--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/elf4rom/libs/libelf-0.8.10/lib/newscn.c Fri Jan 15 09:07:44 2010 +0000
@@ -0,0 +1,145 @@
+/*
+ * newscn.c - implementation of the elf_newscn(3) function.
+ * Copyright (C) 1995 - 2006 Michael Riepe
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <private.h>
+
+#ifndef lint
+static const char rcsid[] = "@(#) $Id: newscn.c,v 1.12 2006/07/07 22:17:01 michael Exp $";
+#endif /* lint */
+
+int
+_elf_update_shnum(Elf *elf, size_t shnum) {
+ size_t extshnum = 0;
+ Elf_Scn *scn;
+
+ elf_assert(elf);
+ elf_assert(elf->e_ehdr);
+ scn = elf->e_scn_1;
+ elf_assert(scn);
+ elf_assert(scn->s_index == 0);
+ if (shnum >= SHN_LORESERVE) {
+ extshnum = shnum;
+ shnum = 0;
+ }
+ if (elf->e_class == ELFCLASS32) {
+ ((Elf32_Ehdr*)elf->e_ehdr)->e_shnum = shnum;
+ scn->s_shdr32.sh_size = extshnum;
+ }
+#if __LIBELF64
+ else if (elf->e_class == ELFCLASS64) {
+ ((Elf64_Ehdr*)elf->e_ehdr)->e_shnum = shnum;
+ scn->s_shdr64.sh_size = extshnum;
+ }
+#endif /* __LIBELF64 */
+ else {
+ if (valid_class(elf->e_class)) {
+ seterr(ERROR_UNIMPLEMENTED);
+ }
+ else {
+ seterr(ERROR_UNKNOWN_CLASS);
+ }
+ return -1;
+ }
+ elf->e_ehdr_flags |= ELF_F_DIRTY;
+ scn->s_shdr_flags |= ELF_F_DIRTY;
+ return 0;
+}
+
+static Elf_Scn*
+_makescn(Elf *elf, size_t index) {
+ Elf_Scn *scn;
+
+ elf_assert(elf);
+ elf_assert(elf->e_magic == ELF_MAGIC);
+ elf_assert(elf->e_ehdr);
+ elf_assert(_elf_scn_init.s_magic == SCN_MAGIC);
+ if (!(scn = (Elf_Scn*)malloc(sizeof(*scn)))) {
+ seterr(ERROR_MEM_SCN);
+ return NULL;
+ }
+ *scn = _elf_scn_init;
+ scn->s_elf = elf;
+ scn->s_scn_flags = ELF_F_DIRTY;
+ scn->s_shdr_flags = ELF_F_DIRTY;
+ scn->s_freeme = 1;
+ scn->s_index = index;
+ return scn;
+}
+
+Elf_Scn*
+_elf_first_scn(Elf *elf) {
+ Elf_Scn *scn;
+
+ elf_assert(elf);
+ elf_assert(elf->e_magic == ELF_MAGIC);
+ if ((scn = elf->e_scn_1)) {
+ return scn;
+ }
+ if ((scn = _makescn(elf, 0))) {
+ elf->e_scn_1 = elf->e_scn_n = scn;
+ if (_elf_update_shnum(elf, 1)) {
+ free(scn);
+ elf->e_scn_1 = elf->e_scn_n = scn = NULL;
+ }
+ }
+ return scn;
+}
+
+static Elf_Scn*
+_buildscn(Elf *elf) {
+ Elf_Scn *scn;
+
+ if (!_elf_first_scn(elf)) {
+ return NULL;
+ }
+ scn = elf->e_scn_n;
+ elf_assert(scn);
+ if (!(scn = _makescn(elf, scn->s_index + 1))) {
+ return NULL;
+ }
+ if (_elf_update_shnum(elf, scn->s_index + 1)) {
+ free(scn);
+ return NULL;
+ }
+ elf->e_scn_n = elf->e_scn_n->s_link = scn;
+ return scn;
+}
+
+Elf_Scn*
+elf_newscn(Elf *elf) {
+ Elf_Scn *scn;
+
+ if (!elf) {
+ return NULL;
+ }
+ elf_assert(elf->e_magic == ELF_MAGIC);
+ if (!elf->e_readable && !elf->e_ehdr) {
+ seterr(ERROR_NOEHDR);
+ }
+ else if (elf->e_kind != ELF_K_ELF) {
+ seterr(ERROR_NOTELF);
+ }
+ else if (!elf->e_ehdr && !_elf_cook(elf)) {
+ return NULL;
+ }
+ else if ((scn = _buildscn(elf))) {
+ return scn;
+ }
+ return NULL;
+}