driver/pic: one argument for IRQ handlers

driver/irq/pic/int_handler.asm.S

@@ -3,6 +3,7 @@ format elf64
 include 'pic_constants.incS'
 
 extrn irq_pic_IntHandler
+extrn irq_pic_IRQHandler_Data
 extrn irq_pic_IRQHandlerRaw
 
 public irq_pic_IntHandler20h
@@ -52,6 +53,7 @@ macro inth op1 {
 	push r9
 	push r10
 	push r11
+	mov  rdi, [irq_pic_IRQHandler_Data+op1*8]
 	call irq_pic_IntHandler
 	pop r11
 	pop r10

driver/irq/pic/pic.h

@@ -34,6 +34,7 @@ typedef SYSV_ABI void (*irq_pic_IRQHandlerType)();
 
 // defined in pic_init.c
 extern irq_pic_IRQHandlerType irq_pic_IRQHandler[16];
+extern uintptr_t              irq_pic_IRQHandler_Data[16]; // written into RDI on handler (first argument)
 extern bool                   irq_pic_Enabled;
 
 // If IRQHandlerRaw[irq] is not NULL, the function is jumped to (not called).

driver/irq/pic/pic_init.c

@@ -10,6 +10,7 @@
 
 
 irq_pic_IRQHandlerType irq_pic_IRQHandler[16];
+uintptr_t              irq_pic_IRQHandler_Data[16];
 void *                 irq_pic_IRQHandlerRaw[16];
 bool                   irq_pic_Enabled;