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Ryujinx/ARMeilleure/CodeGen/X86/Assembler.cs
FICTURE7 22b2cb39af
Reduce JIT GC allocations (#2515) 
* Turn `MemoryOperand` into a struct

* Remove `IntrinsicOperation`

* Remove `PhiNode`

* Remove `Node`

* Turn `Operand` into a struct

* Turn `Operation` into a struct

* Clean up pool management methods

* Add `Arena` allocator

* Move `OperationHelper` to `Operation.Factory`

* Move `OperandHelper` to `Operand.Factory`

* Optimize `Operation` a bit

* Fix `Arena` initialization

* Rename `NativeList<T>` to `ArenaList<T>`

* Reduce `Operand` size from 88 to 56 bytes

* Reduce `Operation` size from 56 to 40 bytes

* Add optimistic interning of Register & Constant operands

* Optimize `RegisterUsage` pass a bit

* Optimize `RemoveUnusedNodes` pass a bit

Iterating in reverse-order allows killing dependency chains in a single
pass.

* Fix PPTC symbols

* Optimize `BasicBlock` a bit

Reduce allocations from `_successor` & `DominanceFrontiers`

* Fix `Operation` resize

* Make `Arena` expandable

Change the arena allocator to be expandable by allocating in pages, with
some of them being pooled. Currently 32 pages are pooled. An LRU removal
mechanism should probably be added to it.

Apparently MHR can allocate bitmaps large enough to exceed the 16MB
limit for the type.

* Move `Arena` & `ArenaList` to `Common`

* Remove `ThreadStaticPool` & co

* Add `PhiOperation`

* Reduce `Operand` size from 56 from 48 bytes

* Add linear-probing to `Operand` intern table

* Optimize `HybridAllocator` a bit

* Add `Allocators` class

* Tune `ArenaAllocator` sizes

* Add page removal mechanism to `ArenaAllocator`

Remove pages which have not been used for more than 5s after each reset.

I am on fence if this would be better using a Gen2 callback object like
the one in System.Buffers.ArrayPool<T>, to trim the pool. Because right
now if a large translation happens, the pages will be freed only after a
reset. This reset may not happen for a while because no new translation
is hit, but the arena base sizes are rather small.

* Fix `OOM` when allocating larger than page size in `ArenaAllocator`

Tweak resizing mechanism for Operand.Uses and Assignemnts.

* Optimize `Optimizer` a bit

* Optimize `Operand.Add<T>/Remove<T>` a bit

* Clean up `PreAllocator`

* Fix phi insertion order

Reduce codegen diffs.

* Fix code alignment

* Use new heuristics for degree of parallelism

* Suppress warnings

* Address gdkchan's feedback

Renamed `GetValue()` to `GetValueUnsafe()` to make it more clear that
`Operand.Value` should usually not be modified directly.

* Add fast path to `ArenaAllocator`

* Assembly for `ArenaAllocator.Allocate(ulong)`:

  .L0:
    mov rax, [rcx+0x18]
    lea r8, [rax+rdx]
    cmp r8, [rcx+0x10]
    ja short .L2
  .L1:
    mov rdx, [rcx+8]
    add rax, [rdx+8]
    mov [rcx+0x18], r8
    ret
  .L2:
    jmp ArenaAllocator.AllocateSlow(UInt64)

  A few variable/field had to be changed to ulong so that RyuJIT avoids
  emitting zero-extends.

* Implement a new heuristic to free pooled pages.

  If an arena is used often, it is more likely that its pages will be
  needed, so the pages are kept for longer (e.g: during PPTC rebuild or
  burst sof compilations). If is not used often, then it is more likely
  that its pages will not be needed (e.g: after PPTC rebuild or bursts
  of compilations).

* Address riperiperi's feedback

* Use `EqualityComparer<T>` in `IntrusiveList<T>`

Avoids a potential GC hole in `Equals(T, T)`.
2021-08-17 15:08:34 -03:00

1482 lines
74 KiB
C#
Raw Blame History

using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Translation.PTC;
using System;
using System.Diagnostics;
using System.IO;
namespace ARMeilleure.CodeGen.X86
{
class Assembler
{
private const int BadOp = 0;
private const int OpModRMBits = 24;
private const byte RexPrefix = 0x40;
private const byte RexWPrefix = 0x48;
private const byte LockPrefix = 0xf0;
private const int MaxRegNumber = 15;
[Flags]
private enum InstructionFlags
{
None = 0,
RegOnly = 1 << 0,
Reg8Src = 1 << 1,
Reg8Dest = 1 << 2,
RexW = 1 << 3,
Vex = 1 << 4,
PrefixBit = 16,
PrefixMask = 7 << PrefixBit,
Prefix66 = 1 << PrefixBit,
PrefixF3 = 2 << PrefixBit,
PrefixF2 = 4 << PrefixBit
}
private struct InstructionInfo
{
public int OpRMR { get; }
public int OpRMImm8 { get; }
public int OpRMImm32 { get; }
public int OpRImm64 { get; }
public int OpRRM { get; }
public InstructionFlags Flags { get; }
public InstructionInfo(
int opRMR,
int opRMImm8,
int opRMImm32,
int opRImm64,
int opRRM,
InstructionFlags flags)
{
OpRMR = opRMR;
OpRMImm8 = opRMImm8;
OpRMImm32 = opRMImm32;
OpRImm64 = opRImm64;
OpRRM = opRRM;
Flags = flags;
}
}
private static InstructionInfo[] _instTable;
private Stream _stream;
private PtcInfo _ptcInfo;
private bool _ptcDisabled;
static Assembler()
{
_instTable = new InstructionInfo[(int)X86Instruction.Count];
// Name RM/R RM/I8 RM/I32 R/I64 R/RM Flags
Add(X86Instruction.Add, new InstructionInfo(0x00000001, 0x00000083, 0x00000081, BadOp, 0x00000003, InstructionFlags.None));
Add(X86Instruction.Addpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f58, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Addps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f58, InstructionFlags.Vex));
Add(X86Instruction.Addsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f58, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Addss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f58, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Aesdec, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38de, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Aesdeclast, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38df, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Aesenc, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38dc, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Aesenclast, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38dd, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Aesimc, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38db, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.And, new InstructionInfo(0x00000021, 0x04000083, 0x04000081, BadOp, 0x00000023, InstructionFlags.None));
Add(X86Instruction.Andnpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f55, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Andnps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f55, InstructionFlags.Vex));
Add(X86Instruction.Andpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f54, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Andps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f54, InstructionFlags.Vex));
Add(X86Instruction.Blendvpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3815, InstructionFlags.Prefix66));
Add(X86Instruction.Blendvps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3814, InstructionFlags.Prefix66));
Add(X86Instruction.Bsr, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fbd, InstructionFlags.None));
Add(X86Instruction.Bswap, new InstructionInfo(0x00000fc8, BadOp, BadOp, BadOp, BadOp, InstructionFlags.RegOnly));
Add(X86Instruction.Call, new InstructionInfo(0x020000ff, BadOp, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Cmovcc, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f40, InstructionFlags.None));
Add(X86Instruction.Cmp, new InstructionInfo(0x00000039, 0x07000083, 0x07000081, BadOp, 0x0000003b, InstructionFlags.None));
Add(X86Instruction.Cmppd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fc2, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Cmpps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fc2, InstructionFlags.Vex));
Add(X86Instruction.Cmpsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fc2, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Cmpss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fc2, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Cmpxchg, new InstructionInfo(0x00000fb1, BadOp, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Cmpxchg16b, new InstructionInfo(0x01000fc7, BadOp, BadOp, BadOp, BadOp, InstructionFlags.RexW));
Add(X86Instruction.Cmpxchg8, new InstructionInfo(0x00000fb0, BadOp, BadOp, BadOp, BadOp, InstructionFlags.Reg8Src));
Add(X86Instruction.Comisd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f2f, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Comiss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f2f, InstructionFlags.Vex));
Add(X86Instruction.Crc32, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38f1, InstructionFlags.PrefixF2));
Add(X86Instruction.Crc32_16, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38f1, InstructionFlags.PrefixF2 | InstructionFlags.Prefix66));
Add(X86Instruction.Crc32_8, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38f0, InstructionFlags.PrefixF2 | InstructionFlags.Reg8Src));
Add(X86Instruction.Cvtdq2pd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fe6, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Cvtdq2ps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5b, InstructionFlags.Vex));
Add(X86Instruction.Cvtpd2dq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fe6, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Cvtpd2ps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5a, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Cvtps2dq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5b, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Cvtps2pd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5a, InstructionFlags.Vex));
Add(X86Instruction.Cvtsd2si, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f2d, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Cvtsd2ss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5a, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Cvtsi2sd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f2a, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Cvtsi2ss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f2a, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Cvtss2sd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5a, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Cvtss2si, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f2d, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Div, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x060000f7, InstructionFlags.None));
Add(X86Instruction.Divpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5e, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Divps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5e, InstructionFlags.Vex));
Add(X86Instruction.Divsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5e, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Divss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5e, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Haddpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f7c, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Haddps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f7c, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Idiv, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x070000f7, InstructionFlags.None));
Add(X86Instruction.Imul, new InstructionInfo(BadOp, 0x0000006b, 0x00000069, BadOp, 0x00000faf, InstructionFlags.None));
Add(X86Instruction.Imul128, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x050000f7, InstructionFlags.None));
Add(X86Instruction.Insertps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a21, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Jmp, new InstructionInfo(0x040000ff, BadOp, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Ldmxcsr, new InstructionInfo(0x02000fae, BadOp, BadOp, BadOp, BadOp, InstructionFlags.Vex));
Add(X86Instruction.Lea, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x0000008d, InstructionFlags.None));
Add(X86Instruction.Maxpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5f, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Maxps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5f, InstructionFlags.Vex));
Add(X86Instruction.Maxsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5f, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Maxss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5f, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Minpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5d, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Minps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5d, InstructionFlags.Vex));
Add(X86Instruction.Minsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5d, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Minss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5d, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Mov, new InstructionInfo(0x00000089, BadOp, 0x000000c7, 0x000000b8, 0x0000008b, InstructionFlags.None));
Add(X86Instruction.Mov16, new InstructionInfo(0x00000089, BadOp, 0x000000c7, BadOp, 0x0000008b, InstructionFlags.Prefix66));
Add(X86Instruction.Mov8, new InstructionInfo(0x00000088, 0x000000c6, BadOp, BadOp, 0x0000008a, InstructionFlags.Reg8Src | InstructionFlags.Reg8Dest));
Add(X86Instruction.Movd, new InstructionInfo(0x00000f7e, BadOp, BadOp, BadOp, 0x00000f6e, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Movdqu, new InstructionInfo(0x00000f7f, BadOp, BadOp, BadOp, 0x00000f6f, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Movhlps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f12, InstructionFlags.Vex));
Add(X86Instruction.Movlhps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f16, InstructionFlags.Vex));
Add(X86Instruction.Movq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f7e, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Movsd, new InstructionInfo(0x00000f11, BadOp, BadOp, BadOp, 0x00000f10, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Movss, new InstructionInfo(0x00000f11, BadOp, BadOp, BadOp, 0x00000f10, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Movsx16, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fbf, InstructionFlags.None));
Add(X86Instruction.Movsx32, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000063, InstructionFlags.None));
Add(X86Instruction.Movsx8, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fbe, InstructionFlags.Reg8Src));
Add(X86Instruction.Movzx16, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fb7, InstructionFlags.None));
Add(X86Instruction.Movzx8, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fb6, InstructionFlags.Reg8Src));
Add(X86Instruction.Mul128, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x040000f7, InstructionFlags.None));
Add(X86Instruction.Mulpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f59, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Mulps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f59, InstructionFlags.Vex));
Add(X86Instruction.Mulsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f59, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Mulss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f59, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Neg, new InstructionInfo(0x030000f7, BadOp, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Not, new InstructionInfo(0x020000f7, BadOp, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Or, new InstructionInfo(0x00000009, 0x01000083, 0x01000081, BadOp, 0x0000000b, InstructionFlags.None));
Add(X86Instruction.Paddb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000ffc, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Paddd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000ffe, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Paddq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fd4, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Paddw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000ffd, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pand, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fdb, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pandn, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fdf, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pavgb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fe0, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pavgw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fe3, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pblendvb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3810, InstructionFlags.Prefix66));
Add(X86Instruction.Pclmulqdq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a44, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpeqb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f74, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpeqd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f76, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpeqq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3829, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpeqw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f75, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpgtb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f64, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpgtd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f66, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpgtq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3837, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpgtw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f65, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pextrb, new InstructionInfo(0x000f3a14, BadOp, BadOp, BadOp, BadOp, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pextrd, new InstructionInfo(0x000f3a16, BadOp, BadOp, BadOp, BadOp, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pextrq, new InstructionInfo(0x000f3a16, BadOp, BadOp, BadOp, BadOp, InstructionFlags.Vex | InstructionFlags.RexW | InstructionFlags.Prefix66));
Add(X86Instruction.Pextrw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fc5, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pinsrb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a20, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pinsrd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a22, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pinsrq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a22, InstructionFlags.Vex | InstructionFlags.RexW | InstructionFlags.Prefix66));
Add(X86Instruction.Pinsrw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fc4, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmaxsb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f383c, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmaxsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f383d, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmaxsw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fee, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmaxub, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fde, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmaxud, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f383f, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmaxuw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f383e, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pminsb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3838, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pminsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3839, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pminsw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fea, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pminub, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fda, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pminud, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f383b, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pminuw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f383a, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmovsxbw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3820, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmovsxdq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3825, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmovsxwd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3823, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmovzxbw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3830, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmovzxdq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3835, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmovzxwd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3833, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmulld, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3840, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pmullw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fd5, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pop, new InstructionInfo(0x0000008f, BadOp, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Popcnt, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fb8, InstructionFlags.PrefixF3));
Add(X86Instruction.Por, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000feb, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pshufb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3800, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pshufd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f70, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pslld, new InstructionInfo(BadOp, 0x06000f72, BadOp, BadOp, 0x00000ff2, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pslldq, new InstructionInfo(BadOp, 0x07000f73, BadOp, BadOp, BadOp, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psllq, new InstructionInfo(BadOp, 0x06000f73, BadOp, BadOp, 0x00000ff3, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psllw, new InstructionInfo(BadOp, 0x06000f71, BadOp, BadOp, 0x00000ff1, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psrad, new InstructionInfo(BadOp, 0x04000f72, BadOp, BadOp, 0x00000fe2, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psraw, new InstructionInfo(BadOp, 0x04000f71, BadOp, BadOp, 0x00000fe1, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psrld, new InstructionInfo(BadOp, 0x02000f72, BadOp, BadOp, 0x00000fd2, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psrlq, new InstructionInfo(BadOp, 0x02000f73, BadOp, BadOp, 0x00000fd3, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psrldq, new InstructionInfo(BadOp, 0x03000f73, BadOp, BadOp, BadOp, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psrlw, new InstructionInfo(BadOp, 0x02000f71, BadOp, BadOp, 0x00000fd1, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psubb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000ff8, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psubd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000ffa, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psubq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000ffb, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Psubw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000ff9, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Punpckhbw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f68, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Punpckhdq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f6a, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Punpckhqdq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f6d, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Punpckhwd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f69, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Punpcklbw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f60, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Punpckldq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f62, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Punpcklqdq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f6c, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Punpcklwd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f61, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Push, new InstructionInfo(BadOp, 0x0000006a, 0x00000068, BadOp, 0x060000ff, InstructionFlags.None));
Add(X86Instruction.Pxor, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fef, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Rcpps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f53, InstructionFlags.Vex));
Add(X86Instruction.Rcpss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f53, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Ror, new InstructionInfo(0x010000d3, 0x010000c1, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Roundpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a09, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Roundps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a08, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Roundsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a0b, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Roundss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a0a, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Rsqrtps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f52, InstructionFlags.Vex));
Add(X86Instruction.Rsqrtss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f52, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Sar, new InstructionInfo(0x070000d3, 0x070000c1, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Setcc, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f90, InstructionFlags.Reg8Dest));
Add(X86Instruction.Shl, new InstructionInfo(0x040000d3, 0x040000c1, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Shr, new InstructionInfo(0x050000d3, 0x050000c1, BadOp, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Shufpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fc6, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Shufps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fc6, InstructionFlags.Vex));
Add(X86Instruction.Sqrtpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f51, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Sqrtps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f51, InstructionFlags.Vex));
Add(X86Instruction.Sqrtsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f51, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Sqrtss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f51, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Stmxcsr, new InstructionInfo(0x03000fae, BadOp, BadOp, BadOp, BadOp, InstructionFlags.Vex));
Add(X86Instruction.Sub, new InstructionInfo(0x00000029, 0x05000083, 0x05000081, BadOp, 0x0000002b, InstructionFlags.None));
Add(X86Instruction.Subpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5c, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Subps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5c, InstructionFlags.Vex));
Add(X86Instruction.Subsd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5c, InstructionFlags.Vex | InstructionFlags.PrefixF2));
Add(X86Instruction.Subss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f5c, InstructionFlags.Vex | InstructionFlags.PrefixF3));
Add(X86Instruction.Test, new InstructionInfo(0x00000085, BadOp, 0x000000f7, BadOp, BadOp, InstructionFlags.None));
Add(X86Instruction.Unpckhpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f15, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Unpckhps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f15, InstructionFlags.Vex));
Add(X86Instruction.Unpcklpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f14, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Unpcklps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f14, InstructionFlags.Vex));
Add(X86Instruction.Vblendvpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a4b, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vblendvps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a4a, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vcvtph2ps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3813, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vcvtps2ph, new InstructionInfo(0x000f3a1d, BadOp, BadOp, BadOp, BadOp, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vfmadd231ps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38b8, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vfmadd231sd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38b9, InstructionFlags.Vex | InstructionFlags.Prefix66 | InstructionFlags.RexW));
Add(X86Instruction.Vfmadd231ss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38b9, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vfmsub231sd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38bb, InstructionFlags.Vex | InstructionFlags.Prefix66 | InstructionFlags.RexW));
Add(X86Instruction.Vfmsub231ss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38bb, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vfnmadd231ps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38bc, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vfnmadd231sd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38bd, InstructionFlags.Vex | InstructionFlags.Prefix66 | InstructionFlags.RexW));
Add(X86Instruction.Vfnmadd231ss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38bd, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vfnmsub231sd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38bf, InstructionFlags.Vex | InstructionFlags.Prefix66 | InstructionFlags.RexW));
Add(X86Instruction.Vfnmsub231ss, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f38bf, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Vpblendvb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a4c, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Xor, new InstructionInfo(0x00000031, 0x06000083, 0x06000081, BadOp, 0x00000033, InstructionFlags.None));
Add(X86Instruction.Xorpd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f57, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Xorps, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f57, InstructionFlags.Vex));
}
private static void Add(X86Instruction inst, InstructionInfo info)
{
_instTable[(int)inst] = info;
}
public Assembler(Stream stream, PtcInfo ptcInfo = null)
{
_stream = stream;
_ptcInfo = ptcInfo;
_ptcDisabled = ptcInfo == null;
}
public void Add(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Add);
}
public void Addsd(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Addsd);
}
public void Addss(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Addss);
}
public void And(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.And);
}
public void Bsr(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Bsr);
}
public void Bswap(Operand dest)
{
WriteInstruction(dest, default, dest.Type, X86Instruction.Bswap);
}
public void Call(Operand dest)
{
WriteInstruction(dest, default, OperandType.None, X86Instruction.Call);
}
public void Cdq()
{
WriteByte(0x99);
}
public void Cmovcc(Operand dest, Operand source, OperandType type, X86Condition condition)
{
InstructionInfo info = _instTable[(int)X86Instruction.Cmovcc];
WriteOpCode(dest, default, source, type, info.Flags, info.OpRRM | (int)condition, rrm: true);
}
public void Cmp(Operand src1, Operand src2, OperandType type)
{
WriteInstruction(src1, src2, type, X86Instruction.Cmp);
}
public void Cqo()
{
WriteByte(0x48);
WriteByte(0x99);
}
public void Cmpxchg(Operand memOp, Operand src)
{
Debug.Assert(memOp.Kind == OperandKind.Memory);
WriteByte(LockPrefix);
WriteInstruction(memOp, src, src.Type, X86Instruction.Cmpxchg);
}
public void Cmpxchg16(Operand memOp, Operand src)
{
Debug.Assert(memOp.Kind == OperandKind.Memory);
WriteByte(LockPrefix);
WriteByte(0x66);
WriteInstruction(memOp, src, src.Type, X86Instruction.Cmpxchg);
}
public void Cmpxchg16b(Operand memOp)
{
Debug.Assert(memOp.Kind == OperandKind.Memory);
WriteByte(LockPrefix);
WriteInstruction(memOp, default, OperandType.None, X86Instruction.Cmpxchg16b);
}
public void Cmpxchg8(Operand memOp, Operand src)
{
Debug.Assert(memOp.Kind == OperandKind.Memory);
WriteByte(LockPrefix);
WriteInstruction(memOp, src, src.Type, X86Instruction.Cmpxchg8);
}
public void Comisd(Operand src1, Operand src2)
{
WriteInstruction(src1, default, src2, X86Instruction.Comisd);
}
public void Comiss(Operand src1, Operand src2)
{
WriteInstruction(src1, default, src2, X86Instruction.Comiss);
}
public void Cvtsd2ss(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Cvtsd2ss);
}
public void Cvtsi2sd(Operand dest, Operand src1, Operand src2, OperandType type)
{
WriteInstruction(dest, src1, src2, X86Instruction.Cvtsi2sd, type);
}
public void Cvtsi2ss(Operand dest, Operand src1, Operand src2, OperandType type)
{
WriteInstruction(dest, src1, src2, X86Instruction.Cvtsi2ss, type);
}
public void Cvtss2sd(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Cvtss2sd);
}
public void Div(Operand source)
{
WriteInstruction(default, source, source.Type, X86Instruction.Div);
}
public void Divsd(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Divsd);
}
public void Divss(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Divss);
}
public void Idiv(Operand source)
{
WriteInstruction(default, source, source.Type, X86Instruction.Idiv);
}
public void Imul(Operand source)
{
WriteInstruction(default, source, source.Type, X86Instruction.Imul128);
}
public void Imul(Operand dest, Operand source, OperandType type)
{
if (source.Kind != OperandKind.Register)
{
throw new ArgumentException($"Invalid source operand kind \"{source.Kind}\".");
}
WriteInstruction(dest, source, type, X86Instruction.Imul);
}
public void Imul(Operand dest, Operand src1, Operand src2, OperandType type)
{
InstructionInfo info = _instTable[(int)X86Instruction.Imul];
if (src2.Kind != OperandKind.Constant)
{
throw new ArgumentException($"Invalid source 2 operand kind \"{src2.Kind}\".");
}
if (IsImm8(src2.Value, src2.Type) && info.OpRMImm8 != BadOp)
{
WriteOpCode(dest, default, src1, type, info.Flags, info.OpRMImm8, rrm: true);
WriteByte(src2.AsByte());
}
else if (IsImm32(src2.Value, src2.Type) && info.OpRMImm32 != BadOp)
{
WriteOpCode(dest, default, src1, type, info.Flags, info.OpRMImm32, rrm: true);
WriteInt32(src2.AsInt32());
}
else
{
throw new ArgumentException($"Failed to encode constant 0x{src2.Value:X}.");
}
}
public void Insertps(Operand dest, Operand src1, Operand src2, byte imm)
{
WriteInstruction(dest, src1, src2, X86Instruction.Insertps);
WriteByte(imm);
}
public void Jcc(X86Condition condition, long offset)
{
if (_ptcDisabled && ConstFitsOnS8(offset))
{
WriteByte((byte)(0x70 | (int)condition));
WriteByte((byte)offset);
}
else if (ConstFitsOnS32(offset))
{
WriteByte(0x0f);
WriteByte((byte)(0x80 | (int)condition));
WriteInt32((int)offset);
}
else
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
}
public void Jmp(long offset)
{
if (_ptcDisabled && ConstFitsOnS8(offset))
{
WriteByte(0xeb);
WriteByte((byte)offset);
}
else if (ConstFitsOnS32(offset))
{
WriteByte(0xe9);
WriteInt32((int)offset);
}
else
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
}
public void Jmp(Operand dest)
{
WriteInstruction(dest, default, OperandType.None, X86Instruction.Jmp);
}
public void Ldmxcsr(Operand dest)
{
WriteInstruction(dest, default, OperandType.I32, X86Instruction.Ldmxcsr);
}
public void Lea(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Lea);
}
public void Mov(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Mov);
}
public void Mov16(Operand dest, Operand source)
{
WriteInstruction(dest, source, OperandType.None, X86Instruction.Mov16);
}
public void Mov8(Operand dest, Operand source)
{
WriteInstruction(dest, source, OperandType.None, X86Instruction.Mov8);
}
public void Movd(Operand dest, Operand source)
{
InstructionInfo info = _instTable[(int)X86Instruction.Movd];
if (source.Type.IsInteger() || source.Kind == OperandKind.Memory)
{
WriteOpCode(dest, default, source, OperandType.None, info.Flags, info.OpRRM, rrm: true);
}
else
{
WriteOpCode(dest, default, source, OperandType.None, info.Flags, info.OpRMR);
}
}
public void Movdqu(Operand dest, Operand source)
{
WriteInstruction(dest, default, source, X86Instruction.Movdqu);
}
public void Movhlps(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Movhlps);
}
public void Movlhps(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Movlhps);
}
public void Movq(Operand dest, Operand source)
{
InstructionInfo info = _instTable[(int)X86Instruction.Movd];
InstructionFlags flags = info.Flags | InstructionFlags.RexW;
if (source.Type.IsInteger() || source.Kind == OperandKind.Memory)
{
WriteOpCode(dest, default, source, OperandType.None, flags, info.OpRRM, rrm: true);
}
else if (dest.Type.IsInteger() || dest.Kind == OperandKind.Memory)
{
WriteOpCode(dest, default, source, OperandType.None, flags, info.OpRMR);
}
else
{
WriteInstruction(dest, source, OperandType.None, X86Instruction.Movq);
}
}
public void Movsd(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Movsd);
}
public void Movss(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Movss);
}
public void Movsx16(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Movsx16);
}
public void Movsx32(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Movsx32);
}
public void Movsx8(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Movsx8);
}
public void Movzx16(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Movzx16);
}
public void Movzx8(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Movzx8);
}
public void Mul(Operand source)
{
WriteInstruction(default, source, source.Type, X86Instruction.Mul128);
}
public void Mulsd(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Mulsd);
}
public void Mulss(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Mulss);
}
public void Neg(Operand dest)
{
WriteInstruction(dest, default, dest.Type, X86Instruction.Neg);
}
public void Not(Operand dest)
{
WriteInstruction(dest, default, dest.Type, X86Instruction.Not);
}
public void Or(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Or);
}
public void Pclmulqdq(Operand dest, Operand source, byte imm)
{
WriteInstruction(dest, default, source, X86Instruction.Pclmulqdq);
WriteByte(imm);
}
public void Pcmpeqw(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Pcmpeqw);
}
public void Pextrb(Operand dest, Operand source, byte imm)
{
WriteInstruction(dest, default, source, X86Instruction.Pextrb);
WriteByte(imm);
}
public void Pextrd(Operand dest, Operand source, byte imm)
{
WriteInstruction(dest, default, source, X86Instruction.Pextrd);
WriteByte(imm);
}
public void Pextrq(Operand dest, Operand source, byte imm)
{
WriteInstruction(dest, default, source, X86Instruction.Pextrq);
WriteByte(imm);
}
public void Pextrw(Operand dest, Operand source, byte imm)
{
WriteInstruction(dest, default, source, X86Instruction.Pextrw);
WriteByte(imm);
}
public void Pinsrb(Operand dest, Operand src1, Operand src2, byte imm)
{
WriteInstruction(dest, src1, src2, X86Instruction.Pinsrb);
WriteByte(imm);
}
public void Pinsrd(Operand dest, Operand src1, Operand src2, byte imm)
{
WriteInstruction(dest, src1, src2, X86Instruction.Pinsrd);
WriteByte(imm);
}
public void Pinsrq(Operand dest, Operand src1, Operand src2, byte imm)
{
WriteInstruction(dest, src1, src2, X86Instruction.Pinsrq);
WriteByte(imm);
}
public void Pinsrw(Operand dest, Operand src1, Operand src2, byte imm)
{
WriteInstruction(dest, src1, src2, X86Instruction.Pinsrw);
WriteByte(imm);
}
public void Pop(Operand dest)
{
if (dest.Kind == OperandKind.Register)
{
WriteCompactInst(dest, 0x58);
}
else
{
WriteInstruction(dest, default, dest.Type, X86Instruction.Pop);
}
}
public void Popcnt(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Popcnt);
}
public void Pshufd(Operand dest, Operand source, byte imm)
{
WriteInstruction(dest, default, source, X86Instruction.Pshufd);
WriteByte(imm);
}
public void Push(Operand source)
{
if (source.Kind == OperandKind.Register)
{
WriteCompactInst(source, 0x50);
}
else
{
WriteInstruction(default, source, source.Type, X86Instruction.Push);
}
}
public void Return()
{
WriteByte(0xc3);
}
public void Ror(Operand dest, Operand source, OperandType type)
{
WriteShiftInst(dest, source, type, X86Instruction.Ror);
}
public void Sar(Operand dest, Operand source, OperandType type)
{
WriteShiftInst(dest, source, type, X86Instruction.Sar);
}
public void Shl(Operand dest, Operand source, OperandType type)
{
WriteShiftInst(dest, source, type, X86Instruction.Shl);
}
public void Shr(Operand dest, Operand source, OperandType type)
{
WriteShiftInst(dest, source, type, X86Instruction.Shr);
}
public void Setcc(Operand dest, X86Condition condition)
{
InstructionInfo info = _instTable[(int)X86Instruction.Setcc];
WriteOpCode(dest, default, default, OperandType.None, info.Flags, info.OpRRM | (int)condition);
}
public void Stmxcsr(Operand dest)
{
WriteInstruction(dest, default, OperandType.I32, X86Instruction.Stmxcsr);
}
public void Sub(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Sub);
}
public void Subsd(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Subsd);
}
public void Subss(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Subss);
}
public void Test(Operand src1, Operand src2, OperandType type)
{
WriteInstruction(src1, src2, type, X86Instruction.Test);
}
public void Xor(Operand dest, Operand source, OperandType type)
{
WriteInstruction(dest, source, type, X86Instruction.Xor);
}
public void Xorps(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Xorps);
}
public void WriteInstruction(
X86Instruction inst,
Operand dest,
Operand source,
OperandType type = OperandType.None)
{
WriteInstruction(dest, default, source, inst, type);
}
public void WriteInstruction(X86Instruction inst, Operand dest, Operand src1, Operand src2)
{
if (src2.Kind == OperandKind.Constant)
{
WriteInstruction(src1, dest, src2, inst);
}
else
{
WriteInstruction(dest, src1, src2, inst);
}
}
public void WriteInstruction(
X86Instruction inst,
Operand dest,
Operand src1,
Operand src2,
OperandType type)
{
WriteInstruction(dest, src1, src2, inst, type);
}
public void WriteInstruction(X86Instruction inst, Operand dest, Operand source, byte imm)
{
WriteInstruction(dest, default, source, inst);
WriteByte(imm);
}
public void WriteInstruction(
X86Instruction inst,
Operand dest,
Operand src1,
Operand src2,
Operand src3)
{
// 3+ operands can only be encoded with the VEX encoding scheme.
Debug.Assert(HardwareCapabilities.SupportsVexEncoding);
WriteInstruction(dest, src1, src2, inst);
WriteByte((byte)(src3.AsByte() << 4));
}
public void WriteInstruction(
X86Instruction inst,
Operand dest,
Operand src1,
Operand src2,
byte imm)
{
WriteInstruction(dest, src1, src2, inst);
WriteByte(imm);
}
private void WriteShiftInst(Operand dest, Operand source, OperandType type, X86Instruction inst)
{
if (source.Kind == OperandKind.Register)
{
X86Register shiftReg = (X86Register)source.GetRegister().Index;
Debug.Assert(shiftReg == X86Register.Rcx, $"Invalid shift register \"{shiftReg}\".");
source = default;
}
else if (source.Kind == OperandKind.Constant)
{
source = Operand.Factory.Const((int)source.Value & (dest.Type == OperandType.I32 ? 0x1f : 0x3f));
}
WriteInstruction(dest, source, type, inst);
}
private void WriteInstruction(Operand dest, Operand source, OperandType type, X86Instruction inst)
{
InstructionInfo info = _instTable[(int)inst];
if (source != default)
{
if (source.Kind == OperandKind.Constant)
{
ulong imm = source.Value;
if (inst == X86Instruction.Mov8)
{
WriteOpCode(dest, default, default, type, info.Flags, info.OpRMImm8);
WriteByte((byte)imm);
}
else if (inst == X86Instruction.Mov16)
{
WriteOpCode(dest, default, default, type, info.Flags, info.OpRMImm32);
WriteInt16((short)imm);
}
else if (IsImm8(imm, type) && info.OpRMImm8 != BadOp)
{
WriteOpCode(dest, default, default, type, info.Flags, info.OpRMImm8);
WriteByte((byte)imm);
}
else if (!source.Relocatable && IsImm32(imm, type) && info.OpRMImm32 != BadOp)
{
WriteOpCode(dest, default, default, type, info.Flags, info.OpRMImm32);
WriteInt32((int)imm);
}
else if (dest != default && dest.Kind == OperandKind.Register && info.OpRImm64 != BadOp)
{
int rexPrefix = GetRexPrefix(dest, source, type, rrm: false);
if (rexPrefix != 0)
{
WriteByte((byte)rexPrefix);
}
WriteByte((byte)(info.OpRImm64 + (dest.GetRegister().Index & 0b111)));
if (_ptcInfo != default && source.Relocatable)
{
_ptcInfo.WriteRelocEntry(new RelocEntry((int)_stream.Position, source.Symbol));
}
WriteUInt64(imm);
}
else
{
throw new ArgumentException($"Failed to encode constant 0x{imm:X}.");
}
}
else if (source.Kind == OperandKind.Register && info.OpRMR != BadOp)
{
WriteOpCode(dest, default, source, type, info.Flags, info.OpRMR);
}
else if (info.OpRRM != BadOp)
{
WriteOpCode(dest, default, source, type, info.Flags, info.OpRRM, rrm: true);
}
else
{
throw new ArgumentException($"Invalid source operand kind \"{source.Kind}\".");
}
}
else if (info.OpRRM != BadOp)
{
WriteOpCode(dest, default, source, type, info.Flags, info.OpRRM, rrm: true);
}
else if (info.OpRMR != BadOp)
{
WriteOpCode(dest, default, source, type, info.Flags, info.OpRMR);
}
else
{
throw new ArgumentNullException(nameof(source));
}
}
private void WriteInstruction(
Operand dest,
Operand src1,
Operand src2,
X86Instruction inst,
OperandType type = OperandType.None)
{
InstructionInfo info = _instTable[(int)inst];
if (src2 != default)
{
if (src2.Kind == OperandKind.Constant)
{
ulong imm = src2.Value;
if ((byte)imm == imm && info.OpRMImm8 != BadOp)
{
WriteOpCode(dest, src1, default, type, info.Flags, info.OpRMImm8);
WriteByte((byte)imm);
}
else
{
throw new ArgumentException($"Failed to encode constant 0x{imm:X}.");
}
}
else if (src2.Kind == OperandKind.Register && info.OpRMR != BadOp)
{
WriteOpCode(dest, src1, src2, type, info.Flags, info.OpRMR);
}
else if (info.OpRRM != BadOp)
{
WriteOpCode(dest, src1, src2, type, info.Flags, info.OpRRM, rrm: true);
}
else
{
throw new ArgumentException($"Invalid source operand kind \"{src2.Kind}\".");
}
}
else if (info.OpRRM != BadOp)
{
WriteOpCode(dest, src1, src2, type, info.Flags, info.OpRRM, rrm: true);
}
else if (info.OpRMR != BadOp)
{
WriteOpCode(dest, src1, src2, type, info.Flags, info.OpRMR);
}
else
{
throw new ArgumentNullException(nameof(src2));
}
}
private void WriteOpCode(
Operand dest,
Operand src1,
Operand src2,
OperandType type,
InstructionFlags flags,
int opCode,
bool rrm = false)
{
int rexPrefix = GetRexPrefix(dest, src2, type, rrm);
if ((flags & InstructionFlags.RexW) != 0)
{
rexPrefix |= RexWPrefix;
}
int modRM = (opCode >> OpModRMBits) << 3;
MemoryOperand memOp = default;
bool hasMemOp = false;
if (dest != default)
{
if (dest.Kind == OperandKind.Register)
{
int regIndex = dest.GetRegister().Index;
modRM |= (regIndex & 0b111) << (rrm ? 3 : 0);
if ((flags & InstructionFlags.Reg8Dest) != 0 && regIndex >= 4)
{
rexPrefix |= RexPrefix;
}
}
else if (dest.Kind == OperandKind.Memory)
{
memOp = dest.GetMemory();
hasMemOp = true;
}
else
{
throw new ArgumentException("Invalid destination operand kind \"" + dest.Kind + "\".");
}
}
if (src2 != default)
{
if (src2.Kind == OperandKind.Register)
{
int regIndex = src2.GetRegister().Index;
modRM |= (regIndex & 0b111) << (rrm ? 0 : 3);
if ((flags & InstructionFlags.Reg8Src) != 0 && regIndex >= 4)
{
rexPrefix |= RexPrefix;
}
}
else if (src2.Kind == OperandKind.Memory && !hasMemOp)
{
memOp = src2.GetMemory();
hasMemOp = true;
}
else
{
throw new ArgumentException("Invalid source operand kind \"" + src2.Kind + "\".");
}
}
bool needsSibByte = false;
bool needsDisplacement = false;
int sib = 0;
if (hasMemOp)
{
// Either source or destination is a memory operand.
Register baseReg = memOp.BaseAddress.GetRegister();
X86Register baseRegLow = (X86Register)(baseReg.Index & 0b111);
needsSibByte = memOp.Index != default || baseRegLow == X86Register.Rsp;
needsDisplacement = memOp.Displacement != 0 || baseRegLow == X86Register.Rbp;
if (needsDisplacement)
{
if (ConstFitsOnS8(memOp.Displacement))
{
modRM |= 0x40;
}
else /* if (ConstFitsOnS32(memOp.Displacement)) */
{
modRM |= 0x80;
}
}
if (baseReg.Index >= 8)
{
Debug.Assert((uint)baseReg.Index <= MaxRegNumber);
rexPrefix |= RexPrefix | (baseReg.Index >> 3);
}
if (needsSibByte)
{
sib = (int)baseRegLow;
if (memOp.Index != default)
{
int indexReg = memOp.Index.GetRegister().Index;
Debug.Assert(indexReg != (int)X86Register.Rsp, "Using RSP as index register on the memory operand is not allowed.");
if (indexReg >= 8)
{
Debug.Assert((uint)indexReg <= MaxRegNumber);
rexPrefix |= RexPrefix | (indexReg >> 3) << 1;
}
sib |= (indexReg & 0b111) << 3;
}
else
{
sib |= 0b100 << 3;
}
sib |= (int)memOp.Scale << 6;
modRM |= 0b100;
}
else
{
modRM |= (int)baseRegLow;
}
}
else
{
// Source and destination are registers.
modRM |= 0xc0;
}
Debug.Assert(opCode != BadOp, "Invalid opcode value.");
if ((flags & InstructionFlags.Vex) != 0 && HardwareCapabilities.SupportsVexEncoding)
{
// In a vex encoding, only one prefix can be active at a time. The active prefix is encoded in the second byte using two bits.
int vexByte2 = (flags & InstructionFlags.PrefixMask) switch
{
InstructionFlags.Prefix66 => 1,
InstructionFlags.PrefixF3 => 2,
InstructionFlags.PrefixF2 => 3,
_ => 0
};
if (src1 != default)
{
vexByte2 |= (src1.GetRegister().Index ^ 0xf) << 3;
}
else
{
vexByte2 |= 0b1111 << 3;
}
ushort opCodeHigh = (ushort)(opCode >> 8);
if ((rexPrefix & 0b1011) == 0 && opCodeHigh == 0xf)
{
// Two-byte form.
WriteByte(0xc5);
vexByte2 |= (~rexPrefix & 4) << 5;
WriteByte((byte)vexByte2);
}
else
{
// Three-byte form.
WriteByte(0xc4);
int vexByte1 = (~rexPrefix & 7) << 5;
switch (opCodeHigh)
{
case 0xf: vexByte1 |= 1; break;
case 0xf38: vexByte1 |= 2; break;
case 0xf3a: vexByte1 |= 3; break;
default: Debug.Assert(false, $"Failed to VEX encode opcode 0x{opCode:X}."); break;
}
vexByte2 |= (rexPrefix & 8) << 4;
WriteByte((byte)vexByte1);
WriteByte((byte)vexByte2);
}
opCode &= 0xff;
}
else
{
if (flags.HasFlag(InstructionFlags.Prefix66))
{
WriteByte(0x66);
}
if (flags.HasFlag(InstructionFlags.PrefixF2))
{
WriteByte(0xf2);
}
if (flags.HasFlag(InstructionFlags.PrefixF3))
{
WriteByte(0xf3);
}
if (rexPrefix != 0)
{
WriteByte((byte)rexPrefix);
}
}
if (dest != default && (flags & InstructionFlags.RegOnly) != 0)
{
opCode += dest.GetRegister().Index & 7;
}
if ((opCode & 0xff0000) != 0)
{
WriteByte((byte)(opCode >> 16));
}
if ((opCode & 0xff00) != 0)
{
WriteByte((byte)(opCode >> 8));
}
WriteByte((byte)opCode);
if ((flags & InstructionFlags.RegOnly) == 0)
{
WriteByte((byte)modRM);
if (needsSibByte)
{
WriteByte((byte)sib);
}
if (needsDisplacement)
{
if (ConstFitsOnS8(memOp.Displacement))
{
WriteByte((byte)memOp.Displacement);
}
else /* if (ConstFitsOnS32(memOp.Displacement)) */
{
WriteInt32(memOp.Displacement);
}
}
}
}
private void WriteCompactInst(Operand operand, int opCode)
{
int regIndex = operand.GetRegister().Index;
if (regIndex >= 8)
{
WriteByte(0x41);
}
WriteByte((byte)(opCode + (regIndex & 0b111)));
}
private static int GetRexPrefix(Operand dest, Operand source, OperandType type, bool rrm)
{
int rexPrefix = 0;
if (Is64Bits(type))
{
rexPrefix = RexWPrefix;
}
void SetRegisterHighBit(Register reg, int bit)
{
if (reg.Index >= 8)
{
rexPrefix |= RexPrefix | (reg.Index >> 3) << bit;
}
}
if (dest != default && dest.Kind == OperandKind.Register)
{
SetRegisterHighBit(dest.GetRegister(), rrm ? 2 : 0);
}
if (source != default && source.Kind == OperandKind.Register)
{
SetRegisterHighBit(source.GetRegister(), rrm ? 0 : 2);
}
return rexPrefix;
}
private static bool Is64Bits(OperandType type)
{
return type == OperandType.I64 || type == OperandType.FP64;
}
private static bool IsImm8(ulong immediate, OperandType type)
{
long value = type == OperandType.I32 ? (int)immediate : (long)immediate;
return ConstFitsOnS8(value);
}
private static bool IsImm32(ulong immediate, OperandType type)
{
long value = type == OperandType.I32 ? (int)immediate : (long)immediate;
return ConstFitsOnS32(value);
}
public static int GetJccLength(long offset, bool ptcDisabled = true)
{
if (ptcDisabled && ConstFitsOnS8(offset < 0 ? offset - 2 : offset))
{
return 2;
}
else if (ConstFitsOnS32(offset < 0 ? offset - 6 : offset))
{
return 6;
}
else
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
}
public static int GetJmpLength(long offset, bool ptcDisabled = true)
{
if (ptcDisabled && ConstFitsOnS8(offset < 0 ? offset - 2 : offset))
{
return 2;
}
else if (ConstFitsOnS32(offset < 0 ? offset - 5 : offset))
{
return 5;
}
else
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
}
private static bool ConstFitsOnS8(long value)
{
return value == (sbyte)value;
}
private static bool ConstFitsOnS32(long value)
{
return value == (int)value;
}
private void WriteInt16(short value)
{
WriteUInt16((ushort)value);
}
private void WriteInt32(int value)
{
WriteUInt32((uint)value);
}
private void WriteByte(byte value)
{
_stream.WriteByte(value);
}
private void WriteUInt16(ushort value)
{
_stream.WriteByte((byte)(value >> 0));
_stream.WriteByte((byte)(value >> 8));
}
private void WriteUInt32(uint value)
{
_stream.WriteByte((byte)(value >> 0));
_stream.WriteByte((byte)(value >> 8));
_stream.WriteByte((byte)(value >> 16));
_stream.WriteByte((byte)(value >> 24));
}
private void WriteUInt64(ulong value)
{
_stream.WriteByte((byte)(value >> 0));
_stream.WriteByte((byte)(value >> 8));
_stream.WriteByte((byte)(value >> 16));
_stream.WriteByte((byte)(value >> 24));
_stream.WriteByte((byte)(value >> 32));
_stream.WriteByte((byte)(value >> 40));
_stream.WriteByte((byte)(value >> 48));
_stream.WriteByte((byte)(value >> 56));
}
}
}
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