[PATCH 2/2] [gdb] Handle AT_HWCAP3/AT_HWCAP4 in default_print_auxv_entry

[Tom de Vries]

On aarch64-linux, I run into:
...
(gdb) info auxv^M
  ...
26   AT_HWCAP2            Extension of AT_HWCAP          0x181^M
29   ???                                                 0x0^M
31   AT_EXECFN            File name of executable        0xffffffffffb9 ...
  ...
28   AT_RSEQ_ALIGN        rseq allocation alignment      32^M
0    AT_NULL              End of vector                  0x0^M
(gdb) WARNING: Unrecognized tag value: 29 ... ??? ... 0x0^M
FAIL: gdb.base/auxv.exp: info auxv on live process
...

Fix this by handling AT_HWCAP3 in default_print_auxv_entry.  Likewise for
AT_HWCAP4.

Tested on aarch64-linux.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=32590
---
 gdb/auxv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gdb/auxv.c b/gdb/auxv.c
index 368e0aa2c2b..59f38d3cf49 100644
--- a/gdb/auxv.c
+++ b/gdb/auxv.c
@@ -497,6 +497,8 @@ default_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file,
 	   AUXV_FORMAT_STR);
       TAG (AT_RANDOM, _("Address of 16 random bytes"), AUXV_FORMAT_HEX);
       TAG (AT_HWCAP2, _("Extension of AT_HWCAP"), AUXV_FORMAT_HEX);
+      TAG (AT_HWCAP3, _("Extension of AT_HWCAP"), AUXV_FORMAT_HEX);
+      TAG (AT_HWCAP4, _("Extension of AT_HWCAP"), AUXV_FORMAT_HEX);
       TAG (AT_RSEQ_FEATURE_SIZE, _("rseq supported feature size"),
 	   AUXV_FORMAT_DEC);
       TAG (AT_RSEQ_ALIGN, _("rseq allocation alignment"),
-- 
2.51.0