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fuzz_arm: Ensure all instructions are fuzzed

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* VFP instructions were not getting fuzzed due to matching coprocessor instructions (as invalid instructions)
* Fix VPOP writeback for doubles when (imm8 & 1) == 1
* Do not accidentally fuzz unimplemented unconditional instructions
This commit is contained in:
MerryMage
2020-05-10 13:57:39 +01:00
parent 9a38c7324f
commit 6df660c889
5 changed files with 22 additions and 10 deletions
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3
tests/A32/fuzz_arm.cpp
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@@ -123,9 +123,10 @@ u32 GenRandomInst(u32 pc, bool is_last_inst) {
const size_t index = RandInt<size_t>(0, instructions.generators.size() - 1);
const u32 inst = instructions.generators[index].Generate();
if (std::any_of(instructions.invalid.begin(), instructions.invalid.end(), [inst](const auto& invalid) { return invalid.Match(inst); })) {
if ((instructions.generators[index].Mask() & 0xF0000000) == 0 && (inst & 0xF0000000) == 0xF0000000) {
continue;
}
if (ShouldTestInst(inst, pc, is_last_inst)) {
return inst;
}