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Diffstat (limited to '')
| -rw-r--r-- | magic/Magdir/coverage | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/magic/Magdir/coverage b/magic/Magdir/coverage new file mode 100644 index 0000000..9f2c3dc --- /dev/null +++ b/magic/Magdir/coverage @@ -0,0 +1,91 @@ + +#------------------------------------------------------------------------------ +# $File: coverage,v 1.3 2021/02/23 00:51:10 christos Exp $ +# xoverage: file(1) magic for test coverage data + +# File formats used to store test coverage data +# 2016-05-21, Georg Sauthoff <mail@georg.so> + + +# - GCC gcno - written by GCC at compile time when compiling with +# gcc -ftest-coverage +# - GCC gcda - written by a program that was compiled with +# gcc -fprofile-arcs +# - LLVM raw profiles - generated by a program compiled with +# clang -fprofile-instr-generate -fcoverage-mapping ... +# - LLVM indexed profiles - generated by +# llvm-profdata +# - GCOV reports, i.e. the annotated source code +# - LCOV trace files, i.e. aggregated GCC profiles +# +# GCC coverage tracefiles +# .gcno file are created during compile time, +# while data collected during runtime is stored in .gcda files +# cf. gcov-io.h +# https://gcc.gnu.org/onlinedocs/gcc-5.3.0/gcc/Gcov-Data-Files.html +# Examples: +# Fedora 23/x86-64/gcc-5.3.1: 6f 6e 63 67 52 33 30 35 +# Debian 8 PPC64/gcc-4.9.2 : 67 63 6e 6f 34 30 39 2a +0 lelong 0x67636e6f GCC gcno coverage (-ftest-coverage), +>&3 byte x version %c. +>&1 byte x \b%c + +# big endian +0 belong 0x67636e6f GCC gcno coverage (-ftest-coverage), +>&0 byte x version %c. +>&2 byte x \b%c (big-endian) + +# Examples: +# Fedora 23/x86-64/gcc-5.3.1: 61 64 63 67 52 33 30 35 +# Debian 8 PPC64/gcc-4.9.2 : 67 63 64 61 34 30 39 2a +0 lelong 0x67636461 GCC gcda coverage (-fprofile-arcs), +>&3 byte x version %c. +>&1 byte x \b%c + +# big endian +0 belong 0x67636461 GCC gcda coverage (-fprofile-arcs), +>&0 byte x version %c. +>&2 byte x \b%c (big-endian) + + +# LCOV tracefiles +# cf. http://ltp.sourceforge.net/coverage/lcov/geninfo.1.php +0 string TN: +>&0 search/64 \nSF:/ LCOV coverage tracefile + + +# Coverage reports generated by gcov +# i.e. source code annotated with coverage information +0 string \x20\x20\x20\x20\x20\x20\x20\x20-:\x20\x20\x20\ 0:Source: +>&0 search/128 \x20\x20\x20\x20\x20\x20\x20\x20-:\x20\x20\x20\ 0:Graph: +>>&0 search/128 \x20\x20\x20\x20\x20\x20\x20\x20-:\x20\x20\x20\ 0:Data: GCOV coverage report + + +# LLVM coverage files + +# raw data after running a program compiled with: +# `clang -fprofile-instr-generate -fcoverage-mapping ...` +# default name: default.profraw +# magic is: \xFF lprofr \x81 +# cf. https://llvm.org/docs/doxygen/html/InstrProfData_8inc_source.html +0 lequad 0xff6c70726f667281 LLVM raw profile data, +>&0 byte x version %d + +# big endian +0 bequad 0xff6c70726f667281 LLVM raw profile data, +>&7 byte x version %d (big-endian) + + +# LLVM indexed instruction profile (as generated by llvm-profdata) +# magic is: reverse(\xFF lprofi \x81) +# cf. https://llvm.org/docs/CoverageMappingFormat.html +# https://llvm.org/docs/doxygen/html/namespacellvm_1_1IndexedInstrProf.html +# https://llvm.org/docs/CommandGuide/llvm-cov.html +# https://llvm.org/docs/CommandGuide/llvm-profdata.html +0 lequad 0x8169666f72706cff LLVM indexed profile data, +>&0 byte x version %d + +# big endian +0 bequad 0x8169666f72706cff LLVM indexed profile data, +>&7 byte x version %d (big-endian) + |