Initial commit

code/ap_boot_protected_ap.asm

@@ -0,0 +1,25 @@
+; Continuing boot_ap_32:
+    ; Get the local APIC ID of this AP, to locate GDT and stack
+    mov eax, 0x1
+    cpuid
+    shr ebx, 0x18
+    mov edi, ebx ; Now the ID is in EDI
+
+    ; Load the prepared AP GDT
+    mov ebx, [boot_ap_gdts - boot_ap + startup_address]
+    mov eax, [ebx + edi * 0x4]
+    lgdt [eax]
+
+    ; Load the TSS
+    mov ax, 0x28
+    ltr ax
+
+    ; Load the correct stack for this AP
+    mov ebx, [boot_ap_stacks - boot_ap + startup_address]
+    mov esp, [ebx + edi * 0x4]
+    add esp, stack_size ; Stack starts at the bottom
+    mov ebp, esp
+
+    ; Call the entry function
+    push edi
+    call [boot_ap_entry - boot_ap + startup_address]