1 files changed, 79 insertions, 0 deletions
diff --git a/scripts/tracetool/format/tcg_helper_c.py b/scripts/tracetool/format/tcg_helper_c.py
new file mode 100644
index 000000000..72576e67d
--- /dev/null
+++ b/scripts/tracetool/format/tcg_helper_c.py
@@ -0,0 +1,79 @@
+# -*- coding: utf-8 -*-
+
+"""
+Generate trace/generated-helpers.c.
+"""
+
+__author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
+__copyright__  = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>"
+__license__    = "GPL version 2 or (at your option) any later version"
+
+__maintainer__ = "Stefan Hajnoczi"
+__email__      = "stefanha@redhat.com"
+
+
+from tracetool import Arguments, out
+from tracetool.transform import *
+import tracetool.vcpu
+
+
+def vcpu_transform_args(args, mode):
+    assert len(args) == 1
+    # NOTE: this name must be kept in sync with the one in "tcg_h"
+    args = Arguments([(args.types()[0], "__tcg_" + args.names()[0])])
+    if mode == "code":
+        return Arguments([
+            # Does cast from helper requirements to tracing types
+            ("CPUState *", "env_cpu(%s)" % args.names()[0]),
+        ])
+    else:
+        args = Arguments([
+            # NOTE: Current helper code uses TCGv_env (CPUArchState*)
+            ("CPUArchState *", args.names()[0]),
+        ])
+        if mode == "header":
+            return args
+        elif mode == "wrapper":
+            return args.transform(HOST_2_TCG)
+        else:
+            assert False
+
+
+def generate(events, backend, group):
+    if group == "root":
+        header = "trace/trace-root.h"
+    else:
+        header = "trace.h"
+
+    events = [e for e in events
+              if "disable" not in e.properties]
+
+    out('/* This file is autogenerated by tracetool, do not edit. */',
+        '',
+        '#include "qemu/osdep.h"',
+        '#include "cpu.h"',
+        '#include "exec/helper-proto.h"',
+        '#include "%s"' % header,
+        '',
+        )
+
+    for e in events:
+        if "tcg-exec" not in e.properties:
+            continue
+
+        e_args_api = tracetool.vcpu.transform_args(
+            "tcg_helper_c", e.original, "header").transform(
+                HOST_2_TCG_COMPAT, TCG_2_TCG_HELPER_DEF)
+        e_args_call = tracetool.vcpu.transform_args(
+            "tcg_helper_c", e, "code")
+
+        out('void %(name_tcg)s(%(args_api)s)',
+            '{',
+            # NOTE: the check was already performed at TCG-generation time
+            '    %(name)s(%(args_call)s);',
+            '}',
+            name_tcg="helper_%s_proxy" % e.api(),
+            name=e.api(e.QEMU_TRACE_NOCHECK),
+            args_api=e_args_api,
+            args_call=", ".join(e_args_call.casted()),
+            )