Re: [Qemu-devel] [PATCH 01/15] target-tricore: Add target stubs and qom-cpu

[Richard Henderson <rth@twiddle.net>]

On 07/07/2014 11:13 AM, Bastian Koppelmann wrote:
> +
> +    /* GPR Register */
> +    target_ulong gpr_a[16];
> +    target_ulong gpr_d[16];
> +};
> +
> +typedef struct tricore_def_t tricore_def_t;
> +
> +typedef struct CPUTRICOREState CPUTRICOREState;
> +struct CPUTRICOREState {
> +    TCState active_tc;

You'll get better code generation if you put the gprs first.  Some hosts will
need a 2 insn sequence for large offsets, and even x86 will have a code size
benefit from having offsets < 128.

Is there any real need for the active_tc thing, or did you just copy MIPS?
Personally, I dislike it, and unless you're planning on using structure
assignment to copy data around during certain context switches, please drop it.


r~