[people/arne_f/kernel.git] / arch / x86 / um / shared / sysdep / tls.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _SYSDEP_TLS_H
#define _SYSDEP_TLS_H

#ifdef __UM_HOST__

/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which
 * may be named user_desc (but in 2.4 and in header matching its API was named
 * modify_ldt_ldt_s). */

typedef struct um_dup_user_desc {
	unsigned int  entry_number;
	unsigned int  base_addr;
	unsigned int  limit;
	unsigned int  seg_32bit:1;
	unsigned int  contents:2;
	unsigned int  read_exec_only:1;
	unsigned int  limit_in_pages:1;
	unsigned int  seg_not_present:1;
	unsigned int  useable:1;
#ifdef __x86_64__
	unsigned int  lm:1;
#endif
} user_desc_t;

#else /* __UM_HOST__ */

typedef struct user_desc user_desc_t;

#endif /* __UM_HOST__ */

extern int os_set_thread_area(user_desc_t *info, int pid);
extern int os_get_thread_area(user_desc_t *info, int pid);

#ifdef __i386__
#define GDT_ENTRY_TLS_MIN_I386 6
#define GDT_ENTRY_TLS_MIN_X86_64 12
#endif

#endif /* _SYSDEP_TLS_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
09e129a6 AV	2	#ifndef _SYSDEP_TLS_H
	3	#define _SYSDEP_TLS_H
	4
298e20ba	5	#ifdef __UM_HOST__
09e129a6 AV	6
	7	/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which
	8	* may be named user_desc (but in 2.4 and in header matching its API was named
	9	* modify_ldt_ldt_s). */
	10
	11	typedef struct um_dup_user_desc {
	12	unsigned int entry_number;
	13	unsigned int base_addr;
	14	unsigned int limit;
	15	unsigned int seg_32bit:1;
	16	unsigned int contents:2;
	17	unsigned int read_exec_only:1;
	18	unsigned int limit_in_pages:1;
	19	unsigned int seg_not_present:1;
	20	unsigned int useable:1;
	21	#ifdef __x86_64__
	22	unsigned int lm:1;
	23	#endif
	24	} user_desc_t;
	25
298e20ba	26	#else /* __UM_HOST__ */
09e129a6	27
09e129a6 AV	28	typedef struct user_desc user_desc_t;
09e129a6 AV	29
298e20ba	30	#endif /* __UM_HOST__ */
09e129a6	31
1bbd5f21 AV	32	extern int os_set_thread_area(user_desc_t *info, int pid);
	33	extern int os_get_thread_area(user_desc_t *info, int pid);
	34
858ba944	35	#ifdef __i386__
09e129a6 AV	36	#define GDT_ENTRY_TLS_MIN_I386 6
09e129a6 AV	37	#define GDT_ENTRY_TLS_MIN_X86_64 12
858ba944	38	#endif
09e129a6 AV	39
09e129a6 AV	40	#endif /* _SYSDEP_TLS_H */