PMM and liballoc port

kernel/amd64/bootmain.c

@@ -1,11 +1,18 @@
 #include <limine/limine.h>
 #include <amd64/init.h>
 #include <sys/debug.h>
+#include <mm/pmm.h>
+#include <mm/liballoc.h>
 
 void bootmain(void) {
   amd64_init();
-
   DEBUG("Hello from amd64!\n");
 
+  pmm_init();
+
+  int *a = malloc(sizeof(int));
+  *a = 6969;
+  DEBUG("a=%p, *a=%d\n", a, *a);
+
   for (;;);
 }

kernel/amd64/mm.h

@@ -0,0 +1,6 @@
+#ifndef _KERNEL_AMD64_MM_H
+#define _KERNEL_AMD64_MM_H
+
+#define PAGE_SIZE   4096
+
+#endif // _KERNEL_AMD64_MM_H

kernel/amd64/spin_lock.c

@@ -0,0 +1,5 @@
+#include <sys/spin_lock.h>
+
+void spin_lock_relax(void) {
+  __asm__ volatile("pause");
+}

kernel/amd64/src.mk

@@ -2,10 +2,12 @@ c += amd64/bootmain.c \
 		 amd64/init.c \
 		 amd64/tss.c \
 		 amd64/io.c \
-		 amd64/debug.c
+		 amd64/debug.c \
+		 amd64/spin_lock.c
 
 o += amd64/bootmain.o \
 		 amd64/init.o \
 		 amd64/tss.o \
 		 amd64/io.o \
-		 amd64/debug.o
+		 amd64/debug.o \
+		 amd64/spin_lock.o