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2019 Jul 05
2
Allocating shadow tables at the bottom of memory on Linux.
.... I am curious about what the best way would
be to create a shadow table at a fixed address in low memory starting at
0x10000 and extending upwards. I am unclear about the correct approach from
looking at the DataFlowSanitizer since getOrInsertGlobal seems to be used
on a limited number of times in runModule primarily to allocate thread
local storage and I am uncertain how the code ensures that the runtime
metadata doesnt get overwritten by alloca calls for the stack.
Thanks in advance,
Carter.
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