ret
-; int IRQ_AddHandler(int IRQ, void (*Handler)(int IRQ))
+; int IRQ_AddHandler(int IRQ, void (*Handler)(int IRQ), void *Ptr)
; Return Values:
; 0 on Success
; -1 on an invalid IRQ Number
IRQ_AddHandler:
; RDI - IRQ Number
; RSI - Callback
+ ; RDX - Ptr
; Check for RDI >= 16
cmp rdi, 16
; Find a free callback slot
%rep NUM_IRQ_CALLBACKS
- mov rdx, [rax]
- test rdx, rdx
+ mov rcx, [rax]
+ test rcx, rcx
jz .assign
add rax, 8
%endrep
push rdi
push rsi
push rax
+ push rdx
sub rsp, 8
mov rcx, rdi ; IRQ Number
mov rdx, rsi ; Callback
mov rdi, csIRQ_Assigned
call Log
add rsp, 8
+ pop rdx
pop rax
pop rsi
pop rdi
; Assign and return
mov [rax], rsi
+ add rax, gaIRQ_DataPtrs - gaIRQ_Handlers
+ mov [rax], rdx
xor rax, rax
.ret:
jz .skip.%[i]
; Set RDI to IRQ number
mov rdi, [rsp+(16+2+1)*8] ; Get IRQ number
+ mov rsi, [rbx-gaIRQ_Handlers+gaIRQ_DataPtrs]
call rax ; Call
.skip.%[i]:
add rbx, 8 ; Next!
gaIRQ_Handlers:
times 16*NUM_IRQ_CALLBACKS dq 0
+gaIRQ_DataPtrs:
+ times 16*NUM_IRQ_CALLBACKS dq 0