diff options
Diffstat (limited to 'libc/kernel/arch-x86/asm/ldt.h')
-rw-r--r-- | libc/kernel/arch-x86/asm/ldt.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/libc/kernel/arch-x86/asm/ldt.h b/libc/kernel/arch-x86/asm/ldt.h new file mode 100644 index 0000000..19b91ab --- /dev/null +++ b/libc/kernel/arch-x86/asm/ldt.h @@ -0,0 +1,41 @@ +/**************************************************************************** + **************************************************************************** + *** + *** This header was automatically generated from a Linux kernel header + *** of the same name, to make information necessary for userspace to + *** call into the kernel available to libc. It contains only constants, + *** structures, and macros generated from the original header, and thus, + *** contains no copyrightable information. + *** + **************************************************************************** + ****************************************************************************/ +#ifndef _ASM_X86_LDT_H +#define _ASM_X86_LDT_H + +#define LDT_ENTRIES 8192 + +#define LDT_ENTRY_SIZE 8 + +#ifndef __ASSEMBLY__ + +struct 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 +}; + +#define MODIFY_LDT_CONTENTS_DATA 0 +#define MODIFY_LDT_CONTENTS_STACK 1 +#define MODIFY_LDT_CONTENTS_CODE 2 + +#endif +#endif |