gcc/config/nextstep.c

   1 /* Functions for generic NeXT as target machine for GNU C compiler.
   2    Copyright (C) 1989, 1990, 1991, 1992, 1993, 1996, 1997, 1998,
   3    2000 Free Software Foundation, Inc.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC 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 GNU CC 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 GNU CC; 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 "flags.h"
  25 #include "tree.h"
  26 #include "toplev.h"
  27
  28 /* Make everything that used to go in the text section really go there.  */
  29
  30 int flag_no_mach_text_sections = 0;
  31
  32 #define OPT_STRCMP(opt) (!strncmp (opt, p, sizeof (opt)-1))
  33
  34 /* 1 if handle_pragma has been called yet.  */
  35
  36 static int pragma_initialized;
  37
  38 /* Initial setting of `optimize'.  */
  39
  40 static int initial_optimize_flag;
  41
  42 /* Called from check_newline via the macro HANDLE_PRAGMA.
  43    FINPUT is the source file input stream.
  44    CH is the first character after `#pragma'.
  45    The result is 1 if the pragma was handled.  */
  46
  47 int
  48 handle_pragma (p_getc, p_ungetc, pname)
  49      int (*  p_getc) PARAMS ((void)) ATTRIBUTE_UNUSED;
  50      void (* p_ungetc) PARAMS ((int)) ATTRIBUTE_UNUSED;
  51      const char *pname;
  52 {
  53   int retval = 0;
  54
  55   /* Record initial setting of optimize flag, so we can restore it.  */
  56   if (!pragma_initialized)
  57     {
  58       pragma_initialized = 1;
  59       initial_optimize_flag = optimize;
  60     }
  61
  62   if (strcmp (pname, "CC_OPT_ON") == 0)
  63     {
  64       optimize = 1;
  65       warning ("optimization turned on");
  66       retval = 1;
  67     }
  68   else if (strcmp (pname, "CC_OPT_OFF") == 0)
  69     {
  70       optimize = 0;
  71       warning ("optimization turned off");
  72       retval = 1;
  73     }
  74   else if (strcmp (pname, "CC_OPT_RESTORE") == 0)
  75     {
  76       extern int initial_optimize_flag;
  77
  78       if (optimize != initial_optimize_flag)
  79         optimize = initial_optimize_flag;
  80       warning ("optimization level restored");
  81       retval = 1;
  82     }
  83   else if (strcmp (pname, "CC_WRITABLE_STRINGS") == 0)
  84     flag_writable_strings = retval = 1;
  85   else if (strcmp (pname, "CC_NON_WRITABLE_STRINGS") == 0)
  86     flag_writable_strings = 0, retval = 1;
  87   else if (strcmp (pname, "CC_NO_MACH_TEXT_SECTIONS") == 0)
  88     flag_no_mach_text_sections = retval = 1;
  89
  90   return retval;
  91 }
  92
  93 void
  94 nextstep_asm_out_constructor (symbol, priority)
  95      rtx symbol;
  96      int priority ATTRIBUTE_UNUSED;
  97 {
  98   constructor_section ();
  99   assemble_align (POINTER_SIZE);
 100   assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
 101   fprintf (asm_out_file, ".reference .constructors_used\n");
 102 }
 103
 104 void
 105 nextstep_asm_out_destructor (symbol, priority)
 106      rtx symbol;
 107      int priority ATTRIBUTE_UNUSED;
 108 {
 109   destructor_section ();
 110   assemble_align (POINTER_SIZE);
 111   assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
 112   fprintf (asm_out_file, ".reference .destructors_used\n");
 113 }
 114