Working on scheduling

Makefile

@@ -20,8 +20,7 @@ CFLAGS += -Wall \
 	-I src/include \
 	-O0 \
 	-ggdb3 \
-	-g \
+	-g 
-	#-fno-omit-frame-pointer
 CDEBUG = -g
 LDFLAGS += -m elf_x86_64 \
     -nostdlib \
@@ -95,9 +94,9 @@ all:
 			-no-emul-boot -boot-load-size 4 -boot-info-table \
 			--efi-boot limine-uefi-cd.bin \
 			-efi-boot-part --efi-boot-image --protective-msdos-label \
-			iso_root -o $(BUILD_DIR)/SFB25.iso
+			iso_root -o $(BUILD_DIR)/Neobbo.iso
 	# Install Limine stage 1 and 2 for legacy BIOS boot.
-	./limine/limine bios-install $(BUILD_DIR)/SFB25.iso
+	./limine/limine bios-install $(BUILD_DIR)/Neobbo.iso
 disk:
 	dd if=/dev/zero of=disk.img bs=1M count=128
 elftest:

autodebug.sh

@@ -12,7 +12,7 @@ qemu-system-x86_64 -s -S "$@" &
 
 sleep 1
 
-"$termname" -e gdb -ex 'target remote localhost:1234' -ex 'break _start' -ex 'continue' build/SFB25.elf
+"$termname" -e gdb -ex 'target remote localhost:1234' -ex 'break _start' build/Neobbo.elf
 
 
 

limine.conf

@@ -7,7 +7,7 @@ timeout: 0
     protocol: limine
  
     # Path to the kernel to boot. boot:/// represents the partition on which limine.cfg is located.
-    kernel_path: boot():/SFB25.elf
+    kernel_path: boot():/Neobbo.elf
  
 # Same thing, but without KASLR.
 /Neobbo (KASLR off)
@@ -17,4 +17,4 @@ timeout: 0
     kaslr: no
  
     # Path to the kernel to boot. boot:/// represents the partition on which limine.cfg is located.
-    kernel_path: boot():/SFB25.elf
+    kernel_path: boot():/Neobbo.elf

src/flanterm

@@ -1 +1 @@
-Subproject commit 55d228ff16234513b0df0dd12de8bc58160fc196
+Subproject commit cc71c677566453be4d1e821ede227a101868638c

src/hal/idt.c

@@ -239,9 +239,12 @@ void interrupt_handler(interrupt_frame *r){
 
     if(r->int_no == 69 && get_cpu_struct_initialized()
      && get_cpu_struct()->scheduler_initialized){
+        if(get_cpu_struct()->current_process->state == RUNNING){
             enter_scheduler();
         }
         
+    }
+
     if(r->int_no == 70){
         for(;;){
             asm("cli;hlt");

src/main.c

@@ -75,7 +75,7 @@ void _start(void){
             NULL, NULL,
             NULL, 0, 0, 1,
             0, 0,
-            0
+            0, 0
     );
 
     kprintf("Welcome to Neobbo{n}");

src/scheduler/sched.asm

@@ -3,19 +3,11 @@ global switch_context
 global get_context
 global restore_stack
 
-;  switch_context(struct context **old, *struct context new)
+;  switch_context(struct context **old, struct context *new)
 ;                       ^RDI                ^RSI 
 switch_context:
-    push rdi
-    push rsi
-    push rdx
-    push rcx
     push rbx
     push rbp
-    push r8
-    push r9
-    push r10
-    push r11
     push r12
     push r13
     push r14
@@ -28,15 +20,7 @@ switch_context:
     pop r14
     pop r13
     pop r12
-    pop r11
-    pop r10
-    pop r9
-    pop r8
     pop rbp
     pop rbx
-    pop rcx
-    pop rdx
-    pop rsi
-    pop rdi
     ret
 

src/scheduler/sched.c

@@ -16,20 +16,15 @@ int next_pid = 1;
 
 void idle_task(){
     for(;;){
-        kprintf("Idle!!1\n");
     }
 }
 
 void test_task(){
-    for(;;){
     kprintf("Hello world from scheduled task!\n");
-    }
 }
 
 void best_task(){
-    for(;;){
     kprintf("Hello world I am best\n");
-    }
 }
 
 /* Setup a process structure */
@@ -115,19 +110,18 @@ void scheduler_init(){
     for(;;){
         for(; i < PROC_MAX; i++){
             if(proc_list[i].state == READY){
+                asm("sti");
                 proc *prev = state->current_process;
                 prev->state = READY;
                 state->current_process = &proc_list[i];
                 state->current_process->state = RUNNING;
                 switch_context(&(get_cpu_struct()->scheduler_context), get_cpu_struct()->current_process->context);
-
             }
         }
-        i = 1;
+        i = 0;
     }
 }
 
 void enter_scheduler(){
-    switch_context(&get_cpu_struct()->current_process->context, (get_cpu_struct()->scheduler_context));
+    switch_context(&get_cpu_struct()->current_process->context, get_cpu_struct()->scheduler_context);
-    
 }

src/scheduler/sched.h

@@ -10,7 +10,7 @@ typedef enum proc_state {
 }proc_state;
 
 typedef struct context {
-    uint64_t r15, r14, r13, r12, r11, r10, r9, r8, rbp, rbx, rcx, rdx, rsi, rdi, rip;
+    uint64_t r15, r14, r13, r12, rbp, rbx, rip;
 } context;
 
 typedef struct proc {