cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / x86_64-linux-gnu / asm / ldt.h

diff --git a/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/asm/ldt.h b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/asm/ldt.h
new file mode 100644 (file)
index 0000000..d62ac5d
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/asm/ldt.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * 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__
+       /*
+        * Because this bit is not present in 32-bit user code, user
+        * programs can pass uninitialized values here.  Therefore, in
+        * any context in which a user_desc comes from a 32-bit program,
+        * the kernel must act as though lm == 0, regardless of the
+        * actual value.
+        */
+       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 */