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

["ashi08104 at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

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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