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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/x86/include/asm/ldt.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/x86/include/asm/ldt.h')
-rw-r--r--arch/x86/include/asm/ldt.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/x86/include/asm/ldt.h b/arch/x86/include/asm/ldt.h
new file mode 100644
index 00000000..46727eb3
--- /dev/null
+++ b/arch/x86/include/asm/ldt.h
@@ -0,0 +1,40 @@
+/*
+ * ldt.h
+ *
+ * Definitions of structures used with the modify_ldt system call.
+ */
+#ifndef _ASM_X86_LDT_H
+#define _ASM_X86_LDT_H
+
+/* Maximum number of LDT entries supported. */
+#define LDT_ENTRIES 8192
+/* The size of each LDT entry. */
+#define LDT_ENTRY_SIZE 8
+
+#ifndef __ASSEMBLY__
+/*
+ * Note on 64bit base and limit is ignored and you cannot set DS/ES/CS
+ * not to the default values if you still want to do syscalls. This
+ * call is more for 32bit mode therefore.
+ */
+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 /* !__ASSEMBLY__ */
+#endif /* _ASM_X86_LDT_H */