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Enable GCOV code coverage in samples
The samples now create two output files for each sample. A normal one as it did before and another with a _gcov.bin suffix. This latter one will record code coverage data while running under the simulator and write out the results just before it exits. This takes advantage of the newlib semihosting in pinkySim to allow the gcov instrumentation to open files on the host and write out the code coverage results. The run-gcov.sh bash script can be executed (tested on OS X only) to run arm-none-eabi-gcov over the results and extract summary and detailed code coverage results for a particular sample. The sample must be manually executed under the simulator by the user before running this script to ascertain the code coverage from that run.
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| Original file line number | Diff line number | Diff line change |
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| *_tests.exe | ||
| *_tests_gcov.exe | ||
| *_tests.txt | ||
| *_output.txt | ||
| *.o | ||
| *.d | ||
| *.a | ||
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| #! /usr/bin/env bash | ||
| # Copyright 2014 Adam Green (http://mbed.org/users/AdamGreen/) | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
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| displayUsage() { | ||
| echo Usage: run-gcov SampleName | ||
| echo Example: run-gcov FileTest | ||
| exit 1 | ||
| } | ||
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| # Check command line parameters. | ||
| if [ "$1" == "" ] ; then | ||
| displayUsage | ||
| fi | ||
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| ARM_GCOV=arm-none-eabi-gcov | ||
| SAMPLE_NAME=$1 | ||
| TEXT_OUT=${SAMPLE_NAME}_output.txt | ||
| GCOV_RESULTS=gcov/$SAMPLE_NAME | ||
| SAMPLE_OBJDIR=gcov/obj/$SAMPLE_NAME | ||
| LIBSTARTUP_OBJDIR=gcov/obj/libstartup | ||
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| # Find sample and libstartup object files. | ||
| pushd $SAMPLE_OBJDIR >/dev/null 2>&1 | ||
| SAMPLE_OBJECTS=`ls *.o` | ||
| popd >/dev/null 2>&1 | ||
| pushd $LIBSTARTUP_OBJDIR >/dev/null 2>&1 | ||
| LIBSTARTUP_OBJECTS=`ls *.o` | ||
| popd >/dev/null 2>&1 | ||
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| rm $TEXT_OUT >/dev/null 2>&1 | ||
| mkdir -p $GCOV_RESULTS >/dev/null 2>&1 | ||
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| # Iterate through each object and extract code coverage results. | ||
| for obj in $SAMPLE_OBJECTS ; do | ||
| $ARM_GCOV --object-directory=$SAMPLE_OBJDIR $obj >>$TEXT_OUT | ||
| done | ||
| for obj in $LIBSTARTUP_OBJECTS ; do | ||
| $ARM_GCOV --object-directory=$LIBSTARTUP_OBJDIR $obj >>$TEXT_OUT | ||
| done | ||
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| # Get final output. | ||
| mv $TEXT_OUT $GCOV_RESULTS | ||
| mv *.gcov $GCOV_RESULTS | ||
| ../mri/CppUTest/scripts/filterGcov.sh $GCOV_RESULTS/$TEXT_OUT /dev/null $GCOV_RESULTS/$TEXT_OUT | ||
| cat $GCOV_RESULTS/$TEXT_OUT | ||
| echo Detailed code coverage results can be found in $GCOV_RESULTS |