ld/i386aout.c

   1 /* NOTE: If there are angle brackets here: I386AOUT then this is a
   2  * template file (ldtemplate), intended for processing by sed.
   3  * Otherwise, this file has already been processed by sed,
   4  * and customized for a particular emulation target.
   5  * In that DO NOT EDIT the file; edit ldtemplate instead.
   6  */
   7
   8 /* emulate the original gld for the given I386AOUT
   9    Copyright (C) 1991 Free Software Foundation, Inc.
  10    Written by Steve Chamberlain steve@cygnus.com
  11
  12 This file is part of GLD, the Gnu Linker.
  13
  14 This program is free software; you can redistribute it and/or modify
  15 it under the terms of the GNU General Public License as published by
  16 the Free Software Foundation; either version 2 of the License, or
  17 (at your option) any later version.
  18
  19 This program is distributed in the hope that it will be useful,
  20 but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 GNU General Public License for more details.
  23
  24 You should have received a copy of the GNU General Public License
  25 along with this program; if not, write to the Free Software
  26 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  27
  28 /*
  29  *  $Id:#
  30  */
  31
  32 #define TARGET_IS_I386AOUT
  33
  34
  35 #include "bfd.h"
  36 #include "sysdep.h"
  37 #include "ld.h"
  38 #include "config.h"
  39 #include "ldemul.h"
  40 #include "ldfile.h"
  41 #include "ldmisc.h"
  42
  43 extern  boolean lang_float_flag;
  44
  45
  46 extern enum bfd_architecture ldfile_output_architecture;
  47 extern unsigned long ldfile_output_machine;
  48 extern char *ldfile_output_machine_name;
  49
  50 extern bfd *output_bfd;
  51
  52
  53
  54 static void gldi386aout_before_parse()
  55 {
  56 #ifdef TARGET_IS_M88KBCS
  57   extern char lprefix;
  58   lprefix = '@';
  59 #else
  60 #ifndef TARGET_ /* I.e., if not generic */
  61   ldfile_output_architecture = bfd_arch_i386;
  62 #endif
  63 #endif
  64 }
  65
  66
  67 static void
  68 gldi386aout_after_parse()
  69 {
  70
  71 }
  72
  73 static void
  74 gldi386aout_after_allocation()
  75 {
  76
  77 }
  78
  79 static void
  80 gldi386aout_before_allocation()
  81 {
  82
  83 }
  84
  85
  86 static void
  87 gldi386aout_set_output_arch()
  88 {
  89   /* Set the output architecture and machine if possible */
  90   bfd_set_arch_mach(output_bfd,
  91                     ldfile_output_architecture, ldfile_output_machine);
  92 }
  93
  94 static char *
  95 gldi386aout_choose_target()
  96 {
  97   char *from_outside = getenv(TARGET_ENVIRON);
  98   if (from_outside != (char *)NULL)
  99     return from_outside;
 100   return GLDI386AOUT_TARGET;
 101 }
 102
 103 static void
 104 gldi386aout_syslib()
 105 {
 106   info("%S SYSLIB ignored\n");
 107 }
 108
 109 static void
 110 gldi386aout_hll(ignore)
 111 char  *ignore;
 112 {
 113   info("%S HLL ignored\n");
 114 }
 115
 116 static char *gldi386aout_script =
 117 #include "i386aout.x"
 118 ;
 119 static char *gldi386aout_script_option_Ur  =
 120 #include "i386aout.xu"
 121 ;
 122 static char *gldi386aout_script_option_r  =
 123 #include "i386aout.xr"
 124 ;
 125 static char *gldi386aout_script_option_n  =  /* Used with -n flag. */
 126 #include "i386aout.xn"
 127 ;
 128 static char *gldi386aout_script_option_N  =  /* Used with -N flag. */
 129 #include "i386aout.xN"
 130 ;
 131
 132 static char *gldi386aout_get_script()
 133 {
 134   extern ld_config_type config;
 135   if (config.relocateable_output == true &&
 136       config.build_constructors == true) {
 137     return gldi386aout_script_option_Ur;
 138   }
 139   if (config.relocateable_output == true) {
 140     return gldi386aout_script_option_r;
 141   }
 142   if (!config.text_read_only)
 143     return gldi386aout_script_option_N;
 144   if (!config.magic_demand_paged)
 145     return gldi386aout_script_option_n;
 146   return gldi386aout_script;
 147 }
 148 struct ld_emulation_xfer_struct ld_gldi386aout_emulation =
 149 {
 150   gldi386aout_before_parse,
 151   gldi386aout_syslib,
 152   gldi386aout_hll,
 153   gldi386aout_after_parse,
 154   gldi386aout_after_allocation,
 155   gldi386aout_set_output_arch,
 156   gldi386aout_choose_target,
 157   gldi386aout_before_allocation,
 158   gldi386aout_get_script,
 159 };