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target/arm: Add gen_mte_check1

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Replace existing uses of check_data_tbi in translate-a64.c that
perform a single logical memory access.  Leave the helper blank
for now to reduce the patch size.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200626033144.790098-24-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2020-06-25 20:31:21 -07:00 • committed by Peter Maydell
parent 38659d311d
commit 0a405be2b8
5 changed files with 95 additions and 24 deletions
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8
target/arm/internals.h
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@ -1310,6 +1310,14 @@ void arm_log_exception(int idx);
#define LOG2_TAG_GRANULE 4
#define TAG_GRANULE (1 << LOG2_TAG_GRANULE)
/* Bits within a descriptor passed to the helper_mte_check* functions. */
FIELD(MTEDESC, MIDX, 0, 4)
FIELD(MTEDESC, TBI, 4, 2)
FIELD(MTEDESC, TCMA, 6, 2)
FIELD(MTEDESC, WRITE, 8, 1)
FIELD(MTEDESC, ESIZE, 9, 5)
FIELD(MTEDESC, TSIZE, 14, 10) /* mte_checkN only */
static inline int allocation_tag_from_addr(uint64_t ptr)
{
return extract64(ptr, 56, 4);