summaryrefslogtreecommitdiffstats
path: root/bfd/nlm32-sparc.c
blob: ba60e44016d7828893d9bdf38a352e1245de6f55 (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
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
/* Support for 32-bit SPARC NLM (NetWare Loadable Module)
   Copyright 1993, 1994, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   2007, 2009, 2010 Free Software Foundation, Inc.

   This file is part of BFD, the Binary File Descriptor library.

   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 "bfd.h"
#include "libbfd.h"

#define ARCH_SIZE 32

#include "nlm/sparc32-ext.h"
#define Nlm_External_Fixed_Header	Nlm32_sparc_External_Fixed_Header

#include "libnlm.h"

enum reloc_type
{
  R_SPARC_NONE = 0,
  R_SPARC_8,		R_SPARC_16,		R_SPARC_32,
  R_SPARC_DISP8,	R_SPARC_DISP16,		R_SPARC_DISP32,
  R_SPARC_WDISP30,	R_SPARC_WDISP22,
  R_SPARC_HI22,		R_SPARC_22,
  R_SPARC_13,		R_SPARC_LO10,
  R_SPARC_GOT10,	R_SPARC_GOT13,		R_SPARC_GOT22,
  R_SPARC_PC10,		R_SPARC_PC22,
  R_SPARC_WPLT30,
  R_SPARC_COPY,
  R_SPARC_GLOB_DAT,	R_SPARC_JMP_SLOT,
  R_SPARC_RELATIVE,
  R_SPARC_UA32,
  R_SPARC_max
};

static reloc_howto_type nlm32_sparc_howto_table[] =
{
  HOWTO (R_SPARC_NONE,    0,0, 0,FALSE,0,complain_overflow_dont,    0,"R_SPARC_NONE",    FALSE,0,0x00000000,TRUE),
  HOWTO (R_SPARC_8,       0,0, 8,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_8",       FALSE,0,0x000000ff,TRUE),
  HOWTO (R_SPARC_16,      0,1,16,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_16",      FALSE,0,0x0000ffff,TRUE),
  HOWTO (R_SPARC_32,      0,2,32,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_32",      FALSE,0,0xffffffff,TRUE),
  HOWTO (R_SPARC_DISP8,   0,0, 8,TRUE, 0,complain_overflow_signed,  0,"R_SPARC_DISP8",   FALSE,0,0x000000ff,TRUE),
  HOWTO (R_SPARC_DISP16,  0,1,16,TRUE, 0,complain_overflow_signed,  0,"R_SPARC_DISP16",  FALSE,0,0x0000ffff,TRUE),
  HOWTO (R_SPARC_DISP32,  0,2,32,TRUE, 0,complain_overflow_signed,  0,"R_SPARC_DISP32",  FALSE,0,0x00ffffff,TRUE),
  HOWTO (R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed,  0,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
  HOWTO (R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed,  0,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
  HOWTO (R_SPARC_HI22,   10,2,22,FALSE,0,complain_overflow_dont,    0,"R_SPARC_HI22",    FALSE,0,0x003fffff,TRUE),
  HOWTO (R_SPARC_22,      0,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_22",      FALSE,0,0x003fffff,TRUE),
  HOWTO (R_SPARC_13,      0,2,13,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_13",      FALSE,0,0x00001fff,TRUE),
  HOWTO (R_SPARC_LO10,    0,2,10,FALSE,0,complain_overflow_dont,    0,"R_SPARC_LO10",    FALSE,0,0x000003ff,TRUE),
  HOWTO (R_SPARC_GOT10,   0,2,10,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT10",   FALSE,0,0x000003ff,TRUE),
  HOWTO (R_SPARC_GOT13,   0,2,13,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT13",   FALSE,0,0x00001fff,TRUE),
  HOWTO (R_SPARC_GOT22,  10,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT22",   FALSE,0,0x003fffff,TRUE),
  HOWTO (R_SPARC_PC10,    0,2,10,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_PC10",    FALSE,0,0x000003ff,TRUE),
  HOWTO (R_SPARC_PC22,    0,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_PC22",    FALSE,0,0x003fffff,TRUE),
  HOWTO (R_SPARC_WPLT30,  0,0,00,FALSE,0,complain_overflow_dont,    0,"R_SPARC_WPLT30",  FALSE,0,0x00000000,TRUE),
  HOWTO (R_SPARC_COPY,    0,0,00,FALSE,0,complain_overflow_dont,    0,"R_SPARC_COPY",    FALSE,0,0x00000000,TRUE),
  HOWTO (R_SPARC_GLOB_DAT,0,0,00,FALSE,0,complain_overflow_dont,    0,"R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
  HOWTO (R_SPARC_JMP_SLOT,0,0,00,FALSE,0,complain_overflow_dont,    0,"R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
  HOWTO (R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont,    0,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
  HOWTO (R_SPARC_UA32,    0,0,00,FALSE,0,complain_overflow_dont,    0,"R_SPARC_UA32",    FALSE,0,0x00000000,TRUE),
};

/* Read a NetWare sparc reloc.  */

struct nlm32_sparc_reloc_ext
{
  unsigned char offset[4];
  unsigned char addend[4];
  unsigned char type[1];
  unsigned char pad1[3];
};

static bfd_boolean
nlm_sparc_read_reloc (bfd *abfd,
		      nlmNAME (symbol_type) *sym ATTRIBUTE_UNUSED,
		      asection **secp,
		      arelent *rel)
{
  bfd_vma val, addend;
  unsigned int howto_index;
  unsigned int type;
  struct nlm32_sparc_reloc_ext tmp_reloc;
  asection *code_sec;

  if (bfd_bread (&tmp_reloc, (bfd_size_type) 12, abfd) != 12)
    return FALSE;

  code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
  *secp = code_sec;

  val = bfd_get_32 (abfd, tmp_reloc.offset);
  addend = bfd_get_32 (abfd, tmp_reloc.addend);
  type = bfd_get_8 (abfd, tmp_reloc.type);

  rel->address = val;
  rel->addend = addend;
  rel->howto = NULL;

  for (howto_index = 0;
       howto_index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type);
       howto_index++)
    if (nlm32_sparc_howto_table[howto_index].type == type)
      {
	rel->howto = &nlm32_sparc_howto_table[howto_index];
	break;
      }

#ifdef DEBUG
  fprintf (stderr, "%s:  address = %08lx, addend = %08lx, type = %u, howto = %p\n",
	   __FUNCTION__, (unsigned long) rel->address,
	   (unsigned long) rel->addend, type, rel->howto);
#endif
  return TRUE;

}

/* Write a NetWare sparc reloc.  */

static bfd_boolean
nlm_sparc_write_reloc (bfd * abfd, asection * sec, arelent * rel)
{
  bfd_vma val;
  struct nlm32_sparc_reloc_ext tmp_reloc;
  unsigned int howto_index;
  int type = -1;
  reloc_howto_type *tmp;

  for (howto_index = 0;
       howto_index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type);
       howto_index++)
    {
      tmp = &nlm32_sparc_howto_table[howto_index];

      if (tmp->rightshift == rel->howto->rightshift
	  && tmp->size == rel->howto->size
	  && tmp->bitsize == rel->howto->bitsize
	  && tmp->pc_relative == rel->howto->pc_relative
	  && tmp->bitpos == rel->howto->bitpos
	  && tmp->src_mask == rel->howto->src_mask
	  && tmp->dst_mask == rel->howto->dst_mask)
	{
	  type = tmp->type;
	  break;
	}
    }
  if (type == -1)
    abort ();

  /* Netware wants a list of relocs for each address.
     Format is:
    	long	offset
    	long	addend
    	char	type
     That should be it.  */

  /* The value we write out is the offset into the appropriate
     segment.  This offset is the section vma, adjusted by the vma of
     the lowest section in that segment, plus the address of the
     relocation.  */
  val = bfd_get_section_vma (abfd, sec) + rel->address;

#ifdef DEBUG
  fprintf (stderr, "%s:  val = %08lx, addend = %08lx, type = %u\n",
	   __FUNCTION__, (unsigned long) val, (unsigned long) rel->addend,
	   rel->howto->type);
#endif
  bfd_put_32 (abfd, val, tmp_reloc.offset);
  bfd_put_32 (abfd, rel->addend, tmp_reloc.addend);
  bfd_put_8 (abfd, (short) (rel->howto->type), tmp_reloc.type);

  if (bfd_bwrite (&tmp_reloc, (bfd_size_type) 12, abfd) != 12)
    return FALSE;

  return TRUE;
}

/* Mangle relocs for SPARC NetWare.  We can just use the standard
   SPARC relocs.  */

static bfd_boolean
nlm_sparc_mangle_relocs (bfd *abfd ATTRIBUTE_UNUSED,
			 asection *sec ATTRIBUTE_UNUSED,
			 const void * data ATTRIBUTE_UNUSED,
			 bfd_vma offset ATTRIBUTE_UNUSED,
			 bfd_size_type count ATTRIBUTE_UNUSED)
{
  return TRUE;
}

/* Read a NetWare sparc import record.  */

static bfd_boolean
nlm_sparc_read_import (bfd *abfd, nlmNAME (symbol_type) *sym)
{
  struct nlm_relent *nlm_relocs;	/* Relocation records for symbol.  */
  bfd_size_type rcount;			/* Number of relocs.  */
  bfd_byte temp[NLM_TARGET_LONG_SIZE];	/* Temporary 32-bit value.  */
  unsigned char symlength;		/* Length of symbol name.  */
  char *name;

  /* First, read in the number of relocation
     entries for this symbol.  */
  if (bfd_bread (temp, (bfd_size_type) 4, abfd) != 4)
    return FALSE;

  rcount = bfd_get_32 (abfd, temp);

  /* Next, read in the length of the symbol.  */
  if (bfd_bread (& symlength, (bfd_size_type) sizeof (symlength), abfd)
      != sizeof (symlength))
    return FALSE;
  sym -> symbol.the_bfd = abfd;
  name = bfd_alloc (abfd, (bfd_size_type) symlength + 1);
  if (name == NULL)
    return FALSE;

  /* Then read in the symbol.  */
  if (bfd_bread (name, (bfd_size_type) symlength, abfd) != symlength)
    return FALSE;
  name[symlength] = '\0';
  sym -> symbol.name = name;
  sym -> symbol.flags = 0;
  sym -> symbol.value = 0;
  sym -> symbol.section = bfd_und_section_ptr;

  /* Next, start reading in the relocs.  */
  nlm_relocs = bfd_alloc (abfd, rcount * sizeof (struct nlm_relent));
  if (!nlm_relocs)
    return FALSE;
  sym -> relocs = nlm_relocs;
  sym -> rcnt = 0;
  while (sym -> rcnt < rcount)
    {
      asection *section;

      if (! nlm_sparc_read_reloc (abfd, sym, &section, &nlm_relocs -> reloc))
	return FALSE;
      nlm_relocs -> section = section;
      nlm_relocs++;
      sym -> rcnt++;
    }

  return TRUE;
}

static bfd_boolean
nlm_sparc_write_import (bfd * abfd, asection * sec, arelent * rel)
{
  char temp[4];
  asection *code, *data, *bss, *symsec;
  bfd_vma base;

  code = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
  data = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
  bss = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
  symsec = (*rel->sym_ptr_ptr)->section;

  if (symsec == code)
    base = 0;
  else if (symsec == data)
    base = code->size;
  else if (symsec == bss)
    base = code->size + data->size;
  else
    base = 0;

#ifdef DEBUG
  fprintf (stderr, "%s:  <%lx, 1>\n\t",
	   __FUNCTION__, (unsigned long) (base + (*rel->sym_ptr_ptr)->value));
#endif
  bfd_put_32 (abfd, base + (*rel->sym_ptr_ptr)->value, temp);
  if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4)
    return FALSE;
  bfd_put_32 (abfd, (bfd_vma) 1, temp);
  if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4)
    return FALSE;
  if (! nlm_sparc_write_reloc (abfd, sec, rel))
    return FALSE;
  return TRUE;
}

/* Write out an external reference.  */

static bfd_boolean
nlm_sparc_write_external (bfd *abfd,
			  bfd_size_type count,
			  asymbol *sym,
			  struct reloc_and_sec *relocs)
{
  unsigned int i;
  bfd_byte len;
  unsigned char temp[NLM_TARGET_LONG_SIZE];

  bfd_put_32 (abfd, count, temp);
  if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp))
    return FALSE;

  len = strlen (sym->name);
  if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd)
       != sizeof (bfd_byte))
      || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
    return FALSE;

  for (i = 0; i < count; i++)
    if (! nlm_sparc_write_reloc (abfd, relocs[i].sec, relocs[i].rel))
      return FALSE;

  return TRUE;
}

static bfd_boolean
nlm_sparc_write_export (bfd * abfd, asymbol * sym, bfd_vma value)
{
  bfd_byte len;
  bfd_byte temp[4];

#ifdef DEBUG
  fprintf (stderr, "%s: <%lx, %u, %s>\n",
	   __FUNCTION__, (unsigned long) value, strlen (sym->name), sym->name);
#endif
  bfd_put_32 (abfd, value, temp);
  len = strlen (sym->name);

  if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4
      || bfd_bwrite (&len, (bfd_size_type) 1, abfd) != 1
      || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
    return FALSE;

  return TRUE;
}

#undef nlm_swap_fixed_header_in
#undef nlm_swap_fixed_header_out

#include "nlmswap.h"

static const struct nlm_backend_data nlm32_sparc_backend =
{
  "NetWare SPARC Module   \032",
  sizeof (Nlm32_sparc_External_Fixed_Header),
  0,	/* Optional_prefix_size.  */
  bfd_arch_sparc,
  0,
  FALSE,
  0,	/* Backend_object_p.  */
  0,	/* Write_prefix_func.  */
  nlm_sparc_read_reloc,
  nlm_sparc_mangle_relocs,
  nlm_sparc_read_import,
  nlm_sparc_write_import,
  0,	/* Set_public_section.  */
  0,	/* Get_public_offset.  */
  nlm_swap_fixed_header_in,
  nlm_swap_fixed_header_out,
  nlm_sparc_write_external,
  nlm_sparc_write_export
};

#define TARGET_BIG_NAME		"nlm32-sparc"
#define TARGET_BIG_SYM		nlmNAME (sparc_vec)
#define TARGET_BACKEND_DATA	& nlm32_sparc_backend

#include "nlm-target.h"
OpenPOWER on IntegriCloud