ADD: Open version, with important changes kept out.

Signed-off-by: Amlal <amlal.elmahrouss@icloud.com>

1 files changed, 410 insertions, 0 deletions

diff --git a/dev/Kernel/HALKit/AMD64/HalInterruptAPI.asm b/dev/Kernel/HALKit/AMD64/HalInterruptAPI.asm
new file mode 100644
index 00000000..b3d8d91f
--- /dev/null
+++ b/dev/Kernel/HALKit/AMD64/HalInterruptAPI.asm
@@ -0,0 +1,410 @@
+;; /*
+;; *    ---------------------------------------------------
+;; *
+;; * 	Copyright (C) 2024, Amlal EL Mahrouss, all rights reserved.
+;; *
+;; *    File: HalInterruptAPI.asm
+;; *    Purpose: Interrupt API, redirect raw interrupts into their handlers.
+;; *
+;; *    ---------------------------------------------------
+;; */
+
+[bits 64]
+
+%define kInterruptId 50
+
+%macro IntExp 1
+global __ZKA_INT_%1
+__ZKA_INT_%1:
+    cld
+
+    mov al, 0x20
+    out 0xA0, al
+    out 0x20, al
+
+    push rcx
+    call idt_handle_generic
+    pop rcx
+
+    std
+
+    o64 iret
+%endmacro
+
+%macro IntNormal 1
+global __ZKA_INT_%1
+__ZKA_INT_%1:
+    cld
+
+    mov al, 0x20
+    out 0xA0, al
+    out 0x20, al
+
+    std
+    
+    o64 iret
+%endmacro
+
+; This file handles the core interrupt table
+; Last edited 31/01/24
+
+global ke_handle_irq
+global kInterruptVectorTable
+
+extern idt_handle_gpf
+extern idt_handle_pf
+extern ke_io_write
+extern idt_handle_ud
+extern idt_handle_generic
+extern idt_handle_breakpoint
+
+section .text
+
+__ZKA_INT_0:
+    cld
+
+    mov al, 0x20
+    out 0x20, al
+
+    std
+
+    o64 iret
+
+__ZKA_INT_1:
+    cld
+
+    mov al, 0x20
+    out 0x20, al
+
+    push rcx
+    call idt_handle_generic
+    pop rcx
+
+    std
+
+    o64 iret
+
+__ZKA_INT_2:
+    cld
+
+    mov al, 0x20
+    out 0x20, al
+
+    push rcx
+    call idt_handle_generic
+    pop rcx
+
+    std
+
+    o64 iret
+
+;; @brief Triggers a breakpoint and freeze the process. RIP is also fetched.
+__ZKA_INT_3:
+    cld
+
+    mov al, 0x20
+    out 0x20, al
+
+    push rcx
+    call idt_handle_generic
+    pop rcx
+
+    std
+
+    o64 iret
+
+__ZKA_INT_4:
+    cld
+
+    mov al, 0x20
+    out 0x20, al
+
+
+    push rcx
+    call idt_handle_generic
+    pop rcx
+
+    std
+
+    o64 iret
+
+__ZKA_INT_5:
+    cld
+
+    mov al, 0x20
+    out 0x20, al
+
+    std
+
+    o64 iret
+
+;; Invalid opcode interrupt
+__ZKA_INT_6:
+    cld
+
+    mov al, 0x20
+    out 0x20, al
+
+    push rcx
+    call idt_handle_generic
+    pop rcx
+
+    std
+
+    o64 iret
+
+__ZKA_INT_7:
+    cld
+
+    mov al, 0x20
+    out 0x20, al
+
+    push rcx
+    call idt_handle_generic
+    pop rcx
+
+    std
+
+    o64 iret
+
+;; Invalid opcode interrupt
+__ZKA_INT_8:
+    cld
+
+    mov al, 0x20
+    out 0xA0, al
+    out 0x20, al
+
+    push rcx
+    call idt_handle_generic
+    pop rcx
+
+    std
+
+    o64 iret
+
+IntNormal 9
+IntExp   10
+IntExp   11
+
+IntExp 12
+
+__ZKA_INT_13:
+    cld
+
+    mov al, 0x20
+    out 0xA0, al
+    out 0x20, al
+
+    push rcx
+    call idt_handle_gpf
+    pop rcx
+
+    std
+    
+    o64 iret
+
+__ZKA_INT_14:
+    cld
+
+    mov al, 0x20
+    out 0xA0, al
+    out 0x20, al
+
+    push rcx
+    call idt_handle_pf
+    pop rcx
+
+    std
+
+    o64 iret
+
+IntNormal 15
+IntNormal 16
+IntExp 17
+IntNormal 18
+IntNormal 19
+IntNormal 20
+IntNormal 21
+
+IntNormal 22
+
+IntNormal 23
+IntNormal 24
+IntNormal 25
+IntNormal 26
+IntNormal 27
+IntNormal 28
+IntNormal 29
+IntExp    30
+IntNormal 31
+
+[extern idt_handle_scheduler]
+
+__ZKA_INT_32:
+    cld
+
+    mov al, 0x20
+    out 0xA0, al
+    out 0x20, al
+    
+    push rax
+    mov rcx, rsp
+    call idt_handle_scheduler
+    pop rax
+
+    std
+
+    o64 iret
+
+IntNormal 33
+
+IntNormal 34
+IntNormal 35
+IntNormal 36
+IntNormal 37
+IntNormal 38
+IntNormal 39
+IntNormal 40
+
+IntNormal 41
+
+IntNormal 42
+IntNormal 43
+IntNormal 44
+IntNormal 45
+IntNormal 46
+IntNormal 47
+IntNormal 48
+IntNormal 49
+
+[extern hal_system_call_enter]
+[extern hal_kernel_call_enter]
+
+__ZKA_INT_50:
+    cld
+
+    mov al, 0x20
+    out 0xA0, al
+    out 0x20, al
+
+    push rax
+    mov rax, hal_system_call_enter
+
+    mov rcx, r8
+    mov rdx, r9
+
+    call rax
+    pop rax
+
+    std
+
+    o64 iret
+
+__ZKA_INT_51:
+    cld
+
+    mov al, 0x20
+    out 0xA0, al
+    out 0x20, al
+
+    push rax
+    mov rax, hal_kernel_call_enter
+
+    mov rcx, r8
+    mov rdx, r9
+
+    call rax
+    pop rax
+
+    std
+
+    o64 iret
+
+IntNormal 52
+
+IntNormal 53
+IntNormal 54
+IntNormal 55
+IntNormal 56
+IntNormal 57
+IntNormal 58
+IntNormal 59
+IntNormal 60
+
+%assign i 61
+%rep 195
+    IntNormal i
+%assign i i+1
+%endrep
+
+section .text
+
+[global hal_load_gdt]
+
+hal_load_gdt:
+    cld
+
+    lgdt [rcx]
+
+    mov ax, 0x10
+    mov ds, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+    mov ss, ax
+
+    mov rax, 0x08
+    push rax
+    push hal_reload_segments
+
+    o64 retf
+
+extern hal_real_init
+
+hal_reload_segments:
+    std
+
+    jmp hal_real_init
+    ret
+
+global hal_load_idt
+
+hal_load_idt:
+    lidt [rcx]
+
+    ; Master PIC initialization
+    mov al, 0x11          ; Start initialization in cascade mode
+    out 0x20, al          ; Send initialization command to Master PIC
+    out 0xA0, al          ; Send initialization command to Slave PIC
+
+    ; Remap the PIC to use vectors 32-39 for Master and 40-47 for Slave
+    mov al, 0x20          ; Set Master PIC offset to 32
+    out 0x21, al          ; Send offset to Master PIC
+
+    mov al, 0x28          ; Set Slave PIC offset to 40
+    out 0xA1, al          ; Send offset to Slave PIC
+
+    ; Configure Master PIC to inform Slave PIC at IRQ2
+    mov al, 0x04          ; Tell Master PIC there is a Slave PIC at IRQ2
+    out 0x21, al
+
+    ; Configure Slave PIC identity
+    mov al, 0x02          ; Tell Slave PIC its cascade identity
+    out 0xA1, al
+
+    ; Set both PICs to 8086 mode
+    mov al, 0x01          ; 8086 mode
+    out 0x21, al
+    out 0xA1, al
+
+    ret
+
+section .data
+
+kInterruptVectorTable:
+    %assign i 0
+    %rep 256
+        dq __ZKA_INT_%+i
+    %assign i i+1
+    %endrep