[committed][gdb] Avoid warnings in cooked_{read,write}_test for m68hc11

[Tom de Vries]

On 6/7/22 10:02, Tom de Vries via Gdb-patches wrote:
> Hi,
> 
> With --enable-targets=all we have:
> ...
> $ gdb -q -batch -ex "maint selftest"
>    ...
> Running selftest regcache::cooked_read_test::m68hc11.
> warning: No frame soft register found in the symbol table.
> Stack backtrace will not work.
> Running selftest regcache::cooked_read_test::m68hc12.
> warning: No frame soft register found in the symbol table.
> Stack backtrace will not work.
> Running selftest regcache::cooked_read_test::m68hc12:HCS12.
> warning: No frame soft register found in the symbol table.
> Stack backtrace will not work.
> ...
> 
> Likewise for regcache::cooked_write_test.
> 
> The warning has no use in the selftest context.
> 
> Fix this by skipping the specific selftests.
> 
> Tested on x86_64-linux.
> 
> Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29224
> 
> Any comments?
> 

Committed.

Thanks,
- Tom

> [gdb] Avoid warnings in cooked_{read,write}_test for m68hc11
> 
> ---
>   gdb/regcache.c | 25 +++++++++++++++++++++++++
>   1 file changed, 25 insertions(+)
> 
> diff --git a/gdb/regcache.c b/gdb/regcache.c
> index 037659ef8fa..6fd4f86f4bf 100644
> --- a/gdb/regcache.c
> +++ b/gdb/regcache.c
> @@ -1812,12 +1812,34 @@ class readwrite_regcache : public regcache
>     {}
>   };
>   
> +/* Return true if regcache::cooked_{read,write}_test should be skipped for
> +   GDBARCH.  */
> +
> +static bool
> +selftest_skiparch (struct gdbarch *gdbarch)
> +{
> +  const char *name = gdbarch_bfd_arch_info (gdbarch)->printable_name;
> +
> +  /* Avoid warning:
> +       Running selftest regcache::cooked_{read,write}_test::m68hc11.
> +       warning: No frame soft register found in the symbol table.
> +       Stack backtrace will not work.
> +     We could instead capture the output and then filter out the warning, but
> +     that seems more trouble than it's worth.  */
> +  return (strcmp (name, "m68hc11") == 0
> +	  || strcmp (name, "m68hc12") == 0
> +	  || strcmp (name, "m68hc12:HCS12") == 0);
> +}
> +
>   /* Test regcache::cooked_read gets registers from raw registers and
>      memory instead of target to_{fetch,store}_registers.  */
>   
>   static void
>   cooked_read_test (struct gdbarch *gdbarch)
>   {
> +  if (selftest_skiparch (gdbarch))
> +    return;
> +
>     scoped_mock_context<target_ops_no_register> mockctx (gdbarch);
>   
>     /* Test that read one raw register from regcache_no_target will go
> @@ -1944,6 +1966,9 @@ cooked_read_test (struct gdbarch *gdbarch)
>   static void
>   cooked_write_test (struct gdbarch *gdbarch)
>   {
> +  if (selftest_skiparch (gdbarch))
> +    return;
> +
>     /* Create a mock environment.  A process_stratum target pushed.  */
>     scoped_mock_context<target_ops_no_register> ctx (gdbarch);
>     readwrite_regcache readwrite (&ctx.mock_target, gdbarch);