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A32: Implement ARM-mode SDIV/UDIV

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Now that we have Unicorn in place, we can freely implement instructions
introduced in newer versions of the ARM architecture.
This commit is contained in:
Lioncash 2019-04-20 08:06:18 -04:00 • committed by MerryMage
parent d4a531c21f
commit b2f7a0e7ba
6 changed files with 77 additions and 0 deletions
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18
tests/A32/fuzz_arm.cpp
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@ -812,6 +812,24 @@ TEST_CASE("Fuzz ARM extension instructions", "[JitX64][A32]") {
}
}
TEST_CASE("Fuzz ARM divide instructions", "[JitX64][A32]") {
const auto is_valid = [](u32 instr) {
return Bits<0, 3>(instr) != 0b1111 &&
Bits<8, 11>(instr) != 0b1111 &&
Bits<16, 19>(instr) != 0b1111;
};
const std::array instructions = {
InstructionGenerator("cccc01110001dddd1111mmmm0001nnnn", is_valid), // SDIV
InstructionGenerator("cccc01110011dddd1111mmmm0001nnnn", is_valid), // UDIV
};
FuzzJitArm(1, 1, 5000, [&instructions]() -> u32 {
return instructions[RandInt<size_t>(0, instructions.size() - 1)].Generate();
});
}
TEST_CASE("Fuzz ARM multiply instructions", "[JitX64][A32]") {
const auto validate_d_m_n = [](u32 inst) -> bool {
return Bits<16, 19>(inst) != 15 &&