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T32: Add ASIMD instructions

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This commit is contained in:
MerryMage
2021-05-03 23:30:59 +01:00
parent d1e62b9993
commit a5a210a9a5
2 changed files with 44 additions and 0 deletions
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25
tests/A32/fuzz_arm.cpp
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@@ -164,6 +164,12 @@ std::vector<u16> GenRandomThumbInst(u32 pc, bool is_last_inst, A32::ITState it_s
#undef INST
};
const std::vector<std::tuple<std::string, const char*>> asimd_list {
#define INST(fn, name, bitstring) {#fn, bitstring},
#include "frontend/A32/decoder/asimd.inc"
#undef INST
};
std::vector<InstructionGenerator> generators;
std::vector<InstructionGenerator> invalid;
@@ -189,6 +195,8 @@ std::vector<u16> GenRandomThumbInst(u32 pc, bool is_last_inst, A32::ITState it_s
// Unicorn has incorrect implementation (incorrect rounding and unsets CPSR.T??)
"vfp_VCVT_to_fixed",
"vfp_VCVT_from_fixed",
"asimd_VRECPS", // Unicorn does not fuse the multiply and subtraction, resulting in being off by 1ULP.
"asimd_VRSQRTS", // Unicorn does not fuse the multiply and subtraction, resulting in being off by 1ULP.
};
for (const auto& [fn, bitstring] : list) {
@@ -209,6 +217,23 @@ std::vector<u16> GenRandomThumbInst(u32 pc, bool is_last_inst, A32::ITState it_s
}
generators.emplace_back(InstructionGenerator{bitstring.c_str()});
}
for (const auto& [fn, bs] : asimd_list) {
std::string bitstring = bs;
if (bitstring.substr(0, 7) == "1111001") {
const char U = bitstring[7];
bitstring.replace(0, 8, "111-1111");
bitstring[3] = U;
} else if (bitstring.substr(0, 8) == "11110100") {
bitstring.replace(0, 8, "11111001");
} else {
ASSERT_FALSE("Unhandled ASIMD instruction: {} {}", fn, bs);
}
if (std::find(do_not_test.begin(), do_not_test.end(), fn) != do_not_test.end()) {
invalid.emplace_back(InstructionGenerator{bitstring.c_str()});
continue;
}
generators.emplace_back(InstructionGenerator{bitstring.c_str()});
}
return InstructionGeneratorInfo{generators, invalid};
}();