lunaix-os/arch/x86/arch.c

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