2005-12-15 Paolo Bonzini <bonzini@gnu.org>
[binutils.git] / bfd / nlm32-sparc.c
blobe647ad082aa579f9da3c2f5bdd3d3363d2c23b03
1 /* Support for 32-bit SPARC NLM (NetWare Loadable Module)
2 Copyright 1993, 1994, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
25 #define ARCH_SIZE 32
27 #include "nlm/sparc32-ext.h"
28 #define Nlm_External_Fixed_Header Nlm32_sparc_External_Fixed_Header
30 #include "libnlm.h"
32 enum reloc_type
34 R_SPARC_NONE = 0,
35 R_SPARC_8, R_SPARC_16, R_SPARC_32,
36 R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32,
37 R_SPARC_WDISP30, R_SPARC_WDISP22,
38 R_SPARC_HI22, R_SPARC_22,
39 R_SPARC_13, R_SPARC_LO10,
40 R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22,
41 R_SPARC_PC10, R_SPARC_PC22,
42 R_SPARC_WPLT30,
43 R_SPARC_COPY,
44 R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
45 R_SPARC_RELATIVE,
46 R_SPARC_UA32,
47 R_SPARC_max
50 static reloc_howto_type nlm32_sparc_howto_table[] =
52 HOWTO (R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, 0,"R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
53 HOWTO (R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_8", FALSE,0,0x000000ff,TRUE),
54 HOWTO (R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
55 HOWTO (R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_32", FALSE,0,0xffffffff,TRUE),
56 HOWTO (R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
57 HOWTO (R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
58 HOWTO (R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_DISP32", FALSE,0,0x00ffffff,TRUE),
59 HOWTO (R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
60 HOWTO (R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, 0,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
61 HOWTO (R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, 0,"R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
62 HOWTO (R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_22", FALSE,0,0x003fffff,TRUE),
63 HOWTO (R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_13", FALSE,0,0x00001fff,TRUE),
64 HOWTO (R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, 0,"R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
65 HOWTO (R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
66 HOWTO (R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
67 HOWTO (R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
68 HOWTO (R_SPARC_PC10, 0,2,10,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
69 HOWTO (R_SPARC_PC22, 0,2,22,FALSE,0,complain_overflow_bitfield,0,"R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
70 HOWTO (R_SPARC_WPLT30, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_WPLT30", FALSE,0,0x00000000,TRUE),
71 HOWTO (R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
72 HOWTO (R_SPARC_GLOB_DAT,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
73 HOWTO (R_SPARC_JMP_SLOT,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
74 HOWTO (R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
75 HOWTO (R_SPARC_UA32, 0,0,00,FALSE,0,complain_overflow_dont, 0,"R_SPARC_UA32", FALSE,0,0x00000000,TRUE),
78 /* Read a NetWare sparc reloc. */
80 struct nlm32_sparc_reloc_ext
82 unsigned char offset[4];
83 unsigned char addend[4];
84 unsigned char type[1];
85 unsigned char pad1[3];
88 static bfd_boolean
89 nlm_sparc_read_reloc (bfd *abfd,
90 nlmNAME (symbol_type) *sym ATTRIBUTE_UNUSED,
91 asection **secp,
92 arelent *rel)
94 bfd_vma val, addend;
95 unsigned int index;
96 unsigned int type;
97 struct nlm32_sparc_reloc_ext tmp_reloc;
98 asection *code_sec, *data_sec;
100 if (bfd_bread (&tmp_reloc, (bfd_size_type) 12, abfd) != 12)
101 return FALSE;
103 code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
104 data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
106 *secp = code_sec;
108 val = bfd_get_32 (abfd, tmp_reloc.offset);
109 addend = bfd_get_32 (abfd, tmp_reloc.addend);
110 type = bfd_get_8 (abfd, tmp_reloc.type);
112 rel->address = val;
113 rel->addend = addend;
114 rel->howto = NULL;
116 for (index = 0;
117 index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type);
118 index++)
119 if (nlm32_sparc_howto_table[index].type == type)
121 rel->howto = &nlm32_sparc_howto_table[index];
122 break;
125 #ifdef DEBUG
126 fprintf (stderr, "%s: address = %08lx, addend = %08lx, type = %d, howto = %08lx\n",
127 __FUNCTION__, rel->address, rel->addend, type, rel->howto);
128 #endif
129 return TRUE;
133 /* Write a NetWare sparc reloc. */
135 static bfd_boolean
136 nlm_sparc_write_reloc (bfd * abfd, asection * sec, arelent * rel)
138 bfd_vma val;
139 struct nlm32_sparc_reloc_ext tmp_reloc;
140 unsigned int index;
141 int type = -1;
142 reloc_howto_type *tmp;
144 for (index = 0;
145 index < sizeof (nlm32_sparc_howto_table) / sizeof (reloc_howto_type);
146 index++)
148 tmp = &nlm32_sparc_howto_table[index];
150 if (tmp->rightshift == rel->howto->rightshift
151 && tmp->size == rel->howto->size
152 && tmp->bitsize == rel->howto->bitsize
153 && tmp->pc_relative == rel->howto->pc_relative
154 && tmp->bitpos == rel->howto->bitpos
155 && tmp->src_mask == rel->howto->src_mask
156 && tmp->dst_mask == rel->howto->dst_mask)
158 type = tmp->type;
159 break;
162 if (type == -1)
163 abort ();
165 /* Netware wants a list of relocs for each address.
166 Format is:
167 long offset
168 long addend
169 char type
170 That should be it. */
172 /* The value we write out is the offset into the appropriate
173 segment. This offset is the section vma, adjusted by the vma of
174 the lowest section in that segment, plus the address of the
175 relocation. */
176 val = bfd_get_section_vma (abfd, sec) + rel->address;
178 #ifdef DEBUG
179 fprintf (stderr, "%s: val = %08lx, addend = %08lx, type = %d\n",
180 __FUNCTION__, val, rel->addend, rel->howto->type);
181 #endif
182 bfd_put_32 (abfd, val, tmp_reloc.offset);
183 bfd_put_32 (abfd, rel->addend, tmp_reloc.addend);
184 bfd_put_8 (abfd, (short) (rel->howto->type), tmp_reloc.type);
186 if (bfd_bwrite (&tmp_reloc, (bfd_size_type) 12, abfd) != 12)
187 return FALSE;
189 return TRUE;
192 /* Mangle relocs for SPARC NetWare. We can just use the standard
193 SPARC relocs. */
195 static bfd_boolean
196 nlm_sparc_mangle_relocs (bfd *abfd ATTRIBUTE_UNUSED,
197 asection *sec ATTRIBUTE_UNUSED,
198 const void * data ATTRIBUTE_UNUSED,
199 bfd_vma offset ATTRIBUTE_UNUSED,
200 bfd_size_type count ATTRIBUTE_UNUSED)
202 return TRUE;
205 /* Read a NetWare sparc import record. */
207 static bfd_boolean
208 nlm_sparc_read_import (bfd *abfd, nlmNAME (symbol_type) *sym)
210 struct nlm_relent *nlm_relocs; /* Relocation records for symbol. */
211 bfd_size_type rcount; /* Number of relocs. */
212 bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Temporary 32-bit value. */
213 unsigned char symlength; /* Length of symbol name. */
214 char *name;
216 /* First, read in the number of relocation
217 entries for this symbol. */
218 if (bfd_bread (temp, (bfd_size_type) 4, abfd) != 4)
219 return FALSE;
221 rcount = bfd_get_32 (abfd, temp);
223 /* Next, read in the length of the symbol. */
224 if (bfd_bread (& symlength, (bfd_size_type) sizeof (symlength), abfd)
225 != sizeof (symlength))
226 return FALSE;
227 sym -> symbol.the_bfd = abfd;
228 name = bfd_alloc (abfd, (bfd_size_type) symlength + 1);
229 if (name == NULL)
230 return FALSE;
232 /* Then read in the symbol. */
233 if (bfd_bread (name, (bfd_size_type) symlength, abfd) != symlength)
234 return FALSE;
235 name[symlength] = '\0';
236 sym -> symbol.name = name;
237 sym -> symbol.flags = 0;
238 sym -> symbol.value = 0;
239 sym -> symbol.section = bfd_und_section_ptr;
241 /* Next, start reading in the relocs. */
242 nlm_relocs = bfd_alloc (abfd, rcount * sizeof (struct nlm_relent));
243 if (!nlm_relocs)
244 return FALSE;
245 sym -> relocs = nlm_relocs;
246 sym -> rcnt = 0;
247 while (sym -> rcnt < rcount)
249 asection *section;
251 if (! nlm_sparc_read_reloc (abfd, sym, &section, &nlm_relocs -> reloc))
252 return FALSE;
253 nlm_relocs -> section = section;
254 nlm_relocs++;
255 sym -> rcnt++;
258 return TRUE;
261 static bfd_boolean
262 nlm_sparc_write_import (bfd * abfd, asection * sec, arelent * rel)
264 char temp[4];
265 asection *code, *data, *bss, *symsec;
266 bfd_vma base;
268 code = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
269 data = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
270 bss = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
271 symsec = (*rel->sym_ptr_ptr)->section;
273 if (symsec == code)
274 base = 0;
275 else if (symsec == data)
276 base = code->size;
277 else if (symsec == bss)
278 base = code->size + data->size;
279 else
280 base = 0;
282 #ifdef DEBUG
283 fprintf (stderr, "%s: <%x, 1>\n\t",
284 __FUNCTION__, base + (*rel->sym_ptr_ptr)->value);
285 #endif
286 bfd_put_32 (abfd, base + (*rel->sym_ptr_ptr)->value, temp);
287 if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4)
288 return FALSE;
289 bfd_put_32 (abfd, (bfd_vma) 1, temp);
290 if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4)
291 return FALSE;
292 if (! nlm_sparc_write_reloc (abfd, sec, rel))
293 return FALSE;
294 return TRUE;
297 /* Write out an external reference. */
299 static bfd_boolean
300 nlm_sparc_write_external (bfd *abfd,
301 bfd_size_type count,
302 asymbol *sym,
303 struct reloc_and_sec *relocs)
305 unsigned int i;
306 bfd_byte len;
307 unsigned char temp[NLM_TARGET_LONG_SIZE];
309 bfd_put_32 (abfd, count, temp);
310 if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp))
311 return FALSE;
313 len = strlen (sym->name);
314 if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd)
315 != sizeof (bfd_byte))
316 || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
317 return FALSE;
319 for (i = 0; i < count; i++)
320 if (! nlm_sparc_write_reloc (abfd, relocs[i].sec, relocs[i].rel))
321 return FALSE;
323 return TRUE;
326 static bfd_boolean
327 nlm_sparc_write_export (bfd * abfd, asymbol * sym, bfd_vma value)
329 bfd_byte len;
330 bfd_byte temp[4];
332 #ifdef DEBUG
333 fprintf (stderr, "%s: <%x, %d, %s>\n",
334 __FUNCTION__, value, strlen (sym->name), sym->name);
335 #endif
336 bfd_put_32 (abfd, value, temp);
337 len = strlen (sym->name);
339 if (bfd_bwrite (temp, (bfd_size_type) 4, abfd) != 4
340 || bfd_bwrite (&len, (bfd_size_type) 1, abfd) != 1
341 || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
342 return FALSE;
344 return TRUE;
347 #undef nlm_swap_fixed_header_in
348 #undef nlm_swap_fixed_header_out
350 #include "nlmswap.h"
352 static const struct nlm_backend_data nlm32_sparc_backend =
354 "NetWare SPARC Module \032",
355 sizeof (Nlm32_sparc_External_Fixed_Header),
356 0, /* Optional_prefix_size. */
357 bfd_arch_sparc,
359 FALSE,
360 0, /* Backend_object_p. */
361 0, /* Write_prefix_func. */
362 nlm_sparc_read_reloc,
363 nlm_sparc_mangle_relocs,
364 nlm_sparc_read_import,
365 nlm_sparc_write_import,
366 0, /* Set_public_section. */
367 0, /* Get_public_offset. */
368 nlm_swap_fixed_header_in,
369 nlm_swap_fixed_header_out,
370 nlm_sparc_write_external,
371 nlm_sparc_write_export
374 #define TARGET_BIG_NAME "nlm32-sparc"
375 #define TARGET_BIG_SYM nlmNAME (sparc_vec)
376 #define TARGET_BACKEND_DATA & nlm32_sparc_backend
378 #include "nlm-target.h"