Porting PicoTCP WIP

kernel/proc/proc.c

@@ -16,12 +16,35 @@
 #include "sysdefs/proc.h"
 #include "sysdefs/fs.h"
 #include "time/time.h"
+#include "pico_stack.h"
 
 #define PROC_REAPER_FREQ 30
 
 uint64_t pids = 0;
 uint64_t sched_ticks = 0;
 
+uint64_t uptime_ms = 0;
+uint64_t last_secs = 0;
+
+uint64_t get_wallclock_secs(void) {
+  Time t;
+  time_get(&t);
+  return time_totalhours(&t) * 3600 + t.minute * 60 + t.second;
+}
+
+void update_time(void) {
+  uint64_t now_s = get_wallclock_secs();
+  uint64_t delta_s;
+
+  if (now_s >= last_secs)
+    delta_s = now_s - last_secs;
+  else
+    delta_s = 0;
+
+  uptime_ms += (uint64_t)delta_s * 1000;
+  last_secs = now_s;
+}
+
 Procs PROCS;
 
 bool proc_checkelf(uint8_t *elf) {
@@ -223,6 +246,8 @@ void proc_reaper(void) {
 void proc_sched(void *cpustate) {
   hal_intr_disable();
   sched_ticks++;
+  update_time();
+  pico_stack_tick();
 
   IntrStackFrame *frame = cpustate;