ld/emultempl/lnk960.em

   1 # This shell script emits a C file. -*- C -*-
   2 # It does some substitutions.
   3 cat >e${EMULATION_NAME}.c <<EOF
   4 /* intel coff loader emulation specific stuff
   5    Copyright 1991, 1992, 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2003, 2005
   6    Free Software Foundation, Inc.
   7    Written by Steve Chamberlain steve@cygnus.com
   8
   9 This file is part of GLD, the Gnu Linker.
  10
  11 GLD is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2, or (at your option)
  14 any later version.
  15
  16 GLD is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with GLD; see the file COPYING.  If not, write to
  23 the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  24
  25 #include "libiberty.h"
  26 #include "bfd.h"
  27 #include "sysdep.h"
  28 #include "bfdlink.h"
  29
  30 /*#include "archures.h"*/
  31 #include "ld.h"
  32 #include "ldmain.h"
  33 #include "ldmisc.h"
  34 #include "ldexp.h"
  35 #include "ldlang.h"
  36 #include "ldfile.h"
  37 #include "ldemul.h"
  38
  39 typedef struct lib_list {
  40   char *name;
  41   struct lib_list *next;
  42 } lib_list_type;
  43
  44 static lib_list_type *hll_list;
  45 static lib_list_type **hll_list_tail = &hll_list;
  46
  47 static lib_list_type *syslib_list;
  48 static lib_list_type **syslib_list_tail = &syslib_list;
  49
  50
  51 static void
  52 append (lib_list_type ***list, char *name)
  53 {
  54   lib_list_type *element = (lib_list_type *) xmalloc (sizeof (lib_list_type));
  55
  56   element->name = name;
  57   element->next = (lib_list_type *) NULL;
  58   **list = element;
  59   *list = &element->next;
  60
  61 }
  62
  63 static bfd_boolean had_hll = FALSE;
  64 static bfd_boolean had_hll_name = FALSE;
  65
  66 static void
  67 lnk960_hll (char *name)
  68 {
  69   had_hll = TRUE;
  70   if (name != (char *) NULL)
  71     {
  72       had_hll_name = TRUE;
  73       append (&hll_list_tail, name);
  74     }
  75 }
  76
  77 static void
  78 lnk960_syslib (char *name)
  79 {
  80   append (&syslib_list_tail, name);
  81 }
  82
  83
  84 static void
  85 lnk960_before_parse (void)
  86 {
  87   char *name = getenv ("I960BASE");
  88
  89   if (name == (char *) NULL)
  90     {
  91       name = getenv("G960BASE");
  92       if (name == (char *) NULL)
  93         einfo ("%P%F I960BASE and G960BASE not set\n");
  94     }
  95
  96   ldfile_add_library_path (concat (name, "/lib", NULL), FALSE);
  97   ldfile_output_architecture = bfd_arch_i960;
  98   ldfile_output_machine = bfd_mach_i960_core;
  99 }
 100
 101 static void
 102 add_on (lib_list_type *list, lang_input_file_enum_type search)
 103 {
 104   while (list)
 105     {
 106       lang_add_input_file (list->name, search, (char *) NULL);
 107       list = list->next;
 108     }
 109 }
 110
 111 static void
 112 lnk960_after_parse (void)
 113 {
 114   /* If there has been no arch, default to -KB */
 115   if (ldfile_output_machine_name[0] == 0)
 116     ldfile_add_arch ("KB");
 117
 118   /* if there has been no hll list then add our own */
 119
 120   if (had_hll && !had_hll_name)
 121     {
 122       append (&hll_list_tail, "cg");
 123       if (ldfile_output_machine == bfd_mach_i960_ka_sa
 124           || ldfile_output_machine == bfd_mach_i960_ca)
 125         append (&hll_list_tail, "fpg");
 126     }
 127
 128   add_on (hll_list, lang_input_file_is_l_enum);
 129   add_on (syslib_list, lang_input_file_is_search_file_enum);
 130 }
 131
 132 static void
 133 lnk960_after_allocation (void)
 134 {
 135   if (!link_info.relocatable)
 136     {
 137       lang_abs_symbol_at_end_of (".text", "_etext");
 138       lang_abs_symbol_at_end_of (".data", "_edata");
 139       lang_abs_symbol_at_beginning_of (".bss", "_bss_start");
 140       lang_abs_symbol_at_end_of (".bss", "_end");
 141     }
 142 }
 143
 144
 145 static struct
 146  {
 147    unsigned  long number;
 148    char *name;
 149  }
 150 machine_table[] =
 151 {
 152   { bfd_mach_i960_core  ,"CORE" },
 153   { bfd_mach_i960_kb_sb ,"KB" },
 154   { bfd_mach_i960_kb_sb ,"SB" },
 155   { bfd_mach_i960_mc    ,"MC" },
 156   { bfd_mach_i960_xa    ,"XA" },
 157   { bfd_mach_i960_ca    ,"CA" },
 158   { bfd_mach_i960_ka_sa ,"KA" },
 159   { bfd_mach_i960_ka_sa ,"SA" },
 160   { bfd_mach_i960_jx    ,"JX" },
 161   { bfd_mach_i960_hx    ,"HX" },
 162
 163   { bfd_mach_i960_core  ,"core" },
 164   { bfd_mach_i960_kb_sb ,"kb" },
 165   { bfd_mach_i960_kb_sb ,"sb" },
 166   { bfd_mach_i960_mc    ,"mc" },
 167   { bfd_mach_i960_xa    ,"xa" },
 168   { bfd_mach_i960_ca    ,"ca" },
 169   { bfd_mach_i960_ka_sa ,"ka" },
 170   { bfd_mach_i960_ka_sa ,"sa" },
 171   { bfd_mach_i960_jx    ,"jx" },
 172   { bfd_mach_i960_hx    ,"hx" },
 173
 174   { 0, (char *) NULL }
 175 };
 176
 177 static void
 178 lnk960_set_output_arch (void)
 179 {
 180   /* Set the output architecture and machine if possible */
 181   unsigned int i;
 182   ldfile_output_machine = bfd_mach_i960_core;
 183   for (i= 0; machine_table[i].name != (char*) NULL; i++)
 184     {
 185       if (strcmp (ldfile_output_machine_name, machine_table[i].name) == 0)
 186         {
 187           ldfile_output_machine = machine_table[i].number;
 188           break;
 189         }
 190     }
 191   bfd_set_arch_mach (output_bfd, ldfile_output_architecture,
 192                      ldfile_output_machine);
 193 }
 194
 195 static char *
 196 lnk960_choose_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 197 {
 198   char *from_outside = getenv (TARGET_ENVIRON);
 199   if (from_outside != (char *) NULL)
 200     return from_outside;
 201 #ifdef LNK960_LITTLE
 202   return "coff-Intel-little";
 203 #else
 204   return "coff-Intel-big";
 205 #endif
 206 }
 207
 208 static char *
 209 lnk960_get_script (int *isfile)
 210 EOF
 211
 212 if test -n "$COMPILE_IN"
 213 then
 214 # Scripts compiled in.
 215
 216 # sed commands to quote an ld script as a C string.
 217 sc="-f stringify.sed"
 218
 219 cat >>e${EMULATION_NAME}.c <<EOF
 220 {
 221   *isfile = 0;
 222
 223   if (link_info.relocatable && config.build_constructors)
 224     return
 225 EOF
 226 sed $sc ldscripts/${EMULATION_NAME}.xu                 >> e${EMULATION_NAME}.c
 227 echo '  ; else if (link_info.relocatable) return'     >> e${EMULATION_NAME}.c
 228 sed $sc ldscripts/${EMULATION_NAME}.xr                 >> e${EMULATION_NAME}.c
 229 echo '  ; else if (!config.text_read_only) return'     >> e${EMULATION_NAME}.c
 230 sed $sc ldscripts/${EMULATION_NAME}.xbn                >> e${EMULATION_NAME}.c
 231 echo '  ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
 232 sed $sc ldscripts/${EMULATION_NAME}.xn                 >> e${EMULATION_NAME}.c
 233 echo '  ; else return'                                 >> e${EMULATION_NAME}.c
 234 sed $sc ldscripts/${EMULATION_NAME}.x                  >> e${EMULATION_NAME}.c
 235 echo '; }'                                             >> e${EMULATION_NAME}.c
 236
 237 else
 238 # Scripts read from the filesystem.
 239
 240 cat >>e${EMULATION_NAME}.c <<EOF
 241 {
 242   *isfile = 1;
 243
 244   if (link_info.relocatable && config.build_constructors)
 245     return "ldscripts/${EMULATION_NAME}.xu";
 246   else if (link_info.relocatable)
 247     return "ldscripts/${EMULATION_NAME}.xr";
 248   else if (!config.text_read_only)
 249     return "ldscripts/${EMULATION_NAME}.xbn";
 250   else if (!config.magic_demand_paged)
 251     return "ldscripts/${EMULATION_NAME}.xn";
 252   else
 253     return "ldscripts/${EMULATION_NAME}.x";
 254 }
 255 EOF
 256
 257 fi
 258
 259 cat >>e${EMULATION_NAME}.c <<EOF
 260
 261 struct ld_emulation_xfer_struct ld_lnk960_emulation =
 262 {
 263   lnk960_before_parse,
 264   lnk960_syslib,
 265   lnk960_hll,
 266   lnk960_after_parse,
 267   NULL,                 /* after_open */
 268   lnk960_after_allocation,
 269   lnk960_set_output_arch,
 270   lnk960_choose_target,
 271   before_allocation_default,
 272   lnk960_get_script,
 273   "lnk960",
 274   "",
 275   finish_default,
 276   NULL, /* create output section statements */
 277   NULL, /* open dynamic archive */
 278   NULL, /* place orphan */
 279   NULL, /* set symbols */
 280   NULL, /* parse args */
 281   NULL, /* add_options */
 282   NULL, /* handle_option */
 283   NULL, /* unrecognized file */
 284   NULL, /* list options */
 285   NULL, /* recognized file */
 286   NULL, /* find_potential_libraries */
 287   NULL  /* new_vers_pattern */
 288 };
 289 EOF