include/arch/i386/include/archtypes.h

   1
   2 #ifndef _I386_TYPES_H
   3 #define _I386_TYPES_H
   4
   5 #include <minix/sys_config.h>
   6 #include <machine/stackframe.h>
   7 #include <machine/fpu.h>
   8 #include <sys/cdefs.h>
   9
  10 struct segdesc_s {              /* segment descriptor for protected mode */
  11   u16_t limit_low;
  12   u16_t base_low;
  13   u8_t base_middle;
  14   u8_t access;          /* |P|DL|1|X|E|R|A| */
  15   u8_t granularity;     /* |G|X|0|A|LIMT| */
  16   u8_t base_high;
  17 } __attribute__((packed));
  18
  19 struct gatedesc_s {
  20   u16_t offset_low;
  21   u16_t selector;
  22   u8_t pad;                     /* |000|XXXXX| ig & trpg, |XXXXXXXX| task g */
  23   u8_t p_dpl_type;              /* |P|DL|0|TYPE| */
  24   u16_t offset_high;
  25 } __attribute__((packed));
  26
  27 struct desctableptr_s {
  28   u16_t limit;
  29   u32_t base;
  30 } __attribute__((packed));
  31
  32 typedef struct segframe {
  33         reg_t   p_cr3;          /* page table root */
  34         u32_t   *p_cr3_v;
  35         char    *fpu_state;
  36         int     p_kern_trap_style;
  37 } segframe_t;
  38
  39 struct cpu_info {
  40         u8_t    vendor;
  41         u8_t    family;
  42         u8_t    model;
  43         u8_t    stepping;
  44         u32_t   freq;           /* in MHz */
  45         u32_t   flags[2];
  46 };
  47
  48 typedef u32_t atomic_t; /* access to an aligned 32bit value is atomic on i386 */
  49
  50 #endif /* #ifndef _I386_TYPES_H */
  51