perfmon: python to C parser for intel CPUs

EXAMPLE:
src/plugins/perfmon/intel_json_to_c.py \
  -i skylakex_core_v1.12.json \
  -o src/plugins/perfmon/perfmon_intel_skx.c \
  -m 0x55,0 \
  -m 0x55,1 \
  -m 0x55,2 \
  -m 0x55,3

Change-Id: I16ce059e231d340ecfcb6f6638e29c5b46304683
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/src/plugins/perfmon/intel_json_to_c.py b/src/plugins/perfmon/intel_json_to_c.py
new file mode 100755
index 00000000000..6a625ac2c33
--- /dev/null
+++ b/src/plugins/perfmon/intel_json_to_c.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+
+import json, argparse
+
+p = argparse.ArgumentParser()
+
+p.add_argument('-i', '--input', action="store",
+               help="input JSON file name", required = True)
+
+p.add_argument('-o', '--output', action="store",
+               help="output C file name", required = True)
+
+p.add_argument('-m', '--model', action="append",
+               help="CPU model in format: model[,stepping0]",
+               required = True)
+
+r = p.parse_args()
+
+with open(r.input, 'r') as fp:
+    objects = json.load(fp)
+
+c = open(r.output, 'w')
+
+c.write ("""
+#include <perfmon/perfmon_intel.h>
+
+static perfmon_intel_pmc_cpu_model_t cpu_model_table[] = {
+""")
+
+for v in r.model:
+    if "," in v:
+        (m, s)  = v.split(",")
+        m = int(m, 0)
+        s = int(s, 0)
+        c.write ("  {}0x{:02X}, 0x{:02X}, 1{},\n".format("{", m, s, "}"))
+    else:
+        m = int(v, 0)
+        c.write ("  {}0x{:02X}, 0x00, 0{},\n".format("{", m, "}"))
+c.write ("""
+};
+
+static perfmon_intel_pmc_event_t event_table[] = {
+""")
+
+for obj in objects:
+    MSRIndex = obj["MSRIndex"]
+    if MSRIndex != "0":
+      continue
+
+    EventCode = obj["EventCode"]
+    UMask = obj["UMask"]
+    EventName = obj["EventName"].lower()
+    if "," in EventCode:
+        continue
+
+    c.write ("  {\n")
+    c.write ("   .event_code = {}{}{},\n".format("{", EventCode, "}"))
+    c.write ("   .umask = {},\n".format(UMask))
+    c.write ("   .event_name = \"{}\",\n".format(EventName))
+    c.write ("   },\n")
+
+
+c.write ("""  {
+   .event_name = 0,
+   },
+};
+
+PERFMON_REGISTER_INTEL_PMC (cpu_model_table, event_table);
+
+""")
+
+c.close()