[PATCH] Fix signal handler single step test on Sparc/Linux

[David Miller <davem@davemloft.net>]

This target uses software single step, so we can't reliably step
into a signal handler.  Thus we shouldn't run tests such as
gdb.base/kill-after-signal.exp

Ok to commit?

gdb/testsuite/

2011-11-15  David S. Miller  <davem@davemloft.net>

	* lib/gdb.exp (can_single_step_to_signal_handler): Return zero when
	target is sparc*-*-linux

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 3f0bffd..5647172 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -1539,7 +1539,7 @@ 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 "tic6x-*-*"] || [istarget "sparc*-*-linux"] } {
 	return 0
     }