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authorgdkchan <gab.dark.100@gmail.com>2019-08-08 15:56:22 -0300
committeremmauss <emmausssss@gmail.com>2019-08-08 21:56:22 +0300
commita731ab3a2aad56e6ceb8b4e2444a61353246295c (patch)
treec7f13f51bfec6b19431e62167811ae31e9d2fea9 /ARMeilleure/Instructions/InstEmitAluHelper.cs
parent1ba58e9942e54175e3f3a0e1d57a48537f4888b1 (diff)
Add a new JIT compiler for CPU code (#693)
* Start of the ARMeilleure project * Refactoring around the old IRAdapter, now renamed to PreAllocator * Optimize the LowestBitSet method * Add CLZ support and fix CLS implementation * Add missing Equals and GetHashCode overrides on some structs, misc small tweaks * Implement the ByteSwap IR instruction, and some refactoring on the assembler * Implement the DivideUI IR instruction and fix 64-bits IDIV * Correct constant operand type on CSINC * Move division instructions implementation to InstEmitDiv * Fix destination type for the ConditionalSelect IR instruction * Implement UMULH and SMULH, with new IR instructions * Fix some issues with shift instructions * Fix constant types for BFM instructions * Fix up new tests using the new V128 struct * Update tests * Move DIV tests to a separate file * Add support for calls, and some instructions that depends on them * Start adding support for SIMD & FP types, along with some of the related ARM instructions * Fix some typos and the divide instruction with FP operands * Fix wrong method call on Clz_V * Implement ARM FP & SIMD move instructions, Saddlv_V, and misc. fixes * Implement SIMD logical instructions and more misc. fixes * Fix PSRAD x86 instruction encoding, TRN, UABD and UABDL implementations * Implement float conversion instruction, merge in LDj3SNuD fixes, and some other misc. fixes * Implement SIMD shift instruction and fix Dup_V * Add SCVTF and UCVTF (vector, fixed-point) variants to the opcode table * Fix check with tolerance on tester * Implement FP & SIMD comparison instructions, and some fixes * Update FCVT (Scalar) encoding on the table to support the Half-float variants * Support passing V128 structs, some cleanup on the register allocator, merge LDj3SNuD fixes * Use old memory access methods, made a start on SIMD memory insts support, some fixes * Fix float constant passed to functions, save and restore non-volatile XMM registers, other fixes * Fix arguments count with struct return values, other fixes * More instructions * Misc. fixes and integrate LDj3SNuD fixes * Update tests * Add a faster linear scan allocator, unwinding support on windows, and other changes * Update Ryujinx.HLE * Update Ryujinx.Graphics * Fix V128 return pointer passing, RCX is clobbered * Update Ryujinx.Tests * Update ITimeZoneService * Stop using GetFunctionPointer as that can't be called from native code, misc. fixes and tweaks * Use generic GetFunctionPointerForDelegate method and other tweaks * Some refactoring on the code generator, assert on invalid operations and use a separate enum for intrinsics * Remove some unused code on the assembler * Fix REX.W prefix regression on float conversion instructions, add some sort of profiler * Add hardware capability detection * Fix regression on Sha1h and revert Fcm** changes * Add SSE2-only paths on vector extract and insert, some refactoring on the pre-allocator * Fix silly mistake introduced on last commit on CpuId * Generate inline stack probes when the stack allocation is too large * Initial support for the System-V ABI * Support multiple destination operands * Fix SSE2 VectorInsert8 path, and other fixes * Change placement of XMM callee save and restore code to match other compilers * Rename Dest to Destination and Inst to Instruction * Fix a regression related to calls and the V128 type * Add an extra space on comments to match code style * Some refactoring * Fix vector insert FP32 SSE2 path * Port over the ARM32 instructions * Avoid memory protection races on JIT Cache * Another fix on VectorInsert FP32 (thanks to LDj3SNuD * Float operands don't need to use the same register when VEX is supported * Add a new register allocator, higher quality code for hot code (tier up), and other tweaks * Some nits, small improvements on the pre allocator * CpuThreadState is gone * Allow changing CPU emulators with a config entry * Add runtime identifiers on the ARMeilleure project * Allow switching between CPUs through a config entry (pt. 2) * Change win10-x64 to win-x64 on projects * Update the Ryujinx project to use ARMeilleure * Ensure that the selected register is valid on the hybrid allocator * Allow exiting on returns to 0 (should fix test regression) * Remove register assignments for most used variables on the hybrid allocator * Do not use fixed registers as spill temp * Add missing namespace and remove unneeded using * Address PR feedback * Fix types, etc * Enable AssumeStrictAbiCompliance by default * Ensure that Spill and Fill don't load or store any more than necessary
Diffstat (limited to 'ARMeilleure/Instructions/InstEmitAluHelper.cs')
-rw-r--r--ARMeilleure/Instructions/InstEmitAluHelper.cs351
1 files changed, 351 insertions, 0 deletions
diff --git a/ARMeilleure/Instructions/InstEmitAluHelper.cs b/ARMeilleure/Instructions/InstEmitAluHelper.cs
new file mode 100644
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+using ARMeilleure.Decoders;
+using ARMeilleure.IntermediateRepresentation;
+using ARMeilleure.State;
+using ARMeilleure.Translation;
+using System;
+
+using static ARMeilleure.Instructions.InstEmitHelper;
+using static ARMeilleure.IntermediateRepresentation.OperandHelper;
+
+namespace ARMeilleure.Instructions
+{
+ static class InstEmitAluHelper
+ {
+ public static void EmitNZFlagsCheck(ArmEmitterContext context, Operand d)
+ {
+ SetFlag(context, PState.NFlag, context.ICompareLess (d, Const(d.Type, 0)));
+ SetFlag(context, PState.ZFlag, context.ICompareEqual(d, Const(d.Type, 0)));
+ }
+
+ public static void EmitAdcsCCheck(ArmEmitterContext context, Operand n, Operand d)
+ {
+ // C = (Rd == Rn && CIn) || Rd < Rn
+ Operand cIn = GetFlag(PState.CFlag);
+
+ Operand cOut = context.BitwiseAnd(context.ICompareEqual(d, n), cIn);
+
+ cOut = context.BitwiseOr(cOut, context.ICompareLessUI(d, n));
+
+ SetFlag(context, PState.CFlag, cOut);
+ }
+
+ public static void EmitAddsCCheck(ArmEmitterContext context, Operand n, Operand d)
+ {
+ // C = Rd < Rn
+ SetFlag(context, PState.CFlag, context.ICompareLessUI(d, n));
+ }
+
+ public static void EmitAddsVCheck(ArmEmitterContext context, Operand n, Operand m, Operand d)
+ {
+ // V = (Rd ^ Rn) & ~(Rn ^ Rm) < 0
+ Operand vOut = context.BitwiseExclusiveOr(d, n);
+
+ vOut = context.BitwiseAnd(vOut, context.BitwiseNot(context.BitwiseExclusiveOr(n, m)));
+
+ vOut = context.ICompareLess(vOut, Const(vOut.Type, 0));
+
+ SetFlag(context, PState.VFlag, vOut);
+ }
+
+ public static void EmitSbcsCCheck(ArmEmitterContext context, Operand n, Operand m)
+ {
+ // C = (Rn == Rm && CIn) || Rn > Rm
+ Operand cIn = GetFlag(PState.CFlag);
+
+ Operand cOut = context.BitwiseAnd(context.ICompareEqual(n, m), cIn);
+
+ cOut = context.BitwiseOr(cOut, context.ICompareGreaterUI(n, m));
+
+ SetFlag(context, PState.CFlag, cOut);
+ }
+
+ public static void EmitSubsCCheck(ArmEmitterContext context, Operand n, Operand m)
+ {
+ // C = Rn >= Rm
+ SetFlag(context, PState.CFlag, context.ICompareGreaterOrEqualUI(n, m));
+ }
+
+ public static void EmitSubsVCheck(ArmEmitterContext context, Operand n, Operand m, Operand d)
+ {
+ // V = (Rd ^ Rn) & (Rn ^ Rm) < 0
+ Operand vOut = context.BitwiseExclusiveOr(d, n);
+
+ vOut = context.BitwiseAnd(vOut, context.BitwiseExclusiveOr(n, m));
+
+ vOut = context.ICompareLess(vOut, Const(vOut.Type, 0));
+
+ SetFlag(context, PState.VFlag, vOut);
+ }
+
+
+ public static Operand GetAluN(ArmEmitterContext context)
+ {
+ if (context.CurrOp is IOpCodeAlu op)
+ {
+ if (op.DataOp == DataOp.Logical || op is IOpCodeAluRs)
+ {
+ return GetIntOrZR(context, op.Rn);
+ }
+ else
+ {
+ return GetIntOrSP(context, op.Rn);
+ }
+ }
+ else if (context.CurrOp is IOpCode32Alu op32)
+ {
+ return GetIntA32(context, op32.Rn);
+ }
+ else
+ {
+ throw InvalidOpCodeType(context.CurrOp);
+ }
+ }
+
+ public static Operand GetAluM(ArmEmitterContext context, bool setCarry = true)
+ {
+ switch (context.CurrOp)
+ {
+ // ARM32.
+ case OpCode32AluImm op:
+ {
+ if (op.SetFlags && op.IsRotated)
+ {
+ SetFlag(context, PState.CFlag, Const((uint)op.Immediate >> 31));
+ }
+
+ return Const(op.Immediate);
+ }
+
+ case OpCode32AluRsImm op: return GetMShiftedByImmediate(context, op, setCarry);
+
+ case OpCodeT16AluImm8 op: return Const(op.Immediate);
+
+ // ARM64.
+ case IOpCodeAluImm op:
+ {
+ if (op.GetOperandType() == OperandType.I32)
+ {
+ return Const((int)op.Immediate);
+ }
+ else
+ {
+ return Const(op.Immediate);
+ }
+ }
+
+ case IOpCodeAluRs op:
+ {
+ Operand value = GetIntOrZR(context, op.Rm);
+
+ switch (op.ShiftType)
+ {
+ case ShiftType.Lsl: value = context.ShiftLeft (value, Const(op.Shift)); break;
+ case ShiftType.Lsr: value = context.ShiftRightUI(value, Const(op.Shift)); break;
+ case ShiftType.Asr: value = context.ShiftRightSI(value, Const(op.Shift)); break;
+ case ShiftType.Ror: value = context.RotateRight (value, Const(op.Shift)); break;
+ }
+
+ return value;
+ }
+
+ case IOpCodeAluRx op:
+ {
+ Operand value = GetExtendedM(context, op.Rm, op.IntType);
+
+ value = context.ShiftLeft(value, Const(op.Shift));
+
+ return value;
+ }
+
+ default: throw InvalidOpCodeType(context.CurrOp);
+ }
+ }
+
+ private static Exception InvalidOpCodeType(OpCode opCode)
+ {
+ return new InvalidOperationException($"Invalid OpCode type \"{opCode?.GetType().Name ?? "null"}\".");
+ }
+
+ // ARM32 helpers.
+ private static Operand GetMShiftedByImmediate(ArmEmitterContext context, OpCode32AluRsImm op, bool setCarry)
+ {
+ Operand m = GetIntA32(context, op.Rm);
+
+ int shift = op.Imm;
+
+ if (shift == 0)
+ {
+ switch (op.ShiftType)
+ {
+ case ShiftType.Lsr: shift = 32; break;
+ case ShiftType.Asr: shift = 32; break;
+ case ShiftType.Ror: shift = 1; break;
+ }
+ }
+
+ if (shift != 0)
+ {
+ setCarry &= op.SetFlags;
+
+ switch (op.ShiftType)
+ {
+ case ShiftType.Lsl: m = GetLslC(context, m, setCarry, shift); break;
+ case ShiftType.Lsr: m = GetLsrC(context, m, setCarry, shift); break;
+ case ShiftType.Asr: m = GetAsrC(context, m, setCarry, shift); break;
+ case ShiftType.Ror:
+ if (op.Imm != 0)
+ {
+ m = GetRorC(context, m, setCarry, shift);
+ }
+ else
+ {
+ m = GetRrxC(context, m, setCarry);
+ }
+ break;
+ }
+ }
+
+ return m;
+ }
+
+ private static Operand GetLslC(ArmEmitterContext context, Operand m, bool setCarry, int shift)
+ {
+ if ((uint)shift > 32)
+ {
+ return GetShiftByMoreThan32(context, setCarry);
+ }
+ else if (shift == 32)
+ {
+ if (setCarry)
+ {
+ SetCarryMLsb(context, m);
+ }
+
+ return Const(0);
+ }
+ else
+ {
+ if (setCarry)
+ {
+ Operand cOut = context.ShiftRightUI(m, Const(32 - shift));
+
+ cOut = context.BitwiseAnd(cOut, Const(1));
+
+ SetFlag(context, PState.CFlag, cOut);
+ }
+
+ return context.ShiftLeft(m, Const(shift));
+ }
+ }
+
+ private static Operand GetLsrC(ArmEmitterContext context, Operand m, bool setCarry, int shift)
+ {
+ if ((uint)shift > 32)
+ {
+ return GetShiftByMoreThan32(context, setCarry);
+ }
+ else if (shift == 32)
+ {
+ if (setCarry)
+ {
+ SetCarryMMsb(context, m);
+ }
+
+ return Const(0);
+ }
+ else
+ {
+ if (setCarry)
+ {
+ SetCarryMShrOut(context, m, shift);
+ }
+
+ return context.ShiftRightUI(m, Const(shift));
+ }
+ }
+
+ private static Operand GetShiftByMoreThan32(ArmEmitterContext context, bool setCarry)
+ {
+ if (setCarry)
+ {
+ SetFlag(context, PState.CFlag, Const(0));;
+ }
+
+ return Const(0);
+ }
+
+ private static Operand GetAsrC(ArmEmitterContext context, Operand m, bool setCarry, int shift)
+ {
+ if ((uint)shift >= 32)
+ {
+ m = context.ShiftRightSI(m, Const(31));
+
+ if (setCarry)
+ {
+ SetCarryMLsb(context, m);
+ }
+
+ return m;
+ }
+ else
+ {
+ if (setCarry)
+ {
+ SetCarryMShrOut(context, m, shift);
+ }
+
+ return context.ShiftRightSI(m, Const(shift));
+ }
+ }
+
+ private static Operand GetRorC(ArmEmitterContext context, Operand m, bool setCarry, int shift)
+ {
+ shift &= 0x1f;
+
+ m = context.RotateRight(m, Const(shift));
+
+ if (setCarry)
+ {
+ SetCarryMMsb(context, m);
+ }
+
+ return m;
+ }
+
+ private static Operand GetRrxC(ArmEmitterContext context, Operand m, bool setCarry)
+ {
+ // Rotate right by 1 with carry.
+ Operand cIn = context.Copy(GetFlag(PState.CFlag));
+
+ if (setCarry)
+ {
+ SetCarryMLsb(context, m);
+ }
+
+ m = context.ShiftRightUI(m, Const(1));
+
+ m = context.BitwiseOr(m, context.ShiftLeft(cIn, Const(31)));
+
+ return m;
+ }
+
+ private static void SetCarryMLsb(ArmEmitterContext context, Operand m)
+ {
+ SetFlag(context, PState.CFlag, context.BitwiseAnd(m, Const(1)));
+ }
+
+ private static void SetCarryMMsb(ArmEmitterContext context, Operand m)
+ {
+ SetFlag(context, PState.CFlag, context.ShiftRightUI(m, Const(31)));
+ }
+
+ private static void SetCarryMShrOut(ArmEmitterContext context, Operand m, int shift)
+ {
+ Operand cOut = context.ShiftRightUI(m, Const(shift - 1));
+
+ cOut = context.BitwiseAnd(cOut, Const(1));
+
+ SetFlag(context, PState.CFlag, cOut);
+ }
+ }
+}
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