Return zero in can_single_step_to_signal_handler for nios2-*-* target

nios2 uses software single step, so GDB is unable to single step to
the signal handler.  In order to reflect this, teach
can_single_step_to_signal_handler to return zero for nios2 target.

gdb/testsuite:

2014-03-27  Yao Qi  <yao@codesourcery.com>

	* lib/gdb.exp (can_single_step_to_signal_handler): Return zero
	if target is nios2-*-*.

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 45355f3..6bc1da2 100644 (file)
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2014-03-27  Yao Qi  <yao@codesourcery.com>
+
+       * lib/gdb.exp (can_single_step_to_signal_handler): Return zero
+       if target is nios2-*-*.
+
 2014-03-26  Yao Qi  <yao@codesourcery.com>
 
        * lib/gdb.exp (readline_is_used): New proc.

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 608fae0..73e935a 100644 (file)
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -1792,7 +1792,8 @@ proc can_single_step_to_signal_handler {} {
     # to determine the next instruction addresses, because start of signal
     # handler is one of them.
     if { [istarget "arm*-*-*"] || [istarget "mips*-*-*"]
-        || [istarget "tic6x-*-*"] || [istarget "sparc*-*-linux*"] } {
+        || [istarget "tic6x-*-*"] || [istarget "sparc*-*-linux*"]
+        || [istarget "nios2-*-*"] } {
        return 0
     }