1 /* BFD back-end for TMS320C4X coff binaries.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2005, 2007,
3 2008, 2012 Free Software Foundation, Inc.
5 Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz)
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
28 #include "coff/tic4x.h"
29 #include "coff/internal.h"
33 #define F_LSYMS F_LSYMS_TICOFF
35 static reloc_howto_type *
36 coff_tic4x_rtype_to_howto (bfd *, asection *, struct internal_reloc *,
37 struct coff_link_hash_entry *,
38 struct internal_syment *, bfd_vma *);
40 tic4x_reloc_processing (arelent *, struct internal_reloc *,
41 asymbol **, bfd *, asection *);
43 /* Replace the stock _bfd_coff_is_local_label_name to recognize TI COFF local
46 ticoff_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
49 if (TICOFF_LOCAL_LABEL_P(name))
54 #define coff_bfd_is_local_label_name ticoff_bfd_is_local_label_name
56 #define RELOC_PROCESSING(RELENT,RELOC,SYMS,ABFD,SECT)\
57 tic4x_reloc_processing (RELENT,RELOC,SYMS,ABFD,SECT)
59 /* Customize coffcode.h; the default coff_ functions are set up to use
60 COFF2; coff_bad_format_hook uses BADMAG, so set that for COFF2.
61 The COFF1 and COFF0 vectors use custom _bad_format_hook procs
62 instead of setting BADMAG. */
63 #define BADMAG(x) COFF2_BADMAG(x)
65 #undef coff_rtype_to_howto
66 #define coff_rtype_to_howto coff_tic4x_rtype_to_howto
68 #ifndef bfd_pe_print_pdata
69 #define bfd_pe_print_pdata NULL
74 static bfd_reloc_status_type
75 tic4x_relocation (bfd *abfd ATTRIBUTE_UNUSED,
77 asymbol *symbol ATTRIBUTE_UNUSED,
78 void * data ATTRIBUTE_UNUSED,
79 asection *input_section,
81 char **error_message ATTRIBUTE_UNUSED)
83 if (output_bfd != (bfd *) NULL)
85 /* This is a partial relocation, and we want to apply the
86 relocation to the reloc entry rather than the raw data.
87 Modify the reloc inplace to reflect what we now know. */
88 reloc_entry->address += input_section->output_offset;
91 return bfd_reloc_continue;
94 reloc_howto_type tic4x_howto_table[] =
96 HOWTO(R_RELWORD, 0, 2, 16, FALSE, 0, complain_overflow_signed, tic4x_relocation, "RELWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
97 HOWTO(R_REL24, 0, 2, 24, FALSE, 0, complain_overflow_bitfield, tic4x_relocation, "REL24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
98 HOWTO(R_RELLONG, 0, 2, 32, FALSE, 0, complain_overflow_dont, tic4x_relocation, "RELLONG", TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_PCRWORD, 0, 2, 16, TRUE, 0, complain_overflow_signed, tic4x_relocation, "PCRWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
100 HOWTO(R_PCR24, 0, 2, 24, TRUE, 0, complain_overflow_signed, tic4x_relocation, "PCR24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
101 HOWTO(R_PARTLS16, 0, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "PARTLS16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
102 HOWTO(R_PARTMS8, 16, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "PARTMS8", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
103 HOWTO(R_RELWORD, 0, 2, 16, FALSE, 0, complain_overflow_signed, tic4x_relocation, "ARELWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
104 HOWTO(R_REL24, 0, 2, 24, FALSE, 0, complain_overflow_signed, tic4x_relocation, "AREL24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
105 HOWTO(R_RELLONG, 0, 2, 32, FALSE, 0, complain_overflow_signed, tic4x_relocation, "ARELLONG", TRUE, 0xffffffff, 0xffffffff, FALSE),
106 HOWTO(R_PCRWORD, 0, 2, 16, TRUE, 0, complain_overflow_signed, tic4x_relocation, "APCRWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
107 HOWTO(R_PCR24, 0, 2, 24, TRUE, 0, complain_overflow_signed, tic4x_relocation, "APCR24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
108 HOWTO(R_PARTLS16, 0, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "APARTLS16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
109 HOWTO(R_PARTMS8, 16, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "APARTMS8", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
111 #define HOWTO_SIZE (sizeof(tic4x_howto_table) / sizeof(tic4x_howto_table[0]))
113 #undef coff_bfd_reloc_type_lookup
114 #define coff_bfd_reloc_type_lookup tic4x_coff_reloc_type_lookup
115 #undef coff_bfd_reloc_name_lookup
116 #define coff_bfd_reloc_name_lookup tic4x_coff_reloc_name_lookup
118 /* For the case statement use the code values used tc_gen_reloc (defined in
119 bfd/reloc.c) to map to the howto table entries. */
121 static reloc_howto_type *
122 tic4x_coff_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
123 bfd_reloc_code_real_type code)
130 case BFD_RELOC_32: type = R_RELLONG; break;
131 case BFD_RELOC_24: type = R_REL24; break;
132 case BFD_RELOC_16: type = R_RELWORD; break;
133 case BFD_RELOC_24_PCREL: type = R_PCR24; break;
134 case BFD_RELOC_16_PCREL: type = R_PCRWORD; break;
135 case BFD_RELOC_HI16: type = R_PARTMS8; break;
136 case BFD_RELOC_LO16: type = R_PARTLS16; break;
141 for (i = 0; i < HOWTO_SIZE; i++)
143 if (tic4x_howto_table[i].type == type)
144 return tic4x_howto_table + i;
149 static reloc_howto_type *
150 tic4x_coff_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
156 i < sizeof (tic4x_howto_table) / sizeof (tic4x_howto_table[0]);
158 if (tic4x_howto_table[i].name != NULL
159 && strcasecmp (tic4x_howto_table[i].name, r_name) == 0)
160 return &tic4x_howto_table[i];
165 /* Code to turn a r_type into a howto ptr, uses the above howto table.
166 Called after some initial checking by the tic4x_rtype_to_howto fn
169 tic4x_lookup_howto (arelent *internal,
170 struct internal_reloc *dst)
173 int bank = (dst->r_symndx == -1) ? HOWTO_BANK : 0;
175 for (i = 0; i < HOWTO_SIZE; i++)
177 if (tic4x_howto_table[i].type == dst->r_type)
179 internal->howto = tic4x_howto_table + i + bank;
184 (*_bfd_error_handler) (_("Unrecognized reloc type 0x%x"),
185 (unsigned int) dst->r_type);
189 static reloc_howto_type *
190 coff_tic4x_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
192 struct internal_reloc *rel,
193 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED,
194 struct internal_syment *sym ATTRIBUTE_UNUSED,
199 if (rel->r_symndx == -1 && addendp != NULL)
200 /* This is a TI "internal relocation", which means that the relocation
201 amount is the amount by which the current section is being relocated
202 in the output section. */
203 *addendp = (sec->output_section->vma + sec->output_offset) - sec->vma;
205 tic4x_lookup_howto (&genrel, rel);
212 tic4x_reloc_processing (arelent *relent,
213 struct internal_reloc *reloc,
220 relent->address = reloc->r_vaddr;
222 if (reloc->r_symndx != -1)
224 if (reloc->r_symndx < 0 || reloc->r_symndx >= obj_conv_table_size (abfd))
226 (*_bfd_error_handler)
227 (_("%s: warning: illegal symbol index %ld in relocs"),
228 bfd_get_filename (abfd), reloc->r_symndx);
229 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
234 relent->sym_ptr_ptr = (symbols
235 + obj_convert (abfd)[reloc->r_symndx]);
236 ptr = *(relent->sym_ptr_ptr);
241 relent->sym_ptr_ptr = section->symbol_ptr_ptr;
242 ptr = *(relent->sym_ptr_ptr);
245 /* The symbols definitions that we have read in have been relocated
246 as if their sections started at 0. But the offsets refering to
247 the symbols in the raw data have not been modified, so we have to
248 have a negative addend to compensate.
250 Note that symbols which used to be common must be left alone. */
252 /* Calculate any reloc addend by looking at the symbol. */
253 CALC_ADDEND (abfd, ptr, *reloc, relent);
255 relent->address -= section->vma;
256 /* !! relent->section = (asection *) NULL; */
258 /* Fill in the relent->howto field from reloc->r_type. */
259 tic4x_lookup_howto (relent, reloc);
263 /* TI COFF v0, DOS tools (little-endian headers). */
264 CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff0_vec, "coff0-tic4x",
265 HAS_LOAD_PAGE, SEC_CODE | SEC_READONLY, '_',
266 NULL, &ticoff0_swap_table);
268 /* TI COFF v0, SPARC tools (big-endian headers). */
269 CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff0_beh_vec, "coff0-beh-tic4x",
270 HAS_LOAD_PAGE, SEC_CODE | SEC_READONLY, '_',
271 &tic4x_coff0_vec, &ticoff0_swap_table);
273 /* TI COFF v1, DOS tools (little-endian headers). */
274 CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff1_vec, "coff1-tic4x",
275 HAS_LOAD_PAGE, SEC_CODE | SEC_READONLY, '_',
276 &tic4x_coff0_beh_vec, &ticoff1_swap_table);
278 /* TI COFF v1, SPARC tools (big-endian headers). */
279 CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff1_beh_vec, "coff1-beh-tic4x",
280 HAS_LOAD_PAGE, SEC_CODE | SEC_READONLY, '_',
281 &tic4x_coff1_vec, &ticoff1_swap_table);
283 /* TI COFF v2, TI DOS tools output (little-endian headers). */
284 CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff2_vec, "coff2-tic4x",
285 HAS_LOAD_PAGE, SEC_CODE | SEC_READONLY, '_',
286 &tic4x_coff1_beh_vec, COFF_SWAP_TABLE);
288 /* TI COFF v2, TI SPARC tools output (big-endian headers). */
289 CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff2_beh_vec, "coff2-beh-tic4x",
290 HAS_LOAD_PAGE, SEC_CODE | SEC_READONLY, '_',
291 &tic4x_coff2_vec, COFF_SWAP_TABLE);