derek.holloway
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36 lines
841 B
Markdown
36 lines
841 B
Markdown
This directory contains formal models of Implib.so algorithm
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which should help with verification.
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# Initialization
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This is a model of Implib.so initialization logic with `-DIMPLIB_EXPORT_SHIMS`
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and is based on arch/common/init.c.tpl.
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The model is implemented in two flavors: Promela and TLA+
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(I have no idea why I didn't use PlusCal).
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To verify TLA+ model
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- download tla2tools.jar from https://github.com/tlaplus/tlaplus
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- execute
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```
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$ rm -rf states
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$ java -jar ./tla2tools.jar -workers $(nproc) Init.tla
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```
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(add `-coverage 1` for coverage stats).
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To verify Promela model
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- install spin (via `sudo apt install spin`)
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- execute
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```
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$ spin -run -ltl never_0 Init.pml
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$ spin -run -ltl Prop Init.pml
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```
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Errors can be examined via
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```
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$ spin -p -t Init.pml
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```
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TODO:
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- try other langs (Alloy, SMV, B)
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- integrate TLA model with Apalache
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