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| author | Peter Maydell <peter.maydell@linaro.org> | 2019-02-01 14:55:44 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-02-01 14:55:44 +0000 |
| commit | a80c4256543987ca88407349ee012a673a10a2ae (patch) | |
| tree | 3e8a12c295cf309cde64a33fa8ea65c341531ecb /target | |
| parent | 08d5e3bde6b4ad32996bf69d93aa66ae43d3f3ff (diff) | |
| download | qemu-a80c4256543987ca88407349ee012a673a10a2ae.zip qemu-a80c4256543987ca88407349ee012a673a10a2ae.tar.gz qemu-a80c4256543987ca88407349ee012a673a10a2ae.tar.bz2 | |
target/arm/translate-a64: Don't underdecode PRFM
The PRFM prefetch insn in the load/store with imm9 encodings
requires idx field 0b00; we were underdecoding this by
only checking !is_unpriv (which is equivalent to idx != 2).
Correctly UNDEF the unallocated encodings where idx == 0b01
and 0b11 as well as 0b10.
Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-id: 20190125182626.9221-3-peter.maydell@linaro.org
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/translate-a64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index e6df303..8e08175 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -2803,7 +2803,7 @@ static void disas_ldst_reg_imm9(DisasContext *s, uint32_t insn, } else { if (size == 3 && opc == 2) { /* PRFM - prefetch */ - if (is_unpriv) { + if (idx != 0) { unallocated_encoding(s); return; } |