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/*
* 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_GLOBALS_H
#define _SYS_FPU_GLOBALS_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Sparc floating-point simulator PRIVATE include file.
*/
#include <sys/types.h>
#include <vm/seg.h>
#ifdef __cplusplus
extern "C" {
#endif
/* PRIVATE CONSTANTS */
#define INTEGER_BIAS 31
#define LONGLONG_BIAS 63
#define SINGLE_BIAS 127
#define DOUBLE_BIAS 1023
#define EXTENDED_BIAS 16383
/* PRIVATE TYPES */
#define DOUBLE_E(n) (n & 0xfffe) /* More significant word of double. */
#define DOUBLE_F(n) (1+DOUBLE_E(n)) /* Less significant word of double. */
#define EXTENDED_E(n) (n & 0xfffc) /* Sign/exponent/significand of extended. */
#define EXTENDED_F(n) (1+EXTENDED_E(n)) /* 2nd word of extended significand. */
#define EXTENDED_G(n) (2+EXTENDED_E(n)) /* 3rd word of extended significand. */
#define EXTENDED_H(n) (3+EXTENDED_E(n)) /* 4th word of extended significand. */
#define DOUBLE(n) ((n & 0xfffe) >> 1) /* Shift n to access double regs. */
#define QUAD_E(n) ((n & 0xfffc) >> 1) /* More significant half of quad. */
#define QUAD_F(n) (1+QUAD_E(n)) /* Less significant half of quad. */
#if defined(_KERNEL)
typedef struct {
int sign;
enum fp_class_type fpclass;
int exponent; /* Unbiased exponent */
uint_t significand[4]; /* Four significand word . */
int rounded; /* rounded bit */
int sticky; /* stick bit */
} unpacked;
/*
* PRIVATE FUNCTIONS
* pfreg routines use "physical" FPU registers, in fpusystm.h.
* vfreg routines use "virtual" FPU registers at *_fp_current_pfregs.
*/
extern void _fp_read_vfreg(FPU_REGS_TYPE *, uint_t, fp_simd_type *);
extern void _fp_write_vfreg(FPU_REGS_TYPE *, uint_t, fp_simd_type *);
extern void _fp_read_vdreg(FPU_DREGS_TYPE *, uint_t, fp_simd_type *);
extern void _fp_write_vdreg(FPU_DREGS_TYPE *, uint_t, fp_simd_type *);
extern enum ftt_type _fp_iu_simulator(fp_simd_type *, fp_inst_type,
struct regs *, void *, kfpu_t *);
extern void _fp_unpack(fp_simd_type *, unpacked *, uint_t, enum fp_op_type);
extern void _fp_pack(fp_simd_type *, unpacked *, uint_t, enum fp_op_type);
extern void _fp_unpack_word(fp_simd_type *, uint32_t *, uint_t);
extern void _fp_pack_word(fp_simd_type *, uint32_t *, uint_t);
extern void _fp_unpack_extword(fp_simd_type *, uint64_t *, uint_t);
extern void _fp_pack_extword(fp_simd_type *, uint64_t *, uint_t);
extern enum ftt_type fmovcc(fp_simd_type *, fp_inst_type, fsr_type *);
extern enum ftt_type fmovr(fp_simd_type *, fp_inst_type);
extern enum ftt_type movcc(fp_simd_type *, fp_inst_type, struct regs *,
void *, kfpu_t *);
extern enum ftt_type fldst(fp_simd_type *, fp_inst_type, struct regs *,
void *);
extern void fpu_normalize(unpacked *);
extern void fpu_rightshift(unpacked *, int);
extern void fpu_set_exception(fp_simd_type *, enum fp_exception_type);
extern void fpu_error_nan(fp_simd_type *, unpacked *);
extern void unpacksingle(fp_simd_type *, unpacked *, single_type);
extern void unpackdouble(fp_simd_type *, unpacked *, double_type, uint_t);
extern uint_t fpu_add3wc(uint_t *, uint_t, uint_t, uint_t);
extern uint_t fpu_sub3wc(uint_t *, uint_t, uint_t, uint_t);
extern uint_t fpu_neg2wc(uint_t *, uint_t, uint_t);
extern int fpu_cmpli(uint_t *, uint_t *, int);
/* extern void _fp_product(uint_t, uint_t, uint_t *); */
extern enum fcc_type _fp_compare(fp_simd_type *, unpacked *, unpacked *, int);
extern void _fp_add(fp_simd_type *, unpacked *, unpacked *, unpacked *);
extern void _fp_sub(fp_simd_type *, unpacked *, unpacked *, unpacked *);
extern void _fp_mul(fp_simd_type *, unpacked *, unpacked *, unpacked *);
extern void _fp_div(fp_simd_type *, unpacked *, unpacked *, unpacked *);
extern void _fp_sqrt(fp_simd_type *, unpacked *, unpacked *);
extern enum ftt_type _fp_write_word(uint32_t *, uint32_t, fp_simd_type *);
extern enum ftt_type _fp_read_word(const uint32_t *, uint32_t *,
fp_simd_type *);
extern enum ftt_type _fp_read_inst(const uint32_t *, uint32_t *,
fp_simd_type *);
extern enum ftt_type _fp_write_extword(uint64_t *, uint64_t, fp_simd_type *);
extern enum ftt_type _fp_read_extword(const uint64_t *, uint64_t *,
fp_simd_type *);
extern enum ftt_type read_iureg(fp_simd_type *, uint_t, struct regs *,
void *, uint64_t *);
extern enum ftt_type write_iureg(fp_simd_type *, uint_t, struct regs *,
void *, uint64_t *);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_FPU_GLOBALS_H */
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