xnu-4570.61.1.tar.gz

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

diff --git a/osfmk/i386/fpu.h b/osfmk/i386/fpu.h
index 618e2e3ce269b904c6a427ba41ed0b2cd3b648e3..84a03460d7a300ed739aef6117470a83a5ac440e 100644 (file)
--- a/osfmk/i386/fpu.h
+++ b/osfmk/i386/fpu.h
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple 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@


@@ -48,9 +54,6 @@
  * the rights to redistribute these changes.
  */
 
  * the rights to redistribute these changes.
  */
 

-/*
- */
-

 #ifndef        _I386_FPU_H_
 #define        _I386_FPU_H_
 
 #ifndef        _I386_FPU_H_
 #define        _I386_FPU_H_
 


@@ -58,103 +61,61 @@
  * Macro definitions for routines to manipulate the
  * floating-point processor.
  */
  * Macro definitions for routines to manipulate the
  * floating-point processor.
  */

-
-#include <i386/proc_reg.h>
-#include <i386/thread.h>

 #include <kern/kern_types.h>
 #include <mach/i386/kern_return.h>
 #include <mach/i386/thread_status.h>
 #include <kern/kern_types.h>
 #include <mach/i386/kern_return.h>
 #include <mach/i386/thread_status.h>

+#include <i386/proc_reg.h>

 
 

-/*
- * FPU instructions.
- */
-#define        fninit() \
-       __asm__ volatile("fninit")
-
-#define        fnstcw(control) \
-       __asm__("fnstcw %0" : "=m" (*(unsigned short *)(control)))
-
-#define        fldcw(control) \
-       __asm__ volatile("fldcw %0" : : "m" (*(unsigned short *) &(control)) )
-
-extern unsigned short          fnstsw(void);
-
-extern __inline__ unsigned short fnstsw(void)
-{
-       unsigned short status;
-       __asm__ volatile("fnstsw %0" : "=ma" (status));
-       return(status);
-}
-
-#define        fnclex() \
-       __asm__ volatile("fnclex")
-
-#define        fnsave(state)  \
-       __asm__ volatile("fnsave %0" : "=m" (*state))
-
-#define        frstor(state) \
-       __asm__ volatile("frstor %0" : : "m" (state))
-
-#define fwait() \
-       __asm__("fwait");
-
-#define fxrstor(addr)           __asm("fxrstor %0" : : "m" (*(addr)))     
-#define fxsave(addr)            __asm __volatile("fxsave %0" : "=m" (*(addr)))
-
-#define FXSAFE() (fp_kind == FP_FXSR)
-
-#define        fpu_load_context(pcb)
-
-/*
- * Save thread`s FPU context.
- * If only one CPU, we just set the task-switched bit,
- * to keep the new thread from using the coprocessor.
- * If multiple CPUs, we save the entire state.
- * NOTE: in order to provide backwards compatible support in the kernel. When saving SSE2 state, we also save the
- * FP state in it's old location. Otherwise fpu_get_state() and fpu_set_state() will stop working
- */
-#define        fpu_save_context(thread) \
-    { \
-       register struct i386_fpsave_state *ifps; \
-       ifps = (thread)->machine.pcb->ims.ifps; \
-       if (ifps != 0 && !ifps->fp_valid) { \
-           /* registers are in FPU - save to memory */ \
-           ifps->fp_valid = TRUE; \
-            ifps->fp_save_flavor = FP_387; \
-            if (FXSAFE()) { \
-               fxsave(&ifps->fx_save_state); \
-                ifps->fp_save_flavor = FP_FXSR; \
-           } \
-            fnsave(&ifps->fp_save_state); \
-       } \
-       set_ts(); \
-    }
-           
-
-
-extern int     fp_kind;
+typedef        enum {
+               FXSAVE32 = 1,
+               FXSAVE64 = 2,
+               XSAVE32  = 3,
+               XSAVE64  = 4,
+               FP_UNUSED = 5
+       } fp_save_layout_t;
+
+typedef enum {
+       UNDEFINED,
+       FP,
+       AVX,
+#if !defined(RC_HIDE_XNU_J137)
+       AVX512
+#endif
+} xstate_t;

 
 extern void            init_fpu(void);
 extern void            fpu_module_init(void);
 extern void            fpu_free(
 
 extern void            init_fpu(void);
 extern void            fpu_module_init(void);
 extern void            fpu_free(

-                               struct i386_fpsave_state        * fps);
-extern kern_return_t   fpu_set_state(
-                               thread_t                        thr_act,
-                               struct i386_float_state         * st);
-extern kern_return_t   fpu_get_state(
-                               thread_t                        thr_act,
-                               struct i386_float_state         * st);
+                               thread_t        thr_act,
+                               void            *fps);

 extern kern_return_t   fpu_set_fxstate(
 extern kern_return_t   fpu_set_fxstate(

-                               thread_t                        thr_act,
-                               struct i386_float_state         * st);
+                               thread_t        thr_act,
+                               thread_state_t  state,
+                               thread_flavor_t f);

 extern kern_return_t   fpu_get_fxstate(
 extern kern_return_t   fpu_get_fxstate(

-                               thread_t                        thr_act,
-                               struct i386_float_state         * st);
+                               thread_t        thr_act,
+                               thread_state_t  state,
+                               thread_flavor_t f);
+extern void            fpu_dup_fxstate(
+                               thread_t        parent,
+                               thread_t        child);

 extern void            fpnoextflt(void);
 extern void            fpextovrflt(void);
 extern void            fpexterrflt(void);
 extern void            fpnoextflt(void);
 extern void            fpextovrflt(void);
 extern void            fpexterrflt(void);

-extern void            fp_state_alloc(void);
-extern void            fpintr(void);
+extern void            fpSSEexterrflt(void);

 extern void            fpflush(thread_t);
 extern void            fpflush(thread_t);

+extern void            fp_setvalid(boolean_t);
+
+extern void            clear_fpu(void);
+extern void            fpu_switch_context(
+                               thread_t        old,
+                               thread_t        new);
+extern void            fpu_switch_addrmode(
+                               thread_t        thread,
+                               boolean_t       is_64bit);
+
+extern xstate_t                fpu_default;
+extern xstate_t                current_xstate(void);
+extern void            fpUDflt(user_addr_t rip);

 
 #endif /* _I386_FPU_H_ */
 
 #endif /* _I386_FPU_H_ */