rip out all the duplicated debug code and move into a shared file

1 files changed, 106 insertions, 0 deletions

diff --git a/ldso/ldso/dl-debug.c b/ldso/ldso/dl-debug.c
new file mode 100644
index 000000000..7ce8bfbce
--- /dev/null
+++ b/ldso/ldso/dl-debug.c
@@ -0,0 +1,106 @@
+/* vi: set sw=4 ts=4: */
+/* common debug code for ELF shared library loader
+ *
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
+ *                         David Engel, Hongjiu Lu and Mitch D'Souza
+ * Copyright (C) 2001-2004 Erik Andersen
+ * Copyright (C) 2002-2004, Axis Communications AB
+ * Copyright (C) 2003, 2004 Red Hat, Inc.
+ * Copyright (C) 2002, Steven J. Hill (sjhill@realitydiluted.com)
+ * Copyright (C) 2001-2002 David A. Schleef
+ * Copyright (C) 2004 Joakim Tjernlund
+ * Copyright (C) 2002, Stefan Allius <allius@atecom.com> and
+ *                     Eddie C. Dost <ecd@atecom.com>
+ * Copyright (C) 2003, 2004, 2005  Paul Mundt <lethal@linux-sh.org>
+ *
+ * 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. The name of the above contributors may not be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE 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 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 "ldso.h"
+
+#if defined (__SUPPORT_LD_DEBUG__)
+
+/* include the arch-specific _dl_reltypes_tab */
+#include "dl-debug.h"
+
+static const char *_dl_reltypes(int type)
+{
+	static char buf[50];
+	const char *str;
+	int tabsize;
+
+	tabsize = (int)(sizeof(_dl_reltypes_tab) / sizeof(_dl_reltypes_tab[0]));
+
+	if (type >= tabsize || (str = _dl_reltypes_tab[type]) == NULL)
+		str = _dl_simple_ltoa(buf, (unsigned long)type);
+
+	return str;
+}
+static void debug_sym(ElfW(Sym) *symtab, char *strtab, int symtab_index)
+{
+	if (!_dl_debug_symbols || !symtab_index)
+		return;
+
+	_dl_dprintf(_dl_debug_file,
+		"\n%s\n\tvalue=%x\tsize=%x\tinfo=%x\tother=%x\tshndx=%x",
+		strtab + symtab[symtab_index].st_name,
+		symtab[symtab_index].st_value,
+		symtab[symtab_index].st_size,
+		symtab[symtab_index].st_info,
+		symtab[symtab_index].st_other,
+		symtab[symtab_index].st_shndx);
+}
+
+static void debug_reloc(ElfW(Sym) *symtab, char *strtab, ELF_RELOC *rpnt)
+{
+	if (!_dl_debug_reloc)
+		return;
+
+	if (_dl_debug_symbols) {
+		_dl_dprintf(_dl_debug_file, "\n\t");
+	} else {
+		int symtab_index;
+		const char *sym;
+
+		symtab_index = ELF_R_SYM(rpnt->r_info);
+		sym = symtab_index ? strtab + symtab[symtab_index].st_name : "sym=0x0";
+
+		_dl_dprintf(_dl_debug_file, "\n%s\n\t", sym);
+	}
+
+	_dl_dprintf(_dl_debug_file, "%s\toffset=%x",
+		_dl_reltypes(ELF_R_TYPE(rpnt->r_info)),
+		rpnt->r_offset);
+#ifdef ELF_USES_RELOCA
+	_dl_dprintf(_dl_debug_file, "\taddend=%x", rpnt->r_addend);
+#endif
+	_dl_dprintf(_dl_debug_file, "\n");
+}
+
+#else
+
+#define debug_sym(symtab, strtab, symtab_index)
+#define debug_reloc(symtab, strtab, rpnt)
+
+#endif /* __SUPPORT_LD_DEBUG__ */