diff --git a/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c b/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c
new file mode 100644
index 0000000000..b53bf0d4d3
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c
@@ -0,0 +1,32 @@
+/* This test is part of GDB, the GNU debugger.
+
+ Copyright 2018 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 3 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, see . */
+
+int main (void)
+{
+ /* Set Load Stream Disable bit in DSCR. */
+ unsigned long dscr = 0x20;
+
+ /* This is the non-privileged SPR number to access DSCR,
+ available since isa 207. */
+ asm volatile ("mtspr 3,%0" : : "r" (dscr));
+
+ /* Set PPR to low priority (010 in bits 11:13, or
+ 0x0008000000000000). */
+ asm volatile ("or 1,1,1");
+ asm volatile ("nop"); // marker
+ asm volatile ("nop");
+}
diff --git a/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp b/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp
new file mode 100644
index 0000000000..14cfa344bd
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp
@@ -0,0 +1,110 @@
+# Copyright 2018 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 3 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, see .
+
+# This file is part of the gdb testsuite.
+
+# Test access to special purpose registers PPR and DSCR.
+
+if {![istarget "powerpc*-*-linux*"]} then {
+ verbose "Skipping PowerPC test for PPR and DSCR registers."
+ return
+}
+
+standard_testfile .c
+
+if {[build_executable "compile" $binfile $srcfile {debug}] == -1} {
+ return
+}
+
+proc check_register_access { regname } {
+ global gdb_prompt
+
+ set test "$regname register access"
+ gdb_test_multiple "info reg $regname" "$test" {
+ -re "Invalid register.*\r\n$gdb_prompt $" {
+ unsupported "$test"
+ return 0
+ }
+ -re "\r\n$regname.*\r\n$gdb_prompt $" {
+ pass "$test"
+ return 1
+ }
+ }
+ return 0
+}
+
+clean_restart $binfile
+
+if ![runto_main] {
+ return
+}
+
+if {![check_register_access "ppr"]} {
+ return
+}
+
+if {![check_register_access "dscr"]} {
+ return
+}
+
+# Do one pass to check if the instructions in our test programs are
+# available to this processor (e.g. mtspr 3, RS for accessing DSCR).
+proc ppr_dscr_available {} {
+ global gdb_prompt
+ global inferior_exited_re
+
+ set test "PPR/DSCR available to inferior"
+ gdb_test_multiple "continue" "" {
+ -re "Illegal instruction.*\r\n$gdb_prompt $" {
+ unsupported "$test"
+ return 0
+ }
+ -re "$inferior_exited_re normally.*$gdb_prompt $" {
+ pass "$test"
+ return 1
+ }
+ }
+ return 0
+}
+
+if {![ppr_dscr_available]} {
+ return
+}
+
+# Now do the actual test
+clean_restart $binfile
+
+runto_main
+
+set bp_line [gdb_get_line_number "marker"]
+
+gdb_breakpoint ${srcfile}:${bp_line}
+
+gdb_continue_to_breakpoint "continue to marker"
+
+# At the breakpoint the inferior should have set the
+# registers to these expected values.
+gdb_test "info reg dscr" "dscr.*0x0*20\[ \t\]+.*"
+gdb_test "info reg ppr" "ppr.*0x0*8000000000000\[ \t\]+.*"
+
+# Set Store Stream Enable in DSCR and set PPR to the medium-low
+# priority.
+gdb_test_no_output "set \$dscr = 0x8"
+gdb_test_no_output "set \$ppr = 0xC000000000000"
+
+gdb_test "stepi" "asm.*"
+
+gdb_test "info reg dscr" "dscr.*0x0*8+\[ \t\]+.*"
+gdb_test "info reg ppr" "ppr.*0x0*\[cC\]000000000000\[ \t\]+.*"