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[Bug binutils/21231] New: readelf fails to dump NT_GNU_PROPERTY_TYPE_0 n


From: hjl.tools at gmail dot com
Subject: [Bug binutils/21231] New: readelf fails to dump NT_GNU_PROPERTY_TYPE_0 note
Date: Tue, 07 Mar 2017 19:10:53 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=21231

            Bug ID: 21231
           Summary: readelf fails to dump NT_GNU_PROPERTY_TYPE_0 note
           Product: binutils
           Version: 2.29 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

address@hidden property-1]$ cat i.S
#ifndef NT_GNU_PROPERTY_TYPE_0
# define NT_GNU_PROPERTY_TYPE_0 5
#endif

#ifndef GNU_PROPERTY_STACK_SIZE
# define GNU_PROPERTY_STACK_SIZE 1
#endif

#ifndef GNU_PROPERTY_NO_COPY_ON_PROTECTED
# define GNU_PROPERTY_NO_COPY_ON_PROTECTED 2
#endif

#ifndef GNU_PROPERTY_X86_ISA_1_USED
# define GNU_PROPERTY_X86_ISA_1_USED 0xc0000000
#endif

#ifndef GNU_PROPERTY_X86_ISA_1_NEEDED
# define GNU_PROPERTY_X86_ISA_1_NEEDED 0xc0000001
#endif

        .section ".note.gnu.property", "a"
#if __SIZEOF_PTRDIFF_T__  == 8
        .p2align 3
#elif __SIZEOF_PTRDIFF_T__  == 4
        .p2align 2
#else
# error Unsupported pointer size!
#endif

        .long 1f - 0f           /* name length */
        .long 4f - 2f           /* data length */
        .long NT_GNU_PROPERTY_TYPE_0    /* note type */
0:      .asciz "GNU"            /* vendor name */
1:      .p2align 2
2:      .long GNU_PROPERTY_STACK_SIZE   /* pr_type.  */
        .long 9f - 3f   /* pr_datasz.  */
3:
        .dc.a 0x800000  /* Stack size.  */
9:
#if __SIZEOF_PTRDIFF_T__  == 8
        .p2align 3
#elif __SIZEOF_PTRDIFF_T__  == 4
        .p2align 2
#endif
        .long GNU_PROPERTY_NO_COPY_ON_PROTECTED /* pr_type.  */
        .long 0 /* pr_datasz.  */
#if __SIZEOF_PTRDIFF_T__  == 8
        .p2align 3
#elif __SIZEOF_PTRDIFF_T__  == 4
        .p2align 2
#endif
        .long GNU_PROPERTY_X86_ISA_1_USED /* pr_type.  */
        .long 9f - 8f   /* pr_datasz.  */
8:
        .long -1
9:
#if __SIZEOF_PTRDIFF_T__  == 8
        .p2align 3
#elif __SIZEOF_PTRDIFF_T__  == 4
        .p2align 2
#endif
        .long GNU_PROPERTY_X86_ISA_1_NEEDED /* pr_type.  */
        .long 9f - 8f   /* pr_datasz.  */
8:
        .long 0xffff
9:
#if __SIZEOF_PTRDIFF_T__  == 8
        .p2align 3
#elif __SIZEOF_PTRDIFF_T__  == 4
        .p2align 2
#endif
4:
address@hidden property-1]$ make i.o
gcc -B./  -c -o i.o i.S
address@hidden property-1]$ ./readelf -n i.o

Displaying notes found in: .note.gnu.property
  Owner                 Data size       Description
  GNU                  0x00000038       NT_GNU_PROPERTY_TYPE_0
      Properties: <unknown type 0x800000001 data: corrupt datasz: 0x800000>

address@hidden property-1]$

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