xnu-7195.60.75.tar.gz

[apple/xnu.git] / osfmk / i386 / mp_desc.h

diff --git a/osfmk/i386/mp_desc.h b/osfmk/i386/mp_desc.h
index ca147e689d606cd650ca671f57157b75608637fd..aeca023a574eb7d65792c9a4ff49e4a4856dbeb8 100644 (file)
--- a/osfmk/i386/mp_desc.h
+++ b/osfmk/i386/mp_desc.h
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

- * 
+ *

  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in


@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.

- * 
+ *

  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.

- * 
+ *

  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,


@@ -22,34 +22,34 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.

- * 
+ *

  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @OSF_COPYRIGHT@
  */
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @OSF_COPYRIGHT@
  */

-/* 
+/*

  * Mach Operating System
  * Copyright (c) 1991,1990 Carnegie Mellon University
  * All Rights Reserved.
  * Mach Operating System
  * Copyright (c) 1991,1990 Carnegie Mellon University
  * All Rights Reserved.

- * 
+ *

  * Permission to use, copy, modify and distribute this software and its
  * documentation is hereby granted, provided that both the copyright
  * notice and this permission notice appear in all copies of the
  * software, derivative works or modified versions, and any portions
  * thereof, and that both notices appear in supporting documentation.
  * Permission to use, copy, modify and distribute this software and its
  * documentation is hereby granted, provided that both the copyright
  * notice and this permission notice appear in all copies of the
  * software, derivative works or modified versions, and any portions
  * thereof, and that both notices appear in supporting documentation.

- * 
+ *

  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.

- * 
+ *

  * Carnegie Mellon requests users of this software to return to
  * Carnegie Mellon requests users of this software to return to

- * 
+ *

  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  *  School of Computer Science
  *  Carnegie Mellon University
  *  Pittsburgh PA 15213-3890
  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  *  School of Computer Science
  *  Carnegie Mellon University
  *  Pittsburgh PA 15213-3890

- * 
+ *

  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */


@@ -57,10 +57,9 @@
 /*
  */
 
 /*
  */
 

-#ifndef        _I386_MP_DESC_H_
-#define        _I386_MP_DESC_H_
+#ifndef _I386_MP_DESC_H_
+#define _I386_MP_DESC_H_

 
 

-#include <mach_kdb.h>

 #include <sys/cdefs.h>
 
 __BEGIN_DECLS
 #include <sys/cdefs.h>
 
 __BEGIN_DECLS


@@ -80,96 +79,55 @@ __BEGIN_DECLS
 /*
  * The descriptor tables are together in a structure
  * allocated one per processor (except for the boot processor).
 /*
  * The descriptor tables are together in a structure
  * allocated one per processor (except for the boot processor).

- * Note that dbtss could be conditionalized on MACH_KDB, but
- * doing so increases misconfiguration risk.

  */
  */

-struct mp_desc_table {
-       struct fake_descriptor  idt[IDTSZ];     /* IDT */
-       struct fake_descriptor  gdt[GDTSZ];     /* GDT */
-       struct fake_descriptor  ldt[LDTSZ];     /* LDT */
-       struct i386_tss         ktss;
-       struct i386_tss         dbtss;
-};
-
-#define        current_gdt()   (current_cpu_datap()->cpu_desc_index.cdi_gdt)
-#define        current_idt()   (current_cpu_datap()->cpu_desc_index.cdi_idt)
-#define        current_ldt()   (current_cpu_datap()->cpu_desc_index.cdi_ldt)
-#define        current_ktss()  (current_cpu_datap()->cpu_desc_index.cdi_ktss)
-#define        current_dbtss() (current_cpu_datap()->cpu_desc_index.cdi_dbtss)
-
-#define        gdt_desc_p(sel) \
-       ((struct real_descriptor *)&current_gdt()[sel_idx(sel)])
-#define        ldt_desc_p(sel) \
-       ((struct real_descriptor *)&current_ldt()[sel_idx(sel)])
-
-extern void    mp_desc_init(cpu_data_t *cdp, boolean_t is_boot_cpu);
-
-static inline boolean_t
-valid_user_data_selector(uint16_t selector)
-{
-    sel_t      sel = selector_to_sel(selector);
-    
-    if (selector == 0)
-       return (TRUE);
-
-    if (sel.ti == SEL_LDT)
-       return (TRUE);
-    else if (sel.index < GDTSZ) {
-       if ((gdt_desc_p(selector)->access & ACC_PL_U) == ACC_PL_U)
-           return (TRUE);
-    }
-               
-    return (FALSE);
-}
-
-static inline boolean_t
-valid_user_code_selector(uint16_t selector)
-{
-    sel_t      sel = selector_to_sel(selector);
-    
-    if (selector == 0)
-       return (FALSE);
-
-    if (sel.ti == SEL_LDT) {
-       if (sel.rpl == USER_PRIV)
-           return (TRUE);
-    }
-    else if (sel.index < GDTSZ && sel.rpl == USER_PRIV) {
-       if ((gdt_desc_p(selector)->access & ACC_PL_U) == ACC_PL_U)
-           return (TRUE);
-    }
-
-    return (FALSE);
-}
-
-static inline boolean_t
-valid_user_stack_selector(uint16_t selector)
-{
-    sel_t      sel = selector_to_sel(selector);
-    
-    if (selector == 0)
-       return (FALSE);
-
-    if (sel.ti == SEL_LDT) {
-       if (sel.rpl == USER_PRIV)
-           return (TRUE);
-    }
-    else if (sel.index < GDTSZ && sel.rpl == USER_PRIV) {
-       if ((gdt_desc_p(selector)->access & ACC_PL_U) == ACC_PL_U)
-           return (TRUE);
-    }
-               
-    return (FALSE);
-}
+#define FSTK_SZ (PAGE_SIZE/2)
+typedef struct cpu_desc_table64 {
+       struct fake_descriptor  gdt[GDTSZ]       __attribute__ ((aligned(16)));
+       struct x86_64_tss       ktss             __attribute__ ((aligned(16)));
+       struct sysenter_stack   sstk             __attribute__ ((aligned(16)));
+       uint8_t                 *fstkp;
+} cpu_desc_table64_t;
+
+typedef struct {
+       uint8_t                 fstk[FSTK_SZ]  __attribute__ ((aligned(16)));
+} cpu_fault_stack_t;
+
+#define current_gdt()   (current_cpu_datap()->cpu_desc_index.cdi_gdtb.ptr)
+#define current_idt()   (current_cpu_datap()->cpu_desc_index.cdi_idtb.ptr)
+#define current_ldt()   (current_cpu_datap()->cpu_desc_index.cdi_ldtb)
+#define current_ktss()  (current_cpu_datap()->cpu_desc_index.cdi_ktssb)
+#define current_sstk()  (current_cpu_datap()->cpu_desc_index.cdi_sstkb)
+
+#define current_ktss64() ((struct x86_64_tss *) current_ktss())
+#define current_sstk64() ((addr64_t *) current_sstk())
+
+#define gdt_desc_p(sel) \
+       (&((struct real_descriptor *)current_gdt())[sel_idx(sel)])
+#define ldt_desc_p(sel) \
+       (&current_ldt()[sel_idx(sel)])
+
+extern void     cpu_syscall_init(cpu_data_t *cdp);
+
+extern void     cpu_desc_init(cpu_data_t *cdp);
+extern void     cpu_desc_load(cpu_data_t *cdp);
+
+extern boolean_t
+valid_user_data_selector(uint16_t selector);
+
+extern boolean_t
+valid_user_code_selector(uint16_t selector);
+
+extern boolean_t
+valid_user_stack_selector(uint16_t selector);

 
 extern boolean_t
 valid_user_segment_selectors(uint16_t cs,
 
 extern boolean_t
 valid_user_segment_selectors(uint16_t cs,

-                             uint16_t ss,
-                             uint16_t ds,
-                             uint16_t es,
-                             uint16_t fs,
-                             uint16_t gs);
+    uint16_t ss,
+    uint16_t ds,
+    uint16_t es,
+    uint16_t fs,
+    uint16_t gs);

 
 __END_DECLS
 
 
 __END_DECLS
 

-#endif /* _I386_MP_DESC_H_ */
+#endif  /* _X86_64_MP_DESC_H_ */