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From: "mliska at suse dot cz" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug general/29082] New: Support GNU_PROPERTY_TYPE_0 in eu-readelf -n
Date: Thu, 21 Apr 2022 19:59:45 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29082

            Bug ID: 29082
           Summary: Support GNU_PROPERTY_TYPE_0 in eu-readelf -n
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: general
          Assignee: unassigned at sourceware dot org
          Reporter: mliska at suse dot cz
                CC: elfutils-devel at sourceware dot org, mark at klomp dot=
 org
  Target Milestone: ---

Please support the following:

$ readelf -n a.o

Displaying notes found in: .note.gnu.property
  Owner                Data size        Description
  GNU                  0x00000020       NT_GNU_PROPERTY_TYPE_0
      Properties: x86 ISA used:=20
        x86 feature used: x86

$ eu-readelf -n a.o

Note section [ 4] '.note.gnu.property' of 48 bytes at offset 0x1c0:
  Owner          Data size  Type
  GNU                   32  GNU_PROPERTY_TYPE_0
    X86 0xc0010002 data: 00 00 00 00
    X86 0xc0010001 data: 01 00 00 00

So the data output can be parsed to 'x86'.

On the other hand, 'Properties: x86 feature' are printed quite fine:

$ echo '' | gcc -c -fcf-protection=3Dfull -x c - -o a.o && readelf -n a.o

Displaying notes found in: .note.gnu.property
  Owner                Data size        Description
  GNU                  0x00000010       NT_GNU_PROPERTY_TYPE_0
      Properties: x86 feature: IBT, SHSTK
  GNU                  0x00000020       NT_GNU_PROPERTY_TYPE_0
      Properties: x86 ISA used:=20
        x86 feature used: x86

$ echo '' | gcc -c -fcf-protection=3Dfull -x c - -o a.o && eu-readelf -n a.o

Note section [ 6] '.note.gnu.property' of 80 bytes at offset 0x98:
  Owner          Data size  Type
  GNU                   16  GNU_PROPERTY_TYPE_0
    X86 FEATURE_1_AND: 00000003 IBT SHSTK
  GNU                   32  GNU_PROPERTY_TYPE_0
    X86 0xc0010002 data: 00 00 00 00
    X86 0xc0010001 data: 01 00 00 00

--=20
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