diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-17 19:13:17 -0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-22 22:55:19 -0700 |
| commit | 8ede0bdb63305d3353efd97e9af6210afb05734e (patch) | |
| tree | a9500a323d0a2dcadca43c23b5c20186f6d9b724 /arch/um/include/asm/host_ldt-i386.h | |
| parent | 8569c9140bd41089f9b6be8837ca421102714a90 (diff) | |
| download | lwn-8ede0bdb63305d3353efd97e9af6210afb05734e.tar.gz lwn-8ede0bdb63305d3353efd97e9af6210afb05734e.zip | |
x86, um: initial part of asm-um move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/um/include/asm/host_ldt-i386.h')
| -rw-r--r-- | arch/um/include/asm/host_ldt-i386.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/um/include/asm/host_ldt-i386.h b/arch/um/include/asm/host_ldt-i386.h new file mode 100644 index 000000000000..b27cb0a9dd30 --- /dev/null +++ b/arch/um/include/asm/host_ldt-i386.h @@ -0,0 +1,34 @@ +#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 |