Re: [PATCH] gdb: add callback defines for new ARGV handling

[Mike Frysinger <vapier@gentoo.org>]

On Mon, Jan 10, 2011 at 12:57 PM, Doug Evans wrote:
> On Thu, Jan 6, 2011 at 2:15 AM, Mike Frysinger wrote:
>> The common sim code has slightly unfinished support for these already,
>> but even arch ports are unable to handle these if the common header does
>> not define them.  This is because the generated callback header includes
>> simple common gdb/sim headers only which causes it to skip the new ARGV
>> syscalls.  Plus, it isn't like providing these in the common header will
>> break any sim targets which don't want them.
>>
>> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
>>
>> 2010-01-06  Mike Frysinger  <vapier@gentoo.org>
>>
>>        * callback.h (CB_SYS_argc, CB_SYS_argnlen, CB_SYS_argn): Define.
>> ---
>>  include/gdb/callback.h |    5 +++++
>>  1 files changed, 5 insertions(+), 0 deletions(-)
>>
>> diff --git a/include/gdb/callback.h b/include/gdb/callback.h
>> index a1f79f9..296dfc3 100644
>> --- a/include/gdb/callback.h
>> +++ b/include/gdb/callback.h
>> @@ -231,6 +231,11 @@ extern host_callback default_callback;
>>  #define CB_SYS_truncate        21
>>  #define CB_SYS_ftruncate 22
>>  #define CB_SYS_pipe    23
>> +
>> +/* New ARGV support.  */
>> +#define CB_SYS_argc    24
>> +#define CB_SYS_argnlen 25
>> +#define CB_SYS_argn    26
>>
>>  /* Struct use to pass and return information necessary to perform a
>>    system call.  */
>
> The common sim code has CB_SYS_{argv,argvlen}, but I don't see the above.
> Where do they come from?

pretty much all the callback "syscalls" that the sim handles are
because of newlib/libgloss
-mike