2007-01-13  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* gdb.base/bt-ppc.c, gdb.base/bt-ppc.exp: New files.


diff -u -rupN gdb-6.5-ppc/gdb/testsuite/gdb.base/bt-ppc.c gdb-6.5/gdb/testsuite/gdb.base/bt-ppc.c
--- gdb-6.5-ppc/gdb/testsuite/gdb.base/bt-ppc.c	1969-12-31 19:00:00.000000000 -0500
+++ gdb-6.5/gdb/testsuite/gdb.base/bt-ppc.c	2007-01-12 21:34:55.000000000 -0500
@@ -0,0 +1,41 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2007 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+ 
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include <stdlib.h>
+
+/* Force `-fpie' double jump bl->blrl.  */
+volatile int var;
+
+int func0 (void) __attribute__((__noinline__));
+int func0 (void)
+{
+  abort ();
+  return var;
+}
+
+int func1 (void) __attribute__((__noinline__));
+int func1 (void)
+{
+  return func0 () + var;
+}
+
+int main (void)
+{
+  func1 ();
+  return 0;
+}
diff -u -rupN gdb-6.5-ppc/gdb/testsuite/gdb.base/bt-ppc.exp gdb-6.5/gdb/testsuite/gdb.base/bt-ppc.exp
--- gdb-6.5-ppc/gdb/testsuite/gdb.base/bt-ppc.exp	1969-12-31 19:00:00.000000000 -0500
+++ gdb-6.5/gdb/testsuite/gdb.base/bt-ppc.exp	2007-01-12 21:27:25.000000000 -0500
@@ -0,0 +1,99 @@
+#   Copyright 2006, 2007 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+# 
+# This program 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 General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
+
+# Test multiple unwinding fixes of PPC platform.
+# As the tests are platform independent we can run it everywhere.
+
+if $tracelevel then {
+    strace $tracelevel
+}
+
+set prms_id 0
+set bug_id 0
+
+# This test uses GCC-specific syntax.
+if [get_compiler_info not-used] {
+    return -1
+}
+
+if {![test_compiler_info "gcc-*"]} {
+    return 0
+}
+
+proc do_test { opts addons } {
+    global objdir srcdir subdir gdb_prompt
+
+    set testfile "bt-ppc"
+    set srcfile ${testfile}.c
+    set binfile ${objdir}/${subdir}/${testfile}
+
+    # `additional_flags' should be last as it eats arguments till eol.
+    if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" ${binfile} executable [list $opts additional_flags=$addons]] != ""} {
+	return -1
+    }
+
+    gdb_exit
+    gdb_start
+    gdb_reinitialize_dir $srcdir/$subdir
+    gdb_load ${binfile}
+
+    # We should stop in abort(3).
+
+    gdb_run_cmd
+
+    gdb_test_multiple {} "continue to abort()" {
+	-re ".*Program received signal SIGABRT,.*$gdb_prompt $" {
+	   pass "continue to abort()"
+	}
+    }
+
+    # Check backtrace:
+    # #3  0x0804835f in func0 ()
+    # #4  0x0804836a in func1 ()
+    # #5  0x0804838c in main ()
+    # (gdb)
+    # `\\.?' prefixes are needed for ppc64 without `debug' (another bug).
+
+    set show [concat $opts $addons]
+    if [regexp {^-fno-asynchronous-unwind-tables (-fpie -pie )?-O2$} $show] {
+        # We get correct unwind but with two excessive "??" entries
+	# due to undetectable inserted alignment entry.
+	# With -fa-u-t we have correct FDE, without -O2 we have frame pointer.
+	# 	1  0x0000003acb631980 in abort () from /lib64/libc.so.6
+	# 	2  0x0000000000400489 in func0 ()
+	# 	3  0x00000000004004d0 in ?? ()
+	# 	4  0x0000000000400499 in func1 ()
+	# 	5  0x00007fffc5442410 in ?? ()
+	# 	6  0x00000000004004b9 in main ()
+        setup_xfail "x86_64-*-*"
+    }
+    gdb_test_multiple "bt" "Correct unwind for: $show" {
+	-re "\r\n#\[0-9\]\[^\r\n\]* in \\.?func0 \\(\[^\r\n\]*\r\n#\[0-9\]\[^\r\n\]* in \\.?func1 \\(\[^\r\n\]*\r\n#\[0-9\]\[^\r\n\]* in \\.?main \\(\[^\r\n\]*\r\n$gdb_prompt $" {
+	    pass "Correct unwind for: $show"
+	}
+    }
+}
+
+foreach eh_frame {{-fno-asynchronous-unwind-tables}
+		  {-fasynchronous-unwind-tables}} {
+    foreach pie {{} {-fpie -pie}} {
+	foreach optim {{} {-O2}} {
+	    foreach is_debug {{} {debug}} {
+		do_test $is_debug [concat $eh_frame $pie $optim]
+	    }
+	}
+    }
+}