b984fa41df
This reverts commit eff1369cab
.
This was in a working branch and I only intended to commit
exception.c. But I committed the exact inverse. Sorry.
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
|
|
#ifndef _I386_TYPES_H
|
|
#define _I386_TYPES_H
|
|
|
|
#include <minix/sys_config.h>
|
|
#include <machine/stackframe.h>
|
|
#include <machine/fpu.h>
|
|
#include <sys/cdefs.h>
|
|
|
|
struct segdesc_s { /* segment descriptor for protected mode */
|
|
u16_t limit_low;
|
|
u16_t base_low;
|
|
u8_t base_middle;
|
|
u8_t access; /* |P|DL|1|X|E|R|A| */
|
|
u8_t granularity; /* |G|X|0|A|LIMT| */
|
|
u8_t base_high;
|
|
};
|
|
|
|
#define LDT_SIZE 2 /* CS and DS */
|
|
|
|
/* Fixed local descriptors. */
|
|
#define CS_LDT_INDEX 0 /* process CS */
|
|
#define DS_LDT_INDEX 1 /* process DS=ES=FS=GS=SS */
|
|
|
|
typedef struct segframe {
|
|
reg_t p_ldt_sel; /* selector in gdt with ldt base and limit */
|
|
reg_t p_cr3; /* page table root */
|
|
u32_t *p_cr3_v;
|
|
struct segdesc_s p_ldt[LDT_SIZE]; /* CS, DS and remote */
|
|
} segframe_t;
|
|
|
|
/* fpu_state_s is used in kernel proc table.
|
|
* Any changes in this structure requires changes in sconst.h,
|
|
* since this structure is used in proc structure. */
|
|
struct fpu_state_s {
|
|
union fpu_state_u *fpu_save_area_p; /* 16-aligned fpu_save_area */
|
|
/* fpu_image includes 512 bytes of image itself and
|
|
* additional 15 bytes required for manual 16-byte alignment. */
|
|
char fpu_image[527];
|
|
};
|
|
|
|
#define INMEMORY(p) (!p->p_seg.p_cr3 || get_cpulocal_var(ptproc) == p)
|
|
|
|
typedef u32_t atomic_t; /* access to an aligned 32bit value is atomic on i386 */
|
|
|
|
#endif /* #ifndef _I386_TYPES_H */
|
|
|