Commit | Line | Data |
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026df7c5 | 1 | /* BFD back-end for TMS320C4X coff binaries. |
be33c5dd | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2002, 2003 |
5af6ead6 | 3 | Free Software Foundation, Inc. |
be33c5dd | 4 | |
026df7c5 NC |
5 | Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz) |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
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 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
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. | |
18 | ||
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., 59 Temple Place - Suite 330, Boston, MA | |
22 | 02111-1307, USA. */ | |
23 | ||
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "libbfd.h" | |
27 | #include "bfdlink.h" | |
28 | #include "coff/tic4x.h" | |
29 | #include "coff/internal.h" | |
30 | #include "libcoff.h" | |
31 | ||
32 | #undef F_LSYMS | |
33 | #define F_LSYMS F_LSYMS_TICOFF | |
34 | ||
b34976b6 | 35 | static bfd_boolean ticoff_bfd_is_local_label_name |
5af6ead6 AM |
36 | PARAMS ((bfd *, const char *)); |
37 | static bfd_reloc_status_type tic4x_relocation | |
38 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char ** )); | |
39 | static reloc_howto_type *tic4x_coff_reloc_type_lookup | |
40 | PARAMS ((bfd *, bfd_reloc_code_real_type )); | |
41 | static void tic4x_lookup_howto | |
42 | PARAMS ((arelent *, struct internal_reloc * )); | |
43 | static reloc_howto_type *coff_tic4x_rtype_to_howto | |
44 | PARAMS ((bfd *, asection *, struct internal_reloc *, struct coff_link_hash_entry *, struct internal_syment *, bfd_vma * )); | |
45 | static void tic4x_reloc_processing | |
46 | PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection * )); | |
47 | ||
48 | ||
026df7c5 NC |
49 | /* Replace the stock _bfd_coff_is_local_label_name to recognize TI COFF local |
50 | labels. */ | |
b34976b6 | 51 | static bfd_boolean |
026df7c5 NC |
52 | ticoff_bfd_is_local_label_name (abfd, name) |
53 | bfd *abfd ATTRIBUTE_UNUSED; | |
54 | const char *name; | |
55 | { | |
56 | if (TICOFF_LOCAL_LABEL_P(name)) | |
b34976b6 AM |
57 | return TRUE; |
58 | return FALSE; | |
026df7c5 NC |
59 | } |
60 | ||
61 | #define coff_bfd_is_local_label_name ticoff_bfd_is_local_label_name | |
62 | ||
026df7c5 NC |
63 | #define RELOC_PROCESSING(RELENT,RELOC,SYMS,ABFD,SECT)\ |
64 | tic4x_reloc_processing (RELENT,RELOC,SYMS,ABFD,SECT) | |
65 | ||
66 | /* Customize coffcode.h; the default coff_ functions are set up to use | |
67 | COFF2; coff_bad_format_hook uses BADMAG, so set that for COFF2. | |
68 | The COFF1 and COFF0 vectors use custom _bad_format_hook procs | |
69 | instead of setting BADMAG. */ | |
70 | #define BADMAG(x) COFF2_BADMAG(x) | |
71 | #include "coffcode.h" | |
72 | ||
73 | static bfd_reloc_status_type | |
b34976b6 | 74 | tic4x_relocation (abfd, reloc_entry, symbol, data, input_section, |
026df7c5 NC |
75 | output_bfd, error_message) |
76 | bfd *abfd ATTRIBUTE_UNUSED; | |
77 | arelent *reloc_entry; | |
78 | asymbol *symbol ATTRIBUTE_UNUSED; | |
79 | PTR data ATTRIBUTE_UNUSED; | |
80 | asection *input_section; | |
81 | bfd *output_bfd; | |
82 | char **error_message ATTRIBUTE_UNUSED; | |
b34976b6 | 83 | { |
026df7c5 NC |
84 | if (output_bfd != (bfd *) NULL) |
85 | { | |
86 | /* This is a partial relocation, and we want to apply the | |
87 | relocation to the reloc entry rather than the raw data. | |
88 | Modify the reloc inplace to reflect what we now know. */ | |
89 | reloc_entry->address += input_section->output_offset; | |
90 | return bfd_reloc_ok; | |
91 | } | |
92 | return bfd_reloc_continue; | |
93 | } | |
94 | ||
b34976b6 | 95 | reloc_howto_type tic4x_howto_table[] = |
026df7c5 | 96 | { |
b34976b6 AM |
97 | HOWTO(R_RELWORD, 0, 2, 16, FALSE, 0, complain_overflow_signed, tic4x_relocation, "RELWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE), |
98 | HOWTO(R_REL24, 0, 2, 24, FALSE, 0, complain_overflow_bitfield, tic4x_relocation, "REL24", TRUE, 0x00ffffff, 0x00ffffff, FALSE), | |
99 | HOWTO(R_RELLONG, 0, 2, 32, FALSE, 0, complain_overflow_dont, tic4x_relocation, "RELLONG", TRUE, 0xffffffff, 0xffffffff, FALSE), | |
100 | HOWTO(R_PCRWORD, 0, 2, 16, TRUE, 0, complain_overflow_signed, tic4x_relocation, "PCRWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE), | |
101 | HOWTO(R_PCR24, 0, 2, 24, TRUE, 0, complain_overflow_signed, tic4x_relocation, "PCR24", TRUE, 0x00ffffff, 0x00ffffff, FALSE), | |
102 | HOWTO(R_PARTLS16, 0, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "PARTLS16", TRUE, 0x0000ffff, 0x0000ffff, FALSE), | |
103 | HOWTO(R_PARTMS8, 16, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "PARTMS8", TRUE, 0x0000ffff, 0x0000ffff, FALSE), | |
104 | HOWTO(R_RELWORD, 0, 2, 16, FALSE, 0, complain_overflow_signed, tic4x_relocation, "ARELWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE), | |
105 | HOWTO(R_REL24, 0, 2, 24, FALSE, 0, complain_overflow_signed, tic4x_relocation, "AREL24", TRUE, 0x00ffffff, 0x00ffffff, FALSE), | |
106 | HOWTO(R_RELLONG, 0, 2, 32, FALSE, 0, complain_overflow_signed, tic4x_relocation, "ARELLONG", TRUE, 0xffffffff, 0xffffffff, FALSE), | |
107 | HOWTO(R_PCRWORD, 0, 2, 16, TRUE, 0, complain_overflow_signed, tic4x_relocation, "APCRWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE), | |
108 | HOWTO(R_PCR24, 0, 2, 24, TRUE, 0, complain_overflow_signed, tic4x_relocation, "APCR24", TRUE, 0x00ffffff, 0x00ffffff, FALSE), | |
109 | HOWTO(R_PARTLS16, 0, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "APARTLS16", TRUE, 0x0000ffff, 0x0000ffff, FALSE), | |
110 | HOWTO(R_PARTMS8, 16, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "APARTMS8", TRUE, 0x0000ffff, 0x0000ffff, FALSE), | |
026df7c5 NC |
111 | }; |
112 | #define HOWTO_SIZE (sizeof(tic4x_howto_table) / sizeof(tic4x_howto_table[0])) | |
113 | ||
114 | #undef coff_bfd_reloc_type_lookup | |
115 | #define coff_bfd_reloc_type_lookup tic4x_coff_reloc_type_lookup | |
116 | ||
117 | /* For the case statement use the code values used tc_gen_reloc (defined in | |
118 | bfd/reloc.c) to map to the howto table entries. */ | |
119 | ||
120 | static reloc_howto_type * | |
121 | tic4x_coff_reloc_type_lookup (abfd, code) | |
122 | bfd *abfd ATTRIBUTE_UNUSED; | |
123 | bfd_reloc_code_real_type code; | |
124 | { | |
125 | unsigned int type; | |
126 | unsigned int i; | |
b34976b6 | 127 | |
026df7c5 NC |
128 | switch (code) |
129 | { | |
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; | |
137 | default: | |
138 | return NULL; | |
139 | } | |
b34976b6 | 140 | |
026df7c5 NC |
141 | for (i = 0; i < HOWTO_SIZE; i++) |
142 | { | |
143 | if (tic4x_howto_table[i].type == type) | |
144 | return tic4x_howto_table + i; | |
145 | } | |
146 | return NULL; | |
147 | } | |
148 | ||
149 | ||
150 | /* Code to turn a r_type into a howto ptr, uses the above howto table. | |
151 | Called after some initial checking by the tic4x_rtype_to_howto fn | |
152 | below. */ | |
153 | static void | |
154 | tic4x_lookup_howto (internal, dst) | |
155 | arelent *internal; | |
156 | struct internal_reloc *dst; | |
157 | { | |
158 | unsigned int i; | |
159 | int bank = (dst->r_symndx == -1) ? HOWTO_BANK : 0; | |
160 | ||
161 | for (i = 0; i < HOWTO_SIZE; i++) | |
162 | { | |
163 | if (tic4x_howto_table[i].type == dst->r_type) | |
164 | { | |
165 | internal->howto = tic4x_howto_table + i + bank; | |
166 | return; | |
167 | } | |
168 | } | |
169 | ||
170 | (*_bfd_error_handler) (_("Unrecognized reloc type 0x%x"), | |
171 | (unsigned int) dst->r_type); | |
172 | abort(); | |
173 | } | |
174 | ||
175 | #undef coff_rtype_to_howto | |
176 | #define coff_rtype_to_howto coff_tic4x_rtype_to_howto | |
177 | ||
178 | static reloc_howto_type * | |
179 | coff_tic4x_rtype_to_howto (abfd, sec, rel, h, sym, addendp) | |
180 | bfd *abfd ATTRIBUTE_UNUSED; | |
181 | asection *sec; | |
182 | struct internal_reloc *rel; | |
183 | struct coff_link_hash_entry *h ATTRIBUTE_UNUSED; | |
184 | struct internal_syment *sym ATTRIBUTE_UNUSED; | |
185 | bfd_vma *addendp; | |
186 | { | |
187 | arelent genrel; | |
188 | ||
189 | if (rel->r_symndx == -1 && addendp != NULL) | |
190 | /* This is a TI "internal relocation", which means that the relocation | |
191 | amount is the amount by which the current section is being relocated | |
192 | in the output section. */ | |
193 | *addendp = (sec->output_section->vma + sec->output_offset) - sec->vma; | |
194 | ||
195 | tic4x_lookup_howto (&genrel, rel); | |
196 | ||
197 | return genrel.howto; | |
198 | } | |
199 | ||
200 | ||
201 | static void | |
202 | tic4x_reloc_processing (relent, reloc, symbols, abfd, section) | |
203 | arelent *relent; | |
204 | struct internal_reloc *reloc; | |
205 | asymbol **symbols; | |
206 | bfd *abfd; | |
207 | asection *section; | |
208 | { | |
209 | asymbol *ptr; | |
210 | ||
211 | relent->address = reloc->r_vaddr; | |
b34976b6 | 212 | |
026df7c5 NC |
213 | if (reloc->r_symndx != -1) |
214 | { | |
215 | if (reloc->r_symndx < 0 || reloc->r_symndx >= obj_conv_table_size (abfd)) | |
216 | { | |
217 | (*_bfd_error_handler) | |
218 | (_("%s: warning: illegal symbol index %ld in relocs"), | |
219 | bfd_get_filename (abfd), reloc->r_symndx); | |
220 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
221 | ptr = NULL; | |
222 | } | |
223 | else | |
224 | { | |
225 | relent->sym_ptr_ptr = (symbols | |
226 | + obj_convert (abfd)[reloc->r_symndx]); | |
227 | ptr = *(relent->sym_ptr_ptr); | |
228 | } | |
229 | } | |
230 | else | |
231 | { | |
232 | relent->sym_ptr_ptr = section->symbol_ptr_ptr; | |
233 | ptr = *(relent->sym_ptr_ptr); | |
234 | } | |
b34976b6 | 235 | |
026df7c5 NC |
236 | /* The symbols definitions that we have read in have been relocated |
237 | as if their sections started at 0. But the offsets refering to | |
238 | the symbols in the raw data have not been modified, so we have to | |
239 | have a negative addend to compensate. | |
b34976b6 | 240 | |
026df7c5 | 241 | Note that symbols which used to be common must be left alone. */ |
b34976b6 | 242 | |
026df7c5 NC |
243 | /* Calculate any reloc addend by looking at the symbol. */ |
244 | CALC_ADDEND (abfd, ptr, *reloc, relent); | |
b34976b6 | 245 | |
026df7c5 NC |
246 | relent->address -= section->vma; |
247 | /* !! relent->section = (asection *) NULL; */ | |
b34976b6 | 248 | |
026df7c5 NC |
249 | /* Fill in the relent->howto field from reloc->r_type. */ |
250 | tic4x_lookup_howto (relent, reloc); | |
251 | } | |
252 | ||
253 | ||
026df7c5 | 254 | /* TI COFF v0, DOS tools (little-endian headers). */ |
3fa78519 | 255 | CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff0_vec, "coff0-tic4x", HAS_LOAD_PAGE, 0, '_', NULL, (PTR)&ticoff0_swap_table); |
026df7c5 NC |
256 | |
257 | /* TI COFF v0, SPARC tools (big-endian headers). */ | |
3fa78519 | 258 | CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff0_beh_vec, "coff0-beh-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff0_vec, (PTR)&ticoff0_swap_table); |
026df7c5 NC |
259 | |
260 | /* TI COFF v1, DOS tools (little-endian headers). */ | |
3fa78519 | 261 | CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff1_vec, "coff1-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff0_beh_vec, (PTR)&ticoff1_swap_table); |
026df7c5 NC |
262 | |
263 | /* TI COFF v1, SPARC tools (big-endian headers). */ | |
3fa78519 | 264 | CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff1_beh_vec, "coff1-beh-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff1_vec, (PTR)&ticoff1_swap_table); |
026df7c5 NC |
265 | |
266 | /* TI COFF v2, TI DOS tools output (little-endian headers). */ | |
3fa78519 | 267 | CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff2_vec, "coff2-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff1_beh_vec, COFF_SWAP_TABLE); |
026df7c5 NC |
268 | |
269 | /* TI COFF v2, TI SPARC tools output (big-endian headers). */ | |
3fa78519 | 270 | CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff2_beh_vec, "coff2-beh-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff2_vec, COFF_SWAP_TABLE); |