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| author | gdkchan <gab.dark.100@gmail.com> | 2019-08-08 15:56:22 -0300 |
|---|---|---|
| committer | emmauss <emmausssss@gmail.com> | 2019-08-08 21:56:22 +0300 |
| commit | a731ab3a2aad56e6ceb8b4e2444a61353246295c (patch) | |
| tree | c7f13f51bfec6b19431e62167811ae31e9d2fea9 /ARMeilleure/Instructions/InstEmitDiv.cs | |
| parent | 1ba58e9942e54175e3f3a0e1d57a48537f4888b1 (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/InstEmitDiv.cs')
| -rw-r--r-- | ARMeilleure/Instructions/InstEmitDiv.cs | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/ARMeilleure/Instructions/InstEmitDiv.cs b/ARMeilleure/Instructions/InstEmitDiv.cs new file mode 100644 index 00000000..0c21dd1b --- /dev/null +++ b/ARMeilleure/Instructions/InstEmitDiv.cs @@ -0,0 +1,67 @@ +using ARMeilleure.Decoders; +using ARMeilleure.IntermediateRepresentation; +using ARMeilleure.Translation; + +using static ARMeilleure.Instructions.InstEmitHelper; +using static ARMeilleure.IntermediateRepresentation.OperandHelper; + +namespace ARMeilleure.Instructions +{ + static partial class InstEmit + { + public static void Sdiv(ArmEmitterContext context) => EmitDiv(context, unsigned: false); + public static void Udiv(ArmEmitterContext context) => EmitDiv(context, unsigned: true); + + private static void EmitDiv(ArmEmitterContext context, bool unsigned) + { + OpCodeAluBinary op = (OpCodeAluBinary)context.CurrOp; + + // If Rm == 0, Rd = 0 (division by zero). + Operand n = GetIntOrZR(context, op.Rn); + Operand m = GetIntOrZR(context, op.Rm); + + Operand divisorIsZero = context.ICompareEqual(m, Const(m.Type, 0)); + + Operand lblBadDiv = Label(); + Operand lblEnd = Label(); + + context.BranchIfTrue(lblBadDiv, divisorIsZero); + + if (!unsigned) + { + // If Rn == INT_MIN && Rm == -1, Rd = INT_MIN (overflow). + bool is32Bits = op.RegisterSize == RegisterSize.Int32; + + Operand intMin = is32Bits ? Const(int.MinValue) : Const(long.MinValue); + Operand minus1 = is32Bits ? Const(-1) : Const(-1L); + + Operand nIsIntMin = context.ICompareEqual(n, intMin); + Operand mIsMinus1 = context.ICompareEqual(m, minus1); + + Operand lblGoodDiv = Label(); + + context.BranchIfFalse(lblGoodDiv, context.BitwiseAnd(nIsIntMin, mIsMinus1)); + + SetAluDOrZR(context, intMin); + + context.Branch(lblEnd); + + context.MarkLabel(lblGoodDiv); + } + + Operand d = unsigned + ? context.DivideUI(n, m) + : context.Divide (n, m); + + SetAluDOrZR(context, d); + + context.Branch(lblEnd); + + context.MarkLabel(lblBadDiv); + + SetAluDOrZR(context, Const(op.GetOperandType(), 0)); + + context.MarkLabel(lblEnd); + } + } +} |