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|
;; /*
;; * ---------------------------------------------------
;; *
;; * Copyright ZKA Technologies., all rights reserved.
;; *
;; * File: HalInterruptAPI.asm
;; * Purpose: Interrupt API, redirect raw interrupts into their handlers.
;; *
;; * ---------------------------------------------------
;; */
[bits 64]
%define kInterruptId 0x21
%macro IntExp 1
global __ZKA_INT_%1
__ZKA_INT_%1:
cld
iretq
%endmacro
%macro IntNormal 1
global __ZKA_INT_%1
__ZKA_INT_%1:
cld
iretq
%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
section .text
IntNormal 0
IntNormal 1
IntNormal 2
IntNormal 3
IntNormal 4
IntNormal 5
;; Invalid opcode interrupt
__ZKA_INT_6:
cli
push rax
mov rcx, rsp
call idt_handle_ud
pop rax
sti
iretq
IntNormal 7
;; Invalid opcode interrupt
__ZKA_INT_8:
cli
push rax
mov rcx, rsp
call idt_handle_generic
pop rax
sti
iretq
IntNormal 9
IntExp 10
IntExp 11
IntExp 12
__ZKA_INT_13:
cli
push rax
mov rcx, rsp
call idt_handle_gpf
pop rax
sti
iretq
__ZKA_INT_14:
cli
push rax
mov rcx, rsp
call idt_handle_pf
pop rax
sti
iretq
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
IntNormal 32
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_kernel_call_enter]
IntNormal 50
__ZKA_INT_51:
cli
push rcx
push rdx
push r8
push r9
push rax
call hal_kernel_call_enter
pop rax
pop r9
pop r8
pop rdx
pop rcx
sti
iretq
[extern hal_on_ap_startup]
PRESENT equ 1 << 7
NOT_SYS equ 1 << 4
EXEC equ 1 << 3
DC equ 1 << 2
RW equ 1 << 1
ACCESSED equ 1 << 0
; Flags bits
GRAN_4K equ 1 << 7
SZ_32 equ 1 << 6
LONG_MODE equ 1 << 5
__ZKA_INT_52:
cli
jmp hal_on_ap_startup
sti
ret
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:
cli
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:
sti
;; Write address of syscall handler.
mov rdx, [mp_system_call_handler]
shr rdx, 32
mov rcx, 0xC0000082
wrmsr
;; Set segments of syscall handler.
xor rax, rax
mov rdx, 0x230008
mov rcx, 0xC0000081
wrmsr
mov ecx, 0xC0000080
rdmsr
or eax, 1
wrmsr
jmp hal_real_init
ret
global hal_load_idt
global hal_user_code_start
extern hal_system_call_enter
global mp_system_call_handler
mp_system_call_handler:
push r8
push r9
push r10
push r11
push r12
push r13
push r14
push r15
jmp hal_system_call_enter
pop r15
pop r14
pop r13
pop r12
pop r11
pop r10
pop r9
pop r8
o64 sysret
hal_load_idt:
cli
lidt [rcx]
sti
ret
section .data
kInterruptVectorTable:
%assign i 0
%rep 256
dq __ZKA_INT_%+i
%assign i i+1
%endrep
|
