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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Jan Kratochvil <jan.kratochvil@redhat.com>
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Date: Fri, 27 Oct 2017 21:07:50 +0200
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Subject: gdb-6.7-ppc-clobbered-registers-O2-test.patch
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;; Test PPC hiding of call-volatile parameter register.
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;;=fedoratest
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2007-11-04 Jan Kratochvil <jan.kratochvil@redhat.com>
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* gdb.arch/ppc-clobbered-registers-O2.exp: `powerpc64' changed to
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`powerpc*'.
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Testcase for:
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http://sourceware.org/ml/gdb-patches/2007-09/msg00228.html
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2007-10-21 Luis Machado <luisgpm@br.ibm.com>
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* rs6000-tdep.c (ppc_dwarf2_frame_init_reg): New function.
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* (rs6000_gdbarch_init): Install ppc_dwarf2_frame_init_reg as
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default dwarf2_frame_set_init_reg function.
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diff --git a/gdb/testsuite/gdb.arch/ppc-clobbered-registers-O2.c b/gdb/testsuite/gdb.arch/ppc-clobbered-registers-O2.c
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new file mode 100644
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--- /dev/null
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+++ b/gdb/testsuite/gdb.arch/ppc-clobbered-registers-O2.c
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@@ -0,0 +1,21 @@
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+
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+unsigned * __attribute__((noinline))
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+start_sequence (unsigned * x, unsigned * y)
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+{
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+ return (unsigned *)0xdeadbeef;
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+};
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+
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+unsigned __attribute__((noinline))
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+gen_movsd (unsigned * operand0, unsigned * operand1)
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+{
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+ return *start_sequence(operand0, operand1);
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+}
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+
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+int main(void)
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+{
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+ unsigned x, y;
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+
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+ x = 13;
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+ y = 14;
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+ return (int)gen_movsd (&x, &y);
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+}
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diff --git a/gdb/testsuite/gdb.arch/ppc-clobbered-registers-O2.exp b/gdb/testsuite/gdb.arch/ppc-clobbered-registers-O2.exp
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new file mode 100644
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--- /dev/null
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+++ b/gdb/testsuite/gdb.arch/ppc-clobbered-registers-O2.exp
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@@ -0,0 +1,54 @@
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+# Copyright 2006 Free Software Foundation, Inc.
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+#
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+#
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+# This file is part of the gdb testsuite.
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+
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+# Test displaying call clobbered registers in optimized binaries for ppc.
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+# GDB should not show incorrect values.
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+
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+if ![istarget "powerpc*-*"] then {
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+ verbose "Skipping powerpc* call clobbered registers testing."
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+ return
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+}
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+
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+set testfile "ppc-clobbered-registers-O2"
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+set srcfile ${testfile}.c
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+set binfile [standard_output_file ${testfile}]
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+set compile_flags "debug additional_flags=-O2"
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+
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+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable ${compile_flags}] != "" } {
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+ unsupported "Testcase compile failed."
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+ return -1
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+}
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+
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+gdb_exit
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+gdb_start
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+gdb_reinitialize_dir $srcdir/$subdir
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+gdb_load ${binfile}
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+
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+if ![runto_main] then {
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+ perror "Couldn't run to breakpoint"
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+ continue
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+}
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+
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+gdb_test "b start_sequence" ".*Breakpoint 2 at.*line 6.*" \
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+ "Insert breakpoint at problematic function"
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+
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+gdb_test continue ".*Breakpoint 2.*in start_sequence.*" \
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+ "Run until problematic function"
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+
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+gdb_test backtrace ".*operand0=<value optimized out>.*operand1=<value optimized out>.*" \
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+ "Check value of call clobbered registers"
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