/*
- * Copyright (c) 2000 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@
*
- * 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,
- * 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@
* the rights to redistribute these changes.
*/
-/*
- */
-
#ifndef _I386_FPU_H_
#define _I386_FPU_H_
* floating-point processor.
*/
#include <kern/thread.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>
+#include <i386/thread.h>
extern int fp_kind;
extern void fpSSEexterrflt(void);
extern void fpflush(thread_t);
extern void fp_setvalid(boolean_t);
+#ifdef __i386__
extern void fxsave64(struct x86_fx_save *);
extern void fxrstor64(struct x86_fx_save *);
+#endif
/*
* FPU instructions.
#define fldcw(control) \
__asm__ volatile("fldcw %0" : : "m" (*(unsigned short *) &(control)) )
-extern unsigned short fnstsw(void);
-
-extern __inline__ unsigned short fnstsw(void)
+static inline unsigned short
+fnstsw(void)
{
unsigned short status;
__asm__ volatile("fnstsw %0" : "=ma" (status));
set_ts();
}
+
/*
* Save thread`s FPU context.
*/
clear_ts();
/* registers are in FPU - save to memory */
ifps->fp_valid = TRUE;
+
+#if defined(__i386__)
if (!thread_is_64bit(thread) || is_saved_state32(thread->machine.pcb->iss)) {
/* save the compatibility/legacy mode XMM+x87 state */
fxsave(&ifps->fx_save_state);
fxsave64(&ifps->fx_save_state);
ifps->fp_save_layout = FXSAVE64;
}
+#elif defined(__x86_64__)
+ /* for a 64-bit long mode kernel, we can always use plain fxsave */
+ fxsave(&ifps->fx_save_state);
+ ifps->fp_save_layout = thread_is_64bit(thread) ? FXSAVE64
+ : FXSAVE32;
+
+#endif
}
set_ts();
}