dan/Cosmos
1
0
Fork 0
mirror of https://github.com/danbulant/Cosmos synced 2026-05-22 13:58:47 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix array copy.

Browse source
This commit is contained in:
Charles Betros 2016-08-10 18:06:18 -05:00
parent 37a4e71deb
commit c8dfbd8127
1 changed files with 23 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
source/Cosmos.Core.Plugs/System/Assemblers/Array_InternalCopy.cs
View file

@ -1,54 +1,62 @@
using Cosmos.Debug.Kernel;
using Cosmos.IL2CPU.Plugs;
using XSharp.Compiler;
using ObjectInfo = Cosmos.IL2CPU.Plugs.System.ObjectImpl;
using CPUx86 = Cosmos.Assembler.x86;
namespace Cosmos.Core.Plugs.System.Assemblers
{
public class Array_InternalCopy : AssemblerMethod
{
private const int SourceArrayDisplacement = 0x1C;
private const int SourceIndexDisplacement = 0x18;
private const int DestinationArrayDisplacement = 0x14;
private const int SourceArrayDisplacement = 0x24;
private const int SourceIndexDisplacement = 0x1C;
private const int DestinationArrayDisplacement = 0x18;
private const int DestinationIndexDisplacement = 0x10;
private const int LengthDisplacement = 0xC;
/* void Copy(Array sourceArray, ebp + 0x1C
* int sourceIndex, ebp + 0x18
* Array destinationArray, ebp + 0x14
/* void Copy(Array sourceArray, ebp + 0x24
* int sourceIndex, ebp + 0x1C
* Array destinationArray, ebp + 0x18
* int destinationIndex, ebp + 0x10
* int length, ebp + 0xC
* bool reliable); ebp + 0x8
*/
public override void AssembleNew(Assembler.Assembler aAssembler, object aMethodInfo)
{
XS.Exchange(XSRegisters.BX, XSRegisters.BX);
XS.Comment("Source");
XS.Set(XSRegisters.EAX, XSRegisters.EBP, sourceDisplacement: SourceArrayDisplacement);
XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true); // dereference memory handle to pointer
//XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true); // dereference memory handle to pointer
XS.Push(XSRegisters.EAX);
new CPUx86.Add { DestinationReg = CPUx86.RegistersEnum.ESP, DestinationIsIndirect = true, SourceValue = 12, Size = 32 }; // pointer is at the element size
new CPUx86.Add { DestinationReg = CPUx86.RegistersEnum.ESP, DestinationIsIndirect = true, SourceValue = ObjectInfo.FieldDataOffset, Size = 32 }; // pointer is at the element size
XS.Pop(XSRegisters.EAX);
XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true); // element size
XS.Set(XSRegisters.EBX, XSRegisters.EBP, sourceDisplacement: SourceIndexDisplacement);
XS.Multiply(XSRegisters.EBX);
XS.Add(XSRegisters.EAX, 16);
XS.Set(XSRegisters.ESI, XSRegisters.EBP, sourceDisplacement: SourceArrayDisplacement);
XS.Set(XSRegisters.ESI, XSRegisters.ESI, sourceIsIndirect: true); // dereference memory handle to pointer
//XS.Set(XSRegisters.ESI, XSRegisters.ESI, sourceIsIndirect: true); // dereference memory handle to pointer
XS.Add(XSRegisters.ESI, XSRegisters.EAX); // source ptr
XS.Exchange(XSRegisters.BX, XSRegisters.BX);
XS.Comment("Destination");
XS.Set(XSRegisters.EDX, XSRegisters.EBP, sourceDisplacement: DestinationArrayDisplacement);
XS.Set(XSRegisters.EDX, XSRegisters.EDX, sourceIsIndirect: true); // dereference memory handle to pointer
//XS.Set(XSRegisters.EDX, XSRegisters.EDX, sourceIsIndirect: true); // dereference memory handle to pointer
XS.Push(XSRegisters.EDX);
new CPUx86.Add { DestinationReg = CPUx86.RegistersEnum.ESP, DestinationIsIndirect = true, SourceValue = 12, Size = 32 }; // pointer is at element size
new CPUx86.Add { DestinationReg = CPUx86.RegistersEnum.ESP, DestinationIsIndirect = true, SourceValue = ObjectInfo.FieldDataOffset, Size = 32 }; // pointer is at element size
XS.Pop(XSRegisters.EAX);
XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true); // dereference handle to pointer
XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true); // element size
XS.Set(XSRegisters.ECX, XSRegisters.EBP, sourceDisplacement: DestinationIndexDisplacement);
XS.Multiply(XSRegisters.ECX);
XS.Add(XSRegisters.EAX, 16);
XS.Set(XSRegisters.EDI, XSRegisters.EBP, sourceDisplacement: DestinationArrayDisplacement);
XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceIsIndirect: true); // dereference handle to pointer
XS.Add(XSRegisters.EDI, XSRegisters.EAX);
//XS.Set(XSRegisters.EDI, XSRegisters.EDI, sourceIsIndirect: true); // dereference handle to pointer
XS.Add(XSRegisters.EDI, XSRegisters.EAX); // destination ptr
// calculate byte count to copy
XS.Exchange(XSRegisters.BX, XSRegisters.BX);
XS.Set(XSRegisters.EAX, XSRegisters.EBP, sourceDisplacement: DestinationArrayDisplacement);
XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true); // dereference memory handle to pointer
//XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true); // dereference memory handle to pointer
XS.Add(XSRegisters.EAX, 12);
XS.Set(XSRegisters.EAX, XSRegisters.EAX, sourceIsIndirect: true);
XS.Set(XSRegisters.EDX, XSRegisters.EBP, sourceDisplacement: LengthDisplacement);