/*
- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 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_SEG_H_
-#define _I386_SEG_H_
-
-#include <mach_kdb.h>
-#ifndef ASSEMBLER
+#ifndef _I386_SEG_H_
+#define _I386_SEG_H_
+#ifndef __ASSEMBLER__
#include <stdint.h>
#include <mach/vm_types.h>
+#include <mach/vm_param.h>
#include <architecture/i386/sel.h>
/*
*/
static inline uint16_t
-sel_to_selector(sel_t sel)
+sel_to_selector(sel_t sel)
{
- union {
- sel_t sel;
- uint16_t selector;
- } tconv;
-
- tconv.sel = sel;
-
- return (tconv.selector);
+ union {
+ sel_t sel;
+ uint16_t selector;
+ } tconv;
+
+ tconv.sel = sel;
+
+ return tconv.selector;
}
static inline sel_t
selector_to_sel(uint16_t selector)
{
- union {
- uint16_t selector;
- sel_t sel;
- } tconv;
-
- tconv.selector = selector;
-
- return (tconv.sel);
+ union {
+ uint16_t selector;
+ sel_t sel;
+ } tconv;
+
+ tconv.selector = selector;
+
+ return tconv.sel;
}
-#define LDTSZ 8192 /* size of the kernel ldt in entries */
-#define LDTSZ_MIN SEL_TO_INDEX(USER_SETTABLE)
- /* kernel ldt entries */
+#define LDTSZ_MAX 8192 /* maximal size of the kernel ldt in entries */
+#define LDTSZ_DFL (128)
+#define LDTSZ (LDTSZ_MAX)
+#define LDTSZ_MIN SEL_TO_INDEX(USER_SETTABLE)
+/* kernel ldt entries */
-#if MACH_KDB
-#define GDTSZ 19
-#else
-#define GDTSZ 18
-#endif
+#define GDTSZ 19
/*
* Interrupt table is always 256 entries long.
*/
-#define IDTSZ 256
+#define IDTSZ 256
#include <sys/cdefs.h>
* Real segment descriptor.
*/
struct real_descriptor {
- uint32_t limit_low:16, /* limit 0..15 */
- base_low:16, /* base 0..15 */
- base_med:8, /* base 16..23 */
- access:8, /* access byte */
- limit_high:4, /* limit 16..19 */
- granularity:4, /* granularity */
- base_high:8; /* base 24..31 */
+ uint32_t limit_low:16, /* limit 0..15 */
+ base_low:16, /* base 0..15 */
+ base_med:8, /* base 16..23 */
+ access:8, /* access byte */
+ limit_high:4, /* limit 16..19 */
+ granularity:4, /* granularity */
+ base_high:8; /* base 24..31 */
};
struct real_descriptor64 {
- uint32_t limit_low16:16, /* limit 0..15 */
- base_low16:16, /* base 0..15 */
- base_med8:8, /* base 16..23 */
- access8:8, /* access byte */
- limit_high4:4, /* limit 16..19 */
- granularity4:4, /* granularity */
- base_high8:8, /* base 24..31 */
- base_top32:32, /* base 32..63 */
- reserved32:32; /* reserved/zero */
+ uint32_t limit_low16:16, /* limit 0..15 */
+ base_low16:16, /* base 0..15 */
+ base_med8:8, /* base 16..23 */
+ access8:8, /* access byte */
+ limit_high4:4, /* limit 16..19 */
+ granularity4:4, /* granularity */
+ base_high8:8, /* base 24..31 */
+ base_top32:32, /* base 32..63 */
+ reserved32:32; /* reserved/zero */
};
struct real_gate {
- uint32_t offset_low:16, /* offset 0..15 */
- selector:16,
- word_count:8,
- access:8,
- offset_high:16; /* offset 16..31 */
+ uint32_t offset_low:16, /* offset 0..15 */
+ selector:16,
+ word_count:8,
+ access:8,
+ offset_high:16; /* offset 16..31 */
};
struct real_gate64 {
- uint32_t offset_low16:16, /* offset 0..15 */
- selector16:16,
- IST:3,
- zeroes5:5,
- access8:8,
- offset_high16:16, /* offset 16..31 */
- offset_top32:32, /* offset 32..63 */
- reserved32:32; /* reserved/zero */
+ uint32_t offset_low16:16, /* offset 0..15 */
+ selector16:16,
+ IST:3,
+ zeroes5:5,
+ access8:8,
+ offset_high16:16, /* offset 16..31 */
+ offset_top32:32, /* offset 32..63 */
+ reserved32:32; /* reserved/zero */
};
+#define MAKE_REAL_DESCRIPTOR(base, lim, gran, acc) {\
+ .limit_low = lim & 0xffff, \
+ .limit_high = (lim >> 16) & 0xf, \
+ .base_low = base & 0xffff, \
+ .base_med = (base >> 16) & 0xff, \
+ .base_high = (base >> 24) & 0xff, \
+ .access = acc, \
+ .granularity = gran \
+}
+
/*
* We build descriptors and gates in a 'fake' format to let the
* fields be contiguous. We shuffle them into the real format
* at runtime.
*/
struct fake_descriptor {
- uint32_t offset:32; /* offset */
- uint32_t lim_or_seg:20; /* limit */
- /* or segment, for gate */
- uint32_t size_or_wdct:4; /* size/granularity */
- /* word count, for gate */
- uint32_t access:8; /* access */
+ uint32_t offset:32; /* offset */
+ uint32_t lim_or_seg:20; /* limit */
+ /* or segment, for gate */
+ uint32_t size_or_wdct:4; /* size/granularity */
+ /* word count, for gate */
+ uint32_t access:8; /* access */
};
struct fake_descriptor64 {
- uint32_t offset[2]; /* offset [0..31,32..63] */
- uint32_t lim_or_seg:20; /* limit */
- /* or segment, for gate */
- uint32_t size_or_IST:4; /* size/granularity */
- /* IST for gates */
- uint32_t access:8; /* access */
- uint32_t reserved:32; /* reserved/zero */
+ uint64_t offset64; /* offset [0..31,32..63] */
+ uint32_t lim_or_seg:20; /* limit */
+ /* or segment, for gate */
+ uint32_t size_or_IST:4; /* size/granularity */
+ /* IST for gates */
+ uint32_t access:8; /* access */
+ uint32_t reserved:32; /* reserved/zero */
};
-#define FAKE_UBER64(addr32) { (uint32_t) (addr32), KERNEL_UBER_BASE_HI32 }
-#define FAKE_COMPAT(addr32) { (uint32_t) (addr32), 0x0 }
-#define UBER64(addr32) ((addr64_t) (uintptr_t)addr32 + KERNEL_UBER_BASE)
+
+typedef struct __attribute__((packed)) {
+ uint16_t size;
+ void *ptr;
+} x86_64_desc_register_t;
+
+
/*
* Boot-time data for master (or only) CPU
*/
-extern struct fake_descriptor master_idt[IDTSZ];
-extern struct fake_descriptor master_gdt[GDTSZ];
-extern struct fake_descriptor master_ldt[LDTSZ];
-extern struct i386_tss master_ktss;
-extern struct sysenter_stack master_sstk;
+extern struct real_descriptor master_gdt[GDTSZ];
+extern struct real_descriptor master_ldt[];
+extern struct i386_tss master_ktss;
+extern struct sysenter_stack master_sstk;
-extern struct fake_descriptor64 master_idt64[IDTSZ];
-extern struct fake_descriptor64 kernel_ldt_desc64;
-extern struct fake_descriptor64 kernel_tss_desc64;
-extern struct x86_64_tss master_ktss64;
+extern struct fake_descriptor64 master_idt64[IDTSZ];
+extern struct x86_64_tss master_ktss64;
__BEGIN_DECLS
-extern char df_task_stack[];
-extern char df_task_stack_end[];
-extern struct i386_tss master_dftss;
-extern void df_task_start(void);
+extern char df_task_stack[];
+extern char df_task_stack_end[];
+extern struct i386_tss master_dftss;
+extern void df_task_start(void);
-extern char mc_task_stack[];
-extern char mc_task_stack_end[];
-extern struct i386_tss master_mctss;
-extern void mc_task_start(void);
-
-#if MACH_KDB
-extern char db_stack_store[];
-extern char db_task_stack_store[];
-extern struct i386_tss master_dbtss;
-extern void db_task_start(void);
-#endif /* MACH_KDB */
+extern char mc_task_stack[];
+extern char mc_task_stack_end[];
+extern struct i386_tss master_mctss;
+extern void mc_task_start(void);
__END_DECLS
-#endif /*__ASSEMBLER__*/
+#endif /*__ASSEMBLER__*/
-#define SZ_64 0x2 /* 64-bit segment */
-#define SZ_32 0x4 /* 32-bit segment */
-#define SZ_G 0x8 /* 4K limit field */
+#define SZ_64 0x2 /* 64-bit segment */
+#define SZ_32 0x4 /* 32-bit segment */
+#define SZ_G 0x8 /* 4K limit field */
-#define ACC_A 0x01 /* accessed */
-#define ACC_TYPE 0x1e /* type field: */
+#define ACC_A 0x01 /* accessed */
+#define ACC_TYPE 0x1e /* type field: */
-#define ACC_TYPE_SYSTEM 0x00 /* system descriptors: */
+#define ACC_TYPE_SYSTEM 0x00 /* system descriptors: */
-#define ACC_LDT 0x02 /* LDT */
-#define ACC_CALL_GATE_16 0x04 /* 16-bit call gate */
-#define ACC_TASK_GATE 0x05 /* task gate */
-#define ACC_TSS 0x09 /* task segment */
-#define ACC_CALL_GATE 0x0c /* call gate */
-#define ACC_INTR_GATE 0x0e /* interrupt gate */
-#define ACC_TRAP_GATE 0x0f /* trap gate */
+#define ACC_LDT 0x02 /* LDT */
+#define ACC_CALL_GATE_16 0x04 /* 16-bit call gate */
+#define ACC_TASK_GATE 0x05 /* task gate */
+#define ACC_TSS 0x09 /* task segment */
+#define ACC_CALL_GATE 0x0c /* call gate */
+#define ACC_INTR_GATE 0x0e /* interrupt gate */
+#define ACC_TRAP_GATE 0x0f /* trap gate */
-#define ACC_TSS_BUSY 0x02 /* task busy */
+#define ACC_TSS_BUSY 0x02 /* task busy */
-#define ACC_TYPE_USER 0x10 /* user descriptors */
+#define ACC_TYPE_USER 0x10 /* user descriptors */
-#define ACC_DATA 0x10 /* data */
-#define ACC_DATA_W 0x12 /* data, writable */
-#define ACC_DATA_E 0x14 /* data, expand-down */
-#define ACC_DATA_EW 0x16 /* data, expand-down,
- writable */
-#define ACC_CODE 0x18 /* code */
-#define ACC_CODE_R 0x1a /* code, readable */
-#define ACC_CODE_C 0x1c /* code, conforming */
-#define ACC_CODE_CR 0x1e /* code, conforming,
- readable */
-#define ACC_PL 0x60 /* access rights: */
-#define ACC_PL_K 0x00 /* kernel access only */
-#define ACC_PL_U 0x60 /* user access */
-#define ACC_P 0x80 /* segment present */
+#define ACC_DATA 0x10 /* data */
+#define ACC_DATA_W 0x12 /* data, writable */
+#define ACC_DATA_E 0x14 /* data, expand-down */
+#define ACC_DATA_EW 0x16 /* data, expand-down,
+ * writable */
+#define ACC_CODE 0x18 /* code */
+#define ACC_CODE_R 0x1a /* code, readable */
+#define ACC_CODE_C 0x1c /* code, conforming */
+#define ACC_CODE_CR 0x1e /* code, conforming,
+ * readable */
+#define ACC_PL 0x60 /* access rights: */
+#define ACC_PL_K 0x00 /* kernel access only */
+#define ACC_PL_U 0x60 /* user access */
+#define ACC_P 0x80 /* segment present */
/*
* Components of a selector
*/
-#define SEL_LDTS 0x04 /* local selector */
-#define SEL_PL 0x03 /* privilege level: */
-#define SEL_PL_K 0x00 /* kernel selector */
-#define SEL_PL_U 0x03 /* user selector */
+#define SEL_LDTS 0x04 /* local selector */
+#define SEL_PL 0x03 /* privilege level: */
+#define SEL_PL_K 0x00 /* kernel selector */
+#define SEL_PL_U 0x03 /* user selector */
/*
* Convert selector to descriptor table index.
*/
-#define sel_idx(sel) (selector_to_sel(sel).index)
-#define SEL_TO_INDEX(s) ((s)>>3)
+#define sel_idx(sel) (selector_to_sel(sel).index)
+#define SEL_TO_INDEX(s) ((s)>>3)
+
+#define NULL_SEG 0
-#define NULL_SEG 0
/*
- * User descriptors for MACH - 32-bit flat address space
+ * Kernel descriptors for MACH - 64-bit flat address space.
*/
-#define SYSENTER_CS 0x07 /* sysenter kernel code segment */
-#define SYSENTER_DS 0x0f /* sysenter kernel data segment */
-#define USER_CS 0x17 /* user code segment
- Must be SYSENTER_CS+16 for sysexit */
-/* Special case: sysenter with EFL_TF (trace bit) set - use iret not sysexit */
-#define SYSENTER_TF_CS (USER_CS|0x10000)
-#define USER_DS 0x1f /* user data segment
- Must be SYSENTER_CS+24 for sysexit */
-#define USER64_CS 0x27 /* 64-bit user code segment
- Must be USER_CS+16 for sysret */
-#define USER64_DS USER_DS /* 64-bit user data segment == 32-bit */
-#define SYSCALL_CS 0x2f /* 64-bit syscall pseudo-segment */
-#define USER_CTHREAD 0x37 /* user cthread area */
-#define USER_SETTABLE 0x3f /* start of user settable ldt entries */
-#define USLDTSZ 10 /* number of user settable entries */
-
+#define KERNEL64_CS 0x08 /* 1: K64 code */
+#define SYSENTER_CS 0x0b /* U32 sysenter pseudo-segment */
+#define KERNEL64_SS 0x10 /* 2: KERNEL64_CS+8 for syscall */
+#define USER_CS 0x1b /* 3: U32 code */
+#define USER_DS 0x23 /* 4: USER_CS+8 for sysret */
+#define USER64_CS 0x2b /* 5: USER_CS+16 for sysret */
+#define USER64_DS USER_DS /* U64 data pseudo-segment */
+#define KERNEL_LDT 0x30 /* 6: */
+ /* 7: other 8 bytes of KERNEL_LDT */
+#define KERNEL_TSS 0x40 /* 8: */
+ /* 9: other 8 bytes of KERNEL_TSS */
+#define KERNEL32_CS 0x50 /* 10: */
+#define USER_LDT 0x58 /* 11: */
+ /* 12: other 8 bytes of USER_LDT */
+#define KERNEL_DS 0x68 /* 13: 32-bit kernel data */
+
+
+#define SYSENTER_TF_CS (USER_CS|0x10000)
+#define SYSENTER_DS KERNEL64_SS /* sysenter kernel data segment */
+
+#endif /* _I386_SEG_H_ */
+#ifdef __x86_64__
/*
- * Kernel descriptors for MACH - 32-bit flat address space.
+ * 64-bit kernel LDT descriptors
*/
-#define KERNEL_CS 0x08 /* kernel code */
-#define KERNEL_DS 0x10 /* kernel data */
-#define KERNEL_LDT 0x18 /* master LDT */
-#define KERNEL_LDT_2 0x20 /* master LDT expanded for 64-bit */
-#define KERNEL_TSS 0x28 /* master TSS */
-#define KERNEL_TSS_2 0x30 /* master TSS expanded for 64-bit */
-
-#define MC_TSS 0x38 /* machine-check handler TSS */
-
-#define CPU_DATA_GS 0x48 /* per-cpu data */
-
-#define DF_TSS 0x50 /* double-fault handler TSS */
-
-#define USER_LDT 0x58
-#define USER_TSS 0x60
-#define FPE_CS 0x68
-
-#define USER_WINDOW_SEL 0x70 /* window for copyin/copyout */
-#define PHYS_WINDOW_SEL 0x78 /* window for copyin/copyout */
-
-#define KERNEL64_CS 0x80 /* kernel 64-bit code */
-#define KERNEL64_SS 0x88 /* kernel 64-bit (syscall) stack */
-
-#if MACH_KDB
-#define DEBUG_TSS 0x90 /* debug TSS (uniprocessor) */
+#define SYSCALL_CS 0x07 /* syscall pseudo-segment */
+#define USER_CTHREAD 0x0f /* user cthread area */
+#define USER_SETTABLE 0x1f /* start of user settable ldt entries */
#endif
-
-#ifndef __ASSEMBLER__
-struct __gdt_desc_struct {
- unsigned short size;
- unsigned long address __attribute__((packed));
- unsigned short pad;
-} __attribute__ ((packed));
-
-struct __idt_desc_struct {
- unsigned short size;
- unsigned long address __attribute__((packed));
- unsigned short pad;
-} __attribute__ ((packed));
-#endif /* __ASSEMBLER__ */
-
-#endif /* _I386_SEG_H_ */
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