merge from gcc
[binutils.git] / bfd / coff-tic4x.c
blob1e95411e9e62c765f1acb5bfbbdb18c1c21dac11
1 /* BFD back-end for TMS320C4X coff binaries.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2005
3 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 2 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
22 02110-1301, USA. */
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"
32 #undef F_LSYMS
33 #define F_LSYMS F_LSYMS_TICOFF
35 static bfd_boolean ticoff_bfd_is_local_label_name
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 * ));
49 /* Replace the stock _bfd_coff_is_local_label_name to recognize TI COFF local
50 labels. */
51 static bfd_boolean
52 ticoff_bfd_is_local_label_name (abfd, name)
53 bfd *abfd ATTRIBUTE_UNUSED;
54 const char *name;
56 if (TICOFF_LOCAL_LABEL_P(name))
57 return TRUE;
58 return FALSE;
61 #define coff_bfd_is_local_label_name ticoff_bfd_is_local_label_name
63 #define RELOC_PROCESSING(RELENT,RELOC,SYMS,ABFD,SECT)\
64 tic4x_reloc_processing (RELENT,RELOC,SYMS,ABFD,SECT)
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)
72 #undef coff_rtype_to_howto
73 #define coff_rtype_to_howto coff_tic4x_rtype_to_howto
75 #include "coffcode.h"
77 static bfd_reloc_status_type
78 tic4x_relocation (abfd, reloc_entry, symbol, data, input_section,
79 output_bfd, error_message)
80 bfd *abfd ATTRIBUTE_UNUSED;
81 arelent *reloc_entry;
82 asymbol *symbol ATTRIBUTE_UNUSED;
83 PTR data ATTRIBUTE_UNUSED;
84 asection *input_section;
85 bfd *output_bfd;
86 char **error_message ATTRIBUTE_UNUSED;
88 if (output_bfd != (bfd *) NULL)
90 /* This is a partial relocation, and we want to apply the
91 relocation to the reloc entry rather than the raw data.
92 Modify the reloc inplace to reflect what we now know. */
93 reloc_entry->address += input_section->output_offset;
94 return bfd_reloc_ok;
96 return bfd_reloc_continue;
99 reloc_howto_type tic4x_howto_table[] =
101 HOWTO(R_RELWORD, 0, 2, 16, FALSE, 0, complain_overflow_signed, tic4x_relocation, "RELWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
102 HOWTO(R_REL24, 0, 2, 24, FALSE, 0, complain_overflow_bitfield, tic4x_relocation, "REL24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
103 HOWTO(R_RELLONG, 0, 2, 32, FALSE, 0, complain_overflow_dont, tic4x_relocation, "RELLONG", TRUE, 0xffffffff, 0xffffffff, FALSE),
104 HOWTO(R_PCRWORD, 0, 2, 16, TRUE, 0, complain_overflow_signed, tic4x_relocation, "PCRWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
105 HOWTO(R_PCR24, 0, 2, 24, TRUE, 0, complain_overflow_signed, tic4x_relocation, "PCR24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
106 HOWTO(R_PARTLS16, 0, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "PARTLS16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
107 HOWTO(R_PARTMS8, 16, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "PARTMS8", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
108 HOWTO(R_RELWORD, 0, 2, 16, FALSE, 0, complain_overflow_signed, tic4x_relocation, "ARELWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
109 HOWTO(R_REL24, 0, 2, 24, FALSE, 0, complain_overflow_signed, tic4x_relocation, "AREL24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
110 HOWTO(R_RELLONG, 0, 2, 32, FALSE, 0, complain_overflow_signed, tic4x_relocation, "ARELLONG", TRUE, 0xffffffff, 0xffffffff, FALSE),
111 HOWTO(R_PCRWORD, 0, 2, 16, TRUE, 0, complain_overflow_signed, tic4x_relocation, "APCRWORD", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
112 HOWTO(R_PCR24, 0, 2, 24, TRUE, 0, complain_overflow_signed, tic4x_relocation, "APCR24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
113 HOWTO(R_PARTLS16, 0, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "APARTLS16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
114 HOWTO(R_PARTMS8, 16, 2, 16, FALSE, 0, complain_overflow_dont, tic4x_relocation, "APARTMS8", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
116 #define HOWTO_SIZE (sizeof(tic4x_howto_table) / sizeof(tic4x_howto_table[0]))
118 #undef coff_bfd_reloc_type_lookup
119 #define coff_bfd_reloc_type_lookup tic4x_coff_reloc_type_lookup
121 /* For the case statement use the code values used tc_gen_reloc (defined in
122 bfd/reloc.c) to map to the howto table entries. */
124 static reloc_howto_type *
125 tic4x_coff_reloc_type_lookup (abfd, code)
126 bfd *abfd ATTRIBUTE_UNUSED;
127 bfd_reloc_code_real_type code;
129 unsigned int type;
130 unsigned int i;
132 switch (code)
134 case BFD_RELOC_32: type = R_RELLONG; break;
135 case BFD_RELOC_24: type = R_REL24; break;
136 case BFD_RELOC_16: type = R_RELWORD; break;
137 case BFD_RELOC_24_PCREL: type = R_PCR24; break;
138 case BFD_RELOC_16_PCREL: type = R_PCRWORD; break;
139 case BFD_RELOC_HI16: type = R_PARTMS8; break;
140 case BFD_RELOC_LO16: type = R_PARTLS16; break;
141 default:
142 return NULL;
145 for (i = 0; i < HOWTO_SIZE; i++)
147 if (tic4x_howto_table[i].type == type)
148 return tic4x_howto_table + i;
150 return NULL;
154 /* Code to turn a r_type into a howto ptr, uses the above howto table.
155 Called after some initial checking by the tic4x_rtype_to_howto fn
156 below. */
157 static void
158 tic4x_lookup_howto (internal, dst)
159 arelent *internal;
160 struct internal_reloc *dst;
162 unsigned int i;
163 int bank = (dst->r_symndx == -1) ? HOWTO_BANK : 0;
165 for (i = 0; i < HOWTO_SIZE; i++)
167 if (tic4x_howto_table[i].type == dst->r_type)
169 internal->howto = tic4x_howto_table + i + bank;
170 return;
174 (*_bfd_error_handler) (_("Unrecognized reloc type 0x%x"),
175 (unsigned int) dst->r_type);
176 abort();
179 static reloc_howto_type *
180 coff_tic4x_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
181 bfd *abfd ATTRIBUTE_UNUSED;
182 asection *sec;
183 struct internal_reloc *rel;
184 struct coff_link_hash_entry *h ATTRIBUTE_UNUSED;
185 struct internal_syment *sym ATTRIBUTE_UNUSED;
186 bfd_vma *addendp;
188 arelent genrel;
190 if (rel->r_symndx == -1 && addendp != NULL)
191 /* This is a TI "internal relocation", which means that the relocation
192 amount is the amount by which the current section is being relocated
193 in the output section. */
194 *addendp = (sec->output_section->vma + sec->output_offset) - sec->vma;
196 tic4x_lookup_howto (&genrel, rel);
198 return genrel.howto;
202 static void
203 tic4x_reloc_processing (relent, reloc, symbols, abfd, section)
204 arelent *relent;
205 struct internal_reloc *reloc;
206 asymbol **symbols;
207 bfd *abfd;
208 asection *section;
210 asymbol *ptr;
212 relent->address = reloc->r_vaddr;
214 if (reloc->r_symndx != -1)
216 if (reloc->r_symndx < 0 || reloc->r_symndx >= obj_conv_table_size (abfd))
218 (*_bfd_error_handler)
219 (_("%s: warning: illegal symbol index %ld in relocs"),
220 bfd_get_filename (abfd), reloc->r_symndx);
221 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
222 ptr = NULL;
224 else
226 relent->sym_ptr_ptr = (symbols
227 + obj_convert (abfd)[reloc->r_symndx]);
228 ptr = *(relent->sym_ptr_ptr);
231 else
233 relent->sym_ptr_ptr = section->symbol_ptr_ptr;
234 ptr = *(relent->sym_ptr_ptr);
237 /* The symbols definitions that we have read in have been relocated
238 as if their sections started at 0. But the offsets refering to
239 the symbols in the raw data have not been modified, so we have to
240 have a negative addend to compensate.
242 Note that symbols which used to be common must be left alone. */
244 /* Calculate any reloc addend by looking at the symbol. */
245 CALC_ADDEND (abfd, ptr, *reloc, relent);
247 relent->address -= section->vma;
248 /* !! relent->section = (asection *) NULL; */
250 /* Fill in the relent->howto field from reloc->r_type. */
251 tic4x_lookup_howto (relent, reloc);
255 /* TI COFF v0, DOS tools (little-endian headers). */
256 CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff0_vec, "coff0-tic4x", HAS_LOAD_PAGE, 0, '_', NULL, (PTR)&ticoff0_swap_table);
258 /* TI COFF v0, SPARC tools (big-endian headers). */
259 CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff0_beh_vec, "coff0-beh-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff0_vec, (PTR)&ticoff0_swap_table);
261 /* TI COFF v1, DOS tools (little-endian headers). */
262 CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff1_vec, "coff1-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff0_beh_vec, (PTR)&ticoff1_swap_table);
264 /* TI COFF v1, SPARC tools (big-endian headers). */
265 CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff1_beh_vec, "coff1-beh-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff1_vec, (PTR)&ticoff1_swap_table);
267 /* TI COFF v2, TI DOS tools output (little-endian headers). */
268 CREATE_LITTLE_COFF_TARGET_VEC(tic4x_coff2_vec, "coff2-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff1_beh_vec, COFF_SWAP_TABLE);
270 /* TI COFF v2, TI SPARC tools output (big-endian headers). */
271 CREATE_BIGHDR_COFF_TARGET_VEC(tic4x_coff2_beh_vec, "coff2-beh-tic4x", HAS_LOAD_PAGE, 0, '_', &tic4x_coff2_vec, COFF_SWAP_TABLE);