/* * 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)) 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 extern uint32_t thread_fpsimd_hash(thread_t); extern void vzeroall(void); extern void xmmzeroall(void); extern void avx512_zero(void); #endif /* MKP */ #endif /* _I386_FPU_H_ */