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
   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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 #ifdef GNU960
  85
  86 static void
  87 lnk960_before_parse (void)
  88 {
  89   static char *env_variables[] = { "G960LIB", "G960BASE", 0 };
  90   char **p;
  91   char *env ;
  92
  93   for (p = env_variables; *p; p++)
  94     {
  95       env = (char *) getenv (*p);
  96       if (env)
  97         ldfile_add_library_path (concat (env, "/lib/libcoff", ""), FALSE);
  98     }
  99
 100   env = (char *) getenv ("I960BASE");
 101   if (env)
 102     ldfile_add_library_path(concat (env, "/lib", ""), FALSE);
 103
 104   ldfile_output_architecture = bfd_arch_i960;
 105   ldfile_output_machine = bfd_mach_i960_core;
 106 }
 107
 108 #else   /* not GNU960 */
 109
 110 static void
 111 lnk960_before_parse (void)
 112 {
 113   char *name = getenv ("I960BASE");
 114
 115   if (name == (char *) NULL)
 116     {
 117       name = getenv("G960BASE");
 118       if (name == (char *) NULL)
 119         einfo ("%P%F I960BASE and G960BASE not set\n");
 120     }
 121
 122
 123   ldfile_add_library_path (concat (name, "/lib", ""), FALSE);
 124   ldfile_output_architecture = bfd_arch_i960;
 125   ldfile_output_machine = bfd_mach_i960_core;
 126 }
 127
 128 #endif  /* GNU960 */
 129
 130
 131 static void
 132 add_on (lib_list_type *list, lang_input_file_enum_type search)
 133 {
 134   while (list)
 135     {
 136       lang_add_input_file (list->name, search, (char *) NULL);
 137       list = list->next;
 138     }
 139 }
 140
 141 static void
 142 lnk960_after_parse (void)
 143 {
 144   /* If there has been no arch, default to -KB */
 145   if (ldfile_output_machine_name[0] == 0)
 146     ldfile_add_arch ("KB");
 147
 148   /* if there has been no hll list then add our own */
 149
 150   if (had_hll && !had_hll_name)
 151     {
 152       append (&hll_list_tail, "cg");
 153       if (ldfile_output_machine == bfd_mach_i960_ka_sa
 154           || ldfile_output_machine == bfd_mach_i960_ca)
 155         append (&hll_list_tail, "fpg");
 156     }
 157
 158   add_on (hll_list, lang_input_file_is_l_enum);
 159   add_on (syslib_list, lang_input_file_is_search_file_enum);
 160 }
 161
 162 static void
 163 lnk960_before_allocation (void)
 164 {
 165 }
 166
 167 static void
 168 lnk960_after_allocation (void)
 169 {
 170   if (!link_info.relocatable)
 171     {
 172       lang_abs_symbol_at_end_of (".text", "_etext");
 173       lang_abs_symbol_at_end_of (".data", "_edata");
 174       lang_abs_symbol_at_beginning_of (".bss", "_bss_start");
 175       lang_abs_symbol_at_end_of (".bss", "_end");
 176     }
 177 }
 178
 179
 180 static struct
 181  {
 182    unsigned  long number;
 183    char *name;
 184  }
 185 machine_table[] =
 186 {
 187   { bfd_mach_i960_core  ,"CORE" },
 188   { bfd_mach_i960_kb_sb ,"KB" },
 189   { bfd_mach_i960_kb_sb ,"SB" },
 190   { bfd_mach_i960_mc    ,"MC" },
 191   { bfd_mach_i960_xa    ,"XA" },
 192   { bfd_mach_i960_ca    ,"CA" },
 193   { bfd_mach_i960_ka_sa ,"KA" },
 194   { bfd_mach_i960_ka_sa ,"SA" },
 195   { bfd_mach_i960_jx    ,"JX" },
 196   { bfd_mach_i960_hx    ,"HX" },
 197
 198   { bfd_mach_i960_core  ,"core" },
 199   { bfd_mach_i960_kb_sb ,"kb" },
 200   { bfd_mach_i960_kb_sb ,"sb" },
 201   { bfd_mach_i960_mc    ,"mc" },
 202   { bfd_mach_i960_xa    ,"xa" },
 203   { bfd_mach_i960_ca    ,"ca" },
 204   { bfd_mach_i960_ka_sa ,"ka" },
 205   { bfd_mach_i960_ka_sa ,"sa" },
 206   { bfd_mach_i960_jx    ,"jx" },
 207   { bfd_mach_i960_hx    ,"hx" },
 208
 209   { 0, (char *) NULL }
 210 };
 211
 212 static void
 213 lnk960_set_output_arch (void)
 214 {
 215   /* Set the output architecture and machine if possible */
 216   unsigned int i;
 217   ldfile_output_machine = bfd_mach_i960_core;
 218   for (i= 0; machine_table[i].name != (char*) NULL; i++)
 219     {
 220       if (strcmp (ldfile_output_machine_name, machine_table[i].name) == 0)
 221         {
 222           ldfile_output_machine = machine_table[i].number;
 223           break;
 224         }
 225     }
 226   bfd_set_arch_mach (output_bfd, ldfile_output_architecture,
 227                      ldfile_output_machine);
 228 }
 229
 230 static char *
 231 lnk960_choose_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 232 {
 233 #ifdef GNU960
 234
 235   return bfd_make_targ_name (BFD_COFF_FORMAT, 0);
 236
 237 #else
 238
 239   char *from_outside = getenv (TARGET_ENVIRON);
 240   if (from_outside != (char *) NULL)
 241     return from_outside;
 242 #ifdef LNK960_LITTLE
 243   return "coff-Intel-little";
 244 #else
 245   return "coff-Intel-big";
 246 #endif
 247 #endif
 248
 249 }
 250
 251 static char *
 252 lnk960_get_script (int *isfile)
 253 EOF
 254
 255 if test -n "$COMPILE_IN"
 256 then
 257 # Scripts compiled in.
 258
 259 # sed commands to quote an ld script as a C string.
 260 sc="-f stringify.sed"
 261
 262 cat >>e${EMULATION_NAME}.c <<EOF
 263 {
 264   *isfile = 0;
 265
 266   if (link_info.relocatable && config.build_constructors)
 267     return
 268 EOF
 269 sed $sc ldscripts/${EMULATION_NAME}.xu                 >> e${EMULATION_NAME}.c
 270 echo '  ; else if (link_info.relocatable) return'     >> e${EMULATION_NAME}.c
 271 sed $sc ldscripts/${EMULATION_NAME}.xr                 >> e${EMULATION_NAME}.c
 272 echo '  ; else if (!config.text_read_only) return'     >> e${EMULATION_NAME}.c
 273 sed $sc ldscripts/${EMULATION_NAME}.xbn                >> e${EMULATION_NAME}.c
 274 echo '  ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
 275 sed $sc ldscripts/${EMULATION_NAME}.xn                 >> e${EMULATION_NAME}.c
 276 echo '  ; else return'                                 >> e${EMULATION_NAME}.c
 277 sed $sc ldscripts/${EMULATION_NAME}.x                  >> e${EMULATION_NAME}.c
 278 echo '; }'                                             >> e${EMULATION_NAME}.c
 279
 280 else
 281 # Scripts read from the filesystem.
 282
 283 cat >>e${EMULATION_NAME}.c <<EOF
 284 {
 285   *isfile = 1;
 286
 287   if (link_info.relocatable && config.build_constructors)
 288     return "ldscripts/${EMULATION_NAME}.xu";
 289   else if (link_info.relocatable)
 290     return "ldscripts/${EMULATION_NAME}.xr";
 291   else if (!config.text_read_only)
 292     return "ldscripts/${EMULATION_NAME}.xbn";
 293   else if (!config.magic_demand_paged)
 294     return "ldscripts/${EMULATION_NAME}.xn";
 295   else
 296     return "ldscripts/${EMULATION_NAME}.x";
 297 }
 298 EOF
 299
 300 fi
 301
 302 cat >>e${EMULATION_NAME}.c <<EOF
 303
 304 struct ld_emulation_xfer_struct ld_lnk960_emulation =
 305 {
 306   lnk960_before_parse,
 307   lnk960_syslib,
 308   lnk960_hll,
 309   lnk960_after_parse,
 310   NULL,                 /* after_open */
 311   lnk960_after_allocation,
 312   lnk960_set_output_arch,
 313   lnk960_choose_target,
 314   lnk960_before_allocation,
 315   lnk960_get_script,
 316   "lnk960",
 317   "",
 318   NULL, /* finish */
 319   NULL, /* create output section statements */
 320   NULL, /* open dynamic archive */
 321   NULL, /* place orphan */
 322   NULL, /* set symbols */
 323   NULL, /* parse args */
 324   NULL, /* add_options */
 325   NULL, /* handle_option */
 326   NULL, /* unrecognized file */
 327   NULL, /* list options */
 328   NULL, /* recognized file */
 329   NULL, /* find_potential_libraries */
 330   NULL  /* new_vers_pattern */
 331 };
 332 EOF