This is an automated email from Gerrit.
"Richard Allen <rsa...@gmail.com>" just uploaded a new patch set to Gerrit,
which you can find at https://review.openocd.org/c/openocd/+/8602
-- gerrit
commit 508a9276380cdee3e363c8fd1565862a593fde9f
Author: Richard Allen <rsa...@rsaxvc.net>
Date: Fri Nov 29 11:39:34 2024 -0600
tools: Add gmon analyzer
A simple utility to parse a gmon file and generate a text report.
Change-Id: I38276dd1be012ce5781b1364b7cbb08c32a1a2a2
Signed-off-by: Richard Allen <rsa...@gmail.com>
diff --git a/tools/scripts/gmon_parse.py b/tools/scripts/gmon_parse.py
new file mode 100755
index 0000000000..56fd5c326f
--- /dev/null
+++ b/tools/scripts/gmon_parse.py
@@ -0,0 +1,83 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+import argparse
+import sys
+
+parser = argparse.ArgumentParser()
+parser.add_argument('inputFiles', nargs='+', type=argparse.FileType('rb'))
+parser.set_defaults(PSZ=4, baz='badger')
+parser.add_argument('--32', dest='PSZ', action='store_const', const=4,
help="32-bit pointers")
+parser.add_argument('--64', dest='PSZ', action='store_const', const=8,
help="64-bit pointers")
+args = parser.parse_args()
+print(args)
+
+#These values from gmon_out.h
+GMON_TAG_TIME_HIST = 0
+GMON_TAG_CG_ARC = 1
+GMON_TAG_BB_COUNT = 2
+
+SIZEOF_POINTER = args.PSZ
+print(SIZEOF_POINTER)
+BYTEORDER = 'big'
+
+
+for f in args.inputFiles:
+ nHist = 0
+ nArcs = 0
+ nBBs = 0
+
+ cookie = f.read(4)
+ if cookie != b"gmon":
+ print("Unexpected gmon.out cookie:", cookie)
+ sys.exit(1)
+ version = f.read(4)
+ if int.from_bytes(version, byteorder='big') == 1:
+ BYTEORDER = 'big'
+ elif int.from_bytes(version, byteorder='little') == 1:
+ BYTEORDER = 'little'
+ print("ByteOrder:", BYTEORDER)
+ print("Version:", int.from_bytes(version, byteorder=BYTEORDER))
+ spare = f.read(3 * 4)
+ while (header := f.read(1)):
+ header = header[0]
+ if header == GMON_TAG_TIME_HIST:
+ print("Histogram")
+ nHist += 1
+ low_pc = int.from_bytes(f.read(SIZEOF_POINTER),
BYTEORDER)
+ high_pc = int.from_bytes(f.read(SIZEOF_POINTER),
BYTEORDER)
+ hist_size = int.from_bytes(f.read(4), BYTEORDER)
+ prof_rate = int.from_bytes(f.read(4), BYTEORDER)
+ dimen = f.read(15)
+ dimen_abbrev = f.read(1)
+ print("\tdimen:", dimen)
+ print("\thist_size:", hist_size)
+ print("\tprof_rate:", prof_rate)
+ for hist in range(hist_size):
+ sample = f.read(2)
+ if len(sample) != 2:
+ print("unable to read samples, giving
up")
+ sys.exit(2)
+ sample = int.from_bytes(sample, BYTEORDER)
+ print("\t\t",sample)
+ elif header == GMON_TAG_CG_ARC:
+ from_pc = int.from_bytes(f.read(SIZEOF_POINTER),
BYTEORDER)
+ self_pc = int.from_bytes(f.read(SIZEOF_POINTER),
BYTEORDER)
+ count = int.from_bytes(f.read(4), BYTEORDER)
+ print("Arc", from_pc, self_pc, count)
+ nArcs += 1
+ elif header == GMON_TAG_BB_COUNT:
+ print("BasicBlock")
+ bb_count = int.from_bytes(f.read(SIZEOF_POINTER),
BYTEORDER)
+ print("\tcount=",bb_count)
+ for bb in range(bb_count):
+ pc = f.read(SIZEOF_POINTER)
+ count = f.read(SIZEOF_POINTER)
+ if len(pc) != SIZEOF_POINTER or len(count) !=
SIZEOF_POINTER:
+ print("unable to read samples, giving
up")
+ sys.exit(2)
+ nBBs += bb_count
+ else:
+ print("Unknown header byte:",header,"giving up")
+ sys.exit(1)
+
+ print("Processed", nHist, "histograms,", nArcs, "arcs,", nBBs,
"basic-blocks")
--
