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- #------------------------------------------------------------------------------
- # $File: coverage,v 1.1 2016/06/05 00:26:32 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 annoted 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. http://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. http://llvm.org/docs/CoverageMappingFormat.html
- # http://llvm.org/docs/doxygen/html/namespacellvm_1_1IndexedInstrProf.html
- # http://llvm.org/docs/CommandGuide/llvm-cov.html
- # http://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)
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