dan/Cosmos
1
0
Fork 0
mirror of https://github.com/danbulant/Cosmos synced 2026-06-10 02:02:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

[+] Clt & Clt_Un both should work with 64bit operands.

Browse source
This commit is contained in:
LostTheBlack_cp 2008-04-18 12:33:00 +00:00
parent 175ad54c3f
commit 60f807ecd8
2 changed files with 68 additions and 38 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
source/Indy.IL2CPU.IL.X86/Clt.cs
View file

@ -5,6 +5,7 @@ using System.IO;
using CPUx86 = Indy.IL2CPU.Assembler.X86;
using CPU = Indy.IL2CPU.Assembler;
using Indy.IL2CPU.Assembler;
using Indy.IL2CPU.Assembler.X86;
namespace Indy.IL2CPU.IL.X86 {
[OpCode(OpCodeEnum.Clt)]
@ -28,26 +29,40 @@ namespace Indy.IL2CPU.IL.X86 {
string BaseLabel = CurInstructionLabel + "__";
string LabelTrue = BaseLabel + "True";
string LabelFalse = BaseLabel + "False";
new CPUx86.Pop(CPUx86.Registers.ECX);
if (xSize > 4) {
new CPUx86.Add("esp", "4");
if (xSize > 4)
{
new CPUx86.Xor("esi", "esi");
new CPUx86.Add("esi", "1");
new CPUx86.Xor("edi", "edi");
//esi = 1
new CPUx86.Pop(CPUx86.Registers.EAX);
new CPUx86.Pop(CPUx86.Registers.EDX);
//value2: EDX:EAX
new CPUx86.Pop("ebx");
new CPUx86.Pop("ecx");
//value1: ECX:EBX
new CPUx86.Sub("ebx", "eax");
new CPUx86.SubWithCarry("ecx", "edx");
//result = value1 - value2
new CPUx86.ConditionalMove(Condition.Less, "edi", "esi");
new CPUx86.Push("edi");
} else
{
new CPUx86.Pop(CPUx86.Registers.ECX);
new CPUx86.Pop(CPUx86.Registers.EAX);
new CPUx86.Pushd(CPUx86.Registers.ECX);
new CPUx86.Compare(CPUx86.Registers.EAX, CPUx86.Registers.AtESP);
new CPUx86.JumpIfLess(LabelTrue);
new CPUx86.JumpAlways(LabelFalse);
new CPU.Label(LabelTrue);
new CPUx86.Add(CPUx86.Registers.ESP, "4");
new CPUx86.Push("01h");
new CPUx86.JumpAlways(NextInstructionLabel);
new CPU.Label(LabelFalse);
new CPUx86.Add(CPUx86.Registers.ESP, "4");
new CPUx86.Push("00h");
new CPUx86.JumpAlways(NextInstructionLabel);
}
new CPUx86.Pop(CPUx86.Registers.EAX);
if (xSize > 4) {
new CPUx86.Add("esp", "4");
}
new CPUx86.Pushd(CPUx86.Registers.ECX);
new CPUx86.Compare(CPUx86.Registers.EAX, CPUx86.Registers.AtESP);
new CPUx86.JumpIfLess(LabelTrue);
new CPUx86.JumpAlways(LabelFalse);
new CPU.Label(LabelTrue);
new CPUx86.Add(CPUx86.Registers.ESP, "4");
new CPUx86.Push("01h");
new CPUx86.JumpAlways(NextInstructionLabel);
new CPU.Label(LabelFalse);
new CPUx86.Add(CPUx86.Registers.ESP, "4");
new CPUx86.Push("00h");
new CPUx86.JumpAlways(NextInstructionLabel);
}
}
}

53
source/Indy.IL2CPU.IL.X86/Clt_Un.cs
View file

@ -5,6 +5,7 @@ using System.IO;
using CPUx86 = Indy.IL2CPU.Assembler.X86;
using CPU = Indy.IL2CPU.Assembler;
using Indy.IL2CPU.Assembler;
using Indy.IL2CPU.Assembler.X86;
namespace Indy.IL2CPU.IL.X86 {
[OpCode(OpCodeEnum.Clt_Un)]
@ -28,26 +29,40 @@ namespace Indy.IL2CPU.IL.X86 {
string BaseLabel = CurInstructionLabel + "__";
string LabelTrue = BaseLabel + "True";
string LabelFalse = BaseLabel + "False";
new CPUx86.Pop(CPUx86.Registers.ECX);
if (xSize > 4) {
new CPUx86.Add("esp", "4");
if (xSize > 4)
{
new CPUx86.Xor("esi", "esi");
new CPUx86.Add("esi", "1");
new CPUx86.Xor("edi", "edi");
//esi = 1
new CPUx86.Pop(CPUx86.Registers.EAX);
new CPUx86.Pop(CPUx86.Registers.EDX);
//value2: EDX:EAX
new CPUx86.Pop("ebx");
new CPUx86.Pop("ecx");
//value1: ECX:EBX
new CPUx86.Sub("ebx", "eax");
new CPUx86.SubWithCarry("ecx", "edx");
//result = value1 - value2
new CPUx86.ConditionalMove(Condition.Below, "edi", "esi");
new CPUx86.Push("edi");
} else
{
new CPUx86.Pop(CPUx86.Registers.ECX);
new CPUx86.Pop(CPUx86.Registers.EAX);
new CPUx86.Pushd(CPUx86.Registers.ECX);
new CPUx86.Compare(CPUx86.Registers.EAX, CPUx86.Registers.AtESP);
new CPUx86.JumpIfLess(LabelTrue);
new CPUx86.JumpAlways(LabelFalse);
new CPU.Label(LabelTrue);
new CPUx86.Add(CPUx86.Registers.ESP, "4");
new CPUx86.Push("01h");
new CPUx86.JumpAlways(NextInstructionLabel);
new CPU.Label(LabelFalse);
new CPUx86.Add(CPUx86.Registers.ESP, "4");
new CPUx86.Push("00h");
new CPUx86.JumpAlways(NextInstructionLabel);
}
new CPUx86.Pop(CPUx86.Registers.EAX);
if (xSize > 4) {
new CPUx86.Add("esp", "4");
}
new CPUx86.Pushd(CPUx86.Registers.ECX);
new CPUx86.Compare(CPUx86.Registers.EAX, CPUx86.Registers.AtESP);
new CPUx86.JumpIfLess(LabelTrue);
new CPUx86.JumpAlways(LabelFalse);
new CPU.Label(LabelTrue);
new CPUx86.Add(CPUx86.Registers.ESP, "4");
new CPUx86.Push("01h");
new CPUx86.JumpAlways(NextInstructionLabel);
new CPU.Label(LabelFalse);
new CPUx86.Add(CPUx86.Registers.ESP, "4");
new CPUx86.Push("00h");
new CPUx86.JumpAlways(NextInstructionLabel);
}
}
}