Imported Upstream version 0.8.13upstream

1 files changed, 245 insertions, 0 deletions

diff --git a/lib/verneed.h b/lib/verneed.h
new file mode 100644
index 0000000..54f0f06
--- /dev/null
+++ b/lib/verneed.h
@@ -0,0 +1,245 @@
+/*
+ * verneed.h - copy versioning information.
+ * Copyright (C) 2001 - 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef lint
+static const char verneed_h_rcsid[] = "@(#) $Id: verneed.h,v 1.13 2008/05/23 08:15:35 michael Exp $";
+#endif /* lint */
+
+#if VER_NEED_CURRENT != 1
+#error libelf currently does not support VER_NEED_CURRENT != 1
+#endif /* VER_NEED_CURRENT != 1 */
+
+#if TOFILE
+
+static void
+__store_vernaux(vernaux_ftype *dst, const vernaux_mtype *src, unsigned enc) {
+    if (enc == ELFDATA2LSB) {
+	__store_u32L(dst->vna_hash,  src->vna_hash);
+	__store_u16L(dst->vna_flags, src->vna_flags);
+	__store_u16L(dst->vna_other, src->vna_other);
+	__store_u32L(dst->vna_name,  src->vna_name);
+	__store_u32L(dst->vna_next,  src->vna_next);
+    }
+    else {
+	__store_u32M(dst->vna_hash,  src->vna_hash);
+	__store_u16M(dst->vna_flags, src->vna_flags);
+	__store_u16M(dst->vna_other, src->vna_other);
+	__store_u32M(dst->vna_name,  src->vna_name);
+	__store_u32M(dst->vna_next,  src->vna_next);
+    }
+}
+
+static void
+__store_verneed(verneed_ftype *dst, const verneed_mtype *src, unsigned enc) {
+    if (enc == ELFDATA2LSB) {
+	__store_u16L(dst->vn_version, src->vn_version);
+	__store_u16L(dst->vn_cnt,     src->vn_cnt);
+	__store_u32L(dst->vn_file,    src->vn_file);
+	__store_u32L(dst->vn_aux,     src->vn_aux);
+	__store_u32L(dst->vn_next,    src->vn_next);
+    }
+    else {
+	__store_u16M(dst->vn_version, src->vn_version);
+	__store_u16M(dst->vn_cnt,     src->vn_cnt);
+	__store_u32M(dst->vn_file,    src->vn_file);
+	__store_u32M(dst->vn_aux,     src->vn_aux);
+	__store_u32M(dst->vn_next,    src->vn_next);
+    }
+}
+
+typedef vernaux_mtype		vernaux_stype;
+typedef vernaux_ftype		vernaux_dtype;
+typedef verneed_mtype		verneed_stype;
+typedef verneed_ftype		verneed_dtype;
+typedef align_mtype		verneed_atype;
+
+#define copy_vernaux_srctotmp(d, s, e)	(*(d) = *(s))
+#define copy_vernaux_tmptodst(d, s, e)	__store_vernaux((d), (s), (e))
+#define copy_verneed_srctotmp(d, s, e)	(*(d) = *(s))
+#define copy_verneed_tmptodst(d, s, e)	__store_verneed((d), (s), (e))
+
+#define translator_suffix	_tof
+
+#else /* TOFILE */
+
+static void
+__load_vernaux(vernaux_mtype *dst, const vernaux_ftype *src, unsigned enc) {
+    if (enc == ELFDATA2LSB) {
+	dst->vna_hash  = __load_u32L(src->vna_hash);
+	dst->vna_flags = __load_u16L(src->vna_flags);
+	dst->vna_other = __load_u16L(src->vna_other);
+	dst->vna_name  = __load_u32L(src->vna_name);
+	dst->vna_next  = __load_u32L(src->vna_next);
+    }
+    else {
+	dst->vna_hash  = __load_u32M(src->vna_hash);
+	dst->vna_flags = __load_u16M(src->vna_flags);
+	dst->vna_other = __load_u16M(src->vna_other);
+	dst->vna_name  = __load_u32M(src->vna_name);
+	dst->vna_next  = __load_u32M(src->vna_next);
+    }
+}
+
+static void
+__load_verneed(verneed_mtype *dst, const verneed_ftype *src, unsigned enc) {
+    if (enc == ELFDATA2LSB) {
+	dst->vn_version = __load_u16L(src->vn_version);
+	dst->vn_cnt     = __load_u16L(src->vn_cnt);
+	dst->vn_file    = __load_u32L(src->vn_file);
+	dst->vn_aux     = __load_u32L(src->vn_aux);
+	dst->vn_next    = __load_u32L(src->vn_next);
+    }
+    else {
+	dst->vn_version = __load_u16M(src->vn_version);
+	dst->vn_cnt     = __load_u16M(src->vn_cnt);
+	dst->vn_file    = __load_u32M(src->vn_file);
+	dst->vn_aux     = __load_u32M(src->vn_aux);
+	dst->vn_next    = __load_u32M(src->vn_next);
+    }
+}
+
+typedef vernaux_ftype		vernaux_stype;
+typedef vernaux_mtype		vernaux_dtype;
+typedef verneed_ftype		verneed_stype;
+typedef verneed_mtype		verneed_dtype;
+typedef align_ftype		verneed_atype;
+
+#define copy_vernaux_srctotmp(d, s, e)	__load_vernaux((d), (s), (e))
+#define copy_vernaux_tmptodst(d, s, e)	(*(d) = *(s))
+#define copy_verneed_srctotmp(d, s, e)	__load_verneed((d), (s), (e))
+#define copy_verneed_tmptodst(d, s, e)	(*(d) = *(s))
+
+#define translator_suffix	_tom
+
+#endif /* TOFILE */
+
+#define cat3(a,b,c)	a##b##c
+#define xlt3(p,e,s)	cat3(p,e,s)
+#define xltprefix(x)	xlt3(x,_,class_suffix)
+#define translator(x,e)	xlt3(xltprefix(_elf_##x),e,translator_suffix)
+
+static size_t
+xlt_verneed(unsigned char *dst, const unsigned char *src, size_t n, unsigned enc) {
+    size_t off;
+
+    if (sizeof(verneed_stype) != sizeof(verneed_dtype)
+     || sizeof(vernaux_stype) != sizeof(vernaux_dtype)) {
+	/* never happens for ELF v1 and Verneed v1 */
+	seterr(ERROR_UNIMPLEMENTED);
+	return (size_t)-1;
+    }
+    /* size translation shortcut */
+    if (dst == NULL) {
+	return n;
+    }
+    if (src == NULL) {
+	seterr(ERROR_NULLBUF);
+	return (size_t)-1;
+    }
+    off = 0;
+    while (off + sizeof(verneed_stype) <= n) {
+	const verneed_stype *svn;
+	verneed_dtype *dvn;
+	verneed_mtype vn;
+	size_t acount;
+	size_t aoff;
+
+	/*
+	 * check for proper alignment
+	 */
+	if (off % sizeof(verneed_atype)) {
+	    seterr(ERROR_VERNEED_FORMAT);
+	    return (size_t)-1;
+	}
+	/*
+	 * copy and check src
+	 */
+	svn = (verneed_stype*)(src + off);
+	dvn = (verneed_dtype*)(dst + off);
+	copy_verneed_srctotmp(&vn, svn, enc);
+	if (vn.vn_version < 1
+	 || vn.vn_version > VER_NEED_CURRENT) {
+	    seterr(ERROR_VERNEED_VERSION);
+	    return (size_t)-1;
+	}
+	if (vn.vn_cnt < 1
+	 || vn.vn_aux == 0) {
+	    seterr(ERROR_VERNEED_FORMAT);
+	    return (size_t)-1;
+	}
+	copy_verneed_tmptodst(dvn, &vn, enc);
+	/*
+	 * copy aux array
+	 */
+	aoff = off + vn.vn_aux;
+	for (acount = 0; acount < vn.vn_cnt; acount++) {
+	    const vernaux_stype *svna;
+	    vernaux_dtype *dvna;
+	    vernaux_mtype vna;
+
+	    /*
+	     * are we still inside the buffer limits?
+	     */
+	    if (aoff + sizeof(vernaux_stype) > n) {
+		break;
+	    }
+	    /*
+	     * check for proper alignment
+	     */
+	    if (aoff % sizeof(verneed_atype)) {
+		seterr(ERROR_VERNEED_FORMAT);
+		return (size_t)-1;
+	    }
+	    /*
+	     * copy and check src
+	     */
+	    svna = (vernaux_stype*)(src + aoff);
+	    dvna = (vernaux_dtype*)(dst + aoff);
+	    copy_vernaux_srctotmp(&vna, svna, enc);
+	    copy_vernaux_tmptodst(dvna, &vna, enc);
+	    /*
+	     * advance to next vernaux
+	     */
+	    if (vna.vna_next == 0) {
+		/* end of list */
+		break;
+	    }
+	    aoff += vna.vna_next;
+	}
+	/*
+	 * advance to next verneed
+	 */
+	if (vn.vn_next == 0) {
+	    /* end of list */
+	    break;
+	}
+	off += vn.vn_next;
+    }
+    return n;
+}
+
+size_t
+translator(verneed,L11)(unsigned char *dst, const unsigned char *src, size_t n) {
+    return xlt_verneed(dst, src, n, ELFDATA2LSB);
+}
+
+size_t
+translator(verneed,M11)(unsigned char *dst, const unsigned char *src, size_t n) {
+    return xlt_verneed(dst, src, n, ELFDATA2MSB);
+}