xnu-1699.24.23.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 7bcf98bd690daf0f380eb074d1aa2eeb53bd0874..97b04c9cb2b06f1f1041c4068cdfcad7c76deace 100644 (file)
--- a/osfmk/i386/mp_desc.h
+++ b/osfmk/i386/mp_desc.h
@@ -1,16 +1,19 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @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
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * 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.
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @OSF_COPYRIGHT@
@@ -57,8 +60,10 @@
 #ifndef        _I386_MP_DESC_H_
 #define        _I386_MP_DESC_H_
 
-#include <cpus.h>
 #include <mach_kdb.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
 
 /*
  * Multiprocessor i386/i486 systems use a separate copy of the
@@ -78,41 +83,61 @@
  * 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;
-};
+typedef struct cpu_desc_table {
+       struct fake_descriptor  idt[IDTSZ] __attribute__ ((aligned (16)));
+       struct fake_descriptor  gdt[GDTSZ] __attribute__ ((aligned (16)));
+       struct i386_tss         ktss       __attribute__ ((aligned (16)));
+       struct i386_tss         dbtss      __attribute__ ((aligned (16)));
+       struct sysenter_stack   sstk;
+} cpu_desc_table_t;
 
-/*
- * They are pointed to by a per-processor array.
- */
-extern struct mp_desc_table    *mp_desc_table[NCPUS];
+typedef struct cpu_desc_table64 {
+       struct fake_descriptor64 idt[IDTSZ]      __attribute__ ((aligned (16)));
+       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                 dfstk[PAGE_SIZE] __attribute__ ((aligned (16)));
+} cpu_desc_table64_t;
 
-/*
- * The kernel TSS gets its own pointer.
- */
-extern struct i386_tss         *mp_ktss[NCPUS];
-#if    MACH_KDB
-extern struct i386_tss         *mp_dbtss[NCPUS];
-#endif /* MACH_KDB */
+#define        current_gdt()   (current_cpu_datap()->cpu_desc_index.cdi_gdt.ptr)
+#define        current_idt()   (current_cpu_datap()->cpu_desc_index.cdi_idt.ptr)
+#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        current_sstk()  (current_cpu_datap()->cpu_desc_index.cdi_sstk)
 
-/*
- * So does the GDT and IDT.
- */
-extern struct fake_descriptor  *mp_gdt[NCPUS];
-extern struct fake_descriptor  *mp_idt[NCPUS];
-extern struct fake_descriptor  *mp_ldt[NCPUS];
+#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) \
+       (&((struct real_descriptor *)current_ldt())[sel_idx(sel)])
 
-/*
- * Each CPU calls this routine to set up its descriptor tables.
- */
+extern void    cpu_mode_init(cpu_data_t *cdp);
+
+extern void    cpu_desc_init(cpu_data_t *cdp);
+extern void    cpu_desc_init64(cpu_data_t *cdp);
+extern void    cpu_desc_load(cpu_data_t *cdp);
+extern void    cpu_desc_load64(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,
+                             uint16_t ss,
+                             uint16_t ds,
+                             uint16_t es,
+                             uint16_t fs,
+                             uint16_t gs);
 
-extern struct mp_desc_table *  mp_desc_init(
-                                       int             cpu);
-extern void                    interrupt_stack_alloc(void);
+__END_DECLS
 
-#endif /* _I386_MP_DESC_H_ */
+#endif /* _X86_64_MP_DESC_H_ */