The testsuite assumes "tablet" is a known host.
Before running the testsuite, define "tablet" in /etc/hosts

--- gcc/testsuite/ada/acats/run_acats.orig	2011-08-18 12:31:35.000000000 -0500
+++ gcc/testsuite/ada/acats/run_acats	2011-08-18 12:31:35.000000000 -0500
@@ -11,7 +11,7 @@
 host_gnatchop=`which gnatchop`
 host_gnatmake=`which gnatmake`
 ROOT=`${PWDCMD-pwd}`
-BASE=`cd $ROOT/../../..; ${PWDCMD-pwd}`
+BASE=`realpath $ROOT/../../..`
 
 PATH=$BASE:$ROOT:$PATH
 ADA_INCLUDE_PATH=$BASE/ada/rts
@@ -23,12 +23,12 @@
    exit 1
 fi
 
-if [ ! -f $BASE/gnatchop ]; then
+if [ ! -f $host_gnatchop ]; then
    echo gnattools missing, exiting.
    exit 1
 fi
 
-if [ ! -f $BASE/gnatmake ]; then
+if [ ! -f $host_gnatmake ]; then
    echo gnattools missing, exiting.
    exit 1
 fi
@@ -46,8 +46,8 @@
 chmod +x host_gnatchop
 
 echo '#!/bin/sh' > host_gnatmake
-echo PATH=`dirname $host_gnatmake`:'$PATH' >> host_gnatmake
-echo unset ADA_INCLUDE_PATH ADA_OBJECTS_PATH GCC_EXEC_PREFIX >> host_gnatmake
+echo unset -v `env | sed -e "s/=.*//" -e "s/^\.//"` >> host_gnatmake 
+echo PATH=`dirname $host_gnatmake`:'/sbin:/bin:/usr/bin:/usr/sbin' >> host_gnatmake
 echo export PATH >> host_gnatmake
 echo exec gnatmake '"$@"' >> host_gnatmake
 
--- gcc/testsuite/ada/acats/run_all.sh.orig	2011-08-18 12:31:42.000000000 -0500
+++ gcc/testsuite/ada/acats/run_all.sh	2011-08-18 18:26:04.000000000 -0500
@@ -11,9 +11,14 @@
 
 gccflags="-O2"
 gnatflags="-gnatws"
+tabtarget="/data/local/testsuite"
 
 target_run () {
-  eval $EXPECT -f $testdir/run_test.exp $*
+  # Run on rooted tablet (port 22 vs port 2222)
+  BN=`basename $*`
+  $STRIP_FOR_TARGET $*
+  /usr/bin/scp -qp $* root@tablet:$tabtarget/
+  /usr/bin/ssh -q tablet $tabtarget/$BN
 }
 
 # End of customization section.
@@ -55,13 +60,9 @@
   exit 1
 fi
 
-target_gnatchop () {
-  gnatchop --GCC="$GCC_DRIVER" $*
-}
-
 target_gnatmake () {
-  echo gnatmake --GCC=\"$GCC\" $gnatflags $gccflags $* -largs $EXTERNAL_OBJECTS --GCC=\"$GCC\"
-  gnatmake --GCC="$GCC" $gnatflags $gccflags $* -largs $EXTERNAL_OBJECTS --GCC="$GCC"
+  echo gnatmake-cross --GCC=\"$GCC\" $gnatflags $gccflags $* -largs $EXTERNAL_OBJECTS --GCC=\"$GCC\"
+  gnatmake-cross --GCC="$GCC" $gnatflags $gccflags $* -largs $EXTERNAL_OBJECTS --GCC="$GCC"
 }
 
 target_gcc () {
@@ -94,8 +95,8 @@
 display `$GCC -v 2>&1`
 display host=`gcc -dumpmachine`
 display target=$target
-display `type gnatmake`
-gnatls -v >> $dir/acats.log
+display `type gnatmake-cross`
+gnatls-cross -v >> $dir/acats.log
 display ""
 
 display "		=== acats support ==="
@@ -187,7 +188,7 @@
    exit 1
 fi
 
-target_gnatchop *.adt >> $dir/acats.log 2>&1
+host_gnatchop *.adt >> $dir/acats.log 2>&1
 
 target_gnatmake -c -gnato -gnatE *.ads >> $dir/acats.log 2>&1
 target_gnatmake -c -gnato -gnatE *.adb >> $dir/acats.log 2>&1
@@ -262,7 +263,7 @@
          continue
       fi
 
-      target_gnatchop -c -w `ls ${test}*.a ${test}*.ada ${test}*.adt ${test}*.am ${test}*.dep 2> /dev/null` >> $dir/acats.log 2>&1
+      host_gnatchop -c -w `ls ${test}*.a ${test}*.ada ${test}*.adt ${test}*.am ${test}*.dep 2> /dev/null` >> $dir/acats.log 2>&1
       main=""
       find_main
       if [ -z "$main" ]; then