;
[BITS 64]
+[extern Log]
+
%define NUM_IRQ_CALLBACKS 4
MM_LOCALAPIC equ 0xFFFFFD0000000000
%endrep
; Install IRQs
- SETIDT 0xF0, Irq0
+ SETIDT 0xF0, SchedulerIRQ
SETIDT 0xF1, Irq1
SETIDT 0xF2, Irq2
SETIDT 0xF3, Irq3
; Assign the IRQ Callback
.assign:
+ ; A little bit of debug
+ push rdi
+ push rsi
+ push rax
+ sub rsp, 8
+ mov rcx, rdi ; IRQ Number
+ mov rdx, rsi ; Callback
+ mov rsi, rax ; Pointer
+ mov rdi, csIRQ_Assigned
+ call Log
+ add rsp, 8
+ pop rax
+ pop rsi
+ pop rdi
+
mov [rax], rsi
xor rax, rax
.ret:
ret
+
+[section .rodata]
+csIRQ_Assigned:
+ db "IRQ %p := %p (IRQ %i)",0
+[section .text]
%macro ISR_NOERRNO 1
Isr%1:
POP_GPR
add rsp, 8*2
- xchg bx, bx
+ ;xchg bx, bx
iretq
[extern Proc_Scheduler]
[global SchedulerIRQ]
SchedulerIRQ:
- ; TODO: Find Current CPU
PUSH_GPR
;PUSH_FPU
;PUSH_XMM
- xor rsi, rsi
- mov rdi, MM_LOCALAPIC+0x20
- mov esi, [rdi]
+ ; Save Thread Pointer
+ mov rax, dr0
+ push rax
+
+ ; Get the CPU Number
+ mov rdi, dr1
+ ; Call the Scheduler
call Proc_Scheduler
+ ; Restore Thread Pointer
+ pop rax
+ mov dr0, rax
+
+ ; Send EOI (To either the APIC or the PIC)
+ %if USE_MP
+ test ebx, ebx
+ jnz .sendEOI
+ %endif
+ ; PIC
+ mov al, 0x20
+ out 0x20, al ; ACK IRQ
+ %if USE_MP
+ jmp .ret
+ ; APIC
+.sendEOI:
+ mov eax, DWORD [gpMP_LocalAPIC]
+ mov DWORD [eax+0x0B0], 0
+ %endif
+.ret:
+
;POP_XMM
;POP_FPU
POP_GPR
- add rsp, 8*2
iretq
[section .data]