/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* 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__
#include <stdint.h>
+#include <mach/vm_types.h>
#include <architecture/i386/sel.h>
/*
return (tconv.sel);
}
-#define LDTSZ 15 /* size of the kernel ldt in entries*/
+#define LDTSZ 8192 /* size of the kernel ldt in entries */
+#define LDTSZ_MIN SEL_TO_INDEX(USER_SETTABLE)
+ /* kernel ldt entries */
-#if MACH_KDB
-#ifdef MACH_BSD
-#define GDTSZ 14
-#else
-#define GDTSZ 11
-#endif
-#else /* MACH_KDB */
-#ifdef MACH_BSD
-#define GDTSZ 13
-#else
-#define GDTSZ 10
-#endif
-#endif /* MACH_KDB */
+#define GDTSZ 19
/*
* Interrupt table is always 256 entries long.
*/
#define IDTSZ 256
-#ifndef __ASSEMBLER__
-
#include <sys/cdefs.h>
/*
* Real segment descriptor.
*/
struct real_descriptor {
- unsigned int limit_low:16, /* limit 0..15 */
+ uint32_t limit_low:16, /* limit 0..15 */
base_low:16, /* base 0..15 */
base_med:8, /* base 16..23 */
access:8, /* access byte */
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 */
+};
struct real_gate {
- unsigned int offset_low:16, /* offset 0..15 */
+ 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 */
+};
+
+#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
* at runtime.
*/
struct fake_descriptor {
- unsigned int offset:32; /* offset */
- unsigned int lim_or_seg:20; /* limit */
+ uint32_t offset:32; /* offset */
+ uint32_t lim_or_seg:20; /* limit */
/* or segment, for gate */
- unsigned int size_or_wdct:4; /* size/granularity */
+ uint32_t size_or_wdct:4; /* size/granularity */
/* word count, for gate */
- unsigned int access:8; /* access */
+ uint32_t access:8; /* access */
+};
+struct fake_descriptor64 {
+ 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 */
};
+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 idt[IDTSZ];
-extern struct fake_descriptor gdt[GDTSZ];
-extern struct fake_descriptor ldt[LDTSZ];
-extern struct i386_tss ktss;
+extern struct real_descriptor master_gdt[GDTSZ];
+extern struct real_descriptor master_ldt[LDTSZ];
+extern struct i386_tss master_ktss;
+extern struct sysenter_stack master_sstk;
+
+extern struct fake_descriptor64 master_idt64[IDTSZ];
+extern struct x86_64_tss master_ktss64;
__BEGIN_DECLS
-#if MACH_KDB
-extern char db_stack_store[];
-extern char db_task_stack_store[];
-extern struct i386_tss dbtss;
-extern void db_task_start(void);
-#endif /* MACH_KDB */
+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);
__END_DECLS
#endif /*__ASSEMBLER__*/
+#define SZ_64 0x2 /* 64-bit segment */
#define SZ_32 0x4 /* 32-bit segment */
#define SZ_G 0x8 /* 4K limit field */
* Convert selector to descriptor table index.
*/
#define sel_idx(sel) (selector_to_sel(sel).index)
+#define SEL_TO_INDEX(s) ((s)>>3)
#define NULL_SEG 0
+
/*
- * User descriptors for MACH - 32-bit flat address space
+ * Kernel descriptors for MACH - 64-bit flat address space.
*/
-#define USER_SCALL 0x07 /* system call gate */
-#define USER_RPC 0x0f /* mach rpc call gate */
-#define USER_CS 0x17 /* user code segment */
-#define USER_DS 0x1f /* user data segment */
-#define USER_CTHREAD 0x27 /* user cthread area */
-#define USER_SETTABLE 0x2f /* 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 */
+
+#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_TSS 0x20 /* master TSS (uniprocessor) */
-#ifdef MACH_BSD
-#define BSD_SCALL_SEL 0x28 /* BSD System calls */
-#define MK25_SCALL_SEL 0x30 /* MK25 System Calls */
-#define MACHDEP_SCALL_SEL 0x38 /* Machdep SYstem calls */
-#else
-#define USER_LDT 0x28 /* place for per-thread LDT */
-#define USER_TSS 0x30 /* place for per-thread TSS
- that holds IO bitmap */
-#define FPE_CS 0x38 /* floating-point emulator code */
-#endif
-#define USER_FPREGS 0x40 /* user-mode access to saved
- floating-point registers */
-#define CPU_DATA_GS 0x48 /* per-cpu data */
-
-#ifdef MACH_BSD
-#define USER_LDT 0x58
-#define USER_TSS 0x60
-#define FPE_CS 0x68
-#endif
-
-#if MACH_KDB
-#define DEBUG_TSS 0x50 /* 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
#endif /* _I386_SEG_H_ */
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