aboutsummaryrefslogtreecommitdiff
path: root/bfd/coff-sparc.c
blob: 273e30bd1c0aba173ce4e04234e4e0a0c56018d5 (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
/* BFD back-end for Sparc COFF files.
   Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
   Written by Cygnus Support.

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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "obstack.h"
#include "coff/sparc.h"
#include "coff/internal.h"
#include "libcoff.h"

#define BADMAG(x) ((x).f_magic != SPARCMAGIC && (x).f_magic != LYNXCOFFMAGIC)

/* The page size is a guess based on ELF.  */
#define COFF_PAGE_SIZE 0x10000

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
  };

#if 0
static CONST char *CONST reloc_type_names[] =
{
  "R_SPARC_NONE",
  "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",
};
#endif

/* This is stolen pretty directly from elf.c.  */
static bfd_reloc_status_type
bfd_coff_generic_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR,
				asection *, bfd *, char **));

static bfd_reloc_status_type
bfd_coff_generic_reloc (abfd, reloc_entry, symbol, data, input_section,
			output_bfd, error_message)
     bfd *abfd;
     arelent *reloc_entry;
     asymbol *symbol;
     PTR data;
     asection *input_section;
     bfd *output_bfd;
     char **error_message;
{
  if (output_bfd != (bfd *) NULL
      && (symbol->flags & BSF_SECTION_SYM) == 0
      && reloc_entry->addend == 0)
    {
      reloc_entry->address += input_section->output_offset;
      return bfd_reloc_ok;
    }

  return bfd_reloc_continue;
}

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

struct coff_reloc_map {
  unsigned char bfd_reloc_val;
  unsigned char coff_reloc_val;
};

static CONST struct coff_reloc_map sparc_reloc_map[] =
{
  { BFD_RELOC_NONE, R_SPARC_NONE, },
  { BFD_RELOC_16, R_SPARC_16, },
  { BFD_RELOC_8, R_SPARC_8 },
  { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
  { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits.  */
  { BFD_RELOC_32, R_SPARC_32 },
  { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
  { BFD_RELOC_HI22, R_SPARC_HI22 },
  { BFD_RELOC_LO10, R_SPARC_LO10, },
  { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
  { BFD_RELOC_SPARC22, R_SPARC_22 },
  { BFD_RELOC_SPARC13, R_SPARC_13 },
  { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
  { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
  { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
  { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
  { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
  { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
  { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
  { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
  { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
  { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
  { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
  /*  { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
};

static CONST struct reloc_howto_struct *
coff_sparc_reloc_type_lookup (abfd, code)
     bfd *abfd;
     bfd_reloc_code_real_type code;
{
  int i;
  for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_reloc_map); i++)
    {
      if (sparc_reloc_map[i].bfd_reloc_val == code)
	return &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val];
    }
  return 0;
}
#define coff_bfd_reloc_type_lookup	coff_sparc_reloc_type_lookup

static void
rtype2howto (cache_ptr, dst)
     arelent *cache_ptr;
     struct internal_reloc *dst;
{
  BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max);
  cache_ptr->howto = &coff_sparc_howto_table[dst->r_type];
}

#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)

#define SWAP_IN_RELOC_OFFSET	bfd_h_get_32
#define SWAP_OUT_RELOC_OFFSET	bfd_h_put_32
/* This is just like the standard one, except for the addition of the
   last line, the adjustment of the addend.  */
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr)                \
  {                                                             \
    coff_symbol_type *coffsym = (coff_symbol_type *) NULL;      \
    if (ptr && bfd_asymbol_bfd (ptr) != abfd)                   \
      coffsym = (obj_symbols (abfd)                             \
                 + (cache_ptr->sym_ptr_ptr - symbols));         \
    else if (ptr)                                               \
      coffsym = coff_symbol_from (abfd, ptr);                   \
    if (coffsym != (coff_symbol_type *) NULL                    \
        && coffsym->native->u.syment.n_scnum == 0)              \
      cache_ptr->addend = 0;                                    \
    else if (ptr && bfd_asymbol_bfd (ptr) == abfd               \
             && ptr->section != (asection *) NULL)              \
      cache_ptr->addend = - (ptr->section->vma + ptr->value);   \
    else                                                        \
      cache_ptr->addend = 0;                                    \
    cache_ptr->addend += reloc.r_offset;			\
  }

/* Clear the r_spare field in relocs.  */
#define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \
  do { \
       dst->r_spare[0] = 0; \
       dst->r_spare[1] = 0; \
     } while (0)

#define __A_MAGIC_SET__

/* Enable Sparc-specific hacks in coffcode.h. */

#define COFF_SPARC

#include "coffcode.h"

bfd_target
#ifdef TARGET_SYM
  TARGET_SYM =
#else
  sparccoff_vec =
#endif
{
#ifdef TARGET_NAME
  TARGET_NAME,
#else
  "coff-sparc",			/* name */
#endif
  bfd_target_coff_flavour,
  true,			/* data byte order is big */
  true,			/* header byte order is big */

  (HAS_RELOC | EXEC_P |		/* object flags */
   HAS_LINENO | HAS_DEBUG |
   HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),

  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
  0,				/* leading underscore */
  '/',				/* ar_pad_char */
  15,				/* ar_max_namelen */

  2,				/* minimum alignment power */
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
     bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
     bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */

/* Note that we allow an object file to be treated as a core file as well. */
    {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
       bfd_generic_archive_p, coff_object_p},
    {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
       bfd_false},
    {bfd_false, coff_write_object_contents, /* bfd_write_contents */
       _bfd_write_archive_contents, bfd_false},

     BFD_JUMP_TABLE_GENERIC (coff),
     BFD_JUMP_TABLE_COPY (coff),
     BFD_JUMP_TABLE_CORE (_bfd_nocore),
     BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
     BFD_JUMP_TABLE_SYMBOLS (coff),
     BFD_JUMP_TABLE_RELOCS (coff),
     BFD_JUMP_TABLE_WRITE (coff),
     BFD_JUMP_TABLE_LINK (coff),
     BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),

  COFF_SWAP_TABLE,
};