--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/elf4rom/libs/libelf-0.8.10/lib/x.elfext.c Fri Jan 15 09:07:44 2010 +0000
@@ -0,0 +1,175 @@
+/*
+ * x.elfext.c -- handle ELF format extensions
+ * Copyright (C) 2002 - 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: x.elfext.c,v 1.3 2006/07/07 22:17:50 michael Exp $";
+#endif /* lint */
+
+int
+elf_getphnum(Elf *elf, size_t *resultp) {
+ if (!elf) {
+ return LIBELF_FAILURE;
+ }
+ elf_assert(elf->e_magic == ELF_MAGIC);
+ if (elf->e_kind != ELF_K_ELF) {
+ seterr(ERROR_NOTELF);
+ return LIBELF_FAILURE;
+ }
+ if (!elf->e_ehdr && !_elf_cook(elf)) {
+ return LIBELF_FAILURE;
+ }
+ if (resultp) {
+ *resultp = elf->e_phnum;
+ }
+ return LIBELF_SUCCESS;
+}
+
+int
+elf_getshnum(Elf *elf, size_t *resultp) {
+ size_t num = 0;
+ Elf_Scn *scn;
+
+ if (!elf) {
+ return LIBELF_FAILURE;
+ }
+ elf_assert(elf->e_magic == ELF_MAGIC);
+ if (elf->e_kind != ELF_K_ELF) {
+ seterr(ERROR_NOTELF);
+ return LIBELF_FAILURE;
+ }
+ if (!elf->e_ehdr && !_elf_cook(elf)) {
+ return LIBELF_FAILURE;
+ }
+ if ((scn = elf->e_scn_n)) {
+ num = scn->s_index + 1;
+ }
+ if (resultp) {
+ *resultp = num;
+ }
+ return LIBELF_SUCCESS;
+}
+
+int
+elf_getshstrndx(Elf *elf, size_t *resultp) {
+ size_t num = 0;
+ size_t dummy;
+ Elf_Scn *scn;
+
+ if (!elf) {
+ return LIBELF_FAILURE;
+ }
+ elf_assert(elf->e_magic == ELF_MAGIC);
+ if (resultp == NULL) {
+ resultp = &dummy; /* handle NULL pointer gracefully */
+ }
+ if (elf->e_kind != ELF_K_ELF) {
+ seterr(ERROR_NOTELF);
+ return LIBELF_FAILURE;
+ }
+ if (!elf->e_ehdr && !_elf_cook(elf)) {
+ return LIBELF_FAILURE;
+ }
+ if (elf->e_class == ELFCLASS32) {
+ num = ((Elf32_Ehdr*)elf->e_ehdr)->e_shstrndx;
+ }
+#if __LIBELF64
+ else if (elf->e_class == ELFCLASS64) {
+ num = ((Elf64_Ehdr*)elf->e_ehdr)->e_shstrndx;
+ }
+#endif /* __LIBELF64 */
+ else {
+ if (valid_class(elf->e_class)) {
+ seterr(ERROR_UNIMPLEMENTED);
+ }
+ else {
+ seterr(ERROR_UNKNOWN_CLASS);
+ }
+ return LIBELF_FAILURE;
+ }
+ if (num != SHN_XINDEX) {
+ *resultp = num;
+ return LIBELF_SUCCESS;
+ }
+ /*
+ * look at first section header
+ */
+ if (!(scn = elf->e_scn_1)) {
+ seterr(ERROR_NOSUCHSCN);
+ return LIBELF_FAILURE;
+ }
+ elf_assert(scn->s_magic == SCN_MAGIC);
+#if __LIBELF64
+ if (elf->e_class == ELFCLASS64) {
+ *resultp = scn->s_shdr64.sh_link;
+ return LIBELF_SUCCESS;
+ }
+#endif /* __LIBELF64 */
+ *resultp = scn->s_shdr32.sh_link;
+ return LIBELF_SUCCESS;
+}
+
+int
+elfx_update_shstrndx(Elf *elf, size_t value) {
+ size_t extvalue = 0;
+ Elf_Scn *scn;
+
+ if (!elf) {
+ return LIBELF_FAILURE;
+ }
+ elf_assert(elf->e_magic == ELF_MAGIC);
+ if (value >= SHN_LORESERVE) {
+ extvalue = value;
+ value = SHN_XINDEX;
+ }
+ if (elf->e_kind != ELF_K_ELF) {
+ seterr(ERROR_NOTELF);
+ return LIBELF_FAILURE;
+ }
+ if (!elf->e_ehdr && !_elf_cook(elf)) {
+ return LIBELF_FAILURE;
+ }
+ if (!(scn = _elf_first_scn(elf))) {
+ return LIBELF_FAILURE;
+ }
+ elf_assert(scn->s_magic == SCN_MAGIC);
+ if (elf->e_class == ELFCLASS32) {
+ ((Elf32_Ehdr*)elf->e_ehdr)->e_shstrndx = value;
+ scn->s_shdr32.sh_link = extvalue;
+ }
+#if __LIBELF64
+ else if (elf->e_class == ELFCLASS64) {
+ ((Elf64_Ehdr*)elf->e_ehdr)->e_shstrndx = value;
+ scn->s_shdr64.sh_link = extvalue;
+ }
+#endif /* __LIBELF64 */
+ else {
+ if (valid_class(elf->e_class)) {
+ seterr(ERROR_UNIMPLEMENTED);
+ }
+ else {
+ seterr(ERROR_UNKNOWN_CLASS);
+ }
+ return LIBELF_FAILURE;
+ }
+ elf->e_ehdr_flags |= ELF_F_DIRTY;
+ scn->s_shdr_flags |= ELF_F_DIRTY;
+ return LIBELF_SUCCESS;
+}