Add support for --enable-sim-alignment to simulator common aclocal.m4

Add support for --alignment={strict,nonstrict,forced} to simulator common
run-time options.
For v850 use, make the default NONSTRICT_ALIGNMENT.

1 files changed, 77 insertions, 41 deletions

diff --git a/sim/v850/configure b/sim/v850/configure
index f9b1629..9b8e277 100755
--- a/sim/v850/configure
+++ b/sim/v850/configure
@@ -26,6 +26,8 @@ ac_help="$ac_help
 ac_help="$ac_help
   --enable-sim-endian=endian		Specify target byte endian orientation."
 ac_help="$ac_help
+  --enable-sim-alignment=align		Specify strict,  nonstrict or forced alignment of memory accesses."
+ac_help="$ac_help
   --enable-sim-hostendain=end		Specify host byte endian orientation."
 ac_help="$ac_help
   --enable-sim-warnings=opts		Extra CFLAGS for turning on compiler warnings"
@@ -540,7 +542,7 @@ fi
 
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:544: checking how to run the C preprocessor" >&5
+echo "configure:546: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -555,13 +557,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 559 "configure"
+#line 561 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:565: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:567: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -572,13 +574,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 576 "configure"
+#line 578 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:582: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:584: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -651,7 +653,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:655: checking host system type" >&5
+echo "configure:657: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -672,7 +674,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$host" 1>&6
 
 echo $ac_n "checking target system type""... $ac_c" 1>&6
-echo "configure:676: checking target system type" >&5
+echo "configure:678: checking target system type" >&5
 
 target_alias=$target
 case "$target_alias" in
@@ -690,7 +692,7 @@ target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$target" 1>&6
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:694: checking build system type" >&5
+echo "configure:696: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -734,7 +736,7 @@ test "$program_transform_name" = "" && program_transform_name="s,x,x,"
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:738: checking for $ac_word" >&5
+echo "configure:740: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -763,7 +765,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:767: checking for $ac_word" >&5
+echo "configure:769: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -811,7 +813,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:815: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:817: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -821,11 +823,11 @@ ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS
 cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 825 "configure"
+#line 827 "configure"
 #include "confdefs.h"
 main(){return(0);}
 EOF
-if { (eval echo configure:829: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:831: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -845,12 +847,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:849: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:851: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:854: checking whether we are using GNU C" >&5
+echo "configure:856: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -859,7 +861,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:863: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:865: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -874,7 +876,7 @@ if test $ac_cv_prog_gcc = yes; then
   ac_save_CFLAGS="$CFLAGS"
   CFLAGS=
   echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:878: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:880: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -912,7 +914,7 @@ fi
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:916: checking for a BSD compatible install" >&5
+echo "configure:918: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -977,7 +979,7 @@ AR=${AR-ar}
 # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:981: checking for $ac_word" >&5
+echo "configure:983: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1011,17 +1013,17 @@ for ac_hdr in stdlib.h string.h strings.h unistd.h time.h sys/time.h sys/resourc
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1015: checking for $ac_hdr" >&5
+echo "configure:1017: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1020 "configure"
+#line 1022 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1025: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1027: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1050,12 +1052,12 @@ done
 for ac_func in getrusage time
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1054: checking for $ac_func" >&5
+echo "configure:1056: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1059 "configure"
+#line 1061 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1078,7 +1080,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1082: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1084: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1233,12 +1235,12 @@ fi
 
 
 echo $ac_n "checking return type of signal handlers""... $ac_c" 1>&6
-echo "configure:1237: checking return type of signal handlers" >&5
+echo "configure:1239: checking return type of signal handlers" >&5
 if eval "test \"`echo '$''{'ac_cv_type_signal'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1242 "configure"
+#line 1244 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <signal.h>
@@ -1255,7 +1257,7 @@ int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:1259: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1261: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_type_signal=void
 else
@@ -1327,6 +1329,39 @@ else
 fi
 
 
+wire_alignment="NONSTRICT_ALIGNMENT"
+default_alignment="NONSTRICT_ALIGNMENT"
+default_sim_alignment="-DWITH_ALIGNMENT="
+
+# Check whether --enable-sim-alignment or --disable-sim-alignment was given.
+if test "${enable_sim_alignment+set}" = set; then
+  enableval="$enable_sim_alignment"
+  case "${enableval}" in
+  strict | STRICT)       sim_alignment="-DWITH_ALIGNMENT=STRICT_ALIGNMENT";;
+  nonstrict | NONSTRICT) sim_alignment="-DWITH_ALIGNMENT=NONSTRICT_ALIGNMENT";;
+  forced | FORCED)       sim_alignment="-DWITH_ALIGNMENT=FORCED_ALIGNMENT";;
+  yes) if test x"$wire_alignment" != x; then
+	 sim_alignment="-DWITH_ALIGNMENT=${wire_alignment}"
+       else
+	 echo "No hard-wired alignment for target $target" 1>&6
+	 sim_alignment="-DWITH_ALIGNMENT=0"
+       fi;;
+  no)  if test x"$default_alignment" != x; then
+	 sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${default_alignment}"
+       else
+	 echo "No default alignment for target $target" 1>&6
+	 sim_alignment="-DWITH_DEFAULT_ALIGNMENT=0"
+       fi;;
+  *)   { echo "configure: error: "Unknown value $enableval passed to --enable-sim-alignment"" 1>&2; exit 1; }; sim_alignment="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_alignment" != x""; then
+  echo "Setting alignment flags = $sim_alignment" 6>&1
+fi
+else
+  sim_alignment="${default_sim_alignment}"
+fi
+
+
 
 # Check whether --enable-sim-hostendian or --disable-sim-hostendian was given.
 if test "${enable_sim_hostendian+set}" = set; then
@@ -1344,14 +1379,14 @@ else
   
 if test "x$cross_compiling" = "xno"; then
   echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
-echo "configure:1348: checking whether byte ordering is bigendian" >&5
+echo "configure:1383: checking whether byte ordering is bigendian" >&5
 if eval "test \"`echo '$''{'ac_cv_c_bigendian'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_bigendian=unknown
 # See if sys/param.h defines the BYTE_ORDER macro.
 cat > conftest.$ac_ext <<EOF
-#line 1355 "configure"
+#line 1390 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -1362,11 +1397,11 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:1366: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1401: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   # It does; now see whether it defined to BIG_ENDIAN or not.
 cat > conftest.$ac_ext <<EOF
-#line 1370 "configure"
+#line 1405 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -1377,7 +1412,7 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:1381: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1416: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_bigendian=yes
 else
@@ -1397,7 +1432,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1401 "configure"
+#line 1436 "configure"
 #include "confdefs.h"
 main () {
   /* Are we little or big endian?  From Harbison&Steele.  */
@@ -1410,7 +1445,7 @@ main () {
   exit (u.c[sizeof (long) - 1] == 1);
 }
 EOF
-if { (eval echo configure:1414: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1449: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_bigendian=no
 else
@@ -1483,12 +1518,12 @@ fi
 for ac_func in time chmod utime fork execve execv chown
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1487: checking for $ac_func" >&5
+echo "configure:1522: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1492 "configure"
+#line 1527 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1511,7 +1546,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1515: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1550: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1539,17 +1574,17 @@ for ac_hdr in unistd.h stdlib.h string.h strings.h utime.h time.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1543: checking for $ac_hdr" >&5
+echo "configure:1578: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1548 "configure"
+#line 1583 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1553: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1588: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1739,6 +1774,7 @@ s%@sim_stdio@%$sim_stdio%g
 s%@sim_trace@%$sim_trace%g
 s%@sim_profile@%$sim_profile%g
 s%@sim_endian@%$sim_endian%g
+s%@sim_alignment@%$sim_alignment%g
 s%@sim_hostendian@%$sim_hostendian%g
 s%@sim_warnings@%$sim_warnings%g
 s%@sim_reserved_bits@%$sim_reserved_bits%g