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 (cs
->native
->n_sclass
)
69 /* This is a call to a leaf procedure, replace instruction with a bal
70 to the correct location */
72 union internal_auxent
*aux
= (union internal_auxent
*)(cs
->native
+2);
73 int word
= bfd_getlong(abfd
, data
+ reloc_entry
->address
);
74 int olf
= (aux
->x_bal
.x_balntry
- cs
->native
->n_value
);
75 BFD_ASSERT(cs
->native
->n_numaux
==2);
76 /* We replace the original call instruction with a bal to */
77 /* the bal entry point - the offset of which is described in the */
78 /* 2nd auxent of the original symbol. We keep the native sym and */
79 /* auxents untouched, so the delta between the two is the */
80 /* offset of the bal entry point */
82 word
= ((word
+ olf
) & BAL_MASK
) | BAL
;
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
},
168 {bfd_false
, coff_write_object_contents
, /* bfd_write_contents */
169 _bfd_write_archive_contents
, bfd_false
},
174 bfd_target icoff_big_vec
=
176 "coff-Intel-big", /* name */
177 bfd_target_coff_flavour_enum
,
178 false, /* data byte order is little */
179 true, /* header byte order is big */
181 (HAS_RELOC
| EXEC_P
| /* object flags */
182 HAS_LINENO
| HAS_DEBUG
|
183 HAS_SYMS
| HAS_LOCALS
| DYNAMIC
| WP_TEXT
),
185 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* section flags */
186 '/', /* ar_pad_char */
187 15, /* ar_max_namelen */
189 _do_getllong
, _do_putllong
, _do_getlshort
, _do_putlshort
, /* data */
190 _do_getblong
, _do_putblong
, _do_getbshort
, _do_putbshort
, /* hdrs */
192 {_bfd_dummy_target
, coff_object_p
, /* bfd_check_format */
193 bfd_generic_archive_p
, _bfd_dummy_target
},
194 {bfd_false
, coff_mkobject
, /* bfd_set_format */
195 _bfd_generic_mkarchive
, bfd_false
},
196 {bfd_false
, coff_write_object_contents
, /* bfd_write_contents */
197 _bfd_write_archive_contents
, bfd_false
},