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1 | /* `a.out' object-file definitions, including extensions to 64-bit fields |
1 | /* `a.out' object-file definitions, including extensions to 64-bit fields |
2 | 2 | ||
3 | Copyright 1999, 2000, 2001, 2003, 2009, 2010 Free Software Foundation, Inc. |
3 | Copyright (C) 1999-2015 Free Software Foundation, Inc. |
4 | 4 | ||
5 | This program is free software; you can redistribute it and/or modify |
5 | This program is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by |
6 | it under the terms of the GNU General Public License as published by |
7 | the Free Software Foundation; either version 3 of the License, or |
7 | the Free Software Foundation; either version 3 of the License, or |
8 | (at your option) any later version. |
8 | (at your option) any later version. |
9 | 9 | ||
10 | This program is distributed in the hope that it will be useful, |
10 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | GNU General Public License for more details. |
13 | GNU General Public License for more details. |
14 | 14 | ||
15 | You should have received a copy of the GNU General Public License |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software |
16 | along with this program; if not, write to the Free Software |
17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
18 | MA 02110-1301, USA. */ |
18 | MA 02110-1301, USA. */ |
19 | 19 | ||
20 | #ifndef __A_OUT_64_H__ |
20 | #ifndef __A_OUT_64_H__ |
21 | #define __A_OUT_64_H__ |
21 | #define __A_OUT_64_H__ |
22 | 22 | ||
23 | #ifndef BYTES_IN_WORD |
23 | #ifndef BYTES_IN_WORD |
24 | #define BYTES_IN_WORD 4 |
24 | #define BYTES_IN_WORD 4 |
25 | #endif |
25 | #endif |
26 | 26 | ||
27 | /* This is the layout on disk of the 32-bit or 64-bit exec header. */ |
27 | /* This is the layout on disk of the 32-bit or 64-bit exec header. */ |
28 | 28 | ||
29 | #ifndef external_exec |
29 | #ifndef external_exec |
30 | struct external_exec |
30 | struct external_exec |
31 | { |
31 | { |
32 | bfd_byte e_info[4]; /* Magic number and stuff. */ |
32 | bfd_byte e_info[4]; /* Magic number and stuff. */ |
33 | bfd_byte e_text[BYTES_IN_WORD]; /* Length of text section in bytes. */ |
33 | bfd_byte e_text[BYTES_IN_WORD]; /* Length of text section in bytes. */ |
34 | bfd_byte e_data[BYTES_IN_WORD]; /* Length of data section in bytes. */ |
34 | bfd_byte e_data[BYTES_IN_WORD]; /* Length of data section in bytes. */ |
35 | bfd_byte e_bss[BYTES_IN_WORD]; /* Length of bss area in bytes. */ |
35 | bfd_byte e_bss[BYTES_IN_WORD]; /* Length of bss area in bytes. */ |
36 | bfd_byte e_syms[BYTES_IN_WORD]; /* Length of symbol table in bytes. */ |
36 | bfd_byte e_syms[BYTES_IN_WORD]; /* Length of symbol table in bytes. */ |
37 | bfd_byte e_entry[BYTES_IN_WORD]; /* Start address. */ |
37 | bfd_byte e_entry[BYTES_IN_WORD]; /* Start address. */ |
38 | bfd_byte e_trsize[BYTES_IN_WORD]; /* Length of text relocation info. */ |
38 | bfd_byte e_trsize[BYTES_IN_WORD]; /* Length of text relocation info. */ |
39 | bfd_byte e_drsize[BYTES_IN_WORD]; /* Length of data relocation info. */ |
39 | bfd_byte e_drsize[BYTES_IN_WORD]; /* Length of data relocation info. */ |
40 | }; |
40 | }; |
41 | 41 | ||
42 | #define EXEC_BYTES_SIZE (4 + BYTES_IN_WORD * 7) |
42 | #define EXEC_BYTES_SIZE (4 + BYTES_IN_WORD * 7) |
43 | 43 | ||
44 | /* Magic numbers for a.out files. */ |
44 | /* Magic numbers for a.out files. */ |
45 | 45 | ||
46 | #if ARCH_SIZE==64 |
46 | #if ARCH_SIZE==64 |
47 | #define OMAGIC 0x1001 /* Code indicating object file. */ |
47 | #define OMAGIC 0x1001 /* Code indicating object file. */ |
48 | #define ZMAGIC 0x1002 /* Code indicating demand-paged executable. */ |
48 | #define ZMAGIC 0x1002 /* Code indicating demand-paged executable. */ |
49 | #define NMAGIC 0x1003 /* Code indicating pure executable. */ |
49 | #define NMAGIC 0x1003 /* Code indicating pure executable. */ |
50 | 50 | ||
51 | /* There is no 64-bit QMAGIC as far as I know. */ |
51 | /* There is no 64-bit QMAGIC as far as I know. */ |
52 | 52 | ||
53 | #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ |
53 | #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ |
54 | && N_MAGIC(x) != NMAGIC \ |
54 | && N_MAGIC(x) != NMAGIC \ |
55 | && N_MAGIC(x) != ZMAGIC) |
55 | && N_MAGIC(x) != ZMAGIC) |
56 | #else |
56 | #else |
57 | #define OMAGIC 0407 /* Object file or impure executable. */ |
57 | #define OMAGIC 0407 /* Object file or impure executable. */ |
58 | #define NMAGIC 0410 /* Code indicating pure executable. */ |
58 | #define NMAGIC 0410 /* Code indicating pure executable. */ |
59 | #define ZMAGIC 0413 /* Code indicating demand-paged executable. */ |
59 | #define ZMAGIC 0413 /* Code indicating demand-paged executable. */ |
60 | #define BMAGIC 0415 /* Used by a b.out object. */ |
60 | #define BMAGIC 0415 /* Used by a b.out object. */ |
61 | 61 | ||
62 | /* This indicates a demand-paged executable with the header in the text. |
62 | /* This indicates a demand-paged executable with the header in the text. |
63 | It is used by 386BSD (and variants) and Linux, at least. */ |
63 | It is used by 386BSD (and variants) and Linux, at least. */ |
64 | #ifndef QMAGIC |
64 | #ifndef QMAGIC |
65 | #define QMAGIC 0314 |
65 | #define QMAGIC 0314 |
66 | #endif |
66 | #endif |
67 | # ifndef N_BADMAG |
67 | # ifndef N_BADMAG |
68 | # define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ |
68 | # define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ |
69 | && N_MAGIC(x) != NMAGIC \ |
69 | && N_MAGIC(x) != NMAGIC \ |
70 | && N_MAGIC(x) != ZMAGIC \ |
70 | && N_MAGIC(x) != ZMAGIC \ |
71 | && N_MAGIC(x) != QMAGIC) |
71 | && N_MAGIC(x) != QMAGIC) |
72 | # endif /* N_BADMAG */ |
72 | # endif /* N_BADMAG */ |
73 | #endif |
73 | #endif |
74 | 74 | ||
75 | #endif |
75 | #endif |
76 | 76 | ||
77 | #ifdef QMAGIC |
77 | #ifdef QMAGIC |
78 | #define N_IS_QMAGIC(x) (N_MAGIC (x) == QMAGIC) |
78 | #define N_IS_QMAGIC(x) (N_MAGIC (x) == QMAGIC) |
79 | #else |
79 | #else |
80 | #define N_IS_QMAGIC(x) (0) |
80 | #define N_IS_QMAGIC(x) (0) |
81 | #endif |
81 | #endif |
82 | 82 | ||
83 | /* The difference between TARGET_PAGE_SIZE and N_SEGSIZE is that TARGET_PAGE_SIZE is |
83 | /* The difference between TARGET_PAGE_SIZE and N_SEGSIZE is that TARGET_PAGE_SIZE is |
84 | the finest granularity at which you can page something, thus it |
84 | the finest granularity at which you can page something, thus it |
85 | controls the padding (if any) before the text segment of a ZMAGIC |
85 | controls the padding (if any) before the text segment of a ZMAGIC |
86 | file. N_SEGSIZE is the resolution at which things can be marked as |
86 | file. N_SEGSIZE is the resolution at which things can be marked as |
87 | read-only versus read/write, so it controls the padding between the |
87 | read-only versus read/write, so it controls the padding between the |
88 | text segment and the data segment (in memory; on disk the padding |
88 | text segment and the data segment (in memory; on disk the padding |
89 | between them is TARGET_PAGE_SIZE). TARGET_PAGE_SIZE and N_SEGSIZE are the same |
89 | between them is TARGET_PAGE_SIZE). TARGET_PAGE_SIZE and N_SEGSIZE are the same |
90 | for most machines, but different for sun3. */ |
90 | for most machines, but different for sun3. */ |
91 | 91 | ||
92 | /* By default, segment size is constant. But some machines override this |
92 | /* By default, segment size is constant. But some machines override this |
93 | to be a function of the a.out header (e.g. machine type). */ |
93 | to be a function of the a.out header (e.g. machine type). */ |
94 | 94 | ||
95 | #ifndef N_SEGSIZE |
95 | #ifndef N_SEGSIZE |
96 | #define N_SEGSIZE(x) SEGMENT_SIZE |
96 | #define N_SEGSIZE(x) SEGMENT_SIZE |
97 | #endif |
97 | #endif |
98 | 98 | ||
99 | /* Virtual memory address of the text section. |
99 | /* Virtual memory address of the text section. |
100 | This is getting very complicated. A good reason to discard a.out format |
100 | This is getting very complicated. A good reason to discard a.out format |
101 | for something that specifies these fields explicitly. But til then... |
101 | for something that specifies these fields explicitly. But til then... |
102 | 102 | ||
103 | * OMAGIC and NMAGIC files: |
103 | * OMAGIC and NMAGIC files: |
104 | (object files: text for "relocatable addr 0" right after the header) |
104 | (object files: text for "relocatable addr 0" right after the header) |
105 | start at 0, offset is EXEC_BYTES_SIZE, size as stated. |
105 | start at 0, offset is EXEC_BYTES_SIZE, size as stated. |
106 | * The text address, offset, and size of ZMAGIC files depend |
106 | * The text address, offset, and size of ZMAGIC files depend |
107 | on the entry point of the file: |
107 | on the entry point of the file: |
108 | * entry point below TEXT_START_ADDR: |
108 | * entry point below TEXT_START_ADDR: |
109 | (hack for SunOS shared libraries) |
109 | (hack for SunOS shared libraries) |
110 | start at 0, offset is 0, size as stated. |
110 | start at 0, offset is 0, size as stated. |
111 | * If N_HEADER_IN_TEXT(x) is true (which defaults to being the |
111 | * If N_HEADER_IN_TEXT(x) is true (which defaults to being the |
112 | case when the entry point is EXEC_BYTES_SIZE or further into a page): |
112 | case when the entry point is EXEC_BYTES_SIZE or further into a page): |
113 | no padding is needed; text can start after exec header. Sun |
113 | no padding is needed; text can start after exec header. Sun |
114 | considers the text segment of such files to include the exec header; |
114 | considers the text segment of such files to include the exec header; |
115 | for BFD's purposes, we don't, which makes more work for us. |
115 | for BFD's purposes, we don't, which makes more work for us. |
116 | start at TEXT_START_ADDR + EXEC_BYTES_SIZE, offset is EXEC_BYTES_SIZE, |
116 | start at TEXT_START_ADDR + EXEC_BYTES_SIZE, offset is EXEC_BYTES_SIZE, |
117 | size as stated minus EXEC_BYTES_SIZE. |
117 | size as stated minus EXEC_BYTES_SIZE. |
118 | * If N_HEADER_IN_TEXT(x) is false (which defaults to being the case when |
118 | * If N_HEADER_IN_TEXT(x) is false (which defaults to being the case when |
119 | the entry point is less than EXEC_BYTES_SIZE into a page (e.g. page |
119 | the entry point is less than EXEC_BYTES_SIZE into a page (e.g. page |
120 | aligned)): (padding is needed so that text can start at a page boundary) |
120 | aligned)): (padding is needed so that text can start at a page boundary) |
121 | start at TEXT_START_ADDR, offset TARGET_PAGE_SIZE, size as stated. |
121 | start at TEXT_START_ADDR, offset TARGET_PAGE_SIZE, size as stated. |
122 | 122 | ||
123 | Specific configurations may want to hardwire N_HEADER_IN_TEXT, |
123 | Specific configurations may want to hardwire N_HEADER_IN_TEXT, |
124 | for efficiency or to allow people to play games with the entry point. |
124 | for efficiency or to allow people to play games with the entry point. |
125 | In that case, you would #define N_HEADER_IN_TEXT(x) as 1 for sunos, |
125 | In that case, you would #define N_HEADER_IN_TEXT(x) as 1 for sunos, |
126 | and as 0 for most other hosts (Sony News, Vax Ultrix, etc). |
126 | and as 0 for most other hosts (Sony News, Vax Ultrix, etc). |
127 | (Do this in the appropriate bfd target file.) |
127 | (Do this in the appropriate bfd target file.) |
128 | (The default is a heuristic that will break if people try changing |
128 | (The default is a heuristic that will break if people try changing |
129 | the entry point, perhaps with the ld -e flag.) |
129 | the entry point, perhaps with the ld -e flag.) |
130 | 130 | ||
131 | * QMAGIC is always like a ZMAGIC for which N_HEADER_IN_TEXT is true, |
131 | * QMAGIC is always like a ZMAGIC for which N_HEADER_IN_TEXT is true, |
132 | and for which the starting address is TARGET_PAGE_SIZE (or should this be |
132 | and for which the starting address is TARGET_PAGE_SIZE (or should this be |
133 | SEGMENT_SIZE?) (TEXT_START_ADDR only applies to ZMAGIC, not to QMAGIC). */ |
133 | SEGMENT_SIZE?) (TEXT_START_ADDR only applies to ZMAGIC, not to QMAGIC). */ |
134 | 134 | ||
135 | /* This macro is only relevant for ZMAGIC files; QMAGIC always has the header |
135 | /* This macro is only relevant for ZMAGIC files; QMAGIC always has the header |
136 | in the text. */ |
136 | in the text. */ |
137 | #ifndef N_HEADER_IN_TEXT |
137 | #ifndef N_HEADER_IN_TEXT |
138 | #define N_HEADER_IN_TEXT(x) \ |
138 | #define N_HEADER_IN_TEXT(x) \ |
139 | (((x).a_entry & (TARGET_PAGE_SIZE-1)) >= EXEC_BYTES_SIZE) |
139 | (((x).a_entry & (TARGET_PAGE_SIZE-1)) >= EXEC_BYTES_SIZE) |
140 | #endif |
140 | #endif |
141 | 141 | ||
142 | /* Sun shared libraries, not linux. This macro is only relevant for ZMAGIC |
142 | /* Sun shared libraries, not linux. This macro is only relevant for ZMAGIC |
143 | files. */ |
143 | files. */ |
144 | #ifndef N_SHARED_LIB |
144 | #ifndef N_SHARED_LIB |
145 | #define N_SHARED_LIB(x) (0) |
145 | #define N_SHARED_LIB(x) (0) |
146 | #endif |
146 | #endif |
147 | 147 | ||
148 | /* Returning 0 not TEXT_START_ADDR for OMAGIC and NMAGIC is based on |
148 | /* Returning 0 not TEXT_START_ADDR for OMAGIC and NMAGIC is based on |
149 | the assumption that we are dealing with a .o file, not an |
149 | the assumption that we are dealing with a .o file, not an |
150 | executable. This is necessary for OMAGIC (but means we don't work |
150 | executable. This is necessary for OMAGIC (but means we don't work |
151 | right on the output from ld -N); more questionable for NMAGIC. */ |
151 | right on the output from ld -N); more questionable for NMAGIC. */ |
152 | 152 | ||
153 | #ifndef N_TXTADDR |
153 | #ifndef N_TXTADDR |
154 | #define N_TXTADDR(x) \ |
154 | #define N_TXTADDR(x) \ |
155 | (/* The address of a QMAGIC file is always one page in, \ |
155 | (/* The address of a QMAGIC file is always one page in, \ |
156 | with the header in the text. */ \ |
156 | with the header in the text. */ \ |
157 | N_IS_QMAGIC (x) \ |
157 | N_IS_QMAGIC (x) \ |
158 | ? (bfd_vma) TARGET_PAGE_SIZE + EXEC_BYTES_SIZE \ |
158 | ? (bfd_vma) TARGET_PAGE_SIZE + EXEC_BYTES_SIZE \ |
159 | : (N_MAGIC (x) != ZMAGIC \ |
159 | : (N_MAGIC (x) != ZMAGIC \ |
160 | ? (bfd_vma) 0 /* Object file or NMAGIC. */ \ |
160 | ? (bfd_vma) 0 /* Object file or NMAGIC. */ \ |
161 | : (N_SHARED_LIB (x) \ |
161 | : (N_SHARED_LIB (x) \ |
162 | ? (bfd_vma) 0 \ |
162 | ? (bfd_vma) 0 \ |
163 | : (N_HEADER_IN_TEXT (x) \ |
163 | : (N_HEADER_IN_TEXT (x) \ |
164 | ? (bfd_vma) TEXT_START_ADDR + EXEC_BYTES_SIZE \ |
164 | ? (bfd_vma) TEXT_START_ADDR + EXEC_BYTES_SIZE \ |
165 | : (bfd_vma) TEXT_START_ADDR)))) |
165 | : (bfd_vma) TEXT_START_ADDR)))) |
166 | #endif |
166 | #endif |
167 | 167 | ||
168 | /* If N_HEADER_IN_TEXT is not true for ZMAGIC, there is some padding |
168 | /* If N_HEADER_IN_TEXT is not true for ZMAGIC, there is some padding |
169 | to make the text segment start at a certain boundary. For most |
169 | to make the text segment start at a certain boundary. For most |
170 | systems, this boundary is TARGET_PAGE_SIZE. But for Linux, in the |
170 | systems, this boundary is TARGET_PAGE_SIZE. But for Linux, in the |
171 | time-honored tradition of crazy ZMAGIC hacks, it is 1024 which is |
171 | time-honored tradition of crazy ZMAGIC hacks, it is 1024 which is |
172 | not what TARGET_PAGE_SIZE needs to be for QMAGIC. */ |
172 | not what TARGET_PAGE_SIZE needs to be for QMAGIC. */ |
173 | 173 | ||
174 | #ifndef ZMAGIC_DISK_BLOCK_SIZE |
174 | #ifndef ZMAGIC_DISK_BLOCK_SIZE |
175 | #define ZMAGIC_DISK_BLOCK_SIZE TARGET_PAGE_SIZE |
175 | #define ZMAGIC_DISK_BLOCK_SIZE TARGET_PAGE_SIZE |
176 | #endif |
176 | #endif |
177 | 177 | ||
178 | #define N_DISK_BLOCK_SIZE(x) \ |
178 | #define N_DISK_BLOCK_SIZE(x) \ |
179 | (N_MAGIC(x) == ZMAGIC ? ZMAGIC_DISK_BLOCK_SIZE : TARGET_PAGE_SIZE) |
179 | (N_MAGIC(x) == ZMAGIC ? ZMAGIC_DISK_BLOCK_SIZE : TARGET_PAGE_SIZE) |
180 | 180 | ||
181 | /* Offset in an a.out of the start of the text section. */ |
181 | /* Offset in an a.out of the start of the text section. */ |
182 | #ifndef N_TXTOFF |
182 | #ifndef N_TXTOFF |
183 | #define N_TXTOFF(x) \ |
183 | #define N_TXTOFF(x) \ |
184 | (/* For {O,N,Q}MAGIC, no padding. */ \ |
184 | (/* For {O,N,Q}MAGIC, no padding. */ \ |
185 | N_MAGIC (x) != ZMAGIC \ |
185 | N_MAGIC (x) != ZMAGIC \ |
186 | ? EXEC_BYTES_SIZE \ |
186 | ? EXEC_BYTES_SIZE \ |
187 | : (N_SHARED_LIB (x) \ |
187 | : (N_SHARED_LIB (x) \ |
188 | ? 0 \ |
188 | ? 0 \ |
189 | : (N_HEADER_IN_TEXT (x) \ |
189 | : (N_HEADER_IN_TEXT (x) \ |
190 | ? EXEC_BYTES_SIZE /* No padding. */ \ |
190 | ? EXEC_BYTES_SIZE /* No padding. */ \ |
191 | : ZMAGIC_DISK_BLOCK_SIZE /* A page of padding. */))) |
191 | : ZMAGIC_DISK_BLOCK_SIZE /* A page of padding. */))) |
192 | #endif |
192 | #endif |
193 | /* Size of the text section. It's always as stated, except that we |
193 | /* Size of the text section. It's always as stated, except that we |
194 | offset it to `undo' the adjustment to N_TXTADDR and N_TXTOFF |
194 | offset it to `undo' the adjustment to N_TXTADDR and N_TXTOFF |
195 | for ZMAGIC files that nominally include the exec header |
195 | for ZMAGIC files that nominally include the exec header |
196 | as part of the first page of text. (BFD doesn't consider the |
196 | as part of the first page of text. (BFD doesn't consider the |
197 | exec header to be part of the text segment.) */ |
197 | exec header to be part of the text segment.) */ |
198 | #ifndef N_TXTSIZE |
198 | #ifndef N_TXTSIZE |
199 | #define N_TXTSIZE(x) \ |
199 | #define N_TXTSIZE(x) \ |
200 | (/* For QMAGIC, we don't consider the header part of the text section. */\ |
200 | (/* For QMAGIC, we don't consider the header part of the text section. */\ |
201 | N_IS_QMAGIC (x) \ |
201 | N_IS_QMAGIC (x) \ |
202 | ? (x).a_text - EXEC_BYTES_SIZE \ |
202 | ? (x).a_text - EXEC_BYTES_SIZE \ |
203 | : ((N_MAGIC (x) != ZMAGIC || N_SHARED_LIB (x)) \ |
203 | : ((N_MAGIC (x) != ZMAGIC || N_SHARED_LIB (x)) \ |
204 | ? (x).a_text \ |
204 | ? (x).a_text \ |
205 | : (N_HEADER_IN_TEXT (x) \ |
205 | : (N_HEADER_IN_TEXT (x) \ |
206 | ? (x).a_text - EXEC_BYTES_SIZE /* No padding. */ \ |
206 | ? (x).a_text - EXEC_BYTES_SIZE /* No padding. */ \ |
207 | : (x).a_text /* A page of padding. */ ))) |
207 | : (x).a_text /* A page of padding. */ ))) |
208 | #endif |
208 | #endif |
209 | /* The address of the data segment in virtual memory. |
209 | /* The address of the data segment in virtual memory. |
210 | It is the text segment address, plus text segment size, rounded |
210 | It is the text segment address, plus text segment size, rounded |
211 | up to a N_SEGSIZE boundary for pure or pageable files. */ |
211 | up to a N_SEGSIZE boundary for pure or pageable files. */ |
212 | #ifndef N_DATADDR |
212 | #ifndef N_DATADDR |
213 | #define N_DATADDR(x) \ |
213 | #define N_DATADDR(x) \ |
214 | (N_MAGIC (x) == OMAGIC \ |
214 | (N_MAGIC (x) == OMAGIC \ |
215 | ? (N_TXTADDR (x) + N_TXTSIZE (x)) \ |
215 | ? (N_TXTADDR (x) + N_TXTSIZE (x)) \ |
216 | : (N_SEGSIZE (x) + ((N_TXTADDR (x) + N_TXTSIZE (x) - 1) \ |
216 | : (N_SEGSIZE (x) + ((N_TXTADDR (x) + N_TXTSIZE (x) - 1) \ |
217 | & ~ (bfd_vma) (N_SEGSIZE (x) - 1)))) |
217 | & ~ (bfd_vma) (N_SEGSIZE (x) - 1)))) |
218 | #endif |
218 | #endif |
219 | /* The address of the BSS segment -- immediately after the data segment. */ |
219 | /* The address of the BSS segment -- immediately after the data segment. */ |
220 | 220 | ||
221 | #define N_BSSADDR(x) (N_DATADDR (x) + (x).a_data) |
221 | #define N_BSSADDR(x) (N_DATADDR (x) + (x).a_data) |
222 | 222 | ||
223 | /* Offsets of the various portions of the file after the text segment. */ |
223 | /* Offsets of the various portions of the file after the text segment. */ |
224 | 224 | ||
225 | /* For {Q,Z}MAGIC, there is padding to make the data segment start on |
225 | /* For {Q,Z}MAGIC, there is padding to make the data segment start on |
226 | a page boundary. Most of the time the a_text field (and thus |
226 | a page boundary. Most of the time the a_text field (and thus |
227 | N_TXTSIZE) already contains this padding. It is possible that for |
227 | N_TXTSIZE) already contains this padding. It is possible that for |
228 | BSDI and/or 386BSD it sometimes doesn't contain the padding, and |
228 | BSDI and/or 386BSD it sometimes doesn't contain the padding, and |
229 | perhaps we should be adding it here. But this seems kind of |
229 | perhaps we should be adding it here. But this seems kind of |
230 | questionable and probably should be BSDI/386BSD-specific if we do |
230 | questionable and probably should be BSDI/386BSD-specific if we do |
231 | do it. |
231 | do it. |
232 | 232 | ||
233 | For NMAGIC (at least for hp300 BSD, probably others), there is |
233 | For NMAGIC (at least for hp300 BSD, probably others), there is |
234 | padding in memory only, not on disk, so we must *not* ever pad here |
234 | padding in memory only, not on disk, so we must *not* ever pad here |
235 | for NMAGIC. */ |
235 | for NMAGIC. */ |
236 | 236 | ||
237 | #ifndef N_DATOFF |
237 | #ifndef N_DATOFF |
238 | #define N_DATOFF(x) (N_TXTOFF (x) + N_TXTSIZE (x)) |
238 | #define N_DATOFF(x) (N_TXTOFF (x) + N_TXTSIZE (x)) |
239 | #endif |
239 | #endif |
240 | #ifndef N_TRELOFF |
240 | #ifndef N_TRELOFF |
241 | #define N_TRELOFF(x) (N_DATOFF (x) + (x).a_data) |
241 | #define N_TRELOFF(x) (N_DATOFF (x) + (x).a_data) |
242 | #endif |
242 | #endif |
243 | #ifndef N_DRELOFF |
243 | #ifndef N_DRELOFF |
244 | #define N_DRELOFF(x) (N_TRELOFF (x) + (x).a_trsize) |
244 | #define N_DRELOFF(x) (N_TRELOFF (x) + (x).a_trsize) |
245 | #endif |
245 | #endif |
246 | #ifndef N_SYMOFF |
246 | #ifndef N_SYMOFF |
247 | #define N_SYMOFF(x) (N_DRELOFF (x) + (x).a_drsize) |
247 | #define N_SYMOFF(x) (N_DRELOFF (x) + (x).a_drsize) |
248 | #endif |
248 | #endif |
249 | #ifndef N_STROFF |
249 | #ifndef N_STROFF |
250 | #define N_STROFF(x) (N_SYMOFF (x) + (x).a_syms) |
250 | #define N_STROFF(x) (N_SYMOFF (x) + (x).a_syms) |
251 | #endif |
251 | #endif |
252 | 252 | ||
253 | /* Symbols */ |
253 | /* Symbols */ |
254 | #ifndef external_nlist |
254 | #ifndef external_nlist |
255 | struct external_nlist |
255 | struct external_nlist |
256 | { |
256 | { |
257 | bfd_byte e_strx[BYTES_IN_WORD]; /* Index into string table of name. */ |
257 | bfd_byte e_strx[BYTES_IN_WORD]; /* Index into string table of name. */ |
258 | bfd_byte e_type[1]; /* Type of symbol. */ |
258 | bfd_byte e_type[1]; /* Type of symbol. */ |
259 | bfd_byte e_other[1]; /* Misc info (usually empty). */ |
259 | bfd_byte e_other[1]; /* Misc info (usually empty). */ |
260 | bfd_byte e_desc[2]; /* Description field. */ |
260 | bfd_byte e_desc[2]; /* Description field. */ |
261 | bfd_byte e_value[BYTES_IN_WORD]; /* Value of symbol. */ |
261 | bfd_byte e_value[BYTES_IN_WORD]; /* Value of symbol. */ |
262 | }; |
262 | }; |
263 | #define EXTERNAL_NLIST_SIZE (BYTES_IN_WORD+4+BYTES_IN_WORD) |
263 | #define EXTERNAL_NLIST_SIZE (BYTES_IN_WORD+4+BYTES_IN_WORD) |
264 | #endif |
264 | #endif |
265 | 265 | ||
266 | struct internal_nlist |
266 | struct internal_nlist |
267 | { |
267 | { |
268 | unsigned long n_strx; /* Index into string table of name. */ |
268 | unsigned long n_strx; /* Index into string table of name. */ |
269 | unsigned char n_type; /* Type of symbol. */ |
269 | unsigned char n_type; /* Type of symbol. */ |
270 | unsigned char n_other; /* Misc info (usually empty). */ |
270 | unsigned char n_other; /* Misc info (usually empty). */ |
271 | unsigned short n_desc; /* Description field. */ |
271 | unsigned short n_desc; /* Description field. */ |
272 | bfd_vma n_value; /* Value of symbol. */ |
272 | bfd_vma n_value; /* Value of symbol. */ |
273 | }; |
273 | }; |
274 | 274 | ||
275 | /* The n_type field is the symbol type, containing: */ |
275 | /* The n_type field is the symbol type, containing: */ |
276 | 276 | ||
277 | #define N_UNDF 0 /* Undefined symbol. */ |
277 | #define N_UNDF 0 /* Undefined symbol. */ |
278 | #define N_ABS 2 /* Absolute symbol -- defined at particular addr. */ |
278 | #define N_ABS 2 /* Absolute symbol -- defined at particular addr. */ |
279 | #define N_TEXT 4 /* Text sym -- defined at offset in text seg. */ |
279 | #define N_TEXT 4 /* Text sym -- defined at offset in text seg. */ |
280 | #define N_DATA 6 /* Data sym -- defined at offset in data seg. */ |
280 | #define N_DATA 6 /* Data sym -- defined at offset in data seg. */ |
281 | #define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg. */ |
281 | #define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg. */ |
282 | #define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink). */ |
282 | #define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink). */ |
283 | #define N_FN 0x1f /* File name of .o file. */ |
283 | #define N_FN 0x1f /* File name of .o file. */ |
284 | #define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh). */ |
284 | #define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh). */ |
285 | /* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT, |
285 | /* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT, |
286 | N_DATA, or N_BSS. When the low-order bit of other types is set, |
286 | N_DATA, or N_BSS. When the low-order bit of other types is set, |
287 | (e.g. N_WARNING versus N_FN), they are two different types. */ |
287 | (e.g. N_WARNING versus N_FN), they are two different types. */ |
288 | #define N_EXT 1 /* External symbol (as opposed to local-to-this-file). */ |
288 | #define N_EXT 1 /* External symbol (as opposed to local-to-this-file). */ |
289 | #define N_TYPE 0x1e |
289 | #define N_TYPE 0x1e |
290 | #define N_STAB 0xe0 /* If any of these bits are on, it's a debug symbol. */ |
290 | #define N_STAB 0xe0 /* If any of these bits are on, it's a debug symbol. */ |
291 | 291 | ||
292 | #define N_INDR 0x0a |
292 | #define N_INDR 0x0a |
293 | 293 | ||
294 | /* The following symbols refer to set elements. |
294 | /* The following symbols refer to set elements. |
295 | All the N_SET[ATDB] symbols with the same name form one set. |
295 | All the N_SET[ATDB] symbols with the same name form one set. |
296 | Space is allocated for the set in the text section, and each set |
296 | Space is allocated for the set in the text section, and each set |
297 | elements value is stored into one word of the space. |
297 | elements value is stored into one word of the space. |
298 | The first word of the space is the length of the set (number of elements). |
298 | The first word of the space is the length of the set (number of elements). |
299 | 299 | ||
300 | The address of the set is made into an N_SETV symbol |
300 | The address of the set is made into an N_SETV symbol |
301 | whose name is the same as the name of the set. |
301 | whose name is the same as the name of the set. |
302 | This symbol acts like a N_DATA global symbol |
302 | This symbol acts like a N_DATA global symbol |
303 | in that it can satisfy undefined external references. */ |
303 | in that it can satisfy undefined external references. */ |
304 | 304 | ||
305 | /* These appear as input to LD, in a .o file. */ |
305 | /* These appear as input to LD, in a .o file. */ |
306 | #define N_SETA 0x14 /* Absolute set element symbol. */ |
306 | #define N_SETA 0x14 /* Absolute set element symbol. */ |
307 | #define N_SETT 0x16 /* Text set element symbol. */ |
307 | #define N_SETT 0x16 /* Text set element symbol. */ |
308 | #define N_SETD 0x18 /* Data set element symbol. */ |
308 | #define N_SETD 0x18 /* Data set element symbol. */ |
309 | #define N_SETB 0x1A /* Bss set element symbol. */ |
309 | #define N_SETB 0x1A /* Bss set element symbol. */ |
310 | 310 | ||
311 | /* This is output from LD. */ |
311 | /* This is output from LD. */ |
312 | #define N_SETV 0x1C /* Pointer to set vector in data area. */ |
312 | #define N_SETV 0x1C /* Pointer to set vector in data area. */ |
313 | 313 | ||
314 | /* Warning symbol. The text gives a warning message, the next symbol |
314 | /* Warning symbol. The text gives a warning message, the next symbol |
315 | in the table will be undefined. When the symbol is referenced, the |
315 | in the table will be undefined. When the symbol is referenced, the |
316 | message is printed. */ |
316 | message is printed. */ |
317 | 317 | ||
318 | #define N_WARNING 0x1e |
318 | #define N_WARNING 0x1e |
319 | 319 | ||
320 | /* Weak symbols. These are a GNU extension to the a.out format. The |
320 | /* Weak symbols. These are a GNU extension to the a.out format. The |
321 | semantics are those of ELF weak symbols. Weak symbols are always |
321 | semantics are those of ELF weak symbols. Weak symbols are always |
322 | externally visible. The N_WEAK? values are squeezed into the |
322 | externally visible. The N_WEAK? values are squeezed into the |
323 | available slots. The value of a N_WEAKU symbol is 0. The values |
323 | available slots. The value of a N_WEAKU symbol is 0. The values |
324 | of the other types are the definitions. */ |
324 | of the other types are the definitions. */ |
325 | #define N_WEAKU 0x0d /* Weak undefined symbol. */ |
325 | #define N_WEAKU 0x0d /* Weak undefined symbol. */ |
326 | #define N_WEAKA 0x0e /* Weak absolute symbol. */ |
326 | #define N_WEAKA 0x0e /* Weak absolute symbol. */ |
327 | #define N_WEAKT 0x0f /* Weak text symbol. */ |
327 | #define N_WEAKT 0x0f /* Weak text symbol. */ |
328 | #define N_WEAKD 0x10 /* Weak data symbol. */ |
328 | #define N_WEAKD 0x10 /* Weak data symbol. */ |
329 | #define N_WEAKB 0x11 /* Weak bss symbol. */ |
329 | #define N_WEAKB 0x11 /* Weak bss symbol. */ |
330 | 330 | ||
331 | /* Relocations |
331 | /* Relocations |
332 | 332 | ||
333 | There are two types of relocation flavours for a.out systems, |
333 | There are two types of relocation flavours for a.out systems, |
334 | standard and extended. The standard form is used on systems where the |
334 | standard and extended. The standard form is used on systems where the |
335 | instruction has room for all the bits of an offset to the operand, whilst |
335 | instruction has room for all the bits of an offset to the operand, whilst |
336 | the extended form is used when an address operand has to be split over n |
336 | the extended form is used when an address operand has to be split over n |
337 | instructions. Eg, on the 68k, each move instruction can reference |
337 | instructions. Eg, on the 68k, each move instruction can reference |
338 | the target with a displacement of 16 or 32 bits. On the sparc, move |
338 | the target with a displacement of 16 or 32 bits. On the sparc, move |
339 | instructions use an offset of 14 bits, so the offset is stored in |
339 | instructions use an offset of 14 bits, so the offset is stored in |
340 | the reloc field, and the data in the section is ignored. */ |
340 | the reloc field, and the data in the section is ignored. */ |
341 | 341 | ||
342 | /* This structure describes a single relocation to be performed. |
342 | /* This structure describes a single relocation to be performed. |
343 | The text-relocation section of the file is a vector of these structures, |
343 | The text-relocation section of the file is a vector of these structures, |
344 | all of which apply to the text section. |
344 | all of which apply to the text section. |
345 | Likewise, the data-relocation section applies to the data section. */ |
345 | Likewise, the data-relocation section applies to the data section. */ |
346 | 346 | ||
347 | struct reloc_std_external |
347 | struct reloc_std_external |
348 | { |
348 | { |
349 | bfd_byte r_address[BYTES_IN_WORD]; /* Offset of of data to relocate. */ |
349 | bfd_byte r_address[BYTES_IN_WORD]; /* Offset of of data to relocate. */ |
350 | bfd_byte r_index[3]; /* Symbol table index of symbol. */ |
350 | bfd_byte r_index[3]; /* Symbol table index of symbol. */ |
351 | bfd_byte r_type[1]; /* Relocation type. */ |
351 | bfd_byte r_type[1]; /* Relocation type. */ |
352 | }; |
352 | }; |
353 | 353 | ||
354 | #define RELOC_STD_BITS_PCREL_BIG ((unsigned int) 0x80) |
354 | #define RELOC_STD_BITS_PCREL_BIG ((unsigned int) 0x80) |
355 | #define RELOC_STD_BITS_PCREL_LITTLE ((unsigned int) 0x01) |
355 | #define RELOC_STD_BITS_PCREL_LITTLE ((unsigned int) 0x01) |
356 | 356 | ||
357 | #define RELOC_STD_BITS_LENGTH_BIG ((unsigned int) 0x60) |
357 | #define RELOC_STD_BITS_LENGTH_BIG ((unsigned int) 0x60) |
358 | #define RELOC_STD_BITS_LENGTH_SH_BIG 5 |
358 | #define RELOC_STD_BITS_LENGTH_SH_BIG 5 |
359 | #define RELOC_STD_BITS_LENGTH_LITTLE ((unsigned int) 0x06) |
359 | #define RELOC_STD_BITS_LENGTH_LITTLE ((unsigned int) 0x06) |
360 | #define RELOC_STD_BITS_LENGTH_SH_LITTLE 1 |
360 | #define RELOC_STD_BITS_LENGTH_SH_LITTLE 1 |
361 | 361 | ||
362 | #define RELOC_STD_BITS_EXTERN_BIG ((unsigned int) 0x10) |
362 | #define RELOC_STD_BITS_EXTERN_BIG ((unsigned int) 0x10) |
363 | #define RELOC_STD_BITS_EXTERN_LITTLE ((unsigned int) 0x08) |
363 | #define RELOC_STD_BITS_EXTERN_LITTLE ((unsigned int) 0x08) |
364 | 364 | ||
365 | #define RELOC_STD_BITS_BASEREL_BIG ((unsigned int) 0x08) |
365 | #define RELOC_STD_BITS_BASEREL_BIG ((unsigned int) 0x08) |
366 | #define RELOC_STD_BITS_BASEREL_LITTLE ((unsigned int) 0x10) |
366 | #define RELOC_STD_BITS_BASEREL_LITTLE ((unsigned int) 0x10) |
367 | 367 | ||
368 | #define RELOC_STD_BITS_JMPTABLE_BIG ((unsigned int) 0x04) |
368 | #define RELOC_STD_BITS_JMPTABLE_BIG ((unsigned int) 0x04) |
369 | #define RELOC_STD_BITS_JMPTABLE_LITTLE ((unsigned int) 0x20) |
369 | #define RELOC_STD_BITS_JMPTABLE_LITTLE ((unsigned int) 0x20) |
370 | 370 | ||
371 | #define RELOC_STD_BITS_RELATIVE_BIG ((unsigned int) 0x02) |
371 | #define RELOC_STD_BITS_RELATIVE_BIG ((unsigned int) 0x02) |
372 | #define RELOC_STD_BITS_RELATIVE_LITTLE ((unsigned int) 0x40) |
372 | #define RELOC_STD_BITS_RELATIVE_LITTLE ((unsigned int) 0x40) |
373 | 373 | ||
374 | #define RELOC_STD_SIZE (BYTES_IN_WORD + 3 + 1) /* Bytes per relocation entry. */ |
374 | #define RELOC_STD_SIZE (BYTES_IN_WORD + 3 + 1) /* Bytes per relocation entry. */ |
375 | 375 | ||
376 | struct reloc_std_internal |
376 | struct reloc_std_internal |
377 | { |
377 | { |
378 | bfd_vma r_address; /* Address (within segment) to be relocated. */ |
378 | bfd_vma r_address; /* Address (within segment) to be relocated. */ |
379 | /* The meaning of r_symbolnum depends on r_extern. */ |
379 | /* The meaning of r_symbolnum depends on r_extern. */ |
380 | unsigned int r_symbolnum:24; |
380 | unsigned int r_symbolnum:24; |
381 | /* Nonzero means value is a pc-relative offset |
381 | /* Nonzero means value is a pc-relative offset |
382 | and it should be relocated for changes in its own address |
382 | and it should be relocated for changes in its own address |
383 | as well as for changes in the symbol or section specified. */ |
383 | as well as for changes in the symbol or section specified. */ |
384 | unsigned int r_pcrel:1; |
384 | unsigned int r_pcrel:1; |
385 | /* Length (as exponent of 2) of the field to be relocated. |
385 | /* Length (as exponent of 2) of the field to be relocated. |
386 | Thus, a value of 2 indicates 1<<2 bytes. */ |
386 | Thus, a value of 2 indicates 1<<2 bytes. */ |
387 | unsigned int r_length:2; |
387 | unsigned int r_length:2; |
388 | /* 1 => relocate with value of symbol. |
388 | /* 1 => relocate with value of symbol. |
389 | r_symbolnum is the index of the symbol |
389 | r_symbolnum is the index of the symbol |
390 | in files the symbol table. |
390 | in files the symbol table. |
391 | 0 => relocate with the address of a segment. |
391 | 0 => relocate with the address of a segment. |
392 | r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS |
392 | r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS |
393 | (the N_EXT bit may be set also, but signifies nothing). */ |
393 | (the N_EXT bit may be set also, but signifies nothing). */ |
394 | unsigned int r_extern:1; |
394 | unsigned int r_extern:1; |
395 | /* The next three bits are for SunOS shared libraries, and seem to |
395 | /* The next three bits are for SunOS shared libraries, and seem to |
396 | be undocumented. */ |
396 | be undocumented. */ |
397 | unsigned int r_baserel:1; /* Linkage table relative. */ |
397 | unsigned int r_baserel:1; /* Linkage table relative. */ |
398 | unsigned int r_jmptable:1; /* pc-relative to jump table. */ |
398 | unsigned int r_jmptable:1; /* pc-relative to jump table. */ |
399 | unsigned int r_relative:1; /* "relative relocation". */ |
399 | unsigned int r_relative:1; /* "relative relocation". */ |
400 | /* unused */ |
400 | /* unused */ |
401 | unsigned int r_pad:1; /* Padding -- set to zero. */ |
401 | unsigned int r_pad:1; /* Padding -- set to zero. */ |
402 | }; |
402 | }; |
403 | 403 | ||
404 | 404 | ||
405 | /* EXTENDED RELOCS. */ |
405 | /* EXTENDED RELOCS. */ |
406 | 406 | ||
407 | struct reloc_ext_external |
407 | struct reloc_ext_external |
408 | { |
408 | { |
409 | bfd_byte r_address[BYTES_IN_WORD]; /* Offset of of data to relocate. */ |
409 | bfd_byte r_address[BYTES_IN_WORD]; /* Offset of of data to relocate. */ |
410 | bfd_byte r_index[3]; /* Symbol table index of symbol. */ |
410 | bfd_byte r_index[3]; /* Symbol table index of symbol. */ |
411 | bfd_byte r_type[1]; /* Relocation type. */ |
411 | bfd_byte r_type[1]; /* Relocation type. */ |
412 | bfd_byte r_addend[BYTES_IN_WORD]; /* Datum addend. */ |
412 | bfd_byte r_addend[BYTES_IN_WORD]; /* Datum addend. */ |
413 | }; |
413 | }; |
414 | 414 | ||
415 | #ifndef RELOC_EXT_BITS_EXTERN_BIG |
415 | #ifndef RELOC_EXT_BITS_EXTERN_BIG |
416 | #define RELOC_EXT_BITS_EXTERN_BIG ((unsigned int) 0x80) |
416 | #define RELOC_EXT_BITS_EXTERN_BIG ((unsigned int) 0x80) |
417 | #endif |
417 | #endif |
418 | 418 | ||
419 | #ifndef RELOC_EXT_BITS_EXTERN_LITTLE |
419 | #ifndef RELOC_EXT_BITS_EXTERN_LITTLE |
420 | #define RELOC_EXT_BITS_EXTERN_LITTLE ((unsigned int) 0x01) |
420 | #define RELOC_EXT_BITS_EXTERN_LITTLE ((unsigned int) 0x01) |
421 | #endif |
421 | #endif |
422 | 422 | ||
423 | #ifndef RELOC_EXT_BITS_TYPE_BIG |
423 | #ifndef RELOC_EXT_BITS_TYPE_BIG |
424 | #define RELOC_EXT_BITS_TYPE_BIG ((unsigned int) 0x1F) |
424 | #define RELOC_EXT_BITS_TYPE_BIG ((unsigned int) 0x1F) |
425 | #endif |
425 | #endif |
426 | 426 | ||
427 | #ifndef RELOC_EXT_BITS_TYPE_SH_BIG |
427 | #ifndef RELOC_EXT_BITS_TYPE_SH_BIG |
428 | #define RELOC_EXT_BITS_TYPE_SH_BIG 0 |
428 | #define RELOC_EXT_BITS_TYPE_SH_BIG 0 |
429 | #endif |
429 | #endif |
430 | 430 | ||
431 | #ifndef RELOC_EXT_BITS_TYPE_LITTLE |
431 | #ifndef RELOC_EXT_BITS_TYPE_LITTLE |
432 | #define RELOC_EXT_BITS_TYPE_LITTLE ((unsigned int) 0xF8) |
432 | #define RELOC_EXT_BITS_TYPE_LITTLE ((unsigned int) 0xF8) |
433 | #endif |
433 | #endif |
434 | 434 | ||
435 | #ifndef RELOC_EXT_BITS_TYPE_SH_LITTLE |
435 | #ifndef RELOC_EXT_BITS_TYPE_SH_LITTLE |
436 | #define RELOC_EXT_BITS_TYPE_SH_LITTLE 3 |
436 | #define RELOC_EXT_BITS_TYPE_SH_LITTLE 3 |
437 | #endif |
437 | #endif |
438 | 438 | ||
439 | /* Bytes per relocation entry. */ |
439 | /* Bytes per relocation entry. */ |
440 | #define RELOC_EXT_SIZE (BYTES_IN_WORD + 3 + 1 + BYTES_IN_WORD) |
440 | #define RELOC_EXT_SIZE (BYTES_IN_WORD + 3 + 1 + BYTES_IN_WORD) |
441 | 441 | ||
442 | enum reloc_type |
442 | enum reloc_type |
443 | { |
443 | { |
444 | /* Simple relocations. */ |
444 | /* Simple relocations. */ |
445 | RELOC_8, /* data[0:7] = addend + sv */ |
445 | RELOC_8, /* data[0:7] = addend + sv */ |
446 | RELOC_16, /* data[0:15] = addend + sv */ |
446 | RELOC_16, /* data[0:15] = addend + sv */ |
447 | RELOC_32, /* data[0:31] = addend + sv */ |
447 | RELOC_32, /* data[0:31] = addend + sv */ |
448 | /* PC-rel displacement. */ |
448 | /* PC-rel displacement. */ |
449 | RELOC_DISP8, /* data[0:7] = addend - pc + sv */ |
449 | RELOC_DISP8, /* data[0:7] = addend - pc + sv */ |
450 | RELOC_DISP16, /* data[0:15] = addend - pc + sv */ |
450 | RELOC_DISP16, /* data[0:15] = addend - pc + sv */ |
451 | RELOC_DISP32, /* data[0:31] = addend - pc + sv */ |
451 | RELOC_DISP32, /* data[0:31] = addend - pc + sv */ |
452 | /* Special. */ |
452 | /* Special. */ |
453 | RELOC_WDISP30, /* data[0:29] = (addend + sv - pc)>>2 */ |
453 | RELOC_WDISP30, /* data[0:29] = (addend + sv - pc)>>2 */ |
454 | RELOC_WDISP22, /* data[0:21] = (addend + sv - pc)>>2 */ |
454 | RELOC_WDISP22, /* data[0:21] = (addend + sv - pc)>>2 */ |
455 | RELOC_HI22, /* data[0:21] = (addend + sv)>>10 */ |
455 | RELOC_HI22, /* data[0:21] = (addend + sv)>>10 */ |
456 | RELOC_22, /* data[0:21] = (addend + sv) */ |
456 | RELOC_22, /* data[0:21] = (addend + sv) */ |
457 | RELOC_13, /* data[0:12] = (addend + sv) */ |
457 | RELOC_13, /* data[0:12] = (addend + sv) */ |
458 | RELOC_LO10, /* data[0:9] = (addend + sv) */ |
458 | RELOC_LO10, /* data[0:9] = (addend + sv) */ |
459 | RELOC_SFA_BASE, |
459 | RELOC_SFA_BASE, |
460 | RELOC_SFA_OFF13, |
460 | RELOC_SFA_OFF13, |
461 | /* P.I.C. (base-relative). */ |
461 | /* P.I.C. (base-relative). */ |
462 | RELOC_BASE10, /* Not sure - maybe we can do this the */ |
462 | RELOC_BASE10, /* Not sure - maybe we can do this the */ |
463 | RELOC_BASE13, /* right way now */ |
463 | RELOC_BASE13, /* right way now */ |
464 | RELOC_BASE22, |
464 | RELOC_BASE22, |
465 | /* For some sort of pc-rel P.I.C. (?) */ |
465 | /* For some sort of pc-rel P.I.C. (?) */ |
466 | RELOC_PC10, |
466 | RELOC_PC10, |
467 | RELOC_PC22, |
467 | RELOC_PC22, |
468 | /* P.I.C. jump table. */ |
468 | /* P.I.C. jump table. */ |
469 | RELOC_JMP_TBL, |
469 | RELOC_JMP_TBL, |
470 | /* Reputedly for shared libraries somehow. */ |
470 | /* Reputedly for shared libraries somehow. */ |
471 | RELOC_SEGOFF16, |
471 | RELOC_SEGOFF16, |
472 | RELOC_GLOB_DAT, |
472 | RELOC_GLOB_DAT, |
473 | RELOC_JMP_SLOT, |
473 | RELOC_JMP_SLOT, |
474 | RELOC_RELATIVE, |
474 | RELOC_RELATIVE, |
475 | 475 | ||
476 | RELOC_11, |
476 | RELOC_11, |
477 | RELOC_WDISP2_14, |
477 | RELOC_WDISP2_14, |
478 | RELOC_WDISP19, |
478 | RELOC_WDISP19, |
479 | RELOC_HHI22, /* data[0:21] = (addend + sv) >> 42 */ |
479 | RELOC_HHI22, /* data[0:21] = (addend + sv) >> 42 */ |
480 | RELOC_HLO10, /* data[0:9] = (addend + sv) >> 32 */ |
480 | RELOC_HLO10, /* data[0:9] = (addend + sv) >> 32 */ |
481 | 481 | ||
482 | /* 29K relocation types. */ |
482 | /* 29K relocation types. */ |
483 | RELOC_JUMPTARG, |
483 | RELOC_JUMPTARG, |
484 | RELOC_CONST, |
484 | RELOC_CONST, |
485 | RELOC_CONSTH, |
485 | RELOC_CONSTH, |
486 | 486 | ||
487 | /* All the new ones I can think of, for sparc v9. */ |
487 | /* All the new ones I can think of, for sparc v9. */ |
488 | RELOC_64, /* data[0:63] = addend + sv */ |
488 | RELOC_64, /* data[0:63] = addend + sv */ |
489 | RELOC_DISP64, /* data[0:63] = addend - pc + sv */ |
489 | RELOC_DISP64, /* data[0:63] = addend - pc + sv */ |
490 | RELOC_WDISP21, /* data[0:20] = (addend + sv - pc)>>2 */ |
490 | RELOC_WDISP21, /* data[0:20] = (addend + sv - pc)>>2 */ |
491 | RELOC_DISP21, /* data[0:20] = addend - pc + sv */ |
491 | RELOC_DISP21, /* data[0:20] = addend - pc + sv */ |
492 | RELOC_DISP14, /* data[0:13] = addend - pc + sv */ |
492 | RELOC_DISP14, /* data[0:13] = addend - pc + sv */ |
493 | /* Q . |
493 | /* Q . |
494 | What are the other ones, |
494 | What are the other ones, |
495 | Since this is a clean slate, can we throw away the ones we dont |
495 | Since this is a clean slate, can we throw away the ones we dont |
496 | understand ? Should we sort the values ? What about using a |
496 | understand ? Should we sort the values ? What about using a |
497 | microcode format like the 68k ? */ |
497 | microcode format like the 68k ? */ |
498 | NO_RELOC |
498 | NO_RELOC |
499 | }; |
499 | }; |
500 | 500 | ||
501 | 501 | ||
502 | struct reloc_internal |
502 | struct reloc_internal |
503 | { |
503 | { |
504 | bfd_vma r_address; /* Offset of of data to relocate. */ |
504 | bfd_vma r_address; /* Offset of of data to relocate. */ |
505 | long r_index; /* Symbol table index of symbol. */ |
505 | long r_index; /* Symbol table index of symbol. */ |
506 | enum reloc_type r_type; /* Relocation type. */ |
506 | enum reloc_type r_type; /* Relocation type. */ |
507 | bfd_vma r_addend; /* Datum addend. */ |
507 | bfd_vma r_addend; /* Datum addend. */ |
508 | }; |
508 | }; |
509 | 509 | ||
510 | /* Q. |
510 | /* Q. |
511 | Should the length of the string table be 4 bytes or 8 bytes ? |
511 | Should the length of the string table be 4 bytes or 8 bytes ? |
512 | 512 | ||
513 | Q. |
513 | Q. |
514 | What about archive indexes ? */ |
514 | What about archive indexes ? */ |
515 | 515 | ||
516 | #endif /* __A_OUT_64_H__ */2><2> |
516 | #endif /* __A_OUT_64_H__ */2><2> |