From 15a2290a168fa9de80256bb7cefe13384ae3e58b Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Thu, 1 Jun 2017 17:17:03 +0200
Subject: interrupt handlers take the manager as context now

---
 src/interrupts.asm |  4 ++--
 src/interrupts.c   | 29 +++++++++++++++++++++--------
 src/interrupts.h   | 16 ++++++++++------
 3 files changed, 33 insertions(+), 16 deletions(-)

diff --git a/src/interrupts.asm b/src/interrupts.asm
index 4f19609..e0b0707 100644
--- a/src/interrupts.asm
+++ b/src/interrupts.asm
@@ -3,7 +3,7 @@
 global interrupts_enable
 global interrupts_disable
 global interrupts_load_idt
-extern interrupts_handle_interrupt
+extern interrupts_handle_static_interrupt
 
 ; void interrupts_enable( void )
 interrupts_enable:
@@ -72,7 +72,7 @@ int_entry:
 	push esp
 	mov eax, [interrupt_no]
 	push eax
-	call interrupts_handle_interrupt
+	call interrupts_handle_static_interrupt
 	;add esp, 8
 	mov esp, eax
 
diff --git a/src/interrupts.c b/src/interrupts.c
index b522ced..07a7e55 100644
--- a/src/interrupts.c
+++ b/src/interrupts.c
@@ -141,7 +141,7 @@ void interrupts_register_interrupt( interrupt_t *interrupts,
 	interrupts->interrupt_handler[interrupt_no] = handler;
 }
 
-uint32_t interrupts_exception_division_by_zero( uint32_t esp )
+uint32_t interrupts_exception_division_by_zero( interrupt_t *interrupt, uint32_t esp )
 {
 	// TODO: caused by kernel code or user land code? or a task we can kill?
 	// For now, the kernel has no task management, so we panic
@@ -151,36 +151,49 @@ uint32_t interrupts_exception_division_by_zero( uint32_t esp )
 }
 
 static int pit_counter = 0;
-uint32_t interrupts_interrupt_PIT( uint32_t esp )
+uint32_t interrupts_interrupt_PIT( interrupt_t *interrupt, uint32_t esp )
 {
 	pit_counter++;
 	printf( "PIT PIT PIT PIT PIT PIT PIT %d", pit_counter );
 	return esp;
 }
 
-uint32_t interrupts_interrupt_keyboard( uint32_t esp )
+uint32_t interrupts_interrupt_keyboard( interrupt_t *interrupt, uint32_t esp )
 {
 	puts( "KBD KBD KBD KBD KBD KBD KBD" );
+
+int y = 0;
+int x = 12 / y;
+printf( "Hex number is 0x%X and string is '%s'\n", x, "abaos" );			
 	return esp;
 }
 
 
-uint32_t interrupts_handle_interrupt( uint8_t interrupt_no, uint32_t esp )
+uint32_t interrupts_handle_static_interrupt( uint8_t interrupt_no, uint32_t esp )
+{
+	if( active_interrupt == NULL ) {
+		kernel_panic( "No active interrupt handler!" );
+	}
+	
+	return interrupts_handle_interrupt( active_interrupt, interrupt_no, esp );
+}
+
+uint32_t interrupts_handle_interrupt( interrupt_t *interrupt, uint8_t interrupt_no, uint32_t esp )
 {
-	interrupt_handler_t handler = active_interrupt->interrupt_handler[interrupt_no];
+	interrupt_handler_t handler = interrupt->interrupt_handler[interrupt_no];
 	
 	if( handler == NULL ) {
 		kernel_panic( "Unhandled interrupt 0x%X with ESP 0x%X\n", interrupt_no, esp );
 	}
 
-	uint32_t new_esp = handler( esp );
+	uint32_t new_esp = handler( interrupt, esp );
 
 	// send ACK to PIC for hardware interrups
 	if( interrupt_no >= IRQ_BASE && interrupt_no <= IRQ_BASE + 16 ) {
 		if( interrupt_no < IRQ_BASE + 8 ) {
-			port8_write( &active_interrupt->PIC_master_control, OCW2_EOI );
+			port8_write( &interrupt->PIC_master_control, OCW2_EOI );
 		} else {
-			port8_write( &active_interrupt->PIC_slave_control, OCW2_EOI );
+			port8_write( &interrupt->PIC_slave_control, OCW2_EOI );
 		}
 	}
 
diff --git a/src/interrupts.h b/src/interrupts.h
index 547e7c2..0cdb6cc 100644
--- a/src/interrupts.h
+++ b/src/interrupts.h
@@ -41,9 +41,11 @@ typedef struct {
 #pragma pack()
 #endif
 
-typedef uint32_t (*interrupt_handler_t)( uint32_t esp );
+struct interrupt_t;
 
-typedef struct {
+typedef uint32_t (*interrupt_handler_t)( struct interrupt_t *interrupt, uint32_t esp );
+
+typedef struct interrupt_t {
 	interrupt_descriptor_table_pointer_t idt_pointer;
 	interrupt_gate_descriptor_t descriptor_table[NOF_INTERRUPTS];
 	interrupt_handler_t interrupt_handler[NOF_INTERRUPTS];
@@ -66,12 +68,14 @@ void interrupts_register_interrupt( interrupt_t *interrupt,
 	interrupt_handler_t handler );
 void interrupts_load_idt( interrupt_descriptor_table_pointer_t *idt_pointer );
 
-uint32_t interrupts_handle_interrupt( uint8_t interrupt_no, uint32_t esp );
+uint32_t interrupts_handle_interrupt( interrupt_t *interrupt, uint8_t interrupt_no, uint32_t esp );
+
+uint32_t interrupts_handle_static_interrupt( uint8_t interrupt_no, uint32_t esp );
 
-uint32_t interrupts_exception_division_by_zero( uint32_t esp );
+uint32_t interrupts_exception_division_by_zero( interrupt_t *interrupt, uint32_t esp );
 
-uint32_t interrupts_interrupt_PIT( uint32_t esp );
-uint32_t interrupts_interrupt_keyboard( uint32_t esp );
+uint32_t interrupts_interrupt_PIT( interrupt_t *interrupt, uint32_t esp );
+uint32_t interrupts_interrupt_keyboard( interrupt_t *interrupt, uint32_t esp );
 
 void interrupts_ignore_request( );
 void interrupts_handle_exception_0x00( );
-- 
cgit v1.2.3-54-g00ecf