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-rw-r--r--src/cpu/checker/cpu.cc10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/cpu/checker/cpu.cc b/src/cpu/checker/cpu.cc
index 61c127ec4..f91bad294 100644
--- a/src/cpu/checker/cpu.cc
+++ b/src/cpu/checker/cpu.cc
@@ -231,6 +231,7 @@ CheckerCPU::writeMem(uint8_t *data, unsigned size,
bool checked_flags = false;
bool flags_match = true;
Addr pAddr = 0x0;
+ static uint8_t zero_data[64] = {};
int fullSize = size;
@@ -304,6 +305,15 @@ CheckerCPU::writeMem(uint8_t *data, unsigned size,
unverifiedReq->getExtraData() : true;
}
+ // If the request is to ZERO a cache block, there is no data to check
+ // against, but it's all zero. We need something to compare to, so use a
+ // const set of zeros.
+ if (flags & Request::CACHE_BLOCK_ZERO) {
+ assert(!data);
+ assert(sizeof(zero_data) <= fullSize);
+ data = zero_data;
+ }
+
if (unverifiedReq && unverifiedMemData &&
memcmp(data, unverifiedMemData, fullSize) && extraData) {
warn("%lli: Store value does not match value sent to memory! "