lunaix-os/arch/x86/arch.c

   1 #include <hal/hwtimer.h>
   2
   3 #include <lunaix/spike.h>
   4 #include <lunaix/process.h>
   5
   6 #include <asm/x86_isrm.h>
   7
   8 #include "asm/x86.h"
   9 #include "asm/hart.h"
  10
  11 #include "hal/apic_timer.h"
  12
  13 void
  14 exception_init()
  15 {
  16     exception_install_handler();
  17     isrm_init();
  18     intr_routine_init();
  19 }
  20
  21 extern void
  22 syscall_hndlr(const struct hart_state* hstate);
  23
  24 void
  25 arch_preinit()
  26 {
  27     exception_init();
  28
  29     isrm_bindiv(LUNAIX_SYS_CALL, syscall_hndlr);
  30 }
  31
  32 struct hwtimer*
  33 select_platform_timer()
  34 {
  35     struct hwtimer* timer;
  36
  37     timer = apic_hwtimer_context();
  38     if (timer->supported(timer)) {
  39         return timer;
  40     }
  41
  42     // TODO select alternatives...
  43
  44     fail("no timer to use.");
  45 }
  46
  47 void
  48 update_tss()
  49 {
  50     extern struct x86_tss _tss;
  51 #ifdef CONFIG_ARCH_X86_64
  52     _tss.rsps[0] = (ptr_t)current_thread->hstate;
  53 #else
  54     _tss.esp0 = (u32_t)current_thread->hstate;
  55 #endif
  56 }