On Tue, Jan 18, 2011 at 12:29:40AM +0100, edgar.igles...@gmail.com wrote:
> From: Edgar E. Iglesias <edgar.igles...@gmail.com>
>
> Break the TB after reading the count register. This makes it
> possible to take timer interrupts immediately after a read of
> a possibly expired timer.
>
> Signed-off-by: Edgar E. Iglesias <edgar.igles...@gmail.com>
> ---
> target-mips/translate.c | 4 +++-
> 1 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/target-mips/translate.c b/target-mips/translate.c
> index cce77be..313cc29 100644
> --- a/target-mips/translate.c
> +++ b/target-mips/translate.c
> @@ -3410,8 +3410,10 @@ static void gen_mfc0 (CPUState *env, DisasContext
> *ctx, TCGv arg, int reg, int s
> gen_helper_mfc0_count(arg);
> if (use_icount) {
> gen_io_end();
> - ctx->bstate = BS_STOP;
> }
> + /* Break the TB to be able to take timer interrupts immediately
> + after reading count. */
> + ctx->bstate = BS_STOP;
> rn = "Count";
> break;
> /* 6,7 are implementation dependent */
This looks fine, however it should probably be done the same way for
dmfc0 on 64-bit MIPS.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
aurel...@aurel32.net http://www.aurel32.net
