Merge GDB 7.5.1

gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.exp

-# Copyright 2011-2012 Free Software Foundation, Inc.
+# Copyright (C) 2012 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 <http://www.gnu.org/licenses/>.
 
-# Test GCC PR debug/48827 workaround in GDB.
+if ![supports_reverse] {
+    return
+}
 
-set testfile "amd64-prologue-xmm"
-set srcfile ${testfile}.s
-set csrcfile ${testfile}.c
-set binfile ${objdir}/${subdir}/${testfile}.x
 set opts {}
+standard_testfile .S
 
 if [info exists COMPILE] {
-    # make check RUNTESTFLAGS='gdb.arch/amd64-prologue-xmm.exp COMPILE=1'
-    set srcfile ${csrcfile}
-    lappend opts debug optimize=-O0
+    # make check RUNTESTFLAGS="gdb.reverse/amd64-tailcall-reverse.exp COMPILE=1"
+    standard_testfile
+    lappend opts debug optimize=-O2
 } elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
-    verbose "Skipping amd64-prologue-xmm test."
-    return 0
+    verbose "Skipping ${testfile}."
+    return
 }
 
-if {[prepare_for_testing ${testfile}.exp ${testfile} $srcfile $opts]} {
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} $opts] } {
     return -1
 }
 
 if ![runto_main] {
     return -1
 }
 
-gdb_breakpoint "func"
-gdb_breakpoint "marker"
+if [supports_process_record] {
+    gdb_test_no_output "record"
+}
 
-gdb_continue_to_breakpoint "func"
+gdb_test "next" {f \(\);} "next to f"
+gdb_test "next" {v = 3;} "next to v = 3"
 
-gdb_test "p fail" " = 0" "stopped at func"
+# FAIL was:
+# 29        g ();
+gdb_test "reverse-next" {f \(\);}