ld/emultempl/gld960.em

   1 # This shell script emits a C file. -*- C -*-
   2 # It does some substitutions.
   3 cat >em_${EMULATION_NAME}.c <<EOF
   4 /* Copyright (C) 1991 Free Software Foundation, Inc.
   5
   6 This file is part of GLD, the Gnu Linker.
   7
   8 GLD is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 1, or (at your option)
  11 any later version.
  12
  13 GLD is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GLD; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22 /*
  23  * emulate the Intels port of  gld
  24  */
  25
  26
  27 #include "bfd.h"
  28 #include "sysdep.h"
  29
  30
  31 #include "ld.h"
  32 #include "config.h"
  33 #include "ldemul.h"
  34 #include "ldfile.h"
  35 #include "ldmisc.h"
  36
  37
  38 /* IMPORTS */
  39 extern char *output_filename;
  40 extern  boolean lang_float_flag;
  41
  42
  43 extern enum bfd_architecture ldfile_output_architecture;
  44 extern unsigned long ldfile_output_machine;
  45 extern char *ldfile_output_machine_name;
  46
  47 extern bfd *output_bfd;
  48
  49
  50
  51 #ifdef GNU960
  52
  53 static void
  54 gld960_before_parse()
  55 {
  56   static char *env_variables[] = { "G960LIB", "G960BASE", 0 };
  57   char **p;
  58   char *env ;
  59
  60   for ( p = env_variables; *p; p++ ){
  61     env =  (char *) getenv(*p);
  62     if (env) {
  63       ldfile_add_library_path(concat(env,"/lib/libbout",""));
  64     }
  65   }
  66   ldfile_output_architecture = bfd_arch_i960;
  67 }
  68
  69 #else   /* not GNU960 */
  70
  71 static void gld960_before_parse()
  72 {
  73   char *env ;
  74   env =  getenv("G960LIB");
  75   if (env) {
  76     ldfile_add_library_path(env);
  77   }
  78   env = getenv("G960BASE");
  79   if (env) {
  80     ldfile_add_library_path(concat(env,"/lib",""));
  81   }
  82   ldfile_output_architecture = bfd_arch_i960;
  83 }
  84
  85 #endif  /* GNU960 */
  86
  87
  88 static void
  89 gld960_set_output_arch()
  90 {
  91   bfd_set_arch_mach(output_bfd, ldfile_output_architecture, bfd_mach_i960_core);
  92 }
  93
  94 static char *
  95 gld960_choose_target()
  96 {
  97 #ifdef GNU960
  98
  99   output_filename = "b.out";
 100   return bfd_make_targ_name(BFD_BOUT_FORMAT, 0);
 101
 102 #else
 103
 104   char *from_outside = getenv(TARGET_ENVIRON);
 105   output_filename = "b.out";
 106
 107   if (from_outside != (char *)NULL)
 108     return from_outside;
 109
 110   return "b.out.little";
 111
 112 #endif
 113 }
 114
 115 static char *
 116 gld960_get_script(isfile)
 117      int *isfile;
 118 EOF
 119
 120 if test "$DEFAULT_EMULATION" = "$EMULATION_NAME"
 121 then
 122 # Scripts compiled in.
 123
 124 # sed commands to quote an ld script as a C string.
 125 sc='s/["\\]/\\&/g
 126 s/$/\\n\\/
 127 1s/^/"{/
 128 $s/$/n}"/
 129 '
 130
 131 cat >>em_${EMULATION_NAME}.c <<EOF
 132 {
 133   extern ld_config_type config;
 134
 135   *isfile = 0;
 136
 137   if (config.relocateable_output == true && config.build_constructors == true)
 138     return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`;
 139   else if (config.relocateable_output == true)
 140     return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`;
 141   else if (!config.text_read_only)
 142     return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`;
 143   else if (!config.magic_demand_paged)
 144     return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`;
 145   else
 146     return `sed "$sc" ldscripts/${EMULATION_NAME}.x`;
 147 }
 148 EOF
 149
 150 else
 151 # Scripts read from the filesystem.
 152
 153 cat >>em_${EMULATION_NAME}.c <<EOF
 154 {
 155   extern ld_config_type config;
 156
 157   *isfile = 1;
 158
 159   if (config.relocateable_output == true && config.build_constructors == true)
 160     return "ldscripts/${EMULATION_NAME}.xu";
 161   else if (config.relocateable_output == true)
 162     return "ldscripts/${EMULATION_NAME}.xr";
 163   else if (!config.text_read_only)
 164     return "ldscripts/${EMULATION_NAME}.xbn";
 165   else if (!config.magic_demand_paged)
 166     return "ldscripts/${EMULATION_NAME}.xn";
 167   else
 168     return "ldscripts/${EMULATION_NAME}.x";
 169 }
 170 EOF
 171
 172 fi
 173
 174 cat >>em_${EMULATION_NAME}.c <<EOF
 175
 176 struct ld_emulation_xfer_struct ld_gld960_emulation =
 177 {
 178   gld960_before_parse,
 179   syslib_default,
 180   hll_default,
 181   after_parse_default,
 182   after_allocation_default,
 183   gld960_set_output_arch,
 184   gld960_choose_target,
 185   before_allocation_default,
 186   gld960_get_script,
 187   "960",
 188   ""
 189 };
 190 EOF