1 files changed, 71 insertions, 0 deletions
diff --git a/target/xtensa/import_core.sh b/target/xtensa/import_core.sh
new file mode 100755
index 000000000..df66d0939
--- /dev/null
+++ b/target/xtensa/import_core.sh
@@ -0,0 +1,71 @@
+#! /bin/bash -e
+
+OVERLAY="$1"
+NAME="$2"
+FREQ=40000
+BASE=$(dirname "$0")
+TARGET="$BASE"/core-$NAME
+
+[ $# -ge 2 -a -f "$OVERLAY" ] || { cat <<EOF
+Usage: $0 overlay-archive-to-import core-name [frequency-in-KHz]
+    overlay-archive-to-import:  file name of xtensa-config-overlay.tar.gz
+                                to import configuration from.
+    core-name:                  QEMU name of the imported core. Must be valid
+                                C identifier.
+    frequency-in-KHz:           core frequency (40MHz if not specified).
+EOF
+exit
+}
+
+[ $# -ge 3 ] && FREQ="$3"
+mkdir -p "$TARGET"
+tar -xf "$OVERLAY" -C "$TARGET" --strip-components=2 \
+    xtensa/config/core-isa.h \
+    xtensa/config/core-matmap.h
+tar -xf "$OVERLAY" -O gdb/xtensa-config.c | \
+    sed -n '1,/*\//p;/XTREG/,/XTREG_END/p' > "$TARGET"/gdb-config.c.inc
+#
+# 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;/' \
+        -e 's/#include <xtensa-isa.h>/#include "xtensa-isa.h"/' \
+        -e 's/^\(xtensa_isa_internal xtensa_modules\)/static \1/' \
+    > "$TARGET"/xtensa-modules.c.inc
+
+cat <<EOF > "${TARGET}.c"
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/gdbstub.h"
+#include "qemu-common.h"
+#include "qemu/host-utils.h"
+
+#include "core-$NAME/core-isa.h"
+#include "core-$NAME/core-matmap.h"
+#include "overlay_tool.h"
+
+#define xtensa_modules xtensa_modules_$NAME
+#include "core-$NAME/xtensa-modules.c.inc"
+
+static XtensaConfig $NAME __attribute__((unused)) = {
+    .name = "$NAME",
+    .gdb_regmap = {
+        .reg = {
+#include "core-$NAME/gdb-config.c.inc"
+        }
+    },
+    .isa_internal = &xtensa_modules,
+    .clock_freq_khz = $FREQ,
+    DEFAULT_SECTIONS
+};
+
+REGISTER_CORE($NAME)
+EOF
+
+grep -qxf core-${NAME}.c "$BASE"/cores.list || \
+    echo core-${NAME}.c >> "$BASE"/cores.list