1 /* Intel 960 COFF support for BFD. */
3 /* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Diddler.
7 BFD 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 1, or (at your option)
12 BFD 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 BFD; see the file COPYING. If not, write to
19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
24 #define BADMAG(x) I960BADMAG(x)
31 #include "intel-coff.h"
32 #include "libcoff.h" /* to allow easier abstraction-breaking */
35 #define CALLS 0x66003800 /* Template for 'calls' instruction */
36 #define BAL 0x0b000000 /* Template for 'bal' instruction */
37 #define BAL_MASK 0x00ffffff
39 static bfd_reloc_status_enum_type
40 optcall_callback(abfd, reloc_entry, symbol_in, data, ignore_input_section)
45 asection *ignore_input_section;
47 /* This item has already been relocated correctly, but we may be
48 * able to patch in yet better code - done by digging out the
49 * correct info on this symbol */
50 bfd_reloc_status_enum_type result;
51 coff_symbol_type *cs = coffsymbol(symbol_in);
53 /* So the target symbol has to be of coff type, and the symbol
54 has to have the correct native information within it */
55 if ((cs->symbol.the_bfd->xvec->flavour != bfd_target_coff_flavour_enum)
56 || (cs->native == (struct internal_syment *)NULL)) {
57 /* This is interesting, consider the case where we're outputting */
58 /* coff from a mix n match input, linking from coff to a symbol */
59 /* defined in a bout file will cause this match to be true. Should */
60 /* I complain ? - This will only work if the bout symbol is non */
62 result = bfd_reloc_dangerous;
65 switch (bfd_h_get_x(abfd, & cs->native->n_sclass))
69 /* This is a call to a leaf procedure, replace instruction with a bal
70 to the correct location */
72 AUXENT *aux = (AUXENT *)(cs->native+2);
73 int word = bfd_getlong(abfd, data + reloc_entry->address);
74 BFD_ASSERT(bfd_h_get_x(abfd, &cs->native->n_numaux)==2);
75 /* We replace the original call instruction with a bal to */
76 /* the bal entry point - the offset of which is described in the */
77 /* 2nd auxent of the original symbol. We keep the native sym and */
78 /* auxents untouched, so the delta between the two is the */
79 /* offset of the bal entry point */
80 word = ((word + (bfd_h_get_x(abfd, &aux->x_bal.x_balntry) -
81 bfd_h_get_x(abfd, &cs->native->n_value)))
83 bfd_putlong(abfd, word, data+reloc_entry->address);
85 result = bfd_reloc_ok;
89 /* This is a call to a system call, replace with a calls to # */
94 result = bfd_reloc_ok;
103 static reloc_howto_type howto_table[] =
123 { (unsigned int) R_RELLONG, 0, 2, 32,false, 0, true, true,
124 0,"rellong", true, 0xffffffff, 0xffffffff},
133 { R_IPRMED, 0, 2, 24,true,0, true, true,0,"iprmed ", true,
134 0x00ffffff, 0x00ffffff},
137 { R_OPTCALL, 0,2,24,true,0, true, true, optcall_callback,
138 "optcall", true, 0x00ffffff, 0x00ffffff},
142 /* The real code is in coff-code.h */
144 #include "coff-code.h"
146 bfd_target icoff_little_vec =
148 "coff-Intel-little", /* name */
149 bfd_target_coff_flavour_enum,
150 false, /* data byte order is little */
151 false, /* header byte order is little */
153 (HAS_RELOC | EXEC_P | /* object flags */
154 HAS_LINENO | HAS_DEBUG |
155 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
157 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
158 '/', /* ar_pad_char */
159 15, /* ar_max_namelen */
161 _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* data */
162 _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* hdrs */
164 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
165 bfd_generic_archive_p, _bfd_dummy_target},
166 {bfd_false, coff_mkobject, /* bfd_set_format */
167 _bfd_generic_mkarchive, bfd_false},
175 bfd_target icoff_big_vec =
177 "coff-Intel-big", /* name */
178 bfd_target_coff_flavour_enum,
179 false, /* data byte order is little */
180 true, /* header byte order is big */
182 (HAS_RELOC | EXEC_P | /* object flags */
183 HAS_LINENO | HAS_DEBUG |
184 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
186 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
187 '/', /* ar_pad_char */
188 15, /* ar_max_namelen */
190 _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* data */
191 _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
193 {_bfd_dummy_target, coff_object_p, bfd_generic_archive_p, _bfd_dummy_target},
194 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, bfd_false},