gcc/config/xm-interix.h

   1 /* Configuration for GNU compiler for processor running Interix
   2    Copyright (C) 1993, 1995, 1999, 2001 Free Software Foundation, Inc.
   3    Donn Terry, Softway Systems, Inc,
   4    from code
   5       Contributed by Douglas B. Rupp (drupp@cs.washington.edu)
   6
   7 This file is part of GNU CC.
   8
   9 GNU CC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GNU CC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GNU CC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 59 Temple Place - Suite 330,
  22 Boston, MA 02111-1307, USA.  */
  23
  24 #ifndef USG
  25 #define USG 1
  26 #endif
  27
  28 #ifndef ONLY_INT_FIELDS
  29 #ifndef __GNUC__
  30 #define ONLY_INT_FIELDS 1
  31 #endif
  32 #endif
  33
  34 /* If not compiled with GNU C, use the portable alloca.  */
  35 #ifndef __GNUC__
  36 #define USE_C_ALLOCA 1
  37 #endif
  38
  39 /* Our strategy for finding global constructors is a bit different, although
  40    not a lot. */
  41 #define DO_GLOBAL_CTORS_BODY                                            \
  42 do {                                                                    \
  43   int i;                                                                \
  44   unsigned long nptrs;                                                  \
  45   func_ptr *p;                                                          \
  46   asm(                                                                  \
  47        "     .section .ctor_head, \"rw\"\n"                             \
  48        "1:\n"                                                           \
  49        "     .text \n"                                                  \
  50        ASM_LOAD_ADDR(1b,%0)                                             \
  51        : "=r" (p) : : "cc");                                            \
  52   for (nptrs = 0; p[nptrs] != 0; nptrs++);                              \
  53   for (i = nptrs-1; i >= 0; i--)                                        \
  54     p[i] ();                                                            \
  55 } while (0)
  56
  57 #define DO_GLOBAL_DTORS_BODY                                            \
  58 do {                                                                    \
  59   func_ptr *p;                                                          \
  60   asm(                                                                  \
  61        "     .section .dtor_head, \"rw\"\n"                             \
  62        "1:\n"                                                           \
  63        "     .text \n"                                                  \
  64        ASM_LOAD_ADDR(1b,%0)                                             \
  65        : "=r" (p) : : "cc");                                            \
  66   while (*p)                                                            \
  67     {                                                                   \
  68       p++;                                                              \
  69       (*(p-1)) ();                                                      \
  70     }                                                                   \
  71 } while (0)