xnu-1228.5.18.tar.gz

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

diff --git a/osfmk/i386/thread.h b/osfmk/i386/thread.h
index 926bd0a13a4c47f982661cc06e5cf9b56dccb946..badd5491f21873ccf374850ee38bb1233aec18e3 100644 (file)
--- a/osfmk/i386/thread.h
+++ b/osfmk/i386/thread.h
@@ -1,14 +1,19 @@
 /*
 /*

- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @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
  * 
  * 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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.
+ * 
+ * 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
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER


@@ -18,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
  * 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@


@@ -74,7 +79,7 @@
 #include <i386/eflags.h>
 
 /*
 #include <i386/eflags.h>
 
 /*

- *     i386_saved_state:
+ *     x86_saved_state32/64:

  *
  *     Has been exported to servers.  See: mach/i386/thread_status.h
  *
  *
  *     Has been exported to servers.  See: mach/i386/thread_status.h
  *


@@ -84,120 +89,79 @@
  *     For performance, it is also used directly in syscall exceptions
  *     if the server has requested i386_THREAD_STATE flavor for the exception
  *     port.
  *     For performance, it is also used directly in syscall exceptions
  *     if the server has requested i386_THREAD_STATE flavor for the exception
  *     port.

- *
- *     We define the following as an alias for the "esp" field of the
- *     structure, because we actually save cr2 here, not the kernel esp.

  */
  */

-#define cr2    esp

 
 /*
  *     Save area for user floating-point state.
  *     Allocated only when necessary.
  */
 
 
 /*
  *     Save area for user floating-point state.
  *     Allocated only when necessary.
  */
 

-struct i386_fpsave_state {
+struct x86_fpsave_state {

        boolean_t               fp_valid;
        boolean_t               fp_valid;

-       struct i386_fp_save     fp_save_state;
-       struct i386_fp_regs     fp_regs;
-        struct i386_fx_save    fx_save_state __attribute__ ((aligned (16)));
-       int                     fp_save_flavor;
-};
-
-/*
- *     v86_assist_state:
- *
- *     This structure provides data to simulate 8086 mode
- *     interrupts.  It lives in the pcb.
- */
-
-struct v86_assist_state {
-       vm_offset_t             int_table;
-       unsigned short          int_count;
-       unsigned short          flags;  /* 8086 flag bits */
+       enum {
+               FXSAVE32 = 1,
+               FXSAVE64 = 2
+       } fp_save_layout;
+        struct x86_fx_save     fx_save_state __attribute__ ((aligned (16)));

 };
 };

-#define        V86_IF_PENDING          0x8000  /* unused bit */
-
-/*
- *     i386_interrupt_state:
- *
- *     This structure describes the set of registers that must
- *     be pushed on the current ring-0 stack by an interrupt before
- *     we can switch to the interrupt stack.
- */

 
 

-struct i386_interrupt_state {
-        int     gs;
-        int     fs;
-       int     es;
-       int     ds;
-       int     edx;
-       int     ecx;
-       int     eax;
-       int     eip;
-       int     cs;
-       int     efl;
-};

 
 /*
 
 /*

- *     i386_kernel_state:
+ *     x86_kernel_state32:

  *
  *     This structure corresponds to the state of kernel registers
  *     as saved in a context-switch.  It lives at the base of the stack.
  *
  *     This structure corresponds to the state of kernel registers
  *     as saved in a context-switch.  It lives at the base of the stack.

+ *      kernel only runs in 32 bit mode for now

  */
 
  */
 

-struct i386_kernel_state {
+struct x86_kernel_state32 {

        int                     k_ebx;  /* kernel context */
        int                     k_esp;
        int                     k_ebp;
        int                     k_edi;
        int                     k_esi;
        int                     k_eip;
        int                     k_ebx;  /* kernel context */
        int                     k_esp;
        int                     k_ebp;
        int                     k_edi;
        int                     k_esi;
        int                     k_eip;

+       /*
+        * Kernel stacks are 16-byte aligned with a 4-byte i386_exception_link at
+        * the top, followed by an x86_kernel_state32.  After both structs have
+        * been pushed, we want to be 16-byte aligned.  A dummy int gets us there.
+        */
+       int                     dummy;

 };
 
 };
 

-/*
- *     i386_machine_state:
- *
- *     This structure corresponds to special machine state.
- *     It lives in the pcb.  It is not saved by default.
- */
-
-struct i386_machine_state {
-       iopb_tss_t              io_tss;
-       struct user_ldt *       ldt;
-       struct i386_fpsave_state *ifps;
-       struct v86_assist_state v86s;
-};

 
 typedef struct pcb {
 
 typedef struct pcb {

-       struct i386_interrupt_state iis[2];     /* interrupt and NMI */
-       struct i386_saved_state iss;
-       struct i386_machine_state ims;
+       void                    *sf;
+       x86_saved_state_t       *iss;
+       struct x86_fpsave_state *ifps;

 #ifdef MACH_BSD
 #ifdef MACH_BSD

-       unsigned long   cthread_self;           /* for use of cthread package */
+       uint64_t        cthread_self;           /* for use of cthread package */

         struct real_descriptor cthread_desc;
        unsigned long  uldt_selector;          /* user ldt selector to set */
        struct real_descriptor uldt_desc;      /* the actual user setable ldt data */
 #endif
         struct real_descriptor cthread_desc;
        unsigned long  uldt_selector;          /* user ldt selector to set */
        struct real_descriptor uldt_desc;      /* the actual user setable ldt data */
 #endif

-       decl_simple_lock_data(,lock)
+       decl_simple_lock_data(,lock);
+       uint64_t        iss_pte0;
+       uint64_t        iss_pte1;
+       void            *ids;
+       uint32_t        arg_store_valid;

 } *pcb_t;
 
 } *pcb_t;
 

+

 /*
  * Maps state flavor to number of words in the state:
  */
 __private_extern__ unsigned int _MachineStateCount[];
 
 /*
  * Maps state flavor to number of words in the state:
  */
 __private_extern__ unsigned int _MachineStateCount[];
 

-#define USER_REGS(ThrAct)      (&(ThrAct)->machine.pcb->iss)
+#define USER_STATE(ThrAct)     ((ThrAct)->machine.pcb->iss)
+#define USER_REGS32(ThrAct)    (saved_state32(USER_STATE(ThrAct)))
+#define USER_REGS64(ThrAct)    (saved_state64(USER_STATE(ThrAct)))

 
 

-#define act_machine_state_ptr(ThrAct)  (thread_state_t)USER_REGS(ThrAct)
+#define        user_pc(ThrAct)         (is_saved_state32(USER_STATE(ThrAct)) ? \
+                                       USER_REGS32(ThrAct)->eip :      \
+                                       USER_REGS64(ThrAct)->isf.rip )

 
 
 
 

-#define        is_user_thread(ThrAct)  \
-       ((USER_REGS(ThrAct)->efl & EFL_VM) \
-        || ((USER_REGS(ThrAct)->cs & 0x03) != 0))
-
-#define        user_pc(ThrAct)         (USER_REGS(ThrAct)->eip)
-#define        user_sp(ThrAct)         (USER_REGS(ThrAct)->uesp)
-

 struct machine_thread {
        /*
         * pointer to process control block
 struct machine_thread {
        /*
         * pointer to process control block


@@ -206,9 +170,27 @@ struct machine_thread {
        struct pcb xxx_pcb;
        pcb_t pcb;
 
        struct pcb xxx_pcb;
        pcb_t pcb;
 

+       uint32_t        specFlags;
+#define                OnProc  0x1
+#if CONFIG_DTRACE
+#define                CopyIOActive 0x2 /* Checked to ensure DTrace actions do not re-enter copyio(). */
+#endif /* CONFIG_DTRACE */
+  
+        struct {
+               user_addr_t     user_base;
+       } copy_window[NCOPY_WINDOWS];
+        int            nxt_window;
+        int            copyio_state;
+#define                WINDOWS_DIRTY   0
+#define                WINDOWS_CLEAN   1
+#define                WINDOWS_CLOSED  2
+#define                WINDOWS_OPENED  3
+        uint64_t       physwindow_pte;
+        int            physwindow_busy;

 };
 
 };
 

-extern struct i386_saved_state *get_user_regs(thread_t);
+
+extern void *get_user_regs(thread_t);

 
 extern void *act_thread_csave(void);
 extern void act_thread_catt(void *ctx);
 
 extern void *act_thread_csave(void);
 extern void act_thread_catt(void *ctx);


@@ -221,7 +203,7 @@ extern void act_thread_cfree(void *ctx);
  *     It points to the current thread`s user registers.
  */
 struct i386_exception_link {
  *     It points to the current thread`s user registers.
  */
 struct i386_exception_link {

-       struct i386_saved_state *saved_state;
+       x86_saved_state_t       *saved_state;

 };
 
 
 };
 
 


@@ -234,7 +216,7 @@ struct i386_exception_link {
  */
 
 #define STACK_IKS(stack)       \
  */
 
 #define STACK_IKS(stack)       \

-       ((struct i386_kernel_state *)((stack) + KERNEL_STACK_SIZE) - 1)
+       ((struct x86_kernel_state32 *)((stack) + KERNEL_STACK_SIZE) - 1)

 #define STACK_IEL(stack)       \
        ((struct i386_exception_link *)STACK_IKS(stack) - 1)
 
 #define STACK_IEL(stack)       \
        ((struct i386_exception_link *)STACK_IKS(stack) - 1)