* Copyright (c) 2000-2009 Apple 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
* 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
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* 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@
*/
-/*
+/*
* 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.
- *
+ *
* 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
- *
+ *
* 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.
*/
/*
*/
-#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
/*
* 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.
*/
-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;
-
+#define FSTK_SZ (PAGE_SIZE/2)
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)));
+ 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;
-#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)
+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 current_ktss64() ((struct x86_64_tss *) current_ktss())
+#define current_sstk64() ((addr64_t *) current_sstk())
-#define gdt_desc_p(sel) \
+#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 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);
-
-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 ldt_desc_p(sel) \
+ (¤t_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,
- 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
-#endif /* _X86_64_MP_DESC_H_ */
+#endif /* _X86_64_MP_DESC_H_ */
projects / apple / xnu.git / blobdiff