ld/emultempl/gld960c.em

   1 # This shell script emits a C file. -*- C -*-
   2 # It does some substitutions.
   3 cat >e${EMULATION_NAME}.c <<EOF
   4 /* Copyright (C) 1991, 93, 94, 95, 96, 1999 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 the Free
  20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21 02111-1307, USA.  */
  22
  23 /*
  24  * emulate the Intels port of  gld
  25  */
  26
  27
  28 #include <ctype.h>
  29 #include "bfd.h"
  30 #include "sysdep.h"
  31 #include "libiberty.h"
  32 #include "bfdlink.h"
  33
  34 #include "ld.h"
  35 #include "ldemul.h"
  36 #include "ldfile.h"
  37 #include "ldmisc.h"
  38 #include "ldmain.h"
  39
  40 #ifdef GNU960
  41
  42 static void
  43 gld960_before_parse()
  44 {
  45   static char *env_variables[] = { "G960LIB", "G960BASE", 0 };
  46   char **p;
  47   char *env ;
  48
  49   for ( p = env_variables; *p; p++ ){
  50     env =  (char *) getenv(*p);
  51     if (env) {
  52       ldfile_add_library_path (concat (env,
  53                                        "/lib/libcoff",
  54                                        (const char *) NULL),
  55                                false);
  56     }
  57   }
  58   ldfile_output_architecture = bfd_arch_i960;
  59 }
  60
  61 #else   /* not GNU960 */
  62
  63 static void gld960_before_parse()
  64 {
  65   char *env ;
  66   env =  getenv("G960LIB");
  67   if (env) {
  68     ldfile_add_library_path(env, false);
  69   }
  70   env = getenv("G960BASE");
  71   if (env)
  72     ldfile_add_library_path (concat (env, "/lib", (const char *) NULL),
  73                              false);
  74   ldfile_output_architecture = bfd_arch_i960;
  75 }
  76
  77 #endif  /* GNU960 */
  78
  79
  80 static void
  81 gld960_set_output_arch()
  82 {
  83   if (ldfile_output_machine_name != NULL
  84       && *ldfile_output_machine_name != '\0')
  85     {
  86       char *s, *s1;
  87
  88       s = concat ("i960:", ldfile_output_machine_name, (char *) NULL);
  89       for (s1 = s; *s1 != '\0'; s1++)
  90         if (isupper ((unsigned char) *s1))
  91           *s1 = tolower ((unsigned char) *s1);
  92       ldfile_set_output_arch (s);
  93       free (s);
  94     }
  95
  96   set_output_arch_default ();
  97 }
  98
  99 static char *
 100 gld960_choose_target()
 101 {
 102 #ifdef GNU960
 103
 104   output_filename = "b.out";
 105   return bfd_make_targ_name(BFD_BOUT_FORMAT, 0);
 106
 107 #else
 108
 109   char *from_outside = getenv(TARGET_ENVIRON);
 110   output_filename = "b.out";
 111
 112   if (from_outside != (char *)NULL)
 113     return from_outside;
 114
 115   return "coff-Intel-little";
 116
 117 #endif
 118 }
 119
 120 static char *
 121 gld960_get_script(isfile)
 122      int *isfile;
 123 EOF
 124
 125 if test -n "$COMPILE_IN"
 126 then
 127 # Scripts compiled in.
 128
 129 # sed commands to quote an ld script as a C string.
 130 sc="-f stringify.sed"
 131
 132 cat >>e${EMULATION_NAME}.c <<EOF
 133 {
 134   *isfile = 0;
 135
 136   if (link_info.relocateable == true && config.build_constructors == true)
 137     return
 138 EOF
 139 sed $sc ldscripts/${EMULATION_NAME}.xu                     >> e${EMULATION_NAME}.c
 140 echo '  ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
 141 sed $sc ldscripts/${EMULATION_NAME}.xr                     >> e${EMULATION_NAME}.c
 142 echo '  ; else if (!config.text_read_only) return'         >> e${EMULATION_NAME}.c
 143 sed $sc ldscripts/${EMULATION_NAME}.xbn                    >> e${EMULATION_NAME}.c
 144 echo '  ; else if (!config.magic_demand_paged) return'     >> e${EMULATION_NAME}.c
 145 sed $sc ldscripts/${EMULATION_NAME}.xn                     >> e${EMULATION_NAME}.c
 146 echo '  ; else return'                                     >> e${EMULATION_NAME}.c
 147 sed $sc ldscripts/${EMULATION_NAME}.x                      >> e${EMULATION_NAME}.c
 148 echo '; }'                                                 >> e${EMULATION_NAME}.c
 149
 150 else
 151 # Scripts read from the filesystem.
 152
 153 cat >>e${EMULATION_NAME}.c <<EOF
 154 {
 155   *isfile = 1;
 156
 157   if (link_info.relocateable == true && config.build_constructors == true)
 158     return "ldscripts/${EMULATION_NAME}.xu";
 159   else if (link_info.relocateable == true)
 160     return "ldscripts/${EMULATION_NAME}.xr";
 161   else if (!config.text_read_only)
 162     return "ldscripts/${EMULATION_NAME}.xbn";
 163   else if (!config.magic_demand_paged)
 164     return "ldscripts/${EMULATION_NAME}.xn";
 165   else
 166     return "ldscripts/${EMULATION_NAME}.x";
 167 }
 168 EOF
 169
 170 fi
 171
 172 cat >>e${EMULATION_NAME}.c <<EOF
 173
 174 struct ld_emulation_xfer_struct ld_gld960coff_emulation =
 175 {
 176   gld960_before_parse,
 177   syslib_default,
 178   hll_default,
 179   after_parse_default,
 180   after_open_default,
 181   after_allocation_default,
 182   gld960_set_output_arch,
 183   gld960_choose_target,
 184   before_allocation_default,
 185   gld960_get_script,
 186   "960coff",
 187   ""
 188 };
 189 EOF