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arm_gicv3: Add assert()s to tell Coverity that offsets are aligned

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Coverity complains that the GICR_IPRIORITYR case in gicv3_readl()
can overflow an array, because it doesn't know that the offsets
passed to that function must be word aligned. Add some assert()s
which hopefully tell Coverity that this isn't possible.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1468261372-17508-1-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2016-07-11 19:22:52 +01:00
parent ff9d3e9cd9
commit acd8279621
1 changed files with 4 additions and 0 deletions
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4
hw/intc/arm_gicv3_redist.c
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@ -420,6 +420,8 @@ MemTxResult gicv3_redist_read(void *opaque, hwaddr offset, uint64_t *data,
MemTxResult r;
int cpuidx;
assert((offset & (size - 1)) == 0);
/* This region covers all the redistributor pages; there are
* (for GICv3) two 64K pages per CPU. At the moment they are
* all contiguous (ie in this one region), though we might later
@ -468,6 +470,8 @@ MemTxResult gicv3_redist_write(void *opaque, hwaddr offset, uint64_t data,
MemTxResult r;
int cpuidx;
assert((offset & (size - 1)) == 0);
/* This region covers all the redistributor pages; there are
* (for GICv3) two 64K pages per CPU. At the moment they are
* all contiguous (ie in this one region), though we might later