event.h File Reference

#include <types.h>
#include <arch/x86/interrupt.h>
#include "gdt.h"

Go to the source code of this file.

Data Structures
struct	__attribute__

Macros
#define	EXCEPTION_DIVIDE_ERROR   0
#define	EXCEPTION_DEBUG   1
#define	EXCEPTION_NMI   2
#define	EXCEPTION_BREAKPOINT   3
#define	EXCEPTION_OVERFLOW   4
#define	EXCEPTION_BOUNDRANGE   5
#define	EXCEPTION_INVALIDOPCODE   6
#define	EXCEPTION_NOMATH_COPROC   7
#define	EXCEPTION_DOUBLEFAULT   8
#define	EXCEPTION_COPSEG_OVERRUN   9
#define	EXCEPTION_INVALID_TSS   10
#define	EXCEPTION_SEGMENT_NOT_PRESENT   11
#define	EXCEPTION_STACKSEG_FAULT   12
#define	EXCEPTION_GENERAL_PROTECTION   13
#define	EXCEPTION_PAGEFAULT   14
#define	EXCEPTION_RESERVED   15
#define	EXCEPTION_FPU_FAULT   16
#define	EXCEPTION_ALIGNEMENT_CHECK   17
#define	EXCEPTION_MACHINE_CHECK   18
#define	EXCEPTION_SIMD_FAULT   19

Typedefs
typedef enum e_idte_type	e_idte_type

Enumerations
enum	e_idte_type { IDTE_TASK = 5, IDTE_INTERRUPT = 6, IDTE_TRAP = 7 }

Functions
void	pok_idt_set_gate (uint16_t index, uint16_t segsel, uint32_t offset, e_idte_type t, int dpl)
pok_ret_t	pok_idt_init ()
pok_ret_t	pok_exception_init ()
pok_ret_t	pok_event_init ()
pok_ret_t	pok_syscall_init ()

---

Macro Definition Documentation

#define EXCEPTION_ALIGNEMENT_CHECK   17

Definition at line 63 of file event.h.

#define EXCEPTION_BOUNDRANGE   5

Definition at line 51 of file event.h.

#define EXCEPTION_BREAKPOINT   3

Definition at line 49 of file event.h.

#define EXCEPTION_COPSEG_OVERRUN   9

Definition at line 55 of file event.h.

#define EXCEPTION_DEBUG   1

Definition at line 47 of file event.h.

#define EXCEPTION_DIVIDE_ERROR   0

Definition at line 46 of file event.h.

#define EXCEPTION_DOUBLEFAULT   8

Definition at line 54 of file event.h.

#define EXCEPTION_FPU_FAULT   16

Definition at line 62 of file event.h.

#define EXCEPTION_GENERAL_PROTECTION   13

Definition at line 59 of file event.h.

#define EXCEPTION_INVALID_TSS   10

Definition at line 56 of file event.h.

#define EXCEPTION_INVALIDOPCODE   6

Definition at line 52 of file event.h.

#define EXCEPTION_MACHINE_CHECK   18

Definition at line 64 of file event.h.

#define EXCEPTION_NMI   2

Definition at line 48 of file event.h.

#define EXCEPTION_NOMATH_COPROC   7

Definition at line 53 of file event.h.

#define EXCEPTION_OVERFLOW   4

Definition at line 50 of file event.h.

#define EXCEPTION_PAGEFAULT   14

Definition at line 60 of file event.h.

#define EXCEPTION_RESERVED   15

Definition at line 61 of file event.h.

#define EXCEPTION_SEGMENT_NOT_PRESENT   11

Definition at line 57 of file event.h.

#define EXCEPTION_SIMD_FAULT   19

Definition at line 65 of file event.h.

#define EXCEPTION_STACKSEG_FAULT   12

Definition at line 58 of file event.h.

---

Typedef Documentation

typedef enum e_idte_type e_idte_type

---

Enumeration Type Documentation

enum e_idte_type

Enumerator:

IDTE_TASK
IDTE_INTERRUPT
IDTE_TRAP

Definition at line 26 of file event.h.

{
  IDTE_TASK = 5,
  IDTE_INTERRUPT = 6,
  IDTE_TRAP = 7
} e_idte_type;

---

Function Documentation

pok_ret_t pok_event_init

(

)

Definition at line 31 of file event.c.

{
   pok_idt_init ();

#if defined (POK_NEEDS_DEBUG) || defined (POK_NEEDS_ERROR_HANDLING)
   pok_exception_init ();
#endif

   pok_syscall_init ();

   return (POK_ERRNO_OK);
}

pok_ret_t pok_exception_init

(

)

pok_ret_t pok_idt_init

(

)

Definition at line 44 of file event.c.

{
   sysdesc_t sysdesc;

   /* Clear table */
   memset(pok_idt, 0, sizeof (idt_entry_t) * IDT_SIZE);

   /* Load IDT */
   sysdesc.limit = sizeof (pok_idt);
   sysdesc.base = (uint32_t)pok_idt;

   asm ("lidt %0"
        :
        : "m" (sysdesc));

  return (POK_ERRNO_OK);
}

void pok_idt_set_gate	(	uint16_t	index,
		uint16_t	segsel,
		uint32_t	offset,
		e_idte_type	t,
		int	dpl
	)

Definition at line 62 of file event.c.

{
   pok_idt[index].offset_low   = (offset) & 0xFFFF;
   pok_idt[index].offset_high  = (offset >> 16) & 0xFFFF;
   pok_idt[index].segsel       = segsel;
   pok_idt[index].dpl          = dpl;
   pok_idt[index].type         = t;
   pok_idt[index].d            = 1;
   pok_idt[index].res0         = 0; /* reserved */
   pok_idt[index].res1         = 0; /* reserved */
   pok_idt[index].present   = 1;
}

pok_ret_t pok_syscall_init

(

)

Init system calls

Definition at line 83 of file syscalls.c.

{
   pok_idt_set_gate (POK_SYSCALL_INT_NUMBER,
                     GDT_CORE_CODE_SEGMENT << 3,
                     (uint32_t) syscall_gate,
                     IDTE_INTERRUPT,
                     3);

   return (POK_ERRNO_OK);
}