From a13e1c0911c0627184bc38f18c7fdda64447b3ad Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>
Date: Sun, 23 Mar 2025 19:13:48 +0100
Subject: meta(kernel): Reworked repository's filesystem structure.

Removing useless parts of the project too.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>
---
 .../AMD64/HalApplicationProcessorStartup.asm       | 77 ++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 dev/kernel/HALKit/AMD64/HalApplicationProcessorStartup.asm

(limited to 'dev/kernel/HALKit/AMD64/HalApplicationProcessorStartup.asm')

diff --git a/dev/kernel/HALKit/AMD64/HalApplicationProcessorStartup.asm b/dev/kernel/HALKit/AMD64/HalApplicationProcessorStartup.asm
new file mode 100644
index 00000000..c64e0a09
--- /dev/null
+++ b/dev/kernel/HALKit/AMD64/HalApplicationProcessorStartup.asm
@@ -0,0 +1,77 @@
+;; /*
+;; *	========================================================
+;; *
+;; *	NeKernel
+;; * 	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+;; *
+;; * 	========================================================
+;; */
+
+[bits 16]
+[org 0x7c000]
+
+hal_ap_start:
+    mov ax, 0x0      
+    mov ss, ax
+    mov esp, 0x7000  
+
+    cli    
+    mov eax, cr0
+    or eax, 1        
+    mov cr0, eax
+    jmp .hal_ap_start_flush       
+.hal_ap_start_flush:
+    mov ax, 0x10     
+    mov ds, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+    mov ss, ax
+
+    mov eax, cr4
+    or eax, 1 << 5   
+    mov cr4, eax
+
+    mov eax, cr3
+    mov cr3, eax     
+
+    mov ecx, 0xC0000080 
+    rdmsr
+    or eax, 1         
+    wrmsr
+
+    mov eax, cr0
+    or eax, (1 << 31)
+    mov cr0, eax
+
+    jmp 0x08:hal_ap_64bit_entry
+hal_ap_end:
+
+hal_ap_length:
+    dq hal_ap_end - hal_ap_start
+
+[bits 64]
+
+hal_ap_64bit_entry:
+    mov ax, 0x23     
+    mov ds, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+    mov ss, ax
+    mov rsp, [hal_ap_64bit_entry_stack_end]
+
+    push 0x33                 
+    push qword [hal_ap_64bit_entry_loop]      
+    o64 pushf               
+    push rsp                  
+    push 0x33                 
+
+    o64 iret 
+
+hal_ap_64bit_entry_loop:
+    jmp $
+
+hal_ap_64bit_entry_stack:
+    resb 8196*2
+hal_ap_64bit_entry_stack_end:
\ No newline at end of file
-- 
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