X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/55e303ae13a4cf49d70f2294092726f2fffb9ef2..6d2010ae8f7a6078e10b361c6962983bab233e0f:/osfmk/i386/fpu.h diff --git a/osfmk/i386/fpu.h b/osfmk/i386/fpu.h index ba8762902..5b0658f60 100644 --- a/osfmk/i386/fpu.h +++ b/osfmk/i386/fpu.h @@ -1,16 +1,19 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2010 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * Copyright (c) 1999-2003 Apple Computer, 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. 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 @@ -20,7 +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@ @@ -51,9 +54,6 @@ * the rights to redistribute these changes. */ -/* - */ - #ifndef _I386_FPU_H_ #define _I386_FPU_H_ @@ -61,112 +61,50 @@ * Macro definitions for routines to manipulate the * floating-point processor. */ - -#include -#include -#include +#include #include #include #include +#include +#include -/* - * 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 - */ -#if NCPUS > 1 -#define fpu_save_context(thread) \ - { \ - register struct i386_fpsave_state *ifps; \ - ifps = (thread)->top_act->mact.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(); \ - } - -#else /* NCPUS == 1 */ -#define fpu_save_context(thread) \ - { \ - set_ts(); \ - } - -#endif /* NCPUS == 1 */ - +typedef enum { + FXSAVE32 = 1, + FXSAVE64 = 2, + XSAVE32 = 3, + XSAVE64 = 4, + FP_UNUSED = 5 + } fp_save_layout_t; -extern int fp_kind; +extern int fp_kind; extern void init_fpu(void); extern void fpu_module_init(void); -extern void fp_free( - struct i386_fpsave_state * fps); -extern kern_return_t fpu_set_state( - thread_act_t thr_act, - struct i386_float_state * st); -extern kern_return_t fpu_get_state( - thread_act_t thr_act, - struct i386_float_state * st); -/* extern kern_return_t fpu_set_fxstate( - thread_act_t thr_act, - struct i386_float_state * st); +extern void fpu_free( + 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_act_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 fpflush(thread_act_t); +extern void fpSSEexterrflt(void); +extern void fpflush(thread_t); +extern void fp_setvalid(boolean_t); +#ifdef __i386__ +extern void fxsave64(struct x86_fx_thread_state *); +extern void fxrstor64(struct x86_fx_thread_state *); +#endif + +extern void clear_fpu(void); +extern void fpu_save_context(thread_t thread); #endif /* _I386_FPU_H_ */