1 /* BFD back-end for AMD 29000 COFF binaries.
2 Copyright 1990, 1991, 1992, 1993 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. */
27 #include "coff/a29k.h"
28 #include "coff/internal.h"
31 #define INSERT_HWORD(WORD,HWORD) \
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))
38 /* Provided the symbol, returns the value reffed */
40 get_symbol_value(symbol)
45 if (bfd_is_com_section (symbol->section))
51 relocation = symbol->value +
52 symbol->section->output_section->vma +
53 symbol->section->output_offset;
59 /* this function is in charge of performing all the 29k relocations */
61 static bfd_reloc_status_type
62 DEFUN(a29k_reloc,(abfd, reloc_entry, symbol_in, data, input_section, output_bfd),
64 arelent *reloc_entry AND
65 asymbol *symbol_in AND
67 asection *input_section AND
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;
76 unsigned long sym_value;
77 unsigned long unsigned_value;
78 unsigned short r_type;
81 unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
82 bfd_byte *hit_data =addr + (bfd_byte *)(data);
84 r_type = reloc_entry->howto->type;
87 /* Partial linking - do nothing */
88 reloc_entry->address += input_section->output_offset;
93 if (symbol_in && (symbol_in->section == &bfd_und_section))
95 /* Keep the state machine happy in case we're called again */
96 if (r_type == R_IHIHALF)
98 part1_consth_active = true;
99 part1_consth_value = 0;
101 return(bfd_reloc_undefined);
104 if ((part1_consth_active) && (r_type != R_IHCONST))
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);
113 sym_value = get_symbol_value(symbol_in);
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 */
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);
139 insn = INSERT_HWORD(insn, signed_value);
140 bfd_put_32(abfd, insn ,hit_data);
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);
150 insn = bfd_get_32(abfd, hit_data);
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 */
158 insn = bfd_get_32(abfd, hit_data);
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",
165 return(bfd_reloc_dangerous);
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);
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",
183 return(bfd_reloc_overflow);
185 bfd_put_8(abfd, unsigned_value, hit_data);
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",
194 return(bfd_reloc_overflow);
197 bfd_put_16(abfd, insn, hit_data);
200 insn = bfd_get_32(abfd, hit_data);
201 insn += sym_value + reloc_entry->addend;
202 bfd_put_32(abfd, insn, hit_data);
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);
212 return(bfd_reloc_ok);
228 /*FIXME: I'm not real sure about this table */
229 #define NA 0 /* Obsolete fields, via the documentation */
231 static reloc_howto_type howto_table[] =
233 {R_ABS, 0, 3, NA, false, NA, NAB, true,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false},
234 {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10},
235 {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20},
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},
248 #define BADMAG(x) A29KBADMAG(x)
250 #define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \
251 reloc_processing(relent, reloc, symbols, abfd, section)
253 static void DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) ,
255 struct internal_reloc *reloc AND
256 asymbol **symbols AND
260 relent->address = reloc->r_vaddr;
261 relent->howto = howto_table + reloc->r_type;
262 if (reloc->r_type == R_IHCONST)
264 relent->addend = reloc->r_symndx;
265 relent->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr;
270 relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx];
272 ptr = *(relent->sym_ptr_ptr);
275 && bfd_asymbol_bfd(ptr) == abfd
277 && ((ptr->flags & BSF_OLD_COMMON)== 0))
285 relent->address-= section->vma;
289 #include "coffcode.h"
291 bfd_target a29kcoff_big_vec =
293 "coff-a29k-big", /* name */
294 bfd_target_coff_flavour,
295 true, /* data byte order is big */
296 true, /* header byte order is big */
298 (HAS_RELOC | EXEC_P | /* object flags */
299 HAS_LINENO | HAS_DEBUG |
300 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
302 (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */
303 | SEC_LOAD | SEC_RELOC
305 '_', /* leading underscore */
306 '/', /* ar_pad_char */
307 15, /* ar_max_namelen */
308 2, /* minimum section alignment */
310 _do_getb64, _do_getb_signed_64, _do_putb64,
311 _do_getb32, _do_getb_signed_32, _do_putb32,
312 _do_getb16, _do_getb_signed_16, _do_putb16,
314 _do_getb64, _do_getb_signed_64, _do_putb64,
315 _do_getb32, _do_getb_signed_32, _do_putb32,
316 _do_getb16, _do_getb_signed_16, _do_putb16,
322 bfd_generic_archive_p,
328 _bfd_generic_mkarchive,
333 coff_write_object_contents,
334 _bfd_write_archive_contents,