mirror of
https://github.com/danbulant/Cosmos
synced 2026-06-03 06:40:23 +00:00
498f293c8a
[+] Registers enumeration (only GPRs) [+] Basic class ProcessorInstruction [+] Base class InstructionOperand it's child GeneralPurposeRegister [+] Added some abstraction to DestSourceInstruction [+] Added stub for first instruction - AddWithCarry
29 lines
745 B
C#
29 lines
745 B
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Diagnostics;
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using System.IO;
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namespace Lost.JIT.AMD64OLD
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{
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static class ModRM
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{
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public static void EncodeRegisters(this Stream dest, Register destReg, Register sourceReg)
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{
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destReg &= Register.Legacy;
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sourceReg &= Register.Legacy;
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byte result = 0xC0; //11000000b
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result |= (byte)(((byte)destReg) << 3 | (byte)sourceReg);
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dest.WriteByte(result);
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}
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public static void EncodeIndirectMemory(this Stream dest, byte xcode, Register baseReg)
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{
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Debug.Assert((xcode & ~(byte)Register.Legacy) == 0);
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byte modRM =(byte)((xcode << 3) | (byte)baseReg);
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dest.WriteByte(modRM);
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}
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}
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}
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