* targets.c (proto write_armap). Changed orl_count to unsigned.
[binutils-gdb.git] / bfd / coff-a29k.c
1 /* AMD 29000 COFF back-end for BFD.
2 Copyright (C) 1990-1991 Free Software Foundation, Inc.
3 Contributed by David Wood at New York University 7/8/91.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
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.
11
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.
16
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
20
21 /* $Id$ */
22
23 #define A29K 1
24
25 #include "bfd.h"
26 #include "sysdep.h"
27 #include "libbfd.h"
28 #include "obstack.h"
29 #include "amdcoff.h"
30 #include "internalcoff.h"
31 #include "libcoff.h"
32
33 #define INSERT_HWORD(WORD,HWORD) \
34 (((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff))
35 #define EXTRACT_HWORD(WORD) (((WORD) & 0x00ff0000) >> 8) | ((WORD) & 0xff)
36
37 /* Provided the symbol, returns the value reffed */
38 static long
39 get_symbol_value(symbol)
40 asymbol *symbol;
41 {
42 long relocation = 0;
43
44 if (symbol != (asymbol *)NULL) {
45 if (symbol->flags & BSF_FORT_COMM) {
46 relocation = 0;
47 } else {
48 relocation = symbol->value;
49 }
50 if (symbol->section != (asection *)NULL) {
51 relocation += symbol->section->output_section->vma +
52 symbol->section->output_offset;
53 }
54 }
55 return(relocation);
56 }
57
58 static bfd_reloc_status_type
59 a29k_reloc(abfd, reloc_entry, symbol_in, data, input_section)
60 bfd *abfd;
61 arelent *reloc_entry;
62 asymbol *symbol_in;
63 unsigned char *data;
64 asection *input_section;
65 {
66 static unsigned long part1_consth_active=0;
67 static unsigned long part1_consth_value;
68 unsigned long insn, value, sym_value;
69 unsigned short r_type;
70 /* bfd_reloc_status_type result;*/
71 /* coff_symbol_type *cs = coffsymbol(symbol_in);*/
72
73 r_type = reloc_entry->howto->type;
74
75 /* FIXME: Do we need to check for partial linking here */
76 if (symbol_in && (symbol_in->flags & BSF_UNDEFINED)) {
77 /* Keep the state machine happy in case we're called again */
78 if (r_type == R_IHIHALF) {
79 part1_consth_active = 1;
80 part1_consth_value = 0;
81 }
82 return(bfd_reloc_undefined);
83 }
84
85 if ((part1_consth_active) && (r_type != R_IHCONST)) {
86 fprintf(stderr,"Relocation problem : ");
87 fprintf(stderr,"Missing IHCONST in module %s\n",abfd->filename);
88 part1_consth_active = 0;
89 return(bfd_reloc_dangerous);
90 }
91
92 insn = bfd_get_32(abfd, data + reloc_entry->address);
93 sym_value = get_symbol_value(symbol_in);
94
95 switch (r_type) {
96 case R_IREL:
97 /* We don't want to use the value already in the offset..
98 The field isn't big enought to hold the full range of values.
99 Will the break anything ? Steve@cygnus */
100 value = 0; /*EXTRACT_HWORD(insn) << 2;*/
101 value += sym_value + reloc_entry->addend;
102 if (0 && value <= 0x3ffff) { /* Absolute jmp/call */
103 insn |= 0x01000000; /* Make it absolute */
104 /* FIXME: Should we change r_type to R_IABS */
105 } else {
106 /* Relative jmp/call, so subtract from the value the
107 address of the place we're coming from */
108 value -= reloc_entry->address +
109 input_section->output_section->vma +
110 input_section->output_offset;
111 if (value > 0x3ffff) {
112 fprintf(stderr,"Relocation problem : ");
113 fprintf(stderr,"Jmp/call too far; to %s from %s\n",
114 symbol_in->name,abfd->filename);
115 return(bfd_reloc_outofrange);
116 }
117 }
118 value >>= 2;
119 insn = INSERT_HWORD(insn,value);
120 break;
121 case R_ILOHALF:
122 value = EXTRACT_HWORD(insn);
123 value += sym_value + reloc_entry->addend;
124 insn = INSERT_HWORD(insn,value);
125 break;
126 case R_IHIHALF: /* consth, part 1 */
127 /* Just get the symbol value that is referenced */
128 part1_consth_active = 1;
129 part1_consth_value = sym_value + reloc_entry->addend;
130 return(bfd_reloc_ok); /* Don't modify insn until R_IHCONST */
131 break;
132 case R_IHCONST: /* consth, part 2 */
133 /* Now relocate the reference */
134 if (!part1_consth_active) {
135 fprintf(stderr,"Relocation problem : ");
136 fprintf(stderr,"IHIHALF missing in module %s\n",
137 abfd->filename);
138 part1_consth_active = 0;
139 return(bfd_reloc_dangerous);
140 }
141 /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
142 value = (unsigned int)reloc_entry->addend; /* r_symndx */
143 value += part1_consth_value;
144 value >>= 16;
145 insn = INSERT_HWORD(insn,value);
146 part1_consth_active = 0;
147 break;
148 case R_BYTE:
149 value = (insn >> 24) + sym_value + reloc_entry->addend;
150 if (value & 0xffffff00) {
151 fprintf(stderr,"Relocation problem : ");
152 fprintf(stderr,"byte value too large in module %s\n",
153 abfd->filename);
154 return(bfd_reloc_overflow);
155 }
156 insn = (insn & 0x00ffffff) | (value << 24);
157 break;
158 case R_HWORD:
159 value = (insn >> 16) + sym_value + reloc_entry->addend;
160 if (value & 0xffff0000) {
161 fprintf(stderr,"Relocation problem : ");
162 fprintf(stderr,"hword value too large in module %s\n",
163 abfd->filename);
164 return(bfd_reloc_overflow);
165 }
166 insn = (insn & 0x0000ffff) | (value<<16);
167 break;
168 case R_WORD:
169 insn += sym_value + reloc_entry->addend;
170 break;
171 default:
172 fprintf(stderr,"Relocation problem : ");
173 fprintf(stderr,"Unrecognized reloc type %d, in module %s\n",
174 r_type,abfd->filename);
175 return (bfd_reloc_dangerous);
176 }
177
178 bfd_put_32(abfd, insn, data+reloc_entry->address);
179 return(bfd_reloc_ok);
180 }
181
182 /* type rightshift
183 size
184 bitsize
185 pc-relative
186 bitpos
187 absolute
188 complain_on_overflow
189 special_function
190 relocation name
191 partial_inplace
192 src_mask
193 */
194
195 /*FIXME: I'm not real sure about this table */
196 #define NA 0 /* Obsolete fields, via the documentation */
197 static reloc_howto_type howto_table[] =
198 {
199 {R_ABS, 0, 3, NA, false, NA, NA, true,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false},
200 {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10},
201 {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20},
202 {21}, {22}, {23},
203 {R_IREL, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false},
204 {R_IABS, 0, 3, NA, false, NA, NA, true,a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false},
205 {R_ILOHALF, 0, 3, NA, true, NA, NA, true,a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false},
206 {R_IHIHALF, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false},
207 {R_IHCONST, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false},
208 {R_BYTE, 0, 0, NA, false, NA, NA, true,a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false},
209 {R_HWORD, 0, 1, NA, false, NA, NA, true,a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false},
210 {R_WORD, 0, 2, NA, false, NA, NA, true,a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false},
211 };
212 #undef NA
213
214 #define BADMAG(x) A29KBADMAG(x)
215
216 #include "coffcode.h"
217
218 bfd_target a29kcoff_big_vec =
219 {
220 "coff-a29k-big", /* name */
221 bfd_target_coff_flavour,
222 true, /* data byte order is big */
223 true, /* header byte order is big */
224
225 (HAS_RELOC | EXEC_P | /* object flags */
226 HAS_LINENO | HAS_DEBUG |
227 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
228
229 (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */
230 | SEC_LOAD | SEC_RELOC
231 | SEC_READONLY ),
232 '/', /* ar_pad_char */
233 15, /* ar_max_namelen */
234
235 3, /* minimum section alignment */
236 _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
237 _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
238
239
240 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
241 bfd_generic_archive_p, _bfd_dummy_target},
242 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
243 bfd_false},
244 {bfd_false, coff_write_object_contents, /* bfd_write_contents */
245 _bfd_write_archive_contents, bfd_false},
246
247 JUMP_TABLE(coff),
248 COFF_SWAP_TABLE
249 };
250