1 files changed, 120 insertions, 0 deletions
diff --git a/scripts/modinfo-generate.py b/scripts/modinfo-generate.py
new file mode 100755
index 00000000..b1538fcc
--- /dev/null
+++ b/scripts/modinfo-generate.py
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import os
+import sys
+
+def print_array(name, values):
+    if len(values) == 0:
+        return
+    list = ", ".join(values)
+    print("    .%s = ((const char*[]){ %s, NULL })," % (name, list))
+
+def parse_line(line):
+    kind = ""
+    data = ""
+    get_kind = False
+    get_data = False
+    for item in line.split():
+        if item == "MODINFO_START":
+            get_kind = True
+            continue
+        if item.startswith("MODINFO_END"):
+            get_data = False
+            continue
+        if get_kind:
+            kind = item
+            get_kind = False
+            get_data = True
+            continue
+        if get_data:
+            data += " " + item
+            continue
+    return (kind, data)
+
+def generate(name, lines, enabled):
+    arch = ""
+    objs = []
+    deps = []
+    opts = []
+    for line in lines:
+        if line.find("MODINFO_START") != -1:
+            (kind, data) = parse_line(line)
+            if kind == 'obj':
+                objs.append(data)
+            elif kind == 'dep':
+                deps.append(data)
+            elif kind == 'opts':
+                opts.append(data)
+            elif kind == 'arch':
+                arch = data;
+            elif kind == 'kconfig':
+                # don't add a module which dependency is not enabled
+                # in kconfig
+                if data.strip() not in enabled:
+                    print("    /* module {} isn't enabled in Kconfig. */"
+                          .format(data.strip()))
+                    print("/* },{ */")
+                    return None
+            else:
+                print("unknown:", kind)
+                exit(1)
+
+    print("    .name = \"%s\"," % name)
+    if arch != "":
+        print("    .arch = %s," % arch)
+    print_array("objs", objs)
+    print_array("deps", deps)
+    print_array("opts", opts)
+    print("},{")
+    return {dep.strip('" ') for dep in deps}
+
+def print_pre():
+    print("/* generated by scripts/modinfo-generate.py */")
+    print("#include \"qemu/osdep.h\"")
+    print("#include \"qemu/module.h\"")
+    print("const QemuModinfo qemu_modinfo[] = {{")
+
+def print_post():
+    print("    /* end of list */")
+    print("}};")
+
+def main(args):
+    if len(args) < 3 or args[0] != '--devices':
+        print('Expected: modinfo-generate.py --devices '
+              'config-device.mak [modinfo files]', file=sys.stderr)
+        exit(1)
+
+    # get all devices enabled in kconfig, from *-config-device.mak
+    enabled = set()
+    with open(args[1]) as file:
+        for line in file.readlines():
+            config = line.split('=')
+            if config[1].rstrip() == 'y':
+                enabled.add(config[0][7:]) # remove CONFIG_
+
+    deps = set()
+    modules = set()
+    print_pre()
+    for modinfo in args[2:]:
+        with open(modinfo) as f:
+            lines = f.readlines()
+        print("    /* %s */" % modinfo)
+        (basename, _) = os.path.splitext(modinfo)
+        moddeps = generate(basename, lines, enabled)
+        if moddeps is not None:
+            modules.add(basename)
+            deps.update(moddeps)
+    print_post()
+
+    error = False
+    for dep in deps.difference(modules):
+        print("Dependency {} cannot be satisfied".format(dep),
+              file=sys.stderr)
+        error = True
+
+    if error:
+        exit(1)
+
+if __name__ == "__main__":
+    main(sys.argv[1:])