ld/ld-gld960.c

   1 /* Copyright (C) 1991 Free Software Foundation, Inc.
   2
   3 This file is part of GLD, the Gnu Linker.
   4
   5 GLD is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 1, or (at your option)
   8 any later version.
   9
  10 GLD is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with GLD; see the file COPYING.  If not, write to
  17 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  18
  19 /*
  20    $Id$
  21
  22    $Log$
  23    Revision 1.1  1991/03/21 21:28:26  gumby
  24    Initial revision
  25
  26  * Revision 1.3  1991/03/16  22:27:24  rich
  27  * fish
  28  *
  29  * Revision 1.2  1991/03/15  18:45:55  rich
  30  * foo
  31  *
  32  * Revision 1.1  1991/03/13  00:48:12  chrisb
  33  * Initial revision
  34  *
  35  * Revision 1.4  1991/03/10  09:31:19  rich
  36  *  Modified Files:
  37  *      Makefile config.h ld-emul.c ld-emul.h ld-gld.c ld-gld960.c
  38  *      ld-lnk960.c ld.h lddigest.c ldexp.c ldexp.h ldfile.c ldfile.h
  39  *      ldgram.y ldinfo.h ldlang.c ldlang.h ldlex.h ldlex.l ldmain.c
  40  *      ldmain.h ldmisc.c ldmisc.h ldsym.c ldsym.h ldversion.c
  41  *      ldversion.h ldwarn.h ldwrite.c ldwrite.h y.tab.h
  42  *
  43  * As of this round of changes, ld now builds on all hosts of (Intel960)
  44  * interest and copy passes my copy test on big endian hosts again.
  45  *
  46  * Revision 1.3  1991/02/22  17:14:57  sac
  47  * Added RCS keywords and copyrights
  48  *
  49 */
  50
  51 /*
  52  * emulate the Intels port of  gld
  53  */
  54
  55
  56 #include "sysdep.h"
  57 #include "bfd.h"
  58
  59
  60 #include "ld.h"
  61 #include "config.h"
  62 #include "ld-emul.h"
  63 #include "ldfile.h"
  64 #include "ldmisc.h"
  65
  66
  67 /* IMPORTS */
  68 extern char *output_filename;
  69 extern  boolean lang_float_flag;
  70
  71
  72 extern enum bfd_architecture ldfile_output_architecture;
  73 extern unsigned long ldfile_output_machine;
  74 extern char *ldfile_output_machine_name;
  75
  76 extern bfd *output_bfd;
  77
  78
  79
  80 static void gld960_before_parse()
  81 {
  82   char *env ;
  83   env =  getenv("G960LIB");
  84   if (env) {
  85     ldfile_add_library_path(env);
  86   }
  87   env = getenv("G960BASE");
  88   if (env) {
  89     ldfile_add_library_path(concat(env,"/lib",""));
  90   }
  91   ldfile_output_architecture = bfd_arch_i960;
  92 }
  93
  94
  95 static void
  96 gld960_after_parse()
  97 {
  98
  99 }
 100
 101 static void
 102 gld960_after_allocation()
 103 {
 104
 105 }
 106
 107 static void
 108 gld960_before_allocation()
 109 {
 110
 111 }
 112
 113
 114 static void
 115 gld960_set_output_arch()
 116 {
 117   /* Set the output architecture and machine if possible */
 118   unsigned long  machine = 0;
 119   bfd_set_arch_mach(output_bfd, ldfile_output_architecture, machine);
 120 }
 121
 122 static char *
 123 gld960_choose_target()
 124 {
 125   char *from_outside = getenv(TARGET_ENVIRON);
 126   output_filename = "b.out";
 127
 128   if (from_outside != (char *)NULL)
 129     return from_outside;
 130   return GLD960_TARGET;
 131 }
 132
 133 static void
 134 gld960_syslib()
 135 {
 136   info("%S SYSLIB ignored\n");
 137 }
 138
 139 static void
 140 gld960_hll()
 141 {
 142   info("%S HLL ignored\n");
 143 }
 144
 145
 146 static char *script = "\
 147  \
 148 SECTIONS \
 149 { \
 150   .text : \
 151   { \
 152    CREATE_OBJECT_SYMBOLS \
 153     *(.text) \
 154       _etext =.;\
 155     }  \
 156  \
 157   .data  SIZEOF(.text) + ADDR(.text):\
 158   { \
 159  \
 160     *(.data) \
 161       _edata = .; \
 162     }  \
 163   .bss   SIZEOF(.data) + ADDR(.data) :    \
 164   { _bss_start = .;\
 165       *(.bss)    \
 166         [COMMON] \
 167       _end = . ; \
 168     } \
 169 } \
 170 ";
 171
 172 static char *
 173 gld960_get_script()
 174 {
 175 return script;
 176 }
 177
 178 struct ld_emulation_xfer_struct ld_gld960_emulation =
 179 {
 180   gld960_before_parse,
 181   gld960_syslib,
 182   gld960_hll,
 183   gld960_after_parse,
 184   gld960_after_allocation,
 185   gld960_set_output_arch,
 186   gld960_choose_target,
 187   gld960_before_allocation,
 188   gld960_get_script,
 189 };