target/xtensa: update import_core.sh script for libisa

Extract xtensa-modules.c from the overlay, fix up known issues, include
it into the core-$NAME.c.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

target/xtensa/import_core.sh

@@ -23,6 +23,17 @@ tar -xf "$OVERLAY" -C "$TARGET" --strip-components=1 \
     --xform='s/core/core-isa/' config/core.h
 tar -xf "$OVERLAY" -O gdb/xtensa-config.c | \
     sed -n '1,/*\//p;/XTREG/,/XTREG_END/p' > "$TARGET"/gdb-config.c
+#
+# Fix up known issues in the xtensa-modules.c
+#
+tar -xf "$OVERLAY" -O binutils/xtensa-modules.c | \
+    sed -e 's/\(xtensa_opcode_encode_fn.*\[\] =\)/static \1/' \
+        -e '/^int num_bypass_groups()/,/}/d' \
+        -e '/^int num_bypass_group_chunks()/,/}/d' \
+        -e '/^uint32 \*bypass_entry(int i)/,/}/d' \
+        -e '/^#include "ansidecl.h"/d' \
+        -e '/^Slot_[a-zA-Z0-9_]\+_decode (const xtensa_insnbuf insn)/,/^}/s/^  return 0;$/  return XTENSA_UNDEFINED;/' \
+    > "$TARGET"/xtensa-modules.c
 
 cat <<EOF > "${TARGET}.c"
 #include "qemu/osdep.h"
@@ -35,6 +46,9 @@ cat <<EOF > "${TARGET}.c"
 #include "core-$NAME/core-isa.h"
 #include "overlay_tool.h"
 
+#define xtensa_modules xtensa_modules_$NAME
+#include "core-$NAME/xtensa-modules.c"
+
 static XtensaConfig $NAME __attribute__((unused)) = {
     .name = "$NAME",
     .gdb_regmap = {
@@ -42,6 +56,7 @@ static XtensaConfig $NAME __attribute__((unused)) = {
 #include "core-$NAME/gdb-config.c"
         }
     },
+    .isa_internal = &xtensa_modules,
     .clock_freq_khz = $FREQ,
     DEFAULT_SECTIONS
 };