xnu-792.10.96.tar.gz

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

diff --git a/osfmk/i386/seg.h b/osfmk/i386/seg.h
index b2b83c2463ad5ce502678686860c15a8c6427be5..eca69d6f39ed263b59f96048202adfd578e80c55 100644 (file)
--- a/osfmk/i386/seg.h
+++ b/osfmk/i386/seg.h
@@ -55,6 +55,7 @@
 
 #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>
 
 /*


@@ -87,21 +88,14 @@ selector_to_sel(uint16_t selector)
     return (tconv.sel);
 }
 
     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       17              /* kernel ldt entries used by the system */

 
 #if    MACH_KDB
 
 #if    MACH_KDB

-#ifdef MACH_BSD
-#define        GDTSZ           14
+#define        GDTSZ           19

 #else
 #else

-#define        GDTSZ           11
+#define        GDTSZ           18

 #endif
 #endif

-#else  /* MACH_KDB */
-#ifdef MACH_BSD
-#define        GDTSZ           13
-#else
-#define        GDTSZ           10
-#endif
-#endif /* MACH_KDB */

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


@@ -116,7 +110,7 @@ selector_to_sel(uint16_t selector)
  * Real segment descriptor.
  */
 struct real_descriptor {
  * 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 */
                        base_low:16,    /* base  0..15 */
                        base_med:8,     /* base  16..23 */
                        access:8,       /* access byte */


@@ -124,14 +118,34 @@ 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 {

-       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 */
 };
                        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


@@ -139,28 +153,56 @@ struct real_gate {
  * at runtime.
  */
 struct fake_descriptor {
  * 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 */
                                                /* or segment, for gate */

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

                                                /* word count, for gate */
                                                /* word count, for gate */

-       unsigned int    access:8;               /* access */
+       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 */
+};
+#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  idt[IDTSZ];
-extern struct fake_descriptor  gdt[GDTSZ];
-extern struct fake_descriptor  ldt[LDTSZ];
-extern struct i386_tss         ktss;
+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;

 
 __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         dbtss;
+extern struct i386_tss         master_dbtss;

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


@@ -168,6 +210,7 @@ __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 */
 


@@ -215,18 +258,27 @@ __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        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        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        USLDTSZ         10              /* number of user settable entries */
 
 /*


@@ -235,29 +287,41 @@ __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_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        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        CPU_DATA_GS     0x48            /* per-cpu data */
 

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

 #define        USER_LDT        0x58
 #define        USER_TSS        0x60
 #define        FPE_CS          0x68
 #define        USER_LDT        0x58
 #define        USER_TSS        0x60
 #define        FPE_CS          0x68

-#endif
+
+#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
 
 #if    MACH_KDB

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