summaryrefslogtreecommitdiff
path: root/ld/emultempl/lnk960.em
blob: 6364f6df383fb6226f292551d4b4703cf5170a8d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
# This shell script emits a C file. -*- C -*-
# It does some substitutions.
fragment <<EOF
/* intel coff loader emulation specific stuff
   Copyright (C) 1991-2014 Free Software Foundation, Inc.
   Written by Steve Chamberlain steve@cygnus.com

   This file is part of the GNU Binutils.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */

#include "sysdep.h"
#include "libiberty.h"
#include "bfd.h"
#include "bfdlink.h"

/*#include "archures.h"*/
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
#include "ldemul.h"

typedef struct lib_list {
  char *name;
  struct lib_list *next;
} lib_list_type;

static lib_list_type *hll_list;
static lib_list_type **hll_list_tail = &hll_list;

static lib_list_type *syslib_list;
static lib_list_type **syslib_list_tail = &syslib_list;


static void
append (lib_list_type ***list, char *name)
{
  lib_list_type *element = (lib_list_type *) xmalloc (sizeof (lib_list_type));

  element->name = name;
  element->next = (lib_list_type *) NULL;
  **list = element;
  *list = &element->next;

}

static bfd_boolean had_hll = FALSE;
static bfd_boolean had_hll_name = FALSE;

static void
lnk960_hll (char *name)
{
  had_hll = TRUE;
  if (name != (char *) NULL)
    {
      had_hll_name = TRUE;
      append (&hll_list_tail, name);
    }
}

static void
lnk960_syslib (char *name)
{
  append (&syslib_list_tail, name);
}


static void
lnk960_before_parse (void)
{
  char *name = getenv ("I960BASE");

  if (name == (char *) NULL)
    {
      name = getenv("G960BASE");
      if (name == (char *) NULL)
	einfo ("%P%F I960BASE and G960BASE not set\n");
    }

  ldfile_add_library_path (concat (name, "/lib", (const char *) NULL), FALSE);
  ldfile_output_architecture = bfd_arch_i960;
  ldfile_output_machine = bfd_mach_i960_core;
}

static void
add_on (lib_list_type *list, lang_input_file_enum_type search)
{
  while (list)
    {
      lang_add_input_file (list->name, search, (char *) NULL);
      list = list->next;
    }
}

static void
lnk960_after_parse (void)
{
  /* If there has been no arch, default to -KB */
  if (ldfile_output_machine_name[0] == 0)
    ldfile_add_arch ("KB");

  /* if there has been no hll list then add our own */

  if (had_hll && !had_hll_name)
    {
      append (&hll_list_tail, "cg");
      if (ldfile_output_machine == bfd_mach_i960_ka_sa
	  || ldfile_output_machine == bfd_mach_i960_ca)
	append (&hll_list_tail, "fpg");
    }

  add_on (hll_list, lang_input_file_is_l_enum);
  add_on (syslib_list, lang_input_file_is_search_file_enum);
}

/* Create a symbol with the given name with the value of the
   address of first byte of the section named.

   If the symbol already exists, then do nothing.  */

static void
symbol_at_beginning_of (const char *secname, const char *name)
{
  struct bfd_link_hash_entry *h;

  h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE);
  if (h == NULL)
    einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));

  if (h->type == bfd_link_hash_new
      || h->type == bfd_link_hash_undefined)
    {
      asection *sec;

      h->type = bfd_link_hash_defined;

      sec = bfd_get_section_by_name (link_info.output_bfd, secname);
      if (sec == NULL)
	sec = bfd_abs_section_ptr;
      h->u.def.value = 0;
      h->u.def.section = sec;
    }
}

/* Create a symbol with the given name with the value of the
   address of the first byte after the end of the section named.

   If the symbol already exists, then do nothing.  */

static void
symbol_at_end_of (const char *secname, const char *name)
{
  struct bfd_link_hash_entry *h;

  h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE);
  if (h == NULL)
    einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));

  if (h->type == bfd_link_hash_new
      || h->type == bfd_link_hash_undefined)
    {
      asection *sec;

      h->type = bfd_link_hash_defined;

      sec = bfd_get_section_by_name (link_info.output_bfd, secname);
      if (sec == NULL)
	sec = bfd_abs_section_ptr;
      h->u.def.value = sec->size;
      h->u.def.section = sec;
    }
}

static void
lnk960_after_allocation (void)
{
  if (!link_info.relocatable)
    {
      symbol_at_end_of (".text", "_etext");
      symbol_at_end_of (".data", "_edata");
      symbol_at_beginning_of (".bss", "_bss_start");
      symbol_at_end_of (".bss", "_end");
    }
}


static struct
 {
   unsigned  long number;
   char *name;
 }
machine_table[] =
{
  { bfd_mach_i960_core	,"CORE" },
  { bfd_mach_i960_kb_sb	,"KB" },
  { bfd_mach_i960_kb_sb	,"SB" },
  { bfd_mach_i960_mc	,"MC" },
  { bfd_mach_i960_xa	,"XA" },
  { bfd_mach_i960_ca	,"CA" },
  { bfd_mach_i960_ka_sa	,"KA" },
  { bfd_mach_i960_ka_sa	,"SA" },
  { bfd_mach_i960_jx	,"JX" },
  { bfd_mach_i960_hx	,"HX" },

  { bfd_mach_i960_core	,"core" },
  { bfd_mach_i960_kb_sb	,"kb" },
  { bfd_mach_i960_kb_sb	,"sb" },
  { bfd_mach_i960_mc	,"mc" },
  { bfd_mach_i960_xa	,"xa" },
  { bfd_mach_i960_ca	,"ca" },
  { bfd_mach_i960_ka_sa	,"ka" },
  { bfd_mach_i960_ka_sa	,"sa" },
  { bfd_mach_i960_jx	,"jx" },
  { bfd_mach_i960_hx	,"hx" },

  { 0, (char *) NULL }
};

static void
lnk960_set_output_arch (void)
{
  /* Set the output architecture and machine if possible */
  unsigned int i;
  ldfile_output_machine = bfd_mach_i960_core;
  for (i= 0; machine_table[i].name != (char*) NULL; i++)
    {
      if (strcmp (ldfile_output_machine_name, machine_table[i].name) == 0)
	{
	  ldfile_output_machine = machine_table[i].number;
	  break;
	}
    }
  bfd_set_arch_mach (link_info.output_bfd, ldfile_output_architecture,
		     ldfile_output_machine);
}

static char *
lnk960_choose_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
{
  char *from_outside = getenv (TARGET_ENVIRON);
  if (from_outside != (char *) NULL)
    return from_outside;
#ifdef LNK960_LITTLE
  return "coff-Intel-little";
#else
  return "coff-Intel-big";
#endif
}

static char *
lnk960_get_script (int *isfile)
EOF

if test x"$COMPILE_IN" = xyes
then
# Scripts compiled in.

# sed commands to quote an ld script as a C string.
sc="-f stringify.sed"

fragment <<EOF
{
  *isfile = 0;

  if (link_info.relocatable && config.build_constructors)
    return
EOF
sed $sc ldscripts/${EMULATION_NAME}.xu                 >> e${EMULATION_NAME}.c
echo '  ; else if (link_info.relocatable) return'     >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xr                 >> e${EMULATION_NAME}.c
echo '  ; else if (!config.text_read_only) return'     >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xbn                >> e${EMULATION_NAME}.c
echo '  ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xn                 >> e${EMULATION_NAME}.c
echo '  ; else return'                                 >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.x                  >> e${EMULATION_NAME}.c
echo '; }'                                             >> e${EMULATION_NAME}.c

else
# Scripts read from the filesystem.

fragment <<EOF
{
  *isfile = 1;

  if (link_info.relocatable && config.build_constructors)
    return "ldscripts/${EMULATION_NAME}.xu";
  else if (link_info.relocatable)
    return "ldscripts/${EMULATION_NAME}.xr";
  else if (!config.text_read_only)
    return "ldscripts/${EMULATION_NAME}.xbn";
  else if (!config.magic_demand_paged)
    return "ldscripts/${EMULATION_NAME}.xn";
  else
    return "ldscripts/${EMULATION_NAME}.x";
}
EOF

fi

fragment <<EOF

struct ld_emulation_xfer_struct ld_lnk960_emulation =
{
  lnk960_before_parse,
  lnk960_syslib,
  lnk960_hll,
  lnk960_after_parse,
  after_open_default,
  lnk960_after_allocation,
  lnk960_set_output_arch,
  lnk960_choose_target,
  before_allocation_default,
  lnk960_get_script,
  "lnk960",
  "",
  finish_default,
  NULL,	/* create output section statements */
  NULL,	/* open dynamic archive */
  NULL,	/* place orphan */
  NULL,	/* set symbols */
  NULL,	/* parse args */
  NULL,	/* add_options */
  NULL,	/* handle_option */
  NULL,	/* unrecognized file */
  NULL,	/* list options */
  NULL,	/* recognized file */
  NULL,	/* find_potential_libraries */
  NULL,	/* new_vers_pattern */
  NULL	/* extra_map_file_text */
};
EOF