gecko-dev/security/nss/automation/saw/bmul.saw

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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
import "bmul.cry";
print "Loading LLVM bitcode...";
m <- llvm_load_module "../../../dist/Debug/lib/libfreeblpriv3.so.bc";
let SpecBinaryMul n = do {
x <- llvm_var "x" (llvm_int n);
y <- llvm_var "y" (llvm_int n);
llvm_ptr "r_high" (llvm_int n);
r_high <- llvm_var "*r_high" (llvm_int n);
llvm_ptr "r_low" (llvm_int n);
r_low <- llvm_var "*r_low" (llvm_int n);
let res = {{ bmul x y }};
llvm_ensure_eq "*r_high" {{ res.0 }};
llvm_ensure_eq "*r_low" {{ res.1 }};
llvm_verify_tactic abc;
};
print "Proving equality for 32-bit bmul()...";
time (llvm_verify m "bmul32" [] (SpecBinaryMul 32));