/*
* Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @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. 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
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
/*
* Mach Operating System
* Copyright (c) 1991 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* 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/kern_types.h>
#include <mach/i386/kern_return.h>
#include <mach/i386/thread_status.h>
#include <i386/proc_reg.h>
#define FP_XMASK ((uint32_t) (XFEM_X87 | XFEM_SSE))
#define AVX_XMASK ((uint32_t) (XFEM_X87 | XFEM_SSE | XFEM_YMM))
#define AVX512_XMASK ((uint32_t) (XFEM_X87 | XFEM_SSE | XFEM_YMM | XFEM_ZMM_OPMASK))
typedef enum {
FXSAVE32 = 1,
FXSAVE64 = 2,
XSAVE32 = 3,
XSAVE64 = 4,
FP_UNUSED = 5
} fp_save_layout_t;
#define STATE64_FULL 0x10
typedef enum {
UNDEFINED,
FP,
AVX,
AVX512,
/*
* The following states are never associated with a thread or task.
* They are used for array declarations of data used during signal dispatch,
* but these values are never assigned to threads' (or tasks') xstate members.
*/
UNDEFINED_FULL = UNDEFINED | STATE64_FULL,
FP_FULL = FP | STATE64_FULL,
AVX_FULL = AVX | STATE64_FULL,
AVX512_FULL = AVX512 | STATE64_FULL,
} xstate_t;
static inline uint64_t
xgetbv(uint32_t c)
{
uint32_t mask_hi, mask_lo;
__asm__ __volatile__ ("xgetbv" : "=a"(mask_lo), "=d"(mask_hi) : "c" (c));
return ((uint64_t) mask_hi << 32) + (uint64_t) mask_lo;
}
static inline void
xsetbv(uint32_t mask_hi, uint32_t mask_lo)
{
__asm__ __volatile__ ("xsetbv" :: "a"(mask_lo), "d"(mask_hi), "c" (XCR0));
}
extern void init_fpu(void);
extern void fpu_module_init(void);
extern void fpu_free(
thread_t thr_act,
void *fps);
extern kern_return_t fpu_set_fxstate(
thread_t thr_act,
thread_state_t state,
thread_flavor_t f);
extern kern_return_t fpu_get_fxstate(
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 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 fpu_capability;
extern xstate_t current_xstate(void);
extern int fpUDflt(user_addr_t rip);
#ifdef MACH_KERNEL_PRIVATE
#if DEBUG || DEVELOPMENT
extern uint32_t thread_fpsimd_hash(thread_t);
extern bool thread_fpsimd_hash_enabled(void);
#endif
extern void vzeroall(void);
extern void xmmzeroall(void);
extern void avx512_zero(void);
#endif /* MKP */
#endif /* _I386_FPU_H_ */