Commit 6e10f37c authored by KONRAD Frederic's avatar KONRAD Frederic Committed by Mark Cave-Ayland
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sparc: fix leon3 casa instruction when MMU is disabled 



Since the commit af7a06ba:
`casa [..](10), .., ..` (and probably others alternate space instructions)
triggers a data access exception when the MMU is disabled.

When we enter get_asi(...) dc->mem_idx is set to MMU_PHYS_IDX when the MMU
is disabled. Just keep mem_idx unchanged in this case so we passthrough the
MMU when it is disabled.

Signed-off-by: default avatarKONRAD Frederic <frederic.konrad@adacore.com>
Signed-off-by: default avatarMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
parent 12850b1b

target/sparc/translate.c

+5 −0
Original line number Diff line number Diff line
@@ -2093,6 +2093,11 @@ static DisasASI get_asi(DisasContext *dc, int insn, TCGMemOp memop) 
            type = GET_ASI_BFILL;

            break;

        }



        /* MMU_PHYS_IDX is used when the MMU is disabled to passthrough the

         * permissions check in get_physical_address(..).

         */

        mem_idx = (dc->mem_idx == MMU_PHYS_IDX) ? MMU_PHYS_IDX : mem_idx;

    } else {

        gen_exception(dc, TT_PRIV_INSN);

        type = GET_ASI_EXCP;