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tests/JitX64: Add tests for testing data processing instructions with Rd=R15
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@ -3888,6 +3888,8 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
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LOAD_NZCVT;
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DISPATCH:
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{
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if (num_instrs >= cpu->NumInstrsToExecute) goto END;
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if (!cpu->NirqSig) {
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if (!(cpu->Cpsr & 0x80)) {
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goto END;
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@ -49,10 +49,14 @@ void JitX64::CompileDataProcessingHelper_Reverse(ArmReg Rn_index, ArmReg Rd_inde
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body(tmp);
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// TODO: Efficiency: Could implement this as a register rebind instead of needing to MOV.
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reg_alloc.LockAndDirtyArm(Rd_index);
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code->MOV(32, reg_alloc.ArmR(Rd_index), R(tmp));
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reg_alloc.UnlockArm(Rd_index);
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if (Rd_index != 15) {
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// TODO: Efficiency: Could implement this as a register rebind instead of needing to MOV.
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reg_alloc.LockAndDirtyArm(Rd_index);
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code->MOV(32, reg_alloc.ArmR(Rd_index), R(tmp));
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reg_alloc.UnlockArm(Rd_index);
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} else {
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code->MOV(32, MJitStateArmPC(), R(tmp));
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}
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reg_alloc.UnlockTemp(tmp);
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}
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@ -61,7 +61,7 @@ private:
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ArmReg arm_reg = -1; ///< Only holds a valid value when state == DirtyArmReg / CleanArmReg
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};
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std::array<ArmState, 15> arm_gpr;
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std::array<ArmState, 16> arm_gpr;
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std::array<X64State, 16> x64_gpr;
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Gen::XEmitter* code = nullptr;
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@ -3,6 +3,7 @@
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// Refer to the license.txt file included.
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#include <cstdio>
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#include <cstring>
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#include <random>
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#include <catch.hpp>
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@ -217,6 +218,34 @@ TEST_CASE("Fuzz ARM data processing instructions", "[JitX64]") {
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return instructions[inst_index].first | (assemble_randoms & (~instructions[inst_index].second));
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};
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FuzzJit(5, 10000, instruction_select_without_R15);
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FuzzJit(1024, 500, instruction_select_without_R15);
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SECTION("short blocks") {
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FuzzJit(5, 5000, instruction_select_without_R15);
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}
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SECTION("long blocks") {
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FuzzJit(1024, 200, instruction_select_without_R15);
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}
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auto instruction_select_only_R15 = [&]() -> u32 {
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size_t inst_index = RandInt(0, instructions.size() - 1);
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u32 cond = 0xE;
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// Have a one-in-twenty-five chance of actually having a cond.
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if (RandInt(1, 25) == 1) {
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cond = RandInt(0x0, 0xD);
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}
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u32 Rn = RandInt(0, 15);
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u32 Rd = 15;
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u32 S = 0;
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u32 shifter_operand = RandInt(0, 0xFFF);
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u32 assemble_randoms = (shifter_operand << 0) | (Rd << 12) | (Rn << 16) | (S << 20) | (cond << 28);
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return instructions[inst_index].first | (assemble_randoms & (~instructions[inst_index].second));
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};
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SECTION("R15") {
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FuzzJit(1, 10000, instruction_select_only_R15);
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}
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}
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