Generic sleep_micro() function

kernel/amd64/bootmain.c

@@ -7,6 +7,7 @@
 #include <mm/pmm.h>
 #include <sys/debug.h>
 #include <sys/mm.h>
+#include <sys/time.h>
 #include <uacpi/uacpi.h>
 
 #define UACPI_MEMORY_BUFFER_MAX 4096
@@ -29,7 +30,7 @@ void bootmain (void) {
 
   for (size_t i = 0; i < 1000; i++) {
     DEBUG ("i=%zu\n", i);
-    amd64_hpet_sleep_micro (1000000);
+    sleep_micro (1000000);
   }
 
   for (;;)

kernel/amd64/src.mk

@@ -8,7 +8,8 @@ c += amd64/bootmain.c \
 		 amd64/apic.c \
 		 amd64/msr.c \
 		 amd64/hpet.c \
-		 amd64/mm.c
+		 amd64/mm.c \
+		 amd64/time.c
 
 S += amd64/intr_stub.S \
 		 amd64/spin.S
@@ -25,4 +26,5 @@ o += amd64/bootmain.o \
 		 amd64/apic.o \
 		 amd64/msr.o \
 		 amd64/hpet.o \
-		 amd64/mm.o
+		 amd64/mm.o \
+		 amd64/time.o

kernel/amd64/time.c

@@ -0,0 +1,7 @@
+#include <libk/std.h>
+#include <sys/time.h>
+#include <amd64/hpet.h>
+
+void sleep_micro (size_t us) {
+  amd64_hpet_sleep_micro (us);
+}

kernel/sys/time.h

@@ -0,0 +1,9 @@
+#ifndef _KERNEL_SYS_TIME_H
+#define _KERNEL_SYS_TIME_H
+
+#include <libk/std.h>
+
+/* May take a timer peripheral lock! */
+void sleep_micro (size_t us);
+
+#endif // _KERNEL_SYS_TIME_H