aboutsummaryrefslogtreecommitdiff
path: root/ld/ldlnk960.c
blob: f7f725957c212f7b890686e476f8c12ee7e24e0a (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
/* Copyright (C) 1991 Free Software Foundation, Inc.

This file is part of GLD, the Gnu Linker.

GLD 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 1, or (at your option)
any later version.

GLD 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 GLD; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

/*
   $Id$ 
*/

/* 

   Written by Steve Chamberlain steve@cygnus.com

 * intel coff loader emulation specific stuff
 */

#include "sysdep.h"
#include "bfd.h"

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

extern  boolean lang_float_flag;
extern bfd *output_bfd;



extern enum bfd_architecture ldfile_output_architecture;
extern unsigned long ldfile_output_machine;
extern char *ldfile_output_machine_name;


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(list, name)
lib_list_type ***list;
char *name;
{
  lib_list_type *element = 
    (lib_list_type *)(ldmalloc(sizeof(lib_list_type)));

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

}

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

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



#ifdef GNU960

static void 
lnk960_before_parse()
{
  static char *env_variables[] = { "G960LIB", "G960BASE", 0 };
  char **p;
  char *env ;

  for ( p = env_variables; *p; p++ ){
    env =  (char *) getenv(*p);
    if (env) {
      ldfile_add_library_path(concat(env,"/lib/libcoff",""));
    }
  }

  env= (char *) getenv("I960BASE");
  if ( env ) {
    ldfile_add_library_path(concat(env,"/lib",""));
  }

  ldfile_output_architecture = bfd_arch_i960;
  ldfile_output_machine = bfd_mach_i960_core;
}

#else	/* not GNU960 */

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

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


  ldfile_add_library_path(concat(name,"/lib",""));
  ldfile_output_architecture = bfd_arch_i960;
  ldfile_output_machine = bfd_mach_i960_core;
}

#endif	/* GNU960 */


static void
add_on(list, search)
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()
{

  /* 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);
}

static void
lnk960_before_allocation()
{
}
static void
lnk960_after_allocation()
{
  extern ld_config_type config;
  if (config.relocateable_output == false) {
    lang_abs_symbol_at_end_of(".text","_etext");
    lang_abs_symbol_at_end_of(".data","_edata");
    lang_abs_symbol_at_beginning_of(".bss","_bss_start");
    lang_abs_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_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",
	0,(char *)NULL
};

static void
lnk960_set_output_arch()
{
  /* 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(output_bfd, ldfile_output_architecture, ldfile_output_machine);
}

static char *
lnk960_choose_target()
{
#ifdef GNU960

  return bfd_make_targ_name(BFD_COFF_FORMAT,HOST_BYTE_ORDER_BIG_P);

#else

  char *from_outside = getenv(TARGET_ENVIRON);
  if (from_outside != (char *)NULL)
    return from_outside;
  return LNK960_TARGET;

#endif
}

/* The default script if none is offered */
static char *lnk960_script = 
#include "ldlnk960.x"
;


static char *lnk960_script_relocateable = 
#include "ldlnk960r.x"
;

static char *lnk960_get_script()
{
  extern ld_config_type config;
  if (config.relocateable_output) {
    return lnk960_script_relocateable;
  }
  return lnk960_script;
}
struct ld_emulation_xfer_struct ld_lnk960_emulation = 
{
  lnk960_before_parse,
  lnk960_syslib,
  lnk960_hll,
  lnk960_after_parse,
  lnk960_after_allocation,
  lnk960_set_output_arch,
  lnk960_choose_target,
  lnk960_before_allocation,
  lnk960_get_script,
};