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Our logic that dumped the flags was buggy.
For LLVM style it dumped SHF_MASKPROC/SHF_MASKOS named constants, though
they are not flags, but masks.
For GNU style it was just very inconsistent with GNU which has logic
that is not straightforward. Imagine we have sh_flags == 0x90000000.
SHF_EXCLUDE ("E") has a value of 0x80000000 and SHF_MASKPROC is 0xf0000000.
GNU readelf will not print "E" or "Ep" in this case, but will print just
"p". It only will print "E" when no other processor flag is set.
I had to investigate the GNU source to find the algorithm and now our logic should
match it.
Differential revision: https://reviews.llvm.org/D71462
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I've noticed that when we have all regular flags set, we print "WAEXMSILoGTx"
instead of "WAXMSILOGTCE" printed by GNU readelf.
It happens because:
1) We print SHF_EXCLUDE at the wrong place.
2) We do not recognize SHF_COMPRESSED, we print "x" instead of "C".
3) We print "o" instead of "O" for SHF_OS_NONCONFORMING.
This patch fixes differences and adds test cases.
Differential revision: https://reviews.llvm.org/D71418
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cleanup flags testing.
This:
1) Adds a test for testing all section flags (`section-flags.test`).
2) Renames `sec-flags.test`->`section-arch-flags.test`
and performs a clean up.
3) Removes `compression.zlib.style.elf-x86-64` binary and a test case
for SHF_COMPRESSED flag, because them are now excessive.
4) Adds missing MIPS flags and a test for SHF_ARM_PURECODE.
Differential revision: https://reviews.llvm.org/D71333
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