xnu-792.17.14.tar.gz

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

diff --git a/osfmk/i386/seg.h b/osfmk/i386/seg.h
index eca69d6f39ed263b59f96048202adfd578e80c55..7475af199368094dfd92700f24ddc8d2b1dec557 100644 (file)
--- a/osfmk/i386/seg.h
+++ b/osfmk/i386/seg.h
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *
 /*
  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 

- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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. 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.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE 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_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

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


@@ -55,7 +61,6 @@
 
 #include <mach_kdb.h>
 #include <stdint.h>
 
 #include <mach_kdb.h>
 #include <stdint.h>

-#include <mach/vm_types.h>

 #include <architecture/i386/sel.h>
 
 /*
 #include <architecture/i386/sel.h>
 
 /*


@@ -88,14 +93,21 @@ selector_to_sel(uint16_t selector)
     return (tconv.sel);
 }
 
     return (tconv.sel);
 }
 

-#define LDTSZ          8192            /* size of the kernel ldt in entries */
-#define        LDTSZ_MIN       17              /* kernel ldt entries used by the system */
+#define        LDTSZ           15              /* size of the kernel ldt in entries*/

 
 #if    MACH_KDB
 
 #if    MACH_KDB

-#define        GDTSZ           19
+#ifdef MACH_BSD
+#define        GDTSZ           14
+#else
+#define        GDTSZ           11
+#endif
+#else  /* MACH_KDB */
+#ifdef MACH_BSD
+#define        GDTSZ           13

 #else
 #else

-#define        GDTSZ           18
+#define        GDTSZ           10

 #endif
 #endif

+#endif /* MACH_KDB */

 
 /*
  * Interrupt table is always 256 entries long.
 
 /*
  * Interrupt table is always 256 entries long.


@@ -110,7 +122,7 @@ selector_to_sel(uint16_t selector)
  * Real segment descriptor.
  */
 struct real_descriptor {
  * Real segment descriptor.
  */
 struct real_descriptor {

-       uint32_t        limit_low:16,   /* limit 0..15 */
+       unsigned int    limit_low:16,   /* limit 0..15 */

                        base_low:16,    /* base  0..15 */
                        base_med:8,     /* base  16..23 */
                        access:8,       /* access byte */
                        base_low:16,    /* base  0..15 */
                        base_med:8,     /* base  16..23 */
                        access:8,       /* access byte */


@@ -118,34 +130,14 @@ struct real_descriptor {
                        granularity:4,  /* granularity */
                        base_high:8;    /* base 24..31 */
 };
                        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 {
 struct real_gate {

-       uint32_t        offset_low:16,  /* offset 0..15 */
+       unsigned int    offset_low:16,  /* offset 0..15 */

                        selector:16,
                        word_count:8,
                        access:8,
                        offset_high:16; /* offset 16..31 */
 };
                        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 */
-};

 
 /*
  * We build descriptors and gates in a 'fake' format to let the
 
 /*
  * We build descriptors and gates in a 'fake' format to let the


@@ -153,56 +145,28 @@ struct real_gate64 {
  * at runtime.
  */
 struct fake_descriptor {
  * at runtime.
  */
 struct fake_descriptor {

-       uint32_t        offset:32;              /* offset */
-       uint32_t        lim_or_seg:20;          /* limit */
+       unsigned int    offset:32;              /* offset */
+       unsigned int    lim_or_seg:20;          /* limit */

                                                /* or segment, for gate */
                                                /* or segment, for gate */

-       uint32_t        size_or_wdct:4;         /* size/granularity */
+       unsigned int    size_or_wdct:4;         /* size/granularity */

                                                /* word count, for gate */
                                                /* 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 */
+       unsigned int    access:8;               /* access */

 };
 };

-#define        FAKE_UBER64(addr32)     { (uint32_t) (addr32), KERNEL_UBER_BASE_HI32 }
-#define        FAKE_COMPAT(addr32)     { (uint32_t) (addr32), 0x0 }
-#define        UBER64(addr32)          ((addr64_t) addr32 + KERNEL_UBER_BASE)

 
 /*
  * Boot-time data for master (or only) CPU
  */
 
 /*
  * 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 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_descriptor  idt[IDTSZ];
+extern struct fake_descriptor  gdt[GDTSZ];
+extern struct fake_descriptor  ldt[LDTSZ];
+extern struct i386_tss         ktss;

 
 __BEGIN_DECLS
 
 
 __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                    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[];
 #if    MACH_KDB
 extern char                    db_stack_store[];
 extern char                    db_task_stack_store[];

-extern struct i386_tss         master_dbtss;
+extern struct i386_tss         dbtss;

 extern void                    db_task_start(void);
 #endif /* MACH_KDB */
 
 extern void                    db_task_start(void);
 #endif /* MACH_KDB */
 


@@ -210,7 +174,6 @@ __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_32           0x4                     /* 32-bit segment */
 #define        SZ_G            0x8                     /* 4K limit field */
 


@@ -258,27 +221,18 @@ __END_DECLS
  * Convert selector to descriptor table index.
  */
 #define        sel_idx(sel)    (selector_to_sel(sel).index)
  * 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
  */
 
 #define NULL_SEG       0
 
 /*
  * User descriptors for MACH - 32-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        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        USLDTSZ         10              /* number of user settable entries */
 
 /*


@@ -287,41 +241,29 @@ __END_DECLS
 #define        KERNEL_CS       0x08            /* kernel code */
 #define        KERNEL_DS       0x10            /* kernel data */
 #define        KERNEL_LDT      0x18            /* master LDT */
 #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        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 */
 
 #define        CPU_DATA_GS     0x48            /* per-cpu data */
 

-#define        DF_TSS          0x50            /* double-fault handler TSS */
-
+#ifdef MACH_BSD

 #define        USER_LDT        0x58
 #define        USER_TSS        0x60
 #define        FPE_CS          0x68
 #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 */
+#endif

 
 #if    MACH_KDB
 
 #if    MACH_KDB

-#define        DEBUG_TSS       0x90            /* debug TSS (uniprocessor) */
+#define        DEBUG_TSS       0x50            /* debug TSS (uniprocessor) */

 #endif
 
 #endif
 

-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 /* _I386_SEG_H_ */
 #endif /* _I386_SEG_H_ */