xref: /illumos-gate/usr/src/uts/sparc/sys/fpu/fpusystm.h (revision 7c478bd95313f5f23a4c958a745db2134aa0324)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_FPU_FPUSYSTM_H
#define	_SYS_FPU_FPUSYSTM_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"

/*
 * ISA-dependent FPU interfaces
 */

#ifdef __cplusplus
extern "C" {
#endif

#ifdef _KERNEL

struct fpu;
struct regs;

#if !defined(DEBUG) && !defined(NEED_FPU_EXISTS)
#define	fpu_exists 1
#else
extern int fpu_exists;
#endif

extern int fpu_version;
extern int fpdispr;

extern void fpu_probe(void);
extern void fp_disable(void);
extern void fp_disabled(struct regs *);
extern void fp_clearregs(kfpu_t *);
extern void fp_enable(void);
extern void fp_fksave(kfpu_t *);
extern void fp_runq(struct regs *);
extern void fp_load(kfpu_t *);
extern void fp_save(kfpu_t *);
extern void fp_restore(kfpu_t *);
extern void run_fpq(klwp_t *, fpregset_t *);
extern void syncfpu(void);
extern void _fp_read_pfsr(uint64_t *fsr);
extern void _fp_write_pfsr(uint64_t *);
extern void _fp_read_pfreg(uint32_t *, uint_t);
extern void _fp_write_pfreg(uint32_t *, uint_t);
extern void fp_free(kfpu_t *, int);
extern void fp_fork(klwp_t *, klwp_t *);
extern void fp_v8_load(kfpu_t *);
extern void fp_v8p_load(kfpu_t *);
extern void fp_v8_fksave(kfpu_t *);
extern void fp_v8p_fksave(kfpu_t *);
extern uint32_t _fp_read_fprs(void);
extern void _fp_write_fprs(uint32_t);
extern void save_gsr(kfpu_t *);
extern void restore_gsr(kfpu_t *);
extern uint64_t get_gsr(kfpu_t *);
extern void set_gsr(uint64_t, kfpu_t *);
extern uint64_t get_phys_gsr(kfpu_t *);
extern void set_phys_gsr(uint64_t, kfpu_t *);
extern uint_t get_pstate();
extern uint_t get_ccr();
extern void set_ccr(uint_t);
extern void _fp_read_pdreg(uint64_t *, uint_t);
extern void _fp_write_pdreg(uint64_t *, uint_t);

#endif	/* _KERNEL */

#ifdef __cplusplus
}
#endif

#endif	/* _SYS_FPU_FPUSYSTM_H */