[Bug server/17296] New: gdb can't print neon register correctly on aarch64

[Bug server/17296] New: gdb can't print neon register correctly on aarch64

[ashi08104 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17296

            Bug ID: 17296
           Summary: gdb can't print neon register correctly on aarch64
           Product: gdb
           Version: 7.8
            Status: NEW
          Severity: critical
          Priority: P2
         Component: server
          Assignee: unassigned at sourceware dot org
          Reporter: ashi08104 at gmail dot com

Created attachment 7753
  --> https://sourceware.org/bugzilla/attachment.cgi?id=7753&action=edit
neon example

Hi, there:
When debugging code on aarch64, I find gdb can't print neon register correctly.
I've a simple example attached:

#define SIZE 8
int main(void)
{
  char arr[SIZE] = {0, 1, 2, 3, 4, 5, 6, 7};
  asm volatile("ld1 {v0.8b}, [%0], 8"::"r"(arr):"v0", "memory");
}

after running the 'ld1' instruction, the v0.8b value in gdb is:
  s = {4, 5, 6, 7, 0 <repeats 12 times>}
While the true value should be:
  s = {0, 1, 2, 3, 4, 5, 6, 7}

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[Bug server/17296] gdb can't print neon register correctly on aarch64

[ashi08104 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17296

--- Comment #1 from zhongwei yao <ashi08104 at gmail dot com> ---
The runtime environment: Android on aarch64. Gdbserver runs under Android.
The gdbserver is built from gdb 7.8, with following commands:
      $export CC=aarch64-linux-gnu-gcc-4.8
      $export CFLAGS=--static
      $./gdb-7.8/gdb/gdbserver/configure --target=aarch64-linux-androideabi
--host=x86-linux-androideabi
      $make

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[Bug server/17296] gdb can't print neon register correctly on aarch64

[jmgao at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17296

Josh Gao <jmgao at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jmgao at google dot com
         Resolution|---                         |DUPLICATE

--- Comment #2 from Josh Gao <jmgao at google dot com> ---
This looks like #17457

*** This bug has been marked as a duplicate of bug 17457 ***

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