/*
- * 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,
- * 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_
* Macro definitions for routines to manipulate the
* 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>
-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 x86_fpsave_state * fps);
+ thread_t thr_act,
+ void *fps);
extern kern_return_t fpu_set_fxstate(
thread_t thr_act,
- thread_state_t state);
+ thread_state_t state,
+ thread_flavor_t f);
extern kern_return_t fpu_get_fxstate(
thread_t thr_act,
- thread_state_t state);
+ thread_state_t state,
+ thread_flavor_t f);
extern void fpu_dup_fxstate(
thread_t parent,
thread_t child);
extern void fpSSEexterrflt(void);
extern void fpflush(thread_t);
extern void fp_setvalid(boolean_t);
-extern void fxsave64(struct x86_fx_save *);
-extern void fxrstor64(struct x86_fx_save *);
-
-/*
- * 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)
-
-
-static inline void clear_fpu(void)
-{
- set_ts();
-}
-
-/*
- * Save thread`s FPU context.
- */
-
-static inline void fpu_save_context(thread_t thread)
-{
- struct x86_fpsave_state *ifps;
- assert(ml_get_interrupts_enabled() == FALSE);
- ifps = (thread)->machine.pcb->ifps;
- if (ifps != 0 && !ifps->fp_valid) {
- /* Clear CR0.TS in preparation for the FP context save. In
- * theory, this shouldn't be necessary since a live FPU should
- * indicate that TS is clear. However, various routines
- * (such as sendsig & sigreturn) manipulate TS directly.
- */
- clear_ts();
- /* registers are in FPU - save to memory */
- ifps->fp_valid = TRUE;
- 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);
- ifps->fp_save_layout = FXSAVE32;
- }
- else {
- /* Execute a brief jump to 64-bit mode to save the 64
- * bit state
- */
- fxsave64(&ifps->fx_save_state);
- ifps->fp_save_layout = FXSAVE64;
- }
- }
- set_ts();
-}
+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_ */
projects / apple / xnu.git / blobdiff