[OpenRISC] [PATCH v6 2/5] gdb: Add OpenRISC or1k and or1knd target support

[Yao Qi <qiyaoltc@gmail.com>]

Stafford Horne <shorne@gmail.com> writes:

> + at kindex target remote
> + at item target remote
> +
> +Connect to a remote OpenRISC 1000 target.  This is supported by
> + at dfn{Or1ksim}, the OpenRISC 1000 architectural simulator as well as QEMU,
> +Verilator and Icarus Verilog simulators.  @dfn{Remote serial protocol}
> +servers, such as OpenOCD, are also available to drive various hardware
> +implementations via JTAG.
> +
> +Example: @code{target remote :51000}

Do we need to document "target remote"? which is not specific to any
particular configurations.

> +
> + at kindex target sim
> + at item target sim
> +
> +Runs the builtin CPU simulator which can run very basic
> +programs but does not support most hardware functions like MMU.
> +For more complex use cases the user is advised to run an external
> +target, and connect using @samp{target remote}.
> +
> +Example: @code{target sim}
> +
> + at end table
> +
>  @node PowerPC Embedded
>  @subsection PowerPC Embedded
>  
> @@ -41088,6 +41131,7 @@ registers using the capitalization used in the description.
>  * M68K Features::
>  * NDS32 Features::
>  * Nios II Features::
> +* OpenRISC 1000 Features::
>  * PowerPC Features::
>  * S/390 and System z Features::
>  * Sparc Features::
> @@ -41374,6 +41418,32 @@ targets.  It should contain the 32 core registers (@samp{zero},
>  @samp{pc}, and the 16 control registers (@samp{status} through
>  @samp{mpuacc}).
>  
> + at node OpenRISC 1000 Features
> + at subsection Openrisc 1000 Features
> + at cindex target descriptions, OpenRISC 1000 features
> +
> +The @samp{org.gnu.gdb.or1k.group0} feature is required for OpenRISC 1000
> +targets.  It should contain the 32 general purpose registers (@samp{r0}
> +through @samp{r31}), @samp{ppc}, @samp{npc} and @samp{sr}.
> +
> +Along with the default reggroups like @samp{system} and @samp{general}
> +provided by @value{GDBN}, OpenRISC targets can use the following reggroups
> +to group their many registers:
> +
> + at smallexample
> + Group      Type
> + immu       user
> + dmmu       user
> + icache     user
> + dcache     user
> + pic        user
> + timer      user
> + power      user
> + perf       user
> + mac        user
> + debug      user
> + at end smallexample
> +

Why do you need to document the reggroups?

> +
> +extern initialize_file_ftype _initialize_or1k_tdep; /* -Wmissing-prototypes */
> +

This is no longer needed, because GDB is moved to C++.

Otherwise, the code is good to me.

-- 
Yao (齐尧)