mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
fbdf216155
ldt-{i386,x86_64}.h is made of two different parts - some code for parsing of
LDT descriptors, which is arch-dependant, and the code to handle uml_ldt_t (an
LDT block inside UML), which is mostly arch-independant (among x86 and x86_64,
at least).
Join the common part in a single file (ldt.h) and split the rest away
(host_ldt-{i386,x86_64}.h).
This is needed because processor.h, with next patches, will start including
the LDT descriptor parsing macros in host_ldt.h, but it can't include ldt.h
because it uses semaphores (and to define semaphores one must first include
processor.h!).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
35 lines
881 B
C
35 lines
881 B
C
#ifndef __ASM_HOST_LDT_I386_H
|
|
#define __ASM_HOST_LDT_I386_H
|
|
|
|
#include "asm/arch/ldt.h"
|
|
|
|
/*
|
|
* macros stolen from include/asm-i386/desc.h
|
|
*/
|
|
#define LDT_entry_a(info) \
|
|
((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
|
|
|
|
#define LDT_entry_b(info) \
|
|
(((info)->base_addr & 0xff000000) | \
|
|
(((info)->base_addr & 0x00ff0000) >> 16) | \
|
|
((info)->limit & 0xf0000) | \
|
|
(((info)->read_exec_only ^ 1) << 9) | \
|
|
((info)->contents << 10) | \
|
|
(((info)->seg_not_present ^ 1) << 15) | \
|
|
((info)->seg_32bit << 22) | \
|
|
((info)->limit_in_pages << 23) | \
|
|
((info)->useable << 20) | \
|
|
0x7000)
|
|
|
|
#define LDT_empty(info) (\
|
|
(info)->base_addr == 0 && \
|
|
(info)->limit == 0 && \
|
|
(info)->contents == 0 && \
|
|
(info)->read_exec_only == 1 && \
|
|
(info)->seg_32bit == 0 && \
|
|
(info)->limit_in_pages == 0 && \
|
|
(info)->seg_not_present == 1 && \
|
|
(info)->useable == 0 )
|
|
|
|
#endif
|