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| author | KONRAD Frederic <frederic.konrad@adacore.com> | 2018-03-02 10:59:25 +0100 |
|---|---|---|
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2018-03-08 07:22:03 +0000 |
| commit | 6e10f37c86068e35151f982c976a85f1bec07ef2 (patch) | |
| tree | 1a57f740bc3840e1cb43455c4663bf95cd2d3fdd | |
| parent | 12850b1bb31876fc7f6382ebffe137357b42e26e (diff) | |
| download | qemu-6e10f37c86068e35151f982c976a85f1bec07ef2.tar.gz | |
sparc: fix leon3 casa instruction when MMU is disabled
Since the commit af7a06bac7d3abb2da48ef3277d2a415772d2ae8:
`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: KONRAD Frederic <frederic.konrad@adacore.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
| -rw-r--r-- | target/sparc/translate.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/target/sparc/translate.c b/target/sparc/translate.c index 71e0853e43..5aa367a182 100644 --- a/target/sparc/translate.c +++ b/target/sparc/translate.c @@ -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; |