fix some compiler warnings

cpu/exception.c

@@ -173,7 +173,7 @@ static void isr31(struct interrupt_descriptor_32 *frame) {
 }
 
 
-void exception_handlers_init() {
+void exception_handlers_init(void) {
     idt_register_handler(0, (size_t)isr0);
     idt_register_handler(1, (size_t)isr1);
     idt_register_handler(2, (size_t)isr2);

cpu/exception.h

@@ -1,6 +1,6 @@
 #ifndef _EXCEPTION_H
 #define _EXCEPTION_H
 
-void exception_handlers_init();
+void exception_handlers_init(void);
 
 #endif

cpu/idt.c

@@ -6,7 +6,7 @@
 struct interrupt_descriptor_32 idt[256];
 static size_t idt_ptr[2];
 
-void idt_init() {
+void idt_init(void) {
     size_t idt_address = (size_t)idt;
     idt_ptr[0] = (sizeof (struct interrupt_descriptor_32) * 256) + ((idt_address & 0xffff) << 16);
     idt_ptr[1] = idt_address >> 16;

cpu/idt.h

@@ -16,7 +16,7 @@ struct interrupt_descriptor_32 {
     uint16_t offset_2;        // offset bits 16..31
 } __attribute__((__packed__)); 
 
-void idt_init();
+void idt_init(void);
 void idt_register_handler(uint8_t interrupt, size_t address);
 
 #endif

cpu/pic.c

@@ -2,8 +2,6 @@
 #include "cpu/io.h"
 
 void pic_remap(uint8_t offset1, uint8_t offset2) {
-    uint8_t a1, a2;
- 
     outb(PIC1_COMMAND, ICW1_INIT | ICW1_ICW4);  // starts the initialization sequence (in cascade mode)
     io_wait();
     outb(PIC2_COMMAND, ICW1_INIT | ICW1_ICW4);

extra/grub.cfg

@@ -1,4 +1,4 @@
-menuentry "just some OS" {
+menuentry "hippOS" {
     multiboot /boot/kernel.bin
 }
 

ps2/keyboard.c

@@ -5,6 +5,7 @@
 #include "cpu/pic.h"
 #include "cpu/idt.h"
 #include "cpu/io.h"
+#include "gfx/terminal.h"
 
 const char us_map[128] = {
     0, 27, '1', '2', '3', '4', '5', '6', '7', '8',
@@ -47,7 +48,7 @@ const char us_map[128] = {
 
 __attribute__((interrupt))
 static void irq(struct interrupt_descriptor_32 *frame) {
-    char scancode = inb(0x60);
+    uint8_t scancode = inb(0x60);
 
     if (scancode & 128) {
         goto end; // ignore release scancode
@@ -58,7 +59,7 @@ end:
     pic_send_eoi(1);
 }
 
-void keyboard_init() {
+void keyboard_init(void) {
     pic_irq_clear_mask(1);
     idt_register_handler(33, (size_t)irq);
     inb(0x60);

ps2/keyboard.h

@@ -1,6 +1,6 @@
 #ifndef _KEYBOARD_H
 #define _KEYBOARD_H
 
-void keyboard_init();
+void keyboard_init(void);
 
 #endif

std/kstd.c

@@ -118,7 +118,8 @@ void kputs(const char* data) {
     kprintf("%s\n", data);
 }
 
-void kabort() {
+__attribute__((__noreturn__))
+void kabort(void) {
     kprintf("kabort(): halting kernel...\n");
     asm volatile("cli");
     asm volatile("hlt");

std/kstd.h

@@ -6,6 +6,8 @@
 int kputchar(int ic);
 int kprintf(const char* restrict format, ...);
 void kputs(const char* data);
-void kabort();
+
+__attribute__((__noreturn__))
+void kabort(void);
 
 #endif