mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-20 12:58:39 +00:00
58c556f085
- Added Console.Clear() to Guess Demo (the boot text remained on screen) - Added to BCL test BitConverterTest (all failing), test for single / double arithmetic operations - Added to TestRunner BCLTest
45 lines
1.9 KiB
C#
45 lines
1.9 KiB
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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namespace Cosmos.Core {
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public static class Bootstrap {
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// See note in Global - these are a "hack" for now so
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// we dont force static init of Global, and it "pulls" these later till
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// we eventually eliminate them
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static public PIC PIC;
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// Has to be static for now, ZeroFill gets called before the Init.
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static public readonly CPU CPU = new CPU();
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// Bootstrap is a class designed only to get the essentials done.
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// ie the stuff needed to "pre boot". Do only the very minimal here.
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// IDT, PIC, and Float
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// Note: This is changing a bit GDT (already) and IDT are moving to a real preboot area.
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public static void Init() {
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// Drag this stuff in to the compiler manually until we add the always include attrib
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INTs.Dummy();
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PIC = new PIC();
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CPU.UpdateIDT(true);
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/* TODO check using CPUID that SSE2 is supported */
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CPU.InitSSE();
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/*
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* We liked to use SSE for all floating point operation and end to mix SSE / x87 in Cosmos code
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* but sadly in x86 this resulte impossible as Intel not implemented some needed instruction (for example conversion
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* for long to double) so - in some rare cases - x87 continue to be used. I hope passing to the x32 or x64 IA will solve
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* definively this problem.
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*/
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CPU.InitFloat();
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// Not sure if this is necessary, heap is already used before we get here
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// and it seems to be fully (or at least partially) self initializing
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Heap.EnsureIsInitialized();
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// Managed_Memory_System.ManagedMemory.Initialize();
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// Managed_Memory_System.ManagedMemory.SetUpMemoryArea();
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}
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}
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}
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