source: rtems-tools/rtemstoolkit/elftoolchain/libelf/elf_flag.c @ 6f48c91

5
Last change on this file since 6f48c91 was 6f48c91, checked in by Chris Johns <chrisj@…>, on 04/30/18 at 03:39:09

Revert "rtemstoolkit: Update elftoolchain to the latest code."

This reverts commit 0c5db2dd13b8270bb80c497d5f53ae2471f8a819.

  • Property mode set to 100644
File size: 4.4 KB
Line 
1/*-
2 * Copyright (c) 2006,2008-2009,2011 Joseph Koshy
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28
29#include <libelf.h>
30
31#include "_libelf.h"
32
33LIBELF_VCSID("$Id: elf_flag.c 1918 2011-09-22 10:42:06Z jkoshy $");
34
35unsigned int
36elf_flagarhdr(Elf_Arhdr *a, Elf_Cmd c, unsigned int flags)
37{
38        unsigned int r;
39
40        if (a == NULL)
41                return (0);
42
43        if ((c != ELF_C_SET && c != ELF_C_CLR) ||
44            (flags & ~ELF_F_DIRTY) != 0) {
45                LIBELF_SET_ERROR(ARGUMENT, 0);
46                return (0);
47        }
48
49        if (c == ELF_C_SET)
50                r = a->ar_flags |= flags;
51        else
52                r = a->ar_flags &= ~flags;
53
54        return (r & LIBELF_F_API_MASK);
55}
56
57unsigned int
58elf_flagdata(Elf_Data *d, Elf_Cmd c, unsigned int flags)
59{
60        unsigned int r;
61
62        if (d == NULL)
63                return (0);
64
65        if ((c != ELF_C_SET && c != ELF_C_CLR) ||
66            (flags & ~ELF_F_DIRTY) != 0) {
67                LIBELF_SET_ERROR(ARGUMENT, 0);
68                return (0);
69        }
70
71        if (c == ELF_C_SET)
72                r = d->d_flags |= flags;
73        else
74                r = d->d_flags &= ~flags;
75
76        return (r & LIBELF_F_API_MASK);
77}
78
79unsigned int
80elf_flagehdr(Elf *e, Elf_Cmd c, unsigned int flags)
81{
82        int ec;
83        void *ehdr;
84
85        if (e == NULL)
86                return (0);
87
88        if ((c != ELF_C_SET && c != ELF_C_CLR) ||
89            (e->e_kind != ELF_K_ELF) || (flags & ~ELF_F_DIRTY) != 0 ||
90            ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
91                LIBELF_SET_ERROR(ARGUMENT, 0);
92                return (0);
93        }
94
95        if (ec == ELFCLASS32)
96                ehdr = e->e_u.e_elf.e_ehdr.e_ehdr32;
97        else
98                ehdr = e->e_u.e_elf.e_ehdr.e_ehdr64;
99
100        if (ehdr == NULL) {
101                LIBELF_SET_ERROR(SEQUENCE, 0);
102                return (0);
103        }
104
105        return (elf_flagelf(e, c, flags));
106}
107
108unsigned int
109elf_flagelf(Elf *e, Elf_Cmd c, unsigned int flags)
110{
111        int r;
112
113        if (e == NULL)
114                return (0);
115
116        if ((c != ELF_C_SET && c != ELF_C_CLR) ||
117            (e->e_kind != ELF_K_ELF) ||
118            (flags & ~(ELF_F_ARCHIVE | ELF_F_ARCHIVE_SYSV |
119            ELF_F_DIRTY | ELF_F_LAYOUT)) != 0) {
120                LIBELF_SET_ERROR(ARGUMENT, 0);
121                return (0);
122        }
123
124        if ((flags & ELF_F_ARCHIVE_SYSV) && (flags & ELF_F_ARCHIVE) == 0) {
125                LIBELF_SET_ERROR(ARGUMENT, 0);
126                return (0);
127        }
128
129        if ((flags & ELF_F_ARCHIVE) && e->e_cmd != ELF_C_WRITE) {
130                LIBELF_SET_ERROR(MODE, 0);
131                return (0);
132        }
133
134        if (c == ELF_C_SET)
135                r = e->e_flags |= flags;
136        else
137                r = e->e_flags &= ~flags;
138        return (r & LIBELF_F_API_MASK);
139}
140
141unsigned int
142elf_flagphdr(Elf *e, Elf_Cmd c, unsigned int flags)
143{
144        int ec;
145        void *phdr;
146
147        if (e == NULL)
148                return (0);
149
150        if ((c != ELF_C_SET && c != ELF_C_CLR) ||
151            (e->e_kind != ELF_K_ELF) || (flags & ~ELF_F_DIRTY) != 0 ||
152            ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
153                LIBELF_SET_ERROR(ARGUMENT, 0);
154                return (0);
155        }
156
157        if (ec == ELFCLASS32)
158                phdr = e->e_u.e_elf.e_phdr.e_phdr32;
159        else
160                phdr = e->e_u.e_elf.e_phdr.e_phdr64;
161
162        if (phdr == NULL) {
163                LIBELF_SET_ERROR(SEQUENCE, 0);
164                return (0);
165        }
166
167        return (elf_flagelf(e, c, flags));
168}
169
170unsigned int
171elf_flagscn(Elf_Scn *s, Elf_Cmd c, unsigned int flags)
172{
173        int r;
174
175        if (s == NULL)
176                return (0);
177
178        if ((c != ELF_C_SET && c != ELF_C_CLR) ||
179            (flags & ~ELF_F_DIRTY) != 0) {
180                LIBELF_SET_ERROR(ARGUMENT, 0);
181                return (0);
182        }
183
184        if (c == ELF_C_SET)
185                r = s->s_flags |= flags;
186        else
187                r = s->s_flags &= ~flags;
188        return (r & LIBELF_F_API_MASK);
189}
190
191unsigned int
192elf_flagshdr(Elf_Scn *s, Elf_Cmd c, unsigned int flags)
193{
194        return (elf_flagscn(s, c, flags));
195}
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