89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
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/*-
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* Copyright (c) 2002 by Thomas Moestl <tmm@FreeBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LIBC_SPARC64_FPU_FPU_REG_H_
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#define _LIBC_SPARC64_FPU_FPU_REG_H_
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/*
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* These are not really of type char[]. They are are arrays of functions defined
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* in fpu_reg.S; each array member loads/stores a certain fpu register of the
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* given size.
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*/
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extern char __fpu_ld32[];
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extern char __fpu_st32[];
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extern char __fpu_ld64[];
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extern char __fpu_st64[];
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/* Size of the functions in the arrays. */
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#define FPU_LD32_SZ 8
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#define FPU_ST32_SZ 8
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#define FPU_LD64_SZ 8
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#define FPU_ST64_SZ 8
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/* Typedefs for convenient casts in the functions below. */
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typedef void (fp_ldst32_fn)(u_int32_t *);
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typedef void (fp_ldst64_fn)(u_int64_t *);
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/*
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* These are the functions that are actually used in the fpu emulation code to
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* access the fp registers. They are usually not used more than once, so
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* cacheing needs not be done here.
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*/
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static __inline u_int32_t
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__fpu_getreg(int r)
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{
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u_int32_t rv;
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((fp_ldst32_fn *)&__fpu_st32[r * FPU_ST32_SZ])(&rv);
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return (rv);
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}
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static __inline u_int64_t
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__fpu_getreg64(int r)
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{
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u_int64_t rv;
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((fp_ldst64_fn *)&__fpu_st64[(r >> 1) * FPU_ST64_SZ])(&rv);
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return (rv);
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}
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static __inline void
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__fpu_setreg(int r, u_int32_t v)
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{
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((fp_ldst32_fn *)&__fpu_ld32[r * FPU_LD32_SZ])(&v);
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}
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static __inline void
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__fpu_setreg64(int r, u_int64_t v)
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{
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((fp_ldst64_fn *)&__fpu_ld64[(r >> 1) * FPU_LD64_SZ])(&v);
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}
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#endif /* _LIBC_SPARC64_FPU_FPU_REG_H_ */
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