2 * Copyright (c) 2006 Joseph Koshy
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/limits.h>
40 return (_libelf_getphdr(e, ELFCLASS32));
46 return (_libelf_getphdr(e, ELFCLASS64));
50 gelf_getphdr(Elf *e, int index, GElf_Phdr *d)
58 if (d == NULL || e == NULL ||
59 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) ||
60 (e->e_kind != ELF_K_ELF) || index < 0) {
61 LIBELF_SET_ERROR(ARGUMENT, 0);
65 if (ec == ELFCLASS32) {
66 if ((eh32 = _libelf_ehdr(e, ELFCLASS32, 0)) == NULL ||
67 ((ep32 = _libelf_getphdr(e, ELFCLASS32)) == NULL))
70 if (index >= eh32->e_phnum) {
71 LIBELF_SET_ERROR(ARGUMENT, 0);
77 d->p_type = ep32->p_type;
78 d->p_offset = ep32->p_offset;
79 d->p_vaddr = (Elf64_Addr) ep32->p_vaddr;
80 d->p_paddr = (Elf64_Addr) ep32->p_paddr;
81 d->p_filesz = (Elf64_Xword) ep32->p_filesz;
82 d->p_memsz = (Elf64_Xword) ep32->p_memsz;
83 d->p_flags = ep32->p_flags;
84 d->p_align = (Elf64_Xword) ep32->p_align;
87 if ((eh64 = _libelf_ehdr(e, ELFCLASS64, 0)) == NULL ||
88 (ep64 = _libelf_getphdr(e, ELFCLASS64)) == NULL)
91 if (index >= eh64->e_phnum) {
92 LIBELF_SET_ERROR(ARGUMENT, 0);
105 elf32_newphdr(Elf *e, size_t count)
107 return (_libelf_newphdr(e, ELFCLASS32, count));
111 elf64_newphdr(Elf *e, size_t count)
113 return (_libelf_newphdr(e, ELFCLASS64, count));
117 gelf_newphdr(Elf *e, size_t count)
120 LIBELF_SET_ERROR(ARGUMENT, 0);
123 return (_libelf_newphdr(e, e->e_class, count));
127 gelf_update_phdr(Elf *e, int ndx, GElf_Phdr *s)
134 if (s == NULL || e == NULL || e->e_kind != ELF_K_ELF ||
135 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
136 LIBELF_SET_ERROR(ARGUMENT, 0);
140 if (e->e_cmd == ELF_C_READ) {
141 LIBELF_SET_ERROR(MODE, 0);
145 if ((ehdr = _libelf_ehdr(e, ec, 0)) == NULL)
148 if (ec == ELFCLASS32)
149 phnum = ((Elf32_Ehdr *) ehdr)->e_phnum;
151 phnum = ((Elf64_Ehdr *) ehdr)->e_phnum;
153 if (ndx < 0 || ndx > phnum) {
154 LIBELF_SET_ERROR(ARGUMENT, 0);
158 (void) elf_flagphdr(e, ELF_C_SET, ELF_F_DIRTY);
160 if (ec == ELFCLASS64) {
161 ph64 = e->e_u.e_elf.e_phdr.e_phdr64 + ndx;
166 ph32 = e->e_u.e_elf.e_phdr.e_phdr32 + ndx;
168 ph32->p_type = s->p_type;
169 ph32->p_flags = s->p_flags;
170 LIBELF_COPY_U32(ph32, s, p_offset);
171 LIBELF_COPY_U32(ph32, s, p_vaddr);
172 LIBELF_COPY_U32(ph32, s, p_paddr);
173 LIBELF_COPY_U32(ph32, s, p_filesz);
174 LIBELF_COPY_U32(ph32, s, p_memsz);
175 LIBELF_COPY_U32(ph32, s, p_align);