sim: enable hardware support by default

Force this on for all ports.  We have a few common models that can
be used, so make them generally available.  If the port doesn't use
any hardware (the default), then behavior is unchanged.

4 files changed, 120 insertions, 5 deletions

diff --git a/sim/riscv/ChangeLog b/sim/riscv/ChangeLog
index 90abdf9..0993913 100644
--- a/sim/riscv/ChangeLog
+++ b/sim/riscv/ChangeLog
@@ -1,3 +1,7 @@
+2021-04-26  Mike Frysinger  <vapier@gentoo.org>
+
+	* aclocal.m4, config.in, configure: Regenerate.
+
 2021-04-22  Tom Tromey  <tom@tromey.com>
 
 	* configure, config.in: Rebuild.
diff --git a/sim/riscv/aclocal.m4 b/sim/riscv/aclocal.m4
index bc1ef46..9710f3f 100644
--- a/sim/riscv/aclocal.m4
+++ b/sim/riscv/aclocal.m4
@@ -117,6 +117,7 @@ m4_include([../m4/sim_ac_option_bitsize.m4])
 m4_include([../m4/sim_ac_option_default_model.m4])
 m4_include([../m4/sim_ac_option_endian.m4])
 m4_include([../m4/sim_ac_option_environment.m4])
+m4_include([../m4/sim_ac_option_hardware.m4])
 m4_include([../m4/sim_ac_option_inline.m4])
 m4_include([../m4/sim_ac_option_warnings.m4])
 m4_include([../m4/sim_ac_output.m4])
diff --git a/sim/riscv/config.in b/sim/riscv/config.in
index 2416b7f..8d37b72 100644
--- a/sim/riscv/config.in
+++ b/sim/riscv/config.in
@@ -13,6 +13,9 @@
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #undef HAVE_DLFCN_H
 
+/* Define if dv-sockser is usable. */
+#undef HAVE_DV_SOCKSER
+
 /* Define to 1 if you have the <fcntl.h> header file. */
 #undef HAVE_FCNTL_H
 
@@ -28,6 +31,9 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
+/* Define to 1 if you have the `m' library (-lm). */
+#undef HAVE_LIBM
+
 /* Define to 1 if you have the `nsl' library (-lnsl). */
 #undef HAVE_LIBNSL
 
diff --git a/sim/riscv/configure b/sim/riscv/configure
index 29f0c4ca..96f4fff 100755
--- a/sim/riscv/configure
+++ b/sim/riscv/configure
@@ -634,9 +634,6 @@ ac_func_list=
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
 sim_reserved_bits
-sim_hw
-sim_hw_objs
-sim_hw_cflags
 sim_scache
 sim_float
 cgen_breaks
@@ -755,6 +752,9 @@ SHELL
 WERROR_CFLAGS
 WARN_CFLAGS
 sim_inline
+sim_hw
+sim_hw_objs
+sim_hw_cflags
 sim_endian
 sim_default_model
 sim_bitsize
@@ -787,6 +787,7 @@ enable_build_warnings
 enable_sim_build_warnings
 enable_sim_default_model
 enable_sim_bitsize
+enable_sim_hardware
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1449,6 +1450,8 @@ Optional Features:
   --enable-sim-default-model=model
                           Specify default model to simulate
   --enable-sim-bitsize=N  Specify target bitsize (32 or 64)
+  --enable-sim-hardware=LIST
+                          Specify the hardware to be included in the build.
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -11188,7 +11191,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11191 "configure"
+#line 11194 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11294,7 +11297,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11297 "configure"
+#line 11300 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12146,6 +12149,107 @@ fi
 
 
 
+hardware="cfi core pal glue "
+sim_hw_cflags="-DWITH_HW=1"
+sim_hw="$hardware"
+sim_hw_objs="\$(SIM_COMMON_HW_OBJS) `echo $sim_hw | sed -e 's/\([^ ][^ ]*\)/dv-\1.o/g'`"
+
+# Check whether --enable-sim-hardware was given.
+if test "${enable_sim_hardware+set}" = set; then :
+  enableval=$enable_sim_hardware;
+else
+  enable_sim_hardware="yes"
+fi
+
+case ${enable_sim_hardware} in
+  yes|no) ;;
+  ,*) hardware="${hardware} `echo ${enableval} | sed -e 's/,/ /'`";;
+  *,) hardware="`echo ${enableval} | sed -e 's/,/ /'` ${hardware}";;
+  *)  hardware="`echo ${enableval} | sed -e 's/,/ /'`"'';;
+esac
+
+if test "$enable_sim_hardware" = no; then
+  sim_hw_objs=
+  sim_hw_cflags="-DWITH_HW=0"
+  sim_hw=
+else
+  sim_hw_cflags="-DWITH_HW=1"
+  # remove duplicates
+  sim_hw=""
+  sim_hw_objs="\$(SIM_COMMON_HW_OBJS)"
+  for i in $hardware ; do
+    case " $sim_hw " in
+      *" $i "*) ;;
+      *) sim_hw="$sim_hw $i" ; sim_hw_objs="$sim_hw_objs dv-$i.o";;
+    esac
+  done
+  # mingw does not support sockser
+  case ${host} in
+    *mingw*) ;;
+    *) # TODO: We don't add dv-sockser to sim_hw as it is not a "real" device
+       # that you instatiate.  Instead, other code will call into it directly.
+       # At some point, we should convert it over.
+       sim_hw_objs="$sim_hw_objs dv-sockser.o"
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DV_SOCKSER 1
+_ACEOF
+
+       ;;
+  esac
+  if test x"$silent" != x"yes"; then
+    echo "Setting hardware to $sim_hw_cflags, $sim_hw, $sim_hw_objs"
+  fi
+    case " $hardware " in
+    *" cfi "*) { $as_echo "$as_me:${as_lineno-$LINENO}: checking for log2 in -lm" >&5
+$as_echo_n "checking for log2 in -lm... " >&6; }
+if ${ac_cv_lib_m_log2+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char log2 ();
+int
+main ()
+{
+return log2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_m_log2=yes
+else
+  ac_cv_lib_m_log2=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_log2" >&5
+$as_echo "$ac_cv_lib_m_log2" >&6; }
+if test "x$ac_cv_lib_m_log2" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
+
+  LIBS="-lm $LIBS"
+
+fi
+;;
+  esac
+fi
+
+
 cgen_breaks=""
 if grep CGEN_MAINT $srcdir/Makefile.in >/dev/null; then
 cgen_breaks="break cgen_rtx_error";