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3c8a3c56 JG |
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. | |
2013f9b4 | 4 | |
3c8a3c56 | 5 | This file is part of BFD, the Binary File Descriptor library. |
2013f9b4 | 6 | |
3c8a3c56 | 7 | This program is free software; you can redistribute it and/or modify |
2013f9b4 | 8 | it under the terms of the GNU General Public License as published by |
3c8a3c56 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
2013f9b4 | 11 | |
3c8a3c56 | 12 | This program is distributed in the hope that it will be useful, |
2013f9b4 SC |
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 | |
3c8a3c56 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
2013f9b4 SC |
20 | |
21 | /* $Id$ */ | |
22 | ||
23 | #define A29K 1 | |
24 | ||
2013f9b4 | 25 | #include "bfd.h" |
bbc8d484 | 26 | #include "sysdep.h" |
2013f9b4 SC |
27 | #include "libbfd.h" |
28 | #include "obstack.h" | |
c3eb25fc SC |
29 | #include "coff/a29k.h" |
30 | #include "coff/internal.h" | |
2013f9b4 SC |
31 | #include "libcoff.h" |
32 | ||
33 | #define INSERT_HWORD(WORD,HWORD) \ | |
c2ce0738 SC |
34 | (((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff)) |
35 | #define EXTRACT_HWORD(WORD) \ | |
36 | (((WORD) & 0x00ff0000) >> 8) | ((WORD)& 0xff) | |
37 | #define SIGN_EXTEND_HWORD(HWORD) \ | |
38 | ((HWORD) & 0x8000 ? (HWORD)|0xffff0000 : (HWORD)) | |
2013f9b4 SC |
39 | |
40 | /* Provided the symbol, returns the value reffed */ | |
41 | static long | |
42 | get_symbol_value(symbol) | |
43 | asymbol *symbol; | |
44 | { | |
45 | long relocation = 0; | |
46 | ||
47 | if (symbol != (asymbol *)NULL) { | |
e98e6ec1 SC |
48 | if (symbol->section == &bfd_com_section) |
49 | { | |
50 | ||
2013f9b4 SC |
51 | relocation = 0; |
52 | } else { | |
53 | relocation = symbol->value; | |
54 | } | |
55 | if (symbol->section != (asection *)NULL) { | |
56 | relocation += symbol->section->output_section->vma + | |
57 | symbol->section->output_offset; | |
58 | } | |
59 | } | |
60 | return(relocation); | |
61 | } | |
62 | ||
c2ce0738 SC |
63 | /* this function is in charge of performing all the 29k relocations */ |
64 | ||
9e2dad8e | 65 | static bfd_reloc_status_type |
c2ce0738 SC |
66 | DEFUN(a29k_reloc,(abfd, reloc_entry, symbol_in, data, input_section), |
67 | bfd *abfd AND | |
68 | arelent *reloc_entry AND | |
69 | asymbol *symbol_in AND | |
8b87cbae | 70 | PTR data AND |
c2ce0738 | 71 | asection *input_section) |
2013f9b4 | 72 | { |
c2ce0738 SC |
73 | /* the consth relocation comes in two parts, we have to remember |
74 | the state between calls, in these variables */ | |
75 | static boolean part1_consth_active = false; | |
f58809fd | 76 | static unsigned long part1_consth_value; |
c2ce0738 SC |
77 | |
78 | unsigned long insn; | |
79 | unsigned long sym_value; | |
80 | unsigned long unsigned_value; | |
f58809fd | 81 | unsigned short r_type; |
c2ce0738 SC |
82 | long signed_value; |
83 | ||
2013f9b4 | 84 | |
f58809fd SC |
85 | r_type = reloc_entry->howto->type; |
86 | ||
87 | /* FIXME: Do we need to check for partial linking here */ | |
e98e6ec1 | 88 | if (symbol_in && (symbol_in->section == &bfd_und_section)) |
c2ce0738 | 89 | { |
f58809fd | 90 | /* Keep the state machine happy in case we're called again */ |
c2ce0738 SC |
91 | if (r_type == R_IHIHALF) |
92 | { | |
93 | part1_consth_active = true; | |
f58809fd | 94 | part1_consth_value = 0; |
2013f9b4 | 95 | } |
f58809fd SC |
96 | return(bfd_reloc_undefined); |
97 | } | |
98 | ||
c2ce0738 SC |
99 | if ((part1_consth_active) && (r_type != R_IHCONST)) |
100 | { | |
f58809fd SC |
101 | fprintf(stderr,"Relocation problem : "); |
102 | fprintf(stderr,"Missing IHCONST in module %s\n",abfd->filename); | |
c2ce0738 | 103 | part1_consth_active = false; |
f58809fd SC |
104 | return(bfd_reloc_dangerous); |
105 | } | |
106 | ||
c86190dd | 107 | insn = bfd_get_32(abfd, (bfd_byte *)data + reloc_entry->address); |
f58809fd SC |
108 | sym_value = get_symbol_value(symbol_in); |
109 | ||
c2ce0738 SC |
110 | switch (r_type) |
111 | { | |
112 | case R_IREL: | |
113 | /* Take the value in the field and sign extend it */ | |
114 | signed_value = EXTRACT_HWORD(insn) << 2; | |
115 | signed_value = SIGN_EXTEND_HWORD(signed_value); | |
116 | signed_value += sym_value + reloc_entry->addend; | |
117 | if ((signed_value&~0x3ffff) == 0) | |
118 | { /* Absolute jmp/call */ | |
119 | insn |= (1<<24); /* Make it absolute */ | |
f58809fd | 120 | /* FIXME: Should we change r_type to R_IABS */ |
c2ce0738 SC |
121 | signed_value /= 2; |
122 | } | |
123 | else | |
124 | { | |
f58809fd SC |
125 | /* Relative jmp/call, so subtract from the value the |
126 | address of the place we're coming from */ | |
c2ce0738 | 127 | signed_value -= reloc_entry->address + |
f58809fd SC |
128 | input_section->output_section->vma + |
129 | input_section->output_offset; | |
c2ce0738 SC |
130 | if (signed_value>0x1ffff || signed_value<-0x20000) |
131 | return(bfd_reloc_outofrange); | |
132 | ||
133 | signed_value /= 2; | |
2013f9b4 | 134 | } |
c2ce0738 | 135 | insn = INSERT_HWORD(insn, signed_value); |
f58809fd | 136 | break; |
c2ce0738 SC |
137 | case R_ILOHALF: |
138 | unsigned_value = EXTRACT_HWORD(insn); | |
139 | unsigned_value += sym_value + reloc_entry->addend; | |
140 | insn = INSERT_HWORD(insn, unsigned_value); | |
f58809fd | 141 | break; |
c2ce0738 SC |
142 | case R_IHIHALF: |
143 | /* consth, part 1 | |
144 | Just get the symbol value that is referenced */ | |
145 | part1_consth_active = true; | |
f58809fd | 146 | part1_consth_value = sym_value + reloc_entry->addend; |
c2ce0738 SC |
147 | /* Don't modify insn until R_IHCONST */ |
148 | return(bfd_reloc_ok); | |
f58809fd | 149 | break; |
c2ce0738 SC |
150 | case R_IHCONST: |
151 | /* consth, part 2 | |
152 | Now relocate the reference */ | |
153 | if (part1_consth_active == false) { | |
f58809fd SC |
154 | fprintf(stderr,"Relocation problem : "); |
155 | fprintf(stderr,"IHIHALF missing in module %s\n", | |
156 | abfd->filename); | |
f58809fd | 157 | return(bfd_reloc_dangerous); |
2013f9b4 | 158 | } |
f58809fd | 159 | /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */ |
c2ce0738 SC |
160 | unsigned_value = 0; /*EXTRACT_HWORD(insn) << 16;*/ |
161 | unsigned_value += reloc_entry->addend; /* r_symndx */ | |
162 | unsigned_value += part1_consth_value; | |
163 | unsigned_value = unsigned_value >> 16; | |
164 | insn = INSERT_HWORD(insn, unsigned_value); | |
165 | part1_consth_active = false; | |
f58809fd | 166 | break; |
c2ce0738 SC |
167 | case R_BYTE: |
168 | unsigned_value = (insn >> 24) + sym_value + reloc_entry->addend; | |
169 | if (unsigned_value & 0xffffff00) { | |
f58809fd SC |
170 | fprintf(stderr,"Relocation problem : "); |
171 | fprintf(stderr,"byte value too large in module %s\n", | |
172 | abfd->filename); | |
173 | return(bfd_reloc_overflow); | |
174 | } | |
c2ce0738 | 175 | insn = (insn & 0x00ffffff) | (unsigned_value << 24); |
f58809fd | 176 | break; |
c2ce0738 SC |
177 | case R_HWORD: |
178 | unsigned_value = (insn >> 16) + sym_value + reloc_entry->addend; | |
179 | if (unsigned_value & 0xffff0000) { | |
f58809fd SC |
180 | fprintf(stderr,"Relocation problem : "); |
181 | fprintf(stderr,"hword value too large in module %s\n", | |
182 | abfd->filename); | |
183 | return(bfd_reloc_overflow); | |
184 | } | |
c2ce0738 | 185 | insn = (insn & 0x0000ffff) | (unsigned_value<<16); |
f58809fd | 186 | break; |
c2ce0738 | 187 | case R_WORD: |
f58809fd SC |
188 | insn += sym_value + reloc_entry->addend; |
189 | break; | |
c2ce0738 | 190 | default: |
f58809fd SC |
191 | fprintf(stderr,"Relocation problem : "); |
192 | fprintf(stderr,"Unrecognized reloc type %d, in module %s\n", | |
193 | r_type,abfd->filename); | |
194 | return (bfd_reloc_dangerous); | |
195 | } | |
196 | ||
c86190dd | 197 | bfd_put_32(abfd, insn, (bfd_byte *)data + reloc_entry->address); |
f58809fd | 198 | return(bfd_reloc_ok); |
2013f9b4 SC |
199 | } |
200 | ||
201 | /* type rightshift | |
202 | size | |
203 | bitsize | |
204 | pc-relative | |
205 | bitpos | |
206 | absolute | |
207 | complain_on_overflow | |
208 | special_function | |
209 | relocation name | |
210 | partial_inplace | |
211 | src_mask | |
212 | */ | |
213 | ||
214 | /*FIXME: I'm not real sure about this table */ | |
215 | #define NA 0 /* Obsolete fields, via the documentation */ | |
21a7f8b6 | 216 | #define NAB false |
2013f9b4 SC |
217 | static reloc_howto_type howto_table[] = |
218 | { | |
21a7f8b6 | 219 | {R_ABS, 0, 3, NA, false, NA, NAB, true,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false}, |
2013f9b4 SC |
220 | {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10}, |
221 | {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20}, | |
222 | {21}, {22}, {23}, | |
21a7f8b6 SC |
223 | {R_IREL, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false}, |
224 | {R_IABS, 0, 3, NA, false, NA, NAB, true,a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false}, | |
225 | {R_ILOHALF, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false}, | |
226 | {R_IHIHALF, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false}, | |
227 | {R_IHCONST, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false}, | |
228 | {R_BYTE, 0, 0, NA, false, NA, NAB, true,a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false}, | |
229 | {R_HWORD, 0, 1, NA, false, NA, NAB, true,a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false}, | |
230 | {R_WORD, 0, 2, NA, false, NA, NAB, true,a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false}, | |
2013f9b4 SC |
231 | }; |
232 | #undef NA | |
233 | ||
234 | #define BADMAG(x) A29KBADMAG(x) | |
235 | ||
6cba8f4b SC |
236 | #define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \ |
237 | reloc_processing(relent, reloc, symbols, abfd, section) | |
238 | ||
e98e6ec1 | 239 | static void DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) , |
6cba8f4b SC |
240 | arelent *relent AND |
241 | struct internal_reloc *reloc AND | |
242 | asymbol **symbols AND | |
243 | bfd *abfd AND | |
244 | asection *section) | |
245 | { | |
246 | relent->address = reloc->r_vaddr; | |
247 | relent->howto = howto_table + reloc->r_type; | |
248 | if (reloc->r_type == R_IHCONST) | |
249 | { | |
250 | relent->addend = reloc->r_symndx; | |
b772312e | 251 | relent->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr; |
6cba8f4b SC |
252 | } |
253 | else | |
254 | { | |
255 | asymbol *ptr; | |
256 | relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx]; | |
257 | ||
258 | ptr = *(relent->sym_ptr_ptr); | |
259 | ||
260 | if (ptr | |
261 | && ptr->the_bfd == abfd | |
262 | && ptr->section != (asection *) NULL | |
263 | && ((ptr->flags & BSF_OLD_COMMON)== 0)) | |
264 | { | |
265 | relent->addend = -(ptr->section->vma + ptr->value); | |
266 | } | |
267 | else | |
268 | { | |
269 | relent->addend = 0; | |
270 | } | |
271 | relent->address-= section->vma; | |
e98e6ec1 | 272 | /* relent->section = 0;*/ |
6cba8f4b SC |
273 | } |
274 | } | |
3b4f1a5d | 275 | |
2013f9b4 SC |
276 | #include "coffcode.h" |
277 | ||
278 | bfd_target a29kcoff_big_vec = | |
279 | { | |
c2ce0738 SC |
280 | "coff-a29k-big", /* name */ |
281 | bfd_target_coff_flavour, | |
282 | true, /* data byte order is big */ | |
283 | true, /* header byte order is big */ | |
284 | ||
285 | (HAS_RELOC | EXEC_P | /* object flags */ | |
286 | HAS_LINENO | HAS_DEBUG | | |
287 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT), | |
288 | ||
289 | (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */ | |
290 | | SEC_LOAD | SEC_RELOC | |
291 | | SEC_READONLY ), | |
292 | '/', /* ar_pad_char */ | |
293 | 15, /* ar_max_namelen */ | |
294 | 2, /* minimum section alignment */ | |
295 | /* data */ | |
296 | _do_getb64, _do_putb64, _do_getb32, | |
297 | _do_putb32, _do_getb16, _do_putb16, | |
298 | /* hdrs */ | |
299 | _do_getb64, _do_putb64, _do_getb32, | |
300 | _do_putb32, _do_getb16, _do_putb16, | |
301 | ||
302 | { | |
303 | ||
304 | _bfd_dummy_target, | |
305 | coff_object_p, | |
306 | bfd_generic_archive_p, | |
307 | _bfd_dummy_target | |
308 | }, | |
309 | { | |
310 | bfd_false, | |
311 | coff_mkobject, | |
312 | _bfd_generic_mkarchive, | |
313 | bfd_false | |
314 | }, | |
315 | { | |
316 | bfd_false, | |
317 | coff_write_object_contents, | |
318 | _bfd_write_archive_contents, | |
319 | bfd_false | |
320 | }, | |
321 | ||
322 | JUMP_TABLE(coff), | |
323 | COFF_SWAP_TABLE | |
324 | }; | |
2013f9b4 | 325 |