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 "internalcoff.h"
33 #define INSERT_HWORD(WORD,HWORD) \
34 (((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff))
35 #define EXTRACT_HWORD(WORD) (((WORD) & 0x00ff0000) >> 8) | ((WORD) & 0xff)
37 /* Provided the symbol, returns the value reffed */
39 get_symbol_value(symbol
)
44 if (symbol
!= (asymbol
*)NULL
) {
45 if (symbol
->flags
& BSF_FORT_COMM
) {
48 relocation
= symbol
->value
;
50 if (symbol
->section
!= (asection
*)NULL
) {
51 relocation
+= symbol
->section
->output_section
->vma
+
52 symbol
->section
->output_offset
;
58 static bfd_reloc_status_type
59 a29k_reloc(abfd
, reloc_entry
, symbol_in
, data
, input_section
)
64 asection
*input_section
;
66 static unsigned long part1_consth_active
=0;
67 static unsigned long part1_consth_value
;
68 unsigned long insn
, value
, sym_value
;
69 unsigned short r_type
;
70 /* bfd_reloc_status_type result;*/
71 /* coff_symbol_type *cs = coffsymbol(symbol_in);*/
73 r_type
= reloc_entry
->howto
->type
;
75 /* FIXME: Do we need to check for partial linking here */
76 if (symbol_in
&& (symbol_in
->flags
& BSF_UNDEFINED
)) {
77 /* Keep the state machine happy in case we're called again */
78 if (r_type
== R_IHIHALF
) {
79 part1_consth_active
= 1;
80 part1_consth_value
= 0;
82 return(bfd_reloc_undefined
);
85 if ((part1_consth_active
) && (r_type
!= R_IHCONST
)) {
86 fprintf(stderr
,"Relocation problem : ");
87 fprintf(stderr
,"Missing IHCONST in module %s\n",abfd
->filename
);
88 part1_consth_active
= 0;
89 return(bfd_reloc_dangerous
);
92 insn
= bfd_get_32(abfd
, data
+ reloc_entry
->address
);
93 sym_value
= get_symbol_value(symbol_in
);
97 /* We don't want to use the value already in the offset..
98 The field isn't big enought to hold the full range of values.
99 Will the break anything ? Steve@cygnus */
100 value
= 0; /*EXTRACT_HWORD(insn) << 2;*/
101 value
+= sym_value
+ reloc_entry
->addend
;
102 if (0 && value
<= 0x3ffff) { /* Absolute jmp/call */
103 insn
|= 0x01000000; /* Make it absolute */
104 /* FIXME: Should we change r_type to R_IABS */
106 /* Relative jmp/call, so subtract from the value the
107 address of the place we're coming from */
108 value
-= reloc_entry
->address
+
109 input_section
->output_section
->vma
+
110 input_section
->output_offset
;
111 if (value
> 0x3ffff) {
112 fprintf(stderr
,"Relocation problem : ");
113 fprintf(stderr
,"Jmp/call too far; to %s from %s\n",
114 symbol_in
->name
,abfd
->filename
);
115 return(bfd_reloc_outofrange
);
119 insn
= INSERT_HWORD(insn
,value
);
122 value
= EXTRACT_HWORD(insn
);
123 value
+= sym_value
+ reloc_entry
->addend
;
124 insn
= INSERT_HWORD(insn
,value
);
126 case R_IHIHALF
: /* consth, part 1 */
127 /* Just get the symbol value that is referenced */
128 part1_consth_active
= 1;
129 part1_consth_value
= sym_value
+ reloc_entry
->addend
;
130 return(bfd_reloc_ok
); /* Don't modify insn until R_IHCONST */
132 case R_IHCONST
: /* consth, part 2 */
133 /* Now relocate the reference */
134 if (!part1_consth_active
) {
135 fprintf(stderr
,"Relocation problem : ");
136 fprintf(stderr
,"IHIHALF missing in module %s\n",
138 part1_consth_active
= 0;
139 return(bfd_reloc_dangerous
);
141 /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
142 value
= 0;/*EXTRACT_HWORD(insn) << 16;*/
143 value
+= (unsigned int)reloc_entry
->addend
; /* r_symndx */
144 value
+= part1_consth_value
;
146 insn
= INSERT_HWORD(insn
,value
);
147 part1_consth_active
= 0;
150 value
= (insn
>> 24) + sym_value
+ reloc_entry
->addend
;
151 if (value
& 0xffffff00) {
152 fprintf(stderr
,"Relocation problem : ");
153 fprintf(stderr
,"byte value too large in module %s\n",
155 return(bfd_reloc_overflow
);
157 insn
= (insn
& 0x00ffffff) | (value
<< 24);
160 value
= (insn
>> 16) + sym_value
+ reloc_entry
->addend
;
161 if (value
& 0xffff0000) {
162 fprintf(stderr
,"Relocation problem : ");
163 fprintf(stderr
,"hword value too large in module %s\n",
165 return(bfd_reloc_overflow
);
167 insn
= (insn
& 0x0000ffff) | (value
<<16);
170 insn
+= sym_value
+ reloc_entry
->addend
;
173 fprintf(stderr
,"Relocation problem : ");
174 fprintf(stderr
,"Unrecognized reloc type %d, in module %s\n",
175 r_type
,abfd
->filename
);
176 return (bfd_reloc_dangerous
);
179 bfd_put_32(abfd
, insn
, data
+reloc_entry
->address
);
180 return(bfd_reloc_ok
);
196 /*FIXME: I'm not real sure about this table */
197 #define NA 0 /* Obsolete fields, via the documentation */
198 static reloc_howto_type howto_table
[] =
200 {R_ABS
, 0, 3, NA
, false, NA
, NA
, true,a29k_reloc
,"ABS", true, 0xffffffff,0xffffffff, false},
201 {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10},
202 {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20},
204 {R_IREL
, 0, 3, NA
, true, NA
, NA
, true,a29k_reloc
,"IREL", true, 0xffffffff,0xffffffff, false},
205 {R_IABS
, 0, 3, NA
, false, NA
, NA
, true,a29k_reloc
,"IABS", true, 0xffffffff,0xffffffff, false},
206 {R_ILOHALF
, 0, 3, NA
, true, NA
, NA
, true,a29k_reloc
,"ILOHALF", true, 0x0000ffff,0x0000ffff, false},
207 {R_IHIHALF
, 0, 3, NA
, true, NA
, NA
, true,a29k_reloc
,"IHIHALF", true, 0xffff0000,0xffff0000, false},
208 {R_IHCONST
, 0, 3, NA
, true, NA
, NA
, true,a29k_reloc
,"IHCONST", true, 0xffff0000,0xffff0000, false},
209 {R_BYTE
, 0, 0, NA
, false, NA
, NA
, true,a29k_reloc
,"BYTE", true, 0x000000ff,0x000000ff, false},
210 {R_HWORD
, 0, 1, NA
, false, NA
, NA
, true,a29k_reloc
,"HWORD", true, 0x0000ffff,0x0000ffff, false},
211 {R_WORD
, 0, 2, NA
, false, NA
, NA
, true,a29k_reloc
,"WORD", true, 0xffffffff,0xffffffff, false},
215 #define BADMAG(x) A29KBADMAG(x)
217 #include "coffcode.h"
219 bfd_target a29kcoff_big_vec
=
221 "coff-a29k-big", /* name */
222 bfd_target_coff_flavour
,
223 true, /* data byte order is big */
224 true, /* header byte order is big */
226 (HAS_RELOC
| EXEC_P
| /* object flags */
227 HAS_LINENO
| HAS_DEBUG
|
228 HAS_SYMS
| HAS_LOCALS
| DYNAMIC
| WP_TEXT
),
230 (SEC_HAS_CONTENTS
| SEC_ALLOC
/* section flags */
231 | SEC_LOAD
| SEC_RELOC
233 '/', /* ar_pad_char */
234 15, /* ar_max_namelen */
236 2, /* minimum section alignment */
237 _do_getb64
, _do_putb64
, _do_getb32
, _do_putb32
, _do_getb16
, _do_putb16
, /* data */
238 _do_getb64
, _do_putb64
, _do_getb32
, _do_putb32
, _do_getb16
, _do_putb16
, /* hdrs */
241 {_bfd_dummy_target
, coff_object_p
, /* bfd_check_format */
242 bfd_generic_archive_p
, _bfd_dummy_target
},
243 {bfd_false
, coff_mkobject
, _bfd_generic_mkarchive
, /* bfd_set_format */
245 {bfd_false
, coff_write_object_contents
, /* bfd_write_contents */
246 _bfd_write_archive_contents
, bfd_false
},