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2afc285d PB |
1 | /* seclet.c |
2 | Copyright (C) 1992 Free Software Foundation, Inc. | |
3 | Written by Cygnus Support. | |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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. */ | |
20 | ||
e98e6ec1 SC |
21 | /* This module is part of BFD */ |
22 | ||
23 | ||
24 | /* The intention is that one day, all the code which uses sections | |
25 | will change and use seclets instead - maybe seglet would have been | |
26 | a better name.. | |
27 | ||
28 | Anyway, a seclet contains enough info to be able to describe an | |
29 | area of output memory in one go. | |
30 | ||
31 | The only description so far catered for is that of the | |
32 | <<bfd_indirect_seclet>>, which is a select which points to a | |
33 | <<section>> and the <<asymbols>> associated with the section, so | |
34 | that relocation can be done when needed. | |
35 | ||
36 | One day there will be more types - they will at least migrate from | |
37 | the linker's data structures - also there could be extra stuff, | |
38 | like a bss seclet, which descibes a lump of memory as containing | |
39 | zeros compactly, without the horrible SEC_* flag cruft. | |
40 | ||
41 | ||
42 | */ | |
43 | ||
44 | #include "bfd.h" | |
45 | #include "sysdep.h" | |
46 | #include "libbfd.h" | |
47 | #include "seclet.h" | |
48 | #include "coff/internal.h" | |
49 | bfd_seclet_type * | |
50 | DEFUN(bfd_new_seclet,(abfd, section), | |
51 | bfd *abfd AND | |
52 | asection *section) | |
53 | { | |
54 | bfd_seclet_type *n = (bfd_seclet_type *)bfd_alloc(abfd, sizeof(bfd_seclet_type)); | |
55 | if (section->seclets_tail != (bfd_seclet_type *)NULL) { | |
56 | section->seclets_tail->next = n; | |
57 | } | |
58 | else | |
59 | { | |
60 | section->seclets_head = n; | |
61 | } | |
62 | section->seclets_tail = n; | |
63 | ||
64 | return n; | |
e98e6ec1 SC |
65 | } |
66 | ||
67 | ||
68 | ||
69 | ||
70 | #define MAX_ERRORS_IN_A_ROW 10 | |
71 | extern bfd_error_vector_type bfd_error_vector; | |
e98e6ec1 | 72 | |
e98e6ec1 SC |
73 | |
74 | void | |
3be56062 | 75 | DEFUN(rel,(abfd, seclet, output_section, data), |
e98e6ec1 SC |
76 | bfd *abfd AND |
77 | bfd_seclet_type *seclet AND | |
3be56062 SC |
78 | asection *output_section AND |
79 | PTR data) | |
e98e6ec1 | 80 | { |
2cfd0562 | 81 | |
ab98fd5d | 82 | if (output_section->flags & SEC_HAS_CONTENTS |
b58e9180 SC |
83 | && !(output_section->flags & SEC_NEVER_LOAD) |
84 | && seclet->size) | |
e98e6ec1 | 85 | { |
2652a49c | 86 | data = (PTR) bfd_get_relocated_section_contents(abfd, seclet, data); |
e5932011 SC |
87 | if(bfd_set_section_contents(abfd, |
88 | output_section, | |
89 | data, | |
90 | seclet->offset, | |
91 | seclet->size) == false) | |
92 | { | |
93 | abort(); | |
94 | } | |
e98e6ec1 | 95 | } |
e98e6ec1 SC |
96 | } |
97 | ||
98 | void | |
3be56062 | 99 | DEFUN(seclet_dump_seclet,(abfd, seclet, section, data), |
e98e6ec1 SC |
100 | bfd *abfd AND |
101 | bfd_seclet_type *seclet AND | |
3be56062 SC |
102 | asection *section AND |
103 | PTR data) | |
e98e6ec1 SC |
104 | { |
105 | switch (seclet->type) | |
106 | { | |
e5932011 | 107 | case bfd_indirect_seclet: |
e98e6ec1 SC |
108 | /* The contents of this section come from another one somewhere |
109 | else */ | |
3be56062 | 110 | rel(abfd, seclet, section, data); |
e98e6ec1 | 111 | break; |
e5932011 SC |
112 | case bfd_fill_seclet: |
113 | /* Fill in the section with us */ | |
114 | { | |
115 | char *d = malloc(seclet->size); | |
116 | unsigned int i; | |
117 | for (i =0; i < seclet->size; i+=2) { | |
118 | d[i] = seclet->u.fill.value >> 8; | |
119 | } | |
120 | for (i = 1; i < seclet->size; i+=2) { | |
121 | d[i] = seclet->u.fill.value ; | |
122 | } | |
123 | bfd_set_section_contents(abfd, section, d, seclet->offset, seclet->size); | |
124 | ||
125 | } | |
126 | break; | |
127 | default: | |
e98e6ec1 SC |
128 | abort(); |
129 | } | |
e98e6ec1 SC |
130 | } |
131 | ||
132 | void | |
3be56062 SC |
133 | DEFUN(seclet_dump,(abfd, data), |
134 | bfd *abfd AND | |
135 | PTR data) | |
e98e6ec1 SC |
136 | { |
137 | /* Write all the seclets on the bfd out, relocate etc according to the | |
138 | rules */ | |
139 | ||
140 | asection *o = abfd->sections; | |
141 | while (o != (asection *)NULL) | |
142 | { | |
143 | bfd_seclet_type *p = o->seclets_head; | |
144 | while (p != (bfd_seclet_type *)NULL) | |
145 | { | |
3be56062 | 146 | seclet_dump_seclet(abfd, p, o, data); |
e98e6ec1 SC |
147 | p = p ->next; |
148 | } | |
e98e6ec1 SC |
149 | o = o->next; |
150 | } | |
e98e6ec1 | 151 | } |