Initial import of elftoolchain r2974.vendor/elftoolchain/elftoolchain-r2974

Obtained from:	elftoolchain.org

1 files changed, 136 insertions, 0 deletions

diff --git a/libelf/gelf_symshndx.c b/libelf/gelf_symshndx.c
new file mode 100644
index 000000000000..9cf3b7578183
--- /dev/null
+++ b/libelf/gelf_symshndx.c
@@ -0,0 +1,136 @@
+/*-
+ * Copyright (c) 2006,2008 Joseph Koshy
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+#include <assert.h>
+#include <gelf.h>
+
+#include "_libelf.h"
+
+ELFTC_VCSID("$Id: gelf_symshndx.c 2283 2011-12-04 04:07:24Z jkoshy $");
+
+GElf_Sym *
+gelf_getsymshndx(Elf_Data *d, Elf_Data *id, int ndx, GElf_Sym *dst,
+    Elf32_Word *shindex)
+{
+	int ec;
+	Elf *e;
+	size_t msz;
+	Elf_Scn *scn;
+	uint32_t sh_type;
+	struct _Libelf_Data *ld, *lid;
+
+	ld = (struct _Libelf_Data *) d;
+	lid = (struct _Libelf_Data *) id;
+
+	if (gelf_getsym(d, ndx, dst) == 0)
+		return (NULL);
+
+	if (lid == NULL || (scn = lid->d_scn) == NULL ||
+	    (e = scn->s_elf) == NULL || (e != ld->d_scn->s_elf) ||
+	    shindex == NULL) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (NULL);
+	}
+
+	ec = e->e_class;
+	assert(ec == ELFCLASS32 || ec == ELFCLASS64);
+
+	if (ec == ELFCLASS32)
+		sh_type = scn->s_shdr.s_shdr32.sh_type;
+	else
+		sh_type = scn->s_shdr.s_shdr64.sh_type;
+
+	if (_libelf_xlate_shtype(sh_type) != ELF_T_WORD ||
+	   id->d_type != ELF_T_WORD) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (NULL);
+	}
+
+	msz = _libelf_msize(ELF_T_WORD, ec, e->e_version);
+
+	assert(msz > 0);
+
+	if (msz * ndx >= id->d_size) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (NULL);
+	}
+
+	*shindex = ((Elf32_Word *) id->d_buf)[ndx];
+
+	return (dst);
+}
+
+int
+gelf_update_symshndx(Elf_Data *d, Elf_Data *id, int ndx, GElf_Sym *gs,
+    Elf32_Word xindex)
+{
+	int ec;
+	Elf *e;
+	size_t msz;
+	Elf_Scn *scn;
+	uint32_t sh_type;
+	struct _Libelf_Data *ld, *lid;
+
+	ld = (struct _Libelf_Data *) d;
+	lid = (struct _Libelf_Data *) id;
+
+	if (gelf_update_sym(d, ndx, gs) == 0)
+		return (0);
+
+	if (lid == NULL || (scn = lid->d_scn) == NULL ||
+	    (e = scn->s_elf) == NULL || (e != ld->d_scn->s_elf)) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (0);
+	}
+
+	ec = e->e_class;
+	assert(ec == ELFCLASS32 || ec == ELFCLASS64);
+
+	if (ec == ELFCLASS32)
+		sh_type = scn->s_shdr.s_shdr32.sh_type;
+	else
+		sh_type = scn->s_shdr.s_shdr64.sh_type;
+
+	if (_libelf_xlate_shtype(sh_type) != ELF_T_WORD ||
+	    d->d_type != ELF_T_WORD) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (0);
+	}
+
+	msz = _libelf_msize(ELF_T_WORD, ec, e->e_version);
+	assert(msz > 0);
+
+	if (msz * ndx >= id->d_size) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (0);
+	}
+
+	*(((Elf32_Word *) id->d_buf) + ndx) = xindex;
+
+	return (1);
+}