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4a8db330 JG |
1 | /* BFD back-end for AMD 29000 COFF binaries. |
2 | Copyright 1990, 1991, 1992 Free Software Foundation, Inc. | |
3c8a3c56 | 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 | 20 | |
2013f9b4 SC |
21 | #define A29K 1 |
22 | ||
2013f9b4 | 23 | #include "bfd.h" |
bbc8d484 | 24 | #include "sysdep.h" |
2013f9b4 SC |
25 | #include "libbfd.h" |
26 | #include "obstack.h" | |
c3eb25fc SC |
27 | #include "coff/a29k.h" |
28 | #include "coff/internal.h" | |
2013f9b4 SC |
29 | #include "libcoff.h" |
30 | ||
31 | #define INSERT_HWORD(WORD,HWORD) \ | |
c2ce0738 SC |
32 | (((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff)) |
33 | #define EXTRACT_HWORD(WORD) \ | |
34 | (((WORD) & 0x00ff0000) >> 8) | ((WORD)& 0xff) | |
35 | #define SIGN_EXTEND_HWORD(HWORD) \ | |
36 | ((HWORD) & 0x8000 ? (HWORD)|0xffff0000 : (HWORD)) | |
2013f9b4 SC |
37 | |
38 | /* Provided the symbol, returns the value reffed */ | |
39 | static long | |
40 | get_symbol_value(symbol) | |
41 | asymbol *symbol; | |
42 | { | |
43 | long relocation = 0; | |
44 | ||
859f11ff SC |
45 | if (symbol->section == &bfd_com_section) |
46 | { | |
47 | relocation = 0; | |
2013f9b4 | 48 | } |
859f11ff SC |
49 | else |
50 | { | |
51 | relocation = symbol->value + | |
52 | symbol->section->output_section->vma + | |
53 | symbol->section->output_offset; | |
54 | } | |
55 | ||
2013f9b4 SC |
56 | return(relocation); |
57 | } | |
58 | ||
c2ce0738 SC |
59 | /* this function is in charge of performing all the 29k relocations */ |
60 | ||
9e2dad8e | 61 | static bfd_reloc_status_type |
2cfd0562 | 62 | DEFUN(a29k_reloc,(abfd, reloc_entry, symbol_in, data, input_section, output_bfd), |
c2ce0738 SC |
63 | bfd *abfd AND |
64 | arelent *reloc_entry AND | |
65 | asymbol *symbol_in AND | |
8b87cbae | 66 | PTR data AND |
2cfd0562 SC |
67 | asection *input_section AND |
68 | bfd *output_bfd) | |
2013f9b4 | 69 | { |
859f11ff SC |
70 | /* the consth relocation comes in two parts, we have to remember |
71 | the state between calls, in these variables */ | |
72 | static boolean part1_consth_active = false; | |
73 | static unsigned long part1_consth_value; | |
c2ce0738 | 74 | |
859f11ff SC |
75 | unsigned long insn; |
76 | unsigned long sym_value; | |
77 | unsigned long unsigned_value; | |
78 | unsigned short r_type; | |
79 | long signed_value; | |
c2ce0738 | 80 | |
2cfd0562 | 81 | unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/ |
859f11ff | 82 | bfd_byte *hit_data =addr + (bfd_byte *)(data); |
2013f9b4 | 83 | |
859f11ff | 84 | r_type = reloc_entry->howto->type; |
f58809fd | 85 | |
2cfd0562 SC |
86 | if (output_bfd) { |
87 | /* Partial linking - do nothing */ | |
88 | reloc_entry->address += input_section->output_offset; | |
89 | return bfd_reloc_ok; | |
90 | ||
91 | } | |
92 | ||
859f11ff SC |
93 | if (symbol_in && (symbol_in->section == &bfd_und_section)) |
94 | { | |
95 | /* Keep the state machine happy in case we're called again */ | |
96 | if (r_type == R_IHIHALF) | |
c2ce0738 | 97 | { |
859f11ff SC |
98 | part1_consth_active = true; |
99 | part1_consth_value = 0; | |
f58809fd | 100 | } |
859f11ff SC |
101 | return(bfd_reloc_undefined); |
102 | } | |
f58809fd | 103 | |
859f11ff SC |
104 | if ((part1_consth_active) && (r_type != R_IHCONST)) |
105 | { | |
106 | fprintf(stderr,"Relocation problem : "); | |
107 | fprintf(stderr,"Missing IHCONST in module %s\n",abfd->filename); | |
108 | part1_consth_active = false; | |
109 | return(bfd_reloc_dangerous); | |
110 | } | |
f58809fd | 111 | |
f58809fd | 112 | |
859f11ff SC |
113 | sym_value = get_symbol_value(symbol_in); |
114 | ||
115 | switch (r_type) | |
116 | { | |
117 | case R_IREL: | |
118 | insn = bfd_get_32(abfd, hit_data); | |
119 | /* Take the value in the field and sign extend it */ | |
120 | signed_value = EXTRACT_HWORD(insn) << 2; | |
121 | signed_value = SIGN_EXTEND_HWORD(signed_value); | |
122 | signed_value += sym_value + reloc_entry->addend; | |
123 | if ((signed_value&~0x3ffff) == 0) | |
124 | { /* Absolute jmp/call */ | |
125 | insn |= (1<<24); /* Make it absolute */ | |
126 | /* FIXME: Should we change r_type to R_IABS */ | |
859f11ff SC |
127 | } |
128 | else | |
c2ce0738 | 129 | { |
859f11ff SC |
130 | /* Relative jmp/call, so subtract from the value the |
131 | address of the place we're coming from */ | |
132 | signed_value -= reloc_entry->address + | |
133 | input_section->output_section->vma + | |
134 | input_section->output_offset; | |
135 | if (signed_value>0x1ffff || signed_value<-0x20000) | |
136 | return(bfd_reloc_outofrange); | |
859f11ff | 137 | } |
bbbd93b8 | 138 | signed_value >>= 2; |
859f11ff SC |
139 | insn = INSERT_HWORD(insn, signed_value); |
140 | bfd_put_32(abfd, insn ,hit_data); | |
141 | break; | |
142 | case R_ILOHALF: | |
143 | insn = bfd_get_32(abfd, hit_data); | |
144 | unsigned_value = EXTRACT_HWORD(insn); | |
145 | unsigned_value += sym_value + reloc_entry->addend; | |
146 | insn = INSERT_HWORD(insn, unsigned_value); | |
147 | bfd_put_32(abfd, insn, hit_data); | |
148 | break; | |
149 | case R_IHIHALF: | |
150 | insn = bfd_get_32(abfd, hit_data); | |
151 | /* consth, part 1 | |
152 | Just get the symbol value that is referenced */ | |
153 | part1_consth_active = true; | |
154 | part1_consth_value = sym_value + reloc_entry->addend; | |
155 | /* Don't modify insn until R_IHCONST */ | |
156 | break; | |
157 | case R_IHCONST: | |
158 | insn = bfd_get_32(abfd, hit_data); | |
159 | /* consth, part 2 | |
160 | Now relocate the reference */ | |
161 | if (part1_consth_active == false) { | |
162 | fprintf(stderr,"Relocation problem : "); | |
163 | fprintf(stderr,"IHIHALF missing in module %s\n", | |
164 | abfd->filename); | |
165 | return(bfd_reloc_dangerous); | |
166 | } | |
167 | /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */ | |
168 | unsigned_value = 0; /*EXTRACT_HWORD(insn) << 16;*/ | |
169 | unsigned_value += reloc_entry->addend; /* r_symndx */ | |
170 | unsigned_value += part1_consth_value; | |
171 | unsigned_value = unsigned_value >> 16; | |
172 | insn = INSERT_HWORD(insn, unsigned_value); | |
173 | part1_consth_active = false; | |
174 | bfd_put_32(abfd, insn, hit_data); | |
175 | break; | |
176 | case R_BYTE: | |
177 | insn = bfd_get_8(abfd, hit_data); | |
178 | unsigned_value = insn + sym_value + reloc_entry->addend; | |
179 | if (unsigned_value & 0xffffff00) { | |
180 | fprintf(stderr,"Relocation problem : "); | |
181 | fprintf(stderr,"byte value too large in module %s\n", | |
182 | abfd->filename); | |
183 | return(bfd_reloc_overflow); | |
184 | } | |
ab98fd5d | 185 | bfd_put_8(abfd, unsigned_value, hit_data); |
859f11ff SC |
186 | break; |
187 | case R_HWORD: | |
188 | insn = bfd_get_16(abfd, hit_data); | |
189 | unsigned_value = insn + sym_value + reloc_entry->addend; | |
190 | if (unsigned_value & 0xffff0000) { | |
191 | fprintf(stderr,"Relocation problem : "); | |
192 | fprintf(stderr,"hword value too large in module %s\n", | |
193 | abfd->filename); | |
194 | return(bfd_reloc_overflow); | |
f58809fd SC |
195 | } |
196 | ||
2cfd0562 | 197 | bfd_put_16(abfd, insn, hit_data); |
859f11ff SC |
198 | break; |
199 | case R_WORD: | |
200 | insn = bfd_get_32(abfd, hit_data); | |
201 | insn += sym_value + reloc_entry->addend; | |
202 | bfd_put_32(abfd, insn, hit_data); | |
203 | break; | |
204 | default: | |
205 | fprintf(stderr,"Relocation problem : "); | |
206 | fprintf(stderr,"Unrecognized reloc type %d, in module %s\n", | |
207 | r_type,abfd->filename); | |
208 | return (bfd_reloc_dangerous); | |
209 | } | |
210 | ||
211 | ||
212 | return(bfd_reloc_ok); | |
2013f9b4 SC |
213 | } |
214 | ||
215 | /* type rightshift | |
216 | size | |
217 | bitsize | |
218 | pc-relative | |
219 | bitpos | |
220 | absolute | |
221 | complain_on_overflow | |
222 | special_function | |
223 | relocation name | |
224 | partial_inplace | |
225 | src_mask | |
226 | */ | |
227 | ||
228 | /*FIXME: I'm not real sure about this table */ | |
229 | #define NA 0 /* Obsolete fields, via the documentation */ | |
21a7f8b6 | 230 | #define NAB false |
2013f9b4 SC |
231 | static reloc_howto_type howto_table[] = |
232 | { | |
21a7f8b6 | 233 | {R_ABS, 0, 3, NA, false, NA, NAB, true,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false}, |
2013f9b4 SC |
234 | {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10}, |
235 | {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20}, | |
236 | {21}, {22}, {23}, | |
21a7f8b6 SC |
237 | {R_IREL, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false}, |
238 | {R_IABS, 0, 3, NA, false, NA, NAB, true,a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false}, | |
239 | {R_ILOHALF, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false}, | |
240 | {R_IHIHALF, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false}, | |
241 | {R_IHCONST, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false}, | |
242 | {R_BYTE, 0, 0, NA, false, NA, NAB, true,a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false}, | |
243 | {R_HWORD, 0, 1, NA, false, NA, NAB, true,a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false}, | |
244 | {R_WORD, 0, 2, NA, false, NA, NAB, true,a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false}, | |
2013f9b4 SC |
245 | }; |
246 | #undef NA | |
247 | ||
248 | #define BADMAG(x) A29KBADMAG(x) | |
249 | ||
6cba8f4b SC |
250 | #define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \ |
251 | reloc_processing(relent, reloc, symbols, abfd, section) | |
252 | ||
e98e6ec1 | 253 | static void DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) , |
6cba8f4b SC |
254 | arelent *relent AND |
255 | struct internal_reloc *reloc AND | |
256 | asymbol **symbols AND | |
257 | bfd *abfd AND | |
258 | asection *section) | |
259 | { | |
260 | relent->address = reloc->r_vaddr; | |
261 | relent->howto = howto_table + reloc->r_type; | |
262 | if (reloc->r_type == R_IHCONST) | |
263 | { | |
264 | relent->addend = reloc->r_symndx; | |
b772312e | 265 | relent->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr; |
6cba8f4b SC |
266 | } |
267 | else | |
268 | { | |
269 | asymbol *ptr; | |
270 | relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx]; | |
271 | ||
272 | ptr = *(relent->sym_ptr_ptr); | |
273 | ||
274 | if (ptr | |
275 | && ptr->the_bfd == abfd | |
859f11ff | 276 | |
6cba8f4b SC |
277 | && ((ptr->flags & BSF_OLD_COMMON)== 0)) |
278 | { | |
859f11ff | 279 | relent->addend = 0; |
6cba8f4b SC |
280 | } |
281 | else | |
282 | { | |
283 | relent->addend = 0; | |
284 | } | |
285 | relent->address-= section->vma; | |
6cba8f4b SC |
286 | } |
287 | } | |
3b4f1a5d | 288 | |
2013f9b4 SC |
289 | #include "coffcode.h" |
290 | ||
291 | bfd_target a29kcoff_big_vec = | |
292 | { | |
294eaca4 SC |
293 | "coff-a29k-big", /* name */ |
294 | bfd_target_coff_flavour, | |
295 | true, /* data byte order is big */ | |
296 | true, /* header byte order is big */ | |
297 | ||
298 | (HAS_RELOC | EXEC_P | /* object flags */ | |
299 | HAS_LINENO | HAS_DEBUG | | |
300 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT), | |
301 | ||
302 | (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */ | |
303 | | SEC_LOAD | SEC_RELOC | |
304 | | SEC_READONLY ), | |
305 | '_', /* leading underscore */ | |
306 | '/', /* ar_pad_char */ | |
307 | 15, /* ar_max_namelen */ | |
308 | 2, /* minimum section alignment */ | |
309 | /* data */ | |
310 | _do_getb64, _do_putb64, _do_getb32, | |
311 | _do_putb32, _do_getb16, _do_putb16, | |
312 | /* hdrs */ | |
313 | _do_getb64, _do_putb64, _do_getb32, | |
314 | _do_putb32, _do_getb16, _do_putb16, | |
315 | ||
316 | { | |
c2ce0738 | 317 | |
294eaca4 SC |
318 | _bfd_dummy_target, |
319 | coff_object_p, | |
320 | bfd_generic_archive_p, | |
321 | _bfd_dummy_target | |
322 | }, | |
323 | { | |
324 | bfd_false, | |
325 | coff_mkobject, | |
326 | _bfd_generic_mkarchive, | |
327 | bfd_false | |
328 | }, | |
329 | { | |
330 | bfd_false, | |
331 | coff_write_object_contents, | |
332 | _bfd_write_archive_contents, | |
333 | bfd_false | |
334 | }, | |
335 | ||
336 | JUMP_TABLE(coff), | |
337 | COFF_SWAP_TABLE | |
c2ce0738 | 338 | }; |
2013f9b4 | 339 |