string_type },
  70   { NULL,  0, 0, NOLENGTHS, NULL, NULL, NULL }
  71 };
  72
  73 const format_kind_info solaris_format_types[] = {
  74   { "cmn_err",  cmn_err_length_specs,  cmn_err_char_table, "", NULL,
  75     cmn_err_flag_specs, cmn_err_flag_pairs,
  76     FMT_FLAG_ARG_CONVERT|FMT_FLAG_EMPTY_PREC_OK,
  77     'w', 0, 0, 0, 'L',
  78     &integer_type_node, &integer_type_node
  79   }
  80 };
  81
  82 /* Handle #pragma align ALIGNMENT (VAR [, VAR]...)  */
  83
  84 static void
  85 solaris_pragma_align (cpp_reader *pfile ATTRIBUTE_UNUSED)
  86 {
  87   tree t, x;
  88   enum cpp_ttype ttype;
  89   HOST_WIDE_INT low;
  90
  91   if (c_lex (&x) != CPP_NUMBER
  92       || c_lex (&t) != CPP_OPEN_PAREN)
  93     {
  94       warning (0, "malformed %<#pragma align%>, ignoring");
  95       return;
  96     }
  97
  98   low = TREE_INT_CST_LOW (x);
  99   if (TREE_INT_CST_HIGH (x) != 0
 100       || (low != 1 && low != 2 && low != 4 && low != 8 && low != 16
 101           && low != 32 && low != 64 && low != 128))
 102     {
 103       warning (0, "invalid alignment for %<#pragma align%>, ignoring");
 104       return;
 105     }
 106
 107   ttype = c_lex (&t);
 108   if (ttype != CPP_NAME)
 109     {
 110       warning (0, "malformed %<#pragma align%>, ignoring");
 111       return;
 112     }
 113
 114   while (1)
 115     {
 116       tree decl = identifier_global_value (t);
 117       if (decl && DECL_P (decl))
 118         warning (0, "%<#pragma align%> must appear before the declaration of "
 119                  "%D, ignoring", decl);
 120       else
 121         solaris_pending_aligns = tree_cons (t, build_tree_list (NULL, x),
 122                                             solaris_pending_aligns);
 123
 124       ttype = c_lex (&t);
 125       if (ttype == CPP_COMMA)
 126         {
 127           ttype = c_lex (&t);
 128           if (ttype != CPP_NAME)
 129             {
 130               warning (0, "malformed %<#pragma align%>");
 131               return;
 132             }
 133         }
 134       else if (ttype == CPP_CLOSE_PAREN)
 135         {
 136           if (c_lex (&t) != CPP_EOF)
 137             warning (0, "junk at end of %<#pragma align%>");
 138           return;
 139         }
 140       else
 141         {
 142           warning (0, "malformed %<#pragma align%>");
 143           return;
 144         }
 145     }
 146 }
 147
 148 /* Handle #pragma init (function [, function]...)  */
 149
 150 static void
 151 solaris_pragma_init (cpp_reader *pfile ATTRIBUTE_UNUSED)
 152 {
 153   tree t;
 154   enum cpp_ttype ttype;
 155
 156   if (c_lex (&t) != CPP_OPEN_PAREN)
 157     {
 158       warning (0, "malformed %<#pragma init%>, ignoring");
 159       return;
 160     }
 161
 162   ttype = c_lex (&t);
 163   if (ttype != CPP_NAME)
 164     {
 165       warning (0, "malformed %<#pragma init%>, ignoring");
 166       return;
 167     }
 168
 169   while (1)
 170     {
 171       tree decl = identifier_global_value (t);
 172       if (decl && DECL_P (decl))
 173         {
 174           tree init_list = build_tree_list (get_identifier ("init"),
 175                                             NULL);
 176           tree attrs = tree_cons (get_identifier ("used"), NULL, init_list);
 177           decl_attributes (&decl, attrs, 0);
 178         }
 179       else
 180         solaris_pending_inits = tree_cons (t, NULL, solaris_pending_inits);
 181
 182       ttype = c_lex (&t);
 183       if (ttype == CPP_COMMA)
 184         {
 185           ttype = c_lex (&t);
 186           if (ttype != CPP_NAME)
 187             {
 188               warning (0, "malformed %<#pragma init%>");
 189               return;
 190             }
 191         }
 192       else if (ttype == CPP_CLOSE_PAREN)
 193         {
 194           if (c_lex (&t) != CPP_EOF)
 195             warning (0, "junk at end of %<#pragma init%>");
 196           return;
 197         }
 198       else
 199         {
 200           warning (0, "malformed %<#pragma init%>");
 201           return;
 202         }
 203     }
 204 }
 205
 206 /* Handle #pragma fini (function [, function]...)  */
 207
 208 static void
 209 solaris_pragma_fini (cpp_reader *pfile ATTRIBUTE_UNUSED)
 210 {
 211   tree t;
 212   enum cpp_ttype ttype;
 213
 214   if (c_lex (&t) != CPP_OPEN_PAREN)
 215     {
 216       warning (0, "malformed %<#pragma fini%>, ignoring");
 217       return;
 218     }
 219
 220   ttype = c_lex (&t);
 221   if (ttype != CPP_NAME)
 222     {
 223       warning (0, "malformed %<#pragma fini%>, ignoring");
 224       return;
 225     }
 226
 227   while (1)
 228     {
 229       tree decl = identifier_global_value (t);
 230       if (decl && DECL_P (decl))
 231         {
 232           tree fini_list = build_tree_list (get_identifier ("fini"),
 233                                             NULL);
 234           tree attrs = tree_cons (get_identifier ("used"), NULL, fini_list);
 235           decl_attributes (&decl, attrs, 0);
 236         }
 237       else
 238         solaris_pending_finis = tree_cons (t, NULL, solaris_pending_finis);
 239
 240       ttype = c_lex (&t);
 241       if (ttype == CPP_COMMA)
 242         {
 243           ttype = c_lex (&t);
 244           if (ttype != CPP_NAME)
 245             {
 246               warning (0, "malformed %<#pragma fini%>");
 247               return;
 248             }
 249         }
 250       else if (ttype == CPP_CLOSE_PAREN)
 251         {
 252           if (c_lex (&t) != CPP_EOF)
 253             warning (0, "junk at end of %<#pragma fini%>");
 254           return;
 255         }
 256       else
 257         {
 258           warning (0, "malformed %<#pragma fini%>");
 259           return;
 260         }
 261     }
 262 }
 263
 264 /* Register Solaris-specific #pragma directives.  */
 265
 266 void
 267 solaris_register_pragmas (void)
 268 {
 269   c_register_pragma_with_expansion (0, "align", solaris_pragma_align);
 270   c_register_pragma (0, "init", solaris_pragma_init);
 271   c_register_pragma (0, "fini", solaris_pragma_fini);
 272 }