On 12/04/2015 07:01 AM, Alex Zuepke wrote:
> LEON3 allows the CASA instruction to be used from user space
> if the ASI is set to 0xa (user data).
>
> Signed-off-by: Alex Zuepke <a...@sysgo.de>
> ---
> target-sparc/translate.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/target-sparc/translate.c b/target-sparc/translate.c
> index 41a3319..63440dd 100644
> --- a/target-sparc/translate.c
> +++ b/target-sparc/translate.c
> @@ -5097,7 +5097,8 @@ static void disas_sparc_insn(DisasContext * dc,
> unsigned int insn)
> if (IS_IMM) {
> goto illegal_insn;
> }
> - if (!supervisor(dc)) {
> + /* LEON3 allows CASA from user space with ASI 0xa */
> + if ((GET_FIELD(insn, 19, 26) != 0xa) && !supervisor(dc))
> {
> goto priv_insn;
> }
> #endif
>
Reviewed-by: Richard Henderson <r...@twiddle.net>
This should probably be merged for 2.5.
For 2.6, I have a branch with substantial changes for the sparc backend. Part
of which totally revamps the way ASIs are handled. I believe it gets this
right. See
git://github.com/rth7680/qemu.git tgt-sparc
r~
