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.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
29 #include "coff/a29k.h"
30 #include "coff/internal.h"
33 #define INSERT_HWORD(WORD,HWORD) \
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))
40 /* Provided the symbol, returns the value reffed */
42 get_symbol_value(symbol)
47 if (symbol != (asymbol *)NULL) {
48 if (symbol->section == &bfd_com_section)
53 relocation = symbol->value;
55 if (symbol->section != (asection *)NULL) {
56 relocation += symbol->section->output_section->vma +
57 symbol->section->output_offset;
63 /* this function is in charge of performing all the 29k relocations */
65 static bfd_reloc_status_type
66 DEFUN(a29k_reloc,(abfd, reloc_entry, symbol_in, data, input_section),
68 arelent *reloc_entry AND
69 asymbol *symbol_in AND
71 asection *input_section)
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;
76 static unsigned long part1_consth_value;
79 unsigned long sym_value;
80 unsigned long unsigned_value;
81 unsigned short r_type;
85 r_type = reloc_entry->howto->type;
87 /* FIXME: Do we need to check for partial linking here */
88 if (symbol_in && (symbol_in->section == &bfd_und_section))
90 /* Keep the state machine happy in case we're called again */
91 if (r_type == R_IHIHALF)
93 part1_consth_active = true;
94 part1_consth_value = 0;
96 return(bfd_reloc_undefined);
99 if ((part1_consth_active) && (r_type != R_IHCONST))
101 fprintf(stderr,"Relocation problem : ");
102 fprintf(stderr,"Missing IHCONST in module %s\n",abfd->filename);
103 part1_consth_active = false;
104 return(bfd_reloc_dangerous);
107 insn = bfd_get_32(abfd, data + reloc_entry->address);
108 sym_value = get_symbol_value(symbol_in);
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 */
120 /* FIXME: Should we change r_type to R_IABS */
125 /* Relative jmp/call, so subtract from the value the
126 address of the place we're coming from */
127 signed_value -= reloc_entry->address +
128 input_section->output_section->vma +
129 input_section->output_offset;
130 if (signed_value>0x1ffff || signed_value<-0x20000)
131 return(bfd_reloc_outofrange);
135 insn = INSERT_HWORD(insn, signed_value);
138 unsigned_value = EXTRACT_HWORD(insn);
139 unsigned_value += sym_value + reloc_entry->addend;
140 insn = INSERT_HWORD(insn, unsigned_value);
144 Just get the symbol value that is referenced */
145 part1_consth_active = true;
146 part1_consth_value = sym_value + reloc_entry->addend;
147 /* Don't modify insn until R_IHCONST */
148 return(bfd_reloc_ok);
152 Now relocate the reference */
153 if (part1_consth_active == false) {
154 fprintf(stderr,"Relocation problem : ");
155 fprintf(stderr,"IHIHALF missing in module %s\n",
157 return(bfd_reloc_dangerous);
159 /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
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;
168 unsigned_value = (insn >> 24) + sym_value + reloc_entry->addend;
169 if (unsigned_value & 0xffffff00) {
170 fprintf(stderr,"Relocation problem : ");
171 fprintf(stderr,"byte value too large in module %s\n",
173 return(bfd_reloc_overflow);
175 insn = (insn & 0x00ffffff) | (unsigned_value << 24);
178 unsigned_value = (insn >> 16) + sym_value + reloc_entry->addend;
179 if (unsigned_value & 0xffff0000) {
180 fprintf(stderr,"Relocation problem : ");
181 fprintf(stderr,"hword value too large in module %s\n",
183 return(bfd_reloc_overflow);
185 insn = (insn & 0x0000ffff) | (unsigned_value<<16);
188 insn += sym_value + reloc_entry->addend;
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);
197 bfd_put_32(abfd, insn, data+reloc_entry->address);
198 return(bfd_reloc_ok);
214 /*FIXME: I'm not real sure about this table */
215 #define NA 0 /* Obsolete fields, via the documentation */
217 static reloc_howto_type howto_table[] =
219 {R_ABS, 0, 3, NA, false, NA, NAB, true,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false},
220 {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10},
221 {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20},
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},
234 #define BADMAG(x) A29KBADMAG(x)
236 #define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \
237 reloc_processing(relent, reloc, symbols, abfd, section)
239 static void DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) ,
241 struct internal_reloc *reloc AND
242 asymbol **symbols AND
246 relent->address = reloc->r_vaddr;
247 relent->howto = howto_table + reloc->r_type;
248 if (reloc->r_type == R_IHCONST)
250 relent->addend = reloc->r_symndx;
251 relent->sym_ptr_ptr= 0;
256 relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx];
258 ptr = *(relent->sym_ptr_ptr);
261 && ptr->the_bfd == abfd
262 && ptr->section != (asection *) NULL
263 && ((ptr->flags & BSF_OLD_COMMON)== 0))
265 relent->addend = -(ptr->section->vma + ptr->value);
271 relent->address-= section->vma;
272 /* relent->section = 0;*/
276 #include "coffcode.h"
278 bfd_target a29kcoff_big_vec =
280 "coff-a29k-big", /* name */
281 bfd_target_coff_flavour,
282 true, /* data byte order is big */
283 true, /* header byte order is big */
285 (HAS_RELOC | EXEC_P | /* object flags */
286 HAS_LINENO | HAS_DEBUG |
287 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
289 (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */
290 | SEC_LOAD | SEC_RELOC
292 '/', /* ar_pad_char */
293 15, /* ar_max_namelen */
294 2, /* minimum section alignment */
296 _do_getb64, _do_putb64, _do_getb32,
297 _do_putb32, _do_getb16, _do_putb16,
299 _do_getb64, _do_putb64, _do_getb32,
300 _do_putb32, _do_getb16, _do_putb16,
306 bfd_generic_archive_p,
312 _bfd_generic_mkarchive,
317 coff_write_object_contents,
318 _bfd_write_archive_contents,