X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/ff6e181ae92fc6f1e89841290f461d1f2f9badd9..9d749ea394c01276fa19e397e70f46858e849c76:/osfmk/i386/fpu.h

diff --git a/osfmk/i386/fpu.h b/osfmk/i386/fpu.h
index fb4516281..84a03460d 100644
--- a/osfmk/i386/fpu.h
+++ b/osfmk/i386/fpu.h
@@ -1,14 +1,19 @@
 /*
- * 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@
  * 
  * 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
@@ -18,7 +23,7 @@
  * 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@
@@ -49,9 +54,6 @@
  * the rights to redistribute these changes.
  */
 
-/*
- */
-
 #ifndef	_I386_FPU_H_
 #define	_I386_FPU_H_
 
@@ -59,103 +61,61 @@
  * 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 <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(
-				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(
-				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(
-				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		fp_state_alloc(void);
-extern void		fpintr(void);
+extern void		fpSSEexterrflt(void);
 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_ */