Re: [RFA 2nd try] tell in which register a register var is loaded.

[Pierre Muller <muller at cerbere dot u-strasbg dot fr>]

At 04:37 28/11/2001 , Andrew Cagney a écrit:
>>This patch superseeds the previous one,
>>the lval_reg_frame_relative case was not handled correctly there.
>>http://sources.redhat.com/ml/gdb-patches/2001-11/msg00301.html
>>
>>Still no idea who should give an approval for this patch ?
>
>No one else did so ...
>
>>2001-11-20 Pierre Muller  <muller@ics.u-strasbg.fr>
>>     * findvar.c (locate_var_value): specify in which register a register
>>     variable is stored.
>
>Don't forget to ucase ``specify''.
>
>Hmm, can REGISTER_NAME (num) ever be invalid or is this just being careful?
>
>If the latter then can I suggest an assertion vis:
>
>         gdb_assert (REGISTER_NAME (...) != NULL
>                     && *REGISTER_NAME (...) != '\0');
>
>If the former then the test will need to be tweeked to check for both NULL and '\0'.
>
>Your choice.

Looking at different places where REGISTER_NAME is used, it seems to be 
almost always assumed that it is valid, so I will probably simply remove the check.

>I don't think the ``$'' prefix is consistent with existing code - based mainly on a quick grep that didn't reveal any code doing this.  (I don't actually have anything agains the convention though - just a separate change :-)

Look at tracepoint.c around line 2380 in function scope_info
and you will find lots of GDB code using printf_filtered("... in register $%s",REGISTER_NAME(...))

>Otherwize, yes, a much more helpful error message.



Pierre Muller
Institut Charles Sadron
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Phone : (33)-3-88-41-40-07  Fax : (33)-3-88-41-40-99