541daa5e6b
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
178 lines
5.3 KiB
Plaintext
178 lines
5.3 KiB
Plaintext
## Check how we dump regular ELF section flags.
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# RUN: yaml2obj %s -o %t.o
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# RUN: llvm-readobj -S %t.o | FileCheck --check-prefix=LLVM %s
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# RUN: llvm-readelf -S %t.o | FileCheck --check-prefix=GNU %s
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# LLVM: Name: allflags
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x80000FF7)
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# LLVM-NEXT: SHF_ALLOC (0x2)
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# LLVM-NEXT: SHF_COMPRESSED (0x800)
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# LLVM-NEXT: SHF_EXCLUDE (0x80000000)
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# LLVM-NEXT: SHF_EXECINSTR (0x4)
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# LLVM-NEXT: SHF_GROUP (0x200)
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# LLVM-NEXT: SHF_INFO_LINK (0x40)
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# LLVM-NEXT: SHF_LINK_ORDER (0x80)
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# LLVM-NEXT: SHF_MERGE (0x10)
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# LLVM-NEXT: SHF_OS_NONCONFORMING (0x100)
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# LLVM-NEXT: SHF_STRINGS (0x20)
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# LLVM-NEXT: SHF_TLS (0x400)
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# LLVM-NEXT: SHF_WRITE (0x1)
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# LLVM-NEXT: ]
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# LLVM: Name: noflags
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x0)
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# LLVM-NEXT: ]
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# LLVM: Name: write
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x1)
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# LLVM-NEXT: SHF_WRITE (0x1)
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# LLVM-NEXT: ]
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# LLVM: Name: alloc
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x2)
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# LLVM-NEXT: SHF_ALLOC (0x2)
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# LLVM-NEXT: ]
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# LLVM: Name: exec
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x4)
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# LLVM-NEXT: SHF_EXECINSTR (0x4)
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# LLVM-NEXT: ]
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# LLVM: Name: merge
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x10)
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# LLVM-NEXT: SHF_MERGE (0x10)
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# LLVM-NEXT: ]
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# LLVM: Name: strings
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x20)
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# LLVM-NEXT: SHF_STRINGS (0x20)
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# LLVM-NEXT: ]
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# LLVM: Name: infolink
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x40)
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# LLVM-NEXT: SHF_INFO_LINK (0x40)
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# LLVM-NEXT: ]
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# LLVM: Name: linkorder
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x80)
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# LLVM-NEXT: SHF_LINK_ORDER (0x80)
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# LLVM-NEXT: ]
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# LLVM: Name: nonconforming
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x100)
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# LLVM-NEXT: SHF_OS_NONCONFORMING (0x100)
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# LLVM-NEXT: ]
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# LLVM: Name: group
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x200)
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# LLVM-NEXT: SHF_GROUP (0x200)
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# LLVM-NEXT: ]
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# LLVM: Name: tls
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x400)
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# LLVM-NEXT: SHF_TLS (0x400)
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# LLVM-NEXT: ]
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# LLVM: Name: compressed
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x800)
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# LLVM-NEXT: SHF_COMPRESSED (0x800)
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# LLVM-NEXT: ]
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# LLVM: Name: exclude
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0x80000000)
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# LLVM-NEXT: SHF_EXCLUDE (0x80000000)
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# LLVM-NEXT: ]
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# LLVM: Name: unknown
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# LLVM-NEXT: Type: SHT_PROGBITS
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# LLVM-NEXT: Flags [ (0xF0000)
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# LLVM-NEXT: ]
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# GNU: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
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# GNU: [ 1] allflags PROGBITS 0000000000000000 000040 000000 00 WAXMSILOGTCE 0 0 0
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# GNU: [ 2] noflags PROGBITS 0000000000000000 000040 000000 00 0 0 0
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# GNU: [ 3] write PROGBITS 0000000000000000 000040 000000 00 W 0 0 0
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# GNU: [ 4] alloc PROGBITS 0000000000000000 000040 000000 00 A 0 0 0
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# GNU: [ 5] exec PROGBITS 0000000000000000 000040 000000 00 X 0 0 0
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# GNU: [ 6] merge PROGBITS 0000000000000000 000040 000000 00 M 0 0 0
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# GNU: [ 7] strings PROGBITS 0000000000000000 000040 000000 00 S 0 0 0
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# GNU: [ 8] infolink PROGBITS 0000000000000000 000040 000000 00 I 0 0 0
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# GNU: [ 9] linkorder PROGBITS 0000000000000000 000040 000000 00 L 0 0 0
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# GNU: [10] nonconforming PROGBITS 0000000000000000 000040 000000 00 O 0 0 0
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# GNU: [11] group PROGBITS 0000000000000000 000040 000000 00 G 0 0 0
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# GNU: [12] tls PROGBITS 0000000000000000 000040 000000 00 T 0 0 0
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# GNU: [13] compressed PROGBITS 0000000000000000 000040 000000 00 C 0 0 0
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# GNU: [14] exclude PROGBITS 0000000000000000 000040 000000 00 E 0 0 0
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# GNU: [15] unknown PROGBITS 0000000000000000 000040 000000 00 x 0 0 0
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_X86_64
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Flags: []
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Sections:
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- Name: allflags
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Type: SHT_PROGBITS
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Flags: [ SHF_WRITE, SHF_ALLOC, SHF_EXECINSTR, SHF_MERGE,
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SHF_STRINGS, SHF_INFO_LINK, SHF_LINK_ORDER, SHF_OS_NONCONFORMING,
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SHF_GROUP, SHF_TLS, SHF_COMPRESSED, SHF_EXCLUDE ]
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- Name: noflags
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Type: SHT_PROGBITS
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Flags: [ ]
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- Name: write
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Type: SHT_PROGBITS
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Flags: [ SHF_WRITE ]
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- Name: alloc
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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- Name: exec
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Type: SHT_PROGBITS
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Flags: [ SHF_EXECINSTR ]
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- Name: merge
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Type: SHT_PROGBITS
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Flags: [ SHF_MERGE ]
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- Name: strings
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Type: SHT_PROGBITS
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Flags: [ SHF_STRINGS ]
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- Name: infolink
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Type: SHT_PROGBITS
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Flags: [ SHF_INFO_LINK ]
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- Name: linkorder
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Type: SHT_PROGBITS
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Flags: [ SHF_LINK_ORDER ]
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- Name: nonconforming
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Type: SHT_PROGBITS
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Flags: [ SHF_OS_NONCONFORMING ]
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- Name: group
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Type: SHT_PROGBITS
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Flags: [ SHF_GROUP ]
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- Name: tls
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Type: SHT_PROGBITS
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Flags: [ SHF_TLS ]
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- Name: compressed
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Type: SHT_PROGBITS
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Flags: [ SHF_COMPRESSED ]
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- Name: exclude
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Type: SHT_PROGBITS
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Flags: [ SHF_EXCLUDE ]
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- Name: unknown
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Type: SHT_PROGBITS
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ShFlags: 0x000f0000
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