Merge GDB 7.5.1

sim/testsuite/sim/bfin/allinsn.exp

 # Analog Devices Blackfin simulator testsuite
 
 if [istarget bfin-*-elf] {
     # all machines
     set all_machs "bfin"
 
+    # See if we have a preprocessor available.
+    if { [target_compile $srcdir/$subdir/usp.S compilercheck.x "preprocess" \
+          [list "incdir=$srcdir/$subdir"]] == "" } {
+        set has_cpp 1
+    } {
+        verbose -log "Can't execute preprocessor"
+        set has_cpp 0
+    }
+
+    # See if we have a compiler available.
+    if { [target_compile $srcdir/$subdir/argc.c compilercheck.x "executable" \
+          [list "incdir=$srcdir/$subdir" "additional_flags=-msim"]] == "" } {
+        set has_cc 1
+    } {
+        verbose -log "Can't execute C compiler"
+        set has_cc 0
+    }
+
     foreach src [lsort [glob -nocomplain $srcdir/$subdir/*.\[csS\]]] {
+        # If we don't have a compiler available, skip tests :(.
+        if { $has_cpp == 0 && [string match "*.S" $src] } {
+            untested $src
+            continue
+        }
+        if { $has_cc == 0 && [string match "*.c" $src] } {
+            untested $src
+            continue
+        }
+
         # If we're only testing specific files and this isn't one of them,
         # skip it.
         if ![runtest_file_p $runtests $src] {
             continue
         }
         run_sim_test $src $all_machs
     }
 }