replace () with (void) in function definitions

`()` means that any amt of arguments will be accepted, which isn't what
i want

14 files changed, 27 insertions, 27 deletions

diff --git a/src/kernel/arch/generic.h b/src/kernel/arch/generic.h
index 1427658..1fa716b 100644
--- a/src/kernel/arch/generic.h
+++ b/src/kernel/arch/generic.h
@@ -13,14 +13,14 @@
 extern char _bss_end;
 
 __attribute__((noreturn))
-void halt_cpu();
+void halt_cpu(void);
 
 // src/arch/i386/sysenter.s
 _Noreturn void sysexit(struct registers);
 int syscall_handler(int, int, int, int);
 
 // all of those can allocate memory
-struct pagedir *pagedir_new();
+struct pagedir *pagedir_new(void);
 struct pagedir *pagedir_copy(const struct pagedir *orig);
 void pagedir_map(struct pagedir *dir, void *virt, void *phys,
                  bool user, bool writeable);
diff --git a/src/kernel/arch/i386/gdt.h b/src/kernel/arch/i386/gdt.h
index bcb9870..5e40cd7 100644
--- a/src/kernel/arch/i386/gdt.h
+++ b/src/kernel/arch/i386/gdt.h
@@ -12,5 +12,5 @@ enum {
 	SEG_end
 };
 
-void gdt_init();
+void gdt_init(void);
 void gdt_farjump(int segment);
diff --git a/src/kernel/arch/i386/gdt/gdt.c b/src/kernel/arch/i386/gdt/gdt.c
index e4cd3ef..6958bb5 100644
--- a/src/kernel/arch/i386/gdt/gdt.c
+++ b/src/kernel/arch/i386/gdt/gdt.c
@@ -42,8 +42,8 @@ static struct tss_entry TSS;
 static struct lgdt_arg lgdt_arg; // probably doesn't need to be global
 
 static void gdt_fillout(struct gdt_entry* entry, uint8_t ring, bool code);
-static void gdt_prepare();
-static void gdt_load();
+static void gdt_prepare(void);
+static void gdt_load(void);
 
 
 static void gdt_fillout(struct gdt_entry* entry, uint8_t ring, bool code) {
@@ -69,7 +69,7 @@ static void gdt_fillout(struct gdt_entry* entry, uint8_t ring, bool code) {
 	};
 }
 
-static void gdt_prepare() {
+static void gdt_prepare(void) {
 	GDT[SEG_null].present = 0;
 
 	gdt_fillout(&GDT[SEG_r0code], 0, true);
@@ -102,7 +102,7 @@ static void gdt_prepare() {
 	};
 }
 
-static void gdt_load() {
+static void gdt_load(void) {
 	lgdt_arg.limit = sizeof(GDT) - 1;
 	lgdt_arg.base = (uintptr_t) &GDT;
 	asm("lgdt (%0)" 
@@ -121,7 +121,7 @@ static void gdt_load() {
 	    : : "r" (SEG_r0data << 3) : "memory");
 }
 
-void gdt_init() {
+void gdt_init(void) {
 	gdt_prepare();
 	gdt_load();
 }
diff --git a/src/kernel/arch/i386/interrupts/idt.c b/src/kernel/arch/i386/interrupts/idt.c
index 75c221f..d27bc61 100644
--- a/src/kernel/arch/i386/interrupts/idt.c
+++ b/src/kernel/arch/i386/interrupts/idt.c
@@ -27,12 +27,12 @@ struct lidt_arg {
 static struct idt_entry IDT[256];
 static struct lidt_arg lidt_arg;
 
-static void idt_prepare();
-static void idt_load();
-static void idt_test();
+static void idt_prepare(void);
+static void idt_load(void);
+static void idt_test(void);
 
 
-static void idt_prepare() {
+static void idt_prepare(void) {
 	uintptr_t offset;
 	for (int i = 0; i < 256; i++) {
 		offset = (uintptr_t) &_isr_stubs + i * 8;
@@ -50,18 +50,18 @@ static void idt_prepare() {
 	}
 }
 
-static void idt_load() {
+static void idt_load(void) {
 	lidt_arg.limit = sizeof(IDT) - 1;
 	lidt_arg.base = (uintptr_t) &IDT;
 	asm("lidt (%0)" : : "r" (&lidt_arg) : "memory");
 }
 
-static void idt_test() {
+static void idt_test(void) {
 	asm("int $0x34" : : : "memory");
 	assert(isr_test_interrupt_called);
 }
 
-void idt_init() {
+void idt_init(void) {
 	idt_prepare();
 	idt_load();
 	idt_test();
diff --git a/src/kernel/arch/i386/interrupts/idt.h b/src/kernel/arch/i386/interrupts/idt.h
index 5627657..6576cf9 100644
--- a/src/kernel/arch/i386/interrupts/idt.h
+++ b/src/kernel/arch/i386/interrupts/idt.h
@@ -1,3 +1,3 @@
 #pragma once
 
-void idt_init();
+void idt_init(void);
diff --git a/src/kernel/arch/i386/pagedir.c b/src/kernel/arch/i386/pagedir.c
index 61ad170..486d2a2 100644
--- a/src/kernel/arch/i386/pagedir.c
+++ b/src/kernel/arch/i386/pagedir.c
@@ -39,7 +39,7 @@ struct pagedir {
 } __attribute__((packed));
 
 
-struct pagedir *pagedir_new() {
+struct pagedir *pagedir_new(void) {
 	struct pagedir *dir = page_alloc(1);
 	for (int i = 0; i < 1024; i++)
 		dir->e[i].present = 0;
diff --git a/src/kernel/arch/i386/sysenter.c b/src/kernel/arch/i386/sysenter.c
index b24c857..2470979 100644
--- a/src/kernel/arch/i386/sysenter.c
+++ b/src/kernel/arch/i386/sysenter.c
@@ -3,7 +3,7 @@
 
 struct registers _sysexit_regs; // a hack
 
-extern void _sysexit_real();
+extern void _sysexit_real(void);
 
 void sysexit(struct registers regs) {
 	_sysexit_regs = regs;
@@ -13,7 +13,7 @@ void sysexit(struct registers regs) {
 	__builtin_unreachable();
 }
 
-_Noreturn void sysenter_stage2() {
+_Noreturn void sysenter_stage2(void) {
 	uint64_t val;
 	struct registers *regs = &process_current->regs;
 
diff --git a/src/kernel/arch/i386/sysenter.h b/src/kernel/arch/i386/sysenter.h
index b531fe8..b731c67 100644
--- a/src/kernel/arch/i386/sysenter.h
+++ b/src/kernel/arch/i386/sysenter.h
@@ -1,2 +1,2 @@
 #pragma once
-void sysenter_setup();
+void sysenter_setup(void);
diff --git a/src/kernel/arch/i386/tty/serial.c b/src/kernel/arch/i386/tty/serial.c
index 6bfe212..a259750 100644
--- a/src/kernel/arch/i386/tty/serial.c
+++ b/src/kernel/arch/i386/tty/serial.c
@@ -4,7 +4,7 @@
 
 const int COM1 = 0x3f8;
 
-void serial_init() {
+void serial_init(void) {
 	// see https://www.sci.muni.cz/docs/pc/serport.txt
 
 	port_outb(COM1 + 1, 0x00); // disable interrupts, we won't be using them
diff --git a/src/kernel/arch/i386/tty/serial.h b/src/kernel/arch/i386/tty/serial.h
index ac7131b..2332113 100644
--- a/src/kernel/arch/i386/tty/serial.h
+++ b/src/kernel/arch/i386/tty/serial.h
@@ -2,4 +2,4 @@
 #include <stddef.h>
 
 void serial_write(const char *buf, size_t len);
-void serial_init();
+void serial_init(void);
diff --git a/src/kernel/arch/i386/tty/tty.c b/src/kernel/arch/i386/tty/tty.c
index 89a8602..b469285 100644
--- a/src/kernel/arch/i386/tty/tty.c
+++ b/src/kernel/arch/i386/tty/tty.c
@@ -2,7 +2,7 @@
 #include <kernel/arch/i386/tty/vga.h>
 #include <kernel/arch/log.h>
 
-void tty_init() {
+void tty_init(void) {
 	vga_clear();
 	serial_init();
 
diff --git a/src/kernel/arch/i386/tty/vga.c b/src/kernel/arch/i386/tty/vga.c
index 3cd1034..24bbf98 100644
--- a/src/kernel/arch/i386/tty/vga.c
+++ b/src/kernel/arch/i386/tty/vga.c
@@ -9,7 +9,7 @@ static const size_t     vga_len = 80 * 25;
 static struct vga_cell *vga     = (void*) 0xB8000;
 static size_t           vga_pos = 0;
 
-static void vga_scroll() {
+static void vga_scroll(void) {
 	for (size_t i = 0; i < vga_len - 80; i++)
 		vga[i] = vga[i + 80];
 	vga_pos -= 80;
@@ -26,7 +26,7 @@ void vga_write(const char *buf, size_t len) {
 		vga_putchar(buf[i]);
 }
 
-void vga_clear() {
+void vga_clear(void) {
 	for (size_t i = 0; i < vga_len; i++)
 		vga[i].c = ' ';
 	vga_pos = 0;
diff --git a/src/kernel/arch/i386/tty/vga.h b/src/kernel/arch/i386/tty/vga.h
index c8747c7..69b1ab7 100644
--- a/src/kernel/arch/i386/tty/vga.h
+++ b/src/kernel/arch/i386/tty/vga.h
@@ -2,4 +2,4 @@
 #include <stddef.h>
 
 void vga_write(const char *buf, size_t len);
-void vga_clear();
+void vga_clear(void);
diff --git a/src/kernel/arch/log.h b/src/kernel/arch/log.h
index ea76292..ef8cb17 100644
--- a/src/kernel/arch/log.h
+++ b/src/kernel/arch/log.h
@@ -1,7 +1,7 @@
 #pragma once
 #include <stddef.h>
 
-void tty_init();
+void tty_init(void);
 void tty_write(const char *buf, size_t len);
 
 static inline void _tty_hex(const char *buf, size_t len) {